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Fibromyalgia (FMS) and
Chronic Myofascial Pain (CMP)
For Doctors and 
Other Health Care Providers

annotated by Devin J. Starlanyl

 

 

References for Research Purposes

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NOTE:  New Nomenclature

All material written by me after October 1, 2007, will have the following changes in nomenclature.  I regret any confusion caused by this change, but deem it necessary due to the changes in our current understanding of the conditions involved.

 
The abbreviation for myofascial trigger point, "TrP," is replaced by "MTP." 
 
The term Myofascial Pain Syndrome (MPS) will no longer be used, as current research shows it is not a syndrome but a true myopathy, and thus a true disease.  
 
There are acute MTPs and chronic myofascial pain (CMP) due to MTPs.  Where applicable, CMP will be separated into CMP Stage 1 (without central sensitization) and CMP Stage 2 (with central sensitization).
 
Fibromyalgia (FM) will replace the former term fibromyalgia syndrome (FMS).

 

LaCroix-Fralish ML, Tawfik VL, DeLeo JA. 2005.  The organizational and activational effects of sex hormones on tactile and thermal hypersensitivity following lumbar nerve root injury in male an female rates.  Pain 114(1-2):71-80.  “Manipulation of gonadal hormones may be a potential source for novel therapies for chronic pain in women.”

Lafargue, A. L., L. B. Cabrales, R. M. Larramendi. 2002. Bioelectrical parameters of the whole human body obtained through bioelectrical impedance analysis. 2002. 23(6):450-454.

Lahita, R. G.  1998. Collagen disease: the enemy within.  Int J Fertil Womens Med 43(5):229-34.

Lai, H. and M. Carino.  1999.  60 Hz magnetic fields and central cholinergic activity: effects of exposure intensity and duration.  Bioelectromagnetics 20(5):284-9.

Lake, D. A.  1992.  Neuromuscular electrical stimulation.  An overview and its application in the treatment of sports injuries.  Sports Med 13(5):320-336.

Lakomek HJ, Lakomek M, Bosquet-Nahrwold K. 2007.  [Fibromyalgia. Diagnostics – disease approach – therapy]  Med Klin (Munich) 102(1):23-29. [German]  “The importance of fibromyalgia has been recognized within the German health system by creating the new ICD code M79.70 and by assigning fibromyalgia its own rheumatologic DRG (I79Z).

Lan C., S. Y. Chen, J. S. Lai et al. 2001. Heart rate responses and oxygen consumption during Tai Chi Chuan practice. Am J Chin Med 29(3-4):403-10. T'ai chi chuan is a moderate intensity aerobic exercise.   

Landis CA, Lentz MJ, Rothermel J et al.  2004.  Decreased sleep spindles and spindle activity in midlife women with fibromyalgia and pain.  Sleep 27(4):741-750.  There may be impaired thalamocortical spindle generation mechanisms associated with FMS in women.

Lane, J. D. , B. G. Phillips-Bute and C. F. Piper.  1998. Caffeine raises blood pressure at work. 1998.  Psychosom Med  60(3):327-330. 

Landolt, H.P., C. Roth, D. J. Dijk and A. A. Borbely.  1996.  Late-afternoon ethanol intake affects nocturnal sleep and the sleep EEG in middle-aged men.  J Clin Psychopharmacol 16(6):428-36.

Landolt, H. P. , E. Werth, A. A. Borbely and D,. J. Dijk 1995. Caffeine intake (200 mg) in the morning affects human sleep and EEG power spectra at night. Brain Res 675(1-2):67-74.  

Landro, N. I., T. C. Stiles and H. Sletvold. Memory functioning in patients with primary fibromyalgia and depression on healthy controls. 1997. J Psychosomatic Research. 42(3):297-306.

Lang, AM. 2003.  A preliminary comparison of the efficacy and tolerability of botulinum toxin serotypes A and B in the treatment of myofascial pain syndrome: a retrospective, open-label chart review.  Clin Ther 25(8):2268-78.  Myofascial pain patients treated with BTX-A “...reported significantly greater reductions in pain for longer durations...” than BTX-B, and there were no “severe systemic adverse effects,” which was not the case with BTX-B.

Lang, A. M. 2002. Botulinum toxin therapy for myofascial pain disorders. Curr Pain Headache Rep 6(5):355-60.

Langevin HM. 2006.  Connective tissue: a body-wide signaling network?  Med Hypotheses. 66(6):1074-1077.  “Unspecialized ‘loose’ connective tissue forms an anatomical network throughout the body.  This paper presents the hypothesis that, in addition, connective tissue functions as a body-wide mechanosensitive signaling network.”   “Demonstrating the existence of a connective signaling network therefore may profoundly influence our understanding of health and disease.”  [This concept is increasingly important due to the finding of trigger points in so many types of tissue, and that at least MTPs have part in central sensitization.  DJS]

Langevin HM, Sherman KJ. 2007.  Pathophysiological model for chronic low back pain integrating connective tissue and nervous system mechanisms.  Med Hypotheses. 68(1):74-80.  [Most chronic low back pain includes MTPs, and the MTPs can cause central sensitization.  Since pain at the end of range of motion is due to MTPs and the MTPs can cause central sensitization contributing to chronic pain (see Niddam et al 2008), the myofascial component must be diagnosed and treated for the therapies mentioned in this article to be successful.  DJS.]

Langford CF, Udvari Nagy S, Ghoniem GM. 2007.  Levator ani trigger point injections: an underutilized treatment for chronic pelvic pain.  Neurourol Urodyn 26(1):59-62.  “In the management of CPP, a non-surgical office-based therapy such as trigger point injections can be effective in selected patients.”

Langley, P.  1997.  Scapular instability associated with brachial plexus irritation: a proposed causative relationship with treatment implications.  J Hand Ther 10(1):35-40.  

Lantz, M. S., E. Buchalter and V. Giambanco.  1999.  St. John’s wort and antidepressant drug interactions in the elderly.  J Geriatr Psychiatry Neurol 12(1):   

Lanza. F. L., J. R. Codispoti and E. B. Nelson.  1998.  An endoscopic comparison of gastro-duodenal injury with over-the-counter doses of ketoprofen and acetaminophen.  Am J Gastro-enterol 93(7):1051-4.

Lapatki BG, Oostenveld R, Van Dijk JP et al. 2006.  Topographical characteristics of motor units of the lower facial musculature revealed by means of high-density surface EMG.  J Neurophysiol. 95(1):342-354.

Lapin, I. P., S. M. Mirzaev, I. V. Ryzov and G. F. Oxenkrug.  1998.  Anticonvulsant activity of melatonin against seizures induced by quinolinate, kainate, glutamate, NMDA, and pentylenetetrazole in mice.  J Pineal Res 24(4):215-218.

Lark SD, McCarthy PW. 2007.  Cervical range of motion and proprioception in rugby players versus non-rugby players.  J Sports Sci. 25(8):887-894.  “The active cervical range of motion of rugby forwards is similar to that of whiplash patients, suggesting that participation in rugby can have an effect on neck range of motion that is equivalent to chronic disability.  Reduced active cervical range of motion could also increase the likelihood of injury and exacerbate age-related neck problems.”  [This study may have significant relevance to many sports. DJS]

Larsen, L. B. and R. Holm.  2000. [Prolonged neck pain following automobile accidents.  Gender and age related risk calculated on basis of data from an emergency department].  Ugeskr Laeger 162(2):178-81 [Danish].  

Larson, B., Bjork, J., Henriksson, K.J., Gerdle, B., Lindman, R. 2000. The prevalence of cytochrome oxidase negative and super-positive fibers and ragged red fibers in the trapezius muscle of female cleaners with and without myalgia and/or female healthy controls. Peripheral pain input from injuries, inflammation, or chronic work-related myalgia are probable sources of persistent nociceptive impulses could lead to a central sensitization.  Furthermore, once central sensitization develops, peripheral pain generators, such as myofascial trigger points, may lead to perpetuation and aggravation of central sensitization.

 

Laske C, Stransky E, Eschweiler GW et al. 2006.  Increased BDNF serum concentration in fibromyalgia with or without depression or antidepressants.  J Psychiatr Res.  [Apr 3 Epub ahead of print]   “Fibromyalgia (FM) is still often viewed as a psychosomatic disorder.  However, the increased pain sensitivity to stimuli in FM patients is not an ‘imagined’ histrionic phenomena.  Pain, which is consistently felt in the musculature, is related to specific abnormalities in the CNS pain matrix.  Brain-derived neurotrophic factor (BDNF) is an endogenous protein involved in neuronal survival and synaptic plasticity of the central and peripheral nervous system (CNS and PNS).  Several lines of evidence converged to indicate that BDNF also participates in structural and functional plasticity of nociceptive pathways in the CNS and within the dorsal root ganglia and spinal cord.  In the latter, release of BDNF appears to modulate or even mediate nociceptive sensory inputs and pain hypersensitivity.  We were interested if BDNF serum concentration may be altered in FM.”  “The results from our study indicate that BDNF may be involved in the pathophysiology of pain in FM.  Nevertheless, how BDNF increases susceptibility to pain is still not known.”

Laurent, D. D., and H. R.  Holman. 1999.   Evidence suggesting that a chronic disease self-management program can improve health status while reducing hospitalization: a randomized trial.  Med Care 37(1):5-14.

Lautenbacher S, Kunz M, Strata P et al. 2005.  Age effects on pain thresholds, temporal summation and spatial summation of heat and pressure pain.  “...somatosensory thresholds for non-noxious stimuli increase with age whereas pressure pain thresholds decrease and heat pain thresholds show no age-related changes.”

 

Lautenbacher S, Rollman GB, McCain GA. 1994.  Multi-method assessment of experimental and clinical pain in patients with fibromyalgia.  Pain 59(1):45-53.  There is increased pain responsiveness for any noxious stimuli in FM patients, including cold, heat, and electronic stimulation, although the latter was noted in the tender point regions.

 

Lavand’homme P, De Kock M. 2006.  The use of intraoperative epidural or spinal analgesia modulates postoperative hyperalgesia and reduces residual pain after major abdominal surgery.  Acta Anaesthesiol Belg. 57(4):373-379.  Blocking nociceptive stimuli with multimodal analgesia on the surgical incision site may prevent or at least minimize central sensitization after abdominal procedures. 

Lavand’homme P. 2006.  Perioperative pain.  Curr Opin Anaesthesiol. 19(5):556-561.  “Effective perioperative block of nociceptive inputs from the wound as well as use of antihyperalgesic and analgesic drugs in combination seem the best way to control postoperative pain and specifically to prevent central sensitization.”

Lavaque E, Sierra A, Azcoitia I et al. 2005.  Steroidogenic acute regulatory protein in the brain. Neuroscience [Dec. 6 Epub ahead of print]  “The nervous system synthesizes steroids that regulate the development and function of neurons and glia, and have neuroprotective properties.  The first step in steroidogenesis involves the delivery of free cholesterol to the inner mitochondrial membrane where it can be converted into pregnenolone by the enzyme cytochrome P450side chain cleavage.  The peripheral-type benzodiazepine receptor and the steroidogenic acute regulatory protein are involved in this process and appear to function in a coordinated manner.”  “Steroidogenic acute regulatory protein is regulated in the nervous system by different physiological and pathological conditions and may play an important role during brain development, aging and after injury.”

Lavelle ED, Lavelle W, Smith HS. 2007.  Myofascial trigger points.  Anesthesiol Clin. 25(4):841-851.

Lavin, R. A., M. Pappagallo and K. V. Kuhlemeier. 1997.  Cervical pain: a comparison of three pillows.  Arch Phys Med Rehabil 78(2):193-8.

Lawrence RC, Felson DT, Helmick CG et al. 2007.  Estimates of the prevalence of arthritis and other rheumatic conditions in the United States: Part II.  Arthritis Rheum. 58(1):26-35.  “Estimates for many specific rheumatic conditions rely on a few, small studies of uncertain generalizability to the US population.  This report provides the best available prevalence estimates for the US, but for most specific conditions more studies generalizable to the US or addressing understudied populations are needed.”  [This study estimated that among US adults, 5 million have FM.  They also mentioned 59 million with low back pain and 30.1 million with neck pain, but did not specify MTPs.  Since most of the conditions they counted often do have a myofascial component, the numbers of people with MTPs is staggering.  So is the fact that they ignored this in this NIH study. DJS]

Lawrence, W. F., S. S. Smith, T. B. Baker and M. C. Fiore.  1998.  Does over-the-counter nicotine replacement therapy improve smokers’ life expectancy?  Tob Control 7(4):364-8.

Leach, M. W., D. W. Frank, M. R. Berardi, E. W. Evans, R. C. Johnson, D. G. Schuessler and E. Radwanski.  1999.  Renal changes associated with naproxen sodium administration in cynomolgus monkey.  Toxicol Pathol 27(3):295-306.  

Leal-Cerro, A., J. Povedano, R. Astorga, M. Gonzalez, H. Silva, F. Garcia-Pesquera, F. F. Casanueva and C. Dieguez.  1999. The growth hormone (GH)-releasing hormone-GH-insulin-like growth factor-1 axis in patients with fibromyalgia syndrome.  J Clin Endocrinol Metab 84(9):3378-81.

Lean ME. 2000. Obesity: burdens of illness and strategies for prevention or management.  Drugs Today (Barc) 36(11):773-784.  Obesity is implicated as a perpetuating factor in low back pain, hypertension, metabolic syndrome, fatigue, dyspnea, and obstructive sleep apnea.

Leavitt F, Katz RS, Mills M et al. 2002.  Cognitive and dissociative manifestations in fibromyalgia.  J Clin Rheumatol. 8(2):77-84.  “These findings suggest that dissociation may play a role in FM symptom amplification and may aid in comprehending the regularity of cognitive symptoms.  Separating cases of fibrofog from cognitive conditions with actual brain damage is important.  It may be prudent to add a test of dissociation as an adjunct to the evaluation of FM patients in cases of suspected fibrofog.  Otherwise, test results may prove normal even in patients with disabling cognitive symptoms.”

Leavitt F, Katz RS. 2006.  Distraction as a key determinant of impaired memory in patients with fibromyalgia.  J Rheumatol. 33(1):127-132.  “The findings validate the perception of failing memory in patients with FM and are the first psychometric based evidence to our knowledge of short-term memory problems in FM linked to interference from a source of distraction.  Adding a source of distraction caused the majority of FM patients to retain new information poorly and may be integral to an understanding of FM memory problems.”

Lebiebici B, Pektas ZO, Ortancil O et al. 2006.  Coexistence of fibromyalgia, temporomandibular disorder, and masticatory myofascial pain syndromes.  [Nov 10 Epub ahead of print]  Rheumatol Int  “Our results indicate that coexistence of FM and TMD with MMP is high.  Pain and tenderness in the masticatory muscles appear to be an important element in FM, so in some patients it may be the leading complaint.”

Lebovits, A. H., I. Florence, R. Bathina, V. Hunko, M. T. Fox and C. Y. Bramble.  1997.  Pain knowledge and attitudes of healthcare providers: practice characteristic differences.  Clin J Pain 13(3):237-243.  

Lee, J. R.  1991.  Is natural progesterone the missing link in osteoporosis prevention and treatment?  Med Hypotheses 35(4):316-8.

Lee KJ, Kim JH, Cho SW. 2005.  Gabapentin reduces rectal mechanosensitivity and increases rectal compliance in patients with diarrhea-predominant irritable bowel syndrome.  Aliment Pharmacol Ther. 22(10):981-988.  “Our results show that gabapetin reduces rectal sensory thresholds through attenuating rectal sensitivity to distension and enhancing rectal compliance in diarrhea-predominant irritable bowel syndrome patients.”   [This meshes with findings of central sensitization in IBS patients. DJS] 

Lee SS, Yoon HJ, Chang HK et al. 2005.  Fibromyalgia in Behcet’s disease is associated with anxiety and depression, and not with disease activity.  Clin Exp Rheumatol. 23(4 Suppl 38):S15-19.  “FM (fibromyalgia) was very common among BD (Behcet’s Disease) patients and was associated with the presence of anxiety and depression, and not with disease activity.”  [Multiple invisible illnesses (especially if one or more is undiscovered and untreated for a number of years and causes a chronic pain state) have a greater chance to cause depression, and this must be taken into account. DJS] 

Leeb BF, Andel I, Sautner J et al.  2004.  The DAS28 in rheumatoid arthritis and fibromyalgia patients.  [Epub]  “Conclusion: The DAS28, as expected, proved to be inappropriate to express disease activity in FM patients.  DAS28 values for expressing disease activity in RA patients may be flawed by coexisting FM and should therefore be regarded with caution as high pain levels more than impaired mood may lead to higher total scores.”

Lefebvre, P. J. and A. J. Scheen. 1999. Glucose metabolism and the postprandial state. Eur J Clin Invest 29(S2):1-6.

Leitgeb N, Schrottner J. 2003.  Electrosensitibity and electromagnetic hypersensitivity.  Bioelectromagnetics 24(6):387-394.  Both electromagnetic hypersensitivity (developing health symptoms due to exposure of environmental electromagnetic fields) and electromagnetic sensibility (the ability to perceive electric and electromagnetic exposure) have been scientifically documented.  People with electromagnetic sensibility do not necessarily have electromagnetic hypersensitivity. 

Lempiainen, P., L. Mykkanen, K. Pyorala, M. Laakso and J. Kuusisto.  1999.  Insulin resistance syndrome predicts coronary heart disease events in elderly non-diabetic men. Circulation 100(2):123-128.  

Lentz, M. J. , C. a. Landis, J. Rothermel and J. L. Shaver. 1999. Effects of selective slow wave sleep disruption on musculoskeletal pain and fatigue in middle aged women. J Rheumatol 26(7):1586-92 

Leon, J., F. Vives, E. Crespo, E. Camacho, A. Espinosa, M. A. Gallo, G. Escames and D. Acuna-Castroviejo.  1998.  Modification of nitric oxide synthase activity and neuronal response in rat striatum by melatonin and kynurenine derivatives.  J Neuroendocrinol 10(4):297-302. 

Leung AK, Lemay JF. 2004.  The limping child.  J Pediatr Health Care 18(5):219-223.  This paper on the causes of limping in children stresses trauma as the most important cause, but that “...awareness of other potential causes is important.”  Yet it neglects one of the most common and easily treated; the myofascial TrP.

Levine JD, Reichling DB. 2005.  Fibromyalgia: the nerve of that disease.  J Rheumatol Suppl. 75:29-37.  This paper categorizes FMS as “...a common, often debilitating and intractable, chronic, generalized pain condition.”  The authors suggest that there is altered activity in the subdiaphramatic vagus nerve that may be an integral part of this condition.  [This would mesh well with the findings of Linda Watkins and her research team regarding the development of central sensitization. DJS]

Lewin, D. S. and R. E. Dahl.  1999.  Importance of sleep in the management of pediatric pain. J Dev Behav Pediatr 20(4):244-52.

Lewis, K. S.  1998.  Emotional adjustment to a chronic illness.  Lippincotts Prim Care Pract 2(1):38-51.  

Lewis, P. J. 1996. A review of prayer within the role of the holistic nurse.  J Holist Nurs 14(4):308-315..

Lewit K, Olsanska S. 2004.  Clinical importance of active scars: abnormal scars as a cause of myofascial pain.  J Manipulative Physiol Ther. 27(6):399-402.  “The treatment of active scars can be of importance in a great number of cases; untreated, active scars are an important cause of therapeutic failure.  Treatment also widens the scope of manipulative therapy."

Lewit, K. and D. G. Simons.  1984.  Myofascial pain: relief by post-isometric relaxation. Arch Phys Med Rehabil 65(8):452-6. 

Li, C. M., H. Chiang, Y. D. Fu, B. J. Shao, J. R. Shi and G. D. Yao.  1999. Effects of 50 Hz magnetic fields on gap junctional intercellular communication.  Bioelectromagnetics 20(5):290-4. 

Li, J., D. A. Simone and A. A. Larson.  1999.  Windup leads to characteristics of central sensitization.  Pain 79(1):75-82.

Li, S. L., H. Goko, Z. D. Xu, G. Kimura, Y. Sun, M. H. Kawachi, T. G. Wilson, S. Wilczynski and Y. Fujita-Yamaguchi.  1998.  Expression of insulin-like growth factor (IGF)-II in human prostate, breast, bladder, and paraganglioma tumors.  Cell Tissue Res 291(3):469-479.

Li W.W., Le Goascogne C., Ramauge M.  Deiodinases of thyroid hormones: induction in the sciatic nerve after injury.  Glia (Suppl 1):S89 [Abstract].

Liao, S. J. and M. K. Liao.  1985.  Acupuncture and tele-electronic infra-red thermography. Acupunct Electrother Res 10(1-2):41-66.

Liboff A.R., Cherng S., Jenrow K.A. et al. 2003. Calmodulin-dependent cyclic nucleotide phosphodiesterase activity is altered by a 20 &mgr; T magnetostatic fields. Bioelectromagnetics 24(1):32-38.  “Calmodulin activation may be functionally sensitive to the geomagnetic field.”

Liedberg GM, Henriksson CM.2002.  Factors of importance for work disability in women with fibromyalgia: An interview study.  Arthritis Rheum 15:47(3):266-74. "The ability to remain at work depends not only on limitation in work capacity, but also on the capacity of society to adjust work environments and work tasks.  More individual solutions are needed to allow women with fibromyalgia to maintain work roles."

Liedtke, W. 2006. Transient receptor potential vanilloid channels functioning in transduction of osmotic stimuli.  J Endocrinol 191(3):515-523.  This study suggests that ion channels play a part in mechanosensation, including proprioception.  [Although this was done in invertebrates, it may have implications as myofascial pain is investigated as a possible channelopathy.  It may provide clues as to how proprioception is affected by myofascial TrPs. DJS]

Lightfoot, R.W. Jr, B. J. Luft, D. W. Rahn, A. C. Steere, L. H. Sigal, D. C. Zoschke, P. Gardner, M. C. Britton and R .L. Kaufman. 1993. Empiric parenteral antibiotic treatment of patients with fibromyalgia and fatigue and a positive serologic result for Lyme disease.  A cost-effectiveness analysis. Ann Intern Med 119(6):503-9.

Liljeberg, H. G., A. K. Akerberg and I. M. Bjorck.  1999.  Effect of the glycemic index and content of indigestible carbohydrates of cereal-based breakfast meals on glucose tolerance at lunch in healthy subjects.  Am J Clin Nutr 69(4):647-55. 

Lim EC, Seet RC. 2007. Can botulinum toxin put the restless legs syndrome to rest?  Med Hypotheses [Mar 13 Epub ahead of print].  “We postulate that BTX can be injected subcutaneously to the lower limbs to effect amelioration of the symptoms of RLS.”  [This would indicate that the RLS may be caused by MTrPs.  It would be of interest to see if other MTrP treatment would be effective. DJS]

Lin, T. Y. , M. J. Teixeira, A. A. Fischer, F. G. Barboza, S. T. Immura, R. Mattar Jr.1997. Work-related musculoskeletal disorders. Phys Med Rehab Clin N Am (Philadelphia): ****113-117.

Linaker, C. H., K. Walker-Bone, K. Palmer and C. Cooper.  1999. Frequency and impact of regional musculoskeletal disorders.  Baillieres Clin Rheumatol 13(2):197-215.

Lind BK, Lafferty WE, Tyree PT et al. 2007.  Use of complementary and alternative medicine providers by fibromyalgia patients under insurance coverage.  Arthritis Rheum. 57(1):71-76.  Even though there were an increased number of health care visits with more CAM use by the most ill patients, the use of CAM was not associated with higher overall cost.  “Until a cure for FMS is found, CAM (complementary and alternative medicines) providers may offer an economic alternative for patients with FMS seeking symptomatic relief.”  

Linder MW, Valdes R Jr. 2001.  Genetic mechanisms for variability in drug response and toxicity.  J Anal Toxicol. 25(5):405-413.  This article gives four examples of how genetic mechanisms can affect drug action and reaction.

Lindheim, S. R., R. S. Legro, R. S. Morris, I. L. Wong, D. Q. Tran, M. A. Vijod, F. Z. Stanczykand R. A. Lobo.  1994.  The effect of progestins on behavioral stress responses in postmenopausal women.  J Soc Gynecol Investig 1(1):79-83.

Lindheim, S. R. , D. M. Duffy, T. Kojima, M. A. Vijod, F. Z. Stanczyk and R. A. Lobo. 1994. The route of administration influences the effect of estrogen on insulin sensitivity in postmenopausal women. Fertil Steril 62(6):1176-80. 

Lindheim, S. R. , S. C. Presser, E. C. Ditkoff, M. A. Vijod, F. Z. Stanczyk and R. A. Lobo. 1993. A possible bimodal effect of estrogen on insulin sensitivity in post menopausal women and the attenuating effect of added progestin. Fertil Steril 60(4):664-7.

Ling, F.W. and J. C. Slocumb.  1993.  Use of trigger point injections in chronic pelvic pain. Obstet Gynecol Clin North Am 20(4):809-815.

Lindgren, M., B. Eckert, G. Stenberg and C.-D. Agardh.  1996.  Restitution of neurophysiological functions, performance, and subjective symptoms after moderate insulin-induced hypoglycemia in non-diabetic men.  Diabetic Medicine 13:218-225.  was fast.

Linton, S. J., A. L. Hellsing and D. Andersson.  1993.  A controlled study of the effects of an early intervention on acute musculoskeletal pain problems.  Pain 54(3):353-9.

Lipman, A. G.  1987.  Effects of smoking on drug therapy.  Modern Medicine 55:185-186.  The impact of smoking on drug absorption, metabolism, and action.

Liska D. J. 1998. The Detoxification Enzyme Systems. Alt Med Rev 3(3):187-198.

Lister, B. J. 1996. Dilemmas in the treatment of chronic pain. Am J Ned 101(1A):2S-5S.

Liu, H., P. W. Mantyh and A. I. Basbaum. 1997. NMDA-receptor regulation of substance P release from primary afferent nociceptors. Nature 386(6626):721-724.

Liu ZJ, Yamagata K, Kuroe K et al. 2000.  Morphological and positional assessment of TMJ components and lateral pterygoid muscle in relation to symptoms and occlusion of patients with temporomandibular disorders.  J Oral Rehabil 27(10):860-874.  “These findings suggest that TMJ internal derangements are more related to the positional changes or spatial relationships of TMJ components but less to the individual morphologies of TMJ osseous structures, disc and LP (lateral pterygoid), as well as specific clinical symptoms and occlusal factors...” 

Ljoranson, D., Ryan, K.M., Gilson, A.M., Dahl, J.L. 2000. Trends in medical use and abuse of opioid analgesics. Between 1990-1996 the use of all agents, with the exception of meperidine, increased from between 19% and 59%.  Drug abuse due to opioids and narcotics increased by only 6.6%.  As a proportion of all drug abuse, narcotic abuse decreased by 2% in the same period.  Specifically, abuse of meperidine decreased by 39%, oxycodeine by 29%, fentanyl by 59%, and hydromorphine by 15%.  There was a 3% increase in drug abuse related to morphine.

Lobbezoo F, Visscher CM, Naeije M. 2004.  Impaired health status, sleep disorders, and pain in the craniomandibular and cervical spinal regions.  Eur J Pain 8(1):23-30.  “Both musculoskeletal pain in the trigemino-cervical area and widespread body pain are associated with an increased impairment of health status.  Also, sleep disorders are frequently found in patients with chronic pain in the craniomandibular and cervical spinal regions as well as in patients with widespread pain.  The more painful areas there are, the likelier it is that sleep disorders are present.”

Lockwood, A. H., R. J. Salvi, M. L. Coad, M. L. Towsley, D. S. Wack and B. W. Murphy.  1998.The functional neuroanatomy of tinnitus: evidence for limbic system links and neural plasticity.  Neurology 50(1):114-120.

Loeser JD. 2005.  Quo Vadis. Poena.  J Musculoskeletal Pain 13(3).  This editorial pinpoints some problems in the development of the field of chronic pain management.  One is the use of pain clinics as dumping grounds for complex cases.  Much of chronic pain is preventable, but it is not being prevented.  “Chronic illness will become the major health care issue in the 21st century, as the population ages and infectious diseases are better treated.”  “...we will need pain managements who have a broad overview of the diagnostic and therapeutic strategies that will provide the best possible outcomes.”  “Payers and providers will need to recognize that chronic pain is like diabetes: cure is not the goal.  Instead, management with the goal of minimizing morbidity, improving function, and containing costs is the optimal outcome.”

 

Loeser, RF, Shakoor, N. 2003.  Aging or osteoarthritis: which is the problem?  Rheum Dis Clin North Am 29(4):653-673.  These authors realize that OA is not an inevitable part of getting old, and that the progression of structural deterioration in OA may be prevented by improving neuromuscular function.  Structural damage does not always correspond to joint deterioration, and proprioception is often involved, as is muscle weakness and lack of balance.  What is missing in this article is often at the heart of these things: myofascial trigger points.

Loevinger BL, Muller D, Alonso C et al. 2007.  Metabolic syndrome in women with chronic pain.  Metabolism 56(1):87-93.  “Women with chronic pain from fibromyalgia are at an increased risk for metabolic syndrome...”

Loh, N. K., D. S. Dinner, N. Foldvary, F. Skobieranda and W.W. Yew. 1999. Do patients with obstructive sleep apnea wake up with headaches?  Arch Intern Med 159(15):1765-8.

Lombard L., Augustyn M.N., Ascott-Evans B.H.  The metabolic syndrome — pathogenesis, clinical features and management.  Cardiovasc J S Afr 13(4):181-6.  “The metabolic syndrome is a highly prevalent clinical entity, which is often overlooked and may have far-reaching health implications to the patient.  Up to 80% of patients with the metabolic syndrome die as a result of cardiovascular complications.  Insulin resistance is the central component of this complex syndrome and should be appropriately addressed to ensure the best possible outcome for our patients.”

Long, D. M., M. BenDebba, W. S. Torgerson, R. J. Boyd, E. G. Dawson, R. W. Hardy, J. T. Robertson, G. W. Sypert and C. Watts.  1996.  Persistent back pain and sciatica in the United States: patient characteristics.  J Spinal Disord 9(1):40-58.

Lord, S. R., M. W. Rogers, A. Howland and R. Fitzpatrick.  1999.  Lateral stability, sensorimotor function and falls in older people.  J Am Geriatr Soc 47(9):1077-81.

Lorenz, J., H. Beck and B. Bromm.  1997.  Cognitive performance, mood and experimental pain before and during morphine-induced analgesia in patients with chronic non-malignant pain. Pain 73(3):369-375.

Lorton D, Lubahn CL, Estus C et al. 2006.  Bidirectional communication between the brain and the immune system: implications for physiological sleep and disorders with disrupted sleep.  Neuroimmunomodulation. 13(5-6):357-374.  “The central nervous system (CNS) modulates immune function by signaling target cells of the immune system through autonomic and neuroendocrine pathways.  Neurotransmitters and hormones produced and released by these pathways interact with immune cells to alter immune functions, including cytokine production.  Cytokines produced by cells of the immune and nervous systems regulate sleep.  Cytokines released by immune cells, particularly interleukin-1beta and tumor necrosis factor-alpha, signal neuroendocrine, autonomic, limbic and cortical areas of the CNS to affect neural activity and modify behaviors (including sleep), hormone release and autonomic function.  In this manner, immune cells function as a sense organ, informing the CNS of peripheral events related to infection and injury.  Equally important, homeostatic mechanisms, involving all levels of the neuroaxis, are needed, not only to turn off the immune response after a pathogen is cleared or tissue repair is completed, but also to restore and regulate natural diurnal fluctuations in cytokine production and sleep.”  [This shows the interactivity of sleep dysfunction and immune dysfunction, common interactive diagnoses in patients with FM and CMP.  DJS]

Lotaif AC, Mitrirattanakul S, Clark GT. 2006.  Orofacial muscle pain: new advances in concept and therapy.  J Calif Dent Assoc. 34(8):625-630.  “The probable mechanisms underlying chronic myogenous pains and trigger points phenomena are discussed.  Treatment options of the myogenous masticatory pain conditions including physical medicine modalities, as well as several types of pharmacologic agents, are presented.”    

Loth, S., B, Petruson, G. Lindstedt and B. A. Bengtsson.  1998.  Improved nasal breathing in snorers increases nocturnal growth hormone secretion and serum concentrations of insulin-like growth factor 1 subsequently.  Rhinology 36(4):179-83.   

Lotsch J, Skarke C, Liefhold J et al. 2004.  Genetic predictors of the clinical response to opioid analgesics: clinical utility and future perspectives.  Clin Pharmacokinet. 43(14):983-1013.  Genetics can affect analgesic response to opioids (some patients may need higher doses to achieve the desired analgesia), affect metabolism of opioids, or cause drug reactions. 

 

Loucks TM, De Nil LF. 2006.  Anomalous sensorimotor integration in adults who stutter: a tendon vibration study.  Neurosci Lett. [May 11 Epub ahead of print]  “AWS (adults who stutter) use proprioceptive information less efficiently than normal speakers, which could interfere with sensorimotor integration during speech production.”  [This study did not evaluate patients for myofascial TrPs, which can often cause proprioceptive dysfunction, although it does mention that movement dysfunction is often associated with stuttering.  Some cases of stuttering may be related to myofascial TrPs, but studies are needed on this.  DJS]

Loudon, J. K., M. Ruhl and E. Field. 1997. Ability to reproduce head position after whiplash injury.  Spine. 22(8):865-8.

Lovy, M. R., G. Starkebaum and S. Uberoi. 1996. Hepatitis C infection presenting with rheumatic manifestations: a mimic of rheumatoid arthritis. J Rheumatol 23(6):979-983.

Lowe JC, Yellin J, Honeyman-Lowe G. 2006.  Female fibromyalgia patients: lower resting metabolic rates than matched healthy controls.  Med Sci Monit. 12(7):CR282-289.  This study indicates that FMS patients have a low metabolic rate, adjusted for patient fat percentage differential.  The study also reiterates what other research has found: that TSH, FT(4) and FT(3) values are not reliable indicators in FMS patients.

 

Lowe, J.C., Honeyman-Lowe, G. 1999. Ultrasound treatment of trigger points: differences in technique for myofascial pain syndrome and fibromyalgia patients.  This is a report of clinical experience described in terms of an experimental approach without presentation of hard data. The details of treatment depend strongly on what the patient feels.  The caveat that FMS patients are prone to be hyperreactive to ultrasound therapy and need to be treated less vigorously is consistent with their strong reaction to other treatments and life experiences.  It takes much more skill and gentleness to successfully treat MTrPs of FMS patients than uncomplicated MTrPs.

Lowe, J. C. and G. Honeyman-Lowe.  1998.  Facilitating the decrease in fibromyalgic pain during metabolic rehabilitation: an essential role for soft tissue therapies.  J Bodywork &Movement Therapies 2(4):208-217.

Lowe, J. C., M .E. Cullum, L. H. Graf Jr., J. Yellin. 1997.  Mutations in the c-erbA beta gene: do they underlie euthyroid fibromyalgia?  Med Hypo 48 (2): 125-135.

Lubiatowski P, Romanowski L, Kruczynski J et al. 2003.  Proprioception in pathophysiology and treatment of shoulder instability.  Ortop Traumatol Rehabil. 5(4):421-425.  “Restoration of joint proprioception and neuromuscular control seems to be an essential part of treatment in shoulder instability.”  [This may be accomplished, at least in part, by treatment of co-existing MTPs. DJS]

Lucas KR, Rich PA, Polus BI. 2007.  Do latent trigger points affect muscle activation patterns?  J Musculoskel Pain 15 (Supp 13):30 item 49.  [Myopain 2007 Poster]  “LTrPs (latent trigger points) alter the timing of muscle activation in common movement patterns suggesting that they should be treated.  Mechanisms that might mediate the effects observed are proposed.”  [Latent MTPs cause muscle dysfunction and restriction of range of motion, and may affect the way muscle function groups work together.  Care must be taken not to equate MTPs only with pain.  The dysfunction caused must be taken as seriously. DJS]

Ludwig DS. 2003. Diet and development of the insulin resistance syndrome.  Asia Pac J Clin Nutr 12 Suppl:S4.  “Among modifiable factors including weight loss and exercise, dietary composition appears to have an important effect on development of IRS.  The available evidence suggests that IRS, and therefore diabetes and cardiovascular disease, can be prevented by a high fiber/low glycemic index diet containing dairy products and a higher amount of unsaturated fat than currently recommended.”

Ludwig, DS, JA Majzoub, A Al-Zahrani, GE Dallal, I Blanco and SB Roberts.  1999.  High glycemic index foods, overeating, and obesity.  Pediatrics 103(3):E26.

Lumley, M., J. Smith, D. Longo. 2002. The relationship of alexithymia to pain severity and impairment among patients with chronic myofascial pain. Comparisons with self-efficacy, catastrophizing, and depression. Difficulty in recognizing, accepting and describing emotional reactions to myofascial pain symptoms and their impact correlates with the suffering component of the illness, independent of self-efficacy or catastrophizing.

Lund, B. C., K. A. Bever-Stille and P. J. Perry.  1999.  Testosterone and andropause: the feasibility of testosterone replacement therapy in elderly men.  Pharmacotherapy 19(8):951-6.

Lund E, Kendall SA, Janerot-Sjoberg B et al. 2003.  Muscle metabolism in fibromyalgia studied by P-31 magnetic resonance spectroscopy during aerobic and anaerobic exercise.  Scand J Rheumatol 32(3):138-145.  “Fibromyalgia patients seem to utilize less of the energy rich phosphorus metabolites at maximal work despite pH reduction.  They seemed to be less aerobically fit and reached the anaerobic threshold earlier than the controls.”

Lundberg M, Larsson M, Ostlund H et al. 2006.  Kinesiophobia among patients with musculoskeletal pain in primary healthcare.  J Rehabil Med. 38(1):37-43.  “…factors that seemed to be associated with kinesiophobia were interference, disability, pain severity, pain intensity, life control, affective distress, depressed mood and solicitous response.  The multiple logistic regression analysis showed no significant associations.”  “Kinesiophobia is a commonly seen factor among patients with musculoskeletal pain, which ought to be taken into consideration when designing and performing rehabilitation programs.”  [It is also important to understand that myofascial TrPs cause pain at the end of the range of motion, and it is logical for the patient to avoid range of motion when there is pain at the end of that range of motion.  The TrPs must be treated and the range of motion restored as much as possible so that the reason for the fear is removed.  Only then can remaining fear be considered as true kinesiophobia.  DJS]

Lundeberg, T., K. Uvnas-Moberg, G. Agren and G. Bruzelius.  1994.  Anti-nociceptive effects of oxytocin in rats and mice.  Neurosci Lett 170(1):153-157.

Luoto, S., S. Taimela, H. Hurri and H. Alaranta.  1999.  Mechanisms explaining the association between low back trouble and deficits in information processing.  A controlled study with follow-up.  Spine 24(3):255-61.  

Luoto, S., H. Aalto, S. Taimela, H. Hurri, I. Pyykko and H. Alaranta.  1998.  One-footed and externally disturbed two-footed postural control in patients with chronic low back pain and healthy subjects.  A controlled study with follow-up.  Spine 23(19):2089-90.

Lupien, S. J., S. Gaudreau, B. M. Tchiteya, F. Maheu, S. Sharma, N. P. Nair, R. L. Hauger, B. S. McEwen and M. J. Meaney.  1997.  Stress-induced declarative memory impairment in healthy elderly subjects: relationship to cortisol reactivity.  J Clin Endocrinol Metab 82(7):2070-5. 

Lupien, S. J. and McEwen B. S. 1997. The acute effects of corticosteroids on cognition: integration of animal and human model studies.  Brain Res Brain Res Rev 24(1): 1-27. 

Lupien, S.J., N. P. Nair, S. Briere, F. Maheu, M. T. Tu, M. Lemay, B. S. McEwen, M. J. Meaney. 1999. Increased cortisol levels and impaired cognition in human aging: implication for depression and dementia in later life. Rev Neurosci 10(2):17-39.

Lurie, M. , K. Caidahl , G. Johansson and B. Bake. 1990. Respiratory function in chronic primary fibromyalgia. Scand J Rehabil Med 22(3):151-5.

Lutz J, Schelling G, Stahl R et al.  Diffuse Tensor Imaging (DTI) danisotropic changes in the brain associated with chronic low back pain.  Radiological Society of North America Conference 29 Nov 2006.  Chicago, IL.  (Conf. Nov 26-Dec 1)  “...chronification of lower back pain is associated with cortical and subcortical microstructural anisotropy changes .... these results argue for plastic changes of the cingulate gyrus, postcentral gyrus and the prefrontal cortex in chronic pain processing.”  There are microstructural changes in the brains of chronic pain patients, and DTI may explain and map some of what is happening in chronic pain.

Lyketsos, C. G., E. Garrett, K. Y. Liang and J. C. Anthony.  1999.  Cannabis use and cognitive decline in persons under 65 years of age.  Am J Epidemiol 149(9):794-800.

Lynch JJ 3rd, Wade CL, Mikusa JP et al. 2005.  ABT-594 (a nicotinic acetylcholine agonist): anti-allodynia in a rat chemotherapy-induced pain model.  Eur J Pharmacol. 509(1):43-48.  ABT-594 ((R)-5-(2-azetidinylmethoxy)-2-chloropyridine is in a new class of pain relievers.  They work mainly by activating nicotinic acetylcholine receptors in the neurons.  This medication blocks the main pain transmitter receptors (acute and chronic pain) and also affects local pain signaling that can contribute to central sensitization, without toxic side effects.  [Phase II human trials for acute and chronic pain are about to begin on this medication which is a synthetic variation of Epibatidine without the toxicity of that compound. DJS]

Mabry, R. L. and C. S. Mabry. 2000.  Allergic fungal sinusitis: the role of immunotherapy Otolaryngol Clin North Am 33(2):433-440.

Macedo JA, Hesse J, Turner JD et al. 2007.  Adhesion molecules and cytokine expression in fibromyalgia patients: increased L-selectin on monocytes and neutrophils.  J Neuroimmunol.  [Jun 27 Epub ahead of print]  “This study shows a slight disturbance in the innate immune system of FM patients and suggests an enhanced adhesion and recruitment of leukocytes to inflammatory sites.”

Macgregor J, von Schweinitz DG. 2006.  Needle electromyographic activity of myofascial trigger points and control sites in equine cleidobrachialis muscle – an observational study.  Acupunct Med. 24(2):61-70.  “Equine myofascial trigger points can be identified and have similar objective signs and electrophysiological properties to those documented in human and rabbit skeletal muscle tissue.  The important differences from findings in human studies are that referred pain patterns and the reproduction of pain profile cannot be determined in animals."

Maekawa K, Clark GT, Kuboki T. 2002.  Intramuscular hypoperfusion, adrenergic receptors, and chronic muscular pain. Aug 3(4):251-260.  This review focuses on the sympathetic connection between fibromyalgia and myofascial pain.  The authors state “What cannot be done at this time and is needed in the future is to compare and contrast to what degree the regional muscle pain disorder (myofascial) is similar or different from the more generalized disorder (fibromyalgia.)”  I agree that it must be done.  I also think that it can be.

Maes, M., I. Libbrecht, F. Van Hunsel, A. H. Lin, L. De Clerck, W. Stevens, G. Kenis, R. de Jongh, E. Bosmans and H. Neels. 1999. The immune-inflammatory pathophysiology of fibromyalgia: increased serum soluble gp130, the common signal transducer protein of various neurotrophic cytokines.

Maes, M., A. Lin, S. Bonaccorso, F. Van Hunsel, A. Van Gastel, L. Delmeire, M. Biondi, E. Bosmans, G. Kenis and S. Scharpe. 1998. Increased 24-hour urinary cortisol excretion in patients with post-traumatic stress disorder and patients with major depression, but not in patients with fibromyalgia. Acta Psychiatr Scand 98(4):328-35.

Magaldi M, Moltoni L, Biasi G, Marcolongo R. 2000. Role of intracellular calcium ions in the physiopathology of fibromyalgia syndrome. Boll Soc Ital Biol Sper (1-2:)1-4. "In fibromyalgia patients the intracellular calcium concentration is significantly reduced in comparison to that of healthy controls: the reduced intracellular calcium concentration seems to be a peculiar characteristic of fibromyalgia patients and may be potentially responsible for muscular hypertonus."

Magnusson, M. L., M. H. Pope, L. Hasselquist, K. M. Bolte, M. Ross, V. K. Goel, J. S. Lee, K. Spratt, C. R. Clark and D. G. Wilder. 1999. Cervical electromyographic activity during low-speed rear impact. Eur Spine J 8(2):118-25.

Magnussen, T. 1994. Extra cervical symptoms after whiplash trauma. Cephalalgia 14(3):223-227.

Maher, J. 2000. Report investigating the importance of head restraint positioning in reducingneck injury in rear impact. Accid Anal Prev 32(2):299-305.

Mahowald ML, Singh JA, Majeski P. 2005.  Opioid use by patients in an orthopedics spine clinic.  Arthritis Rheum. 52(1):312-321.  “This study provides clinical evidence to support and protect physicians treating patients with chronic musculoskeletal diseases, who may be reluctant to prescribe opioids because of possible sanctions from regulatory agencies.  More important, it will benefit patients by permitting them to receive these effective, safe medications.

 

Maiese K, Chong ZZ, Li F. 2005.  Driving cellular plasticity and survival through the signal transduction pathways of metabotropic glutamate receptors.  Curr Neurovasc Res. 2(5):425-446.  “Metabotropic glutamate receptor (mGluRs)…system impacts upon neuronal, vascular, and glial cell function and is activated by a wide variety of stimuli that includes neurotransmitters, peptides, hormones, growth factors, ions, lipids, and light.  Employing signal transduction pathways that can modulate both excitatory and inhibitory responses, the mGluR system drives a spectrum of cellular pathways that involve protein kinases, endonucleases, cellular acidity, energy metabolism, mitochrondrial membrane potential, caspases, and specific mitogen-activated protein kinases.  Ultimately these pathways can converge to regulate genomic DNA degradation, membrane phosphatidylserine (PS) residue exposure, and inflammatory microglial activation.”

Maigne, R. 1997. Pain syndromes of the thoracolumbar junction. Myofascial Pain–Update in Diagnosis and Treatment. Phys Med Rehab Clin North Am 8(1):87-100.

Mailis A, Papagapiou M, Umana M, Cohodarevic T, Nowak J, Nicholson K.  Unexplainable nondermatomal somatosensory deficits in patients with chronic nonmalignant pain in the context of litigation/compensation: a role for involvement of central factors? J Rheumatol 2001 28(6):1385-93. Nondermatomal somatosensory deficits (NDSD), commonly associated with chronic pain conditions, may often be associated with impairment of vibration, reduced strength, dexterity of movement, and extreme sensitivity to superficial skin palpation or profound insensitivity to deep pain. Spatial, temporal, qualitative, and evolutionary patterns of NDSD emerged associated with cognitive/affective symptoms.

Maitre M, Humbert JP, Kemmel V et al. 2005.  [A mechanism for gamma-hydroxybutyrate (GHB) as a drug and a substance of abuse.]  Med Sci (Paris) 21(3):284-289. [French]  “Gamma-hydroxybutyrate (GHB) increases slow-wave deep sleep and the secretion of growth hormone and besides its role in anesthesia, it is used in several therapeutic indications including alcohol withdrawal, control of daytime sleep attacks and cataplexy in narcoleptic patients and is proposed for the treatment of fibromyalgia.”

 

Maizels M, McCarberg B. 2005.  Antidepressants and antiepileptic drugs for chronic non-cancer pain.  Am Fam Physician 71(3):483-490.  “The development of newer classes of antidepressants and second-generation antiepileptic drugs has created unprecedented opportunities for the treatment of chronic pain.  These drugs modulate pain transmission by interacting with specific neurotransmitters and ion channels...  Tricyclic antidepressants have documented (although limited) efficacy in the treatment of fibromyalgia and chronic low back pain.  Recent evidence suggests that duloxetine and pregabalin have modest efficacy in patients with fibromyalgia.”

 

Majlesi J, Unalan H. 2004.  High-power pain threshold ultrasound technique in the treatment of active myofascial trigger points: a randomized, double blind, case-control study.  Arch Phys Med Rehabil 85:833-836.  This study found that high-power ultrasound, using a specific technique, can quickly find and treat TrPs.  [There was no significant change in range of motion, which may indicate that the TrPs were simply rendered latent, but the pain levels were reduced significantly.  This therapy shows promise, although there are some areas in which it cannot be utilized.  DJS]

 

Majlesi J, uNalan H.  2004.  High-power pain threshold ultrasound technique in the treatment of active myofascial trigger points:  A randomized, double-blind, case-control study.  Arch Phys Med Rehabil. 85(5):833-836.  This technique was more effective than conventional ultrasound.

Mak, M.K., Ng, P.L. 2003.  Mediolateral sway in single-leg stance is the best discriminator of balance performance for T’ai-Chi practitioners.  Arch Phys Med Rehabil 84(5):683-686.  “T’ai-chi practitioners performed better both in clinical and laboratory tests when compared with subjects who did not practice T'ai Chi. More T'ai-Chi experience was associated with better postural control.  [It may be helpful for patients with myofascial TrPs who are t’ai chi players (and their medical team) to remember this, persevere, and concentrate on TrPs that affect mediolateral sway balance. DJS]

Makolkin, V.I., Podzolkov V.I., Napalkov D.A. 2002. [Metabolic syndrome from the point of view of a cardiologist: diagnosis, non drug and drug treatment.] Kardiologiia 42(12:91-7.  [Russian]  “Timely diagnosis and treatment of metabolic syndrome is important because of high prevalence of this pathology....For correction of metabolic changes metformin is used in addition to non drug methods which include diet and exercise.  Treatment with metformin allows to decrease insulin resistance and thus severity of derangements of metabolism.  [Metformin is an inexpensive and useful part of control of metabolic syndrome. DJS]

Malanga GA, Gwynn MW, Smith R et al. 2002.  Tizanidine is effective in the treatment of myofascial pain syndrome.  Pain Physician 5(4):422-432.

Malleson, P. N., M. al-Matar and R. E. Petty. 1992. Idiopathic musculoskeletal pain syndromes in children. J Rheumatol 19(11):1786-1789.

Mallinson, A. I. and N. S. Longridge. 1998. Dizziness from whiplash and head injury: differences between whiplash and head injury. Am J Otol 19(6):814-8.

Malmberg, A. B., C. Chen, S. Tonegawa and A.I. Basbaum. 1997. Preserved acute pain and reduced neuropathic pain in mice lacking PKCgamma. Science 278(5336):279-83.

Mamelak M. 2000.  The motor vehicle collision injury syndrome.  Neuropsychiatry Neuropsychol Behav Neurol. 13(2):125-135.  “Occupants of motor vehicles involved in a collision often develop a disabling syndrome consisting of head, neck and back pain; impaired short-term memory and concentration; fatigue and a loss of stamina; poor balance; and a change in personality.  Injury victims experience a loss of motivation, emotional lability, and a decrease in libido.  It is hypothesized that the collision impact produces an inertial strain injury to the anterior regions of the brain which depresses the functions of the frontotemporal lobes, at the same time, sensitizing somatosensory neural afferent systems.  Damage to the orbital surfaces of the frontotemporal lobes, in particular, impairs the gating mechanisms that normally limit sensory input to the brain and further promotes central sensitization.  Early intervention to arrest the injury-induced metabolic cascade, and treatment with agents that activate cerebral metabolism may mitigate the symptoms of this injury syndrome.”

Manber, R. and R. Armitage. 1999. Sex, steroids, and sleep: a review. Sleep 22(5):540-55.

Manco, M., G. Mingrone, A. V. Greco, E. Capristo, D. Gniuli, A. De Gaetano and G. Gasbarrini.2000. Insulin resistance directly correlates with increased saturated fatty acids in skeletal muscle triglycerides. Metabolism 49(2):220-4.

Mandal, A. C. 1984. The correct height of school furniture. Physiotherapy 70(2):48-53.

Manfredini D, Tognini F, Montagnani G et al. 2004.  Comparison of masticatory dysfunction in temporomandibular disorders and fibromyalgia.  Minerva Stomatol. 53(11-12):641-650.  “Most patients with fibromyalgia (86.7%) report signs and symptoms localized at the stomatognathic system; by contrast, only a minority of patients with temporomandibular disorders (10%) are actually affected by fibromyalgia.”

 

Manfredini D, Cantini E, Romagnoli M et al. 2003.  Prevalence of bruxism in patients with different research diagnostic criteria for temporomandibular disorders (RDC/TMD) diagnoses.  Cranio 21(4):279-285.  Bruxism has a stronger association with muscle dysfunction than with disc and joint dysfunctions.  Patients with bruxism should be investigated for the presence of muscle dysfunctions.

Mani N, Jun HW, Beach JW et al. 2003.  Solubility of guaifenesin in the presence of common pharmaceutical additives.  Pharm Dev Technol 8(4):385-96.  Common additives can change the aqueous solubility of guaifenesin.  This indicates that all compounds of guaifenesin may not have equal solubility and possibly may not be equivalent in bioavailability as well. 

Mann, J. J., K. M. Malone, D. A. Nielsen, D. Goldman, J. Erdos and J. Gelernter. 1997. Possible association of a polymorphism of the tryptophan hydroxylase gene with suicidal behavior in depressed patients. Am J Psychiatry 154(10):1451-1453.

Mannerkorpi K. 2005.  Exercise in fibromyalgia. Curr Opin Rheumatol. 17(2):190-194.  “The recent studies support existing literature on the benefits of exercise for patients with fibromyalgia.  The outcomes appear to be related to the program design and the characteristics of the populations studied.  As the patients with fibromyalgia form a heterogeneous population, more research is required to identify the characteristics of patients who benefit from specific modes of exercise.  Moreover, long-term planning is needed to motivate the patients to continue regular exercise.”

 

Mannerkorpi K, Gard G. 2003.  Physiotherapy group treatment for patients with fibromyalgia – an embodied learning process. Disabil Rehabil 25(24):1372-1380.  This study found that “Interactions between the co-participants promoted the process of creating new patterns of thinking and acting in the social world” that were beneficial to patients with fibromyalgia.  A good, positive support group may provide the same thing to some degree.

 

Mannerkorpi K., Ahlmen M., Ekdahl C. 2002.  Six- and 24-month follow-up of pool exercise therapy and education for patients with fibromyalgia.  Scand J Rheumatol 31(5):306-10.  This study showed lasting improvements even 24 months after the completion of the therapy.  [It would be valuable to evaluate the use of pool therapy in patients with both fibromyalgia and chronic myofascial pain, and to specify which pool temperatures are most effective. DJS]

Mannerkorpi, K., T. Kroksmark and C. Ekdahl. 1999. How patients with fibromyalgia experience their symptoms in everyday life. Physiother Res Int 4(2):110-22.

Maquet D, Croisier JL, Renard C, Crielaard JM. 2002. Muscle performance in patients with fibromyalgia. Joint Bone Spine 69(3):293-9. "This study of the three pathways supplying energy to muscle confirms that muscle function is globally impaired in FMS patients.  The results suggest that the impairment predominated on aerobic processes."

Marchettini, P., F. Formaglio and M. Lacerenza. 1999. Clinical interpretations of intraneural muscle nociceptors recordings in humans. J Musculoskel Pain 7(1-2):55-59.

Marchioni D, Ghidini A, Daari S et al. 2005.  The normal-weight snorer: polysomnographic study and correlation with upper airway morphological alterations.  Ann Otol Rhinol Laryngol. 114(2):144-146.  “The major risk factor for developing OSAS in normal-weight snorers appears to be anatomic abnormalities.  The normal-weight snorer needs to be thoroughly investigated because of the significant risk of developing OSAS and for the detection of multiple concomitant sites of obstruction.”  [This paper does not discuss muscle contracture due to TrPs, but it could be a variable factor as well, and the presence of TrPs in some muscle may indicate the need for automatically adjusting CPAP set to maximum high equal to that of the sleep study need of the patient.]

Marcus DA. 2006.  A review of perinatal acute pain: treating perinatal pain to reduce adult chronic pain.  J Headache Pain 7(1):3-8.  “Over the last decade, studies have suggested that exposure to repeated painful procedures during the early perinatal period results in profound changes in sensitivity of nociceptive pathways.  Both animal and human studies show that early pain experiences increase pain responses beyond the period of infancy.  These data suggest a need to increase implementation of guidelines for minimizing pain exposures during infancy.”

Marcus, D. A. 2000. Treatment of nonmalignant chronic pain. Am Fam Physician 61(5):1331-8, 1345-6.

Margoles M. 1983.  Stress neuromyelopathic pain syndrome (SNPS): Report of 333 patients.  J Neuro Ortho Surg 4(4):317-322.  This is an older but very important study using the term “stress neuromyelopathic pain syndrome” for what Travell and Simons describe in their later texts as “post-traumatic hyperirritability syndrome.”  The authors agree that these are the same conditions.  This condition can be caused by severe or repeated trauma especially to the head, neck and back, but can also be caused by biochemical trauma. This author found that patients with this condition often have low levels of B vitamins but may not respond to oral supplements, and 30-50% of these patients have abnormally high vitamin A.  Eating foods high in vitamin A could lead to a flaring of symptoms.  This condition often starts locally but can spread to overlapping pain patterns.  Clinical findings are clearly specified, and the fact that this can often be mistakenly diagnosed as neuropathy caused by disc problem when the disc is not the cause at all, but the metabolic changes that this syndrome has brought about.  [After extensive discussion with Drs. Michael S. Margoles and David G. Simons, I am convinced that these are early descriptions of what can happen when early myofascial trigger points and fibromyalgia are not treated promptly and aggressively.  This paper clearly describes in detail a scenario of the unfolding of this condition.  I advise any clinician to get a copy of this important paper. DJS]

Maria G, Cadeddu F, Brisinda D et al. 2005.  Management of bladder, prostatic and pelvic floor disorders with botulinum neurotoxin.  Curr Med Chem. 12(3):247-265.  “Botulinum toxin (BoNT) has been increasingly used in the interventional treatment of several other disorders characterized by excessive or inappropriate muscle contractions.  BoNT is being investigated for the control of the pain, and for the management of tension or migraine headaches and myofascial pain syndrome.  This paper presents current data on the use of BoNT to treat pelvic floor disorders.”

Marin, P., and S. Arver. 1998. Androgens and abdominal obesity. Ballieres Clin Endocrinol Metab 12(3):441-51.

Martin DP, Sletten CD, Williams BA et al. 2006.  Improvement in fibromyalgia symptoms with acupuncture: results of a randomized controlled trial.  Mayo Clin Proc. 81(6):749-757.  “We found that acupuncture significantly improved symptoms of fibromyalgia.  Symptomatic improvement was not restricted to pain relief and was most significant for fatigue and anxiety.”  [The subset of FMs patients who have anxiety and fatigue may benefit from specific acupuncture therapy.  DJS]

Martin, W. J., A. B. Malmberg and A. I. Basbaum. 1998. Pain: nocistatin spells relief. Curr Biol 8(15):R525-7.

Martinez-Lavin M. 2004.  Fibromyalgia as a sympathetically maintained pain syndrome.  Curr Pain Headache Rep. 8(5):385-389.  “...patients with FM display signs of relentless sympathetic hyperalgesia...”

 

Martinez-Lavin, M. 2002. The autonomic nervous system, and fibromyalgia. J Musculoskel Pain 10(1/2):221-228.  Fibromyalgia is a multisystem illness. Many researchers have found indications that fibromyalgia is a form of autonomic nervous system dysfunction. 

 

Martinez-Lavin, M. 2002. Management of dysautonomia in fibromyalgia. Rheum Dis Clin North Am 28(2):379-87. "The realization of dysautonomia in FM has opened the possibility for new and different therapeutic interventions.  Much more research is needed to better define the role of ANS in the pathogenesis of FM.  If this research supports current hypotheses, therapeutic trials with disciplines and substances intended to correct autonomic dysfunction will be indicated."

Martinez-Lavin, M., A. G. Hermosillo, M. Rosas and M. E. Soto. 1998. Circadian studies of autonomic nervous balance in patients with fibromyalgia: a heart rate variability analysis. Arthritis Rheum 41(11):1966-71.

Martinez-Lavin, M., A. G. Hermosillo, C. Mendoza, R. Ortiz, J. C. Cajigas, C. Pineda, A. Nava, and M. Vallejo. 1997. Orthostatic sympathetic derangement in subjects with fibromyalgia. J Rheumatol 24(4): 714-718.

Martino, A. M. 1998. In search of a new ethic for treating patients with chronic pain: What can medical boards do? J Law, Medicine & Ethics 26(4):332-49.

Marwick, C. 1999. New advocates of adequate treatment say have no fear of pain or of prosecution. JAMA 281:406-407.

Masand, P. S. and S. Gupta. 1999. Selective serotonin-reuptake inhibitors: an update. Harv Rev Psychiatry 7(2):69-84.

Mascia P, Brown BR, Friedman S. 2003.  Toothache of nonodontogenic origin: a case report.  J Endod 29(9):608-10. These authors found that a masseter trigger point was the source of tooth pain in this patient.  The patient had immediate relief after trigger point injection, with no recurrence of the pain. Dental practitioners need myofascial medicine as part of their training and their differential diagnosis.   

Masood, K., C. Wu, U. Brauneis and F. F. Weight. 1994. Differential ethanol sensitivity ofrecombinant N-methyl-D-aspartate receptor subunits. Mol Pharmacol 45(2):324-329.

Massa F, Storr M, Lutz B. 2005.  The endocannabinoid system in the physiology and pathophysiology of the gastrointestinal tract.  J Mol Med. [August 26 Epub ahead of print ]  “The endocannabinoid system may serve as a potentially promising therapeutic target against different GI disorders, including frankly inflammatory bowel diseases (e.g., Crohn’s disease), functional bowel diseases (e.g., irritable bowel syndrome) and secretion- and motility-related disorders.”

Massey PB. 2007.  Reduction of fibromyalgia symptoms through intravenous nutrient therapy: results of a pilot clinical trial.  Altern Ther Health Med. 13(3):32-34.  “IVNT appears to be safe to reduce FM symptoms.”  The patients in this study had FM for at least 8 years and had no significant, lasting relief with conventional therapies.

Mathias S, Zihl J, Steiger A et al. 2004.  Effect of repeated gaboxadol administration on night sleep and next-day performance in healthy elderly subjects.  Neuropsychopharmacology Dec 15 [Epub ahead of print]  Gaboxadol improved sleep quality in healthy elderly subjects without side-effects.

Matsuda M, Imaoka T, Vomachka AJ et al. 2004.  Serotonin regulates mammary gland development via an autocrine-paracrine loop.  Dev Cell 6(2):193-203.  Dysfunctional serotonin signaling may be part of the reason some women with FMS experience problems nursing.  Nursing may begin normally, but the milk [production] hesitates or stops.

Matsumoto, Y. 1999. [Fibromyalgia syndrome]. Nippon Ronsho 57(2):364-9.[Japanese]

Matsutani LA, Marques AP, Ferreira EA et al. 2007.  Effectiveness of muscle stretching exercises with and without laser therapy at tender points for patients with fibromyalgia.  Clin Exp Rheumatol. 25(3):410-415.  “Laser therapy has not shown advantages when added to muscle stretching exercises.”

Matthews, D. A. , M. E. McCullough, D. B. Larson, H. G. Koenig, J. P. Swyers and M. G. Milano. 1998. Religious committment and health status: a review of the research and implications for family medicine. Arch Fam Med 7(2):118-124.

Mau, W. and H. Zeidler. 1999. [No title available]. Versicherungsmedizin 51(2):59-65 [German].

Mawe GM, Coates MD, Moses PL. 2006.  Review article: intestinal serotonin signaling in irritable bowel syndrome.  Aliment Pharmacol Ther. 23(8):1067-1076.  “Both genetic and epigenetic factors could contribute to decreased serotonin-selective reuptake transporter in irritable bowel syndrome.  A serotonin-selective reuptake transporter gene promoter polymorphism may cause a genetic predisposition, and inflammatory mediators can induce serotonin-selective transporter downregulation.  While a psychiatric co-morbidity exists with IBS, changes in mucosal serotonin handling support the concept that there is a gastrointestinal component to the aetiology of irritable bowel syndrome.”  [There are many patients with IBS and without a “psychiatric component” except for the general depression that one gets when one is given that “It’s All In Your Head” diagnoses.  Current research indicates that chronic illness often has intestinal permeability as a contributor.  When patients have invisible illnesses causing chronic pain and are given or take aspirin and NSAID that can contribute to intestinal permeability (see Galland, L. and www.functionalmedicine.org), IBS is a logical consequence.  It is nice to know that some researchers are finally discovering the GI component, but they are still stuck in the mindset that IBS is a basically psychological dysfunction. DJS]

May. K. P. , S. G. West, M. R. Baker and D. W. Everett. 1993. Sleep apnea in male patients with the fibromyalgia syndrome. Am J Med 94(5):505-508.

Mayer, E. A., R. Fass and S. Fullerton. 1998. Intestinal and extraintestinal symptoms in

Mayer-Davis, E. J. , R. D’Agostino Jr., A. J. Karter, S. M. Haffner, M. J. Rewers, M. Saad and R. N. Bergman.1998. Intensity and amount of physical activity on relation to insulin sensitivity: the Insulin Resistance Atherosclerosis Study. JAMA 279(9):669-74.

McAdam, B. F., F. Catella-Lawson, I. A. Mardini, S. Kapoor, J. A. Lawson and G. A. FitzGerald. 1999. Systemic biosynthesis of prostacyclin by cyclooxygenase (COX)-2: the human pharmacology of a selective inhibitor of COX-2. Proc Natl Acad Sci U S A 96(10):5890.

McBeth J, Chiu YH, Silman AJ et al. 2005.  Hypothalamic-pituitary-adrenal stress axis function and the relationship with chronic widespread pain and its antecedents.  Arthritis Res Ther. 7(5):R992-R1000.  “This is the first population study to demonstrate that those with established, and those psychologically at risk of, chronic widespread pain demonstrate abnormalities of HPA axis function, which are more marked in the former group.”  “We conclude that the occurrence of HPA abnormality in persons with chronic widespread pain is not fully explained by the accompanying psychological stress.”

McBeth, J., G. J. Macfarlane, S. Benjamin, S. Morris and A. J. Silman. 1999. The association between tender points, psychological distress, and adverse childhood experiences: a community-based study. Arthritis Rheum 42(7):1397-404.

McBride, J. L. , G. Arthur, R. Brooks and L. Pilkington. 1998. The relationship between a patient’s spirituality and health experiences. Fam Med 30(2):122-126.

McCabe CS, Cohen H, Blake DR. 2007. Somaesthetic disturbances in fibromyalgia are exaggerated by sensory motor conflict: implications for chronicity of the disease?  Rheumatology [Sep 1 Epub ahead of print]  “New perceptions included disorientation, pain, perceived changes in temperature, limb weight or body image.  Conclusions: Our findings support the hypothesis that motor-sensory conflict can exacerbate pain and sensory perceptions in those with FMS to a greater extent than in Hvs. [healthy volunteers]”

McCain, G. A. 1999. Treatment of fibromyalgia syndrome. J Musculoskel Pain 7(1-2):193-208.

McCall-Hosenfeld, J. S., Goldenberg, D.L., Hurwitz, S. et al. 2003. Growth Hormone and Insulin-Like Growth Factor-1 Concentrations in Women with Fibromyalgia.  J Rheumatol 30(4):809-14.  If the body mass index is taken into consideration, there is no significant association between premenopausal FMS patients and healthy controls with regard to average peak growth hormone.  The authors indicate that increase in age and obesity are both strongly linked to the GH-IGF-1 axis, and are factors that must be considered in research concerning FMS and the GH-IGF-1 axis.

McClaflin, R. R. 1994. Myofascial pain syndrome. Primary care strategies for early intervention. Postgrad Med 96(2):56-59.

McConaghy, P. M., P. McSorley, W. McCaughey and W. I. Campbell. 1998. Dextromethorphan and pain after total abdominal hysterectomy. Br J Anaesth 81(5):731-6.

McCoy JG, Tartar JL Bebis AC et al. 2007.  Experimental sleep fragmentation impairs attentional set-shifting in rats.  Sleep 30(1):52-60.  “24 hour SI (sleep interruption) produced impairment in an attentional set shifting that is comparable to the executive function and cognitive deficits observed in humans with sleep apnea or after a night of experimental sleep fragmentation.”

McCracken, L. M. 1998. Learning to live with the pain: acceptance of pain predicts adjustment in persons with chronic pain. Pain 74(1):21-27.

McCrimmon, R. J., I. J. Deary, B. J. P. Huntly, K. J .MacLeod and B. M. Frier. 1996. Visual information processing during controlled hypoglycaemia in humans. Brain 119(4):1277-1287.

McDaniel WW. 2003.  Electroconvulsive therapy in complex regional pain syndromes.  J ETC 19(4):226-229.  “In one of the cases, concomitant fibromyalgia was not relieved during 2 separate series of ETC.”

McDermott BE, Feldman MD. 2007.  Malingering in the medical setting.  Psychiatr Clin North Am. 30(4):645-662.  “…the physician should generally suspect malingering when there are tangible incentives and when reported symptoms do not match the physical examination or no organic basis for the physical complaints is found.”  [The authors take for granted that their readers, psychiatrists, can diagnose ALL diseases with standard tests and examinations.  Shame on them.  Whatever happened to the oath to “Do no harm?”  This paper is food for lawyers to deny patients care.  Intelligent and trained lawyers can make mincemeat out of it once they understand that many physicians are untrained in diagnosis of MTPs, and there are documented changes in FM patients that are not practical for the physician to perform.  [see: Harris RE, Clauw DJ, Scott DJ et al. 2007 and countless other references in this section.  DJS]

McFadden, S. A. 1996. Phenotypic variation in xenobiotic metabolism and adverse environmental response: focus on sulfur-dependent detoxification pathways. Toxicology 111(1-3):43-65.

McIver KL, Evans C, Kraus RM et al. 2005.  NO-mediated alterations in skeletal muscle nutritive blood flow and lactate metabolism in fibromyalgia.  Pain [Dec 20 Epub Ahead of Print]  “FM may be more sensitive than HC (healthy women) to the suppressive effect of nitric oxide on oxidative phosphorylation.”

McKee, D. D. and J. N. Chappel. 1992. Spirituality and medical practice. J Fam Pract 35(2):201.

McKeever TM, Lewis SA, Smit HA et al. 2005.  The association of acetaminophen, aspirin, and ibuprofen with respiratory disease and lung function.  Am J Respir Crit Care Med. 171(9):966-971.  “Use of acetaminophen [but not aspirin or ibuprofen] is associated with an increased risk of asthma and COPD [chronic obstructive pulmonary disease], and with decreased lung function.”

 

McLean SA, Williams DA, Harris RE et al. 2005.  Momentary relationship between cortisol secretion and symptoms in patients with fibromyalgia.  Arthritis Rheum. 52(11):3660-3669.  “Among women with FM, pain symptoms early in the day are associated with variations in function of the hypothalamic-pituitary-adrenal axis.”

McLean SA, Clauw DJ. 2005.  Biomedical models of fibromyalgia.  Disabil Rehabil. 27(12):659-665.  “The tender point criteria for FM have resulted in the common misconception among health care professionals that this spectrum of disorders is limited to women with high degrees of psychological distress.  A hallmark of FM is the presence of non-nociceptive, central pain.  There is evidence of centrally augmented pain processing, which can be detected both with sensory testing and by more objective measures (e.g., evoked potentials, functional neuroimaging).  An appreciation of the neurobiological basis for these disorders, and an understanding of some of the abnormalities of pain processing present in patients with FM, will hopefully provide greater understanding of these patients.  It may also serve to decrease the level of frustration and improve the care experience of both chronic pain patients and physicians.”

McLean SA, Williams DA, Clauw DJ. 2005.  Fibromyalgia after motor vehicle collision: evidence and implications.  Traffic Inj Prev. 6(2):97-104.  “The evidence that MVC trauma may trigger FM meets established criteria for determining causality, and has a number of important implications, both for patient care, and for research into the pathophysiology and treatment of these disorders.”

McNicholas WT, Bonsignore MR. 2007.  Sleep Apnoea as an independent risk factor for cardiovascular disease: current evidence, basic mechanisms and research priorities.  Eur Respir J. 29(1):156-178.  “Considerable evidence is available in support of an independent association between obstructive sleep apnoea syndrome (OSAS) and cardiovascular disease, which is particularly strong for systemic arterial hypertension and growing for ischaemic heart disease, stroke, heart failure, atrial fibrillation and cardiac sudden death.  The pathogenesis of cardiovascular disease in OSAS is not completely understood but likely to be multifactorial, involving a diverse range of mechanisms including sympathetic nervous system overactivity, selective activation of inflammatory molecular pathways, endothelial dysfunction, abnormal coagulation and metabolic dysregulation, the latter particularly involving insulin resistance and disordered lipid metabolism.”

 

McPartland JM, Giuffrida A, King J et al. 2005.  Cannabimimetic effects of osteopathic manipulative treatment.  J Am Osteopath Assoc. 105(6):283-291.  “Healing modalities popularly associated with changes in the endorphin system, such as OMT [osteopathic manipulative treatment], may actually be mediated by the endocannabinoid system.”

 

McPartland JM.  2004.  Travell trigger points – molecular and osteopathic perspectives.  JAOA