Blood supply and oxidative metabolism in muscle biopsies of female cleaners with and without myalgia

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Larsson, BrittLund University,Lunds universitet,Avdelningen för arbets- och miljömedicin,Institutionen för laboratoriemedicin,Medicinska fakulteten,Division of Occupational and Environmental Medicine, Lund University,Department of Laboratory Medicine,Faculty of Medicine (author)

Blood supply and oxidative metabolism in muscle biopsies of female cleaners with and without myalgia

Article/chapterEnglish2004

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Ovid Technologies (Wolters Kluwer Health),2004
printrdacarrier

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LIBRIS-ID:oai:DiVA.org:oru-6277
https://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-6277URI
https://doi.org/10.1097/00002508-200411000-00009DOI
https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-23219URI
https://lup.lub.lu.se/record/129705URI

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Language:English
Summary in:English

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SwePubSwePub

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Subject category:ref swepub-contenttype
Subject category:art swepub-publicationtype

Notes

OBJECTIVES: Pathomechanisms of work-related myalgia are poorly understood. Myalgia is thought to be caused by excitation of nociceptors present in the muscular tissue but not in the muscle fiber itself. Muscle contraction in combination with hypoxia is known to excite nociceptors. Morphologic analysis can contribute to the knowledge of the excitation of nociceptors. This study thoroughly examines the morphology of the trapezius muscle's capillary supply and signs of disturbed oxidative metabolism to understand their role in work-related myalgia. METHODS: Surgical trapezius muscle biopsies were obtained from 25 female cleaners with long-standing work-related myalgia, 25 female cleaners without trapezius myalgia, and 21 healthy teachers. Enzyme and immunohistochemical stainings were performed to highlight fibers with aberrant intermyofibrillar patterns, indicating a disturbed oxidative metabolism (also known as moth-eaten fibers) and a disturbed capillary supply of different fibers. RESULTS: A significantly lower number of capillaries per fiber area in cleaners suffering from myalgia compared with cleaners without trapezius myalgia was found. Moth-eaten fibers were found in the 3 groups, but these fibers were significantly more prevalent in the groups of cleaners than in the healthy teacher group. CONCLUSION: This work indicates that the capillary supply of trapezius is affected in work-related trapezius myalgia. More studies are needed to understand possible mechanisms that would explain the occurrence of moth-eaten fibers.

Subject headings and genre

MEDICIN OCH HÄLSOVETENSKAP Medicinska och farmaceutiska grundvetenskaper Fysiologi hsv//swe
MEDICAL AND HEALTH SCIENCES Basic Medicine Physiology hsv//eng
SAMHÄLLSVETENSKAP Annan samhällsvetenskap Tvärvetenskapliga studier inom samhällsvetenskap hsv//swe
SOCIAL SCIENCES Other Social Sciences Social Sciences Interdisciplinary hsv//eng
MEDICIN OCH HÄLSOVETENSKAP Hälsovetenskap Idrottsvetenskap hsv//swe
MEDICAL AND HEALTH SCIENCES Health Sciences Sport and Fitness Sciences hsv//eng
MEDICIN OCH HÄLSOVETENSKAP Hälsovetenskap Arbetsmedicin och miljömedicin hsv//swe
MEDICAL AND HEALTH SCIENCES Health Sciences Occupational Health and Environmental Health hsv//eng
MEDICINE
MEDICIN
Physiology
Fysiologi
INTERDISCIPLINARY RESEARCH AREAS
TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN
Sports
Idrott
Sports Science
Idrottsvetenskap
Fysiologi
Physiology

Added entries (persons, corporate bodies, meetings, titles ...)

Björk, JonasLund University,Lunds universitet,Avdelningen för arbets- och miljömedicin,Institutionen för laboratoriemedicin,Medicinska fakulteten,Division of Occupational and Environmental Medicine, Lund University,Department of Laboratory Medicine,Faculty of Medicine(Swepub:lu)ymed-jbj (author)
Kadi, Fawzi,1970-Örebro universitet,Institutionen för hälsovetenskap och medicin,RISPA- MEP-RG(Swepub:oru)fki (author)
Lindman, Rolf (author)
Gerdle, Björn,1953-Östergötlands Läns Landsting,Linköpings universitet,Hälsouniversitetet,Rehabiliteringsmedicin,Smärt- och rehabiliteringscentrum(Swepub:liu)bjoge88 (author)
Avdelningen för arbets- och miljömedicinInstitutionen för laboratoriemedicin (creator_code:org_t)

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