Journal
EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY
Volume 113, Issue 7, Pages 1883-1893Publisher
SPRINGER
DOI: 10.1007/s00421-013-2606-y
Keywords
HSP; Non-steroidal anti-inflammatory drugs; Muscle damage; Force recovery; mRNA; RT-PCR; Immunohistochemistry
Categories
Funding
- Danish Medical Research Council [10-094021, 271-07-0742]
- H:S Research Foundation (Copenhagen University Hospitals)
- Nordea Foundation
- Lundbeck Foundation
- Danish Rheumatism Association [R38-A328-B166, R54-A619-B270]
- Team Denmark [33241979-06]
Ask authors/readers for more resources
Non-steroidal anti-inflammatory drugs (NSAIDs) are widely consumed in relation to pain and injuries in skeletal muscle, but may adversely affect muscle adaptation probably via inhibition of prostaglandin synthesis. Induction of heat shock proteins (HSP) represents an important adaptive response in muscle subjected to stress, and in several cell types including cardiac myocytes prostaglandins are important in induction of the HSP response. This study aimed to determine the influence of NSAIDs on the HSP response to eccentric exercise in human skeletal muscle. Healthy males performed 200 maximal eccentric contractions with each leg with intramuscular infusion of the NSAID indomethacin or placebo. Biopsies were obtained from m. vastus lateralis before and after (5, 28 hrs and 8 days) the exercise bout from both legs (NSAID vs unblocked leg) and analysed for expression of the HSPs HSP70, HSP27 and alpha B-crystallin (mRNA and protein). NSAID did not affect the mRNA expression of any of the HSPs. Compared to pre values, the mRNA expression of all HSPs was increased; alpha B-crystallin, 3.6- and 5.4-fold; HSP70, 26- and 3.4-fold; and HSP27: 4.8- and 6.5-fold at 5 and 28 hrs post-exercise, respectively (all p < 0.008). Immunohistochemical stainings for alpha B-crystallin and HSP70 revealed increased staining in some samples but with no differences between legs. Changes in force-generating capacity correlated with both alpha B-crystallin and HSP70 mRNA and immunohistochemisty data. Increased expression of HSPs was observed on mRNA and protein level following eccentric exercise; however, this response was unaffected by local intramuscular infusion of NSAIDs.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available