Document Detail

Increase in interstitial interleukin-6 of human skeletal muscle with repetitive low-force exercise.
MedLine Citation:
PMID:  15448117     Owner:  NLM     Status:  MEDLINE    
Interleukin (IL)-6, which is released from muscle tissue during intense exercise, possesses important metabolic and probably anti-inflammatory properties. To evaluate the IL-6 response to low-intensity exercise, we conducted two studies: 1) a control study with insertion of microdialysis catheters in muscle and determination of interstitial muscle IL-6 response over 2 h of rest and 2) an exercise study to investigate the IL-6 response to 20 min of repetitive low-force exercise. In both studies, a microdialysis catheter (cutoff: 3,000 kDa) was inserted into the upper trapezius muscle of six male subjects, and the catheters were perfused with Ringer-acetate at 5 microl/min. Venous plasma samples were taken in the exercise study. The insertion of microdialysis catheters into muscle resulted in an increase in IL-6 from 8 +/- 0 to 359 +/- 171 and 484 +/- 202 pg/ml after 65 and 110 min, respectively (P < 0.001). Similarly, in the exercise study, IL-6 increased to 289 +/- 128 pg/ml after a 55-min rest (P < 0.001). During the subsequent repetitive low-force exercise, muscle IL-6 further increased to 1,246 +/- 461 pg/ml and reached 2,132 +/- 477 pg/ml after a 30-min recovery (all P < 0.001). In contrast to this, plasma IL-6 did not significantly change in response to exercise. We conclude that upper extremity, low-intensity exercise results in a substantial increase in IL-6 in the interstitium of the stabilizing trapezius muscle, whereas no change is seen for plasma IL-6.
Lars Rosendal; Karen Søgaard; Michael Kjaer; Gisela Sjøgaard; Henning Langberg; Jesper Kristiansen
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Publication Detail:
Type:  Clinical Trial; Controlled Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't     Date:  2004-09-24
Journal Detail:
Title:  Journal of applied physiology (Bethesda, Md. : 1985)     Volume:  98     ISSN:  8750-7587     ISO Abbreviation:  J. Appl. Physiol.     Publication Date:  2005 Feb 
Date Detail:
Created Date:  2005-01-14     Completed Date:  2005-05-24     Revised Date:  2013-09-26    
Medline Journal Info:
Nlm Unique ID:  8502536     Medline TA:  J Appl Physiol (1985)     Country:  United States    
Other Details:
Languages:  eng     Pagination:  477-81     Citation Subset:  IM    
National Institute of Occupational Health, Lersø Parkallé 105, DK-2100 Copenhagen, Denmark.
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MeSH Terms
Interleukin-6 / blood*,  physiology*
Muscle Contraction / physiology*
Muscle, Skeletal / physiology*
Physical Exertion / physiology*
Stress, Mechanical
Reg. No./Substance:

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