Physiological roles of muscle-derived interleukin-6 in response to exercise.
Level 5 - mechanism / opinion, no new human data
Narrative review of physiological mechanisms and metabolic effects without systematic search methodology.
PubMed 17414493 · doi:10.1097/MCO.0b013e3280ebb5b3
What was done
Narrative review synthesizing findings regarding the regulation of muscle-derived interleukin-6 transcription and release, as well as its physiological and metabolic roles during exercise.
What was found
The abstract reports no numerical data. Contraction-induced interleukin-6 transcription and release are driven by exercise-induced changes in calcium homeostasis, impaired glucose availability, and increased reactive oxygen species. Acute interleukin-6 administration in humans increases lipolysis, fat oxidation, and insulin-mediated glucose disposal, with AMP-activated protein kinase activation playing a key role. Interleukin-6 also facilitates an anti-inflammatory environment, potentially through the inhibition of tumor necrosis factor-alpha.
Why it matters
The paper supports the paradigm of skeletal muscle as an endocrine organ that releases myokines to coordinate systemic metabolic and immunological adaptations to exercise.
Limits
This is a narrative review lacking systematic search methods, risk of bias assessment, or quantitative data synthesis. The abstract presents no numerical effect sizes, sample sizes, or population details.
Cited by
- supports IL-6 acts on adipose tissue to stimulate lipolysis and on the liver to stimulate glucose production.