IGF-IEc expression, regulation and biological function in different tissues.
Level 5 - mechanism / opinion, no new human data
Narrative review of bench and animal studies with no human clinical trial data.
PubMed 20494600 · doi:10.1016/j.ghir.2010.03.005
What was done
This is a narrative review synthesizing literature on the expression, regulation, and biological functions of insulin-like growth factor I splice variant IGF-IEc (mechano-growth factor, or MGF) across various tissues in physiological and injury states, including animal model findings.
What was found
The abstract reports no numerical data. It summarizes qualitatively that MGF expression increases following mechanical damage in muscle, bone, and tendon, and following ischemic injury in the brain and heart. In experimental models, MGF activates muscle satellite cells to promote hypertrophy and regeneration and provides neuroprotection during brain ischemia.
Why it matters
The review outlines the role of MGF (IGF-IEc) as a localized, damage-responsive repair factor distinct from systemic IGF-I signaling, highlighting its potential relevance for conditions like muscular dystrophy and cerebral hypoxia-ischemia.
Limits
This is an unsystematic narrative review summarizing bench and animal research without human clinical trial data. No quantitative effect estimates or study counts are provided in the abstract, and the functional mechanisms remain incompletely understood.
Cited by
- supports Mechano-growth factor (MGF) is a splice variant of insulin-like growth factor 1 (IGF-1) involved in muscle growth regulation.