A Pilot Study Investigating the Impact of High Altitude on Myostatin and Irisin Levels
Abstract
Many people visit and stay at high altitude due to adventure or occupation. The high-altitude environment comprises many factors alien to sea residents and detrimental to physical and mental health. Myokines are peptides and cytokines secreted from muscles and have a prime role in regulating skeletal muscle growth and myo-degradation. Therefore, the present study investigated the function of myokines in regulating muscle mass during acute and chronic high-altitude exposure. The study was conducted on Indian healthy subjects (n=29) who were distributed into three groups: Control (sea level (SL; n=15), acute high altitude stayed subjects (stayed at high altitude for less than ten days (AHA; n=7); chronic high altitude stayed subjects (stayed at high altitude for 15 days to 3 months (CHA; n=7). Acute exposure to high altitude leads to an increase in myostatin levels, indicating enhanced myo-degradation. Irisin levels were also increased in AHA group compared to SL group, depicting inclined myogenesis. However, CHA group showed an increase in myostatin levels but a non-significant change in irisin content in relation to SL group, suggesting enhanced myo-degradation. These findings generated a unique role of myokines, including myostatin and irisin, in managing skeletal muscle health with reference to high altitude.
where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India