Skeletal Muscle Adaptations to Prolonged Exposure to Extreme Altitude: A Role of Physical Activity?

2008 ◽  
Vol 9 (4) ◽  
pp. 311-317 ◽  
Author(s):  
Masao Mizuno ◽  
Gabrielle K Savard ◽  
Nils-Holger Areskog ◽  
Carsten Lundby ◽  
Bengt Saltin
PPAR Research ◽  
2010 ◽  
Vol 2010 ◽  
pp. 1-7 ◽  
Author(s):  
Giulia Uguccioni ◽  
Donna D'souza ◽  
David A. Hood

PPARγcoactivator-1α(PGC-1α) is considered to be a major regulator of mitochondrial biogenesis. Though first discovered in brown adipose tissue, this coactivator has emerged as a coordinator of mitochondrial biogenesis in skeletal muscle via enhanced transcription of many nuclear genes encoding mitochondrial proteins. Stimuli such as exercise provoke the activation of signalling cascades that lead to the induction of PGC-1α. Posttranslational modifications also regulate the function of PGC-1α, with a multitude of upstream molecules targeting the protein to modify its activity and/or expression. Previous research has established a positive correlation between resistance to fatigue and skeletal muscle mitochondrial content. Recently, studies have begun to elucidate the specific role of PGC-1αin exercise-related skeletal muscle adaptations, with several studies identifying it as a dominant regulator of organelle synthesis. This paper will highlight the function, regulation, and expression of PGC-1α, as well as the role of the coactivator during exercise adaptations.


2019 ◽  
Vol 12 (1) ◽  
Author(s):  
Marie-Pier Roussel ◽  
Marika Morin ◽  
Mélina Girardin ◽  
Anne-Marie Fortin ◽  
Mario Leone ◽  
...  

2008 ◽  
Vol 22 (S1) ◽  
Author(s):  
Shane B Kanatous ◽  
Thomas J Hawke ◽  
Stephen J Trumble ◽  
Linnea E Pearson ◽  
Randall W Davis

2001 ◽  
Vol 86 (2) ◽  
pp. 112-118 ◽  
Author(s):  
David Hostler ◽  
Chris Schwirian ◽  
Gerson Campos ◽  
Kumika Toma ◽  
Matthew Crill ◽  
...  

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