Characteristic of changes in the structure and metabolism of the vastus lateralis muscles in monkeys after space flight.
Monkeys subjected to space flight were found to have significant decreases in the sizes of slow and rapid fibers in the vastus lateralis muscle, due not only to weightlessness but also, to some extent, to restriction of movement activity within the capsule. The quantity of total protein in muscle fibers did not decrease. The respiratory peak in the pool of vastus lateralis muscle fibers decreased after space flight, as did the activity of oxidative enzymes (particularly in rapid fibers of the vastus lateralis muscle).
Belozerova
I N
IN
State Scientific Center, Russian Federation Institute of Medical Biological Problems, Russian Academy of Sciences, 76a Khorosheevskoe Chaussee, 123007 Moscow, Russia.
Nemirovskaya
T L
TL
Shenkman
B S
BS
Kozlovskaya
I B
IB
D000818:Animals; D007866:Leg / Q000502:physiology; D008253:Macaca mulatta; D018656:Muscle Fibers, Fast-Twitch / Q000378:metabolism / Q000473:pathology*; D018657:Muscle Fibers, Slow-Twitch / Q000378:metabolism / Q000473:pathology*; D018482:Muscle, Skeletal / Q000033:anatomy & histology* / Q000378:metabolism*; D012149:Restraint, Physical; D013026:Space Flight; D013385:Succinate Dehydrogenase / Q000378:metabolism; D014893:Weightlessness; D018474:Weightlessness Simulation
D013385:Succinate Dehydrogenase