[Protein turnover during and after extended space flight]

Stein, T. P.; Larina, I. M.; Leskiv, M. J.; Schluter, M. D.

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NASA NTRS · 20040141438

[Protein turnover during and after extended space flight]

Stein, T. P.·Larina, I. M.·Leskiv, M. J.·Schluter, M. D.

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Abstract

A 15N-glycine tracer technique was used to study protein turnover in four Russian cosmonauts and two U.S. astronauts who had spent long time aboard the Russian orbital station MIR. As was shown, in space flight protein synthesis falls by 46% on the average, which substantially exceeds estimations made on the basis of data about bed-rested human subjects. Reduction in protein synthesis during space flight is connected with the negative energy balance; therefore, it appears imperative to keep balance between energy intake (foodstuffs) and expenditure by cosmonauts on long-term mission.

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manned long duration Flight Experiment Mir Project NASA Experiment Number 9401613 Non-NASA Center NASA Discipline Regulatory Physiology Energy Metabolism/physiology Space Flight Proteins/biosynthesis Circadian Rhythm/physiology English Abstract Comparative Study Human Weightlessness Occupational Exposure Time Factors

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Stein, T. P., Larina, I. M., Leskiv, M. J., Schluter, M. D.. 2000-01-01. [Protein turnover during and after extended space flight]. https://ntrs.nasa.gov/citations/20040141438

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