Effect of Calorie Source on Skeletal Muscle Protein Synthesis and Degradation in Parenterally Fed Rats

1985 ◽  
Vol 68 (s11) ◽  
pp. 73P-73P
Author(s):  
S.A. Ash ◽  
G.E. Griffin
Keyword(s):  
Skeletal Muscle ◽  
Protein Synthesis ◽  
Muscle Protein ◽  
Muscle Protein Synthesis ◽  
Skeletal Muscle Protein ◽  
Skeletal Muscle Protein Synthesis ◽  
Protein Synthesis And Degradation ◽  
Synthesis And Degradation

scholarly journals Skeletal muscle protein synthesis and degradation in patients with chronic renal failure

1994 ◽  
Vol 45 (5) ◽  
pp. 1432-1439 ◽  
Author(s):  
Giacomo Garibotto ◽  
Rodolfo Russo ◽  
Antonella Sofia ◽  
Maria Rita Sala ◽  
Cristina Robaudo ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Renal Failure ◽  
Protein Synthesis ◽  
Chronic Renal Failure ◽  
Muscle Protein ◽  
Muscle Protein Synthesis ◽  
Skeletal Muscle Protein ◽  
Skeletal Muscle Protein Synthesis ◽  
Protein Synthesis And Degradation ◽  
Synthesis And Degradation

mTOR-Dependent Control of Skeletal Muscle Protein Synthesis

2001 ◽  
Vol 11 (s1) ◽  
pp. S177-S185 ◽  
Author(s):  
John C. Lawrence
Keyword(s):  
Protein Synthesis ◽  
Muscle Protein ◽  
Muscle Protein Synthesis ◽  
State Level ◽  
Simple Relationship ◽  
Skeletal Muscle Protein ◽  
Level Of Activity ◽  
Skeletal Muscle Protein Synthesis ◽  
Protein Synthesis And Degradation ◽  
Synthesis And Degradation

Muscle mass is influenced by many factors including genetically programmed changes, hormonal state, level of activity, and disease processes. Ultimately, whether or not a muscle hypertrophies or atrophies is determined by a simple relationship between the rates of protein synthesis and degradation. When synthesis exceeds degradation, the muscle hypertrophies, and vice versa. In contrast to this simple relationship, the processes that control muscle protein synthesis and degradation are complex. Recently, significant progress has been made in understanding the biochemical mechanisms that control the rate of translation initiation, which is generally the limiting phase in protein synthesis.

scholarly journals Resistance exercise maintains skeletal muscle protein synthesis during bed rest

1997 ◽  
Vol 82 (3) ◽  
pp. 807-810 ◽  
Author(s):  
Arny A. Ferrando ◽  
Kevin D. Tipton ◽  
Marcas M. Bamman ◽  
Robert R. Wolfe
Keyword(s):  
Skeletal Muscle ◽  
Protein Synthesis ◽  
Resistance Training ◽  
Resistance Exercise ◽  
Lean Body Mass ◽  
Muscle Protein ◽  
Muscle Protein Synthesis ◽  
Bed Rest ◽  
Skeletal Muscle Protein ◽  
Skeletal Muscle Protein Synthesis

Ferrando, Arny A., Kevin D. Tipton, Marcas M. Bamman, and Robert R. Wolfe. Resistance exercise maintains skeletal muscle protein synthesis during bed rest. J. Appl. Physiol. 82(3): 807–810, 1997.—Spaceflight results in a loss of lean body mass and muscular strength. A ground-based model for microgravity, bed rest, results in a loss of lean body mass due to a decrease in muscle protein synthesis (MPS). Resistance training is suggested as a proposed countermeasure for spaceflight-induced atrophy because it is known to increase both MPS and skeletal muscle strength. We therefore hypothesized that scheduled resistance training throughout bed rest would ameliorate the decrease in MPS. Two groups of healthy volunteers were studied during 14 days of simulated microgravity. One group adhered to strict bed rest (BR; n = 5), whereas a second group engaged in leg resistance exercise every other day throughout bed rest (BREx; n = 6). MPS was determined directly by the incorporation of infusedl-[ ring-13C6]phenylalanine into vastus lateralis protein. After 14 days of bed rest, MPS in the BREx group did not change and was significantly greater than in the BR group. Thus moderate-resistance exercise can counteract the decrease in MPS during bed rest.

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