Glucocorticoids are growth-inhibiting steroids. They have been reported to reduce
muscle growth by reducing protein synthesis. However, their actions on muscle protein
degradation remain equivocal. Glucocorticoids have been reported to transiently increase
muscle protein degradation, to not affect this process and to reduce muscle protein
degradation. Reasons for these conflicting...
Objectives of this study were to examine effects of age, castration and gestation on
actvities of calpains and calpastatin in skeletal muscle. Also, the regulation of calpains
and calpastatin at the molecular level was investigated. Two experiments were designed.
Experiment 1 was designed to evaluate effects of age and castration...
The first goal of this study was to evaluate the roles of different intracellular
proteolytic systems in accelerated skeletal muscle protein degradation. Total,
myofibrillar and non-myofibrillar proteolysis were determined in cultured L8/CID
muscle cells. Calpain proteolysis was assessed by over-expressed calpastatin inhibitory
domain (CD). Lysosomal proteolysis was determined in the...