Effect of Fasting on Muscle Proteins and Fat in Young Rats of Different Ages
- 31 December 1956
- journal article
- research article
- Published by American Physiological Society in American Journal of Physiology-Legacy Content
- Vol. 188 (1) , 91-94
- https://doi.org/10.1152/ajplegacy.1956.188.1.91
Abstract
Rats 30–70 days of age were fasted for 3 or more days and changes in the amounts of various protein fractions and fat were measured in the thigh muscle. Only two protein fractions in the muscle, myosin and ‘water-soluble’ (sarcoplasmic) proteins, were decreased; the stroma and nonprotein nitrogen fractions were unchanged. It was found that only 20–27% of the calories that came from the thigh muscle were derived from protein and the rest, from fat. These findings are in agreement with many other reports that during fasting body proteins contribute only a small proportion of the calories that are needed for survival. There was no evidence of edema or ‘water-logging’ in the muscle of these fasting animals.Keywords
This publication has 2 references indexed in Scilit:
- Effect of Testosterone Propionate on Myosin, Collagen and Other Protein Fractions in Striated Muscles of Gonadectomized Male Guinea PigsAmerican Journal of Physiology-Legacy Content, 1954
- Changes in the extracellular and intracellular fluid phases of muscle during starvation and dehydration in adult ratsBiochemical Journal, 1949