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  • Title: Enzymological studies on hereditary avian muscular dystrophy.
    Author: Patnode R, Bartle E, Hill EJ, LeQuire V, Park JH.
    Journal: J Biol Chem; 1976 Jul 25; 251(14):4468-75. PubMed ID: 180027.
    Abstract:
    White and red muscles of normal and genetically dystrophic chickens were compared with regards to activity levels of three soluble enzymes, glyceraldehyde-3-phosphate dehydrogenase, creatine phosphokinase, and acetyl phosphatase. In dystrophic white muscle (pectoral), activity of the two sulfhydryl enzymes, glyceraldehyde-3-phosphate dehydrogenase and creatine phosphokinase, was preferentially lost from the sarcoplasm resulting in decreased specific activities. By contrast, acetyl phosphatase was preferentially retained and showed increased specific activity. Dystrophic white muscle had decreased sulfhydryl content in the soluble proteins, severe reduction in muscle mass, fatty infiltration, and fragmentation of fibers. Red dystrophic muscles (thigh) were minimally involved in accordance with the known sparing of red fibers. Enzyme activities were correlated with histological observations. The results suggested that the disease process in dystrophic white muscle may be related to alterations in the sulfhydryl groups of proteins. The data are correlated with the beneficial effects of our treatment of hereditary avian dystrophy with the sulfhydryl compound, penicillamine (Chou, T.H., Hill, E.J., Bartle, E., Woolley, K., LeQuire, V., Olson, W., Roelofs, R., and Park, J.H. (1975) J. Clin. Invest. 56, 842-849).
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