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  • Title: Connective tissue metabolism in muscular dystrophy. Levels of collagen and mucopolysaccharides in embryonic chickens with genetic muscular dystrophy.
    Author: DeMichele SJ, Brown RG.
    Journal: Comp Biochem Physiol B; 1984; 79(2):203-9. PubMed ID: 6239744.
    Abstract:
    There were marked differences between the levels of collagen (measured as hydroxyproline) and mucopolysaccharides (measured as hexosamine) found in embryonic chicks with genetic muscular dystrophy and their normal controls. The chief differences were that the dystrophic tissues (gastrocnemius muscle and tendon, pectoralis major and skin) had: (a) greater amounts of hexosamine early in embryonic development; (b) hydroxyproline levels that rose at a faster rate, yielding different slopes than their normal controls; (c) relatively greater amounts of hydroxyproline than hexosamine later in embryonic life (day 20). Connective tissue systems in muscles were preferentially affected. The connective tissue system associated with dystrophic tissues appeared to lag behind the normal rhythm pattern of embryological development. The changes in connective tissue metabolism observed in dystrophic chicks suggested that the collagen from dystrophic embryonic chicks may be of a different structure or composition than that found in the normals.
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