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The Effects of Starvation on Functional Properties of the Myocardium

경희의대논문집 1976년 1권 1호 p.9 ~ 14
고계창,
소속 상세정보
고계창 ( Ko Kye-Chang ) - Kyung Hee University School of Medicine Department of Pharmacology

Abstract


Starvation results in a marked loss of body wight in rats, e.g. a 30% loss in 4 days after which the animals begin to die. By the sixth
day only 5 of 20 were still living. Despite these drastic effects on the rat as a whole, cardiac function, as determined by developed tension of isolated atria in glucose-containing medium, was as good or better than that from fed rats. When placed in substrate-free medium atria from fed rats showed a marked decline in developed tension e.g., a 44% decline in 40 minutes. In contrast, the developed tension of atria from rats starved 1 to six days showed a smaller rate of decline with the least decline seen in atria from rats starved for 2 days. These results suggest (a) that prolonged starvation has no deleterious effect on cardiac function and, (b) starvation increases the storage of readily metabolizable substrate useful for the functional activity of the atria.

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