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Pyruvate dehydrogenase activities during the fed-to-starved transition and on re-feeding after acute or prolonged starvation.

ABSTRACT: We investigated the temporal relationship between hepatic glycogen depletion and cardiac and hepatic PDH (pyruvate dehydrogenase complex) activities during the acute phase of starvation. There was a striking correlation between the decline in hepatic glycogen and PDH inactivation during the first 10 h of starvation. Re-feeding after 6 h starvation was associated with complete re-activation of PDH in liver and re-activation to approx. 75% of the fed value in heart, whereas in rats previously starved for 24-48 h re-activation was delayed in liver and diminished in heart. The results are discussed with reference to the fate of dietary carbohydrate after re-feeding.

SUBMITTER: Holness MJ

PROVIDER: S-EPMC1138393 | biostudies-other | 1989 Mar

REPOSITORIES: biostudies-other

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