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. 1975 Sep;150(3):405–411. doi: 10.1042/bj1500405

Stimulation of protein synthesis in cultured heart muscle cells by glucose.

M David, Y Avi-Dor
PMCID: PMC1165755  PMID: 1212199

Abstract

Glucose stimulated the rate of incorporation of [3H]leucine into HCLO4-insoluble fraction of cultured rat heart muscle cells under both aerobic and anaerobic conditions. In the aerobic system the incorporation proceeded at a constant rate during 3h of incubation with and without glucose whereas in the anaeorbic system the incorporation ceased after approx. 60 min and could be renewed only by the addition of glucose. No correlation was found to exist between the above effect of glucose on protein synthesis and glucose-dependent changes in the intracellular ATP concentration. The extent of the stimulation of protein synthesis was related to the concentration of glucose. The effect of glucose was suppressed by cycloheximide but was not affected by actinomycin D. Glucose had no effect on the rate of transport of alpha-aminoisobutyric acid. Mannose also stimulated [3H]leucine incorporation. Substances that did not produce lactate were ineffective. Iodoacetate inhibited the stimulatory effect of glucose, but pyruvate, which by itself had no apprecialbe stimulatory action, relieved the inhibition induced by iodoacetate. There was no concomitant change in the concentration of ATP when iodoacetate inhibition was reversed by pyruvate. L-Lactate or other intermediates of energy metabolism could not relieve the inhibitory effect of iodoacetate.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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