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. 1975 Aug;150(2):145–152. doi: 10.1042/bj1500145

Interactions of glucose, acetoacetate and insulin in mammary-gland slices of lactating rats.

D H Williamson, S R McKeown, V Ilic
PMCID: PMC1165720  PMID: 1180913

Abstract

1. Utilization of 5mM-glucose by slices of lactating mammary gland was decreased 33% on addition of acetoacetate (2mM) to the incubation medium. This inhibition was accompanied by increases in the intracellular concentrations of citrate and glucose 6-phosphate. 2. In the presence of acetoacetates the accumulation of pyruvate in the medium approximately doubled. 3. Insulin completely reversed the inhibitory effect of acetoacetates on glucose utilization, without altering the amount of acetoacetate removed or pyruvate formed. 4. Similar results were obtained with mammary-gland slices from diabetic rats, except that insulin did not completely reverse the effects of acetoacetates. 5. Acetoacetate inhibited the formation of 14CO2 from [1-14C]pyruvate; this effect was not overcome by insulin. 6. Insulin increased the proportion of [3-14C]acetoacetate that was converted into lipid and decreased that oxidized to CO2.7. The physiological significance of these findings is discussed.

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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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