The effect of ketone bodies and fatty acid on intestinal glucose metabolism during development.
Glucose oxidation by developing rat intestine changed dramatically during the period of suckling and weaning. After weaning, glucose oxidation to CO2 by intestinal slices increased over 3-fold This was associated with an increase in lactate production from glucose and an increase in the rate of pyruvate decarboxylation. Active pyruvate dehydrogenase in intestine of developing rats also increases in activity at the time of weaning, suggesting that the suppression of glucose oxidation during the suckling period is controlled by pyruvate dehydrogenase. Glucose oxidation to CO2 and pyruvate decarboxylation to CO2 by intestinal slices of postweaned animals was inhibited by exogenous 3-hydroxybutyrate. But exogenous 3-hydroxybutyrate did not inhibit glucose and pyruvate oxidation in intestine of suckling animals which have higher levels of endogenous 3-hydroxybutyrate than intestine of postweaned rats. Palmitate, in contrast, inhibited glucose and pyruvate oxidation by both pre- and postweaned intestine.
D020155:3-Hydroxybutyric Acid; D000828:Animal Population Groups / Q000378:metabolism*; D000818:Animals; D000833:Animals, Suckling / Q000378:metabolism*; D005227:Fatty Acids / Q000494:pharmacology*; D005260:Female; D005947:Glucose / Q000378:metabolism*; D006885:Hydroxybutyrates / Q000494:pharmacology; D007413:Intestinal Mucosa / Q000378:metabolism*; D007657:Ketone Bodies / Q000494:pharmacology*; D007773:Lactates / Q000378:metabolism; D019344:Lactic Acid; D008297:Male; D009243:NAD / Q000378:metabolism; D010084:Oxidation-Reduction; D019308:Palmitic Acid; D010169:Palmitic Acids / Q000494:pharmacology; D011768:Pyruvate Dehydrogenase Complex / Q000378:metabolism; D011773:Pyruvates / Q000378:metabolism; D019289:Pyruvic Acid; D051381:Rats
D005227:Fatty Acids; D006885:Hydroxybutyrates; D007657:Ketone Bodies; D007773:Lactates; D010169:Palmitic Acids; D011768:Pyruvate Dehydrogenase Complex; D011773:Pyruvates; D009243:NAD; D019308:Palmitic Acid; D019344:Lactic Acid; D019289:Pyruvic Acid; D005947:Glucose; D020155:3-Hydroxybutyric Acid