The effects of mefenamic acid on postprandial intestinal carbohydrate metabolism.
The effects of mefenamic acid on the food-induced changes in intestinal carbohydrate metabolism were determined in an attempt to elucidate the mechanism(s) by which inhibition of prostaglandin synthesis enhances the postprandial increases in intestinal blood flow and oxygen consumption. The data show that when the luminal perfusate was changed from saline to a nutrient/bile solution, there was an increase in carbohydrate utilization, which was offset by absorption of glucose from the lumen. Intravenous administration of mefenamic acid significantly increased both carbohydrate absorption and metabolism when food was placed in the lumen. Changes in carbohydrate absorption and metabolism have been shown to play and important role in determining the magnitude of glucose induced changes in intestinal blood flow and oxygen consumption. Therefore, it is possible that the ability of mefenamic acid to enhance significantly the food-induced increases in blood flow and oxygen consumption may be due in part to its effects on intestinal carbohydrate absorption and utilization.
D000804:Angiotensin II / Q000494:pharmacology; D000818:Animals; D001646:Bile / Q000502:physiology; D001783:Blood Flow Velocity / Q000187:drug effects; D050260:Carbohydrate Metabolism; D002245:Carbon Dioxide / Q000097:blood; D004285:Dogs; D004435:Eating; D005260:Female; D005947:Glucose / Q000378:metabolism; D007262:Infusions, Intravenous; D007408:Intestinal Absorption / Q000187:drug effects; D007583:Jejunum / Q000098:blood supply / Q000187:drug effects / Q000378:metabolism*; D008297:Male; D008528:Mefenamic Acid / Q000008:administration & dosage / Q000494:pharmacology*; D010100:Oxygen / Q000097:blood; D012965:Sodium Chloride / Q000502:physiology; D013997:Time Factors
D000804:Angiotensin II; D002245:Carbon Dioxide; D008528:Mefenamic Acid; D012965:Sodium Chloride; D005947:Glucose; D010100:Oxygen