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Nagpaul, J.P. et al.

Effect of various doses of medroxyprogesterone acetate on intestinal functions in rats.

The dose relationship between medroxyprogesterone acetate (MPA), a long acting contraceptive, and rat intestinal digestive and absorptive functions has been investigated. The study revealed that the activities of brush border sucrase, lactase and leucine aminopeptidase were stimulated only at high doses, viz 70 mg/kg (180 mumol/kg) body weight and above, whereas the activity of alkaline phosphate was depressed at comparatively low dose (17.5 mg/kg; 45 mumol/kg body weight). This decrease was found to be significant (p less than 0.001) at all the doses tested. The inhibition in the intestinal uptake of calcium paralleled the decrease in alkaline phosphatase activity. Relatively high amount of MPA (140 mg/kg; 360 mumol/kg) was required to augment the uptake of glucose and amino acid. The results obtained do not indicate a close relationship between the dose of the drug and the extent of alteration in the rat intestinal digestive and absorptive functions. The study appears to confirm the association between brush border enzymes activities and uptake of nutrients in rat intestine.[1]

References

Effect of various doses of medroxyprogesterone acetate on intestinal functions in rats. Nagpaul, J.P., Kaushal, M., Majumdar, S., Mahmood, A. Indian journal of gastroenterology : official journal of the Indian Society of Gastroenterology. (1990) [Pubmed]

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