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Xenobiotica
the fate of foreign compounds in biological systems
Volume 21, 1991 - Issue 1
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Original Article

In situ intestinal absorption of 2-chloro-N-isopropylacetanilide (propachlor) and non-biliary excretion of metabolites into the intestinal tract of rats, pigs and chickens

Pages 85-95 | Received 14 Feb 1990, Accepted 14 Jul 1990, Published online: 27 Aug 2009
 

Abstract

1. Propachlor was absorbed from in situ intestinal loops of rats and pigs, with absorption half-times of 7.5 and 16.5 min, respectively.

2. Water-soluble 14C-labelled metabolites that accumulated in the intestinal loops accounted for 31%, 53%, and 25% of the starting 14C for rats, pigs and chickens, respectively.

3. Propachlor(S)cysteine was identified as the major metabolite in the pig intestinal lumen (43% of the water-soluble 14C).

4. It is concluded that intestinal metabolism and intestinal excretion of water-soluble metabolites of propachlor are important physiological processes that occur in a variety of animal species. These processes provide a route by which metabolites of xenobiotics may reach the intestinal lumen in animals which are poor biliary excretors.

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