Abstract
Intestinal toxicity exerted by indomethacin wascompared to that induced by copperindomethacinate, freeor associated to zwitterionic phospholipids. A singlehigh dose of indomethacin (15 or 20 mg/kg), copper-indomethacinate (15 or 20 mg/kg), orcopperindomethacinate liposomes or nanocapsules (15mg/kg) was orally administered. Then 24 hr laterjejunoileal tissue was taken for macroscopicobservation, ex vivo nitrite production, and determinationof myeloperoxydase and iNOS activities. Antiinflammatoryactivity of the drugs was investigated using thecarrageenan-induced paw edema model. Indomethacin induced penetrating ulcerations of theintestine that were maximal at hour 24.Copperindomethacinate induced significantly lessulceration than indomethacin with no significantdifference in MPO and iNOS activities. The injurious action ofindomethacin on the small intestine was further reducedwhen copper-indomethacinate was administered as thephospholipid-associated state while similaranti-inflammatory action was observed on rat paw edema. Theantiulcerogen effect of copper-indomethacinate seems tobe linked to its free radical scavenging effect withoutany modification of nitric oxide release.
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Bertrand, V., Guessous, F., Roy, AL.L. et al. Copper-Indomethacinate Associated with Zwitterionic Phospholipids Prevents Enteropathy in Rats (Effect on Inducible NO Synthase). Dig Dis Sci 44, 991–999 (1999). https://doi.org/10.1023/A:1026668816189
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DOI: https://doi.org/10.1023/A:1026668816189