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PubMed1986

Generation of drug metabolite antigenicity in the intestinal mucosa.

Both nitroreductase and transglutaminase activities have been assayed in the 10,000 X g supernatant fluids of rat intestine homogenates after Triton X-100 treatment. Incubation of 14C-nitrofurantoin in the intestine extract yielded protein-bound 14C-labeled products. Injection into rabbits of the conjugated protein similarly prepared with unlabeled nitrofurantoin elicited formation of antibodies against nitrofurantoin. These results suggest that intestinal metabolism and conjugation to protein of orally administered drugs may serve as a probable mechanism of drug allergy, and this may be accomplished by enzymatic coupling of relatively stable drug metabolites to protein carriers.

Animals↗
PubMedDate not supplied

[Biopsy examinations of small intestinal mucosa in malabsorption syndrome of childhood].

The results of bioptic mucosal specimens examination are discussed. Samples of the small intestine were collected from 211 children with malabsorption syndrome of various etiology such as cow milk protein intolerance, gluten intolerance, spontaneous diarrhoea and other. The results obtained with microscopic examination scored with Shmerling scale were compared with those of light microscopic examination of histological preparations. The difficulties connected with proper sampling and handling of the bioptic specimen are discussed. Technical errors very often are the cause of the diagnostic failure.

Biopsy↗