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Veterinary Pathology, Vol 23, Issue 2 125-131, Copyright © 1986 by American College of Veterinary Pathologists

ARTICLES

Enzyme histochemistry of the small intestinal mucosa in experimental infections of calves with rotavirus and enterotoxigenic Escherichia coli

M. T. Stiglmair-Herb, A. Pospischil, R. G. Hess, P. A. Bachmann and G. Baljer

The effect of rotavirus and enterotoxigenic Escherichia coli, administered in different sequences, on alkaline and acid phosphatase, leucinaminopeptidase, beta-galactosidase, and succinicdehydrogenase of the intestinal mucosa of cesarian-derived, colostrum-deprived calves was investigated. Decrease in enzyme activity was most prominent in dual infections; it also occurred in parts of the small intestine in monoinfected animals. Increases in enzyme activity involved totally either one or all tissue compartments (crypt, basal villus area, villus tips). Increased activity was present in enteric mucosae that were either not affected or were only slightly affected by rotavirus or enterotoxigenic E. coli. We interpret the increase in enzyme activity as an adaptation of the enteric mucosa to maintain the absorptive function.




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Copyright © 1986 by the American College of Veterinary Pathologists.