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  • 1 Department of Physiology Faculty of Animal Science University of Kaposvár H-7400 Kaposvár, Guba S. u. 40, Hungary
  • 2 Department of Agricultural Chemistry, University of Agriculture Gödöllő, Hungary; present address: Ceva-Phylaxia Co. Ltd., Budapest, Hungary
  • 3 6. Ashley Park North Aberdeen, Scotland, UK
  • 4 6. Ashley Park North Aberdeen, Scotland, UK
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Short-term effects of orally administered plant lectins, with special reference to the Phaseolus vulgaris agglutinin (phytohaemagglutinin, PHA), were studied in growing rats.  The orally administered PHA elicited a dose-dependent accumulation of liquor with elevated pH in the proximal small intestine. Although the concentration of a-amylase activity did not change, total a-amylase activity slightly, but significantly increased in the gut. When a panel of plant lectins with different carbohydrate binding specificities was tested at the dose of 100 mg/kg body weight, most of them stimulated the secretion of liquor, but the total a-amylase activity was increased only by PHA, ConA or WGA.

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