Abstract
Changes in the quality of mucins in jejunal goblet cells were investigated during an infection with Nippostrongylus brasiliensis in rats. At 10 days after infection, when proliferative activity in the crypts is excessive and both crypts and villi are characterized by hyperplasia of goblet cells, the histochemical composition of the population of goblet cells in comparison with controls shows a marked increase in crypt and villous goblet cells containing neutral mucins. At 15 days after infection both crypts and villi display a significant increase in goblet cells containing acid mucin and decrease in goblet cells containing neutral mucin. The acid mucins in crypt and villous goblet cells on day 15 appear to be sulphomucins predominantly, whereas in controls sialomucin-containing goblet cells dominate both in the crypts and on the villi. These experiments establish that the explusion of N. brasiliensis from the intestine of the rat coincides not only with quantitative, but also with remarkable qualitative changes in the histochemical composition of mucins in goblet Cells.
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