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1.
GED gastroenterol. endosc. dig ; 20(3): 65-70, maio-jun. 2001. ilus, graf
Article in Portuguese | LILACS | ID: lil-303449

ABSTRACT

Foram estudados fragmentos da mucosa duodenal obtidos de nove pacientes apresentando sintomas leves de estrogiloidiase, nove com sintomas moderados, sete com sintomas graves e sete indivíduos aparentemente normais. A muramidase(lisozima) foi imunocitoquimicamente demonstrada em cortes contracorados pela técnica do PAS. Havia aparente aumento progressivo na secreçao de muramidase pela célula de Paneth aaacompanhado o agravamento dos sintomas, näo obstante o fato de que a sua populaçao permanecesse constante. Decréscimo progressivo no número de células caliciformes foi observado enquanto, concomitantemente, haavia aumento na populaçao de células intermediarias. Esses resultados foram interpretados como a indicaçao da participaçao do sistema imune inato intestinal no estabelecimento da interaçao Strongyloides stercoralis/hospedeiro, através do aumento da secreçao da enzima mucolítica muramidase


Subject(s)
Humans , Male , Female , Adult , Cell Count , Strongyloidiasis/physiopathology , Goblet Cells , Immune System , Paneth Cells , Strongyloides
3.
Mem. Inst. Oswaldo Cruz ; 85(4): 435-43, Oct.-Dec. 1990. ilus
Article in English | LILACS | ID: lil-127781

ABSTRACT

Differing from the studied Eutheria the white belly opossum Peyer"s patches do not present a conspicous dome. M cells are located in the inmer layer of bilaminal invaginations formed at the bottom of the villi. A great variation in the morphology of M cells was observed. The enterocytes located at the epithelial inner layer may present endocytic vesicles, and the microvilli are shorter tha the microvilli of enterocytes lining the small intestine. As these morphological aspects have been described to exist in the enterocytes of the lancet opossum small intstine it was surmised that the opossum Peyer's patches special epithelium could represent the persistence in adult animals of a cellular pattern established before the intestinal maturation had occurred


Subject(s)
Animals , Opossums/anatomy & histology , Lymphocytes/ultrastructure , Peyer's Patches/ultrastructure , Epithelium/cytology , Microscopy, Electron
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