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Strongyloides venezuelensis: longitudinal distribution of adult worms in the host intestine is influenced by mucosal sulfated carbohydrates

Authors :
Fukumi Nakamura-Uchiyama
Tadashi Itagaki
Shoichi Shimada
Mikiko Aoki
Haruhiko Maruyama
Nobuo Ohta
Yoshifumi Hirabayashi
Yukifumi Nawa
Sou Okamura
Mohamed El-Malky
Source :
Experimental parasitology. 100(3)
Publication Year :
2002

Abstract

Mechanisms for the longitudinal distribution of parasitic females of Strongyloides venezuelensis in the host intestine were investigated in mice. Adult worms were mostly recovered from the anterior-most one-third of the small intestine throughout the infection after infective larvae inoculation. Surgically implanted adult worms established well in the small intestinal mucosa, either in the duodenum or in the ileum, whereas a few worms could establish in the large intestine. Implanted worms in the small intestine remained where they were implanted until expelled. Mucosal mast cells were induced in the whole small intestine after the worm implantation. In the large intestine, a considerable number of adult worms settled in the mucosa of mutant mice, whose goblet cell mucins were undersulfated because of a mutation in sulfate-activating enzymes. In these mice, the degree of sulfation of goblet cell mucins in the large intestine was significantly reduced to the level of normal small intestine goblet cell mucins. Our results suggest that sulfated glycoconjugates, either from mucosal mast cells or goblet cells, have important effects on the longitudinal distribution of parasitic females of S. venezuelensis . Index Descriptors and Abbreviations: Strongyloides venezuelensis ; Nematode; Tissue specificity; Goblet cell; Mucin; Mast cell; Sulfated carbohydrate; PBS, phosphate buffered saline.

Details

ISSN :
00144894
Volume :
100
Issue :
3
Database :
OpenAIRE
Journal :
Experimental parasitology
Accession number :
edsair.doi.dedup.....48d6176a54768de5cef4fc7914b15e80