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- Title
Mucosal mast cell responses are not required for protection against infection with the murine nematode parasite Trichuris muris.
- Authors
Koyama, Koichi; Ito, Yoichi
- Abstract
The involvement of mucosal mast cells (MMC) in protection against infection with the murine nematode parasite Trichuris muris was studied in genetically mast cell-deficient WBB6F1-W/Wv mice and their normal littermates WBB6F1-+/+ mice. Expulsion of T. muris worms occurred in infected +/+ mice, whereas no worm expulsion was observed in infected W/Wv mice where the infection persisted until at least day 46 postinfection. No MMC responses were induced in either infected W/Wv or +/+ mice. Specific IgG1and IgG2a antibodies to T. muris excretory/secretory antigens were observed in infected W/Wv and +/+ mice, and antibody production showed similar kinetics. Interleukin 4 production by concanavalin A (Con A)-stimulated mesenteric lymph node cells (MLNC) was induced preferentially in infected +/+ mice. T. muris infection increased the levels of IFN-γ produced by Con A-stimulated MLNC of infected W/Wv and +/+ mice, with the levels of IFN-γ in infected W/Wv mice being higher than those in infected +/+ mice. Taken together, these results indicate that W/Wv and +/+ mice are susceptible and resistant to T. muris infection, respectively, and that MMC responses are not required for protective immunity.
- Subjects
MAST cells; TRICHURIASIS; NEMATODES
- Publication
Parasite Immunology, 2000, Vol 22, Issue 1, p21
- ISSN
0141-9838
- Publication type
Article
- DOI
10.1046/j.1365-3024.2000.00270.x