Host-parasite interactions in rodent nematode infections.
In rodents, Trichinella spiralis and Nippostrongylus brasiliensis infect the small intestine and Trichuris muris resides in the colon. The intestinal host response in these animals is characterized by changes in mucosal architecture and inflammation and is associated with worm expulsion. The requirement of T cell-mediated host response in worm expulsion has been demonstrated over many years. Subsequent studies have shown that Th2-type, but not Th1-type, responses mediate resistance to the nematodes. Investigations using neutralizing antibodies and genetically manipulated mice have characterized the contribution of individual Th2-type cytokines in not only worm expulsion, but also specific cellular changes that occur in the mucosa, such as alterations in epithelial phenotype and smooth muscle. There is also increasing appreciation of the contribution of non-bone marrow-derived cells in innate and adaptive host responses in these models.
Mahida
Y R
YR
Division of Gastroenterology, University Hospital, Queen's Medical Centre, Nottingham NG7 2UH, UK. yash.mahida@nottingham.ac.uk
D000818:Animals; D003106:Colon / Q000276:immunology / Q000469:parasitology / Q000503:physiopathology; D016207:Cytokines / Q000276:immunology; D004847:Epithelial Cells / Q000276:immunology; D006790:Host-Parasite Interactions; D007421:Intestine, Small / Q000276:immunology / Q000469:parasitology / Q000503:physiopathology; D008407:Mast Cells / Q000276:immunology; D009119:Muscle Contraction; D009130:Muscle, Smooth / Q000503:physiopathology; D009348:Nematoda / Q000502:physiology*; D009349:Nematode Infections / Q000276:immunology / Q000469:parasitology*; D051381:Rats; D012377:Rodentia / Q000276:immunology / Q000469:parasitology*; D013601:T-Lymphocytes / Q000276:immunology
D016207:Cytokines