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Monoclonal IgA antibody-mediated expulsion of Trichinella from the intestine of mice
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Monoclonal IgA antibody-mediated expulsion of Trichinella from the intestine of mice
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Journal Article
Monoclonal IgA antibody-mediated expulsion of Trichinella from the intestine of mice
2003
Overview
To assess the potential role of IgA antibody in expulsion of the nematode of the genus Trichinella from the intestine, a panel of IgA monoclonal antibodies (mAbs) were produced from the mesenteric lymph node cells from BALB/c mice orally vaccinated with irradiated muscle larvae of Trichinella britovi. One IgA mAb, HUSM-Tb1, formed immunoprecipitates on the surface of live muscle larvae, and by immunohistochemistry reacted with their stichocytes and cuticular surface, but not with those tissues of the adult stage or newborn larvae. Intraperitoneal injection of BALB/c mice with this mAb 5 h before challenge conferred a high level of protection (more than 95%) against T. britovi infection, when 2·0 mg of specific IgA/20 g body weight was given to a mouse. The same treatment produced a similar effect in SCID mice lacking functional T- and B-cells, indicating no requirement of synergistc T-cell factors for the effect. Passive transfer of the mAb at the time of challenge or later showed less or no effect upon worm expulsion. It is concluded that the mucosal IgA response, when adequately induced, can impede the establishment of infective Trichinella parasites in the mouse intestine.
Publisher
Cambridge University Press
Subject
/ Antibodies, Monoclonal - administration & dosage
/ Antibodies, Monoclonal - immunology
/ Biological and medical sciences
/ Cells
/ Dose-Response Relationship, Immunologic
/ Enzyme-Linked Immunosorbent Assay
/ Experimental helminthic diseases. Models
/ Female
/ IgA
/ Immunoglobulin A, Secretory - administration & dosage
/ Immunoglobulin A, Secretory - immunology
/ Intestinal Diseases, Parasitic - immunology
/ Intestinal Diseases, Parasitic - prevention & control
/ Male
/ Mice
/ Rodents
/ Trichinellosis - prevention & control
/ Ursidae
