title: Immunological consequences of intestinal helminth infections. Humoral responses to ovalbumin.
abstract: Humoral responses to ovalbumin (OA) administered i.p. with Al(OH)3 were depressed in C57BL mice immunized 5-13 days after infection with N. dubius, but not N. brasiliensis or T. muris. These two parasites induced elevated IgM responses, possibly as a result of systemic contact with parasite larvae or debris since i.v. administered N. dubius also increased IgM titres to OA. Depression of anti-OA IgG titres by N. dubius was also observed in infected BALB/c and CBA mice given OA-Al(OH)3 (i.p.), but not in C57BL mice given OA-Al(OH)3 (s.c.), OA-FCA (i.p. or s.c.), or OA-B, pertussis (i.p.). These findings suggest that local effects of N. dubius within the peritoneum reduce the adjuvanticity of Al(OH)3, resulting in depressed responses to OA-Al(OH)3.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D004797:Enzyme-Linked Immunosorbent Assay; D006373:Helminthiasis / Q000276:immunology*; D007074:Immunoglobulin G / Q000032:analysis; D007075:Immunoglobulin M / Q000032:analysis; D066298:In Vitro Techniques; D007410:Intestinal Diseases / Q000276:immunology*; D051379:Mice; D008807:Mice, Inbred BALB C; D008810:Mice, Inbred C57BL; D008808:Mice, Inbred CBA; D010047:Ovalbumin / Q000276:immunology*; D013045:Species Specificity
chemical_list: D007074:Immunoglobulin G; D007075:Immunoglobulin M; D010047:Ovalbumin