title: Protection of mice against viral infection by Corynebacterium parvum and Bordetella pertussis.
abstract: Mice could be significantly protected against infection with herpes simplex virus (HSV) by i.p. or i.v. injection of killed Corynebacterium parvum 7 days before infection. This protection was seen in inbred strains of mice with a different degree of sensitivity to HSV and after both i.p. and i.v. infection. Resistant mice immunosuppressed by X-irradiation and showing an increased susceptibility to HSV could also be protected by a previous injection of C. parvum. Elevated levels of interferon were demonstrated in the serum of mice injected with C. parvum 5 to 12 days previously. Four different strains of anaerobic coryneforms were compared and only those which were able to induce a systemic activation of the lymphoreticular system (as reflected by splenomegaly) protected against HSV infection. Protection against HSV-infection could also be demonstrated by using killed Bordetella pertussis. C. parvum also protected against Semliki Forest virus infection in two different strains of mice.
mesh_terms: D000818:Animals; D001886:Bordetella pertussis; D006561:Herpes Simplex / Q000276:immunology / Q000517:prevention & control*; D007165:Immunosuppression Therapy; D007372:Interferons / Q000097:blood; D051379:Mice; D008815:Mice, Inbred Strains; D012157:Mononuclear Phagocyte System / Q000502:physiology*; D011425:Propionibacterium acnes; D013045:Species Specificity
chemical_list: D007372:Interferons