title: Effect of macrophage activation on resistance of mouse peritoneal macrophages to infection with herpes simplex virus types 1 and 2.
abstract: To define the effect of heterogeneity of murine peritoneal macrophages (M phi) on intrinsic resistance to herpes simplex virus (HSV) infection, several M phi populations were characterized for their response to infection with HSV type 1 (HSV-1) and HSV-2. Steady-state resident M phi (Res M phi) were compared in parallel with M phi activated with Corynebacterium parvum (now designated Propionibacterium acnes) (CP M phi) and thioglycollate-elicited inflammatory M phi (TG M phi). Res M phi were completely non-permissive for productive virus infection and showed no c.p.e. The intrinsic resistance of CP M phi to HSV infection was similar to that of Res M phi, in that the infection was non-productive for infectious virus, but CP M phi showed marked c.p.e. TG M phi showed semi-permissiveness, with virus yields at least 10-fold higher than those in Res M phi and CP M phi, and marked c.p.e. The three distinct intrinsic response patterns were maintained regardless of whether M phi were derived from CD-1 or B6C3F1 mice, or whether the infecting virus was HSV-1 or HSV-2. To define the level at which M phi restrict HSV replication, immunofluorescence assays for viral antigens and hybridization analyses for viral DNA were performed. All M phi populations showed immediate early and early virus polypeptides. Res M phi and CP M phi showed no viral DNA replication, but TG M phi showed moderate levels of viral DNA synthesis that paralleled the infectious virus titres produced. Investigation of the mechanism for the heterogeneous intrinsic antiviral response among the M phi revealed that interferon was not involved, because antiserum to mouse alpha/beta interferon did not alter the intrinsic resistance patterns. Induction of c.p.e. in M phi required live, replication-competent HSV. The involvement of tumour necrosis factor (TNF) in c.p.e. was found to be unlikely; no significant amounts of TNF were detected in the culture medium of the M phi, and inclusion of anti-TNF antibody did not inhibit c.p.e.
authors.affiliation: Department of Microbiology and Immunology, Medical College of Pennsylvania, Philadelphia 19129.
authors.forename: M F
authors.initials: MF
authors.lastname: Sit
authors.forename: D J
authors.initials: DJ
authors.lastname: Tenney
authors.forename: J L
authors.initials: JL
authors.lastname: Rothstein
authors.forename: P S
authors.initials: PS
authors.lastname: Morahan
mesh_terms: D000818:Animals; D002478:Cells, Cultured; D003588:Cytopathogenic Effect, Viral; D004279:DNA, Viral / Q000096:biosynthesis; D005260:Female; D005455:Fluorescent Antibody Technique; D007700:Kinetics; D008262:Macrophage Activation; D008264:Macrophages / Q000276:immunology / Q000382:microbiology*; D051379:Mice; D018139:Simplexvirus / Q000254:growth & development*; D014709:Vero Cells; D014764:Viral Proteins / Q000096:biosynthesis
chemical_list: D004279:DNA, Viral; D014764:Viral Proteins