Genetic control of in vitro natural cell-mediated activity against Salmonella typhimurium by intestinal and splenic lymphoid cells in mice.
In vitro natural anti-bacterial activity against Salmonella typhimurium by lymphocytes from Peyer's patches and spleens was assessed in several mouse strains. C3H/HeN and CBA/J mice, which are resistant to S. typhimurium infections, showed a natural anti-bacterial activity significantly higher than BALB/c, C57BL/10, C57BL/6 and C3H/HeJ mice, i.e. strains susceptible to the in vivo bacterial infection. In these susceptible strains and also in A/J mice, a significantly higher natural activity was observed in females compared to males. The sex control of natural anti-bacterial activity was further stressed by the fact that orchidectomy could induce a strong activity in low responder C57BL/10 male mice. With the exception of Beige mice, a low natural killer (NK) strain also with no natural activity against S. typhimurium in both sexes, the genetic distribution of natural anti-bacterial activity was extremely different from that of the NK activity. Thus, these results further stress the difference between natural anti-bacterial activity and NK cytotoxicity. Furthermore, our data establish a possible link, although with some exceptions, between in vivo susceptibility to S. typhimurium infections and in vitro natural activity against these bacteria.
D000818:Animals; D005260:Female; D007111:Immunity, Cellular; D007113:Immunity, Innate; D008214:Lymphocytes / Q000276:immunology*; D008221:Lymphoid Tissue / Q000276:immunology*; D008297:Male; D051379:Mice; D008815:Mice, Inbred Strains; D010581:Peyer's Patches / Q000276:immunology*; D012480:Salmonella Infections / Q000235:genetics / Q000276:immunology*; D012486:Salmonella typhimurium / Q000276:immunology; D012737:Sex Factors; D013154:Spleen / Q000276:immunology*