Effect of peroral anti-bacterial antiserum treatment on intestinal immune parameters of germ-free piglets intragastrically infected with virulent Salmonella typhimurium or enteropathogenic E-coli
I. Trebichavsky et al., Effect of peroral anti-bacterial antiserum treatment on intestinal immune parameters of germ-free piglets intragastrically infected with virulent Salmonella typhimurium or enteropathogenic E-coli, VET IMMUNOL, 67(1), 1999, pp. 55-65
Germ-free piglets were orally infected with either enteropathogenic E. coli
O55 or a virulent strain of Salmonella typhimurium. Orally applied antiser
um against E. coli protected infected animals in spite of the fact that the
bacteria were consistently found in mesenteric lymph nodes and other organ
s. By contrast, the application of an antiserum against S. typhimurium was
without any effect on the outcome of infection. The treatment with anti-bac
terial antiserum prevented inflammation of ileal mucosa (TNF-alpha and heat
shock protein 65 expression) only in piglets infected with E. coli. A decr
ease in the frequency of ileal MAC320(+) cells was observed in all infected
piglets treated with antiserum. (C) 1999 Elsevier Science B.V. All rights
reserved.