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. 1982 Jun;36(3):1168–1174. doi: 10.1128/iai.36.3.1168-1174.1982

Association of type 1 pili with the ability of livers to clear Salmonella typhimurium.

R D Leunk, R J Moon
PMCID: PMC551453  PMID: 6124504

Abstract

The role of type 1 pili in the adherence of Salmonella typhimurium strain SR-11 to hepatic sinusoidal cells was investigated. An average of 66.7% of piliated organisms was cleared by perfused livers on a single pass. Mannose and alpha-methyl-D-mannoside inhibited such trapping in a dose-dependent manner. Preincubation of the bacteria, but not the liver, with either sugar also inhibited trapping, suggesting that the sugar binds to bacterial, not hepatic, receptors. Significant numbers of previously trapped bacteria could be eluted by adding mannose to the wash medium. Bacteria with reduced piliation, obtained either by growing bacteria on agar or by using a nonpiliated variant of the parent strain, were trapped to a significantly lesser extent than the parent strain. The liver appears to selectively trap heavily piliated organisms since reperfusion of bacteria through a second liver results in significantly less trapping than occurs with the first perfusion. In vivo, the nonpiliated variant strain was cleared much more slowly than the piliated parent strain. Mannose and alpha-methyl-D-mannoside, but not glucose, decreased clearance rates of piliated organisms. Cumulatively, the data suggest that type 1 pili are a major factor in hepatic clearance of S. typhimurium.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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