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吞噬作用在具有O抗原6,7或4,12的鼠伤寒沙门氏菌重组体小鼠毒力中的作用

Role of phagocytosis in mouse virulence of Salmonella typhimurium recombinants with O antigen 6,7 or 4,12.

作者信息

Valtonen M V

出版信息

Infect Immun. 1977 Dec;18(3):574-82. doi: 10.1128/iai.18.3.574-582.1977.

Abstract

The quality of lipopolysaccharide has previously been shown to influence the mouse virulence of Salmonella so that strains with O antigen 4,12 were more virulent than their O-9,12 sister strains. Immunosuppression did not alter this O-antigen-dependent difference in virulence. I have now constructed smooth O-4,12 and O-6,7 sister hybrid strains of Salmonella typhimurium. No other phenotypic differences were found between these strains; they were all "common antigen" positive. In intraperitoneal infection, the O-4,12 strains were more mouse virulent than their O-6,7 sisters. The difference in virulence correlated with a difference in clearance rates; the O-6,7 hybrids were removed from the blood more rapidly than their O-4,12 sisters. No natural bactericidal antibodies were found in the sera of the mice.

摘要

先前已表明脂多糖的质量会影响沙门氏菌对小鼠的毒力,使得具有O抗原4、12的菌株比其O-9、12的姊妹菌株毒力更强。免疫抑制并未改变这种毒力上的O抗原依赖性差异。我现在构建了鼠伤寒沙门氏菌的光滑O-4、12和O-6、7姊妹杂交菌株。这些菌株之间未发现其他表型差异;它们均为“共同抗原”阳性。在腹腔感染中,O-4、12菌株比其O-6、7姊妹菌株对小鼠的毒力更强。毒力差异与清除率差异相关;O-6、7杂交菌株比其O-4、12姊妹菌株从血液中清除得更快。在小鼠血清中未发现天然杀菌抗体。

相似文献

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Intestinal colonization and virulence of Salmonella in mice.沙门氏菌在小鼠肠道内的定殖与毒力
Infect Immun. 1978 Dec;22(3):763-70. doi: 10.1128/iai.22.3.763-770.1978.

引用本文的文献

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Pathogenesis and immunity in murine salmonellosis.鼠伤寒沙门氏菌病的发病机制与免疫
Microbiol Rev. 1989 Dec;53(4):390-409. doi: 10.1128/mr.53.4.390-409.1989.

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