Role of tumor necrosis factor alpha in pathogenesis of pneumococcal pneumonia in mice

被引:125
作者
Takashima, K [1 ]
Tateda, K [1 ]
Matsumoto, T [1 ]
Iizawa, Y [1 ]
Nakao, M [1 ]
Yamaguchi, K [1 ]
机构
[1] TOHO UNIV, SCH MED, DEPT MICROBIOL, TOKYO, JAPAN
关键词
STREPTOCOCCUS-PNEUMONIAE; NEUTROPHILS; MENINGITIS; STIMULATION; ENDOTHELIUM; GENERATION; INFECTION; COMMUNITY; CYTOKINES; ETIOLOGY;
D O I
10.1128/IAI.65.1.257-260.1997
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
100102 ;
摘要
The production and role of tumor necrosis factor alpha (TNF-alpha) in pneumococcal pneumonia were investigated in a mouse pneumonia model, When approximately 10(6) CFU of Streptococcus pneumoniae TUM19 were used to inoculate CBA/J mice intranasally, TNF-alpha levels in the lungs and serum began to increase from 1 and 3 days after infection, respectively, concomitantly with the increase in bacterial counts in the lungs, Anti-TNF-alpha antibody accelerated bacterial proliferation in the blood and the death of the mice. Although serum levels of not affected by the anti-TNF-alpha antibody treatment, neutrophil counts in the blood were decreased by the treatment. These results suggest that TNF-alpha produced in the course of pneumococcal pneumonia prevents bacteremia by increasing the number of neutrophils in the blood.
引用
收藏
页码:257 / 260
页数:4
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