摘要
本实验动态观察了大鼠脾切除及粗制大肠杆菌内毒素攻击后血浆内毒素、肿瘤坏死因子(TNF)和NO-2/NO-3水平的变化。结果发现:脾切除组较假手术组血浆上述因子均明显升高(P<0.05或P<0.01),且和单纯腹腔注射大肠杆菌内毒素后所引起的改变非常类似。注射内毒素后,切脾前后血浆上述因子无明显差异,但均处在较高水平上,秩相关分析表明:血浆NO-2/NO-3与内毒素及TNF水平有一定相关性(rs分别为0422及0721,P均<001),其中与TNF高度相关。作者认为:脾切除后机体免疫力下降,可能导致肠道细菌或毒素移位,诱导产生TNF等细胞因子,并协同激活体内Larg:NO通路。这也可能是脾切除后凶险性感染(OPSI)发生机制之一。
The present study observed the significance of the serial changes of plasma NO - 2/NO - 3, tumor necrosis factor (TNF) and endotoxin concentration levels after splenectomy and sepsis. The data showed that the concentration of plasma NO - 2/NO - 3 was significantly increased at all time points after splenectomy ( P <0.05, vs. the sham). When injected with endotoxin, there was no significant difference between the splenectomy group and the sham operation group, but both were in the high levels. The same changes had been seen in the plasma TNF and endotoxin concentrations. There was a significant corelationship between the NO - 2/NO - 3 and TNF concentration ( r s =0.721, P <0.001) or endotoxin levels ( r s =0.422, P <0.01). These results indicate that endotoxin and TNF may induce nitric oxide synthesis after splenectomy. It may be one of the pathogenetic mechanisms of overwhelming postsplenectomy infections (OPSI).
出处
《中国普通外科杂志》
CAS
CSCD
1997年第2期78-82,共5页
China Journal of General Surgery
关键词
脾切除
内毒素
一氧化氮
肿瘤坏死因子
splenectomy\ \ endotoxin\ \ nitric oxide\ \ tumor necrosis factor