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首页> 外文期刊>Infection and immunity >Bacteroidaceae in Thromboembolic Disease: Effects of Cell Wall Components on Blood Coagulation In Vivo and In Vitro
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Bacteroidaceae in Thromboembolic Disease: Effects of Cell Wall Components on Blood Coagulation In Vivo and In Vitro

机译:血栓栓塞性疾病中的拟杆菌科:细胞壁成分对体内和体外血液凝固的影响

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The effects of Bacteroides sp., Fusobacterium mortiferum, Bacteroides fragilis, and Sphaerophorus necrophorus on various parameters of blood coagulation in vivo and in vitro were determined and compared to the coagulation effects of Escherichia coli and Salmonella minnesota, wild type and R595. Intravenous injection of washed cells, culture filtrate, lipopolysaccharide, or lipid A of the anaerobic gram-negative microorganisms into mice resulted in acceleration of coagulation. Lipopolysaccharide and lipid A of the anaerobic microorganisms had no apparent effect on circulating platelets in mice or rabbits and did not cause aggregation of human platelets in vitro. Washed cells, lipopolysaccharide, and lipid A of Bacteroides sp. and F. mortiferum also significantly accelerated the clotting time of recalcified platelet poor normal human plasma and C6-deficient rabbit plasma. Lipid A, but not lipopolysaccharide, of E. coli and washed cells of S. minnesota R595 accelerated coagulation by a similar mechanism. These results indicated that Bacteroides sp. and F. mortiferum can accelerate blood coagulation in vivo and in vitro by a mechanism which does not involve platelets or terminal components of complement.
机译:确定了拟杆菌菌,桑氏融合杆菌,脆弱拟杆菌 Sphaerophorus necrophorus 对体内和体外凝血参数的影响并与大肠杆菌明尼苏达沙门氏菌,野生型和R595的凝血效果进行了比较。将清洗过的细胞,培养物滤液,脂多糖或厌氧革兰氏阴性微生物的脂质A静脉内注入小鼠体内,加速了凝血。厌氧微生物的脂多糖和脂质A对小鼠或兔子的循环血小板没有明显影响,并且在体外不会引起人血小板的聚集。洗涤后的细菌 Bacteroides sp。的细胞,脂多糖和脂质A。和 F。 mortiferum 还显着加快了重新钙化的血小板正常人血浆和C6缺乏兔血浆的凝血时间。 E的脂类A,而不是脂多糖。大肠杆菌和洗涤过的 S细胞。明尼苏达州的R595通过类似的机制促进了凝血。这些结果表明拟杆菌 sp。和 F。 mortiferum 可以通过不涉及血小板或补体末端成分的机制促进体内和体外的凝血。

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