Rasool O, Freer E, Moreno E, Jarstrand C
Karolinska Institute, Department of Clinical Bacteriology, Huddinge Hospital, Sweden.
Infect Immun. 1992 Apr;60(4):1699-702. doi: 10.1128/iai.60.4.1699-1702.1992.
Both Brucella abortus lipopolysaccharide (LPS) and lipid A were low activators of nitroblue tetrazolium reduction and lysozyme release in human neutrophils. The stimulation was dose dependent and was higher in the presence of autologous plasma than in its absence. The comparison between Brucella LPS and lipid A versus Salmonella LPS revealed that at least 100 times more LPS and 1,000 times more lipid A of the former genus were required to induce significant nitroblue tetrazolium reduction and a corresponding lysozyme release in neutrophils. Low Brucella LPS-mediated superoxide and lysozyme production might contribute to the survival of these facultative intracellular bacteria in phagocytic cells.
布鲁氏菌流产亚种脂多糖(LPS)和类脂A都是人中性粒细胞中硝基蓝四氮唑还原和溶菌酶释放的低激活剂。这种刺激呈剂量依赖性,且在有自体血浆存在时比不存在时更高。布鲁氏菌LPS和类脂A与沙门氏菌LPS的比较显示,前者属的LPS至少需要多100倍、类脂A至少需要多1000倍才能在中性粒细胞中诱导显著的硝基蓝四氮唑还原及相应的溶菌酶释放。低水平的布鲁氏菌LPS介导的超氧化物和溶菌酶产生可能有助于这些兼性胞内细菌在吞噬细胞中的存活。