超氧化物歧化酶在牙龈卟啉单胞菌抵抗多形核白细胞杀伤中的作用
Role of superoxide dismutase in resistance of Porphyromonas gingivalis to killing by polymorphonuclear leukocytes.
作者信息
Amano A, Ishimoto T, Tamagawa H, Shizukuishi S
机构信息
Department of Preventive Dentistry, Osaka University Faculty of Dentistry, Japan.
出版信息
Infect Immun. 1992 Feb;60(2):712-4. doi: 10.1128/iai.60.2.712-714.1992.
Abstract
Porphyromonas gingivalis in which the synthesis of superoxide dismutase (SOD) was induced by nitrate or by aeration was rendered resistant to killing by polymorphonuclear leukocytes. SOD purified from either anaerobically maintained or aerated cells also inhibited bacterial killing when added exogenously, and no difference between the effects of the two SODs was observed. These results suggest that SOD may form part of a defense mechanism that helps protect P. gingivalis against killing by polymorphonuclear leukocytes.
摘要
牙龈卟啉单胞菌中，超氧化物歧化酶（SOD）的合成可被硝酸盐或通气诱导，该菌由此对多形核白细胞的杀伤产生抗性。从厌氧培养或通气培养的细胞中纯化得到的SOD，外源添加时也能抑制细菌被杀伤，且未观察到两种SOD的作用有差异。这些结果表明，SOD可能构成一种防御机制的一部分，有助于保护牙龈卟啉单胞菌免受多形核白细胞的杀伤。
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