Differences in production of several extracellular virulence factors in clinical and food Aeromonas spp. strains.
Differences in production of several extracellular virulence factors in clinical and food Aeromonas spp. strains.
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临床和食品气单胞菌属几种细胞外毒力因子产生的差异。
DOI：
10.1111/j.1365-2672.1995.tb02839.x
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
C. Casas
中科院分区：
文献类型：
--
作者：
Carmen Pin;M. L. Marín;D. Selgas;M. Luisa García;J. Tormo;C. Casas
对15株气单胞菌产生的几种胞外毒力因子(脂肪酶、蛋白酶和溶血素)进行了比较。从气单胞菌相关性胃肠炎患者的粪便中分离出81株来自食品的菌株。与从粪便中分离的菌株相比，来自食品的菌株在产生这些因子方面没有显示出差异。然而，如果考虑与自身凝集(AA)特性有关的菌株，AA+菌株在脂肪酶和蛋白酶的产生上与AA-菌株不同。AA+食品菌株和人类菌株的上清液中的蛋白酶产量是AA-菌株的2.5倍。某些气单胞菌的这两个特征可能与其更强的毒力有关。
Production of several extracellular virulence factors (lipase, protease and haemolysin) was compared in 15 Aeromonas spp. isolated from faeces of patients with Aeromonas-associated gastroenteritis and 81 strains isolated from food. Strains from food did not show differences in production of these factors when compared with strains isolated from faeces. However, if strains were considered in relation to autoagglutination (AA) character, the AA+ differed from AA- strains in lipase and protease production. Supernatant fluids of AA+ food and human strains showed 2.5-fold more protease production than that observed in AA- strains. These two characteristics of certain Aeromonas strains could be related with the more virulent capacity.