The ultrastructure of antibiotic-susceptible and multi-resistant strains of group JK diphtheroid rods isolated from clinical specimens.

J Blom, O Heltberg
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引用次数: 3

Abstract

Two antibiotic-susceptible and two multi-resistant strains of diphtheroid rods of the group JK, obtained from clinical specimens in Denmark and from CDC in the U.S. were studied. The cells of all four strains presented an ordinary Gram-positive cell wall and an additional surface layer. Septum formation in dividing cells appeared to result in a "snapping-like" dividing mechanism, thus corroborating the relationship of the JK cells to the genus Corynebacterium. A significantly increased thickness of the surface layer of the multi-resistant strains was observed when cells were treated with ruthenium red. It is suggested that such a structural difference on the exterior of the cell-wall among JK bacteria may affect the cell-wall's permeability to antibiotics.

临床分离的JK组白喉棒耐药和多耐药菌株的超微结构。
对丹麦临床标本和美国疾病控制与预防中心采集的JK组白喉棒2株抗生素敏感株和2株多重耐药株进行了研究。四种菌株的细胞均呈现普通革兰氏阳性细胞壁和额外的表面层。分裂细胞中隔膜的形成似乎导致了一种“断裂样”的分裂机制,从而证实了JK细胞与棒状杆菌属的关系。经钌红处理后,多抗性菌株的表面层厚度明显增加。提示JK菌细胞壁外的这种结构差异可能会影响细胞壁对抗生素的渗透性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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