Funke G, Stubbs S, Pfyffer G E, Marchiani M, Collins M D
Department of Medical Microbiology, University of Zürich, Switzerland.
J Clin Microbiol. 1994 May;32(5):1223-8. doi: 10.1128/jcm.32.5.1223-1228.1994.
Over a 1-year period, 11 isolates (including 5 from blood cultures) of the recently described CDC group 3 and group 5 coryneform bacteria were derived from clinical specimens and compared with reference strains. Biochemical characteristics indicated a very close relationship between CDC group 3 and group 5 coryneform bacteria. The ability of CDC group 3 and the inability of CDC group 5 coryneform bacteria to ferment xylose were the only reactions that were different for the two taxa. Chemotaxonomic features of the two groups included the presence of meso-diaminopimelic acid, a lack of mycolic acids, and the presence of predominantly branched cellular fatty acids, a combination found among gram-positive rods only in Brevibacterium spp., Brachybacterium faecium, and Dermabacter hominis. 16S rRNA gene sequence analysis revealed that CDC group 3 and group 5 coryneform bacteria are members of the genus Dermabacter, which to date has been isolated exclusively from human skin.
在为期1年的时间里,从临床标本中分离出11株最近描述的疾病控制与预防中心(CDC)3组和5组棒状杆菌(包括5株来自血培养),并与参考菌株进行比较。生化特征表明CDC 3组和5组棒状杆菌之间关系非常密切。CDC 3组能够发酵木糖而CDC 5组棒状杆菌不能发酵木糖,这是这两个分类单元唯一不同的反应。两组的化学分类特征包括存在内消旋二氨基庚二酸、缺乏分枝菌酸以及主要存在分支的细胞脂肪酸,这种组合仅在短杆菌属、粪短杆菌和人皮肤杆菌等革兰氏阳性杆菌中发现。16S rRNA基因序列分析表明,CDC 3组和5组棒状杆菌是皮肤杆菌属的成员,迄今为止该属仅从人类皮肤中分离得到。