Mages Irene S, Frodl Reinhard, Bernard Kathryn A, Funke Guido
Department of Medical Microbiology and Hygiene, Gärtner & Colleagues Laboratories, Ravensburg, Germany.
J Clin Microbiol. 2008 Sep;46(9):2980-6. doi: 10.1128/JCM.00658-08. Epub 2008 Jul 23.
After the initial description of Arthrobacter spp. isolated from clinical specimens in the mid-1990s, very few further reports on Arthrobacter spp. have appeared in the clinical microbiology literature. The aim of the present study was to elucidate the distribution of Arthrobacter spp. and Arthrobacter-like bacteria encountered in clinical specimens by studying 50 consecutively isolated or received strains of large-colony-forming, whiteish-grayish, non-cheese-like-smelling, nonfermentative gram-positive rods by applying phenotypic methods as well as 16S rRNA gene sequencing. We observed a very heterogenous distribution, with the 50 strains belonging to 20 different taxa and each of 13 strains as a single representative of its particular taxon. Thirty-eight strains represented true Arthrobacter strains, 7 strains belonged to the genus Brevibacterium, 2 were Microbacterium species, and each of 3 single strains was a member of the rarely encountered genera Pseudoclavibacter, Leucobacter, and Brachybacterium, respectively. A. cumminsii (n = 14) and A. oxydans (n = 11) were the most frequently found species. The present report describes the first three A. aurescens strains isolated from human clinical specimens. Comprehensive antimicrobial susceptibility data are given for the 38 Arthrobacter isolates.
自20世纪90年代中期首次报道从临床标本中分离出节杆菌属细菌以来，临床微生物学文献中关于节杆菌属细菌的进一步报道极少。本研究的目的是通过应用表型方法以及16S rRNA基因测序，对50株连续分离或接收的大菌落形成、灰白色、无奶酪样气味、非发酵革兰氏阳性杆菌菌株进行研究，以阐明临床标本中节杆菌属细菌及类节杆菌细菌的分布情况。我们观察到分布非常不均一，这50株菌株属于20个不同的分类单元，其中13株菌株各自作为其特定分类单元的唯一代表。38株代表真正的节杆菌菌株，7株属于短杆菌属，2株是微杆菌属物种，3株单株菌株分别属于罕见的假棒状杆菌属、勒克氏菌属和短芽孢杆菌属。康宁节杆菌（n = 14）和氧化节杆菌（n = 11）是最常发现的物种。本报告描述了从人类临床标本中分离出的前三株金色节杆菌菌株。给出了38株节杆菌分离株的全面抗菌药敏数据。
