Phylogenetic analysis of Bacillus cereus isolates from severe systemic infections using multilocus sequence typing scheme

被引:34
|
作者
Vassileva, Maria
Torii, Keizo
Oshimoto, Megumi
Okamoto, Akira
Agata, Norio
Yamada, Keiko
Hasegawa, Tadao
Ohta, Michio
机构
[1] Nagoya Univ, Grad Sch Med, Dept Bacteriol, Showa Ku, Nagoya, Aichi 4668550, Japan
[2] Nagoya City Publ Hlth Res Inst, Nagoya, Aichi 4678615, Japan
[3] Nagoya City Univ, Dept Microbiol, Nagoya, Aichi 4678601, Japan
基金
英国惠康基金;
关键词
Bacillus cereus; MLST; clinical isolates;
D O I
10.1111/j.1348-0421.2006.tb03847.x
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
100102 ;
摘要
Bacillus cereus strains from cases of severe or lethal systemic infections, including respiratory symptoms cases, were analyzed using multilocus sequence typing scheme of B. cereus MLST database. The isolates were evenly distributed between the two main clades, and 60% of them had allele profiles new to the database. Half of the collection's strains clustered in a lineage neighboring Bacillus anthracis phylogenetic origin. Strains from lethal cases with respiratory symptoms were allocated in both main clades. This is the first report of strains causing respiratory symptoms to be identified as genetically distant from B. anthracis. The phylogenetic location of the presented here strains was compared with all previously submitted to the database isolates from systemic infections, and were found to appear in the same clusters where clinical isolates from other studies had been assigned. It seems that the pathogenic strains are forming clusters on the phylogenetic tree.
引用
收藏
页码:743 / 749
页数:7
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