Ibrahim A, Gerner-Smidt P, Sjöstedt A
Department of Clinical Microbiology, Statens Seruminstitut, Copenhagen, Denmark.
J Clin Microbiol. 1996 Dec;34(12):2894-6. doi: 10.1128/jcm.34.12.2894-2896.1996.
By use of primers specific to conserved regions of the rRNA gene cluster, a discrete amplicon of approximately 5 kb was amplified by PCR from all 21 bacterial genera investigated. Subsequent endonuclease digestion of the PCR product with HaeIII distinguished between the three species of the human pathogen Francisella spp. on the one hand and four clinically relevant genomic groups of Acinetobacter spp. on the other hand. The described technique has the potential as a rapid method for discriminating between closely related species that are of clinical importance.
通过使用针对rRNA基因簇保守区域的特异性引物,利用聚合酶链式反应(PCR)从所研究的全部21个细菌属中扩增出了一段约5 kb的离散扩增子。随后用HaeIII对PCR产物进行核酸内切酶消化,可区分人类病原体弗朗西斯菌属的三个种,另一方面也能区分不动杆菌属的四个临床相关基因组群。所描述的技术有潜力成为一种快速鉴别具有临床重要性的密切相关菌种的方法。