Aires de Sousa M, Sanches I S, Ferro M L, Vaz M J, Saraiva Z, Tendeiro T, Serra J, de Lencastre H
Unidade de Genética Molecular, Instituto de Tecnologia Química e Biológica da Universidade Nova de Lisboa (ITQB/UNL), Oeiras, Lisbon, Portugal.
J Clin Microbiol. 1998 Sep;36(9):2590-6. doi: 10.1128/JCM.36.9.2590-2596.1998.
Two hundred ten methicillin-resistant Staphylococcus aureus (MRSA) isolates recovered between 1990 and 1997 from three Portuguese hospitals located in Lisbon and Oporto were analyzed by molecular fingerprinting techniques. The hybridization of ClaI restriction digests with the mecA- and Tn554-specific DNA probes combined with pulsed-field gel electrophoresis documented the abrupt appearance and extensive intrahospital spread of the Brazilian epidemic MRSA clone in the 1995 samples of each one of the three hospitals analyzed-suggesting the intercontinental transfer of this strain from Brazil to Portugal. The appearance of this clone may challenge the dominance of another highly epidemic imported clone-the Iberian MRSA, currently the most widely spread MRSA clone in Portuguese hospitals.
对1990年至1997年间从位于里斯本和波尔图的三家葡萄牙医院分离出的210株耐甲氧西林金黄色葡萄球菌(MRSA)进行了分子指纹技术分析。用mecA和Tn554特异性DNA探针与ClaI限制性酶切片段杂交,并结合脉冲场凝胶电泳,记录了1995年这三家医院所分析的每个样本中巴西流行MRSA克隆的突然出现和在医院内的广泛传播,这表明该菌株从巴西洲际转移到了葡萄牙。这个克隆的出现可能会挑战另一个高度流行的输入性克隆——伊比利亚MRSA的主导地位,目前伊比利亚MRSA是葡萄牙医院中传播最广的MRSA克隆。