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金黄色葡萄球菌中对利奈唑胺和万古霉素的高水平耐药性检测。

Detection of high levels of resistance to linezolid and vancomycin in Staphylococcus aureus.

作者信息

Azhar Aysha, Rasool Samreen, Haque Asma, Shan Sidra, Saeed Muhammad, Ehsan Beenish, Haque Abdul

机构信息

Postgraduate Research Laboratory, The University of Faisalabad, Faisalabad, Pakistan.

Department of Bioinformatics and Biotechnology, GC University, Faisalabad, Pakistan.

出版信息

J Med Microbiol. 2017 Sep;66(9):1328-1331. doi: 10.1099/jmm.0.000566. Epub 2017 Aug 31.

Abstract

Both methicillin-resistant Staphylococcus aureus (MRSA) and methicillin-sensitive S. aureus (MSSA) are rapidly overcoming the current array of drugs. One hundred and fifty isolates from a hospital were studied for resistance towards linezolid and vancomycin. Fifty-four (36.0 %) isolates were MRSA. Both MRSA and MSSA showed high resistance towards linezolid when using the disc diffusion method, with the figures being 48.1 and 29.2 %, respectively. The figures for the E-test were 46.3 and 27.0 %, respectively. The vancomycin resistance was remarkable in MRSA (14.8 %), but relatively low in MSSA (3.1 %). The E-test results were 13.0 and 4.16 %, respectively. The cfr gene was detected in 78 % of linezolid-resistant isolates and the vanA operon was detected in 74 % of vancomycin-resistant isolates. This level of resistance against linezolid and vancomycin is unprecedented. These results are alarming and highlight the threat of non-treatable S. aureus strains.

摘要

耐甲氧西林金黄色葡萄球菌(MRSA)和甲氧西林敏感金黄色葡萄球菌(MSSA)都在迅速对目前的一系列药物产生耐药性。对一家医院的150株分离菌株进行了对利奈唑胺和万古霉素耐药性的研究。54株(36.0%)分离菌株为MRSA。当使用纸片扩散法时,MRSA和MSSA对利奈唑胺均表现出较高的耐药性,分别为48.1%和29.2%。E-test法得到的数字分别为46.3%和27.0%。MRSA对万古霉素的耐药性显著(14.8%),但在MSSA中相对较低(3.1%)。E-test结果分别为13.0%和4.16%。在78%的耐利奈唑胺分离菌株中检测到cfr基因,在74%的耐万古霉素分离菌株中检测到vanA操纵子。这种对利奈唑胺和万古霉素的耐药水平是前所未有的。这些结果令人担忧,并突出了不可治疗的金黄色葡萄球菌菌株的威胁。

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