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liuxingxp

木虫 (著名写手)


[资源] 【资源】关于能够抵御所有抗生素的超级病菌的柳叶刀论文,新鲜送上

Emergence of a new antibiotic resistance mechanism in
India, Pakistan, and the UK: a molecular, biological, and
epidemiological study

Summary
Background Gram-negative Enterobacteriaceae with resistance to carbapenem conferred by New Delhi metallo-β-
lactamase 1 (NDM-1) are potentially a major global health problem. We investigated the prevalence of NDM-1, in
multidrug-resistant Enterobacteriaceae in India, Pakistan, and the UK.
Methods Enterobacteriaceae isolates were studied from two major centres in India—Chennai (south India),
Haryana (north India)—and those referred to the UK’s national reference laboratory. Antibiotic susceptibilities
were assessed, and the presence of the carbapenem resistance gene blaNDM-1 was established by PCR. Isolates were
typed by pulsed-fi eld gel electrophoresis of XbaI-restricted genomic DNA. Plasmids were analysed by S1 nuclease
digestion and PCR typing. Case data for UK patients were reviewed for evidence of travel and recent admission to
hospitals in India or Pakistan.
Findings We identifi ed 44 isolates with NDM-1 in Chennai, 26 in Haryana, 37 in the UK, and 73 in other sites in India
and Pakistan. NDM-1 was mostly found among Escherichia coli (36) and Klebsiella pneumoniae (111), which were highly
resistant to all antibiotics except to tigecycline and colistin. K pneumoniae isolates from Haryana were clonal but
NDM-1 producers from the UK and Chennai were clonally diverse. Most isolates carried the NDM-1 gene on plasmids:
those from UK and Chennai were readily transferable whereas those from Haryana were not conjugative. Many of the
UK NDM-1 positive patients had travelled to India or Pakistan within the past year, or had links with these countries.
Interpretation The potential of NDM-1 to be a worldwide public health problem is great, and co-ordinated international
surveillance is needed.
Funding European Union, Wellcome Trust, and Wyeth.

全文下载地址
http://www.91box.net/?B60NOMJHOWETK6YA7ECW

[ Last edited by liuxingxp on 2010-8-12 at 20:31 ]
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horizon801

新虫 (初入文坛)


弗莱明发现青霉素后,人类曾以为找到对付病原菌的利器。但是,随着耐药菌的不断出现,有人甚至悲观地认为,抗生素时代终究会被耐药菌的出现所终结。地球上微生物的种类大于其他所有的物种数目之和,而人类自身携带的细菌数目,又远超过其所有的细胞。生物学家不禁感叹:人类可能只是外来生物,而微生物才是地球的主人。

2008年《科学》杂志在“细菌的反击”一文中曾这样描述:1943年青霉素大规模使用,1945年院内感染的20%金黄色葡球菌对其产生抗性;1947年链霉菌素上市,同年该药耐药菌出现;1952年四环菌素上市,1956年其耐药菌出现;1959年甲氧西林上市,1961年其耐药菌出现;1964年头孢噻吩上市,1966年其耐药菌出现;1967年庆大霉素上市,1970年其耐药菌出现;1981年头孢噻肟上市,1983年其耐药菌出现;1996年,发现万古霉素耐药菌;2001年利奈唑胺上市,2002年其耐药菌出现。此后数年里,仅有达托霉素等寥寥数种新型抗生素问世。

以上摘自我写的一篇科学评述“耐药病原菌的肆虐与抗药基因的产生(刊于南方周末)http://www.infzm.com/content/49096
6楼2010-08-25 14:50:46
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cz2004cz

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★★★ 三星级,支持鼓励

刚在其他地方看到了,还以为是假的,没想到柳叶刀都发了,看来是真的
2楼2010-08-12 21:37:13
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liuxingxp

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引用回帖:
Originally posted by cz2004cz at 2010-08-12 21:37:13:
刚在其他地方看到了,还以为是假的,没想到柳叶刀都发了,看来是真的

可能有夸大其词的成分,注意本研究是由Wyeth赞助的,而wyeth是部分有效的tigecycline的生产厂家
3楼2010-08-12 22:31:21
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cuiyubin476

金虫 (正式写手)


引用回帖:
Originally posted by liuxingxp at 2010-08-12 22:31:21:

可能有夸大其词的成分,注意本研究是由Wyeth赞助的,而wyeth是部分有效的tigecycline的生产厂家

也许哦啊
4楼2010-08-14 16:06:52
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