نتایج جستجو برای: shv gene

تعداد نتایج: 1142118  

2015
Yu Feng Ping Yang Yi Xie Xiaohui Wang Alan McNally Zhiyong Zong

New Delhi metallo-β-lactamase (NDM) represents a serious challenge for treatment and public health. A carbapenem-resistant Escherichia coli clinical strain WCHEC13-8 was subjected to antimicrobial susceptibility tests, whole genome sequencing and conjugation experiments. It was resistant to imipenem (MIC, >256 μg/ml) and meropenem (MIC, 128 μg/ml) and belonged to ST3835. bla NDM-1 was the only ...

Journal: :Antimicrobial agents and chemotherapy 2000
M Yuan L M Hall P H Savelkoul C M Vandenbroucke-Grauls D M Livermore

Eleven clonally related Klebsiella pneumoniae isolates were examined. These had been isolated at an intensive care unit in Amsterdam in 1994. Their resistance was associated with a conjugative 170-kb plasmid which encoded a novel SHV beta-lactamase designated SHV-13. The SHV-13 enzyme had two substitutions compared with SHV-1: Leu35Gln and Gly238Ala. It hydrolyzed cefotaxime much more rapidly t...

2015
Andy S L Tan Cabral A Bigman Susan Mello Ashley Sanders-Jackson

OBJECTIVES E-cigarettes are frequently advertised and portrayed in the media as less harmful compared with regular cigarettes. Earlier surveys reported public perceptions of harms to people using e-cigarettes; however, public perceptions of harms from exposure to secondhand vapour (SHV) have not been studied. We examined associations between self-reported exposure to e-cigarette advertising, me...

Journal: :Journal of epidemiology and community health 2005
M Wiggins A Oakley I Roberts H Turner L Rajan H Austerberry R Mujica M Mugford M Barker

STUDY OBJECTIVE To evaluate the effect of two forms of postnatal social support for disadvantaged inner city mothers on maternal and child health outcomes. DESIGN Randomised controlled trial with economic and process evaluations and follow up at 12 and 18 months. The two intervention groups received either the offer of a year of monthly supportive listening home visits by a support health vis...

2017
Sonal P. Henson Christine J. Boinett Matthew J. Ellington Ngure Kagia Salim Mwarumba Sammy Nyongesa Neema Mturi Samuel Kariuki J. Anthony G. Scott Nicholas R. Thomson Susan C. Morpeth

Multidrug resistant (MDR) Klebsiella pneumoniae is a common cause of nosocomial infections worldwide. Recent years have seen an explosion of resistance to extended-spectrum β-lactamases (ESBLs) and emergence of carbapenem resistance. Here, we examine 198 invasive K. pneumoniae isolates collected from over a decade in Kilifi County Hospital (KCH) in Kenya. We observe a significant increase in MD...

Journal: :Antimicrobial agents and chemotherapy 2005
Inna Chmelnitsky Yehuda Carmeli Azita Leavitt Mitchell J Schwaber Shiri Navon-Venezia

The rate of occurrence of the extended-spectrum beta-lactamase (ESBL)-producing phenotype among Escherichia coli isolates in Tel Aviv is 12% (22). The aim of this study was to understand the molecular epidemiology of E. coli ESBL producers and to identify the ESBL genes carried by them. We studied 20 single-patient ESBL-producing E. coli clinical isolates. They comprised 11 distinct nonrelated ...

Journal: :Journal of clinical microbiology 2003
Michael R Mulvey Geoff Soule David Boyd Walter Demczuk Rafiq Ahmed

A single Salmonella enterica serovar Typhimurium isolate with an UT2 phage type producing an extended-spectrum beta-lactamase (ESBL) was identified in Canada in 2000. The isolate harbored two plasmids, one containing a bla(TEM-1) gene and the other containing a bla(SHV-2a) gene. The ESBL gene was located on a 70-kb transferable plasmid which also carried tetracycline and trimethoprim resistance...

Journal: :Antimicrobial agents and chemotherapy 2010
Shuji Uemura Shin-ichi Yokota Hirotoshi Mizuno Eiji Sakawaki Keigo Sawamoto Kunihiko Maekawa Katsutoshi Tanno Kazuhisa Mori Yasufumi Asai Nobuhiro Fujii

Three of seven clonally related Pseudomonas aeruginosa strains isolated from a burn patient produced the extended-spectrum beta-lactamase (ESBL) SHV-12. Its gene was flanked by two IS26 elements with a large transposon (>24 kb). The transposon also contained at least five IS26 elements and a gene encoding the amikacin resistance determinant aminoglycoside 6'-N-acetyltransferase type Ib [aac(6')...

Journal: :Antimicrobial agents and chemotherapy 2005
Martina Zarnayová Eliane Siebor André Péchinot Jean-Marie Duez Helena Bujdáková Roger Labia Catherine Neuwirth

Eighty-five extended-spectrum beta-lactamase-producing Enterobacteriaceae from a Slovak hospital have been studied. SHV-2a was predominant, but other variants have been detected, namely, SHV-5, SHV-12, TEM-12, TEM-15, and TEM-132, which differed from TEM-1 by amino acid substitutions R164H, E240K, and I173V and had kinetic properties similar to those of TEM-28.

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