نتایج جستجو برای: oxa 58

تعداد نتایج: 72456  

2013
Shu-Chen Kuo Su-Pen Yang Yi-Tzu Lee Han-Chuan Chuang Chien-Pei Chen Chi-Ling Chang Te-Li Chen Po-Liang Lu Po-Ren Hsueh Chang-Phone Fung

BACKGROUND The systemic surveillance of imipenem-resistant Acinetobacter baumannii (IRAB) from multicenters in Taiwan revealed the emergence of isolates with bla(OXA-72). This study described their genetic makeup, mechanism of spread, and contribution to carbapenem resistance. METHODS Two hundred and ninety-one non-repetitive isolates of A. baumannii were collected from 10 teaching hospitals ...

Journal: :Antimicrobial agents and chemotherapy 2007
Wensi S Hu Shu-Man Yao Chang-Phone Fung Yi-Ping Hsieh Chang-Pan Liu Jing-Fang Lin

We investigated the mechanisms involved in imipenem resistance in 23 clinical strains of Acinetobacter baumannii. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) analysis showed the presence of a 30-kDa protein in imipenem-intermediate A. baumannii (IIAB) and imipenem-resistant A. baumannii (IRAB) strains; this protein was almost undetectable in imipenem-susceptible A. baum...

Afsaneh Karmostaji, Mahshid Vahdani, Maryam Ansari, Nahid Moradi, Parivash Davoodian, Sedigheh Javadpour, Shahin Najar Peerayeh,

Introduction: Acinetobacter baumannii is a major cause of nosocomial infections which affect mainly disabled patients in intensive care units. The bacteria may acquire resistance to antibiotics and hence can seriously endanger antibiotic therapy. The most important problem facing treatment of A. baumannii is increasing reports of resistance to a wide range of antibiotics, including carbapenems,...

2014
Hemant P. Yennawar Lee J. Silverberg

The six-membered thia-zine ring in the title compound, C16H15NOS, adopts a half-chair conformation, with the S atom forming the back of the chair. The base of the chair has a slight twist reflected in the r.m.s. deviation (0.0756 Å) of those five atoms from the plane defined by them. The phenyl substituents are almost perpendicular to each other [dihedral angle 87.06 (9)°]. In the crystal, mol-...

Journal: :The Journal of antibiotics 1979
K P Fu H C Neu

The beta-lactamase stability and inhibitory activity of 1-oxa cephalosporin, (6R,7R)-7-[[carboxy(4-hydroxyphenyl)acetyl]amino]-7-methoxy-3-[[(1-methyl-1H-tetrazol-5-yl)thio]methyl]-8-oxo-5-oxa-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, was investigated and compared to that of cefoxitin and cefotaxime. There was no detectable beta-lactamase hydrolysis of 1-oxa cephalosporin, cefotaxime and ...

2015
Michelle Lowings Marthie Magdaleen Ehlers Andries William Dreyer Marleen Magdalena Kock

BACKGROUND Acinetobacter baumannii is an important hospital-acquired pathogen in healthcare facilities that frequently causes bacteraemia and ventilator-associated pneumonia in intensive care units. Acinetobacter baumannii can be isolated from various sites in the hospital environment like medical equipment, bed linen, medical personnel and indwelling catheters. It is difficult to treat A. baum...

2015
A. Orlandi M. Di Salvatore C. Bagalà M. Basso A. Strippoli F. Plastino M.A. Calegari A. Cassano A. Astone C. Barone

INTRODUCTION Oxaliplatin (Oxa) is widely used in metastatic colorectal cancer (mCRC), but currently there are not valid predictors of response to this drug. In the control arms both of OPUS and PRIME studies Oxa seems more active in patients with mCRC with mutated (mt) KRAS than in those with wild type (wt) KRAS. Recently we have retrospectively confirmed this suggestion, therefore we have hypo...

Journal: :The Journal of antimicrobial chemotherapy 2005
Seungok Lee Yeon-Joon Park Myungshin Kim Hae Kyung Lee Kyungja Han Chang Suk Kang Moon Won Kang

OBJECTIVES Recently, resistance to extended-spectrum cephalosporins due to acquired beta-lactamases has been reported in Pseudomonas aeruginosa. The aim of this study was to investigate the prevalence of Ambler class A and D beta-lactamases and their extended-spectrum derivatives and antimicrobial susceptibilities of P. aeruginosa isolated from various parts of Korea. METHODS A total of 252 c...

مقدمه مهم ترین عامل مقاومت به آنتی بیوتیک های خانواده بتالاکتام در اسینتوباکترها، تولید آنزیم های بتالاکتاماز   وسیع الطیف  ( ESBL )می باشد و OXA یکی از شایع ترین این آنزیم ها است.  هدف از این مطالعه تعیین فراوانی بتالاکتامازهای وسیع الطیف (ESBL) تیپهای OXA-2 وOXA-10   در سویه های اسینتوباکتر جدا شده از بیماران شهر زاهدان می باشد. روش کار این مطالعه توصیفی مقطعی بر 100 نمونه اسینتوباکتر که ط...

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