نتایج جستجو برای: shv

تعداد نتایج: 1082  

زمینه و اهداف: اشریشیا کلی تولید کننده بتالاکتامازهای وسیع الطیف (ESBLs) به دلیل مقاومت نسبت به آنتی‌بیوتیک­های مختلف مشکلات درمانی فراوانی را ایجاد نموده است. هدف از مطالعه حاضر، بررسی حضور انواع ژن‌های مولد ESBLs در جدایه های بالینی اشریشیاکلی و تعیین الگوی مقاومت آنها در برابر آمیکاسین، سفتریاکسون، ایمی پنم و مروپنم می‌باشد. مواد و روش‌ها: 500 جدایه بالینی اشریشیاکلی طی فروردین 1391 تا اردیب...

Journal: :Journal of clinical microbiology 2003
Annarita Mazzariol Jessica Zuliani Roberta Fontana Giuseppe Cornaglia

We report on the first isolation of an extended-spectrum beta-lactamase-producing Leclercia adecarboxylata strain from the bloodstream in a 58-year-old man with acute myeloid leukemia. The strain, resistant to ceftazidime, cefotaxime, and aztreonam, produces the SHV-12 beta-lactamase, one of the most common variants found in Italian nosocomial isolates of Enterobacteriaceae.

Journal: :Antimicrobial agents and chemotherapy 2009
Patiyan Andersson Tegan Harris Steven Y C Tong Philip M Giffard

Klebsiella pneumoniae isolates frequently contain complex mixtures of bla(SHV) alleles. A high-resolution melting-based method for interrogating the extended-spectrum activity conferring codon 238 and 240 polymorphisms was developed. This detects minority extended-spectrum beta-lactamase-encoding alleles, allows estimation of allele ratios, and discriminates between single and double mutants.

Journal: :Journal of clinical microbiology 2005
Shelley C Rankin Jean M Whichard Kevin Joyce Lynn Stephens Kathleen O'shea Helen Aceto Donald S Munro Charles E Benson

Salmonella enterica serovar Newport MDR-AmpC expressing TEM-1b and extended-spectrum beta-lactamase SHV-12 was isolated from affected animals during an outbreak of salmonellosis that led to a 3-month closure of one of the largest equine hospitals in the United States.

Journal: :Journal of clinical microbiology 1997
P Di Martino D Sirot B Joly C Rich A Darfeuille-Michaud

Klebsiella pneumoniae is an opportunistic gram-negative pathogen involved in outbreaks of nosocomial infections in intensive care units. Strains are resistant to multiple antibiotics, and 15 to 30% of them are also resistant to the broad-spectrum cephalosporins by the production of R plasmid-encoded extended-spectrum beta-lactamases. Because the gastrointestinal tracts of patients have been sho...

Journal: :Clinical cancer research : an official journal of the American Association for Cancer Research 2009
Min Li Yuqing Zhang Uddalak Bharadwaj Qihui Jim Zhai Charlotte H Ahern William E Fisher F Charles Brunicardi Craig D Logsdon Changyi Chen Qizhi Yao

PURPOSE Zinc levels have been correlated with cancer risk, although the role of zinc and zinc transporters in cancer progression is largely unknown. We recently found that a zinc transporter, ZIP4, is overexpressed in pancreatic cancer. In this study, we further deciphered the role that ZIP4 plays in a pancreatic cancer mouse model by silencing ZIP4. EXPERIMENTAL DESIGN ZIP4 stable silencing ...

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 ...

2015
Meryem Iraz Azer Özad Düzgün Cemal Sandallı Mehmet Ziya Doymaz Yasemin Akkoyunlu Ayşegül Saral Anton Y. Peleg Osman Birol Özgümüş Fatih Şaban Beriş Hakan Karaoğlu Ayşegül Çopur Çiçek

BACKGROUND The emergence of carbapenem-resistant Klebsiella pneumoniae poses a serious problem to antibiotic management. We investigated the β-lactamases in a group of carbapenem-resistant K. pneumoniae clinical isolates from Turkey. METHODS Thirty-seven strains of K. pneumoniae isolated from various clinical specimens were analyzed by antimicrobial susceptibility testing, PCR for the detecti...

Journal: :The British journal of dermatology 2015
T Miyake T Yamamoto Y Hirai M Otsuka T Hamada K Tsuji S Morizane D Suzuki Y Aoyama K Iwatsuki

BACKGROUND Epstein-Barr virus (EBV)-associated T/natural-killer lymphoproliferative disorders form a group of diseases that includes classical and systemic hydroa vacciniforme (HV) and hypersensitivity to mosquito bites (HMB). Patients with systemic HV (sHV) and HMB often have a poor prognosis, although little is known about the prognostic factors. OBJECTIVES To elucidate the prognostic facto...

2006
Catherine Chanal Richard Bonnet Frédéric Robin Julien Delmas Maryse Archambaud Cédric Schweitzer

The clinical strain Escherichia coli TO799 was resistant to penicillin-clavulanate combinations and ceftazi-dime and was not reproducibly detected as an extended-spectrum ␤-lactamase (ESBL) according to the standards of the Clinical Laboratory Standards Institute (CLSI; formerly NCCLS) and the national guidelines of the French Society for Microbiology (Comité de l'Antibiogramme de la Société Fr...

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