نتایج جستجو برای: shv

تعداد نتایج: 1082  

Journal: :Antimicrobial agents and chemotherapy 1999
L Martínez-Martínez A Pascual S Hernández-Allés D Alvarez-Díaz A I Suárez J Tran V J Benedí G A Jacoby

Two clinical isolates of extended-spectrum beta-lactamase (ESBL)-producing Klebsiella pneumoniae were noted to be less susceptible than expected to imipenem. Both were missing outer membrane proteins that serve as channels for antibiotic entry. The role of beta-lactamase in resistance was investigated by eliminating the original ESBL and introducing plasmids encoding various ESBLs and AmpC beta...

Journal: :Journal of clinical microbiology 2005
Dóra Szabó Robert A Bonomo Fernanda Silveira A William Pasculle Carla Baxter Peter K Linden Andrea M Hujer Kristine M Hujer Kathleen Deeley David L Paterson

Cefepime is a potentially useful antibiotic for treatment of infections with Enterobacter cloacae. However, in our institution the MIC(90) for E. cloacae bloodstream isolates is 16 microg/ml. PCR amplification of bla genes revealed that one-third (15/45) of E. cloacae bloodstream isolates produced SHV-type extended-spectrum beta-lactamases (ESBLs) in addition to hyperproduction of AmpC-type bet...

Journal: :The Southeast Asian journal of tropical medicine and public health 2007
Aroonwadee Chanawong Aroonlug Lulitanond Wanlop Kaewkes Viraphong Lulitanond Sukanya Srigulbutr Preecha Homchampa

This study presents updates on molecular epidemiology of extended-spectrum beta-lactamases (ESBLs) in clinical isolates of Enterobacteriaceae from Srinagarind Hospital, Khon Kaen University, Thailand. All isolates were screened for the presence of ESBL genes, bla(TEM), bla(SHV), bla(VEB) and bla(CTX-M), using PCR followed by nucleotide sequence determination. The results revealed that beta-lact...

jalali Dizage, lida, Nahaei, Mohammad Reza, Sadegi, Javid,

Background & objectives: Urinary tract infection (UTI) is one of the most common types of hu­man infections and Escherichia coli and Klebsiella pneumonia are the main causes of urinary tract infection among the gram negative bacteria. The prevalence of extended-spectrum β-lactamases (ESBLs) among these bacteria and hence resistant strains to β-lactam antibiotics have increased in recent decades...

2012
F Eftekhar M Rastegar M Golalipoor N MansourSamaei

BACKGROUND Resistance to contemporary broad-spectrum β-lactam antibiotics mediated by extended-spectrum β-lactamases (ESBLs) is increasing worldwide. Klebsiella pneumoniae, an important cause of nosocomial and community acquired urinary tract infections has rapidly become the most common ESBL producing organism. We examined ESBL production in urinary isolates of K. pneumoniae in relation to the...

2008
Kyoung Ho Roh Young Uh Jae-Seok Kim Han-Sung Kim Dong Hoon Shin Wonkeun Song

PURPOSE Coexistence of different classes of beta-lactamases in a single bacterial isolate may pose diagnostic and therapeutic challenges. We investigated a spread of Klebsiella pneumoniae isolates co-producing an AmpC beta-lactamase and an extended-spectrum beta-lactamase (ESBL) in a university hospital. MATERIALS AND METHODS Over a three-month period, a total of 11 K. pneumoniae isolates, wh...

Journal: :Antimicrobial agents and chemotherapy 1995
P A Bradford C Urban A Jaiswal N Mariano B A Rasmussen S J Projan J J Rahal K Bush

Four ceftazidime-resistant Escherichia coli strains were isolated from elderly nursing home patients in a New York hospital during 1993. Strains MCQ-2, MCQ-3, and MCQ-4 were determined to be identical by pulsed-field gel electrophoresis and plasmid profiles, whereas strain MCQ-1 was unique. Strain MCQ-1 was determined to produce a TEM-10 beta-lactamase. Strains MCQ-2, MCQ-3, and MCQ-4 were also...

Journal: :Journal of clinical microbiology 2009
Azita Leavitt Inna Chmelnitsky Raul Colodner Itzhak Ofek Yehuda Carmeli Shiri Navon-Venezia

Ertapenem resistance in Klebsiella pneumoniae is rare. We report on an ertapenem-nonsusceptible phenotype among 25 out of 663 (3.77%) extended-spectrum-beta-lactamase (ESBL)-producing K. pneumoniae isolates in a multicenter Israeli study. These isolates originated from six different hospitals and were multiclonal, belonging to 12 different genetic clones. Repeat testing using Etest and agar dil...

2015
Natasha Bhutani Chithra Muraleedharan Deepa Talreja Sonia Walia Rana Sandeep Walia Ashok Kumar Satish K Walia

Antibiotic resistance in bacteria is a global problem exacerbated by the dissemination of resistant bacteria via uncooked food, such as green leafy vegetables. New strains of bacteria are emerging on a daily basis with novel expanded antibiotic resistance profiles. In this pilot study, we examined the occurrence of antibiotic resistant bacteria against five classes of antibiotics on iceberg let...

Journal: :International journal of microbiology 2016
El Sayed Hamdy Mohammed Ahmed Elsadek Fakhr Hanan Mohammed El Sayed Said Abd Elmohsen Al Johery Wesam Abdel Ghani Hassanein

Carbapenem-resistant Gram-negative bacilli resulting from β-lactamases have been reported to be an important cause of nosocomial infections and are a critical therapeutic problem worldwide. This study aimed to describe the prevalence of imipenem-resistant Gram-negative bacilli isolates and detection of bla VIM, bla TEM, bla SHV, bla CTX-M-1, and bla CTX-M-9 genes in these clinical isolates in E...

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