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https://www.readbyqxmd.com/read/28437228/first-case-of-ndm-1-producing-klebsiella-pneumoniae-in-annaba-university-hospital-algeria
#1
Amel Abderrahim, Nassima Djahmi, Charlotte Pujol, Sabina Nedjai, Mohamed Cherif Bentakouk, Djamila Kirane-Gacemi, Mazouz Dekhil, Albert Sotto, Jean-Philippe Lavigne, Alix Pantel
AIM: The aim of this study was to characterize two carbapenem-resistant Klebsiella pneumoniae isolates recovered from urine samples in a patient hospitalized at Annaba University hospital (Algeria) in 2014. RESULTS: Two K. pneumoniae isolates were studied because they proved resistant to almost all antibiotics tested with a high level resistance to ertapenem (minimum inhibitory concentration = 32 mg/L). The results of modified Hodge test and combined disk test (ROSCO Diagnostica, Taastrup, Denmark) were positive...
February 22, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28435019/epidemiology-and-trends-in-the-antibiotic-susceptibilities-of-gram-negative-bacilli-isolated-from-patients-with-intra-abdominal-infections-in-the-asia-pacific-region-2010-2013
#2
Ya-Ting Chang, Geoffrey Coombs, Thomas Ling, V Balaji, Camilla Rodrigues, Hiroshige Mikamo, Min-Ja Kim, Datin Ganeswrie Rajasekaram, Myrna Mendoza, Thean Yen Tan, Pattarachai Kiratisin, Yuxing Ni, Weinman Barry, Yingchun Xu, Yen-Hsu Chen, Po-Ren Hsueh
This study was conducted to investigate the epidemiology and antimicrobial susceptibility patterns of Gram-negative bacilli (GNB) isolated from intra-abdominal infections (IAIs) in the Asia-Pacific region (APR) from 2010-2013. A total of 17 350 isolates were collected from 54 centres in 13 countries in the APR. The three most commonly isolated GNB were Escherichia coli (46.1%), Klebsiella pneumoniae (19.3%) and Pseudomonas aeruginosa (9.8%). Overall, the rates of extended-spectrum β-lactamase (ESBL)-producing E...
April 20, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28420384/molecular-characteristic-of-mcr-1-producing-escherichia-coli-in-a-chinese-university-hospital
#3
Qing-Wen He, Xiao-Hong Xu, Fang-Jun Lan, Zhi-Chang Zhao, Zhi-Yun Wu, Ying-Ping Cao, Bin Li
BACKGROUND: Colistin has been considered as a last-line treatment option in severe infections caused by multidrug-resistant (MDR) gram-negative pathogens. However, the emergence of the mobile colistin resistance gene (mcr-1) has challenged this viewpoint. The aim of this study is to explore the prevalence of mcr-1 in Escherichia coli (E. coli) in a Chinese teaching hospital, and investigate their molecular characteristics. METHODS: A total of 700 E. coli isolates were used to screen mcr-1 by PCR and sequencing in a Chinese university hospital from August 2014 to August 2015...
April 19, 2017: Annals of Clinical Microbiology and Antimicrobials
https://www.readbyqxmd.com/read/28420242/high-prevalence-of-ndm-metallo-%C3%AE-lactamase-among-esbl-producing-escherichia-coli-%C3%A4-solates
#4
Yeliz Çetinkol, Cemal Sandalli, Mustafa Kerem Çalgin, Arzu Altunçekiç Yildirim, Esma Akyildiz, Esin Karaman, Ayşegül Çopur Çiçek
Resistance to β-lactams in Enterobacteriaceae has been increasing worldwide. This study aimed to determine the frequency of β-lactamase genes and antibiotic resistance rates of 140 extended-spectrum β-lactamase (ESBL)-producing Escherichia coli isolates obtained from urinary tract infection in Ordu Province, Turkey. Isolates were identified by classic methods and by automated system. ESBL production was confirmed by double disk synergy test and antimicrobial susceptibility was investigated by disk diffusion method...
April 19, 2017: Acta Microbiologica et Immunologica Hungarica
https://www.readbyqxmd.com/read/28411078/performance-of-the-xpert-%C3%A2-carba-r-v2-in-the-daily-workflow-of-a-hygiene-unit-in-a-country-with-a-low-prevalence-of-carbapenemase-producing-enterobacteriaceae
#5
Yannick Hoyos, Souad Ouzani, Laurent Dortet, Nicolas Fortineau, Thierry Naas
Early detection of patients colonised with carbapenemase-producing Enterobacteriaceae (CPE) is crucial for implementing proper infection control measures. Here we evaluated the biological performance of the Xpert(®) Carba-R v2 (Cepheid) in the daily workflow of a hygiene unit in a country with a low CPE prevalence. Patients repatriated from countries known for high CPE prevalence or contact patients of a known CPE carrier were targeted as being 'high-risk patients' for CPE carriage. Between September 2015 and March 2016, 241 'high-risk patients' for CPE carriage were screened using the Xpert(®) Carba-R v2 and by plating on chromID(®) CARBA Smart medium (bioMérieux) with and without ertapenem-containing enrichment culture for 24 h...
April 12, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28399424/resistance-among-gram-negative-eskape-pathogens-isolated-from-hospitalized-patients-with-intra-abdominal-and-urinary-tract-infections-in-latin-american-countries-smart-2013-2015
#6
James A Karlowsky, Daryl J Hoban, Meredith A Hackel, Sibylle H Lob, Daniel F Sahm
Gram-negative ESKAPE pathogens (Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacter species) are important etiologic agents of nosocomial infection that are frequently resistant to broad-spectrum antimicrobial agents. Gram-negative ESKAPE pathogens were collected from hospitalized patients in 11 Latin American countries from 2013 to 2015 as part of the Study for Monitoring Antimicrobial Resistance Trends (SMART) global surveillance program. In total, 2113 isolates from intra-abdominal infections (IAI) and 970 isolates from urinary tract infections (UTI) were tested against antimicrobial agents using standardized CLSI broth microdilution methodology...
April 8, 2017: Brazilian Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28373185/enhanced-klebsiella-pneumoniae-carbapenemase-kpc-expression-from-a-novel-tn4401-deletion
#7
Anita Cheruvanky, Nicole Stoesser, Anna E Sheppard, Derrick W Crook, Paul S Hoffman, Erin Weddle, Joanne Carroll, Costi D Sifri, Weidong Chai, Katie Barry, Girija Ramakrishnan, Amy J Mathers
The Klebsiella pneumoniae carbapenemase gene (blaKPC) is typically located within the mobile transposon Tn4401 Enhanced KPC expression has been associated with deletions in the putative promoter region upstream of blaKPC Illumina sequences from blaKPC-positive clinical isolates from a single institution were mapped to a Tn4401b reference sequence, which carries no deletions. The novel isoform Tn4401h (188bp deletion [lsqb]between istB and blaKPC[rsqb]) was present in 14% (39/281) clinical isolates. MICs for Escherichia coli strains containing plasmids with Tn4401a and Tn4401h were more resistant to meropenem (≥16, ≥16), ertapenem (≥8, 4) and cefepime (≥64, 4) than E...
April 3, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28369424/in-vitro-evaluation-of-different-antimicrobial-combinations-against-carbapenemase-producing-klebsiella-pneumoniae-the-activity-of-the-double-carbapenem-regimen-is-related-to-meropenem-mic-value
#8
A Oliva, L Scorzolini, A Cipolla, M T Mascellino, F Cancelli, D Castaldi, A D'Abramo, C D'Agostino, G Russo, M R Ciardi, C M Mastroianni, V Vullo
Objectives and methods: We evaluated the in vitro activity of different antimicrobial combinations with and without colistin against 39 carbapenem-resistant Klebsiella pneumoniae (CR-Kp) strains (colistin + meropenem/doripenem, colistin + tigecycline, colistin + rifampicin, gentamicin + meropenem, gentamicin + tigecycline and the double-carbapenem regimen meropenem + ertapenem) using the chequerboard method. The triple combination colistin + meropenem + tigecycline was also tested...
March 22, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28367024/carba-np-as-a-simpler-rapid-cost-effective-and-a-more-sensitive-alternative-to-other-phenotypic-tests-for-detection-of-carbapenem-resistance-in-routine-diagnostic-laboratories
#9
Shivani Shinde, Rajarshi Gupta, Shweta S Raut, Gita Nataraj, Preeti R Mehta
PURPOSE: Resistance to carbapenems due to carbapenemases has been increasingly noticed in Enterobacteriaceae. Clinical and Laboratory Standards Institute (CLSI) has recommended the latest Carba NP (CNP) test as a confirmatory test for carbapenemase production in Enterobacteriaceae. Low sensitivity of disk diffusion (DD) and modified Hodge test (MHT) may result in missing out of resistant strains which can adversely affect clinical management. The present study compares three phenotypic tests - CNP test, DD, and MHT for detection of carbapenemase production...
April 2017: Journal of Laboratory Physicians
https://www.readbyqxmd.com/read/28365323/pathogenic-potentials-of-aeromonas-species-isolated-from-aquaculture-and-abattoir-environments
#10
Isoken H Igbinosa, Abeni Beshiru, Emmanuel E Odjadjare, Collins N Ateba, Etinosa O Igbinosa
The present study elucidated the presence of antibiotics resistance, virulence genes and biofilm potentials among Aeromonas species isolated from abattoir and aquaculture environments in Benin City, Nigeria. A total of 144 wastewater samples were obtained from two independent aquaculture and abattoir environments between May and October 2016. Aeromonas species were isolated on Glutamate Starch Phenol Red (GSP) agar and confirmed using API 20NE kits. Antimicrobial susceptibility profile of the isolates was carried out using standard disc diffusion assay while biofilm potentials were detected by the microtitre plate method and PCR technique was used to detect antibiotics resistance and virulence gene markers...
March 30, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28326811/combinations-of-avibactam-and-carbapenems-exhibit-enhanced-potencies-against-drug-resistant-mycobacterium-abscessus
#11
Amit Kaushik, Chhavi Gupta, Stefanie Fisher, Elizabeth Story-Roller, Christos Galanis, Nicole Parrish, Gyanu Lamichhane
AIM: The objective of this study was to assess if avibactam, a new β-lactamase inhibitor, can restore the potency of carbapenems, a sub-class of β-lactams, against Mycobacterium abscessus clinical isolates. MATERIALS & METHODS: Twenty-eight M. abscessus clinical isolates that are resistant to multiple drugs currently used to treat its infection were included. MIC of carbapenems alone and in combination with avibactam against these strains were determined. RESULTS: Tebipenem, an oral carbapenem, and ertapenem and panipenem exhibited the greatest shift in MIC when supplemented with avibactam...
February 16, 2017: Future Microbiology
https://www.readbyqxmd.com/read/28324783/recent-updates-of-carbapenem-antibiotics
#12
REVIEW
Mohammed I El-Gamal, Imen Brahim, Noorhan Hisham, Rand Aladdin, Haneen Mohammed, Amany Bahaaeldin
Carbapenems are among the most commonly used and the most efficient antibiotics since they are relatively resistant to hydrolysis by most β-lactamases, they target penicillin-binding proteins, and generally have broad-spectrum antibacterial effect. In this review, we described the initial discovery and development of carbapenems, chemical characteristics, in vitro/in vivo activities, resistance studies, and clinical investigations for traditional carbapenem antibiotics in the market; imipenem-cilastatin, meropenem, ertapenem, doripenem, biapenem, panipenem/betamipron in addition to newer carbapenems such as razupenem, tebipenem, tomopenem, and sanfetrinem...
March 16, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28298454/in-vitro-activity-of-imipenem-against-carbapenemase-positive-enterobacteriaceae-smart-global-surveillance-program-2008-2014
#13
James A Karlowsky, Sibylle H Lob, Krystyna M Kazmierczak, Robert E Badal, Katherine Young, Mary R Motyl, Daniel F Sahm
The Study for Monitoring Antimicrobial Resistance Trends (SMART) global surveillance program collected 103,960 isolates of Enterobacteriaceae from 2008 to 2014. From this isolate collection all ertapenem-non-susceptible isolates (MIC, ≥1 μg/ml; n = 3,428) and 9,371 isolates of Escherichia coli, Klebsiella pneumoniae, Klebsiella oxytoca, and Proteus mirabilis with an ertapenem-susceptible extended-spectrum β-lactamase (ESBL)-positive phenotype were assessed for the presence of common carbapenemase genes using the Check-MDR CT101 microarray (Check-Points, Wageningen, the Netherlands) and published multiplex PCR assays...
March 15, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28288838/routine-ertapenem-prophylaxis-for-transrectal-ultrasound-guided-prostate-biopsy-does-not-select-for-carbapenem-resistant-organisms-a-prospective-cohort-study
#14
Maxim G Bloomfield, Matthew J Page, Alice G McLachlan, Rodney C Studd, Timothy K Blackmore
PURPOSE: Post-transrectal ultrasound-guided prostate biopsy sepsis is an increasing problem in this era of rising antibiotic resistance. Ertapenem prophylaxis has proven very effective at our institution for reducing this, however has raised local and regional antimicrobial stewardship concerns. This study investigated the possible selective effect of single dose ertapenem prophylaxis on fecal colonization with carbapenem-resistant Enterobacteriaceae. MATERIALS AND METHODS: Patients had a rectal swab taken prior to receiving pre-biopsy ertapenem prophylaxis...
March 10, 2017: Journal of Urology
https://www.readbyqxmd.com/read/28274363/treatments-for-hidradenitis-suppurativa
#15
R Kjærsgaard Andersen, Gregor B E Jemec
Hidradenitis suppurativa (HS) is not easily treated. Although not uncommon, HS is often misdiagnosed outside specialized clinics and inappropriately treated as a simple boil or abscess. In recent years, guidelines have been developed on the basis of expert opinion and the available literature. A multifaceted approach is necessary as HS lesions include both inflammation (amenable to medical treatment) as well as fibrosis (amenable to surgery only). The recommended antiinflammatory therapies encompass both antimicrobials and regular anti-inflammatory drugs...
March 2017: Clinics in Dermatology
https://www.readbyqxmd.com/read/28274205/rapid-detection-of-carbapenemase-producing-klebsiella-pneumoniae-strains-derived-from-blood-cultures-by-matrix-assisted-laser-desorption-ionization-time-of-flight-mass-spectrometry-maldi-tof-ms
#16
Christina Sakarikou, Marco Ciotti, Camilla Dolfa, Silvia Angeletti, Cartesio Favalli
BACKGROUND: Carbapenemase-producing Enterobacteriaceae (CPE), particularly carbapenemase-producing Klebsiella pneumoniae isolates, are important causative agents of nosocomial infections associated with significant mortality rates mostly in critical wards. The rapid detection and typing of these strains is critical either for surveillance purposes and to prevent outbreaks and optimize antibiotic therapy. In this study, the MALDI-TOF MS method was used to detect rapidly these isolates from blood cultures (BCs) and to obtain proteomic profiles enable to discriminate between carbapenemase-producing and non-carbapenemase-producing strains...
March 8, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28264855/structural-alteration-of-ompr-as-a-source-of-ertapenem-resistance-in-a-ctx-m-15-producing-escherichia-coli-o25b-h4-st131-clinical-isolate
#17
Hervé Dupont, Pascaline Choinier, David Roche, Sandine Adiba, Megan Sookdeb, Catherine Branger, Erick Denamur, Hedi Mammeri
In this study, an ertapenem-non-susceptible Escherichia coli isolate was investigated to determine the genetic basis for its carbapenem resistance phenotype. This clinical strain was recovered from a patient that received, one year ago, ertapenem to treat a cholangitis due to a carbapenem-susceptible extended-spectrum β-lactamase (ESBL)-producing E. coli isolate. Whole-genome sequencing of these strains was performed using Illumina and single molecule real-time sequencing technologies. It revealed that they belonged to the ST131 clonal group, had the predicted O25b:H4 serotype, and produced the CTX-M-15 and TEM-1 β-lactamases...
March 6, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28264656/antimicrobial-susceptibilities-of-aerobic-and-facultative-gram-negative-bacilli-isolated-from-chinese-patients-with-urinary-tract-infections-between-2010-and-2014
#18
Qiwen Yang, Hui Zhang, Yao Wang, Zhipeng Xu, Ge Zhang, Xinxin Chen, Yingchun Xu, Bin Cao, Haishen Kong, Yuxing Ni, Yunsong Yu, Ziyong Sun, Bijie Hu, Wenxiang Huang, Yong Wang, Anhua Wu, Xianju Feng, Kang Liao, Yanping Luo, Zhidong Hu, Yunzhuo Chu, Juan Lu, Jianrong Su, Bingdong Gui, Qiong Duan, Shufang Zhang, Haifeng Shao, Robert E Badal
BACKGROUND: The objective of this study was to investigate the distribution and susceptibility of aerobic and facultative Gram-negative bacilli isolated from Chinese patients with UTIs collected within 48 h (community acquired, CA) or after 48 h (hospital acquired, HA) of hospital admission. METHODS: From 2010 to 2014, the minimum inhibitory concentrations (MICs) of 12 antibiotics for 4,332 aerobic and facultative Gram-negative bacilli, sampled in 21 hospitals in 16 cities, were determined by the broth microdilution method...
March 6, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28263710/role-of-piperacillin-tazobactam-as-a-carbapenem-sparing-antibiotic-for-treatment-of-acute-pyelonephritis-due-to-extended-spectrum-%C3%AE-lactamase-producing-escherichia-coli
#19
Young Kyung Yoon, Jong Hun Kim, Jang Wook Sohn, Kyung Sook Yang, Min Ja Kim
Extended-spectrum β-lactamase-producing Escherichia coli (ESBL-Ec) is a frequent cause of acute pyelonephritis (APN), requiring carbapenem therapy. However, alternatives to carbapenems are needed due to the emergence of carbapenemase-producing micro-organisms. The purpose of this study was to compare the clinical efficacy of piperacillin/tazobactam (TZP) versus ertapenem in the treatment of adult patients with APN caused by ESBL-Ec. A retrospective observational study of APN caused by ESBL-Ec susceptible to TZP was performed at a university-affiliated hospital in the Republic of Korea between February 2011 and June 2013...
April 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28249572/efficacy-and-safety-of-de-escalation-therapy-to-ertapenem-for-treatment-of-infections-caused-by-extended-spectrum-%C3%AE-lactamase-producing-enterobacteriaceae-an-open-label-randomized-controlled-trial
#20
Pinyo Rattanaumpawan, Peerawong Werarak, Anupop Jitmuang, Pattarachai Kiratisin, Visanu Thamlikitkul
BACKGROUND: Carbapenem antibiotics are considered the treatment of choice for serious extended-spectrum beta-lactamase (ESBL)-producing Gram-negative bacteria (GNB) infections. The study objectives were to evaluate efficacy and safety of de-escalation therapy to ertapenem for treatment of infections caused by extended-spectrum-β-lactamase-producing Enterobacteriaceae. METHODS: We conducted a randomized controlled trial of adult patients with documented ESBL-producing Enterobacteriaceae infections who had received any group 2 carbapenem for less than 96 h...
March 1, 2017: BMC Infectious Diseases
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