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https://www.readbyqxmd.com/read/28726622/mcr-1-and-blakpc-3-in-escherichia-coli-sequence-type-744-after-meropenem-and-colistin-therapy-portugal
#1
Marta Tacão, Rafael Dos Santos Tavares, Pedro Teixeira, Inês Roxo, Elmano Ramalheira, Sónia Ferreira, Isabel Henriques
Escherichia coli Ec36 was recovered from a patient in Portugal after treatment with meropenem and colistin. Besides an IncF plasmid with Tn1441d-blaKPC-3, already reported in clinical strains in this country, E. coli Ec36 co-harbored an IncX4::mcr-1 gene. Results highlight emerging co-resistance to carbapenems and polymyxins after therapy with drugs from both classes.
August 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28726037/can-a-collaborative-subspecialty-antimicrobial-stewardship-intervention-have-lasting-effects
#2
Kaushal B Shah, Ramzy H Rimawi, Mark A Mazer, Paul P Cook
OBJECTIVE: We previously demonstrated the benefit of direct, daily collaboration between infectious disease (ID) and critical care practitioners (CCP) on guideline adherence and antibiotic use in the medical intensive care unit (MICU). In this post-intervention review, we sought to establish whether the effect on antibiotic use and guideline adherence was sustainable. DESIGN: A retrospective review of 87 patients, admitted to the 24-bed MICU, was done 3 (n = 45) and 6 months (n = 42) after the intervention...
July 19, 2017: Infection
https://www.readbyqxmd.com/read/28725564/post-partum-streptococcal-toxic-shock-syndrome-associated-with-necrotizing-fasciitis
#3
Wei Chuan Chua, Mohd Zulfakar Mazlan, Saedah Ali, Sanihah Che Omar, Wan Mohd Nazaruddin Wan Hassan, S Praveena Seevaunnantum, Rhendra Hardy Mohd Zaini, Mohd Hasyizan Hassan, Alwi Muhd Besari, Zaidah Abd Rahman, Zeti Norfidiyati Salmuna Ayub, Sabrina Abd Ghani, Normalinda Yaacob, Wan Rosilawati Wan Rosli
We report a fatal case of post-partum streptococcal toxic shock syndrome in a patient who was previously healthy and had presented to the emergency department with an extensive blistering ecchymotic lesions over her right buttock and thigh associated with severe pain. The pregnancy had been uncomplicated, and the mode of delivery had been spontaneous vaginal delivery with an episiotomy. She was found to have septicemic shock requiring high inotropic support. Subsequently, she was treated for necrotizing fasciitis, complicated by septicemic shock and multiple organ failures...
2017: IDCases
https://www.readbyqxmd.com/read/28725196/synergistic-effect-of-doripenem-and-cefotaxime-to-inhibit-ctx-m-15-type-%C3%AE-lactamases-biophysical-and-microbiological-views
#4
Lubna Maryam, Asad U Khan
CTX-M-15 type β-lactamase has the ability to hydrolyse cefotaxime, a third generation cephalosporin. The infections caused by multidrug resistant strains, especially CTX-M-15 producing strains are being treated with carbapenem group of β-lactam antibiotics. The objective of the study was to know if cefotaxime in combination with doripenem (carbapemen antibiotic) at very low concentration, inhibits the CTX-M-15 producing bacterial strains. blaCTX-M-15 gene was cloned to express CTX-M-15 enzyme and construct CTX-M-15 producing strain...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28725045/genomic-epidemiology-of-global-klebsiella-pneumoniae-carbapenemase-kpc-producing-escherichia-coli
#5
N Stoesser, A E Sheppard, G Peirano, L W Anson, L Pankhurst, R Sebra, H T T Phan, A Kasarskis, A J Mathers, T E A Peto, P Bradford, M R Motyl, A S Walker, D W Crook, J D Pitout
The dissemination of carbapenem resistance in Escherichia coli has major implications for the management of common infections. bla KPC, encoding a transmissible carbapenemase (KPC), has historically largely been associated with Klebsiella pneumoniae, a predominant plasmid (pKpQIL), and a specific transposable element (Tn4401, ~10 kb). Here we characterize the genetic features of bla KPC emergence in global E. coli, 2008-2013, using both long- and short-read whole-genome sequencing. Amongst 43/45 successfully sequenced bla KPC-E...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28725038/genomic-characterization-of-novel-incfii-type-multidrug-resistant-plasmids-p0716-kpc-and-p12181-kpc-from-klebsiella-pneumoniae
#6
Jiao Feng, Zhe Yin, Qiangyuan Zhao, Yachao Zhao, Defu Zhang, Xiaoyuan Jiang, Weili Wu, Weijun Chen, Hui Wang, Yajun Song, Yigang Tong, Jinglin Wang, Yanjun Li, Dongsheng Zhou
This study aimed to genetically characterize two fully-sequenced novel IncFII-type multidrug resistant (MDR) plasmids, p0716-KPC and p12181-KPC, recovered from two different clinical Klebsiella pneumoniae isolates. p0716-KPC and p12181-KPC had a very similar genomic content. The backbones of p0716-KPC/p12181-KPC contained two different replicons (belonging to a novel IncFII subtype and the Rep_3 family), the IncFIIK and IncFIIY maintenance regions, and conjugal transfer gene sets from IncFIIK-type plasmids and unknown origins...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28724243/extensively-and-multi-drug-resistant-acinetobacter-baumannii-recovered-from-technosol-at-a-dump-site-in-croatia
#7
Jasna Hrenovic, Goran Durn, Martina Seruga Music, Svjetlana Dekic, Tamara Troskot-Corbic, Dijana Skoric
In a karst pit above City of Rijeka in Croatia the hazardous industrial waste was continuously disposed from 1955 to 1990, and later it was periodically used as an illegal dump site. The surface part of a technosol at the edge of dump was analysed mineralogically, geochemically and bacteriologically. From the technosol rich in petroleum hydrocarbons and heavy metals three isolates of Acinetobacter baumannii were recovered. Isolates from technosol shared many features that are previously described for clinically isolates: the affiliation to IC1 and 2, multi-drug resistant (MDR) or extensively drug-resistant (XDR) antibiotic resistance profile, carbapenem resistance mediated by blaOXA72 and blaOXA23 genes, and the expression of virulence factors...
July 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28723468/trends-in-antibiotic-resistance-in-urologic-practice
#8
REVIEW
Hala Kandil, Emma Cramp, Tejal Vaghela
CONTEXT: The significant global upsurge in antimicrobial resistance, particularly among Enterobacteriaceae, represents a serious threat to health care systems. The implications for urologic practice are of particular concern. OBJECTIVE: To review trends in antibiotic resistance in urologic practice. EVIDENCE ACQUISITION: We report current European trends of resistance in Gram-negative uropathogens. EVIDENCE SYNTHESIS: In addition to β-lactam resistance, Gram-negative pathogens are often resistant to multiple drug classes, including aminoglycosides, fluoroquinolones, and carbapenems, commonly used to treat urologic infections...
October 2016: European Urology Focus
https://www.readbyqxmd.com/read/28721477/imipenem-resistant-gram-negative-bacterial-isolates-carried-by-persons-upon-medical-examination-in-korea
#9
So Yeon Kim, Sang Yop Shin, Ji-Young Rhee, Kwan Soo Ko
Carbapenem-resistant Gram-negative bacteria (CR-GNB) have emerged and disseminated worldwide, become a great concern worldwide including Korea. The prevalence of fecal carriage of imipenem-resistant Gram-negative bacteria (IR-GNB) in persons in Korea was investigated. Stool samples were collected from 300 persons upon medical examination. Samples were screened for IR-GNB by using MacConkey agar with 2 μl/ml imipenem. Species were identified by 16S rRNA gene sequence analysis, and antimicrobial susceptibility was determined by the broth microdilution method...
July 18, 2017: Journal of Microbiology / the Microbiological Society of Korea
https://www.readbyqxmd.com/read/28720159/carbapenem-resistant-enterobacteriaceae-a-strategic-roadmap-for-infection-control-corrigendum
#10
(no author information available yet)
No abstract text is available yet for this article.
July 19, 2017: Infection Control and Hospital Epidemiology
https://www.readbyqxmd.com/read/28718958/multiplex-pcr-scheme-for-variant-plasmid-mediated-class-c-%C3%AE-lactamase-typing
#11
Le Van Chuong, Virapong Prachayasittikul, Chartchalerm Isarankura Na Ayudhya, Ratana Lawung
BACKGROUND: An increasing of prevalence and diversification of plasmid-mediated AmpC (pAmpC) has been emerged worldwide. The incidence of pAmpC resulted in increasing β-lactamase production and conferred resistance to almost all β-lactam antibiotics excluding carbapenems. The lack of standard method for pAmpC identification and classification exert a challenge in epidemiological surveillance and infection control practices. METHODS: A robust, single tube multiplex PCR has been developed to classify six different pAmpC groups including CIT (CMY-2 like, LAT and CFE), ECB (ACT, MIR), MOX & CMY-1 like, DHA, ACC, and FOX...
July 18, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28717993/probing-the-binding-affinities-of-imipenem-and-ertapenem-for-outer-membrane-carboxylate-channel-d1-occd1-from-p-aeruginosa-simulation-studies
#12
Kamolrat Somboon, Jitti Niramitranon, Prapasiri Pongprayoon
Pseudomonas aeruginosa is an important nosocomial human pathogen. The major difficulty in the fight against this pathogen is the relative impermeability of its outer membrane (OM). Only specific substrates can penetrate through the OM of P. aeruginosa via substrate-specific porins, so this has become one of the most problematic drug-resistant pathogens. Carbapenems are the most effective drugs for treating P. aeruginosa infections. One such carbapenem that is applied in cases of P. aeruginosa infection is imipenem (IMI), which uses outer membrane carboxylate channel D1 (OccD1) as a point of entry into the pathogen...
August 2017: Journal of Molecular Modeling
https://www.readbyqxmd.com/read/28717075/clinical-characteristics-of-bacteremia-caused-by-extended-spectrum-beta-lactamase-producing-escherichia-coli-at-a-tertiary-hospital
#13
Hiroki Namikawa, Koichi Yamada, Hiroki Fujimoto, Ken-Ichi Oinuma, Yoshihiro Tochino, Yasuhiko Takemoto, Yukihiro Kaneko, Taichi Shuto, Hiroshi Kakeya
Objective In recent years, infection caused by extended-spectrum beta-lactamase (ESBL)-producing organisms has become an important issue. However, comparative studies of the bacteremia caused by ESBL Enterobacteriaceae and non-ESBL Enterobacteriaceae are extremely rare in Japan. This study aimed to assess the risk factors and prognosis of patients with bacteremia due to ESBL Escherichia coli (E. coli). Methods The medical records of 31 patients with ESBL E. coli bacteremia and 98 patients with non-ESBL E. coli bacteremia who had been admitted to Osaka City University Hospital between January 2011 and June 2015 were retrospectively reviewed...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28717037/impact-of-a-carbapenem-antimicrobial-stewardship-program-on-patient-outcomes
#14
Valerie Xue Fen Seah, Rina Yue Ling Ong, Ashley Shi Yuan Lim, Chia Yin Chong, Natalie Woon Hui Tan, Koh Cheng Thoon
Antimicrobial stewardship programs (ASPs) aim to improve appropriate antimicrobials use. However, concerns of the negative consequences from accepting ASP interventions exist, particularly when de-escalation or discontinuation of broad-spectrum antibiotics are recommended. Hence, we sought to evaluate the impact on clinical outcomes when ASP interventions for inappropriate carbapenem use were accepted or rejected by primary providers.We retrospectively reviewed all carbapenem prescriptions deemed inappropriate according to institutional guidelines with ASP interventions between July 2011 and December 2014...
July 17, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28716451/multidrug-resistant-pseudomonas-aeruginosa-lower-respiratory-tract-infections-in-the-intensive-care-unit-prevalence-and-risk-factors
#15
Trang D Trinh, Evan J Zasowski, Kimberly C Claeys, Abdalhamid M Lagnf, Shravya Kidambi, Susan L Davis, Michael J Rybak
Intensive care unit (ICU) admission is a risk for multidrug-resistant (MDR) Pseudomonas aeruginosa, but factors specific to critically ill pneumonia patients are not fully characterized. Objective was to determine risk factors associated with MDR P. aeruginosa pneumonia among ICU patients. This was a retrospective case-control study of P. aeruginosa pneumonia in the ICU; cystic fibrosis and colonizers were excluded. Risk factors included comorbid conditions and prior healthcare exposure (anti-pseudomonal antibiotics, hospitalizations, nursing home, P...
June 19, 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/28716360/comparison-of-synergism-between-colistin-fosfomycin-and-tigecycline-against-extended-spectrum-%C3%AE-lactamase-producing-klebsiella-pneumoniae-isolates-or-with-carbapenem-resistance
#16
Yee-Huang Ku, Chi-Chung Chen, Mei-Feng Lee, Yin-Ching Chuang, Hung-Jen Tang, Wen-Liang Yu
PURPOSE: To investigate the synergistic and bactericidal effects of antimicrobial combinations of any two of colistin, fosfomycin and tigecycline against the nine extended-spectrum β-lactamase (ESBL)-producing Klebsiella pneumoniae (KP) clinical isolates, including 4 carbapenem-susceptible strains and five imipenem and/or meropenem-resistant strains. METHODS: In vitro synergism and bactericidal activity of combination of colistin, fosfomycin and tigecycline were evaluated by time-kill studies in standard inoculum of bacterial densities of a suspension containing 5 × 10(5) CFU/mL by using 1/2× MIC for each alone, and both 1/2× and 1/4× MIC for any two drugs...
July 6, 2017: Journal of Microbiology, Immunology, and Infection, Wei Mian Yu Gan Ran za Zhi
https://www.readbyqxmd.com/read/28716109/clinical-characteristics-and-outcomes-of-pseudomonas-aeruginosa-bacteremia-in-febrile-neutropenic-children-and-adolescents-with-the-impact-of-antibiotic-resistance-a-retrospective-study
#17
Hyo Sup Kim, Bo Kyoung Park, Seong Koo Kim, Seung Beom Han, Jae Wook Lee, Dong-Gun Lee, Nack-Gyun Chung, Bin Cho, Dae Chul Jeong, Jin Han Kang
BACKGROUND: Although the proportion of Pseudomonas aeruginosa infections has reduced after the introduction of antibiotics with anti-pseudomonal effects, P. aeruginosa bacteremia still causes high mortality in immunocompromised patients. This study determined the clinical characteristics and outcomes of P. aeruginosa bacteremia and the antibiotic susceptibilities of strains isolated from febrile neutropenic patients. METHODS: Thirty-one febrile neutropenic children and adolescents with underlying hematologic/oncologic disorders diagnosed with P...
July 17, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28714754/clinical-outcomes-associated-with-carbapenem-resistant-klebsiella-pneumoniae-crkp-in-abdominal-solid-organ-transplant-sot-recipients
#18
Tiffany E Bias, Gregory E Malat, Dong H Lee, Akshay Sharma, Alden M Doyle
No abstract text is available yet for this article.
July 17, 2017: Infectious Diseases
https://www.readbyqxmd.com/read/28713357/extensively-drug-resistant-klebsiella-pneumoniae-causing-nosocomial-bloodstream-infections-in-china-molecular-investigation-of-antibiotic-resistance-determinants-informing-therapy-and-clinical-outcomes
#19
Wenzi Bi, Haiyang Liu, Rhys A Dunstan, Bin Li, Von Vergel L Torres, Jianming Cao, Lijiang Chen, Jonathan J Wilksch, Richard A Strugnell, Trevor Lithgow, Tieli Zhou
The rise in diversity of antimicrobial resistance phenotypes seen in Klebsiella pneumoniae is becoming a serious antibiotic management problem. We sought to investigate the molecular characteristics and clinical implications of extensively drug-resistant (XDR) K. pneumoniae isolated from different nosocomial bloodstream infections (BSIs) patients from July 2013 to November 2015. Even in combination treatment, meropenem did not protect against mortality of BSIs patients (P = 0.015). In contrast, tigecycline in combination with other antimicrobial agents significantly protected against mortality (P = 0...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28711861/healthcare-infrastructure-capacity-to-respond-to-severe-acute-respiratory-infection-sari-and-sepsis-in-vietnam-a-low-middle-income-country
#20
Vu Quoc Dat, Nguyen Thanh Long, Kim Bao Giang, Pham Bich Diep, Ta Hoang Giang, Janet V Diaz
PURPOSE: This study investigated the availability of relevant structural and human resources needed for the clinical management of patients with severe acute respiratory infections and sepsis in critical care units in Vietnam. MATERIAL AND METHODS: A questionnaire survey was conducted by purposive sampling of 128 hospitals (36% of total hospitals in surveyed provinces), including 25 provincial and 103 district level hospitals, from 20 provinces in Vietnam. Data on availability of hospital characteristics, structural resources and health care workers was then analyzed...
July 10, 2017: Journal of Critical Care
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