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https://www.readbyqxmd.com/read/28738348/colistin-resistance-in-kpc-2-and-shv-5-producing-klebsiella-pneumoniae-clinical-isolates-in-bulgaria
#1
Encho Savov, Iva Todorova, Lida Politi, Angelina Trifonova, Maja Borisova, Elena Kioseva, Athanassios Tsakris
BACKGROUND/AIMS: Colistin resistance is increasingly recognized among carbapenemase-producing Klebsiella pneumoniae isolates in several European regions. The current study documents the appearance of colistin resistance among KPC-2 and SHV-5-produning K. pneumoniae strains in Bulgaria. METHODS: Four colistin-resistant K. pneumoniae isolates were recovered from 2 patients hospitalized in the anesthesiology and resuscitation clinic of a tertiary care university hospital in Sofia, Bulgaria...
July 22, 2017: Chemotherapy
https://www.readbyqxmd.com/read/28737463/prevalence-of-a-new-variant-oxa-204-and-oxa-48-carbapenemases-plasmids-encoded-in-klebsiella-pneumoniae-clinical-isolates-in-tunisia
#2
Rym Ouertani, Mariem Ben Jomàa-Jemili, Haythem Gharsa, Anne Limelette, Thomas Guillard, Lucien Brasme, Christophe de Champs, Chedly Chouchani
Carbapenemase-producing Klebsiella pneumoniae strains have emerged as a major problem for healthcare systems. The aim of this study was to determine the role and diversity of plasmids harboring carbapenemases encoding genes from a collection of K. pneumoniae isolates recovered between July 2011 and January 2012, with decreased susceptibility to carbapenems. Imipenem (IPM), ertapenem (ETP), meropenem (MEM), and doripenem (DOR) minimum inhibitory concentrations (MICs) were determined by E-test. Carbapenemase production was detected with the modified Hodge test...
July 24, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28736270/prevalence-of-and-risk-factors-for-carriage-of-carbapenem-resistant-enterobacteriaceae-among-hospitalized-patients-in-japan
#3
Norihisa Yamamoto, Rumiko Asada, Ryuji Kawahara, Hideharu Hagiya, Yukihiro Akeda, Rathina Kumar Shanmuga Kani, Hisao Yoshida, Satomi Yukawa, Kouji Yamamoto, Yoshihiro Takayama, Hiroaki Ohnishi, Takashi Taniguchi, Taro Matsuoka, Katsura Matsunami, Isao Nishi, Tetsuo Kase, Shigeyuki Hamada, Kazunori Tomono
BACKGROUND: The prevalence of carbapenem-resistant Enterobacteriaceae (CRE) has been reported to be lower in Japan than in many other countries. However, extensive surveillance for CRE carriage has not been performed in Japan. AIM: To investigate the prevalence of CRE carriage in Japan among convalescent patients considered to be at high-risk of being CRE carriers using an improved selective culture medium. METHODS: A cross-sectional survey was conducted in 22 acute care hospitals (ACHs) and 21 long-term care hospitals (LTCHs) in northern Osaka from December 2015 to January 2016...
July 20, 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28730149/review-of-antibiotic-resistance-in-the-indian-ocean-commission-a-human-and-animal-health-issue
#4
REVIEW
Noellie Gay, Olivier Belmonte, Jean-Marc Collard, Mohamed Halifa, Mohammad Iqbal Issack, Saindou Mindjae, Philippe Palmyre, Abdul Aziz Ibrahim, Harena Rasamoelina, Loïc Flachet, Laurent Filleul, Eric Cardinale
Antimicrobial resistance (AMR) is a major threat to human, animal health, and environment worldwide. For human, transmission occurred through a variety of routes both in health-care settings and community. In animals, AMR was reported in livestock, pets, and wildlife; transmission of AMR can be zoonotic with the probably most important route being foodborne transmission. The Indian Ocean Commission (IOC), composed of Comoros, Madagascar, Mauritius, Reunion (France), and Seychelles recognized the surveillance of AMR in both animal and human as a main public health priority for the region...
2017: Frontiers in Public Health
https://www.readbyqxmd.com/read/28729267/draft-genome-sequence-of-the-blaoxa-436-and-blandm-1-harboring-shewanella-putrefaciens-sa70-isolate
#5
Robert F Potter, Alaric W D'Souza, Meghan A Wallace, Angela Shupe, Sanket Patel, Danish Gul, Jennie H Kwon, Saadia Andleeb, C A Burnham, Gautam Dantas
We sequenced a carbapenem-resistant Shewanella putrefaciens isolate cultured from the sink handle of a Pakistan hospital room. Assembly annotation indicates that the isolate has a chromosomal blaOXA-436 carbapenemase and a plasmid-borne blaNDM-1 gene. To our knowledge, this is the first report of a Shewanella species harboring blaNDM.
July 20, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28725045/genomic-epidemiology-of-global-klebsiella-pneumoniae-carbapenemase-kpc-producing-escherichia-coli
#6
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/28724459/characteristics-of-enterobacteriaceae-isolates-coharboring-distinct-carbapenemase-genes
#7
Franciéli P Rozales, Otavio A Lovison, Cibele M Magagnin, Amanda S Martins, Marina N Crispim, Alexandre P Zavascki, Afonso L Barth
No abstract text is available yet for this article.
July 20, 2017: Infection Control and Hospital Epidemiology
https://www.readbyqxmd.com/read/28721477/imipenem-resistant-gram-negative-bacterial-isolates-carried-by-persons-upon-medical-examination-in-korea
#8
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/28719354/thymol-and-carvacrol-strongly-inhibit-biofilm-formation-and-growth-of-carbapenemase-producing-gram-negative-bacilli
#9
P Raei, T Pourlak, M Y Memar, N Alizadeh, M Aghamali, E Zeinalzadeh, M Asgharzadeh, H S Kafil
Discovery of novel drugs with new mechanisms of action and without cross-reaction with current therapeutic agents is crucial in the management of infections caused by multi-drug resistant (MDR) bacteria. The aim of the present study was to investigate effects of carvacrol and thymol on biofilm formation and antimicrobial activity against different carbapenemase-producing Gram negative bacilli. The antimicrobial and antibiofilm effect of thymol and carvacrol was investigated against strains harboring different genes related to carbapenemase resistance...
May 20, 2017: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/28717120/new-delhi-metallo-beta-lactamase-ndm-1-producing-klebsiella-pneumoniae-isolated-from-a-burned-patient
#10
Santiago Petersen-Morfin, Paola Bocanegra-Ibarias, Rayo Morfin-Otero, Elvira Garza-González, Hector Raul Perez-Gomez, Esteban González-Diaz, Sergio Esparza-Ahumada, Gerardo León-Garnica, Gabriel Amezcua-Salazar, Eduardo Rodriguez-Noriega
BACKGROUND Infections affecting burn patients are frequently caused by Staphylococcus aureus, Pseudomonas aeruginosa, and Enterobacteriaceae species. Infections with these pathogens have become increasingly difficult to treat due to evolving antibiotic resistance mechanisms, including the production of carbapenemases. CASE REPORT The present case report describes the evolution of a burn patient with polymicrobial healthcare-associated burn infections, including a bloodstream infection due to an emergent multidrug-resistant New Delhi metallo-beta-lactamase (NDM-1)-producing Klebsiella pneumoniae...
July 18, 2017: American Journal of Case Reports
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
#11
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/28712369/a-hospital-based-matched-case-control-study-to-identify-risk-factors-for-clinical-infection-with-oxa-48-producing-klebsiella-pneumoniae-in-rectal-carriers
#12
A Madueño, J Gonzalez Garcia, A Aguirre-Jaime, M Lecuona
Asymptomatic colonisation of the gastrointestinal tract by carbapenemase-producing Enterobacteriaceae is an important reservoir for transmission, which may precede infection. This retrospective observational case-control study was designed to identify risk factors for developing clinical infection with OXA-48-producing Klebsiella pneumoniae in rectal carriers during hospitalisation. Case patients (n = 76) had carbapenemase-producing K. pneumoniae (CPKP) infection and positive rectal culture for CPKP. Control patients (n = 174) were those with rectal colonisation with CPKP but without CPKP infection...
July 17, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28711559/outbreak-of-colistin-resistant-carbapenemase-producing-klebsiella-pneumoniae-in-tunisia
#13
Wejdène Mansour, Marisa Haenni, Estelle Saras, Raoudha Grami, Yosra Mani, Anis Ben Haj Khalifa, Souhail El Atrouss, Mohamed Kheder, Mohamed Fekih Hassen, Noureddine Boujâafar, Olfa Bouallegue, Jean-Yves Madec
OBJECTIVES: Mechanisms of colistin and carbapenem resistance among a collection of Klebsiella pneumoniae isolates recovered in a university hospital in Tunisia were studied. METHODS: In vitro antimicrobial susceptibility testing, S1 nuclease pulsed-field gel electrophoresis (S1-PFGE), Southern blotting and PCR-based replicon typing (PBRT) were performed. Extended-spectrum β-lactamases (ESBLs), carbapenemases, AmpC-type enzymes and mgrB genes were detected by PCR and sequencing...
July 12, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28711441/emergence-of-carbapenem-resistant-acinetobacter-baumannii-st787-in-clinical-isolates-from-blood-in-a-tertiary-teaching-hospital-in-northern-taiwan
#14
Yi-Fan Hu, Charles Jia-Yin Hou, Chien-Feng Kuo, Nai-Yu Wang, Alice Ying-Jung Wu, Ching-Hsiang Leung, Chang-Pan Liu, Hung-I Yeh
BACKGROUND/PURPOSE: The purpose of this study is to investigate the predominant clones of carbapenem-resistant Acinetobacter baumannii (CRAB) in our hospital in Taiwan by pulsed-field gel electrophoresis (PFGE) and multilocus sequence typing (MLST) technique. METHODS: We collected 108 non-duplicate A. baumannii clinical blood isolates from January 2012 to December 2013 in MacKay Memorial Hospital. PFGE and MLST were used for typing the A. baumannii isolates and for investigation of the predominant clones...
June 22, 2017: Journal of Microbiology, Immunology, and Infection, Wei Mian Yu Gan Ran za Zhi
https://www.readbyqxmd.com/read/28711315/characterization-of-mobile-genetic-elements-carrying-vim-1-and-kpc-2-carbapenemases-in-citrobacter-freundii-isolates-in-madrid
#15
Jennifer Villa, David M Arana, Esther Viedma, Dafne Perez-Montarelo, Fernando Chaves
Carbapenemase producing Citrobacter freundii (CPCF) infections are still uncommon in European countries. Here we report a molecular study conducted in a tertiary care facility in southern Madrid, Spain, from 2009 to 2014 to investigate the epidemiology of CPCF. The blaIMP-1,blaIMP-2,blaKPC,blaNDM,blaOXA-48,blaVIM-1 and blaVIM-2 genes were screened by PCR. Molecular typing was carried out by Pulsed-field gel electrophoresis analysis (PFGE) and multilocus sequence typing (MLST). Whole genome sequencing (WGS) was performed to characterize the resistome and the mobile genetic elements associated with the carbapenems resistance of CPCF...
July 8, 2017: International Journal of Medical Microbiology: IJMM
https://www.readbyqxmd.com/read/28709901/multicenter-collaboration-study-on-the-%C3%AE-lactam-resistant-enterobacteriaceae-in-japan-the-65th-anniversary-public-interest-purpose-project-of-the-japanese-society-of-chemotherapy
#16
Yoshikazu Ishii, Kotaro Aoki, Kazuhiro Tateda, Hiroshi Kiyota
This study was conducted using the same method of the "1-day multicenter collaborative research for Clostridium difficile infectious". This surveillance study was performed by 38 participating medical facilities across Japan. Of the 268 fecal specimens collected in this study, 5 (1.9%) carbapenem-resistant Enterobacteriaceae (CRE) were judged carbapenem resistant by the criteria of the Infectious Disease Act, Japan (2 mg/L or more and 64 mg/L or more MICs for imipenem and cefmetazole, respectively). However, no isolate was shown to have a meropenem MIC of 2 mg/L or more...
July 11, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28708476/a-long-term-study-of-the-diversity-of-oxa-48-like-carbapenemase-producing-bacterial-strains-in-infected-patients-and-carriers
#17
Paul-Louis Woerther, Taha Jardak, Inès Ben Hassine, Sébastien Forget, Elisabeth Chachaty, Guillaume Arlet, Dominique Decré
PURPOSE: Since their emergence at the beginning of the century, OXA-48 carbapenemases have spread in the community and in hospitals. To assess the diversity of OXA-48-producing bacterial strains and plasmids in the hospital setting, we studied the strains isolated from patients in three hospitals in the Paris area. MATERIALS AND METHODS: All possible OXA-48-like strains were included in the study. OXA-48-like and extended-spectrum beta-lactamase-encoding genes were identified, and fingerprinting analysis was performed for all Escherichia coli and Klebsiella pneumoniae strains...
July 14, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28708458/effectiveness-of-a-double-carbapenem-regimen-in-a-kpc-producing-klebsiella-pneumoniae-infection-in-an-immunocompromised-patient
#18
Nuria Piedra-Carrasco, Lucia Miguel, Anna Fàbrega, Belén Viñado, David Campany, Alba Mir, María Laura Fox, Benito Almirante, Nieves Larrosa, Isabel Ruiz-Camps, Juan José González-López
The progressive increase of infections produced by extensively drug-resistant carbapenemase-producing Klebsiella pneumoniae (XDR-CPKP) represents an important threat to public health. Unfortunately, optimal therapeutic options are scarce. Retrospective studies have recommended combined therapy with more than one antibiotic and, more recently, a double-carbapenem regimen has been reported to be an effective alternative therapy. Here, we describe an episode of sepsis in an immunocompromised patient after allogeneic hematopoietic stem cell transplantation, caused by an XDR-CPKP...
July 14, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28706391/utility-of-a-novel-chromogenic-medium-as-a-screening-method-in-the-detection-of-carbapenemase-producing-enterobacteriaceae
#19
Anusha Chaturvedi, Gunjiganur Shankarappa Banashankari
INTRODUCTION: With the emergence of multidrug resistant Gram-negative bugs, there is an urgent need for rapid detection of these resistant organisms. AIM: This study was performed to assess the utility of a novel chromogenic medium in the detection of carbapenemase producing Enterobacteriaceae from various clinical specimens. MATERIALS AND METHODS: A total of 202 isolates of Enterobacteriaceae, which were resistant to meropenem (10 μg) disc by standard disc diffusion method, were analyzed over a period of 6 months...
July 2017: Journal of Laboratory Physicians
https://www.readbyqxmd.com/read/28705769/the-plasmid-mediated-fosfomycin-resistance-determinants-and-synergy-of-fosfomycin-and-meropenem-in-carbapenem-resistant-klebsiella-pneumoniae-isolates-in-taiwan
#20
Sung-Pin Tseng, Sheng-Fan Wang, Ling Ma, Ting-Yin Wang, Tsung-Ying Yang, L Kristopher Siu, Yin-Ching Chuang, Pei-Shan Lee, Jann-Tay Wang, Tsu-Lan Wu, Jung-Chung Lin, Po-Liang Lu
BACKGROUND: Epidemiology of fosfomycin susceptibility and the plasmid-mediated fosfomycinase genes of carbapenem-resistant Klebsiella pneumoniae (CRKP) isolates in Taiwan remain unclear. METHODS: 642 CRKP clinical isolates were collected from a nation-wide surveillance study (16 hospitals) in Taiwan in 2012-2013. Antimicrobial susceptibilities were determined. PFGE and MLST determined the clonal relatedness. Carbapenemases and fosfomycinases genes were detected by PCR, and their flanking regions were determined by PCR and sequencing...
June 28, 2017: Journal of Microbiology, Immunology, and Infection, Wei Mian Yu Gan Ran za Zhi
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