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https://www.readbyqxmd.com/read/28643488/multidrug-resistance-mechanisms-of-carbapenem-resistant-klebsiella-pneumoniae-strains-isolated-in-chongqing-china
#1
Jinrong Yan, Shuli Pu, Xiaojiong Jia, Xiuyu Xu, Shuangshuang Yang, Jing Shi, Shan Sun, Liping Zhang
BACKGROUND: Carbapenem-resistant Klebsiella pneumoniae (CRKP) is considered a serious global threat. However, little is known regarding the multidrug resistance (MDR) mechanisms of CRKP. This study investigated the phenotypes and MDR mechanisms of CRKP and identified their clonal characteristics. METHODS: PCR and sequencing were utilized to identify antibiotic resistance determinants. Integron gene cassette arrays were determined by restriction fragment length polymorphism (RFLP) analysis...
September 2017: Annals of Laboratory Medicine
https://www.readbyqxmd.com/read/28594635/epidemiology-of-carbapenem-resistant-klebsiella-pneumoniae-bloodstream-infections-in-a-chinese-children-s-hospital-predominance-of-new-delhi-metallo-%C3%AE-lactamase-1
#2
Fang Dong, Ye Zhang, Kaihu Yao, Jie Lu, Lingyun Guo, Shuang Lyu, Ying Yang, Yan Wang, Hongyan Zheng, Wenqi Song, Gang Liu
The spread of carbapenem-resistant Klebsiella pneumoniae (CRKp) has become a significant problem worldwide; however, relevant data in children are limited. We performed a retrospective study to better understand the epidemiology of CRKp bloodstream infections at Beijing Children's Hospital. A total of 164 K. pneumoniae strains were collected from blood cultures between January 2011 and September 2014, of which 52 (31.7%) were CRKp strains. All 52 CRKp strains were multidrug resistant; 46 (88.5%) and 49 (94...
June 8, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28560183/outbreak-by-hypermucoviscous-klebsiella-pneumoniae-st11-isolates-with-carbapenem-resistance-in-a-tertiary-hospital-in-china
#3
Lingling Zhan, Shanshan Wang, Yinjuan Guo, Ye Jin, Jingjing Duan, Zhihao Hao, Jingnan Lv, Xiuqin Qi, Longhua Hu, Liang Chen, Barry N Kreiswirth, Rong Zhang, Jingye Pan, Liangxing Wang, Fangyou Yu
Hypervirulent and multidrug resistant Klebsiella pneumoniae strains pose a significant threat to the public health. In the present study, 21 carbapenem-resistant K. pneumoniae isolates (CRKP) were determined by the string test as hypermucoviscous K. pneumoniae (HMKP), with the prevalence of 15.0% (21/140) among CRKP, and 1.1% (21/1838) among all K. pneumoniae isolates. Among them, 7 (33.3%), and 1 (4.76%) isolate belonged to capsular serotype K20 and K2 respectively, while 13 (61.9%, 13/21) weren't successfully typed by capsular serotyping...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28542162/carbapenem-resistant-klebsiella-pneumoniae-in-barbados-driving-change-in-practice-at-the-national-level
#4
Corey Forde, Bryan Stierman, Pilar Ramon-Pardo, Thais Dos Santos, Nalini Singh
INTRODUCTION: Carbapenem-resistant Klebsiella pneumoniae (CRKP) is of growing concern globally. The risk for transmission of antimicrobial resistant organisms across several continents to the Caribbean is a real one given its tourism industry. After a cluster of cases of CRKP were detected, several studies detailed in this report were initiated to better characterize the problem. METHODS: A hospital-wide point prevalence study and active surveillance were performed at Queen Elizabeth Hospital (QEH) in Barbados in 2013 to assess the prevalence of CRKP infection/colonization...
2017: PloS One
https://www.readbyqxmd.com/read/28533243/roles-of-ramr-and-tet-a-mutations-in-conferring-tigecycline-resistance-in-carbapenem-resistant-klebsiella-pneumoniae-clinical-isolates
#5
Sheng-Kang Chiu, Li-Yueh Huang, Hsi Chen, Yu-Kuo Tsai, Ci-Hong Liou, Jung-Chung Lin, L Kristopher Siu, Feng-Yee Chang, Kuo-Ming Yeh
Tigecycline is regarded as a last-resort treatment for carbapenem-resistant Klebsiella pneumoniae (CRKP) infections, but increasing numbers of tigecycline-resistant K. pneumoniae isolates have been reported. Tigecycline resistance mechanisms are underdetermined in CRKP. This study aimed to elucidate mechanisms underlying tigecycline resistance in 16 tigecycline- and carbapenem-resistant K. pneumoniae (TCRKP) isolates. Mutations in tigecycline resistance determinant genes (ramR, acrR, oqxR, tet(A), tet(L), tet(X), tet(M), rpsJ) were assessed by PCR amplicon sequencing, and mutations in ramR and tet(A) exhibited high prevalences individually (81%) and in combination (63%)...
May 22, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28458051/emergence-and-nosocomial-spread-of-carbapenem-resistant-oxa-232-producing-klebsiella-pneumoniae-in-brunei-darussalam
#6
Muhd Haziq Fikry Abdul Momin, Apostolos Liakopoulos, Lynette M Phee, David W Wareham
OBJECTIVES: Carbapenem-resistant Enterobacteriaceae (CRE) are identified as a major global health concern. The success of CRE is facilitated by the emergence, acquisition and spread of successful clones carrying plasmid-encoded resistance genes. In this study, an outbreak of carbapenem-resistant Klebsiella pneumoniae (CRKP) infections in patients hospitalised in Brunei Darussalam was investigated. METHODS: Over a 3-month period (May-July 2015), five multidrug-resistant K...
June 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28457370/carbapenem-resistant-klebsiella-pneumoniae-infections-early-after-liver-transplantation-a-single-center-experience
#7
E Mazza, M Prosperi, M F Panzeri, R Limuti, M Nichelatti, A De Gasperi
The aims of this study were to define in a cohort of 310 liver transplant recipients, the incidence of post-liver transplantation (LT) non-carbapenem-resistant Klebsiella pneumoniae (CRKP) and CRKP infections, pre- and post-LT CRKP colonization, CRKP-associated mortality, and risk factors for non-CRKP and CRKP infections. Every patient was screened for CRKP immediately before and after LT. The 6-month survival rate was 95%. Fifty-two patients became infected (16.5%): 8 by CRKP (2.5%) and 44 (14%) by a non-CRKP micro-organism...
May 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28450933/retrospective-analysis-of-fosfomycin-combinational-therapy-for-sepsis-caused-by-carbapenem-resistant-klebsiella-pneumoniae
#8
Yun Liao, Guang-Hui Hu, Yun-Fei Xu, Jian-Ping Che, Ming Luo, Hai-Min Zhang, Bo Peng, Xu-Dong Yao, Jun-Hua Zheng, Min Liu
The aim of the present study was to compare the efficacy and safety of fosfomycin combinational therapy with other antibiotics for the treatment of infections caused by carbapenem-resistant Klebsiella pneumoniae (CRKP). This retrospective cohort study examined 104 cases of sepsis caused by CRKP occurring between January 2012 and November 2014 in Shanghai Tenth People's Hospital. Three categories of patient outcome were assessed: Survival/mortality, duration of intensive care unit stays and duration of medical ventilation...
March 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28388651/tigecycline-resistance-among-carbapenem-resistant-klebsiella-pneumoniae-clinical-characteristics-and-expression-levels-of-efflux-pump-genes
#9
Sheng-Kang Chiu, Ming-Chin Chan, Li-Yueh Huang, Yi-Tsung Lin, Jung-Chung Lin, Po-Liang Lu, L Kristopher Siu, Feng-Yee Chang, Kuo-Ming Yeh
OBJECTIVES: Tigecycline is a treatment option for infections caused by carbapenem-resistant Klebsiella pneumoniae (CRKP). Emerging tigecycline resistance in CRKP represents a growing threat. Knowledge of the clinical, microbiological, and molecular characteristics of tigecycline- and carbapenem-resistant Klebsiella pneumoniae (TCRKP) is limited. METHODS: Patients infected with TCRKP were identified from a Taiwanese national surveillance study. Clinical data were collected from medical records...
2017: PloS One
https://www.readbyqxmd.com/read/28362935/evolution-and-transmission-of-carbapenem-resistant-klebsiella-pneumoniae-expressing-the-blaoxa-232-gene-during-an-institutional-outbreak-associated-with-endoscopic-retrograde-cholangiopancreatography
#10
Shangxin Yang, Peera Hemarajata, Janet Hindler, Fan Li, Helty Adisetiyo, Grace Aldrovandi, Robert Sebra, Andrew Kasarskis, Duncan MacCannell, Xavier Didelot, Dana Russell, Zachary Rubin, Romney Humphries
Background: Whole-genome sequencing (WGS) is an emerging and powerful technique by which to perform epidemiological studies in outbreak situations. Methods: WGS was used to identify and evaluate an outbreak of OXA-232-expressing carbapenem-resistant Klebsiella pneumoniae (CRKP) transmitted to 16 patients over the course of 40 weeks via endoscopic retrograde cholangiopancreatography procedures at a single institution. WGS was performed on 32 OXA-232 CRKP isolates (1-7 per patient) and single-nucleotide variants (SNVs) were analyzed, with reference to the index patient's isolate...
April 1, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28356109/systematic-review-and-meta-analysis-of-mortality-of-patients-infected-with-carbapenem-resistant-klebsiella-pneumoniae
#11
REVIEW
Liangfei Xu, Xiaoxi Sun, Xiaoling Ma
PURPOSE: Carbapenem resistant K. pneumoniae (CRKP) has aroused widespread attention owing to its very limited therapeutic options, and this strain has increased rapidly in recent years. Although it is accepted that drug resistance is associated with increased mortality in general, but some other studies found no such relationship. To estimate mortality of patients infected with CRKP in general and analyze factors for mortality of this infection, thus, we conducted this systematic review and meta-analysis...
March 29, 2017: Annals of Clinical Microbiology and Antimicrobials
https://www.readbyqxmd.com/read/28341427/community-onset-carbapenem-resistant-klebsiella-pneumoniae-urinary-tract-infections-in-infancy-following-nicu-hospitalisation
#12
Eleni Vergadi, Maria Bitsori, Sofia Maraki, Emmanouil Galanakis
INTRODUCTION: Urinary tract infection (UTI) is a common bacterial infection in childhood with favourable outcome. However, the recent emergence of UTI caused by multidrug-resistant pathogens, such as carbapenem-resistant Enterobacteriaceae (CRE), has become a great concern worldwide. CRE are mainly responsible for nosocomial infections and community-onset CRE infections in healthy individuals are rare. OBJECTIVES: In this study, we report a series of infants without substantial genitourinary abnormalities that were admitted with community-onset urinary tract infections (UTIs) caused by carbapenem-resistant Klebsiella pneumoniae (CRKP) and we discuss their aetiology...
March 11, 2017: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/28283020/carbapenem-resistant-klebsiella-pneumoniae-in-high-risk-haematological-patients-factors-favouring-spread-risk-factors-and-outcome-of-carbapenem-resistant-klebsiella-pneumoniae-bacteremias
#13
Alessandra Micozzi, Giuseppe Gentile, Clara Minotti, Claudio Cartoni, Saveria Capria, Daniele Ballarò, Stefania Santilli, Emanuele Pacetti, Sara Grammatico, Giampaolo Bucaneve, Robin Foà
BACKGROUND: Carbapenem-resistant Klebsiella pneumoniae (CRKP) spread and infections in patients with haematological malignancies are a serious concern especially in endemic areas. Treatment failures and delay in appropriate therapy for CRKP infections are frequent and the mortality rate associated with CRKP bacteremia in neutropenic haematological patients is reported about 60%. METHODS: Haematological patients harboring CRKP hospitalized between February 2012 and May 2013 in an Italian Teaching hospital were examined...
March 10, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28254253/surveillance-culture-for-multidrug-resistant-gram-negative-bacteria-performance-in-liver-transplant-recipients
#14
Maristela Pinheiro Freire, Isabel Cristina Villela Soares Oshiro, Patrícia Rodrigues Bonazzi, Ligia Câmera Pierrotti, Larissa Marques de Oliveira, Anna Silva Machado, Inneke Marie Van Der Heijdenn, Flavia Rossi, Silvia Figueiredo Costa, Luiz Augusto Carneiro D'Albuquerque, Edson Abdala
BACKGROUND: The prevalence of infection with multidrug-resistant gram-negative bacteria (MDR-GNB) after solid-organ transplantation is increasing. Surveillance culture (SC) seems to be an important tool for MDR-GNB control. The goal of this study was to analyze the performance of SC for MDR-GNB among liver transplant (LT) recipients. METHODS: This was a prospective cohort study involving patients who underwent LT between November 2009 and November 2011. We screened patients for extended spectrum β-lactamase-producing Escherichia coli, extended spectrum β-lactamase-producing Klebsiella pneumoniae, and carbapenem-resistant Enterobacteriaceae, carbapenem-resistant Pseudomonas aeruginosa (CRPA), and carbapenem-resistant Acinetobacter baumannii (CRAB)...
March 1, 2017: American Journal of Infection Control
https://www.readbyqxmd.com/read/28196423/fecal-microbiota-transplantation-is-there-a-role-in-the-eradication-of-carbapenem-resistant-klebsiella-pneumoniae-intestinal-carriage
#15
Ana Ponte, Rolando Pinho, Margarida Mota
The authors present the case of a 66-year-old woman with four hospitalizations due to recurrent Clostridium difficile infection (CDI) non responsive to vancomycin and fidaxomicin. Furthermore, intestinal colonization with carbapenem-resistant Klebsiella pneumoniae (CRKP) was identified after a positive stool culture in a screening routinely performed in our center in patients recently hospitalized.
February 15, 2017: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/28013258/epidemiology-of-carbapenem-resistant-klebsiella-pneumoniae-in-a-network-of-long-term-acute-care-hospitals
#16
Jennifer H Han, Ellie J C Goldstein, Jacqueleen Wise, Warren B Bilker, Pam Tolomeo, Ebbing Lautenbach
Background: The rapid emergence of carbapenem-resistant Klebsiella pneumoniae (CRKP) represents a major public health threat, including in the long-term acute care hospital (LTACH) setting. Our objective in this study was to describe the epidemiologic characteristics of CRKP in a network of US LTACHs. Methods: An observational study was performed among 64 LTACHs from January 2014 to March 2015. Clinical cultures were included, with the first CRKP isolate recovered from each patient per study quarter evaluated...
April 1, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/27980379/epidemiology-and-biomolecular-characterization-of-carbapenem-resistant-klebsiella-pneumoniae-in-an-italian-hospital
#17
REVIEW
M L Cristina, M Sartini, G Ottria, E Schinca, N Cenderello, M P Crisalli, P Fabbri, G Lo Pinto, D Usiglio, A M Spagnolo
OBJECTIVE: To describe the occurrence of CRKP infections in a tertiary care hospital and to analyse the allelic profiles of the clinical strains involved and the most frequent carbapenemases. DESIGN: The study analyzed cases of infection due to CRKP in the period 2013-2014; 147 cases were recorded, most of which (82.31%) were in-hospital infections. SETTING: A hospital in northern Italy. METHODS: We retrospectively collected: data on patient characteristics and the microbiological characteristics of CRKP...
September 2016: Journal of Preventive Medicine and Hygiene
https://www.readbyqxmd.com/read/27942542/carbapenem-resistant-klebsiella-pneumoniae-infection-in-three-new-york-city-hospitals-trended-downwards-from-2006-to-2014
#18
Sun O Park, Jianfang Liu, E Yoko Furuya, Elaine L Larson
BACKGROUND: Carbapenem-resistant Klebsiella pneumoniae (CRKP) infection is a rising public health threat since its first outbreaks in New York City (NYC) in the early 2000s. We investigated annual trends of CRKP infection in hospital-acquired infections (HAIs) and community-onset infections (COIs) treated in 3 NYC hospitals from 2006 to 2014. METHODS: We extracted K pneumoniae infection data including carbapenem susceptibility and anatomical sites, compared clinical characteristics between CRKP and carbapenem-susceptible K pneumoniae infections, and determined CRKP infection proportions in total K pneumoniae infections in HAI and COI to identify statistically significant trends from 2006 to 2014 using the Cochran-Armitage trend test...
October 2016: Open Forum Infectious Diseases
https://www.readbyqxmd.com/read/27940944/colistin-resistance-in-carbapenem-resistant-klebsiella-pneumoniae-laboratory-detection-and-impact-on-mortality
#19
Laura J Rojas, Madiha Salim, Eric Cober, Sandra S Richter, Federico Perez, Robert A Salata, Robert C Kalayjian, Richard R Watkins, Steve Marshall, Susan D Rudin, T Nicholas Domitrovic, Andrea M Hujer, Kristine M Hujer, Yohei Doi, Keith S Kaye, Scott Evans, Vance G Fowler, Robert A Bonomo, David van Duin
Background: Polymyxins including colistin are an important "last-line" treatment for infections caused by carbapenem-resistant Klebsiella pneumoniae (CRKp). Increasing use of colistin has led to resistance to this cationic antimicrobial peptide. Methods: A cohort nested within the Consortium on Resistance against Carbapenems in Klebsiella pneumoniae (CRACKLE) was constructed of patients with infection, or colonization with CRKp isolates tested for colistin susceptibility during the study period of December, 2011 to October, 2014...
March 15, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/27909821/previous-bloodstream-infections-due-to-other-pathogens-as-predictors-of-carbapenem-resistant-klebsiella-pneumoniae-bacteraemia-in-colonized-patients-results-from-a-retrospective-multicentre-study
#20
MULTICENTER STUDY
D R Giacobbe, V Del Bono, P Bruzzi, S Corcione, M Giannella, A Marchese, L Magnasco, A E Maraolo, N Pagani, C Saffioti, S Ambretti, C S Cardellino, E Coppo, F G De Rosa, P Viale, C Viscoli
INTRODUCTION: the purpose of this retrospective multicenter study was to assess whether the risk of developing bloodstream infections (BSI) due to carbapenem-resistant Klebsiella pneumoniae (CRKP) in colonized patients is influenced by the occurrence of BSI due to other pathogens. METHODS: from January 2012 to March 2014, all patients with at least one rectal swab positive for CRKP and at least 30 days of previous hospital stay were included in the study. The primary outcome measure was CRKP BSI, defined as a time-to-event endpoint...
April 2017: European Journal of Clinical Microbiology & Infectious Diseases
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