keyword
MENU ▼
Read by QxMD icon Read
search

gnb

keyword
https://www.readbyqxmd.com/read/29782539/comparison-of-two-commercial-carbapenemase-gene-confirmatory-assays-in-multiresistant-enterobacteriaceae-and-acinetobacter-baumannii-complex
#1
Stephan Rösner, Kevin Gehlweiler, Uta Küsters, Mathias Kolbert, Kirsten Hübner, Niels Pfennigwerth, Dietrich Mack
Multidrug-resistant Gram-negative bacilli (MDR-GNB) producing carbapenemases are increasing at an alarming speed. Rapid confirmation of carbapenemase type will be an important diagnostic step in clinical microbiology laboratories not only to reduce the risk of transmissions but also for optimising antibiotic therapy in the future. We compared diagnostic reliability of two commercially available molecular assays (Check-Direct CPE vs. AID line probe assay) for detection and typing of carbapenemase genes in 80 well-characterized isolates of MDR-GNB...
2018: PloS One
https://www.readbyqxmd.com/read/29778819/detection-of-tem-and-ctx-m-genes-from-ciprofloxacin-resistant-proteus-mirabilis-and-escherichia-coli-isolated-on-urinary-tract-infections-utis
#2
Govindan Rajivgandhi, Muthuchamy Maruthupandy, Natesan Manoharan
The multidrug resistant Gram negative bacteria (MDRGNB) is an emerging burden and now represents a daily challenge for the management of antimicrobial therapy in healthcare settings. The present study was aimed to detect the prevalence of TEM and CTX-M type genes from GNB on urinary tract infection (UTIs). The ciprofloxacin resistant uropathogens were detected by HEXA UTI 5 disc diffusion method. The phenotypic detection of uropathogens producing extended spectrum beta lactamases (ESBLs) was confirmed by double disc combination (DDCT) and phenotype confirmation methods (PCT)...
May 17, 2018: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29768557/is-it-possible-to-perform-bacterial-identification-and-antimicrobial-susceptibility-testing-with-a-positive-blood-culture-bottle-for-quick-diagnosis-of-bloodstream-infections
#3
Tamily Cristina Lemos, Laura Lúcia Cogo, Adriane Cheschin Maestri, Milena Hadad, Keite da Silva Nogueira
INTRODUCTION: Bloodstream infections can be fatal, and timely identification of the etiologic agent is important for treatment. METHODOLOGY: An alternative method, consisting of direct identification and susceptibility testing of blood culture bottles using the automated VITEK 2® system, was assessed. RESULTS: All 37 of the Gram-negative bacilli (GNB) identifications and 57.1% of the 28 Gram-positive cocci (GPC) identifications matched those obtained with standard methods...
March 2018: Revista da Sociedade Brasileira de Medicina Tropical
https://www.readbyqxmd.com/read/29760961/ctx-m-15-is-established-in-most-multidrug-resistant-uropathogenic-enterobacteriaceae-and-pseudomonaceae-from-hospitals-in-nigeria
#4
David Olusoga Ogbolu, O A Terry Alli, Mark Alexander Webber, Adeolu Sunday Oluremi, Omoboriowo Moses Oloyede
β-Lactam antibiotics are widely used to treat urinary tract infections in Nigeria. This study aimed to determine the presence and characteristics of extended spectrum β-lactamases in commonly isolated uropathogenic Gram-negative bacteria (GNB) in Nigeria. Fifty non-duplicate GNB isolates consisting of Escherichia coli , 19; Klebsiella pneumoniae , 21; and Pseudomonas aeruginosa , 10 were obtained from three tertiary hospitals in Nigeria. The antibiotic susceptibility testing of all isolates to a panel of antibiotics including minimum inhibitory concentrations (MICs) and extended spectrum β-lactamases was determined...
April 2018: European Journal of Microbiology & Immunology
https://www.readbyqxmd.com/read/29751127/temporal-trends-and-patterns-in-antimicrobial-resistant-gram-negative-bacteria-implicated-in-intensive-care-unit-acquired-infections-a-cohort-based-surveillance-study-in-istanbul-turkey
#5
Bulent Durdu, Evangelos I Kritsotakis, Andrew C K Lee, Perihan Torun, Ismail N Hakyemez, Bilge Gultepe, Turan Aslan
OBJECTIVES: This study assessed trends and patterns in antimicrobial resistant intensive care unit (ICU)-acquired infections caused by Gram-negative bacteria (GNB) in Istanbul, Turkey. METHODS: Bacterial culture and antibiotic susceptibility data were collected for all GNB causing nosocomial infections in five adult ICUs of a large university hospital during 2012-2015. Multi-resistance patterns were categorised as multidrug (MDR), extensively-drug (XDR) and pandrug (PDR)-resistance...
May 8, 2018: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/29682287/colonization-sites-in-carriers-of-esbl-producing-gram-negative-bacteria
#6
Joffrey van Prehn, Anna M Kaiser, Suzanne D van der Werff, Rosa van Mansfeld, Christina M J E Vandenbroucke-Grauls
Objective: The distribution of Extended-Spectrum Beta-Lactamase-producing Gram-negative bacteria (ESBL-GNB) colonization sites is relevant for infection control guidelines on detection and follow-up of colonization. We questioned whether it is possible to rely solely on rectal swab culture for follow-up of ESBL-GNB colonization. Methods: We retrospectively assessed ESBL-GNB colonization sites in patients in a tertiary hospital in the Netherlands. The Laboratory Information Management System was queried for all bacterial cultures obtained between January 2012 and August 2016...
2018: Antimicrobial Resistance and Infection Control
https://www.readbyqxmd.com/read/29665289/a-whole-body-physiologically-based-pharmacokinetic-model-for-colistin-and-colistin-methanesulfonate-cms-in-rat
#7
Salim Bouchene, Sandrine Marchand, William Couet, Lena E Friberg, Patrice Gobin, Isabelle Lamarche, Nicolas Grégoire, Sven Björkman, Mats O Karlsson
Colistin is a polymyxin antibiotic used to treat patients infected with multidrug-resistant Gram negative bacteria (MDR-GNB). The objective of this work was to develop a whole-body physiologically based pharmacokinetic (WB-PBPK) model to predict tissue distribution of colistin in rat. The distribution of a drug in a tissue is commonly characterized by its tissue-to-plasma partition coefficient, Kp . Colistin and its prodrug, colistin methanesulfonate (CMS) Kp priors were measured experimentally from rat tissue homogenates or predicted in silico...
April 17, 2018: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/29649276/carbapenem-resistant-gram-negative-pathogens-in-a-german-university-medical-center-prevalence-clinical-implications-and-the-role-of-novel-%C3%AE-lactam-%C3%AE-lactamase-inhibitor-combinations
#8
Juri Katchanov, Lucia Asar, Eva-Maria Klupp, Anna Both, Camilla Rothe, Christina König, Holger Rohde, Stefan Kluge, Florian P Maurer
OBJECTIVES: To determine the spectrum of infections with multidrug-resistant Gram-negative bacteria (MDR-GNB) and the clinical impact of the newly available betalactam/betalactamase inhibitor combinations ceftolozane/tazobactam and ceftazidime/avibactam in a German academic tertiary care center. METHODS: Retrospective analysis. RESULTS: Between September 1, 2015 and August 31, 2016, 119 individual patients (0.22% of all hospital admissions) were colonized or infected with carbapenem-resistant MDR-GNB...
2018: PloS One
https://www.readbyqxmd.com/read/29611447/investigational-drugs-for-the-treatment-of-infections-caused-by-multidrug-resistant-gram-negative-bacteria
#9
Lindsay M Avery, David P Nicolau
Infections caused by multidrug-resistant Gram-negative bacteria (MDR-GNB) are associated with significant mortality and costs. New drugs in development to combat these difficult-to-treat infections primarily target carbapenem-resistant Enterobacteriaceae, MDR Pseudomonas aeruginosa, and MDR Acinetobacter baumannii. Areas covered: The authors summarize in vitro and in vivo efficacy studies, as well as available clinical trial findings, for new agents in development for treatment of infection caused by MDR-GNB...
April 2018: Expert Opinion on Investigational Drugs
https://www.readbyqxmd.com/read/29595093/synergy-of-clavine-alkaloid-chanoclavine-with-tetracycline-against-multi-drug-resistant-e-coli
#10
Gaurav Raj Dwivedi, Anupam Maurya, Dharmendra Kumar Yadav, Vigyasa Singh, Feroz Khan, Mahendra Kumar Gupta, Mastan Singh, Mahendra P Darokar, Santosh Kumar Srivastava
The emergence of multidrug resistance (MDR) in Gram negative bacteria (GNB) and lack of novel classes of antibacterial agents have raised an immediate need to identify antibacterial agents, which can reverse the phenomenon of MDR. The purpose of present study was to evaluate synergy potential and understanding the drug resistance reversal mechanism of chanoclavine isolated from Ipomoea muricata against the multidrug resistant clinical isolate of Escherichia coli (MDREC). Although chanoclavine did not show antibacterial activity of its own, but in combination, it could reduce the minimum inhibitory concentration (MIC) of tetracycline (TET) up to 16 folds...
March 29, 2018: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/29579836/early-bacterial-pneumonia-after-hepatic-transplantation-epidemiologic-profile
#11
J Prieto Amorin, M Lopez, K Rando, J Castelli, J Medina Presentado
BACKGROUND: Postoperative pulmonary complications are major cause of morbidity and mortality in patients receiving liver transplantation (LT), particularly bacterial pneumonia occurring within the first 100 days after transplantation. Our aim in this study was to determine the incidence, microorganisms involved, associated factors, and morbidity of bacterial pneumonia presenting in the first 100 days posttransplant. METHODS: We performed a cohort study in which patients receiving liver transplantation were included prospectively in our national database (Database of Infections in Transplantation of Solid Organs)...
March 2018: Transplantation Proceedings
https://www.readbyqxmd.com/read/29579302/community-acquired-pneumonia-and-gram-negative-bacilli-in-cambodia-incidence-risk-factors-and-clinical-characteristics
#12
Malin Inghammar, Laurence Borand, Sophie Goyet, Blandine Rammaert, Vantha Te, Patrich Lorn Try, Bertrand Guillard, Philippe Buchy, Sirenda Vong, Eap Tek Chheng, Philippe Cavailler, Charles Mayaud, Arnaud Tarantola
Background: In Western settings, community-acquired pneumonia (CAP) due to Gram-negative bacilli (GNB) is relatively rare. Previous studies from Asia, however, indicate a higher prevalence of GNB in CAP, but data, particularly from Southeast Asia, are limited. Methods: This is a prospective observational study of 1451 patients ≥15 y of age with CAP from two hospitals in Cambodia between 2007 and 2010. The proportion of GNB was estimated. Risk factors and clinical characteristics of CAP due to GNB were assessed using logistic regression models...
March 22, 2018: Transactions of the Royal Society of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29556377/effectiveness-of-healthcare-worker-screening-in-hospital-outbreaks-with-gram-negative-pathogens-a-systematic-review
#13
REVIEW
Nikos Ulrich, Petra Gastmeier, Ralf-Peter Vonberg
Background: Identifying the source of an outbreak is the most crucial aspect of any outbreak investigation. In this review, we address the frequently discussed question of whether (rectal) screening of health care workers (HCWs) should be carried out when dealing with outbreaks caused by gram negative bacteria (GNB).A systematic search of the medical literature was performed, including the Worldwide Outbreak Database and PubMed. Outbreaks got included if a HCW was the source of the outbreak and the causative pathogen was an Escherichia coli , Klebsiella spp ...
2018: Antimicrobial Resistance and Infection Control
https://www.readbyqxmd.com/read/29535544/prediction-of-imipenem-resistant-microorganisms-among-the-nosocomial-critically-ill-patients-with-gram-negative-bacilli-septicemia-a-simple-risk-score
#14
I-Ling Chen, Chen-Hsiang Lee, Shih-Wen Ting, Lily Yu-Chin Wang
Objectives: The increasing number of reports on infections due to carbapenem-resistant Gram-negative bacilli (GNB) has raised concerns, because they have complicated empiric or guided antibiotic therapy for critically ill patients. We aimed to develop a scoring system to predict nosocomial imipenem-resistant GNB (IR-GNB) septicemia among the critically ill patients. Materials and methods: The study included critically ill adult patients with nosocomial GNB septicemia at Kaohsiung Chang Gung Memorial Hospital (CGMH) in 2013-2015, and the scoring system for predicting IR-GNB septicemia was developed, followed by prospective validation conducted among patients at Linkou CGMH and Kaohsiung CGMH between January and June, 2016...
2018: Infection and Drug Resistance
https://www.readbyqxmd.com/read/29530879/polycystin-1-loss-of-function-is-directly-linked-to-an-imbalance-in-g-protein-signaling-in-the-kidney
#15
Bo Zhang, Uyen Tran, Oliver Wessely
The development of the kidney relies on the establishment and maintenance of a precise tubular diameter of its functional units, the nephrons. This process is disrupted in polycystic kidney disease (PKD), resulting in dilations of the nephron and renal cyst formation. In the course of exploring G-protein-coupled signaling in the Xenopus pronephric kidney, we discovered that loss of the G-protein α subunit, Gnas, results in a PKD phenotype. Polycystin 1, one of the genes mutated in human PKD, encodes a protein resembling a G-protein-coupled receptor...
March 22, 2018: Development
https://www.readbyqxmd.com/read/29530743/epidemiology-risk-factors-and-outcomes-of-multi-drug-resistant-bloodstream-infections-in-hematopoietic-stem-cell-transplant-recipients-importance-of-previous-gut-colonisation
#16
Aliana Meneses Ferreira, Frederico Moreira, Thais Guimaraes, Fernanda Spadão, Jessica Fernandes Ramos, Marjorie Vieira Batista, Jayr Schmidt Filho, Silvia Figueiredo Costa, Vanderson Rocha
BACKGROUND: Bloodstream infections (BSI) are a major complication in the early phase of a hematopoietic stem cell transplant (HSCT). AIM: To describe the incidence and risk factors for BSI occurring in the pre-engraftment phase of HSCT and its impact on mortality. METHODS: We retrospectively analysed clinical variables of 232 HSCT patients between 2014 and 2015. Univariate Cox regression analyses were performed to test the association between each covariate and the outcome...
March 9, 2018: Journal of Hospital Infection
https://www.readbyqxmd.com/read/29514274/treatment-of-infections-caused-by-multidrug-resistant-gram-negative-bacteria-report-of-the-british-society-for-antimicrobial-chemotherapy-healthcare-infection-society-british-infection-association-joint-working-party
#17
Peter M Hawkey, Roderic E Warren, David M Livermore, Cliodna A M McNulty, David A Enoch, Jonathan A Otter, A Peter R Wilson
The Working Party makes more than 100 tabulated recommendations in antimicrobial prescribing for the treatment of infections caused by multidrug-resistant (MDR) Gram-negative bacteria (GNB) and suggest further research, and algorithms for hospital and community antimicrobial usage in urinary infection. The international definition of MDR is complex, unsatisfactory and hinders the setting and monitoring of improvement programmes. We give a new definition of multiresistance. The background information on the mechanisms, global spread and UK prevalence of antibiotic prescribing and resistance has been systematically reviewed...
March 1, 2018: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/29506460/clinical-pulmonary-infection-score-and-a-spot-serum-procalcitonin-level-to-guide-discontinuation-of-antibiotics-in-ventilator-associated-pneumonia-a-study-in-a-single-institution-with-high-prevalence-of-nonfermentative-gram-negative-bacilli-infection
#18
Phunsup Wongsurakiat, Sirapat Tulatamakit
Background We wanted to determine the impact of combined Clinical Pulmonary Infection Score (CPIS) and a spot serum procalcitonin (PCT)-guided protocol to shorten the duration of antibiotic treatment in patients with ventilator-associated pneumonia (VAP), mainly caused by nonfermentative gram-negative bacilli (NF-GNB). Methods Patients with VAP who received appropriate antibiotics for 7 days, temperature ⩽ 37.8°C, without shock, and CPIS ⩽ 6 were allocated to the PCT group or conventional group according to the treating physicians' decisions...
January 2018: Therapeutic Advances in Respiratory Disease
https://www.readbyqxmd.com/read/29501780/clinical-impact-of-pretransplant-multidrug-resistant-gram-negative-colonization-in-autologous-and-allogeneic-hematopoietic-stem-cell-transplantation
#19
Alessandra Forcina, Francesca Lorentino, Vincenzo Marasco, Chiara Oltolini, Magda Marcatti, Raffaella Greco, Maria Teresa Lupo-Stanghellini, Matteo Carrabba, Massimo Bernardi, Jacopo Peccatori, Consuelo Corti, Fabio Ciceri
Multidrug-resistant Gram-negative bacteria (MDR-GNB) are an emerging cause of morbidity and mortality after hematopoietic stem cell transplantation (HSCT). Three-hundred forty-eight consecutive patients transplanted at our hospital from July 2012 to January 2016 were screened for a pretransplant MDR-GNB colonization and evaluated for clinical outcomes. A pretransplant MDR-GNB colonization was found in 16.9% of allo-HSCT and in 9.6% of auto-HSCT recipients. Both in auto- and in allo-HSCT, carriers of a MDR-GNB showed no significant differences in overall survival (OS), transplant-related mortality (TRM), or infection-related mortality (IRM) compared with noncarriers...
March 2, 2018: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29499313/multivariate-pattern-analysis-for-meg-a-comparison-of-dissimilarity-measures
#20
Matthias Guggenmos, Philipp Sterzer, Radoslaw Martin Cichy
Multivariate pattern analysis (MVPA) methods such as decoding and representational similarity analysis (RSA) are growing rapidly in popularity for the analysis of magnetoencephalography (MEG) data. However, little is known about the relative performance and characteristics of the specific dissimilarity measures used to describe differences between evoked activation patterns. Here we used a multisession MEG data set to qualitatively characterize a range of dissimilarity measures and to quantitatively compare them with respect to decoding accuracy (for decoding) and between-session reliability of representational dissimilarity matrices (for RSA)...
June 2018: NeuroImage
keyword
keyword
109801
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"