keyword
MENU ▼
Read by QxMD icon Read
search

NDM-1

keyword
https://www.readbyqxmd.com/read/28081345/growing-oxa-23-type-strains-among-carbapenem-resistant-acinetobacter-baumannii-and-tigecycline-as-an-alternate-combination-therapy
#1
Şerife Altun, Zeliha Koçak Tufan, Belgin Altun, Ufuk Önde, Sami Kınıklı, Ali Pekcan Demiröz
BACKGROUND/AIM: The increasing prevalence and global spread of difficult-to-treat carbapenem-resistant Acinetobacter baumannii has become a serious problem. The aim of this study is to investigate the resistance patterns and tigecycline sensitivity of carbapenem-resistant A. baumannii strains. MATERIALS AND METHODS: Acinetobacter strains that were carbapenem-resistant and collected mainly from intensive care units were included into this study. The antibiotic sensitivity/resistance of the strains to other antibiotics and tigecycline were noted...
December 20, 2016: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28079218/zinc-ion-induced-conformational-changes-in-new-delphi-metallo-%C3%AE-lactamase-1-probed-by-molecular-dynamics-simulations-and-umbrella-sampling
#2
Jianzhong Chen, Jinan Wang, Weiliang Zhu
The hydrolysis of a β-lactam core ring caused by new Delphi metallo-β-lactamase 1 (NDM-1) with the help of two zinc cofactors induces significant resistance toward β-lactam antibiotics. Molecular dynamics (MD) simulations and the umbrella sampling method are integrated to study the conformational change mechanism of NDM-1 mediated by zinc ion binding. The statistical analyses of interaction contacts of the antibiotic ampicillin (AMP) with residues based on MD trajectories suggest that two Zn ions are essential for maintaining the binding of AMP with NDM-1...
January 12, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28069656/characterization-of-brpmbl-the-bleomycin-resistance-protein-associated-with-the-carbapenemase-ndm
#3
Laurent Dortet, Delphine Girlich, Anne-Laure Virlouvet, Laurent Poirel, Patrice Nordmann, Bogdan I Iorga, Thierry Naas
The metallo-β-lactamase NDM-1 is one of the most worrysome resistance determinant that is spreading worldwide spread among Gram-negative bacilli. A bleomycin resistance gene, bleMBL, has been associated quite systematically downstream of the blaNDM-1 gene. Here, we characterized the corresponding protein, BRPMBL, conferring resistance to bleomycin, an antitumoral glycopeptide molecule. We have determined whether the expression of the blaNDM-1-bleMBL operon is inducible in presence of carbapenems and/or bleomycin-like molecules using qRT-PCR, minimal inhibitory concentration determination of imipenem and zeocin, and carbapenemase specific activity assays...
January 9, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28069649/antimicrobial-activity-of-ceftazidime-avibactam-when-tested-against-gram-negative-bacteria-isolated-from-patients-hospitalized-with-pneumonia-in-united-states-medical-centers-2011-2015
#4
Helio S Sader, Mariana Castanheira, Robert K Flamm
Bacterial isolates were collected from patients hospitalized with pneumonia (PHP), including ventilator-associated (VAP), from 76 USA medical centers in 2011-2015. The Gram-negative organisms (n=11,185; including 1,097 from VAP) were tested for susceptibility against ceftazidime-avibactam and comparators by broth microdilution method. β-lactamase-encoding genes were screened using a microarray based assay on selected isolates. Pseudomonas aeruginosa and Klebsiella spp. were the most common Gram-negatives isolated from PHP and VAP...
January 9, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28007519/genetic-characterisation-of-carbapenem-resistant-gram-negative-bacteria-isolated-from-the-university-hospital-mohamed-boudiaf-in-ouargla-southern-algeria
#5
Mounira Yagoubat, Aminata Ould El-Hadj-Khelil, Ali Malki, Sofiane Bakour, Abdelaziz Touati, Jean-Marc Rolain
OBJECTIVES: The aim of this study was to investigate the molecular epidemiology and the genetic support of carbapenem-resistant Enterobacteriaceae and Acinetobacter spp. isolates collected in the University Hospital of Ouargla, southern Algeria. METHODS: A total of 99 Gram-negative bacteria (GNB) were collected from stool samples of colonised patients and from inanimate surfaces in the hospital environment between December 2014 and August 2015. Selected Enterobacteriaceae and Acinetobacter spp...
December 19, 2016: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/27999060/fortuitous-diagnosis-of-ndm-1-producing-acinetobacter-pittii-carriage-in-a-patient-from-france-with-no-recent-history-of-travel
#6
Hélène Pailhoriès, Linda Hadjadj, Rafael Mahieu, Nicolas Crochette, Jean-Marc Rolain, Marie Kempf
No abstract text is available yet for this article.
December 20, 2016: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/27999041/peptide-conjugated-phosphorodiamidate-morpholino-oligomer-ppmo-restores-carbapenem-susceptibility-to-ndm-1-positive-pathogens-in-vitro-and-in-vivo
#7
Erin K Sully, Bruce L Geller, Lixin Li, Christina M Moody, Stacey M Bailey, Amy L Moore, Michael Wong, Patrice Nordmann, Seth M Daly, Carolyn R Sturge, David E Greenberg
OBJECTIVES: The objective of this study was to test the efficacy of an inhibitor of the New Delhi metallo-β- lactamase (NDM-1). Inhibiting expression of this type of antibiotic-resistance gene has the potential to restore antibiotic susceptibility in all bacteria carrying the gene. METHODS: We have constructed a peptide-conjugated phosphorodiamidate morpholino oligomer (PPMO) that selectively inhibits the expression of NDM-1 and examined its ability to restore susceptibility to meropenem in vitro and in vivo RESULTS: In vitro, the PPMO reduced the MIC of meropenem for three different genera of pathogens that express NDM-1...
December 20, 2016: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/27993422/emergence-of-sequence-type-11-klebsiella-pneumoniae-coproducing-ndm-1-and-vim-1-metallo-%C3%AE-lactamases-in-a-greek-hospital
#8
C C Papagiannitsis, E Malli, Z Florou, S Sarrou, J Hrabak, K Mantzarlis, E Zakynthinos, E Petinaki
Sequence type 11 Klebsiella pneumoniae, coproducing NDM-1 and VIM-1 metallo-β-lactamases, were isolated in a Greek hospital. blaNDM-1 was part of a Tn125 derivative, located on an ~90-kb plasmid similar to the NDM-1-encoding plasmid pB-3002cz. blaVIM-1 was located in an In-e541-like integron, carried on a multireplicon (IncA/C and IncR) plasmid of ~180kb.
December 14, 2016: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/27965626/high-prevalence-of-gut-microbiota-colonization-with-broad-spectrum-cephalosporin-resistant-enterobacteriaceae-in-a-tunisian-intensive-care-unit
#9
Elaa Maamar, Sana Ferjani, Ali Jendoubi, Samia Hammami, Zaineb Hamzaoui, Laure Mayonnove-Coulange, Mabrouka Saidani, Aouatef Kammoun, Amel Rehaiem, Salma Ghedira, Mohamed Houissa, Ilhem Boutiba-Ben Boubaker, Amine Slim, Veronique Dubois
Healthcare-associated infections due to cefotaxime-resistant (CTX-R) Enterobacteriaceae have become a major public health threat, especially in intensive care units (ICUs). Often acquired nosocomially, CTX-R Enterobacteriaceae can be introduced initially by patients at admission. This study aimed to determine the prevalence and genetic characteristics of CTX-R Enterobacteriaceae-intestinal carriage in ICU patients, to evaluate the rate of acquisition of these organisms during hospitalization, and to explore some of the associated risk factors for both carriage and acquisition...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27942358/ndm-1-and-rmtc-producing-klebsiella-pneumoniae-isolates-in-turkey
#10
Tulin Guven Gokmen, Togrul Nagiyev, Melda Meral, Cansu Onlen, Farzad Heydari, Fatih Koksal
BACKGROUND: The resistance of aminoglycosides in strains that produce beta-lactamase can be developed through the multidrug resistant encoding genes carried by common plasmids. Recently, the association between 16S rRNA methyltransferase resistance and beta-lactamase enzymes carried by the same plasmids has drawn increased attention from researchers, particularly the association in aminoglycoside-resistant strains with a minimum inhibitory concentration (MIC) of ≥ 256 µg/mL. OBJECTIVES: We aimed to investigate the co-existence of 16S rRNA methyltransferase and beta-lactamase genes in multidrug resistant (MDR) Klebsiella pneumoniae strains isolated from clinical samples...
October 2016: Jundishapur Journal of Microbiology
https://www.readbyqxmd.com/read/27939808/first-report-of-ndm-1-producing-klebsiella-pneumoniae-imported-from-africa-to-italy-evidence-of-the-need-for-continuous-surveillance
#11
Luigi Principe, Carola Mauri, Viola Conte, Beatrice Pini, Tommaso Giani, Gian Maria Rossolini, Francesco Luzzaro
OBJECTIVES: NDM-producing Enterobacteriaceae are considered emergent on the African continent and have been increasingly reported in recent years. In contrast, strains producing NDM-type enzymes have been rarely reported in Italy, usually associated with sporadic cases or small outbreaks. Here we report two cases of infection caused by NDM-1-producing Klebsiella pneumoniae (NDM-KP) in two unrelated patients returned from travel to Egypt. CASE REPORTS: The two patients had been previously hospitalised for a short period in two different Egyptian hospitals...
December 5, 2016: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/27821458/coproduction-of-mcr-1-and-ndm-1-by-colistin-resistant-escherichia-coli-isolated-from-a-healthy-individual
#12
LETTER
Lan-Lan Zhong, Yan-Fen Zhang, Yohei Doi, Xi Huang, Xue-Fei Zhang, Kun-Jiao Zeng, Cong Shen, Sandip Patil, Yong Xing, Yutian Zou, Guo-Bao Tian
No abstract text is available yet for this article.
January 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27809900/significance-of-nucleic-acid-testing-in-diagnosis-and-treatment-of-post-neurosurgical-meningitis-caused-by-multidrug-resistant-acinetobacter-baumannii-a-case-report
#13
Ngo Tat Trung, Trinh Van Son, Dao Thanh Quyen, Dang Thi Viet Anh, Vu Viet Sang, Nguyen Xuan Lam, Nguyen Dang Manh, Vuong Phuc Duong, Bui Tri Cuong, Quyen Dang Tuyen, Nguyen Xuan Chinh, Phan Quoc Hoan, Hoang Van Tong, Christian G Meyer, Le Huu Song
BACKGROUND: Neurosurgery may pose the risk of patients' developing nosocomial meningitis caused by infection with hospital pathogens. Rapid detection of the causative pathogens is essential for selecting the appropriate antibiotic treatment. However, the classical culture-based detection of bacterial infection is time-consuming and often fails to establish the correct diagnosis. Molecular techniques offer improved diagnostic means to guide the proper antibiotic therapy. CASE PRESENTATION: A 32-year-old Vietnamese man underwent neurosurgery and subsequently developed meningitis...
November 3, 2016: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/27807154/detection-of-an-escherichia-coli-sequence-type-167-strain-with-two-tandem-copies-of-blandm-1-in-the-chromosome
#14
Ping Shen, Maoli Yi, Ying Fu, Zhi Ruan, Xiaoxing Du, Yunsong Yu, Xinyou Xie
New Delhi metallo-β-lactamase-1 (NDM-1)-producing Enterobacteriaceae has disseminated rapidly throughout the world and poses an urgent threat to public health. Previous studies confirmed that the blaNDM-1 gene is typically carried in plasmids but rarely in chromosome. We discovered a multidrug-resistant Escherichia coli strain Y5, originating from a urine sample and containing the blaNDM-1 gene, which did not transfer by either conjugation or electrotransformation. We confirmed the possibility of its chromosome location by S1-pulsed-field gel electrophoresis (PFGE) and XbaI-PFGE, followed by Southern blotting...
January 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/27796645/spread-and-exchange-of-bla-ndm-1-in-hospitalized-neonates-role-of-mobilizable-genetic-elements
#15
S Datta, S Mitra, P Chattopadhyay, T Som, S Mukherjee, S Basu
To investigate the mobilizable elements associated with bla NDM-1 in Enterobacteriaceae isolated from septicaemic neonates at a NICU in India, during December, 2008-2011. An attempt was also made to understand whether there was a pattern in the temporal acquisition of bla NDM-1 within the unit. Transferability of carbapenem resistance was tested by conjugation and transformation. Plasmid types and addiction systems were analysed. The genetic background of bla NDM-1 and association with class 1 integron were evaluated by PCR mapping...
October 28, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27795386/evaluation-of-the-carba-np-test-in-oregon-2013
#16
Karim E Morey, Robert Vega, P Maureen Cassidy, Genevieve L Buser, Jaipreet K Rayar, Jeffrey A Myers, Scott J Weissman, Zintars G Beldavs, Christopher D Pfeiffer
Carbapenem-resistant Enterobacteriaceae (CRE) are an urgent public health threat. We evaluated the capacity of the Carba NP test to detect carbapenemase production in 206 isolates: 143 Enterobacteriaceae identified by Oregon's CRE surveillance program in 2013 and 63 known carbapenemase-positive organisms. Overall, test sensitivity and specificity were 89% (59/66 isolates; 95% confidence interval [CI], 81 to 97%) and 100% (140/140 isolates; 95% CI, 98 to 100%), respectively. All KPC, NDM-1, VIM, and IMP producers but no (0/7 isolates) OXA-48-like strains were Carba NP positive prior to a post hoc protocol modification...
January 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27794265/molecular-epidemiology-of-environmental-and-clinical-carbapenemase-producing-gram-negative-bacilli-from-hospitals-in-guelma-algeria-multiple-genetic-lineages-and-first-report-of-oxa-48-in-enterobacter-cloacae
#17
Widad Bouguenoun, Sofiane Bakour, Ahmed Aimen Bentorki, Charbel Al Bayssari, Tarek Merad, Jean-Marc Rolain
This study was designed to investigate environmental colonisation in Algerian hospitals by carbapenem-resistant Gram-negative bacilli (GNB), including molecular characterisation of their resistance, and to perform a comparative molecular analysis between clinical and environmental strains. GNB isolated from hospitalised patients and the hospital environment were identified using microbiological methods and matrix-assisted laser desorption/ionisation time-of-flight mass spectrometry (MALDI-TOF/MS). Antibiotic susceptibility testing was performed by disk diffusion and Etest methods...
December 2016: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/27790412/first-report-of-complete-sequence-of-a-blandm-13-harboring-plasmid-from-an-escherichia-coli-st5138-clinical-isolate
#18
Jingnan Lv, Xiuqin Qi, Dan Zhang, Zhou Zheng, Yuehui Chen, Yinjuan Guo, Shanshan Wang, Liang Chen, Barry N Kreiswirth, Yi-Wei Tang, Zengqiang Chen, Longhua Hu, Liangxing Wang, Fangyou Yu
Since the first report of blaNDM-1, 16 blaNDM variants have been identified among Gram-negative bacteria worldwide. Recently, a novel blaNDM variant, blaNDM-13, was identified in the chromosome of an ST101 Escherichia coli isolate from Nepal. Here we first reported plasmid-mediated blaNDM-13 in a carbapenem-resistant E. coli ST5138 clinical isolate associated with hospital-acquired urinary tract infection from China. blaNDM-13 and blaSHV-12 coexisted on the a ~54 Kb self-transferable plasmid. Compared with NDM-1, NDM-13, NDM-3, and NDM-4 had two amino acid substitutions (D95N and M154L), one amino acid substitution (D95N) and one amino acid substitutions (M154L), respectively...
2016: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/27754764/combination-of-tigecycline-and-levofloxacin-for-successful-treatment-of-nosocomial-pneumonia-caused-by-new-delhi-metallo-%C3%AE-lactamase-1-producing-raoultella-planticola
#19
Zhijie Pan, Rong Liu, Pei Zhang, Hua Zhou, Yiqi Fu, Jianying Zhou
Raoultella planticola is a gram-negative bacterium that rarely causes diseases in humans. Here, we present a case of hospital-acquired pneumonia caused by R. planticola that likely originated in the gastrointestinal tract. To the best of our knowledge, this is the second report describing the detection of the gene New Delhi Metallo-β-lactamase-1 (blaNDM-1) in multidrug-resistant R. planticola. Clinical samples were collected for bacterial culture and antimicrobial susceptibility testing from a patient during hospitalization...
January 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/27733128/nosocomial-outbreak-of-kpc-2-and-ndm-1-producing-klebsiella-pneumoniae-in-a-neonatal-ward-a-retrospective-study
#20
Jing Yu, Kun Tan, Zhihui Rong, Yue Wang, Zhongju Chen, Xuhui Zhu, Li Wu, Li Tan, Wei Xiong, Ziyong Sun, Ling Chen
BACKGROUND: The spread of resistance to carbapenems among Enterobacteriaceae has become a major public health problem in recent years. In this study, we describe an outbreak of Klebsiella pneumoniae in the neonatal ward. First, we aimed to study the drug resistance, genetic relatedness, and transmission mechanism of carbapenem-resistant K. pneumoniae; second, we implemented infection control measures to contain the outbreak. METHODS: We investigated 27 non-repetitive strains isolated from neonates and five strains cultured from around the neonatal ward...
October 12, 2016: BMC Infectious Diseases
keyword
keyword
16404
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"