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New delhi metallo

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https://www.readbyqxmd.com/read/28087620/e152a-substitution-drastically-affects-ndm-5-activity
#1
Gaurav Kumar, Bagre Issa, Debasish Kar, Sarmistha Biswal, Anindya S Ghosh
New Delhi Metallo beta-lactamase (NDM) is of significant public health concern due to its enormous potential to hydrolyse all major beta-lactams including carbapenems. Amino acid substitutions outside the active site reportedly affect NDM beta-lactamase activities. Here, the effect of amino acid substitutions in the possible omega-like loop region of NDM-5 has been elucidated. Overall, three substitution mutations near active site of NDM-5 were done, namely, E152A, S191A, and D223A and subsequently, the change in antimicrobial resistance was monitored upon expressing each mutant in a suitable host...
January 12, 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/28087584/emergence-of-klebsiella-variicola-positive-for-ndm-9-a-variant-of-new-delhi-metallo-%C3%AE-lactamase-in-an-urban-river-in-south-korea
#2
Doris Y W Di, Jeonghwan Jang, Tatsuya Unno, Hor-Gil Hur
OBJECTIVES: To examine the presence of pathogenic bacteria carrying New Delhi metallo-β-lactamase in the environment and to characterize the genome structures of these strains. METHODS: Phenotypic screening of antimicrobial susceptibility and WGS were conducted on three Klebsiella variicola strains possessing NDM-9 isolated from an urban river. RESULTS: Three carbapenem-resistant K. variicola isolated from Gwangju tributary were found to possess blaNDM-9 genes...
January 12, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28081065/notes-from-the-field-pan-resistant-new-delhi-metallo-beta-lactamase-producing-klebsiella-pneumoniae-washoe-county-nevada-2016
#3
Lei Chen, Randall Todd, Julia Kiehlbauch, Maroya Walters, Alexander Kallen
No abstract text is available yet for this article.
January 13, 2017: MMWR. Morbidity and Mortality Weekly Report
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
#4
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/27977640/notes-from-the-field-new-delhi-metallo-%C3%AE-lactamase-producing-carbapenem-resistant-enterobacteriaceae-identified-in-patients-without-known-health-care-risk-factors-colorado-2014-2016
#5
Sarah J Janelle, Alexander Kallen, Tom de Man, Brandi Limbago, Maroya Walters, Alison Halpin, Karen Xavier, Joyce Knutsen, Elizabeth Badolato, Wendy M Bamberg
No abstract text is available yet for this article.
December 16, 2016: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/27934850/erratum-endemic-indian-clones-of-klebsiella-pneumoniae-harbouring-new-delhi-metallo-beta-lactamase-1-on-a-hybrid-plasmid-replicon-type-a-case-of-changing-new-delhi-metallo-beta-lactamase-plasmid-landscapes-in-india
#6
(no author information available yet)
[This corrects the article DOI: 10.4103/0255-0857.188314.].
October 2016: Indian Journal of Medical Microbiology
https://www.readbyqxmd.com/read/27934829/does-the-presence-of-klebsiella-pneumoniae-carbapenemase-and-new-delhi-metallo-%C3%AE-lactamase-1-genes-in-pathogens-lead-to-fatal-outcome
#7
P Mathur, S Sagar, S Kumar, V Sharma, D Gupta, S Lalwani, R Rani, A Muruganantham
INTRODUCTION: Infections due to multidrug-resistant (MDR) pathogens are a medical challenge. There is considerable apprehension among clinicians regarding pathogens reported as carrying New Delhi metallo-β-lactamase-1 (NDM) and Klebsiella pneumoniae carbapenemase (KPC) genes from their patients. In the face of extremely high rates of antimicrobial resistance, it is essential to gauge the clinical significance of isolation of pathogens carrying these genes from clinical samples. This study compares the outcome of patients infected with pathogens carrying NDM/KPC genes versus those without these genes...
October 2016: Indian Journal of Medical Microbiology
https://www.readbyqxmd.com/read/27894674/emergence-of-plasmid-mediated-colistin-resistance-and-new-delhi-metallo-%C3%AE-lactamase-genes-in-extensively-drug-resistant-escherichia-coli-isolated-from-a-patient-in-thailand
#8
Wantana Paveenkittiporn, Anusak Kerdsin, Sukanya Chokngam, Charatdao Bunthi, Somchai Sangkitporn, Christopher J Gregory
We reported a case of Escherichia coli with colistin resistance and an extensively drug-resistant phenotype. Molecular analysis revealed that the isolate carried mcr-1 and multiple β-lactamase genes includingblaNDM1, blaCTX-M-15, blaTEM1, and blaCMY-2. This is the first report of a clinical mcr-1 isolate in Thailand highlighting the urgent need for a comprehensive antimicrobial resistance containment strategy to prevent further spread.
February 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/27825605/antimicrobial-resistance-in-enterobacteriaceae-in-brazil-focus-on-%C3%AE-lactams-and-polymyxins
#9
REVIEW
Jorge Luiz Mello Sampaio, Ana Cristina Gales
During the last 30 years there has been a dissemination of plasmid-mediated β-lactamases in Enterobacteriaceae in Brazil. Extended spectrum β-lactamases (ESBL) are widely disseminated in the hospital setting and are detected in a lower frequency in the community setting. Cefotaximases are the most frequently detected ESBL type and Klebsiella pneumoniae is the predominant species among ESBL producers. Klebsiella pneumoniae carbapenemase-producing Enterobacteriaceae became widely disseminated in Brazil during the last decade and KPC production is currently the most frequent resistance mechanism (96...
December 2016: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
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
#10
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/27754764/combination-of-tigecycline-and-levofloxacin-for-successful-treatment-of-nosocomial-pneumonia-caused-by-new-delhi-metallo-%C3%AE-lactamase-1-producing-raoultella-planticola
#11
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/27737785/detection-of-carbapenemase-activity-in-enterobacteriaceae-using-lc-ms-ms-in-comparison-with-the-neo-rapid-carb-kit-using-direct-visual-assessment-and-colorimetry
#12
Charlotte A Huber, Hanna E Sidjabat, Hosam M Zowawi, David Kvaskoff, Sarah Reed, John F McNamara, Kate L McCarthy, Patrick Harris, Benjamin Toh, Alexander M Wailan, David L Paterson
It has been described that the sensitivity of the Carba NP test may be low in the case of OXA-48-like carbapenamases and mass spectrometry based methods as well as a colorimetry based method have been described as alternatives. We evaluated 84 Enterobacteriaceae isolates including 31 OXA-48-like producing isolates and 13 isolates that produced either an imipenemase (IMP; n=8), New Delhi metallo-β-lactamase (NDM; n=3), or Klebsiella pneumoniae carbapenemase (KPC; n=2), as well as 40 carbapenemase negative Enterobacteriaceae isolates...
October 11, 2016: Journal of Microbiological Methods
https://www.readbyqxmd.com/read/27714593/emergence-of-new-delhi-metallo-beta-lactamase-1-and-other-carbapenemase-producing-acinetobacter-calcoaceticus-baumannii-complex-among-patients-in-hospitals-in-ha-noi-viet-nam
#13
D N Tran, H H Tran, M Matsui, M Suzuki, S Suzuki, K Shibayama, T D Pham, T T Van Phuong, D A Dang, H S Trinh, C T Loan, L T V Nga, H R van Doorn, H F L Wertheim
Acinetobacter baumannii is an important cause of multidrug-resistant hospital acquired infections in the world. Here, we investigate the presence of NDM-1 and other carbapenemases among carbapenem-resistant A. baumannii isolated between August 2010 and December 2014 from three large hospitals in Hanoi, Vietnam. We identified 23/582 isolates (4 %) (11 from hospital A, five from hospital B, and seven from hospital C) that were NDM-1 positive, and among them 18 carried additional carbapenemase genes, including seven isolates carrying NDM-1, IMP-1, and OXA-58 with high MICs for carbapenems...
October 6, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27685673/emerging-new-delhi-metallo-%C3%AE-lactamase-1-type-producing-gram-negative-bacteria-isolated-from-cairo-university-pediatric-hospital-cairo-egypt
#14
Mona Wassef, Mona Abdelhaleim, Doaa Ghaith, Yasmin El-Mahdy
New Delhi metallo-β-lactamase (NDM) compromises the efficacy of almost all β-lactam antibiotics, including carbapenems. This study aimed to screen for the blaNDM-1-type gene and NDM-1-type carbapenemase production among Gram-negative bacteria in Cairo University Pediatric Hospital (Cairo, Egypt). Among 382 Gram-negative clinical isolates collected over the period October 2013 to May 2014, 100 clinical isolates showing reduced carbapenem (imipenem and meropenem) susceptibility were included in this study. Initial phenotypic screening for NDM enzyme production was performed by Etest for metallo-β-lactamases (EMBL)...
December 2016: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/27668722/effect-of-single-dose-carbapenem-exposure-on-transcriptional-expression-of-blandm-1-and-mexa-in-pseudomonas-aeruginosa
#15
Debarati Choudhury, Deepjyoti Paul, Anindya Sundar Ghosh, Anupam Das Talukdar, Manabendra Dutta Choudhury, Anand Prakash Maurya, Debadatta Dhar Chanda, Atanu Chakravarty, Amitabha Bhattacharjee
The therapeutic option of a carbapenem antibiotic is compromised in Pseudomonas aeruginosa owing both to acquired and intrinsic resistance mechanisms. In recent years, New Delhi metallo-β-lactamase has been the focus as a predominant carbapenem resistance determinant. However, it is unclear which of the mechanisms might be adopted by a P. aeruginosa strain possessing both blaNDM-1 and an overexpressed MexAB-OprM system during carbapenem therapy. This study investigated the interplay of both mechanisms in clinical isolates of P...
December 2016: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/27649032/carbapenem-resistance-in-clonally-distinct-clinical-strains-of-vibrio-fluvialis-isolated-from-diarrheal-samples
#16
Goutam Chowdhury, Gururaja Perumal Pazhani, Anirban Sarkar, Krishnan Rajendran, Asish K Mukhopadhyay, Mihir K Bhattacharya, Amit Ghosh, Thandavarayan Ramamurthy
Carbapenems have been used for many years to treat severe nosocomial Enterobacteriaceae infections. The spread of resistance to these drugs among other bacterial families is an emerging problem worldwide, mostly caused by New Delhi metallo-β-lactamase (NDM-1). We screened for the prevalence of NDM-1-expressing enteric pathogens from hospitalized patients with acute diarrhea in Kolkata, India, and identified 27 Vibrio fluvialis-harboring blaNDM-1 (NDM-VF) strains. These isolates were also resistant to all the tested antimicrobial drugs except doxycycline...
October 2016: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/27624962/aryl-alkyl-lysines-membrane-active-small-molecules-active-against-murine-model-of-burn-infection
#17
Chandradhish Ghosh, Goutham B Manjunath, Mohini M Konai, Divakara S S M Uppu, Krishnamoorthy Paramanandham, Bibek R Shome, Raju Ravikumar, Jayanta Haldar
Infections caused by drug-resistant Gram-negative pathogens continue to be significant contributors to human morbidity. The recent advent of New Delhi metallo-β-lactamase-1 (blaNDM-1) producing pathogens, against which few drugs remain active, has aggravated the problem even further. This paper shows that aryl-alkyl-lysines, membrane-active small molecules, are effective in treating infections caused by Gram-negative pathogens. One of the compounds of the study was effective in killing planktonic cells as well as dispersing biofilms of Gram-negative pathogens...
February 12, 2016: ACS Infectious Diseases
https://www.readbyqxmd.com/read/27624807/an-irish-outbreak-of-new-delhi-metallo-%C3%AE-lactamase-ndm-1-carbapenemase-producing-enterobacteriaceae-increasing-but-unrecognized-prevalence
#18
C O'Connor, M Cormican, T W Boo, E McGrath, B Slevin, A O'Gorman, M Commane, S Mahony, E O'Donovan, J Powell, R Monahan, C Finnegan, M G Kiernan, J C Coffey, L Power, N H O'Connell, C P Dunne
BACKGROUND: Carbapenemase-producing Enterobacteriaceae (CPE) may cause healthcare-associated infections with high mortality rates. New Delhi metallo-β-lactamase-1 (NDM-1) is among the most recently discovered carbapenemases. AIM: To report the first outbreak of NDM-1 CPE in Ireland, including microbiological and epidemiological characteristics, and assessing the impact of infection prevention and control measures. METHODS: This was a retrospective microbiological and epidemiological review...
December 2016: Journal of Hospital Infection
https://www.readbyqxmd.com/read/27600040/molecular-epidemiology-and-genome-dynamics-of-new-delhi-metallo-%C3%AE-lactamase-producing-extraintestinal-pathogenic-escherichia-coli-strains-from-india
#19
Amit Ranjan, Sabiha Shaik, Agnismita Mondal, Nishant Nandanwar, Arif Hussain, Torsten Semmler, Narender Kumar, Sumeet K Tiwari, Savita Jadhav, Lothar H Wieler, Niyaz Ahmed
The global dissemination and increasing incidence of carbapenem-resistant, Gram-negative organisms have resulted in acute public health concerns. Here, we present a retrospective multicenter study on molecular characterization of metallo-β-lactamase (MBL)-producing clinical Escherichia coli isolates recovered from extraintestinal infections in two hospitals in Pune, India. We screened a large sample size of 510 E. coli isolates for MBL production wherein we profiled their molecular determinants, antimicrobial resistance phenotypes, functional virulence properties, genomic features, and transmission dynamics...
November 2016: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27593176/the-global-epidemiology-of-carbapenemase-producing-enterobacteriaceae
#20
David van Duin, Yohei Doi
Carbapenemase-producing Enterobacteriaceae (CPE) are an important and increasing threat to global health. Both clonal spread and plasmid-mediated transmission contribute to the ongoing rise in incidence of these bacteria. Among the 4 classes of β-lactamases defined by the Ambler classification system, the carbapenemases that confer carbapenem resistance in Enterobacteriaceae belong to 3 of them: Class A (K. pneumoniae carbapenemases, KPC), Class B (metallo-β-lactamases, MBL including New Delhi metallo-β-lactamases, NDM) and Class D (OXA-48-like carbapenemases)...
August 11, 2016: Virulence
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