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https://www.readbyqxmd.com/read/29144958/isolation-of-blandm-producing-enterobacteriaceae-in-a-public-hospital-in-salvador-bahia-brazil
#1
Maria Goreth Barberino, Silvia de Araujo Cruvinel, Célio Faria, Marco Aurélio Salvino, Márcio Oliveira
Carbapenemases have great importance in the global epidemiological scenario since infections with carbapenemase-producing bacteria are associated with high mortality, especially in hospitalized patients in intensive care units. This study describes two microorganisms producers of the New Delhi Metallo-b-lactamase (NDM), Klebsiella pneumoniae and Citrobacter freundii, from two patients admitted to a public hospital in Salvador, Bahia. These are the first clinical cases of NDM described in microorganisms in the north and northeast Brazil...
November 13, 2017: Brazilian Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29138303/cxc-chemokines-exhibit-bactericidal-activity-against-multidrug-resistant-gram-negative-pathogens
#2
Matthew A Crawford, Debra J Fisher, Lisa M Leung, Sara Lomonaco, Christine Lascols, Antonio Cannatelli, Tommaso Giani, Gian Maria Rossolini, Yohei Doi, David R Goodlett, Marc W Allard, Shashi K Sharma, Erum Khan, Robert K Ernst, Molly A Hughes
The continued rise and spread of antimicrobial resistance among bacterial pathogens pose a serious challenge to global health. Countering antimicrobial-resistant pathogens requires a multifaceted effort that includes the discovery of novel therapeutic approaches. Here, we establish the capacity of the human CXC chemokines CXCL9 and CXCL10 to kill multidrug-resistant Gram-negative bacteria, including New Delhi metallo-beta-lactamase-1-producing Klebsiella pneumoniae and colistin-resistant members of the family Enterobacteriaceae that harbor the mobile colistin resistance protein MCR-1 and thus possess phosphoethanolamine-modified lipid A...
November 14, 2017: MBio
https://www.readbyqxmd.com/read/29081367/first-case-of-new-delhi-metallo-%C3%AE-lactamase-in-klebsiella-pneumoniae-from-ecuador-an-update-for-south-america
#3
Daniel Romero-Alvarez, Jorge Reyes, Viviana Quezada, Carolina Satán, Nelson Cevallos, Sofía Barrera, Gabriel Trueba, Luis E Escobar, José E Villacís
OBJECTIVES: To describe a clinical case of Klebsiella pneumoniae harboring New Delhi metallo-β-lactamase (NDM) plasmid in Ecuador and to present a map of reports of NDM isolates in South America. METHODS: We used the Modified Hodge Test, Carbapenem Inactivation Method, the synergy with imipenem-EDTA disk method, and Rapidec Carba NP for identification of antibiotic resistance mechanisms. The presence of resistant genes was explored with a conjugation assay, and molecular confirmation of NDM with PCR and DNA sequencing...
October 25, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/29064133/-double-carbapenem-and-oral-fosfomycin-for-the-treatment-of-complicated-urinary-tract-infections-caused-by-blandm-harboring-enterobacteriaceae-in-kidney-transplantation
#4
Rossana Rosa, Susan D Rudin, Laura J Rojas, Andrea M Hujer, Armando Perez-Cardona, Federico Perez, Robert A Bonomo, Octavio Martinez, Lilian M Abbo, Jose F Camargo
Infections with carbapenemase-producing carbapenem-resistant Enterobacteriaceae represent an emergent problem worldwide. Treatment of infections caused by New Delhi metallo-beta-lactamase (NDM)-harboring Enterobacteriaceae is particularly challenging as it frequently involves the use of nephrotoxic agents, which is problematic in kidney transplant recipients and non-renal transplants with marginal kidney function. We present two cases of urinary tract infections caused by NDM-harboring Enterobacteriaceae successfully treated with a combination of "double carbapenem" and oral fosfomycin...
October 24, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/29063891/identification-of-carbapenemase-mediated-resistance-among-enterobacteriaceae-bloodstream-isolates-a-molecular-study-from-india
#5
Srujana Mohanty, Mittal Gajanand, Rajni Gaind
Acquired resistance in carbapenem-resistant Enterobacteriaceae (CRE) conferred by carbapenemases is a major concern worldwide. Consecutive, non-duplicate isolates of Escherichia coli (EC) and Klebsiella pneumoniae from clinically diagnosed bloodstream infections were screened for the presence of carbapenem resistance by standard disk-diffusion method and minimum inhibitory concentration breakpoints using the Clinical and Laboratory Standards Institute guidelines. Carbapenemase-encoding genes were amplified by polymerase chain reaction...
July 2017: Indian Journal of Medical Microbiology
https://www.readbyqxmd.com/read/29058515/prevalence-and-molecular-characterization-of-new-delhi-metallo-beta-lactamases-in-multidrug-resistant-pseudomonas-aeruginosa-and-acinetobacter-baumannii-from-india
#6
Mohibur Rahman, Kashi Nath Prasad, Shefali Gupta, Sanjay Singh, Avinash Singh, Ashutosh Pathak, Kamlesh Kumar Gupta, Saheem Ahmad, Bruno Gonzalez Zorn
New Delhi metallo-beta-lactamase (NDM)-mediated carbapenem resistance in Pseudomonas aeruginosa and Acinetobacter baumannii is a major concern. We investigated the presence of NDM and its variants in P. aeruginosa and A. baumannii at a tertiary hospital in North India. A total of 236 isolates (130 P. aeruginosa and 106 A. baumannii) were included; 38 (29.23%) P. aeruginosa and 20 A. baumannii isolates (18.8%) were resistant to carbapenems and all of them were blaNDM positive. All 38 carbapenem-resistant P. aeruginosa harbored blaNDM-1, while 12 (60%) of 20 A...
October 23, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/29038264/clinical-evolution-of-new-delhi-metallo-%C3%AE-lactamase-ndm-optimizes-resistance-under-zn-ii-deprivation
#7
Guillermo Bahr, Luisina Vitor-Horen, Christopher R Bethel, Robert A Bonomo, Lisandro J González, Alejandro J Vila
Carbapenem-resistant Enterobacteriaceae (CRE) are rapidly spreading and taking a staggering toll on all healthcare systems, largely due to the dissemination of genes coding for potent carbapenemases. An important family of carbapenemases are the Zn(II)-dependent β-lactamases, known as Metallo-β-lactamases (MBLs). Among them, the New-Delhi Metallo-β-lactamase (NDM) has experienced the fastest and widest geographical spread. While other clinically important MBLs are soluble periplasmic enzymes, NDM β-lactamases are lipoproteins anchored to the outer membrane in Gram-negative bacteria...
October 16, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29036990/-drug-resistance-and-dissemination-of-new-delhi-metallo-%C3%AE-lactamase-1-positive-bacteria-in-a-patient
#8
X F Zhao, M Yuan, X Chen, X F Liu, D S Yu, J Li
Objective: The aim of this work was to report the surveillance and dissemination of NDM-1 positive bacteria in a patient and ward environment. Methods: In 2010, during the therapy for a 51 years old patient, clinical and environmental samples were collected for carbapenem resistant bacterial culture, according to the clinical microbiological examination. Strains identification and antibiotic susceptibility were tested by VITEK Compact 2 system and E-test. The bla(NDM-1) was detected by PCR and analyzed by sequencing...
October 6, 2017: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/29030025/emerge-of-blandm-1-and-blaoxa-48-like-harboring-carbapenem-resistant-klebsiella-pneumoniae-isolates-from-hospitalized-patients-in-southwestern-iran
#9
Zahra Hosseinzadeh, Hadi Sedigh Ebrahim-Saraie, Jamal Sarvari, Jalal Mardaneh, Behzad Dehghani, Seyed Mohammad Hossein Rokni-Hosseini, Mohammad Motamedifar
BACKGROUND: One of the most important emerging carbapenem-resistant bacteria is Klebsiella pneumoniae (K. pneumoniae). The present study aimed to investigate the antibiotic susceptibility pattern of K. pneumoniae isolates and detection of carbapenemase producing K. pneumoniae obtained from Iranian hospitalized patients. METHODS: This cross-sectional study was performed on 211 K. pneumoniae isolates which were recovered from different clinical specimens from 2014 to 2015...
October 10, 2017: Journal of the Chinese Medical Association: JCMA
https://www.readbyqxmd.com/read/28972857/identification-of-carbapenem-resistant-klebsiella-pneumoniae-with-emphasis-on-new-delhi-metallo-beta-lactamase-1-blandm-1-in-bandar-abbas-south-of-iran
#10
Saeed Shoja, Maryam Ansari, Forogh Faridi, Mohsen Azad, Parivash Davoodian, Sedigheh Javadpour, Abbas Farahani, Banafsheh Douzandeh Mobarrez, Afsaneh Karmostaji
BACKGROUND AND OBJECTIVE: The spread of carbapenem-resistant Klebsiella pneumoniae especially blaNDM-1-carrying isolates is a great concern worldwide. In this study we describe the molecular basis of carbapenem-resistant K. pneumoniae in three teaching hospitals at Bandar Abbas, south of Iran. MATERIALS AND METHODS: A total of 170 nonduplicate clinical isolates of K. pneumoniae were investigated. Antimicrobial susceptibility test was performed by disc diffusion method...
October 3, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28971873/new-delhi-metallo-%C3%AE-lactamase-1-catalyses-avibactam-and-aztreonam-hydrolysis
#11
Christopher T Lohans, Jürgen Brem, Christopher J Schofield
Metallo-β-lactamases (MBLs) threaten the clinical utility of β-lactam antibiotics by hydrolysing penicillins, cephalosporins, and carbapenems.….
October 2, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28965402/clinical-variants-of-new-delhi-metallo-%C3%AE-lactamase-are-evolving-to-overcome-zinc-scarcity
#12
Alesha C Stewart, Christopher R Bethel, Jamie VanPelt, Alex Bergstrom, Zishuo Cheng, Callie G Miller, Cameron Williams, Robert Poth, Matthew Morris, Olivia Lahey, Jay C Nix, David L Tierney, Richard C Page, Michael W Crowder, Robert A Bonomo, Walter Fast
Use and misuse of antibiotics have driven the evolution of serine β-lactamases to better recognize new generations of β-lactam drugs, but the selective pressures driving evolution of metallo-β-lactamases are less clear. Here, we present evidence that New Delhi metallo-β-lactamase (NDM) is evolving to overcome the selective pressure of zinc(II) scarcity. Studies of NDM-1, NDM-4 (M154L), and NDM-12 (M154L, G222D) demonstrate that the point mutant M154L, contained in 50% of clinical NDM variants, selectively enhances resistance to the penam ampicillin at low zinc(II) concentrations relevant to infection sites...
October 11, 2017: ACS Infectious Diseases
https://www.readbyqxmd.com/read/28960568/rapid-detection-of-the-new-delhi-metallo-b-lactamase-1-ndm-1-gene-by-loop-mediated-isothermal-amplification-lamp
#13
Mirna Giselle Moreira, Lidia Miranda Barreto, Vera Lúcia Dos Santos, Andrea Souza Monteiro, Vandack Nobre, Simone Gonçalves Dos Santos
BACKGROUND: New Delhi Metallo-b-lactamase (NDM-1) is an enzyme emerging around the world conferring resistance to a wide range of β-lactams agents and whose early detection is extremely important. We proposed to standardize the detection of the blaNDM-1 gene using the LOOP-mediated isothermal amplification technique (LAMP). METHODS: In all, 14 Gram-negative bacterial strains isolated from patients presenting pneumonia associated with mechanical ventilation were used for the blaNDM-1 standardization by LAMP...
September 28, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28916900/were-all-carbapenemases-created-equal-treatment-of-ndm-producing-extensively-drug-resistant-enterobacteriaceae-a-case-report-and-literature-review
#14
REVIEW
Vindana Chibabhai, Trusha Nana, Norma Bosman, Teena Thomas, Warren Lowman
PURPOSE: There is currently a paucity of published literature focused on the treatment of infections caused by NDM-producing organisms. METHODS: We describe a case of a bacteraemia caused by an extensively drug-resistant (XDR) New Delhi metallo-β-lactamase (NDM)-producing Serratia marcescens and review the treatment options for XDR NDM-producing Enterobacteriaceae. RESULTS: Infections caused by New Delhi beta-lactamase (NDM)-producing Enterobacteriaceae are becoming increasingly prevalent worldwide...
September 15, 2017: Infection
https://www.readbyqxmd.com/read/28910381/genetic-characterization-of-blandm-harboring-plasmids-in-carbapenem-resistant-escherichia-coli-from-myanmar
#15
COMPARATIVE STUDY
Yo Sugawara, Yukihiro Akeda, Noriko Sakamoto, Dan Takeuchi, Daisuke Motooka, Shota Nakamura, Hideharu Hagiya, Norihisa Yamamoto, Isao Nishi, Hisao Yoshida, Kazuhisa Okada, Khwar Nyo Zin, Mya Mya Aye, Kazunori Tonomo, Shigeyuki Hamada
The bacterial enzyme New Delhi metallo-β-lactamase hydrolyzes almost all β-lactam antibiotics, including carbapenems, which are drugs of last resort for severe bacterial infections. The spread of carbapenem-resistant Enterobacteriaceae that carry the New Delhi metallo-β-lactamase gene, blaNDM, poses a serious threat to public health. In this study, we genetically characterized eight carbapenem-resistant Escherichia coli isolates from a tertiary care hospital in Yangon, Myanmar. The eight isolates belonged to five multilocus-sequence types and harbored multiple antimicrobial-resistance genes, resulting in resistance against nearly all of the antimicrobial agents tested, except colistin and fosfomycin...
2017: PloS One
https://www.readbyqxmd.com/read/28887202/hospital-sewage-water-a-reservoir-for-variants-of-new-delhi-metallo-%C3%AE-lactamase-blandm-and-esbl-producing-enterobacteriaceae
#16
Shadab Parvez, Asad U Khan
New Delhi metallo-β-lactamase (NDM)-producing Enterobacteriaceae has become a threat to public health. Hospital sewage is generally unexplored, having a potential for harbouring bacteria causing healthcare-associated infections. Hence, we initiated this study to monitor NDM-producing Enterobacteriaceae in hospital sewage water. We detected 32 isolates with blaNDM variants, 17 Escherichia coli, 8 Citrobacter freundii, 4 Shigella boydii, 2 Citrobacter braakii, and 1 Citrobacter farmeri in hospital sewage water, showing resistance to all antibiotics except colistin...
September 5, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28878746/inhibition-of-new-delhi-metallo-%C3%AE-lactamase-1-ndm-1-producing-escherichia-coli-ir-6-by-selected-plant-extracts-and-their-synergistic-actions-with-antibiotics
#17
Brinda Chandar, Sundar Poovitha, Kaliappan Ilango, Ramasamy MohanKumar, Madasamy Parani
Improper use of antibiotics has led to a great concern in the development of pathogenic microbial resistance. New Delhi metallo-β-lactamase 1 (NDM-1) producing bacteria are resistant to most of the β-lactam antibiotics, and so far, no new compounds have been clinically tested against these bacteria. In this study, ethanol extracts from the leaves of 240 medicinal plant species were screened for antibacterial activity against an NDM-1 Escherichia coli strain. The extracts that showed antibacterial activity were then tested for minimum inhibitory concentrations (MICs) and zones of inhibition...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28876082/co-production-of-ndm-1-and-oxa-232-by-st16-klebsiella-pneumoniae-italy-2016
#18
Manuela Avolio, Carla Vignaroli, Massimo Crapis, Alessandro Camporese
Carbapenem-resistant Klebsiella pneumoniae strains, New Delhi metallo-β-lactamase-1 producers, are still rare in Italy, being endemic in Southeast Asiatic region. In October 2016, a multidrug-resistant K. pneumoniae was isolated from blood and urine of an Italian long-hospitalized patient with urosepsis without travel history abroad. To the best of our knowledge, this is the first report of bacteremia caused by an ST16 K. pneuomoniae New Delhi metallo-β-lactamase-1 and OXA-232 co-producing carbapenemase, in Italy...
October 2017: Future Microbiology
https://www.readbyqxmd.com/read/28867789/multiple-antibiotic-resistant-extended-spectrum-%C3%AE-lactamase-esbl-producing-enterobacteria-in-fresh-seafood
#19
Asem Sanjit Singh, Manjusha Lekshmi, Sreepriya Prakasan, Binaya Bhusan Nayak, Sanath Kumar
Members of the family Enterobacteriaceae include several human pathogens that can be acquired through contaminated food and water. In this study, the incidence of extended spectrum β-lactamase (ESBL)-producing enterobacteria was investigated in fresh seafood sold in retail markets. The ESBL-positive phenotype was detected in 169 (78.60%) isolates, with Escherichia coli being the predominant species (53), followed by Klebsiella oxytoca (27), and K. pneumoniae (23). More than 90% of the isolates were resistant to third generation cephalosporins, cefotaxime, ceftazidime, and cefpodoxime...
August 30, 2017: Microorganisms
https://www.readbyqxmd.com/read/28859500/emergence-of-ndm-1-among-carbapenem-resistant-klebsiella-pneumoniae-in-iraqi-hospitals
#20
Nadheema Hammood Hussein
Carbapenems are the last drugs of choice apart from colistin against serious infections caused by Gram-negative bacteria. However, there are increasing number of reports indicating prevailing emergence of metallo-β-lactamase (MBL)-producing clinical isolates worldwide and among them New Delhi MBL (NDM) is the most prevalent one. This study reports NDM-1 for the first time among Klebsiella pneumoniae from hospitalized patients in Baghdad, Iraq. Fifty-five clinical isolates of K. pneumoniae resistant to carbapenem were investigated from burned wounds, sputum, and blood samples...
September 1, 2017: Acta Microbiologica et Immunologica Hungarica
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