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https://www.readbyqxmd.com/read/28636666/molecular-and-microbiological-report-of-a-hospital-outbreak-of-ndm-1-carrying-enterobacteriaceae-in-mexico
#1
Paola Bocanegra-Ibarias, Elvira Garza-González, Rayo Morfín-Otero, Humberto Barrios, Licet Villarreal-Treviño, Eduardo Rodríguez-Noriega, Ulises Garza-Ramos, Santiago Petersen-Morfin, Jesus Silva-Sanchez
OBJECTIVES: To characterize the microbiological, molecular and epidemiological data of an outbreak of carbapenem-resistant Enterobacteriaceae (CRE) in a tertiary-care hospital in Mexico. METHODS: From September 2014 to July 2015, all CRE clinical isolates recovered during an outbreak in the Hospital Civil "Fray Antonio Alcalde" in Jalisco, Mexico were screened for antimicrobial susceptibility, carbapenemase production, carbapenemase-encoding genes, and plasmid profiles...
2017: PloS One
https://www.readbyqxmd.com/read/28630202/identifying-spectra-of-activity-and-therapeutic-niches-for-ceftazidime-avibactam-and-imipenem-relebactam-against-carbapenem-resistant-enterobacteriaceae
#2
Ghady Haidar, Cornelius J Clancy, Liang Chen, Palash Samanta, Ryan K Shields, Barry N Kreiswirth, M Hong Nguyen
We determined imipenem, imipenem-relebactam, ceftazidime and ceftazidime-avibactam minimum inhibitory concentrations (MICs) against 100 CRE isolates that underwent whole genome sequencing. KPCs were the most common carbapenemases. Forty-six isolates carried ESBLs. With the addition of relebactam, imipenem susceptibility increased from 8% to 88%. With the addition of avibactam, ceftazidime susceptibility increased from 0% to 85%. Neither imipenem-relebactam nor ceftazidime-avibactam was active against MBL-producers...
June 19, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28626739/systematic-review-and-meta-analysis-of-imipenem-resistant-pseudomonas-aeruginosa-prevalence-in-iran
#3
Hamid Vaez, Amin Salehi-Abargouei, Farzad Khademi
INTRODUCTION: Imipenem-resistant Pseudomonas aeruginosa (IRPA), due to resistance to different classes of antibiotics and its remarkable capacity to survive in harsh and adverse conditions such as those in the hospital environment, is considered a serious threat to the healthcare system. Given the great impact of IRPA on patients' outcome and in order to possibly improve antibiotic prescription, this study was conducted to determine the prevalence of clinical isolates of IRPA in different parts of Iran...
June 2017: Germs
https://www.readbyqxmd.com/read/28622712/evaluation-of-the-antibacterial-and-modulatory-potential-of-%C3%AE-bisabolol-%C3%AE-cyclodextrin-and-%C3%AE-bisabolol-%C3%AE-cyclodextrin-complex
#4
Fernanda de Sousa Oliveira, Thiago Sampaio de Freitas, Rafael Pereira da Cruz, Maria do Socorro Costa, Raimundo Luiz Silva Pereira, Lucindo José Quintans-Júnior, Tatianny de Araújo Andrade, Paula Dos Passos Menezes, Bruna Maria Hipólito de Sousa, Paula Santos Nunes, Mairim Russo Serafini, Irwin Rose Alencar de Menezes, Adriano Antunes de Souza Araújo, Henrique Douglas Melo Coutinho
The present study aimed to evaluate the antibacterial and modulatory potential of α-bisabolol, β-cyclodextrin and α-bisabolol/β-cyclodextrin complex. The minimum inhibitory concentration was determined through the broth microdilution technique using the bacterial strains: Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa. The drugs norfloxacin, imipenem and gentamicin were used in the tests, and the compounds α-bisabolol and β-cyclodextrin; all the compounds were diluted in DMSO. To obtain the minimum inhibitory concentration (MIC) a serial microdilution of the substances in volumes corresponding to the sub-inhibitory concentration (MIC/8), and microdilution with the antibiotic until the penultimate well were performed...
June 12, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28619105/patterns-of-antimicrobial-resistance-in-intensive-care-unit-patients-a-study-in-vietnam
#5
Giang M Tran, Thao P Ho-Le, Duc T Ha, Chau H Tran-Nguyen, Tuyet S M Nguyen, Thao T N Pham, Tuyet A Nguyen, Dung A Nguyen, Hoa Q Hoang, Ngoc V Tran, Tuan V Nguyen
BACKGROUND: Antimicrobial resistance has emerged as a major concern in developing countries. The present study sought to define the pattern of antimicrobial resistance in ICU patients with ventilator-associated pneumonia. METHODS: Between November 2014 and September 2015, we enrolled 220 patients (average age ~ 71 yr) who were admitted to ICU in a major tertiary hospital in Ho Chi Minh City, Vietnam. Data concerning demographic characteristics and clinical history were collected from each patient...
June 15, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28618388/simultaneous-determination-of-nine-%C3%AE-lactam-antibiotics-in-human-plasma-by-an-ultrafast-hydrophilic-interaction-chromatography-tandem-mass-spectrometry
#6
Alan Abdulla, Soma Bahmany, Rixt A Wijma, Bart C H van der Nagel, Birgit C P Koch
Contemporary β-lactam antibiotic dosing is debatable in severely ill patients, since the occurrence of pathophysiological changes in critical illness can result in great inter-individual variability. Therapeutic drug monitoring (TDM) is a commonly used dosing strategy to optimize exposure and thereby minimize toxicity and maximize the efficacy. Currently, TDM of β-lactam antibiotics is rarely performed, due to poor availability in clinical practice. We describe an ultrafast Hydrophilic-Interaction Chromatography (HILIC) based UPLC-MS/MS method for the determination of amoxicillin, benzylpenicillin, cefotaxime, cefuroxime, ceftazidime, flucloxacillin, imipenem, meropenem and piperacillin in human plasma...
June 8, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28614259/global-regulator-soxr-is-a-negative-regulator-of-efflux-pump-gene-expression-and-affects-antibiotic-resistance-and-fitness-in-acinetobacter-baumannii
#7
Henan Li, Qi Wang, Ruobing Wang, Yawei Zhang, Xiaojuan Wang, Hui Wang
SoxR is a global regulator contributing to multidrug resistance in Enterobacteriaceae. However, the contribution of SoxR to antibiotic resistance and fitness in Acinetobacter baumannii has not yet been studied. Comparisons of molecular characteristics were performed between 32 multidrug-resistant A. baumannii isolates and 11 susceptible isolates. A soxR overexpression mutant was constructed, and its resistance phenotype was analyzed. The impact of SoxR on efflux pump gene expression was measured at the transcription level...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28607010/comparison-of-two-phenotypic-algorithms-to-detect-carbapenemase-producing-enterobacteriaceae
#8
Laurent Dortet, Sandrine Bernabeu, Camille Gonzalez, Thierry Naas
A novel algorithm designed for the screening of carbapenemase producing Enterobactericeae (CPE), based on faropenem and temocillin disks was compared to that of the French Society of Microbiology (CA-SFM), which is based on ticarcillin-clavulanate, imipenem and temocillin disks. Both algorithms presented comparable negative predictive values (98.6% vs 97.5%) for the CPE screening among carbapenem non-susceptible Enterobacteriaceae However, since 46.2% (n=49) of the CPEs were correctly identified as OXA-48-like producers by the faropenem/temocillin-based algorithm, it significantly decreased the number of complementary tests needed (42...
June 12, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28606064/bacteremia-due-to-gordonia-polyisoprenivorans-case-report-and-review-of-literature
#9
Xiurong Ding, Yanhua Yu, Ming Chen, Chen Wang, Yanfang Kang, Hongman Li, Jinli Lou
BACKGROUND: Gordonia polyisoprenivorans is a ubiquitous aerobic actinomycetes bacterium that rarely cause infections in humans. Here, we report a case of G. polyisoprenivorans catheter-related bacteremia in an AIDS patient. CASE PRESENTATION: A 37-year-old man with a past medical history of AIDS-related lymphoma suffered bacteremia caused by a Gram-positive corynebacterium. The strain was identified as a Gordonia species by matrix-assisted laser desorption ionization-time of flight mass spectrometry and confirmed to G...
June 12, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28605923/bacterial-sepsis-in-neonates-single-centre-study-in-a-neonatal-intensive-care-unit-in-bosnia-and-herzegovina
#10
Izeta Softić, Husref Tahirović, Vincenzo Di Ciommo, Cinzia Auriti
OBJECTIVE: The aim of the study was to evaluate the incidence, mortality, risk factors, aetiology and the susceptibility to antibiotics of the bacteria responsible for sepsis. MATERIAL AND METHODS: A single centre, prospective, observational study, involving 200 neonates admitted over 12 months to the NICU of the University Children's Hospital, Tuzla, Bosnia and Herzegovina. RESULTS: The crude incidence of all neonatal sepsis was 68.0% (136/200) and that of late-onset sepsis (LOS) was 48...
May 2017: Acta Medica Academica
https://www.readbyqxmd.com/read/28605515/fri-2-carbapenemase-producing-enterobacter-cloacae-complex-in-the-uk
#11
Danièle Meunier, Jacqueline Findlay, Michel Doumith, Daniel Godoy, Claire Perry, Rachel Pike, Firza Gronthoud, Theresa Shryane, Laurent Poirel, William Welfare, Neil Woodford, Katie L Hopkins
Objectives: Detection of rarer carbapenemases is challenging, as it requires molecular assays with comprehensive coverage or the use of phenotypic methods for the detection of carbapenemase activity. We describe a new class A carbapenemase, FRI-2, in an Enterobacter cloacae complex isolate following implementation of an in-house multiplex PCR for the detection of 'rare' class A carbapenemases. Methods: MICs were determined by agar dilution. A carbapenem-resistant E...
June 10, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28598078/-the-transmission-of-kpc-2-gene-in-klebsiella-species
#12
Li-Juan Wu, Ting-Ting Wang, Qing-Yan He, Dan Zhao, Si-Shi Tang, Mei Kang, Chao He, Yi Xie
OBJECTIVES: To explore the mechanisms of imipenem resistance inKlebsiella spp. and the transmission of Klebsiella pneumoniae Carbapenemase-2(KPC-2) gene in Klebsiella species. METHODS: The imipenem resistant Klebsiella pneumoniae and Klebsiella oxytoca were isolated in the West China Hospital of Sichuan University in 2009/2010 and 2012/2013. Their minimal inhibitory concentration (MIC) was determined by agar dilution method. CARB ChromID plate and improved Hodge test were undertaken to detect carbapenemases resistant phenotype...
September 2016: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/28596943/in-vitro-evaluation-of-the-colistin-carbapenem-combination-in-clinical-isolates-of-a-baumannii-using-the-checkerboard-etest-and-time-kill-curve-techniques
#13
Micheline A H Soudeiha, Elias A Dahdouh, Eid Azar, Dolla K Sarkis, Ziad Daoud
The worldwide increase in the emergence of carbapenem resistant Acinetobacter baumannii (CRAB) calls for the investigation into alternative approaches for treatment. This study aims to evaluate colistin-carbapenem combinations against Acinetobacter spp., in order to potentially reduce the need for high concentrations of antibiotics in therapy. This study was conducted on 100 non-duplicate Acinetobacter isolates that were collected from different patients admitted at Saint George Hospital-University Medical Center in Beirut...
2017: Frontiers in Cellular and Infection Microbiology
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
#14
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/28594170/pharmaceutical-approaches-to-target-antibiotic-resistance-mechanisms
#15
Domenico Schillaci, Virginia Spanò, Barbara Parrino, Anna Carbone, Alessandra Montalbano, Paola Barraja, Patrizia Diana, Girolamo Cirrincione, Stella Cascioferro
There is urgent need for new therapeutic strategies to fight the global threat of antibiotic resistance. The focus of this Perspective is on chemical agents that target the most common mechanisms of antibiotic resistance such as enzymatic inactivation of antibiotics, changes in cell permeability, and induction/activation of efflux pumps. Here we assess the current landscape and challenges in the treatment of antibiotic resistance mechanisms at both bacterial cell and community levels. We also discuss the potential clinical application of chemical inhibitors of antibiotic resistance mechanisms as add-on treatments for serious drug-resistant infections...
June 20, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28588177/antibiotic-susceptibility-pattern-of-bacteria-isolated-from-various-specimens-of-patients-with-hematological-malignancy
#16
J Roy, D C Nag
Infection is a life threatening complication in patients with hematological malignancy. So, proper treatment of infection with suitable antibiotic is very important in these patients. The aim of this study was to determine the antibiotic susceptibility of bacteria isolated from various specimens of patients with hematological malignancy, so that, an appropriate regimen of empiric antibiotic treatment can be established for these patients. This observational study was done in the Department of Microbiology and Immunology, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh from March 2012 to August 2012...
April 2017: Mymensingh Medical Journal: MMJ
https://www.readbyqxmd.com/read/28584733/nosocomial-infections-and-antibiotic-resistance-pattern-in-open-heart-surgery-patients-at-imam-ali-hospital-in-kermanshah-iran
#17
Fatemeh Heydarpour, Youssef Rahmani, Behzad Heydarpour, Atefeh Asadmobini
Background: Patients undergoing open heart surgery have a relatively high risk of acquiring nosocomial infections. The development of antibiotic-resistant infections is associated with prolonged hospital stays and mortalities. Objectives: The present study was conducted to investigate nosocomial infections and the antibiotic resistance pattern in bacteria causing these infections in open heart surgery patients at Imam Ali Hospital in Kermanshah in the west of Iran over a 4-year period from March 2011 to March 2014...
2017: GMS Hygiene and Infection Control
https://www.readbyqxmd.com/read/28575389/prospective-randomized-double-blind-phase-2-dose-ranging-study-comparing-efficacy-and-safety-of-imipenem-cilastatin-plus-relebactam-with-imipenem-cilastatin-alone-in-patients-with-complicated-urinary-tract-infections
#18
Matthew Sims, Valeri Mariyanovski, Patrick McLeroth, Wayne Akers, Yu-Chieh Lee, Michelle L Brown, Jiejun Du, Alison Pedley, Nicholas A Kartsonis, Amanda Paschke
Objectives: The β-lactamase inhibitor relebactam can restore imipenem activity against imipenem non-susceptible pathogens. Methods: To explore relebactam's safety, tolerability and efficacy, we conducted a randomized (1:1:1), controlled, Phase 2 trial comparing imipenem/cilastatin+relebactam 250 mg, imipenem/cilastatin+relebactam 125 mg and imipenem/cilastatin alone in adults with complicated urinary tract infections (cUTI) or acute pyelonephritis, regardless of baseline pathogen susceptibility...
June 1, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28574021/isolation-of-bacteria-from-diabetic-foot-ulcers-with-special-reference-to-anaerobe-isolation-by-simple-two-step-combustion-technique-in-candle-jar
#19
Jayeeta Haldar, Poulami Mukherjee, Satinath Mukhopadhyay, Prasanta Kumar Maiti
BACKGROUND & OBJECTIVES: Although polymicrobial infections involving both aerobic and anaerobic bacteria are very common in diabetic foot ulcers, in many centres of developing countries, anaerobes are rarely isolated due to technical difficulties. This can be overcome by using a new simple, innovative technique of a combination of candle combustion and use of acidified copper-coated steel wool, as reported here. METHODS: In-house developed method was used in a prospective clinico-microbiological study for anaerobes from randomly selected 43 patients with diabetic foot ulcers along with conventional method of anaerobic culture in GasPak system and aerobic culture by standard laboratory procedures...
January 2017: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/28571186/clinical-and-laboratory-profile-of-urinary-tract-infections-in-type-2-diabetics-aged-over-60-years
#20
Sadhna Sharma, Biju Govind, Sujeet Kumar Naidu, Srinivas Kinjarapu, Mohammed Rasool
INTRODUCTION: Urinary tract infections are frequently encountered among diabetic patients and the incidence rate increases with age. There have been growing research to identify the clinical profile of urinary tract infections in diabetic patients. However, such studies on elderly patients are rare. AIM: To determine the risk factors, clinical/laboratory profiles, causative organisms and antimicrobial susceptibilities in type 2 diabetics aged over 60 years. MATERIALS AND METHODS: This prospective single centre study was conducted at NRI Medical College and General Hospital, Guntur, India, between November 2012 and November 2014...
April 2017: Journal of Clinical and Diagnostic Research: JCDR
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