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https://www.readbyqxmd.com/read/29774093/distribution-of-virulence-associated-genes-and-antimicrobial-susceptibility-in-clinical-acinetobacter-baumannii-isolates
#1
Chao Liu, Yaowen Chang, Ying Xu, Yun Luo, Linrong Wu, Zhanjun Mei, Shigang Li, Rui Wang, Xu Jia
Acinetobacter baumannii is undoubtedly one of the most clinically significant pathogens. The multidrug resistance and virulence potential of A. baumannii are responsible for hospital-acquired nosocomial infections. Unlike numerous investigations on the drug-resistant epidemiology of A. baumanni , virulence molecular epidemiology is less studied. Here, we collected 88 A. baumannii clinical isolates, tested their antimicrobial susceptibility to 10 commonly used antibiotics and analyzed the distribution of 9 selected virulence-associated genes, aims to investigate the primary characteristics of the virulence-associated genes that exist in clinically multidrug resistant (MDR) and non-MDR isolates of A...
April 24, 2018: Oncotarget
https://www.readbyqxmd.com/read/29772742/characterization-of-antimicrobial-resistance-determinants-and-class-1-and-class-2-integrons-in-salmonella-enterica-spp-multidrug-resistant-isolates-from-pigs
#2
Héctor Argüello, Beatriz Guerra, Irene Rodríguez, Pedro Rubio, Ana Carvajal
Antimicrobial resistance (AMR) and Salmonella spp., are primary concerns in public health. The present study characterizes the AMR determinants of 62 multi-drug resistant (MDR) Salmonella enterica spp., isolates from swine, which were obtained between 2004⁻2006, a major source of human salmonellosis. The AMR determinants were investigated by PCR, checking the presence of class 1 and class 2 integrons and 29 resistance genes. Genes sul1 , blaTEM1 -like, aadA2 , tet (A), and dfrA12 were more prevalent ( p < 0...
May 16, 2018: Genes
https://www.readbyqxmd.com/read/29769010/evaluation-of-fosfomycin-activity-against-esbl-producing-enterobacteriaceae-isolated-from-iran
#3
Hossein Kazemian
BACKGROUND: Rising rates of antimicrobial resistance among Enterobacteriaceae limit the use of reliably active forms of available drugs. The aim of this study was to investigate the prevalence of fosfomycin (US6794490B2) resistance gene among ESBL producing isolates in Iran. METHOD: We tested 355 isolates of Enterobacteriacea collected from various clinical samples including urine, wounds, blood and other sources during June 2016 to July 2017. Antibiotic sensitivity and extended spectrum beta lactamase (ESBL) production were tested using agar dilution method according to the Clinical and Laboratory Standards Institute (CLSI) guidelines...
May 16, 2018: Recent Patents on Anti-infective Drug Discovery
https://www.readbyqxmd.com/read/29755420/characterization-of-two-novel-bacteriophages-infecting-multidrug-resistant-mdr-acinetobacter-baumannii-and-evaluation-of-their-therapeutic-efficacy-in-vivo
#4
Kyoungeun Cha, Hynu K Oh, Jae Y Jang, Yunyeol Jo, Won K Kim, Geon U Ha, Kwan S Ko, Heejoon Myung
Acinetobacter baumannii is emerging as a challenging nosocomial pathogen due to its rapid evolution of antibiotic resistance. We report characterization of two novel bacteriophages, PBAB08 and PBAB25, infecting clinically isolated, multidrug-resistant (MDR) A. baumannii strains. Both phages belonged to Myoviridae of Caudovirales as their morphology observed under an electron microscope. Their genomes were double stranded linear DNAs of 42,312 base pairs and 40,260 base pairs, respectively. The two phages were distinct from known Acinetobacter phages when whole genome sequences were compared...
2018: Frontiers in Microbiology
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/29750044/successful-control-of-resistance-in-pseudomonas-aeruginosa-using-antibiotic-stewardship-and-infection-control-programs-at-a-chinese-university-hospital-a-6-year-prospective-study
#6
Lei Liu, Bin Liu, Yu Li, Wei Zhang
Objective: Pseudomonas aeruginosa is emerging as a highly multidrug-resistant (MDR) nosocomial pathogen. Data on the efficacy of infection control measures in endemic situations are lacking. We investigated the effect of antimicrobial stewardship (AMS) and infection control programs (ICPs) in controlling the resistance of P. aeruginosa at a tertiary hospital center. Methods: Susceptibility and resistance were investigated using broth microdilution, as per the guidelines of the Clinical and Laboratory Standards Institute...
2018: Infection and Drug Resistance
https://www.readbyqxmd.com/read/29750043/analysis-of-acinetobacter-baumannii-hospital-infections-in-patients-treated-at-the-intensive-care-unit-of-the-university-hospital-wroclaw-poland-a-6-year-single-center-retrospective-study
#7
Wieslawa Duszynska, Agnieszka Litwin, Stanislaw Rojek, Aleksander Szczesny, Alfonso Ciasullo, Waldemar Gozdzik
Background: Acinetobacter baumannii (AB) is one of the most frequently isolated strains of bacteria in intensive care unit (ICU) patients, which provides huge therapeutic problems due to its multidrug resistance (MDR). Patients and methods: The overall purpose of the study was analysis of health care- associated infections in terms of the incidence of AB strain infections and the changing susceptibility of this strain within a 6-year observation (2011-2016). The study was carried out in an ICU of the University Hospital in Wroclaw (Poland)...
2018: Infection and Drug Resistance
https://www.readbyqxmd.com/read/29746496/pharyngeal-colonization-and-drug-resistance-profiles-of-morraxella-catarrrhalis-streptococcus-pneumoniae-staphylococcus-aureus-and-haemophilus-influenzae-among-hiv-infected-children-attending-art-clinic-of-felegehiwot-referral-hospital-ethiopia
#8
Wondemagegn Mulu, Endalew Yizengaw, Megbaru Alemu, Daniel Mekonnen, Derese Hailu, Kassaw Ketemaw, Bayeh Abera, Mulugeta Kibret
BACKGROUND: Asymptomatic pharyngeal colonization by potential bacteria is the primary reservoir for bacterial species within a population and is considered a prerequisite for development of major childhood diseases such as sinusitis, otitis media, pneumonia, bacteremia, and meningitis. However, there is dearth of data on the colonization and drug resistance pattern of the main bacterial pathogens in the pharynx of HIV infected children in Ethiopia. Therefore, this study determined the pharyngeal colonization and drug resistance profile of bacterial pathogens in HIV infected children attending ART clinic of Felegehiwot Referral Hospital (FHRH), Amhara Region, Ethiopia...
2018: PloS One
https://www.readbyqxmd.com/read/29746491/emergence-and-selection-of-isoniazid-and-rifampin-resistance-in-tuberculosis-granulomas
#9
Elsje Pienaar, Jennifer J Linderman, Denise E Kirschner
Drug resistant tuberculosis is increasing world-wide. Resistance against isoniazid (INH), rifampicin (RIF), or both (multi-drug resistant TB, MDR-TB) is of particular concern, since INH and RIF form part of the standard regimen for TB disease. While it is known that suboptimal treatment can lead to resistance, it remains unclear how host immune responses and antibiotic dynamics within granulomas (sites of infection) affect emergence and selection of drug-resistant bacteria. We take a systems pharmacology approach to explore resistance dynamics within granulomas...
2018: PloS One
https://www.readbyqxmd.com/read/29744322/dissemination-of-multidrug-resistant-class-i-and-ii-integrons-and-molecular-typing-of-ctx-m-producing-klebsiella-pneumoniae
#10
Alisha Akya, Azam Elahi, Roya Chegenelorestani, Mahya Rezaee
Introduction: Klebsiella pneumoniae ( K. pneumoniae ) is an important opportunistic pathogen causes serious community and hospital-acquired infections, which is highly resistant to antibiotics. We aimed to determine the frequency of multidrug resistant (MDR) and molecular typing of clinical isolates of K. pneumoniae . Methodology: One hundred isolates of K. pneumoniae were collected from clinical samples in three general hospitals in Kermanshah. The antimicrobial susceptibility and extended-spectrum beta-lactamases (ESBL) production of isolates were determined using disk diffusion and combined disk methods, respectively...
April 2018: International Journal of Applied and Basic Medical Research
https://www.readbyqxmd.com/read/29742471/the-impact-of-initial-antibiotic-treatment-failure-real-world-insights-in-healthcare-associated-or-nosocomial-pneumonia
#11
Kellie Ryan, Sudeep Karve, Pascale Peeters, Elisa Baelen, Danielle Potter, Sonia Rojas-Farreras, Esther Pascual, Jesús Rodríguez-Baño
OBJECTIVES: To assess real-world treatment patterns and clinical outcomes associated with initial antibiotic therapy (IAT, antibiotics received ≤48 h post-initiation of antibiotic therapy), including level of IAT failure, and potential risk factors for IAT failure in healthcare-associated infections. METHODS: Data were obtained from medical records of adult patients hospitalized with healthcare-associated pneumonia (HCAP) and nosocomial pneumonia (NP), including ventilator-associated pneumonia, from 1 July 2013 - 30 June 2014 in Brazil, France, Italy, Russia and Spain during the retrospective, observational study, RECOMMEND (NCT02364284; D4280R00005)...
May 6, 2018: Journal of Infection
https://www.readbyqxmd.com/read/29741076/monitoring-of-hospital-acquired-pneumonia-in-patients-with-severe-brain-injury-on-first-access-to-intensive-neurological-rehabilitation-first-year-of-observation
#12
Gianfranco Beghi, Antonio De Tanti, Paolo Serafini, Chiara Bertolino, Antonietta Celentano, Graziella Taormina
Nosocomial or hospital acquired pneumonia (HAP) is an illness contracted during a hospital stay, generally with onset 48 hours or more after admission to hospital, or within 14 days of discharge from hospital. HAP is divided into subgroups: Ventilator-associated pneumonia (VAP), accounting for 86% of hospital acquired pneumonia, and stroke-associated pneumonia (SAP). The incidence of SAP in neurological intensive care units (NICUs) is 4.1-56.6%, in medical intensive care units (MICUs) it is 17-50%, in stroke units it is 3...
May 9, 2018: Monaldi Archives for Chest Disease, Archivio Monaldi Per le Malattie del Torace
https://www.readbyqxmd.com/read/29731646/in-vitro-antibacterial-effect-of-fosfomycin-combination-therapy-against-colistin-resistant-klebsiella-pneumoniae
#13
Wei Yu, Qixia Luo, Qingyi Shi, Chen Huang, Xiao Yu, Tianshui Niu, Kai Zhou, Jiajie Zhang, Yonghong Xiao
Objectives: Colistin is still a "last-resort" antibiotic used to manage human infections due to multidrug-resistant (MDR) Klebsiella pneumoniae . However, colistin-resistant K. pneumoniae (CR-Kp) isolates emerged a decade ago and had a worldwide distribution. The purpose of this study was to evaluate the genetic data of CR-Kp and identify the antibacterial activity of fosfomycin (FM) alone and in combination with amikacin (AMK) or colistin (COL) against CR-Kp in vitro. Methods: Three clinical CR-Kp isolates from three patients were collected...
2018: Infection and Drug Resistance
https://www.readbyqxmd.com/read/29729709/molecular-analysis-of-integron-gene-cassette-arrays-associated-multi-drug-resistant-enterobacteriaceae-isolates-from-poultry
#14
Azza S El-Demerdash, Mohamed G Aggour, Mona M El-Azzouny, Sally H Abou-Khadra
The study investigated 110 Enterobacteriaceae isolates from broiler chickens isolated from Sharkia poultry farms and analyzed the isolates antimicrobial resistance and the presence of integrons as a potential basis for this resistance. Antibiotic susceptibilities against 12 different antibiotics were determined by the disk diffusion method. Prevalences and classes of integrons were then detected in multi-drug resistant (MDR) strains using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) followed by sequencing of the variable parts...
April 30, 2018: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/29729705/multidrug-resistance-prevalence-and-phylogenetic-analysis-of-genes-encoding-class-ii-and-iii-integrons-in-clinically-isolated-escherichia-coli
#15
Manal Mohamed Elhassan Taha, Hisham Elraih Homeida, Omer Mohammed Elhassan Dafalla, Siddig Ibrahim Abdelwahab
The present study was conducted to evaluate the susceptibility, multidrug resistance and genetic characteristics of Escherichia coli (E. coli) strains, isolated from clinical samples from Jazan Hospital, Jazan, Saudi Arabia. A total of 95 samples were recruited from wound, urine, stool and blood. The isolates were assessed for their antibiotic susceptibilities and the presence of class II and III integrons was studied using PCR technique. Integron II-positive PCR products were further confirmed using partial sequencing...
April 30, 2018: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/29728084/group-b-streptococci-vaginal-colonization-and-drug-susceptibility-pattern-among-pregnant-women-attending-in-selected-public-antenatal-care-centers-in-addis-ababa-ethiopia
#16
Solomon Assefa, Kassu Desta, Tsehaynesh Lema
BACKGROUND: Group B Streptococcus (GBS) is the leading cause of septicemia, meningitis, and pneumonia in neonates. Maternal colonization with GBS is the principal risk factor for early-onset disease in infants. Group B Streptococcus is now an important cause of maternal and neonatal morbidity and mortality in many parts of the world. In Ethiopia, few studies have been done on GBS colonization among pregnant women. The aim of this study was to determine the prevalence of GBS colonization, antimicrobial susceptibility patterns and assess risk factors among pregnant women...
May 4, 2018: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/29726994/treatment-of-human-challenge-and-mdr-strains-of-neisseria-gonorrhoeae-with-lpxc-inhibitors
#17
Constance M John, Dongxiao Feng, Gary A Jarvis
Objectives: Inhibitors of UDP-3-O-(R-3-hydroxymyristoyl)-N-acetylglucosamine deacetylase (LpxC), which catalyses the second step in the biosynthesis of lipid A, have been developed as potential antibiotics for Gram-negative infections. Our objectives were to determine the effect of LpxC inhibition on the in vitro survival and inflammatory potential of Neisseria gonorrhoeae. Methods: Survival of four human challenge strains was determined after treatment with two LpxC inhibitors for 2 and 4 h...
May 2, 2018: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/29726697/antibacterial-activity-of-thymus-vulgaris-essential-oil-alone-and-in-combination-with-cefotaxime-against-bla-esbl-producing-multidrug-resistant-enterobacteriaceae-isolates
#18
Qada Benameur, Teresa Gervasi, Vito Pellizzeri, Mária Pľuchtová, Hassiba Tali-Maama, Farida Assaous, Badia Guettou, Kheira Rahal, Daniela Gruľová, Giacomo Dugo, Andreana Marino, Meriem-Hind Ben-Mahdi
The aim was to evaluate the susceptibility of blaESBL producing Enterobacteriaceae to Slovakian Thymus vulgaris essential oil (TVEO) alone and in combination with cefotaxime (CTX). TVEO composition was determined by gas chromatograph-mass spectrometer (GC/MS). Susceptibility to 21 antibiotics was determined by disc diffusion assay. Genes characterization for resistance to β-lactams was accomplished by polymerase chain reaction (PCR). The antibacterial activity was investigated by standard methods. The synergistic interaction was determined by checkerboard test...
May 4, 2018: Natural Product Research
https://www.readbyqxmd.com/read/29717009/an-attenuated-crispr-cas-system-in-enterococcus-faecalis-permits-dna-acquisition
#19
Karthik Hullahalli, Marinelle Rodrigues, Uyen Thy Nguyen, Kelli Palmer
Antibiotic-resistant bacteria are critical public health concerns. Among the prime causative factors for the spread of antibiotic resistance is horizontal gene transfer (HGT). A useful model organism for investigating the relationship between HGT and antibiotic resistance is the opportunistic pathogen Enterococcus faecalis , since the species possesses highly conjugative plasmids that readily disseminate antibiotic resistance genes and virulence factors in nature. Unlike many commensal E. faecalis strains, the genomes of multidrug-resistant (MDR) E...
May 1, 2018: MBio
https://www.readbyqxmd.com/read/29709445/predominant-bacteria-and-patterns-of-antibiotic-susceptibility-in-urinary-tract-infection-in-children-with-spina-bifida
#20
Tara K Ortiz, Nermarie Velazquez, Laura Ding, Jonathan C Routh, John S Wiener, Patrick C Seed, Sherry S Ross
BACKGROUND: Urinary tract infection is more common in children with spina bifida (SB) than neurologically intact children, and Escherichiacoli is the most common urinary pathogen in the general pediatric population. Less is known of the pathogens responsible for urinary tract infections (UTI) in the pediatric SB population or their evolving antimicrobial resistance patterns. The goal of this study is to determine the epidemiology and antimicrobial resistance patterns of SB-associated urinary pathogens...
April 20, 2018: Journal of Pediatric Urology
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