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https://www.readbyqxmd.com/read/29351771/characterization-of-salmonella-enterica-from-invasive-bloodstream-infections-and-water-sources-in-rural-ghana
#1
Denise Dekker, Ralf Krumkamp, Daniel Eibach, Nimako Sarpong, Kennedy Gyau Boahen, Michael Frimpong, Elina Fechtner, Sven Poppert, Ralf Matthias Hagen, Norbert Georg Schwarz, Yaw Adu-Sarkodie, Ellis Owusu-Dabo, Justin Im, Florian Marks, Hagen Frickmann, Jürgen May
BACKGROUND: Non-typhoidal Salmonella (NTS) cause the majority of bloodstream infections in Ghana, however the mode of transmission and source of invasive NTS in Africa are poorly understood. This study compares NTS from water sources and invasive bloodstream infections in rural Ghana. METHODS: Blood from hospitalised, febrile children and samples from drinking water sources were analysed for Salmonella spp. Strains were serotyped to trace possible epidemiological links between human and water-derived isolates...
January 19, 2018: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29351187/high-proportions-of-multidrug-resistant-acinetobacter-spp-isolates-in-a-district-in-western-india-a-four-year-antibiotic-susceptibility-study-of-clinical-isolates
#2
Ingvild Odsbu, Smita Khedkar, Uday Khedkar, Sandeep S Nerkar, Ashok J Tamhankar, Cecilia Stålsby Lundborg
The purpose of the study was to determine the proportions of multidrug-resistant (MDR) Acinetobacter spp. isolates from the district of Nashik in Western India during the period from 2011-2014. Antibacterial susceptibility testing of isolates from inpatients and outpatients was performed using Kirby-Bauer disc diffusion method to determine inhibitory zone diameters. Proportions of non-susceptible isolates were calculated from the antibacterial susceptibility data. MDR was defined as an isolate being non-susceptible to at least one antibacterial agent in at least three antibacterial categories...
January 19, 2018: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29344356/risk-factors-and-outcomes-for-multidrug-resistant-gram-negative-bacilli-bacteremia
#3
Swati Patolia, Getahun Abate, Nirav Patel, Setu Patolia, Sharon Frey
Background: The incidence of multidrug-resistant (MDR) organisms is increasing along with mortality. Identifying risk factors for the development of MDR Gram-negative bacilli (GNB) bacteremia could greatly impact patient care and management. Methods: Data from the electronic health record of patients with GNB over 13-month period were collected at a single university medical center. Baseline demographic data, risk factor, microbiological data, recurrence of bacteremia, and mortality were recorded...
January 2018: Therapeutic Advances in Infectious Disease
https://www.readbyqxmd.com/read/29342216/in-vitro-activity-of-novel-glycopolymer-against-clinical-isolates-of-multidrug-resistant-staphylococcus-aureus
#4
Vidya P Narayanaswamy, Scott A Giatpaiboon, John Uhrig, Paul Orwin, William Wiesmann, Shenda M Baker, Stacy M Townsend
The incidence of multidrug-resistant (MDR) organisms, including methicillin-resistant Staphylococcus aureus (MRSA), is a serious threat to public health. Progress in developing new therapeutics is being outpaced by antibiotic resistance development, and alternative agents that rapidly permeabilize bacteria hold tremendous potential for treating MDR infections. A new class of glycopolymers includes polycationic poly-N (acetyl, arginyl) glucosamine (PAAG) is under development as an alternative to traditional antibiotic strategies to treat MRSA infections...
2018: PloS One
https://www.readbyqxmd.com/read/29339383/new-shuttle-vectors-for-gene-cloning-and-expression-in-multidrug-resistant-acinetobacter-species
#5
Massimiliano Lucidi, Federica Runci, Giordano Rampioni, Emanuela Frangipani, Livia Leoni, Paolo Visca
Understanding bacterial pathogenesis requires adequate genetic tools to assess the role of individual virulence determinants by mutagenesis and complementation assays, as well as for homologous and heterologous expression of cloned genes. Our knowledge of Acinetobacter baumannii pathogenesis has so far been limited by the scarcity of genetic tools to manipulate multi drug resistant (MDR) epidemic strains which are responsible for most of infections. Here, we report the construction of new multi-purpose shuttle plasmids, namely pVRL1 and pVRL2, which can efficiently replicate in Acinetobacter sp...
January 16, 2018: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29337703/new-antibiotics-for-ventilator-associated-pneumonia
#6
Matteo Bassetti, Antionio Vena, Nadia Castaldo, Elda Righi, Maddalena Peghin
PURPOSE OF REVIEW: Ventilator-associated pneumonia (VAP) caused by multidrug-resistant (MDR) bacteria represents a global emerging problem. Delayed prescription of an adequate treatment for VAP has been associated with higher morbidity and mortality. New molecules have been developed to face the need of compounds that are active against resistant Gram-positive and Gram-negative pathogens. The aim of this review is to summarize the current scenario of new therapeutic options for the treatment of VAP...
January 13, 2018: Current Opinion in Infectious Diseases
https://www.readbyqxmd.com/read/29334931/in-vitro-antibacterial-and-antibiotic-modifying-activity-of-crude-extract-fractions-and-3-4-7-trihydroxyflavone-from-myristica-fragrans-houtt-against-mdr-gram-negative-enteric-bacteria
#7
Joachim K Dzotam, Ingrid Konga Simo, Gabin Bitchagno, Ilhami Celik, Louis P Sandjo, Pierre Tane, Victor Kuete
BACKGROUND: Nutmeg is the seed kernel inside the fruit of Myristica fragrans Houtt. (Myristicaceae). It possesses various pharmacological activities but is used in Cameroon only for its flavor in making cakes. The present study thus aimed to investigate the in vitro antibacterial activity and antibiotic modifying activities of crude seed kernel methanol extract (MFS), fractions (MFSa-e) as well as 3',4',7-trihydroxyflavone from Myristica fragrans against a panel of multi-drug resistant (MDR) Gram-negative bacteria...
January 15, 2018: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/29332216/characteristics-of-arg-carrying-plasmidome-in-the-cultivable-microbial-community-from-wastewater-treatment-system-under-high-oxytetracycline-concentration
#8
Yanhong Shi, Hong Zhang, Zhe Tian, Min Yang, Yu Zhang
Studies on antibiotic production wastewater have shown that even a single antibiotic can select for multidrug resistant bacteria in aquatic environments. It is speculated that plasmids are an important mechanism of multidrug resistance (MDR) under high concentrations of antibiotics. Herein, two metagenomic libraries were constructed with plasmid DNA extracted from cultivable microbial communities in a biological wastewater treatment reactor supplemented with 0 (CONTROL) or 25 mg/L of oxytetracycline (OTC-25)...
January 13, 2018: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29325009/efficient-generation-of-complete-sequences-of-mdr-encoding-plasmids-by-rapid-assembly-of-minion-barcoding-sequencing-data
#9
Ruichao Li, Miaomiao Xie, Ning Dong, Dachuan Lin, Xuemei Yang, Marcus Ho Yin Wong, Edward Wai-Chi Chan, Sheng Chen
Background: Multidrug resistance (MDR)-encoding plasmids are considered major molecular vehicles responsible for transmission of antibiotic resistance genes among bacteria of the same or different species. Delineating the complete sequences of such plasmids could provide valuable insight into the evolution and transmission mechanisms underlying bacterial antibiotic resistance development. However, due to the presence of multiple repeats of mobile elements, complete sequencing of MDR plasmids remains technically complicated, expensive and time-consuming...
January 9, 2018: GigaScience
https://www.readbyqxmd.com/read/29319523/temperature-ph-and-trimethoprim-sulfamethoxazole-are-potent-inhibitors-of-biofilm-formation-by-stenotrophomonas-maltophilia-clinical-isolates
#10
Marjan Biočanin, Haowa Madi, Zorica Vasiljević, Milan Kojić, Branko Jovčić, Jelena Lozo
Stenotrophomonas maltophilia, an opportunistic pathogen usually connected with healthcare-associated infections, is an environmental bacterium. Intrinsic resistance to multiple antibiotics, with different virulence determinants in the last decade classified this bacterium in the group of global multiple drug resistant (MDR) organism. S. maltophilia clinical isolates, were collected from tertiary care pediatric hospital in Belgrade, Serbia to investigate influence of different factors on biofilm formation, kinetics of biofilm formation for strong biofilm producers and effect of trimethoprim-sulfamethoxazole (TMP/SMX) on formed biofilm...
December 4, 2017: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/29313864/trend-of-mdr-microorganisms-isolated-from-the-biological-samples-of-patients-with-hai-and-from-the-surfaces-around-that-patient
#11
Vincenza La Fauci, Gaetano Bruno Costa, Adriana Arena, Elvira Ventura Spagnolo, Cristina Genovese, Maria Angela Palamara, Raffaele Squeri
Healthcare-associated infections (HAI) continue to be a major public health concern. A number of epidemiologically relevant HAI microorganisms are multidrug-resistant (MDR) germs that can spread rapidly and/or carry multiple resistance to antibiotics. They are the cause of high mortality and possible nosocomial epidemics. For this reason, we implemented microbiological surveillance acquiring samples from patients with HAI and environmental samples from the surfaces surrounding those patients. A retrospective study was carried out from January 2014 to December 2016 in two departments of the University Hospital in Messina, Italy: the Microbiology and the Hygiene Laboratories...
January 9, 2018: New Microbiologica
https://www.readbyqxmd.com/read/29313517/the-prevalence-of-exoenzyme-s-gene-in-multidrug-sensitive-and-multidrug-resistant-pseudomonas-aeruginosa-clinical-strains
#12
Tomasz Bogiel, Aleksander Deptuła, Joanna Kwiecińska-Piróg, Małgorzata Prażyńska, Agnieszka Mikucka, Eugenia Gospodarek-Komkowska
Pseudomonas aeruginosa rods are one of the most commonly isolated microorganisms from clinical specimens, usually responsible for nosocomial infections. Antibiotic-resistant P. aeruginosa strains may present reduced expression of virulence factors. This fact may be caused by appropriate genome management to adapt to changing conditions of the hospital environment. Virulence factors genes may be replaced by those crucial to survive, like antimicrobial resistance genes. The aim of this study was to evaluate, using PCR, the occurrence of exoenzyme S-coding gene (exoS) in two distinct groups of P...
December 4, 2017: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/29310949/antibiotic-resistance-rates-for-pseudomonas-aeruginosa-clinical-respiratory-and-bloodstream-isolates-among-the-veterans-affairs-healthcare-system-from-2009-to-2013
#13
Haley J Appaneal, Aisling R Caffrey, Lan Jiang, David Dosa, Leonard A Mermel, Kerry L LaPlante
Pseudomonas aeruginosa is a major cause of healthcare-associated infections and resistance among isolates is an increasing burden. The study purpose was to describe national resistance rates for clinical P. aeruginosa respiratory and bloodstream cultures and the prevalence of multidrug-resistant (MDR) P. aeruginosa within the Veterans Affairs (VA). MDR was defined as non-susceptibility to at least one drug in at least 3 of the following 5 categories: carbapenems, extended-spectrum cephalosporins, aminoglycosides, and piperacillin/tazobactam...
December 6, 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/29307122/investigation-of-the-antibiotic-resistance-and-biofilm-formation-of-staphylococcus-pseudintermedius-strains-isolated-from-canine-pyoderma
#14
Valentina Stefanetti, Annalisa Bietta, Luisa Pascucci, Maria Luisa Marenzoni, Mauro Coletti, Maria Pia Franciosini, Fabrizio Passamonti, Patrizia Casagrande Proietti
The aim of the present study was to investigate the antibiotic resistance and bio lm formation among a collection of 51 clinical isolates of Staphylococcus pseudintermedius collected from canine pyoderma. All isolates were tested for the susceptibility to a panel of 14 antimicrobial agents by the disk di usion method in Müeller-Hinton agar. Oxacillin resistance was detected by subculture on oxacillin screening agar base. Bio lm formation was investigated by the Microtitre Plate test (MtP) and for some strains by transmission electron microscopy (TEM)...
December 29, 2017: Veterinaria Italiana
https://www.readbyqxmd.com/read/29305368/treatment-of-a-complex-orthopaedic-infection-due-to-extensively-drug-resistant-pseudomonas-aeruginosa
#15
Sidra Hassan, Mani D Kahn, Nidhi Saraiya, Priya Nori
According to the Centers for Disease Control and Prevention (CDC), approximately 51 000 healthcare-associated infections caused by Pseudomonas aeruginosa occur annually in the USA, more than 6000 of which (13%) are caused by multidrug resistant (MDR) strains. Ceftolozane/tazobactam (TOL/TAZ) (Zerbaxa) was approved by the US Food and Drug Administration (FDA) in December 2014 for the treatment of complicated intra-abdominal and urinary tract infections. At this time, clinical data on the role of TOL/TAZ treatment outside of FDA-approved indications is limited...
January 5, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29304746/a-multi-center-study-on-the-risk-factors-of-infection-caused-by-multi-drug-resistant-acinetobacter-baumannii
#16
Huiping Huang, Borong Chen, Gang Liu, Jing Ran, Xianyu Lian, Xinhua Huang, Nan Wang, Zhengjie Huang
BACKGROUND: Acinetobacter baumannii (AB) is critical for healthcare-associated infections (HAI) with significant regional differences in the resistance rate, but its risk factors and infection trends has not been well studied. We aimed to explore the risk factors, epidemiological characteristics and resistance of multidrug-resistant Acinetobacter baumannii (MDR-AB) in intensive care unit inpatients. METHODS: Data of patients with MDR-AB (195 cases), and with antibiotic-sensitive AB infection (294 cases, control) during January to December, 2015 in three medical centers in Xiamen, China were conducted and analyzed in the present retrospective study...
January 5, 2018: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29299886/risk-factors-of-infectious-complications-after-flexible-uretero-renoscopy-with-laser-lithotripsy
#17
Cagri Senocak, Cihat Ozcan, Tolga Sahin, Gulden Yilmaz, Ekrem Ozyuvali, Selcuk Sarikaya, Berkan Resorlu, Ural Oguz, Omer Faruk Bozkurt, Ali Unsal, Oztug Adsan
PURPOSE: To determine the perioperative risk factors for postoperative infections among patients undergoing flexible uretero-renoscopy with laser lithotripsy (FURSLL). In addition, the resistance patterns of pathogens isolated from positive preoperative urine cultures were investigated. MATERIALS AND METHODS: We retrospectively reviewed data from 492 consecutive patients who had undergone FURSLL for stone disease in our department. Postoperative infection was defined as fever (? 38°C) with pyuria (? 10 white blood cells per high power field), or systemic inflammatory response syndrome, or sepsis...
January 4, 2018: Urology Journal
https://www.readbyqxmd.com/read/29290748/therapeutic-drug-monitoring-of-prolonged-infusion-aztreonam-for-multi-drug-resistant-pseudomonas-aeruginosa-a-case-report
#18
Jeffrey J Cies, Richard J LaCoursiere, Wayne S Moore, Arun Chopra
Aztreonam, a broad-spectrum monobactam, is typically reserved for multidrug resistant (MDR) infections. Pharmacokinetic (PK) data to guide dosing in children, however, are limited to healthy volunteers or nonintensive care unit (ICU) patients. Impaired antibiotic delivery into tissue remains a major concern and may explain the high morbidity and mortality associated with MDR infections. Therefore, evaluating the PK changes in pediatric ICU patients is necessary to elucidate the most appropriate antimicrobial regimen...
November 2017: Journal of Pediatric Pharmacology and Therapeutics: JPPT: the Official Journal of PPAG
https://www.readbyqxmd.com/read/29288723/intravenous-colistin-combination-antimicrobial-treatment-versus-monotherapy-a-systematic-review-and-meta-analysis
#19
REVIEW
Konstantinos Z Vardakas, Andreas D Mavroudis, Maria Georgiou, Matthew E Falagas
BACKGROUND: To evaluate whether IV colistin in combination with other antibiotics (IVCC) was associated with lower mortality compared to colistin monotherapy (IVCM) and identify factors influencing study outcomes. METHODS: PubMed and Scopus were searched till November 2016. Studies were included if they evaluated adult patients with MDR/XDR Gram-negative infections and reported comparative mortality data (adjusted and unadjusted) for patients receiving IVCC versus IVCM...
December 27, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/29285477/pseudomonas-aeruginosa-producing-metallo-%C3%AE-lactamases-vim-imp-sme-and-aim-in-the-clinical-isolates-of-intensive-care-units-a-university-hospital-in-isfahan-iran
#20
Farzin Khorvash, Mohammadreza Yazdani, Shiva Shabani, Aliasghar Soudi
Background: Pseudomonas aeruginosa is a severe challenge for antimicrobial therapy, due to the chromosomal mutations or exhibition of intrinsic resistance to various antimicrobial agents such as most β-lactams. We undertook this study to evaluate the existence of SME, IMP, AIM, and VIM metallo-β-lactamases (MBL) encoding genes among P. aeruginosa strains isolated from Intensive Care Unit (ICU) patients in Al-Zahra Hospital in Isfahan, Iran. Materials and Methods: In a retrospective cross-sectional study that was conducted between March 2012 and April 2013, a total of 48 strains of P...
2017: Advanced Biomedical Research
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