keyword
MENU ▼
Read by QxMD icon Read
search

Enterococcus faecalis

keyword
https://www.readbyqxmd.com/read/28334141/distribution-of-antimicrobial-resistance-determinants-virulence-associated-factors-and-crispr-loci-in-isolates-of-enterococcus-faecalis-from-various-settings-and-genetic-lineages
#1
Iwona Gawryszewska, Katarzyna Malinowska, Alicja Kuch, Dorota Chrobak-Chmiel, Lucja Laniewska-Trokenheim, Waleria Hryniewicz, Ewa Sadowy
Enterococcus faecalis represents an important factor of hospital-associated infections (HAIs). The knowledge on its evolution from a commensal to an opportunistic pathogen is still limited, thus we performed a study to characterize distribution of factors that may contribute to this adaptation. Using a collection obtained from various settings (hospitalized patients, community carriers, animals, fresh food, sewage, water) we investigated differences in antimicrobial susceptibility, distribution of antimicrobial resistance genes, virulence-associated determinants and phenotypes, and CRISPR loci in the context of the clonal relatedness of isolates...
March 1, 2017: Pathogens and Disease
https://www.readbyqxmd.com/read/28333758/cutaneous-burn-injury-modulates-urinary-antimicrobial-peptide-responses-and-the-urinary-microbiome
#2
Jennifer K Plichta, Casey J Holmes, Vanessa Nienhouse, Michelle Puszynski, Xiang Gao, Qunfeng Dong, Huaiying Lin, James Sinacore, Michael Zilliox, Evelyn Toh, David E Nelson, Richard L Gamelli, Katherine A Radek
OBJECTIVES: Characterization of urinary bacterial microbiome and antimicrobial peptides after burn injury to identify potential mechanisms leading to urinary tract infections and associated morbidities in burn patients. DESIGN: Retrospective cohort study using human urine from control and burn subjects. SETTING: University research laboratory. PATIENTS: Burn patients. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: Urine samples from catheterized burn patients were collected hourly for up to 40 hours...
March 22, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28333351/ecological-impact-of-ciprofloxacin-on-commensal-enterococci-in-healthy-volunteers
#3
Victoire de Lastours, Elena Maugy, Vincent Mathy, Françoise Chau, Benjamin Rossi, François Guérin, Vincent Cattoir, Bruno Fantin
Background: The ecological impact of ciprofloxacin on commensal enterococci is unknown. Methods: Forty-eight healthy volunteers received ciprofloxacin from day (D) 0 to D14; stools were collected on D7, D14 and D42. Fluoroquinolone-susceptible and -resistant enterococci (FQ-SE and FQ-RE) were detected and quantified by culture, and identified by MALDI-TOF MS. The relative abundance of FQ-RE over FQ-SE was determined. The genetic basis of fluoroquinolone resistance was deciphered by partial sequencing of gyrA and parC genes...
March 4, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28332345/high-incidence-of-virulence-factors-among-clinical-enterococcus-faecalis-isolates-in-southwestern-iran
#4
Hamid Heidari, Somayeh Hasanpour, Hadi Sedigh Ebrahim-Saraie, Mohammad Motamedifar
BACKGROUND: Over the past two decades, enterococci have emerged as an important agent responsible for hospital acquired infection. Several virulence factors contribute to the adherence, colonization, evasion of the host immune response, and pathogenicity and severity of the infection. Enterococcus faecalis is the most common and virulent species causing infections in hospitalized patients. The aim of the present study was to examine the prevalence of genes encoding virulence factors and antimicrobial resistance patterns of E...
March 13, 2017: Infection & Chemotherapy
https://www.readbyqxmd.com/read/28326156/porphyromonas-gingivalis-is-the-most-abundant-species-detected-in-coronary-and-femoral-arteries
#5
J-L C Mougeot, C B Stevens, B J Paster, M T Brennan, P B Lockhart, F K B Mougeot
An association between oral bacteria and atherosclerosis has been postulated. A limited number of studies have used 16S RNA gene sequencing-based metagenomics approaches to identify bacteria at the species level from atherosclerotic plaques in arterial walls. The objective of this study was to establish detailed oral microbiome profiles, at both genus and species level, of clinically healthy coronary and femoral artery tissues from patients with atherosclerosis. Tissue specimens were taken from clinically non-atherosclerotic areas of coronary or femoral arteries used for attachment of bypass grafts in 42 patients with atherosclerotic cardiovascular disease...
2017: Journal of Oral Microbiology
https://www.readbyqxmd.com/read/28321326/first-canadian-case-report-of-kidney-transplantation-from-an-hiv-positive-donor-to-an-hiv-positive-recipient
#6
Georges Ambaraghassi, Héloïse Cardinal, Daniel Corsilli, Claude Fortin, Marie-Chantal Fortin, Valérie Martel-Laferrière, Jacques Malaise, Michel R Pâquet, Danielle Rouleau
RATIONALE: Kidney transplantation has become standard of care for carefully selected patients living with human immunodeficiency virus (HIV) and end-stage renal disease (ESRD) in the highly active antiretroviral therapy (HAART) era. American and European prospective cohort studies have reported similar patient and graft survival compared with HIV-negative kidney transplant recipients. Despite an increased rate of acute rejection, partially due to drug interactions, HIV immunovirologic parameter generally remains under control during immunosuppression...
2017: Canadian Journal of Kidney Health and Disease
https://www.readbyqxmd.com/read/28320944/negative-allosteric-regulation-of-enterococcus-faecalis-small-alarmone-synthetase-relq-by-single-stranded-rna
#7
Jelena Beljantseva, Pavel Kudrin, Liis Andresen, Victoria Shingler, Gemma C Atkinson, Tanel Tenson, Vasili Hauryliuk
The alarmone nucleotides guanosine pentaphosphate (pppGpp) and tetraphosphate (ppGpp), collectively referred to as (p)ppGpp, are key regulators of bacterial growth, stress adaptation, pathogenicity, and antibiotic tolerance. We show that the tetrameric small alarmone synthetase (SAS) RelQ from the Gram-positive pathogen Enterococcus faecalis is a sequence-specific RNA-binding protein. RelQ's enzymatic and RNA binding activities are subject to intricate allosteric regulation. (p)ppGpp synthesis is potently inhibited by the binding of single-stranded RNA...
March 20, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28320885/identification-of-the-lyso-form-n-acyl-intramolecular-transferase-in-low-gc-firmicutes
#8
Krista M Armbruster, Timothy C Meredith
Bacterial lipoproteins are embedded in the cell membrane of both Gram-positive and Gram-negative bacteria where they serve numerous functions central to cell envelope physiology. Lipoproteins are tethered to the membrane by an N-acyl-S-(mono/di)-acyl-glyceryl-cysteine anchor that is variably acylated depending on genera. In several low-GC Gram-positive Firmicutes, a monoacyl-glyceryl-cysteine with an N-terminal fatty acid (known as the lyso form) has been reported, though how it is formed is unknown. Here, through an intergenic complementation rescue assay in Escherichia coli, we report the identification of a common orthologous transmembrane protein in both Enterococcus faecalis and Bacillus cereus capable of forming lyso-form lipoproteins...
March 20, 2017: Journal of Bacteriology
https://www.readbyqxmd.com/read/28320712/efficacy-of-telavancin-alone-and-in-combination-with-ampicillin-in-a-rat-model-of-enterococcus-faecalis-endocarditis
#9
Truc T Tran, Vincent H Tam, Barbara E Murray, Cesar A Arias, Kavindra V Singh
We first assessed telavancin (TLV) pharmacokinetics after a single subcutaneous dose of 35 mg/kg. The pharmacokinetic data were used to predict a TLV dose that simulates human exposure and the efficacy of TLV was then evaluated using TLV 21 mg/kg Q 12 h against Enterococcus faecalis OG1RF (TLV MIC of 0.06 μg/ml) in a rat endocarditis model with an indwelling catheter. Therapy was given for 3 days with TLV, daptomycin (DAP) or ampicillin (AMP) monotherapy and with combinations of TLV plus AMP, AMP plus gentamicin (GEN), and AMP plus ceftriaxone (CRO); rats were sacrificed 24 h after the last dose...
March 20, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28320540/effect-of-using-different-vehicles-on-the-physicochemical-antimicrobial-and-biological-properties-of-white-mineral-trioxide-aggregate
#10
Bruno Cavalini Cavenago, Aldo Enrique Del Carpio-Perochena, Ronald Ordinola-Zapata, Carlos Estrela, Gustavo Pompermaier Garlet, Mario Tanomaru-Filho, Paulo Henrique Weckwerth, Flaviana Bombarda de Andrade, Marco Antonio Hungaro Duarte
INTRODUCTION: This study evaluated the physicochemical, antimicrobial, and biological properties of white mineral trioxide aggregate (MTA) mixed with aqueous and propylene glycol extracts of Arctium lappa L. and Casearia sylvestris Sw. METHODS: The setting-time test was performed according to American Society for Testing and Materials 266/2008 and flowability by American National Standards Institute/American Dental Association 57/2012 standard specifications. The following parameters were assessed: volumetric change by micro-computed tomography; pH level and calcium ion release measured after 3 hours and 1, 3, 7, and 15 days; antimicrobial effect by the dentin decontamination method with intratubular Enterococcus faecalis viability, verified by using confocal laser scanning microscopy; and biocompatibility by histologic-morphometric analyses of inflammatory infiltrate at subcutaneous implant sites after 15, 30, and 60 days...
March 17, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28316949/evaluation-of-the-role-of-probiotics-in-endodontic-treatment-a-preliminary-study
#11
Aarti Bohora, Sharad Kokate
AIMS AND OBJECTIVES: The principal goal of endodontics is the prevention of periapical infection. Acute and chronic apical periodontitis occur due to the persistence of pathogenic microorganisms such as Enterococcus faecalis and Candida albicans harboring the root canal systems of the teeth. The concept of the use of probiotics in addressing endodontic disease is new and has not been studied adequately. On the basis of the success of probiotics in periodontal treatment, this preliminary work was performed (a) to evaluate the antibacterial efficacy of probiotics against common endodontic pathogens, i...
January 2017: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/28316009/safety-assessment-of-commensal-enterococci-from-dogs
#12
Ivana Kubašová, Viola Strompfová, Andrea Lauková
Enterococci form a complex, diverse, and very important group of bacteria from the technological and food safety aspect, or from the health-improving aspect as probiotics. Generally, enterococci are considered to be of low pathogenic potential, which is associated mostly with clinical strains. In these strains, production of virulence factors as well as resistance to many antimicrobial drugs could complicate treatment of nosocomial infections. Because there is a lack of information on incidence of these attributes in animal commensal enterococci, we screened 160 strains originating from feces of clinically healthy dogs in Eastern Slovakia (n = 105)...
March 18, 2017: Folia Microbiologica
https://www.readbyqxmd.com/read/28303818/biofilm-formation-capability-of-enterococcal-strains-causing-urinary-tract-infection-vis-a-vis-colonisation-and-correlation-with-enterococcal-surface-protein-gene
#13
Shubha Garg, Balvinder Mohan, Neelam Taneja
BACKGROUND: Data regarding differences in biofilm formation among urinary isolates of enterococci causing nosocomial infection versus asymptomatic colonisation is lacking. Conflicting data are available for the role of enterococcal surface protein (esp) gene in the development of enterococcal biofilms. MATERIALS AND METHODS: A total of 50 (25 each of asymptomatic bacteriuria and urinary tract infection (UTI) isolates were collected from admitted patients who had nosocomial acquisition of enterococci in urine culture (≥105 cfu/ml)...
January 2017: Indian Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28302771/draft-genome-sequence-of-a-multidrug-resistant-strain-of-enterococcus-faecalis-pm01-isolated-from-the-nest-of-an-american-bushtit-psaltriparius-minimus
#14
Saika Esani, John V H Constable, Tricia A Van Laar
Pathogenic microorganisms associated with avian nests may detrimentally impact parental health and nest success for the nest primary users, potentially neighboring avian or terrestrial species, including humans. Here, we report the genome sequence of Enterococcus faecalis strain PM01, isolated from a failed nest of American bushtits, Psaltriparius minimus.
March 16, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28298975/evaluation-of-antimicrobial-and-antifungal-efficacy-of-chitosan-as-endodontic-irrigant-against-enterococcus-faecalis-and-candida-albicans-biofilm-formed-on-tooth-substrate
#15
Pankaj Yadav, Sarika Chaudhary, Rajendra K Saxena, Sangeeta Talwar, Sudha Yadav
BACKGROUND: Bacterial biofilms formed on the root canal wall are often difficult to remove. This study aimed to evaluate the cytotoxic effect and antibacterial efficacy of chitosan when used as root canal irrigant against E. Faecalis and Candida albicans biofilm formed on tooth substrate. MATERIAL AND METHODS: The present study evaluated antibacterial effect of 0.25% Chitosan, 0.5% Chitosan, 2% chlorhexidine and 3% sodium hypochlorite against Enterococcus faecalis and Candida Albicans...
March 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28298381/purulent-pericarditis-as-a-complication-of-bacteraemic-enterococcus-faecalis-urinary-tract-infection
#16
Fredy Nehme, Jane Gitau, Jing Liu
Purulent pericarditis is a rare clinical entity in the modern antibiotic era. The most common portal of entry is thought to be direct extension from a primary lung source and is usually caused by Staphylococcus aureus, Streptococcus pneumoniae or Haemophilus influenzae We report the case of a man aged 69 years who presented with purulent pericarditis due to Enterococcus faecalis likely caused by haematogenous spread from a urinary tract source. Urgent pericardiocentesis was vital and restored his haemodynamic stability...
March 15, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28294701/the-impact-of-a-940%C3%A2-nm-diode-laser-with-radial-firing-tip-and-bare-end-fiber-tip-on-enterococcus-faecalis-in-the-root-canal-wall-dentin-of-bovine-teeth-an-in-vitro-study
#17
Ruth Schulte-Lünzum, Norbert Gutknecht, Georg Conrads, Rene Franzen
OBJECTIVE: This in vitro study aimed to compare the bactericidal effect of two different laser delivery systems, a radial firing tip (RFT) and bare end fiber tip (BFT) used with the 940 nm diode laser on Enterococcus faecalis inoculated onto bovine radicular dentin. MATERIALS AND METHODS: A total of 100 bovine dentin slices with a defined thickness of 500 and 1000 μm were prepared. They were assigned into four test groups together with untreated samples served as control for each slice thickness...
March 14, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28293958/successful-salvage-treatment-of-native-valve-enterococcus-faecalis-infective-endocarditis-with-telavancin-two-case-reports
#18
Mickala M Thompson, Ali Hassoun
Infective endocarditis (IE) one-year mortality rates approach 40%. Here, we report two native valve Enterococcus faecalis IE cases in patients successfully treated with telavancin. An 88-year-old with mitral valve endocarditis and a penicillin allergy, initially treated with intravenous vancomycin, was switched to telavancin. A 69-year-old, who previously received amoxicillin and intravenous vancomycin for presumed enterococcal bacteraemia, was diagnosed with dual valve endocarditis for which he received telavancin...
March 15, 2017: Infectious Diseases
https://www.readbyqxmd.com/read/28290115/sonication-of-arthroplasty-implants-improves-accuracy-of-periprosthetic-joint-infection-cultures
#19
REVIEW
Adam C Rothenberg, Alan E Wilson, John P Hayes, Michael J O'Malley, Brian A Klatt
BACKGROUND: There is evidence that sonication of explanted prosthetic hip and knee arthroplasty components with culture of the sonication fluid may enhance diagnostic sensitivity. Previous studies on the use of implant sonicate cultures have evaluated diagnostic thresholds but did not elaborate on the clinical importance of positive implant sonicate cultures in the setting of presumed aseptic revisions and did not utilize consensus statements on periprosthetic joint infection (PJI) diagnosis when defining their gold standard for infection...
March 13, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28286459/antimicrobial-properties-of-copper-nanoparticles-and-amino-acid-chelated-copper-nanoparticles-produced-by-using-a-soya-extract
#20
I DeAlba-Montero, Jesús Guajardo-Pacheco, Elpidio Morales-Sánchez, Rene Araujo-Martínez, G M Loredo-Becerra, Gabriel-Alejandro Martínez-Castañón, Facundo Ruiz, M E Compeán Jasso
This paper reports a comparison of the antibacterial properties of copper-amino acids chelates and copper nanoparticles against Escherichia coli, Staphylococcus aureus, and Enterococcus faecalis. These copper-amino acids chelates were synthesized by using a soybean aqueous extract and copper nanoparticles were produced using as a starting material the copper-amino acids chelates species. The antibacterial activity of the samples was evaluated by using the standard microdilution method (CLSI M100-S25 January 2015)...
2017: Bioinorganic Chemistry and Applications
keyword
keyword
29440
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"