Publications
| Title | Abstract | Year Filter | PMID(sorted ascending) Filter |
|---|
| antimicrobial action of calcium hydroxide-based endodontic sealers after setting, against e. faecalis biofilm. | enterococcus faecalis are gram positive bacteria that can mostly resist endodontic therapy, inducing persistent infection in the root canal system. endodontic sealers with antimicrobial activity may help eliminate residual microorganisms that survive endodontic treatment. the present study aimed at comparing the antimicrobial activity of acroseal, sealapex and ah plus endodontic sealers in an in vitro biofilm model. bovine dentin specimens (144) were prepared, and twelve blocks for each sealer a ... | 2016 | 26981759 |
| antimicrobial metabolites from a marine-derived actinomycete in vietnam's east sea. | two new compounds, a quinoline alkaloid (1) and a 1,4-dioxane derivative (2), were isolated from culture broth of the marine-derived actinomycete micromonospora sp. (strain g019) by bioassay-guided fractionation. this actinomycete strain was isolated from sediment, collected at cát bà peninsula, vietnam. the taxonomic identification was achieved by analysis of 16s rrna gene sequences. on the basis of morphological and phylogenetic evidence, strain g019 was assigned to the genus micromonospora. t ... | 2016 | 26996018 |
| a three-year survey of the antimicrobial resistance of microorganisms at a chinese hospital. | the present retrospective study aimed to investigate the antibiotic susceptibility of bacteria at shanghai first people's hospital (shanghai, china) between 2009 and 2011. an increasing trend of antibiotic resistance was observed in this hospital between 2009 and 2011. escherichia coli, acinetobacter baumannii and staphylococcus aureus were the most prevalent resistant strains. antimicrobial susceptibility was detected using standard kirby-bauer disk diffusion and analyzed using world health org ... | 2016 | 26997986 |
| drug and vaccine development for the treatment and prevention of urinary tract infections. | urinary tract infections (uti) are among the most common bacterial infections in humans, affecting millions of people every year. uti cause significant morbidity in women throughout their lifespan, in infant boys, in older men, in individuals with underlying urinary tract abnormalities, and in those that require long-term urethral catheterization, such as patients with spinal cord injuries or incapacitated individuals living in nursing homes. serious sequelae include frequent recurrences, pyelon ... | 2016 | 26999391 |
| quantification of lipoteichoic acid contents and cultivable bacteria at the different phases of the endodontic retreatment. | the infectious content of root canals, including bacteria and lipoteichoic acid (lta), cause injuries to the periapical tissues. the purpose of this clinical study was to quantify the levels of both lta and cultivable bacteria at the different phases of endodontic retreatment (er) of teeth with post-treatment apical periodontitis. it also aimed to investigate the presence of gram-positive microorganisms before and after chemomechanical preparation (cmp) and intracanal medication (icm). | 2016 | 27000273 |
| oritavancin activity tested against molecularly characterized staphylococci and enterococci displaying elevated linezolid mic results. | oritavancin (mic50/90, 0.03/0.06 to 0.12 μg/ml) had potent activity against linezolid-resistant staphylococci, as well as enterococcus faecalis and enterococcus faecium (oritavancin mic50/90, 0.015/0.12 μg/ml against both species). all linezolid-resistant isolates were inhibited by oritavancin at ≤0.12 μg/ml. these results confirmed the absence of cross-resistance between linezolid and oritavancin in staphylococci and enterococci. | 2016 | 27001823 |
| in vitro activity of a polyhexanide-betaine solution against high-risk clones of multidrug-resistant nosocomial pathogens. | to determine the in vitro activity of a polyhexanide-betaine solution against collection strains and multidrug-resistant (mdr) nosocomial isolates, including high-risk clones. | 2017 | 27004429 |
| 2-hydroxyisocaproic acid is bactericidal in human dental root canals ex vivo. | to compare the activity of 2-hydroxyisocaproic acid (hica), calcium hydroxide (ca(oh)2 ) and chlorhexidine digluconate (chg) against enterococcus faecalis t-75359 (root canal isolate) in the root canals of extracted human teeth. | 2017 | 27004733 |
| influence of temperature on the antibacterial activity of sodium hypochlorite. | the aim of this study was to compare the antimicrobial activity of 5.25% naocl, hypoclean and chlor-xtra at 20 °c and 45 °c in bovine root dentin. one-hundred-and-seventy dentin tubes prepared from bovine maxillary incisors were infected for 21 days with enterococcus faecalis. the specimens were divided into the following groups: 1. 5.25% naocl 20 °c; 2. hypoclean 20 °c; 3. chlor-xtra 20 °c; 4. 5.25% % naocl 45 °c; 5. hypoclean 45 °c; 6. chlor-xtra 45 °c; 7. positive control; 8. negative control ... | 2017 | 27007342 |
| thymidylate limitation potentiates cephalosporin activity toward enterococci via an exopolysaccharide-based mechanism. | multidrug resistant enterococci are major causes of nosocomial infections. prior therapy with cephalosporins increases the risk of developing an enterococcal infection due to the intrinsic resistance of enterococci to these antibiotics. while progress has been made toward understanding the genetic and biochemical mechanisms of cephalosporin resistance, available data indicate that as-yet-unidentified resistance factors must exist. here, we describe results of a screen to identify small molecules ... | 2016 | 27008338 |
| antibacterial effect of silver (i) carbohydrate complexes on oral pathogenic key species in vitro. | it was the aim of this study to evaluate the antibacterial impact of two silver(i) carbohydrate complexes with tripodal thioglycosides, namely tris[2-(β-d-thio-glucopyranosyl)ethyl]-amine-silver(i)-nitrate (3) and tris[2-(α-d-thio-manno-pyranosyl)ethyl]-amine-silver(i)-nitrate (4), on five oral pathogenic bacterial strains. furthermore, cytocompatibility was tested using human gingival fibroblasts (hgf). | 2016 | 27009305 |
| deletion of fabn in enterococcus faecalis results in unsaturated fatty acid auxotrophy and decreased release of inflammatory cytokines. | the gram-positive bacterium enterococcus faecalis can cause life-threatening infections and is resistant to several commonly used antibiotics. the type ii fatty acid pathway in bacteria is discussed as a potential target for antimicrobial therapy. however, it was shown that inhibition or deletion of its enzymes can be rescued in gram-positive bacteria by supplementation with fatty acids. here we show that by deletion of the fabn gene, which is essential for unsaturated fatty acid (ufa) synthesis ... | 2016 | 27009913 |
| enhancing the antibacterial activity of the gold standard intracanal medicament with incorporation of silver zeolite: an in vitro study. | enterococcus faecalis is a persistent organism that plays a major role in the etiology of persistent periradicular lesions after root canal treatment has been associated with different forms of periradicular disease including primary endodontic infections and persistent infections. the present study compares the antibacterial activities of calcium hydroxide, calcium hydroxide mixed with silver zeolite, and calcium hydroxide mixed with 2% chlorhexidine against e. faecalis using direct contact tes ... | 2017 | 27011937 |
| susceptibility of contemporary isolates to fosfomycin: a systematic review of the literature. | the aim of this review was to evaluate the susceptibility of contemporary gram-positive and gram-negative bacteria to fosfomycin. pubmed and scopus databases were systematically searched to identify studies published in print or electronically from january 2010 until june 2015. in total, 84 studies were selected. susceptibility to fosfomycin of staphylococcus aureus ranged between 33.2% and 100% (frequency=91.7%, 95% confidence interval 88.7-94.9%), of enterococcus spp. from 30% to 100% (enteroc ... | 2016 | 27013000 |
| surveillance for linezolid resistance via the zyvox® annual appraisal of potency and spectrum (zaaps) programme (2014): evolving resistance mechanisms with stable susceptibility rates. | the objective of this study was to report the linezolid in vitro activity observed during the zyvox(®) annual appraisal of potency and spectrum (zaaps) programme for 2014. | 2016 | 27013481 |
| community acquired enterococcal urinary tract infections and antibiotic resistance profile in north india. | urinary tract infections (utis) remain a major problem both in hospitalized and outdoor patients. multidrug-resistant enterococci are emerging as a major nosocomial pathogen with increasing frequency. however, the incidence of community-acquired enterococcal infections and species prevalent in india is not thoroughly investigated. | 2017 | 27013814 |
| molecular characterization of virulence genes in vancomycin-resistant and vancomycin-sensitive enterococci. | the aim of this study was to find out the correlation between presence of virulence (gelatinase [gel e], enterococcal surface protein [esp], cytolysin a [cyl a], hyaluronidase [hyl], and aggregation substance [asa1]) and vancomycin-resistant genes (van a and van b) in enterococci, with their phenotypic expression. | 2017 | 27013840 |
| effect of laser-activated irrigation on biofilms in artificial root canals. | to evaluate the antimicrobial effect of laser-activated irrigation (lai) on biofilms formed in simulated root canals. | 2017 | 27014832 |
| dietary administration of probiotics to sows and/or their neonates improves the reproductive performance, incidence of post-weaning diarrhea and histopathological parameters in the intestine of weaned piglets. | probiotics have gained considerable attention with respect to their beneficial effects on livestock performance and health. the most significant effects of probiotics on the gut microbiota and the host animals take place when they are included in diets during particularly stressful periods such as weaning and/or at the beginning of the lactation period. the probiotics bacillus mesentericus strain to-a at 1 × 10(8) colony forming units (cfu)/g, clostridium butyricum strain to-a at 1 × 10(8) cfu ... | 2016 | 27018090 |
| bactericidal activity and mechanism of action of copper-sputtered flexible surfaces against multidrug-resistant pathogens. | using direct current magnetron sputtering (dcms), we generated flexible copper polyester surfaces (cu-pes) and investigated their antimicrobial activity against a range of multidrug-resistant (mdr) pathogens including eight gram-positive isolates (three methicillin-resistant staphylococcus aureus [mrsa], four vancomycin-resistant enterococci, one methicillin-resistant staphylococcus epidermidis) and four gram-negative strains (one extended-spectrum β-lactamase-producing [esbl] escherichia coli, ... | 2016 | 27020284 |
| spatial organization of cell wall-anchored proteins at the surface of gram-positive bacteria. | bacterial surface proteins constitute an amazing repertoire of molecules with important functions such as adherence, invasion, signalling and interaction with the host immune system or environment. in gram-positive bacteria, many surface proteins of the "lpxtg" family are anchored to the peptidoglycan (pg) by an enzyme named sortase. while this anchoring mechanism has been clearly deciphered, less is known about the spatial organization of cell wall-anchored proteins in the bacterial envelope. h ... | 2016 | 27025379 |
| comparison of hospital room surface disinfection using a novel ultraviolet germicidal irradiation (uvgi) generator. | the estimated 721,800 hospital acquired infections per year in the united states have necessitated development of novel environmental decontamination technologies such as ultraviolet germicidal irradiation (uvgi). this study evaluated the efficacy of a novel, portable uvgi generator (the torch, chlordisys solutions, inc., lebanon, nj) to disinfect surface coupons composed of plastic from a bedrail, stainless steel, chrome-plated light switch cover, and a porcelain tile that were inoculated with ... | 2016 | 27028152 |
| posaida: presence of staphylococcus aureus/mrsa and enterococcus/vre in danish ambulances. a cross-sectional study. | every year approximately one out of ten danish patients contracts a healthcare associated infection (hai). staphylococcus aureus and enterococcus are prominent in the group of pathogenic bacteria that underlie hais, causing unnecessary inconvenience and prolonging hospitalization. bacterial colonization often occurs due to indirect patient-to-patient transmission, caused by poor hygiene compliance. this study aims to determine the level of contamination with s. aureus/mrsa and enterococcus/vre o ... | 2016 | 27029410 |
| synthesis variants of quaternary ammonium polyethyleneimine nanoparticles and their antibacterial efficacy in dental materials. | resin-based dental materials allow bacterial growth on their surface and lack antibacterial activity, leading to functional and esthetic failure. quaternary ammonium polyethyleneimine (qpei) nanoparticles (nps) incorporated in resin-based composite at 2% wt/wt have demonstrated prolonged and complete inhibition of bacterial growth. this study focused on optimization of qpei np synthesis to reduce the concentration required for bacterial growth inhibition. the objective here was to enhance antimi ... | 2016 | 27032864 |
| antibacterial effects of n-acetylcysteine against endodontic pathogens. | the success of endodontic treatment depends on the eradication of microorganisms from the root canal system and the prevention of reinfection. the purpose of this investigation was to evaluate the antibacterial and antibiofilm efficacy of n-acetylcysteine (nac), an antioxidant mucolytic agent, as an intracanal medicament against selected endodontic pathogens. minimum inhibitory concentrations (mics) of nac for actinomyces naeslundii, lactobacillus salivarius, streptococcus mutans, and enterococc ... | 2016 | 27033208 |
| indomethacin injury to the rat small intestine is dependent upon biliary secretion and is associated with overgrowth of enterococci. | nsaiduse is limited due to the drugs' toxicity to the gastrointestinal mucosa, an action incompletely understood. lower gut injury induced bynsaids is dependent on bile secretion and is reported to increase the growth of a number of bacterial species, including an enterococcal species,enterococcus faecalis this study examined the relationships between indomethacin (indo)-induced intestinal injury/bleeding, small bowel overgrowth (sbo) and dissemination of enterococci, and the contribution of bil ... | 2016 | 27033447 |
| prebiotics and age, but not probiotics affect the transformation of 2-amino-3-methyl-3h-imidazo[4,5-f]quinoline (iq) by fecal microbiota - an in vitro study. | heterocyclic aromatic amines (haas) are carcinogens which are formed in meat cooked using high-temperature methods. the human gastrointestinal (gi) microbiota plays a crucial role in maintaining health in humans of different ages, and especially in the elderly. however, the gi microbiota, whose metabolism and composition changes with age, may also be responsible for the activation of mutagenic substances reaching the colon with diet. probiotics and prebiotics are promising in terms of reducing t ... | 2016 | 27034248 |
| maternal antibiotic treatment impacts development of the neonatal intestinal microbiome and antiviral immunity. | microbial colonization of the infant gastrointestinal tract (git) begins at birth, is shaped by the maternal microbiota, and is profoundly altered by antibiotic treatment. antibiotic treatment of mothers during pregnancy influences colonization of the git microbiota of their infants. the role of the git microbiota in regulating adaptive immune function against systemic viral infections during infancy remains undefined. we used a mouse model of perinatal antibiotic exposure to examine the effect ... | 2016 | 27036912 |
| bioactivities of ethanolic extract and its fractions of cistus laurifolius l. (cistaceae) and salvia wiedemannii boiss. (lamiaceae) species. | cistus laurifolius l. (cistaceae) and salvia wiedemannii boiss. (lamiaceae) have been used for treatment of some illnesses in turkish folk medicine. in the present study, the ethanolic extract and its fractions obtained using re-extraction by hexane (hx), chloroform (chcl3), butanol, and remaining-water (r-h2o) of c. laurifolius were screened for their in vitro bioactivities. | 2016 | 27041865 |
| detection of vancomycin resistance among enterococcus faecalis and staphylococcus aureus. | vancomycin remains the drug of choice for resistant gram positive infections caused by enterococcus spp and methicillin resistant staphylococcus aureus (mrsa). increased use of vancomycin has led to frank resistance and increase in mic (mic creep). vancomycin intermediate staphylococcus aureus (visa), vancomycin resistant staphylococcus aureus (vrsa) & vancomycin resistant enterococci (vre) are important emerging nosocomial pathogens resulting in treatment failures. | 2016 | 27042459 |
| effect of probiotics on the incidence of ventilator-associated pneumonia in critically ill patients: a randomized controlled multicenter trial. | to evaluate the potential preventive effect of probiotics on ventilator-associated pneumonia (vap). | 2016 | 27043237 |
| cesarean section changes neonatal gut colonization. | delivery by means of cesarean section has been associated with increased risk of childhood immune-mediated diseases, suggesting a role of early bacterial colonization patterns for immune maturation. | 2016 | 27045582 |
| diversity of culturable thermophilic actinobacteria in hot springs in tengchong, china and studies of their biosynthetic gene profiles. | the class actinobacteria has been a goldmine for the discovery of antibiotics and has attracted interest from both academics and industries. however, an absence of novel approaches during the last few decades has limited the discovery of new microbial natural products useful for industries. scientists are now focusing on the ecological aspects of diverse environments including unexplored or underexplored habitats and extreme environments in the search for new metabolites. this paper reports on t ... | 2016 | 27048448 |
| influence of working length and foraminal enlargement on foramen morphology and sealing ability. | the present study evaluated the influence of the working length and foraminal enlargement on the sealing ability and anatomy of the apical region of the root. | 2016 | 27054864 |
| light and temperature effects on bioactivity in diatoms. | isolates of five pelagic north atlantic marine diatoms (bacillariophyceae): attheya longicornis, chaetoceros socialis, chaetoceros furcellatus, skeletonema marinoi and porosira glacialis were cultivated in large photobioreactors at two light and two temperature regimes to test if this affected bioactivity. we screened for bioactivity in assays representing five different therapeutic areas: diabetes ii (ptp1b), cancer (melanoma cells, a2058), anti-oxidants (frap), immunomodulation (tnfa) and anti ... | 2017 | 27057087 |
| [persistence of a st6 clone of enterococcus faecalis genotype vanb2 in two hospitals in aragon (spain)]. | in order to study the evolution of the outbreak that occurred between 2009 and 2010 in 3 hospitals in zaragoza, all vancomycin-resistant clinical enterococcus faecalis isolates identified between 2011 and 2013 at these hospitals were characterised. | 2016 | 27059750 |
| [influence of the root canal instrumentation size on the disinfection of intracanal microbe by er:yag laser]. | to evaluate the influence of different root canal instrumentation size on disinfection of intracanal microbe of dental root canal. | 2015 | 27063113 |
| [the effect of a combined nanoparticulate/calcium hydroxide medication on the biofilm of enterococcus faecalis in starvation phase]. | to evaluate the efficacy of ca(oh)2 with a silver nanoparticle suspension to eliminate the biofilm of enterococcus faecalis (e. faecalis) in starvation phase. | 2016 | 27063301 |
| fungal naphtho-γ-pyrones: potent antibiotics for drug-resistant microbial pathogens. | four naphtho-γ-pyrones (fonsecinones a and c and aurasperones a and e) were identified as potential antibacterial agents against escherichia coli, extended-spectrum β-lactamase (esbl)-producing e. coli, pseudomonas aeruginosa, enterococcus faecalis, and methicillin-resistant staphylococcus aureus (mrsa) in an in vitro antibacterial screen of 218 fungal metabolites. fonsecinone a (2) exhibited the most potent antibacterial activity, with minimum inhibitory concentrations (mics) of 4.26, 17.04, an ... | 2016 | 27063778 |
| glutathione s-transferase alpha 4 induction by activator protein 1 in colorectal cancer. | glutathione s-transferase alpha 4 (gsta4) is a phase ii detoxifying enzyme that metabolizes electrophiles and carcinogens including 4-hydroxy-2-nonenal (4-hne), an endogenous carcinogen that contributes to colorectal carcinogenesis. in this study, we investigated gsta4 expression and regulation in murine primary colonic epithelial cells, microbiome-driven murine colitis and human carcinomas. exposure of yamc cells to 4-hne induced gsta4 expression. using an inflammation-associated model of color ... | 2016 | 27065323 |
| pretreatment with a heat-killed probiotic modulates monocyte chemoattractant protein-1 and reduces the pathogenicity of influenza and enterovirus 71 infections. | it has been proposed that inactivated probiotics may modulate the host immune system and contribute to mitigation of viral infections. this study demonstrated that administration of heat-killed enterococcus faecalis, a widely used probiotic, can protect host animals against viral infections. the influenza-mediated morbidity and lung inflammation in e. faecalis-treated mice decreased significantly compared with those of the control mice. furthermore, we found that the protection is associated wit ... | 2017 | 27072606 |
| comparison of clinical outcomes and risk factors in polymicrobial versus monomicrobial enterococcal bloodstream infections. | enterococcal bloodstream infections (ebsis) are frequently polymicrobial but scant data describe the outcomes and risk factors of polymicrobial ebsi. this study describes the outcomes and risk factors of polymicrobial versus monomicrobial ebsi. | 2016 | 27079241 |
| effect of the quorum-sensing luxs gene on biofilm formation by enterococcus faecalis. | enterococcus faecalis is the species of bacterium most frequently isolated from the root canals of teeth that exhibit chronic apical periodontitis refractory to endodontic treatment. in this study, we evaluated the effect of the s-ribosylhomocysteine lyase (luxs) quorum-sensing gene on e. faecalis biofilm formation by constructing a knockout mutant. the biofilms formed by both e. faecalis and its luxs mutant strain were evaluated using the mtt method. important parameters that influence biofilm ... | 2016 | 27080421 |
| effect of polymer/nanosilver composite packaging on long-term microbiological status of iranian saffron (crocus sativus l.). | crocus sativus l. (saffron) is a valuable plant which is native to iran. saffron is the dried stigmata of the flowering part of the plant that is usually contaminated with different bacteria and fungi through production process. antimicrobial properties of silver nanoparticles are well recognized. to survey the effects of nanosilver packaging on microbiological status of spiked, saffron samples over a six month period were chosen. saffron samples from five regions of khorasan province were purch ... | 2016 | 27081358 |
| pregnane receptor gene polymorphisms, pathogenic bacteria distribution and drug sensitivity, and tcm syndrome differentiation in patients with cholelithiasis. | to investigate the distribution of pathogens and drug resistance in bile and the association between the pregnane x receptor (pxr) gene polymorphisms, traditional chinese medicine (tcm) syndromes and the risk of cholesterol gallstone disease (cgd). | 2016 | 27086146 |
| complete genome sequence of enterococcus faecalis ld33, a bacteriocin-producing strain. | enterococcus faecalis ld33 strain was originally isolated from traditional naturally fermented cream in inner mongolia of china. its complete genome sequence was carried out using the illumina hiseq and the pacbio rsii platform. the genome only has a circular chromosome and a gc content of 37.58%. other core information shown in the genome sequencing results further insight on this bacterium's genetic elements for bacteriocin production and the genes related to respiratory chain. | 2016 | 27090021 |
| nondermal irritating hyperosmotic nanoemulsions reduce treatment times in a contamination model of wound healing. | increased microbial burden within the wound often complicates wound healing and may lead to subsequent infection or delayed healing. here, we investigate a novel topical for addressing wound contamination that utilizes hyperosmotic saccharides with a cell membrane disrupting emulsion. these hyperosmotic nanoemulsions (hne) were administered topically in a full-thickness biopsy model of wound healing. results show that hne were well tolerated in noninfected animals with no indications of dermal i ... | 2016 | 27090977 |
| q69 (an e. faecalis-infecting bacteriophage) as a biocontrol agent for reducing tyramine in dairy products. | biogenic amines (bas) are low molecular weight nitrogenous compounds with biological activity, formed from amino acids by decarboxylation. bas are naturally present in all living organisms playing essential roles. however, their accumulation in food through the metabolic activity of certain microorganisms constitutes a toxicological hazard. among foods, cheeses accumulate some of the highest concentrations of bas since they provide an ideal environment for their accumulation. most of the methods ... | 2016 | 27092117 |
| antimicrobial activity of tetraacetylethylenediamine-sodium perborate versus sodium hypochlorite against enterococcus faecalis. | background. this study evaluated the antimicrobial activity of tetraacetylethylenediamine-sodium perborate (taed-sp) in comparison to 2.5% and 5% sodium hypochlorite (naocl) against enterococcus faecalis. methods. a standard suspension of e. faecalis was inoculated on 60 plates containing mueller-hinton agar culture medium. four sterile disks of beckman filtration paper were placed on each plate. taed-sp, 5% and 2.5% naocl were placed on three disks. sterile physiologic saline was placed on the ... | 2016 | 27092214 |
| first japanese case of infectious endocarditis due to enterococcus faecalis small-colony variants. | a male patient was admitted to our hospital due to infectious endocarditis. he had been treated with levofloxacin for 6 weeks, sulbactam/cefoperazone for 4 weeks, and benzylpenicillin for 2 days prior to valve replacement surgery. gram-positive cocci, with morphology consistent with γ-streptococcus, were detected in blood cultures obtained at admission, as well as in vegetation obtained from the aortic valve. however, the strain could not be identified using biochemical methods. sequencing of th ... | 2016 | 27094238 |
| enterococcus faecalis biofilm. formation and development in vitro observed by scanning electron microscopy. | biofilm produced by enterococcus faecalis isolated from root canals was detected by growing it on microplates and using 10% crystal violet stain, elution with alcohol and three procedures: no fixation, heat fixation and 10% formaldehyde fixation. the biofilm was evaluated using a versamax microplate reader (usa). twenty sterile root portions were incubated in ts broth with e. faecalis (108) for 48 hours, 4, 7, 14 and 30 days, after which they were processed and observed by scanning electron micr ... | 2015 | 27095620 |
| antimicrobial effect of three disinfecting agents on resilon cones and their effect on surface topography: an in vitro study. | the objective of this study was to evaluate the effectiveness of 5.25% sodium hypochlorite (naocl), 2% chlorhexidine (chx), and 2% peracetic acid (paa) in disinfecting resilon cones and to evaluate topographical changes microscopically under scanning electron microscope (sem) after rapid chemical disinfection. | 2017 | 27099418 |
| molecular characterization and analysis of antimicrobial activity of endophytic fungi from medicinal plants in saudi arabia. | endophytic fungi, which have been reported in numerous plant species, are important components of the forest community and contribute significantly to the diversity of natural ecosystems. | 2016 | 27099679 |
| lactobacillus helveticus lafti l10 supplementation modulates mucosal and humoral immunity in elite athletes: a randomized, double-blind, placebo-controlled trial. | michalickova, dm, kostic-vucicevic, mm, vukasinovic-vesic, md, stojmenovic, tb, dikic, nv, andjelkovic, ms, djordjevic, bi, tanaskovic, bp, and minic, rd. lactobacillus helveticus lafti l10 supplementation modulates mucosal and humoral immunity in elite athletes: a randomized, double-blind, placebo-controlled trial. j strength cond res 31(1): 62-70, 2017-to test the influence of probiotic supplementation on humoral immune response, a double-blind, placebo-controlled trial was conducted. thirty a ... | 2017 | 27100317 |
| virb8-like protein trah is crucial for dna transfer in enterococcus faecalis. | untreatable bacterial infections caused by a perpetual increase of antibiotic resistant strains represent a serious threat to human healthcare in the 21(st) century. conjugative dna transfer is the most important mechanism for antibiotic resistance and virulence gene dissemination among bacteria and is mediated by a protein complex, known as type iv secretion system (t4ss). the core of the t4ss is a multiprotein complex that spans the bacterial envelope as a channel for macromolecular secretion. ... | 2016 | 27103580 |
| in vitro inactivation of enterococcus faecalis with a led device. | non-coherent light-emitting diodes (leds) are effective in a large variety of clinical indications; however, the bactericidal activity of leds is unclear, although the effectiveness of such lights is well known. currently, no studies have examined the effects of nir-led on bacteria. the aims of this study were to verify the antibacterial activity of 880-nm led irradiation on a bacterial suspension of enterococcus faecalis and to compare it with the actions of sodium hypochlorite (naocl) and the ... | 2016 | 27107704 |
| acute severe aortic regurgitation: imaging with pathological correlation. | acute aortic regurgitation (ar) is an important finding associated with a wide variety of disease processes. its timely diagnosis is of utmost importance. delay in diagnosis could prove fatal. | 2016 | 27114975 |
| boron-doped diamond oxidation of amoxicillin pharmaceutical formulation: statistical evaluation of operating parameters, reaction pathways and antibacterial activity. | the electrochemical oxidation of a commercial amoxicillin formulation over a boron-doped diamond (bdd) anode was investigated. the effect of initial cod concentration (1-2 g/l), current density (30-50 ma/cm(2)), treatment time (15-90 min), initial ph (3-9) and electrolyte concentration (2-4 g/l nacl) on cod removal was assessed through a factorial design methodology. for the range of conditions in question, the first three single effects, as well as the interaction between cod and time were the ... | 2016 | 27117507 |
| potent antimicrobial and antibiofilm activities of bacteriogenically synthesized gold-silver nanoparticles against pathogenic bacteria and their physiochemical characterizations. | the objective of this study was to develop a bimetallic nanoparticle with enhanced antibacterial activity that would improve the therapeutic efficacy against bacterial biofilms. bimetallic gold-silver nanoparticles were bacteriogenically synthesized using γ-proteobacterium, shewanella oneidensis mr-1. the antibacterial activities of gold-silver nanoparticles were assessed on the planktonic and biofilm phases of individual and mixed multi-cultures of pathogenic gram negative (escherichia coli and ... | 2016 | 27117745 |
| antimicrobial activity and substantivity of uncaria tomentosa in infected root canal dentin. | the aim of this study was to analyze the antimicrobial activity and substantivity of uncaria tomentosa willd dc (cat's claw, cc) in root dentin contaminated with enterococcus faecalis. forty-eight human premolars were contaminated with e. faecalis (atcc 29212) and randomly divided into four groups according to the irrigant used during chemomechanical preparation (cmp): cc group: 2% cc gel; chx group: 2% chlorhexidine digluconate gel (chx); naocl group: 5.25% sodium hypochlorite (naocl); and ss g ... | 2016 | 27119588 |
| solubility and bacterial sealing ability of mta and root-end filling materials. | objective to evaluate solubility and sealing ability of mineral trioxide aggregate (mta) and root-end filling materials. material and methods the materials evaluated were: mta, calcium silicate cement with zirconium oxide (csc/zro2), and zinc oxide/eugenol (zoe). solubility test was performed according to ansi/ada. the difference between initial and final mass of the materials was analyzed after immersion in distilled water for 7 and 30 days. retrograde cavities in human teeth with single straig ... | 2016 | 27119759 |
| sealing ability of mta, cpm, and mbpc as root-end filling materials: a bacterial leakage study. | objectives to evaluate the sealing ability of three root-end filling materials (white mta, cpm, and mbpc) using an enterococcus faecalis leakage model. material and methods seventy single-root extracted human teeth were instrumented and root-ends were resected to prepare 3 mm depth cavities. root-end preparations were filled with white mta, cpm, and mbpc cements. enterococcus faecalis was coronally introduced and the apical portion was immersed in bhi culture medium with phenol red indicator. th ... | 2016 | 27119763 |
| solar inactivation of enterococci and escherichia coli in natural waters: effects of water absorbance and depth. | the decay of sewage-sourced escherichia coli and enterococci was measured at multiple depths in a freshwater marsh, a brackish water lagoon, and a marine site, all located in california. the marine site had very clear water, while the waters from the marsh and lagoon contained colored dissolved organic matter that not only blocked light but also produced reactive oxygen species. first order decay rate constants of both enterococci and e. coli were between 1 and 2 d(-1) under low light conditions ... | 2016 | 27119980 |
| photoinactivation of eight health-relevant bacterial species: determining the importance of the exogenous indirect mechanism. | it is presently unknown to what extent the endogenous direct, endogenous indirect, and exogenous indirect mechanisms contribute to bacterial photoinactivation in natural surface waters. in this study, we investigated the importance of the exogenous indirect mechanism by conducting photoinactivation experiments with eight health-relevant bacterial species (bacteroides thetaiotaomicron, campylobacter jejuni, enterococcus faecalis, escherichia coli k12, e. coli o157:h7, salmonella enterica serovar ... | 2016 | 27121126 |
| light-activated polymethylmethacrylate nanofibers with antibacterial activity. | the creation of an antibacterial material with triggerable properties enables us to avoid the overuse or misuse of antibacterial substances and, thus, prevent the emergence of resistant bacterial strains. as a potential light-activated antibacterial material, polymethylmethacrylate (pmma) nanofibers doped with silver nanoparticles (agnps) and meso-tetraphenylporphyrin (tpp) were prepared by electrospinning. tpp was chosen as an effectively reactive oxygen species (ros) producer. antibacterial te ... | 2016 | 27127048 |
| the efficacy of umbelliferone, arbutin, and n-acetylcysteine to prevent microbial colonization and biofilm development on urinary catheter surface: results from a preliminary study. | we evaluated, in a preliminary study, the efficacy of umbelliferone, arbutin, and n-acetylcysteine to inhibit biofilm formation on urinary catheter. we used 20 urinary catheters: 5 catheters were incubated with enterococcus faecalis (control group); 5 catheters were incubated with e. faecalis in presence of umbelliferone (150 mg), arbutin (60 mg), and n-acetylcysteine (150 mg) (group 1); 5 catheters were incubated with e. faecalis in presence of umbelliferone (150 mg), arbutin (60 mg), and n-ace ... | 2016 | 27127655 |
| effect of dietary starch source and concentration on equine fecal microbiota. | starch from corn is less susceptible to equine small intestinal digestion than starch from oats, and starch that reaches the hindgut can be utilized by the microbiota. the objective of the current study was to examine the effects of starch source on equine fecal microbiota. thirty horses were assigned to treatments: control (hay only), hc (high corn), ho (high oats), lc (low corn), lo (low oats), and lw (low pelleted wheat middlings). horses received an all-forage diet (2 wk; d -14 to d -1) befo ... | 2016 | 27128793 |
| efficacy of calcium oxide and calcium hydroxide nanoparticles on the elimination of enterococcus faecalis in human root dentin. | the objective of this study was to compare the antibacterial effect of calcium oxide nanoparticles (conps) and calcium hydroxide nanoparticles (chnps) against enterococcus faecalis in a dentinal block model. | 2017 | 27129586 |
| efficacy of 4 irrigation protocols in killing bacteria colonized in dentinal tubules examined by a novel confocal laser scanning microscope analysis. | the aim of this study was to determine the efficiency of 4 irrigation systems in eliminating bacteria in root canals, particularly in dentinal tubules. | 2016 | 27130334 |
| influence of a polymerizable eugenol derivative on the antibacterial activity and wettability of a resin composite for intracanal post cementation and core build-up restoration. | eugenol has been used in dentistry due to its ability to inhibit the growth of a range of microorganisms, including facultative anaerobes commonly isolated from infected root canals. the aim of this study was to evaluate the antibacterial activity of the experimental composites containing eugenyl methacrylate monomer (egma), a polymeric derivative of eugenol, against a range of oral bacteria, commonly associated with failure of coronal and endodontic restorations. in vitro composite behavior and ... | 2016 | 27130610 |
| a novel in vitro co-culture model comprised of caco-2/rbl-2h3 cells to evaluate anti-allergic effects of food factors through the intestine. | the prevalence of type i allergic diseases such as food allergy and allergic rhinitis has increased. therefore, many studies have focused on food factors with anti-allergic activities in recent years. in order to investigate the effect of food factors on mast cell activation, a rbl-2h3 cell monoculture system has been widely used, in which various food factors have been reported to inhibit degranulation of rbl-2h3 cells. however, some orally administered food factors do not interact directly wit ... | 2016 | 27131754 |
| comparison of the antimicrobial efficacy of two antibiotics sparfloxacin and augmentin as experimental root canal irrigating solutions against enterococcus faecalis - an invitro study. | one of the main goals of endodontic treatment is root canal disinfection and to prevent subsequent chances of reinfection. adjuvant to instrumentation, root canal irrigants are required to eliminate the bacteria found on the root canal walls and lateral canals within the dentinal tubules. | 2016 | 27135003 |
| a silenced vana gene cluster on a transferable plasmid caused an outbreak of vancomycin-variable enterococci. | we report an outbreak of vancomycin-variable vana(+) enterococci (vve) able to escape phenotypic detection by current guidelines and demonstrate the molecular mechanisms for in vivo switching into vancomycin resistance and horizontal spread of the vana cluster. forty-eight vana(+) enterococcus faecium isolates and one enterococcus faecalis isolate were analyzed for clonality with pulsed-field gel electrophoresis (pfge), and their vana gene cluster compositions were assessed by pcr and whole-geno ... | 2016 | 27139479 |
| effect of different mixing methods on the bacterial microleakage of calcium-enriched mixture cement. | calcium-enriched mixture cement is used in the field of endodontics. it is similar to mineral trioxide aggregate in its main ingredients.the present study investigated the effect of different mixing methods on the bacterial microleakage of cem cement. | 2016 | 27139578 |
| antimicrobial activity of synthesized 2-methylthiobenzo[g][1,2,4]- triazolo[1,5-a]quinazoline derivatives. | the present study was carried out to evaluate the antimicrobial activity of a synthesized 2-methylthio-benzo[g][1,2,4]triazolo[1,5- a]quinazoline series. the compounds (1-21) were tested against a variety of gram-positive bacterial species including bacillus subtilis (rcmb 01001 69-3), enterococcus faecalis (rcmb 0100154-2), staphylococcus aureus (rcmb 0100183-9), staphylococcus epidermidis (rcmb 0100183-9) and streptococcus pyogenes (rcmb 0100172-5). in addition, gram-negative bacteria were als ... | 2016 | 27140181 |
| simulated-use validation of a sponge atp method for determining the adequacy of manual cleaning of endoscope channels. | the objective of this study was to validate the relative light unit (rlu) cut-off of adequate cleaning of flexible colonoscopes for an atp (adenosine tri-phosphate) test kit that used a sponge channel collection method. | 2016 | 27142441 |
| virulence genes among enterococcus faecalis and enterococcus faecium isolated from coastal beaches and human and nonhuman sources in southern california and puerto rico. | most enterococcus faecalis and e. faecium are harmless to humans; however, strains harboring virulence genes, including esp, gele, cyla, asa1, and hyl, have been associated with human infections. e. faecalis and e. faecium are present in beach waters worldwide, yet little is known about their virulence potential. here, multiplex pcr was used to compare the distribution of virulence genes among e. faecalis and e. faecium isolated from beaches in southern california and puerto rico to isolates fro ... | 2016 | 27144029 |
| protein translation machinery holds a key for transition of planktonic cells to biofilm state in enterococcus faecalis: a proteomic approach. | enterococcus faecalis is a member of human gut microflora causing nosocomial infection involving biofilm formation. ethyl methyl sulfonate induced mutants were analysed using crystal violet assay, sem and clsm microscopy which confirmed ak-e12 as biofilm efficient and ak-f6 as biofilm deficient mutants. growth curve pattern revealed ak-e12 was fast growing whereas, ak-f6 was found slow growing mutant. 2d-electrophorosis and maldi-tof analysis revealed over and underexpression of many translation ... | 2016 | 27144316 |
| evaluation of antimicrobial efficacy of cetrimide and glycyrrhiza glabra l. extract against enterococcus faecalis biofilm grown on dentin discs in comparison with naocl. | this study aimed to determine the antimicrobial efficacy of naocl, cetrimide, and glycyrrhiza glabra l. extract against enterococcus faecalis biofilms on dentine discs. broth microdilution method was used to determine minimal bactericidal concentrations (mbcs) of the agents. a biofilm susceptibility assay was performed using e. faecalis biofilms grown on dentine discs. minimal bactericidal concentrations (mbcs) of naocl (0.5%), cetrimide (0.015%), and g. glabra l. extract (0.25%) were applied fo ... | 2016 | 27150551 |
| reactive arthritis caused by urinary tract infection. | we report the case of a 58-year-old man presenting with chest pain who underwent percutaneous coronary intervention (pci). the patient subsequently developed a fever over 38°c, pain on micturition, and cloudy urine 3 days following pci. urine cultures were positive for escherichia coli and enterococcus faecalis, whereas blood cultures were negative. arthritis occurred two weeks following urinary tract infection (uti). we herein present a rare case of reactive arthritis caused by uti following pc ... | 2016 | 27150879 |
| probiotic properties of lactic acid bacteria isolated from human milk. | the objective of this study was to identify and characterize lactic acid bacteria isolated from human milk, with an emphasis on their probiotic properties. | 2016 | 27159339 |
| detection of vancomycin resistance in enterococcus species isolated from clinical samples and feces of colonized patients by phenotypic and genotypic methods. | the aim of this study was to find out the clinical correlation between the presence of vancomycin-resistant genes (van a and van b) and their expression as detected by phenotypic tests in colonized patients and in clinical isolates. | 2017 | 27166038 |
| macrolide, glycopeptide resistance and virulence genes in enterococcus species isolates from dairy cattle. | the genus enterococcus is known to possess the capacity to acquire and disseminate antimicrobial resistant determinants alongside the ability to produce various virulence genes that enables it to establish infections. we assessed the prevalence and antibiogram profiles of enterococcus spp. in faecal samples of dairy cattle. faecal swab samples were collected from 400 dairy cattle from two commercial cattle farms in two rural communities in the eastern cape, south africa. confirmation of enteroco ... | 2016 | 27166215 |
| studies on bioactivity and secondary metabolites of crude extracts of bidens pilosa l. (asteraceae): a medicinal plant used in the transkei region of south africa. | whole plant-parts of bidens pilosa were powdered and extracted in concentrated hexane, acetone, ethanol, methanol and water. the extracts were tested for antimicrobial activity against escherichia coli (25922), bacillus subtilis (atcc 6051), enterococcus faecalis (51299) staphylococcus aureus (atcc 29213) and pseudomonas aeruginosa (atcc127853), using standard microbiological techniques. active crude extracts were macerated in concentrated methanol and tested for secondary metabolites including ... | 2016 | 27166532 |
| characterization of enterococcus faecalis isolates originating from different sources for their virulence factors and genes, antibiotic resistance patterns, genotypes and biofilm production. | in this study, 72 enterococcus faecalis isolates originating from humans (n=39), dogs (n=26) and cats (n=7) were investigated for some virulence factors, some virulence genes, antibiotic resistance phenotypes, randomly amplified polymorphic dna-polymerase chain reaction (rapd-pcr) patterns and biofilm production. of the isolates, 31 (43.1%) were positive for gelatinase, 11 (15.3%) for aggregation substance and cytolysine, 38 (52.8%) for gele and 34 (47.2%) for asa1 genes. all isolates were found ... | 2015 | 27175186 |
| antibacterial activity of miswak salvadora persica extracts against isolated and genetically identified oral cavity pathogens. | despite medical progress worldwide, dental caries are still widespread. miswak is derived from the plant arak (salvadora persica). it is used by muslim peoples as a natural product for the cleansing of teeth, to ensure oral and dental hygiene. | 2016 | 27177110 |
| evaluation of the propidium monoazide-quantitative polymerase chain reaction method for the detection of viable enterococcus faecalis. | one limitation of dna-based molecular assays is their inability to distinguish between live and dead cells. a sample treatment with propidium monoazide (pma) before dna amplification has been proposed to overcome this problem. the aim of this in vitro study was to test different concentrations of pma coupled with quantitative polymerase chain reaction (qpcr) for the detection of viable enterococcus faecalis. | 2016 | 27179593 |
| proteolytic activity of enterococcus faecalis vb63f for reduction of allergenicity of bovine milk proteins. | with the aim of screening proteolytic strains of lactic acid bacteria to evaluate their potential for the reduction of allergenicity of the major bovine milk proteins, we isolated a new proteolytic strain of enterococcus faecalis (ent. faecalis vb63f) from raw bovine milk. the proteases produced by this strain had strong activity against caseins (αs1-, αs2-, and β-casein), in both skim milk and sodium caseinate. however, only partial hydrolysis of whey proteins was observed. proteolysis of na-ca ... | 2016 | 27179865 |
| increased gut redox and depletion of anaerobic and methanogenic prokaryotes in severe acute malnutrition. | severe acute malnutrition (sam) is associated with inadequate diet, low levels of plasma antioxidants and gut microbiota alterations. the link between gut redox and microbial alterations, however, remains unexplored. by sequencing the gut microbiomes of 79 children of varying nutritional status from three centers in senegal and niger, we found a dramatic depletion of obligate anaerobes in malnutrition. this was confirmed in an individual patient data meta-analysis including 107 cases and 77 cont ... | 2016 | 27183876 |
| post-renal transplant infections: single-center experience from nigeria. | infections are the leading cause of hospitalization and mortality in transplant recipients. nigeria has a growing number of renal transplant recipients. the aim of this study was to determine the pattern of infections in renal allograft recipients in one of the major renal transplant centers in nigeria. | 2016 | 27188439 |
| antibacterial activity of the novel semisynthetic lantibiotic nvb333 in vitro and in experimental infection models. | nvb333 is a novel semisynthetic lantibiotic derived from the amide coupling of 3,5-dichlorobenzylamine to the c-terminal of deoxyactagardine b. the in vitro activity of nvb333 includes efficacy against clinically relevant pathogens including methicillin-resistant staphylococcus aureus and vancomycin-resistant enterococcus spp. nvb333 shows no cross-resistance with other antibiotics tested and a very low propensity for resistance development. after intravenous dosing nvb333 has high exposure in m ... | 2016 | 27189121 |
| effects of enterococcus faecalis cect 7121 on cryptosporidium parvum infection in mice. | cryptosporidium is an opportunistic protozoan parasite of humans and animals worldwide and causes diarrheal disease that is typically self-limiting in immunocompetent hosts but often life threatening to immunocompromised individuals. however, there is a lack of completely efficient therapy available. probiotics have attracted the attention as potential antiparasite compounds against protozoa involved in intestinal infections. this study investigated the effects of administration of probiotic ent ... | 2016 | 27193238 |
| influence of gelatin-thrombin matrix tissue sealant on bacterial colony formation and risk of pelvic infection. | objective. gelatin-thrombin matrix (gtm) tissue sealant use was previously identified as an independent predictor of pelvic infection following hysterectomies. we aim to elucidate contributing factors by assessing influence of gtm on bacterial colony formation and characterizing bacteria present at the vaginal cuff. methods. escherichia coli was incubated in phosphate-buffered saline (pbs) and pelvic washings with and without gtm to assess influence on colony formation. pelvic washings of the va ... | 2016 | 27199534 |
| antimicrobial and cytotoxic activity of cinnamomum zeylanicum, calcium hydroxide, and triple antibiotic paste as root canal dressing materials. | the aim of this article was (i) to define the chemical constituents of cinnamomum zeylanicum essential oil (ceo), (ii) to compare the antimicrobial activity of ceo with triple antibiotic paste (tap) and calcium hydroxide [ca(oh)2] on planktonic and biofilm enterococcus faecalis; and (iii) to compare the cytotoxicity of these medicaments on l929 fibroblasts. | 2016 | 27206997 |
| action of chlorhexidine, zingiber officinale, and calcium hydroxide on candida albicans, enterococcus faecalis, escherichia coli, and endotoxin in the root canals. | the purpose of this in vitro study was to evaluate the antimicrobial activity of 2% chlorhexidine gel (chx) as auxiliary chemical substance and intracanal medications on candida albicans, enterococcus faecalis, escherichia coli, and their endotoxins in the root canals. | 2016 | 27206998 |
| rare case of simultaneous enterococcal endocarditis and prosthetic joint infection. | a 59-year-old man was admitted with a 3-month history of daily fevers as well as bilateral knee pain and swelling. medical history was significant for bilateral knee arthroplasties 4 years prior to admission. two sets of peripheral blood cultures as well as bilateral knee synovial fluid grew enterococcus faecalis within 10 hours. transoesophageal echocardiography revealed aortic and mitral valve vegetations suggestive of infectious endocarditis, with severe regurgitation secondary to large size. ... | 2016 | 27207984 |
| exogenous fatty acids protect enterococcus faecalis from daptomycin-induced membrane stress independently of the response regulator liar. | enterococcus faecalis is a commensal bacterium of the gastrointestinal tract that can cause nosocomial infections in immunocompromised humans. the hallmarks of this organism are its ability to survive in a variety of stressful habitats and, in particular, its ability to withstand membrane damage. one strategy used by e. faecalis to protect itself from membrane-damaging agents, including the antibiotic daptomycin, involves incorporation of exogenous fatty acids from bile or serum into the cell me ... | 2016 | 27208105 |
| antagonistic donor density effect conserved in multiple enterococcal conjugative plasmids. | enterococcus faecalis, a common causative agent of hospital-acquired infections, is resistant to many known antibiotics. its ability to acquire and transfer resistance genes and virulence determinants through conjugative plasmids poses a serious concern for public health. in some cases, induction of transfer of e. faecalis plasmids results from peptide pheromones produced by plasmid-free recipient cells, which are sensed by the plasmid-bearing donor cells. these plasmids generally encode an inhi ... | 2016 | 27208137 |
| bactericidal effect of strong acid electrolyzed water against flow enterococcus faecalis biofilms. | this study evaluated the bactericidal effect of strong acid electrolyzed water (saew) against flow enterococcus faecalis biofilm and its potential application as a root canal irrigant. | 2016 | 27208991 |
| genome-based characterization of hospital-adapted enterococcus faecalis lineages. | vancomycin-resistant enterococcus faecalis (vrefs) is an important nosocomial pathogen1,2. we undertook whole genome sequencing of e. faecalis associated with bloodstream infection in the uk and ireland over more than a decade to determine the population structure and genetic associations with hospital adaptation. three lineages predominated in the population, two of which (l1 and l2) were nationally distributed, and one (l3) geographically restricted. genome comparison with a global collection ... | 2016 | 27213049 |