evaluating the in-vitro antibacterial effect of iranian propolis on oral microorganisms.propolis has traditionally been used in curing infections and healing wounds and burns. current researches have shown that propolis has antibacterial, antifungal and antiviral actions however, the pharmacological activity of propolis is highly variable depending on its geographic origin. there have been few studies on the effects of iranian propolis on the oral microorganisms. in this in-vitro study, the antimicrobial activity of the ethanolic and water extracts of the iranian propolis (10%, w/v ...201124250366
bacteriocin-related siblicide in clinical isolates of enterococci.siblicide is a phenomenon defined in the present context as an enterococcus strain that, while growing as a colony on solid media, exhibits an inhibitory effect on a lawn composed of the identical strain. it was shown to occur in seven clinical isolates of enterococci (one e. faecalis and six e. faecium). four involve inhibitory anti-listerial activities consistent with class ii bacteriocins, two of which appear to be up-regulated by extracellular autoinducers.201126781499
physiological and structural differences between enterococcus faecalis jh2-2 and mutant strains resistant to (p)-divercin rv41.the aim of this study was to show the differences that could exist at the physiological and structural levels between enterococcus faecalis jh2-2 (wild type) and three mutant strains resistant to divercin rv41. these mutant strains were recently isolated and characterized for their intermediate resistance to recombinant dvnrv41; a subclass iia bacteriocin produced by escherichia coli. these mutant strains were named 35a1 (altered in gene coding phosphoesterase activity), 35h1 (altered in gene co ...201026781317
inactivation of staphylococcus aureus and enterococcus faecalis by a direct-current, cold atmospheric-pressure air plasma microjet.a direct-current, cold atmospheric-pressure air plasma microjet (pmj) was performed to inactivate staphylococcus aureus (s. aureus) and enterococcus faecalis (e. faecalis) in air. the process of sterilization and morphology of bacteria was observed. we wish to know the possible inactivation mechanisms of pmj and explore a potential application in dental and other temperature sensitive treatment.201023554639
in vitro scanning electron microscopic study on the effect of doxycycline and vancomycin on enterococcal induced biofilm.enterococcus (e) faecalis bacteria adhere to dentine of teeth root canals to form the biofilm. e. faecalis has been shown to be resistant to antibiotics. this in vitro study aimed to investigate the efficacy of vancomycin and doxycycline in inhibiting e. faecalis biofilm formation.201023130027
abdominal cerebrospinal fluid pseudocyst due to infection with enterococcus faecalis. a case report.abdominal cerebrospinal fluid pseudocyst is a rare complication of ventriculo-peritoneal shunt occurring as a result of non-absorption of cerebrospinal fluid from the abdominal cavity due to inflammation. usual presentations include abdominal symptoms; abdominal distention, pain, nausea, vomiting and symptoms of raised intracranial pressure like headache due to shunt dysfunction. the diagnosis may be delayed in severely handicapped patients due to poor communicability, multiple associated compli ...201024148340
comparative evaluation of antimicrobial efficacy of mtad, 3% naoci and propolis against e faecalis.the present study sought to compare the antimicrobial efficacy of 3% naocl, biopure mtad (tulsa dentsply, tulsa, ok) and brazilian ethanolic extract of propolis (eep) against enterococcus faecalis (e. faecalis).201727625552
first report of vancomycin-resistant enterococcus faecalis in uberaba, minas gerais this study we report the first isolation of vana-type vancomycin-resistant enterococcus faecalis strains from two different patients hospitalized in the same intensive care unit at the hospital of universidade federal do triângulo mineiro (uftm), uberaba, minas gerais, brazil.201024031460
comparison of bacterial and dye microleakage of different root-end filling materials.the provision of an effective apical seal is an essential factor when choosing an appropriate material for success of root-end surgeries. root-end resection, preparation and obturation should provide an adequate apical seal. the aim of this in vitro study was to investigate bacterial and dye microleakage of four different root-end filling materials and compare the efficacy of these two methods.201023130024
unusual extracardiac manifestations of isolated native tricuspid valve endocarditis.isolated native tricuspid valve endocarditis (tve) in non-intravenous drug users is a very rare condition. we describe an unusual presentation of enterococcus faecalis tve associated with spondylodiscitis, positive cytoplasmic antineutrophil cytoplasmic antibodies and antiproteinase-3 antibodies vasculitic rash in an otherwise healthy patient with no history of intravenous drug use or underlying cardiac abnormalities. a high index of clinical suspicion is required in patients presenting with unu ...201022798103
influence of bovine serum albumin on the antibacterial activity of endodontic irrigants against enterococcus has been demonstrated that organic content of the root canals can influence the antimicrobial capability of chemical irrigants. the aim of this study was to evaluate the effect of bovine serum albumin (bsa), as an organic material, on the antimicrobial activity of several intracanal irrigants.200924019835
antibacterial activity of methanol extract of ruta chalapensis (l), quercus infectoria (oliver) and canthium parviflorum (lam).the present study aimed at evaluating the antibacterial activity of methanol extract of ruta chalapensis, l., (rutaceae), quercus infectoria oliver., (fagaceae) and canthium parviflorum lam., (rubiaceae) against staphylococcus aureus, pseudomonas aeruginosa, enterococcus faecalis, klebsiella oxytocoa, klebsiella pneumoniae and proteus mirabilis. the experiment was carried out using disc diffusion method. the results revealed that the methanol extract of aerial parts of ruta chalepensis (l) prese ...200922557348
macular infarction after enterococcus faecalis describe a case of macular infarction occurring after enterococcus faecalis endophthalmitis in a patient who had undergone cataract surgery.200925389576
the effect of carvacrol on enterococcus faecalis as a final irrigant.sodium hypochlorite (naocl) is an effective antimicrobial irrigant, however its toxic effects and deterrent odor are not ideal. carvacrol is an edible plant extract with anti-inflammatory and anti-bacterial properties that is effective against enterococcus (e) faecalis. the aim of this study was to evaluate carvacrol's antibacterial efficacy against e. faecalis bacteria as a final irrigant.200924003329
influence of the length of remaining root canal filling and post space preparation on the coronal leakage of enterococcus faecalis.this study evaluated the sealing ability of different lengths of remaining root canal filling and post space preparation against coronal leakage of enterococcus faecalis. forty-one roots of maxillary incisors were biomechanically prepared, maintaining standardized canal diameter at the middle and coronal thirds. the roots were autoclaved and all subsequent steps were undertaken in a laminar flow chamber. the canals of 33 roots were obturated with ah plus sealer and gutta-percha. the root canal f ...200924031339
antimicrobial resistance profile of enterococcus spp isolated from food in southern brazil.fifty-six enterococcus spp. strains were isolated from foods in southern brazil, confirmed by pcr and classified as enterococcus faecalis (27), enterococcus faecium (23) and enterococcus spp (6). antimicrobial susceptibility tests showed resistance phenotypes to a range of antibiotics widely administrated in humans such as gentamycin, streptomycin, ampicillin and vancomycin.200924031330
microbial flora of root canals of pulpally-infected teeth: enterococcus faecalis a prevalent species.the aim of this study was to determine the microorganisms prevalent in the necrotic dental pulp and root canals of unsuccessfully treated teeth.200923230477
antimicrobial effects of ah26 sealer/antibiotic combinations against enterococcus faecalis.the purpose of this in vitro study was to evaluate the antimicrobial effects of two antibiotics added to ah26 sealer against enterococcus faecalis (ef).200824082901
in vitro comparison of the effectiveness of chlorhexidine and two calcium hydroxide formulations on enterococcus faecalis.the aim of this in vitro study was to compare the effectiveness of three intracanal medicaments in disinfecting the root canal and dentin of experimentally infected human teeth with enterococcus faecalis (ef).200824146671
antimicrobial activity of three root canal irrigants on enterococcus faecalis: an in vitro study.the aim of this study was to compare the antimicrobial effects of 2.5% sodium hypochlorite (naocl), 2% chlorhexidine gluconate (chx) and biopure mtad (mtad) on enterococcus (e) faecalis-contaminated root canals of human extracted teeth.200824171016
virulence factors in vancomycin-resistant and vancomycin- susceptible enterococcus faecalis from brazil.enterococci are members of commensal flora of animals and insects, but are also important opportunistic pathogens. our objective was to observe if there was any difference of virulence in several groups of e. faecalis, mainly between vancomycin-resistant e. faecalis (vrefs) of colonization and infection. vrefs and vancomycin-sensitive e. faecalis from brazil were screened for the presence of virulence factor genes. phenotypic assays were used to assess in vitro expression, to understand the path ...200824031215
quantifying the extruded bacteria following use of two rotary instrumentation systems.all instrumentation techniques have been reported to be associated with extrusion of infected debris. the aim of this study was to evaluate the number of bacteria extruded apically from extracted teeth ex vivo after canal instrumentation using the two engine-driven techniques utilizing nickel-titanium instruments (flex master and mtwo).200724298285
necrotizing fascitis: an epidemiologic study of 102 cases.necrotizing fascitis is a progressive, rapidly spreading, inflammatory infection located in deep fascia. it may cause necrosis of skin and subcutaneous tissues. spreading of it may lead to shock, organ failure and even death.200723132965
an evaluation of the sealing ability of mta and resilon: a bacterial leakage study.the purpose of this study was to evaluate the sealing ability of gray-colored mineral trioxide aggregate (gmta), white-colored mta (wmta), and resilon as root filling materials.200724327814
a review of the current place of glycopeptides in turkish medical practice.glycopeptide antibiotics are considered by many investigators to be the last resort in the treatment of gram-positive bacterial infections.200724678118
an evaluation of mta cements as coronal barrier.coronal leakage seems to play an important role in the failure of endodontic treatment. a double seal over root canal filling has been suggested as a means of improving the coronal seal. several restorative materials have been used in an attempt to produce a coronal barrier. the purpose of this study was to assess gray-coloured mineral trioxide aggregate (gmta), white-coloured mineral trioxide aggregate mta (wmta), and principle (a resin-modified glass ionomer) as coronal barriers to bacterial l ...200624454453
the safety of percutaneous endoscopic gastrostomy tube placement in patients with existing ventriculoperitoneal shunts.because the insertion of percutaneous endoscopic gastrostomy tubes (peg) involves disruption of the gastrointestinal tract with potential peritoneal contamination, patients with indwelling ventriculoperitoneal (vp) shunts could be at increased risk of meningitis, a potentially devastating infection. the safety of peg placement in the presence of a vp shunt is unclear.200528052746
potent antibacterial activity of oligo-3-aminopyridine against staphylococcus aureus and enterococcus faecalis.oligo-3-aminopyridine (oap) was tested for its antibacterial activity against two gram positive (staphylococcus aureus and enterococcus faecalis) and two gram negative (escherchia coli and pseudomonas aeruginosa) bacterial strains. antibacterial efficacy was measured by disk diffusion assay. inhibition zones demonstrated that 50 microg oap showed strong antibacterial activity against the gram-positive strains; the minimum inhibitory concentration (mic) and minimum bactericidal concentration (mbc ...201322900341
expression of wnt signaling molecules in the synovial membranes of rabbit ankle joints injected with enterococcus faecalis cell fractions.abstract the cell adhesion molecule β-catenin mediates the transduction of wnt signals to various downstream events such as gene expression, cell proliferation, and cell adhesion. in this study, the results of reverse transcriptase polymerase chain reaction (rt-pcr) amplification showed that wnt1 and β-catenin expression increased in response to e. faecalis, and that the increases in wnt1 and β-catenin activated transcription of cyclin d1. immunohistochemistry also showed that stimulating wnt1 w ...200324387114
ensilage of tropical grasses mixed with legumes and molasses.the effects of adding two legumes, gliricidia sepium and leucaena leucocephala, cv. cunningham, and molasses on the fermentation characteristics of silages made from two tropical grasses (pangola grass, digitaria decumbens, and setaria sphacelata cv. kazungula) were investigated. pangola grass silages contained significantly higher contents of water-soluble carbohydrates and lactic acid than did setaria silages after 100 days fermentation, but there were no significant differences between the tw ...199424420892
comparative activity of daptomycin and teicoplanin against enterococci isolated from blood and urine.the authors compared the activity of daptomycin with that of ampicillin, penicillin, teicoplanin and vancomycin against 304 strains of enterococcus species isolated from blood and urine. daptomycin was as active as penicillin against enterococcus faecalis: 90% of strains were inhibited by 2 mg/l. daptomycin was more active than vancomycin (90% minimal inhibitory concentration [mic(90)] 2 mg/l; 90% minimal bactericidal concentration [mbc(90)] 8 mg/l) but was less active than teicoplanin (mic(50) ...199222514366
lactic fermentation of poultry droppings with molasses and wheat straw.the ph of wastelage inoculated with lactobacillus plantarum and streptococcus faecalis was more than 5.4 and the off-flavour of poultry droppings, at 51% of dry matter, was not completely removed after 20 days' fermentation. by varying the amount of poultry droppings from 15 to 45% in the pre-mix and by including wheat straw, the ph and total volatile fatty acid production were increased, lactic acid synthesis decreased, and the off-flavour was completely abolished. poultry droppings can be incl ...199124425194
the rapid emergence of high level gentamicin resistance in enterococci.the proportion of enterococci isolated from blood and urine cultures that were highly resistant to gentamicin and streptomycin were determined. no blood or urine isolates highly resistant to gentamicin were seen in 1983, whereas by 1986-87 25% of blood and 17% of urine isolates were highly resistant. the rapid emergence of gentamicin resistance has serious implications for patients with life threatening enterococcal disease.199022553449
enterococcus faecalis endocarditis following percutaneous manipulation of a biliary tract calculus and ercp.a case of enterococcus faecalis endocarditis followed endoscopic retrograde cholangiopancreatography and percutaneous extraction of a biliary calculus is reported. the most likely cause of endocarditis, though unproven, is the latter procedure, as the bile is often infected during biliary tract obstruction, and bacteremia is frequent during percutaneous manipulations. initial therapy with vancomycin was unsuccessful in clearing the bacteremia, possibly due to vancomycin tolerance of the isolate ...199022553458
effect of enterococcus faecalis pyelonephritis on the intracortical accumulation kinetics of gentamicin in rats.the role of serum levels on the intracortical accumulation kinetics of gentamicin was evaluated in normal and enterococcus faecalis-infected kidneys using a short term infusion model in conscious rats. female sprague-dawley rats were infused over a period of 6 h with gentamicin achieving individual steady-state serum levels ranging from 0.5 to 20 μg/ml. pyelonephritis was induced by a direct inoculation of the left kidney with a suspension of e faecalis. this model resulted in severe infection o ...199022553452
urinary tract pathogens-sensitivity to trimethoprim/sulphamethoxazole.abstract the sensitivity to sulphamethizole, sulphamethoxazole (sm), trimethoprim (tmp) and the combination sm/tmp of freshly isolated urinary tract pathogens from hospital patients was studied. out of 798 strains tested primarily, 47% were found to be fully sensitive to sulphamethizole (tablet method), and 81% fully sensitive to the sm/tmp combination (disk method). out of 423 strains with reduced sensitivity to sulphamethizole, 65% were fully sensitive to sm/tmp. out of 391 strains tested seco ...197025607580
antibacterial, antioxidant, anti-cholinesterase potential and flavonol glycosides of biscutella raphanifolia (brassicaceae).different extracts of the aerial parts of biscutella raphanifolia (brassicaceae), which has not been the subject of any study, were screened for the phytochemical content, anti-microbial, antioxidant and anti-cholinesterase activities. we used four methods to identify the antioxidant activity namely, abts(•+), dpph• scavenging, cuprac and ferrous-ions chelating methods. since there is a relationship between antioxidants and cholinesterase enzyme inhibitors, we used two methods to determine the i ...201525553679
diversity of vaginal lactic acid bacterial microbiota in 15 algerian pregnant women with and without bacterial vaginosis by using culture independent method.bacterial vaginosis (bv) is the most common lower genital tract disorder among women of reproductive age (pregnant and non-pregnant) and a better knowledge of lactobacillus species richness in healthy and infected vaginal microbiota is needed to efficiently design better probiotic products to promote the maintenance of normal flora which will help prevent bacterial vaginosis.201627790434
the antimicrobial screening of a barbadian medicinal plant with indications for use in the treatment of diabetic wound infections.diabetes mellitus is a chronic non-communicable disease with high prevalence in the north american and caribbean region. diabetic foot syndrome which is an associated complication can lead to the development of wounds and ulcers which can become infected. justicia secunda, a plant known locally in barbados as bloodroot used in folklore for wound healing, was selected to test its ability to aid diabetic wound healing by antimicrobial activity. it was therefore tested against the bacteria staphylo ...201224020224
physicochemical characterization of water-soluble chitosan derivatives with singlet oxygen quenching and antibacterial water-soluble chitosan derivatives (wsch) were obtained by maillard reaction (mr) between glucosamine (ga) with both low and medium molecular weight chitosans (ch). the wsch showed larger solubility than the respective ch, while their deacetylation degree (dd) decreased by approximately 12%. infrared spectroscopy experiments of wsch confirmed the formation of imine bonds after mr with intensified pyranose structure, and sugar molecules as polymer branches. however, a 6-times reduction of the ...201728396271
ultraviolet-c light as a means of disinfecting anesthesia workstations.anesthesia workstations (aws) are a reservoir for pathogenic organisms potentially associated with surgical site infections. this study examined the effectiveness of the tru-d smartuvc device (tru-d llc, nashville, tn) on bioburden reduction (br) on aws.201728431851
do quaternary ammonium monomers induce drug resistance in cariogenic, endodontic and periodontal bacterial species?antibacterial monomers were developed to combat oral biofilm acids and caries; however, little is known on whether quaternary ammonium monomers (qams) would induce drug resistance in oral bacteria. the objective of this study was to investigate the effects of new antimicrobial monomers dimethylaminohexadecyl methacrylate (dmahdm) and dimethylaminododecyl methacrylate (dmaddm) on the induction of drug resistance in eight species of cariogenic, endodontic and periodontal bacteria for the first tim ...201728755761
validity of somatic cell count as indicator of pathogen-specific intramammary infections.the objective of this study was to determine whether somatic cell count (scc) was an effective test, with a sensitivity exceeding 85%, to determine species-specific bacterial infections. in addition, the relation between the scc and various udder pathogen groups was investigated. scc thresholds of greater than 200 000 cells/ml were used in quarter and greater than 150 000 cells/ml in composite milk samples. a retrospective study was conducted on a data set for 89 635 quarter and 345 467 composit ...201728470079
the curious case of achromobacter eurydice, a gram-variable pleomorphic bacterium associated with european foulbrood disease in honeybees.honeybees are prone to parasite and pathogen infestations/infections due to their social colony life. bacterial pathogens in particular lead to destructive infections of the brood. european foulbrood is caused by the bacterium melissococcus plutonius in combination with several other gram-positive bacteria (achromobacter eurydice, bacillus pumilus, brevibacillus laterosporus, enterococcus faecalis, paenibacillus alvei, paenibacillus dendritiformis) involved as secondary invaders following the in ...201728634639
chemical constituents of helichrysum italicum (roth) g. don essential oil and their antimicrobial activity against gram-positive and gram-negative bacteria, filamentous fungi and candida albicans.the aerial parts of helichrysum italicum (roth) g. don were subjected to hydrodistillation to obtain essential oils which had been analyzed by gas chromatography and gas chromatography coupled with mass spectrometry and tested for antimicrobial activity against 12 bacteria, two yeasts and four fungi by agar diffusion method. the essential oil yielded 0.44% (v/w) and 67 compounds accounting for 99.24% of the oil were identified with a high content of oxygenated sesquiterpenes (61.42%). the most o ...201728725151
1,1ꞌ-carbonyldiimidazole (cdi) mediated facile synthesis, structural characterization, antimicrobial activity and in-silico studies of coumarin-3-carboxamide derivatives.despite of the availability of variety of antibacterial agents, re-emergance of pathogenic bacteria is still a serious medical concern. so, identification of new, safer, and selective antibacterial agents is the key interest in the medicinal chemistry research.201728641525
cytotoxic and antimicrobial activities of cantharellus cibarius fr. (cantarellaceae).antibacterial and cytotoxic activities of cyclohexane, dichloromethane, methanol, and aqueous extracts of cantharellus cibarius were tested. broth microdilution assay was performed against 10 bacterial strains (staphylococcus aureus, s. epidermidis, micrococcus luteus, bacillus subtilis, enterococcus feacalis, escherichia coli, klebsiella pneumoniae, pseudomonas aeruginosa, salmonella abony), with emphasis on helicobacter pylori. methanol extract was the most active against h. pylori strains wit ...201728613963
antibacterial and anticancer activities of acetone extracts from in vitro cultured lichen-forming fungi.lichens that were used in traditional medicine for ages produce numerous secondary metabolites, however our knowledge about biological activities of substances secreted by separated bionts is scarce. the main objectives of this study were to isolate and find optimal conditions for the growth of mycelia from three common lichen-forming fungi, i.e. caloplaca pusilla, protoparmeliopsis muralis and xanthoria parietina and to evaluate antibacterial and antiproliferative activities of their acetone ex ...201728592323
monitoring in vitro antibacterial efficacy of 26 indian spices against multidrug resistant urinary tract infecting screen methanolic extracts of 26 commonly used indian spices against nine species of uropathogenic bacteria (enterococcus faecalis, staphylococcus aureus, acinetobacter baumannii, citrobacter freundii, enterobacter aerogenes, escherichia coli, klebsiella pneumoniae, proteus mirabilis, and pseudomonas aeruginosa), isolated from clinical samples of a tertiary care hospital for antibacterial activity.201428664089
safety evaluation of enterocin producer enterococcus sp. strains isolated from traditional turkish cheeses.the purpose of this study was to determine the antimicrobial activity and occurrence of bacteriocin structural genes in enterococcus spp. isolated from different cheeses and also investigate some of their virulence factors. enterococcus strains were isolated from 33 different cheeses. enterococcus faecium (6 strains) and enterococcus faecalis (5 strains) enterocin-producing strains were identified by 16s rdna analyses. structural genes enta, entb, entp and entx were detected in some isolates. mu ...201728735309
isolation and characterization of lactic acid bacteria from traditional pickles of himachal pradesh, india.a total of 15 isolates of lactic acid bacteria (lab) were isolated from traditional pickles of rural and urban areas of himachal pradesh. these isolates were identified as enterococcus faecalis (7), lactobacillus plantarum (3), pediococcus pentosaceus (2), leuconostoc mesenteroides (1), lactococcus lactis (1) and enterococcus sp. (1) on the basis of morphological, biochemical and 16s rdna sequence analysis. all the labs produced exopolysaccharides, have antibiotic susceptibility, and possess act ...201728720951
inactivation of bacterial biofilms by visible light-activated unmodified zno nanorods.various zinc oxide (zno) nanostructures are widely used for photocatalytic antibacterial applications. since zno possess a wide bandgap, it is believed that only uv light may efficiently assist bacterial inactivation and diverse crystal lattice modifications should be applied in order to narrow the bandgap for efficient visible light absorption. in this work we show that even unmodified zno nanorods grown by aqueous chemical growth technique were found to possess intrinsic defects which can be a ...201728628486
characterization of high exopolysaccharide-producing lactobacillus strains isolated from mustard pickles for potential probiotic applications.the aim of this study was to characterize high exopolysaccharide (eps)-producing lactic acid bacteria (lab) isolated from mustard pickles in taiwan for potential probiotic applications. among 39 collected lab strains, four most productive eps-producing strains were selected for further analysis. comparative analyses of 16s rdna genes rpoa and phes sequences demonstrated that these strains were members of lactobacillus plantarum-group (lpg). ncd 2, nld 4, slc 13, and nld 16 showed survival rates ...201728617525
seven new lignan glycosides from the branches of alangium kurzii craib var. new lignan glycosides (1-3, 8-10, and 14) and 17 known compounds were isolated from the branches of alangium kurzii craib var. laxifolium. their structures were established by spectroscopic analysis and circular dichroism (cd) and x-ray analysis. the isolated compounds were evaluated for their antibacterial activities against staphylococcus aureus ci1011, streptococcus suis ci1608, salmonella gallinarum ci0912, enterococcus faecalis ci1304, aeromonas hydrophila ci1008, escherichia coli ci1 ...201728733150
anti-inflammatory and regenerative effects of albanian propolis in experimental vital amputations.this study evaluated the effects of albanian propolis on the inflamed pulpal tissue after pulpotomy in piglets. in five piglets, two teeth each were infected using special pathogenic microbial flora that was prepared in advance in order to cause inflammation of the pulp. pulpotomy was performed in the maxillary and mandibular central and lateral incisors. microbial flora pathogenesis prepared from the section of infected teeth, containing staphylococcus aureus, streptococcus viridans, enterococc ...201628509506
[distribution and drug resistance of pathogens at hematology department of jiangsu province from 2014 to 2015: results from a multicenter, retrospective study].objective: to describe the distribution and drug resistance of pathogens at hematology department of jiangsu province from 2014 to 2015 to provide reference for empirical anti-infection treatment. methods: pathogens were from hematology department of 26 tertiary hospitals in jiangsu province from 2014 to 2015. antimicrobial susceptibility testing was carried out according to a unified protocol using kirby-bauer method or agar dilution method. collection of drug susceptibility results and corresp ...201728810329
efficacy of radiant catalytic ionization to reduce bacterial populations in air and on different surfaces.air contamination by biological agents is often observed in medical or veterinary facilities and industrial plants. bioaerosols may sediment and pose the surface contamination. microorganisms present on them may become a source of infections among humans and food contamination. this study determined the use of oxidative gases, including ozone and peroxide, generated by the radiant catalytic ionization (rci) cell for the inactivation of acinetobacter baumannii, escherichia coli, enterococcus faec ...201728803189
antimicrobial activities of widely consumed herbal teas, alone or in combination with antibiotics: an in vitro study.because of increasing antibiotic resistance, herbal teas are the most popular natural alternatives for the treatment of infectious diseases, and are currently gaining more importance. we examined the antimicrobial activities of 31 herbal teas both alone and in combination with antibiotics or antifungals against some standard and clinical isolates of pseudomonas aeruginosa, acinetobacter baumannii, escherichia coli, klebsiella pneumoniae, enterococcus faecalis, methicillin susceptible/resistant s ...201728761777
antimicrobial susceptibility among gram-positive and gram-negative organisms collected from the latin american region between 2004 and 2015 as part of the tigecycline evaluation and surveillance trial.the in vitro activity of tigecycline and comparator agents was evaluated against gram-positive and gram-negative isolates collected in latin american centers between 2004 and 2015 as part of the tigecycline evaluation and surveillance trial (t.e.s.t.) global surveillance study.201728701170
investigation and analysis of the characteristics and drug sensitivity of bacteria in skin ulcer ulcer is a common type of disease affecting patients' health and quality of life, and bacterial infection increases the difficulty of its management.201728689800
patterns of multi-drug resistant bacteria at first culture from patients admitted to a third level university hospital in calabria from 2011 to 2014: implications for empirical therapy and infection control.surveillance of antimicrobial drug resistance is fundamental to guide empirical treatment. however, the european antimicrobial resistance surveillance network provides a general picture, which might not be applicable to clinical settings that are excluded from this survey. we evaluated resistance patterns of eskape isolates over a four-year period in a third level university hospital in the province of catanzaro (southern italy). in this retrospective study, we evaluated the frequency of eskape ...201728603227
evaluation of the in vitro antimicrobial activity of selected saudi scorpion venoms tested against multidrug-resistant micro-organisms.scorpion venoms are a rich source of bioactive peptides with promising clinical value that may lead to the discovery and development of new drugs. the present study was designed to evaluate the in vitro antimicrobial activities of the venoms extracted from three medically important saudi scorpions (androctonus crassicauda, androctonus bicolor and leiurus quinquestriatus).201728587870
antimicrobial efficacy of triple antibiotic-eluting polymer nanofibers against multispecies biofilm.the elimination of microbial flora in cases of immature permanent teeth with necrotic pulp is both key and a challenging goal for the long-term success of regenerative therapy. recent research has focused on the development of cell-friendly intracanal drug delivery systems. this in vitro study aimed to investigate the antimicrobial action of 3-dimensional (3d) tubular-shaped triple antibiotic-eluting nanofibrous constructs against a multispecies biofilm on human dentin. polydioxanone polymer sol ...201728778504
disulfide bonds: a key modification in bacterial extracytoplasmic proteins.disulfide bonds are a common posttranslational modification that contributes to the folding and stability of extracytoplasmic proteins. almost all organisms, from eukaryotes to prokaryotes, have evolved enzymes to make and break these bonds. accurate and efficient disulfide bond formation can be vital for protein function; therefore, the enzymes that catalyze disulfide bond formation are involved in multiple biological processes. recent advances clearly show that oral bacteria also have the abil ...201728797211
screening of aqueous extracts of medicinal herbs for antimicrobial activity against oral caries is considered to be a preventable disease, and various antimicrobial agents have been developed for the prevention of dental diseases; however, many bacteria show resistance to existing agents. in this study, 14 medicinal herbs were evaluated for antimicrobial activity against five common oral bacteria as a screen for potential candidates for the development of natural antibiotics.201328664049
in vitro selection and identification of potential probiotics isolated from the gastrointestinal tract of nile tilapia, oreochromis gut bacteria can be used as probiotics for aquaculture. the aim of this study is to screen and identify beneficial probiotic bacteria from the gut of nile tilapia, oreochromis niloticus. nine out of one hundred thirty-five isolates were non-pathogenic through intraperitoneal injection and had antibacterial activities with at least a strain from the five isolated fish pathogens, aeromonas sobria, aeromonas hydrophila, pseudomonas aeruginosa, pseudomonas putida, and staphylococcus aureus. fur ...201728819794
induction of cryptic and bioactive metabolites through natural dietary components in an endophytic fungus colletotrichum gloeosporioides (penz.) sacc.grape skin and turmeric extracts having the major components resveratrol and curcumin, respectively, were used for the induction of cryptic and bioactive metabolites in an endophytic fungus colletotrichum gloeosporioides isolated from syzygium cumini. the increase in total amount of crude compounds in grape skin and turmeric extract treated cultures was 272.48 and 174.32%, respectively, compared to the untreated control. among six human pathogenic bacteria tested, the maximum inhibitory activity ...201728674526
the antibacterial and antifungal activity of six essential oils and their cyto/genotoxicity to human hel 12469 cells.six essential oils (from oregano, thyme, clove, lavender, clary sage, and arborvitae) exhibited different antibacterial and antifungal properties. antimicrobial activity was shown against pathogenic (escherichia coli, salmonella typhimurium, yersinia enterocolitica, staphylococcus aureus, listeria monocytogenes, and enterococcus faecalis) and environmental bacteria (bacillus cereus, arthrobacter protophormiae, pseudomonas fragi) and fungi (chaetomium globosum, penicillium chrysogenum, cladospori ...201728811611
phytochemical screening, antimicrobial and cytotoxicity studies of ethanol leaf extract of aphaniasenegalensis (sapindaceae).aphania senegalensis (sapindaceae) is commonly used in senegalese traditional medicine to treat pain, inflammation, asthenia, bacterial and fungal infections. the aim of this study was to determine the type of phytochemical constituents present in the ethanol leaf extract and its antimicrobial activity against selected bacterial and fungal pathogens.201728638876
antimicrobial and antioxidant activities of the extract and fractions of tetradenia riparia (hochst.) codd (lamiaceae) leaves from brazil.tetradenia riparia (lamiaceae) is native to central africa popularly known as myrrh, used in folk medicine to treat various diseases like malaria, gastroenteritis, and tropical skin disease. this research was to evaluate the antioxidant and antibacterial activities of the crude extract (ce) and fractions (fr) of the t. riparia by classical chromatography. the ce of t. riparia leaves was submitted to column chromatographic fractionation to obtain four fractions of the interest, which were identif ...201728840299
cyclohexene-fused 1,3-oxazines with selective antibacterial and antiparasitic action and low cytotoxic effects.oxazine derivatives, a class of heterocyclic compounds, exhibit a variety of biological properties, such as anticonvulsant and antitumor activities. in this study, we evaluated the effect of two cyclohexene-fused 1,3-oxazines (cis‑1-benzyl-n-phenyl-1,4,4a,5,8,8a-hexahydro-3,1-benzoxazin-2-imine (1) and trans‑n-phenyl-1,4,4a,5,8,8a-hexahydro-3,1-benzoxazin-2-imine (2)) in cultures of bacillus cereus, enterococcus faecalis, escherichia coli, klebsiella pneumoniae, salmonella enterica, serratia mar ...201728755871
detection of eight foodborne bacterial pathogens by oligonucleotide array hybridization.simultaneous and rapid detection of multiple foodborne bacterial pathogens is important for the prevention of foodborne illnesses.201728713514
high level bacterial contamination of secondary school students' mobile phones.while contamination of mobile phones in the hospital has been found to be common in several studies, little information about bacterial abundance on phones used in the community is available. our aim was to quantitatively determine the bacterial contamination of secondary school students' mobile phones.201728626737
self assembled snowball-like hybrid nanostructures comprising viburnum opulus l. extract and metal ions for antimicrobial and catalytic applications.herein, we report the production of novel organic-inorganic nanobio-catalytic and antimicrobial agents called "nanosnowball" (nsbs) with a rational design and elucidate the increase in the catalytic and antimicrobial activities. the nsbs resemble to guelder rose were formed of the extract of viburnum opulus (vo) as the organic component and copper (ii) ions (cu(2+)) as the inorganic component. the effects of the vo extract and cu(2+) concentrations on the morphology of nsbs were systematically e ...201728465062
use of whey as a culture medium for bacillus clausii for the production of protein hydrolysates with antimicrobial and antioxidant activity.the use of whey as a natural culture medium to produce hydrolysates with antimicrobial from bacillus clausii is the objective of this research. the fermentation process was carried out at 25 ℃ for five days, where proteolytic activity, soluble peptides quantification, and antimicrobial activity using the disc diffusion method were determined every day. the fermented whey reached values ​​of proteolytic activity between 90 and 260 u ml(-1) and a production of soluble peptides between 100 and 2070 ...201728816527
growth inhibition and antibiofilm potential of ag nanoparticles coated with lectin, an arthropod immune molecule.lectins from the haemolymph of arthropods, including crustaceans, are molecules potentially involved in the immune recognition and phagocytosis. here, lectin was purified from the haemolymph of blue swimmer crab portunus pelagicus, using mannose-coupled sepharose cl-4b affinity column chromatography. in sds-page analysis, lectin showed a molecular mass of approximately 155kda. the synthesis of lectin-coated silver nanoparticles (lectin-coated agnps) was confirmed by uv-vis spectroscopy, xrd, fti ...201728441606
in vitro antimicrobial activity screening of xylaria hypoxylon.fungi have a potential of using both as nutritive and medicinal food stuff. because of containing several therapeutic agents, they are reported to be used for hundreds of years to treat several diseases caused by bacteria, fungi, viruses and parasites. the aim of this study is to determine the in vitro antimicrobial activity of xylaria hypoxylon, which were collected from yomra, trabzon, turkey.201628852719
synthesis and antimicrobial activity of chiral quaternary n-spiro ammonium bromides with 3',4'-dihydro-1'h-spiro[isoindoline-2,2'-isoquinoline] skeleton.a new class of highly functionalized tetrahydroisoquinolines with a quaternary carbon stereocenter was synthesized starting from an easily accessible l-tartaric acid. nine strains of bacteria (staphylococcus aureus, streptococcus pyogenes, streptococcus mutans, streptococcus salivarius, bacillus subtilis, enterococcus faecalis, moraxella catarrhalis, escherichia coli, campylobacter jejuni) were used for the determination of minimal inhibitory concentration (mic) and minimal bactericidal concentr ...201728740363
a prospective randomised trial of isolated pathogens of surgical site infections (ssi).every surgical wound is colonized by bacteria, but only a small percentage displays symptoms of infection. the distribution of pathogens isolated in surgical site infections has not significantly changed over the last decades. staph. aureus, coag(-) staphylococci, enterococcus spp and e. coli are the main strains appearing. in addition, a continuously rising proportion of surgical site infections caused by resistant bacterial species (mrsa, c. albicans) has been reported.201728761643
implementation of the new virtuo blood culture system: evaluation and comparison to the 3d system using simulated blood evaluate the performances of the newly approved bact/alert virtuo blood culture system for the recovery of bloodstream pathogens and compare it to the bact/alert 3d system.201728583022
comparative antimicrobial efficacy of selected root canal irrigants on commonly isolated microorganisms in endodontic infection.this study aims to evaluate and compare the antimicrobial efficacy of three selected root canal irrigants (biopure mtad, metronidazole, aztreonam) against microbes commonly isolated from polymicrobial microbiota of root canal infection.201728435359
azathioprine, mercaptopurine, and 5-aminosalicylic acid affect the growth of ibd-associated campylobacter species and other enteric microbes.campylobacter concisus is a bacterium that is associated with inflammatory bowel disease (ibd). immunosuppressive drugs including azathioprine (aza) and mercaptopurine (mp), and anti-inflammatory drug such as 5-aminosalicylic acid (5-asa) are commonly used to treat patients with ibd. this study aimed to examine the effects of aza, mp, and 5-asa on the growth of ibd-associated bacterial species and to identify bacterial enzymes involved in immunosuppressive drug metabolism. a total of 15 bacteria ...201728424670
efficacy and safety of probiotic-supplemented triple therapy for eradication of helicobacter pylori in children: a systematic review and network meta-analysis.the aim of this study was to identify the best probiotic supplementation in triple therapy for pediatric population with helicobacter pylori infection.201728681177
[bifidobacterium scardovii isolated from 2 consecutive urine samples].bifidobacterium scardovii species consists of facultative anaerobic gram-positive rods whose growth is stimulated by co2 and anaerobiosis. exceptionally it has been associated with infections in humans. an elderly male patient with a urinary tract infection due to b. scardovii and enterococcus faecalis is presented here; both microorganisms were isolated from two consecutive urine samples. the bacillus did not grow on standard media, but on chocolate agar incubated in co2 and on supplemented bru ...201728734711
in vitro evaluation of cytotoxic, anti-proliferative, anti-oxidant, apoptotic, and anti-microbial activities of cladonia pocillum.the aim of this study was to investigate the anti-proliferative, apoptotic, cytotoxic, and anti-oxidant effects of extracts from the lichen cladonia pocillumon human breast cancer cells (mcf-7), and to characterize the anti-microbial features.  mcf-7 cells were treated with methanolic c. pocillum extract for 24h. the cytotoxicity of the extract was tested with mtt. moreover, its anti-proliferative effects were examined with immunocytochemical method. apoptosis and biochemical parameters were det ...201728838343
investigation of effect of 1,8-cineole on antimicrobial activity of chlorhexidine gluconate.chlorhexidine belongs to a group of medicines called antiseptic antibacterial agents. chlorhexidine is commonly used for the care and clean off the skin, hands, and wounds. in recent years, medicinal and aromatic plants have been used for prevention of disease, maintaining health, and improving disease in traditional and modern medicine as a medicament. according to recent research, cineole is the isolated active agent of eucalyptus oil and possesses antimicrobial activity. it was demonstrated t ...201728827963
proinflammatory mg-63 cells response infection with enterococcus faecalis cps2 evaluated by the expression of tlr-2, il-1β, and inos mrna.we have previously demonstrated that unencapsulated enterococcus faecalis cps2 inhibits biofilm formation of candida albicans, a fungus commonly found with e. faecalis in periapical lesion. in this study, we compared encapsulated and unencapsulated e. faecalis cps2 strains relationship with osteoblastic (mg-63) cells, whereas e. faecalis atcc 29212 were used as a reference strain.201728800779
antibacterial and antifungal activity of endodontic intracanal medications.the sterilization of the entire root canal system represents the main goal of every endodontist, given the fact that the control of the microbial flora is the key point of every root canal treatment. the diversity of microorganisms found inside the root canal and also the resistance of some bacterial species to intracanal medications led to a continuous development of new endodontic products. the present study focuses on the comparison of the antibacterial and antifungal properties of different ...201728781531
antimicrobial and immunomodulatory activity of host defense peptides, clavanins and ll-37, in vitro: an endodontic perspective.endodontic treatment is mainly based on root canal disinfection and its failure may be motivated by microbial resistance. endodontic therapy can be benefitted by host defense peptides (hdps), which are multifunctional molecules that act against persistent infection and inflammation. this study aimed to evaluate the antimicrobial, cytotoxic and immunomodulatory activity of several hdps, namely clavanin a, clavanin a modified (mo) and ll-37, compared to intracanal medication ca(oh)2. hdps and ca(o ...201728712894
thymus vulgaris l. extract has antimicrobial and anti-inflammatory effects in the absence of cytotoxicity and genotoxicity.this study evaluated the biological effects of the t. vulgaris l. extract., such as antimicrobial activity on planktonic cultures and mono- and polymicrobial biofilms, cytotoxicity, anti-inflammatory activity and genotoxicity.201728683409
comparison of the antimicrobial efficacy of calcium hydroxide and photodynamic therapy against enterococcus faecalis and candida albicans in teeth with periapical lesions; an in vivo study.introduction: elimination of pathological microflora of root canal systems is a major goal in endodontic treatment. this study aimed to compare the antimicrobial efficacy of calcium hydroxide as an intracanal medication and antibacterial photodynamic therapy (apdt) against enterococcus faecalis and candida albicans in teeth with periapical (pa) lesions. methods: this in vivo study was conducted on 20 patients with single-rooted mandibular premolar with previously failed endodontic treatment. thi ...201728652899
in vitro evaluation of antimicrobial activity of alimentary canal extracts from the red palm weevil, rhynchophorus ferrugineus olivier larvae.the invasive red palm weevil, rhynchophorus ferrugineus olivier (coleoptera: curculionidae), is considered one of the world's most devastating insect pests to palm trees. it was observed that larvae of this pest are able to inhibit microbial growth on the rearing media when they start feeding and this observation has led us to study the effect of red palm weevils on various microbial species. the antimicrobial effect of extracts from different parts of the alimentary canal on gram positive bacte ...201728612029
formulation and evaluation of sol-gel drug delivery system for intracanal ph sensitive controlled delivery of chlorhexidine.persistence of viable micro-organisms even after thorough chemomechanical debridement has been cited as a major cause for endodontic failure. chlorhexidine is a drug, which has shown marked efficacy against enterococcus faecalis and candida spp., which are mostly accounted for endodontic failure and it has demonstrated high degree of substantivity to dentin by adsorption. another issue with chlorhexidine and other intracanal medicaments is the excessive or premature peaking of the drug leading t ...201728571266
antimicrobial and anti-biofilm properties of polypropylene meshes coated with metal-containing dlc thin films.a promising strategy to reduce nosocomial infections related to prosthetic meshes is the prevention of microbial colonization. to this aim, prosthetic meshes coated with antimicrobial thin films are proposed. commercial polypropylene meshes were coated with metal-containing diamond-like carbon (me-dlc) thin films by the magnetron sputtering technique. several dissimilar metals (silver, cobalt, indium, tungsten, tin, aluminum, chromium, zinc, manganese, tantalum, and titanium) were tested and com ...201728560581
application of hyperosmotic nanoemulsions in wound healing: partial thickness injury model in swine.objective: in this work, we introduce a novel hyperosmotic nanoemulsion (hne) topical agent for use in wound healing. these topical emulsion complexes combine a lipophilic thymol nanoemulsion with a hyperosmotic saccharide matrix. this combination has been previously shown to possess synergistic antimicrobial activity against a host of common and drug-resistant pathogens in vitro. approach: in this study, we present additional data to assess the safety and efficacy of these emulsions in a partia ...201728507786
microbiological analysis of acute infections of the nail fold on the basis of bait thread acute infection of the nail fold, called paronychia, is a common clinical problem. the basis for the implementation of the treatment is the result of microbiological examination. due to the rapid and painful course of infection, usually an empirical antimicrobial treatment prior to obtaining microbiological test results is introduced.201728507488
comparative evaluation of antimicrobial efficacy of triple antibiotic paste, calcium hydroxide, and a proton pump inhibitor against resistant root canal pathogens.the objective of this study is to compare the antimicrobial efficacy of triple antibiotic paste (tap) and a proton pump inhibitor (ppi) (omeprazole) in combination with calcium hydroxide (ch) against enterococcus faecalis and candida albicans.201728435366
efficacy of three different lasers on eradication of enterococcus faecalis and candida albicans biofilms in root canal system.the objective was to compare the efficacy of three different lasers in disinfection of root canals inoculated with enterococcus faecalis and candida albicans biofilms.201728426292
antimicrobial photodynamic therapy against endodontic enterococcus faecalis and candida albicans mono and mixed biofilms in the presence of photosensitizers: a comparative study with classical endodontic irrigants.endodontic biofilms eradication from the infected root canal system remains as the primary focus in endodontic field. in this study, it was assessed the efficacy of antimicrobial photodynamic therapy (apdt) with the zn(ii)chlorin e6 methyl ester (zn(ii)e6me) activated by red light against monospecies and mixed biofilms of enterococcus faecalis and candida albicans. the results were compared with the ones obtained with rose bengal (rb), toluidine blue-o (tbo), the synthetic tetracationic porphyri ...201728424663
antimicrobial and antibiofilm activities of mta supplemented with bismuth lipophilic nanoparticles.the objective of this work was to determine the antimicrobial and antibiofilm properties of mineral trioxide aggregate (mta) supplemented with bismuth lipophilic nanoparticles (bisbal nps). the antimicrobial activity of the composite mta-bisbal nps was determined by the disk diffusion assay, while antibiofilm activity was analyzed by fluorescence microscopy. the cytotoxicity of mta-bisbal nps was determined on human gingival fibroblasts by optical microscopy and crystal violet staining. mta-bisb ...201728420830
Displaying items 14001 - 14100 of 14299