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Candida albicans

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https://www.readbyqxmd.com/read/28319414/preparation-and-characterization-of-zno-nanoparticles-coated-by-chitosan-linoleic-acid-fungal-growth-and-biofilm-assay
#1
S Barad, M Roudbary, A Nasrollahi Omran, M Porgham Daryasari
INTRODUCTION: This study has been carried out on reviewing the use of new synthetic component of zinc oxide nanoparticles (ZnO NPs) coated by Chitosan-linoleic acid (CS-LA) and to assess Minimum inhibitory concentration (MIC) of nanoparticles on clinical samples and biofilm formation in vitro. MATERIALS AND METHODS: At first the synthesized ZnO NPs coated by CS-LA were identified with X-ray powder diffraction (XRD), Scanning electron microscope (SEM), Transmission electron microscope (TEM) and Fourier Transform Infrared Spectroscopy analysis (FTIR)...
2017: Bratislavské Lekárske Listy
https://www.readbyqxmd.com/read/28318900/epidemiological-and-mycological-characteristics-of-candidemia-in-iran-a-systematic-review-and-meta-analysis
#2
REVIEW
A Vaezi, H Fakhim, S Khodavaisy, A Alizadeh, M Nazeri, A Soleimani, T Boekhout, H Badali
To date, there has been no comprehensive review of the epidemiology, risk factors, species distribution, and outcomes of candidemia in Iran. This study aimed to perform a systematic review and meta-analysis of all reported candidemia cases in Iran until December 2015. The review process occurred in three steps, namely a literature search, data extraction and statistical analyses. After a comprehensive literature search, we identified 55 cases. The mean age of patients was 46.80±24.30 years (range 1-81 years)...
March 16, 2017: Journal de Mycologie Médicale
https://www.readbyqxmd.com/read/28318058/nuclear-codon-reassignments-in-the-genomics-era-and-mechanisms-behind-their-evolution
#3
REVIEW
Martin Kollmar, Stefanie Mühlhausen
The canonical genetic code ubiquitously translates nucleotide into peptide sequence with several alterations known in viruses, bacteria, mitochondria, plastids, and single-celled eukaryotes. A new hypothesis to explain genetic code changes, termed tRNA loss driven codon reassignment, has been proposed recently when the polyphyly of the yeast codon reassignment events has been uncovered. According to this hypothesis, the driving force for genetic code changes are tRNA or translation termination factor loss-of-function mutations or loss-of-gene events...
March 20, 2017: BioEssays: News and Reviews in Molecular, Cellular and Developmental Biology
https://www.readbyqxmd.com/read/28317391/in-vitro-inhibitory-effects-of-farnesol-and-interactions-between-farnesol-and-antifungals-against-biofilms-of-candida-albicans-resistant-strains
#4
Jinping Xia, Fang Qian, Wenqian Xu, Zhenzhen Zhang, Xin Wei
Antifungal resistance is a serious problem in clinical infections. Farnesol, which is a potential antifungal agent against biofilms formed by Candida albicans resistant strains (a fluconazole-resistant isolate derived from SC5314 and two clinical Candida resistant isolates), was investigated in this study. The inhibitory effects of farnesol on biofilms were examined by XTT assay. The morphological changes and biofilm thicknesses were analyzed by scanning electron microscopy and confocal laser scanning microscopy, respectively...
March 20, 2017: Biofouling
https://www.readbyqxmd.com/read/28317025/marker-recycling-in-candida-albicans-through-crispr-cas9-induced-marker-excision
#5
Manning Y Huang, Aaron P Mitchell
We describe here a new approach to marker recycling, a controlled sequence of steps in which a genetic marker is selected and then lost. Marker recycling is important for genetic manipulation, because it allows a single selection marker to be used repeatedly. Our approach relies upon the ability of the CRISPR-Cas9 system to make a targeted double-strand break in DNA and the expectation that a double-strand break within a selection marker may promote recombination between directly repeated sequences that flank the marker...
March 2017: MSphere
https://www.readbyqxmd.com/read/28316949/evaluation-of-the-role-of-probiotics-in-endodontic-treatment-a-preliminary-study
#6
Aarti Bohora, Sharad Kokate
AIMS AND OBJECTIVES: The principal goal of endodontics is the prevention of periapical infection. Acute and chronic apical periodontitis occur due to the persistence of pathogenic microorganisms such as Enterococcus faecalis and Candida albicans harboring the root canal systems of the teeth. The concept of the use of probiotics in addressing endodontic disease is new and has not been studied adequately. On the basis of the success of probiotics in periodontal treatment, this preliminary work was performed (a) to evaluate the antibacterial efficacy of probiotics against common endodontic pathogens, i...
January 2017: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/28314677/vulvovaginal-candidiasis-etiology-symptomatology-and-risk-factors
#7
L Mtibaa, N Fakhfakh, A Kallel, S Belhadj, N Belhaj Salah, N Bada, K Kallel
OBJECTIVE: To determine epidemiological, clinical and mycological characteristics of vulvovaginal candidiasis (VVC) in Tunisian population and to evaluate predisposing factors. PATIENTS AND METHODS: In this retrospective study, 2160 vaginal swabs were performed over 2 years (January 2014-December 2015). It was carried out at the laboratory of Parasitology and Mycology, Rabta Hospital in Tunisia. After swab collecting, direct examination and culture on Sabouraud Chloramphenicol and Sabouraud Chloramphenicol Actidione media were implemented to research yeasts...
March 14, 2017: Journal de Mycologie Médicale
https://www.readbyqxmd.com/read/28303980/comparison-of-oral-candida-species-prevalence-and-carriage-among-gutka-chewers-and-betel-quid-chewers
#8
Tariq Abduljabbar, Mudassir Hussain, Tariq Adnan, Fahim Vohra, Fawad Javed
OBJECTIVE: To compare prevalence and carriage of Candida species among gutka-chewers and betel-quid-chewers. METHODS: The cross-sectional case-control study was conducted between January and December, 2015 at the Oral Surgery department of Abbasi Shaheed Hospital and the Dental department of Jinnah Postgraduate Medical Centre, Karachi, and comprised oral yeast samples of gutka-chewers, betel-quid-chewers, and non-chewers. A standardised questionnaire was used to gather demographic data and oral hygiene maintenance information...
March 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28303823/bacterial-and-fungal-biofilm-formation-on-contact-lenses-and-their-susceptibility-to-lens-care-solutions
#9
Siddharth Kackar, Ethel Suman, M Shashidhar Kotian
BACKGROUND: Microbial biofilm formation on contact lenses and lens storage cases may be a risk factor for contact lens-associated corneal infections. Various types of contact lens care solutions are used to reduce microbial growths on lenses. OBJECTIVES: The present study aimed at comparing the growths of biofilms on the different contact lenses and lens cases. The study also aimed at determining the effect of lens care solutions and bacteriophage on these biofilms...
January 2017: Indian Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28303159/antifungal-activity-of-the-ethanol-extract-from-flos-rosae-chinensis-with-activity-against-fluconazole-resistant-clinical-candida
#10
Lulu Zhang, Hui Lin, Wei Liu, Baodi Dai, Lan Yan, YongBing Cao, Yuan-Ying Jiang
This study was designed to investigate the antifungal activity of a hydroalcoholic extract from Flos Rosae Chinensis (FRC) combined with fluconazole (FCZ) against clinical isolates of Candida albicans resistant to FCZ. The minimum inhibitory concentration (MIC) of FRC was determined using a checkerboard microdilution assay. The synergistic effects of the combination of FRC and FCZ against clinical isolates of C. albicans resistant to FCZ were further confirmed by constructing time-growth curves and performing an agar diffusion test...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28303122/antifungal-drug-susceptibility-of-candida-species-isolated-from-hiv-positive-patients-recruited-at-a-public-hospital-in-s%C3%A3-o-lu%C3%A3-s-maranh%C3%A3-o-brazil
#11
Ana L G Terças, Sirlei G Marques, Eduardo B Moffa, Márcia B Alves, Conceição M P S de Azevedo, Walter L Siqueira, Cristina A Monteiro
Oropharyngeal candidiasis is the most common fungal infection in hospitalized patients with acquired immune deficiency syndrome (AIDS). Its progression results in invasive infections, which are a significant cause of morbidity and mortality. This study aimed to quickly and accurately identify Candida spp. from oral mucosa of AIDS patients recruited at Presidente Vargas Hospital, in São Luís city, Brazil and to evaluate the sensitivity profile of these fungi to antifungals by using an automated system. Isolates were collected from oropharyngeal mucosa of 52 hospitalized AIDS patients, under anti-viral and antifungal therapies...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28300045/-nature-cures-an-alternative-herbal-formulation-as-a-denture-cleanser
#12
R Sushma, Tanuja Tanaji Sathe, Anand Farias, Pronob Kumar Sanyal, Shashi Kiran
BACKGROUND: Candida albicans is one of the microorganisms which harbor the oral cavity, especially in elderly. However, the incidence of existence of this increases in patients using removable dental prosthesis. There is therefore a need to test the anticandidal efficacy of these cost-effective, easily available products to be used as routine denture cleansers. AIM AND OBJECTIVES: (1) To evaluate antifungal properties of triphala churna on the heat cure denture base material...
January 2017: Annals of African Medicine
https://www.readbyqxmd.com/read/28299831/effectiveness-of-ageratina-pichinchensis-extract-in-patients-with-vulvovaginal-candidiasis-a-randomized-double-blind-and-controlled-pilot-study
#13
Ofelia Romero-Cerecero, Ana Laura Islas-Garduño, Alejandro Zamilpa, Jaime Tortoriello
Previous clinical studies have demonstrated the antifungal effectiveness of Ageratina pichinchensis extracts when topically administered to patients with dermatomycosis. The objective of this study was to evaluate the effectiveness and tolerability of a 7% standardized extract of A. pichinchensis (intravaginal) in patients with vulvovaginal candidiasis. The extract was standardized in terms of its encecalin content and administered during 6 days to patients with Candida albicans-associated vulvovaginitis. The positive control group was treated with Clotrimazole (100 mg)...
March 16, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28298975/evaluation-of-antimicrobial-and-antifungal-efficacy-of-chitosan-as-endodontic-irrigant-against-enterococcus-faecalis-and-candida-albicans-biofilm-formed-on-tooth-substrate
#14
Pankaj Yadav, Sarika Chaudhary, Rajendra K Saxena, Sangeeta Talwar, Sudha Yadav
BACKGROUND: Bacterial biofilms formed on the root canal wall are often difficult to remove. This study aimed to evaluate the cytotoxic effect and antibacterial efficacy of chitosan when used as root canal irrigant against E. Faecalis and Candida albicans biofilm formed on tooth substrate. MATERIAL AND METHODS: The present study evaluated antibacterial effect of 0.25% Chitosan, 0.5% Chitosan, 2% chlorhexidine and 3% sodium hypochlorite against Enterococcus faecalis and Candida Albicans...
March 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28298477/central-role-of-the-trehalose-biosynthesis-pathway-in-the-pathogenesis-of-human-fungal-infections-opportunities-and-challenges-for-therapeutic-development
#15
REVIEW
Arsa Thammahong, Srisombat Puttikamonkul, John R Perfect, Richard G Brennan, Robert A Cramer
Invasive fungal infections cause significant morbidity and mortality in part due to a limited antifungal drug arsenal. One therapeutic challenge faced by clinicians is the significant host toxicity associated with antifungal drugs. Another challenge is the fungistatic mechanism of action of some drugs. Consequently, the identification of fungus-specific drug targets essential for fitness in vivo remains a significant goal of medical mycology research. The trehalose biosynthetic pathway is found in a wide variety of organisms, including human-pathogenic fungi, but not in humans...
June 2017: Microbiology and Molecular Biology Reviews: MMBR
https://www.readbyqxmd.com/read/28297749/endophytic-diaporthe-sp-ed2-produces-a-novel-anti-candidal-ketone-derivative
#16
Woei Yenn Tong, Chean Ring Leong, Wen Nee Tan, Melati Khairuddean, Latiffah Zakaria, Darah Ibrahim
This study was aimed to ascertain the anti-candidal efficacy of a novel ketone derivative isolated from Diaporthe sp. ED2, an endophytic fungus residing in medicinal herb Orthosiphon stamieus Benth. The ethyl acetate extract of the fungal culture was separated by open column and reverse phase- high performance liquid chromatography. The eluent of the second peak at retention time 5.64 minute in the HPLC system was the only peak that exhibited anti-candidal activity on Kirby Bauer assay. The structure of the compound was also elucidated by nuclear magnetic resonance and spectroscopy techniques...
March 15, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28296967/the-combined-rapid-detection-and-species-level-identification-of-yeasts-in-simulated-blood-culture-using-a-colorimetric-sensor-array
#17
Nabin K Shrestha, Sung H Lim, Deborah A Wilson, Ana Victoria SalasVargas, Yair S Churi, Paul A Rhodes, Peter J Mazzone, Gary W Procop
BACKGROUND: A colorimetric sensor array (CSA) has been demonstrated to rapidly detect and identify bacteria growing in blood cultures by obtaining a species-specific "fingerprint" of the volatile organic compounds (VOCs) produced during growth. This capability has been demonstrated in prokaryotes, but has not been reported for eukaryotic cells growing in culture. The purpose of this study was to explore if a disposable CSA could differentially identify 7 species of pathogenic yeasts growing in blood culture...
2017: PloS One
https://www.readbyqxmd.com/read/28296382/human-%C3%AE-defensin-6-a-small-peptide-that-self-assembles-and-protects-the-host-by-entangling-microbes
#18
Phoom Chairatana, Elizabeth M Nolan
Human α-defensin 6 (HD6) is a 32-residue cysteine-rich peptide that contributes to innate immunity by protecting the host at mucosal sites. This peptide is produced in small intestinal Paneth cells, stored as an 81-residue precursor peptide named proHD6 in granules, and released into the lumen. One unusual feature of HD6 is that it lacks the broad-spectrum antimicrobial activity observed for other human α-defensins, including the Paneth cell peptide human α-defensin 5 (HD5). HD6 exhibits unprecedented self-assembly properties, which confer an unusual host-defense function...
March 15, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28295690/azole-resistance-in-candida-albicans-from-animals-highlights-on-efflux-pump-activity-and-gene-overexpression
#19
Marcos Fábio Gadelha Rocha, Silviane Praciano Bandeira, Lucas Pereira de Alencar, Luciana Magalhães Melo, Jamille Alencar Sales, Manoel de Araújo Neto Paiva, Carlos Eduardo Cordeiro Teixeira, Débora de Souza Collares Maia Castelo-Branco, Waldemiro de Aquino Pereira-Neto, Rossana de Aguiar Cordeiro, José Júlio Costa Sidrim, Raimunda Sâmia Nogueira Brilhante
This study investigated potential mechanisms of azole resistance among Candida albicans from animals, including efflux pump activity, ergosterol content and gene expression. For this purpose, 30 azole-resistant C. albicans strains from animals were tested for their antifungal susceptibility, according to document M27-A3, efflux pump activity by rhodamine 6G test, ergosterol content and expression of the genes CDR1, CDR2, MDR1, ERG11 by RT-qPCR. These strains were resistant to at least one azole derivative...
March 10, 2017: Mycoses
https://www.readbyqxmd.com/read/28295299/oral-findings-and-dental-behaviour-before-and-after-liver-transplantation-a-single-centre-cross-sectional-study
#20
Anne Kauffels, Gerhard Schmalz, Otto Kollmar, Jan E Slotta, Michael Weig, Uwe Groß, Oliver Bader, Dirk Ziebolz
OBJECTIVE: The aim of this single-centre, cross-sectional study was to evaluate dental, periodontal and mycological findings, as well as oral behaviour, in patients before (pre-LTx) and after (post-LTx) liver transplantation. METHODS: A total of 47 patients pre-LTx and 119 patients post-LTx were asked to participate. Oral health behaviour was assessed using a standardised questionnaire. Oral examinations included dental [decayed, missing and filled teeth (DMFT) index] and periodontal [papillary bleeding index (PBI), periodontal probing depth (PPD) and clinical attachment loss (CAL)] findings...
March 10, 2017: International Dental Journal
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