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Candida albican

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https://www.readbyqxmd.com/read/28528250/antifungal-toxicity-of-linear-geranylphenol-influence-of-oxigenate-substituents
#1
Lautaro Taborga, Maximiliano Sortino, Carrasco Héctor, Estefanía Butassi, Susana Zacchino, Luis Espinoza
Twenty four linear geranylphenols were evaluated for their antifungal properties against ATCC and clinical isolates of Candida albicans and Cryptococcus neoformans. For the analysis of their antifungal behavior the compounds were grouped into two series: (i) compounds with only one geranyl substituent on the benzene ring and (ii) compounds with two geranyl moieties on the benzene ring. Results showed that compounds of series (i) present better antifungal activities than those of series (ii). In addition, within group (i) all compounds showed better activities against C...
May 17, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28527284/-new-multiplex-pcr-for-species-specific-diagnosis-of-human-candidiasis
#2
Liliana Torcoroma García, Liany Johanna Luna, Tania Katherine Velasco, Beatriz Elena Guerra
INTRODUCTION: Candidiases is a group of opportunistic infections caused by yeasts belonging to the genus Candida. Candida albicans is the most prevalent species in both superficial and deep infections, however, the clinical importance of non-albicans Candida has increased during the last decade, driving an urgent need for diagnostic tests that allow for species-level resolution and selection of the optimum therapeutic approach. OBJECTIVE: To design and to optimize a new multiplex PCR assay for the simultaneous identification of the five most relevant species of Candida involved in human candidiasis etiology...
June 1, 2017: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/28527136/factors-influencing-non-albicans-candidemia-a-case-case-control-study
#3
Diamantis P Kofteridis, Antonis Valachis, Dimitra Dimopoulou, Angeliki M Andrianaki, Athanasia Christidou, Sofia Maraki, Nikolaos A Spernovasilis, George Samonis
The study identified factors predisposing to non-albicans candidemia with special interest to prior antimicrobial treatment. A retrospective, case-case-control study was performed at the University Hospital of Heraklion, Greece, from November 2007 through September 2011 including adult patients. The study had three groups. The first included 58 patients with non-albicans candidemia, the second 48 with C. albicans candidemia, while the third (control) 104 without candidemia. Each of the two candidemia groups was compared with the control using multivariate logistic regression model...
May 19, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28526638/prevalence-and-antimicrobial-susceptibility-of-salmonella-and-shigella-spp-among-children-with-gastroenteritis-in-an-iranian-referral-hospital
#4
Shima Mahmoudi, Babak Pourakbari, Mina Moradzadeh, Hamid Eshaghi, Amitis Ramezani, Mohammad Taghi Haghi Ashtiani, Sepideh Keshavarz Valian, Setareh Mamishi
BACKGROUND: Gastroenteritis is one of the leading cause of illnesses through the world, especially in developing countries.Salmonella and Shigella infections are considered as the main public health problems in children. The aim of this study was to detect the prevalence and antimicrobial susceptibility of Salmonella and Shigella spp. among children with gastroenteritis in an Iranian referral hospital. METHODS: During April 2013 to April 2014, all medical records of children with gastroenteritis admitted to a pediatric medical center were evaluated...
May 16, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28526091/a-pre-therapeutic-coating-for-medical-devices-that-prevents-the-attachment-of-candida-albicans
#5
Diego Vargas-Blanco, Aung Lynn, Jonah Rosch, Rony Noreldin, Anthony Salerni, Christopher Lambert, Reeta P Rao
BACKGROUND: Hospital acquired fungal infections are defined as "never events"-medical errors that should never have happened. Systemic Candida albicans infections results in 30-50% mortality rates. Typically, adhesion to abiotic medical devices and implants initiates such infections. Efficient adhesion initiates formation of aggressive biofilms that are difficult to treat. Therefore, inhibitors of adhesion are important for drug development and likely to have a broad spectrum efficacy against many fungal pathogens...
May 19, 2017: Annals of Clinical Microbiology and Antimicrobials
https://www.readbyqxmd.com/read/28524381/antifungal-activity-of-gallic-acid-in-vitro-and-in-vivo
#6
Zhi-Jian Li, Meng Liu, Gulina Dawuti, Qin Dou, Yu Ma, Heng-Ge Liu, Silafu Aibai
Gallic acid (GA) is a polyphenol natural compound found in many medicinal plant species, including pomegranate rind (Punica granatum L.), and has been shown to have antiinflammatory and antibacterial properties. Pomegranate rind is used to treat bacterial and fungal pathogens in Uyghur and other systems of traditional medicine, but, surprisingly, the effects of GA on antifungal activity have not yet been reported. In this study, we aimed to investigate the inhibitory effects of GA on fungal strains both in vitro and in vivo...
May 19, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28523422/usefulness-of-the-non-conventional-caenorhabditis-elegans-model-to-assess-candida-virulence
#7
Marcelo Ortega-Riveros, Iker De-la-Pinta, Cristina Marcos-Arias, Guillermo Ezpeleta, Guillermo Quindós, Elena Eraso
Invasive candidiasis is caused mainly by Candida albicans, but other Candida species have increasing etiologies. These species show different virulence and susceptibility levels to antifungal drugs. The aims of this study were to evaluate the usefulness of the non-conventional model Caenorhabditis elegans to assess the in vivo virulence of seven different Candida species and to compare the virulence in vivo with the in vitro production of proteinases and phospholipases, hemolytic activity and biofilm development capacity...
May 18, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28522446/non-contact-electromagnetic-induction-heating-for-eradicating-bacteria-and-yeasts-on-biomaterials-and-possible-relevance-to-orthopaedic-implant-infections-in-vitro-findings
#8
B G Pijls, I M J G Sanders, E J Kuijper, R G H H Nelissen
OBJECTIVES: Infection of implants is a major problem in elective and trauma surgery. Heating is an effective way to reduce the bacterial load in food preparation, and studies on hyperthermia treatment for cancer have shown that it is possible to heat metal objects with pulsed electromagnetic fields selectively (PEMF), also known as induction heating. We therefore set out to answer the following research question: is non-contact induction heating of metallic implants effective in reducing bacterial load in vitro? METHODS: Titanium alloy cylinders (Ti6Al4V) were exposed to PEMF from an induction heater with maximum 2000 watts at 27 kHz after being contaminated with five different types of micro-organisms: Staphylococcus epidermidis; Staphylococcus aureus; Pseudomonas aeruginosa; spore-forming Bacillus cereus; and yeast Candida albicans...
May 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28516956/selective-bet-bromodomain-inhibition-as-an-antifungal-therapeutic-strategy
#9
Flore Mietton, Elena Ferri, Morgane Champleboux, Ninon Zala, Danièle Maubon, Yingsheng Zhou, Mike Harbut, Didier Spittler, Cécile Garnaud, Marie Courçon, Murielle Chauvel, Christophe d'Enfert, Boris A Kashemirov, Mitchell Hull, Muriel Cornet, Charles E McKenna, Jérôme Govin, Carlo Petosa
Invasive fungal infections cause significant morbidity and mortality among immunocompromised individuals, posing an urgent need for new antifungal therapeutic strategies. Here we investigate a chromatin-interacting module, the bromodomain (BD) from the BET family of proteins, as a potential antifungal target in Candida albicans, a major human fungal pathogen. We show that the BET protein Bdf1 is essential in C. albicans and that mutations inactivating its two BDs result in a loss of viability in vitro and decreased virulence in mice...
May 18, 2017: Nature Communications
https://www.readbyqxmd.com/read/28516267/methods-of-candida-dubliniensis-identification-and-its-occurrence-in-human-clinical-material
#10
Martina Mahelová, Filip Růžička
Candida dubliniensis was reported as a new species in 1995. This species is often misidentified as Candida albicans. The aims of this work were to determine the occurrence of C. dubliniensis in various clinical materials, to evaluate several ways to identify it and to examine the genetic variability of isolates. Among 7706 isolates originally identified as C. albicans, 237 were identified as C. dubliniensis (3.1%). Most of the C. dubliniensis isolates were obtained from the upper and lower respiratory tract (61...
May 17, 2017: Folia Microbiologica
https://www.readbyqxmd.com/read/28516088/the-candida-albicans-biofilm-matrix-composition-structure-and-function
#11
Christopher G Pierce, Taissa Vila, Jesus A Romo, Daniel Montelongo-Jauregui, Gina Wall, Anand Ramasubramanian, Jose L Lopez-Ribot
A majority of infections caused by Candida albicans-the most frequent fungal pathogen-are associated with biofilm formation. A salient feature of C. albicans biofilms is the presence of the biofilm matrix. This matrix is composed of exopolymeric materials secreted by sessile cells within the biofilm, in which all classes of macromolecules are represented, and provides protection against environmental challenges. In this review, we summarize the knowledge accumulated during the last two decades on the composition, structure, and function of the C...
March 2017: Journal of Fungi (Basel, Switzerland)
https://www.readbyqxmd.com/read/28515716/antifungal-activity-of-the-biphosphinic-cyclopalladate-c7a-against-candida-albicans-yeast-forms-in-vitro-and-in-vivo
#12
Julian E Muñoz, Diego C P Rossi, Kelly Ishida, Cristina C Spadari, Marcia S C Melhem, Daniel M Garcia, Antonio C F Caires, Carlos P Taborda, Elaine G Rodrigues
Vulvovaginal and invasive candidiasis are frequent conditions in immunosuppressed individuals caused by Candida albicans and non-albicans Candida spp. Fluconazole and Amphotericin B are the main drugs used to fight the infection. However, resistance to fluconazole and other azole antifungal drugs is an important clinical problem that encourages the search for new therapeutic alternatives. In this work, we evaluate the antifungal activity of the biphosphinic cyclopalladate C7a in the in vitro and in vivo model...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28514949/membrane-of-candida-albicans-as-a-target-of-berberine
#13
Nataša Zorić, Ivan Kosalec, Siniša Tomić, Ivan Bobnjarić, Mario Jug, Toni Vlainić, Josipa Vlainić
BACKGROUND: We investigated the mechanisms of anti-Candida action of isoquinoline alkaloid berberine, active constituent of medically important plants of Barberry species. METHODS: The effects on membrane, morphological transition, synthesis of ergosterol and the consequent changes in membrane permeability have been studied. Polarization and lipid peroxidation level of the membrane following berberine treatment have been addressed. RESULTS: Minimal inhibitory concentration (MIC) of berberine against C...
May 17, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28513771/species-distribution-and-antifungal-susceptibility-patterns-of-candida-isolates-from-a-public-tertiary-teaching-hospital-in-the-eastern-cape-province-south-africa
#14
P Mnge, B I Okeleye, S D Vasaikar, T Apalata
Candida species are the leading cause of invasive fungal infections, and over the past decade there has been an increased isolation of drug resistant Candida species. This study aimed to identify the species distribution of Candida isolates and to determine their unique antifungal susceptibility and resistance patterns. During a cross-sectional study, 209 Candida isolates (recovered from 206 clinical samples) were collected and their species distribution was determined using ChromAgar Candida. The Vitek-2 system (Biomerieux, South Africa) was used to determine minimum inhibitory concentrations (MICs) to azoles (fluconazole, voriconazole), echinocandins (caspofungin, micafungin), polyenes (amphotericin B) and flucytosine...
May 15, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28513096/is-the-oral-fungal-pathogen-candida-albicans-a-cariogen
#15
REVIEW
Daniel Freitas Alves Pereira, Chaminda Jayampath Seneviratne, Cristiane Yumi Koga-Ito, Lakshman Perera Samaranayake
Pathobiology of dental caries is complex. Data from recent molecular microbiologic studies have further redefined the role of the oral microbiome in the etiology of dental caries. This new information challenges the conventional view on the hegemony of classic cariogenic prokaryotes such as Streptococcus mutans in caries aetiology, and raises the intriguing possibility of the participation of the eukaryotic oral fungal pathogen Candida in the caries process. The virulence attributes of Candida species such as their acidogenicity and aciduric nature, the ability to develop profuse biofilms, ferment and assimilate dietary sugars, and produce collagenolytic proteinases are all indicative of their latent cariogenic potential...
May 17, 2017: Oral Diseases
https://www.readbyqxmd.com/read/28512683/messenger-rna-transport-in-the-opportunistic-fungal-pathogen-candida-albicans
#16
REVIEW
Anne E McBride
Candida albicans, a common commensal fungus, can cause disease in immunocompromised hosts ranging from mild mucosal infections to severe bloodstream infections with high mortality rates. The ability of C. albicans cells to switch between a budding yeast form and an elongated hyphal form is linked to pathogenicity in animal models. Hyphal-specific proteins such as cell-surface adhesins and secreted hydrolases facilitate tissue invasion and host cell damage, but the specific mechanisms leading to asymmetric protein localization in hyphae remain poorly understood...
May 16, 2017: Current Genetics
https://www.readbyqxmd.com/read/28512289/a-genetic-screen-in-combination-with-biochemical-analysis-in-saccharomyces-cerevisiae-indicates-that-phenazine-1-carboxylic-acid-is-harmful-to-vesicular-trafficking-and-autophagy
#17
Xiaolong Zhu, Yan Zeng, Xiu Zhao, Shenshen Zou, Ya-Wen He, Yongheng Liang
The environmentally friendly antibiotic phenazine-1-carboxylic acid (PCA) protects plants, mammals and humans effectively against various fungal pathogens. However, the mechanism by which PCA inhibits or kills fungal pathogens is not fully understood. We analyzed the effects of PCA on the growth of two fungal model organisms, Saccharomyces cerevisiae and Candida albicans, and found that PCA inhibited yeast growth in a dose-dependent manner which was inversely dependent on pH. In contrast, the commonly used antibiotic hygromycin B acted in a dose-dependent manner as pH increased...
May 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28512279/antimicrobial-potential-of-plant-extracts-and-chemical-fractions-of-sideroxylon-obtusifolium-roem-schult-t-d-penn-on-oral-microorganisms
#18
Thaíse Pd Sampaio, Nathália Ao Cartaxo-Furtado, Ana Cd de Medeiros, Harley S Alves, Pedro L Rosalen, Jozinete V Pereira
AIM: The aim of this study is to evaluate the in vitro antimicrobial activity of plant extracts and chemical fractions of Sideroxylon obtusifolium T.D. Penn on Streptococcus mutans, Streptococcus oralis, Streptococcus salivarius, Streptococcus parasanguinis, and Candida albicans as well as to identify the chemical classes found in the bioactive extracts possessing better activity. MATERIALS AND METHODS: Freeze-dried hydroalcoholic extracts of the bark and leaves (LC and LF respectively) and ethanol extracts of bark and leaves (EC and EF respectively) of S...
May 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28511604/duplicated-or-hybridized-peptide-functional-domains-promote-oral-homeostasis
#19
T Basiri, N D Johnson, E B Moffa, Y Mulyar, P L Serra Nunes, M A A M Machado, W L Siqueira
Proteins that have existed for millions of years frequently contain repeats of functional domains within their primary structure, thereby improving their functional capacity. In the evolutionary young statherin protein contained within the in vivo-acquired enamel pellicle (AEP), we identified a single functional domain (DR9) located within the protein N-terminal portion that exhibits a higher affinity for hydroxyapatite and more efficient protection against enamel demineralization compared to other native statherin peptides...
May 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28511380/fungal-profile-of-vulvovaginal-candidiasis-in-a-tertiary-care-hospital
#20
Krishnapriya Kalaiarasan, Rakesh Singh, Latha Chaturvedula
INTRODUCTION: Vulvovaginal Candidiasis (VVC) is a common medical health problem of adult women. It is most commonly caused by Candida albicans. But there is a change in fungal profile. Sabouraud's Dextrose Agar (SDA) is the most common culture medium used where mixed fungal infection may be missed. It can be detected easily by using chromogenic culture medium. AIM: To know the fungal profile of vulvovaginal candidiasis using Candida CHROMagar and antifungal susceptibility pattern in patients attending tertiary care hospital...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
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