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Candida albican

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https://www.readbyqxmd.com/read/29456868/-cinnamomum-zeylanicum-bark-essential-oil-induces-cell-wall-remodelling-and-spindle-defects-in-candida-albicans
#1
Zinnat Shahina, Amira M El-Ganiny, Jessica Minion, Malcolm Whiteway, Taranum Sultana, Tanya E S Dahms
Background: Cinnamon ( Cinnamomum zeylanicum) bark extract exhibits potent inhibitory activity against Candida albicans but the antifungal mechanisms of this essential oil remain largely unexplored. Results: We analyzed the impact of cinnamon bark oil on C. albicans RSY150, and clinical strains isolated from patients with candidemia and candidiasis. The viability of RSY150 was significantly compromised in a dose dependent manner when exposed to cinnamon bark oil, with extensive cell surface remodelling at sub inhibitory levels (62...
2018: Fungal Biology and Biotechnology
https://www.readbyqxmd.com/read/29454824/candida-albicans-biology-molecular-characterization-pathogenicity-and-advances-in-diagnosis-and-control-an-update
#2
REVIEW
Maryam Dadar, Ruchi Tiwari, Kumaragurubaran Karthik, Sandip Chakraborty, Youcef Shahali, Kuldeep Dhama
Candida albicans is an emerging multidrug-resistant fungal pathogen representing an important source of invasive disease in humans and generating high healthcare costs worldwide. This fungus is frequently found in different anatomical sites of healthy persons and could induce systemic and superficial infections under optimal environmental conditions. Invasive candidiasis (IC) is an important nosocomial infection with high morbidity and mortality rates in hospitalized children. It represents a major source of prolonged infections in intensive care unit (ICU), particularly in immunosuppressed or elderly patients...
February 15, 2018: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29454005/a-quest-to-find-good-primers-for-gene-expression-analysis-of-candida-albicans-from-clinical-samples
#3
Gabriela C Alonso, Ana C Pavarina, Tábata V Sousa, Marlise I Klein
Biofilm production contributes to several human diseases, including oral candidiasis. Among the Candida species, Candida albicans is the most prevalent. The expression of virulence genes is implicated in the pathogenic potential of Candida biofilms. However, the evaluation of microbial gene expression from in vivo biofilm samples is not trivial, specifically, assessment via quantitative PCR (qPCR) can be a challenge because of several species present in clinical samples. Hence, the necessity of primers specificity...
February 14, 2018: Journal of Microbiological Methods
https://www.readbyqxmd.com/read/29453849/methionine-is-required-for-camp-pka-mediated-morphogenesis-and-virulence-of-candida-albicans
#4
Sanne Schrevens, Griet Van Zeebroeck, Michael Riedelberger, Hélène Tournu, Karl Kuchler, Patrick Van Dijck
Candida albicans is a major human fungal pathogen, causing superficial, as well as life-threatening invasive infections. Therefore, it has to adequately sense and respond to the host defense by expressing appropriate virulence attributes. The most important virulence factor of C. albicans is the yeast-to-hyphae morphogenetic switch, which can be induced by numerous environmental cues, including the amino acid methionine. Here, we show an essential role for methionine permease Mup1 in methionine-induced morphogenesis, biofilm formation, survival inside macrophages and virulence...
February 17, 2018: Molecular Microbiology
https://www.readbyqxmd.com/read/29452593/a-review-on-biosynthesis-of-silver-nanoparticles-and-their-biocidal-properties
#5
REVIEW
Khwaja Salahuddin Siddiqi, Azamal Husen, Rifaqat A K Rao
Use of silver and silver salts is as old as human civilization but the fabrication of silver nanoparticles (Ag NPs) has only recently been recognized. They have been specifically used in agriculture and medicine as antibacterial, antifungal and antioxidants. It has been demonstrated that Ag NPs arrest the growth and multiplication of many bacteria such as Bacillus cereus, Staphylococcus aureus, Citrobacter koseri, Salmonella typhii, Pseudomonas aeruginosa, Escherichia coli, Klebsiella pneumonia, Vibrio parahaemolyticus and fungus Candida albicans by binding Ag/Ag + with the biomolecules present in the microbial cells...
February 16, 2018: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/29451932/in-vitro-screening-of-the-antibacterial-and-anti-candida-properties-of-crushed-nonantimicrobial-drugs-frequently-prescribed-in-nursing-homes
#6
Julie Lamure, Marlène Chevalier, Pascal Rathelot, Françoise Mignolet, Isabelle Precheur
Frail older adults often experience swallowing disorders, prompting nursing staff to crush tablets, open capsules, and mix drugs into their meals or gelled water. However, crushing drugs can lead to pharmacological and gustatory problems. As crushed drugs can stay in prolonged contact with oral microbial biofilm, the current study aimed to investigate their antimicrobial properties. Crushed drugs were diluted in 1 mL of isotonic water and assayed in vitro for: (a) growth inhibition of five bacterial strains and Candida albicans by the diffusion method; (b) inhibition of Streptococcus salivarius and C...
February 13, 2018: Research in Gerontological Nursing
https://www.readbyqxmd.com/read/29451605/evaluation-of-the-frequency-of-candida-spp-in-hospitalized-and-non-hospitalized-subjects
#7
J N Vieira, A M Feijó, M E Bueno, C L Gonçalves, R G Lund, J F Mendes, J P V Villarreal, M M Villela, P S Nascente
The aim of this study was to evaluate the frequency of Candida species between a non-hospitalized and a hospitalized population. For this purpose, samples of saliva were sampled through sterile swabs, moistened in peptone water and rubbed in the oral cavity of 140 individuals, from which, 70 were hospitalized patients from the Medical Clinic of a Teaching Hospital and the other 70 were non-hospitalized subjects. All saliva samples were plated in Sabouraud Dextrose agar added with Chloramphenicol and incubated at 36 °C for 48 hours...
February 15, 2018: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/29449404/draft-genome-assemblies-of-xylose-utilizing-candida-tropicalis-and-candida-boidinii-with-potential-application-in-biochemical-and-biofuel-production
#8
Abhishek Somani, Daniel Smith, Matthew Hegarty, Narcis Fernandez-Fuentes, Sreenivas R Ravella, Joe A Gallagher, David N Bryant
Non- albicans Candida species are growing in prominence in industrial biotechnology due to their ability to utilize hemicellulose. Here, we present the draft genome sequences of an inhibitor-tolerant Candida tropicalis strain (Y6604) and Candida boidinii NCAIM Y01308 T .
February 15, 2018: Genome Announcements
https://www.readbyqxmd.com/read/29449266/fungal-liver-abscess-in-an-immunocompetent-patient-who-underwent-repeated-ercps-and-subtotal-cholecystectomy
#9
Sundas Hasan, Robert Fearn
We report a case of a previously healthy female patient who initially presented with fever, jaundice and right upper quadrant pain three days after dilatation and stenting of a stricture of the common bile duct (CBD). During an earlier admission, the patient had undergone endoscopic retrograde cholangiopancreatography (ERCP) having presented with fevers and biliary dilatation on ultrasound. The ERCP features were more consistent with Mirizzi's Syndrome. The patient subsequently underwent subtotal cholecystectomy and later developed a CBD stricture, requiring repeat ERCP and stent insertion...
February 15, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29448504/antifungal-effect-of-a-dental-tissue-conditioner-containing-nystatin-loaded-alginate-microparticles
#10
Hyun-Jin Kim, Jun Sik Son, Tae-Yub Kwon
In this in vitro study, nystatin-alginate microparticles were successfully fabricated to control the release of nystatin from a commercial dental tissue conditioner. These nystatin-alginate microparticles were spherical and had a slightly rough surface. The microparticles incorporated into the tissue conditioner were distributed homogeneously throughout the tissue conditioner matrix. The incorporation of the microparticles did not deteriorate the mechanical properties of the original material. The agar diffusion test results showed that the tissue conditioner containing the microparticles had a good antifungal effect against Candida albicans...
February 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29446992/anticandidal-activity-of-bioinspired-zno-nps-effect-on-growth-cell-morphology-and-key-virulence-attributes-of-candida-species
#11
Mohammad Jalal, Mohammad Azam Ansari, Syed Ghazanfar Ali, Haris M Khan, Suriya Rehman
The pathogenicity of Candida species in human is dependent on a variety of virulence factor such as adhesion factors, germ tube and hyphal formation, secretion of hydrolytic phospholipases and proteinases and drug resistance biofilm. ZnO NPs have been synthesized by using leaf extract of Crinum latifolium and were characterized by UV-Vis spectrophotometer, FTIR, SEM, EDX and TEM. In this study for the first time, potent inhibitory effects of ZnO NPs on principal virulence factors of Candida albicans and non-albicans such as germ tube formation, secretion of hydrolytic phospholipases and proteinases and biofilm formation has been investigated...
February 15, 2018: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29446984/anticancer-drugs-as-antibiofilm-agents-in-candida-albicans-potential-targets
#12
Archana Anandrao Wakharde, Shivkrupa Devrao Halbandge, Datta Baburao Phule, Sankunny Mohan Karuppayil
The human pathogen Candida albicans can grow as a biofilm on host tissues and on the surfaces of different prosthetic devices in a patient's body. Various studies have reported that biofilms formed by C. albicans are resistant to most of the currently used antibiotics including the widely prescribed drug, fluconazole. As such, novel strategies for the treatment of drug-resistant biofilms are required. Drug repositioning or the use of drugs outside their unique indication has the potential to radically change drug development...
February 15, 2018: Assay and Drug Development Technologies
https://www.readbyqxmd.com/read/29444828/diagnosing-invasive-candidiasis
#13
Cornelius J Clancy, M Hong Nguyen
Cultures are negative in ∼50% of invasive candidiasis. Data are emerging for the performance of non-culture tests like mannan/anti-mannan, Candida albicans germ tube antibody, 1,3-β-D-glucan, polymerase chain reaction, and the T2Candida panel in diagnosing both candidemia and deep-seated candidiasis. In most settings, positive predictive values of non-culture test are low, and negative predictive values are high. For tests to be useful, clinicians must understand the pre-test likelihood of invasive candidiasis and test performance for the most common disease manifestation in a given patient...
February 14, 2018: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/29444673/effect-of-tt-farnesol-and-myricetin-on-in-vitro-biofilm-formed-by-streptococcus-mutans-and-candida-albicans
#14
Guilherme Roncari Rocha, Elkin Jahir Florez Salamanca, Ana Letícia de Barros, Carmélia Isabel Vitorino Lobo, Marlise Inêz Klein
BACKGROUND: Dental caries is considered a multifactorial disease, in which microorganisms play an important role. The diet is decisive in the biofilm formation because it provides the necessary resources for cellular growth and exopolysaccharides synthesis. Exopolysaccharides are the main components of the extracellular matrix (ECM). The ECM provides a 3D structure, support for the microorganisms and form diffusion-limited environments (acidic niches) that cause demineralization of the dental enamel...
February 14, 2018: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/29442016/properties-and-role-of-the-quorum-sensing-molecule-farnesol-in-relation-to-the-yeast-candida-albicans
#15
S Dižová, H Bujdáková
Farnesol is a quorum sensing (QS) molecule synthesized by Candida albicans acting as a negative regulator of morphogenesis; it blocks the yeast-to-hyphae transformation. This molecule is currently studied in particular from the viewpoint of possible use as a substance with anticancer properties and with an antimicrobial, and anti-biofilm effect in yeasts resistant or tolerant to conventional therapeutic agents, for example fluconazole. Besides the aforementioned effect on morphological transformation through cyclic AMP (cAMP)/protein kinase A (cAMP-PKA) pathway, it also affects other biochemical pathways of yeasts, for example those ones for sterol biosynthesis or triggering of apoptosis via accumulation of ROS (reactive oxygen species) that damage essential cellular compartments...
June 1, 2017: Die Pharmazie
https://www.readbyqxmd.com/read/29441824/green-synthesis-of-silver-nanoparticles-combined-to-calcium-glycerophosphate-antimicrobial-and-antibiofilm-activities
#16
José As Souza, Debora B Barbosa, Andresa A Berretta, Jackeline G do Amaral, Luiz F Gorup, Francisco N de Souza Neto, Renan A Fernandes, Gabriela L Fernandes, Emerson R Camargo, Alessandra M Agostinho, Alberto Cb Delbem
AIM: To synthesize, characterize and evaluate the antimicrobial and antibiofilm activities of novel nanocomposites containing silver nanoparticles (AgNPs) associated or not to β-calcium glycerophosphate. MATERIALS & METHODS: These nanocomposites were produced through a 'green' route using extracts of different parts of pomegranate. Antimicrobial and antibiofilm properties against Candida albicans and Streptococcus mutans were determined by the minimum bactericidal/fungicidal concentration and biofilm density after treatments...
February 14, 2018: Future Microbiology
https://www.readbyqxmd.com/read/29439535/bioactivity-assessment-of-indian-origin-mangrove-actinobacteria-against-candida-albicans
#17
J G S Pavan Kumar, Ajitha Gomathi, K M Gothandam, Vitor Vasconcelos
Actinobacteria is found to have a potent metabolic activity against pathogens. The present study reveals the assessment of potent antifungal secondary metabolites from actinobacteria isolated from Indian marine mangrove sediments. The samples were collected from the coastal regions of Muthupet, Andaman and the Nicobar Islands. Identification was carried out using 16S rRNA analysis and biosynthetic genes (Polyketide synthase type I/II and Non-ribosomal peptide synthase) were screened. Actinobacteria were assayed for their antifungal activity against 16 clinical Candida albicans and the compound analysis was performed using gas chromatography-mass spectrometry GC-MS...
February 12, 2018: Marine Drugs
https://www.readbyqxmd.com/read/29438475/detecting-infections-rapidly-and-easily-for-candidemia-trial-part-2-direct2-a-prospective-multicenter-study-of-the-t2candida-panel
#18
Cornelius J Clancy, Peter G Pappas, Jose Vazquez, Marc A Judson, Dimitrios P Kontoyiannis, George R Thompson, Kevin W Garey, Annette Reboli, Richard N Greenberg, Senu Apewokin, G Marshall Lyon, Luis Ostrosky-Zeichner, Alan H B Wu, Ellis Tobin, M Hong Nguyen, Angela M Caliendo
Background: Blood cultures are approximately 50% sensitive for diagnosing invasive candidiasis. The T2Candida nanodiagnostic panel uses T2 magnetic resonance and a dedicated instrument to detect Candida directly within whole blood samples. Methods: Patients with Candida albicans, Candida glabrata, Candida parapsilosis, Candida tropicalis, or Candida krusei candidemia were identified at 14 centers using diagnostic blood cultures (dBCs). Follow-up blood samples were collected concurrently for testing by T2Candida and companion cultures (cBCs)...
February 9, 2018: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29438403/release-of-transcriptional-repression-through-the-hcr-promoter-region-confers-uniform-expression-of-hwp1-on-surfaces-of-candida-albicans-germ-tubes
#19
Samin Kim, Quoc Bao Nguyen, Michael J Wolyniak, Gregory Frechette, Christian R Lehman, Brandon K Fox, Paula Sundstrom
The mechanisms that fungi use to co-regulate subsets of genes specifically associated with morphogenic states represent a basic unsolved problem in fungal biology. Candida albicans is an important model of fungal differentiation both for rapid interconversion between yeast and hyphal growth forms and for white/opaque switching mechanisms. The Sundstrom lab is interested in mechanisms regulating hypha-specific expression of adhesin genes that are critical for C. albicans hyphal growth phenotypes and pathogenicity...
2018: PloS One
https://www.readbyqxmd.com/read/29437525/3-5-disubstituted-thiazolidine-2-4-diones-design-microwave-assisted-synthesis-antifungal-activity-and-admet-screening
#20
Gabriel Marc, Anca Stana, Adrian Pîrnău, Laurian Vlase, Dan C Vodnar, Mihaela Duma, Brînduşa Tiperciuc, Ovidiu Oniga
A series of 12 new thiazolidine-2,4-dione derivatives were obtained by microwave-assisted synthesis. All compounds were physicochemically characterized by quantitative elemental C, H, N, S analysis and spectral data (mass spectrometry [MS], infrared [IR], and nuclear magnetic resonance [NMR]), with the results being in agreement with the expected data. An in vitro screening performed on Candida albicans ATCC 10231 showed their moderate antifungal activity, which was further investigated by determining the minimum inhibitory concentration and minimum fungicidal concentration values for the most active compounds on four strains of Candida...
February 1, 2018: SLAS Discovery
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