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https://www.readbyqxmd.com/read/28822858/comparison-of-genome-engineering-using-the-crispr-cas9-system-in-c-glabrata-wild-type-and-lig4-strains
#1
Yuke Cen, Bea Timmermans, Ben Souffriau, Johan M Thevelein, Patrick Van Dijck
Candida glabrata is reported as the second most prevalent human opportunistic fungal pathogen in North America and is threatening patients all over the world. Its incidence is rising, while it has developed resistance to the most widely used antifungal drugs, necessitating new approaches based on better insight into the biology of the organism. Despite its close phylogenetic relationship with Saccharomyces cerevisiae, generating precise genomic alterations in this species is problematic. Previously we have shown that deletion of LIG4, which encodes an enzyme involved in Non-Homologous End Joining (NHEJ), strongly enhances the probability of obtaining correctly modified transformants...
August 16, 2017: Fungal Genetics and Biology: FG & B
https://www.readbyqxmd.com/read/28822705/anti-dermatophyte-activity-of-leguminosae-plants-from-southern-brazil-with-emphasis-on-mimosa-pigra-leguminosae
#2
C B de Morais, M Scopel, G P R Pedrazza, F K da Silva, D F Dalla Lana, M L Tonello, S T S Miotto, M M Machado, L F S De Oliveira, A M Fuentefria, J A S Zuanazzi
BACKGROUND: Intensive prophylactic use of antifungals leads to the increase of drug resistance and the need for new and more effective treatments are real. Plants from Leguminosae family are rich in flavonoids, for which numerous biological activities have been described, including antifungal effects. PURPOSE: To screen methanolic extracts from Leguminosae species looking for alternative sources for antifungal agents (anti-dermatophyte and anti-Candida) and their innocuity...
August 16, 2017: Journal de Mycologie Médicale
https://www.readbyqxmd.com/read/28821821/the-inhibitory-mechanism-of-hal3-on-the-yeast-ppz1-phosphatase-a-mutagenesis-analysis
#3
Cristina Molero, Carlos Casado, Joaquín Ariño
The Ser/Thr protein phosphatase (PPase) Ppz1 is an enzyme related to the ubiquitous type-1 PPases (PP1c) but found only in fungi. It is regulated by an inhibitory subunit, Hal3, which binds to its catalytic domain. Overexpression of Ppz1 is highly toxic for yeast cells, so its de-regulation has been proposed as a target for novel antifungal therapies. While modulation of PP1c by its many regulatory subunits has been extensively characterized, the manner by which Hal3 controls Ppz1 remains unknown. We have used error-prone PCR mutagenesis to construct a library of Ppz1 variants and developed a functional assay to identify mutations affecting the binding or/and the inhibitory capacity of Hal3...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28821607/two-plant-derived-aporphinoid-alkaloids-exert-their-antifungal-activity-by-disrupting-mitochondrial-iron-sulfur-cluster-biosynthesis
#4
Siddharth K Tripathi, Tao Xu, Qin Feng, Bharathi Avula, Xiaomin Shi, Xuewen Pan, Melanie M Mask, Scott R Baerson, Melissa R Jacob, Ranga Rao Ravu, Shabana I Khan, Xing-Cong Li, Ikhlas A Khan, Alice M Clark, Ameeta K Agarwal
Eupolauridine and liriodenine are plant-derived aporphinoid alkaloids that exhibit potent inhibitory activity against the opportunistic fungal pathogens Candida albicans and Cryptococcus neoformans However, the molecular mechanism of this antifungal activity is unknown. In this study, we show that eupolauridine 9591 (E9591), a synthetic analog of eupolauridine, and liriodenine methiodide (LMT), a methiodide salt of liriodenine, mediate their antifungal activities by disrupting mitochondrial iron-sulfur (Fe-S) cluster synthesis...
August 18, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28821035/barley-and-yeast-%C3%AE-glucans-as-new-emulsifier-agents-for-the-development-of-aqueous-natural-antifungal-formulations
#5
Marta Salgado, Soraya Rodríguez-Rojo, María José Cocero
Barley and yeast β-glucans were selected, together with lecithin, to encapsulate resveratrol by emulsification-evaporation method to develop new and safer antifungal formulations. Different emulsification techniques were used: high-shear, high pressure and high pressure and temperature emulsification. Morphology, crystallinity, encapsulation efficiency and in vitro antifungal activity against Botrytis cinerea of the different formulations were evaluated. No significant differences between each emulsification procedure in particle size (below 90nm) and in encapsulation efficiency (70-100%) were observed; only barley β-glucan emulsions showed lower efficiency due to the formation of a gel that retained most of the active compound...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28820552/-1%C3%A2-3-%C3%AE-d-glucan-assay-in-monitoring-response-to-anti-fungal-therapy-in-fungal-endocarditis
#6
Jihad Slim, Christopher Saling, Maria Szabela, Melinda Brown, Tamara Johnson, Irvin Goldfarb
BACKGROUND: A case is reported of Candida glabrata infective endocarditis (IE) treated without surgical intervention. The study aim was to: (i) briefly discuss the outcomes of other documented cases of fungal IE managed medically with fluconazole; (ii) discuss the (1→3)-β-D-glucan assay and its previously studied role in the diagnosis of invasive fungal infections; and (iii) examine a possible application of the (1→3)-β-D-glucan assay to monitor response to antifungal treatment in patients with Candida endocarditis...
March 2017: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/28820051/bisthiourea-derivatives-of-dipeptide-conjugated-benzo-d-isoxazole-as-a-new-class-of-therapeutics-synthesis-and-molecular-docking-studies
#7
H K Kumara, D M Suyoga Vardhan, J Shiva Kumar, D Channe Gowda
We have synthesized a series of bisthiourea derivatives of dipeptides (Lys/lys-Asp and Lys/lys-Trp) conjugated benzo[d]isoxazole and the structures of synthesized compounds were confirmed by correlating their physical and spectroscopic data with earlier data. The molecules 1-24 were examined for their in vitro anti-inflammatory activity by employing human erythrocyte suspension test and it was found that the IC50 values of 9, 12, 21 and 24 were lower than the IC50 of standard references indomethacin and ibuprofen...
August 16, 2017: Anti-inflammatory & Anti-allergy Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/28819878/aspergillus-bronchitis-in-patients-with-cystic-fibrosis
#8
Claudia Brandt, Jobst Roehmel, Volker Rickerts, Volker Melichar, Nadja Niemann, Carsten Schwarz
Aspergillus fumigatus frequently colonizes the airways of patients with cystic fibrosis (CF) and may cause various severe infections, such as bronchitis. Serological data, sputum dependent markers and longitudinal data of treated cases of Aspergillus bronchitis were evaluated for further description of this infection. This study, which comprises three substudies, aimed to analyze epidemiological data of Aspergillus in CF and the entity of Aspergillus bronchitis. In a first step, data of the German Cystic Fibrosis Registry were used to evaluate the frequency of Aspergillus colonization in patients with CF (n = 2599)...
August 17, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28819786/yeast-caspase-dependent-apoptosis-in-saccharomyces-cerevisiae-by4742-induced-by-antifungal-and-potential-antitumor-agent-clotrimazole
#9
Berna Kavakçıoğlu, Leman Tarhan
Clotrimazole is an antifungal medication commonly used in the treatment of fungal infections. There is also promising research on using clotrimazole against other diseases such as malaria, beriberi, tineapedis and cancer. It was aimed to investigate the apoptotic phenotype in Saccharomyces cerevisiae induced by clotrimazole. The exposure of S. cerevisiae to 10 µM clotrimazole for 3, 6 and 9 h caused to decrease in cell viability by 24.82 ± 0.81, 56.00 ± 1.54 and 77.59 ± 0.53%, respectively. It was shown by Annexin V-PI assay that 110 µM clotrimazole treatment caused to death by 35...
August 17, 2017: Archives of Microbiology
https://www.readbyqxmd.com/read/28818498/antifungal-activity-of-the-essential-oil-obtained-from-cryptocarya-alba-against-infection-in-honey-bees-by-nosema-ceranae
#10
J Bravo, V Carbonell, B Sepúlveda, C Delporte, C E Valdovinos, R Martín-Hernández, M Higes
The honeybee disease nosemosis type C is a serious problem since its causative agent, microsporidium Nosema ceranae, is widespread among adult honey bees. Some of the feasible alternative treatments that are used to control this disease are plant extracts. The aim of the present work was to evaluate the effects of essential oils of Chilean plant species, such as Cryptocarya alba, which is used against N. ceranae, and to identify and quantify the majority active compounds in the EO as well as their potential use for the control of nosemosis...
August 14, 2017: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/28818396/identification-and-susceptibility-testing-of-candida-spp-directly-from-yeast-positive-blood-cultures-with-vitek-2
#11
María Fernanda González-Lara, Pedro Torres-González, Andrea Rangel-Cordero, José Sifuentes-Osornio, Alfredo Ponce-de-León, Areli Martínez-Gamboa
Culture-based identification and antifungal susceptibility take 48-72hours after positivity. We analyzed the performance of Vitek2 directly from 40 yeast-positive blood-cultures; agreement of 100% was observed for the tested antifungals; identification showed the same species in 31/40. The method reduces time (13 to 18h) for preliminary results.
July 14, 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/28818264/the-potential-management-of-oral-candidiasis-using-anti-biofilm-therapies
#12
Warren Chanda, Thomson P Joseph, Wendong Wang, Arshad A Padhiar, Mintao Zhong
Candida albicans is a minor component of the oral microbiota and an opportunistic pathogen that takes advantage of the immunocompromised host and causes oral mucositis and oral candidiasis. This organism is able to undergo phenotypic modification from a yeast to hyphae growth phase, one of the key arsenals for immune cell evasion, tissue invasion and biofilm formation. The latter property coupled with overgrowth and immune compromising factors such as HIV/AIDS, cancer treatments, organ transplantation, diabetes, corticosteroid use, dentures, and broad-spectrum antibiotic use have modified the fungus from a normal component of the microflora to a foe of an oral cavity and resulting in reduced sensitivity towards commonly utilised antifungal agents...
September 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28817940/-confirming-the-utility-of-raisus-antifungal-susceptibility-testing-by-new-software
#13
Tomoko Ono, Hiroyuki Suematsu, Haruki Sawamura, Yuka Yamagishi, Hiroshige Mikamo
Clinical and Laboratory Standards Institute (CLSI) methods for susceptibility tests of yeast are used in Japan. On the other hand, the methods have some disadvantage; 1) reading at 24 and 48 h, 2) using unclear scale, approximately 50% inhibition, to determine MICs, 3) calculating trailing growth and paradoxical effects. These makes it difficult to test the susuceptibility for yeasts. Old software of RAISUS, Ver. 6.0 series, resolved problem 1) and 2) but did not resolve problem 3). Recently, new software of RAISUS, Ver...
August 15, 2017: JARMAM: Journal of the Association for Rapid Method and Automation in Microbiology
https://www.readbyqxmd.com/read/28816795/voriconazole-antifungal-prophylaxis-in-children-with-malignancies-a-nationwide-study
#14
Zoi Dorothea Pana, Maria Kourti, Katerina Vikelouda, Antonia Vlahou, Nikolaos Katzilakis, Maria Papageorgiou, Dimitrios Doganis, Loizos Petrikkos, Anna Paisiou, Dimitrios Koliouskas, Antonios Kattamis, Eftichia Stiakaki, Maria Chatzistilianou, Helen Vasilatou-Kosmidis, Sophia Polychronopoulou, Stelios Grafakos, Emmanuel Roilides
BACKGROUND: Antifungal prophylaxis (AFP) is recommended in at-risk hematology-oncology patients. We evaluated the safety of AFP with voriconazole (VRC) in pediatric hematology/oncology patients. MATERIALS AND METHODS: A retrospective study of VRC AFP in children with malignancies hospitalized in all 7 Greek pediatric hematology/oncology centers during 2008 to 2012 was conducted. Patients' demographics, outcome, and adverse event (AE) data were recorded. RESULTS: Four hundred twenty-nine VRC AFP courses in 249 patients (median age 6 y, 55% boys) were studied...
August 14, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28816320/formation-of-titanium-dioxide-core-shell-microcapsules-through-a-binary-phase-spray-technique
#15
Jonatan Bergek, Björn Elgh, Anders E C Palmqvist, Lars Nordstierna
Core-shell microcapsules consisting of a titanium dioxide shell and a hydrophobic solvent core have been prepared with diameters of a few micrometers and a narrow size distribution using a simple and fast airbrush technique. These microcapsules were prepared at room temperature in a single-step process in which an oil with a dissolved titanium alkoxide precursor was forced together with an aqueous solution, containing a surface-active polymer, through a narrow spray nozzle using a nitrogen gas propellant. Several different parameters of chemical, physical, and processing origin were investigated to find an optimal recipe...
August 17, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28815806/evaluation-in-zebrafish-model-of-the-toxicity-of-rhodamine-b-conjugated-crotamine-a-peptide-potentially-useful-for-diagnostics-and-therapeutics
#16
Judy Yuet-Wa Chan, Hefeng Zhou, Yiu Wa Kwan, Shun Wan Chan, Gandhi Radis-Baptista, Simon Ming-Yuen Lee
Crotamine is defensin-like cationic peptide from rattlesnake venom that possesses anticancer, antimicrobial, and antifungal properties. Despite these promising biological activities, toxicity is a major concern associated with the development of venom-derived peptides as therapeutic agents. In the present study, we used zebrafish as a system model to evaluate the toxicity of rhodamine B-conjugated (RhoB) crotamine derivative. The lethal toxic concentration of RhoB-crotamine was as low as 4 μM, which effectively kill zebrafish larvae in less than 10 min...
August 16, 2017: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/28815430/clinical-evaluation-of-the-antifungal-effect-of-sertraline-in-the-treatment-of-cryptococcal-meningitis-in-hiv-patients-a-single-mexican-center-experience
#17
Hiram Villanueva-Lozano, Rogelio de J Treviño-Rangel, Gloria M González, Pedro A Hernández-Rodríguez, Adrián Camacho-Ortiz, Luis Castillo-Reyna, Sandra G Galindo-Alvarado, Michel F Martínez-Reséndez
PURPOSE: Cryptococcal meningitis is a potentially fatal fungal infection associated with a significant attributable morbidity and mortality, especially among HIV/AIDS patients. The first-line therapy for the treatment of this clinical entity is the combinatory therapy of amphotericin B plus flucytosine. However, the high cost, toxic effects, and limited repertoire of effective antifungal drugs have led to the investigation of novel molecules. This is a prospective, double-blinded, and randomized study performed in a Mexican tertiary care center to evaluate the antifungal activity of sertraline in the treatment of cryptococcal meningitis in HIV patients...
August 16, 2017: Infection
https://www.readbyqxmd.com/read/28815305/predictors-of-early-mortality-after-rabbit-antithymocyte-globulin-as-first-line-treatment-in-severe-aplastic-anemia
#18
Elias H Atta, Carlos B L Lima, Danielle S P Dias, Diego V Clé, Mariana M Bonduel, Gabriela B Sciuccati, Larissa A Medeiros, Michel M Oliveira, Marco A Salvino, Marlene P Garanito, Patricia B Blum Fonseca, Sara Teresinha O Saad, Rodrigo T Calado, Phillip Scheinberg
Despite being recommended as first-line immunosuppressive therapy in severe aplastic anemia (SAA), horse antithymocyte globulin (ATG) is still unavailable in many countries outside the USA. Rabbit ATG is more lymphocytoxic than horse ATG, and this might result in a higher incidence of severe infections and early mortality. This study was designed to identify the risk factors for early mortality and overall survival (OS) after rabbit ATG in patients with SAA. We retrospectively reviewed 185 patients with SAA who underwent rabbit ATG and cyclosporine...
August 16, 2017: Annals of Hematology
https://www.readbyqxmd.com/read/28814908/pulmonary-cryptococcosis-presenting-with-lung-mass-report-of-7-cases-and-review-of-literature
#19
Kanet Kanjanapradit, Zdravko Kosjerina, Wiwatana Tanomkiat, Warangkana Keeratichananont, Siripen Panthuwong
Pulmonary cryptococcosis is commonly found in immunocompromised patients. This microorganism rarely infects immunocompetent individuals, and when it does, it causes mild symptoms. The radiological findings of this disease may involve an intrapulmonary mass that mimics lung tumor. The objective of this study was to review the clinicopathological information, radiological findings, and treatment of patients who presented with intrapulmonary mass due to cryptococcosis. This study collected data from 7 patients who were treated at Songklanagarind Hospital, Songkhla, Thailand, between 2009 and 2014...
2017: Clinical Medicine Insights. Pathology
https://www.readbyqxmd.com/read/28814889/fluconazole-resistance-in-candida-species-a-current-perspective
#20
REVIEW
Elizabeth L Berkow, Shawn R Lockhart
Candida albicans and the emerging non-albicans Candida spp. have significant clinical relevance among many patient populations. Current treatment guidelines include fluconazole as a primary therapeutic option for the treatment of these infections, but it is only fungistatic against Candida spp. and both inherent and acquired resistance to fluconazole have been reported. Such mechanisms of resistance include increased drug efflux, alteration or increase in the drug target, and development of compensatory pathways for producing the target sterol, ergosterol...
2017: Infection and Drug Resistance
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