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Candida tropicalis

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https://www.readbyqxmd.com/read/29335835/etiology-of-invasive-candidosis-agents-in-russia-a-multicenter-epidemiological-survey
#1
N V Vasilyeva, E R Raush, M V Rudneva, T S Bogomolova, A E Taraskina, Yong Fang, Fengmin Zhang, N N Klimko
A multicenter prospective epidemiological survey on the etiologic agents of invasive candidosis was conducted in Russia in the period of 2012-2014. Samples were collected from 284 patients with invasive candidosis and Candida species isolated by culture. The species were identified by DNA sequencing and MALDI-TOF massspectrometry. A total of 322 isolates were recovered, in which 96% of Сandida species belonged to six major species, namely, C. albicans (43.2%), C. parapsilosis (20.2%), C. glabrata (11.5%), C...
January 16, 2018: Frontiers of Medicine
https://www.readbyqxmd.com/read/29335820/how-much-do-we-know-about-hemolytic-capability-of-pathogenic-candida-species
#2
REVIEW
Márcia C Furlaneto, Helena P Góes, Hugo F Perini, Renan C Dos Santos, Luciana Furlaneto-Maia
Hemolytic factor production by pathogenic Candida species is considered an important attribute in promoting survival within the mammal host through the ability to assimilate iron from the hemoglobin-heme group. Hemolytic capability has been evaluated for Candida species based on hemolysis zones on plate assay, analysis of hemolytic activity in liquid culture medium, and hemolysis from cell-free culture broth. The production of hemolytic factor is variable among Candida species, where C. parapsilosis is the less hemolytic species...
January 15, 2018: Folia Microbiologica
https://www.readbyqxmd.com/read/29335048/antiplaque-antifungal-effectiveness-of-aloevera-among-intellectually-disabled-adolescents-pilot-study
#3
Sachin G Khatri, Srinivasan Raj Samuel, Shashidhar Acharya, Snehal T Patil
PURPOSE: Various candida species have been associated with poor oral hygiene and active carious lesions. The purpose of this study was to evaluate the effectiveness of aloe vera compared to triclosan toothpaste against total candida, C. albicans, C. tropicalis, Candida krusei, and plaque/gingivitis among intellectually disabled adolescents over 30 days. METHODS: A double-blind prospective randomized trial was conducted among 40 intellectually disabled adolescents randomly allocated into aloe vera/triclosan groups...
November 1, 2017: Pediatric Dentistry
https://www.readbyqxmd.com/read/29320469/evaluation-of-the-simultaneous-production-of-xylitol-and-ethanol-from-sisal-fiber
#4
Franklin Damião Xavier, Gustavo Santos Bezerra, Sharline Florentino Melo Santos, Líbia Sousa Conrado Oliveira, Flávio Luiz Honorato Silva, Aleir Joice Oliveira Silva, Marta Maria Conceição
Recent years have seen an increase in the use of lignocellulosic materials in the development of bioproducts. Because sisal fiber is a low cost raw material and is readily available, this work aimed to evaluate its hemicellulose fraction for the simultaneous production of xylitol and ethanol. The sisal fiber presented a higher hemicellulose content than other frequently-employed biomasses, such as sugarcane bagasse. A pretreatment with dilute acid and low temperatures was conducted in order to obtain the hemicellulose fraction...
January 10, 2018: Biomolecules
https://www.readbyqxmd.com/read/29314280/fabrication-of-silver-chloride-nanoparticles-using-a-plant-serine-protease-in-combination-with-photo-activation-and-investigation-of-their-biological-activities
#5
Jaruwan Siritapetawee, Wanwisa Limphirat, Nawarat Nantapong, Dujdow Songthamwat
Recently, the development of 'green' methods for fabrication of silver nanoparticles (Ag-NPs) has been emphasized, in view of their environmental safety, feasibility and low cost. In this study, a serine protease, EuP-82 from Euphorbia cf. lactea latex, was used to fabricate silver chloride nanoparticles (AgCl-NPs) in phosphate-buffered saline (pH 7.2), under the influence of visible light. The fabricated nanoparticles had a maximal surface plasmon resonance absorption peak at 435 nm. The size of the AgCl-NPs, estimated by scanning electron microscopy, was 57 ± 14...
January 3, 2018: Biotechnology and Applied Biochemistry
https://www.readbyqxmd.com/read/29310582/identification-of-uncommon-oral-yeasts-from-cancer-patients-by-maldi-tof-mass-spectrometry
#6
Narges Aslani, Ghasem Janbabaei, Mahdi Abastabar, Jacques F Meis, Mahasti Babaeian, Sadegh Khodavaisy, Teun Boekhout, Hamid Badali
BACKGROUND: Opportunistic infections due to Candida species occur frequently in cancer patients because of their inherent immunosuppression. The aim of the present study was to investigate the epidemiology of yeast species from the oral cavity of patients during treatment for oncological and haematological malignancies. METHODS: MALDI-TOF was performed to identify yeasts isolated from the oral cavity of 350 cancer patients. Moreover, antifungal susceptibility testing was performed in according to CLSI guidelines (M27-A3)...
January 8, 2018: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29302625/quantitation-of-ergosterol-content-and-gene-expression-profile-of-erg11-gene-in-fluconazole-resistant-candida-albicans
#7
F Alizadeh, A Khodavandi, S Zalakian
Background and Purpose: The frequency of opportunistic fungal infections in immunocompromised patients, especially by Candida species, has sharply increased in the last few decades. The objective of this study was to analyse the ergosterol content and gene expression profiling of clinical isolates of fluconazole-resistant Candida albicans. Materials and Methods: Sixty clinical samples were identified and collected from immunocompromised patients, namely recurrent oral, vaginal, and cutaneous candidiasis, during 2015-16...
March 2017: Advances in Medical Mycology (Iran)
https://www.readbyqxmd.com/read/29287632/association-between-candida-biofilm-forming-bloodstream-isolates-and-the-clinical-evolution-in-patients-with-candidemia-an-observational-nine-year-single-center-study-in-mexico
#8
Rogelio de J Treviño-Rangel, Cynthia D Peña-López, Pedro A Hernández-Rodríguez, Dinael Beltrán-Santiago, Gloria M González
BACKGROUND: Candidemia is one of the most common nosocomial infections globally and it is associated with considerable excess mortality and costs. Abreast, biofilm-forming strains are associated with even higher mortality rates and poor prognosis for the patient. AIMS: To evaluate a possible association between the biofilm-forming capability of Candida bloodstream isolates and the clinical evolution in patients with candidemia. METHODS: An observational, retrospective study was conducted at a tertiary care university hospital during 9 years (2006-2015)...
December 26, 2017: Revista Iberoamericana de Micología
https://www.readbyqxmd.com/read/29287631/phenotypical-characterization-and-molecular-identification-of-clinical-isolates-of-candida-tropicalis
#9
Rogelio de J Treviño-Rangel, Byron A Bodden-Mendoza, Alexandra M Montoya, Hiram Villanueva-Lozano, Mariana Elizondo-Zertuche, Efrén Robledo-Leal, Gloria M González
BACKGROUND: Candida tropicalis is an increasingly important human pathogen which usually affects neutropenic oncology patients with common hematogenous seeding to peripheral organs and high mortality rates. Candida pathogenicity is facilitated by several virulence attributes, including secretion of hydrolytic enzymes; however, little is known regarding the C. tropicalis ability to secrete them and their role in the disease. AIMS: To confirm by molecular means the identification of 187 clinical isolates (127 from blood, 52 from urine, and 8 from diverse clinical origins) phenotypically identified as C...
December 26, 2017: Revista Iberoamericana de Micología
https://www.readbyqxmd.com/read/29276111/efficient-detoxification-of-corn-cob-hydrolysate-with-ion-exchange-resins-for-enhanced-xylitol-production-by-candida-tropicalis-mtcc-6192
#10
Vinod Kumar, Meena Krishania, Pankaj Preet Sandhu, Vivek Ahluwalia, Edgard Gnansounou, Rajender S Sangwan
The present study demonstrates utilization of secondary agricultural wastes for xylitol production. The highest xylan-to-xylose (70%) conversion was achieved using dilute nitric acid as catalyst followed by resin treatment. Results show that resin treatment efficiently removed nitrate salt (70%), phenolic content and 5-HMF (70%). Highest xylitol yield (85%) was achieved during fermentation using Candida tropicalis MTCC 6192 from the neutralized hemicellulosic hydrolysate medium. Good recovery (>15%) was achieved from corncob with 85% xylose to xylitol conversion during fermentation...
December 8, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/29274212/drug-susceptibility-of-fungi-isolated-from-icu-patients
#11
Barbara D Modrzewska, Anna J Kurnatowska,, Katarzyna Khalid
Candida species can be a reason of infections associated with high morbidity and mortality. The risk of invasive candidosis for patients admitted to intensive care units (ICUs) is increased due to immunosuppressive states, prolonged length of stay, broad-spectrum antibiotics and Candida colonization. The aim of the study was to determine selected properties of fungi isolated from patients treated in the ICUs of hospitals in Lodz. The materials were collected from the oral cavity, the tracheostomy or endotracheal tube and urine from 16 children and 35 adult...
2017: Annals of Parasitology
https://www.readbyqxmd.com/read/29246167/the-candida-species-that-are-important-for-the-development-of-atrophic-glossitis-in-xerostomia-patients
#12
Sachika Nakamura, Mariko R Okamoto, Ken Yamamoto, Akihisa Tsurumoto, Yoko Yoshino, Hiroshi Iwabuchi, Ichiro Saito, Nobuko Maeda, Yoichi Nakagawa
BACKGROUND: The purpose of this study was to clarify the species of Candida that are important for the development of atrophic glossitis in xerostomia patients. METHODS: A total of 231 patients with subjective dry mouth were enrolled in the present study. Logistic regression analysis was performed to clarify the contribution of each Candida species and other variables to the development of atrophic glossitis. The dependent variable was the absence/presence of atrophic glossitis...
December 16, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/29229505/action-mechanism-of-naphthofuranquinones-against-fluconazole-resistant-candida-tropicalis-strains-evidenced-by-proteomic-analysis-the-role-of-increased-endogenous-ros
#13
João Batista de Andrade Neto, Cecília Rocha da Silva, Rosana de Sousa Campos, Francisca Bruna Stefany Aires do Nascimento, Letícia Serpa Sampaio, Anderson Ramos da Silva, Maria Aparecida Alexandre Josino, Manoel Odorico de Moraes, Marina Duarte Pinto Lobo, Frederico Bruno Mendes Batista Moreno, Ana Cristina de Oliveira Monteiro Moreira, Renato de Azevedo Moreira, Thalles Barbosa Grangeiro, Eufrânio Nunes da Silva Júnior, Hemerson Iuri Ferreira Magalhães, Danilo Damasceno Rocha, Bruno Coêlho Cavalcanti, Hélio Vitoriano Nobre Júnior
The increased incidence of candidemia in terciary hospitals worldwide and the cross-resistance frequency require the new therapeutic strategies development. Recently, our research group demonstrated three semi-synthetic naphthofuranquinones (NFQs) with a significant antifungal activity in a fluconazole-resistant (FLC) C. tropicalis strain. The current study aimed to investigate the action's preliminary mechanisms of NFQs by several standardized methods such as proteomic and flow cytometry analyzes, comet assay, immunohistochemistry and confocal microscopy evaluation...
December 8, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29228797/in-situ-microstructure-and-rheological-behavior-of-yeast-biofilms-from-the-juice-processing-industries
#14
María C Tarifa, Diego Genovese, Jorge E Lozano, Lorena I Brugnoni
The factors affecting the mechanical properties of biofilms formed by yeast species (Rhodotorula mucilaginosa, Candida krusei, C. kefyr and C. tropicalis) isolated from the juice processing industries have been investigated. Variables studied were: the food matrix (apple/pear juice), the sugar concentration (6/12 °Bx) and the hydrodynamic conditions (static/turbulent flow). A range of environmental cues were included as the mechanical properties of biofilms are complex. Yeast counts were significantly higher in turbulent flow compared with under static conditions...
December 12, 2017: Biofouling
https://www.readbyqxmd.com/read/29216940/-study-on-risk-factor-of-central-venous-catheter-infection-in-icu-1-160-patients-report
#15
Ming Zhang, Yongqing Xu, Zhiming Jiang, Junying Qian, Zhonghui Zhang, Nannan Sun, Jian Xie, Tao Li
OBJECTIVE: To analyze the etiology and risk factors of central venous catheter (CVCs) infections, and to explore the prophylaxis and treatment for catheter-related infections. METHODS: A retrospective study was conducted. The patients with CVCs admitted to intensive care unit (ICU) of Qianfoshan Hospital Affiliated to Shandong University from January 2000 to December 2016 were enrolled. The gender, age, catheter data and microorganism culture results of all patients were collected...
December 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/29212442/impact-of-inappropriate-antifungal-therapy-according-to-current-susceptibility-breakpoints-on-candida-bloodstream-infection-mortality-a-retrospective-analysis
#16
María Fernanda González-Lara, Pedro Torres-González, Patricia Cornejo-Juárez, Consuelo Velázquez-Acosta, Areli Martinez-Gamboa, Andrea Rangel-Cordero, Miriam Bobadilla-Del-Valle, Luis Ostrosky-Zeichner, Alfredo Ponce-de-León, José Sifuentes-Osornio
BACKGROUND: The mortality of Candida Bloodstream Infection (CBSI) remains high. Antifungal susceptibility breakpoints were recently updated for Candida species, the impact remains unknown. In this study we evaluated the impact of inappropriate antifungal treatment according to recent breakpoints on 30-day mortality of CBSI. METHODS: From June 2008 to July 2014, data on CBSI episodes from two tertiary-care centers, treated > 72 h were analyzed. Antifungal therapy and 30-day mortality were registered...
December 6, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29210685/continuous-treatment-of-acid-red-b-with-activated-sludge-bioaugmented-by-a-yeast-candida-tropicalis-tl-f1-and-microbial-community-dynamics
#17
Jing Liu, Li Song, Tingting Jiang, Xuan Jia, Liang Tan
Continuous treatment of Acid Red B (ARB) with activated sludge (AS) bioaugmented by an azo-degrading yeast Candida tropicalis TL-F1 under aerobic conditions was investigated in the form of sequencing batch tests. Dynamics of both bacterial and fungal communities were analyzed using polymerase chain reaction followed by denaturing gradient gel electrophoresis (PCR-DGGE) method. The results showed that bioaugmentation with the yeast TL-F1 improved the performance of AS for continuously decolorizing, degrading and detoxifying ARB...
December 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/29209074/in-vitro-and-in-vivo-antifungal-activities-and-mechanism-of-heteropolytungstates-against-candida-species
#18
Han Li, Hongwei Gong, Yanfei Qi, Juan Li, Xufeng Ji, Jiaheng Sun, Rui Tian, Hao Bao, Xiangfu Song, Qiang Chen, Guoliang Liu
The antifungal activities of heteropolytungstates, α-1,2,3-K6H[SiW9V3O40] (SiW-3), K13[Ce(SiW11O39)2]·17H2O (SiW-5), K13[Eu(SiW11O39)2]·25H2O (SiW-10), K6PV3W9O40 (PW-6), α-K4PVW11O40 (PW-8), were screened in 29 Candida albicans, 8 Candida glabrata, 3 Candida krusei, 2 Candida parapsilosis, 1 Candida tropicalis, and 1 Cryptococcus neoformans strains using the CLSI M27-A3 method. SiW-5 had the highest efficacy with a minimum inhibitory concentration (MIC) values of <0.2-10.2 μM in vitro. The antifungal mechanism, acute toxicity and in vivo antifungal activity of SiW-5 were then evaluated in C...
December 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29207704/opportunistic-microorganisms-in-oral-cavity-according-to-treatment-status-in-head-and-neck-cancer-patients
#19
Priyanka Soni, Rajendra Singh Parihar, Laxman Kumar Soni
Introduction: Cancer patients receiving chemotherapy and/or radiation therapy are prone to many predisposing factors like immunosuppression, imbalance in the oral flora, hypo-salivation and local tissue damage. Therefore, considered to be at higher risk for oral bacterial and fungal infection than the general population. Aim: To study oropharyngeal flora in head and neck cancer patients under treatment and to correlate their incidence according with Chemotherapy cycles and Radiochemotherapy...
September 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/29206226/merging-ft-ir-and-ngs-for-simultaneous-phenotypic-and-genotypic-identification-of-pathogenic-candida-species
#20
Claudia Colabella, Laura Corte, Luca Roscini, Volha Shapaval, Achim Kohler, Valeria Tafintseva, Carlo Tascini, Gianluigi Cardinali
The rapid and accurate identification of pathogen yeast species is crucial for clinical diagnosis due to the high level of mortality and morbidity induced, even after antifungal therapy. For this purpose, new rapid, high-throughput and reliable identification methods are required. In this work we described a combined approach based on two high-throughput techniques in order to improve the identification of pathogenic yeast strains. Next Generation Sequencing (NGS) of ITS and D1/D2 LSU marker regions together with FTIR spectroscopy were applied to identify 256 strains belonging to Candida genus isolated in nosocomial environments...
2017: PloS One
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