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https://www.readbyqxmd.com/read/28942846/trichosporon-asahii-secretes-a-30-kda-aspartic-peptidase
#1
Roberta S Valle, Lívia S Ramos, Vanessa J Reis, Mariangela Ziccardi, Marcos Dornelas-Ribeiro, Cátia L Sodré, Marta H Branquinha, André L S Santos
Trichosporon asahii is a fungal opportunistic pathogen that causes superficial and deep-seated infections presenting high mortality. Very little is known about the virulence attributes produced by this fungus. Herein, aspartic peptidase production was identified in Brazilian clinical isolates of T. asahii by different methodologies. Initially, T. asahii strain 250 (from skin lesion) was inoculated in both liquid and solid culture media containing bovine serum albumin (BSA) as the sole nitrogenous source. A translucent halo around the fungal colony was observed from the 5th day of culture...
December 2017: Microbiological Research
https://www.readbyqxmd.com/read/28930236/antibacterial-and-antifungal-activity-of-essential-oils-against-pathogens-responsible-for-otitis-externa-in-dogs-and-cats
#2
Valentina V Ebani, Simona Nardoni, Fabrizio Bertelloni, Basma Najar, Luisa Pistelli, Francesca Mancianti
Background: Essential oils (EOs) are recommended by some veterinarians to treat otitis externa in pets, but data about their efficacy in scientific literature are very scant. Methods: Nine commercial EOs, from roman chamomile (Anthemis nobilis L.), star anise (Illicium verum), lavender (Lavandula hybrida), litsea (Litsea cubeba (Lour.) Pers.), basil (Ocimum basilicum L.), oregano (Origanum vulgare L. subsp. hirticum), rosemary (Rosmarinus officinalis L.), clary sage (Salvia sclarea L.), and thyme (Thymus vulgaris L...
April 21, 2017: Medicines (Basel, Switzerland)
https://www.readbyqxmd.com/read/28895710/-trichosporon-asahii-sepsis-associated-with-urinary-catheter-in-a-pediatric-burn-unit-2-case-reports
#3
Florencia Escarrá, Jimena Lema, Beatriz Caracciolo, Susana Carnovale, Verónica Alvarez, Nidia Tramonti, Fabián Guarracino, M Teresa Rosanova
Trichosporon asahii is a ubiquitous fungus that has been isolated as part of human microbiota. There has been an emergence of this pathogen in recent years, causing superficial and deep seated infections. There are scarce reports of urinary tract infections in pediatric intensive care burn units caused by this agent. We describe the cases of 2 pediatric patients with prolonged hospitalization due to severe burns that had received several antibiotic courses for previous infections. Both presented sepsis secondary to catheter related urinary tract infection by Trichosporon asahii...
October 1, 2017: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/28887004/-mycological-profile-of-hand-onychomycosis-amongs-garba-sellers-in-abidjan-c%C3%A3-te-d-ivoire
#4
P C M Kiki-Barro, A Konaté, F K Kassi, E K Angora, H Bosson-Vanga, A V Bedia-Tanoh, V Djohan, W Yavo, E I H Menan
OBJECTIVE: The aim of this study is to determine the prevalence and the fungi involved in onychomycosis located on fingers in Abidjan. MATERIAL AND METHODS: This study includes the sellers of cooked cassava semolina served with fried tuna fish called "garba". Fines squames specimen was processed with 30% KOH for a direct microscope examination. Serous collection were done in physiological serum. Part of the original sample was cultured on Sabouraud medium with antibiotics (chloramphénicol, actidione)...
September 5, 2017: Journal de Mycologie Médicale
https://www.readbyqxmd.com/read/28871863/the-hiv-aspartyl-protease-inhibitor-ritonavir-impairs-planktonic-growth-biofilm-formation-and-proteolytic-activity-in-trichosporon-spp
#5
Rossana de Aguiar Cordeiro, Rosana Serpa, Patrícia Bruna Leite Mendes, Antonio José de Jesus Evangelista, Ana Raquel Colares Andrade, Jônatas da Silva Franco, Vandbergue Dos Santos Pereira, Lucas Pereira de Alencar, Jonathas Sales de Oliveira, Zoilo Pires de Camargo, Reginaldo Gonçalves de Lima Neto, Débora de Souza Collares Maia Castelo-Branco, Raimunda Samia Nogueira Brilhante, Marcos Fabio Gadelha Rocha, José Júlio Costa Sidrim
This study evaluated the effect of the protease inhibitor ritonavir (RIT) on Trichosporon asahii and Trichosporon inkin. Susceptibility to RIT was assessed by the broth microdilution assay and the effect of RIT on protease activity was evaluated using azoalbumin as substrate. RIT was tested for its anti-biofilm properties and RIT-treated biofilms were assessed regarding protease activity, ultrastructure and matrix composition. In addition, antifungal susceptibility, surface hydrophobicity and biofilm formation were evaluated after pre-incubation of planktonic cells with RIT for 15 days...
September 2017: Biofouling
https://www.readbyqxmd.com/read/28859550/optimization-and-mechanisms-for-biodecoloration-of-a-mixture-of-dyes-by-trichosporon-akiyoshidainum-hp-2023
#6
María M Martorell, María Del M Rosales Soro, Hipólito F Pajot, Lucía I C de Figueroa
Trichosporon akiyoshidainum HP2023 is a basidiomycetous yeast isolated from Las Yungas rainforest (Tucumán, Argentina) and selected based on its outstanding textile dye decolorizing ability. In this work, the decolorization process was optimized using Reactive Black 5 as dye model. Lactose and urea were chosen as carbon and nitrogen sources through a one-at-time approach. Afterwards, factorial designs were employed for medium optimization; leading to the formulation of a simpler optimized medium which contains in g L(-1): lactose 10, yeast extract 1, urea 0...
September 1, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28857665/efficient-bioconversion-from-acid-hydrolysate-of-waste-oleaginous-yeast-biomass-after-microbial-oil-extraction-to-bacterial-cellulose-by-komagataeibacter-xylinus
#7
Mu-Tan Luo, Chao Huang, Xue-Fang Chen, Qian-Lin Huang, Gao-Xiang Qi, Lan-Lan Tian, Lian Xiong, Hai-Long Li, Xin-De Chen
Biomass acid hydrolysate of oleaginous yeast Trichosporon cutaneum after microbial oil extraction was applied as substrate for bacterial cellulose (BC) production by Komagataeibacter xylinus (also named as Gluconacetobacter xylinus previously) for the first time. BC was synthesized in static culture for ten days and the maximum BC yield (2.9 g/ L) was got at the 4th day of fermentation. Most carbon sources in the substrate (glucose, mannose, formic acid, acetic acid, etc.) can be utilized by K. xylinus...
August 31, 2017: Preparative Biochemistry & Biotechnology
https://www.readbyqxmd.com/read/28855483/current-status-of-taxonomy-of-pathogenic-yeasts
#8
Takashi Sugita, Otomi Cho, Masako Takashima
Fungal taxonomy has been reconstructed on the basis of genome information, and new nomenclatural rules have been enacted from 2013. It has been proposed that Cryptococcus neoformans and Cryptococcus gattii be reclassified into two species (C. neoformans and Cryptococcus deneoformans) and five species (C. gattii, Cryptococcus bacillisporus, Cryptococcus deuterogattii, Cryptococcus tetragattii, and Cryptococcus decagattii), respectively. The genus Trichosporon has been reclassified into five genera. Trichosporon asahii, which is the causative agent of trichosporonosis, has been retained in the genus Trichosporon, while Trichosporon cutaneum has been transferred into a new genus, Cutaneotrichosporon...
2017: Medical Mycology Journal
https://www.readbyqxmd.com/read/28852423/single-cell-oil-production-by-trichosporon-cutaneum-from-steam-exploded-corn-stover-and-its-upgradation-for-production-of-long-chain-%C3%AE-%C3%AF-dicarboxylic-acids
#9
Chen Zhao, Hao Fang, Shaolin Chen
BACKGROUND: Single cell oil (SCO) production from lignocelluloses by oleaginous microorganisms is still high in production cost, making the subsequent production of biofuels inviable economically in such an era of low oil prices. Therefore, how to upgrade the final products of lignocellulose-based bioprocess to more valuable ones is becoming a more and more important issue. RESULTS: Differently sourced cellulases were compared in the enzymatic hydrolysis of the steam-exploded corn stover (SECS) and the cellulase from the mixed culture of Trichoderma reesei and Aspergillus niger was found to have the highest enzymatic hydrolysis yield 86...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/28821976/dysbiosis-signature-of-mycobiota-in-colon-polyp-and-colorectal-cancer
#10
R Gao, C Kong, H Li, L Huang, X Qu, N Qin, H Qin
Microbiota refers to a colony of microorganisms, and they are found in all multicellular organisms. This colony plays a major role in both the physiology and disease of the organism it inhabits. Much attention has been paid to host-microbiota interactions, but there has been little investigation on its role in carcinogenesis. In this study, we characterized a fecal mycobiota, also known as fungal signature, for the first time with 131 subjects, comprising polyp and colorectal cancer (CRC) patients, as well as a healthy control population...
August 18, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28803054/decolorization-of-reactive-azo-dyes-using-a-sequential-chemical-and-activated-sludge-treatment
#11
Ken Meerbergen, Sam Crauwels, Kris A Willems, Raf Dewil, Jan Van Impe, Lise Appels, Bart Lievens
Textile wastewater contains high concentrations of organic substances derived from diverse dyes and auxiliary chemicals, some of which are non-biodegradable and/or toxic. Therefore, it is essential that textile wastewater is treated and that these substances are removed before being discharged into the environment. A combination of advanced oxidation processes (AOPs) to obtain partial dye degradation followed by a biological treatment has been suggested as a promising method for cost-effective decolorization of wastewater...
August 9, 2017: Journal of Bioscience and Bioengineering
https://www.readbyqxmd.com/read/28799153/-fungi-in-the-gut-the-gut-mycobiome
#12
Herbert Hof
Many different fungi, including yeasts and molds, can be found in the intestinal tract of humans constituting the gut mycobiome. In case the bacterial flora is altered, the fungal flora may react inversely. By a so-called fungal diet, however, the composition of the mycobiome can hardly be influenced. Whereas some fungi are only transiently present in the gut after oral uptake, others, such as Candida, Saccharomyces, Rhodotorula, Trichosporon, Geotrichum, amongst others, are members of the residential, autochthonous gut flora...
August 2017: Zeitschrift Für Gastroenterologie
https://www.readbyqxmd.com/read/28794959/cutaneous-lesions-due-to-trichosporon-jirovecii-in-a-tortoise-testudo-hermanni
#13
Simona Nardoni, Marco Salvadori, Alessandro Poli, Guido Rocchigiani, Francesca Mancianti
Cutaneous mycoses have been rarely reported in Chelonians. A Testudo hermanni adult male showed a thick erosion of the dorsal neck covered by necrotic material. Trichosporon sp. was cultivated, while arthrospores and hyphae were observed in histological sections. The causative agent was identified as Trichosporon jirovecii by PCR. After a surgical intervention povidone iodine and Iruxol® ointment were daily administered through the drainage for 2 weeks, along with enrofloxacin 5 mg diluted in saline 0.5 ml via the intracelomatic route...
December 2017: Medical Mycology Case Reports
https://www.readbyqxmd.com/read/28790984/acidotolerant-bacteria-and-fungi-as-a-sink-of-methanol-derived-carbon-in-a-deciduous-forest-soil
#14
Mareen Morawe, Henrike Hoeke, Dirk K Wissenbach, Guillaume Lentendu, Tesfaye Wubet, Eileen Kröber, Steffen Kolb
Methanol is an abundant atmospheric volatile organic compound that is released from both living and decaying plant material. In forest and other aerated soils, methanol can be consumed by methanol-utilizing microorganisms that constitute a known terrestrial sink. However, the environmental factors that drive the biodiversity of such methanol-utilizers have been hardly resolved. Soil-derived isolates of methanol-utilizers can also often assimilate multicarbon compounds as alternative substrates. Here, we conducted a comparative DNA stable isotope probing experiment under methylotrophic (only [(13)C1]-methanol was supplemented) and combined substrate conditions ([(12)C1]-methanol and alternative multi-carbon [(13)Cu]-substrates were simultaneously supplemented) to (i) identify methanol-utilizing microorganisms of a deciduous forest soil (European beech dominated temperate forest in Germany), (ii) assess their substrate range in the soil environment, and (iii) evaluate their trophic links to other soil microorganisms...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28771577/a-survey-of-the-mycobiota-associated-with-larvae-of-the-black-soldier-fly-hermetia-illucens-reared-for-feed-production
#15
Ilaria Varotto Boccazzi, Matteo Ottoboni, Elena Martin, Francesco Comandatore, Lisa Vallone, Thomas Spranghers, Mia Eeckhout, Valeria Mereghetti, Luciano Pinotti, Sara Epis
Feed security, feed quality and issues surrounding the safety of raw materials are always of interest to all livestock farmers, feed manufacturers and competent authorities. These concerns are even more important when alternative feed ingredients, new product developments and innovative feeding trends, like insect-meals, are considered. The black soldier fly (Hermetia illucens) is considered a good candidate to be used as feed ingredient for aquaculture and other farm animals, mainly as an alternative protein source...
2017: PloS One
https://www.readbyqxmd.com/read/28720316/pigeons-and-their-droppings-as-reservoirs-of-candida-and-other-zoonotic-yeasts
#16
Inmaculada Rosario Medina, Lorena Román Fuentes, Miguel Batista Arteaga, Fernando Real Valcárcel, Félix Acosta Arbelo, Daniel Padilla Del Castillo, Soraya Déniz Suárez, Otilia Ferrer Quintana, Belinda Vega Gutiérrez, Freddy Silva Sergent, Begoña Acosta-Hernández
BACKGROUND: The importance of pigeons as reservoirs and carriers of Cryptococcus neoformans and other species of this genus is well-known; however, less is known about their role as reservoirs and carriers of other yeasts that impact public health. AIMS: The present study was performed on Gran Canaria Island to define yeasts other than Cryptococcus spp. that have been reported to impact public health and which could be carried by pigeons. METHODS: Samples were obtained from 83 pigeon lofts (Columba livia); moreover, 331 crop samples, 331 cloacal samples and 174 dropping samples were collected...
July 15, 2017: Revista Iberoamericana de Micología
https://www.readbyqxmd.com/read/28695994/comparative-efficacy-of-bentonite-clay-activated-charcoal-and-trichosporon-mycotoxinivorans-in-regulating-the-feed-to-tissue-transfer-of-mycotoxins
#17
Sheraz Ahmed Bhatti, Muhammad Zargham Khan, Zahoor Ul Hassan, Muhammad Kashif Saleemi, Muhammad Saqib, Aisha Khatoon, Masood Akhter
BACKGROUND: Mycotoxins contamination in animal products and by-product is a persistent threat to food and feed industry. The present study was designed to evaluate the comparative inhibitory effects of bentonite (BN), activated charcoal (AC) and a newly discovered yeast Trichosporon mycotoxinivorans (TM) against feed-to-tissue transfer of mycotoxins. RESULTS: A dose dependent increase as determined by HPLC, in the residues of AFB1 and OTA was exhibited in the groups of birds fed AFB1 and OTA alone...
July 11, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28666148/corn-bran-bioprocessing-development-of-an-integrated-process-for-microbial-lipids-production
#18
Jung-Eun Lee, Praveen V Vadlani, Jon Faubion
This study investigated the potential of corn bran as a feedstock for microbial lipid production using oleaginous yeast, Trichosporon oleaginosus ATCC20509. Different conditions (solid loading of biomass, acid loading, and pretreatment duration) were applied to optimize pretreatment processes using the Box-Behnken design. The highest sugar yield of 0.53g/g was obtained from corn bran hydrolysates at a pretreatment condition of 5% solid loading and 1% acid loading for 30min. Compared with synthetic media, up to 50% higher lipid accumulations in T...
June 27, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28663328/comparative-evaluation-of-six-chromogenic-media-for-presumptive-yeast-identification
#19
Alessandra Vecchione, Walter Florio, Francesco Celandroni, Simona Barnini, Antonella Lupetti, Emilia Ghelardi
AIMS: The present study was undertaken to evaluate the discrimination ability of six chromogenic media in presumptive yeast identification. METHODS: We analysed 108 clinical isolates and reference strains belonging to eight different species: Candida albicans,Candida dubliniensis, Candida tropicalis, Candida krusei, Candida glabrata, Candida parapsilosis,Candida lusitaniae and Trichosporon mucoides. RESULTS: C. albicans, C. tropicalis and C...
June 29, 2017: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28662427/oral-mycoses-in-avian-scavengers-exposed-to-antibiotics-from-livestock-farming
#20
Aida Pitarch, Concha Gil, Guillermo Blanco
The exposure to antimicrobial pharmaceuticals as environmental contaminants can exert direct and indirect detrimental effects on health of wildlife. Fungal infections pose a major threat to domestic, captive-housed wild and free-ranging wild animals worldwide. However, little is known about their role in disease in birds in the wild. Here, we evaluated the incidence of thrush-like lesions in the oral cavity of wild nestling cinereous vultures (Aegypius monachus), griffon vultures (Gyps fulvus), Egyptian vultures (Neophron percnopterus) and golden eagles (Aquila chrysaetos) exposed to veterinary antibiotics via the consumption of medicated livestock carcasses...
December 15, 2017: Science of the Total Environment
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