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https://www.readbyqxmd.com/read/29346411/evaluation-of-hirst-type-spore-traps-in-outdoor-aspergillaceae-monitoring-during-large-demolition-work-in-hospital
#1
Sophie Tiphaine Loeffert, Philippe Vanhems, Estelle Tissot, Cédric Dananché, Pierre Cassier, Thomas Bénet, Michel Perraud, Michel Thibaudon, Marie-Paule Gustin
Demolition can generate fungal spore suspensions in association with various adverse health effects, such as high risk of invasive aspergillosis in immunocompromised patients. One block of Edouard Herriot Hospital was entirely demolished. The aim of the present study was to evaluate Hirst-type spore traps utility in monitoring outdoor Aspergillaceae (Aspergillus spp. + Penicillium spp.) spores in part of Edouard Herriot Hospital (Lyon, France) undergoing major demolition. Three periods were scheduled in 2015: (A) Gutting of building and asbestos removal, (B) Demolition of floors, (C) Excavation and earthwork...
2018: PloS One
https://www.readbyqxmd.com/read/29346250/incidence-etiology-and-clinicopathologic-features-of-endobronchial-benign-lesions-a-10-year-consecutive-retrospective-study
#2
Alessandro Marchioni, Eleonora Casalini, Alessandro Andreani, Gaia Cappiello, Ivana Castaniere, Riccardo Fantini, Maria Cecilia Mengoli, Roberto Tonelli, Enrico M Clini, Giulio Rossi
BACKGROUND: Airways can be affected by non-neoplastic lesions leading to critical stenosis of the lumen. Incidence, etiology, and clinical significance of endobronchial benign lesions are not systematically characterized.This study aimed to assess the epidemiology of nonmalignant processes involving the bronchial tree on clinical, pathologic, endoscopic, and radiologic grounds. METHODS: We retrospectively analyzed bronchoscopy procedures over 10 years at the Bronchoscopy Unit of Modena University Hospital...
January 16, 2018: Journal of Bronchology & Interventional Pulmonology
https://www.readbyqxmd.com/read/29345916/monitoring-h2o2-inside-aspergillus-fumigatus-with-an-integrated-microelectrode-the-role-of-peroxiredoxin-protein-prx1
#3
Carla S Santos, Renata Bannitz-Fernandes, Alex S Lima, Carlos A Tairum, Iran Malavazi, Luis Eduardo S Netto, Mauro Bertotti
In vivo studies on the degradation of exogenous hydrogen peroxide (H2O2) in the microenvironment of Aspergillus fumigatus fungus were performed by using an integrated Pt microelectrode. Three A. fumigatus strains were used to confirm the role of the cytosolic protein Prx1 on the defense mechanism of this microorganism: a wild-type strain, capable to express the protein Prx1; a Δprx strain, whose gene prx1 was removed; and a complemented Δprx1::prx1+ strain derivatized from the Δprx and in which the gene prx1 was re-introduced...
January 18, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29345613/comparative-transcriptomics-of-aspergillus-fumigatus-strains-upon-exposure-to-human-airway-epithelial-cells
#4
Tonya N Watkins, Hong Liu, Matthew Chung, Tracy H Hazen, Julie C Dunning Hotopp, Scott G Filler, Vincent M Bruno
Aspergillus fumigatus is an opportunistic, ubiquitous, saprophytic mould that can cause severe allergic responses in atopic individuals as well as life-threatening infections in immunocompromised patients. A critical step in the establishment of infection is the invasion of airway epithelial cells by the inhaled fungi. Understanding how A. fumigatus senses and responds to airway cells is important to understand the pathogenesis of invasive pulmonary aspergillosis. Here, we analysed the transcriptomes of two commonly used clinical isolates, Af293 and CEA10, during infection of the A549 type II pneumocyte cell line in vitro...
January 18, 2018: Microbial Genomics
https://www.readbyqxmd.com/read/29343867/improving-survival-of-acute-on-chronic-liver-failure-patients-complicated-with-invasive-pulmonary-aspergillosis
#5
Jie Gao, Qing Zhang, Yuankui Wu, Ying Li, Tingting Qi, Congyan Zhu, Sijia Liu, Ruoxi Yu, Qinjun He, Weiqun Wen, Fuyuan Zhou, Yongpeng Chen, Jinjun Chen, Jinlin Hou
The mortality of acute-on-chronic liver failure (ACLF) patients complicated with invasive pulmonary aspergillosis (IPA) was extremely high. We aimed to explore prognostic value of the Chronic Liver Failure-Sequential Organ Failure Assessment (CLIF-SOFA) lung score and to establish an optimal voriconazole regimen for ACLF patients complicated with IPA. We retrospectively screened hospitalized ACLF patients in our hospital from July 2011 to April 2016, from which 20 probable IPA cases were diagnosed. Along with onsets of IPA, deteriorated diseases severity, especially lung conditions were found in those 20 ACLF patients...
January 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29342967/structural-diversity-and-biological-activities-of-cyclic-depsipeptides-from-fungi
#6
REVIEW
Xiaohan Wang, Xiao Gong, Peng Li, Daowan Lai, Ligang Zhou
Cyclic depsipeptides (CDPs) are cyclopeptides in which amide groups are replaced by corresponding lactone bonds due to the presence of a hydroxylated carboxylic acid in the peptide structure. These peptides sometimes display additional chemical modifications, including unusual amino acid residues in their structures. This review highlights the occurrence, structures and biological activities of the fungal CDPs reported until October 2017. About 352 fungal CDPs belonging to the groups of cyclic tri-, tetra-, penta-, hexa-, hepta-, octa-, nona-, deca-, and tridecadepsipeptides have been isolated from fungi...
January 15, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29340615/a-simple-method-to-detect-the-tandem-repeat-of-the-cyp51a-promoter-in-azole-resistant-strains-of-aspergillus-fumigatus
#7
Takahito Toyotome, Daisuke Hagiwara, Akira Watanabe, Katsuhiko Kamei
We designed primers and cycling probes to detect the tandem repeat (TR) of cyp51A promoter in Aspergillus fumigatus. A control-probe was designed to anneal to the outside of the TR region, whereas a TR-probe was designed to anneal to the inside of the TR region. For amplification and probe-hydrolysis detection, the CycleavePCR system was used. Although the difference between Ct values of the wild-type genome for the control-probe and the TR-probe was around -0.1, the difference between Ct values of TR-harboring strains was around 0...
January 11, 2018: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/29339289/characterization-of-two-extracellular-%C3%AE-glucosidases-produced-from-the-cellulolytic-fungus-aspergillus-sp-ydj216-and-their-potential-applications-for-the-hydrolysis-of-flavone-glycosides
#8
Jong Min Oh, Jae Pil Lee, Seung Cheol Baek, Seul Gi Kim, Yang Do Jo, Jungho Kim, Hoon Kim
A cellulolytic fungus YDJ216 was isolated from a compost and identified as an Aspergillus sp. strain. Two extracellular β-glucosidases, BGL1 and BGL2, were purified using ultrafiltration, ammonium sulfate fractionation, and High-Q chromatography. Molecular masses of BGL1 and BGL2 were estimated to be 97 and 45 kDa, respectively, by SDS-PAGE. The two enzymes eluted as one peak at 87 kDa by Sephacryl S-200 chromatography, and located at similar positions in a zymogram after intact gel electrophoresis, suggesting BGL1 and BGL2 might be monomeric and dimeric, respectively...
January 12, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29338819/in-vitro-efficacy-of-continuous-mild-high-temperature-on-the-biofilm-formation-of-aspergillus-niger
#9
Rong Zeng, Jian Bo Tong, Yu Zhen Liu, Qing Chen, Tong Lin, Min Li, Gui Xia Lü
Objective To investigate whether continuous mild high temperature (increased temperature without causing significant damage to host cells) can inhibit the biofilm formation of Aspergillus niger (A.niger) and its vitality.Methods A.niger biofilms were formed on a coverslip in 24-well tissue culture plate and were checked at the time points 4,8,10,16,24,48 and 72 hours.Confocal laser scanning microscopy (CLSM) was used to image and quantify A.niger biofilm formation under three different continuous mild high temperatures at 37℃,39℃,and 41℃...
December 20, 2017: Zhongguo Yi Xue Ke Xue Yuan Xue Bao. Acta Academiae Medicinae Sinicae
https://www.readbyqxmd.com/read/29338637/selected-plant-essential-oils-and-their-main-active-components-a-promising-approach-to-inhibit-aflatoxigenic-fungi-and-aflatoxin-production-in-food
#10
José Vicente Gómez, Andrea Tarazona, Rufino Mateo-Castro, José Vicente Gimeno-Adelantado, Misericordia Jiménez, Eva M Mateo
Recent research has showed that Aspergillus flavus and Aspergillus parasiticus are aflatoxigenic species that can become very competitive in the framework of climate change. Aflatoxins show carcinogenic, mutagenic, immunotoxic and teratogenic effects on human and animals. Effective and sustainable measures to inhibit these species and aflatoxins in food are required. Origanum vulgare and Cinnamomum zeylanicum essential oils (EOs) and their major active constituents, carvacrol and cinnamaldehyde, respectively, were assayed for inhibiting these species and aflatoxin production in maize extract medium under different environmental conditions...
January 17, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/29334729/polyoxygenated-cyclohexenoids-with-promising-%C3%AE-glycosidase-inhibitory-activity-produced-by-phomopsis-sp-ye3250-an-endophytic-fungus-derived-from-paeonia-delavayi
#11
Rong Huang, Bo-Guang Jiang, Xiao-Nian Li, Ya-Ting Wang, Si-Si Liu, Kai-Xuan Zheng, Jian He, Shao-Hua Wu
Seven new polyoxygenated cyclohexenoids, namely, phomopoxides A-G (1-7), were isolated from the fermentation broth extract of an endophytic fungal strain Phomopsis sp. YE3250 from the medicinal plant Paeonia delavayi Franch. The structures of these compounds were established by spectroscopic interpretation. The absolute configurations of compounds 1 and 4 were confirmed by X-ray crystallographic analysis and chemical derivative approach. All isolated compounds showed weak cytotoxic activities towards three human tumor cell lines (Hela, MCF-7, and NCI-H460), and weak antifungal activities against five pathogenic fungi (Candida albicans, Aspergillus niger, Pyricularia oryzae, Fusarium avenaceum, and Hormodendrum compactum)...
January 15, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29334221/extracellular-enzyme-composition-and-functional-characteristics-of-aspergillus-niger-an-76-induced-by-food-processing-byproducts-and-based-on-integrated-functional-omics
#12
Lin Liu, Weili Gong, Xiaomeng Sun, Guanjun Chen, Lushan Wang
Byproducts of food processing can be utilized for the production of high-value-added enzyme cocktails. In this study, we utilized integrated functional-omics technology to analyze composition and functional characteristics of extracellular enzymes produced by Aspergillus niger grown on food processing byproducts. The results showed that oligosaccharides constituted by arabinose, xylose, and glucose in wheat bran were able to efficiently induce the production of extracellular enzymes of A. niger. Compared with other substrates, wheat bran was more effective at inducing the secretion of β-glucosidases from GH1 and GH3 families, as well as >50% of proteases from A1-family aspartic proteases...
January 15, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29333738/antibacterial-and-antifungal-activity-of-poly-lactic-acid-bovine-lactoferrin-nanofiber-membranes
#13
Raul Machado, André da Costa, Dina M Silva, Andreia C Gomes, Margarida Casal, Vitor Sencadas
Antimicrobial materials have become relevant for local therapies preventing microbial resistance induced by systemic antibiotic treatments. This work reports the development of electrospun poly(lactic acid) (PLLA) nanofiber membranes loaded with bovine lactoferrin (bLF) up to 20 wt%. The membranes present smooth and nondefective fibers with mean diameters between 717 ± 197 and 495 ± 127 nm, and an overall porosity of ≈80%. The hydrophobicity of the PLLA membranes is reduced by the presence of bLF. The release profile of bLF correlates with an anomalous transport model, with 17...
January 15, 2018: Macromolecular Bioscience
https://www.readbyqxmd.com/read/29333407/the-limited-role-of-serum-galactomannan-assay-in-screening-for-invasive-pulmonary-aspergillosis-in-allogeneic-stem-cell-transplantation-recipients-on-micafungin-prophylaxis-a-retrospective-study
#14
Ryul Kim, Youngil Koh, Dong-Yeop Shin, Pyoeng Gyun Choe, Nam Joong Kim, Sung-Soo Yoon, Myoung-Don Oh, Wan Beom Park, Inho Kim
Background: We evaluated the outcomes of serum galactomannan (GM) assay for the screening of invasive pulmonary aspergillosis (IPA) in allogeneic hematopoietic stem cell transplantation (alloHSCT) recipients while on primary antifungal prophylaxis (PAP). Methods: This study included patients with hematologic disorders who underwent alloHSCT from January 2013 to November 2015. Patients received routine PAP with fluconazole before 2014 and micafungin after 2014; serum GM tests were performed and retrospectively analyzed...
December 2017: Blood Research
https://www.readbyqxmd.com/read/29333049/marine-derived-fungi-extracts-enhance-the-cytotoxic-activity-of-doxorubicin-in-nonsmall-cell-lung-cancer-cells-a459
#15
Bruno Castro-Carvalho, Alice A Ramos, Maria Prata-Sena, Fernanda Malhão, Márcia Moreira, Daniela Gargiulo, Tida Dethoup, Suradet Buttachon, Anake Kijjoa, Eduardo Rocha
Background: Drug resistance is a major concern in the current chemotherapeutic approaches and the combination with natural compounds may enhance the cytotoxic effects of the anticancer drugs. Therefore, this study evaluated the cytotoxicity of crude ethyl extracts of six marine-derived fungi - Neosartorya tsunodae KUFC 9213 (E1), Neosartorya laciniosa KUFC 7896 (E2), Neosartorya fischeri KUFC 6344 (E3), Aspergillus similanensis KUFA 0013 (E4), Neosartorya paulistensis KUFC 7894 (E5), and Talaromyces trachyspermum KUFC 0021 (E6) - when combined with doxorubicin (Dox), in seven human cancer cell lines...
December 2017: Pharmacognosy Research
https://www.readbyqxmd.com/read/29332217/a-novel-glucuronoyl-esterase-from-aspergillus-fumigatus-the-role-of-conserved-lys-residue-in-the-preference-for-4-o-methyl-glucuronoyl-esters
#16
Hung Hiep Huynh, Nozomi Ishii, Ichiro Matsuo, Manabu Arioka
Cellulose in plant cell walls is mainly covered by hemicellulose and lignin, and thus efficient removal of these components is thought to be a key step in the optimal utilization of lignocellulose. The recently discovered carbohydrate esterase (CE) 15 family of glucuronoyl esterases (GEs) which cleave the linkages between the free carboxyl group of D-glucuronic acid in hemicellulose and the benzyl groups in lignin residues could contribute to this process. Herein, we report the identification, functional expression, and enzymatic characterization of a GE, AfGE, from the filamentous fungus Aspergillus fumigatus...
January 14, 2018: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29332129/aspergillus-fumigatus-increased-par-2-expression-and-elevated-proinflammatory-cytokines-expression-through-the-pathway-of-par-2-erk1-2-in-cornea
#17
Yawen Niu, Guiqiu Zhao, Cui Li, Jing Lin, Nan Jiang, Chengye Che, Jie Zhang, Qiang Xu
Purpose: To determine the role of protease-activated receptor-2 (PAR-2) in cornea infected by Aspergillus fumigatus. Methods: PAR-2 was tested in normal and infected corneas of C57BL/6 mice. Mice corneas were infected with A. fumigatus with or without pretreatment of PAR-2 antagonist (FSLLRY-NH2). Polymorphonuclear neutrophilic leukocytes (PMNs) were stimulated with 75% ethanol-killed A. fumigatus with or without pretreatment of FSLLRY-NH2. Disease severity was documented by clinical score and photographs with a slit lamp...
January 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29331673/diversity-of-aspergillus-section-nigri-on-the-surface-of-vitis-labrusca-and-its-hybrid-grapes
#18
Larissa de Souza Ferranti, Maria Helena P Fungaro, Fernanda Pelisson Massi, Josué José da Silva, Rafael Elias Silva Penha, Jens Christian Frisvad, Marta Hiromi Taniwaki, Beatriz Thie Iamanaka
This study investigated the presence of Aspergillus species belonging to Aspergillus section Nigri on Vitis labrusca and its hybrid grapes grown in Brazil. The ability of the fungi isolates to produce ochratoxin A (OTA) and fumonisin B2 (FB2) as well as the presence of these mycotoxins in the grapes were also studied. Eighty-eight samples were collected from the main grape producing states in Brazil: Rio Grande do Sul (n=30), Pernambuco (n=21), São Paulo (n=21) and Paraná (n=16). The highest average contamination level by A...
January 4, 2018: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/29331636/cell-wall-damage-and-oxidative-stress-in-candida-albicans-atcc10231-and-aspergillus-niger-caused-by-palladium-nanoparticles
#19
Martha Samira Athie-García, Hilda Amelia Piñón-Castillo, Laila Nayzzel Muñoz-Castellanos, Ana Laura Ulloa-Ogaz, Perla Ivonne Martínez-Varela, Armando Quintero-Ramos, Robert Duran, José Guadalupe Murillo-Ramirez, Erasmo Orrantia-Borunda
In this work the toxic effect of Palladium nanoparticles (PdNPs) was investigated in two eukaryotic cell models, Candida albicans and Aspergillus niger. PdNPs were synthesized by chemical reduction method, obtaining spherical NPs with a primary size ranging from 3 to 15 nm. PdNPs showed a hydrodynamic size of 1548 nm in Lee's minimum media. Minimal inhibitory concentration was determined at 200 and 250 ppm for Candida albicans and Aspergillus niger respectively, revealing a significant cell growth inhibition (ANOVA and tukey analysis, α = 0...
January 10, 2018: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/29331516/simultaneous-saccharification-and-aerobic-fermentation-of-high-titer-cellulosic-citric-acid-by-filamentous-fungus-aspergillus-niger
#20
Weiliang Hou, Jie Bao
Simultaneous saccharification and fermentation (SSF) is the most efficient operation in biorefining conversion, but aerobic SSF under high solids loading significantly faces the serious oxygen transfer limitation. This study took the first insight into an aerobic SSF by high oxygen demanding filamentous fungi in highly viscous lignocellulose hydrolysate. The results show that oxygen requirement in the aerobic SSF by Aspergillus niger was well satisfied for production of cellulosic citric acid. The record high citric acid titer of 136...
January 4, 2018: Bioresource Technology
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