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Medical Mycology: Official Publication of the International Society for Human and Animal Mycology

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https://www.readbyqxmd.com/read/28431114/molecular-characterization-of-cryptococcus-neoformans-isolated-from-the-environment-in-beijing-china
#1
Hongtao Dou, Huizhu Wang, Shaowei Xie, Xinxin Chen, Zhipeng Xu, Yingchun Xu
The molecular type of environmental Cryptococcus neoformans in Beijing was not clear. Our study aims to reveal the molecular characterization of C. neoformans complex from environment in Beijing, China. A total of 435 samples of pigeon droppings from 11 different homes in Beijing were collected from August to November in 2015. Pigeon droppings were inoculated onto caffeic acid cornmeal agar (CACA) to screen C. neoformans complex. Bruker Biotyper matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) was performed for species identification...
April 20, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28431110/african-histoplasmosis-new-clinical-and-microbiological-insights
#2
C Valero, S Gago, M C Monteiro, A Alastruey-Izquierdo, M J Buitrago
African histoplasmosis is defined as the fungal infection caused by Histoplasma capsulatum var. duboisii (Hcd). Studies focused on distinguishing Hcd and H. capsulatum var. capsulatum (Hcc), which coexist in Africa, are scarce or outdated, and African strains are continuously underrepresented. In this work, 13 cases of African patients with histoplasmosis diagnosed in the Spanish Mycology Reference Laboratory have been reviewed showing that 77% had disseminated disease and AIDS as underlying disease although Hcd infection has been classically considered a rare presentation in AIDS patients...
April 20, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28431022/cpp1-phosphatase-mediated-signaling-crosstalk-between-hog1-and-cek1-mitogen-activated-protein-kinases-is-involved-in-the-phenotypic-transition-in-candida-albicans
#3
Fu-Sheng Deng, Ching-Hsuan Lin
Cellular signaling pathways involved in cell growth and differentiation mediated by mitogen-activated protein kinase (MAPK) cascades have been well characterized in fungi. However, the mechanisms of signaling crosstalk between MAPKs to ensure signaling specificity are largely unknown. Previous work showed that activation of the Candida albicans Cek1 MAPK pathway resulted in opaque cell formation and filamentation, which mirrored the phenotypes to hog1Δ. Additionally, deleting the HOG1 gene stimulated Cek1p...
April 20, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28431008/diabetes-mellitus-as-the-major-risk-factor-for-mucormycosis-in-mexico-epidemiology-diagnosis-and-outcomes-of-reported-cases
#4
Dora E Corzo-León, Luis D Chora-Hernández, Ana P Rodríguez-Zulueta, Thomas J Walsh
Mucormycosis is an emerging infectious disease with high rates of associated mortality and morbidity. Little is known about the characteristics of mucormycosis or entomophthoromycosis occurring in Mexico. A search strategy was performed of literature published in journals found in available databases and theses published online at Universidad Nacional Autónoma de México (UNAM) library website reporting clinical cases or clinical case series of mucormycosis and entomophthoromycosis occurring in Mexico between 1982 and 2016...
April 20, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28431001/invasive-aspergillosis-in-patients-with-underlying-liver-cirrhosis-a-prospective-cohort-study
#5
Juergen Prattes, Martin Hoenigl, Robert Krause, Walter Buzina, Thomas Valentin, Frederike Reischies, Christoph Koidl, Ines Zollner-Schwetz
The aim of this study was to determine the prevalence of invasive aspergillosis (IA) in patients with liver cirrhosis and the performance of serum galactomannan (GM) screening. Patients with decompensated liver cirrhosis and patients with compensated liver cirrhosis presenting with fever and/or respiratory symptoms were prospectively enrolled. All patients were screened by serum GM twice weekly irrespective of clinical signs and symptoms. Positive serum GM triggered work-up consisting of chest computed tomography and in case of pathological findings bronchoscopy...
April 20, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28419364/examination-of-cryptococcal-glucuronoxylomannan-antigen-in-bronchoalveolar-lavage-fluid-for-diagnosing-pulmonary-cryptococcosis-in-hiv-negative-patients
#6
Kazuhiro Oshima, Takahiro Takazono, Tomomi Saijo, Masato Tashiro, Shintaro Kurihara, Kazuko Yamamoto, Yoshifumi Imamura, Taiga Miyazaki, Misuzu Tsukamoto, Katsunori Yanagihara, Hiroshi Mukae, Shigeru Kohno, Koichi Izumikawa
We clarified the performance of a cryptococcal glucuronoxylomannan (GXM) antigen test using bronchoalveolar lavage fluid (BALF) samples, in an HIV-negative Japanese population. Between March 2008 and December 2014, we examined cryptococcal GXM antigens in both serum and BALF specimens from 429 cases at Nagasaki University hospital. The diagnoses, underlying diseases, chest computed tomography findings, and cryptococcal GXM antigen test results were retrospectively investigated. Twenty-three patients were confirmed to have pulmonary cryptococcosis, another six were clinically diagnosed with cryptococcosis because they were seropositive for the GXM antigen, and five possible cryptococcosis cases had BALF samples that were positive for the GXM antigen and serum samples that were negative...
April 17, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28419352/dermatophytes-and-dermatophytosis-in-the-eastern-and-southern-parts-of-africa
#7
E I Nweze, I E Eke
Dermatophytosis is currently a disease of global importance and a public health burden. It is caused by dermatophytes, which attack and grow on dead animal keratin. Dermatophytes belong to three genera, namely, Epidermophyton, Microsporum, and Trichophyton. The predominant clinical forms and causative agents vary from one region of the world to another. Poor socioeconomic status, high population densities, and poor sanitary conditions are some of the factors responsible for the high prevalence of dermatophytosis in many developing countries, which include countries in southern and eastern Africa, the focus of this review...
April 17, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28379569/one-health-pathogens-in-the-aspergillus-viridinutans-complex
#8
Jessica J Talbot, Vanessa R Barrs
Cryptic species in Aspergillus section Fumigati are increasingly recognised as pathogens in humans and animals. The A. viridinutans complex (AVC) has recently expanded to comprise 10 species, of which six are known to be pathogenic, including A. udagawae, A. felis, A. pseudofelis, A. parafelis, A. pseudoviridinutans, and A. wyomingensis. They cause locally invasive and disseminated invasive disease syndromes, including chronic pulmonary aspergillosis and invasive aspergillosis in humans, invasive fungal rhinosinusitis in cats, and disseminated invasive aspergillosis in dogs...
March 31, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28371911/molecular-epidemiology-of-a-malassezia-pachydermatis-neonatal-unit-outbreak
#9
Amin Ilahi, Inès Hadrich, Sabrina Goudjil, Guy Kongolo, Christèle Chazal, André Léké, Ali Ayadi, Taieb Chouaki, Stéphane Ranque
The non-lipid-dependent yeast Malassezia pachydermatis is predominantly zoophilic but occasionally colonizes the human skin. This yeast caused an outbreak in a neonatal iIntensive care unit (NICU). This study aimed to describe the molecular epidemiology of this M. pachydermatis outbreak. All the M. pachydermatis isolates collected at a French University Hospital from January 2012 to April 2013 were included in the study. M. pachydermatis isolates, sampled from various biological samples sites in 25 patients, were identified via MALDI-TOF mass spectrometry and typed using intergenic-spacer 1 (IGS1) nucleotide sequence polymorphisms analysis...
March 24, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28371902/antifungal-efficacy-of-f10sc-veterinary-disinfectant-against-batrachochytrium-dendrobatidis
#10
M S de Jong, R van Dyk, C Weldon
The Infectious disease chytridiomycosis, which is caused by the fungal pathogen Batrachochytrium dendrobatidis, has been identified as one of the most important drivers of amphibian declines and extinction. In vitro B. dendrobatidis is susceptible to a range of disinfectants, but not all have been tested on animals and some that have been proven effective have harmful side effects on the surrounding environment or the animals being treated. We tested the efficacy of F10SC veterinary disinfectant to treat B...
March 24, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28371838/evaluation-of-the-1-3-%C3%AE-d-glucan-assay-for-the-diagnosis-of-neonatal-invasive-yeast-infections
#11
Marjorie Cornu, Sabrina Goudjil, Guy Kongolo, André Leke, Daniel Poulain, Taieb Chouaki, Boualem Sendid
Most newborns in the neonatal intensive care unit (NICU) are premature and at risk of invasive fungal infections (IFIs). Invasive yeast infections (IYIs) are the most common fungal infections in this population. These infections are difficult to diagnose because symptoms are nonspecific, and the sensitivity of blood cultures is low. The serum (1,3)-β-D-glucan (BDG) assay provides a reliable marker for the diagnosis of IFIs in adults with haematological malignancies. We assessed the diagnostic performance of this test in neonatal IYIs and its contribution to the monitoring of antifungal treatment...
March 24, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28340200/cytokines-profile-in-immunocompetent-mice-during-trichosporon-asahii-infection
#12
Alexandra M Montoya, Gloria M González, Azalia M Martinez-Castilla, Sonia A Aguilar, Moises A Franco-Molina, Erika Coronado-Cerda, Adrián G Rosas-Taraco
Trichosporon asahii is an opportunistic yeastlike fungus commonly associated with systemic infections in immunocompromised patients. Neutropenia is recognized as the main risk factor in infections by T. asahii; however, little is known about the cytokine response during trichosporonosis. Here, we evaluated systemic and local cytokine production and histological damage in immunocompetent mice during systemic infection with T. asahii. We found a significant increased presence of G-CSF, TNF-α, IFN-γ, and IL-6 in sera samples...
March 15, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28340215/development-of-enzyme-immunoassays-elisa-and-western-blot-for-the-serological-diagnosis-of-dermatophytosis-in-symptomatic-and-asymptomatic-cats
#13
Aline Elisa Santana, Carlos Pelleschi Taborda, Julia So Severo, Glauce Mary Gomes Rittner, Julian Esteban Muñoz, Carlos Eduardo Larsson, Carlos Eduardo Larsson
Dermatophytosis is the most common fungal infection in cats worldwide and plays an important role in both animal and human health due to their high zoonotic potential. Effective screening is a strong preventive measure and the fungal culture is quite useful but requires full laboratorial experience and it takes a long time to obtain the result. A rapid and accurate screening test for dermatophytosis in cats is crucial for the effective control of disease outbreaks. The aim of this study was to develop and evaluate the diagnostic efficacy of enzyme immunoassays (ELISA and Western blot [WB]) for the rapid and precise diagnosis of dermatophytosis in cats...
March 11, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28340175/funresdb-a-web-resource-for-genotypic-susceptibility-testing-of-aspergillus-fumigatus
#14
Michael Weber, Jonas Schaer, Grit Walther, Kerstin Kaerger, Jörg Steinmann, Peter-Michael Rath, Birgit Spiess, Dieter Buchheidt, Axel Hamprecht, Oliver Kurzai
Therapy of invasive aspergillosis is becoming more difficult due to the emergence of azole resistance in Aspergillus fumigatus. A majority of resistant strains carries mutations in the CYP51A gene. Due to a lack of sensitivity of culture-based methods, molecular detection of A. fumigatus has become an important diagnostic tool. We set up the database FunResDB (www.nrz-myk.de/funresdb) to gather all available information about CYP51A-dependent azole resistance from published literature. In summary, the screening resulted in 79 CYP51A variants, which are linked to 59 nonsynonymous mutations...
March 11, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28340187/biofilm-adherence-and-hydrophobicity-as-virulence-factors-in-malassezia-furfur
#15
Letizia Angiolella, Claudia Leone, Florencia Rojas, Javier Mussin, María de Los Angeles Sosa, Gustavo Giusiano
Malassezia species are natural inhabitants of the healthy skin. However, under certain conditions, they may cause or exacerbate several skin diseases. The ability of this fungus to colonize or infect is determined by complex interactions between the fungal cell and its virulence factors. This study aims to evaluate "in vitro" the hydrophobicity levels, the adherence on a plastic surface and the biofilm formation of 16 clinical isolates of Malassezia furfur. Cellular surface hydrophobicity (CSH) levels were determined by two-phase system...
March 9, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28340159/detection-of-polish-clinical-aspergillus-fumigatus-isolates-resistant-to-triazoles
#16
Urszula Nawrot, Ewelina Kurzyk, Maiken Cavling Arendrup, Martyna Mroczynska, Katarzyna Wlodarczyk, Beata Sulik-Tyszka, Marta Wróblewska, Marek Ussowicz, Przemyslaw Zdziarski, Kinga Niewinska, Anna Brillowska-Dabrowska
We studied the presence of triazole resistance of 121 Aspergillus fumigatus clinical isolates collected in two Polish cities, Warsaw and Wrocław, to determine if resistance is emerging in our country. We identified five itraconazole resistant isolates (4.13%) carrying the TR34/L98H alteration in Cyp51A gene, four of which were cross-resistant to posaconazole and one to voriconazole. One isolate was intermediate susceptible to itraconazole and harbored no Cyp51A alterations. The study confirms the presence of azole resistant A...
March 4, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28340117/an-evaluation-of-the-performance-of-the-dynamiker%C3%A2-fungus-1-3-%C3%AE-d-glucan-assay-to-assist-in-the-diagnosis-of-invasive-aspergillosis-invasive-candidiasis-and-pneumocystis-pneumonia
#17
P Lewis White, Jessica S Price, Raquel B Posso, Rosemary A Barnes
Invasive fungal disease (IFD) can be caused by a range of pathogens. Conventional diagnosis has the capacity to detect most causes of IFD, but poor performance limits impact. The introduction of non-culture diagnostics, including the detection of (1-3)-β-D-Glucan (BDG), has shown promising performance for the detection of IFD in variety of clinical settings. Recently, the Dynamiker® Fungus (1-3)-β-D-Glucan assay (D-BDG) was released as an IFD diagnostic test. This article describes an evaluation of the D-BDG assay for the diagnosis of invasive aspergillosis (IA), invasive candidiasis (IC) and Pneumocystis pneumonia (PCP) across several high-risk patient cohorts and provides comparative data with the Associates of Cape Cod Fungitell® and BioRad Platelia™ Aspergillus Ag (GM) assays...
March 3, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28339963/anti-apoptotic-effects-of-decyl-gallate-on-the-induction-of-apoptosis-in-a549-pneumocytes-by-paracoccidioides-brasiliensis-gp43
#18
Thais Bernardi, Julhiany de Fátima da Silva, Juliana Vicentin, Haroldo Cesar de Oliveira, Patricia Akemi Assato, Caroline Maria Marcos, Ana Carolina Alves de Paula E Silva, Rosangela Aparecida Moraes da Silva, Luis Octávio Regasini, Dulce Helena Siqueira Silva, Vanderlan da Silva Bolzani, Ana Marisa Fusco-Almeida, Maria José Soares Mendes-Giannini
Apoptosis is considered an escape mechanism from the host immune system for the fungus Paracoccidioides spp, and it serves as a vehicle for entry into macrophages without stimulating microbicidal activities. Recently, gp43 of P. brasiliensis was demonstrated to be involved in this process. Therefore, as a new therapeutic alternative, it is very important to study compounds that could reduce the modulation of the induction of apoptosis caused by this fungus. Decyl gallate (G14) is a known antifungal compound, and we decided to investigate its anti-apoptotic properties...
March 3, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28339756/molecular-diagnosis-of-pneumocystis-pneumonia-in-dogs
#19
Patrizia Danesi, Silvia Ravagnan, Lynelle R Johnson, Tommaso Furlanello, Adelaide Milani, Patricia Martin, Susan Boyd, Matthew Best, Bradley Galgut, Peter Irwin, Paul J Canfield, Mark B Krockenberger, Catriona Halliday, Wieland Meyer, Richard Malik
Pneumocystis pneumonia (PCP) is a life-threatening fungal disease that can occur in dogs. The aim of this study was to provide a preliminary genetic characterisation of Pneumocystis carinii f.sp.'canis' (P. canis) in dogs and thereby develop a reliable molecular protocol to definitively diagnose canine PCP. We investigated P. canis in a variety of lung specimens from dogs with confirmed or strongly suspected PCP (Group 1, n = 16), dogs with non-PCP lower respiratory tract problems (Group 2, n = 65) and dogs not suspected of having PCP or other lower respiratory diseases (Group 3, n = 11)...
February 23, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28204651/yeasts-from-scarlet-ibises-eudocimus-ruber-a-focus-on-monitoring-the-antifungal-susceptibility-of-candida-famata-and-closely-related-species
#20
Raimunda Sâmia Nogueira Brilhante, Aline Lobão da Silva, Frederico Ozanan Barros Monteiro, Glaucia Morgana de Melo Guedes, Jamille Alencar Sales, Jonathas Sales de Oliveira, José Erisvaldo Maia Junior, Stefânia Araújo Miranda, José Júlio Costa Sidrim, Lucas Pereira de Alencar, Débora Souza Collares Maia Castelo-Branco, Rossana de Aguiar Cordeiro, Waldemiro de Aquino Pereira Neto, Marcos Fábio Gadelha Rocha
No abstract text is available yet for this article.
February 16, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
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