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Revista Iberoamericana de Micología

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https://www.readbyqxmd.com/read/28215482/enzymatic-characterization-of-clinical-and-environmental-cryptococcus-neoformans-strains-isolated-in-italy
#1
Gabriella Pini, Elisabetta Faggi, Enza Campisi
BACKGROUND: Cryptococcus neoformans is an encapsulated yeast causing mainly opportunistic infections. The virulence factors involved in cryptococcosis pathogenesis include the presence and the size of the polysaccharide capsule, the production of melanin by phenoloxidase, the growth at 37°C and the enzyme secretion like proteinase, phospholipase and urease. Many other enzymes are secreted by C. neoformans but their role in the fungus virulence is not yet known. AIMS: In order to investigate this topic, we compared the phospholipase production between strains from patients and from bird droppings, and we examined its relationship to phenoloxidase production...
February 16, 2017: Revista Iberoamericana de Micología
https://www.readbyqxmd.com/read/28214276/-in-vitro-antifungal-activity-of-azoles-and-amphotericin-b-against-malassezia-furfur-by-the-clsi-m27-a3-microdilution-and-etest-%C3%A2-methods
#2
Juan Camilo Galvis-Marín, María Ximena Rodríguez-Bocanegra, Adriana Del Pilar Pulido-Villamarín, Rubiela Castañeda-Salazar, Adriana Marcela Celis-Ramírez, Melva Yomary Linares-Linares
BACKGROUND: Malassezia furfur is a human skin commensal yeast that can cause skin and opportunistic systemic infections. Given its lipid dependant status, the reference methods established by the Clinical and Laboratory Standards Institute (CLSI) to evaluate antifungal susceptibility in yeasts are not applicable. AIMS: To evaluate the in vitro susceptibility of M. furfur isolates from infections in humans to antifungals of clinical use. METHODS: The susceptibility profile to amphotericin B, itraconazole, ketoconazole and voriconazole of 20 isolates of M...
February 14, 2017: Revista Iberoamericana de Micología
https://www.readbyqxmd.com/read/28214275/detection-of-pneumocystis-jirovecii-by-nested-pcr-in-hiv-negative-patients-with-pulmonary-disease
#3
Cristina Rodrigues Santos, Ângela M de Assis, Edson A Luz, Luzia Lyra, Ivan F Toro, José Claudio C Seabra, Dira H Daldin, Tathiane U Marcalto, Marcos T Galasso, Ronaldo F Macedo, Angélica Z Schreiber, Francisco H Aoki
BACKGROUND: Nested PCR can be used to determine the status of Pneumocystis jirovecii infection in other lung diseases. AIMS: This study sought to detect a target DNA fragment (mitochondrial large subunit rRNA or mtL SUrRNA) of P. jirovecii in patients with lung disease who underwent bronchoscopy with collection of bronchoalveolar lavage (BAL). METHODS: The results from toluidine blue staining were compared with those obtained using molecular methods that included an "in house" DNA extraction procedure, PCR and nested PCR...
February 14, 2017: Revista Iberoamericana de Micología
https://www.readbyqxmd.com/read/28214274/intra-abdominal-fungal-pseudomycetoma-in-two-cats
#4
Matheus V Bianchi, Cláudio J M Laisse, Thainã P Vargas, Flademir Wouters, Fabiana M Boabaid, Saulo P Pavarini, Laerte Ferreiro, David Driemeier
BACKGROUND: Pseudomycetomas are deep cutaneous to subcutaneous lesions caused by Microsporum canis mainly described in Persian cats, with few reports of intra-abdominal location. This report describes the clinical signs and lesions of intra-abdominal pseudomycetomas caused by M. canis in two Persian cats. CASE REPORT: Two Persian cats with a history of previous laparotomy (ovariohysterectomy and nephrostomy) and fecal impaction were examined. Cat #1 was euthanized and subjected to necropsy, histopathology and mycological evaluation...
February 14, 2017: Revista Iberoamericana de Micología
https://www.readbyqxmd.com/read/28214273/candidaemia-due-to-candida-parapsilosis-species-complex-at-a-hospital-in-brazil-clinical-characteristics-and-antifungal-susceptibility-profile
#5
Débora de Souza Olartechea de Alencar, Rosianne Assis de Sousa Tsujisaki, Fernanda Luiza Espinosa Spositto, Maína de Oliveira Nunes, Adriana Araújo de Almeida, Marilena Dos Anjos Martins, Marcia de Souza Carvalho Melhem, Marilene Rodrigues Chang
BACKGROUND: Recent decades have seen a global emergence of candidaemia caused by non-Candida albicans Candida species, particularly the Candida parapsilosis complex. AIMS: To evaluate the clinical features and antifungal susceptibility profiles of isolates belonging to the C. parapsilosis species complex in patients with candidaemia in a midwestern Brazilian tertiary-care teaching hospital. METHODS: Yeast identification was performed using an automated Vitek 2 Compact system...
February 14, 2017: Revista Iberoamericana de Micología
https://www.readbyqxmd.com/read/28214272/fungal-monitoring-of-the-indoor-air-of-the-museo-de-la-plata-herbarium-argentina
#6
Andrea C Mallo, Lorena A Elíades, Daniela S Nitiu, Mario C N Saparrat
BACKGROUND: Biological agents, such as fungal spores in the air in places where scientific collections are stored, can attack and deteriorate them. AIMS: The aim of this study was to gather information on the indoor air quality of the Herbarium of Vascular Plants of the Museo de Ciencias Naturales de La Plata, Argentina, in relation to fungal propagules and inert particles. METHODS: This study was made using a volumetric system and two complementary sampling methods: (1) a non-viable method for direct evaluation, and (2) a viable method by culture for viable fungal propagules...
February 14, 2017: Revista Iberoamericana de Micología
https://www.readbyqxmd.com/read/28214271/rapid-detection-of-cryptococcus-gattii-sensu-lato-using-gold-nanoparticles
#7
LETTER
Fernanda H Maruyama, Daphine A J de Paula, Olivia C Favalessa, Rosane C Hahn, Paula G Cezarino, Janaína M A Rosa, Luciano Nakazato, Valéria Dutra
No abstract text is available yet for this article.
February 14, 2017: Revista Iberoamericana de Micología
https://www.readbyqxmd.com/read/28214270/-identification-of-yeast-clinical-isolates-in-vaginal-discharge-from-women-attending-public-health-clinics-in-le%C3%A3-n-nicaragua
#8
LETTER
Rosa Moreno, William Morales
No abstract text is available yet for this article.
February 14, 2017: Revista Iberoamericana de Micología
https://www.readbyqxmd.com/read/28169110/-role-of-g-protein-alpha-sub-units-in-the-morphogenic-processes-of-filamentous-ascomycota-fungi
#9
Ramón O García-Rico, Francisco Fierro
The phylum Ascomycota comprises about 75% of all the fungal species described, and includes species of medical, phytosanitary, agricultural, and biotechnological importance. The ability to spread, explore, and colonise new substrates is a feature of critical importance for this group of organisms. In this regard, basic processes such as conidial germination, the extension of hyphae and sporulation, make up the backbone of development in most filamentous fungi. These processes require specialised morphogenic machinery, coordinated and regulated by mechanisms that are still being elucidated...
February 3, 2017: Revista Iberoamericana de Micología
https://www.readbyqxmd.com/read/28169109/evaluation-of-the-infection-process-by-lecanicillium-fungicola-in-agaricus-bisporus-by-scanning-electron-microscopy
#10
Janaira Santana Nunes, Manuela Rocha de Brito, Diego Cunha Zied, Eloisa Aparecida das Graças Leite, Eustáquio Souza Dias, Eduardo Alves
BACKGROUND: Lecanicillium fungicola causes dry bubble disease in Agaricus bisporus mushrooms leading to significant economic losses in commercial production. AIMS: To monitor the infection process of L. fungicola in Brazilian strains of A. bisporus. METHODS: The interaction between the mycelium of L. fungicola (LF.1) and three strains of A. bisporus (ABI 7, ABI 11/14 and ABI 11/21) was studied. Electron microscopy and X-ray microanalyses of vegetative growth and basidiocarp infection were evaluated...
February 3, 2017: Revista Iberoamericana de Micología
https://www.readbyqxmd.com/read/28131716/nosocomial-fungemia-by-candida-auris-first-four-reported-cases-in-continental-europe
#11
Alba Cecilia Ruiz Gaitán, Ana Moret, José Luis López Hontangas, José Miguel Molina, Ana Isabel Aleixandre López, Alicia Hernández Cabezas, Juan Mollar Maseres, Rabat Chouman Arcas, María Dolores Gómez Ruiz, Miguel Ángel Chiveli, Emilia Cantón, Javier Pemán
BACKGROUND: Candida auris is an emerging multidrug-resistant yeast that can cause invasive infections and is associated with high mortality. It is typically resistant to fluconazole and voriconazole and, some cases, also to echinocandins and amphotericin B. This species, phylogenetically related to Candida haemulonii, is frequently misidentified by commercial identification techniques in clinical laboratories; therefore, the real prevalence of C. auris infections may be underestimated...
January 25, 2017: Revista Iberoamericana de Micología
https://www.readbyqxmd.com/read/28109772/trichoderma-virens-as-a-biocontrol-of-toxocara-canis-in-vivo-evaluation
#12
Fernando de Souza Maia Filho, Anelise Oliveira da Silva Fonseca, Beatriz Maroneze Persici, Julia de Souza Silveira, Caroline Quintana Braga, Luciana Pötter, Sônia de Avila Botton, Daniela Isabel Brayer Pereira
BACKGROUND: Microorganisms have been widely studied as biological control agents of parasites of medical and veterinary importance. Coprophagous arthropods, bacteria and fungi are among the different organisms evaluated as potential biological control agents. Nematophagous fungi capture and digest the free forms of nematodes in the soil. Due to its zoonotic potential, Toxocara canis have been brought to the attention of researchers. AIMS: The aim of the present study was to determine whether the administration of embryonated T...
January 18, 2017: Revista Iberoamericana de Micología
https://www.readbyqxmd.com/read/28087293/first-itraconazole-resistant-aspergillus-fumigatus-clinical-isolate-harbouring-a-g54e-substitution-in-cyp51ap-in-south-america
#13
Florencia Leonardelli, Laura Theill, María Elena Nardin, Daiana Macedo, Catiana Dudiuk, Emilce Mendez, Soledad Gamarra, Guillermo Garcia-Effron
BACKGROUND: A 27-year-old male rural worker was admitted with a fungal keratitis due to an injury involving plant detritus. MATERIALS AND METHODS: Specimens were collected for microscopy examination and culture. The isolate was identified by morphological and molecular criteria. Susceptibility testing was performed using CLSI methods. CYP51A gene was PCR amplified and sequenced. RESULTS: An Aspergillus fumigatus strain resistant to itraconazole (MIC>8μg/ml) was isolated...
January 10, 2017: Revista Iberoamericana de Micología
https://www.readbyqxmd.com/read/28081878/-isolated-renal-mucormycosis-in-a-critically-ill-patient
#14
LETTER
Montserrat Vallverdú Vidal, Silvia Iglesias Moles, Meritxell Palomera Fernandez, Mercedes Palomar Martinez
No abstract text is available yet for this article.
January 9, 2017: Revista Iberoamericana de Micología
https://www.readbyqxmd.com/read/28081877/-characterisation-of-cryptococcus-isolates-in-uruguay
#15
LETTER
Mauricio Carbia, Patricia Perera, Zaida Arteta, Elisa Cabeza, Raquel Ballesté, Elbio Gezuele
No abstract text is available yet for this article.
January 9, 2017: Revista Iberoamericana de Micología
https://www.readbyqxmd.com/read/28081876/fluoroquinolone-therapy-could-influence-the-clinical-signs-of-pulmonary-coccidioidomycosis
#16
LETTER
René Agustín Flores-Franco
No abstract text is available yet for this article.
January 9, 2017: Revista Iberoamericana de Micología
https://www.readbyqxmd.com/read/27939578/disseminated-aspergillosis-in-an-immunocompetent-patient-with-detectable-bis-methylthio-gliotoxin-and-negative-galactomannan
#17
Matxalen Vidal-García, Pilar Sáncehez-Chueca, María Pilar Domingo, Carlos Ballester, Lourdes Roc, Isabel Ferrer, María José Revillo, Julián Pardo, Eva María Gálvez, Antonio Rezusta
BACKGROUND: Disseminated invasive aspergillosis is an exceptional finding in immunocompetent hosts. As in immunocompromised patients, it has high mortality rates. Early diagnostic methods are required in order to properly manage the patient. Bis(methylthio)gliotoxin (bmGT) is a novel biomarker, useful in onco-hematological patients. CASE REPORT: A 70-year-old male, with non-insulin dependent type II diabetes mellitus and a past surgery history of aortic valve replacement with coronary by-pass five years ago, was seen in the emergency department with blurred vision...
December 8, 2016: Revista Iberoamericana de Micología
https://www.readbyqxmd.com/read/27864011/molecular-characterization-of-candida-isolates-from-intensive-care-unit-patients-krakow-poland
#18
Marianna Małek, Paulina Paluchowska, Bożena Bogusz, Alicja Budak
BACKGROUND: Over the last decades, Candida species have emerged as important pathogens in immunocompromised patients. Nosocomial infections are mainly of endogenous origin. Nevertheless, some cases of exogenous candidiasis have also been reported. AIMS: The aim of this study was to evaluate the genetic relatedness between Candida albicans, Candida glabrata, Candida tropicalis, Candida krusei and Candida kefyr isolates recovered from intensive care unit (ICU) patients...
November 15, 2016: Revista Iberoamericana de Micología
https://www.readbyqxmd.com/read/27810263/multiplex-pcr-designed-to-differentiate-species-within-the-candida-glabrata-complex
#19
Catiana Dudiuk, Soraya E Morales-López, Virginia Podesta, Daiana Macedo, Florencia Leonardelli, Roxana G Vitale, María E Tosello, Matías S Cabeza, Marisa Biasoli, Soledad Gamarra, Guillermo Garcia-Effron
BACKGROUND: No phenotypic methods are available to unequivocally differentiate species within the Candida glabrata complex. AIMS: To develop a new multiplex PCR method to differentiate between the three species of the C. glabrata species complex, as well as using it to study a C. glabrata collection to discover strains of the newly described species. METHODS: The method was developed based on the Internal Transcribed Spacer (ITS) sequence differences between the species...
October 31, 2016: Revista Iberoamericana de Micología
https://www.readbyqxmd.com/read/27810262/epidemiology-of-candida-isolates-from-intensive-care-units-in-colombia-from-2010-to-2013
#20
Gabriel Motoa, Juan Sebastián Muñoz, José Oñate, Christian José Pallares, Cristhian Hernández, María Virginia Villegas
BACKGROUND: The frequency of Candida isolates as a cause of hospital infections has risen in recent years, leading to high rates of morbidity and mortality. The knowledge of the epidemiology of those hospital acquired fungal infections is essential to implement an adequate antifungal therapy. AIMS: To describe the epidemiology of Candida infections in Intensive Care Units (ICUs) from a surveillance network in Colombia. METHODS: Information was collected from the microbiology laboratories of 20 tertiary healthcare institutions from 10 Colombian cities using the Whonet® software version 5...
October 31, 2016: Revista Iberoamericana de Micología
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