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Mycopathologia

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https://www.readbyqxmd.com/read/29222709/successful-treatment-of-canine-sporotrichosis-with-terbinafine-case-reports-and-literature-review
#1
Paula Gonçalves Viana, Anna Barreto Fernandes Figueiredo, Isabella Dib Ferreira Gremião, Luisa Helena Monteiro de Miranda, Isabela Maria da Silva Antonio, Jéssica Sepulveda Boechat, Ana Caroline de Sá Machado, Manoel Marques Evangelista de Oliveira, Sandro Antonio Pereira
Sporotrichosis occurs worldwide, and the metropolitan region of Rio de Janeiro, Brazil, is a main endemic area, with a large number of human and animal cases in the last 19 years. This mycosis is more frequently described in cats rather than in dogs. There are a limited number of oral antifungal agents for the treatment of sporotrichosis in animals. In this context, the effectiveness of terbinafine in the treatment of sporotrichosis in humans, as well as the promising results of in vitro susceptibility tests, inspired us to use this drug in the therapy of this mycosis in dogs...
December 8, 2017: Mycopathologia
https://www.readbyqxmd.com/read/29214455/cryptococcus-gattii-infection-presenting-as-an-aggressive-lung-mass
#2
Shuwei Zheng, Thuan Tong Tan, Jaime Mei Fong Chien
Cryptococcus gattii is an endemic fungus predominantly isolated in the tropical and subtropical regions, causing predominantly pulmonary disease with a predilection for the central nervous system. Herein, we report a case of rapidly progressing C. gattii pneumonia in an immune-deficient but virologically suppressed host with underlying human immunodeficiency viral (HIV) infection, exhibiting various fungal morphologies from bronchoalveolar lavage (BAL) cytological specimens. A 51-year-old Chinese male with known HIV disease was admitted to the Singapore General Hospital for evaluation of functional decline, febrile episodes, and a left hilar mass on chest radiograph...
December 6, 2017: Mycopathologia
https://www.readbyqxmd.com/read/29196924/cutaneotrichosporon-trichosporon-debeurmannianum-a-rare-yeast-isolated-from-blood-and-urine-samples
#3
Reema Nath, Pallabi Sargiary, Biswajyoti Borkakoty, Pratap Parida
Cutaneotrichosporon (Trichosporon) debeurmannianum is a rarely isolated yeast from clinical samples. Nine isolates of this yeast were identified from clinical samples within a period of 3 years from June 2012 to May 2015. These isolates were from blood and urine samples sent to a clinical mycology laboratory of a tertiary care hospital in Assam, North East India. Clinically, the patients were diagnosed as septicemia and urinary tract infection. The age of the patients ranged from 2 to 50 years. Identification was made by sequencing the ITS region of ribosomal RNA gene...
December 1, 2017: Mycopathologia
https://www.readbyqxmd.com/read/29196923/mixed-infection-of-respiratory-tract-in-a-dog-caused-by-rhodotorula-mucilaginosa-and-trichosporon-jirovecii-a-case-report
#4
Małgorzata J Biegańska, Magdalena Rzewuska, Iwona Dąbrowska, Bożena Malewska-Biel, Magdalena Ostrzeszewicz, Bożena Dworecka-Kaszak
This report describes the isolation of two environmental fungi: Rhodotorula mucilaginosa and Trichosporon jirovecii accompanied by Pseudomonas aeruginosa and Escherichia coli from a dog with bronchotracheitis. All microorganisms were isolated routinely from a mucopurulent discharge, obtained during bronchoscopy from laryngotracheal area. The initial identification of yeasts was confirmed by API Candida and by molecular analysis of internal transcribed spacer region. Administered antimicrobial treatment with Marbofloxacin and Canizol has brought the improvement in the dogs' health status...
December 1, 2017: Mycopathologia
https://www.readbyqxmd.com/read/29196922/nosocomial-candiduria-in-the-elderly-microbiological-diagnosis
#5
Lidia García-Agudo, Manuel Rodríguez-Iglesias, Rafael Carranza-González
Candiduria is associated with high morbidity, mortality, and long hospitalization, involving high costs for the healthcare system. The use of increasingly aggressive treatments has prolonged the lives of patients susceptible to candiduria, namely the immunosuppressed, the premature, and the elderly. Our objective was to evaluate the incidence of nosocomial candiduria and the implicated species in hospitalized patients aged over 80 years old from three Spanish centers during 2012 and 2013. Urine samples received from these patients were cultured and analyzed by flow cytometry in search of leukocyturia, hematuria, proteinuria, and microbial nitrate reductase activity...
December 1, 2017: Mycopathologia
https://www.readbyqxmd.com/read/29168073/fungus-specific-cd4-t-cells-as-specific-sensors-for-identification-of-pulmonary-fungal-infections
#6
Alexander Scheffold, Carsten Schwarz, Petra Bacher
Patients with cystic fibrosis (CF) suffer from chronic lung infections, caused by bacterial, viral or fungal pathogens, which determine morbidity and mortality. The contribution of individual pathogens to chronic disease and acute lung exacerbations is often difficult to determine due to the complex composition of the lung microbiome in CF. In particular, the relevance of fungal pathogens in CF airways remains poorly understood due to limitations of current diagnostics to identify the presence of fungal pathogens and to resolve the individual host-pathogen interaction status...
November 22, 2017: Mycopathologia
https://www.readbyqxmd.com/read/29164434/isolated-cutaneous-granuloma-caused-by-candida-glabrata-a-rare-case-report-and-literature-review
#7
REVIEW
Yibin Fan, Weili Pan, Guizhen Wang, Youming Huang, Yali Li, Wei Fang, Xiaohua Tao
The incidence of candidiasis due to non-albicans Candida species (especially Candida glabrata) has significantly increased in recent decades. Candida glabrata often invades immunocompromised hosts and causes systemic or mucosal infections, whereas cutaneous infections are rarely reported. We present a rare case of cutaneous infection caused by C. glabrata and review all similar cases available in the PubMed database. A patient was admitted to the hospital with a 2-month history of a plaque on the face. Histopathological examination displayed typical infectious granulomas in the deep dermis, and the pathogen was finally confirmed as C...
November 22, 2017: Mycopathologia
https://www.readbyqxmd.com/read/29164433/distal-lateral-subungual-onychomycosis-owing-to-tritirachium-oryzae-a-bystander-or-invader
#8
Hari Pankaj Vanam, P Narsimha Rao, Kalyani Mohanram, Prakash Peralam Yegneswaran, Shiva Prakash Mandya Rudramurthy
The genus Tritirachium is a mitosporic fungus which inhabits in soil and decaying plant material and also a notable insect pathogen. Human infections with Tritirachium species though rare were previously reported to cause corneal ulcers, otomycosis, onychomycosis, and dermatomycosis of the scalp and hence may be considered as a potential pathogen. Here we report a case of distal lateral subungual onychomycosis involving right great toenail in a 22-year-old female, wherein direct potassium hydroxide preparations, fungal cultures, and molecular sequencing of the isolate established Tritirachium oryzae as the etiological agent...
November 21, 2017: Mycopathologia
https://www.readbyqxmd.com/read/29159660/opinion-paracoccidioidomycosis-and-hiv-immune-recovery-inflammatory-syndrome
#9
Renata Buccheri, Gil Benard
Two distinct patterns of immune recovery inflammatory syndrome (IRIS) are recognized, paradoxical and unmasking IRIS. Here we raise some concerns regarding the first case of neuroPCM-IRIS published to date, as recently proposed by Almeida and Roza (Mycopathologia 177:137-141, 2017) for a patient originally described by Silva-Vergara et al. (Mycopathologia 182:393-396, 2014), taking in account the different case definitions for IRIS and the cases of neuroparacoccidioidomycosis already described in the literature...
November 20, 2017: Mycopathologia
https://www.readbyqxmd.com/read/29147867/population-structure-of-candida-parapsilosis-no-genetic-difference-between-french-and-urugayan-isolates-using-microsatellite-length-polymorphism
#10
Marie Desnos-Ollivier, Victoria Bórmida, Philippe Poirier, Céline Nourrisson, Dinorah Pan, Stéphane Bretagne, Andrès Puime, Françoise Dromer
Candida parapsilosis is a human commensal yeast, frequently involved in infection worldwide and especially in neonates. It is the second species responsible for bloodstream infections in Uruguay and the third species in France. We were interested in knowing whether the population structure of isolates responsible for candidemia in France and in Uruguay was different. Genotyping methods based on microsatellite length polymorphism (MLP) have been described and are especially used for investigation of local outbreaks...
November 16, 2017: Mycopathologia
https://www.readbyqxmd.com/read/29147866/a-review-of-onychomycosis-due-to-aspergillus-species
#11
REVIEW
Felix Bongomin, C R Batac, Malcolm D Richardson, David W Denning
Aspergillus spp. are emerging causative agents of non-dermatophyte mould onychomycosis (NDMO). New Aspergillus spp. have recently been described to cause nail infections. The following criteria are required to diagnose onychomycosis due to Aspergillus spp.: (1) positive direct microscopy and (2) repeated culture or molecular detection of Aspergillus spp., provided no dermatophyte was isolated. A review of 42 epidemiological studies showed that onychomycosis due to Aspergillus spp. varies between < 1 and 35% of all cases of onychomycosis in the general population and higher among diabetic populations accounting for up to 71% and the elderly; it is very uncommon among children and adolescence...
November 16, 2017: Mycopathologia
https://www.readbyqxmd.com/read/29128933/proven-invasive-pulmonary-aspergillosis-in-stem-cell-transplant-recipient-due-to-aspergillus-sublatus-a-cryptic-species-of-a-nidulans
#12
Vanda Chrenkova, Vit Hubka, Petr Cetkovsky, Michal Kouba, Barbora Weinbergerova, Pavlina Lyskova, Ludmila Hornofova, Petr Hubacek
Invasive fungal disease represents one of the severe complications in haematopoietic stem cell transplant recipients. We describe a case of a patient treated for relapse of chronic lymphoblastic leukaemia 6 years after HSCT. The patient was treated for invasive pulmonary aspergillosis but died 3 months later from multiple organ failures consisting of haemorrhagic necrotizing fungal pneumonia, refractory chronic hepatic graft versus host disease and cytomegalovirus hepatitis. Autopsy samples revealed histopathological evidence of fungal hyphae and an unusual Aspergillus nidulans-like species was isolated in pure culture...
November 11, 2017: Mycopathologia
https://www.readbyqxmd.com/read/29128932/atomic-force-microscopy-a-promising-tool-for-deciphering-the-pathogenic-mechanisms-of-fungi-in-cystic-fibrosis
#13
Stéphane Cuenot, Jean-Philippe Bouchara
During the past decades, atomic force microscopy (AFM) has emerged as a powerful tool in microbiology. Although most of the works concerned bacteria, AFM also permitted major breakthroughs in the understanding of physiology and pathogenic mechanisms of some fungal species associated with cystic fibrosis. Complementary to electron microscopies, AFM offers unprecedented insights to visualize the cell wall architecture and components through three-dimensional imaging with nanometer resolution and to follow their dynamic changes during cell growth and division or following the exposure to drugs and chemicals...
November 11, 2017: Mycopathologia
https://www.readbyqxmd.com/read/29098487/organization-of-patient-management-and-fungal-epidemiology-in-cystic-fibrosis
#14
Carsten Schwarz, Jean-Philippe Bouchara, Walter Buzina, Vanda Chrenkova, Hanna Dmeńska, Elia Gomez Garcia de la Pedrosa, Rafael Cantón, Ersilia Fiscarelli, Yohann Le Govic, Nahid Kondori, Tadeja Matos, Ewa Romanowska, Stefan Ziesing, Ludwig Sedlacek
The achievement of a better life for cystic fibrosis (CF) patients is mainly caused by a better management and infection control over the last three decades. Herein, we want to summarize the cornerstones for an effective management of CF patients and to give an overview of the knowledge about the fungal epidemiology in this clinical context in Europe. Data from a retrospective analysis encompassing 66,616 samples from 3235 CF patients followed-up in 9 CF centers from different European countries are shown.
November 3, 2017: Mycopathologia
https://www.readbyqxmd.com/read/29094263/exophiala-dermatitidis-revealing-cystic-fibrosis-in-adult-patients-with-chronic-pulmonary-disease
#15
Frédéric Grenouillet, Bernard Cimon, Heloise Pana-Katatali, Christine Person, Marie Gainet-Brun, Marie-Claire Malinge, Yohann Le Govic, Bénédicte Richaud-Thiriez, Jean-Philippe Bouchara
Cystic fibrosis (CF) is a genetic inherited disease due to mutations in the gene cystic fibrosis transmembrane conductance regulator (CFTR). Because of the huge diversity of CFTR mutations, the CF phenotypes are highly heterogeneous, varying from typical to mild form of CF, also called atypical CF. These atypical features are more frequently diagnosed at adolescence or adulthood, and among clinical signs and symptoms leading to suspect a mild form of CF, colonization or infection of the respiratory tract due to well-known CF pathogens should be a warning signal...
November 1, 2017: Mycopathologia
https://www.readbyqxmd.com/read/29086143/case-series-report-of-the-first-two-human-indigenous-cases-of-cryptococcus-gattii-infection-in-eastern-canada
#16
Jessica St-Pierre, Philippe J Dufresne, Alex Carignan, Émilie Lévesque, Francis Bernard, Jean Longtin, Louiselle LeBlanc
We report the two first cases of human C. gattii meningoencephalitis acquired on the Canadian east coast, from the province of Quebec. Unlike C. neoformans, C. gattii is not known to have an established ecological niche on the North American east coast. C. gattii has recently been responsible for major outbreaks in British Columbia, Canada, and in the American pacific northwest. However, no human cases acquired in other Canadian provinces have been reported to our knowledge. The source of acquisition remains unclear for both patients but since neither had traveled outside of the province of Quebec, we discuss the possibilities of environmental and animal-associated acquisition, as well as the possible established endemicity in new areas...
October 30, 2017: Mycopathologia
https://www.readbyqxmd.com/read/29086142/successful-treatment-by-surgery-of-a-primary-cutaneous-mucormycosis-caused-by-mucor-irregularis
#17
Guan-Zhao Liang, Wen-Qi Xu, Xiao-Li Zheng, Huan Mei, Gui-Xia Lv, Yong-Nian Shen, Dong-Mei Li, Wei-da Liu
We report a case of primary cutaneous mucormycosis caused by Mucor irregularis. A 66-year-old man was presented to our hospital with a history of gradually enlarging plaque on the right leg for about a year. The identification of pathogen based on the fungus morphology and DNA sequencing revealed M. irregularis as the responsible fungus for skin lesion. The lesion was removed incidentally by a surgery procedure, and no recrudescence was seen during a follow-up of 24-month observation.
October 30, 2017: Mycopathologia
https://www.readbyqxmd.com/read/29086141/effects-of-disruption-of-pmc1-in-the-tfp1%C3%A2-%C3%A2-mutant-on-calcium-homeostasis-oxidative-and-osmotic-stress-resistance-in-candida-albicans
#18
Chang Jia, Kai Zhang, Dan Zhang, Qilin Yu, Chenpeng Xiao, Yijie Dong, Maoping Chu, Shuangwei Zou, Mingchun Li
The vacuolar-type H(+)-ATPase (V-ATPase) is essential for many cell processes. Our previous study has demonstrated that Tfp1 is a putative subunit of V-ATPase, loss of which causes disorders in calcium homeostasis and decreased resistance to oxidative stress. In this study, we found that further deletion of PMC1, a vacuolar calcium pump, in tfp1∆/∆ mutant led to more severe dysregulation of calcium homeostasis. Besides, the tfp1∆/∆pmc1∆/∆ mutant was more sensitive to H2O2 and had a higher ROS level...
October 30, 2017: Mycopathologia
https://www.readbyqxmd.com/read/29075960/a-case-of-fungus-ball-type-maxillary-sinusitis-due-to-penicillium-roqueforti
#19
T Radulesco, A Varoquaux, S Ranque, P Dessi, J Michel, C Cassagne
The Penicillium genera, encompassing about 225 different species of fungi, are naturally present in the environment. These genera are poorly linked to human disease, except for Penicillium marneffei causing septicemia in immunocompromised hosts. Thus, Penicillium species recovered from respiratory tract samples are often considered as inhaled contaminants in the clinical laboratory. However, we report here a case of fungal maxillary sinusitis due to Penicillium roqueforti diagnosed in a 40-year-old female, a teacher, complaining of moderate pain for months in the maxillary sinus and chronic posterior rhinorrhea...
October 26, 2017: Mycopathologia
https://www.readbyqxmd.com/read/29067631/dermatomycoses-due-to-nannizzia-praecox-formerly-microsporum-praecox-in-germany-case-reports-and-review-of-the-literature
#20
REVIEW
Silke Uhrlaß, Peter Mayser, Roman Schwarz, Daniela Koch, Constanze Krüger, Irene Korfmann, Pietro Nenoff
Nannizzia praecox, formerly known as Microsporum praecox, is a geophilic dermatophyte. Up to now 31 cases of human tinea have been reported in the literature, most of them with an inflammatory course. Three recent cases diagnosed in Germany within 1 year suggest that the fungus might be a more common cause of human dermatophytosis than reported so far. This might be based on the fact that N. praecox is often found in an equine environment and that horse riding is becoming more popular recently.
October 24, 2017: Mycopathologia
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