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Mycoses

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https://www.readbyqxmd.com/read/28205355/trametes-polyzona-an-emerging-filamentous-basidiomycete-in-r%C3%A3-union-island
#1
Alexandre Gauthier, Julien Jaubert, Nicolas Traversier, Jérôme Lemant, Laurent Balu, Dea Garcia-Hermoso, Stephane Welti, Anne Favel, Sandrine Picot, Gautier Hoarau
We describe two serious Trametes polyzona pulmonary infections, which occurred in Réunion Island, in critically ill patients. The identification was performed using sequencing of the internal transcribed spacer region of ribosomal DNA and D1/D2 region of 28S rDNA. In one case, the significance of T. polyzona in the pathological process was certain, proven by histopathological evidence of fungal lung infection. T. polyzona, an emerging filamentous basidiomycete, prevalent in tropical areas, has not been described so far in human infections...
February 16, 2017: Mycoses
https://www.readbyqxmd.com/read/28198097/inibitory-effects-of-linalool-on-fungal-pathogenicity-of-clinical-isolates-of-microsporum-canis-and-microsporum-gypseum
#2
Kaltz V S Silva, Maria I O Lima, Gustavo N Cardoso, Aldeir S Santos, Gezaíldo S Silva, Fillipe O Pereira
In humans worldwide, Microsporum sp. is a frequent agent of dermatophytsosis. When considering the emergence of resistant fungi and the clinical relevance of dermatophytosis, terpene antifungal activity is of great interest. Linalool is a monoterpene alcohol with pharmacological properties. In this study, antifungal in vitro activity of linalool and ketoconazole (as a positive control) were evaluated against clinical isolates of M. canis and M. gypseum. The minimum inhibitory concentration (MIC) and minimum fungicidal concentration (MFC) of each drug were determined by broth microdilution...
February 15, 2017: Mycoses
https://www.readbyqxmd.com/read/28176377/novel-taxa-of-thermally-dimorphic-systemic-pathogens-in-the-ajellomycetaceae-onygenales
#3
Karolina Dukik, Jose F Muñoz, Yanping Jiang, Peiying Feng, Lynne Sigler, J Benjamin Stielow, Joanna Freeke, Azadeh Jamalian, Bert Gerrits van den Ende, Juan G McEwen, Oliver K Clay, Ilan S Schwartz, Nelesh P Govender, Tsidiso G Maphanga, Christina A Cuomo, Leandro F Moreno, Chris Kenyon, Andrew M Borman, Sybren de Hoog
Recent discoveries of novel systemic fungal pathogens with thermally dimorphic yeast-like phases have challenged the current taxonomy of the Ajellomycetaceae, a family currently comprising the genera Blastomyces, Emmonsia, Emmonsiellopsis, Helicocarpus, Histoplasma, Lacazia and Paracoccidioides. Our morphological, phylogenetic and phylogenomic analyses demonstrated species relationships and their specific phenotypes, clarified generic boundaries and provided the first annotated genome assemblies to support the description of two new species...
February 7, 2017: Mycoses
https://www.readbyqxmd.com/read/28150341/invasive-infections-due-to-saprochaete-and-geotrichum-species-report-of-23-cases-from-the-fungiscope-registry
#4
Luisa Durán Graeff, Danila Seidel, Maria J G T Vehreschild, Axel Hamprecht, Anupma Kindo, Zdenek Racil, Judit Demeter, Sybren De Hoog, Ute Aurbach, Maren Ziegler, Hilmar Wisplinghoff, Oliver A Cornely
Saprochaete and Geotrichum spp. are rare emerging fungi causing invasive fungal diseases in immunosuppressed patients and scarce evidence is available for treatment decisions. Among 505 cases of rare IFD from the FungiScope(™) registry, we identified 23 cases of invasive infections caused by these fungi reported from 10 countries over a 12-year period. All cases were adults and previous chemotherapy with associated neutropenia was the most common co-morbidity. Fungaemia was confirmed in 14 (61%) cases and deep organ involvement included lungs, liver, spleen, central nervous system and kidneys...
February 2, 2017: Mycoses
https://www.readbyqxmd.com/read/28144986/a-re-appraisal-of-the-conventional-history-of-antibiosis-and-penicillin
#5
S N Arseculeratne, G Arseculeratne
The popular perception of the history of antibiosis and penicillin is that Alexander Fleming was the sole researcher on penicillin. The literature, however, has documentation of preceding persons who reported definitively on these topics, from the late 19(th) century. Divergent reports on "firsts" in the discovery of antimicrobial activity of Penicillium and on the use of penicillin as a therapeutic agent, are present. This review adds knowledge from diverse sources, and restores historical priorities to the conventional story of Penicillin...
February 1, 2017: Mycoses
https://www.readbyqxmd.com/read/28139861/species-diversity-antifungal-susceptibility-and-phenotypic-and-genotypic-characterisation-of-exophiala-spp-infecting-patients-in-different-medical-centres-in-brazil
#6
Wendy C Silva, Sarah S Gonçalves, Daniel W C L Santos, Ana Carolina B Padovan, Fernando C Bizerra, Analy S A Melo
The Exophiala genus is responsible for many superficial and invasive infections resulting from black fungi. Identification of Exophiala at the species level is based on morphological observations complemented by molecular tests. The aim of this study was to identify 23 clinical isolates of Exophiala spp. and evaluate the antifungal susceptibility to seven different agents. Molecular identification was based on an analysis of ITS region of rDNA using genomic databases. The micromorphology was evaluated by microculture and scanning electron microscopy...
January 31, 2017: Mycoses
https://www.readbyqxmd.com/read/28139856/epidemiological-investigation-of-candida-species-causing-bloodstream-infection-in-paediatric-small-bowel-transplant-recipients
#7
Mallory J Suhr, João Carlos Gomes-Neto, Nabaraj Banjara, Diana F Florescu, David F Mercer, Peter C Iwen, Heather E Hallen-Adams
Small bowel transplantation (SBT) can be a life-saving medical procedure. However, these recipients experience high risk of bloodstream infections caused by Candida. This research aims to characterise the SBT recipient gut microbiota over time following transplantation and investigate the epidemiology of candidaemia in seven paediatric patients. Candida species from the recipients' ileum and bloodstream were identified by internal transcribed spacer sequence and distinguished to strain by multilocus sequence typing and randomly amplified polymorphic DNA...
January 31, 2017: Mycoses
https://www.readbyqxmd.com/read/28139853/aspergillus-sensitisation-in-bidi-smokers-with-and-without-chronic-obstructive-lung-disease
#8
Ritesh Agarwal, Sumita Bhogal, Hansraj Choudhary, Ashutosh N Aggarwal, Inderpaul S Sehgal, Sahajal Dhooria, Digambar Behera, Arunaloke Chakrabarti
Recent studies have described fungal sensitisation in patients with chronic obstructive pulmonary disease (COPD). However, no study has evaluated fungal sensitisation specifically in bidi smokers. Herein, we evaluate the prevalence of Aspergillus sensitisation in bidi smokers. Bidi smokers with and without COPD underwent chest radiography, spirometry, Aspergillus skin test, A. fumigatus precipitins, A. fumigatus-specific IgE and total IgE. Aspergillus sensitisation was defined as the presence of either immediate cutaneous hyperreactivity to Aspergillus antigen or raised A...
January 31, 2017: Mycoses
https://www.readbyqxmd.com/read/28133894/seven-cases-of-saccharomyces-fungaemia-related-to-use-of-probiotics
#9
Ujjwayini Roy, Laxman G Jessani, Shivaprakash M Rudramurthy, Ram Gopalakrishnan, Soma Dutta, Chandrashish Chakravarty, Joseph Jillwin, Arunaloke Chakrabarti
Probiotics are increasingly used in critically ill patients without enough safety data. The aim of the present study was to determine the association of probiotics with Saccharomyces cerevisiae fungaemia. Seven patients with S. cerevisiae fungaemia were reported at two hospitals in India between July 2014 and September 2015. Detailed clinical history of patients was recorded. Besides the seven patient isolates, three probiotics sachets used in those patients and five unrelated clinical isolates were used for association study by Fluorescent amplified fragment length polymorphism (FAFLP)...
January 30, 2017: Mycoses
https://www.readbyqxmd.com/read/28120351/comparative-efficacy-of-topical-application-of-tacrolimus-and-clotrimazole-in-the-treatment-of-pityriasis-versicolor-a-single-blind-randomised-clinical-trial
#10
Mozhdeh Sepaskhah, Maryam Sadat Sadat, Keyvan Pakshir, Zahra Bagheri
BACKGROUND: Pityriasis versicolor (PV) is a common superficial fungal disease. Possibility of emergence of resistant strains to azoles, and difficulty in differentiation of hypopigmented PV and early vitiligo, encouraged us to evaluate the efficacy of topical tacrolimus (a calcineurin inhibitor agent with proven in vitro anti-Malassezia effect) for PV treatment generally and its effect on PV-induced hypopigmentation specifically. OBJECTIVES: To evaluate the efficacy of topical tacrolimus on pityriasis versicolor...
January 25, 2017: Mycoses
https://www.readbyqxmd.com/read/28111800/nomenclatural-notes-on-nadsoniella-and-the-human-opportunist-black-yeast-genus-exophiala
#11
Tarek A A Moussa, Hassan S Al-Zahrani, Naif M S Kadasa, Leandro F Moreno, A H G Gerrits van den Ende, G Sybren de Hoog, Abdullah M S Al-Hatmi
The opportunistic black yeast are particularly known through the genus Exophiala, characterised by annellidic budding cells. However, this phenotype is polyphyletic within the order Chaetothyriales. Seventeen generic names are available in the family Herpotrichiellaceae, one of which is Exophiala. Future taxonomy will be based on molecular phylogeny; each multi-species clade may qualify for one of these names. This paper focuses on the genus Nadsoniella, which is the oldest valid name in the Herpotrichiellaceae...
January 23, 2017: Mycoses
https://www.readbyqxmd.com/read/28101934/detection-of-neonatal-unit-clusters-of-candida-parapsilosis-fungaemia-by-microsatellite-genotyping-results-from-laboratory-based-sentinel-surveillance-south-africa-2009-2010
#12
Rindidzani E Magobo, Serisha D Naicker, Jeannette Wadula, Maphoshane Nchabeleng, Yacoob Coovadia, Anwar Hoosen, Shawn R Lockhart, Nelesh P Govender
Neonatal candidaemia is a common, deadly and costly hospital-associated disease. To determine the genetic diversity of Candida parapsilosis causing fungaemia in South African neonatal intensive care units (NICUs). From February 2009 through to August 2010, cases of candidaemia were reported through laboratory-based surveillance. C. parapsilosis isolates from neonatal cases were submitted for identification by internal transcribed spacer (ITS) region sequencing, antifungal susceptibility testing and microsatellite genotyping...
January 19, 2017: Mycoses
https://www.readbyqxmd.com/read/28101893/the-genus-anthopsis-and-its-phylogenetic-position-in-chaetothyriales
#13
Tarek A A Moussa, Bert H G Gerrits van den Ende, Hassan S Al Zahrani, Naif M S Kadasa, Sybren G de Hoog, Somayeh Dolatabadi
The genus Anthopsis was introduced for a black fungus with peculiar, inverted phialides and triangular conidia. The genus accommodates, in addition to the type species Anthopsis deltoidea, which once was reported as a cause of human phaeohyphomycosis, two further taxa: A. catenata and A. microspora. Current taxonomy is mainly based on microscopic structures of phialides. To assess the phylogenetic position of the genus, sequences of the internal transcribed spacer region and partial LSU rDNA were obtained for Anthopsis spp...
January 18, 2017: Mycoses
https://www.readbyqxmd.com/read/28098391/understanding-the-formidable-nail-barrier-a-review-of-the-nail-microstructure-composition-and-diseases
#14
REVIEW
Sudhir Baswan, Gerald B Kasting, S Kevin Li, Randy Wickett, Brian Adams, Sean Eurich, Ryan Schamper
The topical treatment of nail fungal infections has been a focal point of nail research in the past few decades as it offers a much safer and focused alternative to conventional oral therapy. Although the current focus remains on exploring the ways of enhancing permeation through the formidable nail barrier, the understanding of the nail microstructure and composition is far from complete. This article reviews our current understanding of the nail microstructure, composition and diseases. A few of the parameters affecting the nail permeability and potential causes of the recurrence of fungal nail infection are also discussed...
January 18, 2017: Mycoses
https://www.readbyqxmd.com/read/28066940/comparison-of-two-long-term-gestagen-regimens-in-the-management-of-recurrent-vulvovaginal-candidiasis-a-pilot-study
#15
Jiří Špaček, Jan Kestřánek, Petr Jílek, Daniel Leško, Silvie Plucnarová, Vladimír Buchta
Vulvovaginal candidiasis (VVC) is a hormonal-dependent infection but in contrast to sporadic VVC, therapy of recurrent vulvovaginal candidiasis (RVVC) is still unsolved. Long-term administration of medroxyprogesterone acetate was evaluated for the management of RVVC. Overall, 20 patients were treated with Depo-Provera; 14 patients were treated with Provera. Gestagen therapy was evaluated based on visual analogue scale (VAS), the frequency of attacks, the side effects of gestagens and the consumption of antifungals...
January 9, 2017: Mycoses
https://www.readbyqxmd.com/read/28066933/performance-of-magnetic-resonance-imaging-in-pulmonary-fungal-disease-compared-to-high-resolution-computed-tomography
#16
Ana Sartori, Arthur Souza, Matheus Zanon, Klaus Irion, Edson Marchiori, Guilherme Watte, Bruno Hochhegger
To evaluate the performance of magnetic resonance imaging (MRI) compared to computed tomography (CT) in patients diagnosed with pulmonary mycosis. We prospectively included 21 patients diagnosed with pulmonary mycosis between January 2013 and October 2014. Inclusion criteria were presence of respiratory symptoms, histopathological diagnosis of mycosis and absence of mycosis treatment. Reviewers identified one predominant imaging pattern per patient: nodular, reticular or airspace pattern. Afterwards, all CT findings were analysed separately per lobe and compared to MRI...
January 9, 2017: Mycoses
https://www.readbyqxmd.com/read/27928841/fusarium-species-causing-eumycetoma-report-of-two-cases-and-comprehensive-review-of-the-literature
#17
Abdullah M S Al-Hatmi, Alexandro Bonifaz, Andrés Tirado-Sánchez, Jacques F Meis, G Sybren de Hoog, Sarah A Ahmed
Recently, mycetoma was added to the World Health Organization's list of neglected tropical disease priorities. Fusarium as a genus has been reported to cause eumycetoma, but little is known about the species involved in this infection and their identification. In this study, molecular tools were applied to identify Fusarium agents from human eumycetoma cases. The partial translation elongation factor 1-alpha (TEF-1α) gene was used as diagnostic parameter. Two additional cases of eumycetoma, due to F. keratoplasticum and F...
December 7, 2016: Mycoses
https://www.readbyqxmd.com/read/27910211/comparison-of-serum-concentrations-between-different-dosing-strategies-of-posaconazole-delayed-release-tablet-at-a-large-academic-medical-centre
#18
Sarah Welch, Andrea Pallotta, Catherine Weber, Caitlin Siebenaller, Eric Cober, Elizabeth Neuner
It is unclear if the prophylaxis dose of 300 mg/day is sufficient for achieving serum concentrations targeting the treatment of invasive fungal infections. To evaluate differences between PCZ serum concentrations in patients receiving the DRT vs the OS and in patients receiving higher doses than 300 mg/day of the DRT, a retrospective review was conducted on inpatients who received PCZ for either treatment or prophylaxis. Baseline demographics including comorbid conditions, indication and dose of therapy were collected...
December 1, 2016: Mycoses
https://www.readbyqxmd.com/read/27910191/tintelnotia-a-new-genus-in-phaeosphaeriaceae-harbouring-agents-of-cornea-and-nail-infections-in-humans
#19
S A Ahmed, W Hofmüller, M Seibold, G S de Hoog, H Harak, I Tammer, A D van Diepeningen, W Behrens-Baumann
Phaeosphaeriaceae is a family in the order Pleosporales containing numerous plant pathogens, endophytes, lichenised fungi, and environmental saprobes. A novel genus, Tintelnotia is introduced containing two species, one of which caused an eye infection and several nail infections in humans. All species of Tintelnotia produce conidia in soft pycnidia with a wide ostiole. The generic type species is T. opuntiae causing necrotic spots on cactus plants. The isolates of the human opportunist T. destructans showed variable susceptibility pattern to a panel of common antifungal agents...
December 1, 2016: Mycoses
https://www.readbyqxmd.com/read/27910139/characterization-of-patients-with-chronic-pulmonary-aspergillosis-according-to-the-new-escmid-ers-ecmm-and-idsa-guidelines
#20
Helmut J F Salzer, Jan Heyckendorf, Barbara Kalsdorf, Thierry Rolling, Christoph Lange
Recently, the Infectious Diseases Society of America (IDSA) and the European Society for Clinical Microbiology and Infectious Diseases (ESCMID) in cooperation with the European Respiratory Society (ERS) and the European Confederation of Medical Mycology (ECMM) published guidelines for the diagnosis of chronic pulmonary aspergillosis (CPA). Both guidelines, however, carry significant differences. We retrospectively applied the diagnostic recommendations on a patient cohort of 71 previously diagnosed CPA patients in order to compare both guidelines...
December 1, 2016: Mycoses
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