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https://www.readbyqxmd.com/read/29147866/a-review-of-onychomycosis-due-to-aspergillus-species
#1
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/29120502/necrotizing-microascus-tracheo-bronchitis-in-a-bilateral-lung-transplant-recipient
#2
Olivier Taton, Benjamin Bernier, Isabelle Etienne, Benjamin Bondue, Sophie Lecomte, Christiane Knoop, Frederique Jacob, Isabel Montesinos
Invasive fungal infections are a major cause of mortality among solid organ transplant recipients. Scopulariopsis species and their teleomorph Microascus are molds found in soil and decaying organic matter. We report here the case of a woman who underwent bilateral lung transplantation for severe emphysema. On day 25 after transplantation, endobronchial green-black lesions were detected during routine endoscopy. Endobronchial swabs, biopsies, and broncho-alveolar lavage samples were positive for Microascus cirrosus...
November 9, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/29116676/salvage-therapy-with-topical-posaconazole-in-lung-transplant-recipients-with-invasive-scedosporium-infection
#3
Amparo Solé, Ana A García-Robles, Carlos Jordá, Enrique Cases Viedma, Nuria Mancheño, José Luis Poveda-Andrés, Juan Pablo Reig Mezquida, Javier Pemán
Scedosporium is an important pathogen in cystic fibrosis (CF) and post-transplant, but it rarely causes invasive infection. Treatment remains challenging, particularly due to the inherent resistance to multiple antifungal agents. We present three complicated invasive tracheobronchial and lung Scedosporium apiospermum infections following lung transplant. In two of three cases, the infection was clinically and radiologically cured with frequent cleansing bronchoscopies, combining triazole with terbinafine therapy and nebulized posaconazole...
November 8, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/29110252/risk-of-psoriasis-following-terbinafine-or-itraconazole-treatment-for-onychomycosis-a-population-based-case-control-comparative-study
#4
Hsien-Yi Chiu, Wei-Lun Chang, Tsen-Fang Tsai, Yi-Wen Tsai, Ming-Neng Shiu
INTRODUCTION: Several case studies have reported an association between antifungal drug use and psoriasis risk. OBJECTIVE: The objective of this study was to investigate the association between terbinafine/itraconazole exposure and psoriasis incidence. METHODS: Among patients with onychomycosis in the Taiwan National Health Insurance Research Database, 3831 incident psoriasis cases were identified during 2004-2010 and compared with 3831 age- and sex-matched controls with the same look-back period...
November 6, 2017: Drug Safety: An International Journal of Medical Toxicology and Drug Experience
https://www.readbyqxmd.com/read/29102309/challenges-in-culture-negative-cases-of-madurella-mycetomatis-a-case-report-re-accentuating-pcr-as-an-essential-diagnostic-tool
#5
S K, S Das, D Pandhi, G Rai, M A Ansari, C Gupta, S Haque, S A Dar
Identification of dematiaceous fungi responsible for black-grain mycetoma has remained cumbersome and time consuming for years leading to delayed diagnosis and thereby increased agony to patients. Moreover, difficult morphology of some of these fungi demanding enough expertise for species identification in addition to culture-negativity has often led to misdiagnosis and hence inapt treatment to the patients. We report the identification of Madurella mycetomatis from culture-negative black granules discharged from foot nodular lesions of a 27 years old male using PCR followed by sequencing of the internal transcribed spacer region...
October 25, 2017: Journal de Mycologie Médicale
https://www.readbyqxmd.com/read/29094463/severe-dermatophytosis-in-solid-organ-transplant-recipients-a-french-retrospective-series-and-literature-review
#6
Claire Rouzaud, Olivier Chosidow, Anabelle Brocard, Sylvie Fraitag, Anne Scemla, Dany Anglicheau, Jean-David Bouaziz, Nicolas Dupin, Marie-Elisabeth Bougnoux, Roderick Hay, Olivier Lortholary, Fanny Lanternier
OBJECTIVE: Severe dermatophytosis is described in immunocompromised patients with defective cellular immunity. We report here a large series and a literature review of severe dermatophytosis in solid organ transplant (SOT) recipients. METHOD: The data main source was a national French retrospective study of severe dermatophytosis in SOT recipients between 2010 and 2016. Inclusion criteria were the presence of dermatophytes in skin culture and one severity criteria: dermal invasion by dermatophytes (invasive dermatophytosis) or involvement of at least two body sites or >10% of body surface area (extensive dermatophytosis) RESULTS: Twelve patients were included (8 men, median age of 56 years [range: 33-71])...
November 2, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/29082569/deep-facial-mycosis-due-to-trichophyton-verrucosum-molecular-genetic-identification-of-the-dermatophyte-in-paraffin-embedded-tissue-case-report-and-review-of-the-literature
#7
REVIEW
U Wollina, G Hansel, S Uhrlaß, C Krüger, J Schönlebe, U-C Hipler, P Nenoff
Deep trichophytosis is relatively uncommon. The infection of the bearded area is also known as sycosis barbae or tinea barbae and can be caused by various fungal species, most often zoophilic fungi. We report on an 80-year-old male patient with severe sycosis barbae who had no animal contact and was treated with systemic antibiosis without improvement. Microbial and mycological investigations using swabs from oozing lesions revealed Staphylococcus hemolyticus and Candida parapsilosis. Histology demonstrated fungal elements in hair follicles...
October 30, 2017: Mycoses
https://www.readbyqxmd.com/read/29064123/in-vitro-antifungal-activity-of-amphotericin-b-and-eleven-comparators-against-aspergillus-terreus-species-complex
#8
Afsane Vaezi, Hamed Fakhim, Amir Arastehfar, Tahereh Shokohi, Mohammad T Hedayati, Sadegh Khodavaisy, Ali Rezaei-Matehkolaei, Parisa Badiee, Ferry Hagen, Cornelia Lass-Flörl, Eric Dannaoui, Jacques F Meis, Hamid Badali
Aspergillus terreus infections are difficult to treat because of the intrinsic resistance to amphotericin B, and higher mortality compared to infections caused by other Aspergillus species. The aim of the present study was to determine the in vitro antifungal activity of amphotericin B and eleven comparators against clinical (n = 36) and environmental (n = 45) A. terreus isolates. In vitro antifungal susceptibility was performed using the CLSI M38-A2 procedure. Amphotericin B exhibited the highest MICs (MIC range, 0...
October 24, 2017: Mycoses
https://www.readbyqxmd.com/read/29062309/ph-dependant-antifungal-activity-of-valproic-acid-against-the-human-fungal-pathogen-candida-albicans
#9
Julien Chaillot, Faiza Tebbji, Carlos García, Hugo Wurtele, René Pelletier, Adnane Sellam
Current antifungal drugs suffer from limitations including toxicity, the emergence of resistance and decreased efficacy at low pH that are typical of human vaginal surfaces. Here, we have shown that the antipsychotic drug valproic acid (VPA) exhibited a strong antifungal activity against both sensitive and resistant Candida albicans in pH condition similar to that encountered in vagina. VPA exerted a strong anti-biofilm activity and attenuated damage of vaginal epithelial cells caused by C. albicans. We also showed that VPA synergizes with the allylamine antifungal, Terbinafine...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29050446/management-of-mycoses-in-daily-practice
#10
Lorenzo Drago, Giuseppe Micali, Manuela Papini, Bianca M Piraccini, Stefano Veraldi
The guideline recommendations, albeit founded on thorough reviews of clinically relevant literature data, are often not immediately adaptable to everyday life. Considering the marked heterogeneity of superficial mycoses, each of them requires specific management in a real life context; in all cases diagnostic confirmation is required with microscopic and culture examination. In tinea capitis oral therapy is necessary (minimum six weeks) and should be continued until clinical and, above all, mycological healing...
December 2017: Giornale Italiano di Dermatologia e Venereologia: Organo Ufficiale, Società Italiana di Dermatologia e Sifilografia
https://www.readbyqxmd.com/read/28994000/fungal-olecranon-bursitis-in-an-immunocompetent-patient-by-knoxdaviesia-dimorphospora-sp-nov-case-report-and-review
#11
Marcela Guevara-Suarez, Marta Llaurado, Isabel Pujol, Emilio Mayayo, Adela Martin-Vicente, Josepa Gené
Bursitis is a common medical condition that can occur either with or without infection. We present a case of fungal olecranon bursitis in an immunocompetent individual caused by the new species Knoxdaviesia dimorphospora. It is a dematiaceous filamentous fungus characterized by the production of two different conidia: hyaline and cylindrical, which rise up from phialidic conidiogenous cells located in the upper part of differentiated and unbranched conidiophores, and pale brown and ellipsoidal conidia produced by phialidic conidiogenous cells which are born directly on hyphae...
October 9, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28992315/amphotericin-b-and-terbinafine-but-not-the-azoles-prolong-survival-in-galleria-mellonella-larvae-infected-with-madurella-mycetomatis
#12
Wendy Kloezen, Florianne Parel, Roger Brüggemann, Khalid Asouit, Marilyn Helvert-van Poppel, Ahmed Fahal, Johan Mouton, Wendy van de Sande
Mycetoma is a tropical neglected disease characterized by large subcutaneous lesions in which the causative organisms reside in the form of grains. The most common causative agent is Madurella mycetomatis. Antifungal therapy often fails due to these grains, but to identify novel treatment options has been difficult since grains do not form in vitro. We recently used Galleria mellonella larvae to develop an in vivo grain model. In the current study, we set out to determine the therapeutic efficacy of commonly used antifungal agents in this larval model...
September 14, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28979861/treatment-of-dermatophytosis-in-elderly-children-and-pregnant-women
#13
REVIEW
Subuhi Kaul, Savita Yadav, Sunil Dogra
Dermatophytic infection of the skin and its appendages is a common occurrence. Though usually straightforward, treatment of dermatophytosis becomes notably challenging in certain population groups - pregnant women, children, and elderly. Treatment with topical azoles/allylamines alone is effective in limited cutaneous disease in all three groups. Terbinafine is the preferred oral agent in elderly population for treatment of extensive cutaneous disease and onychomycosis due to its lack of cardiac complications and lower propensity for drug interactions...
September 2017: Indian Dermatology Online Journal
https://www.readbyqxmd.com/read/28962097/the-first-case-of-cutaneous-phaeohyphomycosis-caused-by-bipolaris-spicifera-in-northern-china-a-case-report
#14
Hongfen Ge, Min Pan, Guanzhi Chen, Xinqiao Liu, Tongxin Shi, Furen Zhang
Phaeohyphomycosis (PHM) is a term used to describe any fungus presenting in tissues with pseudohyphae, hyphae, brown yeast-like cells or a combination of these forms. Sinusitis and skin infections are the most common presentation of subcutaneous PHM caused by the fungus Bipolaris spicifera. However, the majority of cases have so far been encountered in tropical climatic zones. The present study documents a case of subcutaneous PHM caused by infection with Bipolaris spicifera in a 56-year-old Chinese man, who presented with plaque papillomatosis on the left foot...
September 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28954534/confirmatory-testing-prior-to-initiating-onychomycosis-therapy-is-cost-effective
#15
Aditya K Gupta, Sarah G Versteeg, Neil H Shear
BACKGROUND: Onychomycosis can be investigated by sampling. Information gleaned includes nail bed involvement, nail plate penetration, fungal viability, and species identification. Testing samples can confirm a diagnosis. While diagnostic testing is considered useful in directing therapy, a substantial number of clinicians do not confirm diagnosis prior to treatment. OBJECTIVES: The aim of this study is to quantify the benefit of confirmatory testing prior to treating toenail onychomycosis...
September 1, 2017: Journal of Cutaneous Medicine and Surgery
https://www.readbyqxmd.com/read/28947778/an-invertebrate-infection-model-for-evaluating-anti-fungal-agents-against-dermatophytosis
#16
Masaki Ishii, Yasuhiko Matsumoto, Tsuyoshi Yamada, Shigeru Abe, Kazuhisa Sekimizu
Animal models of pathogenic infection are needed to evaluate candidate compounds for the development of anti-infectious drugs. Dermatophytes are pathogenic fungi that cause several infectious diseases. We established a silkworm dermatophyte infection model to evaluate anti-fungal drugs. Injection of conidia of the dermatophyte Arthroderma vanbreuseghemii into silkworms was lethal. A. vanbreuseghemii conidia germinated in liquid culture were more potent against silkworms than non-germinated conidia. Germinated conidia of other dermatophytes, Arthroderma benhamiae, Trichophyton rubrum, and Microsporum canis, also killed silkworms...
September 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28940733/in-vitro-biofilms-and-antifungal-susceptibility-of-dermatophyte-and-non-dermatophyte-molds-involved-in-foot-mycosis
#17
Nourchéne Toukabri, Serena Corpologno, Marie-Elisabeth Bougnoux, Dalenda El Euch, Najla Sadfi-Zouaoui, Giovanna Simonetti
BACKGROUND: Tinea pedis and onychomycosis are among the commonest fungal diseases in the world. Dermatophytes and, less frequently, non-dermatophyte molds are etiological agents of foot mycosis and could be able to form biofilms. Fungal biofilm has demonstrated increasing drug resistance OBJECTIVES: This work aims to evaluate in vitro the ability to form biofilm and the susceptibility to antifungal drugs of sessile dermatophytes and non-dermatophyte molds involved in foot mycosis. Methods Thirty-six dermatophytes and non-dermatophyte molds isolated from Tunisian patients with foot mycoses, and identified with MALDI-TOF have been tested...
September 22, 2017: Mycoses
https://www.readbyqxmd.com/read/28882594/terbinafine-is-a-novel-and-selective-activator-of-the-two-pore-domain-potassium-channel-task3
#18
Paul D Wright, Emma L Veale, David McCoull, David C Tickle, Jonathan M Large, Emma Ococks, Gemma Gothard, Catherine Kettleborough, Alistair Mathie, Jeffrey Jerman
Two-pore domain potassium channels (K2Ps) are characterized by their four transmembrane domain and two-pore topology. They carry background (or leak) potassium current in a variety of cell types. Despite a number of important roles there is currently a lack of pharmacological tools with which to further probe K2P function. We have developed a cell-based thallium flux assay, using baculovirus delivered TASK3 (TWIK-related acid-sensitive K(+) channel 3, KCNK9, K2P9.1) with the aim of identifying novel, selective TASK3 activators...
November 4, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28868622/proliferation-inhibition-of-cisplatin-resistant-ovarian-cancer-cells-using-drugs-screened-by-integrating-a-metabolic-model-and-transcriptomic-data
#19
E Motamedian, E Taheri, F Bagheri
OBJECTIVES: If screening to find effective drugs is possible, the inhibition of proliferation using existing drugs can be a practical strategy to control the drug resistance of cancer. Development of a system-oriented strategy to find effective drugs was the main aim of this research. MATERIALS AND METHODS: An algorithm (transcriptional regulated flux balance analysis [TRFBA]) integrating a generic human metabolic model with transcriptomic data was used to identify genes affecting the growth of drug-resistant cancer cells...
September 3, 2017: Cell Proliferation
https://www.readbyqxmd.com/read/28864936/a-case-of-cutaneous-mycosis-caused-by-scedosporium-dehoogii-on-an-immunocompromised-patient
#20
Yuichi Sakata, Fumiaki Taga, Tsuyoshi Ushigami, Kiminobu Takeda, Kazushi Anzawa, Akiko Nishibu, Takashi Mochizuki
This report describes a 77-year-old man with cutaneous mycosis caused by Scedosporium dehoogii while taking oral betamethasone and tacrolimus for the treatment of rheumatoid arthritis. At examination in our clinic, the patient had multiple cystic lesions and nodules with slight tenderness, varying in size up to 4 cm, on his left knee and shin. He had not noticed any traumatic injury at the site of the lesions. Fungal cultures of samples taken from the abscesses, scales, and crusts of the lesions yielded white, later grayish brown, fluffy surfaced colonies...
September 1, 2017: Mycopathologia
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