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https://www.readbyqxmd.com/read/28627008/invasive-trichophyton-rubrum-mimicking-blastomycosis-in-a-patient-with-solid-organ-transplant
#1
Faezeh Talebi-Liasi, Michi M Shinohara
We present a case of tissue invasive Trichophyton rubrum (T. rubrum) histologically mimicking blastomycosis in a patient with kidney transplant on chronic immunosuppression. Invasive dermatophyte infections are rare, and present a diagnostic challenge to the dermatopathologist due to atypical clinical and histopathological presentations.
June 19, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28622851/prevalence-and-zoonotic-risks-of-trichophyton-mentagrophytes-and-cheyletiella-spp-in-guinea-pigs-and-rabbits-in-dutch-pet-shops
#2
P A M Overgaauw, K H A van Avermaete, C A R M Mertens, M Meijer, N J Schoemaker
Young rabbits and guinea pigs are often purchased as pets for children and may be infected with zoonotic skin infections. To assess the risk of acquiring such an infection from rabbits or guinea pigs, this study investigated the prevalence of the fungus Trichophyton mentagrophytes and the fur mite Cheyletiella parasitovorax in asymptomatic rabbits and guinea pigs in Dutch pet shops. In 91 pet shops a total of 213 rabbits and 179 guinea pigs were sampled using the Mackenzie technique and cultured. Clean cultures were examined microscopically and a PCR was performed on at least one sample from each pet shop...
June 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28617823/resource-capture-and-competitive-ability-of-non-pathogenic-pseudogymnoascus-spp-and-p-destructans-the-cause-of-white-nose-syndrome-in-bats
#3
Michael B Wilson, Benjamin W Held, Amanda H Freiborg, Robert A Blanchette, Christine E Salomon
White-nose syndrome (WNS) is a devastating fungal disease that has been causing the mass mortality of hibernating bats in North America since 2006 and is caused by the psychrophilic dermatophyte Pseudogymnoascus destructans. Infected bats shed conidia into hibernaculum sediments and surfaces, but it is unknown if P. destructans can form stable, reproductive populations outside its bat hosts. Previous studies have found non-pathogenic Pseudogymnoascus in bat hibernacula, and these fungi may provide insight into the natural history of P...
2017: PloS One
https://www.readbyqxmd.com/read/28616694/-dermophytes-and-guinea-pigs-an-underestimated-danger
#4
C Kupsch, M Berlin, Y Gräser
BACKGROUND: For several years, an increasing number of human infections, mainly affecting children, with the zoophilic dermatophyte Trichophyton benhamiae has been observed. It is predominantly transmitted by pet guinea pigs. The prevalence of the dermatophyte on guinea pigs which are for sale in pet shops is unknown. OBJECTIVE: Therefore, the aim of this study was to analyze the frequency of T. benhamiae on symptomatic and asymptomatic guinea pigs from pet shops in Berlin...
June 14, 2017: Der Hautarzt; Zeitschrift Für Dermatologie, Venerologie, und Verwandte Gebiete
https://www.readbyqxmd.com/read/28616693/-tinea-barbae-profunda-due-to-trichophyton-mentagrophytes-after-journey-to-thailand-case-report-and-review
#5
REVIEW
G Wendrock-Shiga, D Mechtel, S Uhrlaß, D Koch, C Krüger, P Nenoff
Tinea barbae represents a very rare dermatophytosis. We report on a tinea barbae profunda following a journey to Southeast Asia. After travel to Thailand, a businessman was affected by a foudroyant proceeding abscessing infection of the upper lip and beard area. The initial therapy with oral acyclovir and oral ciprofloxacin, which later was changed to ampicillin plus sulbactam, intravenously, was unsuccessful. In a biopsy sample, histologically, with Grocott-Gomori's methenamine silver stain, fungal mycelium was apparent in the tissue...
June 14, 2017: Der Hautarzt; Zeitschrift Für Dermatologie, Venerologie, und Verwandte Gebiete
https://www.readbyqxmd.com/read/28609764/hemodialysis-and-kidney-transplantation-as-predisposing-conditions-to-onychomycosis
#6
Antonio M S Filho, Carlucci G Ventura, Paulo R Criado, Gilda B Del Negro, Roseli S Freitas, Olinda C Luiz, Mauro C Giudice, Elias D Neto, Gil Benard
BACKGROUND/AIM: Onychomycosis (OM) is one of the commonest superficial fungal infections. Patients undergoing hemodialysis (HD) treatment and kidney transplant recipients (KTR) are considered at risk of contracting fungal infections, but the few published data do not reach the conclusion of whether they are predisposed to OM. This study aimed to determine the prevalence and etiology of OM in these patients and to determine the antifungal susceptibility profile of the isolated fungal species...
June 14, 2017: Nephron
https://www.readbyqxmd.com/read/28597822/fungi-that-infect-humans
#7
Julia R Köhler, Bernhard Hube, Rosana Puccia, Arturo Casadevall, John R Perfect
Fungi must meet four criteria to infect humans: growth at human body temperatures, circumvention or penetration of surface barriers, lysis and absorption of tissue, and resistance to immune defenses, including elevated body temperatures. Morphogenesis between small round, detachable cells and long, connected cells is the mechanism by which fungi solve problems of locomotion around or through host barriers. Secretion of lytic enzymes, and uptake systems for the released nutrients, are necessary if a fungus is to nutritionally utilize human tissue...
June 2017: Microbiology Spectrum
https://www.readbyqxmd.com/read/28594608/etiology-of-onychomycosis-in-patients-turkey
#8
Fatma Pelin Cengiz, Bengu Cevirgen Cemil, Nazan Emiroglu, Anılgülsel Bahalı, Dilek Biyik Ozkaya, Ozlem Su, Nahide Onsun
BACKGROUND: Onychomycosis is the chronic infection of the nails, and it is caused by dermatophytes, Candida, non- dermatophyte molds, Trichosporon genus. METHODS: A retrospective analysis of 225 cases with onychomycosis, diagnosed in a 27-month period at the Department of Dermatoveneorology, Bezmialem Vakif University in Istanbul, and confirmed with culture. RESULTS: The age of patients ranged from 2 to 87 years (41.59 ± 17.61) and females were more commonly affected (120 cases, 53...
June 8, 2017: Journal of the American Podiatric Medical Association
https://www.readbyqxmd.com/read/28588164/diagnosis-of-dermatophytosis-by-conventional-methods-and-comparatative-analysis-of-sabouraud-dextrose-agar-and-dermatophyte-test-medium-for-isolation-of-dermatophytes
#9
S Monwar, M A Hossain, F Boby, H Begum, N Begum
Dermatophytosis is a fungal disease which ranked as one of the most common cutaneous condition in all over the world. The aim of this cross sectional observational study is to identify the etiological agent of dermatophytosis and comparison of Sabouraud dextrose agar (SDA) and Dermatophyte test medium (DTM) for the primary isolation of dermatophytes among the clinically suspected cases of dermatophytosis from the outpatient Department of Dermatology and Venereology, Mymensingh Medical College Hospital from July 2013 to December 2015...
April 2017: Mymensingh Medical Journal: MMJ
https://www.readbyqxmd.com/read/28584753/a-pilot-study-for-the-evaluation-of-pcr-as-a-diagnostic-tool-in-patients-with-suspected-dermatophytoses
#10
Robin Sharma, Samiksha Gupta, Dinesh P Asati, T Karuna, Shashank Purwar, Debasis Biswas
CONTEXT: The conventional diagnostic tools for dermatophytoses suffer from several limitations including low sensitivity, specificity, and long turn-around-time. AIMS: The present study was, therefore, performed to evaluate the performance of a polymerase chain reaction (PCR)-based method for the diagnosis of this condition. SETTINGS AND DESIGN: The study was conducted in the Dermatology outpatient department of a tertiary care teaching hospital in central India over a period of 3 months from July to September 2015...
May 2017: Indian Dermatology Online Journal
https://www.readbyqxmd.com/read/28582544/terbinafine-resistance-conferred-by-multiple-copies-of-the-salicylate-1-monooxygenase-gene-in-trichophyton-rubrum
#11
Hemelin L Santos, Elza A S Lang, Fernando Segato, Antonio Rossi, Nilce M Martinez-Rossi
Resistance to antifungals is a leading concern in the treatment of human mycoses. We demonstrate that the salA gene, encoding salicylate 1-monooxygenase, is involved in resistance of the dermatophyte Trichophyton rubrum to terbinafine, one of the most effective antifungal drugs against dermatophytes. A strain with multiple copies of salA was constructed and exhibited elevated expression of salA and increased terbinafine resistance. This reflects a mechanism not yet reported in a pathogenic fungus.
June 2, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28566667/dermatophyte-antigen-kit
#12
Yuichiro Tsunemi
The dermatophyte antigen kit uses monoclonal antibodies that react with polysaccharides present in the dermatophyte cell wall to detect dermatophyte antigens in specimens based on the principle of immunochromatography. Clinical studies showed that the kit was very useful in the diagnosis of tinea unguium but not tinea pedis. The kit was therefore further developed as an in vitro diagnostic tool for tinea unguium and was approved by the Pharmaceuticals and Medical Devices Agency of Japan. The kit's extraction solution can extract antigens from nail specimens quickly and efficiently...
2017: Medical Mycology Journal
https://www.readbyqxmd.com/read/28566664/remarkable-works-and-cases-in-the-history-of-medical-mycology-in-japan
#13
Katsutaro Nishimoto
Several pathogenic fungi and cases related to Japanese medical mycologists were reviewed. Trichosporon inkin (as Sarcinomyces inkin) was reported as a pathogen of scrotal lesion by Oho in 1921, and Trichosporon asahii was isolated from generalized keratotic lesions in 1922 by Akagi in Japan. They were once included in Trichophyton beigelii, but then based on revision using DNA molecular technology, were returned to their original names.Microsporum ferrugineum was reported by Ota as a causative dermatophyte of tinea capitis in Japan and surrounding areas...
2017: Medical Mycology Journal
https://www.readbyqxmd.com/read/28566660/a-giant-dermatophyte-abscess-caused-by-trichophyton-rubrum-in-an-immunocompromised-patient
#14
Maiko Toyoki, Midori Hase, Yusuke Hirasawa, Takashi Umeyama, Yoshitsugu Miyazaki, Rui Kano, Takashi Sugita, Masataro Hiruma, Yuzo Kodama, Shigaku Ikeda
A 73-year-old male who had been receiving immunosuppressive drugs for 15 years developed a nodule on the left buttock region. The nodule slowly grew into a 15-cm fluctuant multilocular subcutaneous cyst. Serum beta-D-glucan levels were high, and the yellow purulent fluid obtained from the cyst was positive for Trichophyton rubrum. Granuloma formation in the cyst wall and large abscesses in the central cystic area were found, and septated hyphae were observed in both tissues. The cyst was surgically removed, and followed by itraconazole treatment...
2017: Medical Mycology Journal
https://www.readbyqxmd.com/read/28554994/total-synthesis-and-pharmacological-investigation-of-cordyheptapeptide-a
#15
Suresh Kumar, Rajiv Dahiya, Sukhbir Lal Khokra, Rita Mourya, Suresh V Chennupati, Sandeep Maharaj
The present investigation reports the synthesis of a phenylalanine-rich N-methylated cyclopeptide, cordyheptapeptide A (8), previously isolated from the insect pathogenic fungus Cordyceps sp. BCC 1788, accomplished through the coupling of N-methylated tetrapeptide and tripeptide fragments followed by cyclization of the linear heptapeptide unit. Structure elucidation of the newly synthesized cyclopolypeptide was performed by means of FT-IR, ¹H-NMR, (13)C-NMR, and fast atom bombardment mass spectrometry (FABMS), and screened for its antibacterial, antidermatophytic, and cytotoxic potential...
May 27, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28540871/clinico-mycological-study-of-dermatophytic-infections-and-their-sensitivity-to-antifungal-drugs-in-a-tertiary-care-center
#16
Soniya Mahajan, Ragini Tilak, Satyendra K Kaushal, Rabindra N Mishra, Shyam S Pandey
BACKGROUND: Worldwide, dermatophytic infections are running a chronic course either due to ineffective treatment or emerging drug resistance. In the past three decades, there has been an increase in incidence and non-responsiveness to conventional antifungals, which suggests that there is a need of antifungal sensitivity testing. AIMS: This study was aimed at identifying clinico-mycological pattern of dermatophytic infections in patients attending thedermatology outpatient department of a tertiary care hospital, and to obtain the sensitivity pattern of isolates against six commonly used oral antifungals (fluconazole, terbinafine, itraconazole, ketoconazole, griseofulvin and voriconazole)...
July 2017: Indian Journal of Dermatology, Venereology and Leprology
https://www.readbyqxmd.com/read/28525623/the-survey-of-tinea-capitis-and-scalp-dermatophyte-carriage-in-nursing-home-residents
#17
Chien-Yio Lin, Hsiu-Jung Lo, Ming-Gene Tu, Yu-Ming Ju, Yun-Chen Fan, Chih-Chao Lin, Ya-Ting Chiang, Yun-Liang Yang, Kai-Ting Chen, Pei-Lun Sun
Tinea capitis is a contagious dermatophyte infection of scalp and associated hairs. On the other hand, asymptomatic carriage is a status of positive dermatophyte scalp culture, but without signs or symptoms of tinea capitis, and no evidence of hair shaft invasion confirmed by direct microscopy. Tinea capitis and asymptomatic carriage mostly occur in children, but adult females are becoming another population in recent decades. In this study, we focused on the prevalence and related fungi of tinea capitis and asymptomatic carriage in elderly by the shampoo brush method, as well as the source of transmission, in 10 nursing home residents...
May 18, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28524381/antifungal-activity-of-gallic-acid-in-vitro-and-in-vivo
#18
Zhi-Jian Li, Meng Liu, Gulina Dawuti, Qin Dou, Yu Ma, Heng-Ge Liu, Silafu Aibai
Gallic acid (GA) is a polyphenol natural compound found in many medicinal plant species, including pomegranate rind (Punica granatum L.), and has been shown to have antiinflammatory and antibacterial properties. Pomegranate rind is used to treat bacterial and fungal pathogens in Uyghur and other systems of traditional medicine, but, surprisingly, the effects of GA on antifungal activity have not yet been reported. In this study, we aimed to investigate the inhibitory effects of GA on fungal strains both in vitro and in vivo...
May 19, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28521541/evaluation-of-the-efficacy-and-safety-of-tavaborole-topical-solution-5-in-the-treatment-of-onychomycosis-of-the-toenail-in-adults-a-pooled-analysis-of-an-8-week-post-study-follow-up-from-two-randomized-phase-3-studies
#19
Aditya K Gupta, Steve Hall, Lee T Zane, Shari R Lipner, Phoebe Rich
PURPOSE: The role of topical antifungal agents in the long-term management of toenail onychomycosis is not well established. The current study evaluated durability of clinical benefit of tavaborole topical solution, 5%, for the treatment of toenail onychomycosis. METHODS: We conducted a pooled analysis of 8-week, post-study follow-up (PSFU) data from two phase 3, randomized controlled trials in a subset of patients who experienced complete or almost clear nail (CN) at the end of treatment (week 52); 48 weeks of treatment with once-daily tavaborole compared with placebo in adults with distal subungual onychomycosis was evaluated at week 60...
May 30, 2017: Journal of Dermatological Treatment
https://www.readbyqxmd.com/read/28513812/common-dermatophytes-and-in-vitro-anti-fungal-susceptibility-testing-in-patients-attending-the-dermatological-clinic-at-the-hospital-for-tropical-medicine-bangkok
#20
Watcharamat Muangkaew, Thanwa Wongsuk, Natthanej Luplertlop
Dermatophytes comprising the genera Trichophyton, Microsporum, and Epidermophyton are important causes of superficial mycoses. The number of infected patients and the distribution of species of these organisms in our hospital were unknown. We therefore aimed to investigate the clinical pattern of dermatophyte infections and to identify the species of these dermatophytes at the Dermatological Clinic of the Hospital for Tropical Medicine, Faculty of Tropical Medicine, Mahidol University, Bangkok in a 1-year period...
May 17, 2017: New Microbiologica
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