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Mycopathologia

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https://www.readbyqxmd.com/read/28324245/comparison-of-dna-microarray-loop-mediated-isothermal-amplification-lamp-and-real-time-pcr-with-dna-sequencing-for-identification-of-fusarium-spp-obtained-from-patients-with-hematologic-malignancies
#1
Marcela de Souza, Tetsuhiro Matsuzawa, Kanae Sakai, Yasunori Muraosa, Luzia Lyra, Ariane Fidelis Busso-Lopes, Anna Sara Shafferman Levin, Angélica Zaninelli Schreiber, Yuzuru Mikami, Tohoru Gonoi, Katsuhiko Kamei, Maria Luiza Moretti, Plínio Trabasso
The performance of three molecular biology techniques, i.e., DNA microarray, loop-mediated isothermal amplification (LAMP), and real-time PCR were compared with DNA sequencing for properly identification of 20 isolates of Fusarium spp. obtained from blood stream as etiologic agent of invasive infections in patients with hematologic malignancies. DNA microarray, LAMP and real-time PCR identified 16 (80%) out of 20 samples as Fusarium solani species complex (FSSC) and four (20%) as Fusarium spp. The agreement among the techniques was 100%...
March 21, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28324244/animal-models-and-antifungal-agents-in-paracoccidioidomycosis-an-overview
#2
REVIEW
Luciano Z Goldani, Fernanda Wirth
Paracoccidioides brasiliensis is the etiologic agent of paracoccidioidomycosis, the most prevalent systemic mycosis in Latin America. The morbidity and mortality associated with paracoccidioidomycosis necessitate our understanding of fungal pathogenesis and discovering of new agents to treat this infection. Animal models have contributed much to the knowledge of fungal infections and their corresponding therapeutic treatments. This is true for animal models of the primary fungal pathogens such as P. brasiliensis...
March 21, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28324243/fungal-keratitis-secondary-to-trametes-betulina-a-case-report-and-review-of-literature
#3
Joshua S Hardin, Deanna A Sutton, Nathan P Wiederhold, James Mele, Sunali Goyal
PURPOSE: We report the first case of human infection and keratitis secondary to Trametes betulina, a rare filamentous fungus. METHODS: Clinical examination including external and slit-lamp examination and corneal scrapings with microbiologic evaluation were performed on a patient with chronic allergic conjunctivitis, entropion and a long-standing corneal ulcer resistant to treatment. RESULTS: The culture from the corneal scraping revealed a basidiomycetous fungus which was submitted for identification...
March 21, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28281037/pathogenic-dermatophytes-survive-in-nail-lesions-during-oral-terbinafine-treatment-for-tinea-unguium
#4
Tomoyuki Iwanaga, Tsuyoshi Ushigami, Kazushi Anzawa, Takashi Mochizuki
Tinea unguium caused by dermatophyte species are usually treated with oral antimycotic, terbinafine (TBF). To understand the mechanisms of improvement and recalcitrance of tinea unguium by oral TBF treatment, a method of quantifying dermatophyte viability in the nail was developed, and the viability of dermatophytes was analyzed in toenail lesions of 14 patients with KOH-positive tinea unguium treated with oral TBF 125 mg/day for up to 16 weeks. Mycological tests, including KOH examination and fungal culture, and targeted quantitative real-time PCR for internal transcribed spacer (ITS) region, including rRNA, were demonstrated at the initial visit and after 8 and 16 weeks of treatment...
March 9, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28265797/isolation-of-cryptococcus-gattii-from-a-castanopsis-argyrophylla-tree-hollow-mai-kaw-chiang-mai-thailand
#5
Kantarawee Khayhan, Ferry Hagen, Treepradab Norkaew, Tanpalang Puengchan, Teun Boekhout, Pojana Sriburee
The pathogenic yeast Cryptococcus gattii was isolated from a tree hollow of a Castanopsis argyrophylla King ex Hook.f. (Fagaceae) in Chiang Mai, Thailand. Molecular characterization with amplified fragment length polymorphism analysis and multi-locus sequence typing showed that this isolate belonged to genotype AFLP4/VGI representing C. gattii sensu stricto. Subsequent comparison of the environmental isolate with those from clinical samples from Thailand showed that they grouped closely together in a single cluster...
March 6, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28260132/imported-talaromycosis-in-oman-in-advanced-hiv-a-diagnostic-challenge-outside-the-endemic-areas
#6
Jalila Mohsin, Sulin Al Khalili, A H G Gerrits van den Ende, Faryal Khamis, Eskild Petersen, G Sybren de Hoog, Jacques F Meis, Abdullah M S Al-Hatmi
A 37-year-old male living in Oman was seen by his physician with complaints of cough, body aches with bilateral lower limb weakness and on and off fever. He was diagnosed with HIV infection and culture from blood and bone marrow grew Talaromyces marneffei. He had travelled to Malaysia on several occasions. Treatment with liposomal amphotericin B resulted in complete cure. This case is reported for its rarity and unusual presentation to alert clinicians and microbiologists to consider T. marneffei as an etiology in high risk individuals...
March 4, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28251567/fungal-succession-on-keratinous-hair-and-nail-baits-of-human-origin
#7
Sunita Mahariya, Meenakshi Sharma
Mycologically, succession is more precisely the sequential occupation of the same site by thalli (normally mycelia) either of different fungi or of different associations of fungi. For the study of fungal succession on hair bait, different soil samples were collected from different habitats of Jaipur. The fungal growth isolated from soil samples was observed macroscopically and microscopically for the appearance of fungi at regular interval of 15 days for more than 6 months. Regular microscopic examination of fungi of soil samples baited with hair showed a successional colonization of non-keratinophilic and keratinophilic fungi...
March 1, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28213800/invasive-aspergillus-laryngotracheobronchitis-in-an-adult-with-primary-cns-lymphoma
#8
Mark E Barry, William Walsh Thomas, Buer Song, Natasha Mirza
Invasive aspergillosis can be difficult to diagnose, and early recognition and initiation of therapy is imperative for improving patient outcomes. A case of invasive Aspergillus laryngotracheobronchitis is presented here with a review of the relevant literature. A 58-year-old male undergoing treatment for CNS lymphoma presented with neutropenic sepsis and acute respiratory distress requiring intubation. Following extubation, he reported persistent hoarseness for 1-month duration and he was found to have pseudomembranous plaques and ulcers of the larynx, trachea, and right mainstem bronchus consistent with Aspergillus laryngotracheobronchitis...
February 17, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28197828/coinfection-with-lichtheimia-corymbifera-and-aspergillus-flavus-in-an-immune-competent-patient-mimicking-as-pulmonary-renal-syndrome
#9
Ali Bin Sarwar Zubairi, Farah Idrees, Kauser Jabeen, Saima Kamal, Afia Zafar
Lichtheimia corymbifera and Aspergillus flavus pulmonary coinfection has been rarely reported in immune-competent patients. We report case of a young male who presented with clinical features of pulmonary-renal syndrome and was later diagnosed to have bilateral polymicrobial fungal lung infection.
February 14, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28190203/subcutaneous-mycotic-cyst-caused-by-roussoella-percutanea-in-a-uk-renal-transplant-patient
#10
Julia A Vasant, Francesca Maggiani, Andrew M Borman
Fungi from more than 100 genera have been implicated in subcutaneous fungal infections, usually following traumatic inoculation of the etiologic agent. With the advent of molecular approaches to fungal identification and taxonomy, novel agents of subcutaneous mycoses are increasingly reported. In this manner, Roussoella percutanea, a novel species in Pleosporales, was described in 2014 from a subcutaneous mass in an immunocompetent male adult. Two additional cases involving renal transplant recipients were recently reported from patients resident in France and Germany, with several further cases discovered after analyses of historical culture collection isolates...
February 11, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28154954/deep-dermatophytosis-caused-by-zoophilic-strain-of%C3%A2-trichophyton-interdigitale%C3%A2-with-successful-treatment-of-itraconazole
#11
Hsuan-An Su, Pei-Lun Sun, Wen-Wei Sung, Su-Ya Cheng, Hui-Chin Chang, Jen-Hung Yang, Yu-Ping Hsiao
We report a 66-year-old female patient with deep dermatophytosis caused by zoophilic strain of Trichophyton interdigitale, a rare granulomatous presentation of Trichophyton species infection in patients with underlying systemic diseases, and she was successfully cured by itraconazole. Since the identification of Trichophyton mentagrophytes complex had been misused for years, a brief discussion of molecular diagnosis and taxonomy of T. mentagrophytes complex is given. The pathogenesis and comparison with cases reported in the literature are also discussed...
February 2, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28144822/in-vitro-activity-of-berberine-alone-and-in-combination-with-antifungal-drugs-against-planktonic-forms-and-biofilms-of-trichosporon-asahii
#12
Lin Cong, Yong Liao, Suteng Yang, Rongya Yang
Trichosporon asahii (T. asahii) is an opportunistic pathogen that can cause life-threatening infections in immunocompromised patients, with high mortality rates up to 80% despite treated with antifungal drugs. The biofilms-forming ability of T. asahii on indwelling medical devices may account for the resistance to antifungal drugs. Berberine (BBR) has been demonstrated to have antifungal activity and synergistic effects in combination with antifungal drugs against pathogenic fungi. In the present study, the in vitro activities of BBR alone or combined with fluconazole (FLC), itraconazole (ITC), voriconazole (VRC), caspofungin (CAS) and amphotericin B (AMB) against planktonic forms and biofilms of 21 clinical T...
January 31, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28144821/nebulized-liposomal-amphotericin-b-for-treatment-of-pulmonary-infection-caused-by-hormographiella-aspergillata-case-report-and-literature-review
#13
Cendrine Godet, Estelle Cateau, Blandine Rammaert, Marine Grosset, Gwenaël Le Moal, Guillaume Béraud, Jean Philippe Martellosio, Xavier Iriart, Jacques Cadranel, France Roblot
Invasive fungal infection is a serious complication following allogeneic hematopoietic stem cell transplantation. Pulmonary infection due to Hormographiella aspergillata is an uncommon condition associated with a high mortality rate. The susceptibility of H. aspergillata to available antifungal agents is not well established. We report for the first time a case of H. aspergillata lung infection that responded poorly to conventional treatment with liposomal amphotericin B (LAmB; 3 mg kg(-1) of body weight per day) with renal damage at higher posology (5 mg kg(-1) of body weight per day), but improved rapidly after addition of nebulized LAmB to intravenous LAmB (3 mg kg(-1) of body weight per day)...
January 31, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28124220/in-vitro-antifungal-susceptibility-of-oral-candida-isolates-from-patients-suffering-from-caries-and-chronic-periodontitis
#14
Janire De-la-Torre, María Esther Ortiz-Samperio, Cristina Marcos-Arias, Xabier Marichalar-Mendia, Elena Eraso, María Ángeles Echebarria-Goicouria, José Manuel Aguirre-Urizar, Guillermo Quindós
Caries and chronic periodontitis are common oral diseases where a higher Candida colonization is reported. Antifungal agents could be adjuvant drugs for the therapy of both clinical conditions. The aim of the current study has been to evaluate the in vitro activities of conventional and new antifungal drugs against oral Candida isolates from patients suffering from caries and/or chronic periodontitis. In vitro activities of amphotericin B, fluconazole, itraconazole, miconazole, nystatin, posaconazole and voriconazole against 126 oral Candida isolates (75 Candida albicans, 18 Candida parapsilosis, 11 Candida dubliniensis, six Candida guilliermondii, five Candida lipolytica, five Candida glabrata, four Candida tropicalis and two Candida krusei) from 61 patients were tested by the CLSI M27-A3 method...
January 25, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28124219/risk-factors-and-outcomes-of-invasive-fungal-infections-in-allogeneic-hematopoietic-cell-transplant-recipients
#15
Marisa H Miceli, Tracey Churay, Thomas Braun, Carol A Kauffman, Daniel R Couriel
Allogeneic hematopoietic cell transplant (HCT) recipients are at increased risk of invasive fungal infections (IFI), which are associated with a high mortality rate. We evaluated the impact of IFI in allogeneic HCT patients. In total, 541 consecutive allogeneic HCT recipients were included. The cumulative incidence of any IFI and mold infections at 1-year post-HCT was 10 and 7%, respectively. Median times to IFI and mold infection were 200 and 210 days, respectively. There was a trend toward fewer IFI and mold infections in the last several years...
January 25, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28108869/molecular-identification-of-malassezia-species-in-patients-with-malassezia-folliculitis-in-sfax-tunisia
#16
F Cheikhrouhou, R Guidara, A Masmoudi, H Trabelsi, S Neji, H Sellami, F Makni, A Ayadi
AIM: Malassezia folliculitis is caused by the invasion of hair follicles by large numbers of Malassezia cells. Several Malassezia researches still use cultures, morphology and biochemical techniques. The aim of this study was to identify Malassezia species isolated from patients diagnosed with folliculitis, at the Parasitology and Mycology Laboratory of Sfax University Hospital, and to explore the genetic diversity of Malassezia by using PCR-RFLP and PCR-sequencing targeting the rDNA region of the Malassezia genome...
January 20, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28108868/morpho-molecular-characterization-of-soil-inhabitant-dermatophytes-from-ahvaz-southwest-of-iran-a-high-occurrence-of-microsporum-fulvum
#17
Ali Rezaei-Matehkolaei, Abbas Jahangiri, Ali Zarei Mahmoudabadi, Mohammad Javad Najafzadeh, Sadegh Nouripour-Sisakht, Koichi Makimura
Occurrence and diversity of dermatophyte mycoflora in 298 soil samples from Ahvaz, Southwest of Iran was investigated by using the hair-baiting technique. The samples were collected during spring (n = 210) and autumn (n = 88) of 2015, and the fungal isolates were identified based on the macro- and micro-morphology of colonies and with further ITS-rDNA RFLP and sequencing. Totally, 60 soil samples (20.1%) were positive for dermatophyte growth whose pH varied from 7.0 to 7.9. The highest (26.6%) and the lowest (14...
January 20, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28108867/administration-of-voriconazole-in-disseminated-talaromyces-penicillium-marneffei-infection-a-retrospective-study
#18
Yanyin Ouyang, Shuangqi Cai, Hao Liang, Cunwei Cao
Talaromyces (Penicillium) marneffei infection is a fatal disseminated mycosis caused by the dimorphic fungus Talaromyces marneffei; the therapeutic strategies for this infectious disease are limited. The aim of this retrospective study was to evaluate the efficacy and safety of voriconazole for treating patients with disseminated T. marneffei infection with or without HIV infection in a clinical setting. Patients who intravenously received voriconazole (6 mg/kg q12 h for the first 24 h followed by 4 mg/kg q12 h) as the initial antifungal treatment were enrolled...
January 20, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28101694/relationship-between-phenotypic-and-genotypic-characteristics-of-trichophyton-mentagrophytes-strains-isolated-from-patients-with-dermatophytosis
#19
I Dhib, I Khammari, A Yaacoub, F Hadj Slama, M Ben Saïd, R Zemni, A Fathallah
According to epidemiological, clinical and mycological criteria, it has long been admitted that the Trichophyton mentagrophytes species includes two varieties: a zoophilic variety (var. mentagrophytes) and an anthropophilic variety (var. interdigitale) that involve the upper and the lower part of the body, respectively. The further application of molecular techniques to the characterization of dermatophyte strains showed that this classification is unreliable. The aim of our study was to assess the usefulness of PCR-RFLP (restriction fragment length polymorphism) and sequencing in the characterization of T...
January 18, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28084574/large-scale-land-development-fugitive-dust-and-increased-coccidioidomycosis-incidence-in-the-antelope-valley-of-california-1999-2014
#20
Aaron J Colson, Larry Vredenburgh, Ramon E Guevara, Natalia P Rangel, Carl T Kloock, Antje Lauer
Ongoing large-scale land development for renewable energy projects in the Antelope Valley, located in the Western Mojave Desert, has been blamed for increased fugitive dust emissions and coccidioidomycosis incidence among the general public in recent years. Soil samples were collected at six sites that were destined for solar farm construction and were analyzed for the presence of the soil-borne fungal pathogen Coccidioides immitis which is endemic to many areas of central and southern California. We used a modified culture-independent nested PCR approach to identify the pathogen in all soil samples and also compared the sampling sites in regard to soil physical and chemical parameters, degree of disturbance, and vegetation...
January 13, 2017: Mycopathologia
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