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https://www.readbyqxmd.com/read/28340159/detection-of-polish-clinical-aspergillus-fumigatus-isolates-resistant-to-triazoles
#1
Urszula Nawrot, Ewelina Kurzyk, Maiken Cavling Arendrup, Martyna Mroczynska, Katarzyna Wlodarczyk, Beata Sulik-Tyszka, Marta Wróblewska, Marek Ussowicz, Przemyslaw Zdziarski, Kinga Niewinska, Anna Brillowska-Dabrowska
We studied the presence of triazole resistance of 121 Aspergillus fumigatus clinical isolates collected in two Polish cities, Warsaw and Wrocław, to determine if resistance is emerging in our country. We identified five itraconazole resistant isolates (4.13%) carrying the TR34/L98H alteration in Cyp51A gene, four of which were cross-resistant to posaconazole and one to voriconazole. One isolate was intermediate susceptible to itraconazole and harbored no Cyp51A alterations. The study confirms the presence of azole resistant A...
March 4, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28336168/-pseudo-tumoral-invasive-fungus-infection-of-the-maxillary-sinus-in-abidjan
#2
A K Tanon, C Assouan, E Anzouan-Kacou, D N'guessan, A Salami, S Boni, E Konan
INTRODUCTION: The invasive fungal infection of the maxillary sinus is a rare and serious disease generally favored by immunosuppression. We report an exceptional case of pseudotumoral invasive fungal infection of the maxillary sinus in an immunocompetent patient. OBSERVATION: A 32-year-old patient consulted for labial and left temporal swelling associated with proptosis and chemosis that has been developing for 18 months. The scanner objectified a filling of the left maxillary sinus, and the ipsilateral orbital cavity, and the surrounding muscles...
March 20, 2017: Journal de Mycologie Médicale
https://www.readbyqxmd.com/read/28329593/cutaneous-alternariosis-in-an-immunocompetent-patient
#3
Ravi Chandubhai Patel, Matthew Helm, Ikue Shimizu
Alternaria species are a type of dematiaceous fungi that cause a wide spectrum of disease with cutaneous infections being the most common. These infections are most common in immunocompromised individuals. However, only a few cases of primary cutaneous alternariosis have been reported in immunocompetent patients. We present a case of an otherwise healthy 13-year-old male who presented with primary cutaneous alternariosis on his left ankle that responded to the use of topical econazole and oral itraconazole...
October 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28327806/invasive-fungal-infection-in-patients-with-hematologic-disorders-in-a-brazilian-tertiary-care-hospital
#4
Milton Camplesi, Hildene Meneses Silva, Adriano Moraes Arantes, Carolina Rodrigues Costa, Fábio Silvestre Ataides, Thaisa Cristina Silva, Maysa de Paula Costa Dos Reis, Maria do Rosário Rodrigues Silva
INTRODUCTION: Invasive fungal infections (IFIs) are an important complication in immunocompromised individuals, particularly neutropenic patients with hematological malignancies. In this study, we aimed to verify the epidemiology and diagnosis of IFIs in patients with hematologic problems at a tertiary hospital in Goiânia-GO, Brazil. METHODS: Data from 117 patients, involving 19 cases of IFIs, were collected. The collected data included diagnosis methods, demographics, clinical characteristics, and in vitro susceptibility to different antifungal agents...
January 2017: Revista da Sociedade Brasileira de Medicina Tropical
https://www.readbyqxmd.com/read/28317391/in-vitro-inhibitory-effects-of-farnesol-and-interactions-between-farnesol-and-antifungals-against-biofilms-of-candida-albicans-resistant-strains
#5
Jinping Xia, Fang Qian, Wenqian Xu, Zhenzhen Zhang, Xin Wei
Antifungal resistance is a serious problem in clinical infections. Farnesol, which is a potential antifungal agent against biofilms formed by Candida albicans resistant strains (a fluconazole-resistant isolate derived from SC5314 and two clinical Candida resistant isolates), was investigated in this study. The inhibitory effects of farnesol on biofilms were examined by XTT assay. The morphological changes and biofilm thicknesses were analyzed by scanning electron microscopy and confocal laser scanning microscopy, respectively...
March 20, 2017: Biofouling
https://www.readbyqxmd.com/read/28303848/triazole-resistance-in-aspergillus-fumigatus-clinical-isolates-obtained-in-nanjing-china
#6
Ming Zhang, Chun-Lai Feng, Fei Chen, Qian He, Xin Su, Yi Shi
BACKGROUND: During the past decades, the incidence of invasive aspergillosis (IA) caused by Aspergillus fumigatus has increased dramatically. The aims of this study were to investigate the susceptibility of clinical isolates of A. fumigatus to triazole and the underlying cyp51A mutations in triazole-resistant A. fumigatus. METHODS: A total of 126 A. fumigatus clinical isolates from 126 patients with proven or probable IA were obtained from four large tertiary hospitals in Nanjing, China, between August 2012 and July 2015...
March 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28300442/an-atypical-case-of-mucocutaneous-blastomycosis-in-the-greater-toronto-area
#7
Annie Liu, Neil Shear, John Wong, Hagen B E Klieb
Blastomycosis is an uncommon infection caused by Blastomyces dermatitidis. While management is fairly straightforward, diagnosis can be quite challenging. We describe a case of a healthy 37-year-old man who presented with progressive mucocutaneous lesions, without lung or other systemic involvement. Treatment with itraconazole resulted in complete resolution of signs and symptoms. This case showcases the variety of blastomycosis clinical presentation and the importance of blastomycosis in the differential diagnosis of verrucous and papillomatous mucocutaneous lesions...
January 1, 2017: Journal of Cutaneous Medicine and Surgery
https://www.readbyqxmd.com/read/28296409/microfibrous-solid-dispersions-of-poorly-water-soluble-drugs-produced-via-centrifugal-spinning-unexpected-dissolution-behaviour-on-recrystallization
#8
Stefania Marano, Susan Anne Barker, Shahrzad Missaghi, Ali Rajabi-Siahboomi, Bahijja Tolulope Raimi-Abraham, Abil E Aliev, Duncan Q M Craig
Temperature-controlled, solvent-free centrifugal spinning may be used as a means of rapid production of amorphous solid dispersions in the form of drug-loaded sucrose microfibers. However, due to the high content of amorphous sucrose in the formulations, such microfibers may be highly hygroscopic and unstable on storage. In this study, we explore both the effects of water uptake of the microfibers and the consequences of deliberate recrystallization for the associated dissolution profiles. The stability of sucrose microfibers loaded with three selected BCS class II model drugs (itraconazole (ITZ), olanzapine (OLZ) and piroxicam (PRX)) was investigated under four different relative humidity conditions (11, 33, 53 and 75% RH) at 25°C for 8 months, particularly focusing on the effect of the highest level of moisture (75% RH) on the morphology, size, drug distribution, physical state and dissolution performance of microfibers...
March 15, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28295690/azole-resistance-in-candida-albicans-from-animals-highlights-on-efflux-pump-activity-and-gene-overexpression
#9
Marcos Fábio Gadelha Rocha, Silviane Praciano Bandeira, Lucas Pereira de Alencar, Luciana Magalhães Melo, Jamille Alencar Sales, Manoel de Araújo Neto Paiva, Carlos Eduardo Cordeiro Teixeira, Débora de Souza Collares Maia Castelo-Branco, Waldemiro de Aquino Pereira-Neto, Rossana de Aguiar Cordeiro, José Júlio Costa Sidrim, Raimunda Sâmia Nogueira Brilhante
This study investigated potential mechanisms of azole resistance among Candida albicans from animals, including efflux pump activity, ergosterol content and gene expression. For this purpose, 30 azole-resistant C. albicans strains from animals were tested for their antifungal susceptibility, according to document M27-A3, efflux pump activity by rhodamine 6G test, ergosterol content and expression of the genes CDR1, CDR2, MDR1, ERG11 by RT-qPCR. These strains were resistant to at least one azole derivative...
March 10, 2017: Mycoses
https://www.readbyqxmd.com/read/28284662/effect-of-a-150%C3%A2-mg-dose-of-rifabutin-on-serum-itraconazole-levels-in-patients-with-coexisting-chronic-pulmonary-aspergillosis-and-mycobacterium-avium-complex-lung-disease
#10
Seong Mi Moon, Byung Woo Jhun, Hyun Lee, Hye Yun Park, Kyeongman Jeon, Soo-Youn Lee, Won-Jung Koh
Patients with coexisting chronic pulmonary aspergillosis and nontuberculous mycobacterial lung disease may undergo treatment with both the antifungal itraconazole and the antimycobacterial rifamycin. However, rifamycins interact with itraconazole. We examined the effects of a 150 mg dose of rifabutin on serum itraconazole levels and found significantly lower levels in 28 patients receiving itraconazole with rifabutin (median, 0.65 μg/ml) compared with 65 patients receiving itraconazole alone (median 3.45 μg/ml, P < 0...
March 8, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28282366/comparing-azole-plasma-trough-levels-in-lung-transplant-recipients-percentage-of-therapeutic-levels-and-intrapatient-variability
#11
Daniela Stelzer, Alexandra Weber, Franziska Ihle, Sandhya Matthes, Felix Ceelen, Gregor Zimmermann, Nikolaus Kneidinger, Rene Schramm, Hauke Winter, Michael Zoller, Michael Vogeser, Juergen Behr, Claus Neurohr
BACKGROUND: This study compared therapeutic azole plasma trough levels (APL) of the azole antimycotics itraconazole (ITR), voriconazole (VOR), and posaconazole (POS) in lung transplant recipients and analyzed the influencing factors. In addition, intrapatient variability for each azole was determined. METHODS: From July 2012 to July 2015, 806 APL of ITR, VOR, posaconazole liquid (POS-Liq), and posaconazole tablets (POS-Tab) were measured in 173 patients of the Munich Lung Transplantation Program...
April 2017: Therapeutic Drug Monitoring
https://www.readbyqxmd.com/read/28281345/singlet-versus-triplet-excited-state-mediated-photoin-duced-dehalogenation-reactions-of-itraconazole-in-acetonitrile-and-aqueous-solutions
#12
Ruixue Zhu, Ming-De Li, Lili Du, David Lee Phillips
The photoinduced dehalogenation of the antifungal drug Itraconazole in acetonitrile and acetonitrile/water mixed solutions was investigated using femtosecond and nanosecond time-resolved transient absorption (fs-TA and ns-TA) and nanosecond time-resolved resonance Raman spectroscopy (ns-TR3) experiments. An excited resonance energy transfer was found to take place from the 4-phenyl-4,5-dihydro-3H-1,2,4-triazol-3-one part of the molecule to the 1,3-dichlorobenzene part of the molecule when Itraconazole is excited by ultraviolet light...
March 10, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28279786/miltefosine-is-fungicidal-to-paracoccidioides-spp-yeast-cells-but-subinhibitory-concentrations-induce-melanisation
#13
Diego Conrado Pereira Rossi, Cristina de Castro Spadari, Joshua Daniel Nosanchuk, Carlos Pelleschi Taborda, Kelly Ishida
Paracoccidioidomycosis (PCM) is a systemic mycosis caused by the dimorphic fungi Paracoccidioides spp. The duration of antifungal treatment ranges from months to years and relapses may nevertheless occur despite protracted therapy. Thus, there remains an urgent need for new therapeutic options. Miltefosine (MLT), an analogue of alkylphospholipids, has antifungal activity against species of yeast and filamentous fungi. The aim of this study was to evaluate the antifungal effects of MLT on the yeast forms of Paracoccidioides brasiliensis and Paracoccidioides lutzii...
March 6, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28275534/disseminated-phaeohyphomycosis-in-a-dog
#14
Lana S Rothenburg, Timothy A Snider, Allison Wilson, Anthony W Confer, Akhilesh Ramachandran, Rinosh Mani, Theresa Rizzi, Laura Nafe
Phaeohyphomycosis is a rare but emerging disease caused by dematiaceous fungi. Here we describe the case of an immunosuppressed dog with disseminated phaeohyphomycosis secondary to Bipolaris spicifera infection. Regionally extensive infiltration of the paw pads, skin, myocardium, liver, renal interstitium and diaphragm was identified on histopathology. Candida glabrata and Fusarium oxysporum were also cultured from multiple sites post-mortem. The dog was treated with fluconazole, itraconazole, terbinafine and liposomal amphotericin B, but was euthanized due to its poor prognosis after 12 days of therapy...
March 2017: Medical Mycology Case Reports
https://www.readbyqxmd.com/read/28273974/primary-cutaneous-histoplasmosis-masquerading-as-lepromatous-leprosy
#15
Jenna Blah Bhattacharya, Poonam Rani, Radhika Aggarwal, Seema Kaushal
Histoplasmosis is a genus of dimorphic fungi having various varieties of which the commonest one causing infection is Histoplasma capsulatum known to cause histoplasmosis. It has a varied disease spectrum ranging from an acute infection to chronic disease especially in lungs, disseminated disease and cutaneous disorder. Histoplasma capsulatum usually causes subclinical infection and serious infections only manifest in immunocompromised patients. Frank cases of infection are seen in pulmonary histoplasmosis...
January 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28264849/genetic-diversity-and-in-vitro-antifungal-susceptibility-of-200-clinical-and-environmental-aspergillus-flavus-isolates
#16
Mojtaba Taghizadeh-Armaki, Mohammad Taghi Hedayati, Saham Ansari, Saeed Mahdavi Omran, Sasan Saber, Haleh Rafati, Jan Zoll, Henrich A van der Lee, Willem J G Melchers, Paul E Verweij, Seyedmojtaba Seyedmousavi
Aspergillus flavus has been frequently reported as the leading cause of invasive aspergillosis in certain tropical and sub-tropical countries.Two hundred A. flavus strains originating from clinical and environmental sources and collected between 2008 and 2015 were phylogenetically identified at the species level by analyzing partial β-tubulin and calmodulin genes. In vitro antifungal susceptibility testing was performed against antifungals using the EUCAST (European Committee on Antimicrobial Susceptibility Testing) broth microdilution method...
March 6, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28262107/rf-itraconazole-pulse-therapy-for-seborrheic-dermatitis-a-treatment-approach-to-consider
#17
V Fatsini-Blanch, M I Martínez-González, S Heras-González, A de Quintana-Sancho
No abstract text is available yet for this article.
March 2, 2017: Actas Dermo-sifiliográficas
https://www.readbyqxmd.com/read/28261269/comparative-hepatotoxicity-of-fluconazole-ketoconazole-itraconazole-terbinafine-and-griseofulvin-in-rats
#18
Star Khoza, Ishmael Moyo, Denver Ncube
Oral ketoconazole was recently the subject of regulatory safety warnings because of its association with increased risk of inducing hepatic injury. However, the relative hepatotoxicity of antifungal agents has not been clearly established. The aim of this study was to compare the hepatotoxicity induced by five commonly prescribed oral antifungal agents. Rats were treated with therapeutic oral doses of griseofulvin, fluconazole, itraconazole, ketoconazole, and terbinafine. After 14 days, only ketoconazole had significantly higher ALT levels (p = 0...
2017: Journal of Toxicology
https://www.readbyqxmd.com/read/28258218/structural-analyses-of-candida-albicans-sterol-14%C3%AE-demethylase-complexed-with-azole-drugs-address-the-molecular-basis-of-azole-mediated-inhibition-of-fungal-sterol-biosynthesis
#19
Tatiana Y Hargrove, Laura Friggeri, Zdzislaw Wawrzak, Aidong Qi, William J Hoekstra, Robert J Schotzinger, John D York, F Peter Guengerich, Galina I Lepesheva
With some advances in modern medicine (such as cancer chemotherapy, broad exposure to antibiotics, and immunosuppression) the incidence of opportunistic fungal pathogens such as Candida albicans has increased. Cases of drug resistance among these pathogens have become more frequent, requiring the development of new drugs and a better understanding of the targeted enzymes. Sterol 14α-demethylase (CYP51) is a cytochrome P450 enzyme required for biosynthesis of sterols in eukaryotic cells and the major target of clinical drugs for managing fungal pathogens, but some of the CYP51 key features important for rational drug design have remained obscure...
March 3, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28257640/risk-factors-for-candida-parapsilosis-bloodstream-infection-in-a-neonatal-intensive-care-unit-a-case-control-study
#20
Carmine Garzillo, Maria Bagattini, Lidija Bogdanović, Anna Di Popolo, Vita Dora Iula, Maria Rosaria Catania, Francesco Raimondi, Maria Triassi, Raffaele Zarrilli
BACKGROUND: Candida parapsilosis is increasingly responsible for invasive candidiasis in neonates. This study investigates phenotypic and genotypic features of C. parapsilosis microbial isolates and underlying clinical conditions associated with acquisition of C. parapsilosis in a neonatal intensive care unit (NICU) in Italy. METHODS: Identification of C. parapsilosis was performed by VITEK® 2 and MALDI TOF and confirmed by analysis of internal transcribed spacer ribosomal DNA sequences...
January 19, 2017: Italian Journal of Pediatrics
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