Allergic Bronchopulmonary Mycosis Due to Fungi Other Than Aspergillus: a Global Overview
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Isolation and Expression of a Malassezia Globosa Lipase Gene, LIP1 Yvonne M
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Elsevier - Publisher Connector ORIGINAL ARTICLE Isolation and Expression of a Malassezia globosa Lipase Gene, LIP1 Yvonne M. DeAngelis1, Charles W. Saunders1, Kevin R. Johnstone1, Nancy L. Reeder1, Christal G. Coleman2, Joseph R. Kaczvinsky Jr1, Celeste Gale1, Richard Walter1, Marlene Mekel1, Martin P. Lacey1, Thomas W. Keough1, Angela Fieno1, Raymond A. Grant1, Bill Begley1, Yiping Sun1, Gary Fuentes1, R. Scott Youngquist1, Jun Xu1 and Thomas L. Dawson Jr1 Dandruff and seborrheic dermatitis (D/SD) are common hyperproliferative scalp disorders with a similar etiology. Both result, in part, from metabolic activity of Malassezia globosa and Malassezia restricta, commensal basidiomycete yeasts commonly found on human scalps. Current hypotheses about the mechanism of D/SD include Malassezia-induced fatty acid metabolism, particularly lipase-mediated breakdown of sebaceous lipids and release of irritating free fatty acids. We report that lipase activity was detected in four species of Malassezia, including M. globosa. We isolated lipase activity by washing M. globosa cells. The isolated lipase was active against diolein, but not triolein. In contrast, intact cells showed lipase activity against both substrates, suggesting the presence of at least another lipase. The diglyceride-hydrolyzing lipase was purified from the extract, and much of its sequence was determined by peptide sequencing. The corresponding lipase gene (LIP1) was cloned and sequenced. Confirmation that LIP1 encoded a functional lipase was obtained using a covalent lipase inhibitor. LIP1 was differentially expressed in vitro. Expression was detected on three out of five human scalps, as indicated by reverse transcription-PCR. -
Central Nervous System Infections by Members of the Pseudallescheria
Review article Central nervous system infections by members of the Pseudallescheria boydii species complex in healthy and immunocompromised hosts: epidemiology, clinical characteristics and outcome A. Serda Kantarcioglu,1 Josep Guarro2 and G. S. de Hoog3 1Department of Microbiology and Clinical Microbiology, Cerrahpasa Medical Faculty, Istanbul, Turkey, 2Unitat de Microbiologia, Facultat de Medicina i Ciencies de la Salut, Universitat Rovira i Virgili, Reus, Spain and 3Centraalbureau voor Schimmelcultures, Utrecht, and Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, The Netherlands Summary Infections caused by members of the Pseudallescheria boydii species complex are currently among the most common mould infections. These fungi show a particular tropism for the central nervous system (CNS). We reviewed all the available reports on CNS infections, focusing on the geographical distribution, infection routes, immunity status of infected individuals, type and location of infections, clinical manifestations, treatment and outcome. A total of 99 case reports were identified, with similar percentage of healthy and immunocompromised patients (44% vs. 56%; P = 0.26). Main clinical types were brain abscess (69%), co-infection of brain tissue and ⁄ or spinal cord with meninges (10%) and meningitis (9%). The mortality rate was 74%, regardless of the patientÕs immune status, or the infection type and ⁄ or location. Cerebrospinal fluid culture was revealed as a not very important tool as the percentage of positive samples for P. boydii complex was not different from that of negative ones (67% vs. 33%; P = 0.10). In immunocompetent patients, CNS infection was preceded by near drowning or trauma. In these patients, the infection was characterised by localised involvement and a high fatality rate (76%). -
Molecular Analysis of Dermatophytes Suggests Spread of Infection Among Household Members
Molecular Analysis of Dermatophytes Suggests Spread of Infection Among Household Members Mahmoud A. Ghannoum, PhD; Pranab K. Mukherjee, PhD; Erin M. Warshaw, MD; Scott Evans, PhD; Neil J. Korman, MD, PhD; Amir Tavakkol, PhD, DipBact Practice Points When a patient presents with tinea pedis or onychomycosis, inquire if other household members also have the infection, investigate if they have a history of concomitant tinea pedis and onychomycosis, and examine for plantar scaling and/or nail discoloration. If the variables above areCUTIS observed, think about spread of infection and treatment options. Dermatophyte infection from the same strains may Drs. Ghannoum, Mukherjee, and Korman are from University be an important route for transmission of derma- Hospitals Case Medical Center, Cleveland, Ohio. Dr. Warshaw is from the University of Minnesota, Minneapolis, and Minneapolis Veterans tophytoses within a household. In this study, we AffairsDo Medical Center. Dr. Evans is from Notthe Harvard School of Public used molecularCopy methods to identify dermatophytes Health, Boston, Massachusetts. Dr. Tavakkol was from Novartis in members of dermatophyte-infected households Pharmaceuticals Corporation, East Hanover, New Jersey, and and evaluated variables associated with the currently is from Topica Pharmaceuticals, Inc, Los Altos, California. spread of infection. Fungal species were identi- This article was supported by a grant from Novartis Pharmaceuticals Corporation. Dr. Ghannoum has served as a consultant and/or fied by polymerase chain reaction (PCR) using speaker for and has received grants and contracts from Merck & Co, primers targeting the internal transcribed spacer Inc; Novartis Pharmaceuticals Corporation; Pfizer Inc; and Stiefel, (ITS) regions (ITS1 and ITS4). For strain differen- a GSK company. -
Dermatophyte and Non-Dermatophyte Onychomycosis in Singapore
Australas J. Dermatol 1992; 33: 159-163 DERMATOPHYTE AND NON-DERMATOPHYTE ONYCHOMYCOSIS IN SINGAPORE JOYCE TENG-EE LIM, HOCK CHENG CHUA AND CHEE LEOK GOH Singapore SUMMARY Onychomycosis is caused by dermatophytes, moulds and yeasts. It is important to identify the non-dermatophyte moulds as they are resistant to the usual anti-fungals. A prospective study was undertaken in the National Skin Centre, Singapore to study the pattern of dermatophyte and non-dermatophyte onychomycosis. 53 male and 47 female patients seen between June 1990 and June 1991 were entered into the study. Direct microscopy was done and the nail clippings were cultured. Toe and finger nails were equally infected. Dermatophytes were isolated from 21 patients namely, T. rubrum (12/21), T. interdigitale (5/21), T. mentagrophytes (3/21) and T. violaceum (1/21). Candida onychomycosis occurred in 39 patients and was caused by C. albicans (38/39) and C. parapsilosis (1/39). 37/39 patients had associated paronychia. 5 types of moulds were isolated from 12 patients, namely Fusarium species (6/12), Aspergillus species (3/12), S. brevicaulis (1/12), Aureobasilium species (1/12) and Penicillium species (1/12). Although the clinical pattern and microscopy may predict the type of organisms, in practice this is difficult. Only cultures were confirmatory. 28% (28/100) had negative cultures despite a positive microscopy, and moulds (12/100) grown might be contaminants rather than pathogens. Key words: Moulds, yeasts, fungi, tinea, onychomycosis, dermatophyte, non-dermatophyte INTRODUCTION METHODS AND MATERIALS Onychomycosis, a common nail disorder, is 100 consecutive patients, seen in our centre caused by dermatophytes, non-dermatophyte between June 1990 and June 1991, with a new moulds, or yeasts. -
Managing Athlete's Foot
South African Family Practice 2018; 60(5):37-41 S Afr Fam Pract Open Access article distributed under the terms of the ISSN 2078-6190 EISSN 2078-6204 Creative Commons License [CC BY-NC-ND 4.0] © 2018 The Author(s) http://creativecommons.org/licenses/by-nc-nd/4.0 REVIEW Managing athlete’s foot Nkatoko Freddy Makola,1 Nicholus Malesela Magongwa,1 Boikgantsho Matsaung,1 Gustav Schellack,2 Natalie Schellack3 1 Academic interns, School of Pharmacy, Sefako Makgatho Health Sciences University 2 Clinical research professional, pharmaceutical industry 3 Professor, School of Pharmacy, Sefako Makgatho Health Sciences University *Corresponding author, email: [email protected] Abstract This article is aimed at providing a succinct overview of the condition tinea pedis, commonly referred to as athlete’s foot. Tinea pedis is a very common fungal infection that affects a significantly large number of people globally. The presentation of tinea pedis can vary based on the different clinical forms of the condition. The symptoms of tinea pedis may range from asymptomatic, to mild- to-severe forms of pain, itchiness, difficulty walking and other debilitating symptoms. There is a range of precautionary measures available to prevent infection, and both oral and topical drugs can be used for treating tinea pedis. This article briefly highlights what athlete’s foot is, the different causes and how they present, the prevalence of the condition, the variety of diagnostic methods available, and the pharmacological and non-pharmacological management of the -
Trichosporon Beigelii Infection Presenting As White Piedra and Onychomycosis in the Same Patient
Trichosporon beigelii Infection Presenting as White Piedra and Onychomycosis in the Same Patient Lt Col Kathleen B. Elmer, USAF; COL Dirk M. Elston, MC, USA; COL Lester F. Libow, MC, USA Trichosporon beigelii is a fungal organism that causes white piedra and has occasionally been implicated as a nail pathogen. We describe a patient with both hair and nail changes associated with T beigelii. richosporon beigelii is a basidiomycetous yeast, phylogenetically similar to Cryptococcus.1 T T beigelii has been found on a variety of mammals and is present in soil, water, decaying plants, and animals.2 T beigelii is known to colonize normal human skin, as well as the respiratory, gas- trointestinal, and urinary tracts.3 It is the causative agent of white piedra, a superficial fungal infection of the hair shaft and also has been described as a rare cause of onychomycosis.4 T beigelii can cause endo- carditis and septicemia in immunocompromised hosts.5 We describe a healthy patient with both white piedra and T beigelii–induced onychomycosis. Case Report A 62-year-old healthy man who worked as a pool maintenance employee was evaluated for thickened, discolored thumb nails (Figure 1). He had been aware of progressive brown-to-black discoloration of the involved nails for 8 months. In addition, soft, light yellow-brown nodules were noted along the shafts of several axillary hairs (Figure 2). Microscopic analysis of the hairs revealed nodal concretions along the shafts (Figure 3). No pubic, scalp, eyebrow, eyelash, Figure 1. Onychomycotic thumb nail. or beard hair involvement was present. Cultures of thumb nail clippings on Sabouraud dextrose agar grew T beigelii and Candida parapsilosis. -
P2399 Lateral Flow Immunoassay for Rapid Detection of Dermatophytes in Clinical Specimens
P2399 Lateral flow immunoassay for rapid detection of dermatophytes in clinical specimens Amanda Burnham-Marusich*1, Caitlyn Orne1 2, Alexander Kvam3, Heather Green2, Alexandra Myers4, Aline Rodrigues Hoffmann4, Amy Crum5, Mahmoud Ghannoun6, Thomas Kozel1 3 1DxDiscovery, Reno, United States, 2University of Nevada, Reno, Reno, United States, 3University of Nevada, Reno School of Medicine, Reno, United States, 4Texas A&M University, College Station, United States, 5Houston SPCA, Houston, United States, 6Case Western Reserve University, Cleveland, United States Background: Fungal skin infections affect approximately 1 billion people each year. Most infections are treated with topical antifungal agents. Other infections, e.g., tinea capitis and onychomycosis, require use of oral antifungal agents that may produce significant side effects in some patients. Laboratory confirmation of fungal infection prior to use of antifungal agents is recommended but often not done due, in part, to the time and cost of laboratory testing. The goal of this study was to develop a lateral flow immunoassay (LFIA) for rapid diagnosis of dermatophytosis. Materials/methods: Monoclonal antibody (mAb) 2DA6 was produced from splenocytes of mice immunized with fungal cell wall fragments. Hybridomas were generated using standard methods. Results: A LFIA was constructed from mAb 2DA6 for detection of mannans of dermatophyte fungi in clinical samples. The antibody is reactive with the alpha-1,6 mannose backbone in mannans of fungi of the Zygomycota and the Ascomycota. However, mAb 2DA6 has an exquisite sensitivity for mannans of dermatophytes and the Zygomycota due to an apparent low level of side chain substitution found on these mannans vs. high levels of side chain substitution that occludes the backbone in mannans of other fungi. -
Studies on Fungi Associated with Storage Rot of Carrot
DOI: 10.21276/sajb.2016.4.10.15 Scholars Academic Journal of Biosciences (SAJB) ISSN 2321-6883 (Online) Sch. Acad. J. Biosci., 2016; 4(10B):880-885 ISSN 2347-9515 (Print) ©Scholars Academic and Scientific Publisher (An International Publisher for Academic and Scientific Resources) www.saspublisher.com Original Research Article Studies on Fungi Associated with Storage Rot of Carrot (Daucus carota L.) and Radish (Raphanus sativas L.) in Odisha, India Khatoon Akhtari1, Mohapatra Ashirbad2, Satapathy Kunja Bihari1* 1Post Graduate, Department of Botany, Utkal University, Vani Vihar, Bhubaneswar-751004, Odisha, India 2Sri Jayadev College of Education and Technology, Naharkanta, Bhubaneswar-752101, Odisha, India *Corresponding author Satapathy Kunja Bihari Email: [email protected] Abstract: An extensive survey on fungi associated with post-harvest deterioration of carrot and radish storage roots was conducted during 2014-2015 in different market places of Odisha, India. Rotten samples were collected from five different localities such as Bhubaneswar, Cuttack, Jajpur, Puri, Balasore and Bhadrak. Three fungal species such as Aspergillus niger, Geotrichum candidum and Rhizopus oryzae were isolated from the rotten samples. Of these, Geotrichum candidum has highest percentage frequency of occurrence in both carrot and radish. In carrot next to Geotrichum candidum, Rhizopus oryzae showed more frequency of occurrence than Aspergillus niger but in case of radish the case is just opposite, here the percentage frequency of occurrence of Aspergillus niger was found to be more than Rhizopus oryzae. Pathogenicity tests revealed that all the isolated fungi were pathogenic to their respective host storage roots. However, Rhizopus oryzae was found to be most pathogenic on carrot leading to rapid disintegration of the infected roots while Geotrichum candidum was the least pathogenic. -
First Record of Rhizopus Oryzae from Stored Apple Fruits in Saudi Arabia
Plant Pathology & Quarantine 8(2): 116–121 (2018) ISSN 2229-2217 www.ppqjournal.org Article Doi 10.5943/ppq/8/2/2 Copyright ©Agriculture College, Guizhou University First record of Rhizopus oryzae from stored apple fruits in Saudi Arabia Al-Dhabaan FA Department of Biology, Science and Humanities College Alquwayiyah, Shaqra University, Saudi Arabia Al-Dhabaan FA 2018 – First record of Rhizopus oryzae from stored apple fruits in Saudi Arabia. Plant Pathology & Quarantine 8(2), 116–121, Doi 10.5943/ppq/8/2/2 Abstract During spring 2017, red delicious and Granny Smith apples with soft rot symptoms were collected from commercial markets in Saudi Arabia. The causal agent was isolated from infected fruits and its pathogenicity was confirmed by inoculation assays. To confirm the identity, total genomic DNA was extracted and multi-locus sequence data targeting two gene markers (ITS, ACT) was sequenced. Phylogenetic analysis confirmed the presence of two distinct clades; Saudi isolate was placed within a clade comprising Rhizopus oryzae and R. delemar reference isolates. Based on morphological characteristics, molecular identification and pathogenicity test, the fungus was identified as Rhizopus oryzae. This is the first report of Rhizopus soft rot caused by R. oryzae from stored apple fruits in Saudi Arabia. Key words – Rhizopus soft rot – phylogeny – pathogenicity – morphological characters – sequence data Introduction Rhizopus soft rot caused by Rhizopus oryzae occurs worldwide and reduces the quantity and quality of harvested vegetables and ornamental crops during storage, transit, and marketing (Amadioha 1996, 2001, Agrios 2005). Rhizopus soft rot is one of the most important postharvest diseases of apple, banana, watermelon, sweet potato and other hosts in Korea (Kwon et al. -
New and Emerging Yeast Pathogens KEVIN C
CLINICAL MICROBIOLOGY REVIEWS, Oct. 1995, p. 462–478 Vol. 8, No. 4 0893-8512/95/$04.0010 Copyright q 1995, American Society for Microbiology New and Emerging Yeast Pathogens KEVIN C. HAZEN* Division of Clinical Microbiology, Department of Pathology, University of Virginia Health Sciences Center, Charlottesville, Virginia 22908 INTRODUCTION .......................................................................................................................................................462 DEFINITION OF NEW OR EMERGING YEAST PATHOGENS ......................................................................462 WHICH YEASTS ARE NEW OR EMERGING PATHOGENS? .........................................................................463 ANATOMIC SITES ATTACKED BY YEASTS.......................................................................................................464 HISTOPATHOLOGY .................................................................................................................................................466 TREATMENT OF INFECTIONS DUE TO UNUSUAL YEASTS .......................................................................466 Catheter Removal ...................................................................................................................................................466 Antifungal Therapy.................................................................................................................................................469 MICROBIOLOGICAL IDENTIFICATION ............................................................................................................469 -
25 Chrysosporium
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Universidade do Minho: RepositoriUM 25 Chrysosporium Dongyou Liu and R.R.M. Paterson contents 25.1 Introduction ..................................................................................................................................................................... 197 25.1.1 Classification and Morphology ............................................................................................................................ 197 25.1.2 Clinical Features .................................................................................................................................................. 198 25.1.3 Diagnosis ............................................................................................................................................................. 199 25.2 Methods ........................................................................................................................................................................... 199 25.2.1 Sample Preparation .............................................................................................................................................. 199 25.2.2 Detection Procedures ........................................................................................................................................... 199 25.3 Conclusion .......................................................................................................................................................................200 -
Common Tinea Infections in Children Mark D
Common Tinea Infections in Children MARK D. ANDREWS, MD, and MARIANTHE BURNS, MD Wake Forest University School of Medicine, Winston-Salem, North Carolina The common dermatophyte genera Trichophyton, Microsporum, and Epidermophyton are major causes of superficial fungal infections in children. These infections (e.g., tinea corporis, pedis, cruris, and unguium) are typically acquired directly from contact with infected humans or animals or indirectly from exposure to contaminated soil or fomi- tes. A diagnosis usually can be made with a focused history, physical examination, and potassium hydroxide micros- copy. Occasionally, Wood’s lamp examination, fungal culture, or histologic tissue examination is required. Most tinea infections can be managed with topical therapies; oral treatment is reserved for tinea capitis, severe tinea pedis, and tinea unguium. Topical therapy with fungicidal allylamines may have slightly higher cure rates and shorter treatment courses than with fungistatic azoles. Although oral griseofulvin has been the standard treatment for tinea capitis, newer oral antifungal agents such as terbinafine, itraconazole, and fluconazole are effective, safe, and have shorter treatment courses. (Am Fam Physician. 2008;77(10):1415-1420. Copyright © 2008 American Academy of Family Physicians.) inea refers to dermatophyte infec- tinea infections.1,2,4,5 This technique directly tions, which are generally classified shows hyphae and confirms infection. The by anatomic location: tinea capitis specimen is examined under the microscope is located on the scalp, tinea pedis after a drop of 10 to 20 percent KOH solu- T on the feet, tinea corporis on the body, tinea tion is added to the scraping from the active cruris on the groin, and tinea unguium on border of the lesion.