189 results match your criteria Malassezia Pityrosporum Folliculitis


Susceptibilities of strains from pityriasis versicolor, Malassezia folliculitis and seborrheic dermatitis to antifungal drugs.

Heliyon 2020 Jun 20;6(6):e04203. Epub 2020 Jun 20.

Department of Dermatology, First Affiliated Hospital of Kunming Medical University, 295 Xichang Road, Kunming, 650032, Yunnan, China.

The human pathogenic yeast genus may be an etiological agent of skin disorders and has received considerable attention from dermatologists in recent years. To investigate the different susceptibilities of species to four antifungal drugs, we isolated a total of 244 strains and identified six species of from patients with clinical skin diseases. The minimum inhibitory concentration (MIC) of the four antifungal drugs was obtained by comparing the susceptibility of the isolated strains to four antifungal drugs (ketoconazole (KTZ), itraconazole (ITZ), fluconazole (FLC) and amphotericin B (Am B)). Read More

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http://dx.doi.org/10.1016/j.heliyon.2020.e04203DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7322256PMC

as a Novelty Model of Host-Pathogen Interaction for CBS 1878 and CBS 1879.

Front Cell Infect Microbiol 2020 5;10:199. Epub 2020 May 5.

Grupo de Investigación Celular y Molecular de Microorganismos Patógenos (CeMoP), Departamento de Ciencias Biológicas, Universidad de los Andes, Bogotá, Colombia.

and are lipophilic and lipid dependent yeasts, associated with the skin microbiota in humans and domestic animals, respectively. Although they are commensals, under specific conditions they become pathogens, causing skin conditions, such as pityriasis versicolor, dandruff/seborrheic dermatitis, folliculitis in humans, and dermatitis and otitis in dogs. Additionally, these species are associated with fungemia in immunocompromised patients and low-weight neonates in intensive care units with intravenous catheters or with parenteral nutrition and that are under-treatment of broad-spectrum antibiotics. Read More

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http://dx.doi.org/10.3389/fcimb.2020.00199DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7214729PMC

Diagnostic evaluation of a point-of-care test for culture and microbial susceptibility testing in canine dermatological infections in clinical practice.

Vet World 2020 Mar 20;13(3):521-529. Epub 2020 Mar 20.

Department of Veterinary Medicine (DIMEVET), University of Milan, via dell'Università 6, 26900 Lodi, Italy.

Background And Aim: Empirical antimicrobial therapy is frequently given in superficial bacterial folliculitis (SBF) and otitis externa (OE) in dogs, especially for the initial clinical presentation. Culture and subsequent antimicrobial susceptibility testing (AST) are generally limited to chronic cases with poor response to initial therapy. Several factors contribute to the failure to implement the use of AST in veterinary practice, i. Read More

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http://dx.doi.org/10.14202/vetworld.2020.521-529DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7183461PMC

An update on pityrosporum folliculitis in Singapore from a single tertiary care dermatological centre.

Singapore Med J 2020 Apr 29. Epub 2020 Apr 29.

Division of Dermatology, University Medicine Cluster, National University Hospital, Singapore.

Introduction: Pityrosporum folliculitis (PF) is a common skin condition that can be misdiagnosed, especially by non-dermatologists. While the diagnosis is often made clinically, skin microscopy may be used to confirm the same. There is scant literature on the clinical epidemiology of PF globally. Read More

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http://dx.doi.org/10.11622/smedj.2020068DOI Listing

Oral treatment with/without topical treatment vs topical treatment alone in Malassezia Folliculitis patients: A systematic review and meta-analysis.

Dermatol Ther 2020 May 8;33(3):e13460. Epub 2020 May 8.

Department of Dermatology and Venereology, 401 General Military Hospital of Athens, Athens, Greece.

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http://dx.doi.org/10.1111/dth.13460DOI Listing

-Associated Skin Diseases, the Use of Diagnostics and Treatment.

Front Cell Infect Microbiol 2020 20;10:112. Epub 2020 Mar 20.

St. Johns Institute of Dermatology, Kings College London, London, United Kingdom.

Yeasts of the genus, , formerly known as , are lipophilic yeasts, which are a part of the normal skin flora (microbiome). colonize the human skin after birth and must therefore, as commensals, be normally tolerated by the human immune system. The yeasts also have a pathogenic potential where they can, under appropriate conditions, invade the stratum corneum and interact with the host immune system, both directly but also through chemical mediators. Read More

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http://dx.doi.org/10.3389/fcimb.2020.00112DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7098993PMC

Clinical and histological recovery of non-thymoma-associated exfoliative dermatitis in a cat treated with ciclosporin A.

JFMS Open Rep 2020 Jan-Jun;6(1):2055116920902307. Epub 2020 Feb 11.

Department of Clinical Sciences, Université de Toulouse, ENVT, Toulouse, France; UDEAR, Université de Toulouse, INSERM, ENVT, Toulouse, France.

Case Summary: A 6-year-old neutered female European Shorthair cat was referred for chronic, moderately pruritic, alopecic and exfoliative dermatosis that was unresponsive to antiparasitic, antibiotic or steroidal anti-inflammatory drugs. The cat presented with truncular alopecia and numerous whitish adherent scales covering the whole body. Differential diagnoses included sebaceous adenitis, dermatophytosis, demodicosis, exfoliative dermatitis associated or not with thymoma, drug reaction, feline immunodeficiency virus- or feline leukaemia virus-associated dermatoses, epitheliotropic T-cell lymphoma, and yeasts and/or bacterial overgrowth. Read More

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http://dx.doi.org/10.1177/2055116920902307DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7013115PMC
February 2020

Molecular epidemiology, susceptibility and exoenzyme screening of clinical isolates.

J Med Microbiol 2020 Mar;69(3):436-442

Department of Dermatology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, PR China.

folliculitis (MF) and pityriasis versicolor (PV) are common dermatoses caused by species. Their molecular epidemiology, drug susceptibility and exoenzymes are rarely reported in China. To investigate the molecular epidemiology, drug susceptibility and enzymatic profile of clinical isolates. Read More

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http://dx.doi.org/10.1099/jmm.0.001161DOI Listing
March 2020
2.248 Impact Factor

Malassezia (Pityrosporum) Folliculitis Incognito: Malessezia-associated Folliculitis Masked by Topical Corticosteroid Therapy.

Cureus 2020 Jan 1;12(1):e6531. Epub 2020 Jan 1.

Dermatology/Dermatopathology, Compass Dermatopathology, Inc., San Diego, USA.

Malassezia (Pityrosporum) folliculitis usually appears as pruritic monomorphous papules and pustules on the upper back, chest, extensor arms and face. Acne vulgaris, bacterial folliculitis, eosinophilic folliculitis and systemic corticosteroid-induced acne can clinically mimic the fungal-caused acneiform condition. The designation incognito is used to describe tinea or scabies when the characteristic presentation is masqueraded by the application of topical corticosteroid treatment. Read More

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http://dx.doi.org/10.7759/cureus.6531DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6993079PMC
January 2020

Critical synthesis of available data in Malassezia folliculitis and a systematic review of treatments.

J Eur Acad Dermatol Venereol 2020 Feb 3. Epub 2020 Feb 3.

Department of Dermatology, Zealand University Hospital, Roskilde, Denmark.

Folliculitis is an inflammatory process involving the hair follicle, frequently attributed to infectious causes. Malassezia, an established symbiotic yeast that can evolve to a skin pathogen with opportunistic attributes, is a common source of folliculitis, especially when intrinsic (e.g. Read More

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http://dx.doi.org/10.1111/jdv.16253DOI Listing
February 2020

Antifungal activity of different essential oils against Malassezia pathogenic species.

J Ethnopharmacol 2020 Mar 6;249:112376. Epub 2019 Nov 6.

University of Florence, Department of Chemistry Ugo Schiff, Sesto Fiorentino, Florence, Italy. Electronic address:

Ethnopharmacological Relevance: Plants produce essential oils in response to physiological stresses, pathogen attacks and ecological factors. Nowadays, they are recognized as defence compounds and attractors of pollinators. Essential oils have been traditionally used in the past years in various cultures for medicinal and health purposes. Read More

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http://dx.doi.org/10.1016/j.jep.2019.112376DOI Listing

Clinicopathological differentiation between Pityrosporum folliculitis and acneiform eruption.

J Dermatol 2019 Nov 5;46(11):978-984. Epub 2019 Sep 5.

Department of Dermatology, College of Medicine, Hallym University, Anyang, Korea.

Distinguishing between Malassezia folliculitis (Pityrosporum folliculitis [P. folliculitis]) and acneiform eruption, based on clinicopathological features, is challenging for clinicians. In the literature, the histopathological differences between P. Read More

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https://onlinelibrary.wiley.com/doi/abs/10.1111/1346-8138.15
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http://dx.doi.org/10.1111/1346-8138.15070DOI Listing
November 2019
4 Reads

Clinical differences in pediatric and adult Malassezia folliculitis: Retrospective analysis of 321 cases over 9 years.

J Am Acad Dermatol 2019 07 15;81(1):278-280. Epub 2019 Mar 15.

Department of Dermatology, MacKay Memorial Hospital, Taipei, Taiwan. Electronic address:

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http://dx.doi.org/10.1016/j.jaad.2019.03.014DOI Listing
July 2019
7 Reads

[Clinical problems in medical mycology: problem number 53].

Rev Iberoam Micol 2019 Apr - Jun;36(2):93-95. Epub 2019 Mar 9.

Unidad de Micología, Hospital de Infecciosas Francisco Javier Muñiz, Buenos Aires, Argentina.

A 21 year-old man, HIV infected, and with poor adherence to antiretroviral treatment, consulted us due to a papular rash on trunk and extremities, showing simultaneously hypochromic stains on his back. He was afebrile and hemodynamically stable. In the mycological study of the clinical samples taken from different lesions, yeasts compatible with Malassezia were observed. Read More

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http://dx.doi.org/10.1016/j.riam.2019.02.001DOI Listing
February 2020
12 Reads

Treatment of Selected Canine Dermatological Conditions in Portugal - A Research Survey.

J Vet Res 2018 Dec 31;62(4):563-570. Epub 2018 Dec 31.

Department of Veterinary Sciences, Escola de Ciências Agrárias e Veterinárias, University of Trás-os-Montes and Alto Douro (UTAD), 5001-801 Vila Real, Portugal.

Introduction: and often cause skin diseases in dogs.

Material And Methods: An online survey was e-mailed to veterinary practices nationwide covering demographics, diagnosis methods, and oral and topical treatment options. Of the 740 surveys sent, 100 complete replies were obtained. Read More

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http://dx.doi.org/10.2478/jvetres-2018-0058DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6364160PMC
December 2018
13 Reads

A case of necrotizing infundibular crystalline folliculitis.

Int J Dermatol 2019 Jul 24;58(7):846-848. Epub 2018 Sep 24.

Department of Pathology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea.

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http://dx.doi.org/10.1111/ijd.14258DOI Listing
July 2019
6 Reads

Dermoscopy of pityrosporum folliculitis.

J Am Acad Dermatol 2019 02 20;80(2):e43-e44. Epub 2018 Sep 20.

Department of Dermatology and STD, North Delhi Municipal Corporation Medical College and Hindu Rao Hospital, New Delhi, India.

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https://linkinghub.elsevier.com/retrieve/pii/S01909622183259
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http://dx.doi.org/10.1016/j.jaad.2018.08.057DOI Listing
February 2019
42 Reads
4.450 Impact Factor

Malassezia: a case of coexisting pityriasis versicolor and Malassezia folliculitis.

Singapore Med J 2020 Apr 21;61(4):221. Epub 2018 Jun 21.

Department of General Medicine, Sengkang General Hospital, Singapore.

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http://www.smj.org.sg/sites/default/files/LE-2016-381-epub.p
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http://dx.doi.org/10.11622/smedj.2018079DOI Listing
April 2020
17 Reads

The Prevalence of Folliculitis in Patients with Papulopustular/Comedonal Acne, and Their Response to Antifungal Treatment.

Skinmed 2018;16(2):99-104. Epub 2018 Apr 1.

Department of Dermatology, Baskent University Faculty of Medicine, Ankara, Turkey.

Because folliculitis (MF) may clinically mimic acne vulgaris (AV), patients usually receive unnecessary and prolonged antibiotic treatment. We aimed to determine the prevalence of MF among patients with AV, and to evaluate its response to antifungal treatment. A total of 217 patients with AV underwent cytologic examination for the presence of yeasts. Read More

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October 2019
36 Reads

In vivo characterization of pustules in Malassezia Folliculitis by reflectance confocal microscopy and optical coherence tomography. A case series study.

Skin Res Technol 2018 Nov 27;24(4):535-541. Epub 2018 Feb 27.

Department of Dermatology, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark.

Background And Objective: Malassezia Folliculitis (MaF) is an inflammatory condition of hair follicles caused by Malassezia yeast. Optical coherence tomography (OCT) and reflectance confocal microscopy (RCM) are imaging technologies enabling in vivo visualization of superficial skin layers. This study explores morphology of pustules in MaF imaged by OCT and RCM. Read More

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http://dx.doi.org/10.1111/srt.12463DOI Listing
November 2018
26 Reads

Atypical clinical presentations of Malassezia folliculitis: a retrospective analysis of 94 biopsy-proven cases.

Int J Dermatol 2018 03 4;57(3):e19-e20. Epub 2018 Jan 4.

Department of Dermatology, MacKay Memorial Hospital, Taipei, Taiwan.

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http://dx.doi.org/10.1111/ijd.13880DOI Listing
March 2018
25 Reads

Pityrosporum folliculitis: A retrospective review of 110 cases.

J Am Acad Dermatol 2018 03 11;78(3):511-514. Epub 2017 Nov 11.

Department of Dermatology, University of Massachusetts Medical School, Worcester, Massachusetts.

Background: Pityrosporum folliculitis is an under-recognized eruption of the face and upper portion of the trunk that may be confused with, or occur simultaneously with, acne vulgaris.

Objective: We sought to characterize risk factors for Pityrosporum folliculitis, its clinical presentation, and its response to treatment.

Methods: A retrospective chart review was performed on all patients age 0 to 21 years seen at our facility from 2010 to 2015 with Pityrosporum folliculitis confirmed by a potassium hydroxide preparation. Read More

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http://dx.doi.org/10.1016/j.jaad.2017.11.022DOI Listing
March 2018
47 Reads

Utility of Gram staining for diagnosis of Malassezia folliculitis.

J Dermatol 2018 Feb 13;45(2):228-231. Epub 2017 Nov 13.

Department of Dermatology, Taipei Medical University Shuang Ho Hospital, New Taipei City, Taiwan.

Malassezia folliculitis (MalF) mimics acne vulgaris and bacterial folliculitis in clinical presentations. The role of Gram staining in rapid diagnosis of MalF has not been well studied. In our study, 32 patients were included to investigate the utility of Gram staining for MalF diagnosis. Read More

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http://doi.wiley.com/10.1111/1346-8138.14120
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http://dx.doi.org/10.1111/1346-8138.14120DOI Listing
February 2018
19 Reads
2.354 Impact Factor

An unresponsive progressive pustular and crusting dermatitis with acantholysis in nine cats.

Vet Dermatol 2018 Feb 6;29(1):81-e33. Epub 2017 Oct 6.

Department of Veterinary Medicine and Epidemiology, School of Veterinary Medicine, University of California, One Shields Avenue, Davis, CA, 95616, USA.

Background: Between 2000 and 2012, nine cats were examined with a visually distinctive, progressive crusting dermatitis that was poorly responsive to all attempted therapies.

Objectives: Documentation of clinical and histopathological findings of this disease.

Animals: Nine privately owned cats. Read More

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http://dx.doi.org/10.1111/vde.12501DOI Listing
February 2018
56 Reads

Overexpression of NLRP3, NLRC4 and AIM2 inflammasomes and their priming-associated molecules (TLR2, TLR4, Dectin-1, Dectin-2 and NFκB) in Malassezia folliculitis.

Mycoses 2018 Feb 13;61(2):111-118. Epub 2017 Oct 13.

Department of Dermatology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China.

The activation of NLRP3, NLRC4 and AIM2 inflammasomes is pivotal for innate immunity against some pathogenic fungi, but their role in the pathogenesis of Malassezia folliculitis (MF) remains unclear. The objective of the study was to determine the expression of 4 canonical inflammasomes (NLRP1, NLRP3, NLRC4 and AIM2) and their priming-associated molecules (TLR2, TLR4, Dectin-1, Dectin-2 and NFκB) in MF lesion. Expression of NLRP1, NLRP3, NLRC4, AIM2, caspase-1, IL-1β, TLR2, TLR4, Dectin-1, Dectin-2 and NFκB was detected by immunohistochemistry in skin lesion of 23 MF patients and normal skin of 12 healthy subjects. Read More

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http://doi.wiley.com/10.1111/myc.12711
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http://dx.doi.org/10.1111/myc.12711DOI Listing
February 2018
90 Reads

Lipid Metabolic Versatility in spp. Yeasts Studied through Metabolic Modeling.

Front Microbiol 2017 14;8:1772. Epub 2017 Sep 14.

Department of Biological Sciences, Universidad de los AndesBogotá, Colombia.

species are lipophilic and lipid-dependent yeasts belonging to the human and animal microbiota. Typically, they are isolated from regions rich in sebaceous glands. They have been associated with dermatological diseases such as seborrheic dermatitis, pityriasis versicolor, atopic dermatitis, and folliculitis. Read More

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http://dx.doi.org/10.3389/fmicb.2017.01772DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5603697PMC
September 2017
55 Reads

Real-Time PCR Identification of Six Malassezia Species.

Curr Microbiol 2017 Jun 22;74(6):671-677. Epub 2017 Mar 22.

Fungal and Parasitic Molecular Biology Laboratory, Faculty of Medicine, University of Sfax, Rue Magida Boulila, Sfax, 3029, Tunisia.

Lipophilic yeast Malassezia species is widely found on the skin surface of humans and other animals. This fungus can cause pityriasis versicolor, Malassezia folliculitis, and seborrheic dermatitis. Still now, there is a problem with species identification of Malassezia with conventional methods. Read More

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http://dx.doi.org/10.1007/s00284-017-1237-7DOI Listing
June 2017
23 Reads

Molecular Identification of Malassezia Species in Patients with Malassezia folliculitis in Sfax, Tunisia.

Mycopathologia 2017 Jun 20;182(5-6):583-589. Epub 2017 Jan 20.

Laboratory of Molecular Biology of Parasite and Fungy, Medical Institute, Sfax University, Sfax, Tunisia.

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. Read More

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http://dx.doi.org/10.1007/s11046-017-0113-0DOI Listing
June 2017
7 Reads

Treatment Outcomes for Malassezia Folliculitis in theDermatology Department of a University Hospital in Japan.

Med Mycol J 2016 ;57(3):E63-6

Department of Dermatology, Teikyo University Hospital.

Topical or systemic antifungal therapy was administered to patients diagnosed with Malassezia folliculitis during the 5-year period between March 2007 and October 2013. The diagnosis of Malassezia folliculitis was established on the basis of characteristic clinical features and direct microscopic findings (10 or more yeast-like fungi per follicle). Treatment consisted of topical application of 2% ketoconazole cream or 100 mg oral itraconazole based on symptom severity and patients' preferences. Read More

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http://dx.doi.org/10.3314/mmj.16-00003DOI Listing
June 2017
22 Reads

Oral Antifungal Drugs in the Treatment of Dermatomycosis.

Authors:
Yuichiro Tsunemi

Med Mycol J 2016 ;57(2):J71-5

Department of Dermatology, Tokyo Women's Medical University.

Oral antifungal drugs are used primarily to treat tinea unguium; however, they are also useful for other types of tinea. For example, a combination of topical and oral antifungal drugs is effective in hyperkeratotic tinea pedis that is unresponsive to topical monotherapy. In cases of tinea facialis adjacent to the eyes, ears, or mouth, or widespread tinea corporis, or tinea cruris involving the complex skin folds of the external genitalia, it is difficult to apply topical drugs to all the lesions; therefore, oral antifungal drugs are necessary. Read More

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http://dx.doi.org/10.3314/mmj.57.J71DOI Listing
June 2017
34 Reads

When Acne is Not Acne.

Dermatol Clin 2016 Apr;34(2):225-8

Department of Dermatology, Icahn School of Medicine at Mount Sinai, 5 East 98 Street, 5th Floor, New York, NY 10029, USA.

Acne vulgaris (AV) is considered a straightforward diagnosis made clinically without specific diagnostic testing. However, certain disorders may simulate AV, such as multiple small epidermal cysts or deep milia, multiple osteoma cutis, multiple small adnexal neoplasms, and follicular and/or infections characterized by multiple small papules and/or pustules such as gram-positive folliculitis, gram-negative folliculitis, Malassezia folliculitis, keratosis pilaris, and flat warts. This can lead to an erroneous diagnosis and improper management. Read More

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http://dx.doi.org/10.1016/j.det.2015.12.002DOI Listing
April 2016
53 Reads

Fungal folliculitis masquerading as acute exanthematous pustulosis.

Cleve Clin J Med 2016 Mar;83(3):179-80

Head, Section of Industrial Dermatology, Department of Dermatology, Cleveland Clinic, Cleveland, OH, USA.

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http://dx.doi.org/10.3949/ccjm.83a.15028DOI Listing
March 2016
8 Reads

Progress in Malassezia Research in Korea.

Ann Dermatol 2015 Dec 7;27(6):647-57. Epub 2015 Dec 7.

Department of Dermatology, Konkuk University School of Medicine, Seoul, Korea.

Yeasts of the genus Malassezia are part of the normal flora of human skin. However, they are also associated with various skin diseases. Since the introduction of Malassezia to the Korean Dermatologic Society two decades ago, remarkable progress has been made in our knowledge of this genus. Read More

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http://dx.doi.org/10.5021/ad.2015.27.6.647DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4695415PMC
December 2015
15 Reads

Malassezia species in healthy skin and in dermatological conditions.

Int J Dermatol 2016 May 29;55(5):494-504. Epub 2015 Dec 29.

Institute of Pathology, Faculty of Medicine, University of Sarajevo, Sarajevo, Bosnia and Herzegovina.

The genus Malassezia comprises lipophilic species, the natural habitat of which is the skin of humans and other warm-blooded animals. However, these species have been associated with a diversity of dermatological disorders and even systemic infections. Pityriasis versicolor is the only cutaneous disease etiologically connected to Malassezia yeasts. Read More

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http://dx.doi.org/10.1111/ijd.13116DOI Listing
May 2016
21 Reads

[2011 Epidemiological Survey of Dermatomycoses in Japan].

Authors:
Yoshihiro Sei

Med Mycol J 2015 ;56(4):J129-35

Epidemiological Investigation Committee for Human Mycoses in the Japanese Society for Medical Mycology, Chairman and Reporter.

An epidemiological survey of dermatomycoses and their causative fungus flora in Japan for 2011 was conducted in accordance with methods and criteria of the past four surveys. The survey covered a total number of 36,052 outpatients who visited 12 dermatological clinics throughout Japan. The results were as follows. Read More

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http://dx.doi.org/10.3314/mmj.56.J129DOI Listing
December 2016
36 Reads

Clinical and Laboratory Features of Six Cases of Candida and Dermatophyte Folliculitis and a Review of Published Studies.

Mycopathologia 2016 Feb 4;181(1-2):97-105. Epub 2015 Sep 4.

Department of Medical Microbiology, Radboud UMC, Nijmegen, The Netherlands.

Although some studies have investigated the epidemiological characteristics of Malassezia folliculitis (MF), little is known about the clinical features and laboratory characteristics of folliculitis caused by other fungi. In this prospective study, 158 patients with folliculitis were identified, and cytological and mycological examinations were performed. The positive fungal cultures were confirmed using conventional methods, ITS sequencing and HWP1 analysis. Read More

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http://dx.doi.org/10.1007/s11046-015-9939-5DOI Listing
February 2016
21 Reads

[Cutaneous Malassezia infections and Malassezia associated dermatoses: An update].

Hautarzt 2015 Jun;66(6):465-84; quiz 485-6

Labor für medizinische Mikrobiologie, Partnerschaft Prof. Dr. med. Pietro Nenoff & Dr. med. Constanze Krüger, Straße des Friedens 8, 04579, Mölbis, Deutschland,

The lipophilic yeast fungus Malassezia (M.) spp. is the only fungal genus or species which is part of the physiological human microbiome. Read More

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http://dx.doi.org/10.1007/s00105-015-3631-zDOI Listing
June 2015
10 Reads

Malassezia species and their associated skin diseases.

J Dermatol 2015 Mar;42(3):250-7

Department of Dermatology, Tokyo Medical University, Tokyo, Japan.

Malassezia spp. are lipophilic fungi that occur on all skin surfaces of humans and animals as commensal and pathogenic organisms. In the 2000s, several new species were added to the Malassezia genus by Japanese researchers. Read More

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http://doi.wiley.com/10.1111/1346-8138.12700
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http://dx.doi.org/10.1111/1346-8138.12700DOI Listing
March 2015
31 Reads

Comparison between Malassezia Folliculitis and Non-Malassezia Folliculitis.

Ann Dermatol 2014 Oct 26;26(5):598-602. Epub 2014 Sep 26.

Department of Dermatology, Ajou University School of Medicine, Suwon, Korea.

Background: Among the various types of folliculitis, differentiation of Malassezia folliculitis (MF) from other forms of folliculitis is important because it is usually treated with antifungal agents.

Objective: We attempted to find a method to enhance the detection rate of MF, and examined the differences in the clinical manifestation between MF and non-MF (NMF).

Methods: We performed a retrospective study involving patients with folliculitis who were previously diagnosed with MF or NMF on the basis of serial tissue sectioning and diastase-Periodic acid-Schiff (d-PAS) staining findings. Read More

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http://dx.doi.org/10.5021/ad.2014.26.5.598DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4198587PMC
October 2014
22 Reads

Malassezia yeasts activate the NLRP3 inflammasome in antigen-presenting cells via Syk-kinase signalling.

Exp Dermatol 2014 Dec;23(12):884-9

Department of Dermatology, University Hospital, Zürich, Switzerland.

Although being a normal part of the skin flora, yeasts of the genus Malassezia are associated with several common dermatologic conditions including pityriasis versicolour, seborrhoeic dermatitis (SD), folliculitis, atopic eczema/dermatitis (AE/AD) and dandruff. While Malassezia spp. are aetiological agents of pityriasis versicolour, a causal role of Malassezia spp. Read More

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http://dx.doi.org/10.1111/exd.12552DOI Listing
December 2014
19 Reads

Skin Colonization by Malassezia spp. in hospitalized neonates and infants in a tertiary care centre in North India.

Mycopathologia 2014 Oct 19;178(3-4):267-72. Epub 2014 Jul 19.

Mycology Division, Department of Medical Microbiology, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, 160012, India.

Malassezia, a skin colonizer, is associated with multiple skin disorders in adults, and cephalic pustulosis and folliculitis in children. It can cause fungemia in infants and neonates. The time and pattern of colonization, risk factors associated with colonization and causing fungemia in children, are not well understood. Read More

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http://dx.doi.org/10.1007/s11046-014-9788-7DOI Listing
October 2014
27 Reads

Malassezia (pityrosporum) folliculitis.

J Clin Aesthet Dermatol 2014 Mar;7(3):37-41

Lake Erie College of Osteopathic Medicine, Bradenton, Florida.

Malassezia (Pityrosporum) folliculitis is a fungal acneiform condition commonly misdiagnosed as acne vulgaris. Although often associated with common acne, this condition may persist for years without complete resolution with typical acne medications. Malassezia folliculitis results from overgrowth of yeast present in the normal cutaneous flora. Read More

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3970831PMC
March 2014
12 Reads

An outbreak of Candida albicans folliculitis masquerading as Malassezia folliculitis in a prison population.

J Correct Health Care 2014 Apr;20(2):154-62

1University of Texas Medical Branch, Galveston, TX, USA.

Several inmates from a non-air-conditioned prison were sent to the University of Texas Medical Branch dermatology clinic for unexplained eruptions not responding to various treatments. They were initially diagnosed with Malassezia folliculitis based on clinical examination and histological findings. The patients' cultures from skin scrapings, however, revealed Candida albicans confirmed by growth on Mycosel agar and further by the germ tube production method. Read More

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http://dx.doi.org/10.1177/1078345813518636DOI Listing
April 2014
10 Reads

Chemical organization of the cell wall polysaccharide core of Malassezia restricta.

J Biol Chem 2014 May 13;289(18):12647-56. Epub 2014 Mar 13.

From the Unité des Aspergillus, Institut Pasteur, 25 rue du Docteur Roux, 75724 Paris cedex, France.

Malassezia species are ubiquitous residents of human skin and are associated with several diseases such as seborrheic dermatitis, tinea versicolor, folliculitis, atopic dermatitis, and scalp conditions such as dandruff. Host-Malassezia interactions and mechanisms to evade local immune responses remain largely unknown. Malassezia restricta is one of the most predominant yeasts of the healthy human skin, its cell wall has been investigated in this paper. Read More

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http://www.jbc.org/lookup/doi/10.1074/jbc.M113.547034
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http://dx.doi.org/10.1074/jbc.M113.547034DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4007454PMC
May 2014
34 Reads

Malassezia infections: a medical conundrum.

J Am Acad Dermatol 2014 Jul 22;71(1):170-6. Epub 2014 Feb 22.

Department of Microbiology, Faculty of Medicine, University of Porto, Porto, Portugal.

Malassezia yeasts have long been considered commensal fungi, unable to elicit significant damage. However, they have been associated with a diversity of cutaneous diseases, namely pityriasis versicolor, Malassezia folliculitis, seborrheic dermatitis, atopic dermatitis, psoriasis, and confluent and reticulate papillomatosis. Several hypotheses have been proposed to explain the pathogenic mechanisms of these fungi, but none have been confirmed. Read More

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http://dx.doi.org/10.1016/j.jaad.2013.12.022DOI Listing
July 2014
10 Reads

Evidence-based Danish guidelines for the treatment of Malassezia-related skin diseases.

Acta Derm Venereol 2015 Jan;95(1):12-9

Department of Dermatology, Bispebjerg University Hospital, DK-2400 Copenhagen NV, Denmark.

Internationally approved guidelines for the diagnosis and management of Malassezia-related skin diseases are lacking. Therefore, a panel of experts consisting of dermatologists and a microbiologist under the auspices of the Danish Society of Dermatology undertook a data review and compiled guidelines for the diagnostic procedures and management of pityriasis versicolor, seborrhoeic dermatitis and Malassezia folliculitis. Main recommendations in most cases of pityriasis versicolor and seborrhoeic dermatitis include topical treatment which has been shown to be sufficient. Read More

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http://dx.doi.org/10.2340/00015555-1825DOI Listing
January 2015
13 Reads

Malassezia skin diseases in humans.

G Ital Dermatol Venereol 2013 Dec;148(6):609-19

Division of Dermatology Department of Surgery and Translational Medicine University of Florence, Florence, Italy -

Although Malassezia yeasts are a part of the normal microflora, under certain conditions they can cause superficial skin infection, such as pityriasis versicolor (PV) and Malassezia folliculitis. Moreover the yeasts of the genus Malassezia have been associated with seborrheic dermatitis and dandruff, atopic dermatitis, psoriasis, and, less commonly, with confluent and reticulated papillomatosis, onychomycosis, and transient acantholytic dermatosis. The study of the clinical role of Malassezia species has been surrounded by controversy due to the relative difficulty in isolation, cultivation, and identification. Read More

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December 2013
25 Reads

Malassezia folliculitis in an infant.

Med Mycol Case Rep 2013 Mar 1;2:72-4. Epub 2013 Mar 1.

Department of Dermatology, Charles Nicolle hospital, Tunis, Tunisia.

Malassezia folliculitis commonly affects the adolescents and the young adults. We describe an unusual case of Malassezia folliculitis which is particular in age of patient and scare evolution of lesions. The patient was a three-month-old immuno-competent boy. Read More

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http://dx.doi.org/10.1016/j.mmcr.2013.02.005DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3885948PMC
March 2013
10 Reads

Necrotizing Infundibular Crystalline Folliculitis: A Case Report of an Exceptional Lesion of Unknown Etiology.

Dermatopathology (Basel) 2014 Jan-Jul;1(1):3-6. Epub 2014 Jan 9.

Dermatopathology Unit, Department of Dermatology, University Hospital of Geneva, Geneva, Switzerland.

Necrotizing infundibular crystalline folliculitis is a rare follicular lesion of which the etiology is not well understood. Here we describe the case of a 71-year-old male patient presenting with multiple hyperkeratotic lesions localized on the forehead. Histopathological analysis of one of the lesions revealed a follicular invagination containing cellular debris and keratin lamellae containing filamentous mucinous material and numerous crystals birefringent in polarized light microscopy. Read More

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http://dx.doi.org/10.1159/000357157DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4772923PMC
April 2016
21 Reads