Distribution of <i>Malassezia</i> species in patients with psoriasis and healthy individuals in Tehran, Iran

Zomorodian, Kamiar; Mirhendi, Hosssien; Tarazooie, Bita; Zeraati, Hojjat; Hallaji, Zahra; Balighi, Kamran

doi:10.1111/j.1600-0560.2007.00968.x

Cited by 26 publications

(34 citation statements)

References 41 publications

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“…In addition, M. sympodialis was isolated more frequently than what has been reported by many Iranian investigators expressing that this species is known as the third or fourth frequented species (6,15,17,21). We couldn't isolate any M. obtusa and M. restricta in this study, although in other studies in Iran these species were isolated in at a very low frequency.…”

Section: Discussionmentioning

confidence: 52%

“…However, some reports have also linked M. furfur, M. sympodialis, M. obtusa, and M. slooffiae with seborrheic dermatitis. Our data about the epidemiology of PV in Iran is limited in some regions such as Tehran, Kashan, Ahvaz and Mazandaran (6,(15)(16)(17)(18). Also there are evidences suggesting that the geographical variations of the spe-cies are available.…”

Section: Introductionmentioning

confidence: 99%

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Distribution of Malassezia Species in Patients with Pityriasis versicolor Compared with Healthy Individuals in Yazd, Iran

Jafari

Zarrinfar

Mirzaei

et al. 2013

Jundishapur J Microbiol

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Background: Malassezia species as skin microflora of humans and other warm-blooded vertebrates are the lipophilic yeasts associated with various human diseases, especially pityriasis versicolor (PV). Objectives: The objective of this study was to identify the Malassezia species of scraped skin of PV patients in Yazd, Iran, using morphological, biochemical and physiological methods. We also compared the obtained results of PV patients with normal healthy volunteers. Materials and Methods: A total of 200 persons, including 100 patients (with skin lesion) referred to Yazd Central Laboratory and 100 healthy volunteers as controls, were evaluated for Malassezia infection by morphological and biochemical methods. Results:The most commonly isolated species from PV lesions, were M. globosa (38.3%), M. furfur (29.4%), M. sympodialis (14.9%), M. pachydermatis (9.6%) and M. slooffiae (5.3%). Also the most commonly isolated species from healthy skins were M. furfur (37.2%), M. globosa (25.6%), M. sympodialis (16.3%), M. pachydermatis (13.9%) and M. slooffiae (4.6%). Totally M. globosa and M. furfur were the most frequented isolated. Conclusion: Highest prevalence of PV in our study was observed in the 20 -39 years old group, suggesting that the peak of the infection is coincided with ages and increasing sebum production in the highest level. M. globosa was the most commonly isolated Malassezia species of the patients group and M. furfur is the most common isolated species obtained from normal individuals skin samples. We couldn't find any significant differences between groups. The rate of isolated Malassezia species from patients was higher than normal individuals.

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Section: Discussionmentioning

confidence: 52%

Section: Introductionmentioning

confidence: 99%

Distribution of Malassezia Species in Patients with Pityriasis versicolor Compared with Healthy Individuals in Yazd, Iran

Jafari

Zarrinfar

Mirzaei

et al. 2013

Jundishapur J Microbiol

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“…There are five reports of the successful use of 26S rDNA PCR-RFLP for the identification of Malassezia species [13][14][15][16][17] .…”

Section: Discussionmentioning

confidence: 99%

Distribution ofMalasseziaSpecies on the Scalp in Korean Seborrheic Dermatitis Patients

et al. 2011

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Background:Malassezia species play an important role in the pathogenesis of seborrheic dermatitis. In particular, M. restricta and M. globosa are considered to be the predominant organisms in seborrheic dermatitis of Western countries. However, species distribution of Malassezia in seborrheic dermatitis has not been clearly determined yet in Asia. Objective: To identify the distribution of Malassezia species on the scalp of seborrheic dermatitis patients in Korea using 26S rDNA PCR-RFLP analysis. Methods: A total of 40 seborrheic dermatitis patients and 100 normal healthy volunteers were included in this study. For the identification of Malassezia species, the scalp scales of the subjects were analyzed by 26S rDNA PCR-RFLP analysis. Results: The most commonly identified Malassezia species were M. restricta in the seborrheic dermatitis patients, and M. globosa in the normal controls. In the seborrheic dermatitis group, M. restricta was identified in 47.5%, M. globosa in 27.5%, M. furfur in 7.5%, and M. sympodialis in 2.5% of patients. In the healthy control group, M. globosa was identified in 32.0%, M. restricta in 25.0%, M. furfur in 8.0%, M. obtusa in 6.0%, M. slooffiae in 6.0%, and M. sympodialis in 4.0% of subjects. Conclusion: M. restricta is considered to be the most important Malassezia species in Korean seborrheic dermatitis patients. (Ann Dermatol 23(2) 156∼161, 2011)

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“…As mentioned above, epidemiological data on the distribution of Malassezia species in psoriasis lesional skin are contradictory (Tables 6 and 7), and diminished Malassezia numbers have been reported for healthy-looking and lesional skin of psoriasis patients (243,244,353). Also, pathogenic strains, like those established for pityriasis versicolor, atopic eczema, and seborrheic dermatitis, have not been found in cases of psoriasis (244).…”

Section: Psoriasismentioning

confidence: 97%

“…More than 20 studies (Tables 3 to 6) have been carried out worldwide on the epidemiology of Malassezia species in cases of pityriasis versicolor, seborrheic dermatitis, atopic eczema, and psoriasis and on healthy control skin of the same individuals or skin from healthy volunteers (53,63,89,112,122,146,171,173,180,185,228,237,255,259,275,286,344,353). Results are not directly comparable between studies, as different methodologies, isolation media, and identification procedures have been employed.…”

Section: Culture-based Epidemiologymentioning

confidence: 99%

The Malassezia Genus in Skin and Systemic Diseases

et al. 2012

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SUMMARY In the last 15 years, the genus Malassezia has been a topic of intense basic research on taxonomy, physiology, biochemistry, ecology, immunology, and metabolomics. Currently, the genus encompasses 14 species. The 1996 revision of the genus resulted in seven accepted taxa: M. furfur , M. pachydermatis , M. sympodialis , M. globosa , M. obtusa , M. restricta , and M. slooffiae. In the last decade, seven new taxa isolated from healthy and lesional human and animal skin have been accepted: M. dermatis , M. japonica , M. yamatoensis , M. nana , M. caprae , M. equina , and M. cuniculi. However, forthcoming multidisciplinary research is expected to show the etiopathological relationships between these new species and skin diseases. Hitherto, basic and clinical research has established etiological links between Malassezia yeasts, pityriasis versicolor, and sepsis of neonates and immunocompromised individuals. Their role in aggravating seborrheic dermatitis, dandruff, folliculitis, and onychomycosis, though often supported by histopathological evidence and favorable antifungal therapeutic outcomes, remains under investigation. A close association between skin and Malassezia IgE binding allergens in atopic eczema has been shown, while laboratory data support a role in psoriasis exacerbations. Finally, metabolomic research resulted in the proposal of a hypothesis on the contribution of Malassezia -synthesized aryl hydrocarbon receptor (AhR) ligands to basal cell carcinoma through UV radiation-induced carcinogenesis.

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Distribution of Malassezia species in patients with psoriasis and healthy individuals in Tehran, Iran

Abstract: Considering the higher lipase activity secretion by M. furfur in comparison with other Malassezia species, the enzymatic release of arachidonic acid and its metabolites by M. furfur may exacerbate the inflammatory and hyperproliferative changes observed in psoriasis.

Cited by 26 publications

References 41 publications

Distribution of Malassezia Species in Patients with Pityriasis versicolor Compared with Healthy Individuals in Yazd, Iran

Distribution of Malassezia Species in Patients with Pityriasis versicolor Compared with Healthy Individuals in Yazd, Iran

Distribution ofMalasseziaSpecies on the Scalp in Korean Seborrheic Dermatitis Patients

The Malassezia Genus in Skin and Systemic Diseases

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