Studies on Pityriasis Versicolor in Egypt:

El-Hefnawi, H; El-Gothamy, Zenab; Refai, M.

doi:10.1111/j.1439-0507.1971.tb03041.x

Cited by 20 publications

(13 citation statements)

References 12 publications

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“…The characterization data support the fact that the compound belongs to actinomycin D (Fig 3).Mass spectral data were compatible with actinomycin D, as recorded by Lackner et al, (2000).Around 19 species ofStreptomyces (Kurosawa et al, 2006;Praveen, 2008), Micromonospora (Wagman, 1976) and Nocardia (El-Refai, 2011)reported are capable of producing various forms of actinomycins. …”

Section: Extraction and Purification Of Compoundsupporting

confidence: 62%

Purification of Actinomycin D from Streptomyces parvulus Isolated from Mangrove Ecosystem of Kerala, India

Cibi¹,

Nair²

2016

Int.J.Curr.Microbiol.App.Sci

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Section: Extraction and Purification Of Compoundsupporting

confidence: 62%

Purification of Actinomycin D from Streptomyces parvulus Isolated from Mangrove Ecosystem of Kerala, India

Cibi¹,

Nair²

2016

Int.J.Curr.Microbiol.App.Sci

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“…However, the prevalence of this common skin disease is greater in the third and fourth decades of life, and its appearance is significantly affected by environmental factors such as temperature and humidity, patient immune status, and genetic predisposition. The annual incidence of pityriasis versicolor has been reported to range from 5.2% to 8.3% (93). Seasonal variations, although not consistent, are observed, with the highest incidence rates in September (314), spring and fall (55), or summer months (144).…”

Section: Pityriasis Versicolormentioning

confidence: 97%

“…Seasonal variations, although not consistent, are observed, with the highest incidence rates in September (314), spring and fall (55), or summer months (144). If not corrected for these variations, records on the prevalence of pityriasis versicolor in a population may be affected, but nevertheless, this disease is significantly more common in tropical and subtropical climates (93). The prevalence of the disease falls drastically in more temperate climates, as it was diagnosed in only 2.1% of young healthy males (mean age, 22 years) in Italy (156), with even lower rates in Sweden (0.5% of males and 0.3% of females) (147).…”

Section: Pityriasis Versicolormentioning

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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“…In subjects less than 15 years and more than45 years, the frequency was 50% and 64% respectively. These differences have been attributed by many authors to the increase of sebum excretion and skin surface lipids (5,7,8). No difference in frequency was observed between the two sex groups.…”

Section: Discussionmentioning

confidence: 77%

The Frequency of Pityrosporum Orbiculare as a Skin Commensal Among an Israeli Population

Friedman‐Birnbaum

Lefler

Haim

et al. 2009

Mycoses

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Summary: The frequency of Pityrosporum orbiculare as a skin commensal among israeli population was studied. Out of 74 subjects studied 51 (68.9%) gave positive results. However, the frequency of positive cases was not equally shared by the different age groups studied. It was positive in 77.1% of people between 15 and 45 years, while the positive results among younger and older subjects were 50% and 64.2% respectively. No difference in frequency was observed between the two sex groups. Zusammenfassung: Untersuchung über die Häufigkeit von P. orbiculare als kommensaler Hautkeim in einer israelischen Bevölkerungsgruppe. Von 74 untersuchten Personen zeigten 51 (68, 9%) ein positives Resultat. Die Verteilung der positiven Nachweise war in verschiedenen Altersgruppen ungleich. Am höchsten lagen die Werte in der Gruppe mit einem Alter zwischen 15 und 45 Jahren: 77, 1%. Jüngere bzw. ältere Probanden waren mit 50% hzw. 64, 2% seltener befallen. Zwischen den Geschlechtern bestand kein Unterschied in der Häufigkeit des Befalls.

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Studies on Pityriasis Versicolor in Egypt:

Cited by 20 publications

References 12 publications

Purification of Actinomycin D from Streptomyces parvulus Isolated from Mangrove Ecosystem of Kerala, India

Purification of Actinomycin D from Streptomyces parvulus Isolated from Mangrove Ecosystem of Kerala, India

The Malassezia Genus in Skin and Systemic Diseases

The Frequency of Pityrosporum Orbiculare as a Skin Commensal Among an Israeli Population

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