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[Free and esterified epidermal cholesterol in psoriasis]

E S Fortinskaia, T I Torkhovskaia, G Ia Sharapova

    Vestnik Rossiiskoi Akademii Meditsinskikh Nauk
    |January 1, 1995
    PubMed
    Summary

    Psoriatic patients exhibit significantly higher skin cholesterol levels compared to healthy individuals. This increase in epidermal cholesterol is observed in both lesional and non-lesional skin, with esterified cholesterol decreasing in severe cases.

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    Area of Science:

    • Dermatology
    • Biochemistry
    • Lipid Metabolism

    Background:

    • Psoriasis is a chronic inflammatory skin condition.
    • Altered lipid metabolism may play a role in psoriasis pathogenesis.
    • Epidermal cholesterol levels in psoriasis require further investigation.

    Purpose of the Study:

    • To quantify epidermal total, free, and esterified cholesterol in psoriatic patients.
    • To compare cholesterol levels between lesional and non-lesional psoriatic skin.
    • To compare psoriatic skin cholesterol levels with those of healthy controls.

    Main Methods:

    • Non-invasive surface extraction method used for lipid isolation.
    • Quantification of cholesterol in micrograms per square centimeter.
    • Study included 56 psoriatic patients and 11 healthy controls.

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    Main Results:

    • Epidermal total, free, and esterified cholesterol levels were 2-4 times higher in psoriatic patients than in healthy subjects.
    • Similar elevated cholesterol levels were found in both lesional and normally appearing psoriatic epidermis.
    • The proportion of esterified cholesterol decreased, particularly in non-lesional skin of severe psoriasis cases.

    Conclusions:

    • Elevated epidermal cholesterol is a characteristic feature of psoriasis.
    • Cholesterol metabolism alterations are present in psoriatic skin, affecting both lesional and non-lesional areas.
    • The decrease in esterified cholesterol may indicate altered lipid processing in psoriasis.