Volume 129, Issue 4 pp. 380-383
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The quantification of free sphingosine in the stratum corneum of patients with hereditary ichthyosis

D.G. PAIGE

D.G. PAIGE

Department of Dermatology, Hospital for Sick Children, Great Ormond Street, London, U.K.

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N. MORSE-FISHER

N. MORSE-FISHER

Efamol Research Inc., Kentville, Nova Scotia, Canada

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J.I. HARPER

Corresponding Author

J.I. HARPER

Department of Dermatology, Hospital for Sick Children, Great Ormond Street, London, U.K.

Dr J.I.Harper, Dermatology Department, Hospital for Sick Children, Great Ormond Street, London WCIN 3JH, U.K.Search for more papers by this author
First published: October 1993
Citations: 5

Summary

Sphingosine is a long-chain base which provides the back-bone of all sphingolipid molecules. Free sphingosine is found in normal epidermis, especially in the stratum corneum. As a free molecule it may modify epidermal cell proliferation and differentiation through its inhibition of protein kinase C. Using a thin-layer chromatography technique we have demonstrated in vitro that the erythrodermic ichthyoses show significantly lower levels of stratum corneum sphingosine than the non-erythrodermic types. The exact in vivo significance of this finding is unclear, but free sphingosine may have an important role in determining the inflammatory component of the hereditary ichthyoses.

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