| Integral hair lipid in human hair follicle. | |
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MedLine Citation:
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PMID: 21906914 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Integral hair lipid (IHL) is bound to the keratinized cell surface to make an environmentally resistant lipid envelope. It is mainly positioned on the hair cuticle and inner root sheath. IHL in the hair follicle may regard as hair barrier to be similar to the epidermal lipid layer functioning as skin barrier. Major constituents of IHL are fatty acid, phytosphingosine, ceramide in decreasing order. Minor constituents of IHL are cholesterol, cholesterol sulfate and cholesterol oleate. Cuticle or cortical cell surface in hair are abundant in fatty acids unlike the keratinized area of epidermis or sebaceous gland, and about 30-40% of such fatty acids are composed of 18-methyl-eicosanoic acid which is known to be bound to proteins by ester or thioester bond. Various factors including moisture, solvent, oxidative damage during bleaching or permanent waving affect IHL. Photochemical changes also can occur in IHL as well as in hair protein and hair pigment. Lipid metabolism is thought to play an essential role in lipid envelope of hair, but also involvement in hair development and function. |
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Authors:
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Won-Soo Lee |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-8-22 |
Journal Detail:
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Title: Journal of dermatological science Volume: - ISSN: 1873-569X ISO Abbreviation: - Publication Date: 2011 Aug |
Date Detail:
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Created Date: 2011-9-12 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9011485 Medline TA: J Dermatol Sci Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011 Japanese Society for Investigative Dermatology. Published by Elsevier Ireland Ltd. All rights reserved. |
Affiliation:
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Department of Dermatology and Institute of Hair and Cosmetic Medicine, Yonsei University, Wonju College of Medicine, 162 Ilsan-Dong, Wonju, Kangwon-Do 220-701, Republic of Korea. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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