| Comparative immunohistochemical analyses on the modes of cell death/keratinization in epidermal cyst, trichilemmal cyst, and pilomatricoma. | |
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MedLine Citation:
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PMID: 21048491 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Keratinization is a kind of cell death called terminal differentiation and includes various patterns such as epidermal keratinization (EK), trichilemmal keratinization (TK), and shadow cell differentiation (SCD), whereas these have not been comparatively investigated from a standpoint of cell death. In the present study, surgically extirpated specimens of epidermal cyst, trichilemmal cyst, and pilomatricoma (10 cases in each) were subjected to immunohistochemistry for single-strand DNA (ssDNA), gamma-H2AX, cleaved caspase-3, cleaved lamin A, caspase-14, and CD138 to compare the modes of cell death and keratinization pattern. Transitional cells in pilomatricoma were immunoreactive, although not in whole part, for ssDNA and gamma-H2AX, and negative for cleaved caspase-3 and cleaved lamin A. Epidermal and trichilemmal cyst were negative for these 4 markers, except for ssDNA or cleaved lamin A in a small number of parakeratotic cells in a few cases. The keratinizing component showed caspase-14(+)/CD138(-) in epidermal cyst, caspase-14(-)/CD138(+) in trichilemmal cyst, and caspase-14(-)/CD138(-) in pilomatricoma. These results indicate that EK, TK, and SCD have a common property of apoptosis-like programmed cell death without caspase-3 activation or nuclear fragmentation. Meanwhile, they show different characteristics one another as follows: (A), DNA double-strand breaks occur in the transitional cells of SCD but not in EK/TK; and (B), EK, TK, and SCD can be distinguished by expression pattern of caspase-14 and CD138 in the keratinizing component. |
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Authors:
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Toshitsugu Nakamura |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The American Journal of dermatopathology Volume: 33 ISSN: 1533-0311 ISO Abbreviation: Am J Dermatopathol Publication Date: 2011 Feb |
Date Detail:
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Created Date: 2011-01-17 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7911005 Medline TA: Am J Dermatopathol Country: United States |
Other Details:
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Languages: eng Pagination: 78-83 Citation Subset: IM |
Affiliation:
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From the Department of Pathology, Suwa Red Cross Hospital, Suwa, Japan. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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