Abstract
Transforming growth factor α (TGF-α) is produced by and required for the growth of epithelial cells and is angiogenic in vivo. Since epidermal hyperplasia and angiogenesis are hallmarks of psoriasis, TGF-α gene expression was analyzed in epidermal biopsies of normal and psoriatic skin. TGF-α messenger RNA and protein are much more abundant in lesional psoriatic epidermis than in normal-appearing skin of psoriatic patients or in normal epidermis. In contrast, messenger RNA levels of transforming growth factor β1 (TGF-β1), which inhibits epithelial cell growth, are not significantly different in normal, uninvolved, and lesional psoriatic epidermis. Thus, psoriatic epidermal hyperplasia may involve increased expression of a keratinocyte mitogen (TGF-α) rather than deficient expression of a growth inhibitor (TGF-β1).
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Dates
Type | When |
---|---|
Created | 18 years, 10 months ago (Oct. 5, 2006, 5:21 p.m.) |
Deposited | 1 year, 7 months ago (Jan. 13, 2024, 4:20 a.m.) |
Indexed | 3 weeks, 3 days ago (Aug. 1, 2025, 11:59 p.m.) |
Issued | 36 years, 6 months ago (Feb. 10, 1989) |
Published | 36 years, 6 months ago (Feb. 10, 1989) |
Published Print | 36 years, 6 months ago (Feb. 10, 1989) |
@article{Elder_1989, title={Overexpression of Transforming Growth Factor α in Psoriatic Epidermis}, volume={243}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.2916128}, DOI={10.1126/science.2916128}, number={4892}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={Elder, James T. and Fisher, Gary J. and Lindquist, Patricia B. and Bennett, Gregory L. and Pittelkow, Mark R. and Coffey, Robert J. and Ellingsworth, Larry and Derynck, Rik and Voorhees, John J.}, year={1989}, month=feb, pages={811–814} }