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The enzyme 11β‐hydroxysteroid dehydrogenase (11β‐HSD) catalyzes the interconversion between hormonally active cortisol and inactive cortisone within cells. There are two isozymes: 11β‐HSD1 activates cortisol from cortisone and 11β‐HSD2 inactivates cortisol to cortisone. 11β‐HSD1 was recently discovered in skin, and we subsequently found that the enzyme negatively regulates keratinocyte proliferation...
A high incidence of skin cancers has been noted around the Semipalatinsk Nuclear Testing Site (SNTS) in Kazakhstan. Recently, basal cell carcinoma (BCC) susceptibility genes, human homolog of the Drosophila pathed gene (PTCH), and the xeroderma pigmentosa group A-complementing gene (XPA), have been cloned and localized on chromosome 9q22.3. To clarify the effect of low-dose irradiation on the occurrence...
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