UVB-Induced Conversion of 7-Dehydrocholesterol to 1α,25-Dihydroxyvitamin D3 in an In Vitro Human Skin Equivalent Model
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چکیده
منابع مشابه
Provitamin D3 in tissues and the conversion of cholesterol to 7-dehydrocholesterol in vivo.
The discovery that the absorption bands at 293, 281-5 and 271 m,u. (Heilbron, Kamm & Morton, 1926, 1927) present in fractions obtained in the recrystallization of cholesterol were shown very strongly by ergosterol (Rosenheim & Webster, 1927) focused interest on the latter and culminated in the isolation ofcalciferol (vitamin D2). Some time later it was recognized that 7-dehydrocholesterol was a...
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با توجه به تحریم های بین المملی علیه صنعت بیمه ایران امکان استفاده از بازارهای بین المملی بیمه ای برای نفتکش های ایرانی وجود ندارد. از طرفی از آنجایی که یکی از نوآوری های اخیر استفاده از بازارهای مالی به منظور ریسک های فاجعه آمیز می باشد. از اینرو در این پایان نامه سعی شده است با استفاده از این نوآوری ها با طراحی اوراق اختیارات راهی نو جهت بیمه گردن نفت کش های ایرانی ارائه نمود. از آنجایی که بر...
Human Skin Equivalent Model
Skin, the largest organ in the body, performs many important roles including protection against physical and chemical insults, regulation of temperature and fluid loss, and immunity and sensory roles. Once damaged, skin cannot perform these normal tasks and numerous complications such as infection or fluid loss can occur. To restore these roles, the body needs to close the wound as quickly as p...
متن کاملA novel pathway for hormonally active calcitriol.
Calcitriol [1alpha,25(OH)2D3], the hormonally active form of vitamin D3 (D3) is produced in both renal and extrarenal tissues. Our findings demonstrate that physiological doses of UVB radiation at 300 nm induce the conversion of 7-dehydrocholesterol (7-DHC) via preD3 and D3 into calcitriol in the pmol range in epidermal keratinocytes. The hydroxylation of photosynthesized D3 to calcitriol is st...
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ژورنال
عنوان ژورنال: Journal of Investigative Dermatology
سال: 2001
ISSN: 0022-202X
DOI: 10.1046/j.0022-202x.2001.01538.x