D3維他命 相關
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搜尋結果
Vitamin D is a group of fat-soluble secosteroids responsible for increasing intestinal absorption of calcium, magnesium, and phosphate, and for many other biological effects. [1] [2] In humans, the most important compounds in this group are vitamin D 3 ( cholecalciferol) and vitamin D 2 ( ergocalciferol ). [2] [3]
Vitamin D deficiency or hypovitaminosis D is a vitamin D level that is below normal. It most commonly occurs in people when they have inadequate exposure to sunlight, particularly sunlight with adequate ultraviolet B rays (UVB).
Function. The VDR gene encodes the nuclear hormone receptor for vitamin D. The most potent natural agonist is calcitriol (1,25-dihydroxycholecalciferol) and the vitamin D 2 homologue ercalcitriol, 1-alpha,25-dihydroergocalciferol) is also a strong activator.
Cholecalciferol (vitamin D3) appears to stimulate the body's interferon type I signaling system that protects against bacteria and viruses, unlike vitamin D 2. For psoriasis, cream that includes vitamin D3 can have a good effect, or UVB phototherapy. Vitamin D
The first of these (also known as 25-hydroxy vitamin D3) is made by the body, or is sourced from certain animal foods or cholecalciferol supplements. The second (25-hydroxy vitamin D2) is from certain vegetable foods or ergocalciferol supplements.
Ergocalciferol is a secosteroid formed by a photochemical bond breaking of a steroid, specifically, by the action of ultraviolet light (UV-B or UV-C) on ergosterol, a form of provitamin D 2. [19] Like cholecalciferol, ergocalciferol is inactive by itself.
Dopamine receptor D3 is a protein that in humans is encoded by the DRD3 gene. [5] [6] This gene encodes the D 3 subtype of the dopamine receptor. The D 3 subtype inhibits adenylyl cyclase through inhibitory G-proteins.
D3維他命 相關
廣告過去一個月已有 超過 1 萬 位使用者造訪過 bhks.com.tw
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In today’s toxic environment, supplements are not simply a good idea, they are necessary. Dr. Al Sears, MD. is one of the first physicians board-certified in anti-aging medicine.
