b12維他命高單位 相關
廣告維他命B12能增進神經系統的健康,幫助入睡、滋補強身。同時也是素食者的營養補給,幫助飲食均衡. 維他命B12的食物,如文蛤、牛肉、鮮乳等,能增進神經系統的健康、幫助入睡
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Vitamin B12, also known as cobalamin, is a water-soluble vitamin involved in metabolism.[2] It is one of eight B vitamins. It is required by animals, which use it as a cofactor in DNA synthesis, and in both fatty acid and amino acid metabolism.[3] It is important in the normal functioning of the nervous system via its role in the synthesis of ...
- Readily absorbed in distal half of the ileum.
- liver
- C₆₃H₈₈CoN₁₄O₁₄P
Hydroxocobalamin, also known as vitamin B12a and hydroxycobalamin, is a vitamin found in food and used as a dietary supplement.[1] As a supplement it is used to treat vitamin B12 deficiency including pernicious anemia.[1][2] Other uses include treatment for cyanide poisoning, Leber's optic atrophy, and toxic amblyopia.[3][4] It is given by ...
- C₆₂H₈₉CoN₁₃O₁₅P
- Very high (90%)
- Primarily liver, cobalamins are absorbed in the ileum and stored in the liver.
- IM, IV
In molecular biology, the vitamin B12-binding domain is a protein domain which binds to cobalamin (vitamin B12). It can bind two different forms of the cobalamin cofactor, with cobalt bonded either to a methyl group (methylcobalamin) or to 5'-deoxyadenosine
Serum vitamin B12. Serum vitamin B12 is a medical laboratory test that measure vitamin B 12 only in the blood binding to both transcobalamins. [1] Most of the time, 80–94% of vitamin B 12 in the blood binds to haptocorrin, while only 6–20% is binds to transcobalamin ll. [2] Only transcobalamin ll is "active" and can be used by the body. [1]
In enzymology, a vitamin B12-transporting ATPase ( EC 3.6.3.33) is an enzyme that catalyzes the chemical reaction. ATP + H 2 O + vitamin B 12out. ⇌ {\displaystyle \rightleftharpoons } ADP + phosphate + vitamin B 12in.
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In Wikidata. Vitamins are organic molecules (or a set of closely related molecules called vitamers) that are essential to an organism in small quantities for proper metabolic function. Essential nutrients cannot be synthesized in the organism in sufficient quantities for survival, and therefore must be obtained through the diet.
Metformin, sold under the brand name Glucophage, among others, is the main first-line medication for the treatment of type 2 diabetes,[12][13][14][15] particularly in people who are overweight.[13] It is also used in the treatment of polycystic ovary syndrome.[14] It is sometimes used as an off-label adjunct to lessen the risk of metabolic ...