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The absorption of vitamin D is monitored by various factors such as vitamin D protein transporter, nuclear vitamin D binding protein, enzyme involved in fat digestion, bile secretion, liver enzyme catalyzing vitamin D. Literature has described the key role of genetic variations in modulating serum level 25(OH)D (Fu et al. 2009). It is clear now ...
- Vitamin D - StatPearls - NCBI Bookshelf
In the absence of vitamin D, approximately 10 to 15% of...
- Vitamin D: Production, Metabolism and Mechanisms of Action
The level of vitamin D intake and achieved serum levels of...
- Vitamin D - StatPearls - NCBI Bookshelf
9 Απρ 2023 · In the absence of vitamin D, approximately 10 to 15% of dietary calcium and 60% of phosphorus are absorbed. In the presence of vitamin D, this percentage of absorption is increased to 30% to 40% for calcium and 80% for phosphorus. In the kidneys, 1,25-dihydroxy vitamin promotes calcium reabsorption.
31 Δεκ 2021 · The level of vitamin D intake and achieved serum levels of 25(OH)D that are optimal and safe for skeletal health and the non-skeletal actions remain controversial, but are likely between an intake of 800-2000IU vitamin D in the diet and 20-50ng/ml 25(OH)D in the blood.
Vitamin D promotes calcium absorption in the gut and maintains adequate serum calcium and phosphate concentrations to enable normal bone mineralization and to prevent hypocalcemic tetany (involuntary contraction of muscles, leading to cramps and spasms). It is also needed for bone growth and bone remodeling by osteoblasts and osteoclasts ...
14 Φεβ 2021 · Proper absorption of vitamin D enables your body to in turn absorb calcium, fight infection, and keeps your nervous system and muscles working as they should.
Dietary vitamin D is absorbed in the upper part of the small intestine in much the same way as are other fat-soluble compounds. 3,4 It enters the circulation primarily through the thoracic duct in the chylomicron fraction, after which it associates with an α-globulin fraction in the blood.
For Vit. D risk group patients, particularly obese individuals or those having weight >90 kg as well as persons with malabsorption syndromes, Vit. D dose should be increased two-fold or sometimes even three-fold [12,16,24,35,40,46,48,56,57]. It is noteworthy that Vit.
