Vitamin d steroid wikipedia

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A 2008 study that was published in the American Medical Association's Archives of Internal Medicine was able to show that the risk of death from all causes can be decreased by 26 percent with vitamin D supplementation.  The study tracked 13,331 healthy people for nine years and correlated their causes of death and their vitamin D levels - it was found that those with the highest levels of vitamin D had a 26 percent lower chance of dying.  The researchers said "Our results make it much more clear that all men and women concerned about thier overall health should more closely monitor their blood levels of vitamin D, and make sure they have enough."

Phosphate homeostasis is preserved during variations in phosphate intake by short-term intrinsic renal and intestinal adaptations in transport processes, and by more long-term hormonal mechanisms, which regulate the efficiency of phosphate transport in the kidney and intestine. Recently, several phosphaturic peptides such as fibroblast growth factor 23 (FGF-23), secreted frizzled-related protein-4 (sFRP-4), extracellular phosphoglycoprotein (MEPE) and fibroblast growth factor 7 (FGF-7) have been shown to play a pathogenic role in several hypophosphatemic disorders such as tumor-induced osteomalacia (TIO), autosomal dominant hypophosphatemic rickets (ADHR), X-linked hypophosphatemic rickets (XLH), the McCune-Albright syndrome (MAS) and fibrous dysplasia (FD). These proteins induce phosphaturia and hypophosphatemia in vivo, and inhibit sodium-dependent renal phosphate transport in cultured renal epithelial cells. Interestingly, despite the induction of hypophosphatemia by FGF-23 and sFRP-4 in vivo, serum 1, 25-dihydroxyvitamin D (1alpha,25(OH)(2)D) concentrations are decreased or remain inappropriately normal, suggesting an inhibitory effect of these proteins on 25-hydroxyvitamin D 1alpha-hydroxylase activity. In FGF-23 knockout mice, 25-hydroxyvitamin D 1alpha-hydroxylase expression is increased and elevated serum 1alpha,25(OH)(2)D levels cause significant hypercalcemia and hyperphosphatemia. MEPE, however, increases circulating 1alpha,25(OH)(2)D. Circulating or local concentrations of these peptides/proteins may regulate 25-hydroxyvitamin D 1alpha-hydroxylase activity in renal tissues under physiologic circumstances.

10. Cannel, MD, John Jacob, "The Truth About Vitamin D Toxicity," http:///. Published September 4, 2003. Accessed May 24, 2006. 11. Rosenfeld, Louis, "Vitamine - vitamin. The early years of discovery," Clinical Chemistry, Vol. 43 No. 4 (1997) 680-685. 12. DeLuca, Hector F., "Historical Overview," in Feldman et al., eds., Vitamin D, San Diego: Academic Press (1997) 3-11. 13. Dobs, et al., "Effects of pravastatin, a new HMG-CoA reductase inhibitor, on vitamin D synthesis in man," Metabolism, Vol. 40 No. 5 (1991) 524-8. 14. Folkers, et al., "Lovastatin decreases coenzyme Q levels in humans," Proc Natl Acad Sci USA Vol. 87 No. 22 (1990) 8931-4. 15. Heaney, Robert P., "The Vitamin D requirement in health and disease," Journal of Steroid Biochemistry & Molecular Biology, 97 (2005)13-19. 16. Cannel, MD, John Jacob, "The Vitamin D Newsletter: April 2006 -- Dr. Cannell Answers Readers' Questions," Vitamin D Council: http:///PDFs/April2006-. Published April 1, 2006. Accessed May 25, 2006. 17. Masterjohn, Chris, "Vitamin A on Trial: Does Vitamin A Cause Osteoporosis?" Wise Traditions , Spring 2006.

Vitamin d steroid wikipedia

vitamin d steroid wikipedia

10. Cannel, MD, John Jacob, "The Truth About Vitamin D Toxicity," http:///. Published September 4, 2003. Accessed May 24, 2006. 11. Rosenfeld, Louis, "Vitamine - vitamin. The early years of discovery," Clinical Chemistry, Vol. 43 No. 4 (1997) 680-685. 12. DeLuca, Hector F., "Historical Overview," in Feldman et al., eds., Vitamin D, San Diego: Academic Press (1997) 3-11. 13. Dobs, et al., "Effects of pravastatin, a new HMG-CoA reductase inhibitor, on vitamin D synthesis in man," Metabolism, Vol. 40 No. 5 (1991) 524-8. 14. Folkers, et al., "Lovastatin decreases coenzyme Q levels in humans," Proc Natl Acad Sci USA Vol. 87 No. 22 (1990) 8931-4. 15. Heaney, Robert P., "The Vitamin D requirement in health and disease," Journal of Steroid Biochemistry & Molecular Biology, 97 (2005)13-19. 16. Cannel, MD, John Jacob, "The Vitamin D Newsletter: April 2006 -- Dr. Cannell Answers Readers' Questions," Vitamin D Council: http:///PDFs/April2006-. Published April 1, 2006. Accessed May 25, 2006. 17. Masterjohn, Chris, "Vitamin A on Trial: Does Vitamin A Cause Osteoporosis?" Wise Traditions , Spring 2006.

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