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Matti Narkia

Vitamin D2 Is as Effective as Vitamin D3 in Maintaining Circulating Concentrations of 2... - 0 views

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    Vitamin D2 is as effective as vitamin D3 in maintaining circulating concentrations of 25-hydroxyvitamin D. Holick MF, Biancuzzo RM, Chen TC, Klein EK, Young A, Bibuld D, Reitz R, Salameh W, Ameri A, Tannenbaum AD. J Clin Endocrinol Metab. 2008 Mar;93(3):677-81. Epub 2007 Dec 18. PMID: 18089691 Conclusion: A 1000 IU dose of vitamin D2 daily was as effective as 1000 IU vitamin D3 in maintaining serum 25-hydroxyvitamin D levels and did not negatively influence serum 25-hydroxyvitamin D3 levels. Therefore, vitamin D2 is equally as effective as vitamin D3 in maintaining 25-hydroxyvitamin D status.
Matti Narkia

Vitamin D Deficiency and Seasonal Variation in an Adult South Florida Population -- Lev... - 0 views

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    Vitamin d deficiency and seasonal variation in an adult South Florida population. Levis S, Gomez A, Jimenez C, Veras L, Ma F, Lai S, Hollis B, Roos BA. J Clin Endocrinol Metab. 2005 Mar;90(3):1557-62. Epub 2005 Jan 5. PMID: 15634725 The prevalence of hypovitaminosis D is considerable even in southern latitudes and should be taken into account in the evaluation of postmenopausal and male osteoporosis.
Matti Narkia

Low Vitamin D Status, High Bone Turnover, and Bone Fractures in Centenarians -- Passeri... - 0 views

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    Low vitamin D status, high bone turnover, and bone fractures in centenarians. Passeri G, Pini G, Troiano L, Vescovini R, Sansoni P, Passeri M, Gueresi P, Delsignore R, Pedrazzoni M, Franceschi C. J Clin Endocrinol Metab. 2003 Nov;88(11):5109-15. PMID: 14602735 We conclude that the extreme decades of life are characterized by a pathophysiological sequence of events linking vitamin D deficiency, low serum calcium, and secondary hyperparathyroidism with an increase in bone resorption and severe osteopenia. These data offer a rationale for the possible prevention of elevated bone turnover, bone loss, and consequently the reduction of osteoporotic fractures and fracture-induced disability in the oldest olds through the supplementation with calcium and vitamin D.
Matti Narkia

Vitamin D, Nutritional Deficiency, and the Medical Paradigm -- Heaney 88 (11): 5107 -- ... - 0 views

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    Vitamin D, nutritional deficiency, and the medical paradigm. Heaney RP. J Clin Endocrinol Metab. 2003 Nov;88(11):5107-8. Review. No abstract available. PMID: 14602734
Matti Narkia

Treatment of Type 2 Diabetes and Dyslipidemia with the Natural Plant Alkaloid Berberine... - 0 views

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    Treatment of type 2 diabetes and dyslipidemia with the natural plant alkaloid berberine. Zhang Y, Li X, Zou D, Liu W, Yang J, Zhu N, Huo L, Wang M, Hong J, Wu P, Ren G, Ning G. J Clin Endocrinol Metab. 2008 Jul;93(7):2559-65. Epub 2008 Apr 8. PMID: 18397984 doi:10.1210/jc.2007-2404 Conclusions: Berberine is effective and safe in the treatment of type 2 diabetes and dyslipidemia.
Matti Narkia

The Effect of Vitamin D2 and Vitamin D3 on Intestinal Calcium Absorption in Nigerian Ch... - 0 views

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    The effect of vitamin D2 and vitamin D3 on intestinal calcium absorption in Nigerian children with rickets. Thacher TD, Obadofin MO, O'Brien KO, Abrams SA. J Clin Endocrinol Metab. 2009 Sep;94(9):3314-21. Epub 2009 Jun 30. PMID: 19567516 Conclusions: Despite similar increases in 25-hydroxyvitamin D and 1,25-dihydroxyvitamin D with vitamin D2 or vitamin D3, fractional calcium absorption did not increase, indicating that rickets in Nigerian children is not primarily due to vitamin D-deficient calcium malabsorption
Matti Narkia

Vitamin D status and its relationship to body fat, final height, and peak bone mass in ... - 0 views

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    Vitamin D status and its relationship to body fat, final height, and peak bone mass in young women.\nKremer R, Campbell PP, Reinhardt T, Gilsanz V.\nJ Clin Endocrinol Metab. 2009 Jan;94(1):67-73. Epub 2008 Nov 4.\nPMID: 18984659
Matti Narkia

Association of vitamin D deficiency with heart failure and sudden cardiac death in a la... - 0 views

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    Association of vitamin D deficiency with heart failure and sudden cardiac death in a large cross-sectional study of patients referred for coronary angiography.\nPilz S, März W, Wellnitz B, Seelhorst U, Fahrleitner-Pammer A, Dimai HP, Boehm BO, Dobnig H.\nJ Clin Endocrinol Metab. 2008 Oct;93(10):3927-35. Epub 2008 Aug 5.\nPMID: 18682515
Matti Narkia

Vitamin D Deficiency in Older Men. - 0 views

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    Vitamin D Deficiency in Older Men.\nOrwoll E, Nielson CM, Marshall LM, Lambert L, Holton KF, Hoffman AR, Barrett-Connor E, Shikany JM, Dam T, Cauley JA; for the Osteoporotic Fractures in Men (MrOS) Study Group.\nJ Clin Endocrinol Metab. 2009 Jan 27. [Epub ahead of print]\nPMID: 19174492
Matti Narkia

Effects of Potassium Alkali and Calcium Supplementation on Bone Turnover in Postmenopau... - 0 views

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    Sakhaee K, Maalouf NM, Abrams SA, Pak CY. Effects of potassium alkali and calcium supplementation on bone turnover in postmenopausal women. J Clin Endocrinol Metab. 2005 Jun;90(6):3528-33. Epub 2005 Mar 8. PMID: 15755853
Matti Narkia

Long-Term Persistence of the Urine Calcium-Lowering Effect of Potassium Bicarbonate in ... - 0 views

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    Frassetto L, Morris RC Jr, Sebastian A. Long-term persistence of the urine calcium-lowering effect of potassium bicarbonate in postmenopausal women. J Clin Endocrinol Metab. 2005 Feb;90(2):831-4. Epub 2004 Nov 30. PMID: 15572425 [PubMed - indexed for M
Matti Narkia

Potassium Bicarbonate Reduces Urinary Nitrogen Excretion in Postmenopausal Women -- Fra... - 0 views

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    Frassetto L, Morris RC Jr, Sebastian A. Potassium bicarbonate reduces urinary nitrogen excretion in postmenopausal women. J Clin Endocrinol Metab. 1997 Jan;82(1):254-9. PMID: 8989270 [PubMed - indexed for MEDLINE]
Matti Narkia

Effects of Above Average Summer Sun Exposure on Serum 25-Hydroxyvitamin D and Calcium A... - 0 views

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    Barger-Lux MJ, Heaney RP. Effects of above average summer sun exposure on serum 25-hydroxyvitamin D and calcium absorption.J Clin Endocrinol Metab. 2002 Nov;87(11):4952-6.PMID: 12414856 [PubMed - indexed for MEDLINE]
Matti Narkia

Vitamin D Status as a Determinant of Peak Bone Mass in Young Finnish Men -- V... - 0 views

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    Valimaki VV, Alfthan H, Lehmuskallio E, Loyttyniemi E, Sahi T, Stenman UH, Suominen H, Valimaki MJ. Vitamin D status as a determinant of peak bone mass in young Finnish men. J Clin Endocrinol Metab. 2004 Jan;89(1):76-80. PMID: 14715830 [PubMed - indexe
Matti Narkia

Effect of vitamin D deficiency and replacement on endothelial function in asymptomatic ... - 0 views

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    Effect of vitamin D deficiency and replacement on endothelial function in asymptomatic subjects. Tarcin O, Yavuz DG, Ozben B, Telli A, Velioglu Ogunc A, Yuksel M, Toprak A, Yazici D, Sancak S, Deyneli O, Akalin S. J Clin Endocrinol Metab. 2009 Jul 7. [Epub ahead of print] PMID: 19584181 doi:10.1210/jc.2008-1212 Conclusions: This study shows that 25(OH)D deficiency is associated with endothelial dysfunction and increased lipid peroxidation. Replacement of vitamin D has favorable effects on endothelial function. Vitamin D deficiency can be seen as an independent risk factor of atherosclerosis. Hypovitaminosis D associated endothelial dysfunction may predispose to higher cardiovascular disease in the winter.
Matti Narkia

Vitamin D Status Predicts Physical Performance and Its Decline in Older Persons -- Wich... - 0 views

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    Vitamin D status predicts physical performance and its decline in older persons. Wicherts IS, van Schoor NM, Boeke AJ, Visser M, Deeg DJ, Smit J, Knol DL, Lips P. J Clin Endocrinol Metab. 2007 Jun;92(6):2058-65. Epub 2007 Mar 6. PMID: 17341569 doi:10.1210/jc.2006-1525 ONCLUSIONS: Serum 25-OHD concentrations below 20 ng/ml are associated with poorer physical performance and a greater decline in physical performance in older men and women. Because almost 50% of the population had serum 25-OHD below 20 ng/ml, public health strategies should be aimed at this group.
Matti Narkia

The Role of Vitamin D and Calcium in Type 2 Diabetes. A Systematic Review and Meta-Anal... - 0 views

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    The role of vitamin D and calcium in type 2 diabetes. A systematic review and meta-analysis. Pittas AG, Lau J, Hu FB, Dawson-Hughes B. J Clin Endocrinol Metab. 2007 Jun;92(6):2017-29. Epub 2007 Mar 27. Review. PMID: 17389701 .CONCLUSIONS: Vitamin D and calcium insufficiency may negatively influence glycemia, whereas combined supplementation with both nutrients may be beneficial in optimizing glucose metabolism.
Matti Narkia

Age-Related Changes in the 25-Hydroxyvitamin D Versus Parathyroid Hormone Relationship ... - 0 views

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    Age-related changes in the 25-hydroxyvitamin D versus parathyroid hormone relationship suggest a different reason why older adults require more vitamin D. Vieth R, Ladak Y, Walfish PG. J Clin Endocrinol Metab. 2003 Jan;88(1):185-91. PMID: 12519850 This study shows that all age groups exhibit a high prevalence of 25(OH)D insufficiency and secondary hyperparathyroidism. Older adults are just as efficient in maintaining 25(OH)D, but they need more vitamin D to produce the higher 25(OH)D concentrations required to overcome the hyperparathyroidism associated with their diminishing renal function
Matti Narkia

Comparison of Daily, Weekly, and Monthly Vitamin D3 in Ethanol Dosing Protocols for Two... - 0 views

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    Comparison of daily, weekly, and monthly vitamin D3 in ethanol dosing protocols for two months in elderly hip fracture patients. Ish-Shalom S, Segal E, Salganik T, Raz B, Bromberg IL, Vieth R. J Clin Endocrinol Metab. 2008 Sep;93(9):3430-5. Epub 2008 Jun 10. PMID: 18544622 doi:10.1210/jc.2008-0241 CONCLUSIONS: Supplementation with vitamin D can be achieved equally well with daily, weekly, or monthly dosing frequencies. Therefore, the choice of dose frequency can be based on whichever approach will optimize an individual's adherence with long-term vitamin D supplementation.
Matti Narkia

Short- and Long-Term Safety of Weekly High-Dose Vitamin D3 Supplementation in School Ch... - 0 views

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    Conclusion: Vitamin D3 at doses equivalent to 2000 IU/d for 1 yr is safe in adolescents and results in desirable vitamin D levels. Short- and long-term safety of weekly high-dose vitamin D3 supplementation in school children. Maalouf J, Nabulsi M, Vieth R, Kimball S, El-Rassi R, Mahfoud Z, El-Hajj Fuleihan G. J Clin Endocrinol Metab. 2008 Jul;93(7):2693-701. Epub 2008 Apr 29. PMID: 18445674 doi:10.1210/jc.2007-2530
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