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Matti Narkia

Maternal vitamin D status during pregnancy and childhood bone mass at age 9 years: a lo... - 0 views

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    Maternal vitamin D status during pregnancy and childhood bone mass at age 9 years: a longitudinal study.
    Javaid MK, Crozier SR, Harvey NC, Gale CR, Dennison EM, Boucher BJ, Arden NK, Godfrey KM, Cooper C; Princess Anne Hospital Study Group.
    Lancet. 2006 Jan 7;367(9504):36-43. Erratum in: Lancet. 2006 May 6;367(9521):1486.
    PMID: 16399151
    doi:10.1016/S0140-6736(06)67922-1

    Interpretation
    Maternal vitamin D insufficiency is common during pregnancy and is associated with reduced bone-mineral accrual in the offspring during childhood; this association is mediated partly through the concentration of umbilical venous calcium. Vitamin D supplementation of pregnant women, especially during winter months, could lead to longlasting reductions in the risk of osteoporotic fracture in their offspring.
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 K2] [Clin Calcium. 2008] - PubMed result - 0 views

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    [Vitamin K2]
    Ishida Y.
    Clin Calcium. 2008 Oct;18(10):1476-82. Review. Japanese.
    PMID: 18830045

    "Vitamin K2 has been approved for the treatment of osteoporosis in Japan since 1995. Vitamin K2 treatment in osteoporosis has been shown to inhibit the occurrence of new bone fractures and to maintain BMD. The uniqueness of the prevention of bone fractures by vitamin K2 is that there has been no direct evidence of the relationship between increase of BMD and a decrease in the occurrence of bone fractures. A recent systematic review of seven Japanese randomized controlled trials by Cockayne has also shown that supplementation with phytonadione (Vitamin K1) and menaquinone (Vitamin K2) , particularly menaquinone-4, is associated with increased BMD and reduced fracture incidence. To confirm these results, a larger well design RCT using fractures as the primary endpoint is clearly needed."
Matti Narkia

Benefit-risk assessment of vitamin D supplementation. - Osteoporos Int. 2009 Dec 3. - S... - 0 views

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    Benefit-risk assessment of vitamin D supplementation.
    Bischoff-Ferrari HA, Shao A, Dawson-Hughes B, Hathcock J, Giovannucci E, Willett WC.
    Osteoporos Int. 2009 Dec 3. [Epub ahead of print]
    PMID: 19957164

    Conclusion Our analysis suggests that mean serum 25(OH)D levels of about 75 to 110 nmol/l provide optimal benefits for all investigated endpoints without increasing health risks. These levels can be best obtained with oral doses in the range of 1,800 to 4,000 IU vitamin D per day; further work is needed, including subject and environment factors, to better define the doses that will achieve optimal blood levels in the large majority of the population.
Matti Narkia

African Americans, 25-hydroxyvitamin D, and osteoporosis: a paradox -- Aloia 88 (2): 54... - 0 views

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    African Americans, 25-hydroxyvitamin D, and osteoporosis: a paradox.
    Aloia JF.
    Am J Clin Nutr. 2008 Aug;88(2):545S-550S. Review.
    PMID: 18689399
Matti Narkia

Serum 25-hydroxyvitamin D levels in vitamin D-insufficient hip fracture patients after ... - 0 views

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    Serum 25-hydroxyvitamin D levels in vitamin D-insufficient hip fracture patients after supplementation with ergocalciferol and cholecalciferol.
    Glendenning P, Chew GT, Seymour HM, Gillett MJ, Goldswain PR, Inderjeeth CA, Vasikaran SD, Taranto M, Musk AA, Fraser WD.
    Bone. 2009 Nov;45(5):870-5. Epub 2009 Jul 23.
    PMID: 19631774
    doi:10.1016/j.bone.2009.07.015

    Cholecalciferol supplementation resulted in a 31% greater increase in total HPLC-measured 25OHD (p=0.010) and 52% greater rise in RIA-measured 25OHD (p<0.001) of supplementation dose with than ergocalciferol equivalent an>0.05). In vitamin D-insufficient hip fracture patients, supplementation with cholecalciferol 1000 IU/day for three months was more effective in increasing serum 25OHD than an equivalent dose of ergocalciferol. However, the lack of difference in PTH lowering between calciferol treatments raises questions about the biological importance of this observation.
Matti Narkia

Severe vitamin D deficiency in Swiss hip fracture patients. - [Bone. 2008] - PubMed Result - 0 views

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    Severe vitamin D deficiency in Swiss hip fracture patients.
    Bischoff-Ferrari HA, Can U, Staehelin HB, Platz A, Henschkowski J, Michel BA, Dawson-Hughes B, Theiler R.
    Bone. 2008 Mar;42(3):597-602. Epub 2007 Nov 28.
    PMID: 18180211

    BACKGROUND: Most clinical guidelines for the prevention of hip fractures recommend 800 IU vitamin D per day. This dose shifted serum 25-hydroxyvitamin D levels (25(OH)D) in previous studies to between 60 and 100 nmol/l. AIM: To measure 25(OH)D levels and prevalence of vitamin D supplementation in individuals age 65+ with acute hip fracture. METHODS: 222 consecutive hip fracture patients were investigated over a 12 month period. Mean age of patients was 86 years and 77% were women. RESULTS: Mean serum 25(OH)D levels were low among hip fracture patients admitted from home (34.6 nmol/l), from assisted living (27.7 nmol/l), and from nursing homes (24 nmol/l). Severe vitamin D deficiency below 30 nmol/l was present in 60%, 80% were below 50 nmol/l, and less than 4% reached desirable levels of at least 75 nmol/l. Consistently, only 10% of hip fracture patients had any vitamin D supplementation on admission to acute care with significantly higher 25(OH)D levels among individuals supplemented with 800-880 IU/day (63.5 nmol/l). Controlling for age and gender, vitamin D supplementation, type of dwelling, and season were independently and significantly associated with 25(OH)D levels. CONCLUSION: These data provide evidence that current guidelines for the prevention of hip fractures need further effort to be translated into clinical practice.
Matti Narkia

Effect of four monthly oral vitamin D3 (cholecalciferol) supplementation on fractures a... - 0 views

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    Effect of four monthly oral vitamin D3 (cholecalciferol) supplementation on fractures and mortality in men and women living in the community: randomised double blind controlled trial.
    Trivedi DP, Doll R, Khaw KT.
    BMJ. 2003 Mar 1;326(7387):469.
    PMID: 12609940

    Conclusion: Four monthly supplementation with 100 000 IU oral vitamin D may prevent fractures without adverse effects in men and women living in the general community.
Matti Narkia

Effectiveness and Safety of Vitamin D in Relation to Bone Health (full text) - 0 views

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    Effectiveness and safety of vitamin D in relation to bone health.
    Cranney A, Horsley T, O'Donnell S, Weiler H, Puil L, Ooi D, Atkinson S, Ward L, Moher D, Hanley D, Fang M, Yazdi F, Garritty C, Sampson M, Barrowman N, Tsertsvadze A, Mamaladze V.
    Evid Rep Technol Assess (Full Rep). 2007 Aug;(158):1-235. Review.
    PMID: 18088161

    CONCLUSIONS: The results highlight the need for additional high quality studies in infants, children, premenopausal women, and diverse racial or ethnic groups. There was fair evidence from studies of an association between circulating 25(OH)D concentrations with some bone health outcomes (established rickets, PTH, falls, BMD). However, the evidence for an association was inconsistent for other outcomes (e.g., BMC in infants and fractures in adults). It was difficult to define specific thresholds of circulating 25(OH)D for optimal bone health due to the imprecision of different 25(OH)D assays. Standard reference preparations are needed so that serum 25(OH)D can be accurately and reliably measured, and validated. In most trials, the effects of vitamin D and calcium could not be separated. Vitamin D(3) (>700 IU/day) with calcium supplementation compared to placebo has a small beneficial effect on BMD, and reduces the risk of fractures and falls although benefit may be confined to specific subgroups. Vitamin D intake above current dietary reference intakes was not reported to be associated with an increased risk of adverse events. However, most trials of higher doses of vitamin D were not adequately designed to assess long-term harms.
Matti Narkia

Summary of evidence-based review on vitamin D efficacy and safety in relation to bone h... - 0 views

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    Summary of evidence-based review on vitamin D efficacy and safety in relation to bone health.
    Cranney A, Weiler HA, O'Donnell S, Puil L.
    Am J Clin Nutr. 2008 Aug;88(2):513S-519S. Review.
    PMID: 18689393

    We found inconsistent evidence of an association between serum 25-hydroxyvitamin D [25(OH)D] concentration and bone mineral content in infants and fair evidence of an association with bone mineral content or density in older children and older adults. The evidence of an association between serum 25(OH)D concentration and some clinical outcomes (fractures, performance measures) in postmenopausal women and older men was inconsistent, and the evidence of an association with falls was fair. We found good evidence of a positive effect of consuming vitamin D-fortified foods on 25(OH)D concentrations. The evidence for a benefit of vitamin D on falls and fractures varied. We found fair evidence that adults tolerated vitamin D at doses above current dietary reference intake levels, but we had no data on the association between long-term harms and higher doses of vitamin D.
Matti Narkia

Effectiveness and safety of vitamin D in relation to bone health. - [Evid Rep Technol A... - 0 views

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    Effectiveness and safety of vitamin D in relation to bone health.
    Cranney A, Horsley T, O'Donnell S, Weiler H, Puil L, Ooi D, Atkinson S, Ward L, Moher D, Hanley D, Fang M, Yazdi F, Garritty C, Sampson M, Barrowman N, Tsertsvadze A, Mamaladze V.
    Evid Rep Technol Assess (Full Rep). 2007 Aug;(158):1-235. Review.
    PMID: 18088161

    CONCLUSIONS: The results highlight the need for additional high quality studies in infants, children, premenopausal women, and diverse racial or ethnic groups. There was fair evidence from studies of an association between circulating 25(OH)D concentrations with some bone health outcomes (established rickets, PTH, falls, BMD). However, the evidence for an association was inconsistent for other outcomes (e.g., BMC in infants and fractures in adults). It was difficult to define specific thresholds of circulating 25(OH)D for optimal bone health due to the imprecision of different 25(OH)D assays. Standard reference preparations are needed so that serum 25(OH)D can be accurately and reliably measured, and validated. In most trials, the effects of vitamin D and calcium could not be separated. Vitamin D(3) (>700 IU/day) with calcium supplementation compared to placebo has a small beneficial effect on BMD, and reduces the risk of fractures and falls although benefit may be confined to specific subgroups. Vitamin D intake above current dietary reference intakes was not reported to be associated with an increased risk of adverse events. However, most trials of higher doses of vitamin D were not adequately designed to assess long-term harms.
Matti Narkia

Vitamin D and vitamin D analogues for preventing fractures associated with involutional... - 0 views

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    Vitamin D and vitamin D analogues for preventing fractures associated with involutional and post-menopausal osteoporosis.
    Avenell A, Gillespie WJ, Gillespie LD, O'Connell D.
    Cochrane Database Syst Rev. 2009 Apr 15;(2):CD000227. Review.
    PMID: 19370554
    DOI: 10.1002/14651858.CD000227.pub3

    AUTHORS' CONCLUSIONS: Frail older people confined to institutions may sustain fewer hip fractures if given vitamin D with calcium. Vitamin D alone is unlikely to prevent fracture. Overall there is a small but significant increase in gastrointestinal symptoms and renal disease associated with vitamin D or its analogues. Calcitriol is associated with an increased incidence of hypercalcaemia.
Matti Narkia

Vitamin K and the Prevention of Fractures: Systematic Review and Meta-analysis of Rando... - 0 views

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    Vitamin K and the prevention of fractures: systematic review and meta-analysis of randomized controlled trials.
    Cockayne S, Adamson J, Lanham-New S, Shearer MJ, Gilbody S, Torgerson DJ.
    Arch Intern Med. 2006 Jun 26;166(12):1256-61. Review.
    PMID: 16801507

    Conclusions This systematic review suggests that supplementation with phytonadione and menaquinone-4 reduces bone loss. In the case of the latter, there is a strong effect on incident fractures among Japanese patients.
Matti Narkia

Stress fractures in the Israeli defense forces fro...[Clin Orthop Relat Res. 2000] - Pu... - 0 views

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    Stress fractures in the Israeli defense forces from 1995 to 1996.
    Givon U, Friedman E, Reiner A, Vered I, Finestone A, Shemer J.
    Clin Orthop Relat Res. 2000 Apr;(373):227-32.
    PMID: 10810481

    Serum levels of bone specific alkaline phosphatase and osteocalcin were elevated in patients with high grade stress fractures compared with control subjects with no symptoms: 37.6 versus 26.2 units/L, and 10.8 versus 8.8 ng/mL, respectively. Levels of 25-hydroxy vitamin D were lower in patients with high grade stress fractures (25.3 ng/mL) than in control subjects (29.8 ng/mL). This study revealed that several parameters can distinguish soldiers with high grade stress fractures, but their predictive value and precise pathogenetic role remain unclear.
Matti Narkia

Calcium and vitamin d supplementation decreases incidence of stress fractures in female... - 0 views

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    Calcium and vitamin d supplementation decreases incidence of stress fractures in female navy recruits.
    Lappe J, Cullen D, Haynatzki G, Recker R, Ahlf R, Thompson K.
    J Bone Miner Res. 2008 May;23(5):741-9.
    PMID: 18433305
    doi: 10.1359/jbmr.080102

    Conclusions: Generalizing the findings to the population of 14,416 women who entered basic training at the Great Lakes during the 24 mo of recruitment, calcium and vitamin D supplementation for the entire cohort would have prevented 187 persons from fracturing. Such a decrease in SFx would be associated with a significant decrease in morbidity and financial costs.
Matti Narkia

Association between serum 25(OH)D concentrations and bone stress fractures in Finnish y... - 0 views

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    Association between serum 25(OH)D concentrations and bone stress fractures in Finnish young men.
    Ruohola JP, Laaksi I, Ylikomi T, Haataja R, Mattila VM, Sahi T, Tuohimaa P, Pihlajamäki H.
    J Bone Miner Res. 2006 Sep;21(9):1483-8.
    doi: 10.1359/jbmr.060607

    Conclusions: A lower level of serum 25(OH)D concentration may be a generally predisposing element for bone stress fractures. Considering the obvious need of additional vitamin D in prevention of stress fractures, the effects of vitamin D fortification of foods and supplementation will be subjects of interest for future research
    PMID: 16939407
Matti Narkia

NEJM -- Vitamin D3 and calcium to prevent hip fractures in the elderly women - 0 views

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    Vitamin D3 and calcium to prevent hip fractures in the elderly women.
    Chapuy MC, Arlot ME, Duboeuf F, Brun J, Crouzet B, Arnaud S, Delmas PD, Meunier PJ.
    N Engl J Med. 1992 Dec 3;327(23):1637-42.
    PMID: 1331788

    CONCLUSIONS. Supplementation with vitamin D3 and calcium reduces the risk of hip fractures and other nonvertebral fractures among elderly women.
Matti Narkia

Half of the patients with an acute hip fracture suffer from hypovitaminosis D: a prospe... - 0 views

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    Half of the patients with an acute hip fracture suffer from hypovitaminosis D: a prospective study in southeastern Finland.
    Nurmi I, Kaukonen JP, Lüthje P, Naboulsi H, Tanninen S, Kataja M, Kallio ML, Leppilampi M.
    Osteoporos Int. 2005 Dec;16(12):2018-24. Epub 2005 Aug 24.
    PMID: 16133642

    Half of the patients with a hip fracture suffered from hypovitaminosis D. The situation was worst in institutional and residential care, although there are personnel for taking care of vitamin D supplementation. In the late summer, one-third and in late winter two-thirds of the patients suffered from hypovitaminosis D. The geographical location of Finland indicates extensive efforts to increase the use of vitamin D supplements among elderly.
Matti Narkia

Reducing fracture risk with calcium and vitamin D. - Wiley InterScience :: JO... - 0 views

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    Reducing fracture risk with calcium and vitamin D.
    Lips P, Bouillon R, van Schoor NM, Vanderschueren D, Verschueren S, Kuchuk N, Milisen K, Boonen S.
    Clin Endocrinol (Oxf). 2009 Sep 10. [Epub ahead of print]
    PMID: 19744099
    DOI: 10.1111/j.0300-0664.2009.03701.x
Matti Narkia

Vitamin K Supplementation in Postmenopausal Women with Osteopenia (ECKO Trial): A Rando... - 0 views

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    Vitamin K supplementation in postmenopausal women with osteopenia (ECKO trial): a randomized controlled trial.
    Cheung AM, Tile L, Lee Y, Tomlinson G, Hawker G, Scher J, Hu H, Vieth R, Thompson L, Jamal S, Josse R.
    PLoS Med. 2008 Oct 14;5(10):e196. Erratum in: PLoS Med. 2008 Dec;5(12):e247.
    PMID: 18922041

    CONCLUSIONS: Daily 5 mg of vitamin K1 supplementation for 2 to 4 y does not protect against age-related decline in BMD, but may protect against fractures and cancers in postmenopausal women with osteopenia. More studies are needed to further examine the effect of vitamin K on fractures and cancers. Trial registration: ClinicalTrials.gov (#NCT00150969) and Current Controlled Trials (#ISRCTN61708241)
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