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Matti Narkia

Vitamin D receptor (VDR) gene polymorphisms and haplotypes, interactions with plasma 25... - 0 views

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    Vitamin D receptor (VDR) gene polymorphisms and haplotypes, interactions with plasma 25-hydroxyvitamin D and 1,25-dihydroxyvitamin D, and prostate cancer risk.
    Mikhak B, Hunter DJ, Spiegelman D, Platz EA, Hollis BW, Giovannucci E.
    Prostate. 2007 Jun 15;67(9):911-23.
    PMID: 17440943
    DOI: 10.1002/pros.20570

    RESULTS
    No association was found between these SNPs or their associated haplotypes and all PC subtypes except that haplotype 2 (A-f-b) with Cdx2 A, Fok1 f, and Bsm1 b alleles and haplotype 3 (A-F-B) with Cdx2 A, Fok1 F and Bsm1 B alleles compared to the most common haplotype (A-F-b), were associated with reduced risk of aggressive PC (high stage or Gleason sum 7; P = 0.02), both with two alleles suspected of being low risk. Carriers of the variant Cdx2 A allele who were deficient in plasma 25-hydroxyvitamin D (15 ng/ml) compared to non-carriers with normal 25-hydroxyvitamin D, had a lower risk of total and poorly differentiated PCs (Gleason sum 7) (P for interaction = 0.02 and 0.04, respectively). Plasma 1,25-dihydroxyvitamin D deficiency (26 pg/ml) was associated with a threefold risk of poorly differentiated PC (P for interaction = 0.01) when comparing carriers of the Cdx2 A allele to non-carriers with normal 1,25-dihydroxyvitamin D.

    CONCLUSION
    In this population of men, none of the VDR polymorphisms studied was associated with susceptibility to PC.

    Carriers of the variant Cdx2 A allele with low plasma 25-hydroxyvitamin D may experience a reduction in risk of total and poorly differentiated prostate cancers compared to non-carriers with adequate 25-hydroxyvitamin D.
Matti Narkia

1,25(OH)2 Vitamin D Inhibits Foam Cell Formation and Suppresses Macrophage Cholesterol ... - 0 views

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    1,25(OH)2 vitamin d inhibits foam cell formation and suppresses macrophage cholesterol uptake in patients with type 2 diabetes mellitus.
    Oh J, Weng S, Felton SK, Bhandare S, Riek A, Butler B, Proctor BM, Petty M, Chen Z, Schechtman KB, Bernal-Mizrachi L, Bernal-Mizrachi C.
    Circulation. 2009 Aug 25;120(8):687-98. Epub 2009 Aug 10.
    PMID: 19667238
    doi: 10.1161/CIRCULATIONAHA.109.856070

    Conclusion- These results identify reduced vitamin D receptor signaling as a potential mechanism underlying increased foam cell formation and accelerated cardiovascular disease in diabetic subjects.
Matti Narkia

Serum Levels of Vitamin D Metabolites and Breast Cancer Risk in the Prostate, Lung, Col... - 0 views

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    Serum levels of vitamin D metabolites and breast cancer risk in the prostate, lung, colorectal, and ovarian cancer screening trial.

    Freedman DM, Chang SC, Falk RT, Purdue MP, Huang WY, McCarty CA, Hollis BW, Graubard BI, Berg CD, Ziegler RG.
    Cancer Epidemiol Biomarkers Prev. 2008 Apr;17(4):889-94. Epub 2008 Apr 1.
    PMID: 18381472
    doi: 10.1158/1055-9965.EPI-07-2594

    In this prospective study of postmenopausal women, we did not observe an inverse association between circulating 25(OH)D or 1,25(OH)2D and breast cancer risk, although we cannot exclude an association in younger women or with long-term or earlier exposure
Matti Narkia

Plasma 25-Hydroxyvitamin D and 1,25-Dihydroxyvitamin D and Risk of Incident Ovarian Can... - 0 views

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    Plasma 25-hydroxyvitamin D and 1,25-dihydroxyvitamin D and risk of incident ovarian cancer.
    Tworoger SS, Lee IM, Buring JE, Rosner B, Hollis BW, Hankinson SE.
    Cancer Epidemiol Biomarkers Prev. 2007 Apr;16(4):783-8.
    PMID: 17416771
    doi: 10.1158/1055-9965.EPI-06-0981

    Overall, our results do not suggest that plasma vitamin D levels are associated with risk of ovarian cancer. However, we observed significant associations in some subgroups, which should be evaluated further in other studies because increasing vitamin D intake is an easy preventive measure to adopt.
Matti Narkia

Measurement of vitamin D levels in inflammatory bowel disease patients reveals a subset... - 0 views

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    Measurement of vitamin D levels in inflammatory bowel disease patients reveals a subset of Crohn's disease patients with elevated 1,25-dihydroxyvitamin D and low bone mineral density.
    Abreu MT, Kantorovich V, Vasiliauskas EA, Gruntmanis U, Matuk R, Daigle K, Chen S, Zehnder D, Lin YC, Yang H, Hewison M, Adams JS.
    Gut. 2004 Aug;53(8):1129-36.
    PMID: 15247180
    doi: 10.1136/gut.2003.036657.

    Conclusions: These data demonstrate that elevated 1,25(OH)2D is more common in CD than previously appreciated and is independently associated with low bone mineral density. The source of the active vitamin D may be the inflamed intestine. Treatment of the underlying inflammation may improve metabolic bone disease in this subgroup of patients.
Matti Narkia

Vitamin D metabolites as clinical markers in autoimmune and chronic disease. - Ann N Y ... - 0 views

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    Vitamin D metabolites as clinical markers in autoimmune and chronic disease.
    Blaney GP, Albert PJ, Proal AD.
    Ann N Y Acad Sci. 2009 Sep;1173:384-90.
    PMID: 19758177
    DOI: 10.1111/j.1749-6632.2009.04875.x
Matti Narkia

Association study on two vitamin D receptor gene polymorphisms and vitamin D metabolite... - 0 views

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    Association study on two vitamin D receptor gene polymorphisms and vitamin D metabolites in multiple sclerosis.
    Smolders J, Damoiseaux J, Menheere P, Tervaert JW, Hupperts R.
    Ann N Y Acad Sci. 2009 Sep;1173:515-20.
    PMID: 19758194
    DOI: 10.1111/j.1749-6632.2009.04656.x

    Discussion: We found no association of the Apal and Taql VDR gene SNPs with MS or with vitamin D metabolism in our population. Further research should assess the complex interaction between vitamin D, the VDR, and susceptibility to MS.
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.
    Pilz S, März W, Wellnitz B, Seelhorst U, Fahrleitner-Pammer A, Dimai HP, Boehm BO, Dobnig H.
    J Clin Endocrinol Metab. 2008 Oct;93(10):3927-35. Epub 2008 Aug 5.
    PMID: 18682515
    doi:10.1210/jc.2008-0784

    Conclusions: Low levels of 25(OH)D and 1,25(OH)2D are associated with prevalent myocardial dysfunction, deaths due to heart failure and SCD. Interventional trials are warranted to elucidate whether vitamin D supplementation is useful for treatment and/or prevention of myocardial diseases.
Matti Narkia

Low vitamin d levels predict stroke in patients referred to coronary angiography. - Str... - 0 views

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    Low vitamin d levels predict stroke in patients referred to coronary angiography.\nPilz S, Dobnig H, Fischer JE, Wellnitz B, Seelhorst U, Boehm BO, März W.\nStroke. 2008 Sep;39(9):2611-3. Epub 2008 Jul 17.\nPMID: 18635847 \ndoi: 10.1161/STROKEAHA.107.513655
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