Vitamin D in Preschoolers With Viral-induced Asthma

Condition:   Asthma
Interventions:   Dietary Supplement: vitamin D bolus;   Dietary Supplement: placebo
Sponsors:   St. Justine’s Hospital;   The Hospital for Sick Children;   Centre Hospitalier Universitaire de Sherbrooke;   Montreal Children’s Hospital of the MUHC;   British Columbia Children’s Hospital;   London Health Centre
Not yet recruiting – verified July 2014

View full post on ClinicalTrials.gov: asthma | received in the last 14 days

Association of vitamin D status with arterial blood pressure and hypertension risk: a mendelian randomisation study.

Related Articles

Association of vitamin D status with arterial blood pressure and hypertension risk: a mendelian randomisation study.

Lancet Diabetes Endocrinol. 2014 Jun 25;

Authors: Vimaleswaran KS, Cavadino A, Berry DJ, LifeLines Cohort Study investigators, Jorde R, Dieffenbach AK, Lu C, Alves AC, Heerspink HJ, Tikkanen E, Eriksson J, Wong A, Mangino M, Jablonski KA, Nolte IM, Houston DK, Ahluwalia TS, van der Most PJ, Pasko D, Zgaga L, Thiering E, Vitart V, Fraser RM, Huffman JE, de Boer RA, Schöttker B, Saum KU, McCarthy MI, Dupuis J, Herzig KH, Sebert S, Pouta A, Laitinen J, Kleber ME, Navis G, Lorentzon M, Jameson K, Arden N, Cooper JA, Acharya J, Hardy R, Raitakari O, Ripatti S, Billings LK, Lahti J, Osmond C, Penninx BW, Rejnmark L, Lohman KK, Paternoster L, Stolk RP, Hernandez DG, Byberg L, Hagström E, Melhus H, Ingelsson E, Mellström D, Ljunggren O, Tzoulaki I, McLachlan S, Theodoratou E, Tiesler CM, Jula A, Navarro P, Wright AF, Polasek O, International Consortium for Blood Pressure (ICBP), Cohorts for Heart and Aging Research in Genomic Epidemiology (CHARGE) consortium, Global Blood Pressure Genetics (Global BPGen) consortium, Caroline Hayward, Wilson JF, Rudan I, Salomaa V, Heinrich J, Campbell H, Price JF, Karlsson M, Lind L, Michaëlsson K, Bandinelli S, Frayling TM, Hartman CA, Sørensen TI, Kritchevsky SB, Langdahl BL, Eriksson JG, Florez JC, Spector TD, Lehtimäki T, Kuh D, Humphries SE, Cooper C, Ohlsson C, März W, de Borst MH, Kumari M, Kivimaki M, Wang TJ, Power C, Brenner H, Grimnes G, van der Harst P, Snieder H, Hingorani AD, Pilz S, Whittaker JC, Järvelin MR, Hyppönen E

Abstract
BACKGROUND: Low plasma 25-hydroxyvitamin D (25[OH]D) concentration is associated with high arterial blood pressure and hypertension risk, but whether this association is causal is unknown. We used a mendelian randomisation approach to test whether 25(OH)D concentration is causally associated with blood pressure and hypertension risk.
METHODS: In this mendelian randomisation study, we generated an allele score (25[OH]D synthesis score) based on variants of genes that affect 25(OH)D synthesis or substrate availability (CYP2R1 and DHCR7), which we used as a proxy for 25(OH)D concentration. We meta-analysed data for up to 108?173 individuals from 35 studies in the D-CarDia collaboration to investigate associations between the allele score and blood pressure measurements. We complemented these analyses with previously published summary statistics from the International Consortium on Blood Pressure (ICBP), the Cohorts for Heart and Aging Research in Genomic Epidemiology (CHARGE) consortium, and the Global Blood Pressure Genetics (Global BPGen) consortium.
FINDINGS: In phenotypic analyses (up to n=49?363), increased 25(OH)D concentration was associated with decreased systolic blood pressure (? per 10% increase, -0·12 mm Hg, 95% CI -0·20 to -0·04; p=0·003) and reduced odds of hypertension (odds ratio [OR] 0·98, 95% CI 0·97-0·99; p=0·0003), but not with decreased diastolic blood pressure (? per 10% increase, -0·02 mm Hg, -0·08 to 0·03; p=0·37). In meta-analyses in which we combined data from D-CarDia and the ICBP (n=146?581, after exclusion of overlapping studies), each 25(OH)D-increasing allele of the synthesis score was associated with a change of -0·10 mm Hg in systolic blood pressure (-0·21 to -0·0001; p=0·0498) and a change of -0·08 mm Hg in diastolic blood pressure (-0·15 to -0·02; p=0·01). When D-CarDia and consortia data for hypertension were meta-analysed together (n=142?255), the synthesis score was associated with a reduced odds of hypertension (OR per allele, 0·98, 0·96-0·99; p=0·001). In instrumental variable analysis, each 10% increase in genetically instrumented 25(OH)D concentration was associated with a change of -0·29 mm Hg in diastolic blood pressure (-0·52 to -0·07; p=0·01), a change of -0·37 mm Hg in systolic blood pressure (-0·73 to 0·003; p=0·052), and an 8·1% decreased odds of hypertension (OR 0·92, 0·87-0·97; p=0·002).
INTERPRETATION: Increased plasma concentrations of 25(OH)D might reduce the risk of hypertension. This finding warrants further investigation in an independent, similarly powered study.
FUNDING: British Heart Foundation, UK Medical Research Council, and Academy of Finland.

PMID: 24974252 [PubMed – as supplied by publisher]

View full post on pubmed: asthma

Vitamin E In Canola And Other Cooking Oils Linked To Asthma, Other Lung … – Medical Daily


Medical Daily

Vitamin E In Canola And Other Cooking Oils Linked To Asthma, Other Lung
Medical Daily
"People in countries that consume olive and sunflower oil have the lowest rate of asthma and those that consume soybean, corn and canola oil have the highest rate of asthma," Cook-Mills said. "When people consume alpha-tocopherol, which is rich in

View full post on asthma – Google News

Vitamin E-rich oils may increase incidence of asthma, says study – News-Medical.net


Science a Gogo

Vitamin E-rich oils may increase incidence of asthma, says study
News-Medical.net
A large new Northwestern Medicine- study upends our understanding of vitamin E and ties the increasing consumption of supposedly healthy vitamin E-rich oils — canola, soybean and corn – to the rising incidence of lung inflammation and, possibly, asthma.
Vitamin E in canola linked to asthma, lung inflammationScience a Gogo
Vitamin E in canola and other oils hurts lungsScience Codex

all 19 news articles »

View full post on asthma – Google News