TY - JOUR
T1 - Effect of vitamin D supplementation on markers of vascular function
T2 - A systematic review and individual participant meta- analysis
AU - Beveridge, Louise A.
AU - Khan, Faisel
AU - Struthers, Allan D.
AU - Armitage, Jane
AU - Barchetta, Ilaria
AU - Bressendorff, Iain
AU - Cavallo, Maria Gisella
AU - Clarke, Robert
AU - Dalan, Rinkoo
AU - Dreyer, Gavin
AU - Gepner, Adam D.
AU - Forouhi, Nita G.
AU - Harris, Ryan A.
AU - Hitman, Graham A.
AU - Larsen, Thomas
AU - Khadgawat, Rajesh
AU - Marckmann, Peter
AU - Mose, Frank H.
AU - Pilz, Stefan
AU - Scholze, Alexandra
AU - Shargorodsky, Marina
AU - Sokol, Seth I.
AU - Stricker, Hans
AU - Zoccali, Carmine
AU - Witham, Miles D.
N1 - Publisher Copyright:
© 2018 The Authors.
PY - 2018/6/1
Y1 - 2018/6/1
N2 - Background--Low 25-hydroxyvitamin D levels are associated with an increased risk of cardiovascular events, but the effect of vitamin D supplementation on markers of vascular function associated with major adverse cardiovascular events is unclear. Methods and Results--We conducted a systematic review and individual participant meta-analysis to examine the effect of vitamin D supplementation on flow-mediated dilatation of the brachial artery, pulse wave velocity, augmentation index, central blood pressure, microvascular function, and reactive hyperemia index. MEDLINE, CINAHL, EMBASE, Cochrane Central Register of Controlled Trials, and http://www.ClinicalTrials.gov were searched until the end of 2016 without language restrictions. Placebo-controlled randomized trials of at least4 weeks duration were included. Individual participant data were sought from investigators on included trials. Trial-level metaanalysis was performed using random-effects models; individual participant meta-analyses used a 2-stage analytic strategy, examining effects in prespecified subgroups. 31trials (2751 participants) were included; 29 trials (2641participants) contributed data to trial-level meta-analysis, and24trials (2051 participants) contributed to individual-participant analyses. VitaminD3daily dose equivalents ranged from 900 to 5000 IU; duration was 4 weeks to12 months. Trial-level meta-analysis showed no significant effect of supplementation on macrovascularmeasures(flow-mediateddilatation,0.37%[95%confidenceinterval,-0.23to0.97]; carotid-femoralpulsewavevelocity, 0.00 m/s [95% confidence interval, -0.36 to 0.37]); similar results were obtained from individual participant data. Microvascular function showed a modest improvement in trial-level data only. No consistent benefit was observed in subgroup analyses or between different vitamin D analogues. Conclusions--Vitamin D supplementation had no significant effect on most markers of vascular function in this analysis.
AB - Background--Low 25-hydroxyvitamin D levels are associated with an increased risk of cardiovascular events, but the effect of vitamin D supplementation on markers of vascular function associated with major adverse cardiovascular events is unclear. Methods and Results--We conducted a systematic review and individual participant meta-analysis to examine the effect of vitamin D supplementation on flow-mediated dilatation of the brachial artery, pulse wave velocity, augmentation index, central blood pressure, microvascular function, and reactive hyperemia index. MEDLINE, CINAHL, EMBASE, Cochrane Central Register of Controlled Trials, and http://www.ClinicalTrials.gov were searched until the end of 2016 without language restrictions. Placebo-controlled randomized trials of at least4 weeks duration were included. Individual participant data were sought from investigators on included trials. Trial-level metaanalysis was performed using random-effects models; individual participant meta-analyses used a 2-stage analytic strategy, examining effects in prespecified subgroups. 31trials (2751 participants) were included; 29 trials (2641participants) contributed data to trial-level meta-analysis, and24trials (2051 participants) contributed to individual-participant analyses. VitaminD3daily dose equivalents ranged from 900 to 5000 IU; duration was 4 weeks to12 months. Trial-level meta-analysis showed no significant effect of supplementation on macrovascularmeasures(flow-mediateddilatation,0.37%[95%confidenceinterval,-0.23to0.97]; carotid-femoralpulsewavevelocity, 0.00 m/s [95% confidence interval, -0.36 to 0.37]); similar results were obtained from individual participant data. Microvascular function showed a modest improvement in trial-level data only. No consistent benefit was observed in subgroup analyses or between different vitamin D analogues. Conclusions--Vitamin D supplementation had no significant effect on most markers of vascular function in this analysis.
KW - Endothelial function
KW - Paricalcitol
KW - Systematic review
KW - Vascular function
KW - Vitamin D
UR - http://www.scopus.com/inward/record.url?scp=85047978969&partnerID=8YFLogxK
U2 - 10.1161/JAHA.117.008273
DO - 10.1161/JAHA.117.008273
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
C2 - 29848497
AN - SCOPUS:85047978969
SN - 2047-9980
VL - 7
JO - Journal of the American Heart Association
JF - Journal of the American Heart Association
IS - 11
M1 - e008273
ER -
