The impact of cholecalciferol supplementation on the systemic inflammatory profile: A systematic review and meta-analysis of high-quality randomized controlled trials
dc.contributor.author | Calton, Emily | |
dc.contributor.author | Keane, Kevin | |
dc.contributor.author | Newsholme, Philip | |
dc.contributor.author | Zhao, Y. | |
dc.contributor.author | Soares, Mario | |
dc.date.accessioned | 2017-08-24T02:21:35Z | |
dc.date.available | 2017-08-24T02:21:35Z | |
dc.date.created | 2017-08-23T07:21:31Z | |
dc.date.issued | 2017 | |
dc.identifier.citation | Calton, E. and Keane, K. and Newsholme, P. and Zhao, Y. and Soares, M. 2017. The impact of cholecalciferol supplementation on the systemic inflammatory profile: A systematic review and meta-analysis of high-quality randomized controlled trials. European Journal of Clinical Nutrition. 71 (8): pp. 931-943. | |
dc.identifier.uri | http://hdl.handle.net/20.500.11937/55925 | |
dc.identifier.doi | 10.1038/ejcn.2017.67 | |
dc.description.abstract |
© 2017 Macmillan Publishers Limited, part of Springer Nature. Causal links between vitamin D status [25(OH)D] and systemic inflammation were examined through a systematic review of randomized controlled trials (RCTs). Selected RCTs were =12 weeks, conducted in adults free of acute inflammatory disease, and of high-quality (Jadad score =3). Of 14 studies that met our criteria, 9 studies (15 study arms) permitted extraction of data. There was no effect on the weighted mean difference (WMD) of IL-6 (WMD (95% confidence interval)=0.1, (-0.166, 0.366) pg/ml, P=0.462) or C-reactive protein (CRP) (WMD=-0.324, (-1.007, 0.359) mg/l, P=0.352). Subgroup analyses of trials achieving =80 nmol/l indicated a trend for lower CRP (WMD=-0.834, (-1.726, 0.058) mg/l, P=0.067), however heterogeneity was significant (I 2 =66.7%, P=0.017). Studies employing a low dose ( < 1000 IU/d) showed increased CRP (WMD=0.615, (0.132, 1.098), P=0.013). In contrast, =1000 IU/d had a favourable effect on CRP (WMD=-0.939, (-1.805, -0.073), P=0.034) but heterogeneity was significant (I 2 =61.3%, P=0.017). Meta-regression indicated that older age predicted a significant decrease in IL-6 (ß=-0.02, (-0.034, -0.006) pg/ml, P=0.013) and CRP (ß=-0.06, (-0.103, -0.017), P=0.01), whereas a greater percentage of females (ß=0.027, (0.011, 0.044), P=0.004) and longer study duration independently predicted a higher WMD for CRP (ß=0.049, (0.018, 0.079), P=0.005). Available high-quality RCTs did not support a beneficial effect of cholecalciferol on systemic IL-6 and CRP. Future studies should consider the confounding effects of age, gender and study duration, while possibly targeting an achieved 25(OH)D =80 nmol/l. | |
dc.publisher | Nature Publishing Group | |
dc.title | The impact of cholecalciferol supplementation on the systemic inflammatory profile: A systematic review and meta-analysis of high-quality randomized controlled trials | |
dc.type | Journal Article | |
dcterms.source.volume | 71 | |
dcterms.source.number | 8 | |
dcterms.source.startPage | 931 | |
dcterms.source.endPage | 943 | |
dcterms.source.issn | 0954-3007 | |
dcterms.source.title | European Journal of Clinical Nutrition | |
curtin.department | School of Public Health | |
curtin.accessStatus | Fulltext not available |
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