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Free vitamin D correlate better with bone mineral density and thoracolumbar junction osteoporotic vertebral fractures than serum vitamin D.


ABSTRACT: BACKGROUND:Vitamin D deficiency has long been studied as a risk factor for osteoporosis. However, the association between serum vitamin D status, bone mineral density (BMD) and the incidence of vertebral fractures (OVFs) remain controversial. It is believed that free portion of the circulating vitamin D carries the metabolic activities of vitamin D. Therefore, the aim of the present study is to analyse if free vitamin D correlates with BMD and osteoporotic fragile vertebral fractures in the elderly population. METHODS:A total of 90 consecutive patients, including 81 female and 9 male patients, aged >?48?years, were included in this cross sectional study between March and July of 2018. Total vitamin D (total 25(OH)D), free vitamin D (free 25(OH)D), calcium and phosphorus were measured. BMD was measured using dual energy X-ray absorptiometry (DEXA) and osteoporotic vertebral fracture was assessed using plain radiograph. Multiple linear regression was performed to find out the association between total vitamin D, free vitamin D and BMD at various sites. To evaluate the association with osteoporotic vertebral multivariate logistic regression model was used. RESULTS:The mean total vitamin D and free vitamin D were 25.1?±?10.2 and 6.1?±?1.7 respectively. Free vitamin D had a linear correlation with total vitamin D (R2?=?0.69). While free vitamin D had a positive correlation with lumbar BMD roles (p?

SUBMITTER: Chhantyal K 

PROVIDER: S-EPMC7069188 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature

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Free vitamin D correlate better with bone mineral density and thoracolumbar junction osteoporotic vertebral fractures than serum vitamin D.

Chhantyal Kishor K   He Lei L   Mo Jian J   Yin Mingyu M   He Tianwei T   Chen Yuyong Y   Yang Yang Y   Zhang Liangming L   Rong Limin L  

BMC musculoskeletal disorders 20200312 1


<h4>Background</h4>Vitamin D deficiency has long been studied as a risk factor for osteoporosis. However, the association between serum vitamin D status, bone mineral density (BMD) and the incidence of vertebral fractures (OVFs) remain controversial. It is believed that free portion of the circulating vitamin D carries the metabolic activities of vitamin D. Therefore, the aim of the present study is to analyse if free vitamin D correlates with BMD and osteoporotic fragile vertebral fractures in  ...[more]

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