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Published on: April 23, 2021
25-hydroxyvitamin D status is associated with chronic cerebral small vessel disease
Pil-Wook Chung1, Kwang-Yeol Park2, Jeong-Min Kim1
1From the Department of Neurology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea (P.-W.C., Y.B.K., H.-S.M.); Department of Neurology (K.-Y.P., J.-M.K., D.-W.S., M.-S.P., S.-W.A., H.-W.S.) and Division of Endocrinology, Department of Internal Medicine (Y.J.C.), Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea; and Department of Neurology, Haeundae Paik Hospital, Inje University College of Medicine, Busan, Korea (S.-Y.H.).
Insights
Low levels of 25-hydroxyvitamin D (25(OH)D) are linked to markers of cerebral small vessel disease, including lacunes, white matter hyperintensity, and microbleeds. These findings suggest vitamin D may play a role in preventing small vessel disease.
Area of Science:
- Neurology
- Endocrinology
- Radiology
Background:
- Cerebral small vessel disease (SVD) is a major cause of stroke and cognitive impairment.
- Neuroimaging techniques reveal key SVD markers such as lacunes, white matter hyperintensity, and cerebral microbleeds (CMB).
- The role of vitamin D in cerebrovascular health is an emerging area of research.
Purpose of the Study:
- To investigate the association between 25-hydroxyvitamin D (25(OH)D) levels and neuroimaging indicators of SVD.
- To determine if 25(OH)D deficiency is linked to specific SVD markers like lacunes, white matter hyperintensity, and CMB.
Main Methods:
- A cohort of 759 patients with acute ischemic stroke or transient ischemic attack was analyzed.
- Magnetic resonance imaging (MRI) was used to assess lacunes, white matter hyperintensity, and CMB.
- Linear and logistic regression models were employed to test the association between 25(OH)D levels and SVD markers.
Main Results:
- Lower 25(OH)D levels were significantly associated with an increased presence of lacunes, severe white matter hyperintensity, and deep CMB.
- Vitamin D deficiency (≤25 nmol/L) showed a strong association with all assessed SVD markers.
- These associations persisted after multivariable adjustment and in subgroups of previously healthy individuals.
Conclusions:
- 25-hydroxyvitamin D is inversely associated with key neuroimaging markers of cerebral small vessel disease.
- The findings suggest a potential link between vitamin D status and SVD.
- Future clinical trials should explore the efficacy of 25(OH)D supplementation in preventing SVD progression.
Background And Purpose:
The aim of this study was to determine the association between 25-hydroxyvitamin D (25(OH)D) and neuroimaging correlates of cerebral small vessel disease.
Methods:
We identified 759 consecutive patients with acute ischemic stroke or transient ischemic attack. Lacunes, white matter hyperintensity, and cerebral microbleed (CMB) were assessed using MR images. Deep CMB was defined as the presence of CMB in basal ganglia, thalamus, or brain stem. The association between 25(OH)D and small vessel disease was tested using linear and logistic regression analyses.
Results:
Mean age was 68 (±13) years. Mean level of 25(OH)D was 34.1±17.8 nmol/L. On bivariate analysis, a 25-nmol/L decrease in 25(OH)D was associated with lacunes (regression coefficient, 0.23; 95% confidence interval [CI], 0.02-0.45), severe white matter hyperintensity (odds ratio, 2.05; 95% CI, 1.41-3.08), and deep CMB (odds ratio, 1.28; 95% CI, 1.01-1.63). Also, 25(OH)D deficiency (≤25 nmol/L) was associated with lacunes (regression coefficient, 0.5; 95% CI, 0.04-0.95), severe white matter hyperintensity (odds ratio, 2.74; 95% CI, 1.31-6.45), and deep CMB (odds ratio, 1.68; 95% CI, 1.03-2.78). The association remained significant even after multivariable adjustment and in the subgroup of previously healthy patients.
Conclusions:
25(OH)D is inversely associated with lacunes, white matter hyperintensity, and deep CMB. Our findings suggest that 25(OH)D is linked to small vessel disease, and in future trials it should be tested whether 25(OH)D supplementation can prevent small vessel disease.
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