4.4 Article

Is coronary artery calcium an independent risk factor for white matter hyperintensity?

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BMC NEUROLOGY
卷 23, 期 1, 页码 -

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BMC
DOI: 10.1186/s12883-023-03364-7

关键词

Atherosclerosis; Coronary artery calcium score; White matter hyperintensity; Risk factors

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This study investigated the relationship between coronary artery calcium (CAC) and white matter hyperintensity (WMH) for diagnostic purposes. The findings indicate that patients with CAC have larger WMH volumes compared to those without calcium, and the volume of WMH significantly increases with higher CAC scores.
Background Cardiovascular diseases have been considered the primary cause of disability and death worldwide. Coronary artery calcium (CAC) is an important indicator of the severity of coronary atherosclerosis. This study is aimed to investigate the relationship between CAC and white matter hyperintensity (WMH) in the context of diagnostic utility. Methods A retrospective analysis was conducted on 342 patients with a diagnosis of WMH on magnetic resonance images (MRI) who also underwent chest computed tomography (CT) scans. WMH volumes were automatically measured using a lesion prediction algorithm. Subjects were divided into four groups based on the CAC score obtained from chest CT scans. A multilevel mixed-effects linear regression model considering conventional vascular risk factors assessed the association between total WMH volume and CAC score. Results Overall, participants with coronary artery calcium (CAC score > 0) had larger WMH volumes than those without calcium (CAC score = 0), and WMH volumes were statistically different between the four CAC score groups, with increasing CAC scores, the volume of WMH significantly increased. In the linear regression model 1 of the high CAC score group, for every 1% increase in CAC score, the WMH volume increases by 2.96%. After including other covariates in model 2 and model 3, the beta coefficient in the high CAC group remains higher than in the low and medium CAC score groups. Conclusion In elderly adults, the presence and severity of CAC is related to an increase in WMH volume. Our findings suggest an association between two different vascular bed diseases in addition to traditional vascular risk factors, possibly indicating a comorbid mechanism.

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