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. 2023 Aug 30;23(1):313.
doi: 10.1186/s12883-023-03364-7.

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

Hui Jin #  1   2 , Xue Qin #  1 , Fanfan Zhao  2 , Yuting Yan  2 , Yu Meng  2 , Zhenyu Shu  2 , Xiangyang Gong  3
Affiliations

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

Hui Jin et al. BMC Neurol. .

Abstract

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 β 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.

Keywords: Atherosclerosis; Coronary artery calcium score; Risk factors; White matter hyperintensity.

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Conflict of interest statement

The authors declare that they have no competing interests.

Figures

Fig. 1
Fig. 1
The flowchart of participant recruitment and study design. CACS, coronary artery calcium score. WMH, white matter hyperintensity
Fig. 2
Fig. 2
The correlation map between statistically significant clinical risk factors and white matter hyperintensity. WMH, white matter hyperintensity; CACS, coronary artery calcium score
See this image and copyright information in PMC

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