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CDKN2B Methylation and Aortic Arch Calcification in Patients with Ischemic Stroke

Aim: CDKN2A/2B near chromosome 9p21 has been proposed as a potential genetic etiology for both atherosclerosis and arterial calcification. DNA methylation, which can change the expression of CDKN2A/2B, may be an underlying mechanism for this association. This study aimed to evaluate whether CDKN2A/2...

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Detalles Bibliográficos
Autores principales: Zhou, Shuyu, Cai, Biyang, Zhang, Zhizhong, Zhang, Yumeng, Wang, Li, Liu, Keting, Zhang, Hao, Sun, Lingli, Cai, Huan, Lu, Guangming, Liu, Xinfeng, Xu, Gelin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Japan Atherosclerosis Society 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5453686/
https://www.ncbi.nlm.nih.gov/pubmed/27773886
http://dx.doi.org/10.5551/jat.36897
Descripción
Sumario:Aim: CDKN2A/2B near chromosome 9p21 has been proposed as a potential genetic etiology for both atherosclerosis and arterial calcification. DNA methylation, which can change the expression of CDKN2A/2B, may be an underlying mechanism for this association. This study aimed to evaluate whether CDKN2A/2B methylation is related to aortic arch calcification (AAC) in patients with ischemic stroke. Methods: DNA methylation levels of CDKN2A/2B was measured using venous blood samples in 322 patients with ischemic stroke. A total of 36 CpG sites around promoter regions of CDKN2A/2B were examined. AAC was quantified with Agatston score based on results of computed tomography angiography. Results: There were 248 (77.0%) patients with and 74 (23.0%) patients without evident AAC. Compared with patients without AAC, patients with AAC had higher methylation levels of CDKN2B (5.72 vs 4.94, P < 0.001). Using a generalized linear model, positive correlation between methylation levels and log-transformed calcification scores was detected at CDKN2B (β = 0.275 ± 0.116, P = 0.018). Conclusion: Patients with higher levels of DNA methylation of CDKN2B may bear increased risk for AAC. Further studies to reveal the underlying mechanisms of this association are warranted for establishing a cause–effect relationship.