Bioinformatics‐based analysis of mechanistic differences in vascular endothelial injury ischemic stroke induced by atrial fibrillation and atherosclerosis

Author:

Li Jia12,Yang Rui12,Wang Shenglin12,Shen Ziyi12,Wu Bowen12,Ren Yu12,Ke Sha12,Jiang Guohui12ORCID

Affiliation:

1. Department of Neurology Affiliated Hospital of North Sichuan Medical College Nanchong China

2. Institute of Neurological Diseases North Sichuan Medical College Nanchong China

Abstract

AbstractStudies of the intracranial vasculature in patients with ischemic stroke caused by atherosclerosis (AS) and cardiac embolism have revealed significantly different degrees of AS, plaque, and vascular stenosis. And the endothelium has a great influence on the vasculature throughout the circulatory system, especially in the brain. This study aimed to investigate the mechanistic differences in endothelial injury between atrial fibrillation (AF)‐ and AS‐induced ischemic stroke. All target genes of AF, AS, and the vascular endothelial cell (VC) were obtained from the GeneCards database; the differential genes of AF and AS separately associated with the VC were established by a Venn diagram. A protein–protein interaction network was created, and Gene Ontology and Kyoto Encyclopedia of Genes and Genomes databases were used to perform genomic enrichment and functional enrichment analysis. Hub genes were selected by Maximal Clique Centrality algorithm ranking and correlation linkage in the STRING database, and then, clinical serum samples were used to verify the quantitative expressions in the AF, AF stroke, AS, and AS stroke groups. Fifty‐five AF‐VC‐related genes and ninety‐three AS‐VC‐related genes were screened, which differed in biological function, cellular composition, and molecular function. The genes correlation between AF and vascular endothelial cells (VCs) was KRAS and PTPN11, and those correlation between AS and VCs was IL‐4, IFNG, IL‐17A, and CSF‐2. IL‐4 and CSF‐2 may be relevant proteins involved in the differences in stroke mechanisms between AF and AS, and they may act by further influencing the function of their downstream cells. This study provides a preliminary theoretical basis for investigating the differences in mechanisms of endothelial injury between AF‐ and AS‐induced ischemic stroke.image

Publisher

Wiley

Subject

Cellular and Molecular Neuroscience,Biochemistry

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