Practical Geriatrics ›› 2022, Vol. 36 ›› Issue (5): 468-472.doi: 10.3969/j.issn.1003-9198.2022.05.009

Previous Articles     Next Articles

Analysis of genomic DNA methylation of peripheral blood in elderly patients with type 2 diabetes mellitus suffering form cardiovascular disease-induced death

FAN Yao, WANG Qiang, TANG Ji-hong, LOU Qing-lin, TANG Wei, GU Liu-bao   

  1. FAN Yao, GU Liu-bao. Division of Clinical Epidemiology; LOU Qing-lin, TANG Wei. Department of Endocrinology, Affiliated Geriatric Hospital of Nanjing Medical University, Nanjing 210024, China;
    WANG Qiang, TANG Ji-hong. School of Life Sciences, Nanjing University, Nanjing 210023, China
  • Received:2021-06-21 Online:2022-05-20 Published:2022-05-26

Abstract: Objective A genome-wide DNA methylation microarray technique was used to explore the aberrantly methylated sites in the elderly patients with type 2 diabetes mellitus(T2DM) suffering from cardiovascular disease-induced death. Methods The present study was conducted using the data from the Staged Diabetes Targeting Management (SDTM)study. The propensity score method was used to match the control, and the calipers value was set to 0.02. Twelve elderly patients with T2DM who died of cardiovascular disease until October 2017 were selected as case group. Twelve elderly patients with T2DM who survived in the same period were selected as the control group. Whole genome methylation level in periphral blood was detected by Illumina Methylation BeadChip. Gene ontology(GO) and Kyoto Encyclopedia of Genes and Genomes(KEGG) signaling pathway analysis were performed using the DAVID database. Results A total of 303 CpG sites with statistically significant differences were found. GO function analysis showed that methylation variation positions were involved in such biological process as:(1) Nervous system development, cell adhesion, glucose homeostasis and positive regulation of dendrite development; (2)Cellular component such as integral component of plasma membrane, dendrite and perinuclear region of cytoplasm; (3) Molecular function such as calcium ion binding and sequence-specific DNA binding. KEGG signaling pathway analysis found that methylation variation positions were involved in cyclic adenosine monophosphate(cAMP) signaling pathway and inflammatory mediator regulation of transient receptor potential(TRP) channels. Conclusions DNA methylation modification may be involved in the pathogenesis of the elderly patients with T2DM who die of cardiovascular disease.

Key words: aged, cardiovascular disease-induced death, type 2 diabetes mellitus, 850K methylation chip, methylation markers

CLC Number: