PMID- 36352848 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20221111 IS - 2297-055X (Print) IS - 2297-055X (Electronic) IS - 2297-055X (Linking) VI - 9 DP - 2022 TI - The new mechanism of cognitive decline induced by hypertension: High homocysteine-mediated aberrant DNA methylation. PG - 928701 LID - 10.3389/fcvm.2022.928701 [doi] LID - 928701 AB - The prevalence and severity of hypertension-induced cognitive impairment increase with the prolonging of hypertension. The mechanisms of cognitive impairment induced by hypertension primarily include cerebral blood flow perfusion imbalance, white and gray matter injury with blood-brain barrier disruption, neuroinflammation and amyloid-beta deposition, genetic polymorphisms and variants, and instability of blood pressure. High homocysteine (HHcy) is an independent risk factor for hypertension that also increases the risk of developing early cognitive impairment. Homocysteine (Hcy) levels increase in patients with cognitive impairment induced by hypertension. This review summarizes a new mechanism whereby HHcy-mediated aberrant DNA methylation and exacerbate hypertension. It involves changes in Hcy-dependent DNA methylation products, such as methionine adenosyltransferase, DNA methyltransferases, S-adenosylmethionine, S-adenosylhomocysteine, and methylenetetrahydrofolate reductase (MTHFR). The mechanism also involves DNA methylation changes in the genes of hypertension patients, such as brain-derived neurotrophic factor, apolipoprotein E4, and estrogen receptor alpha, which contribute to learning, memory, and attention deficits. Studies have shown that methionine (Met) induces hypertension in mice. Moreover, DNA hypermethylation leads to cognitive behavioral changes alongside oligodendroglial and/or myelin deficits in Met-induced mice. Taken together, these studies demonstrate that DNA methylation regulates cognitive dysfunction in patients with hypertension. A better understanding of the function and mechanism underlying the effect of Hcy-dependent DNA methylation on hypertension-induced cognitive impairment will be valuable for early diagnosis, interventions, and prevention of further cognitive defects induced by hypertension. CI - Copyright (c) 2022 Wan, Zong and Chen. FAU - Wan, Chong AU - Wan C AD - Department of Military Medical Geography, Army Medical Training Base, Army Medical University (Third Military Medical University), Chongqing, China. AD - College of Basic Medicine, Army Medical University, Chongqing, China. FAU - Zong, Rui-Yi AU - Zong RY AD - Department of Military Medical Geography, Army Medical Training Base, Army Medical University (Third Military Medical University), Chongqing, China. AD - NCO School, Army Medical University, Shijiazhuang, China. FAU - Chen, Xing-Shu AU - Chen XS AD - Department of Military Medical Geography, Army Medical Training Base, Army Medical University (Third Military Medical University), Chongqing, China. LA - eng PT - Journal Article PT - Review DEP - 20221024 PL - Switzerland TA - Front Cardiovasc Med JT - Frontiers in cardiovascular medicine JID - 101653388 PMC - PMC9637555 OTO - NOTNLM OT - DNA methylation OT - Hcy OT - Met OT - cognition decline OT - hypertension COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2022/11/11 06:00 MHDA- 2022/11/11 06:01 PMCR- 2022/01/01 CRDT- 2022/11/10 02:04 PHST- 2022/04/26 00:00 [received] PHST- 2022/09/30 00:00 [accepted] PHST- 2022/11/10 02:04 [entrez] PHST- 2022/11/11 06:00 [pubmed] PHST- 2022/11/11 06:01 [medline] PHST- 2022/01/01 00:00 [pmc-release] AID - 10.3389/fcvm.2022.928701 [doi] PST - epublish SO - Front Cardiovasc Med. 2022 Oct 24;9:928701. doi: 10.3389/fcvm.2022.928701. eCollection 2022.