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Mandaviya PR, Aïssi D, Dekkers KF, Joehanes R, Kasela S, Truong V, Stolk L, Heemst DV, Ikram MA, Lindemans J, Slagboom PE, Trégouët DA, Uitterlinden AG, Wei C, Wells P, Gagnon F, van Greevenbroek MM, Heijmans BT, Milani L, Morange PE, van Meurs JB, Heil SG. Homocysteine levels associate with subtle changes in leukocyte DNA methylation: an epigenome-wide analysis. Epigenomics 2017; 9:1403-1422. [PMID: 28990796 DOI: 10.2217/epi-2017-0038] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
AIM Homocysteine (Hcy) is a sensitive marker of one-carbon metabolism. Higher Hcy levels have been associated with global DNA hypomethylation. We investigated the association between plasma Hcy and epigenome-wide DNA methylation in leukocytes. METHODS Methylation was measured using Illumina 450 k arrays in 2035 individuals from six cohorts. Hcy-associated differentially methylated positions and regions were identified using meta-analysis. RESULTS Three differentially methylated positions cg21607669 (SLC27A1), cg26382848 (AJUBA) and cg10701000 (KCNMA1) at chromosome 19, 14 and 10, respectively, were significantly associated with Hcy. In addition, we identified 68 Hcy-associated differentially methylated regions, the most significant of which was a 1.8-kb spanning domain (TNXB/ATF6B) at chromosome 6. CONCLUSION We identified novel epigenetic loci associated with Hcy levels, of which specific role needs to be further validated.
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Affiliation(s)
- Pooja R Mandaviya
- Department of Clinical Chemistry, Erasmus University Medical Center, Rotterdam, The Netherlands.,Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Dylan Aïssi
- Sorbonne Universités, UPMC Univ. Paris 06, INSERM, UMR_S 1166, Team Genomics & Pathophysiology of Cardiovascular Diseases, Paris, France.,ICAN Institute for Cardiometabolism & Nutrition, Paris, France
| | - Koen F Dekkers
- Molecular Epidemiology Section, Department of Medical Statistics & Bioinformatics, Leiden University Medical Center, Leiden, The Netherlands
| | - Roby Joehanes
- Institute for Aging Research, Hebrew SeniorLife, Harvard Medical School, Boston, MA, USA
| | - Silva Kasela
- Estonian Genome Center, University of Tartu, Tartu, Estonia.,Institute of Molecular & Cell Biology, University of Tartu, Tartu, Estonia
| | - Vinh Truong
- Division of Epidemiology, Dalla Lana School of Public Health, University of Toronto, Toronto, Canada
| | - Lisette Stolk
- Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Diana van Heemst
- Department of Gerontology & Geriatrics Section, Leiden University Medical Center, Leiden, The Netherlands
| | - M Arfan Ikram
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Jan Lindemans
- Department of Clinical Chemistry, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - P Eline Slagboom
- Molecular Epidemiology Section, Department of Medical Statistics & Bioinformatics, Leiden University Medical Center, Leiden, The Netherlands
| | - David-Alexandre Trégouët
- Sorbonne Universités, UPMC Univ. Paris 06, INSERM, UMR_S 1166, Team Genomics & Pathophysiology of Cardiovascular Diseases, Paris, France.,ICAN Institute for Cardiometabolism & Nutrition, Paris, France
| | - André G Uitterlinden
- Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Chen Wei
- Department of Epidemiology, Tulane University, New Orleans, LA, USA
| | - Phil Wells
- Department of Medicine, Ottawa Hospital Research Institute, Ottawa, Canada
| | - France Gagnon
- Division of Epidemiology, Dalla Lana School of Public Health, University of Toronto, Toronto, Canada
| | - Marleen Mj van Greevenbroek
- Department of Internal Medicine & School for Cardiovascular Diseases (CARIM), Maastricht University Medical Center, Maastricht, The Netherlands
| | - Bastiaan T Heijmans
- Molecular Epidemiology Section, Department of Medical Statistics & Bioinformatics, Leiden University Medical Center, Leiden, The Netherlands
| | - Lili Milani
- Estonian Genome Center, University of Tartu, Tartu, Estonia
| | - Pierre-Emmanuel Morange
- Laboratory of Haematology, La Timone Hospital, Marseille, France.,Institut National pour la Santé et la Recherche Médicale (INSERM), Unité Mixte de Recherche en Santé (UMR_S) 1062, Nutrition Obesity & Risk of Thrombosis, Aix-Marseille University, Marseille, France
| | - Joyce Bj van Meurs
- Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Sandra G Heil
- Department of Clinical Chemistry, Erasmus University Medical Center, Rotterdam, The Netherlands
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Liang Y, Li YP, He F, Liu XQ, Zhang JY. Long-term, regular remote ischemic preconditioning improves endothelial function in patients with coronary heart disease. ACTA ACUST UNITED AC 2015; 48:568-76. [PMID: 25923462 PMCID: PMC4470317 DOI: 10.1590/1414-431x20144452] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Accepted: 12/19/2014] [Indexed: 02/14/2023]
Abstract
Remote ischemic preconditioning (RIPre) can prevent myocardial injury. The purpose of
this study was to assess the beneficial effects of long-term regular RIPre on human
arteries. Forty patients scheduled for coronary artery bypass graft (CABG) surgery
were assigned randomly to a RIPre group (n=20) or coronary heart disease (CHD) group
(n=20). Twenty patients scheduled for mastectomy were enrolled as a control group.
RIPre was achieved by occluding arterial blood flow 5 min with a mercury
sphygmomanometer followed by a 5-min reperfusion period, and this was repeated 4
times. The RIPre procedure was repeated 3 times a day for 20 days. In all patients,
arterial fragments discarded during surgery were collected to evaluate endothelial
function by flow-mediated dilation (FMD), CD34+ monocyte count, and
endothelial nitric oxide synthase (eNOS expression). Phosphorylation levels of STAT-3
and Akt were also assayed to explore the underlying mechanisms. Compared with the CHD
group, long-term regular RIPre significantly improved FMD after 20 days (8.5±2.4
vs 4.9±4.2%, P<0.05) and significantly reduced troponin after
CABG surgery (0.72±0.31 and 1.64±0.19, P<0.05). RIPre activated STAT-3 and
increased CD34+ endothelial progenitor cell counts found in arteries.
Long-term, regular RIPre improved endothelial function in patients with CHD, possibly
due to STAT-3 activation, and this may have led to an increase in endothelial
progenitor cells.
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Affiliation(s)
- Y Liang
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Y P Li
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - F He
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - X Q Liu
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - J Y Zhang
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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Mandaviya PR, Stolk L, Heil SG. Homocysteine and DNA methylation: a review of animal and human literature. Mol Genet Metab 2014; 113:243-52. [PMID: 25456744 DOI: 10.1016/j.ymgme.2014.10.006] [Citation(s) in RCA: 94] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Revised: 10/04/2014] [Accepted: 10/04/2014] [Indexed: 11/28/2022]
Abstract
Homocysteine (Hcy) is a sulfur-containing non-protein forming amino acid, which is synthesized from methionine as an important intermediate in the one-carbon pathway. High concentrations of Hcy in a condition called hyperhomocysteinemia (HHcy) are an independent risk factor for several disorders including cardiovascular diseases and osteoporotic fractures. Since Hcy is produced as a byproduct of the methyltransferase reaction, alteration in DNA methylation is studied as one of the underlying mechanisms of HHcy-associated disorders. In animal models, elevated Hcy concentrations are induced either by diet (high methionine, low B-vitamins, or both), gene knockouts (Mthfr, Cbs, Mtrr or Mtr) or combination of both to investigate their effects on DNA methylation or its markers. In humans, most of the literature involves case-control studies concerning patients. The focus of this review is to study existing literature on HHcy and its role in relation to DNA methylation. Apart from this, a few studies investigated the effect of Hcy-lowering trials on restoring DNA methylation patterns, by giving a folic acid or B-vitamin supplemented diet. These studies which were conducted in animal models as well as humans were included in this review.
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Affiliation(s)
- Pooja R Mandaviya
- Department of Clinical Chemistry, Erasmus University Medical Center, Rotterdam, The Netherlands; Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands.
| | - Lisette Stolk
- Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands.
| | - Sandra G Heil
- Department of Clinical Chemistry, Erasmus University Medical Center, Rotterdam, The Netherlands.
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Huang A, Pinto JT, Froogh G, Kandhi S, Qin J, Wolin MS, Hintze TH, Sun D. Role of homocysteinylation of ACE in endothelial dysfunction of arteries. Am J Physiol Heart Circ Physiol 2014; 308:H92-100. [PMID: 25416191 DOI: 10.1152/ajpheart.00577.2014] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The direct impact of de novo synthesis of homocysteine (Hcy) and its reactive metabolites, Hcy-S-S-Hcy and Hcy thiolactone (HCTL), on vascular function has not been fully elucidated. We hypothesized that Hcy synthesized within endothelial cells affects activity of angiotensin-converting enzyme (ACE) by direct homocysteinylation of its amino- and/or sulfhydryl moieties. This covalent modification enhances ACE reactivity toward angiotensin II (ANG II)-NADPH oxidase-superoxide-dependent endothelial dysfunction. Mesenteric and coronary arteries isolated from normal rats were incubated for 3 days with or without exogenous methionine (Met, 0.1-0.3 mM), a precursor to Hcy. Incubation of arteries in Met-free media resulted in time-dependent decreases in vascular Hcy formation. By contrast, vessels incubated with Met produced Hcy in a dose-dependent manner. There was a notably greater de novo synthesis of Hcy from endothelial than from smooth muscle cells. Enhanced levels of Hcy production significantly impaired shear stress-induced dilation and release of nitric oxide, events that are associated with elevated production of vascular superoxide. Each of these processes was attenuated by ANG II type I receptor blocker or ACE and NADPH oxidase inhibitors. In addition, in vitro exposure of purified ACE to Hcy-S-S-Hcy/HCTL resulted in formation of homocysteinylated ACE and an enhanced ACE activity. The enhanced ACE activity was confirmed in isolated coronary and mesenteric arteries that had been exposed directly to Hcy-S-S-Hcy/HCTL or after Met incubation. In conclusion, vasculature-derived Hcy initiates endothelial dysfunction that, in part, may be mediated by ANG II-dependent activation of NADPH oxidase in association with homocysteinylation of ACE.
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Affiliation(s)
- An Huang
- Department of Physiology, New York Medical College, Valhalla, New York; and
| | - John T Pinto
- Department of Biochemistry, New York Medical College, Valhalla, New York
| | - Ghezal Froogh
- Department of Physiology, New York Medical College, Valhalla, New York; and
| | - Sharath Kandhi
- Department of Physiology, New York Medical College, Valhalla, New York; and
| | - Jun Qin
- Department of Physiology, New York Medical College, Valhalla, New York; and
| | - Michael S Wolin
- Department of Physiology, New York Medical College, Valhalla, New York; and
| | - Thomas H Hintze
- Department of Physiology, New York Medical College, Valhalla, New York; and
| | - Dong Sun
- Department of Physiology, New York Medical College, Valhalla, New York; and
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