51
|
Zhou Z, Sun B, Li X, Zhu C. DNA methylation landscapes in the pathogenesis of type 2 diabetes mellitus. Nutr Metab (Lond) 2018; 15:47. [PMID: 29988495 PMCID: PMC6025823 DOI: 10.1186/s12986-018-0283-x] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 06/18/2018] [Indexed: 01/22/2023] Open
Abstract
Although genetic variations and environmental factors are vital to the development and progression of type 2 diabetes mellitus (T2DM), emerging literature suggest that epigenetics, especially DNA methylation, play a key role in the pathogenesis of T2DM by affecting insulin secretion of pancreatic β cells and the body’s resistance to insulin. Previous studies have elucidated how DNA methylation interacted with various factors in T2DM pathogenesis. This review summarized the role of related methylation genes in insulin-sensitive organs, such as pancreatic islets, skeletal muscle, liver, brain and adipose tissue, as well as peripheral blood cells, comparing the tissue similarity and specificity of methylated genes, aiming at a better understanding of the pathogenesis of T2DM and providing new ideas for the personalized treatment of this metabolism-associated disease.
Collapse
Affiliation(s)
- Zheng Zhou
- 1Department of Chinese Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000 China
| | - Bao Sun
- 2Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, 410000 China.,3Hunan Key Laboratory of Pharmacogenetics, Institute of Clinical Pharmacology, Central South University, Changsha, 410000 China
| | - Xiaoping Li
- 1Department of Chinese Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000 China
| | - Chunsheng Zhu
- 1Department of Chinese Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000 China
| |
Collapse
|
52
|
Zhang SJ, Wang Y, Yang YL, Zheng H. Aberrant DNA Methylation Involved in Obese Women with Systemic Insulin Resistance. Open Life Sci 2018; 13:201-207. [PMID: 33817084 PMCID: PMC7874722 DOI: 10.1515/biol-2018-0024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Accepted: 01/08/2018] [Indexed: 01/03/2023] Open
Abstract
Background Epigenetics has been recognized as a significant regulator in many diseases. White adipose tissue (WAT) epigenetic dysregulation is associated with systemic insulin resistance (IR). The aim of this study was to survey the differential methylation of genes in obese women with systemic insulin resistance by DNA methylation microarray. Methods The genome-wide methylation profile of systemic insulin resistant obese women was obtained from Gene Expression Omnibus database. After data preprocessing, differing methylation patterns between insulin resistant and sensitive obese women were identified by Student's t-test and methylation value differences. Network analysis was then performed to reveal co-regulated genes of differentially methylated genes. Functional analysis was also implemented to reveal the underlying biological processes related to systemic insulin resistance in obese women. Results Relative to insulin sensitive obese women, we initially screened 10,874 differentially methylated CpGs, including 7402 hyper-methylated sites and 6073 hypo-methylated CpGs. Our analysis identified 4 significantly differentially methylated genes, including SMYD3, UST, BCL11A, and BAI3. Network and functional analyses found that these differentially methylated genes were mainly involved in chondroitin and dermatan sulfate biosynthetic processes. Conclusion Based on our study, we propose several epigenetic biomarkers that may be related to obesity-associated insulin resistance. Our results provide new insights into the epigenetic regulation of disease etiology and also identify novel targets for insulin resistance treatment in obese women.
Collapse
Affiliation(s)
- Shao-Jun Zhang
- Department of Endocrinology, The People's Hospital of Shanxi Province, Taiyuan, Shanxi 030012, China.,Department of Endocrinology, The Sixth Division Hospital of Xinjiang Production and Construction Corps, Wujiaqu, Xinjiang 830025, China
| | - Yan Wang
- Medical Laboratory Diagnosis Center, Jinan Central Hospital, Jinan, Shandong 250013, China
| | - Yan-Lan Yang
- Department of Endocrinology, The People's Hospital of Shanxi Province, Taiyuan, Shanxi 030012, China
| | - Hong Zheng
- Department of Endocrinology, The Second Affiliated Hospital of Dalian Medical University, No. 467 Zhongshan Road, Shahekou District, Dalian, Liaoning 116023, China
| |
Collapse
|
53
|
Joselit Y, Nanobashvili K, Jack-Roberts C, Greenwald E, Malysheva OV, Caudill MA, Saxena A, Jiang X. Maternal betaine supplementation affects fetal growth and lipid metabolism of high-fat fed mice in a temporal-specific manner. Nutr Diabetes 2018; 8:41. [PMID: 30026535 PMCID: PMC6053452 DOI: 10.1038/s41387-018-0035-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 04/02/2018] [Accepted: 04/16/2018] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND/OBJECTIVES Maternal obesity increases the risk of gestational diabetes mellitus (GDM), which results in fetal overgrowth and long-lasting metabolic dysfunctioning in the offspring. Previous studies show that maternal choline supplementation normalizes fetal growth and adiposity of progeny from obese mice. This study examines whether supplementation of betaine, a choline derivative, has positive effects on fetal metabolic outcomes in mouse progeny exposed to maternal obesity and GDM. METHODS C57BL/6J mice were fed either a high-fat (HF) diet or a control (normal-fat, NF) diet and received either 1% betaine (BS) or control untreated (BC) drinking water 4-6 weeks before timed-mating and throughout gestation. Maternal, placental, and fetal samples were collected for metabolite and gene-expression assays. RESULTS At E12.5, BS prevented fetal and placental overgrowth and downregulated glucose and fatty acid transporters (Glut1 and Fatp1) and the growth-promoting insulin-like growth factor 2 (Igf2) and its receptor Igf1r in the placenta of HF, glucose-intolerant dams (P < 0.05). However, these effects disappeared at E17.5. At E17.5, BS reduced fetal adiposity and prevented liver triglyceride overaccumulation in HF versus NF fetuses (P < 0.05). BS fetal livers had enhanced mRNA expression of microsomal triglyceride transfer protein (Mttp) (P < 0.01), which promotes VLDL synthesis and secretion. Although we previously reported that maternal choline supplementation downregulated mRNA expression of genes involved in de novo lipogenesis in fetal livers, such alterations were not observed with BS, suggesting differential effects of betaine and choline on fetal gene expression. CONCLUSION We propose a temporal-specific mechanism by which maternal BS influences fetal growth and lipid metabolic outcomes of HF mice during prenatal development.
Collapse
Affiliation(s)
- Yaelle Joselit
- Departments of Health and Nutrition Sciences, Brooklyn College of City University of New York, Brooklyn, NY, 11210, USA
| | - Khatia Nanobashvili
- Departments of Health and Nutrition Sciences, Brooklyn College of City University of New York, Brooklyn, NY, 11210, USA
| | - Chauntelle Jack-Roberts
- Departments of Health and Nutrition Sciences, Brooklyn College of City University of New York, Brooklyn, NY, 11210, USA
| | - Esther Greenwald
- Departments of Health and Nutrition Sciences, Brooklyn College of City University of New York, Brooklyn, NY, 11210, USA
| | - Olga V Malysheva
- Division of Nutritional Sciences, Cornell University, Ithaca, NY, 14853, USA
| | - Marie A Caudill
- Division of Nutritional Sciences, Cornell University, Ithaca, NY, 14853, USA
| | - Anjana Saxena
- Departments of Biology, Brooklyn College of City University of New York, Brooklyn, NY, 11210, USA
| | - Xinyin Jiang
- Departments of Health and Nutrition Sciences, Brooklyn College of City University of New York, Brooklyn, NY, 11210, USA.
| |
Collapse
|
54
|
Shepherd DL, Hathaway QA, Nichols CE, Durr AJ, Pinti MV, Hughes KM, Kunovac A, Stine SM, Hollander JM. Mitochondrial proteome disruption in the diabetic heart through targeted epigenetic regulation at the mitochondrial heat shock protein 70 (mtHsp70) nuclear locus. J Mol Cell Cardiol 2018; 119:104-115. [PMID: 29733819 DOI: 10.1016/j.yjmcc.2018.04.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 04/26/2018] [Accepted: 04/28/2018] [Indexed: 01/17/2023]
Abstract
>99% of the mitochondrial proteome is nuclear-encoded. The mitochondrion relies on a coordinated multi-complex process for nuclear genome-encoded mitochondrial protein import. Mitochondrial heat shock protein 70 (mtHsp70) is a key component of this process and a central constituent of the protein import motor. Type 2 diabetes mellitus (T2DM) disrupts mitochondrial proteomic signature which is associated with decreased protein import efficiency. The goal of this study was to manipulate the mitochondrial protein import process through targeted restoration of mtHsp70, in an effort to restore proteomic signature and mitochondrial function in the T2DM heart. A novel line of cardiac-specific mtHsp70 transgenic mice on the db/db background were generated and cardiac mitochondrial subpopulations were isolated with proteomic evaluation and mitochondrial function assessed. MicroRNA and epigenetic regulation of the mtHsp70 gene during T2DM were also evaluated. MtHsp70 overexpression restored cardiac function and nuclear-encoded mitochondrial protein import, contributing to a beneficial impact on proteome signature and enhanced mitochondrial function during T2DM. Further, transcriptional repression at the mtHsp70 genomic locus through increased localization of H3K27me3 during T2DM insult was observed. Our results suggest that restoration of a key protein import constituent, mtHsp70, provides therapeutic benefit through attenuation of mitochondrial and contractile dysfunction in T2DM.
Collapse
Affiliation(s)
- Danielle L Shepherd
- Division of Exercise Physiology, Mitochondrial, Metabolism and Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV 26505, United States
| | - Quincy A Hathaway
- Division of Exercise Physiology, Mitochondrial, Metabolism and Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV 26505, United States
| | - Cody E Nichols
- Division of Exercise Physiology, Mitochondrial, Metabolism and Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV 26505, United States
| | - Andrya J Durr
- Division of Exercise Physiology, Mitochondrial, Metabolism and Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV 26505, United States
| | - Mark V Pinti
- Division of Exercise Physiology, Mitochondrial, Metabolism and Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV 26505, United States
| | - Kristen M Hughes
- Division of Exercise Physiology, Mitochondrial, Metabolism and Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV 26505, United States
| | - Amina Kunovac
- Division of Exercise Physiology, Mitochondrial, Metabolism and Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV 26505, United States
| | - Seth M Stine
- Division of Exercise Physiology, Mitochondrial, Metabolism and Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV 26505, United States
| | - John M Hollander
- Division of Exercise Physiology, Mitochondrial, Metabolism and Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV 26505, United States.
| |
Collapse
|
55
|
Willmer T, Johnson R, Louw J, Pheiffer C. Blood-Based DNA Methylation Biomarkers for Type 2 Diabetes: Potential for Clinical Applications. Front Endocrinol (Lausanne) 2018; 9:744. [PMID: 30564199 PMCID: PMC6288427 DOI: 10.3389/fendo.2018.00744] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Accepted: 11/23/2018] [Indexed: 12/22/2022] Open
Abstract
Type 2 diabetes (T2D) is a leading cause of death and disability worldwide. It is a chronic metabolic disorder that develops due to an interplay of genetic, lifestyle, and environmental factors. The biological onset of the disease occurs long before clinical symptoms develop, thus the search for early diagnostic and prognostic biomarkers, which could facilitate intervention strategies to prevent or delay disease progression, has increased considerably in recent years. Epigenetic modifications represent important links between genetic, environmental and lifestyle cues and increasing evidence implicate altered epigenetic marks such as DNA methylation, the most characterized and widely studied epigenetic mechanism, in the pathogenesis of T2D. This review provides an update of the current status of DNA methylation as a biomarker for T2D. Four databases, Scopus, Pubmed, Cochrane Central, and Google Scholar were searched for studies investigating DNA methylation in blood. Thirty-seven studies were identified, and are summarized with respect to population characteristics, biological source, and method of DNA methylation quantification (global, candidate gene or genome-wide). We highlight that differential methylation of the TCF7L2, KCNQ1, ABCG1, TXNIP, PHOSPHO1, SREBF1, SLC30A8, and FTO genes in blood are reproducibly associated with T2D in different population groups. These genes should be prioritized and replicated in longitudinal studies across more populations in future studies. Finally, we discuss the limitations faced by DNA methylation studies, which include including interpatient variability, cellular heterogeneity, and lack of accounting for study confounders. These limitations and challenges must be overcome before the implementation of blood-based DNA methylation biomarkers into a clinical setting. We emphasize the need for longitudinal prospective studies to support the robustness of the current findings of this review.
Collapse
Affiliation(s)
- Tarryn Willmer
- Biomedical Research and Innovation Platform, South African Medical Research Council, Tygerberg, South Africa
- *Correspondence: Tarryn Willmer
| | - Rabia Johnson
- Biomedical Research and Innovation Platform, South African Medical Research Council, Tygerberg, South Africa
- Division of Medical Physiology, Faculty of Health Sciences, Stellenbosch University, Tygerberg, South Africa
| | - Johan Louw
- Biomedical Research and Innovation Platform, South African Medical Research Council, Tygerberg, South Africa
- Department of Biochemistry and Microbiology, University of Zululand, Kwa-Dlangezwa, South Africa
| | - Carmen Pheiffer
- Biomedical Research and Innovation Platform, South African Medical Research Council, Tygerberg, South Africa
- Division of Medical Physiology, Faculty of Health Sciences, Stellenbosch University, Tygerberg, South Africa
| |
Collapse
|
56
|
Prattichizzo F, De Nigris V, Spiga R, Mancuso E, La Sala L, Antonicelli R, Testa R, Procopio AD, Olivieri F, Ceriello A. Inflammageing and metaflammation: The yin and yang of type 2 diabetes. Ageing Res Rev 2018; 41:1-17. [PMID: 29081381 DOI: 10.1016/j.arr.2017.10.003] [Citation(s) in RCA: 167] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 09/21/2017] [Accepted: 10/23/2017] [Indexed: 12/19/2022]
Abstract
Type 2 diabetes mellitus (T2DM) is characterised by chronic low-grade inflammation, recently referred to as 'metaflammation', a relevant factor contributing to the development of both diabetes and its complications. Nonetheless, 'canonical' anti-inflammatory drugs do not yield satisfactory results in terms of prevention of diabetes progression and of cardiovascular events, suggesting that the causal mechanisms fostering metaflammation deserve further research to identify new druggable targets. Metaflammation resembles ageing-induced low-grade inflammation, previously referred to as inflammageing, in terms of clinical presentation and the molecular profile, pointing to a common aetiology for both conditions. Along with the mechanisms proposed to fuel inflammageing, here we dissect a plethora of pathological cascades triggered by gluco- and lipotoxicity, converging on candidate phenomena possibly explaining the enduring pro-inflammatory program observed in diabetic tissues, i.e. persistent immune-system stimulation, accumulation of senescent cells, epigenetic rearrangements, and alterations in microbiota composition. We discuss the possibility of harnessing these recent discoveries in future therapies for T2DM. Moreover, we review recent evidence regarding the ability of diets and physical exercise to modulate selected inflammatory pathways relevant for the diabetic pathology. Finally, we examine the latest findings showing putative anti-inflammatory mechanisms of anti-hyperglycaemic agents with proven efficacy against T2DM-induced cardiovascular complications, in order to gain insights into quickly translatable therapeutic approaches.
Collapse
|
57
|
You D, Nilsson E, Tenen DE, Lyubetskaya A, Lo JC, Jiang R, Deng J, Dawes BA, Vaag A, Ling C, Rosen ED, Kang S. Dnmt3a is an epigenetic mediator of adipose insulin resistance. eLife 2017; 6:30766. [PMID: 29091029 PMCID: PMC5730374 DOI: 10.7554/elife.30766] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Accepted: 10/29/2017] [Indexed: 12/21/2022] Open
Abstract
Insulin resistance results from an intricate interaction between genetic make-up and environment, and thus may be orchestrated by epigenetic mechanisms like DNA methylation. Here, we demonstrate that DNA methyltransferase 3a (Dnmt3a) is both necessary and sufficient to mediate insulin resistance in cultured mouse and human adipocytes. Furthermore, adipose-specific Dnmt3a knock-out mice are protected from diet-induced insulin resistance and glucose intolerance without accompanying changes in adiposity. Unbiased gene profiling studies revealed Fgf21 as a key negatively regulated Dnmt3a target gene in adipocytes with concordant changes in DNA methylation at the Fgf21 promoter region. Consistent with this, Fgf21 can rescue Dnmt3a-mediated insulin resistance, and DNA methylation at the FGF21 locus was elevated in human subjects with diabetes and correlated negatively with expression of FGF21 in human adipose tissue. Taken together, our data demonstrate that adipose Dnmt3a is a novel epigenetic mediator of insulin resistance in vitro and in vivo.
Collapse
Affiliation(s)
- Dongjoo You
- Nutritional Sciences and Toxicology Department, University of California, Berkeley, Berkeley, United States
| | - Emma Nilsson
- Epigenetics and Diabetes Unit, Department of Clinical Sciences, Lund University Diabetes Centre, Scania University Hospital, Malmö, Sweden
| | - Danielle E Tenen
- Division of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center, Boston, United States
| | | | - James C Lo
- Weill Cornell Medical College, New York, United States
| | - Rencong Jiang
- Nutritional Sciences and Toxicology Department, University of California, Berkeley, Berkeley, United States
| | - Jasmine Deng
- Nutritional Sciences and Toxicology Department, University of California, Berkeley, Berkeley, United States
| | - Brian A Dawes
- Division of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center, Boston, United States
| | - Allan Vaag
- Diabetes and Metabolism, Department of Endocrinology, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark.,Early Clinical Development, AstraZeneca, Innovative Medicines, Göteborg, Sweden
| | - Charlotte Ling
- Epigenetics and Diabetes Unit, Department of Clinical Sciences, Lund University Diabetes Centre, Scania University Hospital, Malmö, Sweden
| | - Evan D Rosen
- Division of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center, Boston, United States.,Broad Institute of Harvard and MIT, Cambridge, United States
| | - Sona Kang
- Nutritional Sciences and Toxicology Department, University of California, Berkeley, Berkeley, United States
| |
Collapse
|
58
|
Cheng Z, Zheng L, Almeida FA. Epigenetic reprogramming in metabolic disorders: nutritional factors and beyond. J Nutr Biochem 2017; 54:1-10. [PMID: 29154162 DOI: 10.1016/j.jnutbio.2017.10.004] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 09/26/2017] [Accepted: 10/10/2017] [Indexed: 12/13/2022]
Abstract
Environmental factors (e.g., malnutrition and physical inactivity) contribute largely to metabolic disorders including obesity, type 2 diabetes, cardiometabolic disease and nonalcoholic fatty liver diseases. The abnormalities in metabolic activity and pathways have been increasingly associated with altered DNA methylation, histone modification and noncoding RNAs, whereas lifestyle interventions targeting diet and physical activity can reverse the epigenetic and metabolic changes. Here we review recent evidence primarily from human studies that links DNA methylation reprogramming to metabolic derangements or improvements, with a focus on cross-tissue (e.g., the liver, skeletal muscle, pancreas, adipose tissue and blood samples) epigenetic markers, mechanistic mediators of the epigenetic reprogramming, and the potential of using epigenetic traits to predict disease risk and intervention response. The challenges in epigenetic studies addressing the mechanisms of metabolic diseases and future directions are also discussed and prospected.
Collapse
Affiliation(s)
- Zhiyong Cheng
- Department of Human Nutrition, Foods, and Exercise, Fralin Translational Obesity Research Center, College of Agriculture and Life Science, Virginia Tech, Blacksburg, VA 24061, USA.
| | - Louise Zheng
- Department of Human Nutrition, Foods, and Exercise, Fralin Translational Obesity Research Center, College of Agriculture and Life Science, Virginia Tech, Blacksburg, VA 24061, USA
| | - Fabio A Almeida
- Department of Health Promotion, Social & Behavioral Health, College of Public Health, University of Nebraska Medical Center, Omaha, NE 68198, USA.
| |
Collapse
|
59
|
Li J, Goh CE, Demmer RT, Whitcomb BW, Du P, Liu Z. Association between Serum Folate and Insulin Resistance among U.S. Nondiabetic Adults. Sci Rep 2017; 7:9187. [PMID: 28835661 PMCID: PMC5569086 DOI: 10.1038/s41598-017-09522-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 07/17/2017] [Indexed: 02/02/2023] Open
Abstract
Recent studies have suggested that epigenetic alterations, particularly DNA methylation, play a crucial role in the pathogenesis of insulin resistance. Folate is a key source of the one-carbon group for DNA methylation, whereas the association and mechanistic linkage between folate status and insulin resistance remains unclear with very limited experimental support. We performed a cross-sectional study of 1530 nondiabetic adults in the 2011–2012 National Health and Nutrition Examination Survey (NHANES). We examined associations between serum folate and insulin resistance using multiple linear regression models adjusted for potential confounders. We detected a significant inverse relationship for serum folate, where a 25% increase in serum folate was associated with a 3.06% (95% CI, −4.72, −1.37) and 2.77% (95% CI, −4.36, −1.77) decline in HOMA-IR and insulin respectively, and a 2.55% (95% CI, 0.93, 4.21) increase in G/I ratio. Our findings demonstrate that serum folate was inversely associated with insulin resistance in U.S. nondiabetic adults.
Collapse
Affiliation(s)
- Jinchao Li
- Department of Nutrition, School of Public Health and Health Sciences, University of Massachusetts, Amherst, MA, USA
| | - Charlene E Goh
- Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York, USA
| | - Ryan T Demmer
- Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York, USA
| | - Brian W Whitcomb
- Department of Biostatistics and Epidemiology, University of Massachusetts, Amherst, MA, USA
| | - Peng Du
- Department of Mathematics and Statistics, University of Massachusetts, Amherst, MA, USA
| | - Zhenhua Liu
- Department of Nutrition, School of Public Health and Health Sciences, University of Massachusetts, Amherst, MA, USA. .,Jean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, Boston, MA, USA.
| |
Collapse
|
60
|
Dalgaard JZ. What is the underlying cause of type II diabetes? – Are cells protecting themselves against the reactivity of glucose? Med Hypotheses 2017; 105:22-24. [DOI: 10.1016/j.mehy.2017.06.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 04/23/2017] [Accepted: 06/22/2017] [Indexed: 12/27/2022]
|
61
|
Sundheimer LW, Pisarska MD. Abnormal Placentation Associated with Infertility as a Marker of Overall Health. Semin Reprod Med 2017; 35:205-216. [PMID: 28658703 DOI: 10.1055/s-0037-1603570] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
AbstractInfertility and fertility treatments utilized are associated with abnormal placentation leading to adverse pregnancy outcomes related to placentation, including preterm birth, low birth weight, placenta accrete, and placenta previa. This may be due to the underlying genetics predisposing to infertility or the epigenetic changes associated with the fertility treatments utilized, as specific disease states leading to infertility are at increased risk of adverse outcomes, including placental abruption, fetal loss, gestational diabetes mellitus, and outcomes related to placentation, as well as the treatments utilized including in vitro fertilization (IVF) and non-IVF fertility treatment. Placentation defects, leading to adverse maternal and fetal outcomes, which are more pronounced in the infertile population, occur due to changes in trophoblast invasion, vascular defects, changes in the environmental milieu, chronic inflammation, and oxidative stress. These similar processes are recognized as major contributors to lifelong risk of cardiovascular and metabolic disease for both the mother and her offspring. Thus, abnormal placentation, found to be more prevalent in the infertile population, may be the key to better understand how infertility affects overall and long-term health.
Collapse
Affiliation(s)
- Lauren W Sundheimer
- Department of Obstetrics and Gynecology, Cedars-Sinai Medical Center, Los Angeles, California.,Division of Reproductive Endocrinology and Infertility, UCLA David Geffen School of Medicine, Los Angeles, California
| | - Margareta D Pisarska
- Department of Obstetrics and Gynecology, Cedars-Sinai Medical Center, Los Angeles, California.,Division of Reproductive Endocrinology and Infertility, UCLA David Geffen School of Medicine, Los Angeles, California
| |
Collapse
|
62
|
Chernikov AA, Severina AS, Shamhalova MS, Shestakova MV. The role of «metabolic memory» mechanisms in the development and progression of vascular complications of diabetes mellitus. DIABETES MELLITUS 2017. [DOI: 10.14341/7674] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The study of diabetes mellitus (DM), its complications and related pathologies has been continuously performed for many years; however, despite the substantial work and outstanding achievements in studying the mechanisms of DM development and the success of new medicinal products for controlling glycaemia, the problems associated with the late complications of DM continue to increase. The importance of glycaemic control in the early stages of DM for the development of complications is seen only after a sufficiently long period of observation. Such a delayed effect of primary good or unsatisfactory metabolic control, which shapes the patients clinical fate to a greater extent, is termed metabolic memory. The disorders developed under the influence of hyperglycaemia persist for long periods after the normalisation of carbohydrate metabolism; moreover, the effect of previous hyperglycaemia extends over the next 20 and even 30 years. Current research is focused on the possible mechanisms of metabolic memory development, including oxidative stress, advanced glycation end products and epigenetic mechanisms. This research will provide insight into potential markers for the early development and progression of vascular complications and new therapeutic possibilities for the future. However, determining the probable point of no return is more important, which implies that a point exists; after this point is crossed, the progression of vascular complications associated with DM cannot be prevented or reversed. The results of numerous experimental studies demonstrate that the prerequisite components of metabolic memory can be used as potential markers of the progression of DM complications, and may be potential therapeutic targets.
Collapse
|
63
|
Zhou Y, Simmons D, Lai D, Hambly BD, McLachlan CS. rs9939609 FTO genotype associations with FTO methylation level influences body mass and telomere length in an Australian rural population. Int J Obes (Lond) 2017; 41:1427-1433. [PMID: 28559540 DOI: 10.1038/ijo.2017.127] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 03/26/2017] [Accepted: 05/07/2017] [Indexed: 12/18/2022]
Abstract
BACKGROUND The fat mass- and obesity-associated (FTO) gene influences energy homeostasis in humans. Although the obesity-related variant, rs9939609 has been replicated across a number of cohort studies, there remains significant variance and a low to modest association. Telomere length is another commonly reported obesity risk factor. We hypothesize understanding the associations between FTO rs9939609 with FTO methylation and telomere length will provide a more accurate assessment of obesity risk. METHODS Overall, 942 participants free of diabetes or pre-diabetes were included in the retrospective study. Leukocyte genomic DNA was analyzed for rs9939609 genotyping, FTO gene methylation and leukocyte telomere length (LTL) measurement. RESULTS In general linear models, rs9939609 AA genotypes were associated with increased fat percentage (3.15%, P=0.001), fat mass (4.16 kg, P=0.001), body mass index (BMI) (1.38, P=0.006) and waist circumference (3.35 cm, P=0.006), but not with FTO methylation or LTL in this overall population. However, when participants were stratified into higher and lower FTO methylation groups, the AA genotype possesses a 2.04-fold increased obesity risk in comparison to TT genotype (95%CI, 1.07-3.89, P=0.031) in participants with a higher FTO methylation level, but this association was absent in the lower FTO methylation sub-group. Moreover, AT and AA genotype carriers were associated with shorter LTL compared to TT carriers (P=0.020 and P=0.111, respectively) in the higher FTO methylation level group. However, this association was absent in the lower methylation group. Furthermore, FTO gene methylation level was significantly associated with LTL in the 942 samples (P=0.017). CONCLUSIONS FTO rs9939609 is associated with obesity risk and LTL in this study, where this association is only observed at higher, but not lower, FTO methylation levels of participants. Our data suggest association of multiple factors, including FTO methylation level, may be involved in one of several mechanisms underlying the commonly reported obesity risk of this FTO polymorphism.
Collapse
Affiliation(s)
- Y Zhou
- Rural Clinical School, University of New South Wales, Sydney, New South Wales, Australia
| | - D Simmons
- Rural Clinical School, University of MelbourneI, Shepparton, Victoria, Australia.,School of Medicine, Western Sydney University, Sydney, New South Wales, Australia
| | - D Lai
- School of Medical Sciences and Bosch Institute, University of Sydney, Sydney, New South Wales, Australia
| | - B D Hambly
- Discipline of Pathology and Bosch Institute, University of Sydney, Sydney, New South Wales, Australia
| | - C S McLachlan
- Rural Clinical School, University of New South Wales, Sydney, New South Wales, Australia
| |
Collapse
|
64
|
Onuma H, Tabara Y, Kawamura R, Ohashi J, Nishida W, Takata Y, Ochi M, Nishimiya T, Ohyagi Y, Kawamoto R, Kohara K, Miki T, Osawa H. Dual Effects of a RETN Single Nucleotide Polymorphism (SNP) at -420 on Plasma Resistin: Genotype and DNA Methylation. J Clin Endocrinol Metab 2017; 102:884-892. [PMID: 27929711 DOI: 10.1210/jc.2016-2417] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2016] [Accepted: 12/07/2016] [Indexed: 02/03/2023]
Abstract
CONTEXT We previously reported that single nucleotide polymorphism (SNP)-420 C>G (rs1862513) in the promoter region of RETN was associated with type 2 diabetes. Plasma resistin was tightly correlated with SNP-420 genotypes. SNP-420 is a CpG-SNP affecting the sequence of cytosine-phosphate-guanine dinucleotides. OBJECTIVE To examine whether methylation at SNP-420 affects plasma resistin, we analyzed plasma resistin and methylation at RETN SNP-420. DESIGN AND METHODS Genomic DNA was extracted from peripheral white blood cells in 2078 Japanese subjects. Quantification of the methylation was performed by pyrosequencing after DNA bisulfite conversion. RESULTS Methylation at SNP-420 was highest in the C/C genotype (36.9 ± 5.7%), followed by C/G (21.4 ± 3.5%) and G/G (2.9 ± 1.4%; P < 0.001). When assessed in each genotype, methylation at SNP-420 was inversely associated with plasma resistin in the C/C (β = -0.134, P < 0.001) or C/G (β = -0.227, P < 0.001) genotype. In THP-1 human monocytes intrinsically having the C/C genotype, a demethylating reagent, 5-aza-dC, decreased the methylation at SNP-420 and increased RETN messenger RNA. SNP+1263 (rs3745369), located in the 3' untranslated region of RETN, was also associated with methylation at SNP-420. In addition, highly sensitive C-reactive protein was inversely associated with methylation at SNP-420 in the C/C genotype, whereas body mass index was positively associated. CONCLUSIONS Plasma resistin was inversely associated with the extent of methylation at SNP-420 mainly dependent on the SNP-420 genotype. The association can also be explained partially independent of SNP-420 genotypes. SNP-420 could have dual, genetic and epigenetic effects on plasma resistin.
Collapse
Affiliation(s)
| | - Yasuharu Tabara
- Center for Genomic Medicine, Kyoto University Graduate School of Medicine, Kyoto 606-8507, Japan; and
| | | | - Jun Ohashi
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo 113-8654, Japan
| | | | | | | | | | | | - Ryuichi Kawamoto
- Community Medicine, Ehime University Graduate School of Medicine, Ehime 791-0295, Japan
| | | | | | | |
Collapse
|
65
|
Vailati-Riboni M, Osorio JS, Trevisi E, Luchini D, Loor JJ. Supplemental Smartamine M in higher-energy diets during the prepartal period improves hepatic biomarkers of health and oxidative status in Holstein cows. J Anim Sci Biotechnol 2017; 8:17. [PMID: 28191311 PMCID: PMC5295218 DOI: 10.1186/s40104-017-0147-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Accepted: 01/18/2017] [Indexed: 12/16/2022] Open
Abstract
Background Feeding higher-energy prepartum is a common practice in the dairy industry. However, recent data underscore how it could reduce performance, deepen negative energy balance, and augment inflammation and oxidative stress in fresh cows. We tested the effectiveness of rumen-protected methionine in preventing the negative effect of feeding a higher-energy prepartum. Multiparous Holstein cows were fed a control lower-energy diet (CON, 1.24 Mcal/kg DM; high-straw) during the whole dry period (~50 d), or were switched to a higher-energy (OVE, 1.54 Mcal/kg DM), or OVE plus Smartamine M (OVE + SM; Adisseo NA) during the last 21 d before calving. Afterwards cows received the same lactation diet (1.75 Mcal/kg DM). Smartamine M was top-dressed on the OVE diet (0.07% of DM) from -21 through 30 d in milk (DIM). Liver samples were obtained via percutaneous biopsy at -10, 7 and 21 DIM. Expression of genes associated with energy and lipid metabolism, hepatokines, methionine cycle, antioxidant capacity and inflammation was measured. Results Postpartal dry matter intake, milk yield, and energy-corrected milk were higher in CON and OVE + SM compared with OVE. Furthermore, milk protein and fat percentages were greater in OVE + SM compared with CON and OVE. Expression of the gluconeogenic gene PCK1 and the lipid-metabolism transcription regulator PPARA was again greater with CON and OVE + SM compared with OVE. Expression of the lipoprotein synthesis enzyme MTTP was lower in OVE + SM than CON or OVE. Similarly, the hepatokine FGF21, which correlates with severity of negative energy balance, was increased postpartum only in OVE compared to the other two groups. These results indicate greater liver metabolism and functions to support a greater production in OVE + SM. At 7 DIM, the enzyme GSR involved in the synthesis of glutathione tended to be upregulated in OVE than CON-fed cows, suggesting a greater antioxidant demand in overfed cows. Feeding OVE + SM resulted in lower similar expression of GSR compared with CON. Expression of the methionine cycle enzymes SAHH and MTR, both of which help synthesize methionine endogenously, was greater prepartum in OVE + SM compared with both CON and OVE, and at 7 DIM for CON and OVE + SM compared with OVE, suggesting greater Met availability. It is noteworthy that DNMT3A, which utilizes S-adenosylmethionine generated in the methionine cycle, was greater in OVE and OVE + SM indicating higher-energy diets might enhance DNA methylation, thus, Met utilization. Conclusions Data indicate that supplemental Smartamine M was able to compensate for the negative effect of prepartal energy-overfeeding by alleviating the demand for intracellular antioxidants, thus, contributing to the increase in production. Moreover Smartamine M improved hepatic lipid and glucose metabolism, leading to greater liver function and better overall health. Electronic supplementary material The online version of this article (doi:10.1186/s40104-017-0147-7) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Mario Vailati-Riboni
- Mammalian NutriPhysioGenomics, Department of Animal Sciences and Division of Nutritional Sciences, University of Illinois, Urbana, IL 61801 USA
| | - Johan S Osorio
- Mammalian NutriPhysioGenomics, Department of Animal Sciences and Division of Nutritional Sciences, University of Illinois, Urbana, IL 61801 USA.,Dairy and Food Science Department, South Dakota State University, 1111 College Ave, 113H Alfred DairyScience Hall, Brookings, SD 57007 USA
| | - Erminio Trevisi
- Istituto di Zootecnica Facoltà di Scienze Agrarie, Alimentari e Ambientali, Università Cattolica del Sacro Cuore, 29122 Piacenza, Italy
| | | | - Juan J Loor
- Mammalian NutriPhysioGenomics, Department of Animal Sciences and Division of Nutritional Sciences, University of Illinois, Urbana, IL 61801 USA
| |
Collapse
|
66
|
Basic Fibroblast Growth Factor Inhibits Apoptosis and Promotes Proliferation of Adipose-Derived Mesenchymal Stromal Cells Isolated from Patients with Type 2 Diabetes by Reducing Cellular Oxidative Stress. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:3027109. [PMID: 28168007 PMCID: PMC5267085 DOI: 10.1155/2017/3027109] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Accepted: 12/15/2016] [Indexed: 01/09/2023]
Abstract
Type 2 diabetes (T2D) is a chronic metabolic disorder affecting increasing number of people in developed countries. Therefore new strategies for treatment of T2D and its complications are of special interest. Nowadays, cellular therapies involving mesenchymal stromal cells that reside in adipose tissue (ASCs) constitute a promising approach; however, there are still many obstacles concerning safety and effectiveness that need to be overcome before ASCs could be engaged for the treatment of diabetes mellitus. One of the challenges is preventing ASCs from deterioration caused by elevated oxidative stress present in diabetes milieu. In the current study we investigated the effect of basic fibroblast growth factor (bFGF) treatment on ASCs isolated from patients with diagnosed T2D. We demonstrate here that cell exposition to bFGF in 5 and 10 ng/mL dosages results in improved morphology, increased proliferative activity, reduced cellular senescence and apoptosis, and decreased oxidative stress, indicating recovery of ASCs' function impaired by T2D. Therefore our results provide a support for bFGF as a potential therapeutic agent for improving stem cell-based approaches for the treatment of diabetes mellitus and its complications.
Collapse
|
67
|
Raghuraman S, Donkin I, Versteyhe S, Barrès R, Simar D. The Emerging Role of Epigenetics in Inflammation and Immunometabolism. Trends Endocrinol Metab 2016; 27:782-795. [PMID: 27444065 DOI: 10.1016/j.tem.2016.06.008] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 06/15/2016] [Accepted: 06/20/2016] [Indexed: 12/12/2022]
Abstract
Recent research developments have shed light on the risk factors contributing to metabolic complications, implicating both genetic and environmental factors, potentially integrated by epigenetic mechanisms. Distinct epigenetic changes in immune cells are frequently observed in obesity and type 2 diabetes mellitus, and these are associated with alterations in the phenotype, function, and trafficking patterns of these cells. The first step in the development of effective therapeutic strategies is the identification of distinct epigenetic signatures associated with metabolic disorders. In this review we provide an overview of the epigenetic mechanisms influencing immune cell phenotype and function, summarize current knowledge about epigenetic changes affecting immune functions in the context of metabolic diseases, and discuss the therapeutic options currently available to counteract epigenetically driven metabolic complications.
Collapse
Affiliation(s)
- Sukanya Raghuraman
- Inflammation and Infection Research, School of Medical Sciences, University of New South Wales, Sydney, Australia
| | - Ida Donkin
- The Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Soetkin Versteyhe
- The Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Romain Barrès
- Inflammation and Infection Research, School of Medical Sciences, University of New South Wales, Sydney, Australia; The Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - David Simar
- Inflammation and Infection Research, School of Medical Sciences, University of New South Wales, Sydney, Australia; The Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
| |
Collapse
|
68
|
Xu W, Wang F, Yu Z, Xin F. Epigenetics and Cellular Metabolism. GENETICS & EPIGENETICS 2016; 8:43-51. [PMID: 27695375 PMCID: PMC5038610 DOI: 10.4137/geg.s32160] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 07/25/2016] [Accepted: 08/01/2016] [Indexed: 01/03/2023]
Abstract
Living eukaryotic systems evolve delicate cellular mechanisms for responding to various environmental signals. Among them, epigenetic machinery (DNA methylation, histone modifications, microRNAs, etc.) is the hub in transducing external stimuli into transcriptional response. Emerging evidence reveals the concept that epigenetic signatures are essential for the proper maintenance of cellular metabolism. On the other hand, the metabolite, a main environmental input, can also influence the processing of epigenetic memory. Here, we summarize the recent research progress in the epigenetic regulation of cellular metabolism and discuss how the dysfunction of epigenetic machineries influences the development of metabolic disorders such as diabetes and obesity; then, we focus on discussing the notion that manipulating metabolites, the fuel of cell metabolism, can function as a strategy for interfering epigenetic machinery and its related disease progression as well.
Collapse
Affiliation(s)
- Wenyi Xu
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Fengzhong Wang
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Zhongsheng Yu
- Department of Biochemistry and Biophysics, University of California, San Francisco, San Francisco, CA, USA
| | - Fengjiao Xin
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| |
Collapse
|
69
|
Marycz K, Kornicka K, Marędziak M, Golonka P, Nicpoń J. Equine metabolic syndrome impairs adipose stem cells osteogenic differentiation by predominance of autophagy over selective mitophagy. J Cell Mol Med 2016; 20:2384-2404. [PMID: 27629697 PMCID: PMC5134411 DOI: 10.1111/jcmm.12932] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Accepted: 05/28/2016] [Indexed: 12/12/2022] Open
Abstract
Adipose‐derived mesenchymal stem cells (ASC) hold great promise in the treatment of many disorders including musculoskeletal system, cardiovascular and/or endocrine diseases. However, the cytophysiological condition of cells, used for engraftment seems to be fundamental factor that might determine the effectiveness of clinical therapy. In this study we investigated growth kinetics, senescence, accumulation of oxidative stress factors, mitochondrial biogenesis, autophagy and osteogenic differentiation potential of ASC isolated from horses suffered from equine metabolic syndrome (EMS). We demonstrated that EMS condition impairs multipotency/pluripotency in ASCs causes accumulation of reactive oxygen species and mitochondria deterioration. We found that, cytochrome c is released from mitochondria to the cytoplasm suggesting activation of intrinsic apoptotic pathway in those cells. Moreover, we observed up‐regulation of p21 and decreased ratio of Bcl‐2/BAX. Deteriorations in mitochondria structure caused alternations in osteogenic differentiation of ASCEMS resulting in their decreased proliferation rate and reduced expression of osteogenic markers BMP‐2 and collagen type I. During osteogenic differentiation of ASCEMS, we observed autophagic turnover as probably, an alternative way to generate adenosine triphosphate and amino acids required to increased protein synthesis during differentiation. Downregulation of PGC1α, PARKIN and PDK4 in differentiated ASCEMS confirmed impairments in mitochondrial biogenesis and function. Hence, application of ASCEMS into endocrinological or ortophedical practice requires further investigation and analysis in the context of safeness of their application.
Collapse
Affiliation(s)
- Krzysztof Marycz
- Electron Microscopy Laboratory, The Faculty of Biology and Animal Science, University of Environmental and Life Sciences Wroclaw, Wroclaw, Poland.,Wroclaw Research Centre EIT+, Wrocław, Poland
| | - Katarzyna Kornicka
- Electron Microscopy Laboratory, The Faculty of Biology and Animal Science, University of Environmental and Life Sciences Wroclaw, Wroclaw, Poland.,Wroclaw Research Centre EIT+, Wrocław, Poland
| | - Monika Marędziak
- Department of Animal Physiology and Biostructure, Faculty of Veterinary Medicine, University of Environmental and Life Sciences Wroclaw, Wroclaw, Poland
| | | | - Jakub Nicpoń
- Department of Surgery, Faculty of Veterinary Medicine, University of Environmental and Life Sciences Wroclaw, Wroclaw, Poland
| |
Collapse
|
70
|
Abstract
Epigenetic changes are caused by biochemical regulators of gene expression that can be transferred across generations or through cell division. Epigenetic modifications can arise from a variety of environmental exposures including undernutrition, obesity, physical activity, stress and toxins. Transient epigenetic changes across the entire genome can influence metabolic outcomes and might or might not be heritable. These modifications direct and maintain the cell-type specific gene expression state. Transient epigenetic changes can be driven by DNA methylation and histone modification in response to environmental stressors. A detailed understanding of the epigenetic signatures of insulin resistance and the adaptive response to exercise might identify new therapeutic targets that can be further developed to improve insulin sensitivity and prevent obesity. This Review focuses on the current understanding of mechanisms by which lifestyle factors affect the epigenetic landscape in type 2 diabetes mellitus and obesity. Evidence from the past few years about the potential mechanisms by which diet and exercise affect the epigenome over several generations is discussed.
Collapse
Affiliation(s)
- Romain Barrès
- The Novo Nordisk Foundation Center for Basic Metabolic Research, Section of Integrative Physiology, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, Copenhagen 2200, Denmark
| | - Juleen R Zierath
- The Novo Nordisk Foundation Center for Basic Metabolic Research, Section of Integrative Physiology, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, Copenhagen 2200, Denmark
- Department of Molecular Medicine and Department of Physiology and Pharmacology, Section of Integrative Physiology, Karolinska Institutet, von Eulers väg 4a, SE 171 77 Stockholm, Sweden
| |
Collapse
|
71
|
Reichetzeder C, Dwi Putra SE, Pfab T, Slowinski T, Neuber C, Kleuser B, Hocher B. Increased global placental DNA methylation levels are associated with gestational diabetes. Clin Epigenetics 2016; 8:82. [PMID: 27462376 PMCID: PMC4960714 DOI: 10.1186/s13148-016-0247-9] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Accepted: 07/11/2016] [Indexed: 01/29/2023] Open
Abstract
BACKGROUND Gestational diabetes mellitus (GDM) is associated with adverse pregnancy outcomes. It is known that GDM is associated with an altered placental function and changes in placental gene regulation. More recent studies demonstrated an involvement of epigenetic mechanisms. So far, the focus regarding placental epigenetic changes in GDM was set on gene-specific DNA methylation analyses. Studies that robustly investigated placental global DNA methylation are lacking. However, several studies showed that tissue-specific alterations in global DNA methylation are independently associated with type 2 diabetes. Thus, the aim of this study was to characterize global placental DNA methylation by robustly measuring placental DNA 5-methylcytosine (5mC) content and to examine whether differences in placental global DNA methylation are associated with GDM. METHODS Global DNA methylation was quantified by the current gold standard method, LC-MS/MS. In total, 1030 placental samples were analyzed in this single-center birth cohort study. RESULTS Mothers with GDM displayed a significantly increased global placental DNA methylation (3.22 ± 0.63 vs. 3.00 ± 0.46 %; p = 0.013; ±SD). Bivariate logistic regression showed a highly significant positive correlation between global placental DNA methylation and the presence of GDM (p = 0.0009). Quintile stratification according to placental DNA 5mC levels revealed that the frequency of GDM was evenly distributed in quintiles 1-4 (2.9-5.3 %), whereas the frequency in the fifth quintile was significantly higher (10.7 %; p = 0.003). Bivariate logistic models adjusted for maternal age, BMI, ethnicity, recurrent miscarriages, and familiar diabetes predisposition clearly demonstrated an independent association between global placental DNA hypermethylation and GDM. Furthermore, an ANCOVA model considering known predictors of DNA methylation substantiated an independent association between GDM and placental DNA methylation. CONCLUSIONS This is the first study that employed a robust quantitative assessment of placental global DNA methylation in over a thousand placental samples. The study provides large scale evidence that placental global DNA hypermethylation is associated with GDM, independent of established risk factors.
Collapse
Affiliation(s)
- C. Reichetzeder
- Department of Toxicology, Institute of Nutritional Science, University of Potsdam, Nuthetal, Germany
- Center for Cardiovascular Research (CCR), Campus Charité Mitte, University Hospital Charité, Berlin, Germany
| | - S. E. Dwi Putra
- Department of Experimental Nutritional Medicine, Institute of Nutritional Science, University of Potsdam, Arthur-Scheunert-Allee 114-116, Nuthetal, Potsdam 14558 Germany
- Faculty of Biotechnology, University of Surabaya, Surabaya, Indonesia
| | - T. Pfab
- Center for Cardiovascular Research (CCR), Campus Charité Mitte, University Hospital Charité, Berlin, Germany
- Diaverum Deutschland, Potsdam, Germany
| | - T. Slowinski
- Department of Nephrology, Campus Charité Mitte, University Hospital Charité, Berlin, Germany
| | - C. Neuber
- Department of Toxicology, Institute of Nutritional Science, University of Potsdam, Nuthetal, Germany
| | - B. Kleuser
- Department of Toxicology, Institute of Nutritional Science, University of Potsdam, Nuthetal, Germany
| | - B. Hocher
- Department of Experimental Nutritional Medicine, Institute of Nutritional Science, University of Potsdam, Arthur-Scheunert-Allee 114-116, Nuthetal, Potsdam 14558 Germany
- Institut für Laboratoriumsmedizin, Berlin, Germany
- Department of Basic Medicine, Medical College of Hunan Normal University, Changsha, China
| |
Collapse
|
72
|
Muka T, Nano J, Voortman T, Braun KVE, Ligthart S, Stranges S, Bramer WM, Troup J, Chowdhury R, Dehghan A, Franco OH. The role of global and regional DNA methylation and histone modifications in glycemic traits and type 2 diabetes: A systematic review. Nutr Metab Cardiovasc Dis 2016; 26:553-566. [PMID: 27146363 DOI: 10.1016/j.numecd.2016.04.002] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 04/04/2016] [Accepted: 04/04/2016] [Indexed: 02/08/2023]
Abstract
BACKGROUND New evidence suggests the potential involvement of epigenetic mechanisms in type 2 diabetes (T2D) as a crucial interface between the effects of genetic predisposition and environmental influences. AIM To systematically review studies investigating the association between epigenetic marks (DNA methylation and histone modifications) with T2D and glycemic traits (glucose and insulin levels, insulin resistance measured by HOMA-IR). METHOD AND RESULTS Six bibliographic databases (Embase.com, Medline (Ovid), Web-of-Science, PubMed, Cochrane Central and Google Scholar) were screened until 28th August 2015. We included randomized controlled trials, cohort, case-control and cross-sectional studies in humans that examined the association between epigenetic marks (global, candidate or genome-wide methylation of DNA and histone modifications) with T2D, glucose and insulin levels and insulin metabolism. Of the initially identified 3879 references, 53 articles, based on 47 unique studies met our inclusion criteria. Overall, data were available on 10,823 participants, with a total of 3358 T2D cases. There was no consistent evidence for an association between global DNA-methylation with T2D, glucose, insulin and insulin resistance. The studies reported epigenetic regulation of several candidate genes for diabetes susceptibility in blood cells, muscle, adipose tissue and placenta to be related with T2D without any general overlap between them. Histone modifications in relation to T2D were reported only in 3 observational studies. CONCLUSIONS AND RELEVANCE Current evidence supports an association between epigenetic marks and T2D. However, overall evidence is limited, highlighting the need for further larger-scale and prospective investigations to establish whether epigenetic marks may influence the risk of developing T2D.
Collapse
Affiliation(s)
- T Muka
- Department of Epidemiology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands; Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, USA.
| | - J Nano
- Department of Epidemiology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - T Voortman
- Department of Epidemiology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands; Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - K V E Braun
- Department of Epidemiology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - S Ligthart
- Department of Epidemiology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - S Stranges
- Department of Population Health, Luxembourg Institute of Health, Luxembourg
| | - W M Bramer
- Medical Library, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - J Troup
- Research and Development, Metagenics, Inc, USA
| | - R Chowdhury
- Department of Public Health & Primary Care, Cardiovascular Epidemiology Unit, University of Cambridge, Cambridge, CB1 8RN, United Kingdom
| | - A Dehghan
- Department of Epidemiology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - O H Franco
- Department of Epidemiology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| |
Collapse
|
73
|
The role of epigenetic modifications in cardiovascular disease: A systematic review. Int J Cardiol 2016; 212:174-83. [DOI: 10.1016/j.ijcard.2016.03.062] [Citation(s) in RCA: 121] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 03/14/2016] [Accepted: 03/16/2016] [Indexed: 01/11/2023]
|
74
|
Carraro JCC, Mansego ML, Milagro FI, Chaves LO, Vidigal FC, Bressan J, Martínez JA. LINE-1 and inflammatory gene methylation levels are early biomarkers of metabolic changes: association with adiposity. Biomarkers 2016; 21:625-32. [DOI: 10.3109/1354750x.2016.1171904] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
| | - Maria Luisa Mansego
- Department of Nutrition, Food Science and Physiology, Centre for Nutrition Research, University of Navarra, CIBERobn, Fisiopatología De La Obesidad Y La Nutrición, Institute of Health Carlos III, Pamplona, Madrid, Spain
| | - Fermin Ignacio Milagro
- Department of Nutrition, Food Science and Physiology, Centre for Nutrition Research, University of Navarra, CIBERobn, Fisiopatología De La Obesidad Y La Nutrición, Institute of Health Carlos III, Pamplona, Madrid, Spain
| | - Larissa Oliveira Chaves
- Department of Nutrition and Health, Universidade Federal De Viçosa, Viçosa, Minas Gerais, Brazil
| | | | - Josefina Bressan
- Department of Nutrition and Health, Universidade Federal De Viçosa, Viçosa, Minas Gerais, Brazil
| | - J. Alfredo Martínez
- Department of Nutrition, Food Science and Physiology, Centre for Nutrition Research, University of Navarra, CIBERobn, Fisiopatología De La Obesidad Y La Nutrición, Institute of Health Carlos III, Pamplona, Madrid, Spain
| |
Collapse
|
75
|
Jiang X, Greenwald E, Jack-Roberts C. Effects of Choline on DNA Methylation and Macronutrient Metabolic Gene Expression in In Vitro Models of Hyperglycemia. Nutr Metab Insights 2016; 9:11-7. [PMID: 27081315 PMCID: PMC4825771 DOI: 10.4137/nmi.s29465] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 02/28/2016] [Accepted: 03/04/2016] [Indexed: 12/20/2022] Open
Abstract
Choline is an essential nutrient that plays an important role in lipid metabolism and DNA methylation. Studies in rodents suggest that choline may adversely affect glycemic control, yet studies in humans are lacking. Using the human hepatic and placental cells, HepG2 and BeWo, respectively, we examined the interaction between choline and glucose treatments. In HepG2 cells, choline supplementation (1 mM) increased global DNA methylation and DNA methyltransferase expression in both low-glucose (5 mM) and high-glucose (35 mM) conditions. Choline supplementation increased the expression of peroxisomal acyl-coenzyme A oxidase 1 (ACOX1), which mediates fatty acid β-oxidation, especially in the high-glucose condition. High-glucose exposure increased the transcription of the gluconeogenic gene phosphoenolpyruvate carboxykinase (PEPCK), while choline supplementation mitigated such increase. Compared to HepG2 cells, the placenta-derived BeWo cells were relatively unresponsive to either high-glucose or -choline treatment. In conclusion, choline and glucose interacted to affect macronutrient metabolic genes, yet there was no indication that choline may worsen glycemic control in these in vitro human cell culture models.
Collapse
Affiliation(s)
- Xinyin Jiang
- Department of Health and Nutrition Sciences, Brooklyn College, Brooklyn, NY, USA
| | - Esther Greenwald
- Department of Health and Nutrition Sciences, Brooklyn College, Brooklyn, NY, USA
| | | |
Collapse
|
76
|
Berezin A. Metabolic memory phenomenon in diabetes mellitus: Achieving and perspectives. Diabetes Metab Syndr 2016; 10:S176-S183. [PMID: 27025794 DOI: 10.1016/j.dsx.2016.03.016] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Accepted: 03/05/2016] [Indexed: 12/20/2022]
Abstract
Diabetes mellitus (DM) exhibits raised prevalence worldwide. There is a large body of evidence regarding the incidence of DM closely associates with cardiovascular (CV) complications. In this context, hyperglycaemia, oxidant stress, and inflammation are key factors that contribute in CV events and disease in type1 and type 2 DM, even when metabolic control was optimal and/or intensive glycemic control was implemented. It has been suggested that the effect of poor metabolic control or even transient episodes of hyperglycemia in DM associates in particularly with worsening ability of endogenous vasoreparative systems that are mediated epigenetic changes in several cells (progenitor cells, stem cells, mononuclears, immune cells), and thereby lead to so called "vascular glycemic memory" or "metabolic memory". Both terms are emphasized the fact that prior glucose control has sustained effects that persist even after return to more usual glycemic control. The mechanisms underlying the cellular "metabolic memory" induced by high glucose remain unclear. The review is discussed pathophysiology and clinical relevance of "metabolic" memory phenomenon in DM. The role of oxidative stress, inflammation, and epigenetics in DM and its vascular complications are highlighted. The effects of several therapeutic approaches are discussed.
Collapse
Affiliation(s)
- Alexander Berezin
- Internal Medicine Department, State Medical University of Zaporozhye, 26, Mayakovsky Av., Zaporozhye 69035, Ukraine.
| |
Collapse
|
77
|
Association of in vitro fertilization with global and IGF2/H19 methylation variation in newborn twins. J Dev Orig Health Dis 2016; 6:115-24. [PMID: 25857739 DOI: 10.1017/s2040174415000161] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
In vitro fertilization (IVF) and its subset intracytoplasmic sperm injection (ICSI), are widely used medical treatments for conception. There has been controversy over whether IVF is associated with adverse short- and long-term health outcomes of offspring. As with other prenatal factors, epigenetic change is thought to be a molecular mediator of any in utero programming effects. Most studies focused on DNA methylation at gene-specific and genomic level, with only a few on associations between DNA methylation and IVF. Using buccal epithelium from 208 twin pairs from the Peri/Postnatal Epigenetic Twin Study (PETS), we investigated associations between IVF and DNA methylation on a global level, using the proxies of Alu and LINE-1 interspersed repeats in addition to two locus-specific regulatory regions within IGF2/H19, controlling for 13 potentially confounding factors. Using multiple correction testing, we found strong evidence that IVF-conceived twins have lower DNA methylation in Alu, and weak evidence of lower methylation in one of the two IGF2/H19 regulatory regions and LINE-1, compared with naturally conceived twins. Weak evidence of a relationship between ICSI and DNA methylation within IGF2/H19 regulatory region was found, suggesting that one or more of the processes associated with IVF/ICSI may contribute to these methylation differences. Lower within- and between-pair DNA methylation variation was also found in IVF-conceived twins for LINE-1, Alu and one IGF2/H19 regulatory region. Although larger sample sizes are needed, our results provide additional insight to the possible influence of IVF and ICSI on DNA methylation. To our knowledge, this is the largest study to date investigating the association of IVF and DNA methylation.
Collapse
|
78
|
Yamazaki M, Munetsuna E, Yamada H, Ando Y, Mizuno G, Murase Y, Kondo K, Ishikawa H, Teradaira R, Suzuki K, Ohashi K. Fructose consumption induces hypomethylation of hepatic mitochondrial DNA in rats. Life Sci 2016; 149:146-52. [PMID: 26869391 DOI: 10.1016/j.lfs.2016.02.020] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 12/11/2015] [Accepted: 02/06/2016] [Indexed: 10/22/2022]
Abstract
AIMS Fructose may play a crucial role in the pathogenesis of metabolic syndrome (MetS). However, the pathogenic mechanism of the fructose-induced MetS has not yet been investigated fully. Recently, several reports have investigated the association between mitochondrial DNA (mtDNA) and MetS. We examined the effect of fructose-rich diets on mtDNA content, transcription, and epigenetic changes. MAIN METHODS Four-week-old male Sprague-Dawley rats were offered a 20% fructose solution for 14weeks. We quantified mRNAs for hepatic mitochondrial genes and analyzed the mtDNA methylation (5-mC and 5-hmC) levels using ELISA kits. KEY FINDINGS Histological analysis revealed non-alcoholic fatty liver disease (NAFLD) in fructose-fed rats. Hepatic mtDNA content and transcription were higher in fructose-fed rats than in the control group. Global hypomethylation of mtDNA was also observed in fructose-fed rats. SIGNIFICANCE We showed that fructose consumption stimulates hepatic mtDNA-encoded gene expression. This phenomenon might be due to epigenetic changes in mtDNA. Fructose-induced mitochondrial epigenetic changes appear to be a novel mechanism underlying the pathology of MetS and NAFLD.
Collapse
Affiliation(s)
- Mirai Yamazaki
- Department of Clinical Biochemistry, Fujita Health University School of Health Sciences, Toyoake, Japan
| | - Eiji Munetsuna
- Department of Biochemistry, Fujita Health University School of Medicine, Toyoake, Japan
| | - Hiroya Yamada
- Department of Hygiene, Fujita Health University School of Medicine, Toyoake, Japan.
| | - Yoshitaka Ando
- Department of Joint Research Laboratory of Clinical Medicine, Fujita Health University School of Medicine, Toyoake, Japan
| | - Genki Mizuno
- Department of Clinical Biochemistry, Fujita Health University School of Health Sciences, Toyoake, Japan
| | - Yuri Murase
- Department of Clinical Biochemistry, Fujita Health University School of Health Sciences, Toyoake, Japan
| | - Kanako Kondo
- Department of Clinical Biochemistry, Fujita Health University School of Health Sciences, Toyoake, Japan
| | - Hiroaki Ishikawa
- Department of Clinical Biochemistry, Fujita Health University School of Health Sciences, Toyoake, Japan
| | - Ryoji Teradaira
- Department of Clinical Biochemistry, Fujita Health University School of Health Sciences, Toyoake, Japan
| | - Koji Suzuki
- Department of Public Health, Fujita Health University School of Health Sciences, Toyoake, Japan
| | - Koji Ohashi
- Department of Clinical Biochemistry, Fujita Health University School of Health Sciences, Toyoake, Japan.
| |
Collapse
|
79
|
Li J, Li S, Hu Y, Cao G, Wang S, Rai P, Wang X, Sun K. The Expression Level of mRNA, Protein, and DNA Methylation Status of FOSL2 of Uyghur in XinJiang in Type 2 Diabetes. J Diabetes Res 2016; 2016:5957404. [PMID: 28050569 PMCID: PMC5168477 DOI: 10.1155/2016/5957404] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 10/25/2016] [Accepted: 11/10/2016] [Indexed: 11/17/2022] Open
Abstract
Objective. We investigated the expression levels of both FOSL2 mRNA and protein as well as evaluating DNA methylation in the blood of type 2 diabetes mellitus (T2DM) Uyghur patients from Xinjiang. This study also evaluated whether FOSL2 gene expression had demonstrated any associations with clinical and biochemical indicators of T2DM. Methods. One hundred Uyghur subjects where divided into two groups, T2DM and nonimpaired glucose tolerance (NGT) groups. DNA methylation of FOSL2 was also analyzed by MassARRAY Spectrometry and methylation data of individual units were generated by the EpiTyper v1.0.5 software. The expression levels of FOS-like antigen 2 (FOSL2) and the protein expression levels were analyzed. Results. Significant differences were observed in mRNA and protein levels when compared with the NGT group, while methylation rates of eight CpG units within the FOSL2 gene were higher in the T2DM group. Methylation of CpG sites was found to inversely correlate with expression of other markers. Conclusions. Results show that a correlation between mRNA, protein, and DNA methylation of FOSL2 gene exists among T2DM patients from Uyghur. FOSL2 protein and mRNA were downregulated and the DNA became hypermethylated, all of which may be involved in T2DM pathogenesis in this population.
Collapse
Affiliation(s)
- Jun Li
- Department of Endocrinology and Metabolism, The First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang 832002, China
- *Jun Li: and
| | - Siyuan Li
- Medical College, Shihezi University, Shihezi 832002, China
| | - Ying Hu
- Department of Endocrinology and Metabolism, The First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang 832002, China
| | - Guolei Cao
- Department of Endocrinology and Metabolism, The First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang 832002, China
- The First Department of General Medicine, The Affiliated Tumor Hospital of Xinjiang Medical University, Urumqi, Xinjiang 830000, China
| | - Siyao Wang
- Department of Endocrinology and Metabolism, The First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang 832002, China
- Department of Endocrinology and Metabolism, The Fifth Affiliated Hospital, Xinjiang Medicine University, Urumqi, Xinjiang 830000, China
| | - Partab Rai
- Medical College, Shihezi University, Shihezi 832002, China
| | - Xiaoli Wang
- Department of Endocrinology and Metabolism, The First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang 832002, China
| | - Kan Sun
- Department of Endocrinology and Metabolism, The First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang 832002, China
- *Kan Sun:
| |
Collapse
|
80
|
Matsha TE, Pheiffer C, Mutize T, Erasmus RT, Kengne AP. Glucose Tolerance, MTHFR C677T and NOS3 G894T Polymorphisms, and Global DNA Methylation in Mixed Ancestry African Individuals. J Diabetes Res 2016; 2016:8738072. [PMID: 27990443 PMCID: PMC5136398 DOI: 10.1155/2016/8738072] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Revised: 07/21/2016] [Accepted: 08/14/2016] [Indexed: 11/17/2022] Open
Abstract
The aim of this study is to quantify global DNA methylation and investigate the relationship with diabetes status and polymorphisms in MTHFR C677T and NOS3 G894T genes in mixed ancestry subjects from South Africa. Global DNA methylation was measured, and MTHFR rs1801133 and NOS3 rs1799983 polymorphisms were genotyped using high throughput real-time polymerase chain reaction and direct DNA sequencing. Of the 564 participants, 158 (28%) individuals had T2DM of which 97 (17.2%) were screen-detected cases. Another 119 (21.1%) had prediabetes, that is, impaired fasting glucose, impaired glucose tolerance, or the combination of both, and the remainder 287 (50.9%) had normal glucose tolerance. Global DNA methylation was significantly higher in prediabetes and screen-detected diabetes than in normal glucose tolerance (both p ≤ 0.033) and in screen-detected diabetes compared to known diabetes on treatment (p = 0.019). There was no difference in global DNA methylation between known diabetes on treatment and normal glucose tolerance (p > 0.999). In multivariable linear regression analysis, only NOS3 was associated with increasing global DNA methylation (β = 0.943; 95% CI: 0.286 to 1.560). The association of global DNA methylation with screen-detected diabetes but not treated diabetes suggests that glucose control agents to some extent may be reversing DNA methylation. The association between NOS3 rs1799983 polymorphisms and DNA methylation suggests gene-epigenetic mechanisms through which vascular diabetes complications develop despite adequate metabolic control.
Collapse
Affiliation(s)
- Tandi E. Matsha
- Department of Biomedical Sciences, Faculty of Health and Wellness Sciences, Cape Peninsula University of Technology, Cape Town, South Africa
- *Tandi E. Matsha: and
| | - Carmen Pheiffer
- Biomedical Research and Innovation Platform, South African Medical Research Council, Cape Town, South Africa
- *Carmen Pheiffer:
| | - Tinashe Mutize
- Department of Biomedical Sciences, Faculty of Health and Wellness Sciences, Cape Peninsula University of Technology, Cape Town, South Africa
| | - Rajiv T. Erasmus
- Division of Chemical Pathology, Faculty of Medicine and Health Sciences, National Health Laboratory Service (NHLS) and University of Stellenbosch, Cape Town, South Africa
| | - Andre P. Kengne
- Non-Communicable Diseases Research Unit, South African Medical Research Council, Cape Town, South Africa
- Department of Medicine, University of Cape Town, Cape Town, South Africa
| |
Collapse
|
81
|
Sessions-Bresnahan DR, Schauer KL, Heuberger AL, Carnevale EM. Effect of Obesity on the Preovulatory Follicle and Lipid Fingerprint of Equine Oocytes. Biol Reprod 2015; 94:15. [PMID: 26632608 DOI: 10.1095/biolreprod.115.130187] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Accepted: 11/25/2015] [Indexed: 12/14/2022] Open
Abstract
Obesity is associated with disrupted reproductive cycles in mares, but the impact of obesity on follicles and oocytes has received minimal attention. We investigated the impact of obesity on 1) expression of selected genes in follicle cells for carbohydrate metabolism, inflammatory cytokines, lipid homeostasis, endoplasmic reticulum stress, and mitochondrial function; 2) follicular fluid content of metabolic hormones and metabolites; and 3) lipid fingerprint of oocytes. Mares (9-13 yr) were classified as control (n = 8, normal weight, body condition score [BCS] 5.1, 10.4% body fat) or obese (n = 9, BCS 7.9, 16.2% body fat). Gene expression from granulosa cells (GC) and cumulus cells (CC) was evaluated by RT-PCR. Serum and follicular fluid were evaluated for insulin, leptin, adiponectin, and metabolite profiling. Oocyte lipid fingerprints were acquired using matrix-assisted laser desorption/ionization mass spectrometry. Several genes for lipid homeostasis, endoplasmic reticulum stress, and mitochondrial function were different between groups in GC and CC. Obese had (P < 0.05) or tended to have (0.05 < P < 0.1) lower insulin sensitivity and higher insulin and leptin in serum and follicular fluid. Many metabolites differed between control and obese in serum and/or follicular fluid and correlated with BCS and/or insulin sensitivity. Oocytes from control had greater concentrations of lipids consistent with phosphatidylcholines, phosphatidylethanolamines, and sphingomyelins, while lipids consistent with triglycerides tended to be higher in obese. These findings suggest that maternal obesity causes alterations in the follicle and oocyte; the extent to which these alterations impact the conceptus and offspring is still to be determined.
Collapse
Affiliation(s)
- Dawn R Sessions-Bresnahan
- Department of Animal Science, Berry College, Mount Berry, Georgia Biomedical Sciences, Colorado State University, Fort Collins, Colorado
| | - Kevin L Schauer
- Marine Biology and Ecology, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, Florida Proteomics and Metabolomics Facility, Colorado State University, Fort Collins, Colorado
| | - Adam L Heuberger
- Proteomics and Metabolomics Facility, Colorado State University, Fort Collins, Colorado Horticulture and Landscape Architecture, Colorado State University, Fort Collins, Colorado
| | | |
Collapse
|
82
|
Burghardt KJ, Goodrich JM, Dolinoy DC, Ellingrod VL. DNA methylation, insulin resistance and second-generation antipsychotics in bipolar disorder. Epigenomics 2015; 7:343-52. [PMID: 26077424 DOI: 10.2217/epi.15.5] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
AIMS This study aimed to assess the effect of second-generation antipsychotic (SGA) use and insulin resistance on a global measure of DNA methylation in patients diagnosed with bipolar disorder. MATERIALS & METHODS Subjects stable on medication (either mood stabilizer monotherapy or adjuvant SGAs) were assessed for insulin resistance. Global methylation levels were assessed in leukocyte DNA from whole blood using the Luminometric Methylation Assay. Multivariable linear regression was used to investigate the effect of insulin resistance and SGA use on DNA methylation. RESULTS A total of 115 bipolar I subjects were included in this study. The average age was 43.1 ±12.2 years and 73% were on SGAs. Average% global methylation was 77.0 ± 3.26 and was significantly influenced by insulin resistance, SGA use and smoking. CONCLUSION This is the first study to show a relationship between SGA use, insulin resistance and global DNA methylation. Further work will be needed to identify tissue- and gene-specific methylation changes.
Collapse
Affiliation(s)
- Kyle J Burghardt
- Department of Pharmacy Practice, Wayne State University Eugene Applebaum College of Pharmacy & Health Sciences, 259 Mack Avenue, Suite 2190, Detroit, MI 48201, USA
| | - Jacyln M Goodrich
- Department of Environmental Sciences, University of Michigan School of Public Health, 6638 SPH Tower, 1415 Washington Heights, Ann Arbor, MI 48109, USA
| | - Dana C Dolinoy
- Department of Environmental Sciences, University of Michigan School of Public Health, 6638 SPH Tower, 1415 Washington Heights, Ann Arbor, MI 48109, USA
| | - Vicki L Ellingrod
- Department of Clinical Social & Administrative Sciences, College of Pharmacy, University of Michigan, 428 Church Street, Ann Arbor, MI 48109, USA.,Department of Psychiatry, School of Medicine, University of Michigan, 1301 Catherine, Ann Arbor, MI 48109, USA
| |
Collapse
|
83
|
Zhao J, An Q, Goldberg J, Quyyumi AA, Vaccarino V. Promoter methylation of glucocorticoid receptor gene is associated with subclinical atherosclerosis: A monozygotic twin study. Atherosclerosis 2015; 242:71-6. [PMID: 26186654 PMCID: PMC4546896 DOI: 10.1016/j.atherosclerosis.2015.07.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 06/25/2015] [Accepted: 07/02/2015] [Indexed: 01/18/2023]
Abstract
OBJECTIVE Endothelial dysfunction assessed by brachial artery flow-mediated dilation (FMD) is a marker of early atherosclerosis. Glucocorticoid receptor gene (NR3C1) regulates many biological processes, including stress response, behavioral, cardiometabolic and immunologic functions. Genetic variants in NR3C1 have been associated with atherosclerosis and related risk factors. This study investigated the association of NR3C1 promoter methylation with FMD, independent of genetic and family-level environmental factors. METHODS We studied 84 middle-aged, male-male monozygotic twin pairs recruited from the Vietnam Era Twin Registry. Brachial artery FMD was measured by ultrasound. DNA methylation levels at 22 CpG residues in the NR3C1 exon 1F promoter region were quantified by bisulfite pyrosequencing in genomic DNA isolated from peripheral blood leukocytes. Co-twin control analyses were conducted to examine the association of methylation variation with FMD, adjusting for smoking, physical activity, body mass index, lipids, blood pressure, fasting glucose, and depressive symptoms. Multiple testing was corrected using the false discovery rate. RESULTS Mean methylation level across the 22 studied CpG sites was 2.02%. Methylation alterations at 12 out of the 22 CpG residues were significantly associated with FMD. On average, a 1% increase in the intra-pair difference in mean DNA methylation was associated with 2.83% increase in the intra-pair difference in FMD (95% CI: 1.46-4.20; P < 0.0001) after adjusting for risk factors and multiple testing. CONCLUSION Methylation variation in NR3C1 exon 1F promoter significantly influences subclinical atherosclerosis, independent of genetic, early family environmental and other risk factors.
Collapse
Affiliation(s)
- Jinying Zhao
- Department of Epidemiology, School of Public Health and Tropical Medicine, Tulane University, New Orleans, LA, USA.
| | - Qiang An
- Department of Epidemiology, School of Public Health and Tropical Medicine, Tulane University, New Orleans, LA, USA
| | - Jack Goldberg
- Seattle Epidemiologic Research and Information Center, VA Puget Sound Health Care System, Seattle, WA, USA; Department of Epidemiology, University of Washington, Seattle, WA, USA
| | - Arshed A Quyyumi
- Department of Medicine, School of Medicine, Emory University, Atlanta, GA, USA
| | - Viola Vaccarino
- Department of Medicine, School of Medicine, Emory University, Atlanta, GA, USA; Department of Epidemiology, School of Public Health, Emory University, Atlanta, GA, USA
| |
Collapse
|
84
|
Nicoletti CF, Nonino CB, de Oliveira BAP, Pinhel MADS, Mansego ML, Milagro FI, Zulet MA, Martinez JA. DNA Methylation and Hydroxymethylation Levels in Relation to Two Weight Loss Strategies: Energy-Restricted Diet or Bariatric Surgery. Obes Surg 2015. [DOI: 10.1007/s11695-015-1802-8] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
85
|
Rönn T, Ling C. DNA methylation as a diagnostic and therapeutic target in the battle against Type 2 diabetes. Epigenomics 2015; 7:451-60. [DOI: 10.2217/epi.15.7] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Type 2 diabetes (T2D) develops due to insulin resistance and impaired insulin secretion, predominantly in genetically predisposed subjects exposed to nongenetic risk factors like obesity, physical inactivity and ageing. Emerging data suggest that epigenetics also play a key role in the pathogenesis of T2D. Genome-wide studies have identified altered DNA methylation patterns in pancreatic islets, skeletal muscle and adipose tissue from subjects with T2D compared with nondiabetic controls. Environmental factors known to affect T2D, including obesity, exercise and diet, have also been found to alter the human epigenome. Additionally, ageing and the intrauterine environment are associated with differential DNA methylation. Together, these data highlight a key role for epigenetics and particularly DNA methylation in the growing incidence of T2D.
Collapse
Affiliation(s)
- Tina Rönn
- Epigenetics & Diabetes, Department of Clinical Sciences in Malmö, Lund University Diabetes Centre, Lund University, CRC, Jan Waldenströms gata 35, 205 02 Malmö, Sweden
| | - Charlotte Ling
- Epigenetics & Diabetes, Department of Clinical Sciences in Malmö, Lund University Diabetes Centre, Lund University, CRC, Jan Waldenströms gata 35, 205 02 Malmö, Sweden
| |
Collapse
|
86
|
Delgado-Cruzata L, Zhang W, McDonald JA, Tsai WY, Valdovinos C, Falci L, Wang Q, Crew KD, Santella RM, Hershman DL, Greenlee H. Dietary modifications, weight loss, and changes in metabolic markers affect global DNA methylation in Hispanic, African American, and Afro-Caribbean breast cancer survivors. J Nutr 2015; 145:783-90. [PMID: 25833781 PMCID: PMC4381766 DOI: 10.3945/jn.114.202853] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Accepted: 12/30/2014] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Lower levels of global DNA methylation in tissue and blood have been associated with increased cancer risk. Conversely, cross-sectional analyses of healthier lifestyle patterns have been associated with higher levels of global DNA methylation. OBJECTIVE In this trial, we explored the associations between changes in lifestyle modifications (diet, weight loss), metabolic markers, and global epigenetic biomarkers in white blood cells. METHODS Study participants were Hispanic, African American, and Afro-Caribbean overweight and sedentary female breast cancer survivors (n = 24) who participated in a larger randomized, crossover, pilot study of a 6-mo weight loss intervention and who had available blood specimens. Anthropometric measures, a food-frequency questionnaire, and peripheral blood were collected at baseline, 6 mo, and 12 mo. Plasma samples were analyzed for metabolic markers (insulin, glucose). We measured DNA methylation of long interspersed nucleotide element 1 (LINE-1) and satellite 2 by pyrosequencing and MethyLight, respectively, and global DNA methylation by the luminometric methylation assay (LUMA). RESULTS DNA methylation of LINE-1 was statistically significantly elevated at 6 mo [75.5% vs. 78.5% (P < 0.0001)] and 12 mo [75.5% vs. 77.7% (P < 0.0001)], compared to baseline. Over a 12-mo period, changes in percentage body fat and plasma glucose concentrations were positively associated with LINE-1 DNA methylation (β = 0.19, P = 0.001) and LUMA DNA methylation levels (β = 0.24, P = 0.02), respectively. Similarly, 12-mo changes in dietary measures such as vegetable (β = 0.009, P = 0.048), protein (β = 0.04, P = 0.001), and total caloric (β = 0.05, P = 0.01) intake were positively associated with changes in LUMA DNA methylation, as was intake of fruit positively associated with changes in LINE-1 DNA methylation (β = 0.004, P = 0.02). CONCLUSIONS Our hypothesis-generating results suggest that lifestyle modifications may be associated with changes in global DNA methylation detectable at 6 and 12 mo. These biomarkers may be useful intermediate biomarkers to use in future intervention trials. This trial was registered at clinicaltrials.gov as NCT00811824.
Collapse
Affiliation(s)
- Lissette Delgado-Cruzata
- Departments of Environmental Health Sciences,,Department of Sciences, John Jay College of Criminal Justice, City University of New York, New York, NY
| | | | | | | | | | - Laura Falci
- Epidemiology, Mailman School of Public Health
| | - Qiao Wang
- Departments of Environmental Health Sciences
| | - Katherine D Crew
- Epidemiology, Mailman School of Public Health,,Herbert Irving Comprehensive Cancer Center, and,Department of Medicine, College of Physicians and Surgeons, Columbia University, New York, NY; and
| | - Regina M Santella
- Departments of Environmental Health Sciences,,Herbert Irving Comprehensive Cancer Center, and
| | - Dawn L Hershman
- Epidemiology, Mailman School of Public Health,,Herbert Irving Comprehensive Cancer Center, and,Department of Medicine, College of Physicians and Surgeons, Columbia University, New York, NY; and
| | - Heather Greenlee
- Epidemiology, Mailman School of Public Health, Herbert Irving Comprehensive Cancer Center, and
| |
Collapse
|
87
|
Rerkasem K, Rattanatanyong P, Rerkasem A, Wongthanee A, Rungruengthanakit K, Mangklabruks A, Mutirangura A. Higher Alu methylation levels in catch-up growth in twenty-year-old offsprings. PLoS One 2015; 10:e0120032. [PMID: 25807557 PMCID: PMC4373937 DOI: 10.1371/journal.pone.0120032] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Accepted: 01/31/2015] [Indexed: 11/23/2022] Open
Abstract
Alu elements and long interspersed element-1 (LINE-1 or L1) are two major human intersperse repetitive sequences. Lower Alu methylation, but not LINE-1, has been observed in blood cells of people in old age, and in menopausal women having lower bone mass and osteoporosis. Nevertheless, Alu methylation levels also vary among young individuals. Here, we explored phenotypes at birth that are associated with Alu methylation levels in young people. In 2010, 249 twenty-years-old volunteers whose mothers had participated in a study association between birth weight (BW) and nutrition during pregnancy in 1990, were invited to take part in our present study. In this study, the LINE-1 and Alu methylation levels and patterns were measured in peripheral mononuclear cells and correlated with various nutritional parameters during intrauterine and postnatal period of offspring. This included the amount of maternal intake during pregnancy, the mother’s weight gain during pregnancy, birth weight, birth length, and the rate of weight gain in the first year of life. Catch-up growth (CUG) was defined when weight during the first year was >0.67 of the standard score, according to WHO data. No association with LINE-1 methylation was identified. The mean level of Alu methylation in the CUG group was significantly higher than those non-CUG (39.61% and 33.66 % respectively, P < 0.0001). The positive correlation between the history of CUG in the first year and higher Alu methylation indicates the role of Alu methylation, not only in aging cells, but also in the human growth process. Moreover, here is the first study that demonstrated the association between a phenotype during the newborn period and intersperse repetitive sequences methylation during young adulthood.
Collapse
Affiliation(s)
- Kittipan Rerkasem
- Department of Surgery, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; The Research Institute for Health Sciences, Chiang Mai University, Chiang Mai, Thailand
| | - Prakasit Rattanatanyong
- Center of Excellence of Molecular Genetics of Cancer and Human Diseases, Department of Anatomy, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Amaraporn Rerkasem
- Department of Surgery, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Antika Wongthanee
- The Research Institute for Health Sciences, Chiang Mai University, Chiang Mai, Thailand
| | | | - Ampica Mangklabruks
- The Research Institute for Health Sciences, Chiang Mai University, Chiang Mai, Thailand; Department of Internal Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Apiwat Mutirangura
- Center of Excellence of Molecular Genetics of Cancer and Human Diseases, Department of Anatomy, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| |
Collapse
|
88
|
Enquobahrie DA, Moore A, Muhie S, Tadesse MG, Lin S, Williams MA. Early Pregnancy Maternal Blood DNA Methylation in Repeat Pregnancies and Change in Gestational Diabetes Mellitus Status—A Pilot Study. Reprod Sci 2015; 22:904-10. [PMID: 25676578 DOI: 10.1177/1933719115570903] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Repeat pregnancies with different perinatal outcomes minimize underlying maternal genetic diversity and provide unique opportunities to investigate nongenetic risk factors and epigenetic mechanisms of pregnancy complications. We investigated gestational diabetes mellitus (GDM)-related differential DNA methylation in early pregnancy peripheral blood samples collected from women who had a change in GDM status in repeat pregnancies. Six study participants were randomly selected from among women who had 2 consecutive pregnancies, only 1 of which was complicated by GDM (case pregnancy) and the other was not (control pregnancy). Epigenome-wide DNA methylation was profiled using Illumina HumanMethylation 27 BeadChips. Differential Identification using Mixture Ensemble and false discovery rate (<10%) cutoffs were used to identify differentially methylated targets between the 2 pregnancies of each participant. Overall, 27 target sites, 17 hypomethylated (fold change [FC] range: 0.77-0.99) and 10 hypermethylated (FC range: 1.01-1.09), were differentially methylated between GDM and control pregnancies among 5 or more study participants. Novel genes were related to identified hypomethylated (such as NDUFC1, HAPLN3, HHLA3, and RHOG) or hypermethylated sites (such as SEP11, ZAR1, and DDR). Genes related to identified sites participated in cell morphology, cellular assembly, cellular organization, cellular compromise, and cell cycle. Our findings support early pregnancy peripheral blood DNA methylation differences in repeat pregnancies with change in GDM status. Similar, larger, and repeat pregnancy studies can enhance biomarker discovery and mechanistic studies of GDM.
Collapse
Affiliation(s)
- Daniel A Enquobahrie
- Center for Perinatal Studies, Swedish Medical Center, Seattle, WA, USA Department of Epidemiology, University of Washington, Seattle, WA, USA
| | - Amy Moore
- Department of Epidemiology, University of Washington, Seattle, WA, USA
| | - Seid Muhie
- Walter Reed Army Hospital, Washington DC, USA
| | - Mahlet G Tadesse
- Department of Mathematics and Statistics, Georgetown University, Washington DC, USA
| | - Shili Lin
- Department of Statistics, The Ohio State University, Columbus, OH, USA
| | - Michelle A Williams
- Department of Epidemiology, Harvard School of Public Health, Boston, MA, USA
| |
Collapse
|
89
|
Maghbooli Z, Hossein-nezhad A, Larijani B, Amini M, Keshtkar A. Global DNA methylation as a possible biomarker for diabetic retinopathy. Diabetes Metab Res Rev 2015; 31:183-9. [PMID: 25069700 DOI: 10.1002/dmrr.2584] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Revised: 06/26/2014] [Accepted: 07/04/2014] [Indexed: 12/12/2022]
Abstract
BACKGROUND We evaluated whether global levels of DNA methylation status were associated with retinopathy as well as providing a predictive role of DNA methylation in developing retinopathy in a case-control study of 168 patients with type 2 diabetes. METHODS The 5-methylcytosine content was assessed by reversed-phase high-pressure liquid chromatography of peripheral blood leukocytes to determine an individual's global DNA methylation status in the two groups, either with or without retinopathy. RESULTS The global DNA methylation levels were significantly higher in diabetic retinopathy patients compared with those in non-retinopathy patients (4.90 ± 0.12 vs. 4.22 ± 0.13, respectively; p = 0.001). There was a significant increasing trend in global DNA methylation levels in terms of progressing retinopathy (without retinopathy, 4.22 ± 0.13; non-proliferative diabetic retinopathy, 4.62 ± 0.17; proliferative diabetic retinopathy, 5.07 ± 0.21) (p = 0.006). Additionally, global DNA methylation independent of retinopathy risk factors, which include dyslipidaemia, hypertension, hyperglycaemia and duration of diabetes, was a predictive factor for retinopathy (OR = 1.53, p = 0.015). CONCLUSIONS Global DNA methylation is modulated during or possibly before the primary stage of diabetes. This observation verifies the metabolic memory effect of hyperglycaemia in early stage of an aetiological process that leads to type 2 diabetes and its associated complications.
Collapse
Affiliation(s)
- Zhila Maghbooli
- Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | | | | | | | | |
Collapse
|
90
|
Raciti GA, Nigro C, Longo M, Parrillo L, Miele C, Formisano P, Béguinot F. Personalized medicine and type 2 diabetes: lesson from epigenetics. Epigenomics 2015; 6:229-38. [PMID: 24811791 DOI: 10.2217/epi.14.10] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Similarly to genetic polymorphisms, epigenetic modifications may alter transcriptional activity and contribute to different traits of the Type 2 diabetes phenotype. The establishment of these epigenetic marks may precede diabetes onset and predict the disease. Current evidence now indicates that epigenetic differences represent markers of diabetes risk. Studies on epigenome plasticity revealed that cytokines and other metabolites, by affecting DNA methylation, may acutely reprogram gene expression and contribute to the Type 2 diabetes phenotype even in the adult life. The available evidence further indicates that epigenetic marks across the genome are subject to dynamic variations in response to environmental cues. Finally, different genes responsible for the interindividual variability in antidiabetic drug response are subjected to epigenetic regulation. Determining how specific epigenetic profiles determine diabetes is a challenging task. In the near future, the identification of epigenetic marks predictive of diabetes risk or response to treatment may offer unanticipated opportunities to personalize Type 2 diabetes management.
Collapse
Affiliation(s)
- Gregory Alexander Raciti
- Dipartimento di Scienze Mediche Traslazionali, 'Federico II' University of Naples Medical School & Istituto per l' Endocrinologia e l' Oncologia Sperimentale del CNR, Via Sergio Pansini, 5 - Naples, 80131, Italy
| | | | | | | | | | | | | |
Collapse
|
91
|
Rajesh P, Balasubramanian K. Gestational exposure to di(2-ethylhexyl) phthalate (DEHP) impairs pancreatic β-cell function in F1 rat offspring. Toxicol Lett 2015; 232:46-57. [DOI: 10.1016/j.toxlet.2014.09.025] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Revised: 09/10/2014] [Accepted: 09/28/2014] [Indexed: 12/18/2022]
|
92
|
Keller M, Kralisch S, Rohde K, Schleinitz D, Dietrich A, Schön MR, Gärtner D, Lohmann T, Dreßler M, Tönjes A, Stumvoll M, Kovacs P, Fasshauer M, Blüher M, Böttcher Y. Global DNA methylation levels in human adipose tissue are related to fat distribution and glucose homeostasis. Diabetologia 2014; 57:2374-83. [PMID: 25145546 DOI: 10.1007/s00125-014-3356-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Accepted: 07/23/2014] [Indexed: 12/31/2022]
Abstract
AIMS/HYPOTHESIS Epigenetic alterations may influence the metabolic pathways involved in human obesity. We hypothesised that global DNA methylation levels in adipose tissue might be associated with obesity and related phenotypes. METHODS We measured global DNA methylation levels in paired samples of subcutaneous adipose tissue (SAT) and omental visceral adipose tissue (OVAT) from 51 individuals, and in leucocytes from 559 Sorbs, a population from Germany, using LUminometric Methylation Assay (LUMA). To further investigate the underlying mechanisms of the observed associations, we measured global methylation levels in 3T3-L1 adipocytes exposed to glucose, insulin and lipids. RESULTS Global methylation levels (±SD) were significantly higher in OVAT (74.27% ± 2.2%) compared with SAT (71.97% ± 2.4%; paired t test, p < 1 × 10(-9)). Furthermore, global methylation levels in SAT were positive correlates of measures of fat distribution (waist measurement, WHR) and glucose homeostasis (HbA1c) (all p < 0.015 after accounting for multiple testing and covariates). Global methylation levels in the German Sorb cohort were associated with glucose homeostasis, but this association did not withstand adjustment for covariates. Exposure of 3T3-L1 adipocytes to insulin, palmitate and glucose decreased global methylation levels 1 h after treatment relative to controls. CONCLUSIONS/INTERPRETATION Our data suggest that the variability in global methylation in adipose tissue might be related to alterations in glucose metabolism.
Collapse
Affiliation(s)
- Maria Keller
- Medical Faculty, IFB Adiposity Diseases, University of Leipzig, Liebigstrasse 21, 04103, Leipzig, Germany
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
93
|
DNA methylation: the pivotal interaction between early-life nutrition and glucose metabolism in later life. Br J Nutr 2014; 112:1850-7. [PMID: 25327140 DOI: 10.1017/s0007114514002827] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Traditionally, it has been widely acknowledged that genes together with adult lifestyle factors determine the risk of developing some metabolic diseases such as insulin resistance, obesity and diabetes mellitus in later life. However, there is now substantial evidence that prenatal and early-postnatal nutrition play a critical role in determining susceptibility to these diseases in later life. Maternal nutrition has historically been a key determinant for offspring health, and gestation is the critical time window that can affect the growth and development of offspring. The Developmental Origins of Health and Disease (DOHaD) hypothesis proposes that exposures during early life play a critical role in determining the risk of developing metabolic diseases in adulthood. Currently, there are substantial epidemiological studies and experimental animal models that have demonstrated that nutritional disturbances during the critical periods of early-life development can significantly have an impact on the predisposition to developing some metabolic diseases in later life. The hypothesis that epigenetic mechanisms may link imbalanced early-life nutrition with altered disease risk has been widely accepted in recent years. Epigenetics can be defined as the study of heritable changes in gene expression that do not involve alterations in the DNA sequence. Epigenetic processes play a significant role in regulating tissue-specific gene expression, and hence alterations in these processes may induce long-term changes in gene function and metabolism that persist throughout the life course. The present review focuses on how nutrition in early life can alter the epigenome, produce different phenotypes and alter disease susceptibilities, especially for impaired glucose metabolism.
Collapse
|
94
|
Rajesh P, Balasubramanian K. Phthalate exposure in utero causes epigenetic changes and impairs insulin signalling. J Endocrinol 2014; 223:47-66. [PMID: 25232145 DOI: 10.1530/joe-14-0111] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Di-(2-ethylhexyl)phthalate (DEHP) is an endocrine-disrupting chemical (EDC), widely used as a plasticiser. Developmental exposure to EDCs could alter epigenetic programming and result in adult-onset disease. We investigated whether DEHP exposure during development affects glucose homoeostasis in the F1 offspring as a result of impaired insulin signal transduction in gastrocnemius muscle. Pregnant Wistar rats were administered DEHP (0, 1, 10 and 100 mg/kg per day) from embryonic days 9-21 orally. DEHP-exposed offspring exhibited elevated blood glucose, impaired serum insulin, glucose tolerance and insulin tolerance, along with reduced insulin receptor, glucose uptake and oxidation in the muscle at postnatal day 60. The levels of insulin signalling molecules and their phosphorylation were down-regulated in DEHP-exposed offspring. However, phosphorylated IRS1(Ser636/639), which impedes binding of downstream effectors and the negative regulator (PTEN) of PIP3, was increased in DEHP-exposed groups. Down-regulation of glucose transporter 4 (Glut4 (Slc2a4)) gene expression and increased GLUT4(Ser488) phosphorylation, which decreases its intrinsic activity and translocation towards the plasma membrane, were recorded. Chromatin immunoprecipitation assays detected decreased MYOD binding and increased histone deacetylase 2 interaction towards Glut4, indicative of the tight chromatin structure at the Glut4 promoter. Increased DNMTs and global DNA methylation levels were also observed. Furthermore, methylation of Glut4 at the MYOD-binding site was increased in DEHP-exposed groups. These findings indicate that, gestational DEHP exposure predisposes F1 offspring to glucometabolic dysfunction at adulthood by down-regulating the expression of critical genes involved in the insulin signalling pathway. Furthermore, DEHP-induced epigenetic alterations in Glut4 appear to play a significant role in disposition towards this metabolic abnormality.
Collapse
Affiliation(s)
- Parsanathan Rajesh
- Department of EndocrinologyDr ALM Post Graduate Institute of Basic Medical Sciences, University of Madras, Taramani, Chennai 600 113, India
| | - Karundevi Balasubramanian
- Department of EndocrinologyDr ALM Post Graduate Institute of Basic Medical Sciences, University of Madras, Taramani, Chennai 600 113, India
| |
Collapse
|
95
|
Dhliwayo N, Sarras MP, Luczkowski E, Mason SM, Intine RV. Parp inhibition prevents ten-eleven translocase enzyme activation and hyperglycemia-induced DNA demethylation. Diabetes 2014; 63:3069-76. [PMID: 24722243 PMCID: PMC4141369 DOI: 10.2337/db13-1916] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Accepted: 04/01/2014] [Indexed: 01/24/2023]
Abstract
Studies from human cells, rats, and zebrafish have documented that hyperglycemia (HG) induces the demethylation of specific cytosines throughout the genome. We previously documented that a subset of these changes become permanent and may provide, in part, a mechanism for the persistence of complications referred to as the metabolic memory phenomenon. In this report, we present studies aimed at elucidating the molecular machinery that is responsible for the HG-induced DNA demethylation observed. To this end, RNA expression and enzymatic activity assays indicate that the ten-eleven translocation (Tet) family of enzymes are activated by HG. Furthermore, through the detection of intermediates generated via conversion of 5-methyl-cytosine back to the unmethylated form, the data were consistent with the use of the Tet-dependent iterative oxidation pathway. In addition, evidence is provided that the activity of the poly(ADP-ribose) polymerase (Parp) enzyme is required for activation of Tet activity because the use of a Parp inhibitor prevented demethylation of specific loci and the accumulation of Tet-induced intermediates. Remarkably, this inhibition was accompanied by a complete restoration of the tissue regeneration deficit that is also induced by HG. The ultimate goal of this work is to provide potential new avenues for therapeutic discovery.
Collapse
Affiliation(s)
- Nyembezi Dhliwayo
- Dr. William M. Scholl College of Podiatric Medicine, Rosalind Franklin University of Medicine and Science, North Chicago, IL
| | - Michael P Sarras
- Department of Cell Biology and Anatomy, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, IL
| | - Ernest Luczkowski
- Dr. William M. Scholl College of Podiatric Medicine, Rosalind Franklin University of Medicine and Science, North Chicago, IL
| | - Samantha M Mason
- Dr. William M. Scholl College of Podiatric Medicine, Rosalind Franklin University of Medicine and Science, North Chicago, IL
| | - Robert V Intine
- Dr. William M. Scholl College of Podiatric Medicine, Rosalind Franklin University of Medicine and Science, North Chicago, IL Department of Cell Biology and Anatomy, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, IL
| |
Collapse
|
96
|
Simar D, Versteyhe S, Donkin I, Liu J, Hesson L, Nylander V, Fossum A, Barrès R. DNA methylation is altered in B and NK lymphocytes in obese and type 2 diabetic human. Metabolism 2014; 63:1188-97. [PMID: 24996265 DOI: 10.1016/j.metabol.2014.05.014] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Revised: 05/17/2014] [Accepted: 05/29/2014] [Indexed: 12/21/2022]
Abstract
OBJECTIVE Obesity is associated with low-grade inflammation and the infiltration of immune cells in insulin-sensitive tissues, leading to metabolic impairment. Epigenetic mechanisms control immune cell lineage determination, function and migration and are implicated in obesity and type 2 diabetes (T2D). The aim of this study was to determine the global DNA methylation profile of immune cells in obese and T2D individuals in a cell type-specific manner. MATERIAL AND METHODS Fourteen obese subjects and 11 age-matched lean subjects, as well as 12 T2D obese subjects and 7 age-matched lean subjects were recruited. Global DNA methylation levels were measured in a cell type-specific manner by flow cytometry. We validated the assay against mass spectrometry measures of the total 5-methylcytosine content in cultured cells treated with the hypomethylation agent decitabine (r=0.97, p<0.001). RESULTS Global DNA methylation in peripheral blood mononuclear cells, monocytes, lymphocytes or T cells was not altered in obese or T2D subjects. However, analysis of blood fractions from lean, obese, and T2D subjects showed increased methylation levels in B cells from obese and T2D subjects and in natural killer cells from T2D patients. In these cell types, DNA methylation levels were positively correlated with insulin resistance, suggesting an association between DNA methylation changes, immune function and metabolic dysfunction. CONCLUSIONS Both obesity and T2D are associated with an altered epigenetic signature of the immune system in a cell type-specific manner. These changes could contribute to the altered immune functions associated with obesity and insulin resistance.
Collapse
Affiliation(s)
- David Simar
- Inflammation and Infection Research, School of Medical Sciences, UNSW Australia, Sydney NSW 2052, Australia.
| | - Soetkin Versteyhe
- The Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Ida Donkin
- The Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Jia Liu
- Adult Cancer Program, Lowy Cancer Research Centre and Prince of Wales Clinical School, UNSW Australia, Sydney NSW 2052, Australia
| | - Luke Hesson
- Adult Cancer Program, Lowy Cancer Research Centre and Prince of Wales Clinical School, UNSW Australia, Sydney NSW 2052, Australia
| | - Vibe Nylander
- The Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Anna Fossum
- Biotech Research and Innovation Centre (BRIC), University of Copenhagen, Copenhagen, Denmark
| | - Romain Barrès
- The Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark; School of Medical Sciences, UNSW Australia, Sydney NSW 2052, Australia.
| |
Collapse
|
97
|
Limaye S, Salvi S. Obesity and asthma: the role of environmental pollutants. Immunol Allergy Clin North Am 2014; 34:839-55. [PMID: 25282295 DOI: 10.1016/j.iac.2014.07.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Air pollution is a well-known risk for lung diseases, including asthma. Growing evidences suggesting air pollution as a novel risk factor for the development of obesity. Several Epidemiological studies have ascertained an association between various ambient and indoor air pollutants and obesity by medium of endocrine disruptive chemicals that can disrupt the normal development and homeostatic controls over adipogenesis and energy balance and induce obesity. Several obesity-induced mechanisms have been proposed that increases this vulnerability of obese individuals to harmful effects of air pollution rendering them more susceptible to developing air-pollution driven incident asthma or worsening of already existing asthma.
Collapse
Affiliation(s)
- Sneha Limaye
- Chest Research Foundation, Marigold Premises, Survey No 15, Vadgaonsheri, Kalyaninagar, Pune 411 014, India.
| | - Sundeep Salvi
- Chest Research Foundation, Marigold Premises, Survey No 15, Vadgaonsheri, Kalyaninagar, Pune 411 014, India
| |
Collapse
|
98
|
Rodney NC, Mulligan CJ. A biocultural study of the effects of maternal stress on mother and newborn health in the Democratic Republic of Congo. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2014; 155:200-9. [DOI: 10.1002/ajpa.22568] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 06/30/2014] [Accepted: 07/01/2014] [Indexed: 11/11/2022]
Affiliation(s)
- Nicole C. Rodney
- Department of Anthropology; University of Florida; Gainesville FL 32611
| | - Connie J. Mulligan
- Department of Anthropology; University of Florida; Gainesville FL 32611
- Genetics Institute, University of Florida; Gainesville FL 32610
| |
Collapse
|
99
|
Xu N, Chua AK, Jiang H, Liu NA, Goodarzi MO. Early embryonic androgen exposure induces transgenerational epigenetic and metabolic changes. Mol Endocrinol 2014; 28:1329-36. [PMID: 24992182 DOI: 10.1210/me.2014-1042] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Androgen excess is a central feature of polycystic ovary syndrome (PCOS), which affects 6% to 10% of young women. Mammals exposed to elevated androgens in utero develop PCOS-like phenotypes in adulthood, suggesting fetal origins of PCOS. We hypothesize that excess androgen exposure during early embryonic development may disturb the epigenome and disrupt metabolism in exposed and unexposed subsequent generations. Zebrafish were used to study the underlying mechanism of fetal origins. Embryos were exposed to androgens (testosterone and dihydrotestosterone) early at 26 to 56 hours post fertilization or late at 21 to 28 days post fertilization. Exposed zebrafish (F0) were grown to adults and crossed to generate unexposed offspring (F1). For both generations, global DNA methylation levels were examined in ovaries using a luminometric methylation assay, and fasting and postprandial blood glucose levels were measured. We found that early but not late androgen exposure induced changes in global methylation and glucose homeostasis in both generations. In general, F0 adult zebrafish exhibited altered global methylation levels in the ovary; F1 zebrafish had global hypomethylation. Fasting blood glucose levels were decreased in F0 but increased in F1; postprandial glucose levels were elevated in both F0 and F1. This androgenized zebrafish study suggests that transient excess androgen exposure during early development can result in transgenerational alterations in the ovarian epigenome and glucose homeostasis. Current data cannot establish a causal relationship between epigenetic changes and altered glucose homeostasis. Whether transgenerational epigenetic alteration induced by prenatal androgen exposure plays a role in the development of PCOS in humans deserves study.
Collapse
Affiliation(s)
- Ning Xu
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, California 90048
| | | | | | | | | |
Collapse
|
100
|
Maghbooli Z, Larijani B, Emamgholipour S, Amini M, Keshtkar A, Pasalar P. Aberrant DNA methylation patterns in diabetic nephropathy. J Diabetes Metab Disord 2014; 13:69. [PMID: 25028646 PMCID: PMC4099150 DOI: 10.1186/2251-6581-13-69] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Accepted: 06/11/2014] [Indexed: 12/18/2022]
Abstract
Background The aim of this study was to evaluate whether global levels of DNA methylation status were associated with albuminuria and progression of diabetic nephropathy in a case-control study of 123 patients with type 2 diabetes- 53 patients with albuminuria and 70 patients without albuminuria. Methods The 5-methyl cytosine content was assessed by reverse phase high pressure liquid chromatography (RP-HPLC) of peripheral blood mononuclear cells to determine individual global DNA methylation status in two groups. Results Global DNA methylation levels were significantly higher in patients with albuminuria compared with those in normal range of albuminuria (p = 0.01). There were significant differences in global levels of DNA methylation in relation to albuminuria (p = 0.028) and an interesting pattern of increasing global levels of DNA methylation in terms of albuminuria severity. In patients with micro- and macro albuminuria, we found no significant correlations between global DNA methylation levels and duration of diabetes (p > 0.05). In both sub groups, there were not significant differences between global DNA methylation levels with good and poor glycaemic control (p > 0.05). In addition, in patients with albuminuria, no differences in DNA methylation levels were observed between patients with and without other risk factors including age, gender, hypertension, dyslipidaemia and obesity. Conclusions These data may be helpful in further studies to develop novel biomarkers and new strategies for clinical care of patients at risk of diabetic nephropathy.
Collapse
Affiliation(s)
- Zhila Maghbooli
- Endocrinology and Metabolism Clinical Sciences Institute of Tehran University of medical sciences, EMRI, 5th floor, Shariati Hospital, North Karegar Avenue, P.O Box: 1411413137, Tehran, Iran
| | - Bagher Larijani
- Endocrinology and Metabolism Clinical Sciences Institute of Tehran University of medical sciences, EMRI, 5th floor, Shariati Hospital, North Karegar Avenue, P.O Box: 1411413137, Tehran, Iran
| | - Solaleh Emamgholipour
- Clinical Biochemistry Department, School of Medicine, Faculty of Medicine Tehran University of medical sciences, EMRI, 5th floor, Shariati Hospital, North Karegar Avenue, P.O Box: 1411413137, Tehran, Iran
| | - Manochehr Amini
- Nephrology Department, Shariati Hospital, Tehran University of Medical Sciences, EMRI, 5th floor, Shariati Hospital, North Karegar Avenue, P.O Box: 1411413137, Tehran, Iran
| | - Abbasali Keshtkar
- Endocrinology and Metabolism Clinical Sciences Institute of Tehran University of medical sciences, EMRI, 5th floor, Shariati Hospital, North Karegar Avenue, P.O Box: 1411413137, Tehran, Iran
| | - Parvin Pasalar
- Clinical Biochemistry Department, School of Medicine, Faculty of Medicine Tehran University of medical sciences, EMRI, 5th floor, Shariati Hospital, North Karegar Avenue, P.O Box: 1411413137, Tehran, Iran
| |
Collapse
|