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Ghazi L, Annabathula RV, Bello NA, Zhou L, Stacey RB, Upadhya B. Hypertension Across a Woman's Life Cycle. Curr Hypertens Rep 2022; 24:723-733. [PMID: 36350493 PMCID: PMC9893311 DOI: 10.1007/s11906-022-01230-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/17/2022] [Indexed: 11/11/2022]
Abstract
PURPOSE OF REVIEW We reviewed the effects of hypertension and the means to prevent and treat it across the spectrum of a woman's lifespan and identified gaps in sex-specific mechanisms contributing to hypertension in women that need to be addressed. RECENT FINDINGS Hypertension continues to be an important public health problem for women across all life stages from adolescence through pregnancy, menopause, and older age. There remain racial, ethnic, and socioeconomic differences in hypertension rates not only overall but also between the sexes. Blood pressure cutoffs during pregnancy have not been updated to reflect the 2017 ACC/AHA changes due to a lack of data. Additionally, the mechanisms behind hypertension development in menopause, including sex hormones and genetic factors, are not well understood. In the setting of increasing inactivity and obesity, along with an aging population, hypertension rates are increasing in women. Screening and management of hypertension throughout a women's lifespan are necessary to reduce the burden of cardiovascular disease, and further research to understand sex-specific hypertension mechanisms is needed.
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Affiliation(s)
- Lama Ghazi
- Department of Internal Medicine, Clinical and Translational Research Accelerator, Yale University, New Haven, CT, USA
| | - Rahul V Annabathula
- Section on Cardiovascular Medicine, Department of Internal Medicine, Wake Forest School of Medicine, Medical Center Boulevard, NC, 27157-1045, Winston-Salem, USA
| | - Natalie A Bello
- Department of Cardiology, Cedars-Sinai Medical Center, Smidt Heart Institute, Los Angeles, CA, USA
| | - Li Zhou
- Section on Cardiovascular Medicine, Department of Internal Medicine, Wake Forest School of Medicine, Medical Center Boulevard, NC, 27157-1045, Winston-Salem, USA
| | - Richard Brandon Stacey
- Section on Cardiovascular Medicine, Department of Internal Medicine, Wake Forest School of Medicine, Medical Center Boulevard, NC, 27157-1045, Winston-Salem, USA
| | - Bharathi Upadhya
- Section on Cardiovascular Medicine, Department of Internal Medicine, Wake Forest School of Medicine, Medical Center Boulevard, NC, 27157-1045, Winston-Salem, USA.
- Division of Cardiology, Department of Medicine, Duke University School of Medicine, Durham, NC, USA.
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Yang J, Hall JE, Jose PA, Chen K, Zeng C. Comprehensive insights in GRK4 and hypertension: From mechanisms to potential therapeutics. Pharmacol Ther 2022; 239:108194. [DOI: 10.1016/j.pharmthera.2022.108194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 03/30/2022] [Accepted: 04/21/2022] [Indexed: 11/24/2022]
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Muhammad T, Paul R, Rashmi R, Srivastava S. Examining sex disparity in the association of waist circumference, waist-hip ratio and BMI with hypertension among older adults in India. Sci Rep 2022; 12:13117. [PMID: 35907951 PMCID: PMC9338983 DOI: 10.1038/s41598-022-17518-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Accepted: 07/26/2022] [Indexed: 11/12/2022] Open
Abstract
Hypertension is a public health issue touted as a “silent killer” worldwide. The present study aimed to explore the sex differential in the association of anthropometric measures including body mass index, waist circumference, and waist-hip ratio with hypertension among older adults in India. The study used data from the Longitudinal Aging Study in India (LASI) conducted during 2017–18. The sample contains 15,098 males and 16,366 females aged 60 years and above. Descriptive statistics (percentages) along with bivariate analysis were presented. Multivariable binary logistic regression analyses were used to examine the associations between the outcome variable (hypertension) and putative risk or protective factors. About 33.9% of males and 38.2% of females aged 60 years and above suffered from hypertension. After adjusting for the socioeconomic, demographic and health-behavioral factors, the odds of hypertension were 1.37 times (CI: 1.27–1.47), significantly higher among older adults who were obese or overweight than those with no overweight/obese condition. Older adults with high-risk waist circumference and waist-hip ratio had 1.16 times (CI: 1.08–1.25) and 1.42 times (CI: 1.32–1.51) higher odds of suffering from hypertension, respectively compared to their counterparts with no high-risk waist circumference or waist-hip ratio. The interaction effects showed that older females with overweight/obesity [OR: 0.84; CI: 0.61–0.74], high-risk waist circumference [OR: 0.89; CI: 0.78–0.99], and high-risk waist-hip ratio [OR: 0.90; CI: 0.83–0.97] had a lower chance of suffering from hypertension than their male counterparts with the similar anthropometric status. The findings suggested a larger magnitude of the association between obesity, high-risk waist circumference, high-risk waist-hip ratio and prevalent hypertension among older males than females. The study also highlights the importance of measuring obesity and central adiposity in older individuals and using such measures as screening tools for timely identification of hypertension.
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Affiliation(s)
- T Muhammad
- International Institute for Population Sciences, Mumbai, 400088, India
| | - Ronak Paul
- International Institute for Population Sciences, Mumbai, 400088, India
| | - Rashmi Rashmi
- International Institute for Population Sciences, Mumbai, 400088, India
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Rooney M, Hughes CF, Strain JJ, Clements M, McNulty H, Ward M. Impact of the MTHFR C677T polymorphism on blood pressure and related central hemodynamic parameters in healthy adults. J Hum Nutr Diet 2022; 35:689-700. [PMID: 35821207 PMCID: PMC9541256 DOI: 10.1111/jhn.13061] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 06/21/2022] [Indexed: 11/28/2022]
Abstract
BACKGROUND The C677T polymorphism in the gene encoding methylenetetrahydrofolate reductase (MTHFR) is associated with an increased risk of hypertension and cardiovascular disease. Riboflavin, the MTHFR cofactor, is an important modulator of blood pressure (BP) in adults homozygous for this polymorphism (TT genotype). The effect of this genetic variant on BP and related central hemodynamic parameters in healthy adults has not been previously investigated and was examined in this study. METHODOLOGY Brachial BP, central BP and pulse wave velocity (PWV; SphygmoCor® XCEL) were measured in adults 18-65 years pre-screened for MTHFR genotype. Riboflavin status was assessed using the erythrocyte glutathione reductase activation coefficient (EGRac) assay. RESULTS 242 adults with the MTHFR 677TT genotype and age-matched non-TT (CC/CT) genotype controls were identified from a total cohort of 2,546 adults pre-screened for MTHFR genotype. The TT genotype was found to be an independent determinant of hypertension (P=0.010), along with low riboflavin status (P=0.002). Brachial systolic and diastolic BP were higher in TT v non-TT adults by 5.5±1.2 mmHg and 2.4±0.9 mmHg, respectively (both P<0.001). A stronger phenotype was observed in females, with an almost 10 mmHg difference in mean systolic BP in TT v non-TT genotype groups: 134.9 (95% CI 132.1-137.6) vs 125.2 (95% CI 122.3-128.0) mmHg; P<0.001. In addition, PWV was faster in women with the TT genotype (P=0.043). CONCLUSION This study provides the first evidence that brachial and central BP are significantly higher in adults with the variant MTHFR 677TT genotype, and that the BP phenotype is more pronounced in females. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Martina Rooney
- Nutrition Innovation Centre for Food and Health (NICHE), Ulster University, Cromore Rd, Coleraine, BT52 1SA, Northern, Ireland
| | - Catherine F Hughes
- Nutrition Innovation Centre for Food and Health (NICHE), Ulster University, Cromore Rd, Coleraine, BT52 1SA, Northern, Ireland
| | - J J Strain
- Nutrition Innovation Centre for Food and Health (NICHE), Ulster University, Cromore Rd, Coleraine, BT52 1SA, Northern, Ireland
| | - Michelle Clements
- Nutrition Innovation Centre for Food and Health (NICHE), Ulster University, Cromore Rd, Coleraine, BT52 1SA, Northern, Ireland
| | - Helene McNulty
- Nutrition Innovation Centre for Food and Health (NICHE), Ulster University, Cromore Rd, Coleraine, BT52 1SA, Northern, Ireland
| | - Mary Ward
- Nutrition Innovation Centre for Food and Health (NICHE), Ulster University, Cromore Rd, Coleraine, BT52 1SA, Northern, Ireland
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5
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Vaura F, Palmu J, Aittokallio J, Kauko A, Niiranen T. Genetic, Molecular, and Cellular Determinants of Sex-Specific Cardiovascular Traits. Circ Res 2022; 130:611-631. [PMID: 35175841 DOI: 10.1161/circresaha.121.319891] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Despite the well-known sex dimorphism in cardiovascular disease traits, the exact genetic, molecular, and cellular underpinnings of these differences are not well understood. A growing body of evidence currently points at the links between cardiovascular disease traits and the genome, epigenome, transcriptome, and metabolome. However, the sex-specific differences in these links remain largely unstudied due to challenges in bioinformatic methods, inadequate statistical power, analytic costs, and paucity of valid experimental models. This review article provides an overview of the literature on sex differences in genetic architecture, heritability, epigenetic changes, transcriptomic signatures, and metabolomic profiles in relation to cardiovascular disease traits. We also review the literature on the associations between sex hormones and cardiovascular disease traits and discuss the potential mechanisms underlying these associations, focusing on human studies.
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Affiliation(s)
- Felix Vaura
- Department of Internal Medicine (F.V., J.P., A.K., T.N.), University of Turku, Finland
| | - Joonatan Palmu
- Department of Internal Medicine (F.V., J.P., A.K., T.N.), University of Turku, Finland
| | - Jenni Aittokallio
- Department of Anesthesiology and Intensive Care (J.A.), University of Turku, Finland.,Division of Perioperative Services, Intensive Care and Pain Medicine (J.A.), Turku University Hospital, Finland
| | - Anni Kauko
- Department of Internal Medicine (F.V., J.P., A.K., T.N.), University of Turku, Finland
| | - Teemu Niiranen
- Department of Internal Medicine (F.V., J.P., A.K., T.N.), University of Turku, Finland.,Division of Medicine (T.N.), Turku University Hospital, Finland.,Department of Public Health and Welfare, Finnish Institute for Health and Welfare, Helsinki, Finland (T.N.)
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Matušková L, Javorka M. Adrenergic receptors gene polymorphisms and autonomic nervous control of heart and vascular tone. Physiol Res 2022; 70:S495-S510. [DOI: 10.33549/physiolres.934799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Adrenergic receptors (ARs) are the primary targets of catecholamines released from the sympathetic nerve endings during their activation. ARs play a central role in autonomic nervous system and serve as important targets of widely used drugs. Several ARs gene polymorphisms were found to be associated with cardiovascular disease in previous clinical studies. Although more precise mechanism of the polymorphisms influence on autonomic control of cardiovascular system was studied in many previous physiological studies, their results are not unequivocal. This paper reviews the results of clinical and physiological studies focused on the impact of selected common single nucleotide polymorphisms of ARs genes involved in sympathetic control on cardiovascular system and its control. In summary, many studies assessed only a very limited range of cardiovascular control related parameters providing only very limited view on the complex cardiovascular control. The overview of partially contradicting results underlines a need to examine wider range of cardiovascular measures including their reactivity under various stress conditions requiring further study. It is expected that an effect of one given polymorphism is not very prominent, but it is suggested that even subtle differences in cardiovascular control could – on a longer time scale – lead to the development of severe pathological consequences.
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Affiliation(s)
- L Matušková
- Department of Physiology, Comenius University in Bratislava, Jessenius Faculty of Medicine in Martin, Martin, Slovakia.
| | - M Javorka
- Department of Physiology, Comenius University in Bratislava, Jessenius Faculty of Medicine in Martin, Martin, Slovakia
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7
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Quesada O, Claggett B, Rodriguez F, Cai J, Moncrieft AE, Garcia K, Del Rios Rivera M, Hanna DB, Daviglus ML, Talavera GA, Bairey Merz CN, Solomon SD, Cheng S, Bello NA. Associations of Insulin Resistance With Systolic and Diastolic Blood Pressure: A Study From the HCHS/SOL. Hypertension 2021; 78:716-725. [PMID: 34379440 PMCID: PMC8650976 DOI: 10.1161/hypertensionaha.120.16905] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 06/21/2021] [Indexed: 01/21/2023]
Abstract
[Figure: see text].
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Affiliation(s)
- Odayme Quesada
- Women's Heart Center, The Christ Hospital Heart and Vascular Institute, Cincinnati, OH (O.Q.)
- Barbra Streisand Women's Heart Center, Cedars-Sinai Smidt Heart Institute, Los Angeles, CA (O.Q., C.N.B.M., S.C.)
| | - Brian Claggett
- Cardiology Division, Brigham and Women's Hospital, Harvard Medical School, Boston, MA (B.C., S.D.S.)
| | - Fatima Rodriguez
- Divison of Cardiovascular Medicine, Stanford University; CA (F.R.)
| | - Jianwen Cai
- Department of Biostatistics, Collaborative Studies Coordinating Center, University of North Carolina at Chapel Hill (J.C.)
| | | | - Karin Garcia
- Department of Psychology, University of Miami, FL (A.E.M., K.G.)
| | - Marina Del Rios Rivera
- Institute for Minority Health Research, University of Illinois at Chicago (M.D.R.R., M.L.D.)
| | - David B Hanna
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY (D.B.H.)
| | - Martha L Daviglus
- Institute for Minority Health Research, University of Illinois at Chicago (M.D.R.R., M.L.D.)
| | - Gregory A Talavera
- Division of Health Promotion and Behavioral Science, San Diego State University, CA (G.T.)
| | - C Noel Bairey Merz
- Barbra Streisand Women's Heart Center, Cedars-Sinai Smidt Heart Institute, Los Angeles, CA (O.Q., C.N.B.M., S.C.)
| | - Scott D Solomon
- Cardiology Division, Brigham and Women's Hospital, Harvard Medical School, Boston, MA (B.C., S.D.S.)
| | - Susan Cheng
- Barbra Streisand Women's Heart Center, Cedars-Sinai Smidt Heart Institute, Los Angeles, CA (O.Q., C.N.B.M., S.C.)
| | - Natalie A Bello
- Department of Medicine, Division of Cardiology, Columbia University Irving Medical Center, New York, NY (N.A.B.)
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8
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Suciu L, Suciu M, Voicu M, Mureșan R, Pârv FV, Buda V, Cristescu C. Factors Influencing Adherence to Treatment and Quality of Life for a Group of Patients with Essential Hypertension in Romania. Patient Prefer Adherence 2021; 15:483-491. [PMID: 33679131 PMCID: PMC7926037 DOI: 10.2147/ppa.s269119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 01/19/2021] [Indexed: 12/18/2022] Open
Abstract
PURPOSE Romania has a high prevalence of hypertension (45.1% in 2016). Whether this is attributable to a low rate of treatment adherence-which can aggravate the pathology and reduce patients' quality of life (QoL)-is unknown. To address this point, the present study investigated the factors that influence short- and long-term adherence and QoL in patients with arterial hypertension using a specially designed questionnaire. PATIENTS AND METHODS The study enrolled 289 patients at different stages of hypertension with or without comorbidities. The diagnosis of hypertension was established by the cardiologist, and treatment regimens were communicated by patients to the clinical pharmacist who administered the questionnaire, which comprised 7 domains with variable numbers of items. RESULTS The majority of surveyed patients (57.43%) considered that their capacity for effort was decreased because of their hypertension, with 65.05% reporting that they were affected by symptoms associated with high blood pressure (eg, headache and dizziness). Most patients (71.28%) understood the consequences of discontinuing their medication and the severe complications of hypertension, and 69.55% indicated that they would not stop treatment if they experienced side effects. For 53.28% of patients, social activity was significantly affected by their condition. Only 47.05% of patients underwent regular mandatory medical examinations and 55.36% periodically monitored their blood pressure at home. A regression analysis revealed correlations between specific questionnaire items and patient characteristics. CONCLUSION Nonpharmacologic factors that were shown to influence patients' adherence to treatment and QoL included the level of health education and knowledge of disease complications, self-monitoring of hypertension, and consultation with medical and pharmaceutical healthcare providers regarding hypertension and its treatment.
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Affiliation(s)
- Liana Suciu
- Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, University of Medicine and Pharmacy Victor Babeș, Timisoara, Romania
| | - Maria Suciu
- Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, University of Medicine and Pharmacy Victor Babeș, Timisoara, Romania
| | - Mirela Voicu
- Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, University of Medicine and Pharmacy Victor Babeș, Timisoara, Romania
- Correspondence: Maria Suciu; Mirela Voicu Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, University of Medicine and Pharmacy Victor Babeș, Eftimie Murgu Square, No. 1-3, Timișoara, RomâniaTel +40723319050; +40745763424 Email ;
| | - Raluca Mureșan
- Department of Mathematics, Faculty of Mathematics and Informatics, West University, Timisoara, Romania
| | - Florina Viorica Pârv
- Department of Cardiology, Faculty of Medicine, University of Medicine and Pharmacy Victor Babeș, Timișoara, Romania
| | - Valentina Buda
- Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, University of Medicine and Pharmacy Victor Babeș, Timisoara, Romania
| | - Carmen Cristescu
- Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, University of Medicine and Pharmacy Victor Babeș, Timisoara, Romania
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Sabbatini AR, Kararigas G. Estrogen-related mechanisms in sex differences of hypertension and target organ damage. Biol Sex Differ 2020; 11:31. [PMID: 32487164 PMCID: PMC7268741 DOI: 10.1186/s13293-020-00306-7] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 05/04/2020] [Indexed: 12/13/2022] Open
Abstract
Hypertension (HTN) is a primary risk factor for cardiovascular (CV) events, target organ damage (TOD), premature death and disability worldwide. The pathophysiology of HTN is complex and influenced by many factors including biological sex. Studies show that the prevalence of HTN is higher among adults aged 60 and over, highlighting the increase of HTN after menopause in women. Estrogen (E2) plays an important role in the development of systemic HTN and TOD, exerting several modulatory effects. The influence of E2 leads to alterations in mechanisms regulating the sympathetic nervous system, renin-angiotensin-aldosterone system, body mass, oxidative stress, endothelial function and salt sensitivity; all associated with a crucial inflammatory state and influenced by genetic factors, ultimately resulting in cardiac, vascular and renal damage in HTN. In the present article, we discuss the role of E2 in mechanisms accounting for the development of HTN and TOD in a sex-specific manner. The identification of targets with therapeutic potential would contribute to the development of more efficient treatments according to individual needs.
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Affiliation(s)
| | - Georgios Kararigas
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany.
- DZHK (German Centre for Cardiovascular Research), partner site Berlin, Berlin, Germany.
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10
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Wenger NK, Arnold A, Bairey Merz CN, Cooper-DeHoff RM, Ferdinand KC, Fleg JL, Gulati M, Isiadinso I, Itchhaporia D, Light-McGroary K, Lindley KJ, Mieres JH, Rosser ML, Saade GR, Walsh MN, Pepine CJ. Hypertension Across a Woman's Life Cycle. J Am Coll Cardiol 2018; 71:1797-1813. [PMID: 29673470 PMCID: PMC6005390 DOI: 10.1016/j.jacc.2018.02.033] [Citation(s) in RCA: 148] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 02/16/2018] [Accepted: 02/19/2018] [Indexed: 01/17/2023]
Abstract
Hypertension accounts for 1 in 5 deaths among American women, posing a greater burden for women than men, and is among their most important risk factors for death and development of cardiovascular and other diseases. Hypertension affects women in all phases of life, with specific characteristics relating to risk factors and management for primary prevention of hypertension in teenage and young adult women; hypertension in pregnancy; hypertension during use of oral contraceptives and assisted reproductive technologies, lactation, menopause, or hormone replacement; hypertension in elderly women; and issues of race and ethnicity. All are detailed in this review, as is information relative to women in clinical trials of hypertension and medication issues. The overarching message is that effective treatment and control of hypertension improves cardiovascular outcomes. But many knowledge gaps persist, including the contribution of hypertensive disorders of pregnancy to cardiovascular disease risk, the role of hormone replacement, blood pressure targets for elderly women, and so on.
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Affiliation(s)
- Nanette K Wenger
- Division of Cardiology, Emory Heart and Vascular Center, Emory University School of Medicine, Atlanta, Georgia
| | - Anita Arnold
- Lee Health System, Florida State University School of Medicine, Fort Myers, Florida
| | - C Noel Bairey Merz
- Barbra Streisand Women's Heart Center, Cedars-Sinai Heart Institute, Los Angeles, California
| | - Rhonda M Cooper-DeHoff
- Department of Pharmacotherapy and Translational Research and Center for Pharmacogenomics, University of Florida, College of Pharmacy, Gainesville, Florida; Division of Cardiovascular Medicine, College of Medicine, University of Florida, Gainesville, Florida
| | - Keith C Ferdinand
- Tulane University Heart and Vascular Institute, Tulane University School of Medicine, New Orleans, Louisiana
| | - Jerome L Fleg
- Division of Cardiovascular Sciences, National Heart, Lung, and Blood Institute, Bethesda, Maryland
| | - Martha Gulati
- Department of Medicine (Cardiology), University of Arizona-Phoenix, Phoenix, Arizona
| | - Ijeoma Isiadinso
- Division of Cardiology, Emory Heart and Vascular Center, Emory University School of Medicine, Atlanta, Georgia
| | - Dipti Itchhaporia
- Jeffrey M. Carlton Heart & Vascular Institute, Hoag Memorial Hospital Presbyterian, Newport Beach, California
| | - KellyAnn Light-McGroary
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Iowa, Iowa City, Iowa
| | - Kathryn J Lindley
- Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Jennifer H Mieres
- Department of Cardiology, Hofstra Northwell School of Medicine, Hempstead, New York
| | - Mary L Rosser
- Division of General Obstetrics & Gynecology and Women's Health, Montefiore Medical Center, Bronx, New York
| | - George R Saade
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Texas Medical Branch, Galveston, Texas
| | - Mary Norine Walsh
- Heart Failure and Cardiac Transplantation Program, St. Vincent Heart Center, Indianapolis, Indiana
| | - Carl J Pepine
- Division of Cardiovascular Medicine, College of Medicine, University of Florida, Gainesville, Florida.
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11
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Liu X, Jiang C, Yang P. Association of single nucleotide polymorphisms in the 5' upstream region of the C4BPA gene with essential hypertension in a northeastern Han Chinese population. Mol Med Rep 2017. [PMID: 28627632 PMCID: PMC5561803 DOI: 10.3892/mmr.2017.6736] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
A previous study of the authors using microarray analysis indicated that the expression of complement component 4 binding protein (C4BP)A is upregulated in essential hypertension (EH) patients, but the association between C4BPA variations and EH has not yet been clearly demonstrated. Since the 5′ upstream region is known to serve important roles in the gene expression regulation, the present study aimed to identify and analyze the association of single nucleotide polymorphisms (SNPs) in the 5′ upstream region between the C4BPA gene with EH in a case-control study among a northeastern Han Chinese population through direct sequencing as well as genotype detection. A total of 822 unrelated participants were included. The higher expression level of C4BPA in the peripheral blood of patients with EH was verified through reverse transcription-quantitative polymerase chain reaction and ELISA. A total of four SNPs, rs73079108, rs74148971, rs77660718 and rs11120211 were identified in the 5′ upstream region of C4BPA. Association analysis demonstrated that the genotypic frequencies of rs73079108 were significantly different between EH and the control groups (P=0.011), and A allelic frequency was lower in EH (P<0.001). Logistic regression analysis indicated that the rs73079108 polymorphism was closely associated with EH (AA:GA:GG genetic model: P=0.007, odds ratio (OR)=0.604, 95% confidence interval (CI) [0.418–0.873]; AA+GA:GG genetic model: P=0.005, OR=0.806, 95% CI[0.382–0.841]), and the A allele may be a protective factor. Subgroup analysis by sex and BMI presented concordant conclusions in female and non-obese samples. Further analysis indicated that rs73079108 was associated with systolic blood pressure (P<0.001), diastolic blood pressure (P=0.001) and fast blood glucose (FBG) (P=0.021). In addition, rs73079108 GA and GG carriers reported a significant increase in the level of the protein encoded by C4BPA than those of AA carriers. The rs73079108 polymorphism in the 5′ upstream region of C4BPA was associated with EH, and rs73079108-A may be an independent predictor.
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Affiliation(s)
- Xueyan Liu
- Department of Cardiology, China‑Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Chao Jiang
- Department of Hepatobiliary Pancreatic Surgery, First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Ping Yang
- Department of Cardiology, China‑Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
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12
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Troger J, Theurl M, Kirchmair R, Pasqua T, Tota B, Angelone T, Cerra MC, Nowosielski Y, Mätzler R, Troger J, Gayen JR, Trudeau V, Corti A, Helle KB. Granin-derived peptides. Prog Neurobiol 2017; 154:37-61. [PMID: 28442394 DOI: 10.1016/j.pneurobio.2017.04.003] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Revised: 04/10/2017] [Accepted: 04/16/2017] [Indexed: 12/14/2022]
Abstract
The granin family comprises altogether 7 different proteins originating from the diffuse neuroendocrine system and elements of the central and peripheral nervous systems. The family is dominated by three uniquely acidic members, namely chromogranin A (CgA), chromogranin B (CgB) and secretogranin II (SgII). Since the late 1980s it has become evident that these proteins are proteolytically processed, intragranularly and/or extracellularly into a range of biologically active peptides; a number of them with regulatory properties of physiological and/or pathophysiological significance. The aim of this comprehensive overview is to provide an up-to-date insight into the distribution and properties of the well established granin-derived peptides and their putative roles in homeostatic regulations. Hence, focus is directed to peptides derived from the three main granins, e.g. to the chromogranin A derived vasostatins, betagranins, pancreastatin and catestatins, the chromogranin B-derived secretolytin and the secretogranin II-derived secretoneurin (SN). In addition, the distribution and properties of the chromogranin A-derived peptides prochromacin, chromofungin, WE14, parastatin, GE-25 and serpinins, the CgB-peptide PE-11 and the SgII-peptides EM66 and manserin will also be commented on. Finally, the opposing effects of the CgA-derived vasostatin-I and catestatin and the SgII-derived peptide SN on the integrity of the vasculature, myocardial contractility, angiogenesis in wound healing, inflammatory conditions and tumors will be discussed.
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Affiliation(s)
- Josef Troger
- Department of Ophthalmology, Medical University of Innsbruck, Innsbruck, Austria.
| | - Markus Theurl
- Department of Internal Medicine, Medical University of Innsbruck, Innsbruck, Austria
| | - Rudolf Kirchmair
- Department of Internal Medicine, Medical University of Innsbruck, Innsbruck, Austria
| | - Teresa Pasqua
- Department of Biology, Ecology and Earth Sciences, University of Calabria, Arcavacata di Rende, Italy
| | - Bruno Tota
- Department of Biology, Ecology and Earth Sciences, University of Calabria, Arcavacata di Rende, Italy
| | - Tommaso Angelone
- Department of Biology, Ecology and Earth Sciences, University of Calabria, Arcavacata di Rende, Italy
| | - Maria C Cerra
- Department of Biology, Ecology and Earth Sciences, University of Calabria, Arcavacata di Rende, Italy
| | - Yvonne Nowosielski
- Department of Ophthalmology, Medical University of Innsbruck, Innsbruck, Austria
| | - Raphaela Mätzler
- Department of Ophthalmology, Medical University of Innsbruck, Innsbruck, Austria
| | - Jasmin Troger
- Department of Ophthalmology, Medical University of Innsbruck, Innsbruck, Austria
| | | | - Vance Trudeau
- Department of Biology, University of Ottawa, Ottawa, Ontario, Canada
| | - Angelo Corti
- Vita-Salute San Raffaele University and Division of Experimental Oncology, San Raffaele Scientific Institute, Milan, Italy
| | - Karen B Helle
- Department of Biomedicine, University of Bergen, Norway
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Wang Y, Bao MH, Zhang QS, Li JM, Tang L. Association of ATP6AP2 Gene Polymorphisms with Essential Hypertension in a South Chinese Han Population. Asian Pac J Cancer Prev 2016; 16:8017-8. [PMID: 26625836 DOI: 10.7314/apjcp.2015.16.17.8017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Yan Wang
- Department of Human Anatomy, Histology and Embryology, Institute of Neuroscience, School of Basic Medical Science, Changsha Medical University, Changsha, China E-mail :
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14
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Yang J, Villar VAM, Armando I, Jose PA, Zeng C. G Protein-Coupled Receptor Kinases: Crucial Regulators of Blood Pressure. J Am Heart Assoc 2016; 5:JAHA.116.003519. [PMID: 27390269 PMCID: PMC5015388 DOI: 10.1161/jaha.116.003519] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Jian Yang
- Department of Nutrition, Daping Hospital, The Third Military Medical University, Chongqing, China Department of Cardiology, Chongqing Key Laboratory for Hypertension, Chongqing Institute of Cardiology, Chongqing Cardiovascular Clinical Research Center, Daping Hospital, The Third Military Medical University, Chongqing, China
| | - Van Anthony M Villar
- Division of Renal Diseases & Hypertension, Department of Medicine, The George Washington University School of Medicine and Health Sciences, Washington, DC
| | - Ines Armando
- Division of Renal Diseases & Hypertension, Department of Medicine, The George Washington University School of Medicine and Health Sciences, Washington, DC
| | - Pedro A Jose
- Division of Renal Diseases & Hypertension, Department of Medicine, The George Washington University School of Medicine and Health Sciences, Washington, DC Department of Pharmacology and Physiology, The George Washington University School of Medicine and Health Sciences, Washington, DC
| | - Chunyu Zeng
- Department of Cardiology, Chongqing Key Laboratory for Hypertension, Chongqing Institute of Cardiology, Chongqing Cardiovascular Clinical Research Center, Daping Hospital, The Third Military Medical University, Chongqing, China
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15
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Affiliation(s)
- Pedro A Jose
- From the Departments of Medicine and Physiology, The George Washington University School of Medicine and Health Sciences, Washington, DC (P.A.J.); Department of Pathology, The University of Virginia, Charlottesville (R.A.F.); Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences and Comparative Medicine Centre, Peking Union Medical College, Beijing, P.R. China (Z.Y.); Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing Institute of Cardiology, Chongqing, P.R. China (C.Z.); and Department of Medicine, Georgetown University Medical Center, Washington, DC (G.M.E.).
| | - Robin A Felder
- From the Departments of Medicine and Physiology, The George Washington University School of Medicine and Health Sciences, Washington, DC (P.A.J.); Department of Pathology, The University of Virginia, Charlottesville (R.A.F.); Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences and Comparative Medicine Centre, Peking Union Medical College, Beijing, P.R. China (Z.Y.); Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing Institute of Cardiology, Chongqing, P.R. China (C.Z.); and Department of Medicine, Georgetown University Medical Center, Washington, DC (G.M.E.)
| | - Zhiwei Yang
- From the Departments of Medicine and Physiology, The George Washington University School of Medicine and Health Sciences, Washington, DC (P.A.J.); Department of Pathology, The University of Virginia, Charlottesville (R.A.F.); Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences and Comparative Medicine Centre, Peking Union Medical College, Beijing, P.R. China (Z.Y.); Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing Institute of Cardiology, Chongqing, P.R. China (C.Z.); and Department of Medicine, Georgetown University Medical Center, Washington, DC (G.M.E.)
| | - Chunyu Zeng
- From the Departments of Medicine and Physiology, The George Washington University School of Medicine and Health Sciences, Washington, DC (P.A.J.); Department of Pathology, The University of Virginia, Charlottesville (R.A.F.); Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences and Comparative Medicine Centre, Peking Union Medical College, Beijing, P.R. China (Z.Y.); Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing Institute of Cardiology, Chongqing, P.R. China (C.Z.); and Department of Medicine, Georgetown University Medical Center, Washington, DC (G.M.E.)
| | - Gilbert M Eisner
- From the Departments of Medicine and Physiology, The George Washington University School of Medicine and Health Sciences, Washington, DC (P.A.J.); Department of Pathology, The University of Virginia, Charlottesville (R.A.F.); Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences and Comparative Medicine Centre, Peking Union Medical College, Beijing, P.R. China (Z.Y.); Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing Institute of Cardiology, Chongqing, P.R. China (C.Z.); and Department of Medicine, Georgetown University Medical Center, Washington, DC (G.M.E.)
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16
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Abstract
PURPOSE OF REVIEW Hypertension, which is present in about one quarter of the world's population, is responsible for about 41% of the number one cause of death - cardiovascular disease. Not included in these statistics is the effect of sodium intake on blood pressure, even though an increase or a marked decrease in sodium intake can increase blood pressure. This review deals with the interaction of gut microbiota and the kidney with genetics and epigenetics in the regulation of blood pressure and salt sensitivity. RECENT FINDINGS The abundance of the gut microbes, Firmicutes and Bacteroidetes, is associated with increased blood pressure in several models of hypertension, including the spontaneously hypertensive and Dahl salt-sensitive rats. Decreasing gut microbiota by antibiotics can increase or decrease blood pressure that is influenced by genotype. The biological function of probiotics may also be a consequence of epigenetic modification, related, in part, to microRNA. Products of the fermentation of nutrients by gut microbiota can influence blood pressure by regulating expenditure of energy, intestinal metabolism of catecholamines, and gastrointestinal and renal ion transport, and thus, salt sensitivity. SUMMARY The beneficial or deleterious effect of gut microbiota on blood pressure is a consequence of several variables, including genetics, epigenetics, lifestyle, and intake of antibiotics. These variables may influence the ultimate level of blood pressure and control of hypertension.
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Xu L, Tang H, El-Naggar AK, Wei P, Sturgis EM. Genetic variants in DNA double-strand break repair genes and risk of salivary gland carcinoma: a case-control study. PLoS One 2015; 10:e0128753. [PMID: 26035306 PMCID: PMC4452711 DOI: 10.1371/journal.pone.0128753] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Accepted: 05/01/2015] [Indexed: 11/19/2022] Open
Abstract
DNA double strand break (DSB) repair is the primary defense mechanism against ionizing radiation-induced DNA damage. Ionizing radiation is the only established risk factor for salivary gland carcinoma (SGC). We hypothesized that genetic variants in DSB repair genes contribute to individual variation in susceptibility to SGC. To test this hypothesis, we conducted a case-control study in which we analyzed 415 single nucleotide polymorphisms (SNPs) in 45 DSB repair genes in 352 SGC cases and 598 controls. Multivariate logistic regression analysis was performed to calculate odds ratios (ORs) and 95% confidence intervals (CIs). Rs3748522 in RAD52 and rs13180356 in XRCC4 were significantly associated with SGC after Bonferroni adjustment; ORs (95% CIs) for the variant alleles of these SNPs were 1.71 (1.40-2.09, P=1.70 × 10-7) and 0.58 (0.45-0.74, P=2.00 × 10-5) respectively. The genetic effects were modulated by histological subtype. The association of RAD52-rs3748522 with SGC was strongest for mucoepidermoid carcinoma (OR=2.21, 95% CI: 1.55-3.15, P=1.25 × 10-5, n=74), and the association of XRCC4-rs13180356 with SGC was strongest for adenoid cystic carcinoma (OR=0.60, 95% CI: 0.42-0.87, P=6.91 × 10-3, n=123). Gene-level association analysis revealed one gene, PRKDC, with a marginally significant association with SGC risk in non-Hispanic whites. To our knowledge, this study is the first to comprehensively evaluate the genetic effect of DSB repair genes on SGC risk. Our results indicate that genetic variants in the DSB repair pathways contribute to inter-individual differences in susceptibility to SGC and show that the impact of genetic variants differs by histological subtype. Independent studies are warranted to confirm these findings.
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Affiliation(s)
- Li Xu
- Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Hongwei Tang
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Adel K. El-Naggar
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Peng Wei
- Division of Biostatistics and Human Genetics Center, School of Public Health, The University of Texas Health Science Center, Houston, Texas, United States of America
| | - Erich M. Sturgis
- Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
- * E-mail:
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18
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Genetic determinants of quantitative traits associated with cardiovascular disease risk. Mutat Res 2015; 778:18-25. [PMID: 26043189 DOI: 10.1016/j.mrfmmm.2015.05.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Revised: 04/30/2015] [Accepted: 05/05/2015] [Indexed: 11/20/2022]
Abstract
Established risk factors for cardiovascular diseases (CVD) may be moderated by genetic variants. In 2403 unrelated individuals from general practice (mean age 40.5 years), we evaluated the influence of 15 variants in 12 candidate genes on quantitative traits (QT) associated with CVD (body mass index, abdominal obesity, glucose, serum lipids, and blood pressure). Prior to multiple testing correction, univariate analysis associated APOE rs429358, rs7412 and ATG16L1 rs2241880 variants with serum lipid levels, while LEPR rs1137100 and ATG16L1 rs2241880 variants were linked to obesity related QTs. After taking into account confounding factors and correcting for multiple comparisons only APOE rs429358 and rs7412 variants remained significantly associated with risk of dyslipidemia. APOE rs429358 variant almost tripled the risk in homozygous subjects (OR = 2.97; 95% CI 1.09-8.10, p < 0.03) and had a lesser but still highly significant association also in heterozygous individuals (OR = 1.67; 95% CI 1.24-2.10; p < 0.001). Associations with hypertension, diabetes mellitus, and metabolic syndrome were not significant after Bonferroni correction. The influence of genetic variation is more evident in dyslipidemia than in other analyzed QTs. These results may contribute to strategic research aimed at including genetic variation in the set of data required to identify subjects at high risk of CVD.
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19
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Yang J, Villar VAM, Jones JE, Jose PA, Zeng C. G protein-coupled receptor kinase 4: role in hypertension. Hypertension 2015; 65:1148-55. [PMID: 25870190 DOI: 10.1161/hypertensionaha.115.05189] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2015] [Accepted: 03/22/2015] [Indexed: 12/15/2022]
Affiliation(s)
- Jian Yang
- From the Departments of Cardiology (J.Y., C.Z.) and Nutrition (J.Y.), Daping Hospital, The Third Military Medical University, Chongqing, People's Republic of China; and Division of Nephrology, Department of Medicine (V.A.M.V., J.E.J., P.A.J.) and Department of Physiology (P.A.J.), University of Maryland School of Medicine, Baltimore
| | - Van Anthony M Villar
- From the Departments of Cardiology (J.Y., C.Z.) and Nutrition (J.Y.), Daping Hospital, The Third Military Medical University, Chongqing, People's Republic of China; and Division of Nephrology, Department of Medicine (V.A.M.V., J.E.J., P.A.J.) and Department of Physiology (P.A.J.), University of Maryland School of Medicine, Baltimore
| | - John E Jones
- From the Departments of Cardiology (J.Y., C.Z.) and Nutrition (J.Y.), Daping Hospital, The Third Military Medical University, Chongqing, People's Republic of China; and Division of Nephrology, Department of Medicine (V.A.M.V., J.E.J., P.A.J.) and Department of Physiology (P.A.J.), University of Maryland School of Medicine, Baltimore
| | - Pedro A Jose
- From the Departments of Cardiology (J.Y., C.Z.) and Nutrition (J.Y.), Daping Hospital, The Third Military Medical University, Chongqing, People's Republic of China; and Division of Nephrology, Department of Medicine (V.A.M.V., J.E.J., P.A.J.) and Department of Physiology (P.A.J.), University of Maryland School of Medicine, Baltimore
| | - Chunyu Zeng
- From the Departments of Cardiology (J.Y., C.Z.) and Nutrition (J.Y.), Daping Hospital, The Third Military Medical University, Chongqing, People's Republic of China; and Division of Nephrology, Department of Medicine (V.A.M.V., J.E.J., P.A.J.) and Department of Physiology (P.A.J.), University of Maryland School of Medicine, Baltimore.
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20
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Mlakar V, Jurkovic Mlakar S, Zupan J, Komadina R, Prezelj J, Marc J. ADRA2A is involved in neuro-endocrine regulation of bone resorption. J Cell Mol Med 2015; 19:1520-9. [PMID: 25818344 PMCID: PMC4511350 DOI: 10.1111/jcmm.12505] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Accepted: 10/28/2014] [Indexed: 12/12/2022] Open
Abstract
Adrenergic stimulation is important for osteoclast differentiation and bone resorption. Previous research shows that this happens through β2-adrenergic receptor (AR), but there are conflicting evidence on presence and role of α2A-AR in bone. The aim of this study was to investigate the presence of α2A-AR and its involvement in neuro-endocrine signalling of bone remodelling in humans. Real-time polymerase chain reaction (PCR) and immunohistochemistry were used to investigate α2A-AR receptor presence and localization in bone cells. Functionality of rs553668 and rs1800544 single nucleotide polymorphism SNPs located in α2A-AR gene was analysed by qPCR expression on bone samples and luciferase reporter assay in human osteosarcoma HOS cells. Using real-time PCR, genetic association study between rs553668 A>G and rs1800544 C>G SNPs and major bone markers was performed on 661 Slovenian patients with osteoporosis. α2A-AR is expressed in osteoblasts and lining cells but not in osteocytes. SNP rs553668 has a significant influence on α2A-AR mRNA level in human bone samples through the stability of mRNA. α2A-AR gene locus associates with important bone remodelling markers (BMD, CTX, Cathepsin K and pOC). The results of this study are providing comprehensive new evidence that α2A-AR is involved in neuro-endocrine signalling of bone turnover and development of osteoporosis. As shown by our results the neurological signalling is mediated through osteoblasts and result in bone resorption. Genetic study showed association of SNPs in α2A-AR gene locus with bone remodelling markers, identifying the individuals with higher risk of development of osteoporosis.
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Affiliation(s)
- Vid Mlakar
- Department of Clinical Biochemistry, Faculty of Pharmacy, University of Ljubljana, Ljubljana, Slovenia
| | - Simona Jurkovic Mlakar
- Department of Clinical Biochemistry, Faculty of Pharmacy, University of Ljubljana, Ljubljana, Slovenia
| | - Janja Zupan
- Department of Clinical Biochemistry, Faculty of Pharmacy, University of Ljubljana, Ljubljana, Slovenia
| | - Radko Komadina
- Department for Research and Education, General and Teaching Hospital Celje, Celje, Slovenia
| | - Janez Prezelj
- Department of Endocrinology, Diabetes and Metabolic Diseases, University Medical Centre Ljubljana, Ljubljana, Slovenia
| | - Janja Marc
- Department of Clinical Biochemistry, Faculty of Pharmacy, University of Ljubljana, Ljubljana, Slovenia
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Duru KC, Noble JA, Guindo A, Yi L, Imumorin IG, Diallo DA, Thomas BN. Extensive genomic variability of knops blood group polymorphisms is associated with sickle cell disease in Africa. Evol Bioinform Online 2015; 11:25-33. [PMID: 25788827 PMCID: PMC4357628 DOI: 10.4137/ebo.s23132] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Revised: 01/27/2015] [Accepted: 02/02/2015] [Indexed: 01/21/2023] Open
Abstract
Sickle cell disease (SCD) is a multisystem disorder characterized by chronic hemolytic anemia, vaso-occlusive crises, and marked variability in disease severity. Patients require transfusions to manage disease complications, with complements, directed by complement regulatory genes (CR1) and its polymorphisms, implicated in the development of alloantibodies. We hypothesize that CR1 polymorphisms affect complement regulation and function, leading to adverse outcome in SCD. To this end, we determined the genomic diversity of complement regulatory genes by examining single nucleotide polymorphisms associated with Knops blood group antigens. Genomic DNA samples from 130 SCD cases and 356 control Africans, 331 SCD cases and 497 control African Americans, and 254 Caucasians were obtained and analyzed, utilizing a PCR-RFLP (polymerase chain reaction-restriction fragment length polymorphism) assay. Analyzing for ethnic diversity, we found significant differences in the genotypic and allelic frequencies of Sl1/Sl2 (rs17047661) and McCa/b (rs17047660) polymorphisms between Africans, African Americans, and Caucasians (P < 0.05). The homozygote mutant variants had significantly higher frequencies in Africans and African Americans but were insignificant in Caucasians (80.2% and 59.6% vs 5.9% for Sl1/2; and 36% and 24% vs 1.8% for McCa/b). With SCD, we did not detect any difference among cases and controls either in Africa or in the United States. However, we found significant difference in genotypic (P < 0.0001) and allelic frequencies (P < 0.0001) of Sl1/Sl2 (rs17047661) and McCa/b (rs17047660) polymorphisms between SCD groups from Africa and the United States. There was no difference in haplotype frequencies of these polymorphisms among or between groups. The higher frequency of CR1 homozygote mutant variants in Africa but not United States indicates a potential pathogenic role, possibly associated with complicated disease pathophysiology in the former and potentially protective in the latter. The difference between sickle cell groups suggests potential genetic drift or founder effect imposed on the disease in the United States, but not in Africa, and a possible confirmation of the ancestral susceptibility hypothesis. The lower haplotype frequencies among sickle cell and control populations in the United States may be due to the admixture and the dilution of African genetic ancestry in the African American population.
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Affiliation(s)
- Kimberley C Duru
- Department of Biomedical Sciences, College of Health Sciences and Technology, Rochester Institute of Technology, Rochester, NY, USA
| | - Jenelle A Noble
- Department of Biomedical Sciences, College of Health Sciences and Technology, Rochester Institute of Technology, Rochester, NY, USA
| | - Aldiouma Guindo
- Centre de Recherche et de Lutte contre la Drepanocytose (CRLD), Bamako, Mali
| | - Li Yi
- School of Statistics, Shanxi University of Finance and Economics, Shanxi, China
| | - Ikhide G Imumorin
- Animal Genetics and Genomics Lab, Office of International Programs, College of Agriculture and Life Sciences, Cornell University, Ithaca, NY, USA
| | - Dapa A Diallo
- Centre de Recherche et de Lutte contre la Drepanocytose (CRLD), Bamako, Mali
| | - Bolaji N Thomas
- Department of Biomedical Sciences, College of Health Sciences and Technology, Rochester Institute of Technology, Rochester, NY, USA
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22
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Common variants of the G protein-coupled receptor type 4 are associated with human essential hypertension and predict the blood pressure response to angiotensin receptor blockade. THE PHARMACOGENOMICS JOURNAL 2015; 16:3-9. [PMID: 25732908 DOI: 10.1038/tpj.2015.6] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Accepted: 12/19/2014] [Indexed: 12/13/2022]
Abstract
Non-synonymous GRK4 variants, R65L, A142V and A486V, are associated with essential hypertension in diverse populations. This study replicated the association of GRK4 variants, including GRK4(142V), with human essential hypertension in a Japanese population (n=588; hypertensive, n=486 normotensive controls) and determined whether the presence of GRK4 variants predicted the blood pressure (BP) response to angiotensin receptor blockers (ARBs) in patients with essential hypertension. We analyzed 829 patients and compared the response to ARBs between individuals with no GRK4 variants (n=136) and those with variants at one or any of the three loci (n=693). Carriers of hGRK4(142V) had a greater decrease in systolic BP in response to ARBs than non-carrier hypertensive patients. By contrast, those with variants only at GRK4(486V) were less likely to achieve the BP goal in response to an ARB than those with no variants. These studies showed for the first time the association between GRK4(142V) and a larger decrease in BP with ARBs in hypertensive patients.
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23
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Kumar R, Kohli S, Mishra A, Garg R, Alam P, Stobdan T, Nejatizadeh A, Gupta M, Tyagi S, Pasha MAQ. Interactions between the genes of vasodilatation pathways influence blood pressure and nitric oxide level in hypertension. Am J Hypertens 2015; 28:239-47. [PMID: 25159081 DOI: 10.1093/ajh/hpu130] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND This study investigates the contribution of genetic interactions between the β-2 adrenergic receptor (ADRB2) and nitric oxide synthase (NOS3) genes to the complex etiology of hypertension. METHODS Using single nucleotide polymorphism (SNP) markers, we studied potential interactions between ADRB2 and NOS3 variants and their correlation with clinical, biochemical, and expression levels in 546 individuals with hypertension and 884 age-, sex-, and ethnicity-matched unrelated control subjects. Generalized multifactor dimensionality reduction (GMDR) analysis identified the models for genotype interaction. RESULTS The best models to represent association of genotypes with augmented hypertension susceptibility were the 4- and 5-locus interacting GMDR models of ADRB2 and NOS3 compared with within-gene 6-locus ADRB2 and 2-locus NOS3 (odds ratio (OR) = 4.8, P = 0.04; OR = 5.6, P = 0.02, respectively). Stratification of 4- and 5-locus GMDR models on the basis of risk alleles (in increasing order) increased the ORs from 1.26 to 14.17 and from 0.81 to 14.18, respectively, and correlated linearly with increased systolic blood pressure, diastolic blood pressure, and mean arterial pressure and decreased nitric oxide level (P ≤ 0.0004). We performed various analyses, such as single-locus, genetic interactions, sliding-window, and comparative analysis. Each analysis consistently revealed the 46A allele of ADRB2 46G/A SNP and 4a allele of NOS3 4b/4a SNP to be associated with risk of hypertension. These risk-conferring markers were associated with decreased ADRB2 and NOS3 expression and decreased nitric oxide level in the patients (P ≤ 0.04). CONCLUSIONS Evidence of interaction between the genetic loci of ADRB2 and NOS3 points to varied clinical, biochemical, and expression levels and a role in hypertension susceptibility.
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Affiliation(s)
- Rahul Kumar
- Functional Genomics Unit, CSIR-Institute of Genomics and Integrative Biology, Delhi, India; Present address: Division of Pulmonary Sciences and Critical Care Medicine, School of Medicine, University of Colorado, Denver, Colorado (R.K.); Department of Pediatrics, Division of Respiratory Medicine, University of California San Diego, La Jolla, California (T.S.); Research Center for Molecular Medicine, Hormozgan University of Medical Sciences, Bandar Abbas, Iran (A.N.)
| | - Samantha Kohli
- Functional Genomics Unit, CSIR-Institute of Genomics and Integrative Biology, Delhi, India; Academy of Scientific and Innovative Research, New Delhi, India
| | - Aastha Mishra
- Functional Genomics Unit, CSIR-Institute of Genomics and Integrative Biology, Delhi, India
| | - Ritu Garg
- Functional Genomics Unit, CSIR-Institute of Genomics and Integrative Biology, Delhi, India
| | - Perwez Alam
- Functional Genomics Unit, CSIR-Institute of Genomics and Integrative Biology, Delhi, India
| | - Tsering Stobdan
- Functional Genomics Unit, CSIR-Institute of Genomics and Integrative Biology, Delhi, India; Present address: Division of Pulmonary Sciences and Critical Care Medicine, School of Medicine, University of Colorado, Denver, Colorado (R.K.); Department of Pediatrics, Division of Respiratory Medicine, University of California San Diego, La Jolla, California (T.S.); Research Center for Molecular Medicine, Hormozgan University of Medical Sciences, Bandar Abbas, Iran (A.N.)
| | - Azim Nejatizadeh
- Functional Genomics Unit, CSIR-Institute of Genomics and Integrative Biology, Delhi, India; Present address: Division of Pulmonary Sciences and Critical Care Medicine, School of Medicine, University of Colorado, Denver, Colorado (R.K.); Department of Pediatrics, Division of Respiratory Medicine, University of California San Diego, La Jolla, California (T.S.); Research Center for Molecular Medicine, Hormozgan University of Medical Sciences, Bandar Abbas, Iran (A.N.)
| | - Mohit Gupta
- Department of Cardiology, Govind Ballabh Pant Hospital, New Delhi, India
| | - Sanjay Tyagi
- Department of Cardiology, Govind Ballabh Pant Hospital, New Delhi, India
| | - M A Qadar Pasha
- Functional Genomics Unit, CSIR-Institute of Genomics and Integrative Biology, Delhi, India; Academy of Scientific and Innovative Research, New Delhi, India;
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Gooren LJ, Kreukels B, Lapauw B, Giltay EJ. (Patho)physiology of cross-sex hormone administration to transsexual people: the potential impact of male-female genetic differences. Andrologia 2014; 47:5-19. [PMID: 25495275 DOI: 10.1111/and.12389] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/11/2014] [Indexed: 12/11/2022] Open
Abstract
There is a limited body of knowledge of desired and undesired effects of cross-sex hormones in transsexual people. Little attention has been given to the fact that chromosomal configurations, 46,XY in male-to-female transsexuals subjects (MtoF) and 46,XX in female-to-male transsexual subjects (FtoM), obviously, remain unchanged. These differences in their genomes cause sex differences in the functions of cells. This study reviews sex differences in metabolism/cardiovascular pathology, immune mechanisms, bone (patho)physiology and brain functions and examines whether they are, maybe partially, determined by genetic mechanisms rather than by (cross-sex) hormones. There do not appear to be major genetic impacts on the changes in bone physiology. Also immune functions are rather unaffected and the evidence for an increase of autoimmune disease in MtoF is preliminary. Brain functions of transsexuals may have differed from controls before cross-sex hormones; they do undergo shifts upon cross-sex hormone treatment, but there is no evidence for changes in sex-specific brain disease. The prevalence of cardiovascular disease is higher in MtoF receiving oestrogens than in FtoM receiving androgens. While type of oestrogen and route of administration might be significant, it is reasonable to speculate that nonhormonal/genetic factors play a role.
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Affiliation(s)
- L J Gooren
- Emeritus VU Medical Center, Amsterdam, The Netherlands; Androconsult, Chiang Mai, Thailand
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Rana BK, Darst BF, Bloss C, Shih PAB, Depp C, Nievergelt CM, Allison M, Parsons JK, Schork N, Jeste DV. Candidate SNP associations of optimism and resilience in older adults: exploratory study of 935 community-dwelling adults. Am J Geriatr Psychiatry 2014; 22:997-1006.e5. [PMID: 24791650 PMCID: PMC4163500 DOI: 10.1016/j.jagp.2014.03.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Revised: 03/19/2014] [Accepted: 03/20/2014] [Indexed: 10/25/2022]
Abstract
OBJECTIVE Optimism and resilience promote health and well-being in older adults, and previous reports suggest that these traits are heritable. We examined the association of selected single-nucleotide polymorphisms (SNPs) with optimism and resilience in older adults. DESIGN Candidate gene association study that was a follow-on at the University of California, San Diego, sites of two NIH-funded multi-site longitudinal investigations: Women's Health Initiative (WHI) and SELenium and vitamin E Cancer prevention Trial (SELECT). PARTICIPANTS 426 women from WHI older than age 50 years, and 509 men older than age 55 years (age 50 years for African American men) from SELECT. MEASUREMENTS 65 candidate gene SNPs that were judged by consensus, based on a literature review, as being related to predisposition to optimism and resilience, and 31 ancestry informative marker SNPs, genotyped from blood-based DNA samples and self-report scales for trait optimism, resilience, and depressive symptoms. RESULTS Using a Bonferroni threshold for significant association (p = 0.00089), there were no significant associations for individual SNPs with optimism or resilience in single-locus analyses. Exploratory multi-locus polygenic analyses with p <0.05 showed an association of optimism with SNPs in MAOA, IL10, and FGG genes, and an association of resilience with a SNP in MAOA gene. CONCLUSIONS Correcting for Type I errors, there were no significant associations of optimism and resilience with specific gene SNPs in single-locus analyses. Positive psychological traits are likely to be genetically complex, with many loci having small effects contributing to phenotypic variation. Our exploratory multi-locus polygenic analyses suggest that larger sample sizes and complementary approaches involving methods such as sequence-based association studies, copy number variation analyses, and pathway-based analyses could be useful for better understanding the genetic basis of these positive psychological traits.
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Affiliation(s)
- Brinda K Rana
- Sam and Rose Stein Institute for Research on Aging, and Department of Psychiatry, University of California, San Diego, CA
| | - Burcu F Darst
- Scripps Translational Science Institute, Scripps Genomic Medicine, Scripps Health, La Jolla, CA
| | - Cinnamon Bloss
- Scripps Translational Science Institute, Scripps Genomic Medicine, Scripps Health, La Jolla, CA
| | - Pei-An Betty Shih
- Sam and Rose Stein Institute for Research on Aging, and Department of Psychiatry, University of California, San Diego, CA
| | - Colin Depp
- Sam and Rose Stein Institute for Research on Aging, and Department of Psychiatry, University of California, San Diego, CA; Veterans Affairs San Diego Healthcare System, San Diego, CA
| | - Caroline M Nievergelt
- Sam and Rose Stein Institute for Research on Aging, and Department of Psychiatry, University of California, San Diego, CA
| | - Matthew Allison
- Department of Family and Preventive Medicine, University of California, San Diego, CA
| | - J Kellogg Parsons
- Department of Surgery, Division of Urologic Oncology, University of California, San Diego, CA
| | | | - Dilip V Jeste
- Sam and Rose Stein Institute for Research on Aging, and Department of Psychiatry, University of California, San Diego, CA.
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Wang L, Zhang B, Li M, Li C, Liu J, Liu Y, Wang Z, Zhou J, Wen S. Association between single-nucleotide polymorphisms in six hypertensive candidate genes and hypertension among northern Han Chinese individuals. Hypertens Res 2014; 37:1068-74. [PMID: 25099490 DOI: 10.1038/hr.2014.124] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2013] [Revised: 05/20/2014] [Accepted: 06/06/2014] [Indexed: 11/10/2022]
Abstract
Hypertension is one of the leading risk factors for mortality. The renin-angiotensin-aldosterone system (RAAS) is a potent and powerful mediator in the homeostasis of hypertension. Here, the association between six candidate genes, renin, adrenoceptor β3, angiotensinogen, aldosterone synthase, angiotensin II receptor type 1 and angiotensin II receptor type 2, that are related to RAAS and essential hypertension (EH) was evaluated and explored in northern Chinese Han individuals. A case-control study including 1090 EH cases and 700 controls was performed. Eight single-nucleotide polymorphisms (SNPs), rs699, rs4762, rs5707, rs5186, rs4994, rs1799998, rs5193 and rs5194, located in the six genes were genotyped with TaqMan real-time PCR method. Statistical analysis software (SPSS 17.0) was used for descriptive statistics and association analyses. Among the six genes related to RAAS, the frequencies of rs4994 (ADRB3) and rs5194 (AGTR2) were found to be significantly different between the EH cases and controls (P < 0.05). Logistic regression analyses adjusted for covariates showed rs4994 to be closely associated with EH under the recessive (P = 0.019, odds ratio (OR) = 0.373, 95% confidence interval (CI) 0.163-0.851) and homozygous (P = 0.028, OR = 0.394, 95% CI 0.172-0.903) models. The association was also significantly close in the male subset (P < 0.05). Significant association was also observed between rs1799998 (CYP11B2) and EH (P < 0.05) in the dominant, additive and allelic models. These data demonstrated that ADRB3 rs4994 and CYP11B2 rs1799998 were significantly closely associated with EH in northern Han Chinese individuals. The CC of rs4994 and CC or C allele of rs1799998 might be protective genetic factors of hypertension.
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Affiliation(s)
- Lijuan Wang
- Beijing Anzhen Hospital, Capital Medical University and Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing, People's Republic of China
| | - Bei Zhang
- Beijing Anzhen Hospital, Capital Medical University and Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing, People's Republic of China
| | - Mei Li
- Beijing Anzhen Hospital, Capital Medical University and Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing, People's Republic of China
| | - Chuang Li
- Beijing Anzhen Hospital, Capital Medical University and Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing, People's Republic of China
| | - Jielin Liu
- Beijing Anzhen Hospital, Capital Medical University and Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing, People's Republic of China
| | - Ya Liu
- Beijing Anzhen Hospital, Capital Medical University and Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing, People's Republic of China
| | - Zuoguang Wang
- Beijing Anzhen Hospital, Capital Medical University and Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing, People's Republic of China
| | - Jiapeng Zhou
- Beijing Computing Center, Beijing Academy of Science and Technology, Beijing, China
| | - Shaojun Wen
- Beijing Anzhen Hospital, Capital Medical University and Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing, People's Republic of China
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Park SY, Lee HJ, Ji SM, Kim ME, Jigden B, Lim JE, Oh B. ANTXR2 is a potential causative gene in the genome-wide association study of the blood pressure locus 4q21. Hypertens Res 2014; 37:811-7. [PMID: 24739539 DOI: 10.1038/hr.2014.84] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Revised: 03/04/2014] [Accepted: 03/06/2014] [Indexed: 01/11/2023]
Abstract
Hypertension is the most prevalent cardiovascular disease worldwide, but its genetic basis is poorly understood. Recently, genome-wide association studies identified 33 genetic loci that are associated with blood pressure. However, it has been difficult to determine whether these loci are causative owing to the lack of functional analyses. Of these 33 genome-wide association studies (GWAS) loci, the 4q21 locus, known as the fibroblast growth factor 5 (FGF5) locus, has been linked to blood pressure in Asians and Europeans. Using a mouse model, we aimed to identify a causative gene in the 4q21 locus, in which four genes (anthrax toxin receptor 2 (ANTXR2), PR domain-containing 8 (PRDM8), FGF5 and chromosome 4 open reading frame 22 (C4orf22)) were near the lead single-nucleotide polymorphism (rs16998073). Initially, we examined Fgf5 gene by measuring blood pressure in Fgf5-knockout mice. However, blood pressure did not differ between Fgf5 knockout and wild-type mice. Therefore, the other candidate genes were studied by in vivo small interfering RNA (siRNA) silencing in mice. Antxr2 siRNA was pretreated with polyethylenimine and injected into mouse tail veins, causing a significant decrease in Antxr2 mRNA by 22% in the heart. Moreover, blood pressure measured under anesthesia in Antxr2 siRNA-injected mice rose significantly compared with that of the controls. These results suggest that ANTXR2 is a causative gene in the human 4q21 GWAS-blood pressure locus. Additional functional studies of ANTXR2 in blood pressure may identify a novel genetic pathway, thus increasing our understanding of the etiology of essential hypertension.
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Affiliation(s)
- So Yon Park
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul, Korea
| | - Hyeon-Ju Lee
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul, Korea
| | - Su-Min Ji
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul, Korea
| | - Marina E Kim
- Department of Medicine, Graduate School, Kyung Hee University, Seoul, Korea
| | - Baigalmaa Jigden
- Department of Biomedical Engineering, School of Medicine, Kyung Hee University, Seoul, Korea
| | - Ji Eun Lim
- Department of Biomedical Engineering, School of Medicine, Kyung Hee University, Seoul, Korea
| | - Bermseok Oh
- 1] Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul, Korea [2] Department of Medicine, Graduate School, Kyung Hee University, Seoul, Korea [3] Department of Biomedical Engineering, School of Medicine, Kyung Hee University, Seoul, Korea
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Zhang K, Huentelman MJ, Rao F, Sun EI, Corneveaux JJ, Schork AJ, Wei Z, Waalen J, Miramontes-Gonzalez JP, Hightower CM, Maihofer AX, Mahata M, Pastinen T, Ehret GB, Schork NJ, Eskin E, Nievergelt CM, Saier MH, O'Connor DT. Genetic implication of a novel thiamine transporter in human hypertension. J Am Coll Cardiol 2014; 63:1542-55. [PMID: 24509276 DOI: 10.1016/j.jacc.2014.01.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2013] [Revised: 12/29/2013] [Accepted: 01/07/2014] [Indexed: 12/27/2022]
Abstract
OBJECTIVES This study coupled 2 strategies-trait extremes and genome-wide pooling-to discover a novel blood pressure (BP) locus that encodes a previously uncharacterized thiamine transporter. BACKGROUND Hypertension is a heritable trait that remains the most potent and widespread cardiovascular risk factor, although details of its genetic determination are poorly understood. METHODS Representative genomic deoxyribonucleic acid (DNA) pools were created from male and female subjects in the highest- and lowest-fifth percentiles of BP in a primary care population of >50,000 patients. The peak associated single-nucleotide polymorphisms were typed in individual DNA samples, as well as in twins/siblings phenotyped for cardiovascular and autonomic traits. Biochemical properties of the associated transporter were evaluated in cellular assays. RESULTS After chip hybridization and calculation of relative allele scores, the peak associations were typed in individual samples, revealing an association between hypertension, systolic BP, and diastolic BP and the previously uncharacterized solute carrier SLC35F3. The BP genetic association at SLC35F3 was validated by meta-analysis in an independent sample from the original source population, as well as the International Consortium for Blood Pressure Genome-Wide Association Studies (across North America and western Europe). Sequence homology to a putative yeast thiamine (vitamin B1) transporter prompted us to express human SLC35F3 in Escherichia coli, which catalyzed [(3)H]-thiamine uptake. SLC35F3 risk-allele homozygotes (T/T) displayed decreased erythrocyte thiamine content on microbiological assay. In twin pairs, the SLC35F3 risk allele predicted heritable cardiovascular traits previously associated with thiamine deficiency, including elevated cardiac stroke volume with decreased vascular resistance, and elevated pressor responses to environmental (cold) stress. Allelic expression imbalance confirmed that cis variation at the human SLC35F3 locus influenced expression of that gene, and the allelic expression imbalance peak coincided with the hypertension peak. CONCLUSIONS Novel strategies were coupled to position a new hypertension-susceptibility locus, uncovering a previously unsuspected thiamine transporter whose genetic variants predicted several disturbances in cardiac and autonomic function. The results have implications for the pathogenesis and treatment of systemic hypertension.
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Affiliation(s)
- Kuixing Zhang
- Department of Medicine, University of California at San Diego (UCSD), La Jolla, California
| | - Matthew J Huentelman
- Division of Neurogenomics, Translational Genomics Research Institute, Phoenix, Arizona
| | - Fangwen Rao
- Department of Medicine, University of California at San Diego (UCSD), La Jolla, California
| | - Eric I Sun
- Department of Biology, UCSD, La Jolla, California
| | - Jason J Corneveaux
- Division of Neurogenomics, Translational Genomics Research Institute, Phoenix, Arizona
| | - Andrew J Schork
- Department of Medicine, University of California at San Diego (UCSD), La Jolla, California
| | - Zhiyun Wei
- Department of Medicine, University of California at San Diego (UCSD), La Jolla, California
| | - Jill Waalen
- Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, California
| | | | - C Makena Hightower
- Department of Medicine, University of California at San Diego (UCSD), La Jolla, California
| | - Adam X Maihofer
- Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, California; Departments of Human and Medical Genetics, McGill University and Génome Québec Innovation Centre, Montréal, Québec, Canada
| | - Manjula Mahata
- Department of Medicine, University of California at San Diego (UCSD), La Jolla, California
| | - Tomi Pastinen
- Departments of Human and Medical Genetics, McGill University and Génome Québec Innovation Centre, Montréal, Québec, Canada
| | - Georg B Ehret
- Center for Complex Disease Genomics, McKusick-Nathans, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | | | - Nicholas J Schork
- Department of Psychiatry, UCSD, La Jolla, California; Departments of Computer Science and Human Genetics, University of California at Los Angeles, Los Angeles, California
| | - Eleazar Eskin
- Departments of Human and Medical Genetics, McGill University and Génome Québec Innovation Centre, Montréal, Québec, Canada
| | - Caroline M Nievergelt
- Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, California; Departments of Human and Medical Genetics, McGill University and Génome Québec Innovation Centre, Montréal, Québec, Canada
| | | | - Daniel T O'Connor
- Department of Medicine, University of California at San Diego (UCSD), La Jolla, California; Veterans Affairs San Diego Healthcare System, San Diego, California; Department of Pharmacology and the Institute for Genomic Medicine, UCSD, La Jolla, California.
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Yoshikawa T, Kanazawa H, Fujimoto S, Hirata K. Epistatic effects of multiple receptor genes on pathophysiology of asthma - its limits and potential for clinical application. Med Sci Monit 2014; 20:64-71. [PMID: 24435185 PMCID: PMC3907491 DOI: 10.12659/msm.889754] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2013] [Accepted: 11/09/2013] [Indexed: 01/31/2023] Open
Abstract
To date, genome-wide association studies (GWAS) permit a comprehensive scan of the genome in an unbiased manner, with high sensitivity, and thereby have the potential to identify candidate genes for the prevalence or development of multifactorial diseases such as bronchial asthma. However, most studies have only managed to explain a small additional percentage of hereditability estimates, and often fail to show consistent results among studies despite large sample sizes. Epistasis is defined as the interaction between multiple different genes affecting phenotypes. By applying epistatic analysis to clinical genetic research, we can analyze interactions among more than 2 molecules (genes) considering the whole system of the human body, illuminating dynamic molecular mechanisms. An increasing number of genetic studies have investigated epistatic effects on the risk for development of asthma. The present review highlights a concept of epistasis to overcome traditional genetic studies in humans and provides an update of evidence on epistatic effects on asthma. Furthermore, we review concerns regarding recent trends in epistatic analyses from the perspective of clinical physicians. These concerns include biological plausibility of genes identified by computational statistics, and definition of the diagnostic label of 'physician-diagnosed asthma'. In terms of these issues, further application of epistatic analysis will prompt identification of susceptibility of diseases and lead to the development of a new generation of pharmacological strategies to treat asthma.
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Affiliation(s)
- Takahiro Yoshikawa
- Department of Sports Medicine, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Hiroshi Kanazawa
- Department of Respiratory Medicine, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Shigeo Fujimoto
- Department of Sports Medicine, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Kazuto Hirata
- Department of Respiratory Medicine, Osaka City University Graduate School of Medicine, Osaka, Japan
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30
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Pasha DN, Davis JT, Rao F, Chen Y, Wen G, Fung MM, Mahata M, Zhang K, Trzebinska D, Mustapic M, Hightower CM, Lipkowitz MS, Ji M, Ziegler MG, Nievergelt CM, O'Connor DT. Heritable influence of DBH on adrenergic and renal function: twin and disease studies. PLoS One 2013; 8:e82956. [PMID: 24391727 PMCID: PMC3876991 DOI: 10.1371/journal.pone.0082956] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Accepted: 10/29/2013] [Indexed: 01/13/2023] Open
Abstract
Background Elevated sympathetic activity is associated with kidney dysfunction. Here we used twin pairs to probe heritability of GFR and its genetic covariance with other traits. Methods We evaluated renal and adrenergic phenotypes in twins. GFR was estimated by CKD-EPI algorithm. Heritability and genetic covariance of eGFR and associated risk traits were estimated by variance-components. Meta-analysis probed reproducibility of DBH genetic effects. Effect of DBH genetic variation on renal disease was tested in the NIDDK-AASK cohort. Results Norepinephrine secretion rose across eGFR tertiles while eGFR fell (p<0.0001). eGFR was heritable, at h2 = 67.3±4.7% (p = 3.0E-18), as were secretion of norepinephrine (h2 = 66.5±5.0%, p = 3.2E-16) and dopamine (h2 = 56.5±5.6%, p = 1.8E-13), and eGFR displayed genetic co-determination (covariance) with norepinephrine (ρG = −0.557±0.088, p = 1.11E-08) as well as dopamine (ρG = −0.223±0.101, p = 2.3E-02). Since dopamine β-hydroxylase (DBH) catalyzes conversion of dopamine to norepinephrine, we studied functional variation at DBH; DBH promoter haplotypes predicted transcriptional activity (p<0.001), plasma DBH (p<0.0001) and norepinephrine (p = 0.0297) secretion; transcriptional activity was inversely (p<0.0001) associated with basal eGFR. Meta-analysis validated DBH haplotype effects on eGFR across 3 samples. In NIDDK-AASK, we established a role for DBH promoter variation in long-term renal decline rate (GFR slope, p = 0.003). Conclusions The heritable GFR trait shares genetic determination with catecholamines, suggesting new pathophysiologic, diagnostic and therapeutic approaches towards disorders of GFR as well as CKD. Adrenergic activity may play a role in progressive renal decline, and genetic variation at DBH may assist in profiling subjects for rational preventive treatment.
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Affiliation(s)
- Dalal N. Pasha
- Department of Medicine, University of California at San Diego, La Jolla, California, United States of America
| | - Jason T. Davis
- Department of Medicine, University of California at San Diego, La Jolla, California, United States of America
| | - Fangwen Rao
- Department of Medicine, University of California at San Diego, La Jolla, California, United States of America
| | - Yuqing Chen
- Department of Medicine, University of California at San Diego, La Jolla, California, United States of America
| | - Gen Wen
- Department of Medicine, University of California at San Diego, La Jolla, California, United States of America
| | - Maple M. Fung
- Department of Medicine, University of California at San Diego, La Jolla, California, United States of America
| | - Manjula Mahata
- Department of Medicine, University of California at San Diego, La Jolla, California, United States of America
| | - Kuixing Zhang
- Department of Medicine, University of California at San Diego, La Jolla, California, United States of America
| | - Danuta Trzebinska
- Department of Medicine, University of California at San Diego, La Jolla, California, United States of America
| | - Maja Mustapic
- Department of Medicine, University of California at San Diego, La Jolla, California, United States of America
| | - C. Makena Hightower
- Department of Medicine, University of California at San Diego, La Jolla, California, United States of America
| | - Michael S. Lipkowitz
- Department of Medicine, Georgetown University, Washington, District of Columbia, United States of America
| | - Ming Ji
- Graduate School of Public Health, Division of Epidemiology and Biostatistics, San Diego State University, San Diego, California, United States of America
| | - Michael G. Ziegler
- Department of Medicine, University of California at San Diego, La Jolla, California, United States of America
| | - Caroline M. Nievergelt
- Department of Psychiatry, University of California at San Diego, La Jolla, California, United States of America
| | - Daniel T. O'Connor
- Department of Medicine, University of California at San Diego, La Jolla, California, United States of America
- Department of Pharmacology, University of California at San Diego, La Jolla, California, United States of America
- Veterans Affairs San Diego Healthcare System, La Jolla, California, United States of America
- * E-mail:
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31
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Ossou-Nguiet PM, Gombet TR, Ossil Ampion M, Otiobanda GF, Obondzo-Aloba K, Bandzouzi-Ndamba B. [Gender and stroke in Brazzaville]. Rev Epidemiol Sante Publique 2013; 62:78-82. [PMID: 24387863 DOI: 10.1016/j.respe.2013.09.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2013] [Revised: 09/05/2013] [Accepted: 09/12/2013] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND The relationship between gender and cerebrovascular disease is controversial. The aim of our study was to evaluate the relationship between gender and vascular risk factors, biological variables and the severity of the neurological deficit in stroke. METHODS This cross-sectional study, conducted from March to August 2011 in the department of neurology of the university hospital of Brazzaville which included all patients hospitalized for confirmed stroke. The study variables were: age, sex, vascular risk factors, NIHSS scores and Glasgow, blood pressure, and the biological exams and complications. Statistical analysis was performed on SPSS12. RESULTS Eighty patients were included. The mean age was 62.7 ± 11.2 years, with 58.8% of men. Alcohol intake and smoking were more frequent in men than women respectively P=0.005 and P=0.032. Psychosocial stress was more often declared by women than men (P=0.042). However there was no significant difference in biological variables, the severity of stroke and the occurrence of complications CONCLUSION Our study suggests that in the Congolese context, gender does not influence significantly most parameters during stroke, but men consume more alcohol and women are exposed to psychosocial stress.
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Affiliation(s)
- P M Ossou-Nguiet
- Service de neurologie, CHU de Brazzaville, Brazzaville, Congo; Département de médecine, faculté des sciences de la santé de Brazzaville, Brazzaville, Congo.
| | - T R Gombet
- Département de médecine, faculté des sciences de la santé de Brazzaville, Brazzaville, Congo; Service des urgences, CHU de Brazzaville, Brazzaville, Congo
| | - M Ossil Ampion
- Service de néphrologie, CHU de Brazzaville, Brazzaville, Congo
| | - G F Otiobanda
- Service de réanimation polyvalente, CHU de Brazzaville, Brazzaville, Congo
| | - K Obondzo-Aloba
- Service de neurologie, CHU de Brazzaville, Brazzaville, Congo
| | - B Bandzouzi-Ndamba
- Service de neurologie, CHU de Brazzaville, Brazzaville, Congo; Département de médecine, faculté des sciences de la santé de Brazzaville, Brazzaville, Congo
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Patnaik M, Pati P, Swain SN, Mohapatra MK, Dwibedi B, Kar SK, Ranjit M. Association of angiotensin-converting enzyme and angiotensin-converting enzyme-2 gene polymorphisms with essential hypertension in the population of Odisha, India. Ann Hum Biol 2013; 41:145-52. [PMID: 24112034 DOI: 10.3109/03014460.2013.837195] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND Hypertension is a serious health issue worldwide and essential hypertension, which includes 90-95% of the cases, is influenced by both genetic and environmental factors. Identification of these factors may help in control of this disease. The Insertion/Deletion (I/D) polymorphism in Angiotensin-Converting Enzyme (ACE) gene and rs2106809 (C > T) polymorphism in Angiotensin-Converting Enzyme 2 (ACE2) gene have been reported to be associated with essential hypertension in different populations. AIM To investigate the association of ACE I/D and ACE2 rs2106809 polymorphisms with essential hypertension in the population of Odisha, an eastern Indian state. SUBJECTS AND METHODS A total of 246 hypertensives (159 males and 87 females) and 274 normotensives (158 males and 116 females) were enrolled in the study. Detailed anthropometric data, tobacco, alcohol and food habits were recorded and 2 ml of venous blood was collected for biochemical and genetic analysis. RESULTS The DD genotype of ACE and TT genotype of ACE2 were significantly high among female hypertensives, while T allele of ACE2 was linked to male hypertensives. In the male population, alcohol was also identified as a potential risk factor. CONCLUSION Among females, ACE I/D and ACE2 rs2106809 polymorphisms, while among males, ACE2 rs2106809 polymorphism and alcohol consumption are associated with essential hypertension in the study population.
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Affiliation(s)
- Manisha Patnaik
- Department of Molecular Biology, Regional Medical Research Centre , Bhubaneswar , India
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Liang H, Wu X, Chen X, Wang Y, Li Y, Pan B, Li M, Liu H. Gender difference in association of NEDD4L gene variants among southern Han Chinese with essential hypertension – a population-based case–control study. Clin Exp Hypertens 2013; 36:309-14. [DOI: 10.3109/10641963.2013.827693] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Hoffman MJ, Flister MJ, Nunez L, Xiao B, Greene AS, Jacob HJ, Moreno C. Female-specific hypertension loci on rat chromosome 13. Hypertension 2013; 62:557-63. [PMID: 23817491 DOI: 10.1161/hypertensionaha.113.01708] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A 3.7-Mb region of rat chromosome 13 (45.2-49.0 Mb) affects blood pressure (BP) in females only, indicating the presence of sex-specific BP loci in close proximity to the Renin locus. In the present study, we used a series of Dahl salt-sensitive/Mcwi-13 Brown Norway congenic rat strains to further resolve BP loci within this region. We identified 3 BP loci affecting female rats only, of which the 2 smaller loci (line9BP3 and line9BP4) were functionally characterized by sequence and expression analysis. Compared with SS (SS/HsdMcwiCrl), the presence of a 591-kb region of BN (BN/NHsdMcwi) chromosome 13 (line9BP3) significantly lowered BP by 21 mm Hg on an 8% NaCl diet (153 ± 7 versus 174 ± 5 mm Hg; P<0.001). Unexpectedly, the addition of 23 kb of Brown Norway chromosome 13 (line9BP4) completely erased the female-specific BP protection on 8% NaCl diet, suggesting that BN hypertensive allele(s) reside in this region. The congenic interval of the protective line 9F strain contains 3 genes (Optc, Prelp, and Fmod), and the hypertensive line 9E contains 1 additional gene (Btg2). Sequence analysis of the 2 BP loci revealed a total of 282 intergenic variants, with no coding variants. Analysis of gene expression by quantitative real-time polymerase chain reaction revealed strain- and sex-specific differences in Prelp, Fmod, and Btg2 expression, implicating these as novel candidate genes for female-specific hypertension.
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Affiliation(s)
- Matthew J Hoffman
- Human and Molecular Genetics Center, Medical College of Wisconsin, Milwaukee, WI, USA
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Kang SW. Adrenergic genetic mechanisms in hypertension and hypertensive kidney disease. Electrolyte Blood Press 2013; 11:24-8. [PMID: 23946762 PMCID: PMC3741439 DOI: 10.5049/ebp.2013.11.1.24] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Accepted: 06/20/2013] [Indexed: 12/15/2022] Open
Abstract
Catecholamine secretory traits were significantly heritable, as were stress-induced blood pressure changes. Tyrosine hydroxylase (TH) is the rate-limiting enzyme in catecholamine biosynthesis. In the tyrosine hyroxylase promoter, significant associations were found for urinary catecholamine excretion and for blood pressure response to stress. TH promoter haplotype 2 (TGGG) showed pleiotropy, increasing both norepinephrine excretion and blood pressure during stress. In hypertension, 2 independent case-control studies (1,266 subjects with 53% women and 927 subjects with 24% women) replicated the effect of C-824T in the determination of blood pressure. Chromogranin A (CHGA) plays a fundamental role in the biogenesis of catecholamine secretory granules. Changes in the storage and release of CHGA in clinical and experimental hypertension prompted us to study whether genetic variation at the CHGA locus might contribute to alterations in autonomic function, and hence hypertension and its target organ consequences such as hypertensive kidney disease (nephrosclerosis). Systematic polymorphism discovery across the human CHGA locus revealed such regulatory regions as the proximal promoter and 3'-UTR. In chromaffin cell-transfected CHGA 3'-UTR and promoter/luciferase reporter plasmids, the functional consequences of the regulatory/non-coding allelic variants were documented. Variants in both the proximal promoter and the 3'-UTR displayed statistical associations with hypertension and hypertensive end stage renal disease. Therefore, I would like to review the common genetic variation in TH and CHGA as a cause of inter-individual variation in sympathetic activity, and ultimately blood pressure and hypertensive kidney disease.
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Affiliation(s)
- Sun Woo Kang
- Department of Nephrology, College of Medicine, Inje University, Busan, Korea
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Kumar R, Kohli S, Alam P, Barkotoky R, Gupta M, Tyagi S, Jain SK, Pasha MAQ. Interactions between the FTO and GNB3 genes contribute to varied clinical phenotypes in hypertension. PLoS One 2013; 8:e63934. [PMID: 23691120 PMCID: PMC3653800 DOI: 10.1371/journal.pone.0063934] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Accepted: 04/10/2013] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND The genes FTO and GNB3 are implicated in essential hypertension but their interaction remains to be explored. This study investigates the role of interaction between the two genes in the pathophysiology of essential hypertension. METHODS/PRINCIPAL FINDINGS In a case-control study comprising 750 controls and 550 patients, interaction between the polymorphisms of FTO and GNB3 was examined using multifactor dimensionality reduction (MDR). The influence of interaction on clinical phenotypes like systolic and diastolic blood pressure, mean arterial pressure and body mass index was also investigated. The 3-locus MDR model comprising FTO rs8050136C/A and GNB3 rs1129649T/C and rs5443C/T emerged as the best disease conferring model. Moreover, the interacted-genotypes having either 1, 2, 3, 4 or 5 risk alleles correlated with linearly increasing odds ratios of 1.91 (P = 0.027); 3.93 (P = 2.08E-06); 4.51 (P = 7.63E-07); 7.44 (P = 3.66E-08) and 11.57 (P = 1.18E-05), respectively, when compared with interacted-genotypes devoid of risk alleles. Furthermore, interactions among haplotypes of FTO (H1-9) and GNB3 (Ha-d) differed by >1.5-fold for protective-haplotypes, CTGGC+TC [H2+Ha] and CTGAC+TC [H4+Ha] (OR = 0.39, P = 0.003; OR = 0.22, P = 6.86E-05, respectively) and risk-haplotypes, AAAGC+CT [H3+Hc] and AAAGC+TT [H3+Hd] (OR = 2.91, P = 9.98E-06; OR = 2.50, P = 0.004, respectively) compared to individual haplotypes. Moreover, the effectiveness of gene-gene interaction was further corroborated with a 1.29-, 1.25- and 1.38-fold higher SBP, MAP and BMI, respectively, in patients having risk interacted-haplotype H3+Hc and 2.48-fold higher SBP having risk interacted-haplotype H3+Hd compared to individual haplotypes. CONCLUSION Interactions between genetic variants of FTO and GNB3 influence clinical parameters to augment hypertension.
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Affiliation(s)
- Rahul Kumar
- Functional Genomics Unit, Council of Scientific and Industrial Research -Institute of Genomics and Integrative Biology, Delhi, India
- Department of Biotechnology, Hamdard University, New Delhi, India
| | - Samantha Kohli
- Functional Genomics Unit, Council of Scientific and Industrial Research -Institute of Genomics and Integrative Biology, Delhi, India
| | - Perwez Alam
- Functional Genomics Unit, Council of Scientific and Industrial Research -Institute of Genomics and Integrative Biology, Delhi, India
| | | | - Mohit Gupta
- Department of Cardiology, G. B. Pant hospital, New Delhi, India
| | - Sanjay Tyagi
- Department of Cardiology, G. B. Pant hospital, New Delhi, India
| | - S. K. Jain
- Department of Biotechnology, Hamdard University, New Delhi, India
| | - M. A. Qadar Pasha
- Functional Genomics Unit, Council of Scientific and Industrial Research -Institute of Genomics and Integrative Biology, Delhi, India
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Boonpeng H, Yusoff K. The utility of copy number variation (CNV) in studies of hypertension-related left ventricular hypertrophy (LVH): rationale, potential and challenges. Mol Cytogenet 2013; 6:8. [PMID: 23448375 PMCID: PMC3599593 DOI: 10.1186/1755-8166-6-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2012] [Accepted: 01/03/2013] [Indexed: 01/08/2023] Open
Abstract
The ultimate goal of human genetics is to understand the role of genome variation in elucidating human traits and diseases. Besides single nucleotide polymorphism (SNP), copy number variation (CNV), defined as gains or losses of a DNA segment larger than 1 kb, has recently emerged as an important tool in understanding heritable source of human genomic differences. It has been shown to contribute to genetic susceptibility of various common and complex diseases. Despite a handful of publications, its role in cardiovascular diseases remains largely unknown. Here, we deliberate on the currently available technologies for CNV detection. The possible utility and the potential roles of CNV in exploring the mechanisms of cardiac remodeling in hypertension will also be addressed. Finally, we discuss the challenges for investigations of CNV in cardiovascular diseases and its possible implications in diagnosis of hypertension-related left ventricular hypertrophy (LVH).
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Affiliation(s)
- Hoh Boonpeng
- Institute of Medical Molecular Biotechnology, Faculty of Medicine, Universiti Teknologi MARA, Sungai Buloh Campus, Jalan Hospital, Sungai, Buloh, 47000, Malaysia.
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Genes and environment: novel, functional polymorphism in the human cathepsin L (CTSL1) promoter disrupts a xenobiotic response element (XRE) to alter transcription and blood pressure. J Hypertens 2013; 30:1961-9. [PMID: 22871890 DOI: 10.1097/hjh.0b013e328356b86a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Cathepsin L (CTSL1) catalyzes the formation of peptides that influence blood pressure (BP). Naturally occurring genetic variation or targeted ablation of the Ctsl1 locus in mice yield cardiovascular pathology. Here, we searched for genetic variation across the human CTSL1 locus and probed its functional effects, especially in the proximal promoter. METHODS AND RESULTS Systematic polymorphism discovery by re-sequencing across CTSL1 in 81 patients uncovered 38 genetic variants, five of which were relatively common (MAF >5%), creating a single linkage disequilibrium block in multiple biogeographic ancestries. One of these five common variants lay in a functional domain of the gene: promoter C-171A (rs3118869), which disrupts a predicted xenobiotic response element (XRE; match C>A). In transfected CTSL1 promoter/luciferase reporter plasmids, C-171A allele influenced transcription (C>A, P = 3.36E-6), and transcription was also augmented by co-exposure to the aryl hydrocarbon receptor (AHR) complex (AHR:ARNT) in the presence of their ligand dioxin (P = 6.81E-8); allele (C vs. A) and AHR:ARNT/dioxin stimulus interacted to control gene expression (interaction P = 0.033). Endogenous Ctsl1, Ahr, and Arnt transcripts were present in chromaffin cells. Promoter functional C-171A genotype also predicted hypertension (P = 1.0E-3), SBP (P = 4.0E-4), and DBP (P = 3.0E-3), in an additive pattern for diploid genotypes (A/A > C/A > C/C) in 868 patients, and the results were extended by validation analysis into an independent population sample of 986 patients. CONCLUSION We conclude that common genetic variation in the proximal CTSL1 promoter, especially at position C-171A, is functional in cells, and alters transcription so as to explain the association of CTSL1 with BP in vivo. At the XRE, endogenous genetic variation plus exogenous aryl hydrocarbon stimulation interact to control CTSL1 gene expression. These results unveil a novel control point whereby heredity and environment can intersect to control a complex trait, and point to new transcriptional strategies for intervention into transmitter biosynthesis and its cardiovascular consequences.
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Oguz E, Alasehirli B, Pehlivan Y, Onat AM, Oztuzcu S, Ozkara E, Kisacik B, Camci C, Demiryürek AT. Association between Rho-kinase (ROCK2) gene polymorphisms and Behçet's disease. Transl Res 2012; 160:428-34. [PMID: 22939913 DOI: 10.1016/j.trsl.2012.08.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2012] [Revised: 08/07/2012] [Accepted: 08/09/2012] [Indexed: 12/14/2022]
Abstract
Behçet's disease (BD) is a multi-systemic vasculitis. The aim of this study was to investigate the association between Rho-kinase (ROCK2) gene polymorphisms and patients with BD in a Turkish population. A total of 194 BD patients and 276 healthy controls with similar age and sex were included to this study. Polymorphisms were analyzed in genomic DNA using a BioMark 96.96 dynamic array system. mRNA from blood samples was extracted, and real-time polymerase chain reaction was performed for ROCK2 gene expression. There were marked changes in both genotype (TT, 41.8%; TA, 30.3%) and allele (T, 57%; A, 43%) frequencies for the rs35768389 (Asp601Val) polymorphism in patients compared with controls (TT, 64.6%; TA, 9.4%, P < 0.0001; T, 69.3%; A, 30.7%, P = 0.0004). Although CC genotype (52.0%) of rs1515219 polymorphism were more frequent, CT genotype (27.7%) were less frequent among the patients than controls (CC, 31.7%, CT, 44.6%, P = 0.0001). There was an increase in C allele (65.8% vs 54.0%) and decrease in T allele frequencies (34.2% vs 46.0%, P = 0.001) in patients. However, no associations were found with rs726843, rs2290156, rs965665, rs10178332, rs2230774, rs6755196, rs10929732, and rs34945852 polymorphisms. There was an increase in peripheral blood mRNA ROCK2 expressions in patients. This is the first study to examine the involvement of ROCK2 gene variation in the risk of incident BD. The results strongly suggest that ROCK2 gene polymorphisms may modify individual susceptibility to BD in the Turkish population.
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Affiliation(s)
- Elif Oguz
- Department of Medical Pharmacology, University of Gaziantep, Gaziantep, Turkey
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40
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Baynam G, Walters M, Claes P, Kung S, LeSouef P, Dawkins H, Gillett D, Goldblatt J. The facial evolution: looking backward and moving forward. Hum Mutat 2012; 34:14-22. [PMID: 23033261 DOI: 10.1002/humu.22219] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2012] [Accepted: 08/30/2012] [Indexed: 01/16/2023]
Abstract
Three-dimensional (3D) facial analysis is ideal for high-resolution, nonionizing, noninvasive objective, high-throughput phenotypic, and phenomic studies. It is a natural complement to (epi)genetic technologies to facilitate advances in the understanding of rare and common diseases. The face is uniquely reflective of the primordial tissues, and there is evidence supporting the application of 3D facial analysis to the investigation of variation and disease including studies showing that the face can reflect systemic health, provides diagnostic clues to disorders, and that facial variation reflects biological pathways. In addition, facial variation has been related to evolutionary factors. The purpose of this review is to look backward to suggest that knowledge of human evolution supports, and may instruct, the application and interpretation of studies of facial morphology for documentation of human variation and investigation of its relationships with health and disease. Furthermore, in the context of advances of deep phenotyping and data integration, to look forward to suggest approaches to scalable implementation of facial analysis, and to suggest avenues for future research and clinical application of this technology.
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Affiliation(s)
- Gareth Baynam
- Genetic Services of Western Australia, Princess Margaret and King Edward Memorial Hospitals, Perth, Australia
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Abstract
There is increasing evidence that the intrarenal dopaminergic system plays an important role in the regulation of blood pressure, and defects in dopamine signaling appear to be involved in the development of hypertension. Recent experimental models have definitively demonstrated that abnormalities in intrarenal dopamine production or receptor signaling can predispose to salt-sensitive hypertension and a dysregulated renin-angiotensin system. In addition, studies in both experimental animal models and in humans with salt-sensitive hypertension implicate abnormalities in dopamine receptor regulation due to receptor desensitization resulting from increased G-protein receptor kinase 4 (GRK4) activity. Functional polymorphisms that predispose to increased basal GRK4 activity both decrease dopamine receptor activity and increase angiotensin II type 1 (AT1) receptor activity and are associated with essential hypertension in a number of different human cohorts.
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Affiliation(s)
- Raymond C Harris
- Division of Nephrology, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN 37232, USA.
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Friese RS, Ye C, Nievergelt CM, Schork AJ, Mahapatra NR, Rao F, Napolitan PS, Waalen J, Ehret GB, Munroe PB, Schmid-Schönbein GW, Eskin E, O'Connor DT. Integrated computational and experimental analysis of the neuroendocrine transcriptome in genetic hypertension identifies novel control points for the cardiometabolic syndrome. ACTA ACUST UNITED AC 2012; 5:430-40. [PMID: 22670052 DOI: 10.1161/circgenetics.111.962415] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
BACKGROUND Essential hypertension, a common complex disease, displays substantial genetic influence. Contemporary methods to dissect the genetic basis of complex diseases such as the genomewide association study are powerful, yet a large gap exists between the fraction of population trait variance explained by such associations and total disease heritability. METHODS AND RESULTS We developed a novel, integrative method (combining animal models, transcriptomics, bioinformatics, molecular biology, and trait-extreme phenotypes) to identify candidate genes for essential hypertension and the metabolic syndrome. We first undertook transcriptome profiling on adrenal glands from blood pressure extreme mouse strains: the hypertensive BPH (blood pressure high) and hypotensive BPL (blood pressure low). Microarray data clustering revealed a striking pattern of global underexpression of intermediary metabolism transcripts in BPH. The MITRA algorithm identified a conserved motif in the transcriptional regulatory regions of the underexpressed metabolic genes, and we then hypothesized that regulation through this motif contributed to the global underexpression. Luciferase reporter assays demonstrated transcriptional activity of the motif through transcription factors HOXA3, SRY, and YY1. We finally hypothesized that genetic variation at HOXA3, SRY, and YY1 might predict blood pressure and other metabolic syndrome traits in humans. Tagging variants for each locus were associated with blood pressure in a human population blood pressure extreme sample with the most extensive associations for YY1 tagging single nucleotide polymorphism rs11625658 on systolic blood pressure, diastolic blood pressure, body mass index, and fasting glucose. Meta-analysis extended the YY1 results into 2 additional large population samples with significant effects preserved on diastolic blood pressure, body mass index, and fasting glucose. CONCLUSIONS The results outline an innovative, systematic approach to the genetic pathogenesis of complex cardiovascular disease traits and point to transcription factor YY1 as a potential candidate gene involved in essential hypertension and the cardiometabolic syndrome.
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Affiliation(s)
- Ryan S Friese
- Department of Bioengineering, University of California at San Diego School of Medicine, 9500 Gilman Drive, La Jolla, CA 92093-0838, USA
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Abstract
PURPOSE OF REVIEW This review will highlight the recent findings concerning the role of the intrarenal dopaminergic system in hypertension, especially the role of alterations in G-protein receptor kinase 4 (GRK4) activity. RECENT FINDINGS Recent studies highlight the importance of the intrarenal dopaminergic system in blood pressure regulation and how defects in dopamine signaling are involved in the development of hypertension. There are recent experimental models that definitively demonstrate that abnormalities in intrarenal dopamine production or receptor signaling can predispose to salt-sensitive hypertension and a dysregulated renin-angiotensin system. Furthermore, studies in experimental animal models and in humans with salt-sensitive hypertension implicate abnormalities in dopamine receptor regulation because of receptor desensitization resulting from increased GRK4 activity. Functional polymorphisms that predispose to increased basal GRK4 activity both decrease dopamine receptor activity and increase angiotensin II AT1 receptor activity and are associated with essential hypertension in a number of different human cohorts. SUMMARY The ongoing elucidation of this important regulatory pathway further emphasizes the importance of the kidney in maintenance of blood pressure control and may help to delineate the underlying mechanisms predisposing individuals or populations to increased risk for development of hypertension.
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3D facial analysis can investigate vaccine responses. Med Hypotheses 2012; 78:497-501. [DOI: 10.1016/j.mehy.2012.01.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2011] [Accepted: 01/09/2012] [Indexed: 02/01/2023]
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Chen LY, Zhao WH, Tian W, Guo J, Jiang F, Jin LJ, Sun YX, Chen KM, An LL, Li GD, Li Q, Li Y, Wu C, Zhao L, Wang WJ, Zheng GY, Li B, Li XQ, Hu J, Tian XL. STK39 is an independent risk factor for male hypertension in Han Chinese. Int J Cardiol 2012; 154:122-7. [DOI: 10.1016/j.ijcard.2010.09.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2010] [Revised: 06/23/2010] [Accepted: 09/05/2010] [Indexed: 01/11/2023]
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Asghar M, Tayebati SK, Lokhandwala MF, Hussain T. Potential dopamine-1 receptor stimulation in hypertension management. Curr Hypertens Rep 2011; 13:294-302. [PMID: 21633929 DOI: 10.1007/s11906-011-0211-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The role of dopamine receptors in blood pressure regulation is well established. Genetic ablation of both dopamine D1-like receptor subtypes (D1, D5) and D2-like receptor subtypes (D2, D3, D4) results in a hypertensive phenotype in mice. This review focuses on the dopamine D1-like receptor subtypes D1 and D5 (especially D1 receptors), as they play a major role in regulating sodium homeostasis and blood pressure. Studies mostly describing the role of renal dopamine D1-like receptors are included, as the kidneys play a pivotal role in the maintenance of sodium homeostasis and the long-term regulation of blood pressure. We also attempt to describe the interaction between D1-like receptors and other proteins, especially angiotensin II type 1 and type 2 receptors, which are involved in the maintenance of sodium homeostasis and blood pressure. Finally, we discuss a new concept of renal D1 receptor regulation in hypertension that involves oxidative stress mechanisms.
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Affiliation(s)
- Mohammad Asghar
- Heart and Kidney Institute, College of Pharmacy, University of Houston, Houston, TX 77204, USA.
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Kelsey RM, Alpert BS, Dahmer MK, Krushkal J, Quasney MW. Alpha-adrenergic receptor gene polymorphisms and cardiovascular reactivity to stress in Black adolescents and young adults. Psychophysiology 2011; 49:401-12. [PMID: 22091949 DOI: 10.1111/j.1469-8986.2011.01319.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2010] [Accepted: 09/26/2011] [Indexed: 01/11/2023]
Abstract
Cardiovascular reactivity to stress and α-adrenergic receptor (α-AR) function may contribute to the development of hypertension. As Black Americans have an increased risk of hypertension, we evaluated associations between α(1A) -AR (Arg492Cys), α(2A) -AR (-1291C/G), and α(2B) -AR (Ins/Del301-303) gene variants and cardiovascular reactivity in 500 normotensive Black youth. Heart rate, preejection period, total peripheral resistance, and blood pressure were measured during cold and psychological stress. The Arg492Cys polymorphism in the α(1A) -AR gene was associated with heart rate reactivity to stress, but the association depended on sex. The -1291C/G promoter polymorphism in the α(2A) -AR gene was associated with vascular reactivity to stress; vasoconstriction increased as a linear function of the number of copies of the variant G allele. Thus, specific associations emerged between genetic variations in α-Ars and cardiovascular reactivity in young Blacks.
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Affiliation(s)
- Robert M Kelsey
- Department of Pediatrics, University of Tennessee Health Science Center, Memphis, TN 38104, USA.
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Abstract
Dopamine is an important regulator of systemic blood pressure via multiple mechanisms. It affects fluid and electrolyte balance by its actions on renal hemodynamics and epithelial ion and water transport and by regulation of hormones and humoral agents. The kidney synthesizes dopamine from circulating or filtered L-DOPA independently from innervation. The major determinants of the renal tubular synthesis/release of dopamine are probably sodium intake and intracellular sodium. Dopamine exerts its actions via two families of cell surface receptors, D1-like receptors comprising D1R and D5R, and D2-like receptors comprising D2R, D3R, and D4R, and by interactions with other G protein-coupled receptors. D1-like receptors are linked to vasodilation, while the effect of D2-like receptors on the vasculature is variable and probably dependent upon the state of nerve activity. Dopamine secreted into the tubular lumen acts mainly via D1-like receptors in an autocrine/paracrine manner to regulate ion transport in the proximal and distal nephron. These effects are mediated mainly by tubular mechanisms and augmented by hemodynamic mechanisms. The natriuretic effect of D1-like receptors is caused by inhibition of ion transport in the apical and basolateral membranes. D2-like receptors participate in the inhibition of ion transport during conditions of euvolemia and moderate volume expansion. Dopamine also controls ion transport and blood pressure by regulating the production of reactive oxygen species and the inflammatory response. Essential hypertension is associated with abnormalities in dopamine production, receptor number, and/or posttranslational modification.
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Affiliation(s)
- Ines Armando
- Children’s National Medical Center—Center for Molecular Physiology Research, Washington, District of Columbia
| | - Van Anthony M. Villar
- Children’s National Medical Center—Center for Molecular Physiology Research, Washington, District of Columbia
| | - Pedro A. Jose
- Children’s National Medical Center—Center for Molecular Physiology Research, Washington, District of Columbia
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49
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Glutathione S-transferase variants as risk factor for essential hypertension in Italian patients. Mol Cell Biochem 2011; 357:227-33. [DOI: 10.1007/s11010-011-0893-3] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2011] [Accepted: 05/17/2011] [Indexed: 10/18/2022]
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Abstract
The assessment of salt sensitivity of blood pressure is difficult because of the lack of universal consensus on definition. Regardless of the variability in the definition of salt sensitivity, increased salt intake, independent of the actual level of blood pressure, is also a risk factor for cardiovascular morbidity and mortality and kidney disease. A modest reduction in salt intake results in an immediate decrease in blood pressure, with long-term beneficial consequences. However, some have suggested that dietary sodium restriction may not be beneficial to everyone. Thus, there is a need to distinguish salt-sensitive from salt-resistant individuals, but it has been difficult to do so with phenotypic studies. Therefore, there is a need to determine the genes that are involved in salt sensitivity. This review focuses on genes associated with salt sensitivity, with emphasis on the variants associated with salt sensitivity in humans that are not due to monogenic causes. Special emphasis is given to gene variants associated with salt sensitivity whose protein products interfere with cell function and increase blood pressure in transgenic mice.
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Affiliation(s)
- Hironobu Sanada
- Division of Health Science Research, Fukushima Welfare Federation of Agricultural Cooperatives, Fukushima, Japan.
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