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Daghem M, Newby DE. Innovation in medical imaging to improve disease staging, therapeutic intervention, and clinical outcomes. Atherosclerosis 2020; 306:75-84. [DOI: 10.1016/j.atherosclerosis.2020.03.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 02/20/2020] [Accepted: 03/11/2020] [Indexed: 12/20/2022]
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Lin JF, Wu S, Juang JMJ, Chiang FT, Hsu LA, Teng MS, Cheng ST, Huang HL, Ko YL. Osteoprotegerin and osteopontin levels, but not gene polymorphisms, predict mortality in cardiovascular diseases. Biomark Med 2019; 13:751-760. [PMID: 31157557 DOI: 10.2217/bmm-2018-0458] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Aim: This study aims to investigate whether osteoprotegerin (OPG) or osteopontin (OPN) single nucleotide polymorphisms (SNPs) will predict survival. Materials & methods: This study enrolled 617 participants undergoing health examination, 536 coronary artery disease (CAD) patients and 86 peripheral artery disease (PAD) patients. Genotypes of OPG SNP rs2073618 and OPN SNP rs11730582 were determined. OPG and OPN levels were measured. Results: In both CAD and PAD populations, high OPG and OPN levels were strong predictors of all-cause death. The OPG rs2073618 CC genotype and the OPN rs11730582 TT genotype did not predict mortality. Conclusion: High OPG and high OPN levels, but not OPG rs2073618 CC genotype or OPN rs11730582 TT genotype, were strong predictors of mortality in both CAD and PAD patients.
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Affiliation(s)
- Jeng-Feng Lin
- Department of Internal Medicine, Cardiovascular Center & Divisionof Cardiology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan.,School of Post-Baccalaureate Chinese Medicine, Tzu Chi University, Hualien, Taiwan
| | - Semon Wu
- Department of Internal Medicine, Cardiovascular Center & Divisionof Cardiology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan.,Department of Life Science, Chinese Culture University, Taipei, Taiwan
| | - Jyh-Ming J Juang
- Department of Internal Medicine, Cardiovascular Center & Division of Cardiology, National Taiwan University Hospital & College of Medicine National Taiwan University, Taipei, Taiwan
| | - Fu-Tien Chiang
- Department of Internal Medicine, Cardiovascular Center & Division of Cardiology, National Taiwan University Hospital & College of Medicine National Taiwan University, Taipei, Taiwan
| | - Lung-An Hsu
- Department of Internal Medicine, Cardiovascular Division, Chang Gung Memorial Hospital & College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Ming-Sheng Teng
- Department of Internal Medicine, Cardiovascular Center & Divisionof Cardiology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan
| | - Shih-Tsung Cheng
- Department of Internal Medicine, Cardiovascular Center & Divisionof Cardiology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan
| | - Hsuan-Li Huang
- Department of Internal Medicine, Cardiovascular Center & Divisionof Cardiology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan.,School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Yu-Lin Ko
- Department of Internal Medicine, Cardiovascular Center & Divisionof Cardiology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan.,School of Medicine, Tzu Chi University, Hualien, Taiwan
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Kosmopoulos M, Paschou SA, Grapsa J, Anagnostis P, Vryonidou A, Goulis DG, Siasos G. The Emerging Role of Bone Markers in Diagnosis and Risk Stratification of Patients With Coronary Artery Disease. Angiology 2019; 70:690-700. [PMID: 30696256 DOI: 10.1177/0003319718822625] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Molecules that govern bone metabolism, such as osteoprotegerin (OPG) and osteopontin (OPN), have been isolated from other tissues, including blood vessels. Atherosclerosis and coronary artery disease (CAD) are leading causes of mortality worldwide. Despite novel biochemical and imaging techniques, early detection of CAD is still unsatisfactory. Experimental data indicate that bone turnover markers (BTMs) contribute to the development of atherosclerosis. This finding has sparked interest in their clinical use. This narrative review analyzed information from >50 human studies, which strongly suggest that OPG, OPN, and alkaline phosphatase (ALP) serum concentrations are altered in patients with CAD. Osteoprotegerin seems to be more useful for the detection of early disease, while OPN and ALP are recruited in vessels after the establishment of disease. Osteocalcin may be used as a flow cytometry marker for endothelial progenitor cells and can constitute a marker to monitor response to interventional treatments and risk of restenosis. However, most data derive from observational studies. Incorporation of BTMs in multifactorial computational algorithms could further determine their role in CAD diagnosis and prognosis together with other imaging techniques and biochemical markers.
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Affiliation(s)
- Marinos Kosmopoulos
- 1 Division of Cardiology, Department of Medicine, University of Minnesota School of Medicine, Minneapolis, MN, USA
| | - Stavroula A Paschou
- 2 Division of Endocrinology and Diabetes, "Aghia Sophia" Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Julia Grapsa
- 3 Barts Heart Center, St Bartholomew's Hospital, London, UK
| | - Panagiotis Anagnostis
- 4 Unit of Reproductive Endocrinology, First Department of Obstetrics and Gynecology, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Andromachi Vryonidou
- 5 Department of Endocrinology and Diabetes, Hellenic Red Cross Hospital, Athens, Greece
| | - Dimitrios G Goulis
- 4 Unit of Reproductive Endocrinology, First Department of Obstetrics and Gynecology, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Gerasimos Siasos
- 6 First Department of Cardiology, Hippokration Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
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Siasos G, Oikonomou E, Maniatis K, Georgiopoulos G, Kokkou E, Tsigkou V, Zaromitidou M, Antonopoulos A, Vavuranakis M, Stefanadis C, Papavassiliou AG, Tousoulis D. Prognostic significance of arterial stiffness and osteoprotegerin in patients with stable coronary artery disease. Eur J Clin Invest 2018; 48. [PMID: 29330911 DOI: 10.1111/eci.12890] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 01/09/2018] [Indexed: 01/02/2023]
Abstract
BACKGROUND Arterial stiffness and vascular calcification significantly contribute to coronary atherosclerosis progression. The prognostic value of increased arterial stiffness and vascular calcification in subjects with stable coronary artery disease (CAD) after percutaneous coronary intervention(PCI) is currently under question. MATERIALS AND METHODS We randomly enrolled 262 patients with stable CAD 1 month after successful PCI. Carotid-femoral pulse wave velocity (PWV) was measured as a well-established index of central aortic stiffness. Osteoprotegerin (OPG) plasma levels were measured as a biomarker of vascular calcification. Patients were followed up prospectively up to 52 months. The primary endpoint was the composite of death from cardiovascular causes, myocardial infarction, stroke or hospitalization for cardiovascular causes. RESULTS During the follow-up period, 48 patients presented the primary composite endpoint. Subjects who presented the primary endpoint, compared to subjects free of cardiovascular events, had significantly increased PWV (9.45 ± 2.19 m/s vs 8.73 ± 2.07 m/s, P = .04) and OPG levels (4.21 ± 2.19 pmol/L vs 3.18 ± 1.74 pmol/L, P = .003). Survival analysis indicated that PWV predicted adverse cardiac events MACE (Hazard ratio = 1.29 95%CI: 1.07-1.57, P = .008) independently from confounders such as age, sex, smoking habits, ejection fraction, extent of coronary artery disease, hypertension and diabetes mellitus. Interestingly, for every increase in pulse wave velocity by 1 m/s, there is an anticipated increase in the risk of major adverse cardiovascular event (MACE) by 29%. CONCLUSIONS These findings extend the current knowledge concerning the role of arterial stiffness as powerful biomarkers in cardiovascular disease. Measurement of PWV might have a role in ascertaining prognosis and managing treatment in patients with stable CAD after PCI.
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Affiliation(s)
- Gerasimos Siasos
- Department of Cardiology, School of Medicine, 'Hippokration' General Hospital, National and Kapodistrian University of Athens, Athens, Greece.,Cardiovascular Division, Brigham and Women's Hospital, Harvard Medical School and Harvard-MIT Biomedical Engineering Center, Massachusetts Institute of Technology, Boston, MA, USA
| | - Evangelos Oikonomou
- Department of Cardiology, School of Medicine, 'Hippokration' General Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Konstantinos Maniatis
- Department of Cardiology, School of Medicine, 'Hippokration' General Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Georgios Georgiopoulos
- Department of Cardiology, School of Medicine, 'Hippokration' General Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Eleni Kokkou
- Department of Cardiology, School of Medicine, 'Hippokration' General Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Vasiliki Tsigkou
- Department of Cardiology, School of Medicine, 'Hippokration' General Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Marina Zaromitidou
- Department of Cardiology, School of Medicine, 'Hippokration' General Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Alexis Antonopoulos
- Department of Cardiology, School of Medicine, 'Hippokration' General Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Manolis Vavuranakis
- Department of Cardiology, School of Medicine, 'Hippokration' General Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | | | - Athanasios G Papavassiliou
- Department of Biological Chemistry, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Dimitris Tousoulis
- Department of Cardiology, School of Medicine, 'Hippokration' General Hospital, National and Kapodistrian University of Athens, Athens, Greece
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Prediction of risk of cardiovascular events in patients with mild to moderate coronary artery lesions using naïve Bayesian networks. JOURNAL OF GERIATRIC CARDIOLOGY : JGC 2017; 13:899-905. [PMID: 28133466 PMCID: PMC5253406 DOI: 10.11909/j.issn.1671-5411.2016.11.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
BACKGROUND This prospective study integrated multiple clinical indexes and inflammatory markers associated with coronary atherosclerotic vulnerable plaque to establish a risk prediction model that can evaluate a patient with certain risk factors for the likelihood of the occurrence of a coronary heart disease event within one year. METHODS This study enrolled in 2686 patients with mild to moderate coronary artery lesions. Eighty-five indexes were recorded, included baseline clinical data, laboratory studies, and procedural characteristics. During the 1-year follow-up, 233 events occurred, five patients died, four patients suffered a nonfatal myocardial infarction, four patients underwent revascularization, and 220 patients were readmitted for angina pectoris. The Risk Estimation Model and the Simplified Model were conducted using Bayesian networks and compared with the Single Factor Models. RESULTS The area under the curve was 0.88 for the Bayesian Model and 0.85 for the Simplified Model, while the Single Factor Model had a maximum area under the curve of 0.65. CONCLUSION The new models can be used to assess the short-term risk of individual coronary heart disease events and may assist in guiding preventive care.
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Zhou J, Zhao Y. Osteoprotegerin Gene (OPG) Polymorphisms Associated with Peri-implantitis Susceptibility in a Chinese Han Population. Med Sci Monit 2016; 22:4271-4276. [PMID: 27828936 PMCID: PMC5106242 DOI: 10.12659/msm.897592] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Background The aim of this study was to investigate the association between T950C (rs2073617) and G1181C (rs2073618) polymorphisms of the osteoprotegerin gene (OPG) and the susceptibility of peri-implantitis in the Chinese Han population. Material/Methods 110 patients with peri-implantitis and 116 healthy persons from the Chinese Han population were included in this study using a case-control design; rs2073617 and rs2073618 in OPG were genotyped by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). The linkage disequilibrium (LD) and haplotype analysis were performed with Haploview software. Hardy-Weinberg equilibrium (HWE) was assessed in the control group based on the genotype distributions of OPG polymorphisms. The genotype, allele, and haplotype distribution differences between the case and control groups were analyzed by chi-square test, and the relative risk of PD was expressed by odds ratio (OR) and 95% confidence interval (CI). Results The study results showed that people carrying the CC genotype of rs2073618 were more likely to have peri-implantitis than GG genotype carriers (OR=2.18, 95% CI=1.03–4.62, p=0.04). In addition, patients with the C allele had 1.47 times the risk of suffering from peri-implantitis (OR=1.47, 95% CI=1.01–2.13, p=0.04), but not rs2073617 polymorphism. The G-C haplotype frequency of rs2073618-rs2073617 in OPG was significantly correlated to the increased susceptibility of peri-implantitis (OR=2.27, 95% CI=1.20–4.30). Conclusions OPG rs2073618 polymorphism may be related to the risk of peri-implantitis, but not rs2073617. Moreover, haplotype is also a non-ignorable risk factor.
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Affiliation(s)
- Jian Zhou
- State Key Laboratory of Military Stomatology, Department of Prosthetic Dentistry, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, China (mainland)
| | - Yimin Zhao
- State Key Laboratory of Military Stomatology, Department of Prosthetic Dentistry, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, China (mainland)
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Abstract
Osteoprotegerin (OPG) is a 401 amino acid N-glycosylated protein, which is highly expressed in a large number of tissues. OPG mainly binds to two ligands, i.e. RANKL (receptor activator of nuclear factor κB ligand) and TRAIL (tumor necrosis factor- related apoptosis-inducing ligand). Upon binding to the former ligand, OPG inhibits the activation of osteoclasts and promotes apoptosis of osteoclasts, whereas the binding of OPG with TRAIL prevents apoptosis of tumor cells. There is now emerging evidence that OPG participates in the pathogenesis of atherosclerosis and cardiovascular diseases by amplifying the adverse effects of inflammation and several traditional risk factors such as hyperlipidemia, endothelial dysfunction, diabetes mellitus, and hypertension. Some epidemiological studies also showed a positive association between OPG levels and cardiovascular morbidity and mortality. The aim of this article is to provide an overview of the main biochemical, physiological, and pathological aspects of OPG biology in cardiovascular disease.
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Affiliation(s)
- Martina Montagnana
- Chemistry and Clinical Microscopy Section, Department of Life and Reproduction Sciences, University Hospital of Verona, Italy.
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Augoulea A, Vrachnis N, Lambrinoudaki I, Dafopoulos K, Iliodromiti Z, Daniilidis A, Varras M, Alexandrou A, Deligeoroglou E, Creatsas G. Osteoprotegerin as a marker of atherosclerosis in diabetic patients. Int J Endocrinol 2013; 2013:182060. [PMID: 23401681 PMCID: PMC3562657 DOI: 10.1155/2013/182060] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Accepted: 12/28/2012] [Indexed: 01/12/2023] Open
Abstract
Atherosclerosis is the principal cause of cardiovascular disease (CVD) and has many risk factors, among which is diabetes. Osteoprotegerin (OPG) is a soluble glycoprotein, involved in bone metabolism. OPG is also found in other tissues, and studies have shown that it is expressed in vascular smooth muscle cells. OPG has been implicated in various inflammations and also has been linked to diabetes mellitus. Increased serum OPG levels were found in patients with diabetes and poor glycemic control. Furthermore, prepubertal children with type 1 diabetes have significantly increased OPG levels. Receptor activator of nuclear factor kappa-B ligand (RANKL) is not found in the vasculature in normal conditions, but may appear in calcifying areas. OPG and RANKL are important regulators of mineral metabolism in both bone and vascular tissues. Few data are available on the relationship between plasma OPG/RANKL levels and endothelial dysfunction as assessed using noninvasive methods like ultrasound indexes, neither in the general population nor, more specifically, in diabetic patients. The aim of our review study was to investigate, based on the existing data, these interrelationships in order to identify a means of predicting, via noninvasive methods, later development of endothelial dysfunction and vascular complications in diabetic patients.
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Affiliation(s)
- Areti Augoulea
- 2nd Department of Obstetrics and Gynecology, University of Athens Medical School, Aretaeio Hospital, 11526 Athens, Greece
- Obstetric-Gynecological Unit and Research Center, Evgenideio Hospital, University of Athens, 11526 Athens, Greece
| | - Nikolaos Vrachnis
- 2nd Department of Obstetrics and Gynecology, University of Athens Medical School, Aretaeio Hospital, 11526 Athens, Greece
- Obstetric-Gynecological Unit and Research Center, Evgenideio Hospital, University of Athens, 11526 Athens, Greece
- *Nikolaos Vrachnis:
| | - Irene Lambrinoudaki
- 2nd Department of Obstetrics and Gynecology, University of Athens Medical School, Aretaeio Hospital, 11526 Athens, Greece
| | - Konstantinos Dafopoulos
- Department of Obstetrics and Gynaecology, Medical School, University of Thessaly, 41334 Larissa, Greece
| | - Zoe Iliodromiti
- 2nd Department of Obstetrics and Gynecology, University of Athens Medical School, Aretaeio Hospital, 11526 Athens, Greece
| | - Angelos Daniilidis
- 2nd University Department of Obstetrics and Gynecology, Hippokratio General Hospital, University of Thessaloniki Medical School, 54642 Thessaloniki, Greece
| | - Michail Varras
- Department of Obstetrics and Gynaecology, General District Hospital “Helena Venizelou”, 11521 Athens, Greece
| | - Andreas Alexandrou
- 1st Department of Surgery, University of Athens Medical School, Laiko Hospital, 11527 Athens, Greece
| | - Efthymios Deligeoroglou
- 2nd Department of Obstetrics and Gynecology, University of Athens Medical School, Aretaeio Hospital, 11526 Athens, Greece
| | - George Creatsas
- 2nd Department of Obstetrics and Gynecology, University of Athens Medical School, Aretaeio Hospital, 11526 Athens, Greece
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Xu F, Lv S, Chen Y, Song X, Jin Z, Yuan F, Zhou Y, Li H. Macrophage inflammatory protein-1β and fibrinogen are synergistic predictive markers of prognosis of intermediate coronary artery lesions. Cardiology 2012; 121:12-9. [PMID: 22378071 DOI: 10.1159/000335886] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2011] [Accepted: 12/05/2011] [Indexed: 11/19/2022]
Abstract
OBJECTIVE We tested the hypothesis that the plasma levels of fibrinogen and macrophage inflammatory protein (MIP)-1β are synergistic predictive markers of the prognosis of intermediate coronary artery lesions. METHODS A prospective study was performed on 670 patients with intermediate coronary artery lesions. Fibrinogen and MIP-1β were measured. Major adverse cardiac event (MACE) was defined as a composite of cardiovascular death, nonfatal myocardial infarction, revascularization and readmission due to angina pectoris. RESULTS During follow-up, 72 events occurred; 5 patients died, 7 patients suffered a nonfatal myocardial infarction, 11 patients underwent revascularization and 49 patients were readmitted for angina pectoris. In patients with above-median levels of MIP-1β, a 2.62-fold risk of a MACE [95% confidence interval (CI) 1.53-4.48] was predicted compared with patients with below-median levels of MIP-1β. However, the strongest risk prediction was achieved by assessing MIP-1β and fibrinogen together. After adjusting for traditional risk factors, a multivariate Cox proportional hazards analysis showed that patients with both MIP-1β and fibrinogen above the median had a 4.37-fold risk of a MACE (95% CI 1.89-10.11). CONCLUSION MIP-1β accurately predicted MACEs. Considering MIP-1β and fibrinogen together may improve long-term risk assessment. These two biomarkers have a synergistic effect for assessing long-term risk in patients with intermediate coronary artery lesions.
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Affiliation(s)
- Feng Xu
- Beijing Anzhen Hospital, Capital Medical University, 2 Anzhen Road, Beijing, China
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Osteoprotegerin, but not osteopontin, as a potential predictor of vascular calcification in normotensive subjects. Hypertens Res 2012; 35:531-8. [PMID: 22278625 DOI: 10.1038/hr.2011.231] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
We conducted a cross-sectional observation study that included 500 asymptomatic subjects to investigate the relationship between bone metabolism and coronary artery calcification (CAC) in hypertensive conditions. Osteoprotegerin (OPG) and osteopontin (OPN) levels and their associations with hypertension were analyzed to predict CAC in 316 subjects. Multislice computed tomography was used to quantify CAC. Multivariate analysis of variance was used to test the non-interactive effects of hypertension, CAC severity and biomarker levels, and the logistic regression model was applied to predict the risk of CAC. OPG and OPN concentrations were significantly higher in the hypertensive than the normotensive subjects, at 3.0 (2.3-4.0) pmol l(-1) and 51 (21-136) ng ml(-1) vs. 2.4 (2.0-3.0) pmol l(-1) and 41 (13-63) ng ml(-1), respectively. The OPG level, but not OPN level, increased with age (r = 0.29; P = 0.0001). Zero or minimal CAC (<10 Agatston units (AU)) was observed in 63% of the subjects, mild (11-100 AU) in 17%, moderate (101-400 AU) in 12% and severe (401-1000 AU)-to-extensive (>1000 AU) in 8%. In hypertensive subjects, only glomerular filtration rate (GFR) (β = -0.67) and gender (β = 0.52) were significant predictors for CAC (R = 0.68). In normotensive patients, GFR (β = -0.81), gender (β = 0.48) and log-transformed OPG levels (β = 0.15) were significant predictors for CAC. OPG levels were associated with an increased risk of CAC in normotensive subjects only (odds ratio: 3.37; 95% confidence interval (1.63-6.57); P = 0.0002). OPG predicted a premature state of vascular calcification in asymptomatic normotensive individuals, and renal function significantly contributed to this process in both hypertensive and normotensive subjects.
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