1
|
Elzehery R, El-Hafez HA, Elsehely I, Barakat A, Foda EAE, Hendawy SR, Gameil MA, Nada HS, El-Sebaie A. Association of the E23K (rs5219) polymorphism in the potassium channel (KCNJ11) gene with diabetic neuropathy in type 2 diabetes. Gene 2024; 921:148525. [PMID: 38703869 DOI: 10.1016/j.gene.2024.148525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Revised: 04/14/2024] [Accepted: 05/01/2024] [Indexed: 05/06/2024]
Affiliation(s)
- Rasha Elzehery
- Clinical Pathology Department, Faculty of Medicine, Mansoura University, Mansoura, Dakahlia, Egypt.
| | - Hala Abd El-Hafez
- Internal Medicine Department, Endocrinology Unit, Faculty of Medicine, Mansoura University, Mansoura, Dakahlia, Egypt.
| | - Ibrahim Elsehely
- Internal Medicine Department, Endocrinology Unit, Faculty of Medicine, Mansoura University, Mansoura, Dakahlia, Egypt.
| | - Amira Barakat
- Internal Medicine Department, Endocrinology Unit, Faculty of Medicine, Mansoura University, Mansoura, Dakahlia, Egypt.
| | - Engy Ahmed Ebrahim Foda
- Clinical Pathology Department, Faculty of Medicine, Mansoura University, Mansoura, Dakahlia, Egypt.
| | - Shimaa Rabea Hendawy
- Clinical Pathology Department, Faculty of Medicine, Mansoura University, Mansoura, Dakahlia, Egypt.
| | - Mohammed Ali Gameil
- Internal Medicine Department, Endocrinology Unit, Faculty of Medicine, Mansoura University, Mansoura, Dakahlia, Egypt.
| | - Hyam Sameh Nada
- Clinical Pathology Department, Faculty of Medicine, Mansoura University, Mansoura, Dakahlia, Egypt.
| | - Ahmed El-Sebaie
- Clinical Pathology Department, Faculty of Medicine, Mansoura University, Mansoura, Dakahlia, Egypt.
| |
Collapse
|
2
|
Chowdhury MZI, Naeem I, Quan H, Leung AA, Sikdar KC, O’Beirne M, Turin TC. Prediction of hypertension using traditional regression and machine learning models: A systematic review and meta-analysis. PLoS One 2022; 17:e0266334. [PMID: 35390039 PMCID: PMC8989291 DOI: 10.1371/journal.pone.0266334] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 03/19/2022] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE We aimed to identify existing hypertension risk prediction models developed using traditional regression-based or machine learning approaches and compare their predictive performance. METHODS We systematically searched MEDLINE, EMBASE, Web of Science, Scopus, and the grey literature for studies predicting the risk of hypertension among the general adult population. Summary statistics from the individual studies were the C-statistic, and a random-effects meta-analysis was used to obtain pooled estimates. The predictive performance of pooled estimates was compared between traditional regression-based models and machine learning-based models. The potential sources of heterogeneity were assessed using meta-regression, and study quality was assessed using the PROBAST (Prediction model Risk Of Bias ASsessment Tool) checklist. RESULTS Of 14,778 articles, 52 articles were selected for systematic review and 32 for meta-analysis. The overall pooled C-statistics was 0.75 [0.73-0.77] for the traditional regression-based models and 0.76 [0.72-0.79] for the machine learning-based models. High heterogeneity in C-statistic was observed. The age (p = 0.011), and sex (p = 0.044) of the participants and the number of risk factors considered in the model (p = 0.001) were identified as a source of heterogeneity in traditional regression-based models. CONCLUSION We attempted to provide a comprehensive evaluation of hypertension risk prediction models. Many models with acceptable-to-good predictive performance were identified. Only a few models were externally validated, and the risk of bias and applicability was a concern in many studies. Overall discrimination was similar between models derived from traditional regression analysis and machine learning methods. More external validation and impact studies to implement the hypertension risk prediction model in clinical practice are required.
Collapse
Affiliation(s)
- Mohammad Ziaul Islam Chowdhury
- Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Department of Family Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Department of Psychiatry, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Iffat Naeem
- Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Hude Quan
- Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Alexander A. Leung
- Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Khokan C. Sikdar
- Health Status Assessment, Surveillance, and Reporting, Public Health Surveillance and Infrastructure, Population, Public and Indigenous Health, Alberta Health Services, Calgary, Alberta, Canada
| | - Maeve O’Beirne
- Department of Family Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Tanvir C. Turin
- Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Department of Family Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| |
Collapse
|
3
|
Zhancheng W, Wenhui J, Yun J, Lingli W, Huijun H, Yan S, Jin L. The dominant models of KCNJ11 E23K and KCNMB1 E65K are associated with essential hypertension (EH) in Asian: Evidence from a meta-analysis. Medicine (Baltimore) 2019; 98:e15828. [PMID: 31169684 PMCID: PMC6571424 DOI: 10.1097/md.0000000000015828] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND The K channel, subfamily J, member-11 (KCNJ11) E23K and β1 subunit of large-conductance Ca-activated K channel (KCNMB1) E65K polymorphisms were shown to be associated with the risk of essential hypertension (EH). However, the results were inconclusive with relatively small sample size. Thus, we carried out a meta-analysis to investigate the genetic association between KCNJ11 E23K and KCNMB1 E65K polymorphisms and essential hypertension risk. METHODS Relative studies were collected using PubMed, Web of Science, the Cochrane Library databases, Chinese National Knowledge Infrastructure and Embase databases. Pooled odds ratios with 95% confidence intervals were used to assess the strength of associations. RESULTS The dominant models of KCNJ11 E23K (P = .006, OR [95%CI] = 0.45 [0.25, 0.79]) and KCNMB1 E65K (P = .04, OR [95%CI] = 0.91 [0.83, 1.00]) were significantly associated with essential hypertension risk. No significant association was detected between the allelic and recessive models of KCNJ11 E23K and KCNMB1 E65K and the susceptibility of EH. Subgroup analysis stratified by ethnicity showed that the dominant model of KCNMB1 E65K was associated with EH risk in Asian population (P = .003, OR [95%CI] = 0.83 [0.74, 0.94]), but not in Caucasian (P = .74, OR [95%CI] = 1.02 [0.89, 1.18]). CONCLUSIONS The dominant model of KCNJ11 E23K and KCNMB1 E65K might be susceptible factors for essential hypertension. To confirm this result, large-scale case-control studies with more subjects are necessary.
Collapse
Affiliation(s)
- Wang Zhancheng
- Department of Cardiology, Shanghai Eighth People's Hospital
| | - Ji Wenhui
- Department of Internal medicine, Huajing Community Health Service Centre for Xuhui District, Shanghai, China
| | - Jiang Yun
- Department of Cardiology, Shanghai Eighth People's Hospital
| | - Wang Lingli
- Department of Cardiology, Shanghai Eighth People's Hospital
| | - Huang Huijun
- Department of Cardiology, Shanghai Eighth People's Hospital
| | - Shen Yan
- Department of Cardiology, Shanghai Eighth People's Hospital
| | - Li Jin
- Department of Cardiology, Shanghai Eighth People's Hospital
| |
Collapse
|
4
|
Genetic variants of cGMP-dependent protein kinase genes and salt sensitivity of blood pressure: the GenSalt study. J Hum Hypertens 2018; 33:62-68. [DOI: 10.1038/s41371-018-0099-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 07/16/2018] [Accepted: 08/06/2018] [Indexed: 11/08/2022]
|
5
|
Oliveira-Paula GH, Lacchini R, Pinheiro LC, Ferreira GC, Luizon MR, Garcia WNP, Garcia LV, Tanus-Santos JE. Endothelial nitric oxide synthase polymorphisms affect the changes in blood pressure and nitric oxide bioavailability induced by propofol. Nitric Oxide 2018; 75:77-84. [PMID: 29496565 DOI: 10.1016/j.niox.2018.02.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Revised: 02/14/2018] [Accepted: 02/23/2018] [Indexed: 11/26/2022]
Abstract
Propofol anesthesia is usually accompanied by hypotension, which is at least in part related to enhanced endothelial nitric oxide synthase (NOS3)-derived NO bioavailability. We examined here whether NOS3 polymorphisms (rs2070744, 4b/4a VNTR, rs3918226 and rs1799983) and haplotypes affect the changes in blood pressure and NO bioavailability induced by propofol. Venous blood samples were collected from 168 patients at baseline and after 10 min of anesthesia with propofol 2 mg/kg administered intravenously by bolus injection. Genotypes were determined by polymerase chain reaction and haplotype frequencies were estimated. Nitrite concentrations were measured by using an ozone-based chemiluminescence assay, while NOx (nitrites + nitrates) levels were determined by using the Griess reaction. We found that CT + TT genotypes for the rs3918226 polymorphism, the ba + aa genotypes for the 4b/4a VNTR and the CTbT haplotype were associated with lower decreases in blood pressure and lower increases in nitrite levels after propofol anesthesia. On the other hand, the TCbT and CCbT haplotypes were associated with more intense decreases in blood pressure and higher increases in nitrite levels in response to propofol. Our results suggest that NOS3 polymorphisms and haplotypes influence the hypotensive responses to propofol, possibly by affecting NO bioavailability.
Collapse
Affiliation(s)
- Gustavo H Oliveira-Paula
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Riccardo Lacchini
- Department of Psychiatric Nursing and Human Sciences, Ribeirao Preto College of Nursing, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Lucas C Pinheiro
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Graziele C Ferreira
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Marcelo R Luizon
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Waynice N P Garcia
- Department of Biomechanics, Medicine and Rehabilitation of the Locomotor System, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Luis V Garcia
- Department of Biomechanics, Medicine and Rehabilitation of the Locomotor System, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Jose E Tanus-Santos
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil.
| |
Collapse
|
6
|
Luo X, Liu J, Zhou H, Chen L. Apelin/APJ system: A critical regulator of vascular smooth muscle cell. J Cell Physiol 2018; 233:5180-5188. [PMID: 29215755 DOI: 10.1002/jcp.26339] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Accepted: 11/28/2017] [Indexed: 12/28/2022]
Abstract
APJ, an orphan G protein-coupled receptor, is first identified through homology cloning in 1993. Apelin is endogenous ligand of APJ extracted from bovine stomach tissue in 1998. Apelin/APJ system is widely expressed in many kinds of cells such as endothelial cells, cardiomyocytes, especially vascular smooth muscle cell. Vascular smooth muscle cell (VSMC), an integral part of the vascular wall, takes part in many normal physiological processes. Our experiment firstly finds that apelin/APJ system enhances VSMC proliferation by ERK1/2-cyclin D1 signal pathway. Accumulating studies also show that apelin/APJ system plays a pivotal role in mediating the function of VSMC. In this paper, we review the exact role of apelin/APJ system in VSMC, including induction of proliferation and migration, enhance of contraction and relaxation, inhibition of calcification. Furthermore, we discuss the role of apelin/APJ system in vascular diseases, such as atherosclerosis, hypertension, and chronic kidney disease (CKD) from the point of VSMC. Above all, apelin/APJ system is a promising target for managing vascular disease.
Collapse
Affiliation(s)
- Xuling Luo
- Institute of Pharmacy and Pharmacology, University of South China, Hengyang, China
| | - Jiaqi Liu
- Institute of Pharmacy and Pharmacology, University of South China, Hengyang, China
| | - Hong Zhou
- Institute of Pharmacy and Pharmacology, University of South China, Hengyang, China
| | - Linxi Chen
- Institute of Pharmacy and Pharmacology, University of South China, Hengyang, China
| |
Collapse
|
7
|
Han YY, Wang LJ, Zhang L, Zhang WW, Ma KT, Li L, Si JQ. Association between potassium channel SNPs and essential hypertension in Xinjiang Kazak Chinese patients. Exp Ther Med 2017; 14:1999-2006. [PMID: 28962116 PMCID: PMC5609208 DOI: 10.3892/etm.2017.4734] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Accepted: 05/05/2017] [Indexed: 12/27/2022] Open
Abstract
The aim of the present study was to examine whether single-nucleotide polymorphisms (SNPs) of β1 subunit of large-conductance Ca2+-activated K+ channel (KCNMB1) and inwardly rectifying K+ channel, subfamily J, member-11 (KCNJ11) are associated with essential hypertension (EH) in Xinjiang Kazak Chinese patients. A polymerase chain reaction-restriction fragment length polymorphism technique was applied to detect the distribution of selected alleles and genotype frequencies in a cohort of Xinjiang Kazak Chinese patients. Samples from 267 patients with EH and 259 normotensive (NT) controls were analyzed. An unconditional logistic regression analysis was used to estimate the odds ratio and 95% confidence interval of the risk factors that are associated with the development of EH. Genotype and allele frequency analyses revealed that the frequency of genotypes KCNJ11-rs2285676 and KCNMB1-rs11739136 was not significantly different between the EH and NT groups. Individuals carrying the GG genotype of KCNJ11-rs5219 had a 2.08 times higher risk of having EH than individuals carrying the GA+AA genotype of KCNJ11-rs5219. Furthermore, the G allele frequency of KCNJ11-rs5219 in the EH group was significantly higher than that of the NT group (P=0.048). Additionally, logistic regression analysis revealed that the body weight and GG genotype of KCNJ11-rs5219 were positively associated with EH in Xinjiang Kazak Chinese patients (P<0.01).
Collapse
Affiliation(s)
- Yuan-Yuan Han
- Department of Physiology, Medical College of Shihezi University, Shihezi, Xinjiang 832002, P.R. China
| | - Li-Jie Wang
- Department of Physiology, Medical College of Shihezi University, Shihezi, Xinjiang 832002, P.R. China
| | - Liang Zhang
- Department of Physiology, Medical College of Shihezi University, Shihezi, Xinjiang 832002, P.R. China.,The Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Medical College of Shihezi University, Shihezi, Xinjiang 832002, P.R. China
| | - Wen-Wen Zhang
- Department of Physiology, Medical College of Shihezi University, Shihezi, Xinjiang 832002, P.R. China
| | - Ke-Tao Ma
- Department of Physiology, Medical College of Shihezi University, Shihezi, Xinjiang 832002, P.R. China.,The Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Medical College of Shihezi University, Shihezi, Xinjiang 832002, P.R. China
| | - Li Li
- Department of Physiology, Medical College of Shihezi University, Shihezi, Xinjiang 832002, P.R. China.,The Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Medical College of Shihezi University, Shihezi, Xinjiang 832002, P.R. China
| | - Jun-Qiang Si
- Department of Physiology, Medical College of Shihezi University, Shihezi, Xinjiang 832002, P.R. China.,The Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Medical College of Shihezi University, Shihezi, Xinjiang 832002, P.R. China.,Department of Physiology, Huazhong University of Science and Technology of Basic Medical Sciences, Wuhan, Hubei 430070, P.R. China.,Department of Physiology, Wuhan University School of Basic Medical Sciences, Wuhan, Hubei 430070, P.R. China
| |
Collapse
|
8
|
Kohli S, Kumar R, Gupta M, Tyagi S, Pasha MAQ. Impact of interactions between risk alleles on clinical endpoints in hypertension. HEART ASIA 2016; 8:83-9. [PMID: 27326240 DOI: 10.1136/heartasia-2016-010723] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 03/28/2016] [Accepted: 04/08/2016] [Indexed: 12/20/2022]
Abstract
OBJECTIVE Impairment of the renin-angiotensinogen-aldosterone system (RAAS), one of the characteristics of essential hypertension (EH), imbalances vascular homeostasis. Despite inconsistent reports on individual single nucleotide polymorphisms (SNPs) as a major predictor of EH, interactions among RAAS genetic variants are rarely investigated. METHODS Using SNP markers, we studied potential interactions between angiotensin 1 converting enzyme (ACE), angiotensinogen (AGT), angiotensin II-type 1 receptor (AGTR1), and α adducin (ADD1) variants and their correlation with clinical endpoints in 545 individuals with hypertension and 400 age- and ethnicity-matched unrelated controls. Generalised multifactor dimensionality reduction (GMDR) analysis identified the models for genotype interaction. RESULTS Although the results on single genes were significant, gene-gene interactions were more reliable and promising as markers in predisposing hypertension. The best models to represent association of multi-locus interactions with augmented hypertension susceptibility were: (a) within gene 4-locus model comprised of AGT SNPs -217G/A, -20A/C, -6G/A and 235M/T (p=0.022, OR 6.1); and (b) between genes 5-locus model comprised of AGT -217G/A, -20A/C, -6G/A, 235M/T and ACE I/D (p=0.05, OR 4.6). Stratification of 4- and 5-locus GMDR models on the basis of risk alleles from ≤1 to ≥7 increased the ORs from 2.8 to 36.1 and from 0.9 to 16.1, respectively. Moreover, compared to ≤1 risk alleles the ≥7 interacting risk alleles in both 4- and 5-locus models showed an increment of 14.2% and 11.1% in systolic blood pressure, 7.7% and 1.1% in diastolic blood pressure, and 10.5% and 5.1% in mean arterial pressure, respectively, in patients. CONCLUSIONS Interactions among the genetic loci of RAAS components may be used as a predictor for susceptibility to hypertension.
Collapse
Affiliation(s)
- Samantha Kohli
- Genomics and Molecular Medicine, CSIR-Institute of Genomics and Integrative Biology, New Delhi, Delhi, India; Academy of Scientific and Innovative Research, New Delhi, Delhi, India
| | - Rahul Kumar
- Genomics and Molecular Medicine, CSIR-Institute of Genomics and Integrative Biology, New Delhi, Delhi, India; Division of Pulmonary Sciences and Critical Care Medicine, School of Medicine, University of Colorado, Denver, USA
| | - Mohit Gupta
- Department of Cardiology , G.B. Pant Hospital , New Delhi, Delhi , India
| | - Sanjay Tyagi
- Department of Cardiology , G.B. Pant Hospital , New Delhi, Delhi , India
| | - M A Qadar Pasha
- Genomics and Molecular Medicine, CSIR-Institute of Genomics and Integrative Biology, New Delhi, Delhi, India; Academy of Scientific and Innovative Research, New Delhi, Delhi, India
| |
Collapse
|
9
|
Oliveira-Paula GH, Lacchini R, Luizon MR, Fontana V, Silva PS, Biagi C, Tanus-Santos JE. Endothelial nitric oxide synthase tagSNPs influence the effects of enalapril in essential hypertension. Nitric Oxide 2016; 55-56:62-9. [DOI: 10.1016/j.niox.2016.03.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Revised: 03/18/2016] [Accepted: 03/22/2016] [Indexed: 11/25/2022]
|
10
|
Eadon MT, Chapman AB. A Physiologic Approach to the Pharmacogenomics of Hypertension. Adv Chronic Kidney Dis 2016; 23:91-105. [PMID: 26979148 DOI: 10.1053/j.ackd.2016.02.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Hypertension is a multifactorial condition with diverse physiological systems contributing to its pathogenesis. Individuals exhibit significant variation in their response to antihypertensive agents. Traditional markers, such as age, gender, diet, plasma renin level, and ethnicity, aid in drug selection. However, this review explores the contribution of genetics to facilitate antihypertensive agent selection and predict treatment efficacy. The findings, reproducibility, and limitations of published studies are examined, with emphasis placed on candidate genetic variants affecting drug metabolism, the renin-angiotensin system, adrenergic signalling, and renal sodium reabsorption. Single-nucleotide polymorphisms identified and replicated in unbiased genome-wide association studies of hypertension treatment are reviewed to illustrate the evolving understanding of the disease's complex and polygenic pathophysiology. Implementation efforts at academic centers seek to overcome barriers to the broad adoption of pharmacogenomics in the treatment of hypertension. The level of evidence required to support the implementation of pharmacogenomics in clinical practice is considered.
Collapse
|
11
|
Osei-Owusu P, Blumer KJ. Regulator of G Protein Signaling 2: A Versatile Regulator of Vascular Function. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2015; 133:77-92. [PMID: 26123303 DOI: 10.1016/bs.pmbts.2015.02.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Regulators of G protein signaling (RGS) proteins of the B/R4 family are widely expressed in the cardiovascular system where their role in fine-tuning G protein signaling is critical to maintaining homeostasis. Among members of this family, RGS2 and RGS5 have been shown to play key roles in cardiac and smooth muscle function by tightly regulating signaling pathways that are activated through Gq/11 and Gi/o classes of heterotrimeric G proteins. This chapter reviews accumulating evidence supporting a key role for RGS2 in vascular function and the implication of changes in RGS2 function and/or expression in the pathogenesis of blood pressure disorders, particularly hypertension. With such understanding, RGS2 and the signaling pathways it controls may emerge as novel targets for developing next-generation antihypertensive drugs/agents.
Collapse
Affiliation(s)
- Patrick Osei-Owusu
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, Pennsylvania, USA.
| | - Kendall J Blumer
- Department of Cell Biology and Physiology, Washington University School of Medicine, St. Louis, Missouri, USA
| |
Collapse
|
12
|
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.
Collapse
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;
| |
Collapse
|
13
|
Two functional polymorphisms of ROCK2 enhance arterial stiffening through inhibiting its activity and expression. J Mol Cell Cardiol 2014; 79:180-6. [PMID: 25481646 DOI: 10.1016/j.yjmcc.2014.11.023] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Revised: 11/22/2014] [Accepted: 11/24/2014] [Indexed: 11/23/2022]
Abstract
Derangement of Rho-associated kinases (ROCKs) has been related to coronary artery disease and stroke. ROCK2, rather than ROCK1, plays a predominant role in vascular contractility. The present study aims to test (1) the associations between ROCK2 single nucleotide polymorphisms (SNPs) and arterial stiffness, and (2) the molecular mechanism accounting for their effects. Stiffness parameters including beta (β), elasticity modulus (Ep) and pulse wave velocity (PWV) were obtained by carotid ultrasonography. Seven tagging SNPs of ROCK2 were initially genotyped in 856 subjects and significant SNPs were replicated in another group of 527 subjects. Two SNPs in complete linkage disequilibrium were found to be significantly associated with arterial stiffness. The major alleles of rs978906 (A allele) and rs9808232 (C allele) were associated with stiffer arteries. SNP rs978906 was predicted to influence microRNA(miR)-1183 binding to ROCK2, while rs9808232 causes amino acid substitution. To determine their functional impact, plasmid constructs carrying different alleles of the significant SNPs were created. Compared to rs978906G-allele constructs, cells transfected with rs978906A-allele constructs had higher baseline luciferase activities and were less responsive to miR-1183 changes. Oxidized-low density lipoprotein (Ox-LDL) suppressed miR-1183 levels and increased ROCK2 protein amounts. For rs9808232, cells transfected with C-allele constructs had significantly higher ROCK activities than those with A-allele constructs. Leukocyte ROCK activities were further measured in 52 healthy subjects. The average ROCK activity was highest in human subjects with CC genotype at rs9808232, followed by those with AC and lowest in AA. Taken together, the present study showed that two functional SNPs of ROCK2 increase susceptibility of arterial stiffness in the Chinese population. Non-synonymous SNP rs9808232 influences ROCK2 activity, while 3' UTR SNP rs978906 affects the ROCK2 protein synthesis by interfering miR-1183 binding.
Collapse
|
14
|
Raveh A, Schultz PJ, Aschermann L, Carpenter C, Tamayo-Castillo G, Cao S, Clardy J, Neubig RR, Sherman DH, Sjögren B. Identification of protein kinase C activation as a novel mechanism for RGS2 protein upregulation through phenotypic screening of natural product extracts. Mol Pharmacol 2014; 86:406-16. [PMID: 25086086 DOI: 10.1124/mol.114.092403] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Biochemical high-throughput screening is widely used in drug discovery, using a variety of small molecule libraries. However, broader screening strategies may be more beneficial to identify novel biologic mechanisms. In the current study we used a β-galactosidase complementation method to screen a selection of microbial-derived pre-fractionated natural product extracts for those that increase regulator of G protein signaling 2 (RGS2) protein levels. RGS2 is a member of a large family of proteins that all regulate signaling through G protein-coupled receptors (GPCRs) by accelerating GTPase activity on active Gα as well as through other mechanisms. RGS2(-/-) mice are hypertensive, show increased anxiety, and are prone to heart failure. RGS2 has a very short protein half-life due to rapid proteasomal degradation, and we propose that enhancement of RGS2 protein levels could be a beneficial therapeutic strategy. Bioassay-guided fractionation of one of the hit strains yielded a pure compound, Indolactam V, a known protein kinase C (PKC) activator, which selectively increased RGS2 protein levels in a time- and concentration-dependent manner. Similar results were obtained with phorbol 12-myristate 13-acetate as well as activation of the Gq-coupled muscarinic M3 receptor. The effect on RGS2 protein levels was blocked by the nonselective PKC inhibitor Gö6983 (3-[1-[3-(dimethylamino)propyl]-5-methoxy-1H-indol-3-yl]-4-(1H-indol-3-yl)-1H-pyrrole-2,5-dione), the PKCβ-selective inhibitor Ruboxastaurin, as well as small interfering RNA-mediated knockdown of PKCβ. Indolactam V-mediated increases in RGS2 protein levels also had functional effects on GPCR signaling. This study provides important proof-of-concept for our screening strategy and could define a negative feedback mechanism in Gq/Phospholipase C signaling through RGS2 protein upregulation.
Collapse
Affiliation(s)
- Avi Raveh
- Life Sciences Institute, University of Michigan, Ann Arbor, Michigan (A.R., P.J.S., D.H.S.); Department of Pharmacology & Toxicology, Michigan State University, East Lansing, Michigan (L.A., R.R.N., B.S.); Department of Pharmacology (C.C.), Department of Medicinal Chemistry (D.H.S.), Department of Microbiology and Immunology (D.H.S.), Department of Chemistry (D.H.S.), Center for Chemical Genomics, University of Michigan, Ann Arbor, Michigan (D.H.S.); Unidad Estrategica de Bioprospección, Instituto Nacional de Biodiversidad, Santo Domingo de Heredia, Costa Rica & CIPRONA, Escuela de Química, Universidad de Costa Rica, San Pedro, Costa Rica (G.T-C.); Harvard Medical School, Boston, Massachusetts (S.C., J.C.); and University of Hawaii Cancer Center, Honolulu, Hawaii (S.C.)
| | - Pamela J Schultz
- Life Sciences Institute, University of Michigan, Ann Arbor, Michigan (A.R., P.J.S., D.H.S.); Department of Pharmacology & Toxicology, Michigan State University, East Lansing, Michigan (L.A., R.R.N., B.S.); Department of Pharmacology (C.C.), Department of Medicinal Chemistry (D.H.S.), Department of Microbiology and Immunology (D.H.S.), Department of Chemistry (D.H.S.), Center for Chemical Genomics, University of Michigan, Ann Arbor, Michigan (D.H.S.); Unidad Estrategica de Bioprospección, Instituto Nacional de Biodiversidad, Santo Domingo de Heredia, Costa Rica & CIPRONA, Escuela de Química, Universidad de Costa Rica, San Pedro, Costa Rica (G.T-C.); Harvard Medical School, Boston, Massachusetts (S.C., J.C.); and University of Hawaii Cancer Center, Honolulu, Hawaii (S.C.)
| | - Lauren Aschermann
- Life Sciences Institute, University of Michigan, Ann Arbor, Michigan (A.R., P.J.S., D.H.S.); Department of Pharmacology & Toxicology, Michigan State University, East Lansing, Michigan (L.A., R.R.N., B.S.); Department of Pharmacology (C.C.), Department of Medicinal Chemistry (D.H.S.), Department of Microbiology and Immunology (D.H.S.), Department of Chemistry (D.H.S.), Center for Chemical Genomics, University of Michigan, Ann Arbor, Michigan (D.H.S.); Unidad Estrategica de Bioprospección, Instituto Nacional de Biodiversidad, Santo Domingo de Heredia, Costa Rica & CIPRONA, Escuela de Química, Universidad de Costa Rica, San Pedro, Costa Rica (G.T-C.); Harvard Medical School, Boston, Massachusetts (S.C., J.C.); and University of Hawaii Cancer Center, Honolulu, Hawaii (S.C.)
| | - Colleen Carpenter
- Life Sciences Institute, University of Michigan, Ann Arbor, Michigan (A.R., P.J.S., D.H.S.); Department of Pharmacology & Toxicology, Michigan State University, East Lansing, Michigan (L.A., R.R.N., B.S.); Department of Pharmacology (C.C.), Department of Medicinal Chemistry (D.H.S.), Department of Microbiology and Immunology (D.H.S.), Department of Chemistry (D.H.S.), Center for Chemical Genomics, University of Michigan, Ann Arbor, Michigan (D.H.S.); Unidad Estrategica de Bioprospección, Instituto Nacional de Biodiversidad, Santo Domingo de Heredia, Costa Rica & CIPRONA, Escuela de Química, Universidad de Costa Rica, San Pedro, Costa Rica (G.T-C.); Harvard Medical School, Boston, Massachusetts (S.C., J.C.); and University of Hawaii Cancer Center, Honolulu, Hawaii (S.C.)
| | - Giselle Tamayo-Castillo
- Life Sciences Institute, University of Michigan, Ann Arbor, Michigan (A.R., P.J.S., D.H.S.); Department of Pharmacology & Toxicology, Michigan State University, East Lansing, Michigan (L.A., R.R.N., B.S.); Department of Pharmacology (C.C.), Department of Medicinal Chemistry (D.H.S.), Department of Microbiology and Immunology (D.H.S.), Department of Chemistry (D.H.S.), Center for Chemical Genomics, University of Michigan, Ann Arbor, Michigan (D.H.S.); Unidad Estrategica de Bioprospección, Instituto Nacional de Biodiversidad, Santo Domingo de Heredia, Costa Rica & CIPRONA, Escuela de Química, Universidad de Costa Rica, San Pedro, Costa Rica (G.T-C.); Harvard Medical School, Boston, Massachusetts (S.C., J.C.); and University of Hawaii Cancer Center, Honolulu, Hawaii (S.C.)
| | - Shugeng Cao
- Life Sciences Institute, University of Michigan, Ann Arbor, Michigan (A.R., P.J.S., D.H.S.); Department of Pharmacology & Toxicology, Michigan State University, East Lansing, Michigan (L.A., R.R.N., B.S.); Department of Pharmacology (C.C.), Department of Medicinal Chemistry (D.H.S.), Department of Microbiology and Immunology (D.H.S.), Department of Chemistry (D.H.S.), Center for Chemical Genomics, University of Michigan, Ann Arbor, Michigan (D.H.S.); Unidad Estrategica de Bioprospección, Instituto Nacional de Biodiversidad, Santo Domingo de Heredia, Costa Rica & CIPRONA, Escuela de Química, Universidad de Costa Rica, San Pedro, Costa Rica (G.T-C.); Harvard Medical School, Boston, Massachusetts (S.C., J.C.); and University of Hawaii Cancer Center, Honolulu, Hawaii (S.C.)
| | - Jon Clardy
- Life Sciences Institute, University of Michigan, Ann Arbor, Michigan (A.R., P.J.S., D.H.S.); Department of Pharmacology & Toxicology, Michigan State University, East Lansing, Michigan (L.A., R.R.N., B.S.); Department of Pharmacology (C.C.), Department of Medicinal Chemistry (D.H.S.), Department of Microbiology and Immunology (D.H.S.), Department of Chemistry (D.H.S.), Center for Chemical Genomics, University of Michigan, Ann Arbor, Michigan (D.H.S.); Unidad Estrategica de Bioprospección, Instituto Nacional de Biodiversidad, Santo Domingo de Heredia, Costa Rica & CIPRONA, Escuela de Química, Universidad de Costa Rica, San Pedro, Costa Rica (G.T-C.); Harvard Medical School, Boston, Massachusetts (S.C., J.C.); and University of Hawaii Cancer Center, Honolulu, Hawaii (S.C.)
| | - Richard R Neubig
- Life Sciences Institute, University of Michigan, Ann Arbor, Michigan (A.R., P.J.S., D.H.S.); Department of Pharmacology & Toxicology, Michigan State University, East Lansing, Michigan (L.A., R.R.N., B.S.); Department of Pharmacology (C.C.), Department of Medicinal Chemistry (D.H.S.), Department of Microbiology and Immunology (D.H.S.), Department of Chemistry (D.H.S.), Center for Chemical Genomics, University of Michigan, Ann Arbor, Michigan (D.H.S.); Unidad Estrategica de Bioprospección, Instituto Nacional de Biodiversidad, Santo Domingo de Heredia, Costa Rica & CIPRONA, Escuela de Química, Universidad de Costa Rica, San Pedro, Costa Rica (G.T-C.); Harvard Medical School, Boston, Massachusetts (S.C., J.C.); and University of Hawaii Cancer Center, Honolulu, Hawaii (S.C.)
| | - David H Sherman
- Life Sciences Institute, University of Michigan, Ann Arbor, Michigan (A.R., P.J.S., D.H.S.); Department of Pharmacology & Toxicology, Michigan State University, East Lansing, Michigan (L.A., R.R.N., B.S.); Department of Pharmacology (C.C.), Department of Medicinal Chemistry (D.H.S.), Department of Microbiology and Immunology (D.H.S.), Department of Chemistry (D.H.S.), Center for Chemical Genomics, University of Michigan, Ann Arbor, Michigan (D.H.S.); Unidad Estrategica de Bioprospección, Instituto Nacional de Biodiversidad, Santo Domingo de Heredia, Costa Rica & CIPRONA, Escuela de Química, Universidad de Costa Rica, San Pedro, Costa Rica (G.T-C.); Harvard Medical School, Boston, Massachusetts (S.C., J.C.); and University of Hawaii Cancer Center, Honolulu, Hawaii (S.C.)
| | - Benita Sjögren
- Life Sciences Institute, University of Michigan, Ann Arbor, Michigan (A.R., P.J.S., D.H.S.); Department of Pharmacology & Toxicology, Michigan State University, East Lansing, Michigan (L.A., R.R.N., B.S.); Department of Pharmacology (C.C.), Department of Medicinal Chemistry (D.H.S.), Department of Microbiology and Immunology (D.H.S.), Department of Chemistry (D.H.S.), Center for Chemical Genomics, University of Michigan, Ann Arbor, Michigan (D.H.S.); Unidad Estrategica de Bioprospección, Instituto Nacional de Biodiversidad, Santo Domingo de Heredia, Costa Rica & CIPRONA, Escuela de Química, Universidad de Costa Rica, San Pedro, Costa Rica (G.T-C.); Harvard Medical School, Boston, Massachusetts (S.C., J.C.); and University of Hawaii Cancer Center, Honolulu, Hawaii (S.C.)
| |
Collapse
|
15
|
Abstract
Arterial hypertension is a major health problem, accounting for 12 % of the global death rate. A large proportion of patients treated for high blood pressure do not reach target blood pressure values. The question arises if new antihypertensive drugs could improve present hypertension treatment. Rho-kinases (ROCKs) are ubiquitously expressed serine/threonine kinases and involved in a variety of cell functions. They contribute to the pathogenesis of human and experimental hypertension. Pharmacological ROCK inhibition has been shown to effectively lower blood pressure in patients and experimental animals. Progress has been made towards the understanding on how non-selective ROCK inhibitors lower arterial pressure and efforts are currently undertaken to develop ROCK inhibitors to improve their specificity and isoenzyme selectivity. If introduction of ROCK inhibitors for the treatment of high blood pressure can significantly advance currently available options of antihypertensive pharmacotherapy awaits further experimental and clinical research.
Collapse
Affiliation(s)
- Olaf Grisk
- Department of Physiology, University of Greifswald, Greifswalder Str. 11c, 17495, Greifswald, Karlsburg, Germany,
| |
Collapse
|
16
|
Demiryürek S, Okumus S, Bozgeyik İ, Oztuzcu S, Coskun E, Mat E, Durucu E, Tatar MG, Erbagci İ, Gürler B, Demiryürek AT. Investigation of the Rho-kinase Gene Polymorphism in Primary Open-angle Glaucoma. Ophthalmic Genet 2014; 37:9-13. [DOI: 10.3109/13816810.2014.895016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
17
|
Citterio L, Ferrandi M, Delli Carpini S, Simonini M, Kuznetsova T, Molinari I, Dell' Antonio G, Lanzani C, Merlino L, Brioni E, Staessen JA, Bianchi G, Manunta P. cGMP-dependent protein kinase 1 polymorphisms underlie renal sodium handling impairment. Hypertension 2013; 62:1027-33. [PMID: 24060892 DOI: 10.1161/hypertensionaha.113.01628] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Defective pressure-natriuresis related to abnormalities in the natriuretic response has been associated with hypertension development. A major signaling pathway mediating pressure natriuresis involves the cGMP-dependent protein kinase 1 (PRKG1) that, once activated by Src kinase, inhibits renal Na(+) reabsorption via a direct action on basolateral Na-K ATPase and luminal Na-H exchanger type 3, as shown in renal tubuli of animals. Because a clear implication of PRKG1 in humans is still lacking, here we addressed whether PRKG1 polymorphisms affect pressure-natriuresis in patients. Naive hypertensive patients (n = 574), genotyped for PRKG1 rs1904694, rs7897633, and rs7905063 single nucleotide polymorphisms (SNPs), underwent an acute Na(+) loading, and the slope of the pressure-natriuresis relationship between blood pressure and Na(+) excretion was calculated. The underlying molecular mechanism was investigated by immunoblotting protein quantifications in human kidneys. The results demonstrate that the PRKG1 risk haplotype GAT (rs1904694, rs7897633, rs7905063, respectively) associates with a rightward shift of the pressure-natriuresis curve (0.017 ± 0.004 μEq/mm Hg per minute) compared with the ACC (0.0013 ± 0.003 μEq/mm Hg per minute; P = 0.001). In human kidneys, a positive correlation of protein expression levels between PRKG1 and Src (r = 0.83; P<0.001) or α1 Na-K ATPase (r = 0.557; P<0.01) and between α1 Na-K ATPase and Na-H exchanger type 3 (r = 0.584; P<0.01) or Src (r = 0.691; P<0.001) was observed in patients carrying PRKG1 risk GAT (n = 23) but not ACC (n = 14) variants. A functional signaling complex among PRKG1, α1 Na-K ATPase, and Src was shown by immunoprecipitation from human renal caveolae. These findings indicate that PRKG1 risk alleles associate with salt-sensitivity related to a loss of the inhibitory control of renal Na(+) reabsorption, suggestive of a blunt pressure-natriuresis response.
Collapse
Affiliation(s)
- Lorena Citterio
- San Raffaele Scientific Institute, Nephrology and Dialysis, Università Vita Salute San Raffaele, Via Olgettina 60, 20132 Milan, Italy.
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
18
|
Zhang C, Wang L, Liao Q, Zhang L, Xu L, Chen C, Ye H, Xu X, Ye M, Duan S. Genetic associations with hypertension: meta-analyses of six candidate genetic variants. Genet Test Mol Biomarkers 2013; 17:736-42. [PMID: 23859711 DOI: 10.1089/gtmb.2013.0080] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
AIMS The aim of this study was to perform combined analyses of six genetic variants for the risk of hypertension. METHODS After a comprehensive literature search for genetic variants involved with the association study of hypertension, we harvested a total of five genes (six variants) for the current meta-analyses. These genes consisted of CYP4A11 (T8590C), RGS2 (1891-1892del TC and G638A), HTR2A (T102C), GNAS (T393C), and HSD3B1 (T→C Leu338). RESULTS A total of 20 studies among 13,816 cases and 19,248 controls were retrieved for the meta-analyses of six genetic variants. It was shown that the RGS2 1891-1892del TC (OR=1.10, 95% CI=1.02-1.19, p=0.02) polymorphism and the CYP4A11 T8590C (OR=1.19, 95% CI=1.00-1.41, p=0.05) polymorphism were significantly associated with increased risk of hypertension. No association was found between the other four variants and the risk of hypertension. CONCLUSION This meta-analysis revealed that the RGS2 1891-1892del TC polymorphism and CYP4A11 T8590C polymorphism were associated with hypertension risk. However, HSD3B1 T→C Leu338, HTR2A T102C, GNAS T393C, and RGS2 G638A polymorphisms were not associated with hypertension risk.
Collapse
Affiliation(s)
- Cheng Zhang
- 1 Zhejiang Provincial Key Laboratory of Pathophysiology, School of Medicine, Ningbo University , Ningbo, Zhejiang, China
| | | | | | | | | | | | | | | | | | | |
Collapse
|
19
|
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.
Collapse
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
| |
Collapse
|
20
|
Liu L, Cao Y, Cui G, Li Z, Sun J, Zhang L, Chen C, Wang Y, Wang P, Ding H, Wang DW. Association analysis of polymorphisms in ROCK2 with cardiovascular disease in a Chinese population. PLoS One 2013; 8:e53905. [PMID: 23326532 PMCID: PMC3543257 DOI: 10.1371/journal.pone.0053905] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2012] [Accepted: 12/04/2012] [Indexed: 12/03/2022] Open
Abstract
Background Rho-kinase (ROCK) has been shown to play an important role in cardiovascular disease such as coronary artery disease (CAD) and hypertension. Recently, common variants of ROCK2 have been reported to influence blood pressure, but the relationship between common ROCK2 variants and cardiovascular disease has not been extensively studied in the Chinese population. Methods To derive a more precise estimation of their relationship, we screened for the common variants by direct sequencing of all exons of ROCK2, and then we performed genetic association analyses in a CAD case–control study, including a total of 1344 cases and 1267 ethnically and geographically matched controls. Results Unconditional logistic regression showed that no significant association between common variants in the coding region of ROCK2 and CAD was observed in our study (for rs978906, OR = 0.92, 95% CI 0.72–1.20 and P = 0.63; for rs2230774, OR = 0.90, 95% CI 0.70–1.16 and P = 0.47; for rs56304104, OR = 0.97, 95% CI 0.70–1.31 and P = 0.83; respectively). Conclusions The relationship between the ROCK2 polymorphisms and cardiovascular disease risk cannot be entirely discounted and warrants further evaluation in a large population.
Collapse
Affiliation(s)
- Lei Liu
- Departments of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Yanyan Cao
- Departments of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Guanglin Cui
- Departments of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Zongzhe Li
- Departments of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Jing Sun
- Departments of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Lina Zhang
- Departments of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Chen Chen
- Departments of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Yan Wang
- Departments of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Peihua Wang
- Departments of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Hu Ding
- Departments of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
- * E-mail: (DWW); (HD)
| | - Dao Wen Wang
- Departments of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
- * E-mail: (DWW); (HD)
| |
Collapse
|
21
|
Yang Y, Li PY, Cheng J, Mao L, Wen J, Tan XQ, Liu ZF, Zeng XR. Function of BKCa channels is reduced in human vascular smooth muscle cells from Han Chinese patients with hypertension. Hypertension 2012; 61:519-25. [PMID: 23232643 DOI: 10.1161/hypertensionaha.111.00211] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Chronic hypertension is associated with an impaired vascular relaxation caused by an increased vascular tone; however, the underlying mechanisms are not fully understood in human patients. The present study was to investigate whether large-conductance Ca(2+)- and voltage-activated K(+) (BK(Ca)) channels are involved in dysfunctional relaxation of artery in Han Chinese patients with hypertension using the perforated patch clamp, inside-out single-channel, and macromembrane patch recording techniques to determine whole-cell current, spontaneous transient outward current, open probability, and Ca(2+) sensitivity and the reverse transcription polymerase chain reaction and Western blot analysis to examine the gene and protein expression of α-subunit (KCa1.1) and β1-subunit (KCNMB1) of BK(Ca) channels in isolated human vascular smooth muscle cells and mesenteric arteries from normotensive and hypertensive patients. It was found that whole-cell current density, spontaneous transient outward current, and Ca(2+) sensitivity, but not single-channel open probability and slope conductance, were significantly decreased in vascular smooth muscle cells from patients with hypertension. Interestingly, mRNA and protein levels of KCNMB1, but not KCa1.1, were reduced in the arterial tissue from patients with hypertension. These results demonstrate for the first time that whole-cell current, spontaneous transient outward current, and Ca(2+) sensitivity of BK(Ca) channels are reduced in human vascular smooth muscle cells, which resulted from downregulation of β1-subunit of the channel. This may account, at least in part, for the dysfunction of artery relaxation in Han Chinese patients with primary hypertension.
Collapse
Affiliation(s)
- Yan Yang
- Key Laboratory of Medical Electrophysiology, Ministry of Education of China, and the Institute of Cardiovascular Research, Luzhou Medical College, Luzhou, Sichuan, China
| | | | | | | | | | | | | | | |
Collapse
|
22
|
The dietary phase 2 protein inducer sulforaphane can normalize the kidney epigenome and improve blood pressure in hypertensive rats. Am J Hypertens 2012; 25:229-35. [PMID: 22052072 DOI: 10.1038/ajh.2011.200] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Our previous studies have shown that broccoli sprouts high in the glucosinolate glucoraphanin decreases renal and vascular oxidative stress and inflammation as well as blood pressure in spontaneously hypertensive stroke-prone (SHRSP) rats. The objective of this study was to determine whether the metabolite of glucoraphanin, sulforaphane, was responsible for this improved blood pressure and whether this is associated with normalization of renal methylated DNA. METHODS Sulforaphane was given by gavage to SHRSP and Sprague Dawley (SD) rats over 4 months and blood pressure measured under anesthesia just before euthanasia. Renovascular morphology was determined by histology and methylated deoxycytosine levels analyzed using high-performance liquid chromatography. RESULTS Mean arterial pressure was 20% higher in vehicle-treated SHRSP when compared to SD. Sulforaphane administration to SHRSP improved blood pressure and lowered this difference to 11%. Vehicle-treated SHRSP had significantly increased wall:lumen ratios in renal arteries, increased numbers of vascular smooth muscle cells (VSMCs), increased renal protein nitration, and decreased (11%) renal DNA methylation compared to SD. Sulforaphane administration to SHRSP significantly lowered arterial wall:lumen ratio by 35%, reduced the number of VSMCs, reduced the level of protein nitration, and increased methylated deoxycytosine levels by 14%. CONCLUSIONS Sulforaphane administration rectified pathological abnormalities in SHRSP kidneys and significantly improved blood pressure. This was associated with normalization of global kidney DNA methylation suggesting that DNA methylation could be associated with hypertension.
Collapse
|
23
|
Xie Z, Liu D, Liu S, Calderon L, Zhao G, Turk J, Guo Z. Identification of a cAMP-response element in the regulator of G-protein signaling-2 (RGS2) promoter as a key cis-regulatory element for RGS2 transcriptional regulation by angiotensin II in cultured vascular smooth muscles. J Biol Chem 2011; 286:44646-58. [PMID: 22057271 DOI: 10.1074/jbc.m111.265462] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Mice deficient in regulator of G-protein signaling-2 (RGS2) have severe hypertension, and RGS2 genetic variations occur in hypertensive humans. A potentially important negative feedback loop in blood pressure homeostasis is that angiotensin II (Ang II) increases vascular smooth muscle cell (VSMC) RGS2 expression. We reported that Group VIA phospholipase A(2) (iPLA(2)β) is required for this response (Xie, Z., Gong, M. C., Su, W., Turk, J., and Guo, Z. (2007) J. Biol. Chem. 282, 25278-25289), but the specific molecular causes and consequences of iPLA(2)β activation are not known. Here we demonstrate that both protein kinases C (PKC) and A (PKA) participate in Ang II-induced VSMC RGS2 mRNA up-regulation, and that actions of PKC and PKA precede and follow iPLA(2)β activation, respectively. Moreover, we identified a conserved cAMP-response element (CRE) in the murine RGS2 promoter that is critical for cAMP-response element-binding protein (CREB) binding and RGS2 promoter activation. Forskolin-stimulated RGS2 mRNA up-regulation is inhibited by CREB sequestration or specific disruption of the CREB-RGS2 promoter interaction, and Ang II-induced CREB phosphorylation and nuclear localization are blocked by iPLA(2)β pharmacologic inhibition or genetic ablation. Ang II-induced intracellular cyclic AMP accumulation precedes CREB phosphorylation and is diminished by inhibiting iPLA(2), cyclooxygenase, or lipoxygenase. Moreover, three single nucleotide polymorphisms identified in hypertensive patients are located in the human RGS2 promoter CREB binding site. Point mutations corresponding to these single nucleotide polymorphisms interfere with stimulation of human RGS2 promoter activity by forskolin. Our studies thus delineate a negative feedback loop to attenuate Ang II signaling in VSMC with potential importance in blood pressure homeostasis and the pathogenesis of human essential hypertension.
Collapse
Affiliation(s)
- Zhongwen Xie
- Department of Physiology, University of Kentucky School of Medicine, Lexington, Kentucky 40536, USA
| | | | | | | | | | | | | |
Collapse
|
24
|
Kumar R, Nejatizadeh A, Gupta M, Markan A, Tyagi S, Jain SK, Pasha MAQ. The epistasis between vascular homeostasis genes is apparent in essential hypertension. Atherosclerosis 2011; 220:418-24. [PMID: 22134143 DOI: 10.1016/j.atherosclerosis.2011.10.036] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2011] [Revised: 10/07/2011] [Accepted: 10/23/2011] [Indexed: 10/15/2022]
Abstract
OBJECTIVE The epistasis influence of vascular homeostasis genes is vital to multigenetic diseases. This study was designed to perceive the possible role of epistasis in the etiology of essential hypertension. METHODS We investigated seven polymorphisms of ACE, CYP11B2 and NOS3 epistatically, and SBP, DBP, MAP, ACE activity, plasma aldosterone concentration (PAC) and NOx level in 860 age- and ethnicity-matched unrelated north-Indian subjects. RESULTS The hypertension risk in individuals with interacted-genotypes (IwIw+IwIc)+(4aa), (IcIc)+(4bb+4ba) and IcIc+4aa of the CYP11B2 and NOS3 was significantly higher with odds ratio 5.5 (95% CI=2.9-10.6, P<0.0001), 2.4 (95% CI=1.4-4.1, P<0.0008) and 7.5 (95% CI=1.6-34.8, P=0.010), respectively. The odds ratio for hypertension with interacted-haplotypes (-344T/Ic)+(-922A/-786T/4a/894G) and (-344T/Ic)+(-922G/-786C/4a/894G) of CYP11B2 and NOS3 was 5.3 (95% CI=2.0-14.2, P=0.005) and 3.9 (95% CI=1.4-10.4, P=0.04), respectively; whereas for the protective interacted-haplotypes (-344T/Iw)+(-922A/-786T/4b/894G), the odds ratio was 0.7 (95% CI=0.5-0.9, P=0.03). While the interacted-genotypes, IcIc+4aa correlated with higher SBP and MAP (P=0.006; P=0.04), the interacted-haplotypes, (-344T/Ic)+(-922A/-786T/4a/894G) and (-344T/Ic)+(-922G/-786C/4a/894G) correlated with higher MAP and lower NOx level (P=0.02 and P=0.03, respectively), and the protective interacted-haplotypes (-344T/Iw)+(-922A/-786T/4b/894G) correlated with lower PAC and MAP (P=0.024 and P=0.018, respectively). CONCLUSIONS The epistasis between CYP11B2 and NOS3 and its correlation with varied clinical and biochemical parameters signify its possible contribution in the complex etiology of hypertension.
Collapse
Affiliation(s)
- Rahul Kumar
- Functional Genomics Unit, Institute of Genomics and Integrative Biology, Mall Road, Delhi 110 007, India
| | | | | | | | | | | | | |
Collapse
|
25
|
Genes involved in vasoconstriction and vasodilation system affect salt-sensitive hypertension. PLoS One 2011; 6:e19620. [PMID: 21573014 PMCID: PMC3090407 DOI: 10.1371/journal.pone.0019620] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2010] [Accepted: 04/12/2011] [Indexed: 01/11/2023] Open
Abstract
The importance of excess salt intake in the pathogenesis of hypertension is widely recognized. Blood pressure is controlled primarily by salt and water balance because of the infinite gain property of the kidney to rapidly eliminate excess fluid and salt. Up to fifty percent of patients with essential hypertension are salt-sensitive, as manifested by a rise in blood pressure with salt loading. We conducted a two-stage genetic analysis in hypertensive patients very accurately phenotyped for their salt-sensitivity. All newly discovered never treated before, essential hypertensives underwent an acute salt load to monitor the simultaneous changes in blood pressure and renal sodium excretion. The first stage consisted in an association analysis of genotyping data derived from genome-wide array on 329 subjects. Principal Component Analysis demonstrated that this population was homogenous. Among the strongest results, we detected a cluster of SNPs located in the first introns of PRKG1 gene (rs7897633, p = 2.34E-05) associated with variation in diastolic blood pressure after acute salt load. We further focused on two genetic loci, SLC24A3 and SLC8A1 (plasma membrane sodium/calcium exchange proteins, NCKX3 and NCX1, respectively) with a functional relationship with the previous gene and associated to variations in systolic blood pressure (the imputed rs3790261, p = 4.55E-06; and rs434082, p = 4.7E-03). In stage 2, we characterized 159 more patients for the SNPs in PRKG1, SLC24A3 and SLC8A1. Combined analysis showed an epistatic interaction of SNPs in SLC24A3 and SLC8A1 on the pressure-natriuresis (p interaction = 1.55E-04, p model = 3.35E-05), supporting their pathophysiological link in cellular calcium homeostasis. In conclusions, these findings point to a clear association between body sodium-blood pressure relations and molecules modulating the contractile state of vascular cells through an increase in cytoplasmic calcium concentration.
Collapse
|
26
|
Demiryurek AT, Erbagci I, Oztuzcu S, Alasehirli B, Ozkara E, Seker M, Sönmez A, Ozsan M, Camci C. Lack of association between the Thr431Asn and Arg83Lys polymorphisms of the ROCK2 gene and diabetic retinopathy. Curr Eye Res 2010; 35:1128-34. [PMID: 20961215 DOI: 10.3109/02713683.2010.507903] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
PURPOSE To analyze the genotype distributions and allele frequencies for ROCK2 Thr431Asn and Arg83Lys polymorphisms among the diabetic retinopathy patients in a Turkish population. METHODS In this case-control study, 335 patients with diabetes mellitus were recruited and divided into three groups according to non-proliferative (n = 127), proliferative (n = 85) diabetic retinopathy, and no retinopathy (n = 123, served as a diabetic control group). Genomic DNA from the patients, and the nondiabetic healthy control cases (n = 132) was analyzed by real-time PCR using a Light-Cycler. RESULTS Neither genotype distributions nor the allele frequencies for the Thr431Asn or Arg83Lys polymorphisms showed a significant difference between the groups. The haplotypes were also not significantly associated with diabetic retinopathy. CONCLUSION These results suggest that there were no evidence for an association of ROCK2 gene Thr431Asn and Arg83Lys polymorphisms with diabetes or diabetic retinopathy in the Turkish population.
Collapse
Affiliation(s)
- Abdullah T Demiryurek
- Department of Pharmacology, Faculty of Medicine, University of Gaziantep, Gaziantep, Turkey.
| | | | | | | | | | | | | | | | | |
Collapse
|
27
|
Estudio del componente genético de la cardiopatía isquémica: de los estudios de ligamiento al genotipado integral del genoma. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/s1131-3587(09)71502-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
28
|
|