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Eldeeb HM, Elgharabawy RM, Abd Elmoniem AE, Ahmed AA. Alpha-2 beta-adrenergic receptor (301-303 I/D) gene polymorphism in hypertension and type 2 diabetes mellitus diseases among Saudi cases in the Qassim region. Sci Prog 2021; 104:368504211012162. [PMID: 33900865 PMCID: PMC10454788 DOI: 10.1177/00368504211012162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The hypertension (HTN) and type 2 diabetes mellitus (T2DM) are a common multifactorial disease due to genetics and environmental factors. The alpha 2B adrenergic receptor (α2B-AR) has relationship with secretion of insulin and mediates the vasoconstriction that elevate blood pressure. This study aimed to determine the association between α2B-AR gene polymorphism with HTN and T2DM in Saudi cases. 200 cases and 100 healthy controls from Saudi population were recruited from the Internal Medicine clinic, Qassim University. The patients were grouped into: 72 HTN without T2DM; 62 HTN with T2DM and 66 T2DM only. Full medical history, examination and biochemical assays were performed for all participants. Genomic DNA was isolated from blood lymphocytes of all subjects for detection of α2B-AR gene polymorphism by using polymerase chain reaction (PCR). The results found a significant association between D carriers genotype and HTN with T2DM cases (p < 0.05) as well as with T2DM-only cases, (p < 0.05) compared to control. Regardless of HTN status, only cases with HTN and T2DM as well as those with T2DM were significantly associated with the recessive model DD versus II+ID (p < 0.05). So, D carriers genotype was significantly associated with total cases of HTN and T2DM (p < 0.05) compared to controls. Our results suggested that there is a relationship between the α2B-AR I/D gene polymorphism and the risk for T2DM with or without HTN, but no such comparable relationship is evident with HTN-only cases among Saudi population in Qassim region.
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Affiliation(s)
- Hussein Mohammad Eldeeb
- Department of Pharmacology and Toxicology, College of Pharmacy, Qassim University, Buraydah, Kingdom of Saudi Arabia
- Department of Biochemistry, Faculty of Medicine, Al-Azhar University, Assiut, Egypt
| | - Rehab M. Elgharabawy
- Department of Pharmacology and Toxicology, College of Pharmacy, Qassim University, Buraydah, Kingdom of Saudi Arabia
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Tanta University, Tanta, Egypt
| | - Alaa E Abd Elmoniem
- Internal Medicine and Cardiology, College of Medicine, Qassim University, Kingdom of Saudi Arabia
- Internal Medicine and Cardiology, College of Medicine, Assiut University, Egypt
| | - Ahmed Ali Ahmed
- Research Center of Biotechnology, College of Medicine, Qassim University, Kingdom of Saudi Arabia
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Kokoz YM, Evdokimovskii EV, Maltsev AV. Upregulation of α2-adrenoceptor synthesis in SHR cardiomyocytes: Recompense without sense – Increased amounts, impaired commands. Arch Biochem Biophys 2019; 674:108109. [DOI: 10.1016/j.abb.2019.108109] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 09/06/2019] [Accepted: 09/17/2019] [Indexed: 10/26/2022]
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Han J, Zuo J, Zhu D, Gao C. The correlation between SNPs within the gene of adrenergic receptor and neuropeptide Y and risk of cervical vertigo. J Clin Lab Anal 2017; 32:e22366. [PMID: 29197114 DOI: 10.1002/jcla.22366] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 11/06/2017] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND The current investigation was aimed to explore the potential associations of SNPs within ADRB2, ADRB1, NPY, and ADRA1A with risk and prognosis of cervical vertigo. METHODS Altogether 216 patients with cervical vertigo and 204 healthy controls were gathered, and their DNAs were extracted utilizing the whole-blood DNA extraction kit. Besides, the PCR reactions were conducted using the TaqManR single nucleotide polymorphism (SNP) genotyping assays, and the SNPs were detected on the 7900HT real-time fluorogenic quantitative polymerase chain reaction (PCR) instrument. Finally, the severity of cervical vertigo was classified according to the JOA scoring, and the recovery rate (RR) of cervical vertigo was calculated in light of the formula as: [Formula: see text] RESULTS: The SNPs within ADRA1A [rs1048101 (T>C) and rs3802241 (C>T)], NPY [rs16476 (A>C), rs16148 (T>C), and rs5574 (C>T)], ADRB1 [rs28365031 (A>G)] and ADRB2 [rs2053044 (A>G)] were all significantly associated with regulated risk of cervical vertigo (all P < .05). Haplotypes of ADRA1A [CT and TC] and NPY [CCT and ATT] were also suggested as the susceptible factors of cervical vertigo in comparison with other haplotypes. Furthermore, the SNPs within ADRA1A [rs1048101 (T>C)], NPY [rs16476 (A>C), rs16148 (T>C)], as well as ADRB1 [rs28365031 (A>G)] all appeared to predict the prognosis of cervical vertigo in a relatively accurate way (all P < .05). Ultimately, the haplotypes of ADRA1A (CC) and NPY (CCT) tended to decrease the RR. CONCLUSIONS The SNPs within ADRB2, ADRB1, NPY, and ADRA1A might act as the diagnostic biomarkers and treatment targets for cervical vertigo.
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Affiliation(s)
- Jianlong Han
- Department of Orthopedics, the Second Hospital of Shandong University, Jinan City, Shandong Province, China.,Department of Orthopedics, the Fourth Hospital of Jinan, Jinan City, Shandong Province, China
| | - Jinliang Zuo
- Department of Orthopedics, the Fourth Hospital of Jinan, Jinan City, Shandong Province, China
| | - Dengsong Zhu
- Department of Orthopedics, the Fourth Hospital of Jinan, Jinan City, Shandong Province, China
| | - Chunzheng Gao
- Department of Orthopedics, the Second Hospital of Shandong University, Jinan City, Shandong Province, China
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Mulerova T, Ogarkov M, Uchasova E, Voevoda M, Barbarash O. A comparison of the genetic and clinical risk factors for arterial hypertension between indigenous and non-indigenous people of the Shoria Mountain Region. Clin Exp Hypertens 2017; 40:324-331. [PMID: 29027816 DOI: 10.1080/10641963.2017.1377215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
BACKGROUND This study investigated the non-genetic and genetic risk factors for arterial hypertension (AH) in two ethnic groups living in the Mountain Shoria region: Shors and non-indigenous people. METHODS Clinical and epidemiological study of compactly living population in the remote areas of the Mountain Shoria (Orton, Ust-Kabyrza, Sheregesh settlements, Kemerovo region). 1178 residents of these settlements were surveyed with the help of continuous sampling method; the sample consisted of adults (18 years and older). RESULTS The prevalence of AH was lower in Shors (39.9% vs. 46.1%), mainly due to differences between men from the different groups: 33.2% vs. 45.8%. The percentage of people with AH, overweight, and obesity (including transabdominal obesity) in the different age groups did not differ between ethnicities. We identified statistically significant differences in the prevalence of hypertension according the two ethic groups according to age, body weight, and abdominal obesity. I/D ACE and ADRA2B polymorphisms were associated with AH. In DD ACE and DD ADRA2B carriers, there were fewer hypertensive patients in Shors than in non-indigenous people: 40.6% vs. 58.6% and 38.3% vs. 64.0%, respectively. In DD ACE carriers, more Shors had AH (60.0% vs. 37.1%). CONCLUSION Among Shors, the following factors increased AH risk: female sex, age, hypercholesterolemia, hyperbetacholesterinemia, hypertriglyceridemia, obesity (including transabdominal obesity), glucose intolerance, and the DD ACE, CT MTHFR, and AA ADRB1 genotypes; among the non-indigenous population, the main factors were age, hypercholesterolemia, hyperbetacholesterinemia, hypoalfacholesterinemia, hypertriglyceridemia, obesity (including transabdominal obesity), and ID ACE genotype.
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Affiliation(s)
- Tatyana Mulerova
- a Federal State Budgetary of Scientific Institution , Research Institute for Complex Issues of Cardiovascular Diseases , Kemerovo , Russia
| | - Michael Ogarkov
- a Federal State Budgetary of Scientific Institution , Research Institute for Complex Issues of Cardiovascular Diseases , Kemerovo , Russia
| | - Evgenya Uchasova
- a Federal State Budgetary of Scientific Institution , Research Institute for Complex Issues of Cardiovascular Diseases , Kemerovo , Russia
| | - Michael Voevoda
- a Federal State Budgetary of Scientific Institution , Research Institute for Complex Issues of Cardiovascular Diseases , Kemerovo , Russia
| | - Olga Barbarash
- a Federal State Budgetary of Scientific Institution , Research Institute for Complex Issues of Cardiovascular Diseases , Kemerovo , Russia
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Al-Hakeem MM, Abotalib Z, Alharbi KK, Khan IA, Mohammed AA. Insertion and deletion polymorphism in the alpha-2B adrenoceptor gene in pregnant women ripens gestational diabetes mellitus. Saudi J Biol Sci 2016; 23:128-34. [PMID: 26858549 PMCID: PMC4705291 DOI: 10.1016/j.sjbs.2014.11.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Revised: 10/29/2014] [Accepted: 11/09/2014] [Indexed: 11/24/2022] Open
Abstract
There are no earlier studies that reported the association of the 12Glu9 polymorphism in the alpha-2B adrenoceptor (ADRA2B) gene with gestational diabetes mellitus (GDM). We examined the potential association between the ADRA2B gene insertion/deletion (I/D) polymorphism in the Saudi population with GDM. Pregnant women with GDM have been reported to exhibit the same susceptibility as that observed in type 2 diabetes mellitus (T2DM). We have selected I/D polymorphism of the ADRA2B gene located in chromosome 2q11.1 that has been extensively related to T2DM and cardiovascular diseases. This case–control study was conducted with 200 GDM and 300 non-GDM pregnant women. Genotyping of I/D polymorphism was performed by conventional PCR method. Biochemical analyses were found to be significantly different between GDM and non-GDM subjects (p < 0.05). Genotype (ID + DD vs II, p = 0.0002) and allele (D vs I, p = 0.0002) frequencies of the 12Glu9 polymorphism were found to be statistically significant. However, a significant difference was found between allele and genotypes of I/D polymorphism of the ADRA2B gene or the clinical characteristics of the subjects. Our results obtained in this study indicate the ADRA2B gene in the Saudi women was associated with the development of GDM.
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Affiliation(s)
- Malak Mohammed Al-Hakeem
- Department of Obstetrics and Gynecology, King Khalid University Hospital, College of Medicine, King Saud University, P.O. Box 60826, Riyadh 11555, Saudi Arabia
| | - Zeinab Abotalib
- Department of Obstetrics and Gynecology, King Khalid University Hospital, College of Medicine, King Saud University, P.O. Box 60826, Riyadh 11555, Saudi Arabia
| | - Khalid K. Alharbi
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Saud University, P.O. Box 10219, Riyadh 11433, Saudi Arabia
| | - Imran Ali Khan
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Saud University, P.O. Box 10219, Riyadh 11433, Saudi Arabia
- Corresponding author. Tel.: +966 567288142; fax: +966 114693851.
| | - Arif A. Mohammed
- Centre of excellence in Biotechnology Research, College of Science, King Saud University, Riyadh, Saudi Arabia
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Tayel SI, Khader HF, El-Helbawy NG, Ibrahim WA. Association of deletion allele of insertion/deletion polymorphism in α2B adrenoceptor gene and hypertension with or without type 2 diabetes mellitus. Appl Clin Genet 2012; 5:111-8. [PMID: 23776387 PMCID: PMC3681199 DOI: 10.2147/tacg.s33814] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Vascular α2B-adrenoreceptors have the potential to increase blood pressure by mediating vasoconstriction. A nine-nucleotide deletion in the receptor enhances vasoconstriction and exacerbates hypertension. The aim of this study was to determine the association between insertion/deletion (I/D) polymorphism of the α2B-adrenoceptor and hypertension with and without diabetes. METHODS The study was carried out in 35 hypertensive patients with diabetes, 35 hypertensive patients without diabetes, and 30 healthy controls. Clinical data, blood lipid profiles, and I/D polymorphism were assessed. RESULTS Hypertensive patients were significantly older, with significantly higher systolic/diastolic blood pressures and worse plasma lipid profiles than controls. The frequency of the DD genotype was significantly higher in both hypertensive patients with (77.14%, P < 0.01) and without (71.43%, P < 0.05) diabetes versus controls (40%). Also, the D allele was significantly more common in both hypertensive patients with (84.29%, P < 0.01) and without (80%, P < 0.05) diabetes versus controls (58.33%). Hypertensive patients were more likely to have the D allele with (3.83-fold) and without (2.85-fold) diabetes. The frequencies of the DD genotype and the D allele were not significantly (P > 0.05) different between the patient groups. The DD genotype was associated with significantly lower high-density lipoprotein (P = 0.001) and significantly higher low-density lipoprotein (P = 0.017) levels versus the II and ID genotypes in the hypertensive group without diabetes. CONCLUSION A marked and statistically significant association between DD genotype and D allele of I/D polymorphism in the α2B-adrenoceptor gene may be a risk factor for hypertension ± diabetes. The association between the DD genotype and dyslipidemia may partially explain its role in precipitating hypertension.
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Affiliation(s)
- Safaa I Tayel
- Department of Medical Biochemistry, Faculty of Medicine, Menoufiya University, Shebin Elkom, Egypt,Correspondence: Dr Safaa Tayel, Menoufiya University Shebin Elkom, Menoufiya, Egypt, Tel +204 8379 6075, Mobile +201 003 383 097, Email
| | - Heba F Khader
- Department of Medical Biochemistry, Faculty of Medicine, Menoufiya University, Shebin Elkom, Egypt
| | - Nesreen G El-Helbawy
- Department of Medical Biochemistry, Faculty of Medicine, Menoufiya University, Shebin Elkom, Egypt
| | - Waleed A Ibrahim
- Department of Cardiology, Faculty of Medicine, Menoufiya University, Shebin Elkom, Egypt
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Kelsey RM, Alpert BS, Dahmer MK, Krushkal J, Quasney MW. Alpha-adrenergic receptor gene polymorphisms and cardiovascular reactivity to stress in Black adolescents and young adults. Psychophysiology 2011; 49:401-12. [PMID: 22091949 DOI: 10.1111/j.1469-8986.2011.01319.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2010] [Accepted: 09/26/2011] [Indexed: 01/11/2023]
Abstract
Cardiovascular reactivity to stress and α-adrenergic receptor (α-AR) function may contribute to the development of hypertension. As Black Americans have an increased risk of hypertension, we evaluated associations between α(1A) -AR (Arg492Cys), α(2A) -AR (-1291C/G), and α(2B) -AR (Ins/Del301-303) gene variants and cardiovascular reactivity in 500 normotensive Black youth. Heart rate, preejection period, total peripheral resistance, and blood pressure were measured during cold and psychological stress. The Arg492Cys polymorphism in the α(1A) -AR gene was associated with heart rate reactivity to stress, but the association depended on sex. The -1291C/G promoter polymorphism in the α(2A) -AR gene was associated with vascular reactivity to stress; vasoconstriction increased as a linear function of the number of copies of the variant G allele. Thus, specific associations emerged between genetic variations in α-Ars and cardiovascular reactivity in young Blacks.
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Affiliation(s)
- Robert M Kelsey
- Department of Pediatrics, University of Tennessee Health Science Center, Memphis, TN 38104, USA.
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Cottingham C, Chen H, Chen Y, Peng Y, Wang Q. Genetic variations of α(2)-adrenergic receptors illuminate the diversity of receptor functions. Curr Top Membr 2011; 67:161-90. [PMID: 21771490 DOI: 10.1016/b978-0-12-384921-2.00008-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Gao Y, Sakurai M, Takeda H, Higashide T, Kawase K, Sugiyama K. Association between genetic polymorphisms of adrenergic receptor and diurnal intraocular pressure in Japanese normal-tension glaucoma. Ophthalmology 2010; 117:2359-2364.e1-2. [PMID: 20705341 DOI: 10.1016/j.ophtha.2010.04.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2009] [Revised: 03/03/2010] [Accepted: 04/05/2010] [Indexed: 10/19/2022] Open
Abstract
PURPOSE To evaluate the relationship between genetic polymorphisms of the adrenergic receptor (ADR) and diurnal intraocular pressure (IOP) in Japanese normal-tension glaucoma (NTG) patients. DESIGN Prospective, comparative case series. PARTICIPANTS Ninety-two untreated NTG patients. METHODS The IOP of both eyes was measured at 3-hour intervals from 0600 to 2400 hours over 2 consecutive days. We used IOP data from the eye with the greater visual field defect for statistical analysis. The mean IOP over 2 days was used for each time point. Genetic polymorphisms in α1A-, α2A-, α2B-, α2C-, β1-, β2-, and β3-ADR were determined mainly by direct DNA sequencing. The relationship between IOP and genetic polymorphisms was analyzed. MAIN OUTCOME MEASURES The IOP and genotypes of genetic polymorphisms. RESULTS Diurnal mean IOP of the subjects was 14.8 ± 2.1 mmHg (mean value ± standard deviation). For Del 301-303 in α2B-ADR, insertion/insertion (I/I) had a significantly higher diurnal mean IOP (P = 0.017), peak IOP (P = 0.038), and trough IOP (P = 0.046) than deletion (D) carriers. For Del 322-325 in α2C-ADR, I/I had a significantly lower diurnal mean IOP (P = 0.037) and peak IOP (P = 0.029) than D carriers. For S49G (A/G) in β1-ADR, A/A had a significantly higher diurnal mean IOP (P = 0.023), peak IOP (P = 0.019), and trough IOP (P = 0.014) than G carriers. For these 3 polymorphisms, repeated measures analysis of variance showed that the major homozygotes and minor carriers had parallel diurnal IOP curves, but significantly different diurnal IOP levels. CONCLUSIONS Polymorphisms of the ADR gene may alter the untreated IOP level of patients with NTG.
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Affiliation(s)
- Yanlin Gao
- Department of Ophthalmology and Visual Science, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
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Bengtsson Boström K, Hedner J, Grote L, Melander O, von Wowern F, Råstam L, Groop L, Lindblad U. Polymorphisms in α- and β-Adrenergic Receptor Genes, Hypertension, and Obstructive Sleep Apnea: The Skaraborg Sleep Study. Int J Hypertens 2010; 2010:458410. [PMID: 20948559 PMCID: PMC2949080 DOI: 10.4061/2010/458410] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2009] [Accepted: 03/05/2010] [Indexed: 11/20/2022] Open
Abstract
The sympathetic nervous system and the adrenergic receptors play an important role in regulation of blood pressure. This study explored the associations between functional polymorphisms of the α(2B)-, β(1)-, and β(2)-adrenergic receptor genes and obstructive sleep apnea (OSA) in hypertensive patients and hypertension in patients with OSA in a populationbased sample of 157 hypertensive patients and 181 healthy control subjects. Only the Arg389Gly polymorphism of the β(1)-adrenergic receptor gene was associated with increased risk for mild OSA in hypertensive patients (Arg/Arg versus Gly/Arg/Gly/Gly, 2.1, 95% CI, 1.02-4.7). Hypertensive men carrying the Arg389Arg genotype had higher crude and age-adjusted AHI than carriers of the Arg389Gly/Gly389Gly genotypes. When adjusted also for BMI this difference became borderline significant. This difference was not observed in women. The risk of hypertension in mild OSA was associated with increasing number of Arg-alleles (Arg/Arg OR 5.4, 95% CI 1.4-21.2).
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Affiliation(s)
- Kristina Bengtsson Boström
- R&D Centre Skaraborg Primary Care, Storgatan 18, 541 30 Skövde, Sweden
- Department of Clinical Sciences, Diabetes and Endocrinology, Malmö University Hospital, Lund University, 20502 Malmö, Sweden
- Department of Clinical Sciences, Community Medicine, Malmö University Hospital, Lund University, 20502 Malmö, Sweden
| | - Jan Hedner
- Sleep Laboratory, The Sahlgrenska Academy, University of Gothenburg, 41345 Gothenburg, Sweden
| | - Ludger Grote
- Sleep Laboratory, The Sahlgrenska Academy, University of Gothenburg, 41345 Gothenburg, Sweden
| | - Olle Melander
- Department of Clinical Sciences, Diabetes and Endocrinology, Malmö University Hospital, Lund University, 20502 Malmö, Sweden
| | - Fredrik von Wowern
- Department of Clinical Sciences, Diabetes and Endocrinology, Malmö University Hospital, Lund University, 20502 Malmö, Sweden
| | - Lennart Råstam
- Department of Clinical Sciences, Community Medicine, Malmö University Hospital, Lund University, 20502 Malmö, Sweden
| | - Leif Groop
- Department of Clinical Sciences, Diabetes and Endocrinology, Malmö University Hospital, Lund University, 20502 Malmö, Sweden
| | - Ulf Lindblad
- Department of Clinical Sciences, Community Medicine, Malmö University Hospital, Lund University, 20502 Malmö, Sweden
- Department of Public Health and Community Medicine/Primary Health Care, The Sahlgrenska Academy, University of Gothenburg, P.O. Box 400, 405 30 Göteborg, Sweden
- Skaraborg Institute, Stationsgatan 12, 54130 Skövde, Sweden
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Kitsios GD, Zintzaras E. Synopsis and data synthesis of genetic association studies in hypertension for the adrenergic receptor family genes: the CUMAGAS-HYPERT database. Am J Hypertens 2010; 23:305-13. [PMID: 20044737 PMCID: PMC2962566 DOI: 10.1038/ajh.2009.251] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND The adrenergic receptor (adrenoceptor) family genes have been extensively studied as candidate genes in hypertension but the results of individual genetic association studies (GAS) are controversial and inconclusive. To clarify these data, a systematic assessment of GAS for adrenoceptor family genes in hypertension was conducted. METHODS Data from 163 GAS involving 7 genes and 37 distinct genetic variants were analyzed and cataloged in CUMAGAS-HYPERT (Cumulative Meta-analysis of Genetic Association Studies-HYPERTension; a web-based information system, which allows the retrieval and synthesis of data from GAS in hypertension, available at http://biomath.med.uth.gr). Data from genome-wide association studies involving the adrenoceptor family genes were also systematically searched. RESULTS Individual GAS reported inconsistent associations and had limited power to detect modest genetic effects, with only 1.2% having power >80%. Thirteen variants were investigated by three or more studies and their results were subject to meta-analysis. In the main meta-analyses, significant results were shown for five variants (ADRB1 p.Arg389Gly, ADRB1 p.Ser49Gly, ADRB2 g.9368308A>G, ADRB3 p.Trp64Arg, and ADRA1A p.Cys347Arg) under the allelic contrast and/or the dominant model. Subgroup analyses by ethnicity and gender detected significant associations for three variants (ADRB1 p.Arg389Gly in east Asians, ADRB2 p.Gln27Glu in whites, and ADRB3 p.Trp64Arg in whites and in males). Heterogeneity ranged from none to high. No significant associations were recorded from genome-wide studies. CONCLUSIONS There is evidence to implicate adrenoceptor genes in hypertension, although future studies designed to investigate epistatic and gene-environment interactions would allow more solid conclusions to be drawn about the role of these genes in hypertension.
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Affiliation(s)
- Georgios D Kitsios
- Department of Biomathematics, University of Thessaly School of Medicine, Larissa, Greece
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