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Vázquez-Moreno M, Locia-Morales D, Peralta-Romero J, Sharma T, Meyre D, Cruz M, Flores-Alfaro E, Valladares-Salgado A. AGT rs4762 is associated with diastolic blood pressure in Mexicans with diabetic nephropathy. J Diabetes Complications 2021; 35:107826. [PMID: 33423909 DOI: 10.1016/j.jdiacomp.2020.107826] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 12/01/2020] [Accepted: 12/08/2020] [Indexed: 01/10/2023]
Abstract
AIMS Since angiotensinogen has a pivotal role in the renin-angiotensin-aldosterone system, the analysis of polymorphisms of the angiotensinogen (AGT) gene could help explain its potential involvement in hypertension and diabetic nephropathy (DN) pathogenesis. For that reason, we investigated 1) the association of AGT rs4762 with blood pressure (BP) and kidney function-related traits and 2) the interaction effect of AGT rs4762 with DN on BP and kidney function-related traits in 546 Mexican adults with type 2 diabetes (T2D). METHODS We enrolled 546 unrelated Mexican patients with T2D (350 cases with DN and 196 controls without DN). AGT rs4762 was genotyped in all participants using TaqMan technology (effect allele: A). BP and kidney function-related traits, including serum urea and creatinine, urinary albumin, urine albumin to urine creatinine ratio (ACR), and glomerular filtration rate, were studied. DN was defined as having a previous diagnosis of T2D and an ACR ≥ 30 mg/g. The association between these parameters was investigated using logistic regression with adjustment for covariates. RESULTS AGT rs4762 A allele was significantly associated with diastolic blood pressure (N = 546, β = 1.243 ± 0.918, p = 0.029). A significant interaction between DN and AGT rs4762 was also observed in relation to diastolic blood pressure (DBP) (N = 546, β = 0.930 ± 0.433, p=0.032). A follow-up analysis of simple effects particularly revealed a positive association between AGT rs4762 A allele and DBP only in patients with diabetic nephropathy (N = 350, β = 2.837 ± 1.267, p = 0.026). CONCLUSION Our results evidence that, although AGT rs4762 is not associated with DN, the AGT rs4762 A allele is positively associated with DBP in the Mexican population with DN.
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Affiliation(s)
- Miguel Vázquez-Moreno
- Unidad de Investigación Médica en Bioquímica, Hospital de Especialidades, Centro Médico Nacional Siglo XXI del Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | - Daniel Locia-Morales
- Unidad de Investigación Médica en Bioquímica, Hospital de Especialidades, Centro Médico Nacional Siglo XXI del Instituto Mexicano del Seguro Social, Mexico City, Mexico; Laboratorio de Investigación en Epidemiología Clínica y Molecular, Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Guerrero, Chilpancingo, Guerrero, Mexico
| | - José Peralta-Romero
- Unidad de Investigación Médica en Bioquímica, Hospital de Especialidades, Centro Médico Nacional Siglo XXI del Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | - Tanmay Sharma
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Canada
| | - David Meyre
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Canada; Inserm UMR_S1256 Nutrition-Genetics-Environmental Risk Exposure, University of Lorraine, Nancy, France; FHU ARRIMAGE, Department of Biochemistry-Molecular Biology-Nutrition, University Hospital Centre of Nancy, Nancy, France
| | - Miguel Cruz
- Unidad de Investigación Médica en Bioquímica, Hospital de Especialidades, Centro Médico Nacional Siglo XXI del Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | - Eugenia Flores-Alfaro
- Laboratorio de Investigación en Epidemiología Clínica y Molecular, Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Guerrero, Chilpancingo, Guerrero, Mexico
| | - Adan Valladares-Salgado
- Unidad de Investigación Médica en Bioquímica, Hospital de Especialidades, Centro Médico Nacional Siglo XXI del Instituto Mexicano del Seguro Social, Mexico City, Mexico.
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Gong HT, Mu LY, Zhang T, Xu XY, Du FH. Association of mononucleotide polymorphisms of angiotensinogen gene at promoter region with antihypertensive response to angiotensin receptor blockers in hypertensive Chinese. J Renin Angiotensin Aldosterone Syst 2019; 20:1470320319827205. [PMID: 30798697 PMCID: PMC6362516 DOI: 10.1177/1470320319827205] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Introduction: This study aimed to investigate whether mononucleotide polymorphisms of the
angiotensinogen gene at promoter were associated with the
blood-pressure-lowering response to telmisartan treatment. Materials and methods: After a two-week single-blind placebo run-in period, 148 patients with
mild-to-moderate primary hypertension received monotherapy with 80 mg/day of
telmisartan and then were followed up for eight weeks. The -6A/G and -20A/C
polymorphisms of the angiotensinogen gene at promoter were determined
through polymerase chain reaction and restriction fragment length
polymorphsim analysis. The relationship between these polymorphisms and
changes in blood pressure was observed and evaluated after eight weeks of
treatment. Results: There were no significant differences between -6A/G, -20A/C polymorphisms of
the angiotensinogen gene and blood pressure reductions after treatment,
p>0.05. Conclusion: It is suggested that angiotensinogen-6 A/G and angiotensinogen-20 A/C
polymorphisms were not associated with the antihypertensive response to
telmisartan treatment in Chinese patients with hypertension.
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Affiliation(s)
- Hong-Tao Gong
- Department of Cardiology, Beijing Tiantan Hospital, Capital University of Medical Science, People's Republic of China
| | - Li-Ying Mu
- Department of Cardiology, Beijing Tiantan Hospital, Capital University of Medical Science, People's Republic of China
| | - Tong Zhang
- Department of Cardiology, Beijing Tiantan Hospital, Capital University of Medical Science, People's Republic of China
| | - Xiu-Ying Xu
- Department of Cardiology, Beijing Tiantan Hospital, Capital University of Medical Science, People's Republic of China
| | - Feng-He Du
- Department of Cardiology, Beijing Tiantan Hospital, Capital University of Medical Science, People's Republic of China
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Wu F, Li L, Wen Q, Yang J, Chen Z, Wu P, He M, Zhang X, Wu T, Cheng L. A functional variant in ST2 gene is associated with risk of hypertension via interfering MiR-202-3p. J Cell Mol Med 2017; 21:1292-1299. [PMID: 28121058 PMCID: PMC5487927 DOI: 10.1111/jcmm.13058] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 11/09/2016] [Indexed: 02/05/2023] Open
Abstract
Recent studies have suggested that interleukin 1 receptor-like 1 (ST2) plays a critical role in pathogenesis of several cardiovascular disease conditions. In this study, we examined association of 13 single nucleotide polymorphisms (SNPs) of ST2 gene with essential hypertension (EH) risk in 1151 patients with EH and 1135 controls. Our study showed that variants rs11685424, rs12999364 and rs3821204 are highly associated with an increase in risk of EH, while rs6543116 is associated with a decrease risk of EH. Notably, in silico analyses suggested the G>C change of rs3821204, which located within the 3'UTR of soluble ST2 mRNA, disrupted a putative binding site for miR202-3p. Functional analyses suggested that miR-202-3p significantly decreased soluble ST2-G mRNA stability and inhibited its endogenous expression. Furthermore, we found increased plasma-soluble ST2 (sST2) level was highly associated with CC genotype of rs3821204 in vivo. Taken together, our findings provide the first evidence that genetic variants in ST2 gene are associated with EH risk and variant rs3821204 may influence the development of EH by controlling sST2 expression.
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Affiliation(s)
- Fangqin Wu
- Department of Cardiovascular MedicineThe Second Affiliated Hospital of Nanchang UniversityNanchangJiangxiChina
- Department of CardiologyUnion HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubeiChina
| | - Lu Li
- Second Affiliated HospitalShantou University Medical CollegeShantouChina
- Institute of Occupational Medicine and the Ministry of Education Key Lab of Environment and HealthSchool of Public HealthTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubeiChina
| | - Qiang Wen
- Department of CardiologyUnion HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubeiChina
| | - Jinhua Yang
- Department of CardiologyUnion HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubeiChina
| | - Zhuyue Chen
- Department of CardiologyUnion HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubeiChina
| | - Peng Wu
- Department of CardiologyUnion HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubeiChina
| | - Meian He
- Institute of Occupational Medicine and the Ministry of Education Key Lab of Environment and HealthSchool of Public HealthTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubeiChina
| | - Xiaomin Zhang
- Institute of Occupational Medicine and the Ministry of Education Key Lab of Environment and HealthSchool of Public HealthTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubeiChina
| | - Tangchun Wu
- Institute of Occupational Medicine and the Ministry of Education Key Lab of Environment and HealthSchool of Public HealthTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubeiChina
| | - Longxian Cheng
- Department of CardiologyUnion HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubeiChina
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Jiao J, Wang M, Wang Y, Sun N, Li C. Lead exposure increases blood pressure by increasing angiotensinogen expression. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2016; 51:434-9. [PMID: 26818744 DOI: 10.1080/10934529.2015.1120537] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Lead exposure can induce increased blood pressure. Several mechanisms have been proposed to explain lead-induced hypertension. Changes in angiotensinogen (AGT) expression levels or gene variants may also influence blood pressure. In this study, we hypothesized that AGT expression levels or gene variants contribute to lead-induced hypertension. A preliminary HEK293 cell model experiment was performed to analyze the association between AGT expression and lead exposure. In a population-based study, serum AGT level was measured in both lead-exposed and control populations. To further detect the influence of AGT gene single nucleotide polymorphisms (SNPs) in lead-induced hypertension, two SNPs (rs699 and rs4762) were genotyped in a case-control study including 219 lead-exposed subjects and 393 controls. Lead exposure caused an increase in AGT expression level in HEK 293 cell models (P < 0.001) compared to lead-free cells, and individuals exposed to lead had higher systolic and diastolic blood pressure (P < 0.001). Lead-exposed individuals had higher serum AGT levels compared to controls (P < 0.001). However, no association was found between AGT gene SNPs (rs699 and rs4762) and lead exposure. Nevertheless, the change in AGT expression level may play an important role in the development of lead-induced hypertension.
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Affiliation(s)
- Jiandong Jiao
- a Department of Occupational Health , Wuxi Center for Disease Control and Prevention , Wuxi , P.R. China
| | - Miaomiao Wang
- a Department of Occupational Health , Wuxi Center for Disease Control and Prevention , Wuxi , P.R. China
| | - Yiqing Wang
- a Department of Occupational Health , Wuxi Center for Disease Control and Prevention , Wuxi , P.R. China
| | - Na Sun
- a Department of Occupational Health , Wuxi Center for Disease Control and Prevention , Wuxi , P.R. China
| | - Chunping Li
- a Department of Occupational Health , Wuxi Center for Disease Control and Prevention , Wuxi , P.R. China
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Li Q, Sun L, Du J, Ran P, Gao T, Yuan Y, Xiao C. Risk given by AGT polymorphisms in inducing susceptibility to essential hypertension among isolated populations from a remote region of China: A case-control study among the isolated populations. J Renin Angiotensin Aldosterone Syst 2015; 16:1202-17. [PMID: 26391364 DOI: 10.1177/1470320315606315] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Accepted: 07/22/2015] [Indexed: 01/09/2023] Open
Abstract
INTRODUCTION Hypertension is a serious risk factor affecting up to 30% of the world's population with a heritability of more than 30-50%. The aim of this study was to investigate the contribution of the polymorphisms localized in the angiotensinogen (AGT) gene, a main component of the renin-angiotensin-aldosterone system, in inducing the susceptibility to essential hypertension (EH) among isolated populations (Yi and Hani minorities) with low prevalence rate from the remote region of Yunnan in China. METHODS A case-control association study was performed, and all subjects were genotyped for the seven single nucleotide polymorphisms localized in the AGT region by polymerase chain reaction-restriction fragment length polymorphism analysis. RESULTS Three polymorphisms, i.e. rs5046, rs5049, and rs2478544, were significantly associated with EH among the Hani minority. The associations, found in the Yi minority, did not reach a conclusive level of statistical significance. The polymorphisms of rs2478544 and rs5046 caused the transformations of exonic splicing enhancer sites and transcription factor binding sites, respectively, in the bioinformatic analyses. The haplotype-rs5046T, rs5049A, rs11568020G, rs3789679C, rs2478544C was susceptible for EH among the Hani minority. CONCLUSION Our findings suggested that the AGT polymorphisms have played a vital role in determining an individual's susceptibility to EH among the isolated population, which would be helpful for EH management in the remote mountainous region of Yunnan in China.
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Affiliation(s)
- Qian Li
- School of Medicine, Yunnan University, Kunming, China
| | - Lijuan Sun
- School of Medicine, Yunnan University, Kunming, China
| | - Jing Du
- School of Medicine, Yunnan University, Kunming, China
| | - Pengzhan Ran
- School of Medicine, Yunnan University, Kunming, China
| | - Tangxin Gao
- School of Medicine, Yunnan University, Kunming, China
| | - Yuncang Yuan
- School of Medicine, Yunnan University, Kunming, China
| | - Chunjie Xiao
- School of Medicine, Yunnan University, Kunming, China
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Wang Q, Hu X, Li S, Wang X, Wang J, Zhang R, Sun J, Zhang P, Feng X, Li YG. Association of the angiotensinogen M235T polymorphism with recurrence after catheter ablation of acquired atrial fibrillation. J Renin Angiotensin Aldosterone Syst 2015; 16:888-97. [PMID: 26240116 DOI: 10.1177/1470320315594315] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Accepted: 05/22/2015] [Indexed: 11/15/2022] Open
Abstract
PURPOSE Previous studies showed that genetic variants of the angiotensinogen (AGT) gene conferred higher risk for acquired atrial fibrillation (AF). The present study investigated whether AGT variants correlate with the clinical outcome in patients with acquired AF after catheter ablation (CA). METHODS A total of 150 acquired symptomatic drug-refractory AF patients (mean age 63.7±11.0 years, 24.6% non-paroxysmal AF) with acquired AF underwent a single CA procedure in our department and were included in this retrospective analysis. Eight tagging single nucleotide polymorphisms (tSNPs) in the AGT gene were genotyped. Standard electrocardiographs (ECGs) and 24-hour Holter recordings were performed during a median follow-up period of 57.5 months to detect AF recurrence. RESULTS Sixty-one patients (40.7%) suffered AF recurrences after a single CA procedure during follow up. Of the eight tSNPs, the frequency of the M allele of M235T was significantly higher in the recurrence group (28%) compared to the non-recurrence group (18%) (p=0.042). The recurrence rates of patients with the TT, MT, and MM genotypes were 34.4%, 50%, and 55.6%, respectively (ptrend=0.049). After adjusting for age, sex, body mass index, hypertension, left atrial volume index (LAVI) and other covariates, M235T increased the risk of AF recurrence in additive and dominant models with odds ratios of 2.023 (95% confidence interval (CI): 1.034-3.926, p=0.033) and 2.601 (95% CI: 1.102-6.056, p=0.025), respectively. However, in multiple correction analyses, the p values of multiple comparisons were not statistically significant (pcorrect>0.05). CONCLUSIONS The M allele of M235T might be associated with an increased risk of AF recurrence after CA. Genotyping may thus be helpful on identifying patients with higher risks of AF recurrence after CA and developing optimal follow-up strategies. These strategies may differ and should be individualized according to patients' genotype. Future studies are warranted to validate the potential effect of AGT M235T on AF recurrence post CA.
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Affiliation(s)
- Qunshan Wang
- Department of Cardiology, Shanghai Jiaotong University School of Medicine, China
| | - Xiaofeng Hu
- Department of Cardiology, Zhejiang Hospital, China
| | - Shuyuan Li
- School of Life Sciences and Institutes of Biomedical Sciences, Fudan University, China
| | - Xiaofeng Wang
- School of Life Sciences and Institutes of Biomedical Sciences, Fudan University, China
| | - Jun Wang
- Department of Cardiology, Shanghai Jiaotong University School of Medicine, China
| | - Rui Zhang
- Department of Cardiology, Shanghai Jiaotong University School of Medicine, China
| | - Jian Sun
- Department of Cardiology, Shanghai Jiaotong University School of Medicine, China
| | - Pengpai Zhang
- Department of Cardiology, Shanghai Jiaotong University School of Medicine, China
| | - Xiangfei Feng
- Department of Cardiology, Shanghai Jiaotong University School of Medicine, China
| | - Yi-Gang Li
- Department of Cardiology, Shanghai Jiaotong University School of Medicine, China
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Kim S, Swaminathan S, Inlow M, Risacher SL, Nho K, Shen L, Foroud TM, Petersen RC, Aisen PS, Soares H, Toledo JB, Shaw LM, Trojanowski JQ, Weiner MW, McDonald BC, Farlow MR, Ghetti B, Saykin AJ. Influence of genetic variation on plasma protein levels in older adults using a multi-analyte panel. PLoS One 2013; 8:e70269. [PMID: 23894628 PMCID: PMC3720913 DOI: 10.1371/journal.pone.0070269] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Accepted: 06/17/2013] [Indexed: 12/24/2022] Open
Abstract
Proteins, widely studied as potential biomarkers, play important roles in numerous physiological functions and diseases. Genetic variation may modulate corresponding protein levels and point to the role of these variants in disease pathophysiology. Effects of individual single nucleotide polymorphisms (SNPs) within a gene were analyzed for corresponding plasma protein levels using genome-wide association study (GWAS) genotype data and proteomic panel data with 132 quality-controlled analytes from 521 Caucasian participants in the Alzheimer’s Disease Neuroimaging Initiative (ADNI) cohort. Linear regression analysis detected 112 significant (Bonferroni threshold p = 2.44×10−5) associations between 27 analytes and 112 SNPs. 107 out of these 112 associations were tested in the Indiana Memory and Aging Study (IMAS) cohort for replication and 50 associations were replicated at uncorrected p<0.05 in the same direction of effect as those in the ADNI. We identified multiple novel associations including the association of rs7517126 with plasma complement factor H-related protein 1 (CFHR1) level at p<1.46×10−60, accounting for 40 percent of total variation of the protein level. We serendipitously found the association of rs6677604 with the same protein at p<9.29×10−112. Although these two SNPs were not in the strong linkage disequilibrium, 61 percent of total variation of CFHR1 was accounted for by rs6677604 without additional variation by rs7517126 when both SNPs were tested together. 78 other SNP-protein associations in the ADNI sample exceeded genome-wide significance (5×10−8). Our results confirmed previously identified gene-protein associations for interleukin-6 receptor, chemokine CC-4, angiotensin-converting enzyme, and angiotensinogen, although the direction of effect was reversed in some cases. This study is among the first analyses of gene-protein product relationships integrating multiplex-panel proteomics and targeted genes extracted from a GWAS array. With intensive searches taking place for proteomic biomarkers for many diseases, the role of genetic variation takes on new importance and should be considered in interpretation of proteomic results.
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Affiliation(s)
- Sungeun Kim
- Center for Neuroimaging, Department of Radiology and Imaging Sciences, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
- Center for Computational Biology and Bioinformatics, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
| | - Shanker Swaminathan
- Center for Neuroimaging, Department of Radiology and Imaging Sciences, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
| | - Mark Inlow
- Center for Neuroimaging, Department of Radiology and Imaging Sciences, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
- Department of Mathematics, Rose-Hulman Institute of Technology, Terre Haute, Indiana, United States of America
| | - Shannon L. Risacher
- Center for Neuroimaging, Department of Radiology and Imaging Sciences, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
| | - Kwangsik Nho
- Center for Neuroimaging, Department of Radiology and Imaging Sciences, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
| | - Li Shen
- Center for Neuroimaging, Department of Radiology and Imaging Sciences, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
- Center for Computational Biology and Bioinformatics, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
| | - Tatiana M. Foroud
- Center for Neuroimaging, Department of Radiology and Imaging Sciences, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
- Center for Computational Biology and Bioinformatics, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
| | - Ronald C. Petersen
- Department of Neurology, Mayo Clinic, Rochester, Minnesota, United States of America
| | - Paul S. Aisen
- Department of Neurology, University of California San Diego, San Diego, California, United States of America
| | - Holly Soares
- Bristol Myers Squibb Co, Wallingford, Connecticut, United States of America
| | - Jon B. Toledo
- Department of Pathology and Laboratory Medicine, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania, United States of America
| | - Leslie M. Shaw
- Department of Pathology and Laboratory Medicine, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania, United States of America
| | - John Q. Trojanowski
- Department of Pathology and Laboratory Medicine, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania, United States of America
| | - Michael W. Weiner
- Departments of Radiology, Medicine and Psychiatry, University of California, San Francisco, San Francisco, California, United States of America
- Department of Veterans Affairs Medical Center, San Francisco, California, United States of America
| | - Brenna C. McDonald
- Center for Neuroimaging, Department of Radiology and Imaging Sciences, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
| | - Martin R. Farlow
- Department of Neurology, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
| | - Bernardino Ghetti
- Department of Pathology and Laboratory Medicine, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
| | - Andrew J. Saykin
- Center for Neuroimaging, Department of Radiology and Imaging Sciences, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
- Center for Computational Biology and Bioinformatics, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
- * E-mail:
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Kolovou GD, Mavrogeni S. Genetics of human hypertension, the role of angiotensinogen. should it be one of the drug target genes? Angiology 2013; 65:269-71. [PMID: 23719091 DOI: 10.1177/0003319713491135] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Poudel B, Yadav BK, Nepal AK, Jha B, Raut KB. Prevalence and association of microalbuminuria in essential hypertensive patients. NORTH AMERICAN JOURNAL OF MEDICAL SCIENCES 2012; 4:331-5. [PMID: 22912940 PMCID: PMC3421910 DOI: 10.4103/1947-2714.99501] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Microalbuminuria in hypertension has been described as an early sign of kidney damage and a predictor for end stage renal disease and cardiovascular disease. Thus, it is of great importance to study urinary albumin creatinine ratio and progression of kidney disease in hypertensive patients. AIMS The present study was undertaken to find out the prevalence and association of microalbuminuria in newly diagnosed essential hypertension. MATERIALS AND METHODS Newly diagnosed essential hypertensive cases (n = 106) and normotensive controls (n = 106) were enrolled. Hypertension was defined according to Joint national committee-VII definitions. Microalbuminuria was measured using an U-Albumin (NycoCard, Norway) and adjusted for urine creatinine. Descriptive statistics and testing of hypothesis were used for the analysis using SPSS 16 software. RESULTS 51.88% of hypertension cases and 13.2% of normotensive controls had microalbuminuria in total population (odds ratio 7.086, P-value <0.001). 46.67% of cases and 12.08% of controls had microalbuminuria in male population (odds ratio 6.375, P-value <0.001). Similarly, 58.7% of cases and 14.58% of controls had microalbuminuria in female population (odds ratio 8.32, P-value <0.001). CONCLUSIONS By showing strong association between microalbuminuria and hypertension, our findings suggest that microalbuminuria could be a useful marker to assess risk management of cardiovascular disease and renal disease.
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Affiliation(s)
- Bibek Poudel
- Department of Biochemsitry, Manipal College of Medical Sciences, Pokhara, Nepal
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Kobori H, Urushihara M. Augmented intrarenal and urinary angiotensinogen in hypertension and chronic kidney disease. Pflugers Arch 2012; 465:3-12. [PMID: 22918624 DOI: 10.1007/s00424-012-1143-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Revised: 08/03/2012] [Accepted: 08/06/2012] [Indexed: 12/22/2022]
Abstract
Activated intrarenal renin-angiotensin system plays a cardinal role in the pathogenesis of hypertension and chronic kidney disease. Angiotensinogen is the only known substrate for renin, which is the rate-limiting enzyme of the renin-angiotensin system. Because the levels of angiotensinogen are close to the Michaelis-Menten constant values for renin, angiotensinogen levels as well as renin levels can control the renin-angiotensin system activity, and thus, upregulation of angiotensinogen leads to an increase in the angiotensin II levels and ultimately increases blood pressure. Recent studies using experimental animal models have documented the involvement of angiotensinogen in the intrarenal renin-angiotensin system activation and development of hypertension. Enhanced intrarenal angiotensinogen mRNA and/or protein levels were observed in experimental models of hypertension and chronic kidney disease, supporting the important roles of angiotensinogen in the development and the progression of hypertension and chronic kidney disease. Urinary excretion rates of angiotensinogen provide a specific index of the intrarenal renin-angiotensin system status in angiotensin II-infused rats. Also, a direct quantitative method has been developed recently to measure urinary angiotensinogen using human angiotensinogen enzyme-linked immunosorbent assay. These data prompted us to measure urinary angiotensinogen in patients with hypertension and chronic kidney disease, and investigate correlations with clinical parameters. This short article will focus on the role of the augmented intrarenal angiotensinogen in the pathophysiology of hypertension and chronic kidney disease. In addition, the potential of urinary angiotensinogen as a novel biomarker of the intrarenal renin-angiotensin system status in hypertension and chronic kidney disease will be also discussed.
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Affiliation(s)
- Hiroyuki Kobori
- Department of Physiology, Tulane University Health Sciences Center, 1430 Tulane Avenue, #SL39, New Orleans, LA 70112-2699, USA.
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