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Association of angiotensin II type 1 receptor (A1166C) gene polymorphism and its increased expression in essential hypertension: A case-control study

PLoS ONE, ISSN: 1932-6203, Vol: 9, Issue: 7, Page: e101502
2014
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Effects of AGT and AGTR1 Genetic Polymorphisms and Changes in Blood Pressure Over a Five-Year Follow-Up

Introduction Hypertension is an important risk factor for total mortality and cardiovascular disease (CVD) worldwide.1 As a result, the World Health Organization set a target

Article Description

Objectives: Hypertension is one of the major cardiovascular diseases. It affects nearly 1.56 billion people worldwide. The present study is about a particular genetic polymorphism (A1166C), gene expression and protein expression of the angiotensin II type I receptor (AT1R) (SNP ID: rs5186) and its association with essential hypertension in a Northern Indian population. Methods: We analyzed the A1166C polymorphism and expression of AT1R gene in 250 patients with essential hypertension and 250 normal healthy controls. Results: A significant association was found in the AT1R genotypes (AC+CC) with essential hypertension (χ = 22.48, p = 0.0001). Individuals with CC genotypes were at 2.4 times higher odds (p = 0.0001) to develop essential hypertension than individuals with AC and AA genotypes. The statistically significant intergenotypic variation in the systolic blood pressure was found higher in the patients with CC (169.4±36.3 mmHg) as compared to that of AA (143.5±28.1 mmHg) and AC (153.9±30.5 mmHg) genotypes (p = 0.0001). We found a significant difference in the average delta-CT value (p = 0.0001) wherein an upregulated gene expression (approximately 16 fold) was observed in case of patients as compared to controls. Furthermore, higher expression of AT1R gene was observed in patients with CC genotype than with AC and AA genotypes. A significant difference (p = 0.0001) in the protein expression of angiotensin II Type 1 receptor was also observed in the plasma of patients (1.49±0.27) as compared to controls (0.80±0.24). Conclusion: Our findings suggest that C allele of A1166C polymorphism in the angiotensin II type 1 receptor gene is associated with essential hypertension and its upregulation could play an important role in essential hypertension. © 2014 Chandra et al.

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http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84903760853&origin=inward; http://dx.doi.org/10.1371/journal.pone.0101502; http://www.ncbi.nlm.nih.gov/pubmed/24992666; https://dx.plos.org/10.1371/journal.pone.0101502.g003; http://dx.doi.org/10.1371/journal.pone.0101502.g003; https://dx.plos.org/10.1371/journal.pone.0101502.g001; http://dx.doi.org/10.1371/journal.pone.0101502.g001; https://dx.plos.org/10.1371/journal.pone.0101502.t004; http://dx.doi.org/10.1371/journal.pone.0101502.t004; https://dx.plos.org/10.1371/journal.pone.0101502.t003; http://dx.doi.org/10.1371/journal.pone.0101502.t003; https://dx.plos.org/10.1371/journal.pone.0101502; https://dx.plos.org/10.1371/journal.pone.0101502.t001; http://dx.doi.org/10.1371/journal.pone.0101502.t001; https://dx.plos.org/10.1371/journal.pone.0101502.g005; http://dx.doi.org/10.1371/journal.pone.0101502.g005; https://dx.plos.org/10.1371/journal.pone.0101502.g002; http://dx.doi.org/10.1371/journal.pone.0101502.g002; https://dx.plos.org/10.1371/journal.pone.0101502.t002; http://dx.doi.org/10.1371/journal.pone.0101502.t002; https://dx.plos.org/10.1371/journal.pone.0101502.g004; http://dx.doi.org/10.1371/journal.pone.0101502.g004; https://dx.doi.org/10.1371/journal.pone.0101502.g003; https://journals.plos.org/plosone/article/figure?id=10.1371/journal.pone.0101502.g003; https://dx.doi.org/10.1371/journal.pone.0101502.g004; https://journals.plos.org/plosone/article/figure?id=10.1371/journal.pone.0101502.g004; https://dx.doi.org/10.1371/journal.pone.0101502.t004; https://journals.plos.org/plosone/article/figure?id=10.1371/journal.pone.0101502.t004; https://dx.doi.org/10.1371/journal.pone.0101502.t001; https://journals.plos.org/plosone/article/figure?id=10.1371/journal.pone.0101502.t001; https://dx.doi.org/10.1371/journal.pone.0101502.t002; https://journals.plos.org/plosone/article/figure?id=10.1371/journal.pone.0101502.t002; https://dx.doi.org/10.1371/journal.pone.0101502; https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0101502; https://dx.doi.org/10.1371/journal.pone.0101502.g001; https://journals.plos.org/plosone/article/figure?id=10.1371/journal.pone.0101502.g001; https://dx.doi.org/10.1371/journal.pone.0101502.g002; https://journals.plos.org/plosone/article/figure?id=10.1371/journal.pone.0101502.g002; https://dx.doi.org/10.1371/journal.pone.0101502.t003; https://journals.plos.org/plosone/article/figure?id=10.1371/journal.pone.0101502.t003; https://dx.doi.org/10.1371/journal.pone.0101502.g005; https://journals.plos.org/plosone/article/figure?id=10.1371/journal.pone.0101502.g005; http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0101502; https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0101502&type=printable; http://dx.plos.org/10.1371/journal.pone.0101502.g002; http://dx.plos.org/10.1371/journal.pone.0101502; http://dx.plos.org/10.1371/journal.pone.0101502.g003; http://dx.plos.org/10.1371/journal.pone.0101502.t003; http://dx.plos.org/10.1371/journal.pone.0101502.t002; http://dx.plos.org/10.1371/journal.pone.0101502.g001; http://dx.plos.org/10.1371/journal.pone.0101502.g004; http://dx.plos.org/10.1371/journal.pone.0101502.t001; http://www.plosone.org/article/metrics/info:doi/10.1371/journal.pone.0101502; http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0101502&type=printable; http://dx.plos.org/10.1371/journal.pone.0101502.t004; http://dx.plos.org/10.1371/journal.pone.0101502.g005; http://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0101502

Sudhir Chandra; Rajiv Narang; Vishnubhatla Sreenivas; Jagriti Bhatia; Daman Saluja; Kamna Srivastava; Balraj Mittal

Public Library of Science (PLoS)

Biochemistry, Genetics and Molecular Biology; Agricultural and Biological Sciences; Multidisciplinary

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