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AGTR1  -  angiotensin II receptor, type 1

Homo sapiens

Synonyms: AG2S, AGTR1A, AGTR1B, AT1, AT1AR, ...
 
 
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Disease relevance of AGTR1

 

Psychiatry related information on AGTR1

 

High impact information on AGTR1

  • The AV3V region is well provided with angiotensinergic nerve endings and angiotensin AT1 receptors, the receptor type responsible for acute responses to ANG II, and it responds vigorously to the dipsogenic action of ANG II [8].
  • The vasopressor angiotensin II regulates vascular contractility and blood pressure through binding to type 1 angiotensin II receptors (AT1; refs 1, 2) [9].
  • Here we show that the AT1 receptor and the bradykinin (B2) receptor also communicate directly with each other [9].
  • AT1-receptor heterodimers show enhanced G-protein activation and altered receptor sequestration [9].
  • AT1 receptors mediate most known functions of angiotensin II, while AT2 receptors may be important developmentally [10].
 

Chemical compound and disease context of AGTR1

 

Biological context of AGTR1

  • Mean values of PWV were 11.6 +/- 2.7 m/s in AGTR1 AA homozygotes, 13.3 +/- 3.3 m/s in AC heterozygotes, and 15.3 +/- 4.3 m/s in CC homozygotes (P < .0001 and P < .00001 after adjustment for age and mean blood pressure, respectively) [15].
  • CONCLUSIONS: These results suggest that in hypertensive but not normotensive subjects, the AGTR1 and ACE genotypes are involved in the regulation of aortic rigidity [15].
  • RESULTS: There was no difference in allele frequency of AGTR1 and AGTR2 polymorphism among the three groups [2].
  • Five genetic polymorphisms of the RAAS (ACE, AGTR1, AGT, CMA, CYP11B2) were analyzed in all patients and the results of genetic analysis were correlated to severity of AS and LVH to determine the importance of the polymorphisms for LVH [16].
  • SNPs in the angiotensin II Type 1 receptor (AGTR1) and nitric oxide synthase 3 (NOS3) genes were significantly associated with CK activity [17].
 

Anatomical context of AGTR1

 

Associations of AGTR1 with chemical compounds

 

Physical interactions of AGTR1

 

Regulatory relationships of AGTR1

 

Other interactions of AGTR1

  • Beta-arrestin- and dynamin-dependent endocytosis of the AT1 angiotensin receptor [36].
  • In one informative family available for linkage analysis, FH-II does not segregate with either the AT1 gene or the CYP11B2 gene, or any other genetic defect in the chromosome 8q21-8qtel region [37].
  • CONCLUSION: The AGT A-20C and AGTR1 A1166C genotypes may influence resting BP response to ST, such that C-allele carriers at each of these loci reduce their resting BP in response to ST to a greater extent than A homozygotes [38].
  • Conversely, allocations of two human 3q markers (AGTR1 and IL12A) clearly excluded APC 3 [39].
  • Patients were genotyped for the angiotensinogen (M235T), the angiotensin-converting enzyme (insertion/deletion [I/D]), the angiotensin II type 1 receptor (AGTR1 A1166C), and the NOS3 (G894T) genes [40].
 

Analytical, diagnostic and therapeutic context of AGTR1

  • METHODS: ACE (I/D), angiotensin II type 1 receptor (AGTR1), and angiotensin II type 2 receptor (AGTR2) gene polymorphisms were investigated by polymerase chain reaction (PCR) and SACE levels were measured in three groups of patients: those with sarcoidosis or tuberculosis and normal controls [2].
  • METHODS: We genotyped the D/I polymorphism in the ACE gene, the C(-344)T polymorphism in the CYP11B2 gene, and the C(-535)T polymorphism in the AGTR1 gene among African American and Latino members of the Multiethnic Cohort Study (MEC) to determine their association with hypertension [3].
  • Northern blots revealed AT1 and AT2 receptor messenger RNA (mRNA) expressions in all samples examined; the former was much lower than the latter [41].
  • Confocal microscopy using fluorescein-conjugated angiotensin II showed that overexpression of dynamin-1(K44A) and dynamin-2(K44A) isoforms likewise inhibited agonist-induced AT1 receptor endocytosis in CHO cells [36].
  • METHODS: We investigated the impact of the ACE, AGT, AT1, and AT2 genotypes on renal allograft function in 148 patients (77 men, 71 women) who underwent transplantation over a 5-year period [42].

References

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  2. Association between angiotensin II receptor gene polymorphism and serum angiotensin converting enzyme (SACE) activity in patients with sarcoidosis. Takemoto, Y., Sakatani, M., Takami, S., Tachibana, T., Higaki, J., Ogihara, T., Miki, T., Katsuya, T., Tsuchiyama, T., Yoshida, A., Yu, H., Tanio, Y., Ueda, E. Thorax (1998) [Pubmed]
  3. Multiple Polymorphisms in the renin- angiotensin-aldosterone system (ACE, CYP11B2, AGTR1) and their contribution to hypertension in African Americans and Latinos in the multiethnic cohort. Henderson, S.O., Haiman, C.A., Mack, W. Am. J. Med. Sci. (2004) [Pubmed]
  4. Association between polymorphisms of the renin-angiotensin system and more severe histological forms of lupus nephritis. Sprovieri, S.R., Sens, Y.A., Martini Filho, D. Clin. Nephrol. (2005) [Pubmed]
  5. Haplotypes of the angiotensin II receptor genes AGTR1 and AGTR2 in women with normotensive pregnancy and women with preeclampsia. Plummer, S., Tower, C., Alonso, P., Morgan, L., Baker, P., Broughton-Pipkin, F., Kalsheker, N. Hum. Mutat. (2004) [Pubmed]
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  13. Aldosterone synthase (CYP11B2) -344 C/T polymorphism is related to antihypertensive response: result from the Swedish Irbesartan Left Ventricular Hypertrophy Investigation versus Atenolol (SILVHIA) trial. Kurland, L., Melhus, H., Karlsson, J., Kahan, T., Malmqvist, K., Ohman, P., Nyström, F., Hägg, A., Lind, L. Am. J. Hypertens. (2002) [Pubmed]
  14. Angiotensin II regulates phosphoinositide 3 kinase/Akt cascade via a negative crosstalk between AT1 and AT2 receptors in skin fibroblasts of human hypertrophic scars. Liu, H.W., Cheng, B., Yu, W.L., Sun, R.X., Zeng, D., Wang, J., Liao, Y.X., Fu, X.B. Life Sci. (2006) [Pubmed]
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  16. Lack of association among five genetic polymorphisms of the renin-angiotensin system and cardiac hypertrophy in patients with aortic stenosis. Ortlepp, J.R., Breithardt, O., Ohme, F., Hanrath, P., Hoffmann, R. Am. Heart J. (2001) [Pubmed]
  17. Physiogenomic analysis links serum creatine kinase activities during statin therapy to vascular smooth muscle homeostasis. Ruaño, G., Thompson, P.D., Windemuth, A., Smith, A., Kocherla, M., Holford, T.R., Seip, R., Wu, A.H. Pharmacogenomics (2005) [Pubmed]
  18. Polymorphisms in the angiotensinogen gene are associated with carotid intimal-medial thickening in females from a community-based population. Chapman, C.M., Palmer, L.J., McQuillan, B.M., Hung, J., Burley, J., Hunt, C., Thompson, P.L., Beilby, J.P. Atherosclerosis (2001) [Pubmed]
  19. A chymase gene variant is associated with atherosclerosis in venous coronary artery bypass grafts. Ortlepp, J.R., Janssens, U., Bleckmann, F., Lauscher, J., Merkelbach-Bruse, S., Hanrath, P., Hoffmann, R. Coron. Artery Dis. (2001) [Pubmed]
  20. Polymorphisms of the renin-angiotensin system genes in Brazilian patients with lupus nephropathy. Sprovieri, S.R., Sens, Y.A. Lupus (2005) [Pubmed]
  21. Gene expression profiling reveals novel TGFbeta targets in adult lung fibroblasts. Renzoni, E.A., Abraham, D.J., Howat, S., Shi-Wen, X., Sestini, P., Bou-Gharios, G., Wells, A.U., Veeraraghavan, S., Nicholson, A.G., Denton, C.P., Leask, A., Pearson, J.D., Black, C.M., Welsh, K.I., du Bois, R.M. Respir. Res. (2004) [Pubmed]
  22. Intracellular trafficking of angiotensin II and its AT1 and AT2 receptors: evidence for selective sorting of receptor and ligand. Hein, L., Meinel, L., Pratt, R.E., Dzau, V.J., Kobilka, B.K. Mol. Endocrinol. (1997) [Pubmed]
  23. F2-Isoprostane level is associated with the angiotensin II type 1 receptor -153A/G gene polymorphism. Ormezzano, O., Cracowski, J.L., Mallion, J.M., Poirier, O., Bessard, J., Briançon, S., François, P., Baguet, J.P. Free Radic. Biol. Med. (2005) [Pubmed]
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  26. Congenital hyperreninemic hypoaldosteronism unlinked to the aldosterone synthase (CYP11B2) gene. Kayes-Wandover, K.M., Tannin, G.M., Shulman, D., Peled, D., Jones, K.L., Karaviti, L., White, P.C. J. Clin. Endocrinol. Metab. (2001) [Pubmed]
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