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Pathway Description
Telmisartan Action Pathway
Homo sapiens
Drug Action Pathway
Telmisartan (also named Micardis) is an antagonist of angiotensin II receptor blockers (ARBs). Telmisartan competes with angiotensin II to bind type-1 angiotensin II receptor (AT1) in many tissues (e.g. vascular smooth muscle, the adrenal glands, etc.) to prevent increasing sodium, water reabsorption and peripheral resistance (that will lead to increasing blood pressure) via aldosterone secretion that is caused by angiotensin II. Therefore, action of telmisartan binding to AT1 will result in decreasing blood pressure. For more information on the effects of aldosterone on electrolyte and water excretion, refer to the description of the \spironolactone\:http://pathman.smpdb.ca/pathways/SMP00134/pathway or \triamterene\:http://pathman.smpdb.ca/pathways/SMP00132/pathway pathway, which describes the mechanism of direct aldosterone antagonists. Telmisartan is an effective agent for reducing blood pressure and may be used to treat essential hypertension and heart failure.
References
Telmisartan Pathway References
Bader, M. Renin-angiotensin-aldosterone system. In S. Offermanns, & W. Rosenthal (Eds.). Encyclopedic reference of molecular pharmacology (2004) p.810-814. Berlin, Germany: Springer.
Micardis. (2009). e-CPS (online version of Compendium of Pharmaceuticals and Specialties). Retrieved December 28, 2009.
Stanfield, C.L., & Germann, W.J. Principles of human physiology (3rd ed.) (2008). San Francisco, CA: Pearson Education, Inc.;
Angiotensin Metabolism References
Hussain M, Awan FR: Hypertension regulating angiotensin peptides in the pathobiology of cardiovascular disease. Clin Exp Hypertens. 2018;40(4):344-352. doi: 10.1080/10641963.2017.1377218. Epub 2017 Nov 30.
Pubmed: 29190205
Mori J, Zhang L, Oudit GY, Lopaschuk GD: Impact of the renin-angiotensin system on cardiac energy metabolism in heart failure. J Mol Cell Cardiol. 2013 Oct;63:98-106. doi: 10.1016/j.yjmcc.2013.07.010. Epub 2013 Jul 22.
Pubmed: 23886814
Yim HE, Yoo KH: Renin-Angiotensin system - considerations for hypertension and kidney. Electrolyte Blood Press. 2008 Jun;6(1):42-50. doi: 10.5049/EBP.2008.6.1.42. Epub 2008 Jun 30.
Pubmed: 24459521
Manrique C, Lastra G, Gardner M, Sowers JR: The renin angiotensin aldosterone system in hypertension: roles of insulin resistance and oxidative stress. Med Clin North Am. 2009 May;93(3):569-82. doi: 10.1016/j.mcna.2009.02.014.
Pubmed: 19427492
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