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The angiotensin II receptor blockers have differing potencies in relation to blood pressure control, with statistically differing effects at the maximal doses. [12] When used in clinical practice, the particular agent used may vary based on the degree of response required. [citation needed] Some of these drugs have a uricosuric effect. [13] [14]
The angiotensin receptor blockers (ARBs), also called angiotensin (AT1) receptor antagonists or sartans, are a group of antihypertensive drugs that act by blocking the effects of the hormone angiotensin II (Ang II) in the body, thereby lowering blood pressure.
The angiotensin receptor is activated by the vasoconstricting peptide angiotensin II. The activated receptor in turn couples to G q/11 and G i/o and thus activates phospholipase C and increases the cytosolic Ca 2+ concentrations, which in turn triggers cellular responses such as stimulation of protein kinase C .
The combination is sometimes described as an "angiotensin receptor-neprilysin inhibitor" (ARNi). [9] In 2016, the American College of Cardiology/American Heart Association Task Force recommended it as a replacement for an ACE inhibitor or an angiotensin receptor blocker in people with heart failure with reduced ejection fraction. [10]
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Angiotensin II receptor blockers (ARBs) work by inhibiting the action of angiotensin II on, specifically AT1 receptors to prevent the vasoconstrictor effects of this receptor and block the peripheral sympathetic activity. [9] Azilsartan, candesartan, eprosartan, irbesartan, olmesartan, telmisartan, valsartan
Angiotensin II receptor type 1 (AT1) is a G q/11-coupled G protein-coupled receptor (GPCR) and the best characterized angiotensin receptor. It is encoded in humans by the AGTR1 gene. AT1 has vasopressor effects and regulates aldosterone secretion. It is an important effector controlling blood pressure and volume in the cardiovascular system.
Valsartan, sold under the brand name Diovan among others, is a medication used to treat high blood pressure, heart failure, and diabetic kidney disease. [8] It belongs to a class of medications referred to as angiotensin II receptor blockers (ARBs).