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Angiotensin II (Ang II) is a medication that is used to treat hypotension resulting from septic shock or other distributive shock. It is a synthetic vasoconstrictor peptide that is identical to human hormone angiotensin II [ 3 ] and is marketed under the brand name Giapreza .
High concentrations of Angiotensin II can constrict the glomerular mesangium, reducing the area for glomerular filtration. Angiotensin II is a sensitizer to tubuloglomerular feedback, preventing an excessive rise in GFR. Angiotensin II causes the local release of prostaglandins, which, in turn, antagonize renal vasoconstriction.
Angiotensin II is the major bioactive product of the renin–angiotensin system, binding to receptors on intraglomerular mesangial cells, causing these cells to contract along with the blood vessels surrounding them; and to receptors on the zona glomerulosa cells, causing the release of aldosterone from the zona glomerulosa in the adrenal cortex.
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Angiotensin II is a potent vasoconstrictor in a substrate concentration-dependent manner. [10] Angiotensin II binds to the type 1 angiotensin II receptor (AT1), which sets off a number of actions that result in vasoconstriction and therefore increased blood pressure.
There are many classes of antihypertensives, which lower blood pressure by different means. Among the most important and most widely used medications are thiazide diuretics, calcium channel blockers, angiotensin-converting enzyme inhibitors (ACE inhibitors), angiotensin II receptor blockers or antagonists (ARBs), and beta blockers.
Antihypertensive agents comprise multiple classes of compounds that are intended to manage hypertension (high blood pressure). Antihypertensive therapy aims to maintain a blood pressure goal of <140/90 mmHg in all patients, as well as to prevent the progression or recurrence of cardiovascular diseases (CVD) in hypertensive patients with established CVD. [2]
11609 Ensembl ENSG00000180772 ENSMUSG00000068122 UniProt P50052 P35374 RefSeq (mRNA) NM_000686 NM_001385624 NM_007429 RefSeq (protein) NP_000677 NP_031455 Location (UCSC) Chr X: 116.17 – 116.17 Mb Chr X: 21.35 – 21.36 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Angiotensin II receptor type 2, also known as the AT 2 receptor is a protein that in humans is encoded by the AGTR2 ...