vasoconstriction

Clazosentan (Ro 61-1790) is a selective antagonist of the endothelin A receptor (ETAreceptor) that inhibits ET-1-mediated vasoconstriction, preventing cerebral vasospasm and vasospasm-associated cerebral infarction.

Aprikalim (RP 52891) is an adenosine triphosphate potassium channel (KATP) opener that protects against nerve damage in a rabbit model of spinal cord ischemia.Aprikalim inhibits vasoconstriction and inhibits the elevation of [Ca2+]i during myocardial paralysis, and can be used to study cardiovascular disease.

Ketanserin (Ketanserinum) is a quinazoline derivative and serotonin (5-hydroxytryptamine, 5HT) receptor subtype 2 (5-HTR2) antagonist with potential antihypertensive and antiplatelet activities. Following administration, ketanserin binds to and inhibits the signaling mediated by 5-HTR2, which inhibits serotonin-dependent vasoconstriction and platelet activation.

Tolazoline (Benzalolin), a non-selective competitive α-adrenergic receptor antagonist, is used as a vasodilator to treat spasms of peripheral blood vessels. It has also been used successfully as an antidote to reverse the severe peripheral vasoconstriction as a result of overdose with certain 5-HT2A agonist drugs.

Perindopril erbumine (S9490-3) is the tert-butylamine salt of perindopril, the ethyl ester of a non-sulfhydryl angiotensin-converting enzyme (ACE) inhibitor with antihypertensive activity. Upon hydrolysis, Perindopril erbumine (S9490-3) is converted to its active form perindoprilat, inhibiting ACE and the conversion of angiotensin I to angiotensin II; consequently, angiotensin II-mediated vasoconstriction and angiotensin II-stimulated aldosterone secretion from the adrenal cortex are inhibited and diuresis and natriuresis ensue.

Uridine-5'-diphosphate disodium salt (UDP disodium salt) is a specific agonist of the P2Y6 receptors (EC50 = 13 nM for human P2Y6), stimulating the production of inflammatory mediators, phagocytosis, and vasoconstriction. Uridine-5'-diphosphate disodium salt also acts as an antagonist of P2Y14.

Candesartan Cilexetil (TCV-116) is an angiotensin II receptor antagonist (IC50: 0.26 nM). Upon hydrolysis to candesartan during gastrointestinal absorption, it selectively competes with angiotensin II for binding to the angiotensin II receptor subtype 1 (AT1) in vascular smooth muscle, blocking angiotensin II-mediated vasoconstriction and inducing vasodilatation.

Phenoxybenzamine hydrochloride (NCI-c01661) is the hydrochloride salt form of phenoxybenzamine, a synthetic, dibenzamine alpha-adrenergic antagonist with antihypertensive and vasodilatory properties. Phenoxybenzamine non-selectively and irreversibly blocks the postsynaptic alpha-adrenergic receptor in smooth muscle, thereby preventing vasoconstriction, relieving vasospasms, and decreasing peripheral resistance. Reflex tachycardia may occur and may be enhanced by blockade of alpha-2 receptors which enhances norepinephrine release. Phenoxybenzamine is reasonably anticipated to be a human carcinogen.

Danshensu sodium salt (Sodium Danshensu) is sodium salt of danshensu from the widely used Chinese herb Danshen. It can inhibited phenylephrine- and CaCl2-induced vasoconstriction in Ca2+-free medium.

Neocuproine is a copper(I) chelator that enhances the purinergic component of vasoconstriction induced by electric field stimulation, and is often used as a ligand reagent and copper ion detector.Neocuproine forms stable complexes with copper ions and can play a catalytic role in certain chemical reactions and analytical methods.Neocuproine acts as a redox-active on the iron and cobalt ligand platform for protection against oxidative damage in NSC34 cells.

Methoxamine hydrochloride (Methoxamine HCl) is an alpha-1 adrenergic agonist that causes prolonged peripheral VASOCONSTRICTION.

TRV120027 TFA is a β-arrestin-1-biased agonist of the angiotensin II receptor type 1 (AT1R) and engages ß-arrestins while blocking G-protein signaling.

Angiotensin amide, an octapeptide amide, can be used to increase blood pressure by vasoconstriction.

Forasartan is a non - peptide angiotensin II receptor antagonist with antihypertensive activity. Forasartan and angiotensin II compete to bind AT1 receptor subtypes in vascular smooth muscle, thereby blocking angiotensin II-mediated vasoconstriction, lead

5(6)-EET is a fully racemic version of the enantiomeric forms biosynthesized from arachidonic acid by cytochrome P450 enzymes. In solution, 5(6)-EET degrades into 5,6-DiHET and 5(6)-δ-lactone, which can be converted to 5(6)-DiHET and quantified by GC-MS. In neuroendocrine cells, such as the anterior pituitary and pancreatic islets, 5(6)-EET has been implicated in the mobilization of calcium and hormone secretion. 5(6)-EET is an inhibitor of T-type voltage-gated calcium channels (Cav3) that inhibits isoforms Cav3.1, Cav3.2 (IC50 = 0.54 μM), and Cav3.3 and decreases nifedipine-resistant phenylephrine-induced vasoconstriction in isolated mouse mesenteric arteries via Cav3.2 blockade when used at a concentration of 3 μM. In addition, it is a substrate of COX-1 and COX-2, as measured by oxygen consumption and product formation assays when used at a concentration of 50 μM. (±)5(6)-EET is provided as a mixture of the free acid and lactone.

Nadolol-d9 (Mixture of Diastereomers) is a deuterated compound of Nadolol. Nadolol has a CAS number of 42200-33-9. Nadolol is a non-selective beta-adrenergic antagonist with antihypertensive and antiarrhythmic activities. Nadolol competitively blocks beta-1 adrenergic receptors located in the heart and vascular smooth muscle, inhibiting the activities of the catecholamines epinephrine and norepinephrine and producing negative inotropic and chronotropic effects. This agent exhibits antiarrhythmic activity via the impairment of atrioventricular (AV) node conduction and a corresponding reduction in sinus rate. In the kidney, inhibition of the beta-2 receptor within the juxtaglomerular apparatus results in the inhibition of renin production and a subsequent reduction in angiotensin II and aldosterone levels, thus inhibiting angiotensin II-dependent vasoconstriction and aldosterone-dependent water retention.

Sarafotoxin S6d (STX-b) is a peptide toxin isolated from the venom of the Israeli burrowing asp. It induces various Electrocardiogram (ECG) changes such as myocardial ischemia and hyperkalemia. In rat aortas, Sarafotoxin S6d causes intense vasoconstriction dependent on extracellular calcium ions and exhibits positive inotropic effects in rat atria. This compound is useful for research into cardiovascular diseases.

Neuropeptide Y (NPY), a neuropeptide, plays roles in regulating appetite, vasoconstriction, cardiac contractility, and intestinal secretion, acting as an agonist for NPY receptors Y1, Y2, and Y5. Expressed ubiquitously, NPY modulates cellular responses by selectively inhibiting forskolin-induced cAMP accumulation in L-M(TK-) cells expressing rat Y1 or Y2 and in HEK293 cells expressing rat Y5, more so than in cells expressing rat Y4 receptors (EC50s = 0.15, 2.7, 0.66, and >1,000 nM, respectively). Additionally, it elevates perfusion pressure in isolated guinea pig hearts (EC30 = 1.3 nM) and, when administered intracerebroventricularly at 300 pmol/animal, it notably increases food intake in rats.

Naratriptan Hydrochloride is the hydrochloride salt form of naratriptan, a sulfonamide with selective serotonin (5-HT) 1 receptor agonistic activity and anti-migraine property. Naratriptan hydrochloride (GR-85548A hydrochloride) binds selectively and with high affinity to the 5-HT1D and 5-HT1B receptor subtypes. Activation of these 5-HT1D B receptors located on intracranial blood vessels leads to vasoconstriction and provides relief of migraine headaches. Naratriptan hydrochloride may also exerts its effect by stimulation of 5-HT1D 1B receptors on sensory nerve endings in the trigeminal system thereby decreasing the release of pro-inflammatory neuropeptides.

Amastatin HCl is an inhibitor of aminopeptidase. It also induces vasoconstriction.

[Pro34]Neuropeptide Y, porcine functions as a selective agonist for the NPY (Y1) receptor and induces vasoconstriction in the guinea pig's caval vein [1].

Prostaglandin A1 (PGA1) was first isolated as a dehydration product of the PGE1 compounds found in human semen. 15-keto PGA1 is a metabolite of PGA1, produced by 15-hydroxy PG dehydrogenase. It can be produced from PGA1 in pig lung, trachea, aorta, and pulmonary artery tissue preparations. 15-keto PGA1, given at a concentration of 6 μM, causes vasoconstriction of rabbit lung that is comparable to that induced by angiotensin II.

Tetrahydrozoline (Tetryzoline) nitrate is a derivative of imidazoline. It is an α-adrenergic agonist that causes vasoconstriction. Tetrahydrozoline is widely used for the nasal congestion and conjunctival congestion research [1] [2].

Auriculin A, a synthetic atrial natriuretic factor (ANF), exhibits hemodynamic properties by antagonizing renal vasoconstriction in dogs and affects arterial baroreflex regulation of heart rate, systemic blood pressure, and constant flow-perfused hind limb perfusion pressure in rabbits [1] [2].