A-80b is a synthesized pyridazino[4,5-b]indole derivate with potent and long-lasting antihypertensive activity. The decrease in diastolic pressure was greater than the decrease in systolic pressure and cardiac frequency was not modified significantly. A-8
AAA is an antagonist of G protein-coupled receptor 75 (GPR75).1It increases basal GPR75 protein levels and inhibits 20-HETE-induced reductions in GPR75 protein levels in PC3 cells. AAA (5 and 10 μM) also reduces 20-HETE-induced phosphorylation of EGFR, NF-κB, and Akt in, and cell migration of, PC3 cells.In vivo, AAA (10 mg/kg per day) reduces systolic blood pressure, albuminuria, renal angiotensin II levels, and cardiac hypertrophy in a Cyp1a1-Ren-2 transgenic rat model of malignant hypertension when administered prior to induction or after establishment of hypertension.2
1.Cárdenas, S., Colombero, C., Panelo, L., et al.GPR75 receptor mediates 20-HETE-signaling and metastatic features of androgen-insensitive prostate cancer cellsBiochim. Biophys. Acta Mol. Cell Biol. Lipids1865(2)158573(2020) 2.Sedláková, L., Kikerlová, S., Husková, Z., et al.20-Hydroxyeicosatetraenoic acid antagonist attenuates the development of malignant hypertension and reverses it once established: a study in Cyp1a1-Ren-2 transgenic ratsBiosci. Rep.38(5)BSR20171496(2018)
C2 Ceramide (d14:1/2:0) is a bioactive sphingolipid. Dietary administration of C2 ceramide (d14:1/2:0) (100 μM) induces lipotoxic cardiomyopathy via increasing diastolic and systolic diameter as well as reducing fractional shortening and the number of normal cardiac contractile events in Drosophila.
Quazinone is a selective inhibitor of phosphodiesterase 3 (PDE3) with positive inotropic and vasodilating properties.1,2 It induces relaxation of precontracted isolated human cavernous smooth muscle (IC50 = 4.2 μM).1 Quazinone (10-300 μg/kg) increases myocardial contractile force in anesthetized open-chest dogs in a dose-dependent manner, as well as decreases systolic and diastolic blood pressure.2 It also inhibits DNA synthesis induced by the PDGF isoform PDGF-BB in bovine coronary artery smooth muscle cells in a concentration-dependent manner.3
18-Hydroxy-11-deoxy Corticosterone (18-OH-DOC) is a mineralocorticoid produced by the zona fasciculata of the adrenal gland, with its biosynthesis regulated by adrenocorticotropic hormone (ACTH) and angiotensin II. This regulation heightens 18-OH-DOC production in isolated human adrenal glomerulosa cells and allows for its formation from 11-deoxy corticosterone (DOC) in human SK-MEL188 melanoma cells. As an intermediate in progesterone metabolism, 18-OH-DOC can be converted to aldosterone in rat adrenal glands' capsular portion. Its continuous infusion (200 μg/rat per day) has been shown to raise systolic blood pressure in uninephrectomized saline-drinking rats, and elevated plasma levels of 18-OH-DOC have been observed in the adb/db mouse model of type 2 diabetes.
Oblongine chloride may have potential haemodynamic effects, it can cause a dose-dependent reduction of systolic and diastolic blood pressure, and that these effects are not mediated by α²-adrenergic receptor stimulation.
N-methyltaxol C and paclitaxel can produce a positive inotropic effect in papillary muscle, without alterations in the action potential. They can induced conduction arrhythmias and reduce coronary flow and left ventricular systolic pressure in the isolate