sympathetic

Angiotensin II human (Ang II) is a biologically active peptide, a vasoconstrictor. Angiotensin II interacts with AT1R and AT2R to regulate blood pressure, stimulate sympathetic nerves, and increase aldosterone biosynthesis and renal activity in humans.

Norepinephrine bitartrate is a precursor of epinephrine. Norepinephrine is the principal transmitter of most postganglionic sympathetic fibers and of the diffuse projection system in the brain arising from the locus ceruleus.

Angiotensin II human TFA, a potent vasoconstrictor within the renin angiotensin system, plays a pivotal role in human blood pressure regulation primarily through interactions with the G-protein-coupled receptors Angiotensin II type 1 receptor (AT1R) and Angiotensin II type 2 receptor (AT2R). It not only prompts sympathetic nervous stimulation, aldosterone biosynthesis, and renal effects but also fosters growth in vascular smooth muscle cells and boosts collagen type I and III synthesis in fibroblasts. This action results in the thickening of the vascular wall and myocardium, alongside fibrosis. Additionally, Angiotensin II human TFA triggers apoptosis and encourages capillary formation from endothelial cells through the LOX-1 dependent redox-sensitive pathway [1] [2] [3] [4].