calcium chloride (CaCl 2), a granular white chemical with an unpleasant taste. It is used in a concentrated solution of the chloride salt of calcium to replenish calcium in the blood and also has uses in cardiac resuscitation.
Neuropeptides are small protein-like molecules (peptides) used by neurons to communicate with each other. They are neuronal signaling molecules that influence the activity of the brain in specific ways.
Brain-type natriuretic peptide (BNP; 32 amino acids), although first identified in the brain, is primarily produced by ventricular tissue in the heart, and like ANP, there is enhanced synthesis and release of BNP during heart failure. Neutral endopeptidase (NEP) is a circulating enzyme that degrades natriuretic peptides.