Compound4880, also known as Poly-p-methoxyphenethylmethylamine, is a commonly utilized mast cell activator in animal and tissue models. This compound exerts its effect by stimulating trimeric G-proteins at the mast cell membrane, triggering degranulation through both phospholipase C and D pathways.
Escin IIB has positive effects on acute inflammation in animals, it can inhibit the induced by serotonin in rats, the hind paw edema induced by carrageenin, and the scratching behavior induced by compound4880 in mice.
Confluentin has antimicrobial activity against the gram-positive bacteria.Confluentin significantly inhibits compound4880-induced histamine release from rat peritoneal mast cells. Confluentin also shows weak cytotoxicity against four human tumor cell li
Tripeptide substance P (SP) antagonist (IC50 = 90 μM). Also inhibits binding of SP to Mas-related GPCR (MRGPR) X2. Inhibits SP-induced IgE-independent degranulation of mast cells in vitro. Inhibits compound4880-induced MRGPRX2 activation and scratching