BIBP3226 TFA is an effective and selective antagonist of neuropeptide Y Y1 (NPY Y1) and neuropeptide FF (NPFF) receptor (Kis: 1.1, 79, and 108 nM for rNPY Y1, hNPFF2, and rNPFF).
RFRP-1(human) TFA, an endogenous NPFF receptor agonist, exhibits potent activity with EC50 values of 0.0011 nM for NPFF2 and 29 nM for NPFF1. It significantly diminishes the contractile function of isolated rat and rabbit cardiac myocytes. Moreover, it decreases heart rate, stroke volume, ejection fraction, and cardiac output, while elevating plasma prolactin levels in rats.
Potent endogenous NPFF receptor agonist (EC50 values are 0.0011 and 29 nM for NPFF2 and NPFF1, respectively). Attenuates contractile function of isolated rat and rabbit cardiac myocytes. Reduces heart rate, stroke volume, ejection fraction and cardiac out