Zoniporide (CP-597396) hydrochloride hydrate is a potent and selective inhibitor of sodium-hydrogen exchanger type 1 (NHE-1). Zoniporide hydrochloride hydrate inhibits human NHE-1 (IC50=14 nM), and has >150-fold selectivity versus other NHE isoforms. Zoniporide hydrochloride hydrate potently inhibits ex vivo NHE-1-dependent swelling of human platelets (IC50=59 nM)[1][2].
Zoniporide hydrochloride hydrate (0.25-4 mg/kg; i.v.; every hour for 2 hours) elicits a dose-dependent reduction in infarct size (ED50=0.45 mg/kg/h) in open chest anesthetized rabbits[1].Zoniporide exhibits moderate plasma protein binding, has a t1/2 of 1.5 hours in monkeys, and has one major active metabolite[1].Zoniporide hydrochloride hydrate treatment shows the AUC0-∞ and t1/2 are 0.07 μg h/mL and 0.5 hours, respectively[2]. Animal Model: Rabbit[1]
[1]. Tracey WR, et al. Zoniporide: a potent and selective inhibitor of the human sodium-hydrogen exchanger isoform 1 (NHE-1). Cardiovasc Drug Rev. 2003 Spring;21(1):17-32. [2]. Guzman-Perez A, et al. Discovery of zoniporide: a potent and selective sodium-hydrogen exchanger type 1 (NHE-1) inhibitor with high aqueous solubility. Bioorg Med Chem Lett. 2001 Mar 26;11(6):803-7.