UC-1728 is a potent rabbit soluble epoxide hydrolase (sEH) inhibitor, with an IC50 of 2 nM on rabbit liver.
Miotic, fixed pupils are observed in the treated eyes of both groups receiving LPS injections but the difference in pupillary light reflex scores is only significantly increased in the UC-1728/LPS treated group relative to the PBS group at 6 h post-injection[1]. Pretreatment with UC-1728 (t-TUCB) at 10 and 30 mg/kg, p.o., significantly prevents ISO induced increase in heart weight and elevation of CK-MB and LDH levels (p<0.05), indicating its cardioprotective effect against ISO induced cardiac injury. At 3 mg/kg, p.o. UC-1728 only shows significant protection against heart weight changes. Pretreatment with UC-1728 at 3, 10 and 30 mg/kg, p.o., significantly reduces the ISO induced infarct size (p<0.05) when compared to control. The calculated percentage reductions for these doses are found to by 15.90, 46.60 and 40.44%, respectively[2]. Inhibition of sEH with UC-1728 is associated with a significant improvement in pain scores in one horse with laminitis whose pain is refractory to the standard of care therapy. No adverse effects are noticed[3].
[1]. McLellan GJ, et al. Effect of a Soluble Epoxide Hydrolase Inhibitor, UC1728, on LPS-Induced Uveitis in the Rabbit. J Ocul Biol. 2016 Jan;4(1). [2]. Shrestha A, et al. Soluble epoxide hydrolase inhibitor, t-TUCB, protects against myocardial ischaemic injury in rats. J Pharm Pharmacol. 2014 Sep;66(9):1251-8. [3]. Guedes AG, et al. Use of a soluble epoxide hydrolase inhibitor as an adjunctive analgesic in a horse with laminitis. Vet Anaesth Analg. 2013 Jul;40(4):440-8.