Title : Improving effects of topical administration of iganidipine, a new calcium channel blocker, on the impaired visual evoked potential after endothelin-1 injection into the vitreous body of rabbits.

Pub. Date : 2000 Feb

PMID : 10617910






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1 Improving effects of topical administration of iganidipine, a new calcium channel blocker, on the impaired visual evoked potential after endothelin-1 injection into the vitreous body of rabbits. iganidipine endothelin-1 Oryctolagus cuniculus
2 PURPOSE: To investigate the effect of topical iganidipine, a new dihydropyridine derivative calcium channel blocker, on impairment of the ocular circulation caused by endothelin-1 (ET-1), we examined modification of the effect of ET-1 on visual-evoked potential (VEP) in albino rabbits. iganidipine endothelin-1 Oryctolagus cuniculus
3 PURPOSE: To investigate the effect of topical iganidipine, a new dihydropyridine derivative calcium channel blocker, on impairment of the ocular circulation caused by endothelin-1 (ET-1), we examined modification of the effect of ET-1 on visual-evoked potential (VEP) in albino rabbits. iganidipine endothelin-1 Oryctolagus cuniculus
4 Then modification of the effect of ET-1 on the VEP by iganidipine was examined. iganidipine endothelin-1 Oryctolagus cuniculus
5 One hour after the topical instillation of 0.1% iganidipine (20 microl) or its vehicle, 10 pmol of ET-1 was injected into the vitreous in rabbits. iganidipine endothelin-1 Oryctolagus cuniculus
6 Topical administration of 0.1% iganidipine significantly suppressed the reduction of VEP amplitude for the entire 2-hour monitoring period after intravitreal injection of 10 pmol ET-1. iganidipine endothelin-1 Oryctolagus cuniculus
7 CONCLUSIONS: Iganidipine eyedrops may be useful for the treatment of ischemic retinal and optic nerve disorders related to abnormal ET-1 production for the maintenance of visual function. iganidipine endothelin-1 Oryctolagus cuniculus