Abstract:
:The anticonvulsant effect of the dihydropyridine calcium channel blocker, nimodipine (NMD) was evaluated against electroshock-induced seizures in mice. At 1 h postdosing, NMD elicited a dose-dependent reduction in the occurrence of tonic hindlimb extension (THE) after maximal electroshock (MES). The calculated ED50 for NMD was 87 mg/kg. A single dose of NMD (75 mg/kg) produced a significant (p < 0.05) reduction in occurrence of THE for < or = 12 h postdosing. NMD was detectable for < or = 6 h, and plasma and brain drug concentrations correlated well (r = 0.677, p < 0.01) for that period. At 1 h postdose, a single dose of NMD (75 mg/kg) produced a 40% increase (p < 0.001) in the threshold for tonic seizures as determined by minimal electroshock (Min-ES). NMD is an effective anticonvulsant against experimental seizures induced by electroshock. The pharmacodynamic effect of NMD appears to extend beyond the time anticipated from the pharmacokinetic profile.
journal_name
Epilepsiajournal_title
Epilepsiaauthors
Sills GJ,Carswell A,Brodie MJdoi
10.1111/j.1528-1157.1994.tb02457.xsubject
Has Abstractpub_date
1994-03-01 00:00:00pages
437-42issue
2eissn
0013-9580issn
1528-1167journal_volume
35pub_type
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