Mishra RK, Baker MT. Seizure prevention by the naturally occurring phenols, carvacrol and thymol in a partial seizure-psychomotor model.
Bioorg Med Chem Lett 2015;
24:5446-9. [PMID:
25454269 DOI:
10.1016/j.bmcl.2014.10.028]
[Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Revised: 10/03/2014] [Accepted: 10/08/2014] [Indexed: 11/25/2022]
Abstract
The natural compounds carvacrol and thymol completely prevented seizures in the 6 Hz, 32 mA partial seizure model. Carvacrol and thymol, both exhibited an ED₅₀ = 35.8 mg/kg, ip and yielded protective indices of 5.3 and 3.4, respectively. At 44 mA current intensity, carvacrol and thymol exhibited ED₅₀s of 88.82 mg/kg (PI = 2.15) and 73.0 mg/kg (PI = 1.65), respectively. Thymol, but not carvacrol showed partial inhibitory activity in the maximal electroshock (MES), sc Metrazol (scMET) and Corneal-kindled models. These results suggest that carvacrol and thymol are more efficacious anticonvulsants than suggested by their lower efficacies in the conventional MES and scMET tests.
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