c-fos expression as a model for studying the action of hexachlorocyclohexane isomers in the CNS
M Vendrell1, J M Tusell, J Serratosa
1Departament de Farmacologia i Toxicologia, CID-CSIC, Barcelona, Spain.
Abstract:
The induction of protooncogene c-fos in the CNS after administration of several convulsants has been studied. The organochlorine insecticide gamma-hexachlorocyclohexane (gamma-HCH, lindane) has been shown to induce c-fos expression in different brain areas. Pentylenetetrazole and picrotoxin, a known gamma-aminobutyric acid-receptor antagonist, have also been considered. The administration of two nonconvulsant isomers of gamma-HCH, alpha-HCH, and delta-HCH, before the mentioned toxicants, affects the protooncogene expression in different ways. The differential pattern of expression displayed by c-fos after these treatments suggests the presence of diverse mechanisms of action for the compounds studied.
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