Original Articles: 2014 Vol: 6 Issue: 7
Protective effect of Eclipta alba on haloperidol induced extrapyramidal movement disorders in albino rats
Abstract
Extrapyramidal movement disorders are major neurodegenerative disorders caused due to dopamine deficiency in
the basal ganglia. It may be caused due to oxidative stress producing free radicals that destroys dopamine
producing neurons. Catalepsy, Tardive dyskinesia etc are the symptoms of certain nervous disorders such as
Parkinson’s disease & epilepsy in animal models. Phytochemical analysis of Eclipta alba (Bhringaraj) shows that it
contains urosolic acid having antioxidant properties. The present study was undertaken to evaluate the possible
protective effect of Eclipta alba leaf extract (EALE) on oxidative stress & haloperidol induced extrapyramidal
symptoms. Male wistar albino rats (150-200gms) were used for the experiments. Catalepsy was induced with
haloperidol (1mg/kg IP) using block method & was measured by standard procedure of Zazpe etal 2006. Effect of
EALE in a dose of 100,200,400mg/kg on haloperidol induced catalepsy &vacuous chewing movements (VCM) were
measured and compared with the standard drug alpha tocopherol. The effect of EALE on oxidative stress was done
by estimating the catalase & glutathione activity. Analysis was done by suitable statistical methods. The cataleptic
score & VCM were significantly reduced with all the three doses of EALE. There was significant reduction of
catalase activity whereas increase in glutathione activity with EALE. The antioxidant properties of Eclipta alba
reduced the duration of catalepsy, number of VCM, decreased the elevated levels of lipid peroxidation in the
haloperidol treatment groups & elevated the cellular defense mechanism such as glutathione that proves its
anticataleptic activity.