Exp Neurobiol.  2013 Sep;22(3):214-223. 10.5607/en.2013.22.3.214.

Beneficial Effect of Vitamin E in Rotenone Induced Model of PD: Behavioural, Neurochemical and Biochemical Study

• Sharma N
• Nehru B

• KMID: 2165484
• DOI: http://doi.org/10.5607/en.2013.22.3.214

Abstract

Parkinson's disease (PD) a neurodegenerative disorder for which no preventive or long-term effective treatment strategies are available. Epidemiologic studies have failed to identify specific environmental, dietary or lifestyle risk factors for PD. However, oxidative stress in the SN is the most broadly accepted hypothesis for the etiopathology of PD. The Symptoms do not appear until there is a decline of striatal dopamine levels by 80% making it difficult to have early therapeutic interventions. Thus, the present experiment was designed to track down the sequential changes starting from the initiation of motor dysfunction and associated biochemical abnormality in rotenone based PD model. The study also evaluated the neuroprotective efficacy of vitamin E. Rats were treated with rotenone 2 mg/kg b.wt (s.c.) for 35 days. The level of dopamine decreased by 70~80% which was in turn reflected by marked deterioration in motor function such as (Total locomotor activity and catalepsy). Along with these the level of GSH and SOD declined significantly which was associated with elevated lipid peroxidation levels as much as by 60%.Vitamin E co-administration at a dose of 100 I.U/kg b.wt (i.m.) ameliorated rotenone induced changes in motor functions i.e Total locomotor activity and Catalepsy at the end of 5th week. Further, vitamin E supplementation significantly decreased lipid peroxidation and improved associated biochemical parameters i.e SOD and GSH level. Most interestingly the changes appeared as early as 3rd week suggesting that supplementation of vitamin E right at the beginning should be neuroprotective in PD.

Keyword

Parkinson's disease; substantia nigra; oxidative stress; pars compacta; rotenone; catalepsy

MeSH Terms

Animals
Catalepsy
Dopamine
Life Style
Lipid Peroxidation
Motor Activity
Neurodegenerative Diseases
Oxidative Stress
Parkinson Disease
Rats
Risk Factors
Rotenone
Substantia Nigra
Track and Field
Vitamin E
Vitamins
Dopamine
Rotenone
Vitamin E
Vitamins