CC BY-NC-ND 4.0 · Journal of Health and Allied Sciences NU 2021; 11(03): 158-163
DOI: 10.1055/s-0041-1726690
Original Article

Establishing the Rotenone-Induced Parkinson's Disease Animal Model in Wistar Albino Rats

Gangadhara Swamy
1   Department of Anatomy, Subbiah Institute of Medical Sciences and Research Center, Shivamogga, Karnataka, India
,
Rajendra Holla
2   Department of Pharmacology, K.S. Hegde Medical Academy, Mangalore, Karnataka, India
,
Suresh R. Rao
1   Department of Anatomy, Subbiah Institute of Medical Sciences and Research Center, Shivamogga, Karnataka, India
› Author Affiliations

Abstract

Objective The aim of this study was to establish the safe and effective dose of rotenone-induced Parkinson’s disease (PD) in Wistar albino rat.

Materials and Methods Male Wistar albino rats (n = 6) aged between 9 and 11 weeks, weight 200 to 250 g, were selected for the study. Rats were divided into four groups namely, A, B, C, and D; Group A served as control received only isotonic saline, groups B, C, and D were administered with rotenone 2, 2.5, and 3 mg/kg body weight (BW), respectively, with a specialized vehicle through intraperitoneal (IP) route once daily. During the procedure, they were observed for the development of the PD signs such as stooped posture, postural instability, akinesia, bradykinesia, and muscular rigidity. BW and behavioral pattern were recorded before the rotenone introduction and also after the onset of PD signs in them. They were sacrificed when the PD phenotype became debilitating and followed by neurochemical assay for dopamine and antioxidants; histological assay for TH-neuronal density and Lewy bodies were performed in the substantia nigra pars compacta (SNpc) of midbrain.

Results Group C and D animals were developed with the PD signs by the 9th day and also there was a significant decrease in the BW noticed in them. Additionally, histological studies revealed the decrease in neuronal density and the presence of Lewy bodies in the dopamine neurons of the SNpc. However, it was also noticed that the group D had shown more mortality rate when compared with the Group C.

Conclusion Rotenone with 2.5 mg/kg BW IP was an ideal dose to develop PD signs in Wistar albino rats model that is a highly reproducible and may offer an excellent tool to establish the new neuroprotective treatment strategies.



Publication History

Article published online:
18 May 2021

© 2021. Nitte (Deemed to be University). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/).

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