Journal
PHARMACOLOGY BIOCHEMISTRY AND BEHAVIOR
Volume 122, Issue -, Pages 122-135Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.pbb.2014.03.022
Keywords
3-Nitropropionic acid; Acetylcholinesterase; Morris water maze; Mitochondrial enzyme complex; Oxidative stress; Tetrabenazine
Funding
- School of Pharmacy, Bharat Institute of Technology, Meerut, India
- Space age Research and Technical Foundation Charitable Trust (SPRFCT), Bharat Institute of Technology, Meerut, India
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Huntington's disease (HD), a devastating neurodegenerative disorder, is characterized by progressive motor dysfunction, emotional disturbances, dementia, weight loss, depression. Melatonin receptors are widely expressed in the central nervous system. Vanilloids are also valuable as pharmacological tools for investigating neurobiology. This study investigates the utility of agomelatine, a dual agonist of MT1 and MT2 melatonin receptor as well as vanillin, a selective agonist of TRPV1 (vanilloid receptor) in 3-nitropropionic acid (3-NPA) induced experimental HD in rats. Locomotor activity (Actophotometer), motor coordination (Rota rod) and learning-memory (Morris water maze) were assessed. Brain striatum oxidative stress (lipid peroxidation-MDA, glutathione-GSH, superoxide dismutase-SOD and catalase-CAT), nitrosative stress (nitrite/nitrate) and mitochondrial enzyme complexes (I, H and IV) were also assessed. 3-NPA has induced weight loss, impaired locomotion, motor coordination as well as learning and memory. It has induced brain striatum oxidative as well as nitrosative stress, cholinergic dysfunction and impaired mitochondrial enzyme complexes (I, H and IV). Tetrabenazine (TBZ) was used as positive control. Treatment with agomelatine and vanillin and TBZ has significantly attenuated 3-NPA induced weight loss, impaired locomotion, motor coordination and learning-memory as well as biochemical impairments. Thus, agomelatine and vanillin exhibit protective effects against 3-NPA induced HD. It may be concluded that agomelatine and vanillin may provide benefits in HD. (C) 2014 Elsevier Inc. All rights reserved.
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