Shamsher Singh1,2, Puneet Kumar3. 1. Department of Pharmacology, I.S.F College of Pharmacy, Ferozepur Road, Ghal Kalan, Moga, 142001, Punjab, India. 2. Research Scholar, I.K. Gujral Punjab Technical University, Jalandhar, India. 3. Department of Pharmacology, I.S.F College of Pharmacy, Ferozepur Road, Ghal Kalan, Moga, 142001, Punjab, India. punnubansal79@gmail.com.
Abstract
AIM AND OBJECTIVE: 6-hydroxy dopamine (6-OHDA) is a neurotoxin which on intranigral administration produces severe nigrostriatal damage with motor and cognitive deficit in animals. Curcumin (CMN) in combination with bioenhancer piperine (PP) in 6-hydroxydopamine-induced Parkinsonian rats was used to investigate the antioxidant, neuromodulatory and neuroprotective mechanisms. MATERIALS AND METHODS: Hemi-Parkinson's rat model was developed with intranigral infusion of 6-OHDA (8 μg/2 μl, once, unilaterally), treatment with CMN (25 and 50 mg/kg) and combination of PP (2.5 mg/kg) with CMN (25 mg/kg) was given daily for 21 days starting from the 7th day after 6-OHDA infusion. The behavioral (locomotor, grip strength, and narrow beam walk) parameters were studied on weekly basis. On 22nd day, isolated brain preparations were subjected to biochemical (lipid peroxidation, glutathione, and nitrite), neuroinflammatory (IL-1β, IL-6, and TNF- α), and neurochemical (DA, NE, 5- HT, GABA, Glutamate, DOPAC, HVA, and 5-HIAA) analysis. RESULTS: Oral administration of CMN had significantly prevented behavioral, neuroinflammatory, and neurochemical changes and preserved the antioxidant potential of the nigrostriatum in rats treated with 6-OHDA. CONCLUSION: In the present study, PP and CMN had afforded a better neuroprotective effect compared to alone treatment on behavior, biochemical, neuroinflammatory, and neurochemical parameters in rats.
AIM AND OBJECTIVE:6-hydroxy dopamine (6-OHDA) is a neurotoxin which on intranigral administration produces severe nigrostriatal damage with motor and cognitive deficit in animals. Curcumin (CMN) in combination with bioenhancer piperine (PP) in 6-hydroxydopamine-induced Parkinsonianrats was used to investigate the antioxidant, neuromodulatory and neuroprotective mechanisms. MATERIALS AND METHODS:Hemi-Parkinson'srat model was developed with intranigral infusion of 6-OHDA (8 μg/2 μl, once, unilaterally), treatment with CMN (25 and 50 mg/kg) and combination of PP (2.5 mg/kg) with CMN (25 mg/kg) was given daily for 21 days starting from the 7th day after 6-OHDA infusion. The behavioral (locomotor, grip strength, and narrow beam walk) parameters were studied on weekly basis. On 22nd day, isolated brain preparations were subjected to biochemical (lipid peroxidation, glutathione, and nitrite), neuroinflammatory (IL-1β, IL-6, and TNF- α), and neurochemical (DA, NE, 5- HT, GABA, Glutamate, DOPAC, HVA, and 5-HIAA) analysis. RESULTS: Oral administration of CMN had significantly prevented behavioral, neuroinflammatory, and neurochemical changes and preserved the antioxidant potential of the nigrostriatum in rats treated with 6-OHDA. CONCLUSION: In the present study, PP and CMN had afforded a better neuroprotective effect compared to alone treatment on behavior, biochemical, neuroinflammatory, and neurochemical parameters in rats.
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