Journal
NUTRITIONAL NEUROSCIENCE
Volume 25, Issue 1, Pages 100-109Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/1028415X.2020.1721645
Keywords
Huntington's disease; 3-nitropropioninc acid; piperine; behavioural impairments; neuroprotection
Categories
Funding
- Department of Science and Technology [DST/CSRI/2017/150, SR/PURSE Phase 2/39[C]]
- University Grants Commission [25-1/2014-15(BSR)/7-91-2007(BSR)]
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This study reveals the neuroprotective effect of piperine against Huntington disease-like symptoms in rats. The protective effects are demonstrated by attenuating behavioral impairments, reducing neuronal loss and astrocyte activation, and alleviating biochemical, immunohistochemical, and histological alterations.
Background: Piperine (PIP) is a powerful anti-oxidant and anti-inflammatory alkaloid which has been widely used in the treatment of various pathological conditions. However, few studies have clearly discussed the protective effects and potential mechanism of PIP in different neurological diseases. The aim of this study was to investigate the neuroprotective effect of PIP against 3-nitropropioninc acid (3-NP) induced neurobehavioral, biochemical and histopathological alterations in animals. Methods: Adult male Wistar rats were randomly divided into three groups. Group 1, the vehicle administered control group, received normal saline (p.o.). Group 2 received 3-NP (20 mg/kg.b.wt., i.p.) for 4 consecutive days. Group 3 received PIP (10 mg/kg.b.wt., p.o.) twice daily for a period of 4 days, 30 min before and 6 h after the 3-NP injection. Upon termination of treatment schedule, behavioral experiments were performed to access the behavioral outcomes. The brain striatal tissue was used for the estimation of monoamine oxidase activity and serotonin level. In addition, astrocytes activation was observed by GFAP immunostaining. Results: Our results showed that 3-NP induced behavioral impairments are attenuated by PIP co-treatment. Next, the extent of neuronal loss and astrocytes activation was reduced in the striatal brain region in PIP treated rats. Finally, it was observed that PIP alleviated the behavioral, biochemical, immunohistochemical and histological alterations. Conclusion: The results of the current study reveal the neuroprotective competency of PIP against Huntington disease like symptoms in rats.
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