ORIGINAL ARTICLEPharmacognosy MagazineVol. 12 | Issue 45s | 2016 | pp. S63–S70Open access
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- 1 Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal University, Manipal, Karnataka, India.
Published in Pharmacognosy Magazine
Correspondence: Krishnadas Nandakumar
Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal University, Manipal, Karnataka, India.
Email: mailnandakumar77@gmail.com
Copyright: © 2016 Manuscript Technomedia. This is an open access article.
- Published:
- Jan 1, 2016
How to cite
Ramalingayya, G. V., Nampoothiri, M., Nayak, P. G., Kishore, A., Shenoy, R. R., Rao, C. M., & Nandakumar, K. (2016). Pharmacognosy Magazine, 12(45s), S63–S70. https://doi.org/10.4103/0973-1296.176104
Abstract
Background: Cognitive decline or dementia is a debilitating problem of neurological disorders such as Alzheimer’s and Parkinson’s disease, including special conditions like chemobrain. Dietary flavonoids proved to be efficacious in delaying the incidence of neurodegenerative diseases. Two such flavonoids, naringin (NAR) and rutin (RUT) were reported to have neuroprotective potential with beneficial effects on spatial and emotional memories in particular. However, the efficacy of these flavonoids is poorly understood on episodic memory, which comprises an important form of autobiographical memory. Objective: This study objective is to evaluate NAR and RUT to reverse time‑delay‑induced long‑term and scopolamine‑induced short‑term episodic memory deficits in Wistar rats. Materials and Methods: We have evaluated both short‑term and long‑term episodic memory forms using novel object recognition task. Open field paradigm was used to assess locomotor activity for any confounding influence on memory assessment. Donepezil was used as positive control and was effective in both models at 1 mg/kg, i.p. Results: Animals treated with NAR and RUT at 50 and 100 mg/kg, p.o. spent significantly more time exploring novel object compared to familiar one, whereas control animals spent almost equal time with both objects in choice trial. NAR and RUT dose‑dependently increased recognition and discriminative indices in time‑induced long‑term as well as scopolamine‑induced short‑term episodic memory deficit models without interfering with the locomotor activity. Conclusion: We conclude that, NAR and RUT averted both short‑ and long‑term episodic memory deficits in Wistar rats, which may be potential interventions for neurodegenerative diseases as well as chemobrain condition.
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Article metadata
| Title | |
|---|---|
| Authors | Grandhi Venkata Ramalingayya; Madhavan Nampoothiri; Pawan G. Nayak; Anoop Kishore; Rekha R. Shenoy; Chamallamudi Mallikarjuna Rao; Krishnadas Nandakumar |
| Affiliations | Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal University, Manipal, Karnataka, India. |
| Corresponding author | mailnandakumar77@gmail.com |
| Journal | Pharmacognosy Magazine |
| Volume / Issue | Vol. 12, Issue 45s (2016) |
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- S1 Identification and Quantification of the Major Constituents in Egyptian Carob Extract by Liquid Chromatography–Electrospray Ionization‑Tandem Mass Spectrometrypp. S1–S6
- S7 Alteration in Memory and Electroencephalogram Waves with Sub‑acute Noise Stress in Albino Rats and Safeguarded by Scoparia dulcispp. S7–S13
- Steroidal Saponin Diosgenin from Dioscorea bulbifera Protects Cardiac Cells from Hypoxia-reoxygenation Injury Through Modulation of Pro-survival and Pro-death Moleculespp. S14–S20
- S21 Molecular Docking Analysis of Selected Clinacanthus nutans Constituents as Xanthine Oxidase, Nitric Oxide Synthase, Human Neutrophil Elastase, Matrix Metalloproteinase 2, Matrix Metalloproteinase 9 and Squalene Synthase Inhibitorspp. S21–SS6
- Potential Antidepressant Constituents of Nigella sativa Seedspp. S27–S31
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