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Rg3-enriched ginseng extract ameliorates scopolamine-induced learning deficits in mice
Jiyoung Kim1,2,3, Jaesung Shim1, Siyoung Lee1
1WCU Biomodulation Major, Department of Agricultural Biotechnology, Seoul National University, Seoul, 151-742, Republic of Korea.
BMC Complementary and Alternative Medicine
|February 19, 2016
Summary
Ginsenoside Rg3-enriched ginseng extract (Rg3GE) prevents memory loss caused by scopolamine in mice. Rg3GE inhibits acetylcholinesterase and nuclear factor-κB (NF-κB) signaling in the hippocampus.
Area of Science:
- Neuroscience
- Pharmacology
- Traditional Medicine
Background:
- Ginseng (Panax ginseng C.A. Meyer) is a traditional herb with therapeutic uses.
- Ginsenosides are key pharmacologically active compounds in ginseng.
- This study focuses on ginsenoside Rg3-enriched ginseng extract (Rg3GE).
Purpose of the Study:
- To investigate the efficacy of Rg3GE in mitigating scopolamine-induced memory impairment in mice.
- To explore the molecular mechanisms underlying Rg3GE's effects on memory.
- To assess Rg3GE's impact on key biochemical markers in the hippocampus.
Main Methods:
- C57BL/6 mice were administered Rg3GE (50 and 100 mg/kg) orally for 14 days.
- Memory impairment was induced using scopolamine (1 mg/kg, intraperitoneal injection) from days 9-14.
- The Morris water maze test evaluated spatial memory; hippocampal acetylcholinesterase activity and NF-κB signaling were analyzed.
Main Results:
- Scopolamine administration alone significantly impaired spatial memory acquisition and retention.
- Rg3GE administration prevented scopolamine-induced deficits in spatial memory acquisition.
- Rg3GE treatment inhibited scopolamine-induced increases in acetylcholinesterase activity and NF-κB pathway activation in the hippocampus.
Conclusions:
- Rg3GE demonstrates potential in preventing and stabilizing memory deficits induced by scopolamine.
- The protective effects of Rg3GE are associated with the inhibition of hippocampal acetylcholinesterase activity.
- Rg3GE may exert its neuroprotective effects by modulating the NF-κB signaling pathway.
