Protective effects of jujube seed extract against oxidative stress in HT22 cells and its sleep-promoting action through GABAergic receptors
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Updated: Jan 15, 2026

Meta-Analysis of the Effectiveness and Safety of Shugan Jieyu Capsules for the Treatment of Insomnia
Published on: February 17, 2023
Seok Hyun Chung1,2, Hyeongyeong Kim1,2, Singeun Kim3
1Department of Integrated Biomedical and Life Science, Graduate School, Korea University, Seoul 02841, Republic of Korea.
Abstract:
Jujube seed extract (JSE), rich in polyphenols and flavonoids, exhibits neuroprotective and sleep-enhancing properties. In vitro, JSE protected HT22 cells against oxidative stress by activating the Nrf2/HO-1 pathway and upregulating antioxidant enzymes. In vivo, JSE increased non-REM sleep and delta wave activity in pentobarbital- and caffeine-induced sleep models. Spinosin contributed to these effects. Long-term JSE administration upregulated GABAA, GABAB, and 5-HT1A receptors in brain tissue. These findings suggest that JSE offers dual benefits in mitigating oxidative stress and promoting sleep through antioxidant defense and neurotransmitter modulation, supporting its potential as a natural therapeutic agent.
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