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Effects of Green Lettuce Leaf Extract on Sleep Disturbance Control in Oxidative Stress-Induced Invertebrate and Vertebrate Models

Authors
Jo, KyungaeKim, SingeunAhn, YejinSuh, Hyung Joo
Issue Date
6월-2021
Publisher
MDPI
Keywords
green lettuce leaf extract; sleep; oxidative stress; GABA receptor; Drosophila melanogaster; rodents
Citation
ANTIOXIDANTS, v.10, no.6
Indexed
SCIE
SCOPUS
Journal Title
ANTIOXIDANTS
Volume
10
Number
6
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/127955
DOI
10.3390/antiox10060970
ISSN
2076-3921
Abstract
This study investigated the effect of ethanol-extracted green lettuce leaf (GLE) on sleep behavior in physical stress-induced invertebrate and vertebrate models. In Drosophila melanogaster, the group that experienced vibration stress showed decreased sleep time compared to the no-vibration-stress control group, but the GLE treatment group recovered this lost sleep time. The GLE group also recovered the gene expression of downregulated superoxide dismutase induced by vibration stress conditions. According to electroencephalography analysis of rats, non-rapid eye movement (NREM) sleep significantly decreased with a decrease in sleep time for the group in which immobilization stress was induced. In the GLE group (120 mg/kg), the change in sleep pattern caused by stress was restored, and NREM sleep increased by 68.8%, improving overall sleep quality. In addition, GLE upregulated the expression levels of oxidation-related factors and gamma-aminobutyric acid (GABA(A)) receptor. Quercetin-3-glucuronide (Q3G) was evaluated as a sleep-promoting active substance contained in GLE using the pentobarbital-induced sleep test and showed the effect of prolonged sleep time. Q3G inhibited [H-3]-flumazenil binding in a concentration-dependent manner with GLE. Taken together, the results indicate that GLE effectively binds to the GABA(A) receptor to promote sleep, demonstrating the potential of Q3G as an active substance.
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Suh, Hyung Joo
보건과학대학 (바이오시스템의과학부)
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