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08.09.2022 | Original Paper

Humulus lupulus L. extract and its active constituent xanthohumol attenuate oxidative stress and nerve injury induced by iron overload via activating AKT/GSK3β and Nrf2/NQO1 pathways

verfasst von: Sun Xiao-Lei, Xia Tian-Shuang, Jiang Yi-Ping, Wang Na-Ni, Xu Ling-Chuan, Han Ting, Xin Hai-Liang

Erschienen in: Journal of Natural Medicines | Ausgabe 1/2023

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Abstract

Hops, the dried female clusters from Humulus lupulus L., have traditionally been used as folk medicines for treating insomnia, neuralgia, and menopausal disorders. However, its pharmacological action on iron overload induced nerve damage has not been investigated. This study aims to evaluate the protective effects of hops extract (HLE) and its active constituent xanthohumol (XAN) on nerve injury induced by iron overload in vivo and in vitro, and to explore its underlying mechanism. The results showed that HLE and XAN significantly improved the memory impairment of iron overload mice, mainly manifested as shortened latency time, increased crossing platform times and spontaneous alternation ratio, and increased the expression of related proteins. Additionally, HLE and XAN significantly increased superoxide dismutase (SOD) and glutathione peroxidase (GSH-PX) activities, and remarkably decreased malondialdehyde (MDA) level in hippocampus. Also, HLE and XAN apparently reduced reactive oxygen species (ROS) content of PC12 cells induced by iron dextran (ID), and improved the oxidative stress level. Moreover, HLE and XAN significantly upregulated the expression of nuclear factor E2-related factor (Nrf2), NAD(P)H quinone oxidoreductase (NQO1), heme oxygenase-1 (HO-1), SOD, phosphorylated AKT (p-AKT), and phosphorylated GSK3β (p-GSK3β) both in hippocampus and PC12 cells. These findings demonstrated the protective effect of HLE and XAN against iron-induced memory impairment, which is attributed to its antioxidant profile by activation of AKT/GSK3β and Nrf2/NQO1 pathways. Also, it was suggested that hops could be a potential candidate for iron overload-related neurological diseases treatment.
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Metadaten
Titel
Humulus lupulus L. extract and its active constituent xanthohumol attenuate oxidative stress and nerve injury induced by iron overload via activating AKT/GSK3β and Nrf2/NQO1 pathways
verfasst von
Sun Xiao-Lei
Xia Tian-Shuang
Jiang Yi-Ping
Wang Na-Ni
Xu Ling-Chuan
Han Ting
Xin Hai-Liang
Publikationsdatum
08.09.2022
Verlag
Springer Nature Singapore
Erschienen in
Journal of Natural Medicines / Ausgabe 1/2023
Print ISSN: 1340-3443
Elektronische ISSN: 1861-0293
DOI
https://doi.org/10.1007/s11418-022-01642-1