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Erschienen in: Journal of Bone and Mineral Metabolism 3/2022

01.02.2022 | Original Article

Hops extract and xanthohumol ameliorate bone loss induced by iron overload via activating Akt/GSK3β/Nrf2 pathway

verfasst von: Xiaolei Sun, Tianshuang Xia, Shiyao Zhang, Jiabao Zhang, Lingchuan Xu, Ting Han, Hailiang Xin

Erschienen in: Journal of Bone and Mineral Metabolism | Ausgabe 3/2022

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Abstract

Introduction

Osteoporosis is closely related to iron metabolism. This study aimed to investigate whether hops extract (HLE) and its active component xanthohumol (XAN) could ameliorate bone loss caused by iron overload, and explored its potential mechanism.

Materials and methods

Iron overload mice induced by iron dextran (ID) were used in vivo, and were treated with HLE and XAN for 3 months. Bone micro-structure and bone morphology parameters were determined by Micro-CT and TRAP staining. Bone metabolism markers and oxidation indexes in serum and bone tissue were evaluated. For in vitro experiment, bone formation indexes were determined. Moreover, the expression of key proteins in protein kinase B (Akt)/glycogen synthetase kinase 3β (GSK3β)/nuclear factor E2-related (Nrf2) pathway was evaluated by Western blotting.

Results

HLE and XAN effectively improved the bone micro-structure of the femur in mice, altered bone metabolism biomarkers, and regulated the expression of proteins related to bone metabolism. Additionally, they significantly promoted cell proliferation, runt-related gene 2 (Runx2) expression, and increased ALP activity in ID-induced osteoblasts. Moreover, HLE and XAN markedly inhibited the increase of oxidative stress caused by iron overload in vivo and in vitro. Further studies showed that they significantly up-regulated the expression of p-Akt, p-GSK3β, nuclear-Nrf2, NAD(P)H: quinone oxidoreductase 1 (NQO1), and heme oxygenase-1 (HO-1) in ID-induced osteoblasts.

Conclusion

These findings indicated hops and xanthohumol could ameliorate bone loss induced by iron overload via activating Akt/GSK3β/Nrf2 pathway, which brought up a novel sight for senile osteoporosis therapy.
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Metadaten
Titel
Hops extract and xanthohumol ameliorate bone loss induced by iron overload via activating Akt/GSK3β/Nrf2 pathway
verfasst von
Xiaolei Sun
Tianshuang Xia
Shiyao Zhang
Jiabao Zhang
Lingchuan Xu
Ting Han
Hailiang Xin
Publikationsdatum
01.02.2022
Verlag
Springer Nature Singapore
Erschienen in
Journal of Bone and Mineral Metabolism / Ausgabe 3/2022
Print ISSN: 0914-8779
Elektronische ISSN: 1435-5604
DOI
https://doi.org/10.1007/s00774-021-01295-2

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