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Erschienen in: Journal of Bone and Mineral Metabolism 1/2020

06.09.2019 | Original Article

MnTBAP inhibits bone loss in ovariectomized rats by reducing mitochondrial oxidative stress in osteoblasts

verfasst von: Xiangchang Cao, Deqing Luo, Teng Li, Zunxian Huang, Weitao Zou, Lei Wang, Kejian Lian, Dasheng Lin

Erschienen in: Journal of Bone and Mineral Metabolism | Ausgabe 1/2020

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Abstract

The development of postmenopausal osteoporosis is thought to be closely related to oxidative stress. Mn(III)tetrakis (4-benzoic acid) porphyrin (MnTBAP), a novel superoxide dismutase (SOD) mimetic, could protect osteoblasts from cytotoxicity and dysfunction caused by oxidative stress. However, it is still unclear whether MnTBAP has effect on the development of postmenopausal osteoporosis. Here, we demonstrated that MnTBAP can inhibit bone mass loss and bone microarchitecture alteration, and increase the number of osteoblasts while reducing osteoclasts number, as well as improve the BMP-2 expression level in ovariectomized rat model. Additionally, MnTBAP can also prevent oxidative stress status up-regulation induced by ovariotomy and hydrogen peroxide (H2O2). Furthermore, MnTBAP reduced the effect of oxidative stress on osteoblasts differentiation and increased BMP-2 expression levels with a dose-dependent manner, via reducing the levels of mitochondrial oxidative stress in osteoblasts. Taken together, our findings provide new insights that MnTBAP inhibits bone loss in ovariectomized rats by reducing mitochondrial oxidative stress in osteoblasts, and maybe a potential drug in postmenopausal osteoporosis therapy.
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Metadaten
Titel
MnTBAP inhibits bone loss in ovariectomized rats by reducing mitochondrial oxidative stress in osteoblasts
verfasst von
Xiangchang Cao
Deqing Luo
Teng Li
Zunxian Huang
Weitao Zou
Lei Wang
Kejian Lian
Dasheng Lin
Publikationsdatum
06.09.2019
Verlag
Springer Japan
Erschienen in
Journal of Bone and Mineral Metabolism / Ausgabe 1/2020
Print ISSN: 0914-8779
Elektronische ISSN: 1435-5604
DOI
https://doi.org/10.1007/s00774-019-01038-4

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