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Erschienen in: Calcified Tissue International 4/2020

24.07.2020 | Review Article

Bone's Response to Mechanical Loading in Aging and Osteoporosis: Molecular Mechanisms

verfasst von: Valeria Carina, Elena Della Bella, Viviana Costa, Daniele Bellavia, Francesca Veronesi, Simona Cepollaro, Milena Fini, Gianluca Giavaresi

Erschienen in: Calcified Tissue International | Ausgabe 4/2020

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Abstract

Mechanotransduction is pivotal in the maintenance of homeostasis in different tissues and involves multiple cell signaling pathways. In bone, mechanical stimuli regulate the balance between bone formation and resorption; osteocytes play a central role in this regulation. Dysfunctions in mechanotransduction signaling or in osteocytes response lead to an imbalance in bone homeostasis. This alteration is very relevant in some conditions such as osteoporosis and aging. Both are characterized by increased bone weakness due to different causes, for example, the increase of osteocyte apoptosis that cause an alteration of fluid space, or the alteration of molecular pathways. There are intertwined yet very different mechanisms involved among the cell-intrinsic effects of aging on bone, the cell-intrinsic and tissue-level effects of estrogen/androgen withdrawal on bone, and the effects of reduced mechanical loading on bone, which are all involved to some degree in how aged bone fails to respond properly to stress/strain compared to younger bone. This review aims at clarifying how the cellular and molecular pathways regulated and induced in bone by mechanical stimulation are altered with aging and in osteoporosis, to highlight new possible targets for antiresorptive or anabolic bone therapeutic approaches.
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Metadaten
Titel
Bone's Response to Mechanical Loading in Aging and Osteoporosis: Molecular Mechanisms
verfasst von
Valeria Carina
Elena Della Bella
Viviana Costa
Daniele Bellavia
Francesca Veronesi
Simona Cepollaro
Milena Fini
Gianluca Giavaresi
Publikationsdatum
24.07.2020
Verlag
Springer US
Erschienen in
Calcified Tissue International / Ausgabe 4/2020
Print ISSN: 0171-967X
Elektronische ISSN: 1432-0827
DOI
https://doi.org/10.1007/s00223-020-00724-0

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