Article ; Online: Si-Zhi Wan regulates osteoclast autophagy in osteoporosis through the AMPK signaling pathway to attenuate osteoclastogenesis.
The Journal of pharmacy and pharmacology
2024 Volume 76, Issue 3, Page(s) 236–244
Abstract: Objectives: The mechanisms underlying the therapeutic effects of Si-Zhi Wan (SZW ...
Abstract | Objectives: The mechanisms underlying the therapeutic effects of Si-Zhi Wan (SZW), a traditional Chinese medicine used to treat osteoporosis (OP), remain unknown. This study investigated the therapeutic effects of SZW on mice that underwent ovariectomy (OVX) and underlying mechanisms thereof. Methods: We established an in vivo model of OP by performing OVX in mice. Microcomputed tomography (Micro-CT) was used to assess changes in bone characteristics of mice following SZW administration for 4 weeks. H&E staining revealed alterations in bone tissues of mice. Osteoclastogenesis in mouse bone tissue was observed using tartrate-resistant acid phosphatase staining and western blotting. Furthermore, we examined the impact of SZW on osteoclastogenesis in vitro using receptor activator of nuclear factor kappa-B ligand (RANKL). Finally, we explored the regulatory effects of SZW on osteoclast autophagy and the AMPK pathway. Key findings: The results demonstrated that high-dose SZW reversed changes in bone density parameters caused by OVX, including bone volume (BV), BV/total volume, trabecular number, and trabecular spacing (P = 0.0007, 0.0035, 0.0114, and 0.0182, respectively), and stimulated the formation of bone trabeculae in mice (P < 0.0001). Furthermore, SZW suppressed osteoclast formation in mice with OVX and inhibited osteoclast formation induced by RANKL. Mechanistically, SZW inhibited osteoclast precursor cell autophagy through the AMPK pathway. Conclusions: SZW effectively inhibited the autophagy of osteoclast precursors by regulating the AMPK pathway, thereby exerting anti-osteoclastogenic effects and serving as an alternative therapy for OP. |
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MeSH term(s) | Female ; Mice ; Animals ; Humans ; Osteoclasts/metabolism ; Osteogenesis ; AMP-Activated Protein Kinases/metabolism ; X-Ray Microtomography ; Osteoporosis/drug therapy ; Osteoporosis/metabolism ; Signal Transduction ; Autophagy ; RANK Ligand/metabolism ; RANK Ligand/pharmacology ; RANK Ligand/therapeutic use ; Ovariectomy ; Cell Differentiation |
Chemical Substances | AMP-Activated Protein Kinases (EC 2.7.11.31) ; RANK Ligand |
Language | English |
Publishing date | 2024-01-05 |
Publishing country | England |
Document type | Journal Article |
ZDB-ID | 3107-0 |
ISSN | 2042-7158 ; 0022-3573 ; 0373-1022 |
ISSN (online) | 2042-7158 |
ISSN | 0022-3573 ; 0373-1022 |
DOI | 10.1093/jpp/rgad126 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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