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Bionic Tiger-Bone Powder Improves Bone Microstructure and Bone Biomechanical Strength of Ovariectomized Rats
Shanwu Ren1, Guangjun Jiao1, Lu Zhang1
1Department of Orthopedics, Qilu Hospital of Shandong University and Spine and Spinal Cord Disease Research Center, Shandong University, Jinan, Shandong, China.
Orthopaedic Surgery
|April 5, 2021
Summary
Bionic tiger-bone powder effectively treats osteoporosis in ovariectomized rats by enhancing bone formation and improving microstructure. It activates key bone growth pathways and suppresses bone resorption, offering a potential therapeutic agent for bone loss.
Area of Science:
- Biomedical Science
- Pharmacology
- Orthopedics
Background:
- Osteoporosis is a debilitating bone disease characterized by low bone mass and microarchitectural deterioration.
- Ovariectomy-induced osteoporosis in rats is a widely used animal model to study bone loss and evaluate potential treatments.
- Bionic tiger-bone powder is explored for its potential therapeutic effects on bone health.
Purpose of the Study:
- To evaluate the efficacy of bionic tiger-bone powder in treating osteoporosis in a rat model.
- To elucidate the underlying molecular mechanisms by which bionic tiger-bone powder exerts its effects on bone metabolism.
Main Methods:
- Establishment of an osteoporosis model in 120 female Wistar rats through ovariectomy.
- Administration of bionic tiger-bone powder (TB) and vitamin D (TB+VD) to treatment groups.
- Analysis of bone microstructure (MicroCT), biomechanical strength (three-point bending test), serum bone markers (ELISA), collagen content, and key signaling pathway proteins (immunoblotting).
Main Results:
- Bionic tiger-bone powder significantly increased serum P1NP (bone formation marker) and decreased CTX (bone resorption marker) compared to the ovariectomized group.
- Improved bone collagen structure and content were observed in TB and TB+VD groups.
- Activation of BMP2/SMAD/RUNX2 pathway and downregulation of OPG/RANK/RANKL pathway were noted, alongside enhanced bone microstructure and biomechanical strength.
Conclusions:
- Bionic tiger-bone powder demonstrates significant therapeutic effects on osteoporosis.
- It promotes osteogenesis via the BMP2/SMAD/RUNX2 pathway and inhibits osteoclastogenesis via the OPG/RANK/RANKL pathway.
- The powder improves bone collagen content, microstructure, and biomechanical strength, indicating its potential as a treatment for osteoporosis.
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