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Updated: May 3, 2026
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Preparation of Oligomeric β-amyloid1-42 and Induction of Synaptic Plasticity Impairment on Hippocampal Slices
Published on: July 14, 2010
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Amyloid beta peptide is elevated in osteoporotic bone tissues and enhances osteoclast function
Shangfu Li1, Bin Liu1, Liangming Zhang1
1Department of Spine Surgery, the Third Affiliated Hospital of Sun Yat-sen University, TianHe Road 600, TianHe District, Guangzhou Guangdong, 510630, PR China.
Bone
|January 30, 2014
Summary
Amyloid beta (Aβ) deposition is elevated in osteoporosis and negatively correlates with bone mineral density. Aβ enhances osteoclast activity, suggesting a role in osteoporosis development.
Area of Science:
- Biochemistry
- Osteology
- Neuroscience
Background:
- Alzheimer's disease (AD) patients exhibit increased hip fracture risk.
- The role of amyloid beta peptide (Aβ) deposition in osteoporosis pathogenesis is unclear.
Purpose of the Study:
- Investigate Aβ deposition in human osteoporosis.
- Determine the relationship between Aβ and osteoporosis.
- Examine Aβ's effect on osteoclasts.
Main Methods:
- Assessed Aβ42 and amyloid precursor protein (APP) levels in human vertebral bone biopsies and femoral necks.
- Utilized immunohistochemistry, RT-PCR, and Western blotting in human samples and an ovariectomized rat model.
- Co-cultured Aβ42 with osteoclasts to evaluate effects on differentiation and activation.
Main Results:
- Elevated Aβ42 and APP mRNA and protein levels were observed in osteoporotic bone from humans and rats.
- Aβ42/APP levels negatively correlated with bone mineral density in patients.
- Aβ42 significantly enhanced osteoclast differentiation and activation.
Conclusions:
- Amyloid beta is relevant to human osteoporosis.
- Aβ may play a significant role in the pathogenesis of osteoporosis.
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