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在患有慢性阻塞性肺病的卵巢完好和卵巢切除的老鼠中,骨损失和骨髓脂肪增加
Jingzheng Fan1, Yuyan Jiang2, Lechang Yu1
1Department of Geriatrics , Tianjin Medical University General Hospital, Tianjin Geriatrics Institute , 154 Anshan Rd, Tianjin, 300052, China.
Journal of endocrinological investigation
|August 14, 2025
概括
长期暴露在香烟烟雾 (CS) 中,通过增加骨髓脂肪和恶化骨,使老鼠的骨质疏松症恶化. 这突显了骨髓脂肪是慢性阻塞性肺病 (COPD) 相关骨损失的关键因素.
科学领域:
- 生物医学科学 生物医学科学
- 肺部医学 肺部医学
- 骨生物学 骨生物学 骨生物学
背景情况:
- 骨质疏松症是慢性阻塞性肺病 (COPD) 的一个显著的并发症.
- 骨髓脂肪在COPD引起的骨损失中的作用尚不清楚.
- 了解这种关系对于管理COPD患者至关重要.
研究的目的:
- 为了研究长期暴露于香烟烟雾 (CS) 对骨和骨髓脂肪的影响.
- 在卵巢完整和卵巢切除 (OVX) 的老鼠模型中检查这些影响.
- 为了澄清COPD对骨完整性和骨髓脂肪性的影响.
主要方法:
- 使用了32只雌性Wistar大鼠,分为OVX和Sham组.
- 暴露于CS或室内空气 (RA) 的老鼠5个月.
- 分析了骨髓脂肪分数 (FF),骨矿物质密度 (BMD),肺功能,肺形态,脂肪细胞特征,骨微型结构,基因表达 (基因/骨基因) 和血清骨生物标志物.
主要成果:
- 在完整和OVX大鼠中,CS暴露显著增加了骨髓脂肪和骨质恶化.
- 在CS诱导的老鼠中,骨髓FF增加,脂肪细胞增加,脂基因表达升高,骨微型结构恶化,骨质量减少,骨循环标志物发生变化.
- 结合CS暴露和OVX导致比单独的CS更严重的脂肪扩张和骨损失.
结论:
- 骨髓脂肪在这种COPD大鼠模型中与骨质疏松症的发展密切相关.
- 这些发现表明对骨质母细胞和骨质母细胞活动的影响.
- 准骨髓脂肪细胞可能是治疗COPD患者骨质疏松症的策略.
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