抑制AhR通过保护神经肌肉结节来改善皮层骨和骨肌肉功能
Kanglun Yu1, Sagar Vyavahare2, Dima Alhamad1
1Department of Cellular Biology and Anatomy, Medical College of Georgia.
JCI insight
|July 15, 2025
概括
亚利碳化合物受体 (AhR) 的药理抑制剂在老年小鼠中保持了握力和骨质. 这些发现表明AhR抗可能是对抗与年龄相关的肌肉骨衰退的可行策略.
科学领域:
- 衰老的研究研究.
- 药理学 药理学是指药理学的学科.
- 分子生物学分子生物学
背景情况:
- 基碳化合物受体 (AhR) 参与调解金氨酸的促进脆弱性的作用,金氨酸是一种随着年龄增长的代谢物.
- 与年龄相关的肌肉骨健康状况下降是小鼠和人类的重大问题.
研究的目的:
- 调查药理上抑制AhR是否可以预防或逆转老年小鼠的肌肉骨衰退.
- 在老化小鼠模型中评估两种AhR抑制剂BAY2416964和CH-223191的疗效.
主要方法:
- 老龄化雌性小鼠 (18个月) 每天接受BAY2416964 (30毫克/公斤) 或载体治疗,持续8周.
- 老龄化雄性和雌性小鼠 (16个月) 用CH-223191 (3.3毫克/公斤) 或载体每周三次进行治疗,持续12周.
- 评估握力强度,神经肌肉结合完整性,皮质骨质量和氧化应激. 进行了转录基因和蛋白质基因分析.
主要成果:
- 在老年小鼠中,BAY2416964治疗保留了握力和改善了神经肌肉结合的完整性.
- 与车辆对照相比,BAY2416964和CH-223191治疗都增加了皮质骨质量.
- CH-223191对骨肌有有益影响,包括减少氧化应激.
- 分子分析支持BAY2416964对神经肌肉结合功能的积极影响.
结论:
- 酸受体 (AhR) 是一个潜在的治疗点,可以缓解与年龄相关的肌肉骨衰退.
- 药理上抑制AhR显示改善肌肉强度,神经肌肉结合完整性和老年人骨健康的承诺.
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