血清素再吸收抑制剂改善肌肉干细胞功能和肌肉再生在雄性小鼠
Mylène Fefeu1,2,3, Michael Blatzer2, Anita Kneppers4
1GHU Paris Psychiatrie & Neurosciences, site Sainte Anne, Service Hospitalo-Universitaire de psychiatrie, Paris, France.
Nature communications
|July 31, 2024
概括
常见的抗抑郁药Fluoxetine通过增加肌肉干细胞和血管生长来促进骨肌肉再生. 这些好处取决于周围的血清信号传递,特别是通过5-HT1B受体.
科学领域:
- 神经科学是一个神经科学.
- 再生医学是一种再生医学.
- 肌肉生理学 肌肉生理学
背景情况:
- 选择性血清素再吸收抑制剂 (SSRI),如素,主要用于治疗情绪障碍.
- 它们的已知机制包括增加细胞外血,促进神经发生,增强大脑血管化.
- 对于SSRI影响外围组织再生的潜力仍然在很大程度上未被探索.
研究的目的:
- 为了研究fluoxetine对骨肌肉的外周再生作用.
- 确定外周血清素和特定血清素受体在素中介肌肉再生中的作用.
主要方法:
- 对雄性小鼠长期使用素.
- 评估肌肉干细胞种群和肌肉血管生成.
- 评估骨肌肉功能和在诱导损伤后的再生.
- 使用基因改造以缺乏外周血清素或具有失活的5-HT1B受体的小鼠的实验.
主要成果:
- 素显著增加了小鼠的肌肉干细胞数量和肌肉血管生成.
- 在急性和重复伤害后,观察到加强骨肌肉功能和改善再生.
- 在再生肌肉组织中注意到纤维化和炎症的减少.
- 在缺乏外周血清素或具有失活的5-HT1B受体的小鼠中,素对肌肉再生的有益作用被废除了.
结论:
- 西在骨肌肉中表现出显著的再生特性,超出其中枢神经系统效应范围.
- 通过5-HT1B受体作用的外周血清素对于调解这些肌肉再生效益至关重要.
- 这项研究凸显了血清素在促进骨肌肉修复和功能方面的新作用.
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