混合质培养中高葡萄糖诱导的细胞异常得到维持,尽管葡萄糖恢复到正常水平
Brandon Isai Herrera Solis1,2, Frida Guerrero-Padilla1,2, Elvia Mera Jiménez1
1Laboratorio de Cultivo Celular, Neurofarmacología y Conducta, Sección de Estudios de Posgrado e Investigación, Escuela Superior de Medicina, Instituto Politécnico Nacional, Ciudad de México 11340, Mexico.
Brain sciences
|September 27, 2025
概括
高葡萄糖暴露会对质细胞造成持久损伤,即使在恢复正常葡萄糖水平后也是如此. 这种代谢记忆效应涉及氧化应激和炎症的增加,长期影响细胞功能.
科学领域:
- 神经科学是一个神经科学.
- 细胞生物学 细胞生物学
- 代谢研究研究 代谢研究
背景情况:
- 代谢记忆描述了短期葡萄糖代谢障碍造成的长期细胞损伤.
- 过高血糖会引发反应性氧物种 (ROS),炎症和先进的糖化终产物 (AGEs).
- 这种在血管细胞中已知的现象可能会影响大脑中的质细胞.
研究的目的:
- 为了研究高葡萄糖 (HG) 诱导的变化在初级混合质细胞 (MGCs) 的持久性.
- 评估MGC在恢复正常葡萄糖 (NG) 条件后是否保持有害影响.
主要方法:
- 来自Wistar大鼠的初级MGC在正常葡萄糖 (NG),高葡萄糖 (HG) 或连续的HG-NG条件下培养了21天.
- 评估了细胞增殖,细胞亡,ROS产生,脂质过氧化,线粒体活性,TNF-α,IL-6和AGE.
主要成果:
- HG和HG-NG MGCs显示减少了增殖,但没有增加了亡.
- 无论是HG和HG-NG条件都提高了ROS,并降低了线粒体活动.
- 在HG和HG-NG组中,TNF-α和AGE都增加;IL-6仅在HG-NG中下降.
结论:
- 高水平的葡萄糖暴露会在MGC中产生持续的有害影响.
- 质细胞表现出代谢记忆,即使在葡萄糖正常化后也保留损伤.
- 这些发现突出了高血糖的潜在长期神经系统后果.
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