过渡性可塑性反应在缺氧-葡萄糖条件下受 histone deacetylase 抑制剂的调节
Ming-Chia Chu1, Wei-Chang Mao2, Han-Fang Wu3
1Department and Institute of Physiology, College of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan.
Pharmacological reports : PR
|September 11, 2023
概括
瓦尔酸 (VPA) 通过增强抑制性GABAergic系统和ERK酸化来预防缺血性中风. 这种神经保护作用减少了中风模型中的脑损伤和运动功能障碍.
科学领域:
- 神经科学是一个神经科学.
- 病理学 病理学 病理学
- 药理学 药理学是指药理学的学科.
背景情况:
- 缺血性中风涉及病态突触可塑性,包括缺血性长期强化 (iLTP),与N-甲基-D-酸盐受体 (NMDAR) 强化相关.
- 虽然刺激系统已经得到了充分的研究,但人们越来越认识到γ-aminobutyric acid (GABA) 活体系统在iLTP中的作用.
- 值酸 (VPA) 是一种基因素脱乙酶抑制剂,在保护抗缺血损伤方面表现有前途,但其对中风早期可塑性的影响尚不清楚.
研究的目的:
- 研究VPA在调节缺血性中风期间早期可塑性的作用和机制.
- 确定VPA是否可以减轻缺血对神经可塑性和脑损伤的病理影响.
主要方法:
- 在海马片中使用氧和葡萄糖剥夺 (OGD) 诱导iLTP的ex vivo诱导.
- 在小鼠中使用光血栓性缺血症 (PTI) 进行缺血性中风的体内建模.
- 细胞外记录以评估突触可塑性和VPA的影响.
主要成果:
- 通过增强GABAA受体活性和细胞外信号调节激酶 (ERK) 酸化,VPA治疗消除了OGD诱导的海马iLTP.
- 在体内,VPA给药降低了脑梗塞的体积,并改善了PTI小鼠的运动功能.
- 在PTI模型中,VPA通过上调GABAergic系统和ERK酸化,并降低矩阵金属蛋白酶水平来证明神经保护.
结论:
- 在体外 (in vitro),VPA可以防止OGD引起的病理性神经可塑性.
- 在体内,VPA可减轻PTI引起的脑损伤和运动缺陷.
- 保护机制包括拯救GABAergic缺乏和解决缺血的病理特征,包括调节ERK酸化.
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