右美托咪定治疗外伤性脑损伤的小鼠模型研究。

Yasar Ozturk, Ismail Bozkurt, Orkhan Mammadkhanli, Yahya Guvenc, Salim Senturk, Guven Guney, Manuel Ramírez, Ozlem Gulbahar
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引用次数: 0

摘要

目的:右美托咪定(Dexmedetomidine, DEX)是一种选择性α-2肾上腺素能激动剂,在急性缺血性脑卒中后具有抗炎、抗氧化和抗凋亡作用。然而,其对创伤性脑损伤(TBI)的影响仍然是一个开放的领域,相关出版物有限。本实验旨在阐明在动物模型中经鼻(DexN)和腹腔(DexP)给药Dex的作用,并探讨其潜在的作用机制。材料与方法:31只Wistar白化大鼠作为实验性脑损伤减重模型。两组患者均在创伤当日及5 d后分别给予DexN和DexP治疗。采用Garcia试验进行神经学评估,并对NSE、S-100B、CASP3、GSH-PX和TBARS进行组织病理学和生化分析。结果:治疗组大鼠表现出更好的神经系统预后,加西亚测试得分较高(p 0.001)。与鼻给药相比,经腹膜给药的右美托咪定具有更强的抗炎和神经保护作用(p 0.001)。鼻给药DEX显示NSE水平降低(p = 0.023),表明其抑制神经元破坏。在细胞凋亡中起作用的生化参数CASP3的水平明显下降,表明其具有神经保护作用。相反,在细胞氧化应激中起作用的GSH-PX表现出显著的增加,表明其具有抗氧化作用。然而,这些结果在统计学上不显著。结论:目前的研究结果支持了一种假设,即一种精神活性药物,DEX,通常用于治疗睡眠障碍,也以其认知增强特性而闻名,由于其抗炎、抗氧化和神经保护特性,可能对创伤性脑损伤后有益。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Assessing Dexmedetomidin's Efficacy in Traumatic Brain Injury Treatment Using a Rat Experimental Model.

Aim: To elucidate the effects of nasal and intraperitoneal dexmedetomidine (DexN and DexP, respectively) administration in an animal model, and to explore the underlying action mechanisms on the treatment of traumatic brain injury (TBI).

Material and methods: A total of 31 Wistar albino rats served as a weight-drop model to induce experimental TBI. The two treatment groups received DexN and DexP on the day of the trauma and then after 5 days. The Garcia test was performed for the neurological evaluation along with histopathological and biochemical analyses.

Results: The rats in the treatment group displayed better neurological outcomes, as evidenced by a higher Garcia test score (p < 0.001). DexP group presented with increased anti-inflammatory and neuroprotective effects in comparison to DexN (p < 0.001). DexN group demonstrated a reduction in the neuron specific enolase (NSE) levels (p=0.023), indicating that it inhibited the neuronal destruction.

Conclusion: The present study support the hypothesis that a psychoactive drug, Dex, which has been conventionally used for sleep disorders and is also known for its cognitive-enhancing properties, may have beneficial effects after TBI owing to its antiinflammatory, anti-oxidative, and neuroprotective properties.

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