中国神经再生研究(英文版) ›› 2024, Vol. 19 ›› Issue (12): 2750-2759.doi: 10.4103/1673-5374.391300

• 原著:脑损伤修复保护与再生 • 上一篇    下一篇

姜酮增强核因子红细胞2相关因子2表达:减轻氯化镉诱导海马损伤和记忆功能障碍的机制

  

  • 出版日期:2024-12-15 发布日期:2024-03-30
  • 基金资助:
    这项研究由哈立德国王大学研究院长资助;Nourah bint Abdulrahman 公主大学研究人员;Nourah 公主沙特阿拉伯利雅得宾特阿卜杜拉赫曼大学

Vanillylacetone attenuates cadmium chloride-induced hippocampal damage and memory loss through up-regulation of nuclear factor erythroid 2-related factor 2 gene and protein expression

Fahaid H. AL-Hashem1, Salah O. Bashir1, Amal F. Dawood2, Moutasem S. Aboonq3, Ismaeel Bin-Jaliah1, Abdulaiziz M. Al-Garni4, Mohamed D. Morsy1, *   

  1. 1Department of Physiology, College of Medicine, King Khalid University, Abha, Saudi Arabia; 2Department of Basic Medical Sciences, College of Medicine, Princess Nourah bint Abdulrahman University, P.O.Box 84428, Riyadh 11671, Saudi Arabia; 3Department of Physiology, College of Medicine, Taibah University, Al-Madinah Al-Munawwarah, Saudi Arabia; 4Department of Medicine, College of Medicine, King Khalid University, Abha, Saudi Arabia
  • Online:2024-12-15 Published:2024-03-30
  • Contact: Mohamed D. Morsy, MD, morsydarwesh@yahoo.com.
  • Supported by:
    This work was funded by the Research Deanship of King Khalid University, No. GRP-215-43 (to FHA); Princess Nourah bint Abdulrahman University Researchers Supporting Project, No. PNURSP2023R110 (to AFD).

摘要:

氧化应激在海马损伤引起的记忆力减退的病理生理学中起着重要作用。实验试图确定抗氧化和抗炎化合物姜酮是否能保护大鼠免受氯化镉诱导的海马损伤和记忆力减退,探讨其作用机制是否与能调节氧化应激和炎症的核因子红细胞2相关因子2信号实现。结果显示,姜酮可减轻氯化镉对大鼠海马的损伤,改善记忆功能。姜酮可显著降低氯化镉诱导损伤的海马组织中的炎症生物标志物白细胞介素6(IL-6)和肿瘤坏死因子α、细胞内粘附分子以及凋亡生物标志物Bax和裂解的caspase-3的水平, 还可抑制海马活性氧和丙二醛的生成,增强超氧化物歧化酶和谷胱甘肽表达,同时显著提高核 Nrf2 的 mRNA 和蛋白表达;布芦沙托(一种选择性 Nrf2 抑制剂)可抑制姜酮的这些保护作用。这些结果说明,姜酮可通过激活核因子红细胞2相关因子2表达,减轻氯化镉对海马的损伤,改善记忆功能。

https://orcid.org/0000-0003-1176-3380 (Mohamed D. Morsy)

Abstract: Memory loss and dementia are major public health concerns with a substantial economic burden. Oxidative stress has been shown to play a crucial role in the pathophysiology of hippocampal damage-induced memory impairment. To investigate whether the antioxidant and anti-inflammatory compound vanillylacetone (zingerone) can protect against hippocampal damage and memory loss induced by cadmium chloride (CdCl2) administration in rats, we explored the potential involvement of the nuclear factor erythroid 2-related factor 2 (Nrf2) signaling pathway, which is known to modulate oxidative stress and inflammation. Sixty healthy male Wistar rats were divided into five groups: vehicle-treated (control), vanillylacetone, CdCl2, vanillylacetone + CdCl2, vanillylacetone + CdCl2 + brusatol (a selective pharmacological Nrf2 inhibitor) groups. Vanillylacetone effectively attenuated CdCl2-induced damage in the dental gyrus of the hippocampus and improved the memory function assessed by the Morris Water Maze test. Additionally, vanillylacetone markedly decreased the hippocampal tissue levels of inflammatory biomarkers (interleukin-6, tumor necrosis factor-α, intracellular cell adhesive molecules) and apoptosis biomarkers (Bax and cleaved caspase-3). The control and CdCl2-treated groups treated with vanillylacetone showed reduced generation of reactive oxygen species, decreased malondialdehyde levels, and increased superoxide dismutase and glutathione activities, along with significant elevation of nuclear Nrf2 mRNA and protein expression in hippocampal tissue. All the protective effects of vanillylacetone were substantially blocked by the co-administration of brusatol (a selective Nrf2 inhibitor). Vanillylacetone mitigated hippocampal damage and memory loss induced by CdCl2, at least in part, by activating the nuclear transcription factor Nrf2. Additionally, vanillylacetone exerted its potent antioxidant and anti-inflammatory actions.

Key words: hippocampus, neuroprotective, Nrf2 gene, oxidative stress, vanillylacetone