畜牧兽医学报 ›› 2023, Vol. 54 ›› Issue (2): 779-786.doi: 10.11843/j.issn.0366-6964.2023.02.034

• 基础兽医 • 上一篇    下一篇

右美托咪定抑制NOX4缓解急性应激致大鼠肾损伤

杨昊天1, 陈永平2, 王志强1, 黄宇翔1, 马志刚1, 邹跃1, 魏念冬1, 张红1, 李鑫1, 董佳强1, 吕明哲1, 李洪彬1, 刘力威1, 杨昊轩3, 张国华1, 刘雪松1, 钟鹏1, 石荷叶4, 寇玉红5, 陈志峰1*   

  1. 1. 黑龙江省农业科学院畜牧兽医分院, 齐齐哈尔 161005;
    2. 青岛农业大学动物医学学院, 青岛 266109;
    3. 内蒙古自治区扎兰屯市高台子党群服务中心, 扎兰屯 162650;
    4. 大庆市杜尔伯特蒙古族自治县畜牧技术服务中心, 大庆 166200;
    5. 黑龙江省农业科学院大豆研究所, 哈尔滨 150086
  • 收稿日期:2022-08-01 出版日期:2023-02-23 发布日期:2023-02-21
  • 通讯作者: 陈志峰,主要从事营养与繁殖研究,E-mail:qqhr139@sina.com
  • 作者简介:杨昊天(1995-),男,黑龙江齐齐哈尔人,实习研究员,硕士,主要从事家禽疾病研究,E-mail:954161803@qq.com
  • 基金资助:
    现代农业产业技术体系建设专项资金(CARS-42-34);国家自然科学基金(31902337);黑龙江省农业科学院畜牧兽医分院自拟课题

Dexmedetomidine Inhibits NOX4 and Alleviates Acute Stress-induced Renal Injury in Rats

YANG Haotian1, CHEN Yongping2, WANG Zhiqiang1, HUANG Yuxiang1, MA Zhigang1, ZOU Yue1, WEI Niandong1, ZHANG Hong1, LI Xin1, DONG Jiaqiang1, Lü Mingzhe1, LI Hongbin1, LIU Liwei1, YANG Haoxuan3, ZHANG Guohua1, LIU Xuesong1, ZHONG Peng1, SHI Heye4, KOU Yuhong5, CHEN Zhifeng1*   

  1. 1. Animal Husbandry and Veterinary Branch of Heilongjiang Academy of Agricultural Sciences, Qiqihaer 161005, China;
    2. College of Veterinary Medicine, Qingdao Agricultural University, Qingdao 266109, China;
    3. Party Service Center in Gaotaizi, Zhalantun City, Inner Mongolia Autonomous Region, Zhalantun 162650, China;
    4. Daqing Dulbert Mongol Autonomous County Animal Husbandry Technology Service Center, Daqing 166200, China;
    5. Soybean Research Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China
  • Received:2022-08-01 Online:2023-02-23 Published:2023-02-21

摘要: 本研究拟探索右美托咪定(dexmedetomidine,DEX)对大鼠急性应激致肾损伤的保护作用,并从氧化应激的角度探索DEX对大鼠肾的保护通路。本研究使用了急性束缚应激模型,其中,大鼠被迫游泳15 min,并束缚3 h。本试验采用生化检测、组织病理学切片观察以评估肾功能,然后测定了氧化应激以及氧化应激的相关通路蛋白。旷场试验证实成功建立了急性应激模型。急性应激引起的肾损伤增加了NOX4,降低了Nrf2/HO-1/NQO1表达水平。DEX可降低NOX4表达,同时升高Nrf2/HO-1/NQO1的表达水平。DEX治疗组与急性应激组相比的肾生化结果明显恢复正常,病理切片观察损伤显著降低。试验结果表明,DEX治疗急性应激可影响NOX4/Nrf2/HO-1/NQO1信号通路,并抑制氧化应激。因此,DEX对急性应激引起的肾损伤具有保护作用,并在应激综合征中具有潜在的临床应用。

关键词: 急性应激, 氧化应激, 肾损伤, 右美托咪定, NOX4

Abstract: This study was conducted to investigate the protective effects of dexmedetomidine (DEX) on renal injury caused by acute stress in rats and to explore the protective pathways of DEX on rat kidney from the perspective of oxidative stress. In this study, an acute restraint stress model was used, in which rats were forced to swim for 15 minutes and restrained for 3 hours. This experiment was performed with biochemical assays, histopathological section observation to assess renal function, followed by determination of oxidative stress and proteins of pathways related to oxidative stress. The open-field experiments confirmed that the acute stress model had been successfully established. DEX decreased NOX4 expression and increased Nrf2/HO-1/NQO1 expression, and the kidney biochemical results were significantly normalized in the DEX-treated group compared with the acute stress group, and the damage was significantly reduced in the pathological sections. The experimental results suggest that DEX treatment of acute stress can affect NOX4/Nrf2/HO-1/NQO1 signaling pathway and inhibit oxidative stress. Therefore, DEX has a protective effect on acute stress-induced renal injury and has potential clinical applications in stress syndromes.

Key words: acute stress, oxidative stress, kidney injury, dexmedetomidine, NOX4

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