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中国临床药理学与治疗学 ›› 2017, Vol. 22 ›› Issue (7): 743-748.

• 基础研究 • 上一篇    下一篇

D-4F在七氟烷处理对急性高糖血症小鼠血管保护中的作用及机制

刘若海1,卢园园1,李丽伶2,沈露露1,曹 红3,李 军1,李 旭3   

  1. 1 温州医科大学附属第二医院麻醉科,温州 325027,浙江; 2 温州医科大学附属第一医院麻醉科,温州 325000,浙江; 3 温州医科大学仁济学院,温州 325035,浙江
  • 收稿日期:2015-12-29 修回日期:2016-11-22 出版日期:2017-07-26 发布日期:2017-07-19
  • 通讯作者: 李旭,女,博士,讲师,研究方向:心血管疾病。 E-mail:lixu0577@126.com
  • 作者简介:刘若海,男,硕士,主治医生,研究方向:临床麻醉。 E-mail:liuruuohai@163.com
  • 基金资助:

    浙江省自然科学基金青年项目(LQ17H020004);浙江省教育厅一般科研项目(Y201431185);温州市公益性科技计划项目(Y20160368)

D-4F enhances sevoflurane-induced vascular protection during acute hyperglycemia

LIU Ruohai1, LU Yuanyuan1, LI Liling 2, SHEN Lulu1,CAO Hong3, LI Jun1, LI Xu3   

  1. 1 Department of Anesthesiology,the Second Affiliated Hospital of Wenzhou Medical Universtiy,Wenzhou 325027, Zhejiang, China; 2 Department of Anesthesiology,the First Affiliated Hospital of Wenzhou Medical Universtiy,Wenzhou 325000, Zhejiang, China;3 Renji Hospital of Wenzhou Medical Universtiy, Wenzhou 325035, Zhejiang, China
  • Received:2015-12-29 Revised:2016-11-22 Online:2017-07-26 Published:2017-07-19

摘要:

目的: 观察apoA-1拟似物D-4F对七氟烷麻醉急性高糖血症小鼠的血管保护效应。方法: 实验一,雄性 C57BL/6J小鼠随机分4组(n=8):对照组(CON组)、 D-4F组、急性高血糖组(AHG组)、 AHG+D-4F组,各组再进行吸入1.71%七氟烷(SEV),检测各组血糖、主动脉血管环舒张功能、NO水平,Western blot检测内皮型一氧化氮合酶(eNOS)、磷酸化的eNOS(p-eNOS)、小凹蛋白(Cav-1)水平;实验二,人脐静脉血管内皮细胞(HUVEC)分别用5.5、20.0 mmol/L 的葡萄糖培养24 h,4 μg/mL 布雷德菌素A (BFA)和0.5 μg/mL D-4F孵育1 h,再进行SEV处理,检测ROS水平。结果: AHG组显示急性高血糖时血管的舒张能力下降,主动脉产生NO减少,Cav-1蛋白表达明显增强,eNOS活性下降。D-4F组显示加入D-4F并不能提高急性高血糖时的血管舒张能力,AHG+D-4F组显示给予SEV刺激后D-4F对血管的舒张有改善作用(P<0.01),Cav-1蛋白表达下降,eNOS活性增强,NO生成增多。细胞实验显示SEV刺激下,HG+D-4F组ROS的生成下降,D-4F该功能并可被BFA所阻断。结论: D-4F可恢复SEV对急性高糖血症的血管保护功能,其机制可能与D-4F降低细胞内脂质筏区域Cav-1的耦合能力,增强脂质筏里eNOS的磷酸化,NO生成增多,ROS生成减少,减轻急性高血糖的血管损害有关。

关键词: 七氟烷, 心血管保护, D-4F, 急性高糖血症, 一氧化氮, 活性氧

Abstract:

AIM: To investigate the effects of sevoflurane-induced vascular protection by apolipoprotein A-1 mimetic D-4F during acute hyperglycemia.  METHODS:Thrty-two male C57BL/6J mice were randomly assigned to 4 groups (n=8). Control group(CON group), D-4Fgroup, acute hyperglycemia group(AHG group), dextrose 2 g/kg (intraperitoneal injection); AHG+D-4F group. Blood glucose, isometric aortic tension, nitric oxide (NO) were measured in mice in the absence or presence of sevoflurane(1.71%). Expressions of eNOS,p-eNOS,Cav-1 in arterioles were determined by Western blot.Superoxide generation species (ROS) were assessed in human umbilical vein endothelial cells (HUVEC) cultured in 5.5 or 20.0 mmol/L glucose with isoflurane (0.5 mmol/L) in the presence or absence of brefeldin A (BFA, 4 μg/mL) or D-4F (0.5 μg/mL). RESULTS: Vasodilation, phosphorylations, NO production of eNOS were decreased while Cav-1 expression was increased during acute hyperglycemia. D-4F increased endothelium-dependent vasodilation (P<0.01) while decreased Cav-1 expression and ROS production in HG+D-4F group after sevoflurane-induction.CONCLUSION: Polipoprotein A-1 mimetic D-4F can enhance sevoflurane-induced vascular protection, decrease Cav-1 expression and ROS production while increase NO production during acute hyperglycemia.

Key words: sevoflurane, vascular protection, D-4F, acute hyperglycemia, NO, ROS

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