天然产物研究与开发 ›› 2016, Vol. 28 ›› Issue (4): 579-585.doi: 10.16333/j.1001-880.2016.4.020

• 开发研究 • 上一篇    下一篇

神香草挥发油抗氧化能力和血管舒张作用及其机制研究

阿勒腾图娅1,2,姜敏1,郭玉婷3,张洪平1*   

  1. 1 新疆医科大学附属中医医院国家中医临床研究基地;2 新疆医科大学研究生院;3 新疆医科大学对口协作办公室,乌鲁木齐 830011
  • 出版日期:2016-04-30 发布日期:2016-05-13

Antioxidant and Vasodilatative Effects of Hyssopus officinalis Boriss Essential Oil on Isolated Rat Thoracic Aorta

Aletengtuya1.2,JIANG Min1,GUO Yu-ting3,ZHANG Hong-ping1*   

  1. 1 The National Clinical Research Base of Traditional Chinese Medicine,Affiliated Hospital of Traditional Chinese Medicine, Xinjiang Medical University; 2 The Postgraduate College of Xinjiang Medical University; 3 The Counterpart  Cooperation office of Xinjiang Medical University,Xinjiang Urumqi 830011,China
  • Online:2016-04-30 Published:2016-05-13

摘要: 研究神香草挥发油(Hyssopus officinalis Essential Oil,HEO)抗氧化能力和对大鼠离体胸主动脉环血管舒张作用及其作用机制。采用2,2-二(4-叔辛基苯基)1-苦肼基自由基(DPPH)自由基法、邻苯三酚自氧化法,以维生素C(Vc)为参照,研究HEO抗氧化活性;采用BL-420生物机能实验系统,描记血管张力变化,每组血管来自同批大鼠。结果显示HEO具有一定清除自由基能力,DPPH自由基法和邻苯三酚法测得HEO最大抑制率分别为19.24%和11.44%。在测定大鼠胸主动脉实验中,HEO各浓度(100~1100 mg/L)对去氧肾上腺素(phenylephrine,PE)预收缩的血管舒张作用明显。内皮完整组和去内皮组最大舒张效率Emax分别为96.34%±5.13%和94.39%±8.95%;HEO对多巴胺(Dopamine,Dopa)、K+和PE诱导血管收缩的最大抑制率分别为74.38%、89.91%和95.81%;与对照组相比,HEO处理组CaCl2量效曲线被明显右移(P<0.01)。HEO的抗氧化性较弱且具有非内皮依赖和浓度依赖舒张血管作用,其机制可能与抑制外钙内流干扰胞质内钙离子平衡和抑制部分血管收缩物质引起的血管收缩有关。

关键词: 神香草, 抗氧化, 血管舒张, 钙通道, 邻苯三酚自氧化法

Abstract: The aim of this study was to investigate the antioxidant and vasodilatative effects of Hyssopus officinalis essential oil (HEO) on thoracic aorta rings in vitro and to elucidate the possible mechanism.The antioxidant properties of HEO were evaluated by different antioxidant tests,including 2,2 diphenyl-2-bitter hydrazo (DPPH) scavenging ability and pyrogallol autoxidation.The thoracic aorta was isolated from male Sprague-Dawley (SD) rats,the isometric tension of aortic rings with or without endothelium was measured.The recording changes in vascular tone were measured by BL-420 bio-functional experiment system.HEO had a certain ability to scavenge free radicals,the maximum scavenging rates on DPPH radical and pyrogallol radical were 19.24% and 11.44%,respectively.HEO (100-1100 mg/L) produced concentration-dependent,endothelium-independent relaxations in phenylephrine (PE)-contracted aortic rings.As a result,the maximum relaxation by HEO was 96.34%±5.13% in endothelium intact rings and 94.39%±8.95% in endothelium removed rings.HEO pre-treatment significantly inhibited vasoconstrictions to Dopamine (Dopa),potassium ions (K+) and PE by 74.38% ,89.91% and 95.81%,respectively (P<0.01).Compared with the control group,HEO markedly inhibited potassium-stimulated Ca2+-dependent contraction which mainly due to Ca2+ influx (P<0.01).In conclusion,HEO had partly antioxidant activities and relaxed the isometric tension of aortic rings in an endothelium-independent manner,mainly through interfering intracellular calcium homeostasis by blocking Ca2+ influx and intracellular Ca2+ release,as well as inhibiting the vascular contraction by partial of the vasoconstrictor.

Key words: Hyssopus officinalis, antioxidant, vasodilation, calcium channel, pyrogallol self-oxidation

中图分类号: 

R966