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灵芝酸治疗大鼠原发性高血压的实验

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灵芝酸治疗大鼠原发性高血压的实验灵芝酸治疗大鼠原发性高血压的实验 灵芝酸治疗大鼠原发性高血压的实验研究 赵东生赵文元     [摘要]  目的  探讨灵芝酸治疗大鼠原发性高血压的作用及机制。  方法  雄性原发性高血压大鼠(SHR)30只,随机分成对照组、灵芝组、阳性组。各组SHR在常规喂养的基础上,对照组给以蒸馏水10 ml/kg,灵芝组给以灵芝酸0.6 g/kg,阳性组给以卡托普利0.03 g/kg,1次/d,灌胃。8周后,采血5 ml检测相关生化指标,同时解剖各组SHR,取主动脉作检测样本,用反转录聚合酶链式反应(RT-PCR)技术,检测超氧化物歧化酶...
灵芝酸治疗大鼠原发性高血压的实验
灵芝酸治疗大鼠原发性高血压的实验 灵芝酸治疗大鼠原发性高血压的实验研究 赵东生赵文元     [摘要]  目的  探讨灵芝酸治疗大鼠原发性高血压的作用及机制。  方法  雄性原发性高血压大鼠(SHR)30只,随机分成对照组、灵芝组、阳性组。各组SHR在常规喂养的基础上,对照组给以蒸馏水10 ml/kg,灵芝组给以灵芝酸0.6 g/kg,阳性组给以卡托普利0.03 g/kg,1次/d,灌胃。8周后,采血5 ml相关生化指标,同时解剖各组SHR,取主动脉作检测样本,用反转录聚合酶链式反应(RT-PCR)技术,检测超氧化物歧化酶(SOD)、一氧化氮合成酶(NOS)及高密度脂蛋白(HDL)的基因达,用流式细胞术检测内皮细胞的凋亡。  结果  治疗8周后,灵芝组SHR的血压趋于正常,血压(112.6±3.2)mm Hg(P<0. 01);灵芝组SHR的SOD、NOS、HDL的基因表达明显上调,内皮细胞的凋亡率显著下降(P<0.01);灵芝组SHR的一氧化氮(NO)的生成显著增加,内皮素-1(ET-1)、丙二醛(MDA)的含量均显著下降(P<0,01)。灵芝组SHR的低密度脂蛋白(LDL)显著降低,HDL显著升高(P<0.01)。  结论  灵芝酸可通过促进SOD的基因表达,提高SOD活性,清除自由基;促进NOS的基因表达,增加NO的生成;抑制内皮细胞的凋亡,从而改善和恢复内皮细胞的功能,发挥有效的降压功能。 大鼠,近交SHR;灵芝;  内皮细胞;基因表达 Study on ganoderma acid in the treatment of rats essential hypertension HAO ZHAO Dong-shengZWen-yuan College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China       [Abstract]  Objective  To investigate the effect and mechanism of ganoderma acid in therapy of the rat essential hypertension.    Methods   30 male spontaneously hypertensive rat (SHR) were divided randomly into three groups: control group (CG), ganoderma acid group (Gan) and captoril (Cap) as positive control group. SHR were fed with distilled water (10 ml/kg) in control group,ganoderma acid (0. 6 g/kg ) in Gan group, catopril (0. 03 g/kg) in Cap group.  After 8-weeks therapy, 5 ml blood was extracted, rats in every group were sacrificed to get the aorta. The mRNA expression of superoxide dismutase (SOD), nitric oxide synthase (NOS) and high density lipoprotein (HDL) were detected by RT-PCR and the apoptosis of endothelial cells were measured by flowcytometry.    Results   After the 8 weeks therapy, as compared with the CG group, blood pressure of SHR in Gan group became stable [(112. 6±3.2) mm Hg] (P<0. 01). The expression of SOD, NOS and HDL showed obviously upregulated, and apoptosis of endothelial cell decreased significantly (P<0. 01). NO contents increased, and MDA, ET-1 decreased (P<0. 01). The contents of LDL decreased and HDL increased (P<0. 01).   Conclusions  Ganoderma acid may improve the function of endothelial cell and decrease the blood pressure by promoting the mRNA expression and activity of SOD, cleaning the radical ions and inhibiting the apoptosis of the endothelial cell. Rats,inbred SHR;  Ganoderma lucidum;  Endothelial cells;  Gene expression 10. 3760/cma. j. issn. 0254-9026.2011.10.019 100081  北京,中央民族大学生命与环境科学学院(赵 东生)山东临沂郑山医院内科(赵文元) 万方数据 结    果 万方数据 @@[1] Tai MH, Wang LL,  Wu KL,  et al.  Increased      superoxide anion in  rostral ventrolateral medulla      contributes   to   hypertension   in   spontaneously      hypertensive rats via interactions with nitric oxide.      Fadic Biol Med, 2005, 38: 450-462. @@[2]黎键.氧化应激在周围动脉硬化疾病发生过程中的    作用.中华老年医学杂志,2007,26:328-330. @@[3] Lee SY. Cardiovascular effects of mycelium extract of      Ganoderma  lucidum:   inhibition  of  sympathetic      outflow as a mechanism of its hypotensive action.     Chem Pharm Bull, 1990, 38: 1395-1398.     vascular. Biology, 1998, 18: 503-513.@@[4] Pantoni L.   Arteriosclerosis,   thrombosis,   and @@[5] Borutaite V,Morkuniene R, Brown GC. Nitric oxide      donors,  nitrothils,  and  mitochondrial  respiration      inhibitors induce  caspase activation  by  different      mechanisms. Febs Lett, 2000, 467: 155-159.@@[6] Labreuche J, Touboul  PJ,  Amarenco P.  Plasma      triglyceride levels and risk of stroke and carotid      atherosclerosis :   a   systematic   review   of   the      epidemiological studies. Atherosclerosis, 2009 , 203:     331-345. 2011-07-19 万方数据
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