中国畜牧兽医 ›› 2019, Vol. 46 ›› Issue (12): 3768-3774.doi: 10.16431/j.cnki.1671-7236.2019.12.037

• 基础兽医 • 上一篇    下一篇

螺旋藻激酶对大鼠动脉粥样硬化的影响

王慧杰1,2, 庞辉1, 韦娇1, 伍果1   

  1. 1. 广西医科大学, 南宁 530021;
    2. 周口职业技术学院, 周口 466000
  • 修回日期:2019-07-08 发布日期:2019-12-21
  • 通讯作者: 庞辉 E-mail:454720524@qq.com
  • 作者简介:王慧杰(1988-),女,河南周口人,硕士,研究方向:海洋药物及心血管保护机制,E-mail:347920956@qq.com
  • 基金资助:
    广西壮族自治区自然科学基金(2013GXNSFAA019176);广西医科大学创新创业团队项目(2017JGF003)

Effects of Spirulina Kinase on Atherosclerosis Model Rats

WANG Huijie1,2, PANG Hui1, WEI Jiao1, WU Guo1   

  1. 1. Guangxi Medical University, Nanning 530021, China;
    2. Zhoukou Vocational and Technical College, Zhoukou 466000, China
  • Revised:2019-07-08 Published:2019-12-21

摘要: 本研究旨在观察螺旋藻激酶(SPK)对大鼠动脉粥样硬化(AS)的影响并探讨其可能的作用机制。取SD大鼠60只随机均分为正常对照组、模型组、阳性对照组(辛伐他汀,0.005 g/kg)和SPK低、中、高剂量组(80、160、320 U/kg)。除正常对照组外,其余各组通过高脂饲料建立大鼠AS模型,同时给予相应药物,每天1次,试验期12周。末次给药60 min后股动脉取血,分离血清,测定总胆固醇(TC)、高密度脂蛋白胆固醇(HDL-C)、低密度脂蛋白胆固醇(LDL-C)含量并计算动脉粥样硬化指数(AI);测定大鼠血清丙二醛(MDA)、一氧化氮(NO)含量及超氧化物歧化酶(SOD)活性;通过苏木精-伊红(HE)染色法在光镜下观察腹主动脉血管内膜形态改变。结果显示,与正常对照组相比,模型组大鼠AI及血清MDA含量显著升高(P<0.05),血清NO含量和SOD活性显著下降(P<0.05);与模型组比较,SPK高剂量大鼠AI和血清MDA含量显著降低(P<0.05),NO含量和SOD活性显著升高(P<0.05);病理结果显示:模型组有明显粥样斑块形成,SPK各剂量组粥样斑块形成明显减少,尤其中、高剂量组与正常对照组无明显差异。综上所述:SPK有明显的预防AS的作用,其作用机制可能与降低MDA、提高NO含量和SOD活性有关。

关键词: 螺旋藻激酶(SPK); 大鼠; 动脉粥样硬化(AS); 丙二醛; 超氧化物歧化酶; 一氧化氮

Abstract: The study was aimed to observe the effects and preliminary mechanism of Spirulina kinase (SPK) on atherosclerosis (AS) model rats.60 SD rats were randomly divided into normal control group,model group,positive control group (simvastatin,0.005 g/kg),SPK low-dose,medium-dose and high-dose groups(80,160 and 320 U/kg).Except for normal control group,other groups were fed with high fat feed to establish the atherosclerosis model and were given relevant medicine intragastrically once a day for 12 weeks.The artery blood was collected and the content of total cholesterol (TC),high density lipoprotein cholesterol (HDL-C),low density lipoprotein cholesterol (LDL-C) levels,contents of MDA,NO and SOD activity were measured,the atherosclerosis index (AI) was caculated.The change of thoracic aorta were observed by hematoxylin and eosin (HE) staining under microscope.The results showed that:Compared with normal control group,AI and MDA content were significantly increased (P<0.05),SOD activity and NO level were significantly decreased(P<0.05) in model group;Compared with the model group,MDA content was significantly decreased (P<0.05),while SOD activity and NO level were significantly increased (P<0.05) in SPK high-dose group.Pathological results showed that the model group had obvious atherosclerotic plaque formation.The formation of atherosclerotic plaque in SPK groups was significantly reduced,especially in the middle and high dose groups,there was no obvious difference comparing to the normal control group.In conclusion,SPK had obvious effect of preventing AS.Its mechanism might be related to the decrease of MDA and the increase of SOD activity and NO level.

Key words: Spirulina kinase (SPK); rats; atherosclerosis (AS); malondialdehyde; superoxide dismutase; nitric oxide

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