用血清药理学方法观察冬连三七组分调控TGF-β1/p38MAPK/CREB通路改善糖尿病动脉硬化兔平滑肌细胞增殖的机理研究*
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(1. 中国中医科学院西苑医院,北京 100091;2. 辽宁省基础医学研究所,辽宁 沈阳 110005)

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R285.5

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收稿日期: 2018 - 05- 23 *
基金项目: 国家自然科学基金(81374026);中国中医科学院名医名家传承项目(05-78)
第一作者简介: 靳昭辉(1984-),女,中国中医科学院西苑医院博士后,主治医师,研究方向:老年病的中医药基础与临床研究。
△通信作者: 靳冰,E-mail:lordnec@126.com


Effects of CONR on Proliferation of Vascular Smooth Muscle Cells of Diabetic Atherosclerotic Rabbit Modle by Interventing TGF-β1/p38MAPK/CREB Signal Pathway Using Serum Pharmacology
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(1. Geriatric Research Center of Xiyuan Hospital of China Academy of Traditional Chinese Medicine, Beijing 100091, China;2. Liaoning Basic Medical Research Institute, Shenyang 110005, China)

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    摘要:

    目的采用血清药理学方法观察冬连三七组分(CONR)干预TGF-β1/p38MAPK/CREB通路对糖尿病动脉硬化兔血管平滑 肌细胞增殖的影响。方法1. 选择纯种雄性新西兰家兔5只,4只分别每日给予辛伐他汀3 mg/kg,CONR150 mg/kg、450 mg/kg灌胃,共10 d;SB203580腹腔注射2 mg/kg,Q12 h,10 d;另一只每日给予生理盐水20 mL作为对照。制备含药血清 。2. 正常雄性新西兰大白兔静脉推注四氧嘧啶并且配合高脂饮食、腹主动脉内膜球囊损伤术诱导糖尿病动脉粥样硬化模型 。3. 造模成功后,分离模型兔腹主动脉SMC,并传代培养,使用3代细胞进行实验。4. 分组:设立正常组、模型组、CONR 高剂量组、CONR低剂量组、SB203580组、辛伐他汀组,实验组予含药血清进行干预,空白组、模型组予正常血清进行干预 。5. 采用cck-8法测定相应的吸光度,计算50%抑制率浓度;WB法检测各组平滑肌p-CREB、p-p38MAPK、TGF-β1蛋白的表达 。结果离体实验表明CONR对平滑肌细胞增殖具有抑制作用,其50%抑制率浓度(IC50)为12.53 μg/mL。CONR高、低剂量组 、SB203580组及辛伐他汀组对p-CREB、p-p38MAPK、TGF-β1蛋白表达均有抑制作用,与模型组比较差异有统计学意义 (P<0.01);辛伐他汀组及CONR 2组优于SB203580组对p-p38MAPK蛋白的抑制(P<0.01),3组之间差异无统计学意义 (P<0.01)。实验4组对TGF-β1、p-CREB蛋白有抑制作用,4组间无显著统计学差异(P>0.05)。结论冬连三七组分可能部 分通过抑制TGF-β1/p38MAPK/CREB通路抑制DA兔VSMC的增殖。

    Abstract:

    Objective The purpose of this study was to explore the effects of Composition of Ophiopogon polysaccharide, Notoginseng total saponins and Rhizoma Coptidis alkaloids(CONR) on proliferation of diabetic atherosclerotic rabbit modle by interventing TGF-β1/p38MAPK/CREB signal pathway using Serum pharmacology. Methods 1. Select 5 pure male New Zealand rabbits, and 4 of them were respectively given CONR 450 mg/kg, CONR 150 mg/kg each day; Simvastatin 3 mg/kg for 10 days; SB203580 2 mg/kg abdominal injection, 12 h repeated for 10 days; the other one was given 20mL saline solution daily. Preparation of drug containing serum; Another daily saline solution was 20 mL of saline. Drug containing serum was prepared. 2. Normal male New Zealand white rabbit were intravenous injected alloxan and feed high-fat diet , then abdominal aortic balloon injury was done to induce diabetic atherosclerosis model. 3. The rabbit’ aorta abdominalis SMC was isolated and cultured, and the third generations of cells were used for the experiment. 4. Grouping: set up the normal group, model group, CONR high dose group, the CONR low-dose group, SB203580 group, simvastatin group, and the experimental group were given drug-containing serum, the blank group, model group normal serum. 5. CCK 8 method is used to determine the corresponding absorbance, and we calculate 50% inhibition concentration; Western blotting was used to detect the expression of TGF-β1、 p-p38MAPK、 p-CREB protein of diabetic arteriosclerosis rabbits. Results The experimental results showed that CONR had inhibitory effect on the proliferation of smooth muscle cells, and the concentration of 50% inhibition rate(IC50) was 12.53 g/mL. Simvastatin group, SB203580 group and CONR high, low dose group had inhibitory effect on TGF-β1、 p-p38MAPK、 p-CREB protein expression, which was statistically significant compared with the model group(P<0.01). The inhibitory effect of CONR high, low dose group and simvastatin group on p-p38MAPK protein was better than that of SB203580 group(P<0.01) , and there was no statistically significant difference between the three groups(P<0.01). Simvastatin group, SB203580 group and CONR high, low dose group had inhibitory effects on TGF-β1、 p-CREB, and there was no statistically significant difference between the four groups(P>0.05). Conclusion Composition of Ophiopogon polysaccharide, Notoginseng total saponins and Rhizoma Coptidis alkaloids(CONR) may be able to inhibite proliferation of diabetic atherosclerotic rabbit modle by interventing TGF- β1/p38MAPK/CREB signal pathway using Serum pharmacology.

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