摘要
为研究豁痰解毒通络饮(HTJDTL)对兔早期动脉粥样硬化(AS)模型的疗效,探讨其是否通过抑制四氢生物蝶呤(BH4)/内皮型一氧化氮合酶(eNOS)解耦联/活性氧簇(ROS)途径抗AS,将24只日本大耳白兔随机分为假手术组、模型组、豁痰解毒通络饮组、阿托伐他汀组,采用高脂饲料+氮气干燥术+颈总动脉球囊损伤术建立兔早期动脉粥样硬化模型,球囊损伤术后7 d取材。取损伤侧颈总动脉进行HE染色观察病理形态,过氧化物酶法检测血脂四项,免疫印迹法检测血管eNOS二聚体和单聚体的比值,酶联免疫吸附试验检测血清BH4水平,生化法检测血清ROS水平。结果显示,与假手术组相比,模型组损伤侧颈总动脉管腔轻度狭窄,内膜不均匀增生,内膜和中膜有脂质沉积,外膜增生明显伴炎细胞浸润;豁痰解毒通络饮组内膜增生较模型组明显减少,中膜脂质沉积明显减轻,外膜炎细胞浸润较少。与假手术组比较,模型组的血脂五项显著升高,BH4明显降低,eNOS二聚体/单聚体的比值显著下降,ROS明显升高;与模型组比较,豁痰解毒通络饮显著降低TC及ox-LDL水平,有升高BH4趋势,但差异无统计学意义;同时显著上调eNOS二聚体/单体比值;明显降低ROS水平。结果表明,豁痰解毒通络饮可明显改善兔早期动脉粥样硬化模型的血管重构,对AS具有防治作用,其机制可能与抑制BH4/eNOS解耦联,减少氧化应激有关。
The aim of this paper was to study the curative effect of Huotan Jiedu Tongluo(HTJDTL) decoction on a rabbit model with early atherosclerosis(AS),and furtherly to explore whether it could inhibit the BH4/eNOS uncoupling ROS or not. Twenty-four Japanese white rabbits were randomly divided into sham operation group, model group, HTJDTL decoction group and atorvastatin group. Rabbit models with early atherosclerosis were established by high fat diet, nitrogen drying and carotid artery balloon injury. The rabbits were sacrificed at 7 th days after balloon injury and several parameters were measured. The pathological morphology of the common carotid artery was observed by HE staining. The blood lipids were detected by peroxidase method. The ratio of vascular eNOS dimer and monomer was measured by Western blot. The ELISA and biochemical technology were respectively used for testing BH4 and ROS levels in serum. The results showed that compared with the sham operation group, the model group had mild stenosis of the common carotid artery lumen, uneven intimal hyperplasia, lipid deposition in the intima and media, and obvious hyperplasia of the adventitia with inflammatory cell infiltration. The HTJDTL decoction could significantly inhibit the intimal hyperplasia compared with the model group, meanwhile, reduce the lipid deposition of the media and the infiltration of the adventitial cells. Compared with the sham operation group, the blood lipids and ROS of the model animals significantly increased, but BH4 and the ratio of eNOS dimer/monomer decreased. Compared with the model group, HTJDTL decoction significantly reduced the TC, ox-LDL and ROS levels, and also up-regulated eNOS dimer/monomer ratio, but it increased BH4 trend without statistical difference. According to the results, it was found that HTJDTL decoction couldsignificantly prevent and improve the vascular remodeling of rabbits model with early atherosclerosis. The mechanism of decoction may largely be related to the inhibition of BH4/eNOS uncoupling and the reduction of oxidative stress.
作者
李彤
赵明镜
韩小婉
邓悦
赵一舟
杨涛
王蕾
王保福
陆梓雯
成文堃
吴爱明
娄利霞
赵久丽
LI Tong;ZHA0 Ming-jing;HAW Xiao-wan;DENG Yue;ZHA0 Yi-zhou;YANG Tao;WANG Lei;WANG Bao-fu;LU Zi-wen;CHENG Wen-kun;WU Ai-ming;LOU Li-xia;ZHA0 Jiu-li(Key Laboratory of Chinese Internal Medicine of Ministry of Education and Dongzhimen Hospital, Institute of Cardiovascular Research,Integrated Traditional Chinese and Western Medicine and Blood Research Laboratory,Beijing University of Chinese Medicine,Beijing 100700,China;the First Affiliated Hospital of Changchna University of Traditional Chinese Medicine,Changchzm 130021,China)
出处
《中国中药杂志》
CAS
CSCD
北大核心
2018年第21期4305-4310,共6页
China Journal of Chinese Materia Medica
基金
国家自然科学基金项目(81774127)
国家中医药管理局基地项目(JDZX2015051)
