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百里香醌对脂多糖诱导大鼠心肌纤维化的保护作用及机制研究 Δ
蔡 伟 1,2* ,杨佳丹 ,高 珊 ,李世琴 ,王述蓉 (1.西南医科大学药学院,四川 泸州 646000;2.宜宾市第二中
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医医院药剂科,四川 宜宾 644000;3.重庆医科大学附属第一医院药学部,重庆 400016;4.西南医科大学附属
医院药学部,四川 泸州 646000)
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中图分类号 R962;R285;R542.2 3 文献标志码 A 文章编号 1001-0408(2019)04-0464-06
DOI 10.6039/j.issn.1001-0408.2019.04.07
摘 要 目的:探讨百里香醌(TQ)对脂多糖(LPS)诱导的大鼠心肌纤维化(MF)的保护作用及其可能机制。方法:将 40 只雄性
Wistar大鼠随机分为对照组、模型组和TQ低、高剂量组[5、10 mg/(kg·d)],每组10只。除对照组大鼠腹腔注射等体积生理盐水外,
其余各组大鼠均腹腔注射 LPS 复制 MF 模型,每天 1 次,连续 3 周。自造模第 1 天起,各给药组大鼠均腹腔注射相应药物,每天 1
次,连续3周。末次给药后,采用酶联免疫吸附测定法(ELISA)检测各组大鼠血清炎症因子[白细胞介素1β(IL-1β)、IL-6、肿瘤坏死
因子α(TNF-α)]含量;称定并计算其心脏质量参数[心脏质量指数(HW/BM)、左心室质量指数(LVW/BW)];采用苏木精-伊红染色
法观察其心肌组织病理学变化;采用化学分析法、黄嘌呤氧化酶法或酶联免疫吸附法检测其心肌组织中氧化应激指标[丙二醛
(MDA)、超氧化物歧化酶(SOD)]和心肌胶原指标[羟脯氨酸(HYP)、Ⅰ型胶原蛋白(Col-Ⅰ)、Col-Ⅲ]含量或活性;采用实时荧光定
量聚合酶链反应法检测其 MF 相关调控基因[Col-Ⅰ、Col-Ⅲ、基质金属蛋白酶 3(MMP-3)、MMP-9、转化生长因子β 1 (TGF-β 1 )、
Smad3]的mRNA表达情况。结果:与对照组比较,模型组大鼠心肌细胞肿胀,细胞核大小不一且排列紊乱,纤维增生明显;血清炎
症因子含量,LVW/BW,心肌组织MDA、HYP、Col-Ⅰ、Col-Ⅲ含量以及Col-Ⅰ、Col-Ⅲ、TGF-β1、Smad3的mRNA相对表达量均显著
升高(P<0.05),SOD活性显著降低(P<0.05)。与模型组比较,TQ各剂量组大鼠MF程度均有不同程度的改善;TQ低剂量组大鼠
血清 IL-1β含量,心肌组织 MDA、HYP、Col-Ⅰ含量,TQ 高剂量组大鼠血清 IL-1β、IL-6、TNF-α含量,LVW/BW,心肌组织 MDA、
HYP、Col-Ⅰ、Col-Ⅲ含量以及TQ各剂量组Col-Ⅰ、Col-Ⅲ、TGF-β 1的mRNA相对表达量均显著降低(P<0.05);TQ各剂量组心肌
组织SOD活性显著升高(P<0.05)。其余指标组间比较差异均无统计学意义(P>0.05)。结论:TQ对MF模型大鼠具有一定的保
护作用,其作用机制可能与抑制炎症反应和氧化应激反应,下调Col-Ⅰ、Col-Ⅲ、TGF-β1的mRNA表达有关。
关键词 百里香醌;脂多糖;心肌纤维化;炎症反应;氧化应激;调控基因;大鼠
Study on Protective Effect and Its Mechanism of Thymoquinone on Myocardial Fibrosis Induced by
Lipopolysaccharide in Rats
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CAI Wei ,YANG Jiadan ,GAO Shan ,LI Shiqin ,WANG Shurong(1. School of Pharmacy,Southwest Medical
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University,Sichuan Luzhou 646000,China;2. Dept of Pharmacy,Yibin the Second Hospital of TCM,Sichuan
Yibin 644000,China;3. Dept. of Pharmacy,the First Affiliated Hospital of Chongqing Medical University,
Chongqing 400016,China;4. Dept. of Pharmacy,the Affiliated Hospital of Southwest Medical University,
Sichuan Luzhou 646000,China)
ABSTRACT OBJECTIVE:To investigate the protective effect and its mechanism of thymoquinone(TQ)on myocardial fibrosis
(MF)induced by lipopolysaccharide in rats. METHODS:Totally 40 male Wistar rats were randomly divided into control group,
model group,TQ low-dose and high-dose groups [5,10 mg/(kg∙d)],with 10 rats in each group. Except that control group was
given constant volume of normal saline intraperitoneally,other groups were given LPS intraperitoneally to induce MF model,once
a day, for consecutive 3 weeks. Since the first day of modeling, administration group was given relevant medicine
intraperitoneally,once a day,for consecutive 3 weeks. After last medication,ELISA method was used to detect the contents of
serum inflammation factors (IL-1 β ,IL-6,TNF-α) in rats. Cardiac mass parameters(HW/BM,LVW/BW) were weighed and
calculated. HE staining was used to observe the histopathological changes of myocardial tissue. The contents or activities of
oxidative stress indicators(MDA,SOD)and myocardial collagen indexes(HYP,Col-Ⅰ,Col-Ⅲ)were detected by chemical
analysis,xanthine oxidase method or ELISA. mRNA expression of regulation genes(Col-Ⅰ,Col-Ⅲ,MMP-3,MMP-9,TGF-β 1
and Smad3)related to myocardial fibrosis were determined by real-time fluorescence quantitative PCR. RESULTS:Compared with
control group, there were swollen myocardial cells,
Δ 基金项目:国家自然科学基金资助项目(No.81603330);重庆
disordered nuclei of different sizes and visible fiber
市科卫联合中医药科技项目(No.ZY201802043)
hyperplasia in model group;the levels of serum inflammatory
*主管药师,硕士研究生。研究方向:临床药学。电话:0831-
7180125。E-mail:490534361@qq.com factors and LVW/BW,cardiac contents of MDA,HYP,Col-
# 通信作者:副主任药师,硕士。研究方向:临床药学。E-mail: Ⅰ and Col- Ⅲ ,mRNA expression of Col- Ⅲ ,TGF-β 1 and
wangshurong11@126.com Smad3 in model group were increased significantly (P<
·464 · China Pharmacy 2019 Vol. 30 No. 4 中国药房 2019年第30卷第4期