Page 27 - 2021年14期
P. 27
·药学研究·
黄水枝醇提物对CCl4致小鼠肝纤维化的改善作用及其机制初探 Δ
黄甫静 ,张金娟 ,董 莉 ,李 雕 ,张春雷 ,廖尚高 ,何 迅 (1.贵州医科大学药学院,贵阳 550025;2.贵
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州医科大学基础医学院,贵阳 550025)
中图分类号 R965 文献标志码 A 文章编号 1001-0408(2021)14-1685-07
DOI 10.6039/j.issn.1001-0408.2021.14.04
摘 要 目的:考察黄水枝醇提物(TPME)对四氯化碳(CCl4 )致小鼠肝纤维化的改善作用,并初步探讨其可能的作用机制。方法:
将60只雄性昆明种小鼠按体质量随机分为正常组、模型组、阳性对照组(秋水仙碱0.1 mg/kg)和TPME低、中、高剂量组(250、500、
1 000 mg/kg),每组10只。除正常组外,其余各组小鼠均腹腔注射20%CCl4橄榄油溶液诱导肝纤维化,每周2次,连续8周。从造
模的第5周起,各给药组小鼠灌胃相应药液,正常组和模型组小鼠灌胃等体积生理盐水,每天1次,连续4周。末次给药12 h后,称
定各组小鼠肝脏质量并计算肝指数,检测血清中丙氨酸转氨酶(ALT)、天冬氨酸转氨酶(AST)、超氧化物歧化酶(SOD)活性和丙
二醛(MDA)、Ⅲ型前胶原(PC-Ⅲ)、Ⅳ型胶原(C-Ⅳ)、层粘连蛋白(LN)、肿瘤坏死因子α(TNF-α)、白细胞介素6(IL-6)含量;采用
Western blot 法检测肝组织中α-平滑肌肌动蛋白(α-SMA)、转化生长因子β 1 (TGF-β 1 )和 Smad3 蛋白的表达水平;以苏木精-伊红
(HE)、Masson染色后观察肝组织病理变化。结果:与正常组比较,模型组小鼠肝指数和血清中ALT、AST活性以及MDA、PC-Ⅲ、
C-Ⅳ、LN、TNF-α、IL-6含量均显著升高,SOD活性显著降低(P<0.01),肝组织中α-SMA、TGF-β 1和Smad3蛋白的表达水平均显著
升高(P<0.01),镜下可见肝组织出现明显的纤维化病变。与模型组比较,阳性对照组和 TPME 各剂量组小鼠肝指数和血清中
ALT、AST 活性以及 MDA、PC-Ⅲ、C-Ⅳ、LN、TNF-α、IL-6 含量均显著降低,SOD 活性均显著升高(P<0.05 或 P<0.01),肝组织中
α-SMA、TGF-β 1和 Smad3 蛋白的表达水平均显著降低(P<0.05 或 P<0.01),镜下可见肝纤维化病变均有不同程度的改善。与
TPME 低剂量组比较,TPME 高剂量组小鼠血清中 PC-Ⅲ、LN、IL-6 含量和肝组织中 TGF-β 1、Smad3 蛋白的表达水平均显著降低
(P<0.05)。结论:TPME对CCl4诱导的小鼠肝纤维化具有一定的改善作用,该作用可能与抑制胶原合成、抑制氧化应激反应、降
低炎症因子含量、下调α-SMA和TGF-β1/Smad信号通路相关蛋白的表达有关。
关键词 黄水枝;肝纤维化;炎症反应;氧化应激;转化生长因子β1/Smad信号通路;小鼠
Preliminary Study on Improvement Effect of Tiarella polyphylla Ethanol Extract on CCl4-induced Hepatic
Fibrosis in Mice and Its Mechanism
HUANG Fujing ,ZHANG Jinjuan ,DONG Li ,LI Diao ,ZHANG Chunlei ,LIAO Shanggao ,HE Xun(1. School
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of Pharmacy,Guizhou Medical University,Guiyang 550025,China;2. School of Basic Medicine,Guizhou
Medical University,Guiyang 550025,China)
ABSTRACT OBJECTIVE:To investigate the improvement effect of Tiarella polyphylla ethanol extract(TPME)on CCl4-induced
hepatic fibrosis in mice,and to explore its possible mechanism preliminarily. METHODS:Totally 60 male Kunming mice were
randomly divided into normal group,model group,positive control group(colchicine 0.1 mg/kg),TPME low-dose,medium-dose
and high-dose groups(250,500,1 000 mg/kg)according to body weight,with 10 mice in each group. Except for normal group,
other groups were given 20% CCl4 olive oil solution intraperitoneally to induce hepatic fibrosis,twice a week,for consecutive 8
weeks. From the fifth week after modeling,administration groups were given relevant medicine intragastrically,normal group and
model group were given constant volume of normal saline intragastrically,once a day,for consecutive 4 weeks. Twelve hours after
last administration,the liver weight of mice in each group was measured and the liver index was calculated. The serum contents of
ALT,AST,SOD,MDA,PC-Ⅲ,C-Ⅳ,LN,TNF-α and IL-6 were determined. Western blot assay was used to detect the protein
expression of α-SMA,TGF-β 1 and Smad3 in liver tissue. HE and Masson staining were used to observe the pathological changes of
hepatic tissue. RESULTS:Compared with normal group,the liver index,the activities of ALT and AST and the contents of MDA,
LN,PC- Ⅲ ,C- Ⅳ ,LN,TNF-α and IL-6 in serum were
Δ 基金项目:国家自然科学基金资助项目(No.U1812403);贵州
increased significantly, while the activity of SOD was
省高层次创新型人才“百层次人才”项目(No.黔科合平台人才〔2020〕
decreased significantly in model group(P<0.01);the protein
6011)
*硕士研究生。研究方向:中药物质基础及作用机制。E-mail: expression of α-SMA,TGF-β 1 and Smad3 in liver tissues were
hfjsznd8@126.com increased significantly (P<0.01). Obvious fibrosis lesions
# 通信作者:教授,硕士生导师,硕士。研究方向:中药新药研 was observed in liver tissue. Compared with model group,the
发、物质基础及质量控制。E-mail:2812878586@qq.com live indexes,the activities of ALT and AST,the contents of
中国药房 2021年第32卷第14期 China Pharmacy 2021 Vol. 32 No. 14 ·1685 ·