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仙鹤草不同提取部位抗肝纤维化作用的研究                                                 Δ


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        李 麟 ,饶春燕 ,雷青松 ,黄 祎 ,刘华宝 ,张长江 (1.重庆市中医院肝病科,重庆 400021;2.重庆大学附
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        属肿瘤医院肿瘤放射治疗中心,重庆 400030)
        中图分类号 R285.5         文献标志码 A           文章编号 1001-0408(2022)03-0313-06
        DOI  10.6039/j.issn.1001-0408.2022.03.10
        摘   要  目的 研究仙鹤草不同提取部位的抗肝纤维化作用。方法 以大鼠肝星状细胞 HSC-T6 为研究对象,检测不同质量浓度
       (0.5、5、50、500、5 000 μg/mL,均以生药量计)的仙鹤草不同提取部位(总提取物、乙酸乙酯部位、石油醚部位和正丁醇部位)对该细
        胞增殖的影响(作用24、48、72 h后),并计算半数抑制浓度(IC50 )。采用血小板衍生生长因子(PDGF-BB)刺激HSC-T6细胞以复制
        肝纤维化细胞模型,采用流式细胞仪检测仙鹤草不同提取部位对HSC-T6细胞凋亡的影响,采用酶联免疫吸附试验检测细胞培养
        上清液中Ⅰ型胶原蛋白(Col-Ⅰ)表达水平,采用 Western blot 法检测细胞中α-平滑肌肌动蛋白(α-SMA)、Col-Ⅰ、B 细胞淋巴瘤 2
       (Bcl-2)、Bcl-2相关X蛋白(Bax)、胱天蛋白酶3(caspase-3)的表达水平。结果 仙鹤草总提取物、乙酸乙酯部位、石油醚部位和正丁
        醇部位均可显著升高 HSC-T6 细胞凋亡率(P<0.01);作用 24 h 时,上述各部位的 IC50分别为 50.17、20.75、5.82、4.09 μg/mL。经
        PDGF-BB 干预后,HSC-T6 细胞培养上清液中 Col-Ⅰ和细胞中 Col-Ⅰ、α-SMA、Bcl-2、Bax、caspase-3 蛋白表达水平均显著升高
       (P<0.01);经仙鹤草不同提取部位干预后,HSC-T6细胞培养上清液或细胞中上述蛋白表达水平大部分均较PDGF-BB组显著逆
        转(P<0.05或P<0.01),其中仙鹤草正丁醇部位干预作用最为显著。结论 仙鹤草不同提取部位均可抑制HSC-T6细胞增殖,并诱
        导其凋亡;正丁醇部位可能是仙鹤草发挥抗肝纤维化作用的有效部位。
        关键词 仙鹤草;肝纤维化;细胞凋亡;有效部位

        Study on the different extraction fractions of Agrimonia pilosa against hepatic fibrosis
        LI Lin ,RAO Chunyan ,LEI Qingsong ,HUANG Yi ,LIU Huabao ,ZHANG Changjiang(1. Dept. of Hepatic
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        Diseases,Chongqing Traditional Chinese Medicine Hospital,Chongqing 400021,China;2. Oncology Radiotherapy
        Center,Chongqing University Cancer Hospital,Chongqing 400030,China)
        ABSTRACT   OBJECTIVE To study different extraction fractions of Agrimonia pilosa against hepatic fibrosis. METHODS Using
        hepatic stellate cells HSC-T6 of rats as objects,the effects of different extraction fractions(total extract,ethyl acetate fraction,
        petroleum ether fraction and n-butanol fraction)with different concentrations(0.5,5,50,500,5 000 μg/mL,calculated by raw
        drug) of A. pilosa on the proliferation of HSC-T6 cells were detected (after treated for 24,48,72 h);median inhibition
        concentration(IC50 )was also caculated. Platelet-derived growth factor(PDGF-BB)was used to induce the activation of HSC-T6
        cells to establish hepatic fibrosis cell model. Flow cytometry was used to detect the effects of different extraction fractions of A.
        pilosa on apoptosis of HSC-T6 cells. The expression of collagen Ⅰ(Col-Ⅰ)in the supernatant was detected by enzyme linked
        immunosorbent assay. The expressions of α-smooth muscle actin(α-SMA),Col-Ⅰ,B-cell lymphoma-2(Bcl-2),Bcl-2-associated
        X protein(Bax)and caspase-3 were detected by Western blot assay. RESULTS Total extract,ethyl acetate fraction,petroleum
        ether fraction and n-butanol fraction of A. pilosa could significantly increase the apoptotic rate of HSC-T6 cells(P<0.01). After
        treated for 24 h,IC50 of above fractions were 50.17,20.75,5.82,4.09 μg/mL,respectively. After intervened with PDGF-BB,the
        expression of Col-Ⅰ in supernatant of HSC-T6 cells as well as protein expression of Col-Ⅰ,α-SMA,Bcl-2,Bax and caspase-3 in
        HSC-T6 cells were increased significantly(P<0.01). After intervened with different extraction fractions of A. pilosa,most of the
        expressions of above proteins in HSC-T6 cell culture supernatant or cells were significantly reversed compared with PDGF-BB
        group (P<0.05 or P<0.01), and the intervention effect of n-butanol fraction of A. pilosa was the most significant.
        CONCLUSIONS Different extraction fractions of A. pilosa can inhibite the proliferation of HSC-T6 cells and induce their
        apoptosis;n-butanol fraction from A. pilosa may be an effective fraction to exert the effect of anti-hepatic fibrosis.
                                                           KEYWORDS      Agrimonia pilosa; hepatic fibrosis; cell
            Δ 基金项目:重庆市自然科学基金面上项目(No.cstc2019jcyj-
                                                           apoptosis;effective fraction
        msxmX0049);重 庆 市 技 术 创 新 与 应 用 发 展 专 项 重 点 项 目(No.
        cstc2019jscx-dxwtBX0023);重庆市科研机构绩效激励引导专项(No.
        jxyn2020-4)                                            肝纤维化是指由各种致病因子所致肝内结缔组织
           *主治医师,博士。研究方向:中医药防治慢性肝病。E-mail:
                                                           异常增生,导致肝内弥漫性细胞外基质过度沉淀的病理
        lilin515626@126.com
                                                           过程,表现为肝功能减退、门静脉高压等,可导致肝硬
           # 通信作者:副主任医师,硕士。研究方向:中医药防治慢性肝
                                                                             [1]
        病。电话:023-67667190。E-mail:changjiang78@163.com      化、肝癌等严重后果 。目前,肝纤维化的治疗策略主要

        中国药房    2022年第33卷第3期                                               China Pharmacy 2022 Vol. 33 No. 3  ·313 ·
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