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基于 OPG/RANKL 信号通路探讨姜黄素对去势骨质疏松模型大

        鼠骨代谢平衡的影响                       Δ


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        张庆刚 ,张庆红 ,张克民 ,姚 明 ,田月洋 ,毛小莉 ,冯宜蒀 ,王 卉(1.滨州市中心医院药剂科,山东 滨州
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        251700;2.滨州市中心医院骨外科,山东 滨州 251700;3.华中科技大学同济医学院附属武汉中心医院检验科,
        武汉 430014;4.甘肃中医药大学附属医院关节外科,兰州 730020)
        中图分类号 R683;R285          文献标志码 A          文章编号     1001-0408(2020)17-2119-06
        DOI  10.6039/j.issn.1001-0408.2020.17.13
        摘  要   目的:探讨姜黄素对去势骨质疏松模型大鼠骨代谢平衡的影响,并探讨其可能机制。方法:将雌性Wistar大鼠随机分为
        空白组(A组)、模型组(B组)、雌二醇组[C组(阳性对照),戊酸雌二醇50 μg/(kg·d)]和姜黄素低、中、高剂量组[D~F组,55、110、
        165 μg/(kg·d)],每组15只。除A组外,其余各组均采用去卵巢法建立去势骨质疏松模型。造模后,A、B组大鼠均灌胃生理盐水,
        各给药组灌胃相应药物,体积均为30 mL/kg,每日1次,连续12周。采用酶联免疫吸附测定法检测各组大鼠血清骨代谢标志物[骨
        特异性碱性磷酸酶、核心结合因子α1、Ⅰ型胶原交联羧基末端肽、Ⅰ型前胶原氨基端前肽、骨钙素]含量,采用实验动物微型CT影
        像系统检测大鼠骨密度(BMD)和骨小梁结构参数[相对骨体积分数(BV/TV)、骨小梁数量(Tb.N)、骨小梁厚度(Tb.Th)、连接密度
       (Conn.D)、骨小梁分离度(Tb.Sp)、结构模型指数(SMI)],采用逆转录聚合酶链式反应法和Western blotting法分别检测下丘脑和股
        骨组织中骨保护素(OPG)和核因子κB受体活化因子配体(RANKL)mRNA及蛋白的表达情况。结果:与A组比较,B组大鼠血清
        骨代谢标志物含量,BMD 和 BV/TV、Tb.N、Tb.Th、Conn.D 以及 OPG mRNA 及其蛋白的表达量均显著降低,Tb.Sp、SMI 以及
        RANKL mRNA 及其蛋白的表达量均显著升高(P<0.05)。与 B 组比较,各给药组大鼠血清骨代谢标志物含量,BMD 和 BV/TV、
        Tb.N、Tb.Th、Conn.D以及OPG mRNA及其蛋白的表达量均显著升高,Tb.Sp、SMI以及RANKL mRNA及其蛋白的表达量均显著
        降低,且姜黄素各组效果均呈剂量依赖性(P<0.05或P<0.01)。结论:姜黄素能够改善去势骨质疏松模型大鼠的骨代谢水平,增
        加其BMD、改善骨小梁微结构、抑制骨吸收;这种作用可能与调控OPG/RANKL信号通路有关。
        关键词 骨质疏松;姜黄素;骨代谢平衡;骨保护素/核因子κB受体活化因子配体信号通路;大鼠

        Effects of Curcumin on Bone Metabolism Balance in Ovariectomized Osteoporosis Model Rats Based on
        OPG/RANKL Signaling Pathway
        ZHANG Qinggang ,ZHANG Qinghong ,ZHANG Kemin ,YAO Ming ,TIAN Yueyang ,MAO Xiaoli ,FENG
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        Yiyun ,WANG Hui(1. Dept. of Pharmacy,Binzhou Central Hospital,Shandong Binzhou 251700,China;2.
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        Dept. of Orthopedics,Binzhou Central Hospital,Shandong Binzhou 251700,China;3. Dept. of Laboratory
        Medicine,Wuhan Central Hospital,Tongji Medical College Affiliated to Huazhong University of Science and
        Technology,Wuhan 430014,China;4. Dept. of Joint Surgery,the Affiliated Hospital of Gansu University of
        TCM,Lanzhou 730020,China)
        ABSTRACT    OBJECTIVE:To investigate the effects of curcumin on bone metabolism balance in ovariectomized osteoporosis
        model rats,and to investigate its potential mechanism. METHODS:Totally female Wistar rats were randomly divided into blank
        group (group A),model group (group B),estradiol group [group C (positive control),estradiol valerate 50 μ g/(kg·d)],
        curcumin low-dose,medium-dose and high-dose groups [group D-F,55,110,165 μg/(kg·d)],with 15 rats in each group. Except
        for group A,other rats were ovariectomized to establish osteoporosis model. After modeling,group A and B were given normal
        saline intrgastrically,and administration groups were given relevant medicine intrgastrically 30 mL/kg,once a day,for consecutive
        12 weeks. The contents of serum bone metabolism markers [BALP,CBF-α1,CTX-Ⅰ,PINP and OC] were determined by ELISA.
        The bone mineral density(BMD)and trabecular structure indexes [relative bone volume fraction(BV/TV),trabecular number
       (Tb.N),trabecular thickness(Tb.Th),connectivity density(Conn. D),trabecular separation(Tb.Sp)and structure model index
       (SMI)] were determined by micro CT imaging system. The mRNA and protein expression of OPG and RANKL in hypothalamus
        and femur were determined by RT-PCR and Western blotting assay. RESULTS:Compared with group A,the contents of serum
        bone metabolism markers,BMD,BV/TV,Tb.N,Tb.Th,Conn.D,mRNA and protein expression of OPG were decreased
           Δ 基金项目:甘肃省自然科学基金资助项目(No.17JR5RA056)             significantly in group B, while Tb.Sp, SMI, mRNA and
           *副主任药师。研究方向:中药临床药学。E-mail:3314007374            protein expression of RANKL were increased significantly
        @qq.com                                            (P<0.05). Compared with group B,the contents of serum


        中国药房    2020年第31卷第17期                                             China Pharmacy 2020 Vol. 31 No. 17  ·2119 ·
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