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原花青素对兔激素性股骨头坏死的改善作用及机制研究
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                 1*
          吴春立 ,刘利婷 ,赵旭婷 ,孙瑞芬 ,王文选 (1.内蒙古医科大学第二附属医院血管外科,呼和浩特 010010;
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          2.内蒙古医科大学第二附属医院骨科,呼和浩特 010010;3.内蒙古医科大学第二附属医院创伤外科中心A区,
          呼和浩特 010010)
          中图分类号  R966;R681.8      文献标志码  A      文章编号  1001-0408(2025)20-2519-06
          DOI  10.6039/j.issn.1001-0408.2025.20.06

          摘  要  目的  基于受体相互作用蛋白激酶 1(RIPK1)/RIPK3/混合谱系激酶结构域样蛋白(MLKL)信号通路,研究原花青素
         (PACs)对兔激素性股骨头坏死(SONFH)的改善作用及机制。方法  采用注射大肠杆菌内毒素+甲泼尼龙的方法复制SONFH模型
          兔。将造模成功的兔随机分为模型组(Model 组,生理盐水)、PACs 低剂量组(PACs-L 组,11 mg/kg)、PACs 高剂量组(PACs-H 组,
          22 mg/kg)、PACs 高剂量+RIPK1 激活剂(RIPK1 重组蛋白,简称“rRIPK1”)组(PACs-H+rRIPK1 组,22 mg/kg PACs+4 μg/kg
          rRIPK1),另设置对照组(Control组,生理盐水),每组6只。各药物组兔每天灌胃/注射相应药液1次,持续干预4周。末次给药后,
          检测兔血清中肿瘤坏死因子α(TNF-α)、白细胞介素6(IL-6)含量;检测兔股骨微结构[骨密度(BMD)、骨小梁厚度(Tb.Th)、骨小梁
          数(Tb.N)和骨小梁分离度(Tb.Sp)]变化;观察兔股骨组织的病理学形态;检测兔股骨组织细胞凋亡情况;检测兔股骨组织中血管
          内皮生长因子(VEGF)、骨形态发生蛋白2(BMP2)mRNA的表达水平;检测兔股骨组织中RIPK1/RIPK3/MLKL信号通路相关蛋白
          的表达水平。结果  与 Control 组比较,Model 组兔血清中 TNF-α、IL-6 含量和 Tb.Sp、空骨陷窝率、细胞凋亡率以及股骨组织中
          RIPK1、RIPK3、MLKL蛋白的磷酸化水平均显著升高(P<0.05);BMD、Tb.Th、Tb.N,股骨组织中VEGF、BMP2 mRNA的表达水平
          以及胱天蛋白酶 8(caspase-8)的表达水平均显著降低(P<0.05);股骨组织中骨细胞分布不均,骨小梁排列稀疏。与 Model 组比
          较,PACs 各剂量组上述定量指标(P<0.05)和病理变化均显著改善。与 PACs-H 组比较,PACs-H+rRIPK1 组上述定量指标(P<
          0.05)和病理变化均显著逆转。结论  PACs可改善兔SONFH,其作用机制可能与抑制RIPK1/RIPK3/MLKL信号通路激活、抑制股
          骨组织细胞凋亡、促进血管新生有关。
          关键词  原花青素;激素性股骨头坏死;RIPK1/RIPK3/MLKL信号通路;血管新生

          Study on the improvement effects and mechanism of proanthocyanidins on steroid-induced osteonecrosis of
          the femoral head in rabbits
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          WU Chunli ,LIU Liting ,ZHAO Xuting ,SUN Ruifen ,WANG Wenxuan(1.  Dept.  of  Vascular  Surgery,  the
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          Second  Affiliated  Hospital  of  Inner  Mongolia  Medical  University,  Hohhot  010010,  China;2.  Dept.  of
          Orthopedics,  the  Second  Affiliated  Hospital  of  Inner  Mongolia  Medical  University,  Hohhot  010010,  China;
          3. Area A,  Trauma  Surgery  Center,  the  Second Affiliated  Hospital  of  Inner  Mongolia  Medical  University,
          Hohhot 010010, China)
          ABSTRACT   OBJECTIVE  To  study  the  improvement  effects  and  mechanism  of  proanthocyanidins (PACs)  on  steroid-induced
          osteonecrosis  of  the  femoral  head (SONFH)  in  rabbits  based  on  the  receptor-interacting  protein  kinase  1 (RIPK1)/RIPK3/mixed
          lineage  kinase  domain-like  protein (MLKL)  signaling  pathway.  METHODS  SONFH  model  in  rabbits  was  induced  by  injecting
          Escherichia coli endotoxin+methylprednisolone. The successfully modeled rabbits were randomly divided into Model group (normal
          saline), low-dose PACs group (PACs-L group, 11 mg/kg), high-dose PACs group (PACs-H group, 22 mg/kg), high-dose PACs+
          RIPK1 activator (rRIPK1) group (PACs-H+rRIPK1 group, 22 mg/kg PACs+4 μg/kg rRIPK1), along with a control group (normal
          saline),  with  6  rabbits  in  each  group.  Each  administration  group  was  given  relevant  medicine  once  a  day  intragastrically/via
          injection,  for  4  consecutive  weeks. After  the  last  administration,  the  levels  of  tumor  necrosis  factor-α (TNF-α)  and  interleukin-6
         (IL-6) in rabbit serum were measured. The changes in the microstructure of rabbit femurs, including bone mineral density (BMD),
                                                             trabecular  thickness (Tb.Th),  trabecular  number (Tb.N),  and
             Δ 基金项目 内蒙古自治区自然科学基金项目(No.2021LHMS08-
                                                             trabecular   separation  (Tb. Sp)   were   examined.   The
          048,No.2022QN08004)
             *第一作者 副主任医师,硕士。研究方向:骨与关节疾病的基础                   histopathological  features  of  rabbit  femoral  tissues  were
          与临床研究。E-mail:hplzzr@163.com                        observed,  and  the  apoptotic  status  of  cells  within  the  rabbit
             # 通信作者 副主任医师,硕士。研究方向:激素性股骨头坏死的                  femoral  tissues  was  detected.  The  mRNA  expressions  of
          基础及临床研究。E-mail:aiaaym@163.com                      vascular  endothelial  growth  factor  (VEGF)  and  bone


          中国药房  2025年第36卷第20期                                              China Pharmacy  2025 Vol. 36  No. 20    · 2519 ·
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