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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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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 ·

