中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (32): 5097-5103.doi: 10.3969/j.issn.2095-4344.0548

• 骨组织构建 bone tissue construction • 上一篇    下一篇

普伐他汀能否降低早期兔激素诱导性股骨头坏死发生的风险

王小龙1,韩超前1,赵晓娜2,赵建民3,刘  玉3   

  1. 1内蒙古医科大学第二附属医院手足显微外科,内蒙古自治区呼和浩特市  010030;内蒙古医科大学附属医院,2儿科,3骨科,内蒙古自治区呼和浩特市  010050
  • 收稿日期:2018-06-20 出版日期:2018-11-18 发布日期:2018-11-18
  • 通讯作者: 通讯作者:赵建民,博士,主任医师,教授,内蒙古医科大学附属医院骨科,内蒙古自治区呼和浩特市 010050
  • 作者简介:王小龙,男,1988年生,内蒙古自治区呼和浩特市人,汉族,2015年内蒙古医科大学毕业,硕士,主治医师,主要从事手足显微外科、骨关节外科的临床和基础研究。 并列第一作者:韩超前,男,1987年生,内蒙古自治区呼和浩特市人,汉族,2011年内蒙古医科大学毕业,硕士,主治医师,主要从事手足显微外科、骨关节外科的临床和基础研究。
  • 基金资助:

    国家自然科学基金(81360224)

Can pravastatin reduce the risk of early stage of steroid-induced avascular necrosis of the femoral head?

Wang Xiao-long1, Han Chao-qian1, Zhao Xiao-na2, Zhao Jian-min3, Liu Yu3   

  1. 1Department of Hand and Foot Surgery, the Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010030, Inner Mongolia Autonomous Region, China; 2Department of Pediatrics, 3Department of Orthopedics, the Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010050, Inner Mongolia Autonomous Region, China
  • Received:2018-06-20 Online:2018-11-18 Published:2018-11-18
  • Contact: Zhao Jian-min, MD, Chief physician, Professor, Department of Orthopedics, the Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010050, Inner Mongolia Autonomous Region, China
  • About author:Wang Xiao-long, Master, Attending physician, Department of Hand and Foot Surgery, the Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010030, Inner Mongolia Autonomous Region, China Han Chao-qian, Master, Attending physician, Department of Hand and Foot Surgery, the Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010030, Inner Mongolia Autonomous Region, China Wang Xiao-long and Han Chao-qian contributed equally to this work.
  • Supported by:

    the National Natural Science Foundation of China, No. 81360224

摘要:

文章快速阅读:

文题释义:
普伐他汀:是他汀类中惟一具有亲水性的药物,其不仅具有调节脂肪代谢和促进成骨的作用,而且还有血浆半衰期短、全身不良反应少、蛋白结合率低等优点,可与多种蛋白结合率高的药物联合应用,是临床上应用最广泛的药物。
激素诱导性股骨头坏死:股骨头坏死又称股骨头无菌性坏死,或股骨头缺血性坏死,是由于多种原因导致的股骨头局部血运不良,从而引起骨细胞进一步缺血、坏死、骨小梁断裂、股骨头塌陷的一种病变。激素性股骨头坏死就是因为长时间使用激素而引起的一种股骨头坏死。
摘要
背景
:研究表明脂质代谢和凝血紊乱以及细胞凋亡与激素性股骨头坏死的发病机制密切相关,而部分研究显示普伐他汀具有降脂、抗凝以及干预骨细胞凋亡的作用。
目的:探讨普伐他汀能否降低早期兔激素诱导性股骨头坏死发生的风险,是否可作为兔激素诱导性股骨头坏死的早期靶向干预药物。
方法:将60只新西兰雄性兔随机分为3组,模型组和干预组各24只,对照组12只。模型组采用激素联合马血清的方法准备激素性股骨头坏死模型,干预组在模型组的基础上给予普伐他汀治疗,对照组注射等量生理盐水,分别于造模第2、4、6周行血脂、凝血指标检测以及MRI检查,随后处死动物,在光镜下观察组织病理学改变,并计算空骨陷窝率,应用TUNEL法检测骨细胞凋亡,并计算凋亡指数。
结果与结论:①干预组的大体标本和MRI表现与模型组相比,各周坏死程度相仿,无明显差别;②干预组在第2,4周的胆固醇、三酰甘油及低密度脂蛋白水平高于对照组(P < 0.05),干预组在第6周的胆固醇、三酰甘油及低密度脂蛋白水平明显低于模型组(P < 0.05),但与对照组相比无明显差异(P > 0.05);③各组间不同时间点凝血酶原时间及组织纤维溶酶原激活物水平均无显著性差异(P > 0.05);④病理组织学显示,干预组骨髓腔内脂肪细胞数、空骨陷窝数较模型组少,骨小梁稀疏程度相对较轻。干预组第2,4周的空骨陷窝率高于对照组(P < 0.05),在第6周时,与对照组相比无明显差异(P > 0.05),但显著低于模型组(P < 0.05);⑤干预组各时间点的凋亡指数显著高于对照组(P < 0.05),但与模型组相比,无显著差异(P > 0.05);⑥结果显示,普伐他汀不能降低早期兔激素诱导性股骨头坏死发生的风险,尚不能作为兔激素诱导性股骨头坏死早期的有效靶向干预药物。

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程
ORCID: 0000-0002-9376-4653(王小龙)

关键词: 激素性股骨头坏死, 细胞凋亡, 普伐他汀, 早期, 凋亡指数, 空骨陷窝率, 靶向治疗, 国家自然科学基金

Abstract:

BACKGROUND: Lipid metabolism and coagulation disorders as well as cell apoptosis have been shown to be closely related to the pathogenesis of steroid-induced avascular necrosis of the femoral head (SANFH). Meanwhile, pravastatin has been reported partially to exhibit the effects of lipid-lowering, anticoagulation and interfering the osteocyte apoptosis.
OBJECTIVE: To investigate whether pravastatin can reduce the incidence of the early stage of SANFH in rabbits, and whether it can be used as an effective target for early intervention of SIFHN.
METHODS: Sixty male New Zealand rabbits were randomly divided into three groups: model group (n=24, early stage of SANFH), intervention group (n=24, early stage of SANFH treated with pravastatin) and control group (n=12, treated with same volume of normal saline). The rabbit model of early stage of SANFH was established by injection of hormone combined with horse serum. All the rabbits were examined for serum lipids and coagulation indicators and underwent MRI examination at 2, 4 and 6 weeks after modeling. The rabbits were sacrificed for histopathological observation under light microscope. The ratio of empty lacuna was calculated, apoptosis of osteocytes was determined by TUNEL assay, and apoptotic index was calculated.
RESULTS AND CONCLUSION: Compared with the model group, the necrotic degree in the intervention group was similar in the gross specimens and MRI performance, and there was no significant difference. The levels of cholesterol, triglyceride and low density lipoprotein in the intervention group were significantly higher than those in the control group at 2 and 4 weeks after modeling (P < 0.05). There was insignificant difference in all above levels between intervention and control groups at 6 weeks after modeling (P > 0.05), but the levels in the intervention group were significantly lower than those in the model group (P < 0.05). There were no significant differences in the prothrombin time, and tissue plasminogen activator levels among groups at different time points after modeling (P > 0.05). Histopathological results revealed that the number of adipocytes and empty lacuna in the bone marrow cavity of the intervention group was less than that in the model group, and the sparse degree of trabecular bone was relatively mild. The ratio of empty lacuna in the intervention group was significantly higher than that in the control group at 2 and 4 weeks after modeling (P < 0.05). The ratio of empty lacuna in the intervention group was significantly lower than that in the model group at 6 weeks after modeling (P < 0.05), but had no significant difference from that in the control group (P > 0.05). The apoptotic index in the intervention group was significantly higher than that in the control group at different time points after modeling (P < 0.05), but there was no significant difference between intervention and model groups (P > 0.05). To conclude, pravastatin cannot reduce the risk of early SANFH, and cannot be used as an effective target for early intervention of SANFH.

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程

Key words: Femoral Head Necrosis, Glucocorticoids, Apoptosis, Models, Animal, Tissue Engineering

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