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短刺法对兔膝骨关节炎软骨细胞Sox9、VEGF和ColⅩ表达的影响

摘要:目的 观察短刺法对兔膝骨关节炎(KOA)关节软骨细胞 Y 染色体的性别决定区域(Sox9)、血管内皮细胞生长因子(VEGF)和Ⅹ型胶原(ColⅩ)表达的影响,探讨短刺治疗KOA的作用机制。方法 40只新西兰兔利用随机对照表随机分为正常组(N组)10只、造模组30只,对造模组行Hulth手术法复制膝骨关节炎模型,X线评估造模情况,造模成功后随机分为对照组(M组)、短刺组(CN组)和普通针刺组(NTN组),术后6周开始治疗,M组不予任何处理,CN组和NTN组取左膝关节单侧足三里、内外膝眼、梁丘和阴陵泉穴,留针20 min,1次/d,一疗程5 d,共4个疗程,分别在治疗前和治疗结束后随机选取各组新西兰兔观察其行为学改变;实验结束后观察软骨大体形态及组织学评分;Westem-Blot法检测Sox9和ColⅩ蛋白的表达;免疫组化检测VEGF和ColⅩ蛋白的表达;RT-PCR检测Sox9和VEGFmRNA的表达。结果 M、CN、NTN组在治疗前和治疗结束后兔行为学及软骨大体观察发生明显改变;HE染色显示CN组和NTN组软骨组织损伤减轻,有修复趋势;N组、M组、CN组和NTN组软骨Mankin评分差异均有统计学意义(P<0.01);CN组和NTN组较M组Sox9蛋白和mRNA表达升高、VEFG蛋白和mRNA表达降低、ColⅩ蛋白表达降低(P<0.01);CN组和NTN组差异有统计学意义(P<0.01)。结论 短刺法能有效治疗KOA,其作用机制可能是提高软骨细胞 Sox9的含量,降低VEGF和ColⅩ的表达,抑制肥大细胞分化,从而维持软骨细胞的正常表型,使软骨得到修复。

英文摘要:Objective To investigate the relationship between polymorphisms of surfactant protein D (rs3088308 and rs721917) and the susceptibility to silicosis. Methods This case-control study included 125 silicosis patients and 125 individuals exposed to industrial dust but without silicosis (control group), who were strictly matched with the case group for age, gender, work type and cumulative length of dust exposure. The rs3088308 and rs721917 polymorphisms of surfactant protein-D were detected in all the participants using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). Results The frequencies of T/T, T/A and A/A genotypes of surfactant protein-D rs3088308 locus were 22.2%, 71.2% and 5.6% in the case group, significantly different from the frequencies of 17.6%, 58.4% and 24.0% in the control group, respectively (P0.05). Conclusion Surfactant protein-D rs3088308 polymorphism is significantly associated with silicosis, and the T allele may be a risk factor for silicosis in individuals exposed to industrial dust.

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[V1] 2017-12-27 12:40:28 chinaXiv:201712.00908V1 下载全文
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