维骨力预防骨关节炎软骨退变的实验研究

目的:观察维骨力(viartrils)对兔实验性早中期骨关节炎(OA)病变发生发展是否有预防作用及其对OA软骨细胞增殖的影响。方法:24只新西兰兔用切断膝关节前、后交叉韧带的方法复制兔OA模型,随机分为对照组和实验组各12只,实验组术后即加服维骨力(主要成份为硫酸氨基葡萄糖)每天2粒,对照组常规饲养。术后第10周处死动物,取股骨髁负重面软骨标本进行HE、safranin’O/fast green组织化学染色及骨关节炎评分、分级,采用免疫组化方法观察软骨细胞增殖状况。结果:切断兔前后交叉韧带成功复制出OA早、中期模型,第10周时实验组(维骨力组)骨关节炎病理评分显著低于对照组(P<0.05),软骨细胞增殖指数显著高于对照组(P<0.05)。结论:维骨力对兔膝骨关节炎软骨细胞有刺激增殖的作用,可以较好地预防OA的发生发展。

Preventive effect of viartrils on the cartilage degeneration of osteoarthritis in rabbits

AIM: To determine whether the viartrils could provide a beneficial effect on the prevention of early/middle stage osteoarthritis(OA) and affect the proliferation of chondrocytes. METHODS: An OA model was produced with severing the anterior, posterior cruciate ligaments of the knee in 24 adult New Zealand rabbits. The animals were then randomly divided into viartrils group and control group. After surgical operation, viartrils (mainly contains glucosamine sulphate) 2 pills per day were administered to the animals in viartrils group. The animals were sacrificed and specimens were taken from the weight-bearing portion of the femoral condylar seven weeks after operation. Each case was evaluated according to a modified histological-histochemical grading system(HHGS) using HE and safranin O/fast green staining slides, and immunohistochemical method was used to detect the proliferation of chondrocytes in articular cartilage. RESULTS: The method of severing the anerior, posterior cruciate ligaments of the knee could successfully induce the early/middle stage model of OA. The pathological remark in control group was significantly higher than that in the viartrils group (P<0 05). The proliferative index of viartrils group chondrocytes was also higher than that in control (P<0 05). CONCLUSION: These data indicate that viartrils could increase the proliferation of chondrocytes and prevent the development of OA pathologic process.