透明质酸对体外培养大骨节病软骨细胞增殖与凋亡的影响

目的 通过观察透明质酸(HA)对体外培养的大骨节病(Kashin-Beck disease,KBD)软骨细胞增殖、凋亡的影响,为临床上HA治疗KBD提供实验依据.方法 依据<大骨节病诊断标准>(GB 16003-1995)收集KBD患者和遭遇意外事故的病人(对照组)关节软骨,分离、体外培养关节软骨细胞.选用第2代细胞进行实验.两组软骨细胞分别给予不同剂量的HA,按HA剂量分为0、100、500 mg/L组.通过二苯甲唑溴盐(MTT)实验,测定第2、4、6天HA对KBD组、对照组软骨细胞增殖的影响.并通过流式细胞检测观察HA对软骨细胞凋亡的影响.结果 对照组在第4天时,500 mg/L组(0.140 ±0.049)促软骨细胞增殖作用大于0 mg/L组(0.116±0.021);KBD组在第6天时,500 mg/L组(0.179±0.081)与0 mg/L组(0.128 ±0.017)比较,显示了明显的促增殖作用(P<0.05).KBD组细胞凋亡率100、500 mg/L组(10.458±1.143、7.877±1.346)均较0 mg/L组(12.860±2.159)下降(P<0.05);对照组500 ms/L组(4.045±1.204)较0 mg/L组(7.128±1.244)细胞凋亡率下降(P<0.05).结论 HA对KBD软骨细胞具有促进增殖和抑制软骨细胞凋亡的作用,其中500 mg/L的HA改善KBD软骨细胞代谢的作用较100 mg/L明显.

Effect of hyaluronic acid on proliferation and apoptosis of Kashin-Beck disease chondrocytes cultured in vitro

Objective To understand the effect of hyaluronic acid (HA) on the proliferation and apoptosis of chondrocytes cultured in vitro with Kashin-Beck disease(KBD) to provide the experimental evidences for treating KBD diseases with HA. Methods The articular cartilage samples collected from KBD patients were selected according to Diagnosis for Kaschin-Beck Disease(GB 16003-1995). And the normal cartilage samples were collected from victims of incidence (control). Chandrocytes were separated and cultured in vitro. Then varying dosages of HA were administered to chondrocytes and individed into 0,100,500 mg/L group, according to HA doages. The effect of HA on the proliferation and apoptosis of chondrocytes cultured/n vitro both KBD and the controls were investigated by methyl thiazolyl tetrazolium(MTT), Annexin V/PI staining on 2~(nd), 4~(th), 6~(th) day. Results In the control group, 500 mg/L group(0.140 ± 0.049) promoted chondrocyte proliferation significantly than 0 mg/L group (0.116 ± 0.021 ) at the 4~(th) day(P < 0.05), similar phenomenon was observed in KBD group in the 6~(th) day between 500 and 0 mg/L group(0.179 ± 0.081,0.128 ± 0.017, P< 0.05). In the KBD group, compared with 0 mg/L (12.860 ± 2.159), both 100 and 500 mg/L( 10.458 ± 1.143,7.877 ± 1.346) inhibited chondrocyte apoptosis rate (P < 0.05). In control, apoptosis rate of 500 mg/L group(4.045 ± 1.204) descreased compared with 0 mg/L group (7.128 ± 1.244, P < 0.05). Conclusion HA can promote the proliferation and inhibit the apoptosis of KBD chondrocytes cultured in vitro, and 500 mg/L HA play more effective role than that of 100 mg/L in promoting proliferation and inhibiting poptosis.