摘要
目的探讨Hedgehog(Hh)信号通路对氟中毒大鼠软骨损害的影响。方法选健康大鼠60只,依据随机数表法分为对照组(自来水)、低氟组(10 mg/L氟化钠溶液)、高氟组(50 mg/L氟化钠溶液),记录不同染氟强度下大鼠软骨细胞活性与凋亡率,比较3组软骨细胞中音速刺猬蛋白(Shh)、印度刺猬蛋白(Ihh)、跨膜蛋白(Smo)、跨膜蛋白受体(Ptch1)、核转录因子蛋白(Gli1、Gli2、Gli3 mRNA)及蛋白表达水平。结果对照组、低氟组、高氟组大鼠软骨细胞活性分别为(100.00±0.00)%、(116.48±10.27)%、(76.25±11.38)%,细胞凋亡率分别为(4.15±0.78)%、(3.02±0.71)%、(9.58±1.14)%。对照组、低氟组、高氟组大鼠软骨细胞Shh、Ihh、Smo、Gli1、Gli2 mRNA表达及Shh、Ihh、Smo、Ptch1、Gli1、Gli2蛋白表达水平依次升高,Gli3 mRNA表达水平逐渐降低(P<0.05),Ptch1 mRNA表达、Gli3蛋白表达在低氟组有所降低,在高氟组略有升高,但差异无统计学意义(P>0.05)。结论氟中毒主要通过Hh信号通路损伤大鼠软骨细胞活性和凋亡,Shh、Ihh、Smo、Ptch1、Gli1、Gli2、Gli3等均参与软骨损伤的活动过程。
Objective To investigate the effect of Hedgehog( Hh) signaling pathway on cartilage damage in rats with fluorosis.Methods Sixty healthy wistar rats were selected and divided into control group( tap water),low fluorine group( 10 mg / L sodium fluoride solution),high fluorine group( 50 mg / L sodium fluoride solution) basing on random number table method,rats cartilage cell activity and apoptosis rate were recorded in different strength of fluoride poison,Chondrocytes Alto speed hedgehog protein( Shh) and Indian hedgehog( IHH),a transmembrane protein( SMO),transmembrane protein receptor( PTCH1),nuclear transcription factor protein Gli1,Gli2 and Gli3 mRNA and protein expression levels of the three groups were compared. Results The activity of chondrocytes in the control group, low fluoride group and high fluoride group were( 100 + 0) %,( 116. 48 10. 27) % and( 76. 25 11. 38) % respectively,the apoptosis rate was( 4. 15 + 0. 78) %,( 3. 02 0. 71) %,( 9. 58 1.14) % respectively. The cartilage expression of Shh,Ihh,Smo,Gli1,Gli2 mRNA and protein expression of Shh,Ihh,Smo,Ptch1,Gli1,Gli2 in control,low fluorosis and high fluorosis group increased in turn but Gli3 mRNA was gradually decreased( P 〈 0. 05). The expression of Ptch1 mRNA and Gli3 protein decreased in low fluorois group but increased in high fluorosis( P 〉 0. 05). Conclusion Shh,Ihh,Smo,Ptch1,Gli1,Gli2,Gli3,and Hh were involved in the activity of cartilage injury in rats.
出处
《中国地方病防治》
CAS
北大核心
2016年第1期25-27,共3页
Chinese Journal of Control of Endemic Diseases
基金
河南省卫生职业教育教学改革立项项目
项目编号wjlx2014125
关键词
Hh信号通路
氟中毒
软骨损害
Hh signaling pathway
Fluorosis
Cartilage damage