SiO2刺激矽肺肺泡巨噬细胞对MMP-9和TIMP-1表达的影响

目的 探讨SiO2对矽肺患者的肺泡巨噬细胞(AM)基质金属蛋白酶-9(MMP-9)及金属蛋白酶组织抑制因子(TIMP)-1表达的影响.方法 收集矽肺患者肺泡AM,体外经SiO2刺激3、6、12、18、24、36 h,分别用明胶酶谱法和免疫细胞化学方法检测AM中TIMP-1、MMP-9蛋白表达和MMP-9活力.结果 实验组AM中6、12、18、24 h MMP-9的蛋白表达增强,在18 h时最高(积分吸光度值为0.386±0.037),与同期对照组相比,差异均有统计学意义(P＜0.05).实验组12、18、24、36h AM中MMP-9活力的表达增强,在24 h最强(吸光度值3.061±0.153),与同期对照组相比,差异均有统计学意义(P＜0.05).实验组与对照组各时间点TIMP-1蛋白表达比较,差异无统计学意义(P＞0.05).结论 体外SiO2刺激矽肺肺泡AM可影响MMP-9蛋白及其活力的表达.     

SiO2刺激矽肺肺泡巨噬细胞对MMP-9和TIMP-1表达的影响

Objective To investigate the effect of SiO2 on the expression of matrix metalloproteinase-9 (MMP-9)and tissue inhibitor of metalloproteinase-1 (TIMP-1)in human silicofic alveolar macrophages (AM).Methods Human alveolar macrophages were collected from a silicotic patient by bronchoalveolar lavage and exposed to silicon dioxide for 3h,6h,12h,18h,24h and 36h.The expression of the MMP-9 in the AM were detected with zymography and immunological method and the expression of the TIMP-1 in the AM with immunological method.Results The expressions of MMP-9 in the AM increased clearly along with the time,reached peak at 24 h when detected with zymography (average optical density:3.061±0.153 vs 2.851±0.164,P＜0.05);and reached peak at 18h when detected with immunological method (average optical density:0.386±0.037 vs 0.322±0.034,P＜0.05).The expression of the TIMP-1 in the AM did not vary when detected with immunological method (P＞0.05).Conclusion SiO2 may affect the expression of MMP-9 and MMP-9 activity in the cultured AM.     

SiO2刺激矽肺肺泡巨噬细胞对MMP-9和TIMP-1表达的影响

Objective To investigate the effect of SiO2 on the expression of matrix metalloproteinase-9 (MMP-9)and tissue inhibitor of metalloproteinase-1 (TIMP-1)in human silicofic alveolar macrophages (AM).Methods Human alveolar macrophages were collected from a silicotic patient by bronchoalveolar lavage and exposed to silicon dioxide for 3h,6h,12h,18h,24h and 36h.The expression of the MMP-9 in the AM were detected with zymography and immunological method and the expression of the TIMP-1 in the AM with immunological method.Results The expressions of MMP-9 in the AM increased clearly along with the time,reached peak at 24 h when detected with zymography (average optical density:3.061±0.153 vs 2.851±0.164,P＜0.05);and reached peak at 18h when detected with immunological method (average optical density:0.386±0.037 vs 0.322±0.034,P＜0.05).The expression of the TIMP-1 in the AM did not vary when detected with immunological method (P＞0.05).Conclusion SiO2 may affect the expression of MMP-9 and MMP-9 activity in the cultured AM.     

SiO2刺激矽肺肺泡巨噬细胞对MMP-9和TIMP-1表达的影响

Objective To investigate the effect of SiO2 on the expression of matrix metalloproteinase-9 (MMP-9)and tissue inhibitor of metalloproteinase-1 (TIMP-1)in human silicofic alveolar macrophages (AM).Methods Human alveolar macrophages were collected from a silicotic patient by bronchoalveolar lavage and exposed to silicon dioxide for 3h,6h,12h,18h,24h and 36h.The expression of the MMP-9 in the AM were detected with zymography and immunological method and the expression of the TIMP-1 in the AM with immunological method.Results The expressions of MMP-9 in the AM increased clearly along with the time,reached peak at 24 h when detected with zymography (average optical density:3.061±0.153 vs 2.851±0.164,P＜0.05);and reached peak at 18h when detected with immunological method (average optical density:0.386±0.037 vs 0.322±0.034,P＜0.05).The expression of the TIMP-1 in the AM did not vary when detected with immunological method (P＞0.05).Conclusion SiO2 may affect the expression of MMP-9 and MMP-9 activity in the cultured AM.     

SiO2刺激矽肺肺泡巨噬细胞对MMP-9和TIMP-1表达的影响

Objective To investigate the effect of SiO2 on the expression of matrix metalloproteinase-9 (MMP-9)and tissue inhibitor of metalloproteinase-1 (TIMP-1)in human silicofic alveolar macrophages (AM).Methods Human alveolar macrophages were collected from a silicotic patient by bronchoalveolar lavage and exposed to silicon dioxide for 3h,6h,12h,18h,24h and 36h.The expression of the MMP-9 in the AM were detected with zymography and immunological method and the expression of the TIMP-1 in the AM with immunological method.Results The expressions of MMP-9 in the AM increased clearly along with the time,reached peak at 24 h when detected with zymography (average optical density:3.061±0.153 vs 2.851±0.164,P＜0.05);and reached peak at 18h when detected with immunological method (average optical density:0.386±0.037 vs 0.322±0.034,P＜0.05).The expression of the TIMP-1 in the AM did not vary when detected with immunological method (P＞0.05).Conclusion SiO2 may affect the expression of MMP-9 and MMP-9 activity in the cultured AM.     

SiO2刺激矽肺肺泡巨噬细胞对MMP-9和TIMP-1表达的影响

Objective To investigate the effect of SiO2 on the expression of matrix metalloproteinase-9 (MMP-9)and tissue inhibitor of metalloproteinase-1 (TIMP-1)in human silicofic alveolar macrophages (AM).Methods Human alveolar macrophages were collected from a silicotic patient by bronchoalveolar lavage and exposed to silicon dioxide for 3h,6h,12h,18h,24h and 36h.The expression of the MMP-9 in the AM were detected with zymography and immunological method and the expression of the TIMP-1 in the AM with immunological method.Results The expressions of MMP-9 in the AM increased clearly along with the time,reached peak at 24 h when detected with zymography (average optical density:3.061±0.153 vs 2.851±0.164,P＜0.05);and reached peak at 18h when detected with immunological method (average optical density:0.386±0.037 vs 0.322±0.034,P＜0.05).The expression of the TIMP-1 in the AM did not vary when detected with immunological method (P＞0.05).Conclusion SiO2 may affect the expression of MMP-9 and MMP-9 activity in the cultured AM.     

SiO2刺激矽肺肺泡巨噬细胞对MMP-9和TIMP-1表达的影响

Objective To investigate the effect of SiO2 on the expression of matrix metalloproteinase-9 (MMP-9)and tissue inhibitor of metalloproteinase-1 (TIMP-1)in human silicofic alveolar macrophages (AM).Methods Human alveolar macrophages were collected from a silicotic patient by bronchoalveolar lavage and exposed to silicon dioxide for 3h,6h,12h,18h,24h and 36h.The expression of the MMP-9 in the AM were detected with zymography and immunological method and the expression of the TIMP-1 in the AM with immunological method.Results The expressions of MMP-9 in the AM increased clearly along with the time,reached peak at 24 h when detected with zymography (average optical density:3.061±0.153 vs 2.851±0.164,P＜0.05);and reached peak at 18h when detected with immunological method (average optical density:0.386±0.037 vs 0.322±0.034,P＜0.05).The expression of the TIMP-1 in the AM did not vary when detected with immunological method (P＞0.05).Conclusion SiO2 may affect the expression of MMP-9 and MMP-9 activity in the cultured AM.     

SiO2刺激矽肺肺泡巨噬细胞对MMP-9和TIMP-1表达的影响

Objective To investigate the effect of SiO2 on the expression of matrix metalloproteinase-9 (MMP-9)and tissue inhibitor of metalloproteinase-1 (TIMP-1)in human silicofic alveolar macrophages (AM).Methods Human alveolar macrophages were collected from a silicotic patient by bronchoalveolar lavage and exposed to silicon dioxide for 3h,6h,12h,18h,24h and 36h.The expression of the MMP-9 in the AM were detected with zymography and immunological method and the expression of the TIMP-1 in the AM with immunological method.Results The expressions of MMP-9 in the AM increased clearly along with the time,reached peak at 24 h when detected with zymography (average optical density:3.061±0.153 vs 2.851±0.164,P＜0.05);and reached peak at 18h when detected with immunological method (average optical density:0.386±0.037 vs 0.322±0.034,P＜0.05).The expression of the TIMP-1 in the AM did not vary when detected with immunological method (P＞0.05).Conclusion SiO2 may affect the expression of MMP-9 and MMP-9 activity in the cultured AM.     

SiO2刺激矽肺肺泡巨噬细胞对MMP-9和TIMP-1表达的影响

Objective To investigate the effect of SiO2 on the expression of matrix metalloproteinase-9 (MMP-9)and tissue inhibitor of metalloproteinase-1 (TIMP-1)in human silicofic alveolar macrophages (AM).Methods Human alveolar macrophages were collected from a silicotic patient by bronchoalveolar lavage and exposed to silicon dioxide for 3h,6h,12h,18h,24h and 36h.The expression of the MMP-9 in the AM were detected with zymography and immunological method and the expression of the TIMP-1 in the AM with immunological method.Results The expressions of MMP-9 in the AM increased clearly along with the time,reached peak at 24 h when detected with zymography (average optical density:3.061±0.153 vs 2.851±0.164,P＜0.05);and reached peak at 18h when detected with immunological method (average optical density:0.386±0.037 vs 0.322±0.034,P＜0.05).The expression of the TIMP-1 in the AM did not vary when detected with immunological method (P＞0.05).Conclusion SiO2 may affect the expression of MMP-9 and MMP-9 activity in the cultured AM.     

SiO2刺激矽肺肺泡巨噬细胞对MMP-9和TIMP-1表达的影响

Objective To investigate the effect of SiO2 on the expression of matrix metalloproteinase-9 (MMP-9)and tissue inhibitor of metalloproteinase-1 (TIMP-1)in human silicofic alveolar macrophages (AM).Methods Human alveolar macrophages were collected from a silicotic patient by bronchoalveolar lavage and exposed to silicon dioxide for 3h,6h,12h,18h,24h and 36h.The expression of the MMP-9 in the AM were detected with zymography and immunological method and the expression of the TIMP-1 in the AM with immunological method.Results The expressions of MMP-9 in the AM increased clearly along with the time,reached peak at 24 h when detected with zymography (average optical density:3.061±0.153 vs 2.851±0.164,P＜0.05);and reached peak at 18h when detected with immunological method (average optical density:0.386±0.037 vs 0.322±0.034,P＜0.05).The expression of the TIMP-1 in the AM did not vary when detected with immunological method (P＞0.05).Conclusion SiO2 may affect the expression of MMP-9 and MMP-9 activity in the cultured AM.