牵张成骨术整复猕猴腭裂后胰岛素样生长因子-1与碱性磷酸酶表达研究

Objective To investigate the osteogenesis mechanism by analysis of the expression of insulin-like growth factor-I (IGF-1)and alkaline phesphatas (ALP)in the reconstruction of cleft palate(CP) with distraction osteogenesis (DO) in rhesus. Methods The CP animal models were established surgically. 21 rhesus in experimental group underwent DO to close the soft and bony defect, followed by consolidations. Every 3 animals were killed and the specimen were taken out after consolidation of 1, 2, 4, 6, 8, 12, 24 weeks. The mRNA of IGF-1 and ALP were detected with Real-time BT-PCB technique. The expression of IGF-1 and ALP was quantitatively analyzed by ELISA. The results were compared with those in control and sham groups (each of 2 animals), respectively. Results Since consolidation, the mRNA of IGF-1 and ALP increased significantly at one week and reached the peak at two weeks, but decrease to control level after 12 weeks of consolidation. The expression of IGF-1 also increased to peak level afiert two weeks of consolidation. The expression of ALT increased significantly since consolidation and reach the peak value after six weeks. They all decreased to nearly control level after 8 ～ 12 weeks. Conclusions The palate cleft can be successfully closed with new formed bone after DO. The mechanism of bone consolidation is intramembranons bone formation.     

分子靶向治疗在晚期甲状腺癌中的临床应用

甲状腺癌的发病率逐年上升,总体上治疗效果良好,但仍有一部分难治性甲状腺癌缺乏有效的治疗手段。随着甲状腺癌分子病理机制研究的不断进展,以激酶抑制剂为代表的分子靶向治疗逐步在晚期甲状腺癌治疗中得到越来越广泛的应用,为晚期甲状腺癌患者带来新的希望。     

牵张成骨术整复猕猴腭裂后胰岛素样生长因子-1与碱性磷酸酶表达研究

Objective To investigate the osteogenesis mechanism by analysis of the expression of insulin-like growth factor-I (IGF-1)and alkaline phesphatas (ALP)in the reconstruction of cleft palate(CP) with distraction osteogenesis (DO) in rhesus. Methods The CP animal models were established surgically. 21 rhesus in experimental group underwent DO to close the soft and bony defect, followed by consolidations. Every 3 animals were killed and the specimen were taken out after consolidation of 1, 2, 4, 6, 8, 12, 24 weeks. The mRNA of IGF-1 and ALP were detected with Real-time BT-PCB technique. The expression of IGF-1 and ALP was quantitatively analyzed by ELISA. The results were compared with those in control and sham groups (each of 2 animals), respectively. Results Since consolidation, the mRNA of IGF-1 and ALP increased significantly at one week and reached the peak at two weeks, but decrease to control level after 12 weeks of consolidation. The expression of IGF-1 also increased to peak level afiert two weeks of consolidation. The expression of ALT increased significantly since consolidation and reach the peak value after six weeks. They all decreased to nearly control level after 8 ～ 12 weeks. Conclusions The palate cleft can be successfully closed with new formed bone after DO. The mechanism of bone consolidation is intramembranons bone formation.     

牵张成骨术整复猕猴腭裂骨桥蛋白与骨钙蛋白表达研究

Objective To study the mechanism of new bone formation and remodeling of distraction osteogenesis(DO) by analysis of the expression of osteopotin(OPN)and osteecalcin(OC). Methods Rhesus were operated to reconstruct the animal model of cleft palate(CP). The CP was closed by DO in experimental group(n=21). After consolidation of 1, 2, 4, 6, 8, 12, 24 weeks, every 3 animals were killed to collect the specimens, respectively. The OPN and OC and their mRNA were detected quantitatively by Real-time RT-PCR and ELISA, respectively. The animals in control group(n=2) and sham group(n=2) were used as control. Results The mRNA expression of OPN increased since 2nd week of consolidation and reached the peak at 4th week(7.59±0.37). The mRNA expression of OC was up-regulaed since 4th week, and reach the peak at 6th week(7.94±0.31). Then they decreased to about the level in sham group at 24th week(P > 0.05). The OPN and OC were highly expressed during 4 to 6 weeks of consolidation. During 8 to 12 weeks, they decreased like their mRNA expression. Conclusion The intramembraneons new bone formation after DO can reconstruct the bone defect of CP. The new formed bone can be remodeled to be quite normal bone tissue.     

牵张成骨术整复猕猴腭裂后胰岛素样生长因子-1与碱性磷酸酶表达研究

Objective To investigate the osteogenesis mechanism by analysis of the expression of insulin-like growth factor-I (IGF-1)and alkaline phesphatas (ALP)in the reconstruction of cleft palate(CP) with distraction osteogenesis (DO) in rhesus. Methods The CP animal models were established surgically. 21 rhesus in experimental group underwent DO to close the soft and bony defect, followed by consolidations. Every 3 animals were killed and the specimen were taken out after consolidation of 1, 2, 4, 6, 8, 12, 24 weeks. The mRNA of IGF-1 and ALP were detected with Real-time BT-PCB technique. The expression of IGF-1 and ALP was quantitatively analyzed by ELISA. The results were compared with those in control and sham groups (each of 2 animals), respectively. Results Since consolidation, the mRNA of IGF-1 and ALP increased significantly at one week and reached the peak at two weeks, but decrease to control level after 12 weeks of consolidation. The expression of IGF-1 also increased to peak level afiert two weeks of consolidation. The expression of ALT increased significantly since consolidation and reach the peak value after six weeks. They all decreased to nearly control level after 8 ～ 12 weeks. Conclusions The palate cleft can be successfully closed with new formed bone after DO. The mechanism of bone consolidation is intramembranons bone formation.     

牵张成骨术整复猕猴腭裂后胰岛素样生长因子-1与碱性磷酸酶表达研究

Objective To investigate the osteogenesis mechanism by analysis of the expression of insulin-like growth factor-I (IGF-1)and alkaline phesphatas (ALP)in the reconstruction of cleft palate(CP) with distraction osteogenesis (DO) in rhesus. Methods The CP animal models were established surgically. 21 rhesus in experimental group underwent DO to close the soft and bony defect, followed by consolidations. Every 3 animals were killed and the specimen were taken out after consolidation of 1, 2, 4, 6, 8, 12, 24 weeks. The mRNA of IGF-1 and ALP were detected with Real-time BT-PCB technique. The expression of IGF-1 and ALP was quantitatively analyzed by ELISA. The results were compared with those in control and sham groups (each of 2 animals), respectively. Results Since consolidation, the mRNA of IGF-1 and ALP increased significantly at one week and reached the peak at two weeks, but decrease to control level after 12 weeks of consolidation. The expression of IGF-1 also increased to peak level afiert two weeks of consolidation. The expression of ALT increased significantly since consolidation and reach the peak value after six weeks. They all decreased to nearly control level after 8 ～ 12 weeks. Conclusions The palate cleft can be successfully closed with new formed bone after DO. The mechanism of bone consolidation is intramembranons bone formation.     

利用大动物模拟腭裂的建模方法及其应用评价

模拟先天性腭裂的动物模型是研究腭裂病因学、流行病学、临床治疗学等方面的重要手段之一。迄今建立和使用的腭裂模型动物有许多种，其中啮齿类动物如大鼠和小鼠的腭裂模型已比较稳定和成熟，但利用大动物如羊、猪、狗、猴、猫等的腭裂动物模型建模方法尚处于摸索阶段，其重复性及稳定性差。本文就上述大动物腭裂模型的分类、建立方法及应用评价作一综述。     

牵张成骨术整复猕猴腭裂后胰岛素样生长因子-1与碱性磷酸酶表达研究

目的 以牵张成骨术整复猕猴腭裂骨缺损,定量分析不同时段新生成骨胰岛素样生长因子-1(insulin.1ike growth factor-I,IGF-1)与碱性磷酸酶(alkaline phosphatase,ALP)表达水平,探讨其成骨调控机制.方法 用猕猴建立腭裂动物模型.实验组动物21只以牵张成骨术整复其腭部软硬组织缺损,关闭裂隙后固定.于牵张成骨术后第1、2,4…6 8 12及24周分别取材,各3只动物.采用实时定量PCR法分析比较IGF-I与ALP的mRNA表达水平,并以酶联免疫吸附试验法(ELISA)定量分析其IGF-I与ALP含量,结果与实验对照及健康对照组(动物各2只)进行比较.结果 固定期第1～2周为成骨早期,第1周时IGF-1和AIJP的mRNA表达明显上调,分别为3.67±0.35和3.30±0.21,第2周时达最高峰,分别为7.55±0.32和5.91±0.21,随后逐渐下降,至第12周与健康对照组无明显差异(P>0.05).ELISA结果显示:固定期第1～2周,IGF-1和ALP表达均增强.IGF-1含量于第2周表达最高,为(2.0±0.06)ng/mg,第4周为(1.46±0.08)ns/mg,第6周为(0.84±0.11)ng/mg,其表达逐渐下降;同期ALP则呈高水平表达,第4周为(25.34±0.44)U/mg,第6周为(26.21±0.82)U/mg.第8～12周,IGF-1和ALP的表达均下降至接近健康对照组.结论 腭骨牵张成骨区域,新骨的原位增量生成明确,增殖过程正常,最终以膜内成骨的方式形成新骨整复了腭裂骨切开牵张间隙区域.     

牵张成骨术整复猕猴腭裂骨桥蛋白与骨钙蛋白表达研究

目的 以牵张成骨术整复猕猴腭裂骨缺损,定量分析新骨在不同时期骨桥蛋白(osteopetin,OPN)与骨钙蛋白(osteocalcin,OC)的表达水平,探讨新骨生成与改建的规律.方法 以猕猴为对象建立腭裂动物模型.实验组动物21只行牵张成骨术整复其聘部软硬组织缺损,关闭裂隙后固定.固定期第1、2 4、6、8、12及24周分别取材,各3只动物.采用实时定量PeR法(real-time,RT-PCR)定量比较OPN与OC的mRNA表达水平,并以酶联免疫吸附试验法(ELISA)定量分析其OPN与OC含量,与实验对照组及健康对照组(各2只动物)结果进行比较.结果 固定期第2周OPNmRNA表达上调,第4周达最高(7.59±0.37);而OC mRNA表达则自第4周开始上调(4.98±0.21),第6周时达最大值(7.94±0.31);随后开始下降,至第24周时两者的mRNA表达水平接近健康对照组(P>0.05).ELISA结果显示:固定期第4、6周OPN分别为(4.75±0.15)ng/mg和(4.86±0.09)ng/mg,OC分别为(3.18±0.16)ng/mg和(3.63±0.33)ng/mg,两者均为高水平表达.至第8～12周以后蛋白表达趋势与其对应mRNA表达基本一致.结论 应用牵张成骨术整复腭裂骨缺损,其牵张区域新骨生成,裂隙被骨运送盘移动封闭,腭部裂隙被完全修复.