AIM:To study the biological function of transforming growth factor a1(TGF-a 1),vascular endothelial growth factor(VEGF),basic fibroblast growth factor(bFGF) during the process of osteoblasts allografts to accelerate f...AIM:To study the biological function of transforming growth factor a1(TGF-a 1),vascular endothelial growth factor(VEGF),basic fibroblast growth factor(bFGF) during the process of osteoblasts allografts to accelerate fracture healing of osteoporosis rats.METHODS: Set up the fracture models of osteoporosis rats and do osteoblasts grafts; during different periods in the process of fracture heal ing by using immunnohistochemistry to detect the expression of TGF-a1,VEGF,bFG F and in situ hybridization to study the expression of bFGFmRNA,VEGFmRNA,TGF-a 1 mRNA,also using image analysis to deal with it.RESULTS:In experimental group, Osteoblasts can survive, even proliferate in fracture areas;VEGF,bFGF could be s een positive after 7 days of after osteoblast grafts,and there have the highest quantities about 14 days of post-transplantation.TGF-a1 could be seen positiv e after 3 days of post-transplantation,and there have the highest quantities ab out 7-10 days of post-transplantation.However there are not obviously high qua ntities in control.CONCLUSION:Osteoblasts grafts enhance bone fracture healing of osteoporosis rats.TGF-a1, VEGF and bFGF play very important roles in accel erating fracture healing of osteoporosis rats.展开更多
Background Optical coherence tomography （OCT） is increasingly used in the process of percutaneous coronary intervention （PCI）, but there is still lack of data about the significance of OCT in the process of PCI. T...Background Optical coherence tomography （OCT） is increasingly used in the process of percutaneous coronary intervention （PCI）, but there is still lack of data about the significance of OCT in the process of PCI. The study aimed to investigate the long term value of OCT in the procedure of PCI. Methods One hundred sixty-five patients with coronary artery disease and implanted drug eluting stents were enrolled in the retrospective study. OCT was performed after stent implantation to detect the complications in 82 patients, who were named as OCT group. And the other 83 patients without OCT application served the control group. Incidence of the angina pectoris, acute myocardial infarction, revascularization and cardiac sudden death was observed in the two groups during one year follow-up. Results At one year clinical follow-up, the incidences of angina and revascularization in OCT group were significantly lower than those in control group （angina： 3.66% vs. 18.07%, P 〈 0.05; revascularization： 2.44% vs. 12.04%, P 〈 0.05）, the incidence of acute myocardial infarction was not significantly different （2.44% vs. 4.82%, P 〉 0.05）. Conclusions OCT is a feasible technique for guidance of coronary interventions, and its application during PCI procedure can improve the clinical outcome.展开更多
文摘AIM:To study the biological function of transforming growth factor a1(TGF-a 1),vascular endothelial growth factor(VEGF),basic fibroblast growth factor(bFGF) during the process of osteoblasts allografts to accelerate fracture healing of osteoporosis rats.METHODS: Set up the fracture models of osteoporosis rats and do osteoblasts grafts; during different periods in the process of fracture heal ing by using immunnohistochemistry to detect the expression of TGF-a1,VEGF,bFG F and in situ hybridization to study the expression of bFGFmRNA,VEGFmRNA,TGF-a 1 mRNA,also using image analysis to deal with it.RESULTS:In experimental group, Osteoblasts can survive, even proliferate in fracture areas;VEGF,bFGF could be s een positive after 7 days of after osteoblast grafts,and there have the highest quantities about 14 days of post-transplantation.TGF-a1 could be seen positiv e after 3 days of post-transplantation,and there have the highest quantities ab out 7-10 days of post-transplantation.However there are not obviously high qua ntities in control.CONCLUSION:Osteoblasts grafts enhance bone fracture healing of osteoporosis rats.TGF-a1, VEGF and bFGF play very important roles in accel erating fracture healing of osteoporosis rats.
文摘Background Optical coherence tomography （OCT） is increasingly used in the process of percutaneous coronary intervention （PCI）, but there is still lack of data about the significance of OCT in the process of PCI. The study aimed to investigate the long term value of OCT in the procedure of PCI. Methods One hundred sixty-five patients with coronary artery disease and implanted drug eluting stents were enrolled in the retrospective study. OCT was performed after stent implantation to detect the complications in 82 patients, who were named as OCT group. And the other 83 patients without OCT application served the control group. Incidence of the angina pectoris, acute myocardial infarction, revascularization and cardiac sudden death was observed in the two groups during one year follow-up. Results At one year clinical follow-up, the incidences of angina and revascularization in OCT group were significantly lower than those in control group （angina： 3.66% vs. 18.07%, P 〈 0.05; revascularization： 2.44% vs. 12.04%, P 〈 0.05）, the incidence of acute myocardial infarction was not significantly different （2.44% vs. 4.82%, P 〉 0.05）. Conclusions OCT is a feasible technique for guidance of coronary interventions, and its application during PCI procedure can improve the clinical outcome.
