OBJECTIVE To investigate the effect of acid fibroblast growth factor (aFGF) on guided bone regeneration (GBR), to study whether aFGF can promote the repairing ability of GBR in bone defect. METHODS 10 mm long segmental defects were created in the diaphyses of both radii in 16 New Zealand rabbits. The defect was bridged with a silicon tube. Human recombinant aFGF was instilled into the tube on the experimental side, while the contralateral tube was instilled with saline as control group. The radiographic, gross and histologic examination of the samples were analyzed at 2, 4, 6 and 8 weeks after operation. RESULTS On the experimental side, there was new bone formation in the bone medullary cavity, the endosteum and the section surface of the cortex at 2 weeks. At 4 weeks, at the center of the blood clot in the tube there was new bone formation and bone defect was completely healed at 8 weeks. On the control side, new bone formation was less in every period compared with that of the experimental side. At 8 weeks, there was only partial healing of the bone defect. CONCLUSION It can be concluded that aFGF can promote new bone formation and facilitate GBR in bone defect.
【摘要】 目的 比较酸性成纤维细胞生长因子(acid fibroblast growth factor,aFGF或FGF1)在正常乳腺组织、乳腺良性肿瘤及乳腺癌中的表达差异,探讨FGF1与乳腺癌血管生成的关系。方法 应用免疫组织化学(immunohistochemistry,IHC)SP法检测FGF1在40例乳腺癌组织、12例良性乳腺肿瘤组织及12例正常乳腺组织中的表达情况；以CD34抗体标记血管内皮细胞CD34抗原行乳腺癌组织微血管密度(micro vessel density,MVD)计数。〖HTH〗结果〖HTSS〗 FGF1在40例乳腺癌中的阳性表达率（57.5%，23/40)显著高于12例乳腺良性肿瘤组织中阳性表达率(16.7%,2/12)以及正常乳腺组织阳性表达率(0,0/12),差异有统计学意义(Plt;0.05)；良性肿瘤组FGF1表达率和正常乳腺组织比较无统计学意义(Pgt;0.05)。40例乳腺癌组织MVD计数为(70.17±29.33)个/HP,在23例FGF1阳性组中MVD计数为(89.48±23.23)个/HP,显著高于17例阴性组(44.06±12.53)个/HP,差异有统计学意义(Plt;0.05)。〖HTH〗结论 〖HTSS〗FGF1可能参与乳腺癌微血管生成。