纤维多孔钛微球复合纳米锶磷灰石修复骨缺损的实验研究

Objective To evaluate the effect of titanium fiber mesh microballoons combined with nano-Sr-HAP on repair of bone defects in vivo. Methods The experimental model was set up by creating drill defects in the bilateral femoral condyle of 24 SD rats [6 months, with the mean weight of (545±22 g)]. The left femoral defects were filled with titanium fiber mesh microballoons combined with nano-Sr-HAP, and the right with pure metal scaffolds. At the 1st, 2nd, 4th, and 8th week after surgery, the specimens were killed and taken the X-ray, histology, and histomorphology observation. The results were contrasted and ana-lyzed. Results X-ray observation showed that the bone defects in both sides were repaired. Histological re-sults showed that the titanium fiber mesh microballoons allowed the new bones growing inside, and more new bones in the left implants compared with those in the right sides. The results of histomorphometrical analysis confirmed that neo-bones in the left sides gradually increased as time passed. There were statistic differences in neo-bones at the 2nd, 4th, and 8th week, and the differences between the two sides were statistically sig-nificant at the 4th and 8th week. Conclusion As titanium fiber mesh microballoons used in this experiment have good biocompatibility and osteoconduction ability, they can be used as scaffold for bone defect repair; and Nano-Sr-HAP can enhance the repair ability of titanium fiber mesh.     

肋尖综合征误诊原因分析

肋尖综合征 ( Rib- tip syndrome)是第 10～ 12肋尖软骨的无菌性炎症 ,病因不甚清楚。该症发病率较日常所见的真肋肋软骨炎低 ,教科书及一般文献很少提及 ,且常不为人们注意 ,误诊率较高。作者自 1985年 9月以来共诊治外院误诊的肋尖综合征 14例 ,报告如下。1　临床资料1.1　一     

双膦酸盐与骨折愈合和非典型性骨折

典型的骨折愈合过程包括血肿和炎症反应、原始软骨痂形成、成熟板层骨形成以及骨板重建和塑形等四个时期。骨重建包括骨吸收和骨形成两个方面。软骨痂和硬骨痂重建对骨折愈合具有重要意义。双膦酸盐类药理基础在于抑制破骨细胞活性和骨转化水平,通过干预骨重建对骨折愈合产生影响。长期使用双膦酸盐不利于骨折愈合,有引起股骨非典型性骨折发生的危险。     

纤维多孔钛微球复合纳米锶磷灰石修复骨缺损的实验研究

Objective To evaluate the effect of titanium fiber mesh microballoons combined with nano-Sr-HAP on repair of bone defects in vivo. Methods The experimental model was set up by creating drill defects in the bilateral femoral condyle of 24 SD rats [6 months, with the mean weight of (545±22 g)]. The left femoral defects were filled with titanium fiber mesh microballoons combined with nano-Sr-HAP, and the right with pure metal scaffolds. At the 1st, 2nd, 4th, and 8th week after surgery, the specimens were killed and taken the X-ray, histology, and histomorphology observation. The results were contrasted and ana-lyzed. Results X-ray observation showed that the bone defects in both sides were repaired. Histological re-sults showed that the titanium fiber mesh microballoons allowed the new bones growing inside, and more new bones in the left implants compared with those in the right sides. The results of histomorphometrical analysis confirmed that neo-bones in the left sides gradually increased as time passed. There were statistic differences in neo-bones at the 2nd, 4th, and 8th week, and the differences between the two sides were statistically sig-nificant at the 4th and 8th week. Conclusion As titanium fiber mesh microballoons used in this experiment have good biocompatibility and osteoconduction ability, they can be used as scaffold for bone defect repair; and Nano-Sr-HAP can enhance the repair ability of titanium fiber mesh.     

蛋白激酶C对肿瘤细胞粘附性影响的研究进展

侵袭和转移是恶性肿瘤的重要生物学行为之一,是成功治疗肿瘤的最大障碍。粘附是肿瘤细胞侵袭的第一步,是调节某些肿瘤细胞转移的重要步骤,这种行为可能会影响转移过程中的几个阶段。细胞的聚集、粘附、胞吐(exocytosis)作用及细胞的流动性均是钙参与调节的过程[1,2],而且?..     

上海地区骨质疏松性骨折的发病特点研究（附5923例分析）

目的 通过分析上海地区中老年人发生骨质疏松性骨折的部位、性别、年龄等,阐明该地区骨质疏松性骨折的发病特点,为骨质疏松性骨折的防治提供理论依据.方法 回顾2000年1月至2005年12月在我院因脆性骨折就诊的中老年患者5923例,按患者性别、年龄、骨折部位等进行归纳、分析及总结.结果 60岁以上女性骨折发生数明显多于男性,其中,常见部位骨折最高发生率的年龄分别为：桡骨远端骨折为70岁;股骨颈骨折为75岁;股骨粗隆间骨折为80岁.各年龄组女/男数据比较：60岁以后各年龄段的女/男值与总计中的女/男值1.96相比差异显著（P＜0.05）,表明按年龄段划分有统计学意义,60岁以后女性发生骨折的几率明显高于男性.结论 60岁以后女性骨折发生率明显多于男性,桡骨远端骨折、股骨颈骨折、股骨粗隆间骨折发病高峰的年龄各有不同,应在骨质疏松性骨折的防治中引起重视,并区别对待.     

体外高能震波治疗骨不连和骨延迟愈合的初步结果

目的观察Ossatron高能体外震波仪治疗骨不连和骨延迟愈合的效果。方法2004年10月～2005年10月采用体外震波治疗18例四肢骨折术后骨不连和4例骨延迟愈合患者,C型臂X线机透视定位,根据不同骨折部位选择合适的震波能量、频率和冲击次数。内固定不稳定者震波治疗后以石膏或支具固定6～8周。术后6、12周及以后每个月随访复查X线片,直至骨折愈合。结果所有患者获3～12个月(平均6．7个月)随访。10例患者震波后出现局部瘀斑或肿胀,术后1～3 d缓解；无其它并发症发生。22例患者中,13例(59．1%)获骨性愈合,骨折愈合时间平均为4．3个月(6周～6个月)。18例内固定稳定的患者中12例骨折获愈合,其愈合率为66．7%。9例患者(40．9%)骨折未愈合。结论震波治疗对骨折断端稳定的骨不连和延迟愈合具有一定疗效,其突出特点是安全、无创。     

纤维多孔钛微球复合纳米锶磷灰石修复骨缺损的实验研究

Objective To evaluate the effect of titanium fiber mesh microballoons combined with nano-Sr-HAP on repair of bone defects in vivo. Methods The experimental model was set up by creating drill defects in the bilateral femoral condyle of 24 SD rats [6 months, with the mean weight of (545±22 g)]. The left femoral defects were filled with titanium fiber mesh microballoons combined with nano-Sr-HAP, and the right with pure metal scaffolds. At the 1st, 2nd, 4th, and 8th week after surgery, the specimens were killed and taken the X-ray, histology, and histomorphology observation. The results were contrasted and ana-lyzed. Results X-ray observation showed that the bone defects in both sides were repaired. Histological re-sults showed that the titanium fiber mesh microballoons allowed the new bones growing inside, and more new bones in the left implants compared with those in the right sides. The results of histomorphometrical analysis confirmed that neo-bones in the left sides gradually increased as time passed. There were statistic differences in neo-bones at the 2nd, 4th, and 8th week, and the differences between the two sides were statistically sig-nificant at the 4th and 8th week. Conclusion As titanium fiber mesh microballoons used in this experiment have good biocompatibility and osteoconduction ability, they can be used as scaffold for bone defect repair; and Nano-Sr-HAP can enhance the repair ability of titanium fiber mesh.     

透明质酸复合人骨形态发生蛋白-2转染兔骨髓基质干细胞的体内外成骨研究

目的观察透明质酸(HA)复合腺病毒介导的人骨形态发生蛋白(AdvhBMP)2基因转染的兔骨髓基质干细胞(BMSCs)的体内外诱导成骨活性。方法(1)体外成骨活性研究方法分成4组,AdvhBMP2转染细胞 HA组、AdvhBMP2转染细胞组、未转染细胞 HA组和未转染细胞组,采用免疫沉淀法(IP)、Western印迹法检测hBMP2表达、逆转录聚合酶链反应(RTPCR)法检测骨涎蛋白mRNA表达、ALP和vonKossa染色及ALP定量检测;(2)裸鼠肌内诱导成骨实验裸鼠12只(共24侧)分4组注射AdvhBMP2转染细胞 HA组(n=8)、注射AdvhBMP2转染细胞组(n=8)、注射未转染细胞组(n=4)和单纯注射HA组(n=4),观察方法采用X线、成骨计量对照、组织学观察法。结果(1)AdvhBMP2转染细胞 HA组和AdvhBMP2转染细胞组BMSCs表达hBMP2和骨涎蛋白mRNA,两组的ALP活性均高于未转染细胞 HA组和未转染细胞组(P<0.01),并有明显的钙结节形成;(2)AdvhBMP2转染细胞 HA组和AdvhBMP2转染细胞组均有成骨,两组差异有显著性(P<0.01),未转染细胞和单纯注射HA组均未见成骨,局部以纤维和脂肪组织为主。结论HA复合AdvhBMP2基因转染的BMSCs在体外有较好的诱导成骨活性,在裸鼠肌内有良好的诱导成骨和成软骨的作用,是可注射性的骨缺损修复方法。     

透明质酸复合BMP-2转染的兔骨髓基质干细胞在裸鼠肌内成骨的实验研究

我们通过动物实验，对高分子量透明质酸(hyaluronic acid，HA)复合腺病毒介导的人骨形态发生蛋白-2基因(Adv-hBMP-2)体外转染兔骨髓基质干细胞(BMSCs)裸鼠肌内成骨与成软骨能力进行了观察。