摘要
目的探讨植入新西兰兔股骨髁内的珍珠层粉的成骨能力及成骨方式。方法将珍珠层加工成粉,植入新西兰兔股骨髁内,术后4、8和12周进行影像学检查及X线阻射度测定;相应时间点取材,进行硬组织切片处理及组织学观察;应用Image-Pro图形软件分析术后8、12周丽春红染色硬组织切片的成骨面积;对X线阻射度做统计学重复测量的方差分析,成骨面积作析因设计的方差分析。结果在不同的时间点,X线片密度有轻度变化,未见到明确的新生骨影像;X线的阻射度测定显示在不同时间点阻射度值逐渐降低,变化有统计学意义;硬组织切片可见到类骨质、编织骨和板层骨随时间变化生成量逐渐增加;图形分析显示出珍珠层粉明显的成骨面积,与空白对照组比较统计学差异显著。结论珍珠层粉植入新西兰兔股骨髁内有明显的成骨作用,在体内的生物降解缓慢,可能以骨诱导的方式成骨。
Objective To evaluate nacre powder-induced osteogensis in the femoral condyles of New Zealand rabbits and investigate the possible mechanism. Methods Nacre powder was implanted into the femoral condyles of New Zealand rabbits and 4, 8, and 12 weeks after the implantation, radiographic examinations were carded out and the bone density was evaluated. The bone tissue specimens were sliced after fixation for histological observations. The osteogenesis area on the slice was estimated with Ponceau Red staining 8 and 12 weeks after the implantation and calculated with Imaga-Pro software. Results X-ray after the operation did not reveal obvious evidence of angiogenesis in the femoral condyles, where the X-ray density underwent slight changes. The optical density decreased significantly after the implantation, and the quantity of the osteoid, woven and lamellar bone increased in the bone tissue with time. The osteogenesis area with Ponceau Red staining showed obvious bone formation, which was significantly different from the control group. Conclusion Obvious osteogenesis occurred in the femoral condyles after nacre powder implantation in New Zealand rabbits. Nacre powder has slow biodegradation in vivo and induces osteogenesis by osteoinduction.
出处
《南方医科大学学报》
CAS
CSCD
北大核心
2009年第2期220-223,227,共5页
Journal of Southern Medical University
基金
国家自然科学基金(30271321)
关键词
珍珠层
新生骨
骨诱导
股骨髁
nacre
new bone
osteoinduction
femoral condyles
