富血小板血浆联合右归饮对骨质疏松模型大鼠的实验研究

Experimental study of platelet-rich plasma combined with Youguiyin on osteoporosis model in rats

目的研究富血小板血浆(PRP)联合右归饮对大鼠骨质疏松性骨折的影响。方法 8月龄SPF级SD雌性大鼠148只,随机分为4组:空白模型组(K组)、右归饮组(Y组)、PRP组(P组)、联合组(L组)。K组不做处理,其中P组和L组于骨折造模术前眼眶采血,制备PRP,在骨折模型建立术中将PRP凝胶注入骨折端;Y组及L组给予右归饮灌胃。观察骨折端影像学以及病理组织学变化,比较四组骨折愈合情况。结果从Micro-CT的骨痂图可见Y组、P组及L组在骨折后同一时间点骨痂的骨量较K组高。定量分析得出,每个时间点都是L组BV及BV/TV最高。组织病理学观察可见各实验组较K组的骨痂生长有明显改善。免疫组织化学观察结果:Col2a1在L组和P组在骨折术后1周表现为中度阳性,术后2周为强阳性,术后4周与6周为弱阳性。Y组骨折术后1周、2周均表现为中度阳性,术后4周与6周为弱阳性,K组术后1周表现为中度阳性,2周和4周时表现为弱阳性,6周时表现为阴性。结论 L组治疗大鼠骨质疏松性骨折较单纯的P组和Y组治疗效果更佳,能显著提高大鼠骨质疏松性骨折愈合质量,明显缩短骨折愈合周期。

Objective To study the effect of platelet-rich plasma（PRP） combined with Youguiyin on osteoporotic fractures in rats. Methods 148 8-month SPF female SD rats were randomly divided into four groups： blank model group （group K）, Youguiyin group （group Y）, PRP group （group P）, and combination group （group L）. No treatment was performed in group K. The blood of group P and group L was collected from the eyelids before fracture surgery to prepare PRP, and PRP gel was injected into the fracture end during the establishment of fracture model. Group Y and group L were given Youguiyin by gavage. The changes in imaging and histopathology at the fracture end were observed and the fracture healing of the four groups was compared. Results The osteotomy map of Micro-CT showed that bone mass of bone callus was higher in group Y, group P, and group L than that in group K at the same time after fracture. Quantitative analysis showed that the BV and BV/TV of group L was the highest at each time point. Histopathological observation showed that the growth of bone callus in the experimental group was significantly better than that in the group K. immunohistochemistry results showed that Col2a1 was moderate positive in the group L and P at 1 week after fracture, strong positive at 2 weeks and weak positive at 4 and 6 weeks after operation. Col2a1 in group Y was moderate positive at 1 and 2 weeks postoperatively and weak positive at 4 and 6 weeks postoperatively. Col2a1 in group K was moderate positive at 1 week postoperatively and weak positive at 2 and 4 weeks postoperatively, and negative at 6 weeks after surgery. Conclusion The treatment of osteoporotic fractures in group L is better than that in group P and Y in the treatment of osteoporotic fractures. It can significantly improve the quality of osteoporotic fracture healing in rats and significantly shorten the period of fracture healing.