To stndy the fundamental characteristics and biosafety of the compound bone morphogenetic protein （ BMP ） and rhBMP- 2/CPC , and to provide a theoretical basis for the compound biologically active artificial bone ma...To stndy the fundamental characteristics and biosafety of the compound bone morphogenetic protein （ BMP ） and rhBMP- 2/CPC , and to provide a theoretical basis for the compound biologically active artificial bone made of calcium phosphate cement （CPC） and bone morphogenetic protein, simplex CPC was taken as the control group, and the compound with the blending ratio of 1g CPC to 5mg rhBMP-2 was taken as the experimentation group to determine the setting time, compressive, strength, acute toxicological and sub acute toxicological properties. The osteogenic characteristic of compound rhBMP- 2/CPC was measured by making animal model of radio discontinuous defect. The setting time of the two groups meets the clinical requirements, and the compressive strength of the solidified body of bone cement increases along with increasing the immersion time. Compound rhBMP- 2/ CPC has a favorable ostengenic characteristic for animal model of radio discontinuous deject. The fundamental characteristics of the compound rhBMP- 2 phosphate bone cement are basically the same as that of CPC, and also have a favorable biosafety and osteogenesis.展开更多
目的:通过对股骨头供血动脉栓塞建立股骨头缺血性坏死(avascular necrosis of femoral head,ANFH)(FicatⅡ期以前)动物模型行经皮穿刺骨水泥注射,研究该法防治股骨头坏死关节面塌陷影像学及病理学变化,初步探讨该方法的安全性、可行性...目的:通过对股骨头供血动脉栓塞建立股骨头缺血性坏死(avascular necrosis of femoral head,ANFH)(FicatⅡ期以前)动物模型行经皮穿刺骨水泥注射,研究该法防治股骨头坏死关节面塌陷影像学及病理学变化,初步探讨该方法的安全性、可行性。方法:以真丝线段微绒毛行家猪股骨头供血动脉栓塞,建立ANFH动物模型。对ANFH FicatⅡ期模型经皮穿刺骨水泥注射治疗并与对照组作影像及病理对照研究。结果:经股骨头供血动脉栓塞研制动物模型,方法新颖、成功率高,可控性强;TAE术后股骨头坏死进行性加重,平均塌陷时间为1.5个月;组织病理学示骨细胞逐渐坏死,高倍镜下单位面积的空缺骨陷窝数百分比(PBL)增多及骨小梁(TBV)减少;A组与B组、B组治疗前后的PBL与TBV比较差异有显著性(P<0.05)。结论:经股骨头供血动脉栓塞术建立ANFH模型方法新颖、有良好可控性,同时建立模型的周期缩短;而经皮穿刺骨水泥注射防治股骨头坏死关节面塌陷,对FicatⅡ期病变可以有效地阻止病变进展,防治其塌陷,是一种安全、有效及微创的方法。在进一步完善动物实验后,可以考虑有选择的进行临床实验性治疗。展开更多
文摘To stndy the fundamental characteristics and biosafety of the compound bone morphogenetic protein （ BMP ） and rhBMP- 2/CPC , and to provide a theoretical basis for the compound biologically active artificial bone made of calcium phosphate cement （CPC） and bone morphogenetic protein, simplex CPC was taken as the control group, and the compound with the blending ratio of 1g CPC to 5mg rhBMP-2 was taken as the experimentation group to determine the setting time, compressive, strength, acute toxicological and sub acute toxicological properties. The osteogenic characteristic of compound rhBMP- 2/CPC was measured by making animal model of radio discontinuous defect. The setting time of the two groups meets the clinical requirements, and the compressive strength of the solidified body of bone cement increases along with increasing the immersion time. Compound rhBMP- 2/ CPC has a favorable ostengenic characteristic for animal model of radio discontinuous deject. The fundamental characteristics of the compound rhBMP- 2 phosphate bone cement are basically the same as that of CPC, and also have a favorable biosafety and osteogenesis.
