退变颈椎间盘组织中骨形态发生蛋白的基因表达

目的：了解骨形态发生蛋白（BMP）在椎间盘退变、突出过程中是否有表达。方法：采用颈椎间盘突出症前路钻孔减压术中所得椎间盘标本，进行组织学检查、BMP免疫组化和分子原位杂交研究。结果：突出的椎间盘与后纵韧带可融合发生部分骨化，形成的骨赘中BMP免疫组化染色及分子原位杂交阳性。上下软骨板和与之相邻的椎间盘组织BMP表达阳性。但椎间盘中心BMP表达阴性。自椎体骨和软骨板发出一些散在的呈“指状”的骨突嵌入椎间盘；其表面骨组织和周围的椎间盘组织BMP免疫组化染色及分子原位杂交阳性。结论：在突出颈椎间盘、软骨板、后纵韧带、骨膜中发现了BMP的阳性表达，但其来源、激活机制与意义尚需进一步研究。

Gene Expression of Bone Morphogenetic Protein in Degenerated Cervical Intervertebral Disc:Immunohistochemical and in Situ Hybridization Studies

Objective: To investigate the gene expression of bone morphogenetic protein(BMP)in human cervical disc.Methods:cervical disc specimen were obtained from patients undergoing anterior disc surgery,who had the signs of cervical disc herniation.Immunohistochemical and in situ hybridization studies were conducted to detect cells with BMP gene expression.Results:It showed positive staining of BMP-like immunohistoreactivity and its mRNA gene expression in degenerated discs,osteophytes,posterior longitudinal ligments,amd periosteum of vertebra.Conclusion:BMP may be relate to intervertebral disc degeneration as prolifertion stimulating factor of chondrocytes that replace normal anular cells during disc degeneration but its mechanism needs further study.