【摘要】 本文利用ＳＤＳ－聚丙烯酰胺凝胶电泳方法，定量研究了体外培养的软骨细胞和软骨组织基质中Ⅱ型胶原蛋白的含量。结果表明氧自由基（·Ｏ－２和·ＯＨ）和具有自由基性质的物质（黄腐酸，镰刀菌毒素）可使软骨细胞合成，分泌异常的非Ⅱ型的胶原蛋白，同时，硒化合物可明显地抑制此种效应。更多还原

【Abstract】 In this paper, a method of determining the percentage of type Ⅱ collagen in extracellular matrix of cultured chondrocytes or caritilage tissue in terms of the spectrophotometric densities of specific cyangen bromide peptide bonds on SDS-polyacrylamide gels has been used. The results show that the free radical generating systems, including Fe(Ⅱ)-EDTA,Xanthine Oxidase-Xanthine. Fulvic acid and Fusarium toxin, can cause chondrocytes to synthesize and secrete mainly type Ⅰ collagen instead of the normal type Ⅱ collagen. In addition, The collagen type change can be inhibited by Se(Ⅳ) compounds.更多还原