The effects of deoxynlvalenol (DON), T--2 toxin, nivalenol (NIv), hutenolide (BuT).alternariol methyl ether(AME) and monlliformin (cON ) on rabbit articular chondrocytes were observed by using the method of chondrocyt...The effects of deoxynlvalenol (DON), T--2 toxin, nivalenol (NIv), hutenolide (BuT).alternariol methyl ether(AME) and monlliformin (cON ) on rabbit articular chondrocytes were observed by using the method of chondrocyte monolayer culture. The amounts or DNA in chondrocytesand glucuronate in matrix were measured. And the chondrocytes were observed by inversion microscope and transmission electron microscope (TEM). The results showed that the cultured chondrocytes were damaged by all the six mycotoxinsl and the synthesis of DNA and the divided reproductionof chondrocytes were restrained; the damage errect was more evident, esl,ecially in the early stage ofculturel the higher concentration or toxin in the media was used, the lower density of the culturalckondrocytes was observed; the cells were even round damaged and dead, so long as the media contolued toxin. When the six mycotoxins arrected the cultural chondrocytes r.spectively, three dirfereut kinds or ultrastructural changes in ckondrocytes were seen by TEa. The relationship betweenmycotoxiu and KBD was preliminarily discussed, and some problems still need further investigation..展开更多
目的：应用大鼠血清建立大鼠体外软骨细胞退变模型。方法：取出生24 h SD大鼠关节处软骨，Ⅱ型胶原酶多次消化后获得原代软骨细胞，取原代细胞进行实验。软骨细胞分别用含10％胎牛血清的DMEM （对照组）、含50 ng／mL 白细胞介素（ IL ...目的：应用大鼠血清建立大鼠体外软骨细胞退变模型。方法：取出生24 h SD大鼠关节处软骨，Ⅱ型胶原酶多次消化后获得原代软骨细胞，取原代细胞进行实验。软骨细胞分别用含10％胎牛血清的DMEM （对照组）、含50 ng／mL 白细胞介素（ IL ）－1β＋10％胎牛血清的 DMEM （ IL－1β组）、含2．5％大鼠血清的DMEM（2．5％血清组）及含5．0％大鼠血清的DMEM（5．0％血清组）中培养。培养24 h后，观察细胞形态变化，MTT法检测各组细胞的增殖情况，蛋白质印迹法检测增殖细胞核抗原的表达和Ⅱ型胶原及MMP－13的表达，实时定量PCR检测退变相关基因ADAMTS5、MMP－9、Aggrecan和SOX－9的表达。结果：两血清组和IL－1β组的软骨形态均由原来的多角形变成长梭形，且两血清组和IL－1β组均促进软骨细胞的增殖，下调转录因子SOX－9和上调基质降解酶MMP－13、MMP－9、ADAMTS5的表达。结论：大鼠血清具有促进软骨退变的作用，可用于建立体外软骨退变模型。展开更多
文摘The effects of deoxynlvalenol (DON), T--2 toxin, nivalenol (NIv), hutenolide (BuT).alternariol methyl ether(AME) and monlliformin (cON ) on rabbit articular chondrocytes were observed by using the method of chondrocyte monolayer culture. The amounts or DNA in chondrocytesand glucuronate in matrix were measured. And the chondrocytes were observed by inversion microscope and transmission electron microscope (TEM). The results showed that the cultured chondrocytes were damaged by all the six mycotoxinsl and the synthesis of DNA and the divided reproductionof chondrocytes were restrained; the damage errect was more evident, esl,ecially in the early stage ofculturel the higher concentration or toxin in the media was used, the lower density of the culturalckondrocytes was observed; the cells were even round damaged and dead, so long as the media contolued toxin. When the six mycotoxins arrected the cultural chondrocytes r.spectively, three dirfereut kinds or ultrastructural changes in ckondrocytes were seen by TEa. The relationship betweenmycotoxiu and KBD was preliminarily discussed, and some problems still need further investigation..
