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比较了生物活性检测法(bioassy,BA)与酶联免疫吸附法(ELISA)对大鼠腹腔巨噬细胞(macrophages,Mφ)分泌的肿瘤坏死因子-α(tumornecrosisfactor-α,TNF-α)的检测。在静息Mφ培养上清液中,用两种方法均未测到TNF-α;而脂多糖(lipopolysaccharide,LPS,100μg/L)刺激组,用两种方法均测到大量TNF-α;如LPS与秋水仙碱(colchicine,Col)联用,TNF-α的产生受到抑制,BA法检测显示抑制率为97%,而ELISA检测则显示抑制率为42%,提示Col对TNF-α生物活性的抑制比对其生物合成的抑制更明显。此外,Col在浓度≥10μmol/L时,可部分减轻TNF-α对其靶细胞L929的毒性作用。文中对这两种方法的优缺点进行了比较与讨论。
Bioassay (BA) and enzyme-linked immunosorbent assay (ELISA) were used to detect tumor necrosis factor-α (TNF-α) secreted by macrophages (Mφ) in rats. . In resting Mφ culture supernatants, no TNF-α was detected by either method; and lipopolysaccharide (LPS, 100 μg/L) stimulated the group, and a large number of TNF-α were detected by both methods; When LPS was combined with colchicine (Col), the production of TNF-α was inhibited. The BA inhibition rate was 97%, while the ELISA assay showed that the inhibition rate was 42%, suggesting Col’s biological activity against TNF-α. The inhibition is more pronounced than its inhibition of biosynthesis. In addition, Col can partially reduce the toxic effect of TNF-α on its target cell L929 at a concentration of ≥10 μmol/L. The paper compares and discusses the advantages and disadvantages of these two methods.