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    • 9. 发明授权
    • Regulation of x-ray mediated gene expression
    • 调节X线介导的基因表达
    • US5641755A
    • 1997-06-24
    • US278452
    • 1994-07-20
    • Ralph R. WeichselbaumDennis E. HallahanDonald W. Kufe
    • Ralph R. WeichselbaumDennis E. HallahanDonald W. Kufe
    • A61K31/40A61K41/00A61K48/00
    • A61K31/40A61K31/70A61K41/0019A61K41/0023
    • Treatment of cells with ionizing radiation is associated with the production of arachidonic acid. Inhibition of phospholipase A2 abolishes radiation-mediated arachidonate production, protein kinase C induction and tumor necrosis factor gene expression. The addition of inhibitors of lipoxygenase, such as ketoconazole, prior to irradiation reduces the expression of of tumor necrosis factor while maintaining the expression of other radiation inducible genes, such as Egr-1 and c-jun. In contrast, indomethacin, an inhibitor of cyclooxygenase, enhanced the expression of tumor necrosis factor as well as other radiation inducible genes. The results show that lipoxygenase inhibitors are useful in the treatment of radiation-induced mucositis, dermatitis, pneumonitis, proctitis, and esophagitis. which may be due to the production of cytokines such as TNF.
    • 用电离辐射处理细胞与花生四烯酸的生产有关。 磷脂酶A2的抑制消除辐射介导的花生四烯酸生成,蛋白激酶C诱导和肿瘤坏死因子基因表达。 在照射之前加入脂氧合酶抑制剂如酮康唑可降低肿瘤坏死因子的表达,同时保持其他放射诱导基因如Egr-1和c-jun的表达。 相比之下,吲哚美辛是环氧合酶抑制剂,增强了肿瘤坏死因子以及其他辐射诱导基因的表达。 结果表明,脂氧合酶抑制剂可用于治疗放射诱导的粘膜炎,皮炎,肺炎,直肠炎和食道炎。 这可能是由于产生诸如TNF的细胞因子。