抗炎药物对COX-1人类关节软骨细胞和cox - 2的活动。
文章的细节
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引用
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布兰科FJ,水平R,莫雷诺J•德•托罗FJ Galdo F
抗炎药物对COX-1人类关节软骨细胞和cox - 2的活动。
J Rheumatol。1999年6月,26 (6):1366 - 73。
- PubMed ID
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10381057 (在PubMed]
- 文摘
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目的:探讨甾体和非甾体类抗炎药物的作用(非甾体抗炎药)环氧酶(COX-1和cox - 2)在人类关节软骨细胞活动。方法:分离软骨细胞捐献者无关节疾病的关节软骨。如果和白介素1 (il - 1)刺激软骨细胞作为模型来研究药物COX-1和cox - 2的影响。细胞培养与车辆或药物;上层清液被移除和前列腺素E2 (PGE2)的水平在每个样本是由酶免疫分析法。IC50从减少PGE2含量计算不同浓度测试的物质通过线性回归分析。结果:COX - mRNA在如果发现细胞,但与il - 1刺激12 h不修改COX-1 mRNA的水平。相比之下,cox - 2 mRNA在如果没有检测到细胞,但它是由il - 1诱导的。地塞米松抑制cox - 2 mRNA表达il - 1引起的。cox - 2蛋白水平与mRNA的表达。 Dexamethasone was the strongest drug inhibitor of COX-2 (IC50 = 0.0073 microM). However, it did not inhibit COX-1 activity. Among all NSAID tested, meloxicam and aspirin were the least potent inhibitors of COX-1 (IC50 = 36.6 microM and 3.57 microM, respectively). Indomethacin and diclofenac were the most potent inhibitors of COX-1 (IC50 = 0.063 microM and 0.611 microM, respectively) and COX-2 isoforms (IC50 = 0.48 microM and IC50 = 0.63 microM, respectively). Meloxicam was a more potent inhibitor of COX-2 (IC50 = 4.7 microM) than aspirin (IC50 = 29.3 microM) and similar to piroxicam (IC50 = 4.4 microM). Among all drugs tested dexamethasone showed the greatest selectivity for COX-2 and meloxicam was the NSAID with the best COX-2/COX-1 ratio (r = 0.12). Aspirin and piroxicam were about 8 times more active against COX-1 than COX-2, indomethacin was 7 times more active, and diclofenac was an equipotent inhibitor of COX-1 and COX-2. CONCLUSION: We found that COX-1 and COX-2 isoforms are expressed in human chondrocytes at rest and in IL-1 stimulated cells, respectively. Antiinflammatory drugs have different capacities to inhibit COX enzyme in human articular chondrocytes.
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- 药物靶点
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药物 目标 类 生物 药理作用 行动 吲哚美辛 前列腺素合成酶1 G / H 蛋白质 人类 未知的抑制剂细节 吲哚美辛 前列腺素合成酶2 G / H 蛋白质 人类 是的抑制剂细节 Meloxicam 前列腺素合成酶1 G / H 蛋白质 人类 未知的抑制剂细节 Meloxicam 前列腺素合成酶2 G / H 蛋白质 人类 是的抑制剂细节 吡罗昔康 前列腺素合成酶1 G / H 蛋白质 人类 未知的抑制剂细节 吡罗昔康 前列腺素合成酶2 G / H 蛋白质 人类 是的抑制剂细节