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J Med Chem:中科院张艳梅研究组发表抗炎止痛药物研究进展

2017-05-10 佚名 生物帮

2017年5月5日,美国化学会药物化学杂志《JouRNAl of Medicinal Chemistry》在线发表了中国科学院广州生物医药与健康研究院药物研发体系高级研发人员张艳梅与美国著名药物化学家John J. Talley组成项目组合作的一篇研究论文,论文报道了在开发的COX-2选择性抑制剂抗炎止痛药物项目的新进展。关节炎是一种常见的慢性疾病,被列为世界头号致残性疾病。最新统计数据显示,目前

2017年5月5日,美国化学会药物化学杂志《JouRNAl of Medicinal Chemistry》在线发表了中国科学院广州生物医药与健康研究院药物研发体系高级研发人员张艳梅与美国著名药物化学家John J. Talley组成项目组合作的一篇研究论文,论文报道了在开发的COX-2选择性抑制剂抗炎止痛药物项目的新进展。

关节炎是一种常见的慢性疾病,被列为世界头号致残性疾病。最新统计数据显示,目前全世界关节炎患者有3.55亿人。截至2015年,中国大陆的关节炎患者有1.2亿人,发病率约为13%,患病人数不断增加,且年轻人发病率逐渐升高。我国每年在关节炎患者治疗总费用上支出135亿元以上,存在庞大的抗炎药止痛药物市场。选择性COX-2 抑制剂是一组新型的NSAID(Nonsteroidal antiinflammatory Drugs)类药物,与传统的非选择性NSAID相比,COX-2抑制剂引起的胃肠道合并症更少,故自上世纪90年代发明至今,在临床上使用越来越广泛。

化合物SF-1001是具有独立知识产权的新型COX-2选择性抑制剂抗炎止痛药物。科研人员通过生物活性检测表明,该化合物具有较好的成药性和进一步研究开发的前景。SF-1001对COX-1的IC50值大于10 uM,对COX-2的IC50值为0.018 uM。而临床一线药物塞莱昔布(Celecoxib)对COX-1的IC50值大于10uM,对COX-2的IC50值为0.050uM。由此可见,该化合物是COX-2有效的选择性抑制剂。

化合物SF-1001具有良好生物利用度,它的生物利用度和半衰期(T1/2 = 12.5 h)优于Celecoxib。另外,SF-1001的分散容积为0.34,远远好于Celecoxib的分散容积(1.944)。与同类药物Celecoxib、Rofecoxib、Valdecoxib相比较,化合物SF-1001在体内局部分布在致病组织,因而能够显着降低昔布类药物引起的心脏毒性和肾脏毒性。这是选择性的苯并吡喃类COX-2抑制剂所具有的特性。因此,SF-1001可被开发成高效而低毒的抗炎止痛药物。此外,在3种不同的动物模型上表征该化合物,具有很强的抗炎止痛活性,效果优于一线临床药物Celecoxib。化合物SF-1001制备相对比较简单,科研人员也开发S构型化合物的合成方法,经济而高效。


新型COX-2选择性抑制剂抗炎止痛药物

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    2018-04-08 gous
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对类风湿关节炎(RA)联用他汀类降脂药和抗炎药物,可能有益于生存。然而,关于这一联系的数据是有限的,他汀类药物在类风湿性关节炎中的作用尚不清楚。 因此有研究者对一般人群中的类风湿性关节炎患者患者进行了研究,探究使用他汀类药物与总死亡率的关系。 使用英国总人口数据库的数据,我们进行了一项时间分层倾向得分匹配的队列研究。研究人群包括2000年1月至2012年12月期间诊断为RA的≥ 20岁

J Nutr Biochem:叶酸摄入量过多削弱机体免疫系统?

这项研究是由塔夫茨大学美国农业部人类营养研究中心(HNRCA)的研究人员进行的,研究结果发表在Nutritional Biochemistry。众所周知,孕妇的叶酸水平较低会增加婴儿神经管缺陷的风险。美国政府推荐民众叶酸摄入量为:孕妇600µg/天,普通民众400µg/天。 叶酸存在于许多天然食物中,例如绿叶蔬菜、豆类、鸡蛋、谷物和鱼等。此外,许多谷物富含叶酸。 机体每天都需要利用叶酸生成新的细胞

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