Boosting caffeic acid performance as antioxidant and monoamine oxidase B/catechol-O-methyltransferase inhibitor
作者:Daniel Chavarria、Sofia Benfeito、Pedro Soares、Carla Lima、Jorge Garrido、Paula Serrão、Patrício Soares-da-Silva、Fernando Remião、Paulo J. Oliveira、Fernanda Borges
DOI:10.1016/j.ejmech.2022.114740
日期:2022.12
oxidative stress (OS) and depletion of nigrostriatal dopamine (DA) are closely linked to the neurodegeneration observed in Parkinson's Disease (PD). Caffeic acid (CA)-based antioxidants were developed, and their inhibitory activities towards monoamine oxidases (MAOs) and catechol O-methyltransferases (COMT) were screened. The results showed that the incorporation of an extra double bond maintained or even boosted
增加的氧化应激 (OS) 和黑质纹状体多巴胺 (DA) 的消耗与帕金森病 (PD) 中观察到的神经变性密切相关。开发了基于咖啡酸(CA)的抗氧化剂,并筛选了它们对单胺氧化酶(MAOs)和儿茶酚O-甲基转移酶(COMT)的抑制活性。结果表明,额外双键的加入保持甚至增强了 CA 的抗氧化性能。α-CN 衍生物显示出与 CA ( 1 ) 相似的氧化还原电位 ( E p ),并以低 μM IC 50值抑制h MAO-B。此外,儿茶酚酰胺作为 MB-COMT 抑制剂,显示 IC 50低 μM 范围内的值。一般来说,CA 衍生物在浓度高达 10 μM 时表现出安全的细胞毒性特征。CA 衍生物诱导的活性氧 (ROS) 的形成可能是在较高浓度下观察到的细胞毒性作用的基础。10 μM 的儿茶酚酰胺3 – 6 , 8 – 11 可保护细胞免受氧化损伤。预计化合物3和8通过被动扩散穿过血脑屏障 (BBB)。总之,我们首次报道了可以恢复