Four phenanthrene and one aporphine alkaloids semi-synthesized from boldine were evaluated for their inhibitory effect on reactive oxygen species (ROS) generation. ROS generation by neutrophils stimulated with N-formyl-methionyl-leucyl-phenylalanine was inhibited in a concentration dependent manner. Alkaloids exerted similar inhibitory effect in the hypoxanthine–xanthine oxidase system than in stimulated neutrophils, which could be attributed to a direct ROS scavenging activity. None of the alkaloids assayed had any effect on xanthine oxidase activity. Therefore the synthesized alkaloids might constitute an alternative therapy in inflammation disorders in which ROS generation is involved.
研究人员评估了从粗碱半合成的四种
菲生物碱和一种卟吩
生物碱对活性氧(ROS)生成的抑制作用。在 N-甲酰基-蛋
氨酰-
亮氨酰-苯丙氨酸的刺激下,中性粒细胞产生的 ROS 会受到浓度依赖性抑制。
生物碱对
次黄嘌呤-
黄嘌呤氧化酶系统的抑制作用与对受刺激的中性粒细胞的抑制作用相似,这可能是由于
生物碱具有直接清除 ROS 的活性。没有一种
生物碱对
黄嘌呤氧化酶的活性有任何影响。因此,合成的
生物碱可作为一种替代疗法,用于治疗与 ROS 生成有关的炎症疾病。