The present invention concerns the synthesis and evaluation of gastroprotective effect of different tryptamine derivatives. Tryptamine derivatives have been synthesized by formation of amide or ester with some known anti oxidant molecules. These derivatives show excellent antioxidant property in vitro. Among all the derivatives the compound SEGA (3 a), that was prepared by the combination of serotonin with gallic acid shows the greater antioxidant property than the other synthesized compounds both in vivo and in vitro. SEGA(3a) shows the gastroprotective effect against NSAIDs (indomethacin or diclofenac)-induced gastropathy in dose dependent manner and also accelerates the healing from injury. It prevents the NSAIDs-induced mitochondrial oxidative stress in vivo. This derivative prevents NSAID-induced mitochondrial oxidative stress-mediated apoptosis in vivo by preventing the activation of caspase 9 and caspase-3 and restores NSAIDs-mediated collapse of mitochondroial transmembrane potential and dehydrogenase activity. SEGA (3 a) plays an important role as an iron chelator as well as intra mitochondrial ROS scavenger. Thus, SEGA (3 a) is a potent antioxidant antiapototic molecule, which efficiently prevents NSAID-induced gastropathy and stress or alcohol -mediated gastric damage.
本发明涉及合成和评估不同
色胺衍
生物的胃保护效果。
色胺衍
生物通过与一些已知的抗氧化分子形成酰胺或酯而被合成。这些衍
生物在体外表现出优秀的抗氧化性能。在所有的衍
生物中,通过将
血清素与
没食子酸结合制备的
SEGA(3a)表现出比其他合成化合物更强的抗氧化性能,无论是在体内还是在体外。
SEGA(3a)显示出对N
SAIDs(消炎药,如
消炎痛或
双氯芬酸)诱导的胃病的剂量依赖性胃保护作用,并且加速受伤后的愈合。它可以预防N
SAIDs诱导的体内线粒体氧化应激。该衍
生物通过阻止caspa
SE 9和caspa
SE-3的活化,恢复N
SAIDs介导的线粒体跨膜电位和脱氢酶活性的崩溃,从而预防N
SAID诱导的线粒体氧化应激介导的凋亡。
SEGA(3a)作为
铁螯合剂和线粒体内ROS清除剂发挥重要作用。因此,
SEGA(3a)是一种强效的抗氧化抗凋亡分子,有效预防N
SAID诱导的胃病和压力或
酒精介导的胃损伤。