[EN] TRYPTAMINE DERIVATIVES, THEIR PREPARATION AND THEIR USE IN GASTROPATHY<br/>[FR] DÉRIVÉS DE TRYPTAMINE, LEUR PRÉPARATION ET LEUR UTILISATION DANS UNE GASTROPATHIE
申请人:COUNCIL SCIENT IND RES
公开号:WO2012035406A1
公开(公告)日:2012-03-22
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NSAIDs(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NSAIDs诱导的体内线粒体氧化应激。该衍生物通过阻止caspase 9和caspase-3的活化,恢复NSAIDs介导的线粒体跨膜电位和脱氢酶活性的崩溃,从而预防NSAID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NSAID诱导的胃病和压力或酒精介导的胃损伤。