首页> 外文期刊>Neurochemistry International: The International Journal for the Rapid Publication of Critical Reviews, Preliminary and Original Research Communications in Neurochemistry >Evaluation of MAO activities on murine neuroblastoma cells upon acute or chronic treatment with aluminium (III) or tacrine.
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Evaluation of MAO activities on murine neuroblastoma cells upon acute or chronic treatment with aluminium (III) or tacrine.

机译:铝或他克林急性或慢性治疗对鼠神经母细胞瘤细胞MAO活性的评估。

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摘要

Monoamine-oxidase catalyses the oxidative deamination of various primary amines such as norepinephrine, serotonin, dopamine and others. Such an enzyme exists under two well known isotypes, A and B. In the brain monoamine-oxidase activity increases with ageing. The present paper reports data regarding the evaluation on the activity of monoamine-oxidase A and B in murine neuroblastoma cells carried out by a radioassay upon acute or chronic treatment of cells by aluminium or tacrine. Our data show that aluminium has a pronounced activatory effect on both enzymatic isoforms either in acute or long-term adaptation treatment. Conversely, tacrine produces an inhibitory effect of both monoamine oxidase isotypes after an acute treatment, while an inhibitory effect on the isoform A and an activation of the isoform B in long-term adaptation was observed. Such effects are discussed in terms of aluminium neurotoxicity and therapeutic implications for tacrine.
机译:单胺氧化酶催化各种伯胺(如去甲肾上腺素,5-羟色胺,多巴胺等)的氧化脱氨作用。这种酶以两种众所周知的同种型A和B存在。在大脑中,单胺氧化酶活性随年龄增长而增加。本文报道了通过铝或他克林对细胞进行急性或慢性处理后,通过放射分析对鼠神经母细胞瘤细胞中单胺氧化酶A和B的活性进行评估的数据。我们的数据表明,铝在急性或长期适应治疗中对两种酶同工型均具有明显的活化作用。相反,他克林在急性治疗后产生两种单胺氧化酶同种型的抑制作用,而在长期适应中观察到对同种型A的抑制作用和同种型B的活化。就铝神经毒性及其对他克林的治疗意义进行了讨论。

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