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Aging Specifically Impairs amnesiac-Dependent Memory in Drosophila.

机译:特定老化会损害果蝇的记忆缺失型记忆。

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Age-related memory impairment (AMI) is observed in many species. However, it is uncertain whether AMI results from a specific or a nonspecific decay in memory processing. In Drosophila, memory acquired after a single olfactory conditioning paradigm has three distinct phases: short-term memory (STM), middle-term memory (MTM), and longer-lasting anesthesia-resistant memory (ARM). Here, we demonstrate that age-related defects in olfactory memory are identical to those of the MTM mutant amnesiac (amn). Furthermore, amn flies do not exhibit an age-dependent decrease in memory, in contrast to other memory mutants. The absence of AMI in amn flies is restored by expression of an amn transgene predominantly in DPM cells. Thus, we propose that AMI in flies results from a specific decrease in amn-dependent MTM.
机译:在许多物种中观察到与年龄有关的记忆障碍(AMI)。但是,不确定AMI是由内存处理中的特定衰减还是非特定衰减引起的。在果蝇中,单一嗅觉调节范例后获得的记忆具有三个不同的阶段:短期记忆(STM),中期记忆(MTM)和持久的抗麻醉记忆(ARM)。在这里,我们证明嗅觉记忆中与年龄有关的缺陷与MTM突变型失忆症(amn)的缺陷相同。此外,与其他记忆突变体相比,羊蝇没有表现出年龄依赖性的记忆力下降。通过在DPM细胞中主要表达amn转基因,恢复了果蝇中AMI的缺失。因此,我们建议果蝇中的AMI是由依赖于氨基酸的MTM的特定减少导致的。

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