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首页> 外文期刊>The European Journal of Neuroscience >Depression-like behaviour in neural cell adhesion molecule (NCAM)-deficient mice and its reversal by an NCAM-derived peptide, FGL.
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Depression-like behaviour in neural cell adhesion molecule (NCAM)-deficient mice and its reversal by an NCAM-derived peptide, FGL.

机译:神经细胞粘附分子(NCAM)缺陷小鼠中的抑郁样行为,以及NCAM衍生肽FGL的逆转作用。

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摘要

The neural cell adhesion molecule (NCAM) plays a pivotal role in brain plasticity. Brain plasticity itself has a crucial role in the development of depression. The aim of this study was to analyze whether NCAM-deficient (NCAM(-/-)) mice exhibit depression-like behaviour and whether a peptide termed FGL, derived from the NCAM binding site for the fibroblast growth factor (FGF) receptor, is able to reverse the depression-like signs in NCAM(-/-) mice. Our study showed that NCAM(-/-) mice demonstrated increased freezing time in the tail-suspension test and reduced preference for sucrose consumption in the sucrose preference test, reduced adult neurogenesis in the dentate gyrus and reduced levels of the phosphorylated cAMP response element-binding protein (pCREB) in the hippocampus. FGL administered acutely or repeatedly reduced depression-like behaviour in NCAM(-/-) mice without having an effect on their wild-type littermates. Repeated administration of FGL enhanced survival of the newly born neurons in NCAM(-/-) mice and increased the levels of pCREB in both NCAM(+/+) and NCAM(-/-) mice. In conclusion, our data demonstrate that NCAM deficiency in mice results in a depression-like phenotype which can be reversed by the acute or repeated administration of FGL. The results also suggest a role of the deficit in NCAM signalling through the FGF receptor in depression.
机译:神经细胞粘附分子(NCAM)在大脑可塑性中起关键作用。脑可塑性本身在抑郁症的发展中具有至关重要的作用。这项研究的目的是分析是否缺乏NCAM的(NCAM(-/-))小鼠表现出抑郁样的行为,以及是否衍生自成纤维细胞生长因子(FGF)受体NCAM结合位点的称为FGL的肽能够扭转NCAM(-/-)小鼠中的抑郁症样症状。我们的研究表明,NCAM(-/-)小鼠在尾部悬吊测试中显示了增加的冷冻时间,在蔗糖偏好测试中显示了对蔗糖消耗的偏好降低,在齿状回中减少了成年神经发生,并降低了磷酸化的cAMP反应元件-海马中的结合蛋白(pCREB)。 FGL急性或反复减少了NCAM(-/-)小鼠的抑郁样行为,而没有影响其野生型同窝仔。重复施用FGL可增强NCAM(-/-)小鼠中新生神经元的存活,并增加NCAM(+ / +)和NCAM(-/-)小鼠中pCREB的水平。总之,我们的数据表明,小鼠NCAM缺乏会导致抑郁样表型,急性或反复服用FGL可逆转这种表型。这些结果还表明,在抑郁症中,通过FGF受体的NCAM信号转导不足的作用。

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