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首页> 外文期刊>Journal of Experimental Neuroscience >Noradrenergic Modulation of Light-Driven Egr-1 Expression in the Adult Visual Cortex:
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Noradrenergic Modulation of Light-Driven Egr-1 Expression in the Adult Visual Cortex:

机译:成人视觉皮层中光驱动的Egr-1表达的去甲肾上腺素调节:

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Noradrenaline has been shown to modulate sensory driven responses in the primary visual cortex (V1) of a number of vertebrate species. Moreover, this neurotransmitter has been postulated to bridge neuronal activation to genomic responses in order to instruct cells in long-lasting changes in neuronal performance. Here we show that local noradrenergic receptor activation in V1 is required for experience-regulated gene expression in the mouse V1. More specifically, we demonstrate that noradrenaline used locally within V1 mediates the light-driven gene expression of egr-1, an immediate early gene implicated as a mediator of neuronal plasticity. Visually-driven egr-1 expression largely depends on the α-adrenergic receptor subtype, with a lesser involvement of the β-subtype. Our findings suggest that noradrenergic transmission regulates plasticity associated gene expression in V1 of awake mice and is well positioned to broadly integrate experience-dependent changes at the cell's membrane and the genomic machinery in neurons.
机译:已显示去甲肾上腺素可以调节许多脊椎动物物种的初级视觉皮层(V1)中的感觉驱动反应。而且,已经假定该神经递质将神经元激活桥接到基因组反应,以指导细胞神经元性能的长期变化。在这里我们显示,在小鼠V1中,经验调节基因表达需要V1中的局部去甲肾上腺素能受体激活。更具体地说,我们证明了在V1内局部使用的去甲肾上腺素介导egr-1的光驱动基因表达,egr-1是一个直接的早期基因,被认为是神经元可塑性的介质。视觉驱动的egr-1表达很大程度上取决于α-肾上腺素能受体亚型,而较少涉及β-亚型。我们的研究结果表明,去甲肾上腺素能传递可调节清醒小鼠V1中的可塑性相关基因表达,并且其位置优越,可广泛整合细胞膜和神经元基因组机制中经验依赖的变化。

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