The emerging roles of melanopsin in behavioral adaptation to light.

The emerging roles of melanopsin in behavioral adaptation to light.
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DOI:
10.1016/j.molmed.2010.07.005
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发表时间:
2010-10
影响因子:
13.6
通讯作者:
Panda S
Panda S
中科院分区:
医学1区
文献类型:
--
作者:
Hatori M;Panda S

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行为和生理对环境光水平变化的适应对生命至关重要。这些适应包括神经内分泌功能的光调节以及生理和行为与昼夜节律时钟的昼夜周期的时间对齐。这些非成像(NIF)反应可以独立于视杆和视锥光感受器发挥作用,但取决于眼睛的光接收,这表明眼睛中的新型光感受器的参与。黑视素在视网膜神经节细胞(ipRGC)中的发现及其在主要NIF反应中的重要作用的遗传证据为理解哺乳动物如何适应光环境提供了一个令人兴奋的切入点。在这里,我们回顾了最近的进展,我们的理解的新兴作用的黑视素和ipRGC。这些发现现在提供了新的途径来了解环境光在睡眠,警觉性,依赖性生理学和潜在的药理学干预以及生活方式改变中的作用,以提高生活质量。
Adaptation of behavior and physiology to changes in the ambient light level is of critical importance to life. These adaptations include light modulation of neuroendocrine function and temporal alignment of physiology and behavior to the day:night cycle by the circadian clock. These non-image forming (NIF) responses can function independent of rod and cone photoreceptors but depend on ocular light reception, suggesting the participation of novel photoreceptors in the eye. The discovery of melanopsin in intrinsically photosensitive retinal ganglion cells (ipRGCs) and genetic proof for its important role in major NIF responses have offered an exciting entry point to comprehend how mammals adapt to the light environment. Here, we review the recent advances in our understanding of the emerging roles of melanopsin and of ipRGCs. These findings now offer new avenues to understand the role of ambient light in sleep, alertness, dependent physiologies and potential pharmacological intervention as well as lifestyle modifications to improve the quality of life.
外丛状层中的双极细胞突触上的异位视网膜:与多巴胺能小链氨酸细胞和黑色素蛋白神经节细胞的接触。
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