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Optical inhibition of striatal neurons promotes focal neurogenesis and neurobehavioral recovery in mice after middle cerebral artery occlusion.

ABSTRACT: Striatal neurons regulate the activity of neural progenitor cells in the subventricular zone, but the effect of striatal neuronal activity on neurogenesis after ischemic stroke is unclear. In this study, we used optogenetic tools to investigate the impact of striatal neuronal activity on the neurogenesis and functional recovery after cerebral ischemia. We transfected striatal neurons with channelrhodopsin-2 or halorhodopsin from Natronomonas so that they can be excited by 473?nm laser or inhibited by 594?nm laser, respectively. Neural inhibition but not excitation at 4-7 days after middle cerebral artery occlusion resulted in reduced atrophy volume (6.8?±?0.7 vs 8.5?±?1.2?mm3, p?+, BrdU+/doublecortin+ and BrdU+/NeuN+ cells ( p?

SUBMITTER: He X 

PROVIDER: S-EPMC5363463 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature

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Optical inhibition of striatal neurons promotes focal neurogenesis and neurobehavioral recovery in mice after middle cerebral artery occlusion.

He Xiaosong X   Lu Yifan Y   Lin Xiaojie X   Jiang Lu L   Tang Yaohui Y   Tang Guanghui G   Chen Xiaoyan X   Zhang Zhijun Z   Wang Yongting Y   Yang Guo-Yuan GY  

Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism 20160720 3

Striatal neurons regulate the activity of neural progenitor cells in the subventricular zone, but the effect of striatal neuronal activity on neurogenesis after ischemic stroke is unclear. In this study, we used optogenetic tools to investigate the impact of striatal neuronal activity on the neurogenesis and functional recovery after cerebral ischemia. We transfected striatal neurons with channelrhodopsin-2 or halorhodopsin from Natronomonas so that they can be excited by 473 nm laser or inhibit  ...[more]

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