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Please use this identifier to cite or link to this item: http://hdl.handle.net/10564/3760

Title: Spreading depression and focal venous cerebral ischemia enhance cortical neurogenesis.
Other Titles: Spreading depressionと局所虚血刺激による大脳皮質領域の神経細胞新生
Authors: Tamaki, Ryo
Orie, Samuel Ige
Alessandri, Beat
Kempski, Oliver
Heimann, Axel
Keywords: nerve regeneration
cortical spreading depression
two-vein occlusion
adult neurogenesis
stem cells
cerebral cortex
neural precursor cells
neuron
penumbra
neural regeneration
Issue Date: Aug-2017
Publisher: Wolters Kluwer Health / Medknow
Citation: Neural regeneration research Vol.12 No.8 p.1278-1286 (2017 Aug)
Abstract: Endogenous neurogenesis can arise from a variety of physiological stimuli including exercise, learning, or “enriched environment” as well as pathological conditions such as ischemia, epilepsy or cortical spreading depression. Whether all these conditions use a common trigger to set off endogenous neurogenesis is yet unclear. We hypothesized that cortical spreading depression (CSD) induces neurogenesis in the cerebral cortex and dentate gyrus after cerebral venous ischemia. Forty-two Wistar rats alternatively underwent sham operation (Sham), induction of ten CSDs or venous ischemia provoked via occlusion of two adjacent superficial cortical vein followed by ten induced CSDs (CSD + 2-VO). As an additional control, 15 naïve rats received no intervention except 5-bromo-2′-deoxyuridine (BrdU) treatment for 7 days. Sagittal brain slices (40 μm thick) were co-stained for BrdU and doublecortin (DCX; new immature neuronal cells) on day 9 or NeuN (new mature neuronal cells) on day 28. On day 9 after sham operation, cell proliferation and neurogenesis occurred in the cortex in rats. The sole induction of CSD had no effect. But on days 9 and 28, more proliferating cells and newly formed neurons in the ipsilateral cortex were observed in rats subjected to CSD + 2VO than in rats subjected to sham operation. On days 9 and 28, cell proliferation and neurogenesis in the ipsilateral dentate gyrus was increased in sham-operated rats than in naïve rats. Our data supports the hypothesis that induced cortical neurogenesis after CSD + 2-VO is a direct effect of ischemia, rather than of CSD alone.
Description: 博士(医学)・乙第1459号・令和2年6月30日
Open access statement: This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 License(https://creativecommons.org/licenses/by-nc-sa/3.0/), which allows others to remix, tweak, and build upon the work non-commercially, as long as the author is credited and the new creations are licensed under the identical terms.
URI: http://hdl.handle.net/10564/3760
ISSN: 16735374
Academic Degrees and number: 24601B1459
Degree-granting date: 2020-06-30
Degree name: 博士(医学)
Degree-granting institutions: 奈良県立医科大学
Appears in Collections:2020年度

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