論文

査読有り 国際誌
2019年1月23日

The dynamics of revascularization after white matter infarction monitored in Flt1-tdsRed and Flk1-GFP mice.

Neuroscience letters
  • Hiroya Shimauchi-Ohtaki
  • ,
  • Masashi Kurachi
  • ,
  • Masae Naruse
  • ,
  • Koji Shibasaki
  • ,
  • Shouta Sugio
  • ,
  • Ken Matsumoto
  • ,
  • Masatsugu Ema
  • ,
  • Yuhei Yoshimoto
  • ,
  • Yasuki Ishizaki

692
開始ページ
70
終了ページ
76
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1016/j.neulet.2018.10.057
出版者・発行元
Elsevier BV

Subcortical white matter infarction causes ischemic demyelination and loss of brain functions, as the result of disturbances of the blood flow. Although angiogenesis is one of the recovery processes after cerebral infarction, the dynamics of revascularization after white matter infarction still remains unclear. We induced white matter infarction in the internal capsule of Flk1-GFP::Flt1-tdsRed double transgenic mice by injection of endothelin-1 (ET-1), a vasoconstrictor peptide, together with N(G)-nitro-L-arginine methyl ester (L-NAME), a nitric oxide synthase inhibitor, and followed the changes in Flk1 and Flt1 expression in the vascular system in the infarct area. Reduction of Flt1-tdsRed-positive blood vessels 1 day after the injection and increase of Flk1-GFP-strongly-positive blood vessels 3 days after the injection were apparent. PDGFRβ-strongly-positive (PDGFRβ+) cells appeared in the infarct area 3 days after the injection and increased their number thereafter. Three days after the injection, most of these cells were in close contact with Flk1-GFP-positive endothelial cells, indicating these cells are bona fide pericytes. Seven days after the injection, the number of PDGFRβ+ cells increased dramatically, and the vast majority of these cells were not in close contact with Flk1-GFP-positive endothelial cells. Taken together, our results suggest revascularization begins early after the ischemic insult, and the emerging pericytes first ensheath blood vessels and then produce fibroblast-like cells not directly associated with blood vessels.

リンク情報
DOI
https://doi.org/10.1016/j.neulet.2018.10.057
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/30389418
ID情報
  • DOI : 10.1016/j.neulet.2018.10.057
  • ISSN : 0304-3940
  • PubMed ID : 30389418

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