Academic Journal
The tight junction protein occludin modulates blood–brain barrier integrity and neurological function after ischemic stroke in mice
| العنوان: | The tight junction protein occludin modulates blood–brain barrier integrity and neurological function after ischemic stroke in mice |
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| المؤلفون: | Shintaro Sugiyama, Tsutomu Sasaki, Hiroo Tanaka, Haomin Yan, Takeshi Ikegami, Hideaki Kanki, Kumiko Nishiyama, Goichi Beck, Yasufumi Gon, Shuhei Okazaki, Kenichi Todo, Atsushi Tamura, Sachiko Tsukita, Hideki Mochizuki |
| المصدر: | Scientific Reports, Vol 13, Iss 1, Pp 1-12 (2023) |
| بيانات النشر: | Nature Portfolio, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Medicine LCC:Science |
| مصطلحات موضوعية: | Medicine, Science |
| الوصف: | Abstract Blood–brain barrier (BBB) disruption contributes to brain injury and neurological impairment. Tight junctions (TJs) and cell–cell adhesion complexes develop between endothelial cells in the brain to establish and maintain the BBB. Occludin, the first transmembrane protein identified in TJs, has received intense research interest because numerous in vitro studies have suggested its importance in maintaining BBB integrity. However, its role in maintaining BBB integrity after ischemic stroke is less clear owing to the lack of in vivo evidence. This study aimed to investigate the dynamics and function of occludin across the acute and chronic phases after stroke using occludin-deficient mice. By photochemically induced thrombosis model, the expression of occludin was decreased in brain endothelial cells from ischemic lesions. The neurological function of occludin-deficient mice was continuously impaired compared to that of wild-type mice. BBB integrity evaluated by Evans blue and 0.5-kDa fluorescein in the acute phase and by 10-kDa fluorescein isothiocyanate-labeled dextran in the chronic phase was decreased to a greater extent after stroke in occludin-deficient mice. Furthermore, occludin-deficient mice showed decreased claudin-5 and neovascularization after stroke. Our study reveals that occludin plays an important role from the acute to the chronic phase after ischemic stroke in vivo. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2045-2322 |
| Relation: | https://doaj.org/toc/2045-2322 |
| DOI: | 10.1038/s41598-023-29894-1 |
| URL الوصول: | https://doaj.org/article/41678653a17c4fecad0c010b521563ea |
| رقم الانضمام: | edsdoj.41678653a17c4fecad0c010b521563ea |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 20452322 |
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| DOI: | 10.1038/s41598-023-29894-1 |