- Title
- Low oxygen post conditioning prevents thalamic secondary neuronal loss caused by excitotoxicity after cortical stroke
- Creator
- Pietrogrande, Giovanni; Zalewska, Katarzyna; Zhao, Zidan; Abdolhoseini, Mahmoud; Chow, Wei Zhen; Sanchez-Bezanilla, Sonia; Ong, Lin Kooi; Johnson, Sarah J.; Nilsson, Michael; Walker, Frederick R.
- Relation
- Scientific Reports Vol. 9, no. 4841
- Publisher Link
- http://dx.doi.org/10.1038/s41598-019-39493-8
- Publisher
- Nature Publishing Group
- Resource Type
- journal article
- Date
- 2019
- Description
- In the current study, we were interested in investigating whether Low oxygen post-conditioning (LOPC) was capable of limiting the severity of stroke-induced secondary neurodegeneration (SND). To investigate the effect of LOPC we exposed adult male C57/BL6 mice to photothrombotic occlusion (PTO) of the motor and somatosensory cortex. This is known to induce progressive neurodegeneration in the thalamus within two weeks of infarction. Two days after PTO induction mice were randomly assigned to one of four groups: (i) LOPC-15 day exposure group; (ii) a LOPC 15 day exposure followed by a 15 day exposure to normal atmosphere; (iii) normal atmosphere for 15 days and (iv) normal atmosphere for 30 days (n = 20/group). We observed that LOPC reduced the extent of neuronal loss, as indicated by assessment of both area of loss and NeuN+ cell counts, within the thalamus. Additionally, we identified that LOPC reduced microglial activity and decreased activity within the excitotoxic signalling pathway of the NMDAR axis. Together, these findings suggest that LOPC limits neuronal death caused by excitotoxicity in sites of secondary damage and promotes neuronal survival. In conclusion, this work supports the potential of utilising LOPC to intervene in the sub-acute phase post-stroke to restrict the severity of SND.
- Subject
- stroke; neuronal death; neuroanl survival; low oxygen post-conditioning (LOPC)
- Identifier
- http://hdl.handle.net/1959.13/1424226
- Identifier
- uon:38037
- Identifier
- ISSN:2045-2322
- Rights
- © The Author(s) 2019. Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Cre-ative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not per-mitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
- Language
- eng
- Full Text
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