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. 2020 Nov 6;10:19269. doi: 10.1038/s41598-020-76176-1

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© The Author(s) 2020

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 Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted 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 licence, visit http://creativecommons.org/licenses/by/4.0/.

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Running-induced proliferation and neurogenesis rescues the hippocampal injury-induced learning deficit. Runners with more BrdU-positive cells or BrdU-positive cells co-expressing NeuN in the dentate gyrus of vehicle-injected (a–b) and ET-1-injected (c–d) hippocampi were better able to learn and received fewer shocks on the final testing day of APA3 (mean ± SEM, n = 8/group; paired t-tests, comparing ET-1-injected and vehicle-injected control hippocampi of the same animal, and unpaired t-tests comparing treatments.