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@ARTICLE{BerdugoVega:144979,
author = {Berdugo-Vega, Gabriel and Arias-Gil, Gonzalo and
López-Fernández, Adrian and Artegiani, Benedetta and
Wasielewska, Joanna M and Lee, Chi-Chieh and Lippert,
Michael T and Kempermann, Gerd and Takagaki, Kentaroh and
Calegari, Federico},
title = {{I}ncreasing neurogenesis refines hippocampal activity
rejuvenating navigational learning strategies and contextual
memory throughout life.},
journal = {Nature Communications},
volume = {11},
number = {1},
issn = {2041-1723},
address = {[London]},
publisher = {Nature Publishing Group UK},
reportid = {DZNE-2020-00343},
pages = {135},
year = {2020},
abstract = {Functional plasticity of the brain decreases during ageing
causing marked deficits in contextual learning, allocentric
navigation and episodic memory. Adult neurogenesis is a
prime example of hippocampal plasticity promoting the
contextualisation of information and dramatically decreases
during ageing. We found that a genetically-driven expansion
of neural stem cells by overexpression of the cell cycle
regulators Cdk4/cyclinD1 compensated the age-related decline
in neurogenesis. This triggered an overall inhibitory effect
on the trisynaptic hippocampal circuit resulting in a
changed profile of CA1 sharp-wave ripples known to underlie
memory consolidation. Most importantly, increased
neurogenesis rescued the age-related switch from hippocampal
to striatal learning strategies by rescuing allocentric
navigation and contextual memory. Our study demonstrates
that critical aspects of hippocampal function can be
reversed in old age, or compensated throughout life, by
exploiting the brain's endogenous reserve of neural stem
cells.},
keywords = {Aging: physiology / Animals / Cyclin D1: metabolism /
Cyclin-Dependent Kinase 4: metabolism / Female /
Hippocampus: physiology / Learning: physiology / Memory:
physiology / Memory Consolidation: physiology / Mice / Mice,
Inbred C57BL / Neural Stem Cells: physiology / Neurogenesis:
physiology / Ccnd1 protein, mouse (NLM Chemicals) / Cyclin
D1 (NLM Chemicals) / Cdk4 protein, mouse (NLM Chemicals) /
Cyclin-Dependent Kinase 4 (NLM Chemicals)},
cin = {AG Kempermann},
ddc = {500},
cid = {I:(DE-2719)1710001},
pnm = {342 - Disease Mechanisms and Model Systems (POF3-342)},
pid = {G:(DE-HGF)POF3-342},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:31919362},
pmc = {pmc:PMC6952376},
doi = {10.1038/s41467-019-14026-z},
url = {https://pub.dzne.de/record/144979},
}