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Neurogenesis in the adult human hippocampus

Abstract

The genesis of new cells, including neurons, in the adult human brain has not yet been demonstrated. This study was undertaken to investigate whether neurogenesis occurs in the adult human brain, in regions previously identified as neurogenic in adult rodents and monkeys. Human brain tissue was obtained postmortem from patients who had been treated with the thymidine analog, bromodeoxyuridine (BrdU), that labels DNA during the S phase. Using immunofluorescent labeling for BrdU and for one of the neuronal markers, NeuN, calbindin or neuron specific enolase (NSE), we demonstrate that new neurons, as defined by these markers, are generated from dividing progenitor cells in the dentate gyrus of adult humans. Our results further indicate that the human hippocampus retains its ability to generate neurons throughout life.

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Figure 1: Newly generated cells can be detected in the adult human brain in patients previously treated with BrdU.
Figure 2: Quantitation of newly generated cells in the adult human hippocampus.
Figure 3: Newly generated cells in the adult human dentate gyrus can express a neuronal phenotype.
Figure 4: Newly generated cells in the adult human dentate gyrus can express additional neuronal phenotypes.
Figure 5: Brightfield double-immunohistochemical demonstration of neuronal phenotype.

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Acknowledgements

We thank G. Kempermann, T. Palmer, E. Brandon, M.-C. Senut, K. Sakurada, L. Chehabeddine and M. L. Gage for their comments, and H. van Praag for the contribution of rat tissue. In addition, we thank L. Kitabayashi for technical assistance. This study was supported by grants from the Swedish Medical Research Council (project no. K98-12X-12535-01A), Faculty of Medicine, University of Göteborg, the Gunvor and Josef Anérs Stiftelse, the John and Brit Wennerströms Stiftelse for Neurologisk Forskning, the Rune and Ulla Amlövs Stiftelse for Neurologisk and Reumatologisk Forskning, NHR-fonden, Stiftelsen Göteborgs MS förenings forsknings och byggnadsfond, Stiftelsen Handlanden Hjalmar Svenssons Forskningsfond, Göteborgs Läkaresällskap, Hjärnfonden, The Swedish Society of Medicine, Stiftelsen Lars Hiertas Minne, Stiftelsen Assar Gabrielssons Fond and the Edit Jacobssons Fond and from NIA and NINDS and the Alzheimer's Association (F.H.G.) and the American Federation for Aging Research (D.A.P.).

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Eriksson, P., Perfilieva, E., Björk-Eriksson, T. et al. Neurogenesis in the adult human hippocampus. Nat Med 4, 1313–1317 (1998). https://doi.org/10.1038/3305

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