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Early life stress decreases the proliferation and numbers of adult hypothalamic neural stem cells

Pascal Bielefeld, Maralinde R. Abbink, Anna R. Davidson, Paul J. Lucassen, Aniko Korosi, Carlos P. Fitzsimons
doi: https://doi.org/10.1101/831446
Pascal Bielefeld
Swammerdam Institute for Life Sciences, Faculty of Science, University of Amsterdam Science Park 904, 1098XH Amsterdam, The Netherlands
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Maralinde R. Abbink
Swammerdam Institute for Life Sciences, Faculty of Science, University of Amsterdam Science Park 904, 1098XH Amsterdam, The Netherlands
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Anna R. Davidson
Swammerdam Institute for Life Sciences, Faculty of Science, University of Amsterdam Science Park 904, 1098XH Amsterdam, The Netherlands
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Paul J. Lucassen
Swammerdam Institute for Life Sciences, Faculty of Science, University of Amsterdam Science Park 904, 1098XH Amsterdam, The Netherlands
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Aniko Korosi
Swammerdam Institute for Life Sciences, Faculty of Science, University of Amsterdam Science Park 904, 1098XH Amsterdam, The Netherlands
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Carlos P. Fitzsimons
Swammerdam Institute for Life Sciences, Faculty of Science, University of Amsterdam Science Park 904, 1098XH Amsterdam, The Netherlands
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  • For correspondence: c.p.fitzsimons@uva.nl
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Abstract

Early life stress (ELS) is a potent environmental factor that can confer enduring effects on brain structure and function. Exposure to stress during early life has been linked to a wide range of physiopathological consequences later in life. In particular, ELS has been shown to have lasting effects on neurogenesis in the adult brain, suggesting that ELS is a significant regulator of adult neural stem cell function. Here, we investigated the effect of ELS on the numbers and proliferation of neural stem cells in the hypothalamus of adult mice. We show that ELS has long term negative effects on hypothalamic neural stem cell numbers and on their proliferation. Specifically, ELS reduced the total numbers of PCNA+ cells present in hypothalamic areas surrounding the 3rd ventricle; the numbers of PCNA+/Sox2+/Nestin-GFP+ cells present in the medial eminence at the base of the 3rd ventricle; and the number of β-tanycytes around the ventral 3rd ventricle, without affecting the numbers of α-tanycytes in more dorsal areas. These results suggest that a reduction of proliferation and tanycyte numbers contributes to the effects of ELS on the hypothalamus and its consequent physiological alterations.

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Posted November 05, 2019.
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Early life stress decreases the proliferation and numbers of adult hypothalamic neural stem cells
Pascal Bielefeld, Maralinde R. Abbink, Anna R. Davidson, Paul J. Lucassen, Aniko Korosi, Carlos P. Fitzsimons
bioRxiv 831446; doi: https://doi.org/10.1101/831446
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Early life stress decreases the proliferation and numbers of adult hypothalamic neural stem cells
Pascal Bielefeld, Maralinde R. Abbink, Anna R. Davidson, Paul J. Lucassen, Aniko Korosi, Carlos P. Fitzsimons
bioRxiv 831446; doi: https://doi.org/10.1101/831446

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