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Long-term treatment with olanzapine increases the number of Sox2 and doublecortin expressing cells in the adult subventricular zone

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  • Barbara Lasut
  • Artur Palasz
  • Lukasz Filipczyk
  • Oscar Arias-Carrión
  • Ewa Rojczyk
  • Mariia Savchyna
  • Katarzyna Bogus
  • John Joseph Worthington
  • Marek Krzystanek
  • Ryszard Wiaderkiewicz
<mark>Journal publication date</mark>2018
<mark>Journal</mark>CNS & neurological disorders drug targets
Issue number6
Number of pages6
Pages (from-to)458-463
Publication StatusPublished
Early online date26/06/18
<mark>Original language</mark>English


Continuously active neurogenic regions in the adult brain are located in the subventricular zone (SVZ) of the lateral ventricles and subgranular zone (SGZ) of the hippocampal dentate gyrus. Neurogenesis is modulated by many factors such as growth factors, neurotransmitters and hormones. Neuropsychiatric drugs, especially antidepressants, mood stabilizers and antipsychotics may also affect the origin of neuronal cells. The purpose of this study was to determine the effects of chronic olanzapine treatment on adult rat neurogenesis at the level of the SVZ. The number of neuroblasts was evaluated using immunohistochemical and fluorescent detection of sex determining region Y-box 2 (Sox-2) and doublecortin (DCX) expressing cells. The results indicate that olanzapine has proneurogenic effects in the adult rat SVZ, as the mean number of sex determining region Y-box 2 (Sox-2) and doublecortin-positive cells increased significantly, while there was a similar tendency in the subgranular zone SGZ. Collectively, these results suggest that long-term treatment with olanzapine may stimulate neurogenic stem cell formation in the SVZ which supports adult neurogenesis.

Bibliographic note

The published manuscript is available at EurekaSelect via http://www.eurekaselect.com/openurl/content.php?genre=article&doi=10.2174/1871527317666180627113544