Specific Features of SVZ Neurogenesis After Cortical Ischemia: a Longitudinal Study

Overview

Journal Sci Rep

Specialty Science

Date 2017 Nov 29

PMID 29180821

Citations 24

Authors

S Palma-Tortosa

A Garcia-Culebras

A Moraga

O Hurtado

A Perez-Ruiz

V Duran-Laforet

J de la Parra

M I Cuartero

J M Pradillo

M A Moro

I Lizasoain

Affiliations

Soon will be listed here.

Abstract

Stroke is a devastating disease with an increasing prevalence. Part of the current development in stroke therapy is focused in the chronic phase, where neurorepair mechanisms such as neurogenesis, are involved. In the adult brain, one of the regions where neurogenesis takes place is the subventricular zone (SVZ) of the lateral ventricles. Given the possibility to develop pharmacological therapies to stimulate this process, we have performed a longitudinal analysis of neurogenesis in a model of cortical ischemia in mice. Our results show an initial decrease of SVZ proliferation at 24 h, followed by a recovery leading to an increase at 14d and a second decrease 28d after stroke. Coinciding with the 24 h proliferation decrease, an increase in the eutopic neuroblast migration towards the olfactory bulb was observed. The analysis of the neuroblast ectopic migration from the SVZ toward the lesion showed an increase in this process from day 14 after the insult. Finally, our data revealed an increased number of new cortical neurons in the peri-infarct cortex 65d after the insult. In summary, we report here critical check-points about post-stroke neurogenesis after cortical infarcts, important for the pharmacological modulation of this process in stroke patients.

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