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Redirection of neuroblast migration from the rostral migratory stream into a lesion in the prefrontal cortex of adult rats

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Abstract

Clinical treatment of structural brain damage today is largely limited to symptomatic approaches and the avoidance of secondary injury. However, neuronal precursor cells are constantly produced within specified regions of the mammalian brain throughout life. Here we evaluate the potential of the known chemoattractive properties of the glycoprotein laminin on neuroblasts to relocate the cells into damaged brain areas. Injection of a thin laminin tract, leading from the rostral migratory stream to an excitotoxic lesion within the medial prefrontal cortex of rats, enabled neuroblasts to migrate away from their physiological route towards the olfactory bulb into the lesion site. Once they reached the damaged tissue, they migrated further in a non-uniform orientation within the lesion. Furthermore, our data indicate that the process of diverted migration is still active 6 weeks after the treatment and that at least some of the neuroblasts are capable of maturing into adult neurons.

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(modified from Paxinos and Watson 1998)

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Acknowledgements

We want to thank Maja Brand for her excellent contribution to tissue processing and immunostaining.

Funding

This study was partly supported by the Tönjes-Vagt-Stiftung Bremen.

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Correspondence to Jannis Gundelach.

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The authors declare that they have no conflict of interest.

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All applicable international, national, and/or institutional guidelines for the care and use of animals were followed. All procedures performed in studies involving animals were in accordance with the ethical standards of the institution or practice at which the studies were conducted.

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Gundelach, J., Koch, M. Redirection of neuroblast migration from the rostral migratory stream into a lesion in the prefrontal cortex of adult rats. Exp Brain Res 236, 1181–1191 (2018). https://doi.org/10.1007/s00221-018-5209-3

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  • DOI: https://doi.org/10.1007/s00221-018-5209-3

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