Long-term effects of the maternal deprivation on the volume and number of neurons in the rat neocortex and hippocampus

• Autorzy: Aksic M. , Radonjic N. V. , Aleksic D. , Jevtic G. , Markovic B. , Petronijevic N. , Radonjic V. , Filipovic B.
• Języki publikacji: EN

Abstrakty

EN

Maternal deprivation (MD) leads to a variety of behavioral changes in rats which closely resemble the symptoms of schizophrenia in humans. With the aim to investigate the morphological changes which underlie the behavioral insults in this experimental paradigm we exposed 9-day-old Wistar rats to a 24 h MD. At the period of young adulthood rats were sacrificed for morphometric analysis and their brains were compared to the control group. Rats exposed to MD had a decrease in hippocampal volume (71% of the control value) as well as a decrease in the size of pyramidal (62% of the control) and granular (60% of the control) cell layers. Also, there was a decrease in the thickness of the prefrontal, retrosplenial and motor cortex compared to the control group. Analysis of the density of NeuN-immunolabeled neurons revealed a reduction in retrosplenial and prefrontal cortex (70% and 81% of the control, respectively), while there was no difference in the motor cortex. Western blot analysis confirmed a decrease in NeuN expression in the MD group compared to the control rat brain homogenates. The results of this study show that early stress in life has a long-term effect on the morphology of cognitive brain regions, most probably due to the loss of neurons during postnatal development and further contributes to our understanding of the effects of maternal separation on brain development.

• Wydawca: -
• Czasopismo: Acta Neurobiologiae Experimentalis
• Rocznik: 2013
• Tom: 73
• Numer: 3
• Opis fizyczny: p.394-403,fig.,ref.

Twórcy

autor

Aksic M.

• Institute of Anatomy "Niko Miljanic", Faculty of Medicine, University Belgrade, Belgrade, Serbia

autor

Radonjic N. V.

• Institute of Clinical and Medical Biochemistry, Faculty of Medicine, University Belgrade, Belgrade, Serbia

autor

Aleksic D.

• Institute of Anatomy "Niko Miljanic", Faculty of Medicine, University Belgrade, Belgrade, Serbia

autor

Jevtic G.

• Institute of Clinical and Medical Biochemistry, Faculty of Medicine, University Belgrade, Belgrade, Serbia

autor

Markovic B.

• Institute of Anatomy "Niko Miljanic", Faculty of Medicine, University Belgrade, Belgrade, Serbia

autor

Petronijevic N.

• Institute of Clinical and Medical Biochemistry, Faculty of Medicine, University Belgrade, Belgrade, Serbia

autor

Radonjic V.

• Institute of Anatomy "Niko Miljanic", Faculty of Medicine, University Belgrade, Belgrade, Serbia

autor

Filipovic B.

• Institute of Anatomy "Niko Miljanic", Faculty of Medicine, University Belgrade, Belgrade, Serbia

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