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Erschienen in: Metabolic Brain Disease 1/2021

Open Access 25.09.2020 | Original Article

Laterality and sex differences in the expression of brain-derived neurotrophic factor in developing rat hippocampus

verfasst von: Reza Sardar, Zahra Zandieh, Zeinab Namjoo, Mansoureh Soleimani, Reza Shirazi, Javad Hami

Erschienen in: Metabolic Brain Disease | Ausgabe 1/2021

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Abstract

Brain-derived neurotrophic factor (BDNF), as a member of neurotrophin family, plays an important role in neurogenesis, neuronal survival and synaptic plasticity. BDNF is strongly expressed in the hippocampus, where has been associated with memory consolidation, learning, and cognition. In this study, Real-time PCR, immunohistochemistry, and stereology were used to evaluate the gender differences and left-right asymmetries in the expression of BDNF in the developing rat hippocampus during the neurogenesis-active period, at postnatal days P0, P7 and P14. We found the lowest expression of BDNF in the right side and the highest in the left side hippocampi of both male and female neonates at P14 (P ≤ 0.05 each). At the same time, there were significant differences in the hippocampal expression of BDNF between males and females (P ≤ 0.05 each). No important differences in the number of BDNF expressing neurons in different subregions of right/left hippocampus were observed between male and female animals at P0 and P7 (P > 0.05). Furthermore, the highest numerical density of BDNF positive cells was detected in the both sides hippocampal CA1 in the male/female offspring at P7, and in the CA2, CA3 and dentate gyrus at P14 (P ≤ 0.05 each). Based on these findings, it can be concluded that there are prominent sex and interhemispheric differences in the expression of BDNF in the developing rat hippocampus, suggesting a probable mechanism for the control of gender and laterality differences in development, structure, and function of the hippocampus.
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Metadaten
Titel
Laterality and sex differences in the expression of brain-derived neurotrophic factor in developing rat hippocampus
verfasst von
Reza Sardar
Zahra Zandieh
Zeinab Namjoo
Mansoureh Soleimani
Reza Shirazi
Javad Hami
Publikationsdatum
25.09.2020
Verlag
Springer US
Erschienen in
Metabolic Brain Disease / Ausgabe 1/2021
Print ISSN: 0885-7490
Elektronische ISSN: 1573-7365
DOI
https://doi.org/10.1007/s11011-020-00620-4

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