Gender-dependent changes in physical development, BDNF content and GSH redox system in a model of acute neonatal hypoxia in rats.

Autor: Sukhanova IA; Lomonosov Moscow State University, Biology Faculty, Moscow, Russia; Federal State Budget Institution 'Research Centre for Obstetrics Gynaecology and Perinatology' Ministry of Healthcare and Social Development of the Russian Federation, Moscow, Russia. Electronic address: sukhanova.iuliia.2014@post.bio.msu.ru., Sebentsova EA; Institute of Molecular Genetics, Russian Academy of Science, Moscow, Russia., Khukhareva DD; Lomonosov Moscow State University, Biology Faculty, Moscow, Russia., Manchenko DM; Lomonosov Moscow State University, Biology Faculty, Moscow, Russia., Glazova NY; Institute of Molecular Genetics, Russian Academy of Science, Moscow, Russia., Vishnyakova PA; Federal State Budget Institution 'Research Centre for Obstetrics Gynaecology and Perinatology' Ministry of Healthcare and Social Development of the Russian Federation, Moscow, Russia., Inozemtseva LS; Institute of Molecular Genetics, Russian Academy of Science, Moscow, Russia., Dolotov OV; Institute of Molecular Genetics, Russian Academy of Science, Moscow, Russia., Vysokikh MY; Federal State Budget Institution 'Research Centre for Obstetrics Gynaecology and Perinatology' Ministry of Healthcare and Social Development of the Russian Federation, Moscow, Russia., Levitskaya NG; Lomonosov Moscow State University, Biology Faculty, Moscow, Russia; Institute of Molecular Genetics, Russian Academy of Science, Moscow, Russia.
Jazyk: angličtina
Zdroj: Behavioural brain research [Behav Brain Res] 2018 Sep 17; Vol. 350, pp. 87-98. Date of Electronic Publication: 2018 May 16.
DOI: 10.1016/j.bbr.2018.05.008
Abstrakt: Perinatal hypoxia-ischaemia is one of the leading factors that negatively influence the development of the central nervous system. Our aim was to investigate the effects of sex on the outcomes of acute neonatal hypoxia (ANH) in rat pups. Male and female Wistar rats were exposed to a hypoxic condition (8% oxygen for 120 min) at postnatal day 2 (P2). Immediately after ANH an increase in HIF1-α gene expression was observed in the rat brains, independently of sex. Brain-derived neurotrophic factor (BDNF) and glutathione peroxidase-4 gene expression was increased in female animals only. Hypoxic pups of both sexes showed a decreased reduced/oxidised glutathione (GSH/GSSG) ratio in the blood and only males had an increased GSH content in the whole brain immediately after hypoxia. Furthermore, an increased BDNF content in the brain was found in both male and female rat pups at 0 h and in serum 4 h after hypoxia, but at 4 h after hypoxia only males had an increased BDNF level in the brain. Only hypoxic males displayed retarded performance in the righting reflex, but in a negative geotaxis test hypoxic pups of both sexes had an increased turnaround time. Moreover, hypoxic female but not male pups demonstrated less weight gain than control littermates for the entire observation period (until P18). These results demonstrate that ANH at P2 leads to both molecular and physiological impairments in a sex-specific manner and the described model could be used to represent mild hypoxic brain damage in very preterm infants.
(Copyright © 2018 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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