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

Behavioural Brain Research
Iu A SukhanovaN G Levitskaya

Abstract

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 contro...Continue Reading

Citations

Dec 31, 2019·The European Journal of Neuroscience·Bérénice Le Dieu-LugonCarine Cleren
Aug 2, 2019·International Journal of Developmental Neuroscience : the Official Journal of the International Society for Developmental Neuroscience·Iu A SukhanovaN G Levitskaya
Dec 16, 2020·International Journal of Molecular Sciences·Márton Richárd SzabóCsaba Csonka
Jul 26, 2019·Neurobiology of Disease·Udaiyappan JanakiramanMark A Nelson

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