期刊
SCIENTIFIC REPORTS
卷 8, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s41598-018-27626-4
关键词
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资金
- JSPS [16H06870, 17K11230]
- MSD Life Science Foundation, Public Interest Incorporated Foundation
- Grants-in-Aid for Scientific Research [17K11230, 16H06870] Funding Source: KAKEN
The aim of the present study was to investigate long-term outcomes of the offspring in a lipopolysaccharide (LPS)-induced maternal immune activation (MIA) model and the effect of maternal molecular hydrogen (H-2) administration. We have previously demonstrated in the MIA mouse model that maternal administration of H-2 attenuates oxidative damage and neuroinflammation, including induced pro-inflammatory cytokines and microglial activation, in the fetal brain. Short-term memory, sociability and social novelty, and sensorimotor gating were evaluated using the Y-maze, threechamber, and prepulse inhibition (PPI) tests, respectively, at postnatal 3 or 4 weeks. The number of neurons and oligodendrocytes was also analyzed at postnatal 5 weeks by immunohistochemical analysis. Offspring of the LPS-exposed dams showed deficits in short-term memory and social interaction, following neuronal and oligodendrocytic loss in the amygdala and cortex. Maternal H-2 administration markedly attenuated these LPS-induced abnormalities. Moreover, we evaluated the effect of H-2 on LPS-induced astrocytic activation, both in vivo and in vitro. The number of activated astrocytes with hypertrophic morphology was increased in LPS-exposed offspring, but decreased in the offspring of H-2-administered dams. In primary cultured astrocytes, LPS-induced pro-inflammatory cytokines were attenuated by H-2 administration. Overall, these findings indicate that maternal H-2 administration exerts neuroprotective effects and ameliorates MIA-induced neurodevelopmental deficits of offspring later in life.
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