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- W2893120722 abstract "Maternal immune activation (MIA) with the viral mimic poly I:C provides an established rodent model for studying schizophrenia (SZ) and other human neurodevelopmental disorders. Postnatal infections are additional risk factors in SZ and may cumulatively contribute to the emergence of pathophysiology. Underlying mechanisms may involve metabolites of the kynurenine pathway (KP) of tryptophan degradation, which is readily induced by inflammatory stimuli. Here we compared the expression of selected cytokines and KP enzymes, and the levels of selected KP metabolites, in the brain of MIA offspring following a second, acute immune challenge with lipopolysaccharides (LPS) on postnatal day (PND) 35 (adolescence) or PND 60 (early adulthood). Assessed in adolescence, MIA did not alter the expression of pro-inflammatory cytokines (except TNF-α) or KP metabolite levels compared to controls, but substantially reduced the expression of the anti-inflammatory cytokines IL-4 and IL-10 and influenced the expression of two of the four KP enzymes examined (IDO1 and TDO2). LPS treatment caused distinct changes in the expression of pro- and anti-inflammatory cytokines, as well as KP enzymes in MIA offspring, but had no effect on KP metabolites compared to control rats. Several of these effects were blunted in MIA offspring receiving LPS on PND 60. Notably, LPS caused a significant reduction in brain kynurenine levels in these animals. Of relevance for SZ-related hypotheses, these results indicate that MIA leads to an increasingly defective, rather than an overactive, immune regulation of cerebral KP metabolism during the postnatal period." @default.
- W2893120722 created "2018-10-05" @default.
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- W2893120722 creator A5049171963 @default.
- W2893120722 creator A5050632840 @default.
- W2893120722 creator A5065349385 @default.
- W2893120722 date "2019-03-01" @default.
- W2893120722 modified "2023-10-18" @default.
- W2893120722 title "Maternal immune activation in rats blunts brain cytokine and kynurenine pathway responses to a second immune challenge in early adulthood" @default.
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- W2893120722 doi "https://doi.org/10.1016/j.pnpbp.2018.09.011" @default.
- W2893120722 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6249106" @default.
- W2893120722 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30267854" @default.
- W2893120722 hasPublicationYear "2019" @default.
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