RT Journal Article SR Electronic T1 The Time of Prenatal Immune Challenge Determines the Specificity of Inflammation-Mediated Brain and Behavioral Pathology JF The Journal of Neuroscience JO J. Neurosci. FD Society for Neuroscience SP 4752 OP 4762 DO 10.1523/JNEUROSCI.0099-06.2006 VO 26 IS 18 A1 Meyer, Urs A1 Nyffeler, Myriel A1 Engler, Andrea A1 Urwyler, Adrian A1 Schedlowski, Manfred A1 Knuesel, Irene A1 Yee, Benjamin K. A1 Feldon, Joram YR 2006 UL http://www.jneurosci.org/content/26/18/4752.abstract AB Disturbance to early brain development is implicated in several neuropsychiatric disorders including autism, schizophrenia, and mental retardation. Epidemiological studies have indicated that the risk of developing these disorders is enhanced by prenatal maternal infection, presumably as a result of neurodevelopmental defects triggered by cytokine-related inflammatory events. Here, we demonstrate that the effects of maternal immune challenge between middle and late gestation periods in mice are dissociable in terms of fetal brain cytokine responses to maternal inflammation and the pathological consequences in brain and behavior. Specifically, the relative expression of pro- and anti-inflammatory cytokines in the fetal brains in response to maternal immune challenge may be an important determinant among other developmental factors for the precise pathological profile emerging in later life. Thus, the middle and late gestation periods correspond to two windows with differing vulnerability to adult behavioral dysfunction, brain neuropathology in early adolescence, and of the acute cytokine responses in the fetal brain.