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- W4294843931 abstract "Abstract Maternal infection has emerged as an important environmental risk factor for neurodevelopmental disorders, including schizophrenia and autism spectrum disorders. Animal model systems of maternal immune activation (MIA) suggest that the maternal immune response plays a significant role in the neurodevelopment and behavioral outcomes of offspring. Extracellular free water is a measure of freely diffusing water in the brain that may be associated with neuroinflammation and impacted by MIA. The present study evaluates the brain diffusion characteristics of male rhesus monkeys ( Macaca mulatta ) born to MIA-exposed dams ( n = 14) treated with a modified form of the viral mimic polyinosinic:polycytidylic acid at the end of the first trimester. Control dams received saline injections at the end of the first trimester ( n = 10) or were untreated ( n = 4). Offspring underwent diffusion MRI scans at 6, 12, 24, 36, and 45 months of age. Offspring born to MIA-exposed dams showed significantly increased extracellular free water in cingulate cortex gray matter starting as early as 6 months of age and persisting through 45 months. Additionally, offspring gray matter free water in this region was significantly correlated with the magnitude of the maternal IL-6 response in the MIA-exposed dams. These findings provide strong evidence for the construct validity of the NHP MIA model as a system of relevance for investigations of the pathophysiology of human neurodevelopmental psychiatric disorders. Elevated free water in individuals exposed to immune activation in utero could represent an early marker of a perturbed or vulnerable neurodevelopmental trajectory." @default.
- W4294843931 created "2022-09-07" @default.
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- W4294843931 date "2022-09-06" @default.
- W4294843931 modified "2023-10-12" @default.
- W4294843931 title "Extracellular Free Water Elevations are Associated with Maternal Cytokine Response in a Nonhuman Primate Maternal Immune Activation Model" @default.
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- W4294843931 doi "https://doi.org/10.21203/rs.3.rs-2019576/v1" @default.
- W4294843931 hasPublicationYear "2022" @default.
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