NDLI: The prenatal challenge with lipopolysaccharide and polyinosinic:polycytidylic acid disrupts CX3CL1-CX3CR1 and CD200-CD200R signalling in the brains of male rat offspring: a link to schizophrenia-like behaviours

Content Provider	Springer Nature : BioMed Central
Author	Chamera, Katarzyna Kotarska, Katarzyna Szuster-Głuszczak, Magdalena Trojan, Ewa Skórkowska, Alicja Pomierny, Bartosz Krzyżanowska, Weronika Bryniarska, Natalia Basta-Kaim, Agnieszka
Abstract	Background The bidirectional communication between neurons and microglia is fundamental for the homeostasis and biological function of the central nervous system. Maternal immune activation (MIA) is considered to be one of the factors affecting these interactions. Accordingly, MIA has been suggested to be involved in several neuropsychiatric diseases, including schizophrenia. The crucial regulatory systems for neuron-microglia crosstalk are the CX3CL1-CX3CR1 and CD200-CD200R axes. Methods We aimed to clarify the impact of MIA on CX3CL1-CX3CR1 and CD200-CD200R signalling pathways in the brains of male Wistar rats in early and adult life by employing two neurodevelopmental models of schizophrenia based on the prenatal challenge with lipopolysaccharide (LPS) and polyinosinic:polycytidylic acid (Poly I:C). We also examined the effect of MIA on the expression of microglial markers and the profile of cytokines released in the brains of young offspring, as well as the behaviour of adult animals. Moreover, we visualized the localization of ligand-receptor systems in the hippocampal regions (CA1, CA3 and DG) and the frontal cortex of young rats exposed to MIA. The differences between groups were analysed using Student’s t test. Results We observed that MIA altered developmental trajectories in neuron-microglia communication in the brains of young offspring, as evidenced by the disruption of CX3CL1-CX3CR1 and/or CD200-CD200R axes. Our data demonstrated the presence of abnormalities after LPS-induced MIA in levels of Cd40, Il-1β, Tnf-α, Arg1, Tgf-β and Il-10, as well as IBA1, IL-1β and IL-4, while after Poly I:C-generated MIA in levels of Cd40, iNos, Il-6, Tgf-β, Il-10, and IBA1, IL-1β, TNF-α, IL-6, TGF-β and IL-4 early in the life of male animals. In adult male rats that experienced prenatal exposure to MIA, we observed behavioural changes resembling a schizophrenia-like phenotype. Conclusions Our study provides evidence that altered CX3CL1-CX3CR1 and/or CD200-CD200R pathways, emerging after prenatal immune challenge with LPS and Poly I:C, might be involved in the aetiology of schizophrenia.
Related Links	https://jneuroinflammation.biomedcentral.com/counter/pdf/10.1186/s12974-020-01923-0.pdf
Ending Page	24
Page Count	24
Starting Page	1
File Format	HTM / HTML
ISSN	17422094
DOI	10.1186/s12974-020-01923-0
Journal	Journal of Neuroinflammation
Issue Number	1
Volume Number	17
Language	English
Publisher	BioMed Central
Publisher Date	2020-08-23
Access Restriction	Open
Subject Keyword	Neurosciences Neurology Neurobiology Immunology Maternal immune activation Lipopolysaccharide Polyinosinic:polycytidylic acid CX3CL1-CX3CR1 CD200-CD200R Microglia Schizophrenia
Content Type	Text
Resource Type	Article
Subject	Neuroscience Immunology Cellular and Molecular Neuroscience Neurology
Journal Impact Factor	9.3/2023
5-Year Journal Impact Factor	9.8/2023

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The prenatal challenge with lipopolysaccharide and polyinosinic:polycytidylic acid disrupts CX3CL1-CX3CR1 and CD200-CD200R signalling in the brains of male rat offspring: a link to schizophrenia-like behaviours