title: Prenatal stress induces schizophrenia-like alterations of serotonin 2A and metabotropic glutamate 2 receptors in the adult offspring: role of maternal immune system.
abstract: It has been suggested that severe adverse life events during pregnancy increase the risk of schizophrenia in the offspring. The serotonin 5-HT(2A) and the metabotropic glutamate 2 (mGlu2) receptors both have been the target of considerable attention regarding schizophrenia and antipsychotic drug development. We tested the effects of maternal variable stress during pregnancy on expression and behavioral function of these two receptors in mice. Prenatal stress increased 5-HT(2A) and decreased mGlu2 expression in frontal cortex, a brain region involved in perception, cognition, and mood. This pattern of expression of 5-HT(2A) and mGlu2 receptors was consistent with behavioral alterations, including increased head-twitch response to the hallucinogenic 5-HT(2A) agonist DOI [1-(2,5-dimethoxy-4-iodophenyl)-2-aminopropane] and decreased mGlu2-dependent antipsychotic-like effect of the mGlu2/3 agonist LY379268 (1R,4R,5S,6R-2-oxa-4-aminobicyclo[3.1.0]hexane-4,6-dicarboxylate) in adult, but not prepubertal, mice born to stressed mothers during pregnancy. Cross-fostering studies determined that these alterations were not attributable to effects of prenatal stress on maternal care. Additionally, a similar pattern of biochemical and behavioral changes were observed in mice born to mothers injected with polyinosinic:polycytidylic acid [poly(I:C)] during pregnancy as a model of prenatal immune activation. These data strengthen pathophysiological hypotheses that propose an early neurodevelopmental origin for schizophrenia and other psychiatric disorders.
authors: Department of Psychiatry, Mount Sinai School of Medicine, New York, New York 10029, USA.
authors: Terrell
authors: T
authors: Holloway
authors: José L
authors: JL
authors: Moreno
authors: Adrienne
authors: A
authors: Umali
authors: Vinayak
authors: V
authors: Rayannavar
authors: Georgia E
authors: GE
authors: Hodes
authors: Scott J
authors: SJ
authors: Russo
authors: Javier
authors: J
authors: González-Maeso
mesh_terms: D000818:Animals; D005260:Female; D005625:Frontal Lobe / Q000276:immunology / Q000378:metabolism*; D007107:Immune System / Q000378:metabolism*; D051379:Mice; D011247:Pregnancy; D011297:Prenatal Exposure Delayed Effects / Q000276:immunology / Q000378:metabolism*; D044402:Receptor, Serotonin, 5-HT2A / Q000235:genetics / Q000378:metabolism*; D018094:Receptors, Metabotropic Glutamate / Q000235:genetics / Q000378:metabolism*; D013312:Stress, Physiological / Q000276:immunology*
chemical_list: D044402:Receptor, Serotonin, 5-HT2A; D018094:Receptors, Metabotropic Glutamate; C108822:metabotropic glutamate receptor 2