PMID- 24780604 OWN - NLM STAT- MEDLINE DCOM- 20150804 LR - 20220310 IS - 1872-7131 (Electronic) IS - 0387-7604 (Linking) VI - 37 IP - 1 DP - 2015 Jan TI - Maternal viral infection during pregnancy impairs development of fetal serotonergic neurons. PG - 88-93 LID - S0387-7604(14)00084-9 [pii] LID - 10.1016/j.braindev.2014.03.007 [doi] AB - BACKGROUND: Maternal viral infection during pregnancy induces morphological abnormalities in the fetus and may cause emotional and psychological problems in offspring through unknown mechanisms. We have previously shown that prenatal exposure of rats to chemicals such as thalidomide causes an autistic-like phenotype in offspring, indicating that prenatal events affecting serotonergic development may cause developmental disorder. METHODS: We investigated whether prenatal viral infection altered the expression of neurotransmitters involved in the emotional or psychological status of offspring. We here took advantage of the polyriboinosinic:polyribocytidylic acid (poly I:C) system, the synthetic double-stranded RNA, which is often used in animal models of viral infection. RESULTS: Ten mg/kg of poly I:C was intraperitoneally injected on gestational day (GD) 9 and counted the numbers of serotonin-immunopositive cells on GD15 using flat whole-mount preparation method, resulting 11.1% of increase in the number of serotonergic neurons in poly I:C group. Furthermore, there was a significant decrease in hippocampal serotonin content in offspring by postnatal day 50 following poly I:C administration by high-performance liquid chromatography. DISCUSSION AND CONCLUSION: Since serotonin is known to link with behavior and emotion after birth, these results suggest that maternal viral infection might cause, in addition to morphological abnormalities, serotonin-related pathogenesis such as neurodevelopmental disorders including autism spectrum disorders. CI - Copyright (c) 2014 The Japanese Society of Child Neurology. Published by Elsevier B.V. All rights reserved. FAU - Ohkawara, Takeshi AU - Ohkawara T AD - Department of Developmental and Regenerative Medicine, Mie University, Graduate School of Medicine, Mie, Japan. Electronic address: tohkawara@doc.medic.mie-u.ac.jp. FAU - Katsuyama, Takashi AU - Katsuyama T AD - Department of Developmental and Regenerative Medicine, Mie University, Graduate School of Medicine, Mie, Japan. FAU - Ida-Eto, Michiru AU - Ida-Eto M AD - Department of Developmental and Regenerative Medicine, Mie University, Graduate School of Medicine, Mie, Japan. FAU - Narita, Naoko AU - Narita N AD - Department of Education, Bunkyo University, Saitama, Japan. FAU - Narita, Masaaki AU - Narita M AD - Department of Developmental and Regenerative Medicine, Mie University, Graduate School of Medicine, Mie, Japan. LA - eng PT - Journal Article DEP - 20140426 PL - Netherlands TA - Brain Dev JT - Brain & development JID - 7909235 RN - O84C90HH2L (Poly I-C) SB - IM MH - Animals MH - Brain/*pathology MH - Chromatography, High Pressure Liquid MH - Disease Models, Animal MH - Female MH - Fetus MH - In Situ Hybridization MH - Poly I-C/toxicity MH - Pregnancy MH - Pregnancy Complications, Infectious/*pathology MH - Prenatal Exposure Delayed Effects/*pathology MH - Rats MH - Rats, Wistar MH - Real-Time Polymerase Chain Reaction MH - Reverse Transcriptase Polymerase Chain Reaction MH - Serotonergic Neurons/*pathology MH - Virus Diseases/*complications OTO - NOTNLM OT - Autism OT - Maternal viral infection OT - Poly I:C OT - Serotonin EDAT- 2014/05/02 06:00 MHDA- 2015/08/05 06:00 CRDT- 2014/05/01 06:00 PHST- 2013/10/24 00:00 [received] PHST- 2014/03/12 00:00 [revised] PHST- 2014/03/12 00:00 [accepted] PHST- 2014/05/01 06:00 [entrez] PHST- 2014/05/02 06:00 [pubmed] PHST- 2015/08/05 06:00 [medline] AID - S0387-7604(14)00084-9 [pii] AID - 10.1016/j.braindev.2014.03.007 [doi] PST - ppublish SO - Brain Dev. 2015 Jan;37(1):88-93. doi: 10.1016/j.braindev.2014.03.007. Epub 2014 Apr 26.