Impaired Interneuron Development in a Novel Model of Neonatal Brain Injury

ENeuro
Helene LacailleAnna A Penn

Abstract

Prematurity is associated with significantly increased risk of neurobehavioral pathologies, including autism and schizophrenia. A common feature of these psychiatric disorders is prefrontal cortex (PFC) inhibitory circuit disruption due to GABAergic interneuron alteration. Cortical interneurons are generated and migrate throughout late gestation and early infancy, making them highly susceptible to perinatal insults such as preterm birth. Term and preterm PFC pathology specimens were assessed using immunohistochemical markers for interneurons. Based on the changes seen, a new preterm encephalopathy mouse model was developed to produce similar PFC interneuron loss. Maternal immune activation (MIA; modeling chorioamnionitis, associated with 85% of extremely preterm births) was combined with chronic sublethal hypoxia (CSH; modeling preterm respiratory failure), with offspring of both sexes assessed anatomically, molecularly and neurobehaviorally. In the PFC examined from the human preterm samples compared to matched term samples at corrected age, a decrease in somatostatin (SST) and calbindin (CLB) interneurons was seen in upper cortical layers. This pattern of interneuron loss in upper cortical layers was mimicked in the mouse PFC...Continue Reading

Citations

May 8, 2019·Nature Medicine·Anca M PașcaSergiu P Pașca
Dec 4, 2019·Psychological Medicine·Sharon K HunterAmanda J Law
Jan 14, 2021·The Journal of Maternal-fetal & Neonatal Medicine : the Official Journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians·Despina D Briana, Ariadne Malamitsi-Puchner
Jan 1, 2021·International Journal of Molecular Sciences·Josine E G VaesCora H Nijboer
Jun 3, 2021·International Journal of Molecular Sciences·Jae-Yeon Kim, Mercedes F Paredes

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BETA
PCR

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Imaris
GraphPad
PRISM

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