@article{ref1,
title="Dysfunctional mesocortical dopamine circuit at pre-adolescence is associated to aggressive behavior in MAO-A hypomorphic mice exposed to early life stress",
journal="Neuropharmacology",
year="2019",
author="Frau, Roberto and Fanni, Silvia and Serra, Valeria and Simola, Nicola and Godar, Sean and Traccis, Francesco and Devoto, Paola and Bortolato, Marco and Melis, Miriam",
volume="ePub",
number="ePub",
pages="ePub-ePub",
abstract="Aggressive behavior (AB) is a multifaceted disorder based on the interaction between genetic and environmental factors whose underlying mechanisms remain elusive. The best-characterized gene by environment (GxE) interaction for AB is the relationship between child neglect/abuse and low-activity alleles of the monoamine-oxidase A (MAOA) gene. MAOA oxidizes monoamines like serotonin and dopamine, whose aberrant signaling at discrete developmental ages plays a pivotal role in the ontogeny of AB. Here, we investigated the impact of this GxE on dopamine function at pre-adolescence by exposing hypomorphic MAOA (MAO<sup>Neo</sup>) mice to early life stress (ES) and by performing behavioral and ex vivo electrophysiological analyses in the ventral tegmental area (VTA) and the prefrontal cortex (PFC). MAOA<sup>Neo</sup> ES mouse dopamine neurons exhibited an enhanced post-synaptic responsiveness to excitatory inputs, aberrant plasticity in the PFC, and an AB. Systemic administration of the selective antagonist at dopamine D1 receptors SCH23390 fully restored PFC function and rescued AB. Collectively, these findings reveal that dysfunctional mesocortical dopamine signaling at pre-adolescence ties to AB in the MAOA<sup>Neo</sup> ES mouse, and identify dopamine D1 receptor as a molecular target to be exploited for an age-tailored therapy.<br><br>Copyright © 2019. Published by Elsevier Ltd.<p /> <p>Language: en</p>",
language="en",
issn="0028-3908",
doi="10.1016/j.neuropharm.2019.01.032",
url="http://dx.doi.org/10.1016/j.neuropharm.2019.01.032"
}