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Jacques Barik

As seen in: Nature, Cell Press
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Articles

Ventral tegmental area circuits in defensive states: Emerging mechanisms of fear and anxiety

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By Joana Gomes-Ribeiro, Jacques Barik, Sebastián Fernández
| Cell Press Verified
ReviewOnline nowOpen access Affiliations & Notes 1Université Côte d’Azur, Nice, France 2Institut de Pharmacologie Moléculaire et Cellulaire, CNRS UMR7275, Valbonne, France 3Inserm U1323, Valbonne, France Article Info Publication History: Published online July 7, 2026 DOI: 10.1016/j.tins.2026.06.008 External LinkAlso available on ScienceDirect External Link Copyright: © 2026 The Authors. Published by Elsevier Ltd.
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Adolescent nicotine exposure and persistent neurocircuitry changes: unveiling lifelong psychiatric risks - Molecular Psychiatry

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By Lauren Reynolds, Jacques Barik
| Nature Verified
Abstract Nicotine exposure during adolescence has emerged as a significant risk factor for later psychiatric disease. Notably, adolescence is a critical period for the maturation of acetylcholine and dopamine systems, neuromodulators which tightly regulate cognitive, motivational and emotional behaviors known to contribute to psychiatric vulnerability.
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Transient nicotine exposure in early adolescent male mice freezes their dopamine circuits in an immature state - Nature Communications

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By Lauren Reynolds, Daiana Rigoni, Claire Nguyen, Tinaig Le Borgne, Clara Franco Verified, Fabio Marti, Nicolas Heck, Alexandre Mourot, Nicolas Renier, Jacques Barik
| Nature Verified
Abstract How nicotine acts on developing neurocircuitry in adolescence to promote later addiction vulnerability remains largely unknown, but may hold the key for informing more effective intervention efforts. We found transient nicotine exposure in early adolescent (PND 21-28) male mice was sufficient to produce a marked vulnerability to nicotine in adulthood (PND 60 + ), associated with disrupted functional connectivity in dopaminergic circuits.
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