PMID- 33636691 OWN - NLM STAT- MEDLINE DCOM- 20210514 LR - 20231213 IS - 1879-1379 (Electronic) IS - 0022-3956 (Linking) VI - 136 DP - 2021 Apr TI - Retinal dysfunctions in regular tobacco users: The retina as a window to the reward circuit in addictive disorders. PG - 351-357 LID - S0022-3956(21)00090-X [pii] LID - 10.1016/j.jpsychires.2021.02.023 [doi] AB - The nicotine contained in tobacco is a neuromodulator which affects neurotransmission within the brain. The retina is an easy way to study central synaptic transmission dysfunctions in neuropsychiatric disorders. The purpose of this study is to assess the impact of regular tobacco use on retinal function using pattern (PERG), flash (fERG) and multifocal (mfERG) electroretinogram (ERG). We recorded PERG, fERG and mfERG for 24 regular tobacco users and 30 healthy non-smoking subjects. The protocol was compliant with International Society for Clinical Electrophysiology of Vision standards. The amplitudes and peak times (PT) of P50, N95 waves (PERG), a-, b- and oscillatory potentials (fERG), and N1, P1, N2 (mfERG) were evaluated. Compared to non-smokers, the results (Mann-Whitney U test, Bonferroni correction) for tobacco users suggested a significant increase of ~ 1 ms in the PT of light-adapted 3.0 fERG b-wave (p = 0.002). Using mfERG, we observed the following increases in tobacco users: in ring 3 for P1 PT of ~1,5 ms and in ring 5 for P1 PT of ~ 1 ms and for N2 PT of ~ 1 ms (p = 0.002, p = 0.002 and p = 0.006). It is our hypothesis that these results reflect the consequences of regular tobacco use on retinal synaptic transmission, and more specifically on dopaminergic and cholinergic transmission. We deduce that the retina may provide a crucial site of investigation for neurotransmission modulation of the reward circuit in regular tobacco users. CI - Copyright (c) 2021 Elsevier Ltd. All rights reserved. FAU - Dartois, Mathilde AU - Dartois M AD - Pole Hospitalo-Universitaire de Psychiatrie d'Adultes et d'Addictologie du Grand Nancy, Centre Psychotherapique de Nancy, Laxou, France. Electronic address: mathildedartois33@gmail.com. FAU - Haudiquet, Nicolas AU - Haudiquet N AD - Pole Hospitalo-Universitaire de Psychiatrie d'Adultes et d'Addictologie du Grand Nancy, Centre Psychotherapique de Nancy, Laxou, France. Electronic address: haudiquet.n@live.fr. FAU - Albuisson, Eliane AU - Albuisson E AD - CHRU-Nancy, DRCI, Departement MPI, Unite de Methodologie, Data management et Statistique UMDS, F-54000, Nancy, France; Universite de Lorraine, Faculte de Medecine, InSciDenS, F-54000, Nancy, France; Universite de Lorraine, CNRS, IECL, F-54000, Nancy, France; Faculte de Medecine, Universite de Lorraine, Vandoeuvre-les-Nancy, France. Electronic address: eliane.albuisson@univ-lorraine.fr. FAU - Angioi-Duprez, Karine AU - Angioi-Duprez K AD - Service d'Ophtalmologie, CHRU Nancy, Nancy, France; Faculte de Medecine, Universite de Lorraine, Vandoeuvre-les-Nancy, France. Electronic address: karine.angioi@univ-lorraine.fr. FAU - Schwan, Raymund AU - Schwan R AD - Pole Hospitalo-Universitaire de Psychiatrie d'Adultes et d'Addictologie du Grand Nancy, Centre Psychotherapique de Nancy, Laxou, France; INSERM U1114, Federation de Medecine Translationnelle de Strasbourg, Departement de Psychiatrie, Centre Hospitalier Regional Universitaire de Strasbourg, Strasbourg, France; Faculte de Medecine, Universite de Lorraine, Vandoeuvre-les-Nancy, France. Electronic address: raymund.schwan@univ-lorraine.fr. FAU - Laprevote, Vincent AU - Laprevote V AD - Pole Hospitalo-Universitaire de Psychiatrie d'Adultes et d'Addictologie du Grand Nancy, Centre Psychotherapique de Nancy, Laxou, France; INSERM U1114, Federation de Medecine Translationnelle de Strasbourg, Departement de Psychiatrie, Centre Hospitalier Regional Universitaire de Strasbourg, Strasbourg, France; Faculte de Medecine, Universite de Lorraine, Vandoeuvre-les-Nancy, France. Electronic address: Vincent.laprevote@cpn-laxou.com. FAU - Schwitzer, Thomas AU - Schwitzer T AD - Pole Hospitalo-Universitaire de Psychiatrie d'Adultes et d'Addictologie du Grand Nancy, Centre Psychotherapique de Nancy, Laxou, France; INSERM U1114, Federation de Medecine Translationnelle de Strasbourg, Departement de Psychiatrie, Centre Hospitalier Regional Universitaire de Strasbourg, Strasbourg, France; Faculte de Medecine, Universite de Lorraine, Vandoeuvre-les-Nancy, France. Electronic address: thomas.schwitzer@univ-lorraine.fr. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210213 PL - England TA - J Psychiatr Res JT - Journal of psychiatric research JID - 0376331 SB - IM MH - Electroretinography MH - Humans MH - *Retina MH - Reward MH - Synaptic Transmission MH - *Nicotiana OTO - NOTNLM OT - Electroretinogram OT - Nicotine OT - Retina OT - Reward circuit OT - Synaptic transmission OT - Tobacco EDAT- 2021/02/27 06:00 MHDA- 2021/05/15 06:00 CRDT- 2021/02/26 20:19 PHST- 2020/11/12 00:00 [received] PHST- 2021/01/20 00:00 [revised] PHST- 2021/02/08 00:00 [accepted] PHST- 2021/02/27 06:00 [pubmed] PHST- 2021/05/15 06:00 [medline] PHST- 2021/02/26 20:19 [entrez] AID - S0022-3956(21)00090-X [pii] AID - 10.1016/j.jpsychires.2021.02.023 [doi] PST - ppublish SO - J Psychiatr Res. 2021 Apr;136:351-357. doi: 10.1016/j.jpsychires.2021.02.023. Epub 2021 Feb 13.