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Extra-striatal D(2/3) receptor availability in youth at risk for addiction
The neurobiological traits that confer risk for addictions remain poorly understood. However, dopaminergic function throughout the prefrontal cortex, limbic system, and upper brainstem has been implicated in behavioral features that influence addiction vulnerability, including poor impulse control,...
Autores principales: | , , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer International Publishing
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7360619/ https://www.ncbi.nlm.nih.gov/pubmed/32259831 http://dx.doi.org/10.1038/s41386-020-0662-7 |
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author | Jaworska, Natalia Cox, Sylvia M. L. Tippler, Maria Castellanos-Ryan, Natalie Benkelfat, Chawki Parent, Sophie Dagher, Alain Vitaro, Frank Boivin, Michel Pihl, Robert O. Côté, Sylvana M. Tremblay, Richard E. Séguin, Jean R. Leyton, Marco |
author_facet | Jaworska, Natalia Cox, Sylvia M. L. Tippler, Maria Castellanos-Ryan, Natalie Benkelfat, Chawki Parent, Sophie Dagher, Alain Vitaro, Frank Boivin, Michel Pihl, Robert O. Côté, Sylvana M. Tremblay, Richard E. Séguin, Jean R. Leyton, Marco |
author_sort | Jaworska, Natalia |
collection | PubMed |
description | The neurobiological traits that confer risk for addictions remain poorly understood. However, dopaminergic function throughout the prefrontal cortex, limbic system, and upper brainstem has been implicated in behavioral features that influence addiction vulnerability, including poor impulse control, and altered sensitivity to rewards and punishments (i.e., externalizing features). To test these associations in humans, we measured type-2/3 dopamine receptor (DA(2/3)R) availability in youth at high vs. low risk for substance use disorders (SUDs). In this study, N = 58 youth (18.5 ± 0.6 years) were recruited from cohorts that have been followed since birth. Participants with either high (high EXT; N = 27; 16 F/11 M) or low pre-existing externalizing traits (low EXT; N = 31; 20 F/11 M) underwent a 90-min positron emission tomography [(18)F]fallypride scan, and completed the Barratt Impulsiveness Scale (BIS-11), Substance Use Risk Profile scale (SURPS), and Sensitivity to Punishment (SP) and Sensitivity to Reward (SR) questionnaire. We found that high vs. low EXT trait participants reported elevated substance use, BIS-11, SR, and SURPS impulsivity scores, had a greater prevalence of psychiatric disorders, and exhibited higher [(18)F]fallypride binding potential (BP(ND)) values in prefrontal, limbic and paralimbic regions, even when controlling for substance use. Group differences were not evident in midbrain dopamine cell body regions, but, across all participants, low midbrain BP(ND) values were associated with low SP scores. Together, the results suggest that altered DA(2/3)R availability in terminal extra-striatal and dopamine cell body regions might constitute biological vulnerability traits, generating an EXT trajectory for addictions with and without co-occurring alterations in punishment sensitivity (i.e., an internalizing feature). |
format | Online Article Text |
id | pubmed-7360619 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Springer International Publishing |
record_format | MEDLINE/PubMed |
spelling | pubmed-73606192020-07-20 Extra-striatal D(2/3) receptor availability in youth at risk for addiction Jaworska, Natalia Cox, Sylvia M. L. Tippler, Maria Castellanos-Ryan, Natalie Benkelfat, Chawki Parent, Sophie Dagher, Alain Vitaro, Frank Boivin, Michel Pihl, Robert O. Côté, Sylvana M. Tremblay, Richard E. Séguin, Jean R. Leyton, Marco Neuropsychopharmacology Article The neurobiological traits that confer risk for addictions remain poorly understood. However, dopaminergic function throughout the prefrontal cortex, limbic system, and upper brainstem has been implicated in behavioral features that influence addiction vulnerability, including poor impulse control, and altered sensitivity to rewards and punishments (i.e., externalizing features). To test these associations in humans, we measured type-2/3 dopamine receptor (DA(2/3)R) availability in youth at high vs. low risk for substance use disorders (SUDs). In this study, N = 58 youth (18.5 ± 0.6 years) were recruited from cohorts that have been followed since birth. Participants with either high (high EXT; N = 27; 16 F/11 M) or low pre-existing externalizing traits (low EXT; N = 31; 20 F/11 M) underwent a 90-min positron emission tomography [(18)F]fallypride scan, and completed the Barratt Impulsiveness Scale (BIS-11), Substance Use Risk Profile scale (SURPS), and Sensitivity to Punishment (SP) and Sensitivity to Reward (SR) questionnaire. We found that high vs. low EXT trait participants reported elevated substance use, BIS-11, SR, and SURPS impulsivity scores, had a greater prevalence of psychiatric disorders, and exhibited higher [(18)F]fallypride binding potential (BP(ND)) values in prefrontal, limbic and paralimbic regions, even when controlling for substance use. Group differences were not evident in midbrain dopamine cell body regions, but, across all participants, low midbrain BP(ND) values were associated with low SP scores. Together, the results suggest that altered DA(2/3)R availability in terminal extra-striatal and dopamine cell body regions might constitute biological vulnerability traits, generating an EXT trajectory for addictions with and without co-occurring alterations in punishment sensitivity (i.e., an internalizing feature). Springer International Publishing 2020-04-07 2020-08 /pmc/articles/PMC7360619/ /pubmed/32259831 http://dx.doi.org/10.1038/s41386-020-0662-7 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Jaworska, Natalia Cox, Sylvia M. L. Tippler, Maria Castellanos-Ryan, Natalie Benkelfat, Chawki Parent, Sophie Dagher, Alain Vitaro, Frank Boivin, Michel Pihl, Robert O. Côté, Sylvana M. Tremblay, Richard E. Séguin, Jean R. Leyton, Marco Extra-striatal D(2/3) receptor availability in youth at risk for addiction |
title | Extra-striatal D(2/3) receptor availability in youth at risk for addiction |
title_full | Extra-striatal D(2/3) receptor availability in youth at risk for addiction |
title_fullStr | Extra-striatal D(2/3) receptor availability in youth at risk for addiction |
title_full_unstemmed | Extra-striatal D(2/3) receptor availability in youth at risk for addiction |
title_short | Extra-striatal D(2/3) receptor availability in youth at risk for addiction |
title_sort | extra-striatal d(2/3) receptor availability in youth at risk for addiction |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7360619/ https://www.ncbi.nlm.nih.gov/pubmed/32259831 http://dx.doi.org/10.1038/s41386-020-0662-7 |
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