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Stress Controllability Modulates Basal Activity of Dopamine Neurons in the Substantia Nigra Compacta

Prolonged stress induces neural maladaptations in the mesolimbic dopamine (DA) system and produces emotional and behavioral disorders. However, the effects of stress on activity of DA neurons are diverse and complex that hinge on the type, duration, intensity, and controllability of stressors. Here,...

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Autores principales: Yao, Li, Li, Yongfeng, Diao, Zhijun, Di, Yuanyuan, Wu, Meilin, Wei, Chunling, Qian, Zhaoqiang, Liu, Zhiqiang, Han, Jing, Fan, Juan, Tian, Yingfang, Zheng, Qiaohua, Ren, Wei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Society for Neuroscience 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8211467/
https://www.ncbi.nlm.nih.gov/pubmed/34035070
http://dx.doi.org/10.1523/ENEURO.0044-21.2021
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author Yao, Li
Li, Yongfeng
Diao, Zhijun
Di, Yuanyuan
Wu, Meilin
Wei, Chunling
Qian, Zhaoqiang
Liu, Zhiqiang
Han, Jing
Fan, Juan
Tian, Yingfang
Zheng, Qiaohua
Ren, Wei
author_facet Yao, Li
Li, Yongfeng
Diao, Zhijun
Di, Yuanyuan
Wu, Meilin
Wei, Chunling
Qian, Zhaoqiang
Liu, Zhiqiang
Han, Jing
Fan, Juan
Tian, Yingfang
Zheng, Qiaohua
Ren, Wei
author_sort Yao, Li
collection PubMed
description Prolonged stress induces neural maladaptations in the mesolimbic dopamine (DA) system and produces emotional and behavioral disorders. However, the effects of stress on activity of DA neurons are diverse and complex that hinge on the type, duration, intensity, and controllability of stressors. Here, controlling the duration, intensity, and type of the stressors to be identical, we observed the effects of stressor controllability on the activity of substantia nigra pars compacta (SNc) DA neurons in mice. We found that both lack and loss of control (LOC) over shock enhance the basal activity and intrinsic excitability of SNc DA neurons via modulation of I(h) current, but not via corticosterone serum level. Moreover, LOC over shock produces more significant enhancement in the basal activity of SNc DA neurons than that produced by shock per se, and therefore attenuates the response to natural reward. This attenuation can be reversed by control over shock. These results indicate that although chronic stress per se tends to enhance the basal activity of SNc DA neurons, LOC over the stressor is able to induce a larger enhancement in the basal activity of SNc DA neurons and produce more severe behavioral deficits. However, control over stress ameliorates the deleterious effects of stress, highlighting the role of stress controllability.
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spelling pubmed-82114672021-06-21 Stress Controllability Modulates Basal Activity of Dopamine Neurons in the Substantia Nigra Compacta Yao, Li Li, Yongfeng Diao, Zhijun Di, Yuanyuan Wu, Meilin Wei, Chunling Qian, Zhaoqiang Liu, Zhiqiang Han, Jing Fan, Juan Tian, Yingfang Zheng, Qiaohua Ren, Wei eNeuro Research Article: New Research Prolonged stress induces neural maladaptations in the mesolimbic dopamine (DA) system and produces emotional and behavioral disorders. However, the effects of stress on activity of DA neurons are diverse and complex that hinge on the type, duration, intensity, and controllability of stressors. Here, controlling the duration, intensity, and type of the stressors to be identical, we observed the effects of stressor controllability on the activity of substantia nigra pars compacta (SNc) DA neurons in mice. We found that both lack and loss of control (LOC) over shock enhance the basal activity and intrinsic excitability of SNc DA neurons via modulation of I(h) current, but not via corticosterone serum level. Moreover, LOC over shock produces more significant enhancement in the basal activity of SNc DA neurons than that produced by shock per se, and therefore attenuates the response to natural reward. This attenuation can be reversed by control over shock. These results indicate that although chronic stress per se tends to enhance the basal activity of SNc DA neurons, LOC over the stressor is able to induce a larger enhancement in the basal activity of SNc DA neurons and produce more severe behavioral deficits. However, control over stress ameliorates the deleterious effects of stress, highlighting the role of stress controllability. Society for Neuroscience 2021-06-15 /pmc/articles/PMC8211467/ /pubmed/34035070 http://dx.doi.org/10.1523/ENEURO.0044-21.2021 Text en Copyright © 2021 Yao et al. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International license (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution and reproduction in any medium provided that the original work is properly attributed.
spellingShingle Research Article: New Research
Yao, Li
Li, Yongfeng
Diao, Zhijun
Di, Yuanyuan
Wu, Meilin
Wei, Chunling
Qian, Zhaoqiang
Liu, Zhiqiang
Han, Jing
Fan, Juan
Tian, Yingfang
Zheng, Qiaohua
Ren, Wei
Stress Controllability Modulates Basal Activity of Dopamine Neurons in the Substantia Nigra Compacta
title Stress Controllability Modulates Basal Activity of Dopamine Neurons in the Substantia Nigra Compacta
title_full Stress Controllability Modulates Basal Activity of Dopamine Neurons in the Substantia Nigra Compacta
title_fullStr Stress Controllability Modulates Basal Activity of Dopamine Neurons in the Substantia Nigra Compacta
title_full_unstemmed Stress Controllability Modulates Basal Activity of Dopamine Neurons in the Substantia Nigra Compacta
title_short Stress Controllability Modulates Basal Activity of Dopamine Neurons in the Substantia Nigra Compacta
title_sort stress controllability modulates basal activity of dopamine neurons in the substantia nigra compacta
topic Research Article: New Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8211467/
https://www.ncbi.nlm.nih.gov/pubmed/34035070
http://dx.doi.org/10.1523/ENEURO.0044-21.2021
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