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Wang W, Wang D, Zhao D, Xu L, Jiang S, Zhang Y, Cui M, Liu J, Meng F, Liu C, Liu D, Li W, Li C. Dorsal raphe dopaminergic neurons target CaMKII + neurons in dorsal bed nucleus of the stria terminalis for mediating depression-related behaviors. Transl Psychiatry 2024; 14:408. [PMID: 39358336 PMCID: PMC11447211 DOI: 10.1038/s41398-024-03093-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 08/27/2024] [Accepted: 09/03/2024] [Indexed: 10/04/2024] Open
Abstract
Dopamine (DA) neurons play a crucial role in the development and manifestation of depression, as well as in response to antidepressant treatments. While the function of the predominantly distributed DA neurons in the ventral tegmental area (VTA) is well established, the contribution of a small fraction of DA neurons in the dorsal raphe nucleus (DRN) during depression remains unclear. In this study, we found that chronic unpredictable stress (CUS) induces depression-related behaviors and decreases spontaneous firing rates, excitatory and inhibitory postsynaptic currents of DA neurons in the DRN associated with reduced excitatory synaptic transmission in male and female mice. The chemogenetic inhibition of DA neurons in the DRN produces depressive phenotypes. Conversely, their activation completely reversed the anhedonic and despair behaviors induced by CUS. Furthermore, we showed that a DRN dopaminergic projecting to the dorsal bed nucleus of the stria terminalis (dBNST) selectively controls depressive behaviors by influencing the neural activity and N-methyl-D-aspartate receptor (NMDAR) mediating EPSC of calcium/calmodulin-dependent protein kinase II+ (CaMKII+) target neurons by regulating dopamine neurotransmitter and dopamine receptor 2 (DR2) in the dBNST. Overall, these findings highlight the essential role of the DRNDA → dBNSTCaMKII+ neural circuit in bi-directionally mediating stress-induced depression-related behaviors. Our findings indicate that DRN DA neurons are a key component of the neural circuitry involved in regulating depression-related behaviors, making them a potential therapeutic target for depression.
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Affiliation(s)
- Wentao Wang
- Department of Rehabilitation Medicine, Binzhou Medical University Hospital, Binzhou, Shandong, China
- Medical Research Center, Binzhou Medical University Hospital, Binzhou, Shandong, China
- Institute for Metabolic & Neuropsychiatric Disorders, Binzhou Medical University Hospital, Binzhou, Shandong, China
- Department of Psychology, Binzhou Medical University Hospital, Binzhou, Shandong, China
| | - Dan Wang
- Department of Rehabilitation Medicine, Binzhou Medical University Hospital, Binzhou, Shandong, China
- Medical Research Center, Binzhou Medical University Hospital, Binzhou, Shandong, China
- Institute for Metabolic & Neuropsychiatric Disorders, Binzhou Medical University Hospital, Binzhou, Shandong, China
- Department of Psychology, Binzhou Medical University Hospital, Binzhou, Shandong, China
| | - Di Zhao
- Department of Rehabilitation Medicine, Binzhou Medical University Hospital, Binzhou, Shandong, China
- Medical Research Center, Binzhou Medical University Hospital, Binzhou, Shandong, China
- Institute for Metabolic & Neuropsychiatric Disorders, Binzhou Medical University Hospital, Binzhou, Shandong, China
- Department of Psychology, Binzhou Medical University Hospital, Binzhou, Shandong, China
| | - Lihong Xu
- Department of Rehabilitation Medicine, Binzhou Medical University Hospital, Binzhou, Shandong, China
- Medical Research Center, Binzhou Medical University Hospital, Binzhou, Shandong, China
- Department of Psychology, Binzhou Medical University Hospital, Binzhou, Shandong, China
| | - Shujun Jiang
- Department of Physiology, Binzhou Medical University, Yantai, Shandong, China
| | - Yu Zhang
- Medical Research Center, Binzhou Medical University Hospital, Binzhou, Shandong, China
- Institute for Metabolic & Neuropsychiatric Disorders, Binzhou Medical University Hospital, Binzhou, Shandong, China
- Department of Nursing, Binzhou Medical University, Yantai, Shandong, China
| | - Minghu Cui
- Department of Rehabilitation Medicine, Binzhou Medical University Hospital, Binzhou, Shandong, China
- Medical Research Center, Binzhou Medical University Hospital, Binzhou, Shandong, China
- Department of Psychology, Binzhou Medical University Hospital, Binzhou, Shandong, China
| | - Jing Liu
- Department of Rehabilitation Medicine, Binzhou Medical University Hospital, Binzhou, Shandong, China
- Medical Research Center, Binzhou Medical University Hospital, Binzhou, Shandong, China
- Institute for Metabolic & Neuropsychiatric Disorders, Binzhou Medical University Hospital, Binzhou, Shandong, China
- Department of Psychology, Binzhou Medical University Hospital, Binzhou, Shandong, China
| | - Fantao Meng
- Department of Rehabilitation Medicine, Binzhou Medical University Hospital, Binzhou, Shandong, China
- Medical Research Center, Binzhou Medical University Hospital, Binzhou, Shandong, China
- Institute for Metabolic & Neuropsychiatric Disorders, Binzhou Medical University Hospital, Binzhou, Shandong, China
- Department of Psychology, Binzhou Medical University Hospital, Binzhou, Shandong, China
| | - Cuilan Liu
- Department of Rehabilitation Medicine, Binzhou Medical University Hospital, Binzhou, Shandong, China
- Medical Research Center, Binzhou Medical University Hospital, Binzhou, Shandong, China
- Institute for Metabolic & Neuropsychiatric Disorders, Binzhou Medical University Hospital, Binzhou, Shandong, China
- Department of Psychology, Binzhou Medical University Hospital, Binzhou, Shandong, China
| | - Dunjiang Liu
- Department of Rehabilitation Medicine, Binzhou Medical University Hospital, Binzhou, Shandong, China
- Medical Research Center, Binzhou Medical University Hospital, Binzhou, Shandong, China
- Institute for Metabolic & Neuropsychiatric Disorders, Binzhou Medical University Hospital, Binzhou, Shandong, China
- Department of Psychology, Binzhou Medical University Hospital, Binzhou, Shandong, China
| | - Wei Li
- Department of Rehabilitation Medicine, Binzhou Medical University Hospital, Binzhou, Shandong, China.
- Medical Research Center, Binzhou Medical University Hospital, Binzhou, Shandong, China.
- Institute for Metabolic & Neuropsychiatric Disorders, Binzhou Medical University Hospital, Binzhou, Shandong, China.
- Department of Psychology, Binzhou Medical University Hospital, Binzhou, Shandong, China.
| | - Chen Li
- Department of Rehabilitation Medicine, Binzhou Medical University Hospital, Binzhou, Shandong, China.
- Medical Research Center, Binzhou Medical University Hospital, Binzhou, Shandong, China.
- Institute for Metabolic & Neuropsychiatric Disorders, Binzhou Medical University Hospital, Binzhou, Shandong, China.
- Department of Psychology, Binzhou Medical University Hospital, Binzhou, Shandong, China.
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Zhang L, Meng S, Huang E, Di T, Ding Z, Huang S, Chen W, Zhang J, Zhao S, Yuwen T, Chen Y, Xue Y, Wang F, Shi J, Shi Y. High frequency deep brain stimulation of the dorsal raphe nucleus prevents methamphetamine priming-induced reinstatement of drug seeking in rats. Transl Psychiatry 2024; 14:190. [PMID: 38622130 PMCID: PMC11018621 DOI: 10.1038/s41398-024-02895-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 03/23/2024] [Accepted: 03/28/2024] [Indexed: 04/17/2024] Open
Abstract
Drug addiction represents a multifaceted and recurrent brain disorder that possesses the capability to create persistent and ineradicable pathological memory. Deep brain stimulation (DBS) has shown a therapeutic potential for neuropsychological disorders, while the precise stimulation targets and therapeutic parameters for addiction remain deficient. Among the crucial brain regions implicated in drug addiction, the dorsal raphe nucleus (DRN) has been found to exert an essential role in the manifestation of addiction memory. Thus, we investigated the effects of DRN DBS in the treatment of addiction and whether it might produce side effects by a series of behavioral assessments, including methamphetamine priming-induced reinstatement of drug seeking behaviors, food-induced conditioned place preference (CPP), open field test and elevated plus-maze test, and examined brain activity and connectivity after DBS of DRN. We found that high-frequency DBS of the DRN significantly lowered the CPP scores and the number of active-nosepokes in the methamphetamine-primed CPP test and the self-administration model. Moreover, both high-frequency and sham DBS group rats were able to establish significant food-induced place preference, and no significant difference was observed in the open field test and in the elevated plus-maze test between the two groups. Immunofluorescence staining and functional magnetic resonance imaging revealed that high-frequency DBS of the DRN could alter the activity and functional connectivity of brain regions related to addiction. These results indicate that high-frequency DBS of the DRN effectively inhibits methamphetamine priming-induced relapse and seeking behaviors in rats and provides a new target for the treatment of drug addiction.
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Affiliation(s)
- Libo Zhang
- Shenzhen Key Laboratory for Drug Addiction and Medication Safety, Shenzhen Public Service Platform for Clinical Application of Medical Imaging, Department of Ultrasound, Peking University Shenzhen Hospital, Shenzhen-PKU-HKUST Medical Center, Shenzhen, China
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence Research, Peking University, Beijing, China
| | - Shiqiu Meng
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence Research, Peking University, Beijing, China
| | - Enze Huang
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence Research, Peking University, Beijing, China
| | - Tianqi Di
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence Research, Peking University, Beijing, China
| | - Zengbo Ding
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence Research, Peking University, Beijing, China
| | - Shihao Huang
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence Research, Peking University, Beijing, China
| | - Wenjun Chen
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence Research, Peking University, Beijing, China
| | - Jiayi Zhang
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence Research, Peking University, Beijing, China
| | - Shenghong Zhao
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence Research, Peking University, Beijing, China
| | - Ting Yuwen
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence Research, Peking University, Beijing, China
| | - Yang Chen
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence Research, Peking University, Beijing, China
| | - Yanxue Xue
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence Research, Peking University, Beijing, China
| | - Feng Wang
- Shenzhen Key Laboratory for Drug Addiction and Medication Safety, Shenzhen Public Service Platform for Clinical Application of Medical Imaging, Department of Ultrasound, Peking University Shenzhen Hospital, Shenzhen-PKU-HKUST Medical Center, Shenzhen, China
| | - Jie Shi
- Shenzhen Key Laboratory for Drug Addiction and Medication Safety, Shenzhen Public Service Platform for Clinical Application of Medical Imaging, Department of Ultrasound, Peking University Shenzhen Hospital, Shenzhen-PKU-HKUST Medical Center, Shenzhen, China.
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence Research, Peking University, Beijing, China.
- Henan Collaborative Innovation Center of Prevention and Treatment of Mental Disorder, the Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, China.
| | - Yu Shi
- Shenzhen Key Laboratory for Drug Addiction and Medication Safety, Shenzhen Public Service Platform for Clinical Application of Medical Imaging, Department of Ultrasound, Peking University Shenzhen Hospital, Shenzhen-PKU-HKUST Medical Center, Shenzhen, China.
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Song BL, Zhou J, Jiang Y, Li LF, Liu YJ. Dopamine D2 receptor within the intermediate region of the lateral septum modulate social hierarchy in male mice. Neuropharmacology 2023; 241:109735. [PMID: 37788799 DOI: 10.1016/j.neuropharm.2023.109735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 09/20/2023] [Accepted: 09/25/2023] [Indexed: 10/05/2023]
Abstract
The dopamine (DA) system has long been involved in social hierarchies; however, the specific mechanisms have not been elucidated. The lateral septum (LS) is a limbic brain structure that regulates various emotional, motivational, and social behaviors. DA receptors are abundantly expressed in the LS, modulating its functions. In this study, we evaluated the functions of DA receptors within different subregions of the LS in social dominance using a confrontation tube test in male mice. The results showed that mice living in social groups formed linear dominance hierarchies after a few days of cohousing, and the subordinates showed increased anxiety. Fos expressions was elevated in the entire LS after a confrontation tube test in the subordinates. However, DA neurons were more activated in the dominates within the ventral tegmental area and the dorsal raphe nucleus. Quantitative real-time polymerase chain reaction results showed that D2 receptor (D2R) within the intermediate region of the LS (LSi) were elevated in the subordinate. In the following pharmacological studies, we found simultaneous D2R activation in the dominants and D2R inhibition in the subordinates switched the original dominant-subordinate relationship. The aforementioned results suggested that D2R within the LSi plays an important role in social dominance in male mice. These findings improve our understanding of the neural mechanisms underlying the social hierarchy, which is closely related to our social life and happiness.
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Affiliation(s)
- Bai-Lin Song
- Research Center of Henan Provincial Agricultural Biomass Resource Engineering and Technology, College of Life Science and Agriculture, Nanyang Normal University, Nanyang, 473061, China
| | - Jie Zhou
- Research Center of Henan Provincial Agricultural Biomass Resource Engineering and Technology, College of Life Science and Agriculture, Nanyang Normal University, Nanyang, 473061, China
| | - Yi Jiang
- Research Center of Henan Provincial Agricultural Biomass Resource Engineering and Technology, College of Life Science and Agriculture, Nanyang Normal University, Nanyang, 473061, China
| | - Lai-Fu Li
- Research Center of Henan Provincial Agricultural Biomass Resource Engineering and Technology, College of Life Science and Agriculture, Nanyang Normal University, Nanyang, 473061, China.
| | - Ying-Juan Liu
- Research Center of Henan Provincial Agricultural Biomass Resource Engineering and Technology, College of Life Science and Agriculture, Nanyang Normal University, Nanyang, 473061, China.
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Merola GP, Boy OB, Fascina I, Pecoraro V, Falone A, Patti A, Santarelli G, Cicero DC, Ballerini A, Ricca V. Aberrant Salience Inventory: A meta-analysis to investigate its psychometric properties and identify screening cutoff scores. Scand J Psychol 2023; 64:734-745. [PMID: 37243361 DOI: 10.1111/sjop.12931] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 05/04/2023] [Accepted: 05/05/2023] [Indexed: 05/28/2023]
Abstract
INTRODUCTION The Aberrant Salience Inventory (ASI) is a useful tool to measure salience abnormalities among the general population. There is strong clinical and scientific evidence that salience alteration is linked to psychosis. To the present day, no meta-analysis evaluating ASI's psychometric properties and screening potential has been published. MATERIALS AND METHODS PubMed, Google Scholar, Scopus, and Embase were searched using terms including "psychosis," "schizophrenia," and "Aberrant Salience Inventory." Observational and experimental studies employing ASI on populations of non-psychotic controls and patients with psychosis were included. ASI scores and other demographic measures (age, gender, ethnicity) were extracted as outcomes. Individual patients' data (IPD) were collected. Exploratory factor analysis (EFA) was performed on the IPD. RESULTS Eight articles were finally included in the meta-analysis. ASI scores differ significantly between psychotic and non-psychotic populations; a novel three-factor model is proposed regarding subscales structure. Theoretical positive predictive values (PPVs) and negative predictive values (NPVs) were calculated and presented together with different cutoff points depending on preselected specific populations of interest. DISCUSSION PPV and NPV values reached levels adequate for ASI to be considered a viable screening tool for psychosis. The factor analysis highlights the presence of a novel subscale that was named "Unveiling experiences." Implications regarding the meaning of the new factor structure are discussed, as well as ASI's potential as a screening tool.
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Affiliation(s)
| | - Ottone Baccaredda Boy
- Psychiatry Unit, Department of Health Sciences, University of Florence, Florence, Italy
| | - Isotta Fascina
- Psychiatry Unit, Department of Health Sciences, University of Florence, Florence, Italy
| | - Vincenzo Pecoraro
- Psychiatry Unit, Department of Health Sciences, University of Florence, Florence, Italy
| | - Andrea Falone
- Psychiatry Unit, Department of Health Sciences, University of Florence, Florence, Italy
| | - Andrea Patti
- Psychiatry Unit, Department of Health Sciences, University of Florence, Florence, Italy
| | - Gabriele Santarelli
- Psychiatry Unit, Department of Health Sciences, University of Florence, Florence, Italy
| | | | - Andrea Ballerini
- Psychiatry Unit, Department of Health Sciences, University of Florence, Florence, Italy
| | - Valdo Ricca
- Psychiatry Unit, Department of Health Sciences, University of Florence, Florence, Italy
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Roberta C, Vera S, Hans A H, Michael H H. Activation patterns of dopaminergic cell populations reflect different learning scenarios in a cichlid fish, Pseudotropheus zebra. J Chem Neuroanat 2023; 133:102342. [PMID: 37722435 DOI: 10.1016/j.jchemneu.2023.102342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 09/13/2023] [Accepted: 09/14/2023] [Indexed: 09/20/2023]
Abstract
Dopamine is present in all vertebrates and the functional roles of the subsystems are assumed to be similar. Whereas the effect of dopaminergic modulation is well investigated in different target systems, less is known about the factors that are causing the modulation of dopaminergic cells. Using the zebra mbuna, Pseudotropheus zebra, a cichlid fish from Lake Malawi as a model system, we investigated the activation of specific dopaminergic cell populations detected by double-labeling with TH and pS6 antibodies while the animals were solving different learning tasks. Specifically, we compared an intense avoidance learning situation, an instrumental learning task, and a non-learning isolated group and found strong activation of different dopaminergic cell populations. Preoptic-hypothalamic cell populations respond to the stress component in the avoidance task, and the forced movement/locomotion may be responsible for activation in the posterior tubercle. The instrumental learning task had little stress component, but the activation of the raphe superior in this group may be correlated with attention or arousal during the training sessions. At the same time, the weaker activation of the nucleus of the posterior commissure may be related to positive reward acting onto tectal circuits. Finally, we examined the co-activation patterns across all dopaminergic cell populations and recovered robust differences across experimental groups, largely driven by hypothalamic, posterior tubercle, and brain stem regions possibly encoding the valence and salience associated with stressful stimuli. Taken together, our results offer some insights into the different functions of the dopaminergic cell populations in the brain of a non-mammalian vertebrate in correlation with different behavioral conditions, extending our knowledge for a more comprehensive view of the mechanisms of dopaminergic modulation in vertebrates.
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Affiliation(s)
- Calvo Roberta
- Institute of Zoology, Rheinische Friedrich-Wilhelms-Universität Bonn, Poppelsdorfer Schloss, Meckenheimer Allee 169, 53115 Bonn, Germany.
| | - Schluessel Vera
- Institute of Zoology, Rheinische Friedrich-Wilhelms-Universität Bonn, Poppelsdorfer Schloss, Meckenheimer Allee 169, 53115 Bonn, Germany
| | - Hofmann Hans A
- Department of Integrative Biology, Institute for Neuroscience, University of Texas at Austin, 2415 Speedway, Austin, TX 78712, USA
| | - Hofmann Michael H
- Institute of Zoology, Rheinische Friedrich-Wilhelms-Universität Bonn, Poppelsdorfer Schloss, Meckenheimer Allee 169, 53115 Bonn, Germany
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Rezayof A, Ghasemzadeh Z, Sahafi OH. Addictive drugs modify neurogenesis, synaptogenesis and synaptic plasticity to impair memory formation through neurotransmitter imbalances and signaling dysfunction. Neurochem Int 2023; 169:105572. [PMID: 37423274 DOI: 10.1016/j.neuint.2023.105572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 07/01/2023] [Accepted: 07/05/2023] [Indexed: 07/11/2023]
Abstract
Drug abuse changes neurophysiological functions at multiple cellular and molecular levels in the addicted brain. Well-supported scientific evidence suggests that drugs negatively affect memory formation, decision-making and inhibition, and emotional and cognitive behaviors. The mesocorticolimbic brain regions are involved in reward-related learning and habitual drug-seeking/taking behaviors to develop physiological and psychological dependence on the drugs. This review highlights the importance of specific drug-induced chemical imbalances resulting in memory impairment through various neurotransmitter receptor-mediated signaling pathways. The mesocorticolimbic modifications in the expression levels of brain-derived neurotrophic factor (BDNF) and the cAMP-response element binding protein (CREB) impair reward-related memory formation following drug abuse. The contributions of protein kinases and microRNAs (miRNAs), along with the transcriptional and epigenetic regulation have also been considered in memory impairment underlying drug addiction. Overall, we integrate the research on various types of drug-induced memory impairment in distinguished brain regions and provide a comprehensive review with clinical implications addressing the upcoming studies.
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Affiliation(s)
- Ameneh Rezayof
- Department of Animal Biology, School of Biology, College of Science, University of Tehran, Tehran, Iran.
| | - Zahra Ghasemzadeh
- Department of Animal Biology, School of Biology, College of Science, University of Tehran, Tehran, Iran
| | - Oveis Hosseinzadeh Sahafi
- Department of Neurophysiology, Graduate School of Medicine, The University of Tokyo, Tokyo, 113-0033, Japan
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Ravariu C. From Enzymatic Dopamine Biosensors to OECT Biosensors of Dopamine. BIOSENSORS 2023; 13:806. [PMID: 37622892 PMCID: PMC10452593 DOI: 10.3390/bios13080806] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Revised: 08/04/2023] [Accepted: 08/09/2023] [Indexed: 08/26/2023]
Abstract
Neurotransmitters are an important category of substances used inside the nervous system, whose detection with biosensors has been seriously addressed in the last decades. Dopamine, a neurotransmitter from the catecholamine family, was recently discovered to have implications for cardiac arrest or muscle contractions. In addition to having many other neuro-psychiatric implications, dopamine can be detected in blood, urine, and sweat. This review highlights the importance of biosensors as influential tools for dopamine recognition. The first part of this article is related to an introduction to biosensors for neurotransmitters, with a focus on dopamine. The regular methods in their detection are expensive and require high expertise personnel. A major direction of evolution of these biosensors has expanded with the integration of active biological materials suitable for molecular recognition near electronic devices. Secondly, for dopamine in particular, the miniaturized biosensors offer excellent sensitivity and specificity and offer cheaper detection than conventional spectrometry, while their linear detection ranges from the last years fall exactly on the clinical intervals. Thirdly, the applications of novel nanomaterials and biomaterials to these biosensors are discussed. Older generations, metabolism-based or enzymatic biosensors, could not detect concentrations below the micro-molar range. But new generations of biosensors combine aptamer receptors and organic electrochemical transistors, OECTs, as transducers. They have pushed the detection limit to the pico-molar and even femto-molar ranges, which fully correspond to the usual ranges of clinical detection of human dopamine in body humors that cover 0.1 ÷ 10 nM. In addition, if ten years ago the use of natural dopamine receptors on cell membranes seemed impossible for biosensors, the actual technology allows co-integrate transistors and vesicles with natural receptors of dopamine, like G protein-coupled receptors. The technology is still complicated, but the uni-molecular detection selectivity is promising.
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Affiliation(s)
- Cristian Ravariu
- Biodevices and Nano-Electronics of Cell Group, Department of Electronic Devices Circuits and Architectures, Polytechnic University of Bucharest, Splaiul Independentei 313, 060042 Bucharest, Romania
- EduSciArt SRL, Iovita 2, 050686 Bucharest, Romania
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Si Z, Wang X, Yu Z, Ruan Y, Qian L, Lin S, Gong X, Li L, Huang J, Liu Y. EGCG attenuates METH self-administration and reinstatement of METH seeking in mice. Addict Biol 2023; 28:e13307. [PMID: 37500489 DOI: 10.1111/adb.13307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 03/31/2023] [Accepted: 06/07/2023] [Indexed: 07/29/2023]
Abstract
Methamphetamine (METH) use disorder is a chronic, relapsing disorder and involves frequent failures of self-control of drug seeking and taking. Epigallocatechin-3-gallate (EGCG) is the most abundant polyphenolic compounds of green tea, which has shown great therapeutic effectiveness in neurological disorders. However, it is still unknown whether and how EGCG affects METH seeking behaviour. Here, we show nanostructured EGCG/ascorbic acid nanoparticles (EGCG/AA NPs) dose-dependently reduced METH self-administration (SA) under fixed-ratio 1 (FR1) and progressive ratio (PR) reinforcement schedules in mice and shifted METH dose-response curves downward. Furthermore, EGCG/AA NPs decreased drug- and cue-induced METH seeking. In addition, we found that METH SA led to a decrease in inhibitory postsynaptic currents (IPSCs) and increase in the AMPAR/NMDAR ratio and excitation/inhibition (E/I) ratio in ex vivo midbrain slices from ventral tegmental area (VTA) dopamine neurons. EGCG/AA NPs enhanced Gamma-aminobutyric acid (GABA)ergic inhibition and normalized the E/I ratio. EGCG restored the balance between excitation and inhibition in VTA dopamine neurons, which may contribute to the attenuation of METH SA. These findings indicate that EGCG is a promising pharmacotherapy for METH use disorder.
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Affiliation(s)
- Zizhen Si
- Department of Pharmacy, Affiliated Hospital of Ningbo University Medical School, Ningbo, People's Republic of China
- Health Science Center, Ningbo University, Ningbo, People's Republic of China
| | - Xidi Wang
- Health Science Center, Ningbo University, Ningbo, People's Republic of China
| | - Zhaoying Yu
- Department of Psychology, Collage of Teacher Education, Ningbo University, Ningbo, China
| | - Yuer Ruan
- Department of Psychology, Collage of Teacher Education, Ningbo University, Ningbo, China
| | - Liyin Qian
- Health Science Center, Ningbo University, Ningbo, People's Republic of China
| | - Shujun Lin
- Department of Psychology, Collage of Teacher Education, Ningbo University, Ningbo, China
| | - Xinshuang Gong
- Health Science Center, Ningbo University, Ningbo, People's Republic of China
| | | | - Jing Huang
- Department of Pharmacy, Affiliated Hospital of Ningbo University Medical School, Ningbo, People's Republic of China
| | - Yu Liu
- Health Science Center, Ningbo University, Ningbo, People's Republic of China
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Ru Q, Wang Y, Zhou E, Chen L, Wu Y. The potential therapeutic roles of Rho GTPases in substance dependence. Front Mol Neurosci 2023; 16:1125277. [PMID: 37063367 PMCID: PMC10097952 DOI: 10.3389/fnmol.2023.1125277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 03/14/2023] [Indexed: 04/03/2023] Open
Abstract
Rho GTPases family are considered to be molecular switches that regulate various cellular processes, including cytoskeleton remodeling, cell polarity, synaptic development and maintenance. Accumulating evidence shows that Rho GTPases are involved in neuronal development and brain diseases, including substance dependence. However, the functions of Rho GTPases in substance dependence are divergent and cerebral nuclei-dependent. Thereby, comprehensive integration of their roles and correlated mechanisms are urgently needed. In this review, the molecular functions and regulatory mechanisms of Rho GTPases and their regulators such as GTPase-activating proteins (GAPs) and guanine nucleotide exchange factors (GEFs) in substance dependence have been reviewed, and this is of great significance for understanding their spatiotemporal roles in addictions induced by different addictive substances and in different stages of substance dependence.
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Affiliation(s)
| | | | | | - Lin Chen
- *Correspondence: Lin Chen, ; Yuxiang Wu,
| | - Yuxiang Wu
- *Correspondence: Lin Chen, ; Yuxiang Wu,
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Abstract
The midbrain dopamine (mDA) system is composed of molecularly and functionally distinct neuron subtypes that mediate specific behaviours and are linked to various brain diseases. Considerable progress has been made in identifying mDA neuron subtypes, and recent work has begun to unveil how these neuronal subtypes develop and organize into functional brain structures. This progress is important for further understanding the disparate physiological functions of mDA neurons and their selective vulnerability in disease, and will ultimately accelerate therapy development. This Review discusses recent advances in our understanding of molecularly defined mDA neuron subtypes and their circuits, ranging from early developmental events, such as neuron migration and axon guidance, to their wiring and function, and future implications for therapeutic strategies.
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Fujita T, Aoki N, Mori C, Serizawa S, Kihara-Negishi F, Homma KJ, Yamaguchi S. Dopaminergic nuclei in the chick midbrain express serotonin receptor subfamily genes. Front Physiol 2022; 13:1030621. [PMID: 36425295 PMCID: PMC9679639 DOI: 10.3389/fphys.2022.1030621] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 10/28/2022] [Indexed: 08/05/2023] Open
Abstract
Serotonin (5-hydroxytryptamine, 5-HT) is a phylogenetically conserved modulator of numerous aspects of neural functions. Serotonergic neurons in the dorsal and median raphe nucleus provide ascending innervation to the entire forebrain and midbrain. Another important neural modulatory system exists in the midbrain, the dopaminergic system, which is associated to reward processing and motivation control. Dopaminergic neurons are distributed and clustered in the brain, classically designated as groups A8-A16. Among them, groups A8-A10 associated with reward processing and motivation control are located in the midbrain and projected to the forebrain. Recently, midbrain dopaminergic neurons were shown to be innervated by serotonergic neurons and modulated by 5-HT, with the crosstalk between serotonergic and dopaminergic systems attracting increased attention. In birds, previous studies revealed that midbrain dopaminergic neurons are located in the A8-A10 homologous clusters. However, the detailed distribution of dopaminergic neurons and the crosstalk between serotonergic and dopaminergic systems in the bird are poorly understood. To improve the understanding of the regulation of the dopaminergic by the serotonergic system, we performed in situ hybridization in the chick brainstem. We prepared RNA probes for chick orthologues of dopaminergic neuron-related genes; tyrosine hydroxylase (TH) and dopa decarboxylase (DDC), noradrenaline related genes; noradrenaline transporter (NAT) and dopamine beta-hydroxylase (DBH), and serotonin receptor genes; 5-HTR1A, 5-HTR1B, 5-HTR1D, 5-HTR1E, 5-HTR1F, 5-HTR2A, 5-HTR2B, 5-HTR2C, 5-HTR3A, 5-HTR4, 5-HTR5A, and 5-HTR7. We confirmed that the expression of tyrosine hydroxylase (TH) and NAT was well matched in all chick dopaminergic nuclei examined. This supported that the compensation of the function of dopamine transporter (DAT) by NAT is a general property of avian dopaminergic neurons. Furthermore, we showed that 5-HTR1A and 5-HTR1B were expressed in midbrain dopaminergic nuclei, suggesting the serotonergic regulation of the dopaminergic system via these receptors in chicks. Our findings will help us understand the interactions between the dopaminergic and serotonergic systems in birds at the molecular level.
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Affiliation(s)
- Toshiyuki Fujita
- Department of Biological Sciences, Faculty of Pharmaceutical Sciences, Teikyo University, Tokyo, Japan
| | - Naoya Aoki
- Department of Molecular Biology, Faculty of Pharmaceutical Sciences, Teikyo University, Tokyo, Japan
| | - Chihiro Mori
- Department of Molecular Biology, Faculty of Pharmaceutical Sciences, Teikyo University, Tokyo, Japan
| | - Shouta Serizawa
- Department of Molecular Biology, Faculty of Pharmaceutical Sciences, Teikyo University, Tokyo, Japan
| | - Fumiko Kihara-Negishi
- Department of Biological Sciences, Faculty of Pharmaceutical Sciences, Teikyo University, Tokyo, Japan
| | - Koichi J. Homma
- Department of Molecular Biology, Faculty of Pharmaceutical Sciences, Teikyo University, Tokyo, Japan
| | - Shinji Yamaguchi
- Department of Biological Sciences, Faculty of Pharmaceutical Sciences, Teikyo University, Tokyo, Japan
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12
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Environmentally-relevant concentrations of the antipsychotic drugs sulpiride and clozapine induce abnormal dopamine and serotonin signaling in zebrafish brain. Sci Rep 2022; 12:17973. [PMID: 36289270 PMCID: PMC9606268 DOI: 10.1038/s41598-022-22169-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 10/11/2022] [Indexed: 01/24/2023] Open
Abstract
The presence of drugs in surface and groundwaters adversely affects the physiological function of non-target organisms due special activities that can pose a serious threats to various forms of aquatic life. Psychotropic drugs are one of the most commonly used drugs in the world. Hence, the aim of this study was to investigate the effect of environmentally-relevant concentrations of the antipsychotic drugs, sulpiride and clozapine, on dopaminergic (DAergic) and serotonergic (5-HTergic) neurotransmitter systems in the brain of zebrafish. Adult zebrafish (AB strain) were exposed to the environmentally-relevant concentrations of sulpiride, clozapine, or a mixture of sulpiride and clozapine. The effects of the drugs on the mRNA and protein levels of major functional molecules in DAergic and 5-HTergic systems were then analyzed in the telencephalon and diencephalon. Both drugs induced abnormal mRNA and protein levels of important functional molecules of the DA and 5-HT signaling pathways in both telencephalon and diencephalon, as shown by the abnormal transcriptional levels of TH, DAT, DR D1, DR D2, MAO, TPH, serotonin transporter (SERT), 5-HTR 1AA, 5-HTR 1B, 5-THR 2AA, and 5-HTR 2B, and the abnormal translational levels of DAT, DR D2, SERT, 5-HTR 1A, 5-HTR 1B, and 5-HTR 2B. In addition, we observed a specificity in the adverse effects of these antipsychotic drugs, in terms of doses and brain parts. Compared to their effects alone, the drug mixture had a weaker effect on the DA and 5-HT systems, suggesting an antagonistic interaction between sulpiride and clozapine. Our findings suggest that sulpiride and clozapine interfere with DAergic and 5-HTergic neurotransmitter systems in the telencephalon and diencephalon of zebrafish, resulting in possible effects on brain functions and posing a serious threat to the health of zebrafish.
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13
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Coray R, Quednow BB. The role of serotonin in declarative memory: A systematic review of animal and human research. Neurosci Biobehav Rev 2022; 139:104729. [PMID: 35691469 DOI: 10.1016/j.neubiorev.2022.104729] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 05/13/2022] [Accepted: 06/06/2022] [Indexed: 10/18/2022]
Abstract
The serotonergic system is involved in diverse cognitive functions including memory. Of particular importance to daily life are declarative memories that contain information about personal experiences, general facts, and events. Several psychiatric or neurological diseases, such as depression, attention-deficit-hyperactivity disorder (ADHD), and dementia, show alterations in serotonergic signalling and attendant memory disorders. Nevertheless, understanding serotonergic neurotransmission and its influence on memory remained a challenge until today. In this systematic review, we summarize recent psychopharmacological studies in animals and humans from a psychological memory perspective, in consideration of task-specific requirements. This approach has the advantage that comparisons between serotonin (5-HT)-related neurochemical mechanisms and manipulations are each addressing specific mnemonic circuits. We conclude that applications of the same 5-HT-related treatments can differentially affect unrelated tasks of declarative memories. Moreover, the analysis of specific mnemonic phases (e.g., encoding vs. consolidation) reveals opposing impacts of increased or decreased 5-HT tones, with low 5-HT supporting spatial encoding but impairing the consolidation of objects and verbal memories. Promising targets for protein synthesis-dependent consolidation enhancements include 5-HT4 receptor agonists and 5-HT6 receptor antagonists, with the latter being of special interest for the treatment of age-related decline. Further implications are pointed out as base for the development of novel therapeutic targets for memory impairment of neuropsychiatric disorders.
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Affiliation(s)
- Rebecca Coray
- Experimental and Clinical Pharmacopsychology, Department of Psychiatry, Psychotherapy, and Psychosomatics, Psychiatric University Hospital Zurich, University of Zurich, Switzerland; Neuroscience Center Zurich, University of Zurich and Swiss Federal Institute of Technology Zurich, Switzerland.
| | - Boris B Quednow
- Experimental and Clinical Pharmacopsychology, Department of Psychiatry, Psychotherapy, and Psychosomatics, Psychiatric University Hospital Zurich, University of Zurich, Switzerland; Neuroscience Center Zurich, University of Zurich and Swiss Federal Institute of Technology Zurich, Switzerland
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14
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Dagher M, Perrotta KA, Erwin SA, Hachisuka A, Iyer R, Masmanidis SC, Yang H, Andrews AM. Optogenetic Stimulation of Midbrain Dopamine Neurons Produces Striatal Serotonin Release. ACS Chem Neurosci 2022; 13:946-958. [PMID: 35312275 PMCID: PMC9040469 DOI: 10.1021/acschemneuro.1c00715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Targeting neurons with light-driven opsins is widely used to investigate cell-specific responses. We transfected midbrain dopamine neurons with the excitatory opsin Chrimson. Extracellular basal and stimulated neurotransmitter levels in the dorsal striatum were measured by microdialysis in awake mice. Optical activation of dopamine cell bodies evoked terminal dopamine release in the striatum. Multiplexed analysis of dialysate samples revealed that the evoked dopamine was accompanied by temporally coupled increases in striatal 3-methoxytyramine, an extracellular dopamine metabolite, and in serotonin. We investigated a mechanism for dopamine-serotonin interactions involving striatal dopamine receptors. However, the evoked serotonin associated with optical stimulation of dopamine neurons was not abolished by striatal D1- or D2-like receptor inhibition. Although the mechanisms underlying the coupling of striatal dopamine and serotonin remain unclear, these findings illustrate advantages of multiplexed measurements for uncovering functional interactions between neurotransmitter systems. Furthermore, they suggest that the output of optogenetic manipulations may extend beyond opsin-expressing neuronal populations.
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Affiliation(s)
- Merel Dagher
- Molecular Toxicology Interdepartmental Program, University of California, Los Angeles, Los Angeles, CA 90095, United States
| | - Katie A. Perrotta
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095, United States
| | - Sara A. Erwin
- Molecular Toxicology Interdepartmental Program, University of California, Los Angeles, Los Angeles, CA 90095, United States
| | - Ayaka Hachisuka
- Department of Neurobiology, University of California, Los Angeles, Los Angeles, CA 90095, United States
| | - Rahul Iyer
- Department of Electrical Engineering, University of California, Los Angeles, Los Angeles, CA, 94720
| | - Sotiris C. Masmanidis
- Department of Neurobiology, University of California, Los Angeles, Los Angeles, CA 90095, United States
- Neuroscience Interdepartmental Program, University of California, Los Angeles, Los Angeles, CA 90095, United States
- California Nanosystems Institute, University of California, Los Angeles, Los Angeles, CA 90095, United States
| | - Hongyan Yang
- Department of Psychiatry and Biobehavioral Sciences, Semel Institute for Neuroscience & Human Behavior, and Hatos Center for Neuropharmacology, University of California, Los Angeles, Los Angeles, CA 90095, United States
| | - Anne M. Andrews
- Molecular Toxicology Interdepartmental Program, University of California, Los Angeles, Los Angeles, CA 90095, United States
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095, United States
- Neuroscience Interdepartmental Program, University of California, Los Angeles, Los Angeles, CA 90095, United States
- Department of Psychiatry and Biobehavioral Sciences, Semel Institute for Neuroscience & Human Behavior, and Hatos Center for Neuropharmacology, University of California, Los Angeles, Los Angeles, CA 90095, United States
- California Nanosystems Institute, University of California, Los Angeles, Los Angeles, CA 90095, United States
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15
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Jiang X, Liang P, Wang K, Jia J, Wang X. Serotonin 1A receptor agonist modulation of motor deficits and cortical oscillations by NMDA receptor interaction in parkinsonian rats. Neuropharmacology 2022; 203:108881. [PMID: 34785162 DOI: 10.1016/j.neuropharm.2021.108881] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 10/15/2021] [Accepted: 11/08/2021] [Indexed: 12/11/2022]
Abstract
Although serotonin 1A (5-HT1A) receptor agonists are widely used as the additive compound to reduce l-dopa-induced dyskinesia in Parkinson's disease (PD), few studies focused on the effect and mechanism of 5-HT1A receptor agonist on the motor symptoms of PD. Unilateral 6-hydroxydopamine (6-OHDA)-lesioned rats were used and implantation of electrodes was performed in the motor cortex of these rats. So the effect of 5-HT1A receptor agonist 8-OH-DPAT on motor behaviors and oscillatory activities were evaluated. In addition, 8-OH-DPAT combined with D2 receptor antagonist raclopride, NMDA receptor antagonist MK-801, or its agonist d-cycloserine (DCS) were co-administrated. 8-OH-DPAT administration significantly improved spontaneous locomotor activity and asymmetric forepaw function in 6-OHDA-lesioned rats. Meanwhile, 8-OH-DPAT identified selective modulation of the abnormal high beta oscillations (25-40 Hz) in the motor cortex of 6-OHDA-lesioned rats, without inducing pathological finely tuned gamma around 80 Hz. Different from 8-OH-DPAT, l-dopa treatment produced a prolonged improvement on motor performances and differential regulation of high beta and gamma oscillations. However, dopamine D2 receptor antagonist had no influence on the 8-OH-DPAT-mediated-motor behaviors and beta oscillations in 6-OHDA-lesioned rats. In contrast, subthreshold NMDA receptor antagonist MK-801 obviously elevated the 8-OH-DPAT-mediated-motor behaviors, while NMDA receptor agonist DCS partially impaired the 8-OH-DPAT-mediated symptoms in 6-OHDA-lesioned rats. This study suggests that 5-HT1A receptor agonist 8-OH-DPAT improves motor activity and modulates the oscillations in the motor cortex of parkinsonian rats. Different from l-dopa, 8-OH-DPAT administration ameliorates motor symptoms of PD through glutamatergic rather than the dopaminergic pathway.
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Affiliation(s)
- Xinxin Jiang
- Departments of Neurobiology and Physiology, Capital Medical University, Beijing, 100069, China.
| | - Peirong Liang
- Departments of Neurobiology and Physiology, Capital Medical University, Beijing, 100069, China.
| | - Ke Wang
- Departments of Neurobiology and Physiology, Capital Medical University, Beijing, 100069, China.
| | - Jun Jia
- Departments of Neurobiology and Physiology, Capital Medical University, Beijing, 100069, China.
| | - Xiaomin Wang
- Departments of Neurobiology and Physiology, Capital Medical University, Beijing, 100069, China.
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16
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Yee DM, Leng X, Shenhav A, Braver TS. Aversive motivation and cognitive control. Neurosci Biobehav Rev 2022; 133:104493. [PMID: 34910931 PMCID: PMC8792354 DOI: 10.1016/j.neubiorev.2021.12.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 11/12/2021] [Accepted: 12/09/2021] [Indexed: 02/03/2023]
Abstract
Aversive motivation plays a prominent role in driving individuals to exert cognitive control. However, the complexity of behavioral responses attributed to aversive incentives creates significant challenges for developing a clear understanding of the neural mechanisms of this motivation-control interaction. We review the animal learning, systems neuroscience, and computational literatures to highlight the importance of experimental paradigms that incorporate both motivational context manipulations and mixed motivational components (e.g., bundling of appetitive and aversive incentives). Specifically, we postulate that to understand aversive incentive effects on cognitive control allocation, a critical contextual factor is whether such incentives are associated with negative reinforcement or punishment. We further illustrate how the inclusion of mixed motivational components in experimental paradigms enables increased precision in the measurement of aversive influences on cognitive control. A sharpened experimental and theoretical focus regarding the manipulation and assessment of distinct motivational dimensions promises to advance understanding of the neural, monoaminergic, and computational mechanisms that underlie the interaction of motivation and cognitive control.
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Affiliation(s)
- Debbie M Yee
- Cognitive, Linguistic, and Psychological Sciences, Brown University, USA; Carney Institute for Brain Science, Brown University, USA; Department of Psychological and Brain Sciences, Washington University in Saint Louis, USA.
| | - Xiamin Leng
- Cognitive, Linguistic, and Psychological Sciences, Brown University, USA; Carney Institute for Brain Science, Brown University, USA
| | - Amitai Shenhav
- Cognitive, Linguistic, and Psychological Sciences, Brown University, USA; Carney Institute for Brain Science, Brown University, USA
| | - Todd S Braver
- Department of Psychological and Brain Sciences, Washington University in Saint Louis, USA
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17
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De Guzman RM, Rosinger ZJ, Parra KE, Jacobskind JS, Justice NJ, Zuloaga DG. Alterations in corticotropin-releasing factor receptor type 1 in the preoptic area and hypothalamus in mice during the postpartum period. Horm Behav 2021; 135:105044. [PMID: 34507241 PMCID: PMC8653990 DOI: 10.1016/j.yhbeh.2021.105044] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 07/16/2021] [Accepted: 08/06/2021] [Indexed: 01/24/2023]
Abstract
Corticotropin-releasing factor (CRF) signaling through CRF receptor 1 (CRFR1) regulates autonomic, endocrine, and behavioral responses to stress, as well as behavioral changes during the maternal period. Previous work in our lab reported higher levels of CRFR1 in female, compared to male, mice within the rostral anteroventral periventricular nucleus (AVPV/PeN), a brain region involved in maternal behaviors. In this study, we used CRFR1-GFP reporter mice to investigate whether the reproductive status (postpartum vs. nulliparous) of acutely stressed females affects levels of CRFR1 in the AVPV/PeN and other regions involved in maternal functions. Compared to nulliparous, postpartum day 14 females showed increased AVPV/PeN CRFR1-GFP immunoreactivity and an elevated number of restraint stress-activated AVPV/PeN CRFR1 cells as assessed by immunohistochemical co-localization of CRFR1-GFP and phosphorylated CREB (pCREB). The medial preoptic area (MPOA) and paraventricular hypothalamus (PVN) of postpartum mice showed modest decreases in CRFR1-GFP immunoreactivity, while increased CRFR1-GFP/pCREB co-expressing cells were found in the PVN following restraint stress relative to nulliparous mice. Tyrosine hydroxylase (TH) and CRFR1-GFP co-localization was also assessed in the AVPV/PeN and other regions and revealed a decrease in co-localized neurons in the AVPV/PeN and ventral tegmental area of postpartum mice. Corticosterone analysis of restrained mice revealed blunted peak, but elevated recovery, levels in postpartum compared to nulliparous mice. Finally, we investigated projection patterns of AVPV/PeN CRFR1 neurons using female CRFR1-Cre mice and revealed dense efferent projections to several preoptic, hypothalamic, and hindbrain regions known to control stress-associated and maternal functions. Together, these findings contribute to our understanding of the neurobiology that might underlie changes in stress-related functions during the postpartum period.
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Affiliation(s)
- Rose M De Guzman
- Department of Psychology, University at Albany, State University New York, 1400 Washington Avenue, Albany, NY 12222, United States
| | - Zachary J Rosinger
- Department of Psychology, University at Albany, State University New York, 1400 Washington Avenue, Albany, NY 12222, United States
| | - Katherine E Parra
- Department of Psychology, University at Albany, State University New York, 1400 Washington Avenue, Albany, NY 12222, United States
| | - Jason S Jacobskind
- Department of Psychology, University at Albany, State University New York, 1400 Washington Avenue, Albany, NY 12222, United States
| | - Nicholas J Justice
- Center for Metabolic and Degenerative Diseases, Institute of Molecular Medicine, University of Texas Health Sciences Center, Houston, TX, United States
| | - Damian G Zuloaga
- Department of Psychology, University at Albany, State University New York, 1400 Washington Avenue, Albany, NY 12222, United States.
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