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Oshri A, Howard CJ, Zhang L, Reck A, Cui Z, Liu S, Duprey E, Evans AI, Azarmehr R, Geier CF. Strengthening through adversity: The hormesis model in developmental psychopathology. Dev Psychopathol 2024:1-17. [PMID: 38532735 DOI: 10.1017/s0954579424000427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2024]
Abstract
BACKGROUND Employing a developmental psychopathology framework, we tested the utility of the hormesis model in examining the strengthening of children and youth through limited levels of adversity in relation to internalizing and externalizing outcomes within a brain-by-development context. METHODS Analyzing data from the Adolescent Brain and Cognitive Development study (N = 11,878), we formed latent factors of threat, deprivation, and unpredictability. We examined linear and nonlinear associations between adversity dimensions and youth psychopathology symptoms and how change of resting-state functional connectivity (rsFC) in the default mode network (DMN) from Time 1 to Time 5 moderates these associations. RESULTS A cubic association was found between threat and youth internalizing problems; low-to-moderate family conflict levels reduced these problems. Deprivation also displayed a cubic relation with youth externalizing problems, with moderate deprivation levels associated with fewer problems. Unpredictability linearly increased both problem types. Change in DMN rsFC significantly moderated the cubic link between threat levels and internalizing problems, with declining DMN rsFC levels from Time 1 to Time 5 facilitating hormesis. Hormetic effects peaked earlier, emphasizing the importance of sensitive periods and developmental timing of outcomes related to earlier experiences. CONCLUSIONS Strengthening through limited environmental adversity is crucial for developing human resilience. Understanding this process requires considering both linear and nonlinear adversity-psychopathology associations. Testing individual differences by brain and developmental context will inform preventive intervention programming.
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Affiliation(s)
- Assaf Oshri
- Department of Human Development and Family Science, University of Georgia, Athens, GA, USA
| | - Cullin J Howard
- Department of Human Development and Family Science, University of Georgia, Athens, GA, USA
| | - Linhao Zhang
- Department of Human Development and Family Science, University of Georgia, Athens, GA, USA
| | - Ava Reck
- Department of Human Development and Family Science, University of Georgia, Athens, GA, USA
| | - Zehua Cui
- Department of Psychology, University of Maryland, College Park, MD, USA
| | - Sihong Liu
- Graduate School of Education, Stanford University, Palo Alto, CA, USA
| | - Erinn Duprey
- Department of Psychology, University of Rochester, Rochester, NY, USA
| | - Avary I Evans
- Department of Human Development and Family Science, University of Georgia, Athens, GA, USA
| | - Rabeeh Azarmehr
- Department of Human Development and Family Science, University of Georgia, Athens, GA, USA
| | - Charles F Geier
- Department of Human Development and Family Science, University of Georgia, Athens, GA, USA
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Kirse HA, Bahrami M, Lyday RG, Simpson SL, Peterson-Sockwell H, Burdette JH, Laurienti PJ. Differences in Brain Network Topology Based on Alcohol Use History in Adolescents. Brain Sci 2023; 13:1676. [PMID: 38137124 PMCID: PMC10741456 DOI: 10.3390/brainsci13121676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 11/10/2023] [Accepted: 11/28/2023] [Indexed: 12/24/2023] Open
Abstract
Approximately 6 million youth aged 12 to 20 consume alcohol monthly in the United States. The effect of alcohol consumption in adolescence on behavior and cognition is heavily researched; however, little is known about how alcohol consumption in adolescence may alter brain function, leading to long-term developmental detriments. In order to investigate differences in brain connectivity associated with alcohol use in adolescents, brain networks were constructed using resting-state functional magnetic resonance imaging data collected by the National Consortium on Alcohol and NeuroDevelopment in Adolescence (NCANDA) from 698 youth (12-21 years; 117 hazardous drinkers and 581 no/low drinkers). Analyses assessed differences in brain network topology based on alcohol consumption in eight predefined brain networks, as well as in whole-brain connectivity. Within the central executive network (CEN), basal ganglia network (BGN), and sensorimotor network (SMN), no/low drinkers demonstrated stronger and more frequent connections between highly globally efficient nodes, with fewer and weaker connections between highly clustered nodes. Inverse results were observed within the dorsal attention network (DAN), visual network (VN), and frontotemporal network (FTN), with no/low drinkers demonstrating weaker connections between nodes with high efficiency and increased frequency of clustered nodes compared to hazardous drinkers. Cross-sectional results from this study show clear organizational differences between adolescents with no/low or hazardous alcohol use, suggesting that aberrant connectivity in these brain networks is associated with risky drinking behaviors.
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Affiliation(s)
- Haley A. Kirse
- Laboratory for Complex Brain Networks, Wake Forest School of Medicine, Winston-Salem, NC 27101, USA; (H.A.K.); (M.B.); (R.G.L.); (S.L.S.); (H.P.-S.); (J.H.B.)
- Graduate Program, Wake Forest Graduate School of Arts and Sciences, Integrative Physiology and Pharmacology, Winston-Salem, NC 27101, USA
| | - Mohsen Bahrami
- Laboratory for Complex Brain Networks, Wake Forest School of Medicine, Winston-Salem, NC 27101, USA; (H.A.K.); (M.B.); (R.G.L.); (S.L.S.); (H.P.-S.); (J.H.B.)
- Department of Radiology, Wake Forest School of Medicine, Winston-Salem, NC 27101, USA
| | - Robert G. Lyday
- Laboratory for Complex Brain Networks, Wake Forest School of Medicine, Winston-Salem, NC 27101, USA; (H.A.K.); (M.B.); (R.G.L.); (S.L.S.); (H.P.-S.); (J.H.B.)
- Department of Radiology, Wake Forest School of Medicine, Winston-Salem, NC 27101, USA
| | - Sean L. Simpson
- Laboratory for Complex Brain Networks, Wake Forest School of Medicine, Winston-Salem, NC 27101, USA; (H.A.K.); (M.B.); (R.G.L.); (S.L.S.); (H.P.-S.); (J.H.B.)
- Department of Biostatistics and Data Science, Wake Forest School of Medicine, Winston-Salem, NC 27101, USA
| | - Hope Peterson-Sockwell
- Laboratory for Complex Brain Networks, Wake Forest School of Medicine, Winston-Salem, NC 27101, USA; (H.A.K.); (M.B.); (R.G.L.); (S.L.S.); (H.P.-S.); (J.H.B.)
| | - Jonathan H. Burdette
- Laboratory for Complex Brain Networks, Wake Forest School of Medicine, Winston-Salem, NC 27101, USA; (H.A.K.); (M.B.); (R.G.L.); (S.L.S.); (H.P.-S.); (J.H.B.)
- Department of Radiology, Wake Forest School of Medicine, Winston-Salem, NC 27101, USA
| | - Paul J. Laurienti
- Laboratory for Complex Brain Networks, Wake Forest School of Medicine, Winston-Salem, NC 27101, USA; (H.A.K.); (M.B.); (R.G.L.); (S.L.S.); (H.P.-S.); (J.H.B.)
- Department of Radiology, Wake Forest School of Medicine, Winston-Salem, NC 27101, USA
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Li X, Long Y, Yang C, Li Q, Lu W, Gao J. Research on psychophysiological characteristics of construction workers during consciously unsafe behaviors. Heliyon 2023; 9:e20484. [PMID: 37860507 PMCID: PMC10582316 DOI: 10.1016/j.heliyon.2023.e20484] [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: 12/09/2022] [Revised: 09/20/2023] [Accepted: 09/26/2023] [Indexed: 10/21/2023] Open
Abstract
Workers' unsafe behavior is a primary cause leading to falling accidents on construction sites. This study aimed to explore how to utilize psychophysiological characteristics to predict consciously unsafe behaviors of construction workers. In this paper, a psychological questionnaire was compiled to measure risky psychology, and wireless wearable physiological recorders were employed to real-timely measure the physiological signals of subjects. The psychological and physiological characteristics were identified by correlation analysis and significance test, which were then utilized to develop unsafe behavior prediction models based on multiple linear regression and decision tree regressor. It was revealed that unsafe behavior performance was negatively correlated with task-related risk perception, while positively correlated with hazardous attitude. Subjects experienced remarkable increases in skin conductivity, while notable decreases in the inter-beat interval and skin temperature during consciously unsafe behavior. Both models developed for predicting unsafe behavior were reliably and well-fitted with coefficients of determination higher than 0.8. Whereas, each model exhibited its unique advantages in terms of prediction accuracy and interpretability. Not only could study results contribute to the body of knowledge on intrinsic mechanisms of unsafe behavior, but also provide a theoretical basis for the automatic identification of workers' unsafe behavior.
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Affiliation(s)
- Xiangchun Li
- School of Emergency Management and Safety Engineering, China University of Mining and Technology-Beijing, Beijing, 100083, China
- State Key Laboratory of Explosion Science and Technology (Beijing Institute of Technology), Beijing, 100081, China
| | - Yuzhen Long
- School of Emergency Management and Safety Engineering, China University of Mining and Technology-Beijing, Beijing, 100083, China
| | - Chunli Yang
- Occupational Hazards Control Technology Center, Institute of Urban Safety and Environmental Science, Beijing Academy of Science and Technology, Beijing, 100054, China
| | - Qin Li
- Beijing Shunjinsheng Construction Engineering Supervision Co., Ltd., Beijing, 101399, China
| | - Weidong Lu
- Department of Safety Engineering, Xinjiang Institute of Engineering, Urumqi, 830023, China
| | - Jiaxing Gao
- Hubei University of Automotive Technology, Shiyan, 442002, China
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Wasserman AM, Wood EE, Mathias CW, Moon TJ, Hill-Kapturczak N, Roache JD, Dougherty DM. The age-varying effects of adolescent stress on impulsivity and sensation seeking. JOURNAL OF RESEARCH ON ADOLESCENCE : THE OFFICIAL JOURNAL OF THE SOCIETY FOR RESEARCH ON ADOLESCENCE 2023; 33:1011-1022. [PMID: 37208844 PMCID: PMC10524149 DOI: 10.1111/jora.12854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 06/21/2022] [Accepted: 04/12/2023] [Indexed: 05/21/2023]
Abstract
Adolescence is defined in part by heightened exposure and sensitivity to stressors. In a longitudinal cohort of youth at risk for substance use problems, we examined the age-varying relationship between stress exposure and traits that are central to the dual systems model. The positive associations between stress exposure, impulsivity, sensation seeking varied as function of age. Specifically, the influence of stress exposure on impulsivity strengthened during early adolescence and remained stable into early adulthood, while the influence of stress exposure on sensation seeking strengthened from early- to mid-adolescence and weakened thereafter. These findings suggest that the maturational imbalance between the capacity to regulate impulsive tendencies and sensation seeking may be exaggerated for youth who are exposed to a high number of stressors.
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Affiliation(s)
| | - Erin E Wood
- The University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA
| | - Charles W Mathias
- The University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA
| | - Tae Joon Moon
- The University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA
| | | | - John D Roache
- The University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA
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Feldstein Ewing SW, Karalunas SL, Kenyon EA, Yang M, Hudson KA, Filbey FM. Intersection between social inequality and emotion regulation on emerging adult cannabis use. DRUG AND ALCOHOL DEPENDENCE REPORTS 2022; 3:100050. [PMID: 35694031 PMCID: PMC9187048 DOI: 10.1016/j.dadr.2022.100050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 03/07/2022] [Accepted: 03/28/2022] [Indexed: 05/29/2023]
Abstract
Emerging adulthood (EA; ages 18-25) is characterized by socioemotional and neurodevelopmental challenges. Cannabis is a widely used substance among EAs, and hazardous use may increase risk for sustained use patterns and related health consequences. Research shows differential increases in hazardous use by objective as well as subjective measures of social inequality, with more concerning trajectories for youth with greater experiences of social inequality. Learning how to flexibly monitor and modify emotions in proactive ways (i.e., emotion regulation) is a central developmental task navigated during the EA window. Challenges to and with emotion regulation processes can contribute to the emergence of mental health symptoms during EA, including hazardous cannabis use. In this perspective, we highlight emotion dysregulation and social inequality as two critical factors that interact to either buffer against or exacerbate cannabis use during the EA period, noting critical gaps in the literature that merit additional research. We recommend novel methods and longitudinal designs to help clarify how dynamic cognition-emotion interplay predicts trajectories of negative emotional experiences and cannabis use in EA.
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Ventral striatal resting-state functional connectivity in adolescents is associated with earlier onset of binge drinking. Drug Alcohol Depend 2021; 227:109010. [PMID: 34488072 PMCID: PMC8464521 DOI: 10.1016/j.drugalcdep.2021.109010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 08/17/2021] [Accepted: 08/17/2021] [Indexed: 11/21/2022]
Abstract
BACKGROUND Earlier engagement in heavy drinking during adolescence is a risk factor for the development of alcohol use disorders later in life. Longitudinal studies in adolescents have linked brain structure and task-evoked function to future alcohol use; however, less is known about how intrinsic network-level interactions relate to future substance use during this developmental period. METHODS In this prospective longitudinal study, resting-state functional connectivity of the ventral striatum, risky decision making, and sensation seeking were measured in 73 adolescents at baseline. Participants were between the ages of 14 and 15 and had no substantial history of substance use upon study entry. Follow-up interviews were conducted approximately every 3 months to assess the initiation of binge drinking (≥ 5 or ≥ 4 drinks per occasion for males or females, respectively). RESULTS Adolescents who began binge drinking sooner exhibited greater connectivity of the ventral striatum to the left precuneus, left angular gyrus, and the left superior frontal gyrus. Greater connectivity of the ventral striatum to the right insula/putamen was associated with longer duration to the onset of binge drinking. Resting-state functional connectivity in these regions was not associated with baseline assessments of risky decision making or sensation seeking. CONCLUSIONS Findings provide novel information about potential risk factors for early initiation of heavy alcohol use. Interventions that target relevant resting-state networks may enhance prevention efforts to decrease adolescent substance use by prolonging onset to heavier levels of alcohol consumption.
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Hindley G, Bahrami S, Steen NE, O'Connell KS, Frei O, Shadrin A, Bettella F, Rødevand L, Fan CC, Dale AM, Djurovic S, Smeland OB, Andreassen OA. Characterising the shared genetic determinants of bipolar disorder, schizophrenia and risk-taking. Transl Psychiatry 2021; 11:466. [PMID: 34497263 PMCID: PMC8426401 DOI: 10.1038/s41398-021-01576-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 07/19/2021] [Accepted: 08/18/2021] [Indexed: 02/08/2023] Open
Abstract
Increased risk-taking is a central component of bipolar disorder (BIP) and is implicated in schizophrenia (SCZ). Risky behaviours, including smoking and alcohol use, are overrepresented in both disorders and associated with poor health outcomes. Positive genetic correlations are reported but an improved understanding of the shared genetic architecture between risk phenotypes and psychiatric disorders may provide insights into underlying neurobiological mechanisms. We aimed to characterise the genetic overlap between risk phenotypes and SCZ, and BIP by estimating the total number of shared variants using the bivariate causal mixture model and identifying shared genomic loci using the conjunctional false discovery rate method. Summary statistics from genome wide association studies of SCZ, BIP, risk-taking and risky behaviours were acquired (n = 82,315-466,751). Genomic loci were functionally annotated using FUMA. Of 8.6-8.7 K variants predicted to influence BIP, 6.6 K and 7.4 K were predicted to influence risk-taking and risky behaviours, respectively. Similarly, of 10.2-10.3 K variants influencing SCZ, 9.6 and 8.8 K were predicted to influence risk-taking and risky behaviours, respectively. We identified 192 loci jointly associated with SCZ and risk phenotypes and 206 associated with BIP and risk phenotypes, of which 68 were common to both risk-taking and risky behaviours and 124 were novel to SCZ or BIP. Functional annotation implicated differential expression in multiple cortical and sub-cortical regions. In conclusion, we report extensive polygenic overlap between risk phenotypes and BIP and SCZ, identify specific loci contributing to this shared risk and highlight biologically plausible mechanisms that may underlie risk-taking in severe psychiatric disorders.
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Affiliation(s)
- Guy Hindley
- NORMENT, Institute of Clinical Medicine, University of Oslo and Division of Mental Health and Addiction, Oslo University Hospital, 0407, Oslo, Norway.
- Psychosis Studies, Institute of Psychiatry, Psychology and Neurosciences, King's College London, London, UK.
| | - Shahram Bahrami
- NORMENT, Institute of Clinical Medicine, University of Oslo and Division of Mental Health and Addiction, Oslo University Hospital, 0407, Oslo, Norway
| | - Nils Eiel Steen
- NORMENT, Institute of Clinical Medicine, University of Oslo and Division of Mental Health and Addiction, Oslo University Hospital, 0407, Oslo, Norway
| | - Kevin S O'Connell
- NORMENT, Institute of Clinical Medicine, University of Oslo and Division of Mental Health and Addiction, Oslo University Hospital, 0407, Oslo, Norway
| | - Oleksandr Frei
- NORMENT, Institute of Clinical Medicine, University of Oslo and Division of Mental Health and Addiction, Oslo University Hospital, 0407, Oslo, Norway
- Center for Bioinformatics, Department of Informatics, University of Oslo, Blindern, 0316, Oslo, Norway
| | - Alexey Shadrin
- NORMENT, Institute of Clinical Medicine, University of Oslo and Division of Mental Health and Addiction, Oslo University Hospital, 0407, Oslo, Norway
| | - Francesco Bettella
- NORMENT, Institute of Clinical Medicine, University of Oslo and Division of Mental Health and Addiction, Oslo University Hospital, 0407, Oslo, Norway
| | - Linn Rødevand
- NORMENT, Institute of Clinical Medicine, University of Oslo and Division of Mental Health and Addiction, Oslo University Hospital, 0407, Oslo, Norway
| | - Chun C Fan
- Department of Neurology, Division of Clinical Neuroscience, Oslo University Hospital, Oslo, Norway
- Multimodal Imaging Laboratory, University of California San Diego, La Jolla, CA, 92093, USA
| | - Anders M Dale
- Department of Neurology, Division of Clinical Neuroscience, Oslo University Hospital, Oslo, Norway
- Department of Radiology, University of California, San Diego, La Jolla, CA, 92093, USA
- Department of Cognitive Science, University of California, San Diego, La Jolla, CA, USA
- Department of Psychiatry, University of California, San Diego, La Jolla, CA, USA
| | - Srdjan Djurovic
- Department of Medical Genetics, Oslo University Hospital, Oslo, Norway
- NORMENT, Department of Clinical Science, University of Bergen, Bergen, Norway
| | - Olav B Smeland
- NORMENT, Institute of Clinical Medicine, University of Oslo and Division of Mental Health and Addiction, Oslo University Hospital, 0407, Oslo, Norway
| | - Ole A Andreassen
- NORMENT, Institute of Clinical Medicine, University of Oslo and Division of Mental Health and Addiction, Oslo University Hospital, 0407, Oslo, Norway.
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Bystritsky A, Spivak NM, Dang BH, Becerra SA, Distler MG, Jordan SE, Kuhn TP. Brain circuitry underlying the ABC model of anxiety. J Psychiatr Res 2021; 138:3-14. [PMID: 33798786 DOI: 10.1016/j.jpsychires.2021.03.030] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 03/12/2021] [Accepted: 03/17/2021] [Indexed: 12/13/2022]
Abstract
Anxiety Disorders are prevalent and often chronic, recurrent conditions that reduce quality of life. The first-line treatments, such as serotonin reuptake inhibitors and cognitive behavioral therapy, leave a significant proportion of patients symptomatic. As psychiatry moves toward targeted circuit-based treatments, there is a need for a theory that unites the phenomenology of anxiety with its underlying neural circuits. The Alarm, Belief, Coping (ABC) theory of anxiety describes how the neural circuits associated with anxiety interact with each other and domains of the anxiety symptoms, both temporally and spatially. The latest advancements in neuroimaging techniques offer the ability to assess these circuits in vivo. Using Neurosynth, a large open-access meta-analytic imaging database, the association between terms related to specific neural circuits was explored within the ABC theory framework. Alarm-related terms were associated with the amygdala, anterior cingulum, insula, and bed nucleus of stria terminalis. Belief-related terms were associated with medial prefrontal cortex, precuneus, bilateral temporal poles, and hippocampus. Coping-related terms were associated with the ventrolateral and dorsolateral prefrontal cortices, basal ganglia, and anterior cingulate. Neural connections underlying the functional neuroanatomy of the ABC model were observed. Additionally, there was considerable interaction and overlap between circuits associated with the symptom domains. Further neuroimaging research is needed to explore the dynamic interaction between the functional domains of the ABC theory. This will pave the way for probing the neuroanatomical underpinnings of anxiety disorders and provide an evidence-based foundation for the development of targeted treatments, such as neuromodulation.
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Affiliation(s)
- Alexander Bystritsky
- Department of Psychiatry and Biobehavioral Sciences, UCLA, Los Angeles, CA, USA; BrainSonix Corporation, Sherman Oaks, CA, USA.
| | - Norman M Spivak
- Department of Psychiatry and Biobehavioral Sciences, UCLA, Los Angeles, CA, USA; Department of Neurosurgery, UCLA, Los Angeles, CA, USA; David Geffen School of Medicine, UCLA, Los Angeles, CA, USA
| | - Bianca H Dang
- Department of Psychiatry and Biobehavioral Sciences, UCLA, Los Angeles, CA, USA
| | - Sergio A Becerra
- Department of Psychiatry and Biobehavioral Sciences, UCLA, Los Angeles, CA, USA
| | - Margaret G Distler
- Department of Psychiatry and Biobehavioral Sciences, UCLA, Los Angeles, CA, USA
| | - Sheldon E Jordan
- Neurology Management Associates - Los Angeles, Santa Monica, CA, USA
| | - Taylor P Kuhn
- Department of Psychiatry and Biobehavioral Sciences, UCLA, Los Angeles, CA, USA; David Geffen School of Medicine, UCLA, Los Angeles, CA, USA
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Parr AC, Calabro F, Larsen B, Tervo-Clemmens B, Elliot S, Foran W, Olafsson V, Luna B. Dopamine-related striatal neurophysiology is associated with specialization of frontostriatal reward circuitry through adolescence. Prog Neurobiol 2021; 201:101997. [PMID: 33667595 PMCID: PMC8096717 DOI: 10.1016/j.pneurobio.2021.101997] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 01/08/2021] [Accepted: 01/11/2021] [Indexed: 01/09/2023]
Abstract
Characterizing developmental changes in frontostriatal circuitry is critical to understanding adolescent development and can clarify neurobiological mechanisms underlying increased reward sensitivity and risk-taking and the emergence of psychopathology during this period. However, the role of striatal neurobiology in the development of frontostriatal circuitry through human adolescence remains largely unknown. We examined background connectivity during a reward-guided decision-making task ("reward-state"), in addition to resting-state, and assessed the association between age-related changes in frontostriatal connectivity and age-related changes in reward learning and risk-taking through adolescence. Further, we examined the contribution of dopaminergic processes to changes in frontostriatal circuitry and decision-making using MR-based assessments of striatal tissue-iron as a correlate of dopamine-related neurobiology. Connectivity between the nucleus accumbens (NAcc) and ventral anterior cingulate, subgenual cingulate, and orbitofrontal cortices decreased through adolescence into adulthood, and decreases in reward-state connectivity were associated with improvements reward-guided decision-making as well as with decreases in risk-taking. Finally, NAcc tissue-iron mediated age-related changes and was associated with variability in connectivity, and developmental increases in NAcc R2' corresponded with developmental decreases in connectivity. Our results provide evidence that dopamine-related striatal properties contribute to the specialization of frontostriatal circuitry, potentially underlying changes in risk-taking and reward sensitivity into adulthood.
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Affiliation(s)
- Ashley C. Parr
- Department of Psychiatry, University of Pittsburgh, Pittsburgh, PA, 14213, United States
| | - Finnegan Calabro
- Department of Psychiatry, University of Pittsburgh, Pittsburgh, PA, 14213, United States
| | - Bart Larsen
- Department of Psychiatry, University of Pittsburgh, Pittsburgh, PA, 14213, United States
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, United States
| | - Brenden Tervo-Clemmens
- Department of Psychiatry, University of Pittsburgh, Pittsburgh, PA, 14213, United States
| | - Samuel Elliot
- Department of Psychiatry, University of Pittsburgh, Pittsburgh, PA, 14213, United States
| | - Will Foran
- Department of Psychiatry, University of Pittsburgh, Pittsburgh, PA, 14213, United States
| | - Valur Olafsson
- NUBIC, Northeastern University, Boston, MA, 02115, United States
| | - Beatriz Luna
- Department of Psychiatry, University of Pittsburgh, Pittsburgh, PA, 14213, United States
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Sverak T, Linhartova P, Gajdos M, Kuhn M, Latalova A, Lamos M, Ustohal L, Kasparek T. Brain Connectivity and Symptom Changes After Transcranial Magnetic Stimulation in Patients With Borderline Personality Disorder. Front Psychiatry 2021; 12:770353. [PMID: 35115961 PMCID: PMC8804206 DOI: 10.3389/fpsyt.2021.770353] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 12/13/2021] [Indexed: 12/26/2022] Open
Abstract
OBJECTIVES Repetitive transcranial magnetic stimulation (rTMS) is an innovative method in the treatment of borderline personality disorder (BPD). We hypothesized that prefrontal rTMS in patients with BPD leads to improved BPD symptoms and that these effects are associated with brain connectivity changes. METHODS Fourteen patients with BPD received 15 sessions of individually navigated prefrontal rTMS over the right dorsolateral prefrontal cortex. Clinical effects were measured by the Borderline Symptom List 23, UPPS-P, the Difficulties in Emotion Regulation Scale (DERS), the Zung Self-Rating Anxiety Scale (SAS), and the Montgomery and Åsberg Depression Rating Scale (MADRS). Effects of rTMS on brain connectivity were observed with a seed correlation analysis on resting-state fMRI and with a beta series correlation analysis on Go/No Go tasks during fMRI. Assessments were made before and immediately after the treatment. RESULTS The assessments after rTMS showed significant reductions in two subscales of UPPS-P, and in DERS, SAS, and MADRS. The brain connectivity analysis revealed significant decreases in amygdala and insula connectivity with nodes of the posterior default mode network (pDMN; precuneus, posterior cingulate cortex, parietal lobules). Connectivity changes were observed both in the resting state and during inhibition. The decrease of amygdala-pDMN connectivity was positively correlated with reduced depression and lack of premeditation after rTMS. CONCLUSIONS Despite the study limitations (open single-arm study in a small sample), our findings suggest a possible neural mechanism of rTMS effect in BPD, reduced amygdala connectivity with the pDMN network, which was positively associated with symptom reduction.
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Affiliation(s)
- Tomas Sverak
- Department of Psychiatry, University Hospital Brno and Faculty of Medicine, Masaryk University, Brno, Czechia
| | - Pavla Linhartova
- Department of Psychiatry, University Hospital Brno and Faculty of Medicine, Masaryk University, Brno, Czechia
| | - Martin Gajdos
- Multimodal and Functional Imaging Laboratory, Central European Institute of Technology, Masaryk University, Brno, Czechia
| | - Matyas Kuhn
- Department of Psychiatry, University Hospital Brno and Faculty of Medicine, Masaryk University, Brno, Czechia
| | - Adela Latalova
- Department of Psychiatry, University Hospital Brno and Faculty of Medicine, Masaryk University, Brno, Czechia
| | - Martin Lamos
- Multimodal and Functional Imaging Laboratory, Central European Institute of Technology, Masaryk University, Brno, Czechia
| | - Libor Ustohal
- Department of Psychiatry, University Hospital Brno and Faculty of Medicine, Masaryk University, Brno, Czechia
| | - Tomas Kasparek
- Department of Psychiatry, University Hospital Brno and Faculty of Medicine, Masaryk University, Brno, Czechia
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Pape L, van Lith K, Veltman D, Cohn M, Marhe R, van den Brink W, Doreleijers T, Popma A. Effect of Methylphenidate on Resting-State Connectivity in Adolescents With a Disruptive Behavior Disorder: A Double-Blind Randomized Placebo-Controlled fMRI Study. Front Psychiatry 2021; 12:662652. [PMID: 34220576 PMCID: PMC8247590 DOI: 10.3389/fpsyt.2021.662652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 04/29/2021] [Indexed: 11/13/2022] Open
Abstract
Some studies suggest that methylphenidate (MPH) might be an effective treatment for antisocial and aggressive behavior in adolescence. However, little is known about the mechanism of action of MPH in adolescents with this kind of psychopathology. MPH is a dopamine and norepinephrine reuptake inhibitor and thus it is likely to affect dopaminergic mesocorticolimbic pathways. This is the first study to investigate the effect of MPH on resting-state connectivity of three mesolimbic seed regions with the rest of the brain in clinical referred male adolescents with a disruptive behavior disorder (DBD). Thirty-six male DBD adolescents and 31 male healthy controls (HCs) were included. DBD subjects were randomly allocated to a single dose of MPH (DBD-MPH, n = 20) or placebo (DBD-PCB, n = 16). Seed-based resting-state functional connectivity of the nucleus accumbens (NAcc), amygdala, and ventral tegmental area (VTA) with the rest of the brain was compared between groups. The NAcc seed showed increased connectivity in DBD-PCB compared to HC with the occipital cortex, posterior cingulate cortex (PCC), precuneus, and inferior parietal lobule (IPL) and increased connectivity in DBD-PCB compared to DBD-MPH with occipital cortex, IPL, and medial frontal gyrus. The amygdala seed showed increased connectivity in DBD-PCB compared to HC with the precuneus and PCC. The VTA seed showed increased connectivity in the DBD-MPH compared to the DBD-PCB group with a cluster in the postcentral gyrus and a cluster in the supplementary motor cortex/superior frontal gyrus. Both NAcc and amygdala seeds showed no connectivity differences in the DBD-MPH compared to the HC group, indicating that MPH normalizes the increased functional connectivity of mesolimbic seed regions with areas involved in moral decision making, visual processing, and attention.
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Affiliation(s)
- Louise Pape
- Department of Child and Adolescent Psychiatry, Amsterdam University Medical Center (UMC), Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Koen van Lith
- Department of Child and Adolescent Psychiatry, Amsterdam University Medical Center (UMC), Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Dick Veltman
- Department of Psychiatry, Amsterdam University Medical Center (UMC), Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Moran Cohn
- Department of Child and Adolescent Psychiatry, Amsterdam University Medical Center (UMC), Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Reshmi Marhe
- Department of Child and Adolescent Psychiatry, Amsterdam University Medical Center (UMC), Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Wim van den Brink
- Amsterdam Institute for Addiction Research, Amsterdam University Medical Center (UMC), University of Amsterdam, Amsterdam, Netherlands
| | - Theo Doreleijers
- Department of Child and Adolescent Psychiatry, Amsterdam University Medical Center (UMC), Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Arne Popma
- Department of Child and Adolescent Psychiatry, Amsterdam University Medical Center (UMC), Vrije Universiteit Amsterdam, Amsterdam, Netherlands.,Institute for Criminal Law & Criminology, Leiden University, Leiden, Netherlands
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12
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McIlvain G, Clements RG, Magoon EM, Spielberg JM, Telzer EH, Johnson CL. Viscoelasticity of reward and control systems in adolescent risk taking. Neuroimage 2020; 215:116850. [PMID: 32298793 PMCID: PMC7292790 DOI: 10.1016/j.neuroimage.2020.116850] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 03/30/2020] [Accepted: 04/09/2020] [Indexed: 12/16/2022] Open
Abstract
Heightened risk-taking tendencies during adolescence have been hypothesized to be attributable to physiological differences of maturation in key brain regions. The socioemotional system (e.g., nucleus accumbens), which is instrumental in reward response, shows a relatively earlier development trajectory than the cognitive control system (e.g., medial prefrontal cortex), which regulates impulse response. This developmental imbalance between heightened reward seeking and immature cognitive control potentially makes adolescents more susceptible to engaging in risky activities. Here, we assess brain structure in the socioemotional and cognitive control systems through viscoelastic stiffness measured with magnetic resonance elastography (MRE) and volumetry, as well as risk-taking tendencies measured using two experimental tasks in 40 adolescents (mean age = 13.4 years old). MRE measures of regional brain stiffness reflect brain health and development via myelin content and glial matrix makeup, and have been shown to be highly sensitive to cognitive processes as compared to measures of regional brain volume and diffusion weighted imaging metrics. We find here that the viscoelastic and volumetric differences between the nucleus accumbens and the prefrontal cortex are correlated with increased risk-taking behavior in adolescents. These differences in development between the two brain systems can be used as an indicator of those adolescents who are more prone to real world risky activities and a useful measure for characterizing response to intervention.
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Affiliation(s)
- Grace McIlvain
- Department of Biomedical Engineering, University of Delaware, Newark, DE, USA
| | - Rebecca G Clements
- Department of Biomedical Engineering, University of Delaware, Newark, DE, USA
| | - Emily M Magoon
- Department of Biomedical Engineering, University of Delaware, Newark, DE, USA
| | - Jeffrey M Spielberg
- Department of Psychological and Brain Sciences, University of Delaware, Newark, DE, USA
| | - Eva H Telzer
- Department of Psychology and Neuroscience, University of North Carolina, Chapel Hill, NC, USA
| | - Curtis L Johnson
- Department of Biomedical Engineering, University of Delaware, Newark, DE, USA; Department of Psychological and Brain Sciences, University of Delaware, Newark, DE, USA.
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13
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Huo H, Zhang R, Seger CA, Feng T, Chen Q. The effect of trait anxiety on risk‐taking: Functional coupling between right hippocampus and left insula. Psychophysiology 2020; 57:e13629. [DOI: 10.1111/psyp.13629] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 05/07/2020] [Accepted: 05/26/2020] [Indexed: 01/14/2023]
Affiliation(s)
- Hangfeng Huo
- Key Laboratory of Brain, Cognition and Education Science (South China Normal University) Ministry of Education Guangzhou China
- School of Psychology South China Normal University Guangzhou China
- Center for Studies of Psychological Application South China Normal University Guangzhou China
- Guangdong Key Laboratory of Mental Health and Cognitive Science South China Normal University Guangdong China
| | - Rong Zhang
- Research Center of Psychology and Social Development, Faculty of Psychology Southwest University Chongqing China
| | - Carol A. Seger
- Key Laboratory of Brain, Cognition and Education Science (South China Normal University) Ministry of Education Guangzhou China
- School of Psychology South China Normal University Guangzhou China
- Center for Studies of Psychological Application South China Normal University Guangzhou China
- Guangdong Key Laboratory of Mental Health and Cognitive Science South China Normal University Guangdong China
- Department of Psychology and Program in Molecular, Cellular, and Integrative Neurosciences Colorado State University Fort Collins CO USA
| | - Tingyong Feng
- Research Center of Psychology and Social Development, Faculty of Psychology Southwest University Chongqing China
- Key Laboratory of Cognition and Personality Ministry of Education Chongqing China
| | - Qi Chen
- Key Laboratory of Brain, Cognition and Education Science (South China Normal University) Ministry of Education Guangzhou China
- School of Psychology South China Normal University Guangzhou China
- Center for Studies of Psychological Application South China Normal University Guangzhou China
- Guangdong Key Laboratory of Mental Health and Cognitive Science South China Normal University Guangdong China
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14
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Baltruschat S, Cándido A, Megías A, Maldonado A, Catena A. Risk proneness modulates the impact of impulsivity on brain functional connectivity. Hum Brain Mapp 2019; 41:943-951. [PMID: 31691415 PMCID: PMC7267946 DOI: 10.1002/hbm.24851] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 10/02/2019] [Accepted: 10/18/2019] [Indexed: 12/23/2022] Open
Abstract
Impulsivity and sensation seeking are considered to be among the most important personality traits involved in risk-taking behavior. This study is focused on whether the association of these personality traits and brain functional connectivity depends on individuals' risk proneness. Risk proneness was assessed with the DOSPERT-30 scale and corroborated with performance in a motorcycle simulator. The associations of impulsivity- and sensation seeking-related traits with the between and within coupling of seven major brain functional networks, estimated from electroencefalograma (EEG) recordings, differ according to whether an individual is risk prone or not. In risk-prone individuals, (lack of) premeditation enhanced the coupling of the ventral attention and limbic networks. At the same time, emotion seeking increased the coupling of the frontoparietal network and the default mode networks (DMNs). Finally, (lack of) perseverance had a positive impact on the coupling of anterior temporal nodes of the limbic network whilst having a negative impact on some frontal nodes of the frontoparietal network and the DMNs. In general, the results suggest that the predisposition to behave riskily modulates the way in which impulsivity traits are linked to brain functionality, seemingly making the brain networks prepare for an immediate, automatic, and maladaptive response.
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Affiliation(s)
- Sabina Baltruschat
- Mind, Brain and Behavior Research Center (CIMCYC), University of Granada, Granada, Spain
| | - Antonio Cándido
- Mind, Brain and Behavior Research Center (CIMCYC), University of Granada, Granada, Spain
| | - Alberto Megías
- Mind, Brain and Behavior Research Center (CIMCYC), University of Granada, Granada, Spain.,Department of Basic Psychology, University of Malaga, Malaga, Spain
| | - Antonio Maldonado
- Mind, Brain and Behavior Research Center (CIMCYC), University of Granada, Granada, Spain
| | - Andrés Catena
- Mind, Brain and Behavior Research Center (CIMCYC), University of Granada, Granada, Spain
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15
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Bajaj S, Killgore WDS. Sex differences in limbic network and risk-taking propensity in healthy individuals. J Neurosci Res 2019; 98:371-383. [PMID: 31373060 DOI: 10.1002/jnr.24504] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 06/19/2019] [Accepted: 07/15/2019] [Indexed: 01/26/2023]
Abstract
Little is known about the structural neural substrates that may contribute to sex differences in risk-taking propensity (RTP). A close association between risk-seeking behavior and the emotional-regulation network led us to hypothesize that the sex differences in RTP would be associated with sex differences in brain morphometry of the limbic network (LN). We collected RTP scores using the bubble sheet version of the evaluation of risk (EVAR) scale and neuroanatomical data from 57 healthy individuals (29 males). The EVAR scale included sub-scales measuring recklessness/impulsivity, self-confidence, and need for control (NFC). We observed significant sex differences in NFC showing greater desire for control and dominance in males than females (multivariate analysis of covariance, MANCOVAN: p = .01). Morphometry analysis showed that it was only the right LN, which showed significant sex differences in normalized surface area, normalized cortical volume, and adjusted mean curvature index (females > males) at p < .01 (MANCOVAN, corrected for multiple comparisons). Correlation analysis showed that greater curvature of the right LN was significantly associated with lower desire for control in high-risk events (r = -.31, p = .02 at 95% CI of [-0.53, -0.05]). Our findings suggest that the normalized cortical measures could indicate specific sex differences in brain morphometry, particularly within the LN. The curvature index was the only differentiating factor for greater/lower propensity for risk-taking behavior in overall sample. Therefore, the LN and the curvature measures could be key biomarkers, which play an important role in predicting risk-taking behavior.
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Affiliation(s)
- Sahil Bajaj
- Social, Cognitive and Affective Neuroscience Laboratory (SCAN Lab), Department of Psychiatry, College of Medicine, University of Arizona, Tucson, Arizona
| | - William D S Killgore
- Social, Cognitive and Affective Neuroscience Laboratory (SCAN Lab), Department of Psychiatry, College of Medicine, University of Arizona, Tucson, Arizona
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16
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Reyna VF, Helm RK, Weldon RB, Shah PD, Turpin AG, Govindgari S. Brain activation covaries with reported criminal behaviors when making risky choices: A fuzzy-trace theory approach. J Exp Psychol Gen 2019; 147:1094-1109. [PMID: 29975093 DOI: 10.1037/xge0000434] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Criminal behavior has been associated with abnormal neural activity when people experience risks and rewards or exercise inhibition. However, neural substrates of mental representations that underlie criminal and noncriminal risk-taking in adulthood have received scant attention. We take a new approach, applying fuzzy-trace theory, to examine neural substrates of risk preferences and criminality. We extend ideas about gist (simple meaning) and verbatim (precise risk-reward tradeoffs) representations used to explain adolescent risk-taking to uncover neural correlates of developmentally inappropriate adult risk-taking. We tested predictions using a risky-choice framing task completed in the MRI scanner, and examined neural covariation with self-reported criminal and noncriminal risk-taking. As predicted, risk-taking was correlated with a behavioral pattern of risk preferences called "reverse framing" (preferring sure losses over a risky option and a risky option over sure gains, the opposite of typical framing biases) that has been linked to risky behavior in adolescents and is rarely observed in nondisordered adults. Experimental manipulations confirmed processing interpretations of typical framing (gist-based) and reverse-framing (verbatim-based) risk preferences. In the brain, covariation with criminal and noncriminal risk-taking was observed predominantly when subjects made reverse-framing choices. Noncriminal risk-taking behavior was associated with emotional reactivity (amygdala) and reward motivation (striatal) areas, whereas criminal behavior was associated with greater activation in temporal and parietal cortices, their junction, and insula. When subjects made more developmentally typical framing choices, reflecting nonpreferred gist processing, activation in dorsolateral prefrontal cortex covaried with criminal risk-taking, which may reflect cognitive effort to process gist while inhibiting preferred verbatim processing. (PsycINFO Database Record
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17
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18
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Arefin TM, Mechling AE, Meirsman AC, Bienert T, Hübner NS, Lee HL, Ben Hamida S, Ehrlich A, Roquet D, Hennig J, von Elverfeldt D, Kieffer BL, Harsan LA. Remodeling of Sensorimotor Brain Connectivity in Gpr88-Deficient Mice. Brain Connect 2018; 7:526-540. [PMID: 28882062 DOI: 10.1089/brain.2017.0486] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Recent studies have demonstrated that orchestrated gene activity and expression support synchronous activity of brain networks. However, there is a paucity of information on the consequences of single gene function on overall brain functional organization and connectivity and how this translates at the behavioral level. In this study, we combined mouse mutagenesis with functional and structural magnetic resonance imaging (MRI) to determine whether targeted inactivation of a single gene would modify whole-brain connectivity in live animals. The targeted gene encodes GPR88 (G protein-coupled receptor 88), an orphan G protein-coupled receptor enriched in the striatum and previously linked to behavioral traits relevant to neuropsychiatric disorders. Connectivity analysis of Gpr88-deficient mice revealed extensive remodeling of intracortical and cortico-subcortical networks. Most prominent modifications were observed at the level of retrosplenial cortex connectivity, central to the default mode network (DMN) whose alteration is considered a hallmark of many psychiatric conditions. Next, somatosensory and motor cortical networks were most affected. These modifications directly relate to sensorimotor gating deficiency reported in mutant animals and also likely underlie their hyperactivity phenotype. Finally, we identified alterations within hippocampal and dorsal striatum functional connectivity, most relevant to a specific learning deficit that we previously reported in Gpr88-/- animals. In addition, amygdala connectivity with cortex and striatum was weakened, perhaps underlying the risk-taking behavior of these animals. This is the first evidence demonstrating that GPR88 activity shapes the mouse brain functional and structural connectome. The concordance between connectivity alterations and behavior deficits observed in Gpr88-deficient mice suggests a role for GPR88 in brain communication.
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Affiliation(s)
- Tanzil Mahmud Arefin
- 1 Department of Radiology, Medical Physics, Medical Center University of Freiburg, Faculty of Medicine, University of Freiburg , Freiburg, Germany .,2 Faculty of Biology, University of Freiburg , Freiburg, Germany .,3 Bernstein Center Freiburg, University of Freiburg , Freiburg, Germany .,4 Bernard and Irene Schwartz Center for Biomedical Imaging, Department of Radiology, New York University School of Medicine , New York, New York
| | - Anna E Mechling
- 1 Department of Radiology, Medical Physics, Medical Center University of Freiburg, Faculty of Medicine, University of Freiburg , Freiburg, Germany .,2 Faculty of Biology, University of Freiburg , Freiburg, Germany
| | - Aura Carole Meirsman
- 5 Département de Médecine Translationnelle et Neurogénétique, Institut de Génétique et de Biologie Moléculaire et Cellulaire, INSERM U-964, CNRS UMR-7104, Université de Strasbourg , Illkirch-Graffenstaden, France .,6 Neuroscience Paris Seine, Institut de Biologie Paris Seine , CNRS UMR 8246/INSERM U1130/Université Pierre et Marie Currie, Paris, France
| | - Thomas Bienert
- 1 Department of Radiology, Medical Physics, Medical Center University of Freiburg, Faculty of Medicine, University of Freiburg , Freiburg, Germany
| | - Neele Saskia Hübner
- 1 Department of Radiology, Medical Physics, Medical Center University of Freiburg, Faculty of Medicine, University of Freiburg , Freiburg, Germany .,2 Faculty of Biology, University of Freiburg , Freiburg, Germany
| | - Hsu-Lei Lee
- 1 Department of Radiology, Medical Physics, Medical Center University of Freiburg, Faculty of Medicine, University of Freiburg , Freiburg, Germany
| | - Sami Ben Hamida
- 5 Département de Médecine Translationnelle et Neurogénétique, Institut de Génétique et de Biologie Moléculaire et Cellulaire, INSERM U-964, CNRS UMR-7104, Université de Strasbourg , Illkirch-Graffenstaden, France .,7 Douglas Mental Health Institute, Department of Psychiatry, McGill University , Montreal, Quebec, Canada
| | - Aliza Ehrlich
- 5 Département de Médecine Translationnelle et Neurogénétique, Institut de Génétique et de Biologie Moléculaire et Cellulaire, INSERM U-964, CNRS UMR-7104, Université de Strasbourg , Illkirch-Graffenstaden, France .,7 Douglas Mental Health Institute, Department of Psychiatry, McGill University , Montreal, Quebec, Canada
| | - Dan Roquet
- 8 Engineering Science, Computer Science and Imaging Laboratory (ICube), Integrative Multimodal Imaging in Healthcare, University of Strasbourg-CNRS , Strasbourg, France
| | - Jürgen Hennig
- 1 Department of Radiology, Medical Physics, Medical Center University of Freiburg, Faculty of Medicine, University of Freiburg , Freiburg, Germany
| | - Dominik von Elverfeldt
- 1 Department of Radiology, Medical Physics, Medical Center University of Freiburg, Faculty of Medicine, University of Freiburg , Freiburg, Germany
| | - Brigitte Lina Kieffer
- 5 Département de Médecine Translationnelle et Neurogénétique, Institut de Génétique et de Biologie Moléculaire et Cellulaire, INSERM U-964, CNRS UMR-7104, Université de Strasbourg , Illkirch-Graffenstaden, France .,7 Douglas Mental Health Institute, Department of Psychiatry, McGill University , Montreal, Quebec, Canada
| | - Laura-Adela Harsan
- 1 Department of Radiology, Medical Physics, Medical Center University of Freiburg, Faculty of Medicine, University of Freiburg , Freiburg, Germany .,8 Engineering Science, Computer Science and Imaging Laboratory (ICube), Integrative Multimodal Imaging in Healthcare, University of Strasbourg-CNRS , Strasbourg, France .,9 Department of Biophysics and Nuclear Medicine, Faculty of Medicine, University Hospital Strasbourg , Strasbourg, France
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19
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Risk seeking for losses modulates the functional connectivity of the default mode and left frontoparietal networks in young males. COGNITIVE AFFECTIVE & BEHAVIORAL NEUROSCIENCE 2018; 18:536-549. [DOI: 10.3758/s13415-018-0586-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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20
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Sherman L, Steinberg L, Chein J. Connecting brain responsivity and real-world risk taking: Strengths and limitations of current methodological approaches. Dev Cogn Neurosci 2017; 33:27-41. [PMID: 28774477 PMCID: PMC5745301 DOI: 10.1016/j.dcn.2017.05.007] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 04/28/2017] [Accepted: 05/31/2017] [Indexed: 12/23/2022] Open
Abstract
In line with the goal of limiting health risk behaviors in adolescence, a growing literature investigates whether individual differences in functional brain responses can be related to vulnerability to engage in risky decision-making. We review this body of work, investigate when and in what way findings converge, and provide best practice recommendations. We identified 23 studies that examined individual differences in brain responsivity and adolescent risk taking. Findings varied widely in terms of the neural regions identified as relating to risky behavior. This heterogeneity is likely due to the abundance of approaches used to assess risk taking, and to the disparity of fMRI tasks. Indeed, brain-behavior correlations were typically found in regions showing a main effect of task. However, results from a test of publication bias suggested that region of interest approaches lacked evidential value. The findings suggest that neural factors differentiating riskier teens are not localized to a single region. Therefore, approaches that utilize data from the entire brain, particularly in predictive analyses, may yield more reliable and applicable results. We discuss several decision points that researchers should consider when designing a study, and emphasize the importance of precise research questions that move beyond a general desire to address adolescent risk taking.
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Affiliation(s)
- Lauren Sherman
- Department of Psychology, Temple University, United States.
| | | | - Jason Chein
- Department of Psychology, Temple University, United States
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21
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Peters S, Peper JS, Van Duijvenvoorde ACK, Braams BR, Crone EA. Amygdala-orbitofrontal connectivity predicts alcohol use two years later: a longitudinal neuroimaging study on alcohol use in adolescence. Dev Sci 2016; 20. [PMID: 27774764 DOI: 10.1111/desc.12448] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Accepted: 03/30/2016] [Indexed: 12/28/2022]
Abstract
This study tested the relation between cortical-subcortical functional connectivity and alcohol consumption in adolescents using an accelerated longitudinal design, as well as normative developmental patterns for these measures. Participants between ages 8 and 27 completed resting-state neuroimaging scans at two time points separated by two years (N = 274 at T1, N = 231 at T2). In addition, participants between ages 12 and 27 reported on recent and lifetime alcohol use (N = 193 at T1, N = 244 at T2). Resting-state connectivity analyses focused on amygdala-orbitofrontal connectivity given prior research linking reduced coupling between these regions to alcohol use. Mixed model analyses revealed that age had a cubic relationship with alcohol use, with little to no use in childhood, steep increases in adolescence and leveling off in adulthood. No age effects were found for amygdala-OFC connectivity. Prediction analyses showed that left amygdala-orbitofrontal connectivity at the first time point predicted recent and lifetime alcohol use two years later. There was no evidence for the reversed relation, suggesting that brain connectivity measures precede explorative risk-taking behavior in adolescence, possibly because decreased subcortical-frontal connectivity biases towards more explorative or risky behavior.
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Affiliation(s)
- Sabine Peters
- Department of Developmental and Educational Psychology, Leiden University, The Netherlands.,Leiden Institute for Brain and Cognition, The Netherlands
| | - Jiska S Peper
- Department of Developmental and Educational Psychology, Leiden University, The Netherlands.,Leiden Institute for Brain and Cognition, The Netherlands
| | - Anna C K Van Duijvenvoorde
- Department of Developmental and Educational Psychology, Leiden University, The Netherlands.,Leiden Institute for Brain and Cognition, The Netherlands
| | - Barbara R Braams
- Department of Developmental and Educational Psychology, Leiden University, The Netherlands.,Leiden Institute for Brain and Cognition, The Netherlands
| | - Eveline A Crone
- Department of Developmental and Educational Psychology, Leiden University, The Netherlands.,Leiden Institute for Brain and Cognition, The Netherlands
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22
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DeWitt SJ, Ketcherside A, McQueeny TM, Dunlop JP, Filbey FM. The hyper-sentient addict: an exteroception model of addiction. THE AMERICAN JOURNAL OF DRUG AND ALCOHOL ABUSE 2016; 41:374-81. [PMID: 26154169 DOI: 10.3109/00952990.2015.1049701] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND Exteroception involves processes related to the perception of environmental stimuli important for an organism's ability to adapt to its environment. As such, exteroception plays a critical role in conditioned response. In addiction, behavioral and neuroimaging studies show that the conditioned response to drug-related cues is often associated with alterations in brain regions including the precuneus/posterior cingulate cortex, an important node within the default mode network dedicated to processes such as self-monitoring. OBJECTIVE This review aimed to summarize the growing, but largely fragmented, literature that supports a central role of exteroceptive processes in addiction. METHODS We performed a systematic review of empirical research via PubMed and Google Scholar with keywords including 'addiction', 'exteroception', 'precuneus', and 'self-awareness', to identify human behavioral and neuroimaging studies that report mechanisms of self-awareness in healthy populations, and altered self-awareness processes, specifically exteroception, in addicted populations. RESULTS Results demonstrate that exteroceptive processes play a critical role in conditioned cue response in addiction and serve as targets for interventions such as mindfulness training. Further, a hub of the default mode network, namely, the precuneus, is (i) consistently implicated in exteroceptive processes, and (ii) widely demonstrated to have increased activation and connectivity in addicted populations. CONCLUSION Heightened exteroceptive processes may underlie cue-elicited craving, which in turn may lead to the maintenance and worsening of substance use disorders. An exteroception model of addiction provides a testable framework from which novel targets for interventions can be identified.
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Affiliation(s)
- Samuel J DeWitt
- a Center for BrainHealth, University of Texas at Dallas , Dallas , TX , USA
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23
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Suenderhauf C, Walter A, Lenz C, Lang UE, Borgwardt S. Counter striking psychosis: Commercial video games as potential treatment in schizophrenia? A systematic review of neuroimaging studies. Neurosci Biobehav Rev 2016; 68:20-36. [PMID: 27090742 DOI: 10.1016/j.neubiorev.2016.03.018] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Revised: 02/19/2016] [Accepted: 03/16/2016] [Indexed: 01/01/2023]
Abstract
Schizophrenia is a severe, chronic, and strongly disabling neuropsychiatric disorder, characterized by cognitive decline, positive and negative symptoms. Positive symptoms respond well to antipsychotic medication and psycho-social interventions, in contrast to negative symptoms and neurocognitive impairments. Cognitive deficits have been linked to a poorer outcome and hence specific cognitive remediation therapies have been proposed. Their effectiveness is nowadays approved and neurobiological correlates have been reconfirmed by brain imaging studies. Interestingly, recent MRI work showed that commercial video games modified similar brain areas as these specialized training programs. If gray matter increases and functional brain modulations would translate in better cognitive and every day functioning, commercial video game training could be an enjoyable and economically interesting treatment option for patients with neuropsychiatric disorders. This systematic review summarizes advances in the area with emphasis on imaging studies dealing with brain changes upon video game training and contrasts them to conventional cognitive remediation. Moreover, we discuss potential challenges therapeutic video game development and research would have to face in future treatment of schizophrenia.
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Affiliation(s)
- Claudia Suenderhauf
- Neuropsychiatry and Brain Imaging Group, Department of Psychiatry (UPK), Department of Clinical Research (DKF), Wilhelm Klein-Strasse 27, 4012 Basel, Switzerland.
| | - Anna Walter
- Neuropsychiatry and Brain Imaging Group, Department of Psychiatry (UPK), Department of Clinical Research (DKF), Wilhelm Klein-Strasse 27, 4012 Basel, Switzerland
| | - Claudia Lenz
- Neuropsychiatry and Brain Imaging Group, Department of Psychiatry (UPK), Department of Clinical Research (DKF), Wilhelm Klein-Strasse 27, 4012 Basel, Switzerland
| | - Undine E Lang
- Neuropsychiatry and Brain Imaging Group, Department of Psychiatry (UPK), Department of Clinical Research (DKF), Wilhelm Klein-Strasse 27, 4012 Basel, Switzerland
| | - Stefan Borgwardt
- Neuropsychiatry and Brain Imaging Group, Department of Psychiatry (UPK), Department of Clinical Research (DKF), Wilhelm Klein-Strasse 27, 4012 Basel, Switzerland
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Crone EA, van Duijvenvoorde ACK, Peper JS. Annual Research Review: Neural contributions to risk-taking in adolescence--developmental changes and individual differences. J Child Psychol Psychiatry 2016; 57:353-68. [PMID: 26889896 DOI: 10.1111/jcpp.12502] [Citation(s) in RCA: 102] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/17/2015] [Indexed: 11/28/2022]
Abstract
BACKGROUND Risk-taking, which involves voluntary choices for behaviors where outcomes remain uncertain, undergoes considerable developmental changes during childhood, adolescence, and early adulthood. In addition, risk-taking is thought to be a key element of many externalizing disorders, such as ADHD, delinquency, conduct disorder, and substance abuse. In this review, we will discuss the potential adaptive and nonadaptive properties of risk-taking in childhood and adolescence. FINDINGS We propose that the changes in brain architecture and function are a crucial element underlying these developmental trajectories. We first identify how subcortical and cortical interactions are important for understanding risk-taking behavior in adults. Next, we show how developmental changes in this network underlie changes in risk-taking behavior. Finally, we explore how these differences can be important for understanding externalizing behavioral disorders in childhood and adolescence. CONCLUSIONS We conclude that longitudinal studies are of crucial importance for understanding these developmental trajectories, and many of these studies are currently underway.
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Affiliation(s)
- Eveline A Crone
- Department of Developmental and Educational Psychology, Institute of Psychology, Leiden University, Leiden, The Netherlands.,Leiden Institute for Brain and Cognition, Leiden University, Leiden, The Netherlands
| | - Anna C K van Duijvenvoorde
- Department of Developmental and Educational Psychology, Institute of Psychology, Leiden University, Leiden, The Netherlands.,Leiden Institute for Brain and Cognition, Leiden University, Leiden, The Netherlands
| | - Jiska S Peper
- Department of Developmental and Educational Psychology, Institute of Psychology, Leiden University, Leiden, The Netherlands.,Leiden Institute for Brain and Cognition, Leiden University, Leiden, The Netherlands
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25
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Shulman EP, Smith AR, Silva K, Icenogle G, Duell N, Chein J, Steinberg L. The dual systems model: Review, reappraisal, and reaffirmation. Dev Cogn Neurosci 2016; 17:103-17. [PMID: 26774291 PMCID: PMC6990093 DOI: 10.1016/j.dcn.2015.12.010] [Citation(s) in RCA: 424] [Impact Index Per Article: 53.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 07/17/2015] [Accepted: 12/19/2015] [Indexed: 01/06/2023] Open
Abstract
According to the dual systems perspective, risk taking peaks during adolescence because activation of an early-maturing socioemotional-incentive processing system amplifies adolescents' affinity for exciting, pleasurable, and novel activities at a time when a still immature cognitive control system is not yet strong enough to consistently restrain potentially hazardous impulses. We review evidence from both the psychological and neuroimaging literatures that has emerged since 2008, when this perspective was originally articulated. Although there are occasional exceptions to the general trends, studies show that, as predicted, psychological and neural manifestations of reward sensitivity increase between childhood and adolescence, peak sometime during the late teen years, and decline thereafter, whereas psychological and neural reflections of better cognitive control increase gradually and linearly throughout adolescence and into the early 20s. While some forms of real-world risky behavior peak at a later age than predicted, this likely reflects differential opportunities for risk-taking in late adolescence and young adulthood, rather than neurobiological differences that make this age group more reckless. Although it is admittedly an oversimplification, as a heuristic device, the dual systems model provides a far more accurate account of adolescent risk taking than prior models that have attributed adolescent recklessness to cognitive deficiencies.
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Affiliation(s)
- Elizabeth P Shulman
- Brock University, Psychology Department, 1812 Sir Isaac Brock Way, St. Catharines, ON L2S 3A1, Canada.
| | - Ashley R Smith
- Temple University, Department of Psychology, 1701 N. 13th Street, Philadelphia, PA 19122, USA.
| | - Karol Silva
- Temple University, Department of Psychology, 1701 N. 13th Street, Philadelphia, PA 19122, USA.
| | - Grace Icenogle
- Temple University, Department of Psychology, 1701 N. 13th Street, Philadelphia, PA 19122, USA.
| | - Natasha Duell
- Temple University, Department of Psychology, 1701 N. 13th Street, Philadelphia, PA 19122, USA.
| | - Jason Chein
- Temple University, Department of Psychology, 1701 N. 13th Street, Philadelphia, PA 19122, USA.
| | - Laurence Steinberg
- Temple University, Department of Psychology, 1701 N. 13th Street, Philadelphia, PA 19122, USA; King Abdulaziz University, Abdullah Sulayman, Jeddah 22254, Saudi Arabia.
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Feldstein Ewing SW, Houck JM, Yezhuvath U, Shokri-Kojori E, Truitt D, Filbey FM. The impact of therapists' words on the adolescent brain: In the context of addiction treatment. Behav Brain Res 2015; 297:359-69. [PMID: 26455873 DOI: 10.1016/j.bbr.2015.09.041] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Revised: 09/09/2015] [Accepted: 09/28/2015] [Indexed: 11/26/2022]
Abstract
At this time, we still do not know how therapist behaviors influence adolescent brain response and related treatment outcomes. Therefore, we examined this question with 17 binge drinking youth (mean age=16.62 years; 64.3% female; 42.9% Hispanic; 28.6% bi-/multi-racial). In this within-subjects design, all youth completed a baseline assessment, two therapy sessions, an fMRI scan, and were re-evaluated for behavior change at one-month post-treatment. During the fMRI session, youth were presented with two types of responses from their treating therapist: higher-skill statements prescribed in an empirically-supported addiction treatment (complex reflections) vs. language standard within addiction treatment more broadly (closed questions). In terms of behavior change, at the one-month follow-up, youth showed significant reductions in number of drinking days and binge drinking days. Further, we found main effects for complex reflections and closed questions across the superior middle temporal gyrus and middle temporal gyrus (FWE-corrected, p<.05). Greater brain response was observed for complex reflections versus closed questions within the bilateral anterior cingulate gyrus. Greater BOLD response in the parietal lobe during closed questions was significantly associated with less post-treatment drinking. Lower BOLD response during complex reflections and closed questions in the precuneus were associated with greater post-treatment ratings of importance of changing. This study represents a first step in understanding how therapist behaviors influence the developing adolescent brain and how that neural response may be associated with youth treatment outcomes.
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Affiliation(s)
- Sarah W Feldstein Ewing
- Oregon Health & Science University, Department of Psychiatry, 3314 SW US Veteran's Hospital Road, M/C DC7P, Portland, OR 97239, USA.
| | - Jon M Houck
- University of New Mexico Department of Psychology and Center on Alcoholism, Substance Abuse, and Addictions (UNM CASAA), 2650 Yale Blvd SE, MSC11 6280, Albuquerque, NM 87106, USA.
| | - Uma Yezhuvath
- Advance MRI LLC, 8700 Stonebrook Parkway, #105, Frisco, TX 75034, USA.
| | | | - Dustin Truitt
- University of New Mexico Department of Psychology and Center on Alcoholism, Substance Abuse, and Addictions (UNM CASAA), 2650 Yale Blvd SE, MSC11 6280, Albuquerque, NM 87106, USA.
| | - Francesca M Filbey
- Center for BrainHealth, School of Behavioral and Brain Sciences, The University of Texas at Dallas, 2200 West Mockingbird Lane, Dallas, TX 75235, USA.
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Peters S, Jolles DJ, Van Duijvenvoorde ACK, Crone EA, Peper JS. The link between testosterone and amygdala-orbitofrontal cortex connectivity in adolescent alcohol use. Psychoneuroendocrinology 2015; 53:117-26. [PMID: 25618591 DOI: 10.1016/j.psyneuen.2015.01.004] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Revised: 01/07/2015] [Accepted: 01/07/2015] [Indexed: 01/14/2023]
Abstract
Alcohol consumption is one of the most problematic and widespread forms of risk taking in adolescence. It has been hypothesized that sex hormones such as testosterone play an important role in risk taking by influencing the development of brain networks involved in emotion and motivation, particularly the amygdala and its functional connections. Connectivity between the amygdala and the orbitofrontal cortex (OFC) may be specifically related to alcohol use, given the association of this tract with top-down control over behavioral approach tendencies. In line with this, prior studies in adults indicate a link between alcohol use and functional connectivity between the amygdala and the orbitofrontal cortex (OFC), as well as between testosterone and amygdala-OFC connectivity. We consolidated these research lines by investigating the association between alcohol use, testosterone and resting state functional brain connectivity within one large-scale adolescent sample (n=173, aged 12-25 years). Mediation analyses demonstrated an indirect effect of testosterone levels on alcohol use through amygdala-OFC intrinsic functional connectivity, but only in boys. That is, increased testosterone in boys was associated with reduced amygdala-OFC connectivity, which in turn was associated with increased alcohol intake. This study is the first to demonstrate the interplay between adolescent alcohol use, sex hormones and brain mechanisms, thus taking an important step to increase our understanding of the mechanisms behind this form of adolescent risk-taking.
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Affiliation(s)
- Sabine Peters
- Department of Developmental and Educational Psychology, Leiden University, Wassenaarseweg 52, 2333AK Leiden, The Netherlands; Leiden Institute for Brain and Cognition, Albinusdreef 2, 2333 ZA Leiden, The Netherlands.
| | - Dietsje J Jolles
- Department of Developmental and Educational Psychology, Leiden University, Wassenaarseweg 52, 2333AK Leiden, The Netherlands; Leiden Institute for Brain and Cognition, Albinusdreef 2, 2333 ZA Leiden, The Netherlands; Stanford Cognitive and Systems Neuroscience Laboratory, Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, 291 Campus Drive, Stanford, CA 94305, USA
| | - Anna C K Van Duijvenvoorde
- Department of Developmental and Educational Psychology, Leiden University, Wassenaarseweg 52, 2333AK Leiden, The Netherlands; Leiden Institute for Brain and Cognition, Albinusdreef 2, 2333 ZA Leiden, The Netherlands
| | - Eveline A Crone
- Department of Developmental and Educational Psychology, Leiden University, Wassenaarseweg 52, 2333AK Leiden, The Netherlands; Leiden Institute for Brain and Cognition, Albinusdreef 2, 2333 ZA Leiden, The Netherlands; Department of Developmental Psychology, University of Amsterdam, Weesperplein 4, 1018XA Amsterdam, The Netherlands
| | - Jiska S Peper
- Department of Developmental and Educational Psychology, Leiden University, Wassenaarseweg 52, 2333AK Leiden, The Netherlands; Leiden Institute for Brain and Cognition, Albinusdreef 2, 2333 ZA Leiden, The Netherlands
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Bates MLS, Emery MA, Wellman PJ, Eitan S. Social housing conditions influence morphine dependence and the extinction of morphine place preference in adolescent mice. Drug Alcohol Depend 2014; 142:283-9. [PMID: 25048393 DOI: 10.1016/j.drugalcdep.2014.06.036] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Revised: 05/25/2014] [Accepted: 06/27/2014] [Indexed: 01/15/2023]
Abstract
BACKGROUND Adolescent opioid abuse is on the rise, and current treatments are not effective in reducing rates of relapse. Our previous studies demonstrated that social housing conditions alter the acquisition rate of morphine conditioned place preference (CPP) in adolescent mice. Specifically, the acquisition rate of morphine CPP is slower in morphine-treated animals housed with drug-naïve animals. Thus, here we tested the effect of social housing conditions on the development of morphine dependence and the extinction rate of an acquired morphine CPP. METHODS Adolescent male mice were group-housed in one of two housing conditions. They were injected for 6 days (PND 28-33) with 20 mg/kg morphine. Morphine only mice are animals where all four mice in the cage received morphine. Morphine cage-mate mice are morphine-injected animals housed with drug-naïve animals. Mice were individually tested for spontaneous withdrawal signs by quantifying jumping behavior 4, 8, 24, and 48 h after the final morphine injection. Then, mice were conditioned to acquire morphine CPP and were tested for the rate of extinction. RESULTS Morphine cage-mates express less jumping behavior during morphine withdrawal as compared to morphine only mice. As expected, morphine cage-mate animals acquired morphine CPP more slowly than the morphine only animals. Additionally, morphine cage-mates extinguished morphine CPP more readily than morphine only mice. CONCLUSIONS Social housing conditions modulate morphine dependence and the extinction rate of morphine CPP. Extinction testing is relevant to human addiction because rehabilitations like extinction therapy may be used to aid human addicts in maintaining abstinence from drug use.
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Affiliation(s)
- M L Shawn Bates
- Behavioral and Cellular Neuroscience, Department of Psychology, Texas A&M University, 4235 TAMU, College Station, TX 77843, USA; Interdisciplinary Program in Neuroscience, Texas A&M Institute for Neuroscience (TAMIN), USA
| | - Michael A Emery
- Behavioral and Cellular Neuroscience, Department of Psychology, Texas A&M University, 4235 TAMU, College Station, TX 77843, USA; Interdisciplinary Program in Neuroscience, Texas A&M Institute for Neuroscience (TAMIN), USA
| | - Paul J Wellman
- Behavioral and Cellular Neuroscience, Department of Psychology, Texas A&M University, 4235 TAMU, College Station, TX 77843, USA; Interdisciplinary Program in Neuroscience, Texas A&M Institute for Neuroscience (TAMIN), USA
| | - Shoshana Eitan
- Behavioral and Cellular Neuroscience, Department of Psychology, Texas A&M University, 4235 TAMU, College Station, TX 77843, USA; Interdisciplinary Program in Neuroscience, Texas A&M Institute for Neuroscience (TAMIN), USA.
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