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Jacobs DS, Bogachuk AP, Moghaddam B. Orbitofrontal and Prelimbic Cortices Serve Complementary Roles in Adapting Reward Seeking to Learned Anxiety. Biol Psychiatry 2024:S0006-3223(24)01139-9. [PMID: 38460582 DOI: 10.1016/j.biopsych.2024.02.1015] [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: 08/10/2023] [Revised: 01/26/2024] [Accepted: 02/28/2024] [Indexed: 03/11/2024]
Abstract
BACKGROUND Anxiety is a common symptom of several mental health disorders and adversely affects motivated behaviors. Anxiety can emerge from associating risk of future harm while engaged in goal-guided actions. Using a recently developed behavioral paradigm to model this aspect of anxiety, we investigated the role of 2 cortical subregions, the prelimbic medial frontal cortex (PL) and lateral orbitofrontal cortex (lOFC), which have been implicated in anxiety and outcome expectation, in flexible representation of actions associated with harm risk. METHODS A seek-take reward-guided instrumental task design was used to train animals (N = 8) to associate the seek action with a variable risk of punishment. After learning, animals underwent extinction training for this association. Fiber photometry was used to measure and compare neuronal activity in the PL and lOFC during learning and extinction. RESULTS Animals increased action suppression in response to punishment contingencies. This increase dissipated after extinction training. These behavioral changes were associated with region-specific changes in neuronal activity. PL neuronal activity preferentially adapted to the threat of punishment, whereas lOFC activity adapted to safe aspects of the task. Moreover, correlated activity between these regions was suppressed during actions associated with harm risk, suggesting that these regions may guide behavior independently under anxiety. CONCLUSIONS These findings suggest that the PL and lOFC serve distinct but complementary roles in the representation of learned anxiety. This dissociation may provide a mechanism to explain how overlapping cortical systems are implicated in reward-guided action execution during anxiety.
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Affiliation(s)
- David S Jacobs
- Department of Behavioral Neuroscience, Oregon Health and Science University, Portland, Oregon
| | - Alina P Bogachuk
- Department of Behavioral Neuroscience, Oregon Health and Science University, Portland, Oregon
| | - Bita Moghaddam
- Department of Psychiatry, Oregon Health and Science University, Portland, Oregon; Department of Behavioral Neuroscience, Oregon Health and Science University, Portland, Oregon.
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2
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Cardoner N, Andero R, Cano M, Marin-Blasco I, Porta-Casteràs D, Serra-Blasco M, Via E, Vicent-Gil M, Portella MJ. Impact of Stress on Brain Morphology: Insights into Structural Biomarkers of Stress-related Disorders. Curr Neuropharmacol 2024; 22:935-962. [PMID: 37403395 PMCID: PMC10845094 DOI: 10.2174/1570159x21666230703091435] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 01/04/2023] [Accepted: 01/23/2023] [Indexed: 07/06/2023] Open
Abstract
Exposure to acute and chronic stress has a broad range of structural effects on the brain. The brain areas commonly targeted in the stress response models include the hippocampus, the amygdala, and the prefrontal cortex. Studies in patients suffering from the so-called stress-related disorders -embracing post-traumatic stress, major depressive and anxiety disorders- have fairly replicated animal models of stress response -particularly the neuroendocrine and the inflammatory models- by finding alterations in different brain areas, even in the early neurodevelopment. Therefore, this narrative review aims to provide an overview of structural neuroimaging findings and to discuss how these studies have contributed to our knowledge of variability in response to stress and the ulterior development of stress-related disorders. There are a gross number of studies available but neuroimaging research of stress-related disorders as a single category is still in its infancy. Although the available studies point at particular brain circuitries involved in stress and emotion regulation, the pathophysiology of these abnormalities -involving genetics, epigenetics and molecular pathways-, their relation to intraindividual stress responses -including personality characteristics, self-perception of stress conditions…-, and their potential involvement as biomarkers in diagnosis, treatment prescription and prognosis are discussed.
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Affiliation(s)
- Narcís Cardoner
- Institut d'Investigació Biomèdica Sant Pau (IIB SANT PAU), Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
- Department of Psychiatry and Forensic Medicine, School of Medicine Bellaterra, Universitat Autònoma de Barcelona, Barcelona, Spain
- Centro de Investigación Biomédica En Red en Salud Mental (CIBERSAM), Instituto de Salud Carlos III, Madrid, Spain
- Unitat de Neurociència Traslacional, Parc Taulí Hospital Universitari, Institut d'Investigació i Innovació Parc Taulí (I3PT), Institut de Neurociències, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain
| | - Raül Andero
- Centro de Investigación Biomédica En Red en Salud Mental (CIBERSAM), Instituto de Salud Carlos III, Madrid, Spain
- Unitat de Neurociència Traslacional, Parc Taulí Hospital Universitari, Institut d'Investigació i Innovació Parc Taulí (I3PT), Institut de Neurociències, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain
- Institut de Neurociències, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Barcelona, Spain
- Departament de Psicobiologia i de Metodologia de les Ciències de la Salut, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Barcelona, Spain
- ICREA, Barcelona, Spain
| | - Marta Cano
- Institut d'Investigació Biomèdica Sant Pau (IIB SANT PAU), Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
- Centro de Investigación Biomédica En Red en Salud Mental (CIBERSAM), Instituto de Salud Carlos III, Madrid, Spain
| | - Ignacio Marin-Blasco
- Institut de Neurociències, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Barcelona, Spain
| | - Daniel Porta-Casteràs
- Institut d'Investigació Biomèdica Sant Pau (IIB SANT PAU), Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
- Department of Psychiatry and Forensic Medicine, School of Medicine Bellaterra, Universitat Autònoma de Barcelona, Barcelona, Spain
- Unitat de Neurociència Traslacional, Parc Taulí Hospital Universitari, Institut d'Investigació i Innovació Parc Taulí (I3PT), Institut de Neurociències, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain
| | - Maria Serra-Blasco
- Centro de Investigación Biomédica En Red en Salud Mental (CIBERSAM), Instituto de Salud Carlos III, Madrid, Spain
- Programa eHealth ICOnnecta't, Institut Català d'Oncologia, Barcelona, Spain
| | - Esther Via
- Child and Adolescent Psychiatry and Psychology Department, Hospital Sant Joan de Déu, Barcelona, Spain
- Child and Adolescent Mental Health Research Group, Institut de Recerca Sant Joan de Déu, Barcelona, Spain
| | - Muriel Vicent-Gil
- Institut d'Investigació Biomèdica Sant Pau (IIB SANT PAU), Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - Maria J. Portella
- Institut d'Investigació Biomèdica Sant Pau (IIB SANT PAU), Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
- Department of Psychiatry and Forensic Medicine, School of Medicine Bellaterra, Universitat Autònoma de Barcelona, Barcelona, Spain
- Centro de Investigación Biomédica En Red en Salud Mental (CIBERSAM), Instituto de Salud Carlos III, Madrid, Spain
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Murphy ZD, Mulugeta R, Tran A, Ferguson SM. DREADD activation of the lateral orbitofrontal increases cocaine-taking and cocaine-seeking in male and female rats during intermittent access self-administration under risky conditions. ADDICTION NEUROSCIENCE 2023; 8:100122. [PMID: 37637005 PMCID: PMC10455039 DOI: 10.1016/j.addicn.2023.100122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/29/2023]
Abstract
Addiction is a disorder that can be characterized in part as the constant pursuit of a particular substance despite negative consequences. Although the orbitofrontal cortex (OFC) is known to regulate risk-taking more generally and be critical to the development of addiction, its role in regulating drug use under risk-taking conditions is unknown. To address this, we examined drug-taking and drug-seeking in male and female rats under conditions where cocaine infusions were paired with foot shock punishment 50% of the time and combined this paradigm with cFos immunohistochemistry. We found that rats that showed higher levels of drug-taking and drug-seeking prior to punishment showed decreased responding during self-administration sessions under risky conditions and lower levels of c-Fos expression in the lateral but not medial OFC. However, despite these initial differences in responses to infusions paired with foot shocks, all rats showed decreased responding with additional punishment sessions. We then used chemogenetic viral approaches to examine how altering activity of the lateral OFC affects drug-taking and drug-seeking during punished drug use. Although there was no effect of Gi/o DREADD-mediated inhibition of the lateral OFC on these behaviors, Gq DREADD-mediated activation increased drug-taking and drug-seeking when drug use was associated with foot shock 50% of the time. Interestingly, this manipulation had no effect on non-risky self-administration behavior. These results suggest that the involvement of lateral OFC in cocaine use is context-sensitive and influences decision-making based on negative outcomes.
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Affiliation(s)
- Zackari D. Murphy
- Graduate Program in Molecular and Cellular Biology, University of Washington, Seattle, WA 98195
- Center for Integrative Brain Research, Seattle Children’s Research Institute, Seattle, WA 98101
| | - Ruth Mulugeta
- Center for Integrative Brain Research, Seattle Children’s Research Institute, Seattle, WA 98101
| | - Alex Tran
- Center for Integrative Brain Research, Seattle Children’s Research Institute, Seattle, WA 98101
| | - Susan M. Ferguson
- Graduate Program in Molecular and Cellular Biology, University of Washington, Seattle, WA 98195
- Department of Psychiatry & Behavioral Sciences, University of Washington, Seattle, WA 98195
- Center for Integrative Brain Research, Seattle Children’s Research Institute, Seattle, WA 98101
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Tai APL, Leung MK, Geng X, Lau WKW. Conceptualizing psychological resilience through resting-state functional MRI in a mentally healthy population: a systematic review. Front Behav Neurosci 2023; 17:1175064. [PMID: 37538200 PMCID: PMC10394620 DOI: 10.3389/fnbeh.2023.1175064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 07/03/2023] [Indexed: 08/05/2023] Open
Abstract
Conceptualizations and operational definitions of psychological resilience vary across resilience neuroimaging studies. Data on the neural features of resilience among healthy individuals has been scarce. Furthermore, findings from resting-state functional magnetic resonance imaging (fMRI) studies were inconsistent across studies. This systematic review summarized resting-state fMRI findings in different modalities from various operationally defined resilience in a mentally healthy population. The PubMed and MEDLINE databases were searched. Articles that focused on resting-state fMRI in relation to resilience, and published before 2022, were targeted. Orbitofrontal cortex, anterior cingulate cortex, insula and amygdala, were reported the most from the 19 included studies. Regions in emotional network was reported the most from the included studies. The involvement of regions like amygdala and orbitofrontal cortex indicated the relationships between emotional processing and resilience. No common brain regions or neural pathways were identified across studies. The emotional network appears to be studied the most in association with resilience. Matching fMRI modalities and operational definitions of resilience across studies are essential for meta-analysis.
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Affiliation(s)
- Alan P. L. Tai
- Department of Special Education and Counselling, The Education University of Hong Kong, Hong Kong, Hong Kong SAR, China
- Integrated Centre for Wellbeing, The Education University of Hong Kong, Hong Kong, Hong Kong SAR, China
- Bioanalytical Laboratory for Educational Sciences, The Education University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Mei-Kei Leung
- Department of Counselling and Psychology, Hong Kong Shue Yan University, Hong Kong, Hong Kong SAR, China
| | - Xiujuan Geng
- Brain and Mind Institute, The Chinese University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Way K. W. Lau
- Department of Health Sciences, The Hong Kong Metropolitan University, Hong Kong, Hong Kong SAR, China
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Potegal M, Nordman JC. Non-angry aggressive arousal and angriffsberietschaft: A narrative review of the phenomenology and physiology of proactive/offensive aggression motivation and escalation in people and other animals. Neurosci Biobehav Rev 2023; 147:105110. [PMID: 36822384 DOI: 10.1016/j.neubiorev.2023.105110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 02/14/2023] [Accepted: 02/18/2023] [Indexed: 02/23/2023]
Abstract
Human aggression typologies largely correspond with those for other animals. While there may be no non-human equivalent of angry reactive aggression, we propose that human proactive aggression is similar to offense in other animals' dominance contests for territory or social status. Like predation/hunting, but unlike defense, offense and proactive aggression are positively reinforcing, involving dopamine release in accumbens. The drive these motivational states provide must suffice to overcome fear associated with initiating risky fights. We term the neural activity motivating proactive aggression "non-angry aggressive arousal", but use "angriffsberietschaft" for offense motivation in other animals to acknowledge possible differences. Temporal variation in angriffsberietschaft partitions fights into bouts; engendering reduced anti-predator vigilance, redirected aggression and motivational over-ride. Increased aggressive arousal drives threat-to-attack transitions, as in verbal-to-physical escalation and beyond that, into hyper-aggression. Proactive aggression and offense involve related neural activity states. Cingulate, insular and prefrontal cortices energize/modulate aggression through a subcortical core containing subnuclei for each aggression type. These proposals will deepen understanding of aggression across taxa, guiding prevention/intervention for human violence.
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Affiliation(s)
| | - Jacob C Nordman
- Department of Physiology, Southern Illinois University School of Medicine, Carbondale, IL, USA.
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Abstract
The Entangled Brain (Pessoa, L., 2002. MIT Press) promotes the idea that we need to understand the brain as a complex, entangled system. Why does the complex systems perspective, one that entails emergent properties, matter for brain science? In fact, many neuroscientists consider these ideas a distraction. We discuss three principles of brain organization that inform the question of the interactional complexity of the brain: (1) massive combinatorial anatomical connectivity; (2) highly distributed functional coordination; and (3) networks/circuits as functional units. To motivate the challenges of mapping structure and function, we discuss neural circuits illustrating the high anatomical and functional interactional complexity typical in the brain. We discuss potential avenues for testing for network-level properties, including those relying on distributed computations across multiple regions. We discuss implications for brain science, including the need to characterize decentralized and heterarchical anatomical-functional organization. The view advocated has important implications for causation, too, because traditional accounts of causality provide poor candidates for explanation in interactionally complex systems like the brain given the distributed, mutual, and reciprocal nature of the interactions. Ultimately, to make progress understanding how the brain supports complex mental functions, we need to dissolve boundaries within the brain-those suggested to be associated with perception, cognition, action, emotion, motivation-as well as outside the brain, as we bring down the walls between biology, psychology, mathematics, computer science, philosophy, and so on.
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7
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Jiang M, Zhang P, Yang X, Yu A, Zhang J, Xu X, Li Z. Altered White Matter Network Topology in Panic Disorder. J Pers Med 2023; 13:jpm13020227. [PMID: 36836461 PMCID: PMC9964494 DOI: 10.3390/jpm13020227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 01/20/2023] [Accepted: 01/23/2023] [Indexed: 01/31/2023] Open
Abstract
Panic disorder (PD) is an anxiety disorder that impairs life quality and social function and is associated with distributed brain regions. However, the alteration of the structural network remains unclear in PD patients. This study explored the specific characteristics of the structural brain network in patients with PD by graph theory analysis of diffusion tensor images (DTI). A total of 81 PD patients and 48 matched healthy controls were recruited for this study. The structural networks were constructed, and the network topological properties for individuals were estimated. At the global level, the network efficiency was higher, while the shortest path length and clustering coefficient were lower in the PD group compared to the healthy control (HC) group. At the nodal level, the PD group showed a widespread higher nodal efficiency and lower average shortest path length in the prefrontal, sensorimotor, limbic, insula, and cerebellum regions. Overall, the current results showed that the alteration of information processing in the fear network might play a role in the pathophysiology of PD.
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Affiliation(s)
- Molin Jiang
- Department of Psychosomatic Medicine, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing 100010, China
- The National Clinical Research Center for Mental Disorders, Beijing Key Laboratory of Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing 100088, China
| | - Ping Zhang
- The National Clinical Research Center for Mental Disorders, Beijing Key Laboratory of Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing 100088, China
| | - Xiangyun Yang
- The National Clinical Research Center for Mental Disorders, Beijing Key Laboratory of Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing 100088, China
| | - Aihong Yu
- The National Clinical Research Center for Mental Disorders, Beijing Key Laboratory of Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing 100088, China
| | - Jie Zhang
- Department of Psychosomatic Medicine, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing 100010, China
| | - Xiaoyu Xu
- Chinese Institute for Brain Research, Beijing 102206, China
- Correspondence: (X.X.); (Z.L.)
| | - Zhanjiang Li
- The National Clinical Research Center for Mental Disorders, Beijing Key Laboratory of Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing 100088, China
- Correspondence: (X.X.); (Z.L.)
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8
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Neural responding during uncertain threat anticipation in pediatric anxiety. Int J Psychophysiol 2023; 183:159-170. [PMID: 35985508 DOI: 10.1016/j.ijpsycho.2022.07.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Revised: 06/21/2022] [Accepted: 07/18/2022] [Indexed: 01/04/2023]
Abstract
Excessive fear responses to uncertain threat are a key feature of anxiety disorders (ADs), though most mechanistic work considers adults. As ADs onset in childhood and confer risk for later psychopathology, we sought to identify conditions of uncertain threat that distinguish 8-17-year-old youth with AD (n = 19) from those without AD (n = 33), and assess test-retest reliability of such responses in a companion sample of healthy adults across three sites (n = 19). In an adapted uncertainty of threat paradigm, visual cues parametrically signaled threat of aversive stimuli (fear faces) in 25 % increments (0 %, 25 %, 50 %, 100 %), while participants underwent functional magnetic resonance imaging (fMRI). We compared neural response elicited by cues signaling different degrees of probability regarding the subsequent delivery of fear faces. Overall, youth displayed greater engagement of bilateral inferior parietal cortex, fusiform gyrus, and lingual gyrus during uncertain threat anticipation in general. Relative to healthy youth, AD youth exhibited greater activation in ventrolateral prefrontal cortex (vlPFC)/BA47 during uncertain threat anticipation in general. Further, AD differed from healthy youth in scaling of ventral striatum/sgACC activation with threat probability and attenuated flexibility of responding during parametric uncertain threat. Complementing these results, significant, albeit modest, cross-site test-retest reliability in these regions was observed in an independent sample of healthy adults. While preliminary due to a small sample size, these findings suggest that during uncertainty of threat, AD youth engage vlPFC regions known to be involved in fear regulation, response inhibition, and cognitive control. Findings highlight the potential of isolating neural correlates of threat anticipation to guide treatment development and translational work in youth.
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Kenwood MM, Oler JA, Tromp DPM, Fox AS, Riedel MK, Roseboom PH, Brunner KG, Aggarwal N, Murray EA, Kalin NH. Prefrontal influences on the function of the neural circuitry underlying anxious temperament in primates. OXFORD OPEN NEUROSCIENCE 2022; 2:kvac016. [PMID: 37583705 PMCID: PMC10426770 DOI: 10.1093/oons/kvac016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 08/17/2023]
Abstract
Anxious temperament, characterized by heightened behavioral and physiological reactivity to potential threat, is an early childhood risk factor for the later development of stress-related psychopathology. Using a well-validated nonhuman primate model, we tested the hypothesis that the prefrontal cortex (PFC) is critical in regulating the expression of primate anxiety-like behavior, as well as the function of subcortical components of the anxiety-related neural circuit. We performed aspiration lesions of a narrow 'strip' of the posterior orbitofrontal cortex (OFC) intended to disrupt both cortex and axons entering, exiting and coursing through the pOFC, particularly those of the uncinate fasciculus (UF), a white matter tract that courses adjacent to and through this region. The OFC is of particular interest as a potential regulatory region because of its extensive reciprocal connections with amygdala, other subcortical structures and other frontal lobe regions. We validated this lesion method by demonstrating marked lesion-induced decreases in the microstructural integrity of the UF, which contains most of the fibers that connect the ventral PFC with temporal lobe structures as well as with other frontal regions. While the lesions resulted in modest decreases in threat-related behavior, they substantially decreased metabolism in components of the circuit underlying threat processing. These findings provide evidence for the importance of structural connectivity between the PFC and key subcortical structures in regulating the functions of brain regions known to be involved in the adaptive and maladaptive expression of anxiety.
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Affiliation(s)
| | | | | | | | | | | | - Kevin G Brunner
- Wisconsin National Primate Research Center, Univ. of Wisconsin, Madison, WI
| | | | - Elisabeth A Murray
- Section on the Neurobiology of Learning and Memory, Laboratory of Neuropsychology, NIMH, Bethesda, MD
| | - Ned H Kalin
- Psychiatry, Univ. of Wisconsin, Madison, WI
- Wisconsin National Primate Research Center, Univ. of Wisconsin, Madison, WI
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Elderly Caregiving Quality Improvement: A Pilot Study of the Burdens of Vietnamese Caregivers in Taiwan. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19106293. [PMID: 35627833 PMCID: PMC9140832 DOI: 10.3390/ijerph19106293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 05/14/2022] [Accepted: 05/20/2022] [Indexed: 12/04/2022]
Abstract
Taiwan is expected to reach super-aged status by 2026, leading to an increased demand for elderly caregiving services. Low local unemployment and a dwindling working-age population mean the island’s care system relies heavily on female foreign domestic workers (FDWs) from Southeast Asian neighbors such as Vietnam to satisfy labor shortages. Although suggested by anecdotal evidence, limited research has been conducted on the link between the shortfall in FDW qualifications, training, preparedness, and expertise and their employment stressors. Therefore, this study aims to assist FDWs by evaluating their stressors and helping them better understand health care delivery by (1) administering the Modified Caregiver Strain Index (MCSI) revised 2003 questionnaire, (2) performing semi-structured in-depth one-on-one interviews, (3) classifying interview results according to thematic analysis, and (4) using these themes to devise and deliver a 12-week multilingual health education teach-back program. Our results indicate that Vietnamese FDWs face specific challenges, including language barriers, homesickness, intensive physical and psychological work demands, stress adaptation, and occupational exposures. Despite yielding no significant improvements in caregiving strain, our intervention, conducted at the height of the COVID-19 pandemic, pinpoints and classifies areas of grave concern and proposes recommendations that can assist long-term care (LTC) stakeholders in understanding and overcoming their respective challenges, thereby improving the quality of elderly care.
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Hang Y, Zhong Y, Zhang G, Wu Z, Kong J, Wang Q, Ding H, Wu H, Yuan S, Wang C, Zhang N. Altered spontaneous neural activity in frontal and visual regions in patients with acrophobia. J Affect Disord 2022; 303:340-345. [PMID: 35151673 DOI: 10.1016/j.jad.2022.02.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 02/07/2022] [Accepted: 02/09/2022] [Indexed: 10/19/2022]
Abstract
BACKGROUND Acrophobia is a prevalent type of specific phobia, which frequently leads to functional impairments and occupational limitations. However, the neural pathology of acrophobia is still largely unknown. METHODS 26 acrophobic patients and 30 healthy controls were enrolled in this study. All participants underwent a resting-state fMRI scan. Severity of symptoms was evaluated using self-report and behavioral measures. The regional homogeneity (ReHo) and seed-based functional connectivity (FC) were then examined. RESULTS Compared to controls, acrophobic patients demonstrated higher ReHo in the right fusiform gyrus and lower ReHo in the bilateral superior frontal gyrus. Lower FC of right fusiform gyrus-bilateral caudate, right fusiform gyrus-right parahippocampal gyrus, and left medial superior frontal gyrus-left cuneus was also found in the acrophobia group. Additionally, there were negative correlations between behavior avoidance scores and FC of right fusiform gyrus- right parahippocampal gyrus (r = -0.42, p = 0.04) and between scores of the 7-item generalized anxiety disorder scale and FC of left medial superior frontal gyrus- left cuneus (r = -0.40, p = 0.049) in the acrophobia group. LIMITATIONS Owing to the cross-sectional design, it was unclear whether the functional abnormalities found in the acrophobic patients were related to state or trait effects. CONCLUSIONS Preliminary results indicated that acrophobic patients revealed abnormal brain function in orbitofrontal cortex, medial prefrontal cortex, and visual regions. These abnormalities may be helpful in understanding the possible neurobiological mechanism of acrophobia and may serve as potential intervention and prevention targets.
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Affiliation(s)
- Yaming Hang
- Nanjing Brain Hospital Affiliated to Nanjing Medical University, Nanjing, Jiangsu, 210029, China; School of Psychology, Nanjing Normal University, Nanjing, Jiangsu,210097, China
| | - Yuan Zhong
- School of Psychology, Nanjing Normal University, Nanjing, Jiangsu,210097, China
| | - Guojia Zhang
- Nanjing Brain Hospital Affiliated to Nanjing Medical University, Nanjing, Jiangsu, 210029, China; School of Psychology, Nanjing Normal University, Nanjing, Jiangsu,210097, China
| | - Zhou Wu
- School of Psychology, Nanjing Normal University, Nanjing, Jiangsu,210097, China
| | - Jingya Kong
- School of Psychology, Nanjing Normal University, Nanjing, Jiangsu,210097, China
| | - Qiuyu Wang
- School of Psychology, Nanjing Normal University, Nanjing, Jiangsu,210097, China
| | - Huachen Ding
- Nanjing Brain Hospital Affiliated to Nanjing Medical University, Nanjing, Jiangsu, 210029, China
| | - Huiqin Wu
- Nanjing Brain Hospital Affiliated to Nanjing Medical University, Nanjing, Jiangsu, 210029, China
| | - Shiting Yuan
- Nanjing Brain Hospital Affiliated to Nanjing Medical University, Nanjing, Jiangsu, 210029, China
| | - Chun Wang
- Nanjing Brain Hospital Affiliated to Nanjing Medical University, Nanjing, Jiangsu, 210029, China; School of Psychology, Nanjing Normal University, Nanjing, Jiangsu,210097, China; Cognitive Behavioral Therapy Institute of Nanjing Medical University, Nanjing, Jiangsu, 210029, China.
| | - Ning Zhang
- Nanjing Brain Hospital Affiliated to Nanjing Medical University, Nanjing, Jiangsu, 210029, China; Cognitive Behavioral Therapy Institute of Nanjing Medical University, Nanjing, Jiangsu, 210029, China
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Labrenz F, Spisák T, Ernst TM, Gomes CA, Quick HH, Axmacher N, Elsenbruch S, Timmann D. Temporal dynamics of fMRI signal changes during conditioned interoceptive pain-related fear and safety acquisition and extinction. Behav Brain Res 2022; 427:113868. [PMID: 35364111 DOI: 10.1016/j.bbr.2022.113868] [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: 10/19/2021] [Revised: 03/14/2022] [Accepted: 03/28/2022] [Indexed: 12/18/2022]
Abstract
Associative learning and memory mechanisms drive interoceptive signaling along the gut-brain axis, thus shaping affective-emotional reactions and behavior. Specifically, learning to predict potentially harmful, visceral pain is assumed to succeed within very few trials. However, the temporal dynamics of cerebellar and cerebral fMRI signal changes underlying early acquisition and extinction of learned fear signals and the concomitant evolvement of safety learning remain incompletely understood. 3T fMRI data of healthy individuals from three studies were uniformly processed across the whole brain and the cerebellum including an advanced normalizing method of the cerebellum. All studies employed differential delay conditioning (N=94) with one visual cue (CS+) being repeatedly paired with visceral pain as unconditioned stimulus (US) while a second cue remained unpaired (CS-). During subsequent extinction (N=51), all CS were presented without US. Behavioral results revealed increased CS+-aversiveness and CS--pleasantness after conditioning and diminished valence ratings for both CS following extinction. During early acquisition, the CS- induced linearly increasing neural activation in the insula, midcingulate cortex, hippocampus, precuneus as well as cerebral and cerebellar somatomotor regions. The comparison between acquisition and extinction phases yielded a CS--induced linear increase in the posterior cingulate cortex and precuneus during early acquisition, while there was no evidence for linear fMRI signal changes for the CS+ during acquisition and for both CS during extinction. Based on theoretical accounts of discrimination and temporal difference learning, these results suggest a gradual evolvement of learned safety cues that engage emotional arousal, memory, and cortical modulatory networks. As safety signals are presumably more difficult to learn and to discriminate from learned threat cues, the underlying temporal dynamics may reflect enhanced salience and prediction processing as well as increasing demands for attentional resources and the integration of multisensory information. Maladaptive responses to learned safety signals are a clinically relevant phenotype in multiple conditions, including chronic visceral pain, and can be exceptionally resistant to modification or extinction. Through sustained hypervigilance, safety seeking constitutes one key component in pain and stress-related avoidance behavior, calling for future studies targeting the mechanisms of safety learning and extinction to advance current cognitive-behavioral treatment approaches.
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Affiliation(s)
- Franziska Labrenz
- Department of Medical Psychology and Medical Sociology, Faculty of Medicine, Ruhr University Bochum, Bochum, Germany; Department of Neurology, Center for Translational Neuro- and Behavioral Sciences (C-TNBS), University Hospital Essen, University of Duisburg-Essen, Essen, Germany.
| | - Tamás Spisák
- Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Thomas M Ernst
- Department of Neurology, Center for Translational Neuro- and Behavioral Sciences (C-TNBS), University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Carlos A Gomes
- Department of Neuropsychology, Institute of Cognitive Neuroscience, Faculty of Psychology, Ruhr University Bochum, Bochum, Germany
| | - Harald H Quick
- High-Field and Hybrid Magnetic Resonance Imaging, University Hospital Essen, Essen, Germany; Erwin L. Hahn Institute for MR Imaging, University of Duisburg-Essen, Essen, Germany
| | - Nikolai Axmacher
- Department of Neuropsychology, Institute of Cognitive Neuroscience, Faculty of Psychology, Ruhr University Bochum, Bochum, Germany
| | - Sigrid Elsenbruch
- Department of Medical Psychology and Medical Sociology, Faculty of Medicine, Ruhr University Bochum, Bochum, Germany; Department of Neurology, Center for Translational Neuro- and Behavioral Sciences (C-TNBS), University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Dagmar Timmann
- Department of Neurology, Center for Translational Neuro- and Behavioral Sciences (C-TNBS), University Hospital Essen, University of Duisburg-Essen, Essen, Germany
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Evidence That Methylphenidate Treatment Evokes Anxiety-Like Behavior Through Glucose Hypometabolism and Disruption of the Orbitofrontal Cortex Metabolic Networks. Neurotox Res 2021; 39:1830-1845. [PMID: 34797528 DOI: 10.1007/s12640-021-00444-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 11/08/2021] [Accepted: 11/09/2021] [Indexed: 10/19/2022]
Abstract
Methylphenidate (MPH) has been widely misused by children and adolescents who do not meet all diagnostic criteria for attention-deficit/hyperactivity disorder without a consensus about the consequences. Here, we evaluate the effect of MPH treatment on glucose metabolism and metabolic network in the rat brain, as well as on performance in behavioral tests. Wistar male rats received intraperitoneal injections of MPH (2.0 mg/kg) or an equivalent volume of 0.9% saline solution (controls), once a day, from the 15th to the 44th postnatal day. Fluorodeoxyglucose-18 was used to investigate cerebral metabolism, and a cross-correlation matrix was used to examine the brain metabolic network in MPH-treated rats using micro-positron emission tomography imaging. Performance in the light-dark transition box, eating-related depression, and sucrose preference tests was also evaluated. While MPH provoked glucose hypermetabolism in the auditory, parietal, retrosplenial, somatosensory, and visual cortices, hypometabolism was identified in the left orbitofrontal cortex. MPH-treated rats show a brain metabolic network more efficient and connected, but careful analyses reveal that the MPH interrupts the communication of the orbitofrontal cortex with other brain areas. Anxiety-like behavior was also observed in MPH-treated rats. This study shows that glucose metabolism evaluated by micro-positron emission tomography in the brain can be affected by MPH in different ways according to the region of the brain studied. It may be related, at least in part, to a rewiring in the brain the metabolic network and behavioral changes observed, representing an important step in exploring the mechanisms and consequences of MPH treatment.
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14
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Icenhour A, Petrakova L, Hazzan N, Theysohn N, Merz CJ, Elsenbruch S. When gut feelings teach the brain to fear pain: Context-dependent activation of the central fear network in a novel interoceptive conditioning paradigm. Neuroimage 2021; 238:118229. [PMID: 34082119 DOI: 10.1016/j.neuroimage.2021.118229] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 04/16/2021] [Accepted: 05/31/2021] [Indexed: 11/18/2022] Open
Abstract
The relevance of contextual factors in shaping neural mechanisms underlying visceral pain-related fear learning remains elusive. However, benign interoceptive sensations, which shape patients' clinical reality, may context-dependently become conditioned predictors of impending visceral pain. In a novel context-dependent interoceptive conditioning paradigm, we elucidated the putative role of the central fear network in the acquisition and extinction of pain-related fear induced by interoceptive cues and pain-predictive contexts. In this fMRI study involving rectal distensions as a clinically-relevant model of visceroception, N = 27 healthy men and women underwent differential conditioning. During acquisition training, visceral sensations of low intensity as conditioned stimuli (CS) predicted visceral pain as unconditioned stimulus (US) in one context (Con+), or safety from pain in another context (Con-). During extinction training, interoceptive CS remained unpaired in both contexts, which were operationalized as images of different rooms presented in the MRI scanner. Successful contextual conditioning was supported by increased negative valence of Con+ compared to Con- after acquisition training, which resolved after extinction training. Although interoceptive CS were perceived as comparatively pleasant, they induced significantly greater neural activation of the amygdala, ventromedial PFC, and hippocampus when presented in Con+, while contexts alone did not elicit differential responses. During extinction training, a shift from CS to context differentiation was observed, with enhanced responses in the amygdala, ventromedial, and ventrolateral PFC to Con+ relative to Con-, whereas no CS-induced differential activation emerged. Context-dependent interoceptive conditioning can turn benign interoceptive cues into predictors of visceral pain that recruit key regions of the fear network. This first evidence expands knowledge about learning and memory mechanisms underlying interoceptive hypervigilance and maladaptive avoidance behavior, with implications for disorders of the gut-brain axis.
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Affiliation(s)
- Adriane Icenhour
- Department of Neurology, University Hospital Essen, Hufelandstr. 55, Essen 45147, Germany.
| | - Liubov Petrakova
- Department of Medical Psychology and Medical Sociology, Ruhr University Bochum, Universitaetsstr. 150, Bochum 44801 Germany
| | - Nelly Hazzan
- Department of Neurology, University Hospital Essen, Hufelandstr. 55, Essen 45147, Germany
| | - Nina Theysohn
- Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, University of Duisburg-Essen, Hufelandstr. 55, Essen 45147, Germany
| | - Christian J Merz
- Institute of Cognitive Neuroscience, Department of Cognitive Psychology, Ruhr University Bochum, Universitaetsstr. 150, Bochum 44801, Germany
| | - Sigrid Elsenbruch
- Department of Neurology, University Hospital Essen, Hufelandstr. 55, Essen 45147, Germany; Department of Medical Psychology and Medical Sociology, Ruhr University Bochum, Universitaetsstr. 150, Bochum 44801 Germany
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15
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Resting fMRI-guided TMS results in subcortical and brain network modulation indexed by interleaved TMS/fMRI. Exp Brain Res 2021; 239:1165-1178. [PMID: 33560448 DOI: 10.1007/s00221-021-06036-5] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 01/08/2021] [Indexed: 12/31/2022]
Abstract
Traditional non-invasive imaging methods describe statistical associations of functional co-activation over time. They cannot easily establish hierarchies in communication as done in non-human animals using invasive methods. Here, we interleaved functional MRI (fMRI) recordings with non-invasive transcranial magnetic stimulation (TMS) to map causal communication between the frontal cortex and subcortical target structures including the subgenual anterior cingulate cortex (sgACC) and the amygdala. Seed-based correlation maps from each participant's resting fMRI scan determined individual stimulation sites with high temporal correlation to targets for the subsequent TMS/fMRI session(s). The resulting TMS/fMRI images were transformed to quantile responses, so that regions of high-/low-quantile response corresponded to the areas of the brain with the most positive/negative evoked response relative to the global brain response. We then modeled the average quantile response for a given region (e.g., structure or network) to determine whether TMS was effective in the relative engagement of the downstream targets. Both the sgACC and amygdala were differentially influenced by TMS. Furthermore, we found that the sgACC distributed brain network was modulated in response to fMRI-guided TMS. The amygdala, but not its distributed network, also responded to TMS. Our findings suggest that individual targeting and brain response measurements reflect causal circuit mapping to the sgACC and amygdala in humans. These results set the stage to further map circuits in the brain and link circuit pathway integrity to clinical intervention outcomes, especially when the intervention targets specific pathways and networks as is possible with TMS.
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16
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Hsieh S, Yao ZF, Yang MH. Multimodal Imaging Analysis Reveals Frontal-Associated Networks in Relation to Individual Resilience Strength. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:1123. [PMID: 33513995 PMCID: PMC7908187 DOI: 10.3390/ijerph18031123] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 01/17/2021] [Accepted: 01/23/2021] [Indexed: 11/17/2022]
Abstract
Psychological resilience is regarded as a critical protective factor for preventing the development of mental illness from experienced adverse events. Personal strength is one key element of resilience that reflects an individual's reactions to negative life events and is crucial for successful adaptation. Previous studies have linked unimodal imaging measures with resilience. However, applying multimodal imaging measures could provide comprehensive organization information at the system level to examine whether an individual's resilience strength is reflected in the brain's structural and functional network. In this study, MRI was used to acquire multimodal imaging properties and subscales of personal strength in terms of resilience from 109 participants (48 females and 61 males). We employed a method of fusion independent component analysis to link the association between multimodal imaging components and personal strength of psychological resilience. The results reveal that a fusion component involving multimodal frontal networks in connecting with the parietal, occipital, and temporal regions is associated with the resilience score for personal strength. A multiple regression model further explains the predictive role of frontal-associated regions that cover a visual-related network regulating cognition and emotion to discern the perceived adverse experience. Overall, this study suggests that frontal-associated regions are related to individual resilience strength.
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Affiliation(s)
- Shulan Hsieh
- CASE Lab, Department of Psychology, National Cheng Kung University, No.1, University Road, Tainan 701, Taiwan;
- Institute of Allied Health Sciences, National Cheng Kung University, Tainan 701, Taiwan
- Department and Institute of Public Health, National Cheng Kung University, Tainan 701, Taiwan
| | - Zai-Fu Yao
- Brain and Cognition, Department of Psychology, University of Amsterdam, 1001 NK Amsterdam, The Netherlands;
| | - Meng-Heng Yang
- CASE Lab, Department of Psychology, National Cheng Kung University, No.1, University Road, Tainan 701, Taiwan;
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17
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Cisler JM, Herringa RJ. Posttraumatic Stress Disorder and the Developing Adolescent Brain. Biol Psychiatry 2021; 89:144-151. [PMID: 32709416 PMCID: PMC7725977 DOI: 10.1016/j.biopsych.2020.06.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 05/30/2020] [Accepted: 06/01/2020] [Indexed: 02/07/2023]
Abstract
Posttraumatic stress disorder (PTSD) in adolescents is common and debilitating. In contrast to adult PTSD, relatively little is known about the neurobiology of adolescent PTSD, nor about how current treatments may alter adolescent neurodevelopment to allow recovery from PTSD. Improving our understanding of biological mechanisms of adolescent PTSD, taken in the context of neurodevelopment, is crucial for developing novel and personalized treatment approaches. In this review, we highlight prevailing constructs of PTSD and current findings on these domains in adolescent PTSD. Notably, little data exist in adolescent PTSD for prominent adult PTSD constructs, including threat learning and attentional threat bias. Most work to date has examined general threat processing, emotion regulation, and their neural substrates. These studies suggest that adolescent PTSD, while phenomenologically similar to adult PTSD, shows unique neurodevelopmental substrates that may impair recovery but could also be targeted in the context of adolescent neuroplasticity to improve outcomes. Both cross-sectional and longitudinal data suggest abnormal frontolimbic development compared with typically developing youths, a pattern that may differ from resilient youths. Whether current treatments such as trauma-focused psychotherapy engage these targets and restore healthy neurodevelopment remains an open question. We end our review by highlighting emerging areas and knowledge gaps that could be addressed to better characterize the biology underlying adolescent PTSD. Emerging studies in computational modeling of decision making, caregiver-related transmission of traumatic stress, and other areas may offer new targets that could harness adolescent neurobehavioral plasticity to improve resilience and recovery for some of our most vulnerable youths.
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18
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Vasoactive intestinal polypeptide plasma levels associated with affective symptoms and brain structure and function in healthy females. Sci Rep 2021; 11:1406. [PMID: 33446759 PMCID: PMC7809454 DOI: 10.1038/s41598-020-80873-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 12/21/2020] [Indexed: 12/16/2022] Open
Abstract
Vasoactive intestinal polypeptide (VIP) is a neuroendocrine peptide distributed throughout the human body, including the CNS, where it is particularly abundant in brain regions associated with anxiety and depression. Based on earlier studies indicating that peripheral VIP may cross through the blood–brain barrier, we hypothesized plasma VIP levels to be associated with symptoms of anxiety and depression, as well as brain volume and resting-state functional connectivity in the amygdala, hippocampus, parahippocampus, and orbitofrontal cortex. Plasma VIP concentrations and anxiety/depression symptoms were measured in 37 healthy females. Functional and structural magnetic resonance imaging were used to evaluate functional connectivity and brain volume respectively, and their associations with VIP concentrations within brain regions associated with anxiety and depression. Negative correlations were found between VIP levels and symptoms of anxiety (r = − 0.44, p = 0.002) and depression (r = − 0.50, p = 0.001). Functional connectivity demonstrated significant VIP-dependent positive associations between the amygdala seed region with both the right parahippocampus (t(33) = 3.1, pFDR = 0.02) and right lateral orbitofrontal cortex (OFC; t(33) = 2.9, pFDR = 0.02). Moreover, VIP concentrations were significantly, positively correlated with brain volume in the left amygdala (r = 0.28, p = 0.007) and left lateral OFC (r = 0.29, p = 0.004). The present findings highlight a potential role for VIP in the neurobiology of affective symptoms.
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19
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Fonseca R, Madeira N, Simoes C. Resilience to fear: The role of individual factors in amygdala response to stressors. Mol Cell Neurosci 2020; 110:103582. [PMID: 33346000 DOI: 10.1016/j.mcn.2020.103582] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 11/13/2020] [Accepted: 12/02/2020] [Indexed: 10/22/2022] Open
Abstract
Resilience to stress is an adaptive process that varies individually. Resilience refers to the adaptation, or the ability to maintain or regain mental health, despite being subject to adverse situation. Resilience is a dynamic concept that reflects a combination of internal individual factors, including age and gender interacting with external factors such as social, cultural and environmental factors. In the last decade, we have witnessed an increase in the prevalence of anxiety disorders, including post-traumatic stress disorder. Given that stress in unavoidable, it is of great interest to understand the neurophysiological mechanisms of resilience, the individual factors that may contribute to susceptibility and promote efficacious approaches to improve resilience. Here, we address this complex question, attempting at defining clear and operational definitions that may allow us to improve our analysis of behavior incorporating individuality. We examine how individual perception of the stressor can alter the outcome of an adverse situation using as an example, the fear-conditioning paradigm and discuss how individual differences in the reward system can contribute to resilience. Given the central role of the endocannabinoid system in regulating fear responses and anxiety, we discuss the evidence that polymorphisms in several molecules of this signaling system contribute to different anxiety phenotypes. The endocannabinoid system is highly interconnected with the serotoninergic and dopaminergic modulatory systems, contributing to individual differences in stress perception and coping mechanisms. We review how the individual variability in these modulatory systems can be used towards a multivariable assessment of stress risk. Incorporating individuality in our research will allow us to define biomarkers of anxiety disorders as well as assess prognosis, towards a personalized clinical approach to mental health.
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Affiliation(s)
- Rosalina Fonseca
- Cellular and Systems Neurobiology, Chronic Diseases Research Center (CEDOC), NOVA Medical School, Universidade Nova de Lisboa, Campo dos Mártires da Pátria, 130 1169-056 Lisboa, Portugal.
| | - Natália Madeira
- Cellular and Systems Neurobiology, Chronic Diseases Research Center (CEDOC), NOVA Medical School, Universidade Nova de Lisboa, Campo dos Mártires da Pátria, 130 1169-056 Lisboa, Portugal
| | - Carla Simoes
- Cellular and Systems Neurobiology, Chronic Diseases Research Center (CEDOC), NOVA Medical School, Universidade Nova de Lisboa, Campo dos Mártires da Pátria, 130 1169-056 Lisboa, Portugal
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20
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Cléry JC, Hori Y, Schaeffer DJ, Gati JS, Pruszynski JA, Everling S. Whole brain mapping of somatosensory responses in awake marmosets investigated with ultra-high-field fMRI. J Neurophysiol 2020; 124:1900-1913. [PMID: 33112698 DOI: 10.1152/jn.00480.2020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
The common marmoset (Callithrix jacchus) is a small-bodied New World primate that is becoming an important model to study brain functions. Despite several studies exploring the somatosensory system of marmosets, all results have come from anesthetized animals using invasive techniques and postmortem analyses. Here, we demonstrate the feasibility for getting high-quality and reproducible somatosensory mapping in awake marmosets with functional magnetic resonance imaging (fMRI). We acquired fMRI sequences in four animals, while they received tactile stimulation (via air-puffs), delivered to the face, arm, or leg. We found a topographic body representation with the leg representation in the most medial part, the face representation in the most lateral part, and the arm representation between leg and face representation within areas 3a, 3b, and 1/2. A similar sequence from leg to face from caudal to rostral sites was identified in areas S2 and PV. By generating functional connectivity maps of seeds defined in the primary and second somatosensory regions, we identified two clusters of tactile representation within the posterior and midcingulate cortex. However, unlike humans and macaques, no clear somatotopic maps were observed. At the subcortical level, we found a somatotopic body representation in the thalamus and, for the first time in marmosets, in the putamen. These maps have similar organizations, as those previously found in Old World macaque monkeys and humans, suggesting that these subcortical somatotopic organizations were already established before Old and New World primates diverged. Our results show the first whole brain mapping of somatosensory responses acquired in a noninvasive way in awake marmosets.NEW & NOTEWORTHY We used somatosensory stimulation combined with functional MRI (fMRI) in awake marmosets to reveal the topographic body representation in areas S1, S2, thalamus, and putamen. We showed the existence of a body representation organization within the thalamus and the cingulate cortex by computing functional connectivity maps from seeds defined in S1/S2, using resting-state fMRI data. This noninvasive approach will be essential for chronic studies by guiding invasive recording and manipulation techniques.
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Affiliation(s)
- Justine C Cléry
- Centre for Functional and Metabolic Mapping, Robarts Research Institute, The University of Western Ontario, London, Ontario, Canada
| | - Yuki Hori
- Centre for Functional and Metabolic Mapping, Robarts Research Institute, The University of Western Ontario, London, Ontario, Canada
| | - David J Schaeffer
- Centre for Functional and Metabolic Mapping, Robarts Research Institute, The University of Western Ontario, London, Ontario, Canada
| | - Joseph S Gati
- Centre for Functional and Metabolic Mapping, Robarts Research Institute, The University of Western Ontario, London, Ontario, Canada.,Department of Medical Biophysics, The University of Western Ontario, London, Ontario, Canada
| | - J Andrew Pruszynski
- Centre for Functional and Metabolic Mapping, Robarts Research Institute, The University of Western Ontario, London, Ontario, Canada.,Department of Physiology and Pharmacology, The University of Western Ontario, London, Ontario, Canada
| | - Stefan Everling
- Centre for Functional and Metabolic Mapping, Robarts Research Institute, The University of Western Ontario, London, Ontario, Canada.,Department of Physiology and Pharmacology, The University of Western Ontario, London, Ontario, Canada
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21
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Green TA, Baracz SJ, Everett NA, Robinson KJ, Cornish JL. Differential effects of GABA A receptor activation in the prelimbic and orbitofrontal cortices on anxiety. Psychopharmacology (Berl) 2020; 237:3237-3247. [PMID: 32666257 DOI: 10.1007/s00213-020-05606-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 07/01/2020] [Indexed: 10/23/2022]
Abstract
RATIONALE The development of effective anxiety treatments has been hindered by limited understanding of the neurobiological mechanisms involved in anxiety regulation. Whilst gamma-aminobutyric acid (GABA) neurotransmission in the prefrontal cortex (PFC) is one mechanism consistently implicated in anxiety regulation, PFC subregions may contribute uniquely. OBJECTIVES The present study examined the effects of inactivating the PFC subregions of the prelimbic cortex (PrL) or orbitofrontal cortex (OFC) through GABAA receptor (GABAAR) activation, on anxiety behaviours in male Wistar rats. METHODS Sixty-six male Wistar rats were surgically implanted with bilateral cannulae into the PrL (n = 33) or the OFC (n = 33). Rats then received a microinjection of either the GABAA receptor agonist muscimol or vehicle prior to each experiment, conducted 1 week apart. Measures of anxiety were examined using the elevated plus maze (EPM) and the emergence test (ET). The effect on locomotor activity (baseline or methamphetamine-induced) was also tested. RESULTS Differential effects of brain region inactivation on anxiety-like behaviour were shown by measures in the EPM and ET; muscimol infused into the PrL-reduced anxiety-like behaviour, yet had no significant effect when infused into the OFC, compared with control treated rats. No effects on locomotor activity at baseline or following methamphetamine treatment were found. CONCLUSIONS This study highlights that activation of GABAARs specifically within the PrL, but not OFC, reduces anxiety behaviours in male rats. This suggests that activity of the PrL plays a more important role than the OFC in the neurobiological mechanisms of unconditioned anxiety and should be targeted for future therapies.
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Affiliation(s)
- Trudy A Green
- Department of Psychology, Macquarie University, Sydney, NSW, 2109, Australia
| | - Sarah J Baracz
- Department of Psychology, Macquarie University, Sydney, NSW, 2109, Australia.,Centre for Emotional Health, Macquarie University, Sydney, NSW, 2109, Australia
| | - Nick A Everett
- Department of Psychology, Macquarie University, Sydney, NSW, 2109, Australia
| | - Katherine J Robinson
- Department of Biomedical Sciences, Macquarie University, Sydney, NSW, 2109, Australia
| | - Jennifer L Cornish
- Department of Psychology, Macquarie University, Sydney, NSW, 2109, Australia. .,Centre for Emotional Health, Macquarie University, Sydney, NSW, 2109, Australia.
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22
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Murphy LE, Bachevalier J. Damage to Orbitofrontal Areas 12 and 13, but Not Area 14, Results in Blunted Attention and Arousal to Socioemotional Stimuli in Rhesus Macaques. Front Behav Neurosci 2020; 14:150. [PMID: 33093825 PMCID: PMC7506161 DOI: 10.3389/fnbeh.2020.00150] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 08/03/2020] [Indexed: 12/12/2022] Open
Abstract
An earlier study in monkeys indicated that lesions to the mid-portion of the ventral orbitofrontal cortex (OFC), including Walker’s areas 11 and 13 (OFC11/13), altered the spontaneous scanning of still pictures of primate faces (neutral and emotional) and the modulation of arousal. Yet, these conclusions were limited by several shortcomings, including the lesion approach, use of static rather than dynamic stimuli, and manual data analyses. To confirm and extend these earlier findings, we compared attention and arousal to social and nonsocial scenes in three groups of rhesus macaques with restricted lesions to one of three OFC areas (OFC12, OFC13, or OFC14) and a sham-operated control group using eye-tracking to capture scanning patterns, focal attention and pupil size. Animals with damage to the lateral OFC areas (OFC12 and OFC13) showed decreased attention specifically to the eyes of negative (threatening) social stimuli and increased arousal (increased pupil diameter) to positive social scenes. In contrast, animals with damage to the ventromedial OFC area (OFC14) displayed no differences in attention or arousal in the presence of social stimuli compared to controls. These findings support the notion that areas of the lateral OFC are critical for directing attention and modulating arousal to emotional social cues. Together with the existence of face-selective neurons in these lateral OFC areas, the data suggest that the lateral OFC may set the stage for multidimensional information processing related to faces and emotion and may be involved in social judgments.
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Affiliation(s)
- Lauren E Murphy
- Department of Psychology, Emory College of Arts and Sciences, Emory University, Atlanta, GA, United States
| | - Jocelyne Bachevalier
- Department of Psychology, Emory College of Arts and Sciences, Emory University, Atlanta, GA, United States.,Yerkes National Primate Research Center, Emory University, Atlanta, GA, United States
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23
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Trait Anxiety Mediated by Amygdala Serotonin Transporter in the Common Marmoset. J Neurosci 2020; 40:4739-4749. [PMID: 32393533 DOI: 10.1523/jneurosci.2930-19.2020] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 03/06/2020] [Accepted: 03/19/2020] [Indexed: 01/04/2023] Open
Abstract
High trait anxiety is associated with altered activity across emotion regulation circuitry and a higher risk of developing anxiety disorders and depression. This circuitry is extensively modulated by serotonin. Here, to understand why some people may be more vulnerable to developing affective disorders, we investigated whether serotonin-related gene expression across the brain's emotion regulation circuitry may underlie individual differences in trait anxiety using the common marmoset (Callithrix jacchus, mixed sexes) as a model. First, we assessed the association of region-specific expression of the serotonin transporter (SLC6A4) and serotonin receptor (HTR1A, HTR2A, HTR2C) genes with anxiety-like behavior; and second, we investigated their causal role in two key features of the high trait anxious phenotype: high responsivity to anxiety-provoking stimuli and an exaggerated conditioned threat response. While the expression of the serotonin receptors did not show a significant relationship with anxiety-like behavior in any of the targeted brain regions, serotonin transporter expression, specifically within the right ventrolateral prefrontal cortex (vlPFC) and most strongly in the right amygdala, was associated positively with anxiety-like behavior. The causal relationship between amygdala serotonin levels and an animal's sensitivity to threat was confirmed via direct amygdala infusions of a selective serotonin reuptake inhibitor (SSRI), citalopram. Both anxiety-like behaviors, and conditioned threat-induced responses were reduced by the blockade of serotonin reuptake in the amygdala. Together, these findings provide evidence that high amygdala serotonin transporter expression contributes to the high trait anxious phenotype and suggest that reduction of threat reactivity by SSRIs may be mediated by their actions in the amygdala.SIGNIFICANCE STATEMENT Findings here contribute to our understanding of how the serotonin system underlies an individual's expression of threat-elicited negative emotions such as anxiety and fear within nonhuman primates. Exploration of serotonergic gene expression across brain regions implicated in emotion regulation revealed that serotonin transporter gene expression in the ventrolateral prefrontal cortex (vlPFC) and most strongly in the amygdala, but none of the serotonin receptor genes, were predictive of interindividual differences in anxiety-like behavior. Targeting of amygdala serotonin reuptake with selective serotonin reuptake inhibitors (SSRIs) confirmed the causal relationship between amygdala serotonin transporter and an animal's sensitivity to threat by reversing expression of two key features of the high trait-like anxiety phenotype: high responsivity to anxiety-provoking uncertain threat and responsivity to certain conditioned threat.
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Why we need nonhuman primates to study the role of ventromedial prefrontal cortex in the regulation of threat- and reward-elicited responses. Proc Natl Acad Sci U S A 2019; 116:26297-26304. [PMID: 31871181 DOI: 10.1073/pnas.1902288116] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
The ventromedial prefrontal cortex (vmPFC) is consistently implicated in the cognitive and emotional symptoms of many psychiatric disorders, but the causal mechanisms of its involvement remain unknown. In part, this is because of the poor characterization of the disorders and their symptoms, and the focus of experimental studies in animals on subcortical (rather than cortical) dysregulation. Moreover, even in those experimental studies that have focused on the vmPFC, the preferred animal model for such research has been the rodent, in which there are marked differences in the organization of this region to that seen in humans, and thus the extent of functional homology is unclear. There is also a paucity of well-defined behavioral paradigms suitable for translating disorder-relevant findings across species. With these considerations in mind, we discuss the value of nonhuman primates (NHPs) in bridging the translational gap between human and rodent studies. We focus on recent investigations into the involvement in reward and threat processing of 2 major regions of the vmPFC, areas 25 and 32 in NHPs and their anatomical homologs, the infralimbic and prelimbic cortex, in rodents. We highlight potential similarities, but also differences between species, and consider them in light of the extent to which anatomical homology reflects functional homology, the expansion of the PFC in human and NHPs, and most importantly how they can guide future studies to improve the translatability of findings from preclinical animal studies into the clinic.
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Abstract
Regions of the prefrontal and cingulate cortices play important roles in the regulation of behaviors elicited by threat. Dissecting out their differential involvement will greatly increase our understanding of the varied etiology of symptoms of anxiety. I review evidence for altered activity within the major divisions of the prefrontal cortex, including orbitofrontal, ventrolateral, dorsolateral, and ventromedial sectors, along with the anterior cingulate cortex in patients with clinical anxiety. This review is integrated with a discussion of current knowledge about the causal role of these different prefrontal and cingulate regions in threat-elicited behaviors from experimental studies in rodents and monkeys. I highlight commonalities and inconsistencies between species and discuss the current state of our translational success in relating findings across species. Finally, I identify key issues that, if addressed, may improve that success in the future.
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Affiliation(s)
- Angela C. Roberts
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge CB2 3DY, United Kingdom;
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Laird KT, Siddarth P, Krause B, Kilpatrick L, Milillo M, Aguilar Y, Narr KL, Lavretsky H. Anxiety symptoms are associated with smaller insular and orbitofrontal cortex volumes in late-life depression. J Affect Disord 2019; 256:282-287. [PMID: 31200165 PMCID: PMC6750975 DOI: 10.1016/j.jad.2019.05.066] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Revised: 04/19/2019] [Accepted: 05/27/2019] [Indexed: 10/26/2022]
Abstract
BACKGROUND Increasing understanding of the neural correlates of anxiety symptoms in late-life depression (LLD) could inform the development of more targeted and effective treatments. METHODS Grey matter volume (GMV) was assessed with volumetric magnetic resonance imaging in a sample of 113 adults ≥60 years with MDD using the following regions of interest: amygdala, anterior cingulate cortex (ACC), insula, orbitofrontal cortex (OFC), and temporal cortex. RESULTS After controlling for demographic (age, sex, education) and clinical variables (antidepressant use, anxiolytic use, duration of illness, medical comorbidity, cognitive functioning), greater severity of anxiety symptoms was associated with lower GMV bilaterally in the insula, F(1,102) = 6.63, p = 0.01, and OFC, F(1,102) = 8.35, p = 0.005. By contrast, depressive symptom severity was significantly associated with lower bilateral insula volumes, F(1,102) = 6.43, p = 0.01, but not OFC volumes, F(1,102) = 5.37, p = 0.02. LIMITATIONS Limitations include (1) the relatively mild nature of anxiety symptoms in our sample; (2) the cross-sectional research design, which prohibits inferences of directionality; (3) the relatively homogenous demographic of the sample, and (4) the exclusion of participants with significant psychiatric comorbidity, suicidality, or cognitive impairment. CONCLUSIONS Decreased OFC volumes may serve as a unique biomarker of anxiety symptoms in LLD. Future longitudinal and clinical studies with long-term follow up and more diverse samples will help further elucidate the biological, psychological, and social factors affecting associations between anxiety and brain morphology in LLD.
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Affiliation(s)
| | | | | | | | | | | | | | - Helen Lavretsky
- Department of Psychology and Human Development, University of California, Los Angeles (UCLA), 760 Westwood Plaza, Los Angeles, CA 90095, United States.
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DePoy LM, Shapiro LP, Kietzman HW, Roman KM, Gourley SL. β1-Integrins in the Developing Orbitofrontal Cortex Are Necessary for Expectancy Updating in Mice. J Neurosci 2019; 39:6644-6655. [PMID: 31253753 PMCID: PMC6703883 DOI: 10.1523/jneurosci.3072-18.2019] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 05/11/2019] [Accepted: 06/03/2019] [Indexed: 12/16/2022] Open
Abstract
Navigating a changing environment requires associating stimuli and actions with their likely outcomes and modifying these associations when they change. These processes involve the orbitofrontal cortex (OFC). Although some molecular mediators have been identified, developmental factors are virtually unknown. We hypothesized that the cell adhesion factor β1-integrin is essential to OFC function, anticipating developmental windows during which β1-integrins might be more influential than others. We discovered that OFC-selective β1-integrin silencing before adolescence, but not later, impaired the ability of mice to extinguish conditioned fear and select actions based on their likely outcomes. Early-life knock-down also reduced the densities of dendritic spines, the primary sites of excitatory plasticity in the brain, and weakened sensitivity to cortical inputs. Notwithstanding these defects in male mice, females were resilient to OFC (but not hippocampal) β1-integrin loss. Existing literature suggests that resilience may be explained by estradiol-mediated transactivation of β1-integrins and tropomyosin receptor kinase B (trkB). Accordingly, we discovered that a trkB agonist administered during adolescence corrected reward-related decision making in β1-integrin-deficient males. In sum, developmental β1-integrins are indispensable for OFC function later in life.SIGNIFICANCE STATEMENT The orbitofrontal cortex (OFC) is a subregion of the frontal cortex that allows organisms to link behaviors and stimuli with anticipated outcomes, and to make predictions about the consequences of one's behavior. Aspects of OFC development are particularly prolonged, extending well into adolescence, likely optimizing organisms' abilities to prospectively calculate the consequences of their actions and select behaviors appropriately; these decision making strategies improve as young individuals mature into adulthood. Molecular factors are not, however, well understood. Our experiments reveal that a cell adhesion protein termed "β1-integrin" is necessary for OFC neuronal maturation and function. Importantly, β1-integrins operate during a critical period equivalent to early adolescence in humans to optimize the ability of organisms to update expectancies later in life.
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Affiliation(s)
- Lauren M DePoy
- Department of Pediatrics
- Department of Psychiatry
- Yerkes National Primate Research Center
- Graduate Program in Neuroscience, and
| | - Lauren P Shapiro
- Department of Pediatrics
- Department of Psychiatry
- Yerkes National Primate Research Center
- Graduate Program in Molecular and Systems Pharmacology, Emory University, Atlanta, Georgia 30329
| | - Henry W Kietzman
- Department of Pediatrics
- Department of Psychiatry
- Yerkes National Primate Research Center
- Graduate Program in Neuroscience, and
| | - Kaitlyn M Roman
- Department of Pediatrics
- Department of Psychiatry
- Yerkes National Primate Research Center
- Graduate Program in Neuroscience, and
| | - Shannon L Gourley
- Department of Pediatrics,
- Department of Psychiatry
- Yerkes National Primate Research Center
- Graduate Program in Neuroscience, and
- Graduate Program in Molecular and Systems Pharmacology, Emory University, Atlanta, Georgia 30329
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Lambert HK, Peverill M, Sambrook KA, Rosen ML, Sheridan MA, McLaughlin KA. Altered development of hippocampus-dependent associative learning following early-life adversity. Dev Cogn Neurosci 2019; 38:100666. [PMID: 31276941 PMCID: PMC6684815 DOI: 10.1016/j.dcn.2019.100666] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 04/19/2019] [Accepted: 05/23/2019] [Indexed: 11/03/2022] Open
Abstract
Little is known about how childhood adversity influences the development of learning and memory and underlying neural circuits. We examined whether violence exposure in childhood influenced hippocampus-dependent associative learning and whether differences: a) were broad or specific to threat cues, and b) exhibited developmental variation. Children (n = 59; 8-19 years, 24 violence-exposed) completed an associative learning task with angry, happy, and neutral faces paired with objects during fMRI scanning. Outside the scanner, participants completed an associative memory test for face-object pairings. Violence-exposed children exhibited broad associative memory difficulties that became more pronounced with age, along with reduced recruitment of the hippocampus and atypical recruitment of fronto-parietal regions during encoding. Violence-exposed children also showed selective disruption of associative memory for threat cues regardless of age, along with reduced recruitment of the intraparietal sulcus (IPS) during encoding in the presence of threat. Broad associative learning difficulties may be a functional consequence of the toxic effects of early-life stress on hippocampal and fronto-parietal cortical development. Difficulties in the presence of threat cues may result from enhanced threat processing that disrupts encoding and short-term storage of associative information in the IPS. These associative learning difficulties may contribute to poor life outcomes following childhood violence exposure.
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Affiliation(s)
- Hilary K. Lambert
- Department of Psychology, University of Washington, 119A Guthrie Hall, Box 351525, Seattle, WA, 98195-1525, USA,Corresponding author.
| | - Matthew Peverill
- Department of Psychology, University of Washington, 119A Guthrie Hall, Box 351525, Seattle, WA, 98195-1525, USA.
| | - Kelly A. Sambrook
- Department of Psychology, University of Washington, 119A Guthrie Hall, Box 351525, Seattle, WA, 98195-1525, USA
| | - Maya L. Rosen
- Department of Psychology, University of Washington, 119A Guthrie Hall, Box 351525, Seattle, WA, 98195-1525, USA
| | - Margaret A. Sheridan
- Department of Psychology and Neuroscience, University of North Carolina, 235 E. Cameron Avenue, Chapel Hill, NC, 27599-3270, USA
| | - Katie A. McLaughlin
- Department of Psychology, Harvard University, William James Hall, 33 Kirkland Street, Cambridge, MA, 02138, USA
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Heightened Defensive Responses Following Subtotal Lesions of Macaque Orbitofrontal Cortex. J Neurosci 2019; 39:4133-4141. [PMID: 30910790 DOI: 10.1523/jneurosci.2812-18.2019] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 03/04/2019] [Accepted: 03/10/2019] [Indexed: 01/17/2023] Open
Abstract
Anxiety disorders are characterized by excessive attention to threat. Several brain areas, including the orbitofrontal cortex (OFC), have been associated with threat processing, with more recent work implicating specialized roles for the medial and lateral subregions of the OFC in mediating specific symptoms of anxiety disorders. Virtually no causal work, however, has evaluated the role of these OFC subregions in regulating behavioral responses under threat. To address this gap, we compared male rhesus monkeys (Macaca mulatta) with bilateral excitotoxic lesions restricted to either the lateral OFC (lOFC), targeting Walker's areas 11 and 13, or the medial OFC (mOFC), targeting Walker's area 14, to a group of unoperated controls on behavioral responses to the presentation of a fake rubber snake, fake spider, and neutral stimuli. Both lesion groups showed heightened defensive and reduced approach responses, accompanied by longer latencies to retrieve a food reward, in the presence of the threatening stimuli. Compared to unoperated controls, the mOFC lesion group also showed longer latencies to reach for rewards and a greater proportion of defensive responses (e.g., piloerection) in the presence of neutral stimuli. Thus, monkeys with mOFC lesions displayed a greater tendency to express defensive responses even in the absence of threat. Overall, our data reveal that both the mOFC and lOFC contribute to the attenuation of defensive responses. Notably, these findings, obtained following selective, excitotoxic lesions of the OFC, are diametrically opposed to the effects of aspiration lesions of OFC observed in macaques.SIGNIFICANCE STATEMENT Engaging in adaptive defensive responses under threat promotes biological fitness. The orbitofrontal cortex (OFC) has been implicated in regulating defensive responses to threat, with distinct subregions likely playing different roles. Here we tested the effects of excitotoxic damage restricted to either the lateral or medial subdivisions of the OFC in rhesus macaques. We found significantly heightened defense and reduced approach responses to threatening stimuli in both lesion groups. While lateral OFC lesions led to an increase in defense responses to the threatening stimuli, medial OFC lesions produced increases in defense responses to both threatening and neutral stimuli. Our findings provide insights into the neural regulation of defensive responses to threat and inform the etiology and treatment of anxiety disorders in humans.
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30
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Kong F, Ma X, You X, Xiang Y. The resilient brain: psychological resilience mediates the effect of amplitude of low-frequency fluctuations in orbitofrontal cortex on subjective well-being in young healthy adults. Soc Cogn Affect Neurosci 2019; 13:755-763. [PMID: 29939335 PMCID: PMC6121151 DOI: 10.1093/scan/nsy045] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 06/18/2018] [Indexed: 01/01/2023] Open
Abstract
Psychological resilience reflects the capacity to bounce back from stress, which plays an important role in health and well-being. However, less is known about the neural substrate for psychological resilience and the underlying mechanism for how psychological resilience enhances subjective well-being in the healthy brain. To investigate these issues, we employed fractional amplitude of low-frequency fluctuations (fALFF) measured with resting-state fMRI in 100 young healthy adults. The correlation analysis found that higher psychological resilience was related to lower fALFF in the left orbitofrontal cortex (OFC), which is involved in reward-related processing and emotion regulation. Furthermore, the mediation analysis indicated that psychological resilience acted as a full mediator of the association between the fALFF in left OFC and subjective well-being indicators (i.e. life satisfaction and hedonic balance). Importantly, these results remained significant after controlling for the effect of gray matter volume and regional homogeneity in the region. Overall, the present study provides the further evidence for functional neural substrates of psychological resilience and reveals a potential mechanism that psychological resilience mediates the effect of spontaneous brain activity on subjective well-being.
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Affiliation(s)
- Feng Kong
- School of Psychology, Shaanxi Normal University, China
| | - Xiaosi Ma
- School of Psychology, Shaanxi Normal University, China
| | - Xuqun You
- School of Psychology, Shaanxi Normal University, China
| | - Yanhui Xiang
- Department of Psychology, Hunan Normal University, China
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31
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Balada F, Lucas I, Blanch Á, Blanco E, Aluja A. Neuroticism is associated with reduced oxygenation levels in the lateral prefrontal cortex following exposure to unpleasant images. Physiol Behav 2019; 199:66-72. [DOI: 10.1016/j.physbeh.2018.11.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 10/04/2018] [Accepted: 11/02/2018] [Indexed: 12/22/2022]
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32
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Xue SW, Lee TW, Guo YH. Spontaneous activity in medial orbitofrontal cortex correlates with trait anxiety in healthy male adults. J Zhejiang Univ Sci B 2018; 19:643-653. [PMID: 30070087 DOI: 10.1631/jzus.b1700481] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Medial orbitofrontal cortex (mOFC) abnormalities have been observed in various anxiety disorders. However, the relationship between mOFC activity and anxiety among the healthy population has not been fully examined. Here, we conducted a resting state functional magnetic resonance imaging (R-fMRI) study with 56 healthy male adults from the Nathan Kline Institute/Rockland Sample (NKI-RS) to examine the relationship between the fractional amplitude of low-frequency fluctuation (fALFF) signals and trait anxiety across the whole brain. A Louvain method for module detection based on graph theory was further employed in the automated functional subdivision to explore subregional correlates of trait anxiety. The results showed that trait anxiety was related to fALFF in the mOFC. Additionally, the resting-state functional connectivity (RSFC) between the right subregions of the mOFC and the precuneus was correlated with trait anxiety. These findings provided evidence about the involvement of the mOFC in anxiety processing among the healthy population.
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Affiliation(s)
- Shao-Wei Xue
- Institutes of Psychological Sciences, Hangzhou Normal University, Hangzhou 311121, China.,Center for Cognition and Brain Disorders, Hangzhou Normal University, Hangzhou 311121, China.,Zhejiang Key Laboratory for Research in Assessment of Cognitive Impairments, Hangzhou 311121, China
| | - Tien-Wen Lee
- Institutes of Psychological Sciences, Hangzhou Normal University, Hangzhou 311121, China.,Center for Cognition and Brain Disorders, Hangzhou Normal University, Hangzhou 311121, China.,Zhejiang Key Laboratory for Research in Assessment of Cognitive Impairments, Hangzhou 311121, China.,Department of Psychiatry, Dajia Lee's General Hospital, Lee's Medical Corporation, Taichung 43748, China
| | - Yong-Hu Guo
- Institutes of Psychological Sciences, Hangzhou Normal University, Hangzhou 311121, China.,Center for Cognition and Brain Disorders, Hangzhou Normal University, Hangzhou 311121, China.,Zhejiang Key Laboratory for Research in Assessment of Cognitive Impairments, Hangzhou 311121, China
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Saitoh A, Soda A, Kayashima S, Yoshizawa K, Oka JI, Nagase H, Yamada M. A delta opioid receptor agonist, KNT-127, in the prelimbic medial prefrontal cortex attenuates glial glutamate transporter blocker-induced anxiety-like behavior in mice. J Pharmacol Sci 2018; 138:176-183. [DOI: 10.1016/j.jphs.2018.09.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 09/04/2018] [Accepted: 09/20/2018] [Indexed: 11/16/2022] Open
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Rosier M, Le Barillier L, Meunier D, El Yacoubi M, Malleret G, Salin PA. Post-learning paradoxical sleep deprivation impairs reorganization of limbic and cortical networks associated with consolidation of remote contextual fear memory in mice. Sleep 2018; 41:5115189. [DOI: 10.1093/sleep/zsy188] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Indexed: 12/21/2022] Open
Affiliation(s)
- Marius Rosier
- Forgetting and Cortical Dynamics, Lyon Neuroscience Research Center, University Lyon, Lyon, France
- Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche; Institut National de la Santé et de la Recherche Médicale (INSERM), Unité, France
| | - Léa Le Barillier
- Forgetting and Cortical Dynamics, Lyon Neuroscience Research Center, University Lyon, Lyon, France
- Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche; Institut National de la Santé et de la Recherche Médicale (INSERM), Unité, France
| | - David Meunier
- Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche; Institut National de la Santé et de la Recherche Médicale (INSERM), Unité, France
- Dycog, Lyon Neuroscience Research Center, CH Le Vinatier, Bron, France
- IMPACT, Lyon Neuroscience Research Center, Bron Cedex, France
- NEUROPAIN, Lyon Neuroscience Research Center, Hôpital Neurologique, Bron Cedex, France
- CMO, Lyon Neuroscience Research Center, Lyon Cedex, France
| | - Malika El Yacoubi
- Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche; Institut National de la Santé et de la Recherche Médicale (INSERM), Unité, France
| | - Gaël Malleret
- Forgetting and Cortical Dynamics, Lyon Neuroscience Research Center, University Lyon, Lyon, France
- Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche; Institut National de la Santé et de la Recherche Médicale (INSERM), Unité, France
| | - Paul-Antoine Salin
- Forgetting and Cortical Dynamics, Lyon Neuroscience Research Center, University Lyon, Lyon, France
- Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche; Institut National de la Santé et de la Recherche Médicale (INSERM), Unité, France
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35
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Barbosa C, Simmons JG, Vijayakumar N, Dudgeon P, Patton GC, Mundy LK, Allen NB, Whittle S. Interaction Between Parenting Styles and Adrenarcheal Timing Associated With Affective Brain Function in Late Childhood. J Am Acad Child Adolesc Psychiatry 2018; 57:678-686.e4. [PMID: 30196871 DOI: 10.1016/j.jaac.2018.05.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Revised: 05/13/2018] [Accepted: 06/20/2018] [Indexed: 01/26/2023]
Abstract
OBJECTIVE Parenting and pubertal timing have consistently been associated with internalizing and externalizing symptoms in childhood and adolescence, and there is some evidence that the interaction between these factors may be important in conferring risk. However, few studies have investigated whether neurobiological factors mediate these relationships. The current study examined whether interactions between adrenarcheal timing and parenting styles were associated with affective brain function and, in turn, mental health difficulties. METHOD Participants were 88 healthy children (46 female and 42 male, mean age 9.42 years, SD = 1.08 years), with 45 classified as relatively early and 43 as relatively late in adrenarcheal development based upon adrenal hormone levels. Participants completed an affective face functional magnetic resonance imaging task, and parents reported on 5 parenting styles and on child internalizing and externalizing symptoms. RESULTS Negative parenting styles (corporal punishment and poor monitoring) were associated with brain hemodynamic response while viewing affective faces in several subcortical and lateral prefrontal regions, and adrenarcheal timing and/or sex moderated most of these relationships. Sex differences in associations between corporal punishment and brain activation to affective faces indicated that late females might show less adaptive affective neural function when more exposed to this parenting style. CONCLUSION Findings suggest that the interaction between parenting styles and adrenarcheal timing is associated with affective brain function in late childhood, with marked sex differences. Further longitudinal research with larger samples is needed to corroborate and expand upon these findings.
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Affiliation(s)
- Carolina Barbosa
- Melbourne School of Psychological Sciences, The University of Melbourne, Australia.
| | - Julian G Simmons
- Melbourne School of Psychological Sciences, The University of Melbourne, Australia; Melbourne Neuropsychiatry Centre, The University of Melbourne and Melbourne Health, Australia
| | | | - Paul Dudgeon
- Melbourne School of Psychological Sciences, The University of Melbourne, Australia
| | - George C Patton
- The University of Melbourne, the Murdoch Children's Research Institute, and the Centre for Adolescent Health, Royal Children's Hospital, Australia
| | - Lisa K Mundy
- The University of Melbourne, the Murdoch Children's Research Institute, and the Centre for Adolescent Health, Royal Children's Hospital, Australia
| | | | - Sarah Whittle
- Melbourne School of Psychological Sciences, The University of Melbourne, Australia; Melbourne Neuropsychiatry Centre, The University of Melbourne and Melbourne Health, Australia
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You R, Ho YS, Hung CHL, Liu Y, Huang CX, Chan HN, Ho SL, Lui SY, Li HW, Chang RCC. Silica nanoparticles induce neurodegeneration-like changes in behavior, neuropathology, and affect synapse through MAPK activation. Part Fibre Toxicol 2018; 15:28. [PMID: 29970116 PMCID: PMC6029039 DOI: 10.1186/s12989-018-0263-3] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 05/29/2018] [Indexed: 12/27/2022] Open
Abstract
Background Silica nanoparticles (SiO2-NPs) are naturally enriched and broadly utilized in the manufacturing industry. While previous studies have demonstrated toxicity in neuronal cell lines after SiO2-NPs exposure, the role of SiO2-NPs in neurodegeneration is largely unknown. Here, we evaluated the effects of SiO2-NPs-exposure on behavior, neuropathology, and synapse in young adult mice and primary cortical neuron cultures. Results Male C57BL/6 N mice (3 months old) were exposed to either vehicle (sterile PBS) or fluorescein isothiocyanate (FITC)-tagged SiO2-NPs (NP) using intranasal instillation. Behavioral tests were performed after 1 and 2 months of exposure. We observed decreased social activity at both time points as well as anxiety and cognitive impairment after 2 months in the NP-exposed mice. NP deposition was primarily detected in the medial prefrontal cortex and the hippocampus. Neurodegeneration-like pathological changes, including reduced Nissl staining, increased tau phosphorylation, and neuroinflammation, were also present in the brains of NP-exposed mice. Furthermore, we observed NP-induced impairment in exocytosis along with decreased synapsin I and increased synaptophysin expression in the synaptosome fractions isolated from the frontal cortex as well as primary neuronal cultures. Extracellular signal-regulated kinase (ERK) and c-Jun N-terminal kinase (JNK) were also activated in the frontal cortex of NP-exposed mice. Moreover, inhibition of ERK activation prevented NP-mediated changes in exocytosis in cultured neurons, highlighting a key role in the changes induced by NP exposure. Conclusions Intranasal instillation of SiO2-NPs results in mood dysfunction and cognitive impairment in young adult mice and causes neurodegeneration-like pathology and synaptic changes via ERK activation. Electronic supplementary material The online version of this article (10.1186/s12989-018-0263-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ran You
- Laboratory of Neurodegenerative Diseases, School of Biomedical Sciences, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong, SAR, China.,Present address: Nanjing Key Laboratory of Pediatrics, Children's Hospital of Nanjing Medical University, Nanjing, 210008, China
| | - Yuen-Shan Ho
- School of Nursing, Faculty of Health and Social Sciences, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, SAR, China
| | - Clara Hiu-Ling Hung
- Laboratory of Neurodegenerative Diseases, School of Biomedical Sciences, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong, SAR, China
| | - Yan Liu
- Laboratory of Neurodegenerative Diseases, School of Biomedical Sciences, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong, SAR, China
| | - Chun-Xia Huang
- Laboratory of Neurodegenerative Diseases, School of Biomedical Sciences, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong, SAR, China
| | - Hei-Nga Chan
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong, SAR, China
| | - See-Lok Ho
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong, SAR, China
| | - Sheung-Yeung Lui
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong, SAR, China
| | - Hung-Wing Li
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong, SAR, China
| | - Raymond Chuen-Chung Chang
- Laboratory of Neurodegenerative Diseases, School of Biomedical Sciences, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong, SAR, China. .,State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Pokfulam, Hong Kong, SAR, China. .,School of Biomedical Sciences, Rm. L4-49, Laboratory Block, Faculty of Medicine Building, 21 Sassoon Road, Pokfulam, Hong Kong.
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Matsukawa K, Endo K, Asahara R, Yoshikawa M, Kusunoki S, Ishida T. Prefrontal oxygenation correlates to the responses in facial skin blood flows during exposure to pleasantly charged movie. Physiol Rep 2018; 5:5/21/e13488. [PMID: 29122959 PMCID: PMC5688780 DOI: 10.14814/phy2.13488] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 10/10/2017] [Accepted: 10/11/2017] [Indexed: 11/24/2022] Open
Abstract
Our laboratory reported that facial skin blood flow may serve as a sensitive tool to assess an emotional status. Cerebral neural correlates during emotional interventions should be sought in relation to the changes in facial skin blood flow. To test the hypothesis that prefrontal activity has positive relation to the changes in facial skin blood flow during emotionally charged stimulation, we examined the dynamic changes in prefrontal oxygenation (with near‐infrared spectroscopy) and facial skin blood flows (with two‐dimensional laser speckle and Doppler flowmetry) during emotionally charged audiovisual challenges for 2 min (by viewing comedy, landscape, and horror movie) in 14 subjects. Hand skin blood flow and systemic hemodynamics were simultaneously measured. The extents of pleasantness and consciousness for each emotional stimulus were estimated by subjective rating from −5 (the most unpleasant; the most unconscious) to +5 (the most pleasant; the most conscious). Positively charged emotional stimulation (comedy) simultaneously decreased (P < 0.05) prefrontal oxygenation and facial skin blood flow, whereas negatively charged (horror) or neutral (landscape) emotional stimulation did not alter or slightly decreased them. Any of hand skin blood flow and systemic cardiovascular variables did not change significantly during positively charged emotional stimulation. The changes in prefrontal oxygenation had a highly positive correlation with the changes in facial skin blood flow without altering perfusion pressure, and they were inversely correlated with the subjective rating of pleasantness. The reduction in prefrontal oxygenation during positively charged emotional stimulation suggests a decrease in prefrontal neural activity, which may in turn elicit neurally mediated vasoconstriction of facial skin blood vessels.
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Affiliation(s)
- Kanji Matsukawa
- Department of Integrative Physiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kana Endo
- Department of Integrative Physiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Ryota Asahara
- Department of Integrative Physiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Miho Yoshikawa
- Department of Integrative Physiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Shinya Kusunoki
- Department of Integrative Physiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Tomoko Ishida
- Department of Integrative Physiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
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38
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Kaag AM, Schulte MHJ, Jansen JM, van Wingen G, Homberg J, van den Brink W, Wiers RW, Schmaal L, Goudriaan AE, Reneman L. The relation between gray matter volume and the use of alcohol, tobacco, cocaine and cannabis in male polysubstance users. Drug Alcohol Depend 2018; 187:186-194. [PMID: 29679913 DOI: 10.1016/j.drugalcdep.2018.03.010] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 02/12/2018] [Accepted: 03/06/2018] [Indexed: 02/03/2023]
Abstract
BACKGROUND Neuroimaging studies have demonstrated gray matter (GM) volume abnormalities in substance users. While the majority of substance users are polysubstance users, very little is known about the relation between GM volume abnormalities and polysubstance use. METHODS In this study we assessed the relation between GM volume, and the use of alcohol, tobacco, cocaine and cannabis as well as the total number of substances used, in a sample of 169 males: 15 non-substance users, 89 moderate drinkers, 27 moderate drinkers who also smoke tobacco, 13 moderate drinkers who also smoke tobacco and use cocaine, 10 heavy drinkers who smoke tobacco and use cocaine and 15 heavy drinkers who smoke tobacco, cannabis and use cocaine. RESULTS Regression analyses showed that there was a negative relation between the number of substances used and volume of the dorsal medial prefrontal cortex (mPFC) and the ventral mPFC. Without controlling for the use of other substances, the volume of the dorsal mPFC was negatively associated with the use of alcohol, tobacco, and cocaine. After controlling for the use of other substances, a negative relation was found between tobacco and cocaine and volume of the thalami and ventrolateral PFC, respectively. CONCLUSION These findings indicate that mPFC alterations may not be substance-specific, but rather related to the number of substances used, whereas, thalamic and ventrolateral PFC pathology is specifically associated with tobacco and cocaine use, respectively. These findings are important, as the differential alterations in GM volume may underlie different cognitive deficits associated with substance use disorders.
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Affiliation(s)
- A M Kaag
- Addiction, Development and Psychopathology (ADAPT) Lab, Department of Psychology, University of Amsterdam, The Netherlands; Department of Anatomy and Neurosciences, Center for Neurogenomics and Cognitive Research, Amsterdam Neuroscience, VU University Medical Center, The Netherlands; Amsterdam Brain and Cognition, University of Amsterdam, The Netherlands.
| | - M H J Schulte
- Addiction, Development and Psychopathology (ADAPT) Lab, Department of Psychology, University of Amsterdam, The Netherlands; Departement of Radiology and Nuclear Medicine, Amsterdam Neuroscience, Academic Medical Centre, Amsterdam, The Netherlands
| | - J M Jansen
- Departement of Psychiatry, Amsterdam Neuroscience, Academic Medical Centre, Amsterdam, The Netherlands; Leiden University, Faculty of Law, Institute for Criminal Law & Criminology, Leiden, The Netherlands
| | - G van Wingen
- Amsterdam Brain and Cognition, University of Amsterdam, The Netherlands; Departement of Psychiatry, Amsterdam Neuroscience, Academic Medical Centre, Amsterdam, The Netherlands
| | - J Homberg
- Donders Institute for Brain, Cognition, and Behaviour, Radboud University, Medical Centre, Nijmegen, The Netherlands
| | - W van den Brink
- Departement of Psychiatry, Amsterdam Neuroscience, Academic Medical Centre, Amsterdam, The Netherlands
| | - R W Wiers
- Addiction, Development and Psychopathology (ADAPT) Lab, Department of Psychology, University of Amsterdam, The Netherlands; Amsterdam Brain and Cognition, University of Amsterdam, The Netherlands
| | - L Schmaal
- Orygen, The National Centre of Excellence in Youth Mental Health, Melbourne, Australia; Centre for Youth Mental Health, The University of Melbourne, Melbourne, Australia; Department of Psychiatry, Amsterdam Neuroscience, VU University Medical Center, Amsterdam, The Netherlands
| | - A E Goudriaan
- Amsterdam Brain and Cognition, University of Amsterdam, The Netherlands; Departement of Psychiatry, Amsterdam Neuroscience, Academic Medical Centre, Amsterdam, The Netherlands
| | - L Reneman
- Amsterdam Brain and Cognition, University of Amsterdam, The Netherlands; Departement of Radiology and Nuclear Medicine, Amsterdam Neuroscience, Academic Medical Centre, Amsterdam, The Netherlands
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Sarlitto MC, Foilb AR, Christianson JP. Inactivation of the Ventrolateral Orbitofrontal Cortex Impairs Flexible Use of Safety Signals. Neuroscience 2018; 379:350-358. [PMID: 29604383 DOI: 10.1016/j.neuroscience.2018.03.037] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 03/20/2018] [Accepted: 03/21/2018] [Indexed: 01/30/2023]
Abstract
Survival depends on adaptation to shifting environmental risks and opportunities. Regarding risks, the mechanisms which permit acquisition, recall, and flexible use of aversive associations is poorly understood. Drawing on the evidence that the orbital frontal cortex is critical to integrating outcome expectancies with flexible appetitive behavioral responses, we hypothesized that OFC would contribute to behavioral flexibility within an aversive learning domain. We introduce a fear conditioning procedure in which adult male rats were presented with shock-paired conditioned stimulus (CS+) or a safety cue (CS-). In a recall test, rats exhibit greater freezing to the CS+ than the CS-. Temporary inactivation of the ventrolateral OFC with muscimol prior to conditioning did not affect later discrimination, but inactivation after learning and prior to recall impaired discrimination between safety and danger cues. This result complements prior research in the appetitive domain and suggests that the OFC plays a general role in behavioral flexibility regardless of the valence of the CS.
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Affiliation(s)
- Mary C Sarlitto
- Department of Psychology, Boston College, Chestnut Hill, MA 02467, USA
| | - Allison R Foilb
- Department of Psychology, Boston College, Chestnut Hill, MA 02467, USA
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40
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Gemmel M, Bögi E, Ragan C, Hazlett M, Dubovicky M, van den Hove DL, Oberlander TF, Charlier TD, Pawluski JL. Perinatal selective serotonin reuptake inhibitor medication (SSRI) effects on social behaviors, neurodevelopment and the epigenome. Neurosci Biobehav Rev 2018; 85:102-116. [DOI: 10.1016/j.neubiorev.2017.04.023] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Revised: 04/10/2017] [Accepted: 04/21/2017] [Indexed: 12/15/2022]
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41
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Gemmel M, Kokras N, Dalla C, Pawluski JL. Perinatal fluoxetine prevents the effect of pre-gestational maternal stress on 5-HT in the PFC, but maternal stress has enduring effects on mPFC synaptic structure in offspring. Neuropharmacology 2018; 128:168-180. [DOI: 10.1016/j.neuropharm.2017.10.009] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 10/04/2017] [Accepted: 10/07/2017] [Indexed: 01/29/2023]
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42
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Shiba Y, Oikonomidis L, Sawiak S, Fryer TD, Hong YT, Cockcroft G, Santangelo AM, Roberts AC. Converging Prefronto-Insula-Amygdala Pathways in Negative Emotion Regulation in Marmoset Monkeys. Biol Psychiatry 2017; 82:895-903. [PMID: 28756869 PMCID: PMC5697497 DOI: 10.1016/j.biopsych.2017.06.016] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Revised: 06/09/2017] [Accepted: 06/10/2017] [Indexed: 02/06/2023]
Abstract
BACKGROUND Impaired regulation of emotional responses to potential threat is a core feature of affective disorders. However, while the subcortical circuitry responsible for processing and expression of fear has been well characterized, the top-down control of this circuitry is less well understood. Our recent studies demonstrated that heightened emotionality, as measured both physiologically and behaviorally, during conditioned fear and innate/social threat was induced, independently, by excitotoxic lesions of either the anterior orbitofrontal cortex (antOFC) or ventrolateral prefrontal cortex (vlPFC). An important outstanding question is whether the antOFC and vlPFC act on common or distinct downstream targets to regulate negative emotion. METHODS The question was addressed by combining localized excitotoxic lesions in the PFC of a nonhuman primate and functional neuroimaging ([18F]fluorodeoxyglucose positron emission tomography) with a fear-regulating extinction paradigm. Marmoset monkeys with unilateral lesions of either the antOFC or vlPFC were scanned immediately following exposure to a fearful or safe context, and differences in [18F]fluorodeoxyglucose uptake were evaluated. RESULTS [18F]fluorodeoxyglucose uptake in the insula and amygdala of the intact hemisphere was significantly increased in response to the fearful context compared with the safe context. Such discrimination between the two contexts was not reflected in the activity of the insula-amygdala of the antOFC or vlPFC-lesioned hemisphere. Instead, uptake was at an intermediate level in both contexts. CONCLUSIONS These findings demonstrate that the distinct control functions of the antOFC and vlPFC converge on the same downstream targets to promote emotion regulation, taking us closer to a mechanistic understanding of different forms of anxiety.
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Affiliation(s)
- Yoshiro Shiba
- Department of Physiology, Development and Neuroscience, Wolfson Brain Imaging Centre, University of Cambridge, Cambridge, United Kingdom; Behavioural and Clinical Neuroscience Institute, Wolfson Brain Imaging Centre, University of Cambridge, Cambridge, United Kingdom
| | - Lydia Oikonomidis
- Department of Physiology, Development and Neuroscience, Wolfson Brain Imaging Centre, University of Cambridge, Cambridge, United Kingdom; Behavioural and Clinical Neuroscience Institute, Wolfson Brain Imaging Centre, University of Cambridge, Cambridge, United Kingdom
| | - Stephen Sawiak
- Department of Psychology, Wolfson Brain Imaging Centre, University of Cambridge, Cambridge, United Kingdom; Behavioural and Clinical Neuroscience Institute, Wolfson Brain Imaging Centre, University of Cambridge, Cambridge, United Kingdom
| | - Tim D Fryer
- Department of Clinical Neurosciences, Wolfson Brain Imaging Centre, University of Cambridge, Cambridge, United Kingdom
| | - Young T Hong
- Department of Clinical Neurosciences, Wolfson Brain Imaging Centre, University of Cambridge, Cambridge, United Kingdom
| | - Gemma Cockcroft
- Department of Physiology, Development and Neuroscience, Wolfson Brain Imaging Centre, University of Cambridge, Cambridge, United Kingdom; Behavioural and Clinical Neuroscience Institute, Wolfson Brain Imaging Centre, University of Cambridge, Cambridge, United Kingdom
| | - Andrea M Santangelo
- Department of Physiology, Development and Neuroscience, Wolfson Brain Imaging Centre, University of Cambridge, Cambridge, United Kingdom; Behavioural and Clinical Neuroscience Institute, Wolfson Brain Imaging Centre, University of Cambridge, Cambridge, United Kingdom
| | - Angela C Roberts
- Department of Physiology, Development and Neuroscience, Wolfson Brain Imaging Centre, University of Cambridge, Cambridge, United Kingdom; Behavioural and Clinical Neuroscience Institute, Wolfson Brain Imaging Centre, University of Cambridge, Cambridge, United Kingdom.
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Forcadell E, Torrents-Rodas D, Treen D, Fullana MA, Tortella-Feliu M. Attentional Control and Fear Extinction in Subclinical Fear: An Exploratory Study. Front Psychol 2017; 8:1654. [PMID: 29018384 PMCID: PMC5622961 DOI: 10.3389/fpsyg.2017.01654] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Accepted: 09/08/2017] [Indexed: 12/19/2022] Open
Abstract
Attentional control (AC) and fear extinction learning are known to be involved in pathological anxiety. In this study we explored whether individual differences in non-emotional AC were associated with individual differences in the magnitude and gradient of fear extinction (learning and recall). In 50 individuals with fear of spiders, we collected measures of non-emotional AC by means of self-report and by assessing the functioning of the major attention networks (executive control, orienting, and alerting). The participants then underwent a paradigm assessing fear extinction learning and extinction recall. The two components of the orienting network functioning (costs and benefits) were significantly associated with fear extinction gradient over and above the effects of trait anxiety. Specifically, participants with enhanced orienting costs (i.e., difficulties in disengaging attention from cues not relevant for the task) showed faster extinction learning, while those with enhanced orienting benefits (i.e., attention facilitated by valid cues) exhibited faster extinction recall as measured by fear-potentiated startle and Unconditioned Stimulus expectancies, respectively. Our findings suggest that, in non-emotional conditions, the orienting component of attention may be predictive of fear extinction. They also show that the use of fear extinction gradients and the exploration of individual differences in non-emotional AC (using performance-based measures of attentional network functioning) can provide a better understanding of individual differences in fear learning. Our findings also may help to understand differences in exposure therapy outcomes.
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Affiliation(s)
- Eduard Forcadell
- Department of Psychiatry and Forensic Medicine, School of Medicine, Universitat Autònoma de Barcelona, Barcelona, Spain.,Department of Mental Health, Parc Taulí Hospital Universitari, Institut d'Investigació i Innovació Parc Taulí I3PT, Universitat Autònoma de Barcelona, Sabadell, Spain
| | - David Torrents-Rodas
- Department of Psychiatry and Forensic Medicine, School of Medicine, Universitat Autònoma de Barcelona, Barcelona, Spain.,Specialized Department in Mental Health and Intellectual Disability, Institut Assistència Sanitària (IAS), Institut d'Investigació Biomèdica de Girona, Parc Hospitalari Martí i Julià, Salt, Spain
| | - Devi Treen
- Institute of Neuropsychiatry and Addictions, Parc de Salut Mar, Barcelona, Spain
| | - Miquel A Fullana
- Department of Psychiatry and Forensic Medicine, School of Medicine, Universitat Autònoma de Barcelona, Barcelona, Spain.,Anxiety Unit, Institute of Neuropsychiatry and Addictions, Hospital del Mar, CIBERSAM, Barcelona, Spain.,IMIM, Hospital del Mar Medical Research Institute, Barcelona, Spain
| | - Miquel Tortella-Feliu
- University Research Institute on Health Sciencies (IUNICS), Universitat de les Illes Balears, Mallorca, Spain.,PROMOSAM Red de Investigación en Procesos, Mecanismos y Tratamientos Psicológicos para la Promoción de la Salud Mental, Mallorca, Spain
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Kang EK, Lee KS, Lee SH. Reduced Cortical Thickness in the Temporal Pole, Insula, and Pars Triangularis in Patients with Panic Disorder. Yonsei Med J 2017; 58:1018-1024. [PMID: 28792148 PMCID: PMC5552629 DOI: 10.3349/ymj.2017.58.5.1018] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Revised: 03/31/2017] [Accepted: 05/09/2017] [Indexed: 01/22/2023] Open
Abstract
PURPOSE Recent neuroimaging findings have revealed that paralimbic and prefrontal regions are involved in panic disorder (PD). However, no imaging studies have compared differences in cortical thickness between patients with PD and healthy control (HC) subjects. MATERIALS AND METHODS Forty-seven right-handed patients with PD who met the diagnostic criteria in the Diagnostic and Statistical Manual of Mental Disorders-4th edition-text revision, and 30 HC subjects were enrolled. We used the FreeSurfer software package for estimating the cortical thickness of regions of interest, including the temporal pole, insula, and pars triangularis (mid-ventrolateral prefrontal cortex). RESULTS Cortical thickness of the temporal pole (p=0.033, right), insula (p=0.017, left), and pars triangularis (p=0.008, left; p=0.025, right) in patients with PD was significantly lower, compared with HC subjects (Benjamini-Hochberg false discovery rate correction). Exploratory analysis revealed a significant negative correlation between the cortical thickness of the right temporal pole and Beck Depression Inventory scores (r=-0.333, p=0.027) in patients with PD and positive correlations between the cortical thickness of the left pars triangularis and Panic Disorder Severity Scale (r=0.429, p=0.004), Anxiety Sensitivity Index-Revised (r=0.380, p=0.011), and Beck Anxiety Inventory (r=0.421, p=0.004) scores using Pearson's correlation. CONCLUSION Ours study is the first to demonstrate cortical thickness reduction in the temporal pole, insula, and pars triangularis in patients with PD, compared with the HC subjects. These findings suggest that reduced cortical thickness could play an important role in the pathophysiology of PD.
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Affiliation(s)
- Eun Kyoung Kang
- Department of Psychiatry, CHA Bundang Medical Center, CHA University, Seongnam, Korea
| | - Kang Soo Lee
- Department of Psychiatry, CHA Bundang Medical Center, CHA University, Seongnam, Korea
| | - Sang Hyuk Lee
- Department of Psychiatry, CHA Bundang Medical Center, CHA University, Seongnam, Korea.
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Jennings CG, Landman R, Zhou Y, Sharma J, Hyman J, Movshon JA, Qiu Z, Roberts AC, Roe AW, Wang X, Zhou H, Wang L, Zhang F, Desimone R, Feng G. Opportunities and challenges in modeling human brain disorders in transgenic primates. Nat Neurosci 2017; 19:1123-30. [PMID: 27571191 DOI: 10.1038/nn.4362] [Citation(s) in RCA: 88] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Accepted: 07/19/2016] [Indexed: 12/15/2022]
Abstract
Molecular genetic tools have had a profound impact on neuroscience, but until recently their application has largely been confined to a few model species, most notably mouse, zebrafish, Drosophila melanogaster and Caenorhabditis elegans. With the development of new genome engineering technologies such as CRISPR, it is becoming increasingly feasible to apply these molecular tools in a wider range of species, including nonhuman primates. This will lead to many opportunities for brain research, but it will also pose challenges. Here we identify some of these opportunities and challenges in light of recent and foreseeable technological advances and offer some suggestions. Our main focus is on the creation of new primate disease models for understanding the pathological mechanisms of brain disorders and for developing new approaches to effective treatment. However, we also emphasize that primate genetic models have great potential to address many fundamental questions about brain function, providing an essential foundation for future progress in disease research.
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Affiliation(s)
- Charles G Jennings
- McGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.,Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Rogier Landman
- McGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.,Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.,Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
| | - Yang Zhou
- McGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.,Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Jitendra Sharma
- Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.,Picower Institute for Learning and Memory, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Julia Hyman
- McGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.,Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - J Anthony Movshon
- Center for Neural Science, New York University, New York, New York, USA
| | - Zilong Qiu
- Institute of Neuroscience, CAS Key Laboratory of Primate Neurobiology, State Key Laboratory of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Angela C Roberts
- Department of Physiology, Development and Neuroscience, Behavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge, UK
| | - Anna Wang Roe
- Interdisciplinary Institute of Neuroscience and Technology, Zhejiang University, Hangzhou, China
| | - Xiaoqin Wang
- Laboratory of Auditory Neurophysiology, Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Huihui Zhou
- The Brain Cognition and Brain Disease Institute (BCBDI) for Collaboration Research of SIAT at CAS and McGovern Institute at MIT, Shenzhen Institutes of Advanced Technology (SIAT), Chinese Academy of Science, Shenzhen, China
| | - Liping Wang
- Shenzhen Key Lab of Neuropsychiatric Modulation and Collaborative Innovation Center for Brain Science, CAS Center for Excellence in Brain Science and Intelligence Technology, The Brain Cognition and Brain Disease Institute (BCBDI) for Collaboration Research of SIAT at CAS and McGovern Institute at MIT, Shenzhen Institutes of Advanced Technology (SIAT), Chinese Academy of Science, Shenzhen, China
| | - Feng Zhang
- McGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.,Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.,Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
| | - Robert Desimone
- McGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.,Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Guoping Feng
- McGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.,Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.,Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
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Wang X, Zhang J, Yuan Y, Li T, Zhang L, Ding J, Jiang S, Li J, Zhu L, Zhang K. Cerebral metabolic change in Parkinson's disease patients with anxiety: A FDG-PET study. Neurosci Lett 2017; 653:202-207. [PMID: 28579485 DOI: 10.1016/j.neulet.2017.05.062] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 03/27/2017] [Accepted: 05/28/2017] [Indexed: 01/11/2023]
Abstract
OBJECT To detect the cerebral metabolic bases of Parkinson's disease (PD) patients with anxiety. METHODS Totally 28 idiopathic PD patients without depression (17-item Hamilton Depression Rating Scale, HAMD score <14) were enrolled in our study. All subjects were classified into PD with anxiety (PD-A) (n=13) and PD without anxiety (PD-NA) (n=15) by cutoff score of 11 according to Hamilton Anxiety Rating Scale (HAMA). Besides, age- and gender- matched healthy controls (HCs) (n=15) were selected. A resting-state F-18 fluorodeoxyglucose positron emission tomography (FDG-PET) scan was applied to estimate cerebral metabolic activity. All statistical analyses were performed using IBM SPSS Statistics V20.0.0 software, while statistical parametric mapping software (SPM) was used to analyze the FDG-PET images. RESULTS PD-A showed decreased glucose metabolism in the bilateral orbitofrontal cortex (OFC, BA10 and BA11) when compared with PD-NA. Significant decrease of cerebral glucose metabolism in the bilateral OFC, bilateral supplementary motor area (SMA, BA6), bilateral dorsal anterior cingulate cortex (dACC, BA32), right dorsolateral prefrontal cortex (dlPFC, BA9), right ventrolateral prefrontal cortex (vlPFC, BA44), right putamen and left caudatum was detected in PD-A compared with HCs. There was significant reduced glucose metabolism of the bilateral SMA in PD-NA when compared with HCs (uncorrected p<0.005). CONCLUSION The anxiety of PD was associated with the metabolic reductions of PFC and striatal areas. OFC, part of PFC, could be taken as a characteristic feature for anxiety in PD. This metabolic pattern suggested that deficits of prefrontostriatal pathways might affect anxiety mood in PD.
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Affiliation(s)
- Xixi Wang
- Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing 210029, China
| | - Jiejin Zhang
- Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing 210029, China
| | - Yongsheng Yuan
- Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing 210029, China
| | - Tiannv Li
- Department of Nuclear Medicine, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing 210029, China
| | - Li Zhang
- Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing 210029, China
| | - Jian Ding
- Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing 210029, China
| | - Siming Jiang
- Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing 210029, China
| | - Junyi Li
- Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing 210029, China
| | - Lin Zhu
- Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing 210029, China
| | - Kezhong Zhang
- Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing 210029, China.
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Oikonomidis L, Santangelo AM, Shiba Y, Clarke FH, Robbins TW, Roberts AC. A dimensional approach to modeling symptoms of neuropsychiatric disorders in the marmoset monkey. Dev Neurobiol 2017; 77:328-353. [PMID: 27589556 PMCID: PMC5412688 DOI: 10.1002/dneu.22446] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 08/22/2016] [Accepted: 08/26/2016] [Indexed: 01/19/2023]
Abstract
Some patients suffering from the same neuropsychiatric disorder may have no overlapping symptoms whilst others may share symptoms common to other distinct disorders. Therefore, the Research Domain Criteria initiative recognises the need for better characterisation of the individual symptoms on which to focus symptom-based treatment strategies. Many of the disorders involve dysfunction within the prefrontal cortex (PFC) and so the marmoset, due to their highly developed PFC and small size, is an ideal species for studying the neurobiological basis of the behavioural dimensions that underlie these symptoms.Here we focus on a battery of tests that address dysfunction spanning the cognitive (cognitive inflexibility and working memory), negative valence (fear generalisation and negative bias) and positive valence (anhedonia) systems pertinent for understanding disorders such as ADHD, Schizophrenia, Anxiety, Depression and OCD. Parsing the separable prefrontal and striatal circuits and identifying the selective neurochemical modulation (serotonin vs dopamine) that underlie cognitive dysfunction have revealed counterparts in the clinical domain. Aspects of the negative valence system have been explored both at individual- (trait anxiety and genetic variation in serotonin transporter) and circuit-based levels enabling the understanding of generalisation processes, negative biases and differential responsiveness to SSRIs. Within the positive valence system, the combination of cardiovascular and behavioural measures provides a framework for understanding motivational, anticipatory and consummatory aspects of anhedonia and their neurobiological mechanisms. Together, the direct comparison of experimental findings in marmosets with clinical studies is proving an excellent translational model to address the behavioural dimensions and neurobiology of neuropsychiatric symptoms. © 2016 Wiley Periodicals, Inc. Develop Neurobiol 77: 328-353, 2017.
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Affiliation(s)
- Lydia Oikonomidis
- Department of Physiology, Development and Neuroscience, University of Cambridge, Downing Street, Cambridge, CB2 3DY, United Kingdom
- Behavioural and Clinical Neuroscience Institute, University of Cambridge, Downing Street, CB2 3EB, United Kingdom
| | - Andrea M Santangelo
- Department of Physiology, Development and Neuroscience, University of Cambridge, Downing Street, Cambridge, CB2 3DY, United Kingdom
- Behavioural and Clinical Neuroscience Institute, University of Cambridge, Downing Street, CB2 3EB, United Kingdom
| | - Yoshiro Shiba
- Department of Physiology, Development and Neuroscience, University of Cambridge, Downing Street, Cambridge, CB2 3DY, United Kingdom
- Behavioural and Clinical Neuroscience Institute, University of Cambridge, Downing Street, CB2 3EB, United Kingdom
| | - F Hannah Clarke
- Department of Physiology, Development and Neuroscience, University of Cambridge, Downing Street, Cambridge, CB2 3DY, United Kingdom
- Behavioural and Clinical Neuroscience Institute, University of Cambridge, Downing Street, CB2 3EB, United Kingdom
| | - Trevor W Robbins
- Behavioural and Clinical Neuroscience Institute, University of Cambridge, Downing Street, CB2 3EB, United Kingdom
- Department of Psychology, University of Cambridge, Downing Street, Cambridge, CB2 3EB, United Kingdom
| | - Angela C Roberts
- Department of Physiology, Development and Neuroscience, University of Cambridge, Downing Street, Cambridge, CB2 3DY, United Kingdom
- Behavioural and Clinical Neuroscience Institute, University of Cambridge, Downing Street, CB2 3EB, United Kingdom
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Hippocampal Contribution to Context Encoding across Development Is Disrupted following Early-Life Adversity. J Neurosci 2017; 37:1925-1934. [PMID: 28093475 DOI: 10.1523/jneurosci.2618-16.2017] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 01/07/2017] [Accepted: 01/12/2017] [Indexed: 12/15/2022] Open
Abstract
Context can drastically influence responses to environmental stimuli. For example, a gunshot should provoke a different response at a public park than a shooting range. Little is known about how contextual processing and neural correlates change across human development or about individual differences related to early environmental experiences. Children (N = 60; 8-19 years, 24 exposed to interpersonal violence) completed a context encoding task during fMRI scanning using a delayed match-to-sample design with neutral, happy, and angry facial cues embedded in realistic background scenes. Outside the scanner, participants completed a memory test for context-face pairings. Context memory and neural correlates of context encoding did not vary with age. Larger hippocampal volume was associated with better context memory. Posterior hippocampus was recruited during context encoding, and greater activation in this region predicted better memory for contexts paired with angry faces. Children exposed to violence had poor memory of contexts paired with angry faces, reduced hippocampal volume, and atypical neural recruitment on encoding trials with angry faces, including reduced hippocampal activation and greater functional connectivity between hippocampus and ventrolateral prefrontal cortex (vlPFC). Greater hippocampus-vlPFC connectivity was associated with worse memory for contexts paired with angry faces. Posterior hippocampus appears to support context encoding, a process that does not exhibit age-related variation from middle childhood to late adolescence. Exposure to dangerous environments in childhood is associated with poor context encoding in the presence of threat, likely due to greater vlPFC-dependent attentional narrowing on threat cues at the expense of hippocampus-dependent processing of the broader context.SIGNIFICANCE STATEMENT The ability to use context to guide reactions to environmental stimuli promotes flexible behavior. Remarkably little research has examined how contextual processing changes across development or about influences of the early environment. We provide evidence for posterior hippocampus involvement in context encoding in youth and lack of age-related variation from middle childhood to late adolescence. Children exposed to interpersonal violence exhibited poor memory of contexts paired with angry faces and atypical neural recruitment during context encoding in the presence of threatening facial cues. Heightened attention to threat following violence exposure may come at the expense of encoding contextual information, which may ultimately contribute to pathological fear expressed in safe contexts.
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Caeyenberghs K, Pijnenburg M, Goossens N, Janssens L, Brumagne S. Associations between Measures of Structural Morphometry and Sensorimotor Performance in Individuals with Nonspecific Low Back Pain. AJNR Am J Neuroradiol 2017; 38:183-191. [PMID: 27884877 DOI: 10.3174/ajnr.a5020] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Accepted: 08/18/2016] [Indexed: 12/19/2022]
Abstract
BACKGROUND AND PURPOSE To date, most structural brain imaging studies in individuals with nonspecific low back pain have evaluated volumetric changes. These alterations are particularly found in sensorimotor-related areas. Although it is suggested that specific measures, such as cortical surface area and cortical thickness, reflect different underlying neural architectures, the literature regarding these different measures in individuals with nonspecific low back pain is limited. Therefore, the current study was designed to investigate the association between the performance on a sensorimotor task, more specifically the sit-to-stand-to-sit task, and cortical surface area and cortical thickness in individuals with nonspecific low back pain and healthy controls. MATERIALS AND METHODS Seventeen individuals with nonspecific low back pain and 17 healthy controls were instructed to perform 5 consecutive sit-to-stand-to-sit movements as fast as possible. In addition, T1-weighted anatomic scans of the brain were acquired and analyzed with FreeSurfer. RESULTS Compared with healthy controls, individuals with nonspecific low back pain needed significantly more time to perform 5 sit-to-stand-to-sit movements (P < .05). Brain morphometric analyses revealed that cortical thickness of the ventrolateral prefrontal cortical regions was increased in patients with nonspecific low back pain compared with controls. Furthermore, decreased cortical thickness of the rostral anterior cingulate cortex was associated with lower sit-to-stand-to-sit performance on an unstable support surface in individuals with nonspecific low back pain and healthy controls (r = -0.47, P < .007). In addition, a positive correlation was found between perceived pain intensity and cortical thickness of the superior frontal gyrus (r = 0.70, P < .002) and the pars opercularis of the inferior ventrolateral prefrontal cortex (r = 0.67, P < .004). Hence, increased cortical thickness was associated with increased levels of pain intensity in individuals with nonspecific low back pain. No associations were found between cortical surface area and the pain characteristics in this group. CONCLUSIONS The current study suggests that cortical thickness may contribute to different aspects of sit-to-stand-to-sit performance and perceived pain intensity in individuals with nonspecific low back pain.
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Affiliation(s)
- K Caeyenberghs
- From the School of Psychology (K.C.), Faculty of Health Sciences, Australian Catholic University, Sydney, New South Wales, Australia
| | - M Pijnenburg
- Department of Rehabilitation Sciences (M.P., N.G., L.J., S.B.), Katholieke Universiteit Leuven, Leuven, Belgium
| | - N Goossens
- Department of Rehabilitation Sciences (M.P., N.G., L.J., S.B.), Katholieke Universiteit Leuven, Leuven, Belgium
| | - L Janssens
- Department of Rehabilitation Sciences (M.P., N.G., L.J., S.B.), Katholieke Universiteit Leuven, Leuven, Belgium
- Hasselt University (L.J.), Biomedical Research Institute, Diepenbeek, Belgium
| | - S Brumagne
- Department of Rehabilitation Sciences (M.P., N.G., L.J., S.B.), Katholieke Universiteit Leuven, Leuven, Belgium
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Dadomo H, Grecucci A, Giardini I, Ugolini E, Carmelita A, Panzeri M. Schema Therapy for Emotional Dysregulation: Theoretical Implication and Clinical Applications. Front Psychol 2016; 7:1987. [PMID: 28066304 PMCID: PMC5177643 DOI: 10.3389/fpsyg.2016.01987] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Accepted: 12/06/2016] [Indexed: 11/13/2022] Open
Abstract
The term emotional dysregulation refers to an impaired ability to regulate unwanted emotional states. Scientific evidence supports the idea that emotional dysregulation underlies several psychological disorders as, for example: personality disorders, bipolar disorder type II, interpersonal trauma, anxiety disorders, mood disorders and post-traumatic stress disorder. Emotional dysregulation may derive from early interpersonal traumas in childhood. These early traumatic events create a persistent sensitization of the central nervous system in relation to early life stressing events. For this reason, some authors suggest a common endophenotypical origin across psychopathologies. In the last 20 years, cognitive behavioral therapy has increasingly adopted an interactive-ontogenetic view to explain the development of disorders associated to emotional dysregulation. Unfortunately, standard Cognitive Behavior Therapy (CBT) methods are not useful in treating emotional dysregulation. A CBT-derived new approach called Schema Therapy (ST), that integrates theory and techniques from psychodynamic and emotion focused therapy, holds the promise to fill this gap in cognitive literature. In this model, psychopathology is viewed as the interaction between the innate temperament of the child and the early experiences of deprivation or frustration of the subject's basic needs. This deprivation may lead to develop early maladaptive schemas (EMS), and maladaptive Modes. In the present paper we point out that EMSs and Modes are associated with either dysregulated emotions or with dysregulatory strategies that produce and maintain problematic emotional responses. Thanks to a special focus on the therapeutic relationship and emotion focused-experiential techniques, this approach successfully treats severe emotional dysregulation. In this paper, we make several comparisons between the main ideas of ST and the science of emotion regulation, and we present how to conceptualize pathological phenomena in terms of failed regulation and some of the ST strategies and techniques to foster successful regulation in patients.
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Affiliation(s)
- Harold Dadomo
- Department of Neuroscience, University of ParmaParma, Italy; Parma Schema Therapy CenterParma, Italy
| | - Alessandro Grecucci
- Clinical and Affective Neuroscience Lab, Department of Psychology and Cognitive Sciences, University of Trento Rovereto, Italy
| | | | - Erika Ugolini
- Firenze Schema Therapy Center Firenze Firenze, Italy
| | | | - Marta Panzeri
- Department of Developmental Psychology and Socialisation, Padua University Padova, Italy
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