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Foka K, Hunt H, Constantinescu S, Choudhury T, Walker TJ, Black-Dominique A, Lai D, Bhoopathy R, Sanderson O, Wray L, McAllister-Williams RH, Gallagher P, Smulders TV. Identifying the nature of episodic memory deficits in Major Depressive Disorder using a Real-World What-Where-When task. Memory 2024:1-11. [PMID: 38972048 DOI: 10.1080/09658211.2024.2371110] [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: 07/14/2023] [Accepted: 06/17/2024] [Indexed: 07/09/2024]
Abstract
ABSTRACTDeficits in episodic memory have been reported in various psychiatric conditions, including Major Depressive Disorder (MDD). Many widely used episodic memory tests do not have the ability to distinguish between impaired memory of separate components of a real-life event (e.g., what happened, where it happened and when), and impaired binding of such real-life features. To address this issue, a naturalistic, real-world What-Where-When memory task was employed to assess the nature of episodic memory impairments in MDD. A validation study established that the task is sensitive to age-related episodic memory changes, and that intentional encoding does not invalidate the task. The main study then compared the performance of patients with depression and control participants on the intentionally encoded WWW task. Patients with MDD presented an overall episodic memory impairment arising from deficits in object memory and the ability to bind objects to temporal context. Taken together, our study confirms the episodic memory impairment in MDD, by providing evidence of deficient object memory and reduced ability to bind temporal context to objects in patients. Our naturalistic WWW task presents a promising approach for thorough identification of the nature of episodic memory impairments, under a real-world environment, in various conditions, including MDD.
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Affiliation(s)
- Kyriaki Foka
- Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Hannah Hunt
- School of Psychology, Newcastle University, Newcastle upon Tyne, UK
| | - Simona Constantinescu
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Tahsina Choudhury
- Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Thomas J Walker
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | | | - Daniel Lai
- School of Psychology, Newcastle University, Newcastle upon Tyne, UK
| | - Raja Bhoopathy
- Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Olivia Sanderson
- School of Psychology, Newcastle University, Newcastle upon Tyne, UK
| | - Lauren Wray
- School of Psychology, Newcastle University, Newcastle upon Tyne, UK
| | - R Hamish McAllister-Williams
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
- Cumbria, Northumberland, Tyne and Wear NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Peter Gallagher
- School of Psychology, Newcastle University, Newcastle upon Tyne, UK
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Tom V Smulders
- School of Psychology, Newcastle University, Newcastle upon Tyne, UK
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Caldieraro MA, Laufer-Silva T, Cassano P. Dosimetry and Clinical Efficacy of Transcranial Photobiomodulation for Major Depression Disorder: Could they Guide Dosimetry for Alzheimer's Disease? J Alzheimers Dis 2021; 83:1453-1469. [PMID: 34487045 DOI: 10.3233/jad-210586] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Major depressive disorder (MDD) is prevalent and has significant impact on individuals and society. Cognitive symptoms are frequent in MDD and insufficiently treated by antidepressant medications. Transcranial photobiomodulation (t-PBM) is a novel device therapy which shows promise as an antidepressant and pro-cognitive treatment. To date, despite the encouraging results, the optimal stimulation parameters of t-PBM to treat MDD are not established, and clinical studies are very heterogeneous in terms of these parameters. While the literature provides guidance on the appropriate fluence to achieve therapeutic results, little is known on the other parameters. OBJECTIVE To evaluate the relationship between different parameters and the antidepressant effect of t-PBM. METHODS We reviewed clinical studies on MDD and on depressive symptoms comorbid with other diseases. We calculated the standardized effect size of the change in symptoms severity before and after t-PBM and we performed a descriptive analysis of the reviewed papers. RESULTS The greatest effect sizes for the antidepressant effect were found in studies using pulse-wave t-PBM with high peak irradiance (but low average irradiance) over large skin surface. One well-designed and sufficiently powered, double-blind, sham-controlled trial indicated that t-PBM with low irradiance over a small skin surface is ineffective to treat depression. CONCLUSION The use of t-PBM for Alzheimer's disease and for dementia is still at its inception; these dosimetry lessons from the use of t-PBM for depression might serve as guidance.
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Affiliation(s)
- Marco Antonio Caldieraro
- Centro de Pesquisa Experimental (CPE) e Centro de Pesquisa Clínica (CPC), Hospital de Clínicas de Porto Alegre (HCPA), Porto Alegre -RS, Brasil.,Universidade Federal do Rio Grande do Sul, Faculdade de Medicina, Departamento de Psiquiatria e Medicina Legal, Programa de Pós-Graduação em Psiquiatria e Ciências do Comportamento, Porto Alegre -RS, Brasil
| | - Tatiana Laufer-Silva
- Centro de Pesquisa Experimental (CPE) e Centro de Pesquisa Clínica (CPC), Hospital de Clínicas de Porto Alegre (HCPA), Porto Alegre -RS, Brasil.,Universidade Federal do Rio Grande do Sul, Faculdade de Medicina, Departamento de Psiquiatria e Medicina Legal, Programa de Pós-Graduação em Psiquiatria e Ciências do Comportamento, Porto Alegre -RS, Brasil
| | - Paolo Cassano
- Harvard Medical School, Boston, MA, USA.,MGH Division of Neuropsychiatry, Massachusetts General Hospital, Boston, MA, USA
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Major depressive disorder and schizophrenia are associated with a disturbed experience of temporal memory. JOURNAL OF AFFECTIVE DISORDERS REPORTS 2020. [DOI: 10.1016/j.jadr.2020.100049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Antidepressants upregulate c-Fos expression in the lateral entorhinal cortex and hippocampal dorsal subiculum: Study in rats. Brain Res Bull 2019; 153:102-108. [DOI: 10.1016/j.brainresbull.2019.08.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 08/17/2019] [Accepted: 08/19/2019] [Indexed: 12/17/2022]
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de Lima DB, Trapp A, Corrêa MS, Giacobbo BL, de Lima Argimon II, Bromberg E. Episodic memory boosting in older adults: exploring the association of encoding strategies and physical activity. Aging Ment Health 2019; 23:1218-1226. [PMID: 30588835 DOI: 10.1080/13607863.2018.1481924] [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] [Indexed: 10/27/2022]
Abstract
Background: Contextual memory is susceptible to the effects of aging and its impairment compromises episodic memories and quality of life in older adults. Objective: Compare the effects of cognitive support on incidental contextual memory free recall and recognition with a naturalistic experimental paradigm and explore the association of encoding strategies and physical activity on memory improvement. Methods: Subjects (≥60 years, n = 52) were assigned to one of two encoding conditions for the contextual memory task: with or without an incidental associative instruction to encourage association of an item to its spatial context. Immediate free recall and recognition tests were run to assess the encoding instruction efficiency. The association of memory performance and physical activity was analyzed using the scores on the International Physical Activity Questionnaire (IPAQ) to subdivide each experimental group into Low IPAQ (below median) and High IPAQ (above median) subgroups. Results: The associative encoding instruction increased contextual memory free recall and recognition, with greater effects on free recall. The most robust associations between physical activity and contextual memory were also seen on free recall, in which higher levels of physical activity corresponded to increased baseline performance (non-associative encoding condition) and greater improvement of memory by the encoding support (associative encoding condition). Conclusion: Cognitive support at encoding can improve contextual memory free recall and recognition, suggesting they are prone to rehabilitation. Moreover, higher physical activity levels were positively associated with encoding strategies on contextual memory improvement, increasing the availability of latent process-based components of the cognitive reserve.
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Affiliation(s)
- Daiane Borba de Lima
- a Neurobiology and Developmental Biology Laboratory , Pontifical Catholic University of Rio Grande do Sul , Porto Alegre , RS , Brazil.,b Graduate Program in Cellular and Molecular Biology , Pontifical Catholic University of Rio Grande do Sul , Porto Alegre , RS , Brazil
| | - Artur Trapp
- a Neurobiology and Developmental Biology Laboratory , Pontifical Catholic University of Rio Grande do Sul , Porto Alegre , RS , Brazil
| | - Márcio Silveira Corrêa
- a Neurobiology and Developmental Biology Laboratory , Pontifical Catholic University of Rio Grande do Sul , Porto Alegre , RS , Brazil
| | - Bruno Lima Giacobbo
- a Neurobiology and Developmental Biology Laboratory , Pontifical Catholic University of Rio Grande do Sul , Porto Alegre , RS , Brazil.,b Graduate Program in Cellular and Molecular Biology , Pontifical Catholic University of Rio Grande do Sul , Porto Alegre , RS , Brazil
| | - Irani Iracema de Lima Argimon
- c Institute of Geriatrics and Gerontology , Pontifical Catholic University of Rio Grande do Sul , Porto Alegre , RS , Brazil
| | - Elke Bromberg
- a Neurobiology and Developmental Biology Laboratory , Pontifical Catholic University of Rio Grande do Sul , Porto Alegre , RS , Brazil.,b Graduate Program in Cellular and Molecular Biology , Pontifical Catholic University of Rio Grande do Sul , Porto Alegre , RS , Brazil.,c Institute of Geriatrics and Gerontology , Pontifical Catholic University of Rio Grande do Sul , Porto Alegre , RS , Brazil.,d National Institute of Science and Technology for Translational Medicine (INCT-TM) , Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) , Brasília , Brazil
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6
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Corrêa MS, Giacobbo BL, Vedovelli K, de Lima DB, Ferrari P, Argimon IIDL, Walz JC, Bromberg E. Age Effects on Cognitive and Physiological Parameters in Familial Caregivers of Alzheimer's Disease Patients. PLoS One 2016; 11:e0162619. [PMID: 27706235 PMCID: PMC5051952 DOI: 10.1371/journal.pone.0162619] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 08/25/2016] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVES Older familial caregivers of Alzheimer's disease patients are subjected to stress-related cognitive and psychophysiological dysfunctions that may affect their quality of life and ability to provide care. Younger caregivers have never been properly evaluated. We hypothesized that they would show qualitatively similar cognitive and psychophysiological alterations to those of older caregivers. METHOD The cognitive measures of 17 young (31-58 years) and 18 old (63-84 years) caregivers and of 17 young (37-57 years) and 18 old (62-84 years) non-caregiver controls were evaluated together with their salivary cortisol and dehydroepiandrosterone (DHEA) levels, as measured by radioimmunoassays and ELISA assays of brain-derived neurotrophic factor (BDNF) in serum. RESULTS Although younger caregivers had milder impairments in memory and executive functions than older caregivers, their performances fell to the same or lower levels as those of the healthy older controls. Decreases in DHEA and BDNF levels were correlated with the cognitive dysfunctions observed in the older and younger caregivers, respectively. Cortisol at 10PM increased in both caregiver groups. DISCUSSION Younger caregivers were prone to cognitive impairments similar to older caregivers, although the degree and the neuropsychological correlates of the cognitive dysfunctions were somewhat different between the two groups. This work has implications for caregiver and care-recipient health and for research on the neurobiology of stress-related cognitive dysfunctions.
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Affiliation(s)
- Márcio Silveira Corrêa
- Laboratório de Biologia e Desenvolvimento do Sistema Nervoso, Faculdade de Biociências, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
- Programa de Pós-Graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
- Instituto Nacional Ciência e Tecnologia—Medicina Translacional (INCT-TM), RS, Brazil
| | - Bruno Lima Giacobbo
- Laboratório de Biologia e Desenvolvimento do Sistema Nervoso, Faculdade de Biociências, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
- Programa de Pós-Graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
- Instituto Nacional Ciência e Tecnologia—Medicina Translacional (INCT-TM), RS, Brazil
| | - Kelem Vedovelli
- Laboratório de Biologia e Desenvolvimento do Sistema Nervoso, Faculdade de Biociências, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
- Instituto de Geriatria e Gerontologia, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
- Instituto Nacional Ciência e Tecnologia—Medicina Translacional (INCT-TM), RS, Brazil
| | - Daiane Borba de Lima
- Laboratório de Biologia e Desenvolvimento do Sistema Nervoso, Faculdade de Biociências, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
- Programa de Pós-Graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
- Instituto Nacional Ciência e Tecnologia—Medicina Translacional (INCT-TM), RS, Brazil
| | - Pamela Ferrari
- Laboratório de Psiquiatria Molecular, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil
- Instituto Nacional Ciência e Tecnologia—Medicina Translacional (INCT-TM), RS, Brazil
| | - Irani Iracema de Lima Argimon
- Instituto de Geriatria e Gerontologia, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Julio Cesar Walz
- Laboratório de Psiquiatria Molecular, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil
- Instituto Nacional Ciência e Tecnologia—Medicina Translacional (INCT-TM), RS, Brazil
- Faculdade Unilasalle, Canoas, RS, Brazil
| | - Elke Bromberg
- Laboratório de Biologia e Desenvolvimento do Sistema Nervoso, Faculdade de Biociências, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
- Programa de Pós-Graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
- Instituto de Geriatria e Gerontologia, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
- Instituto Nacional Ciência e Tecnologia—Medicina Translacional (INCT-TM), RS, Brazil
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van Rooij SJH, Stevens JS, Ely TD, Fani N, Smith AK, Kerley KA, Lori A, Ressler KJ, Jovanovic T. Childhood Trauma and COMT Genotype Interact to Increase Hippocampal Activation in Resilient Individuals. Front Psychiatry 2016; 7:156. [PMID: 27683563 PMCID: PMC5021680 DOI: 10.3389/fpsyt.2016.00156] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Accepted: 08/29/2016] [Indexed: 01/10/2023] Open
Abstract
Both childhood trauma and a functional catechol-O-methyltransferase (COMT) genetic polymorphism have been associated with posttraumatic stress disorder (PTSD) and depression; however, it is still unclear whether the two interact and how this interaction relates to long-term risk or resilience. Imaging and genotype data were collected on 73 highly traumatized women. DNA extracted from saliva was used to determine COMT genotype (Val/Val, n = 38, Met carriers, n = 35). Functional MRI data were collected during a Go/NoGo task to investigate the neurocircuitry underlying response inhibition. Self-report measures of adult and childhood trauma exposure, PTSD and depression symptom severity, and resilience were collected. Childhood trauma was found to interact with COMT genotype to impact inhibition-related hippocampal activation. In Met carriers, more childhood trauma was associated with decreased hippocampal activation, whereas in the Val/Val group childhood trauma was related to increased hippocampal activation. Second, hippocampal activation correlated negatively with PTSD and depression symptoms and positively with trait resilience. Moreover, hippocampal activation mediated the relationship between childhood trauma and psychiatric risk or resilience in the Val/Val, but not in the Met carrier group. These data reveal a potential mechanism by which childhood trauma and COMT genotype interact to increase risk for trauma-related psychopathology or resilience. Hippocampal recruitment during inhibition may improve the ability to use contextual information to guide behavior, thereby enhancing resilience in trauma-exposed individuals. This finding may contribute to early identification of individuals at risk and suggests a mechanism that can be targeted in future studies aiming to prevent or limit negative outcomes.
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Affiliation(s)
- Sanne J H van Rooij
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine , Atlanta, GA , USA
| | - Jennifer S Stevens
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine , Atlanta, GA , USA
| | - Timothy D Ely
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine , Atlanta, GA , USA
| | - Negar Fani
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine , Atlanta, GA , USA
| | - Alicia K Smith
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine , Atlanta, GA , USA
| | - Kimberly A Kerley
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine , Atlanta, GA , USA
| | - Adriana Lori
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine , Atlanta, GA , USA
| | - Kerry J Ressler
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, GA, USA; McLean Hospital, Department of Psychiatry, Harvard Medical School, Belmont, MA, USA
| | - Tanja Jovanovic
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine , Atlanta, GA , USA
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8
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Corrêa M, Vedovelli K, Giacobbo B, de Souza C, Ferrari P, de Lima Argimon I, Walz J, Kapczinski F, Bromberg E. Psychophysiological correlates of cognitive deficits in family caregivers of patients with Alzheimer Disease. Neuroscience 2015; 286:371-82. [DOI: 10.1016/j.neuroscience.2014.11.052] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Revised: 11/19/2014] [Accepted: 11/25/2014] [Indexed: 12/19/2022]
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9
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Corrêa MS, da Silveira EMS, de Lima DB, Balardin JB, Walz JC, Kapczinski F, Bromberg E. The role of encoding strategies in contextual memory deficits in patients with bipolar disorder. Neuropsychol Rehabil 2014; 25:122-36. [PMID: 25300497 DOI: 10.1080/09602011.2014.969281] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Contextual memory is important for the encoding and retrieval of episodic memory, which is often impaired in euthymic patients with bipolar disorder (BD). The objective was to investigate the effect of low and high cognitive support on encoding in an incidental contextual memory task in euthymic patients with BD. Twenty-three patients with a BD type I diagnosis (aged 23-63 years, 17 women and 6 men) and 29 healthy controls completed a recognition memory task for context (location of a recognised object). Participants were assigned to one of two incidental encoding conditions: (1) with a binding cue to encourage the association of the object to its location (judging the degree of appropriateness of an object in relation to its location) or (2) without a binding cue (judging daily use of objects). Patients showed a deficit in incidental contextual memory in the absence of a binding cue at encoding. Under incidental encoding with the binding cue, no differences were observed between the groups for contextual memory. Contextual memory deficits in BD patients were reduced by providing cognitive support at encoding. The role of this strategy should be investigated in larger samples to evaluate its use for cognitive remediation in BD patients.
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Affiliation(s)
- Márcio Silveira Corrêa
- a Neurobiology and Developmental Biology Laboratory, Faculty of Biosciences , Pontifical Catholic University , Porto Alegre , RS , Brazil
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Telch MJ, Bruchey AK, Rosenfield D, Cobb AR, Smits J, Pahl S, Gonzalez-Lima F. Effects of post-session administration of methylene blue on fear extinction and contextual memory in adults with claustrophobia. Am J Psychiatry 2014; 171:1091-8. [PMID: 25018057 PMCID: PMC4467026 DOI: 10.1176/appi.ajp.2014.13101407] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE Preclinical studies have shown that low-dose methylene blue increases mitochondrial cytochrome oxidase activity in the brain and improves memory retention after learning tasks, including fear extinction. The authors report on the first controlled experiment to examine the memory-enhancing effects of posttraining methylene blue administration on retention of fear extinction and contextual memory following fear extinction training. METHOD Adult participants displaying marked claustrophobic fear were randomly assigned to double-blind administration of 260 mg of methylene blue (N=23) or administration of placebo (N=19) immediately following six 5-minute extinction trials in an enclosed chamber. Retesting occurred 1 month later to assess fear renewal as indexed by peak fear during exposure to a nontraining chamber, with the prediction that the effects of methylene blue would vary as a function of fear reduction achieved during extinction training. Incidental contextual memory was assessed 1 and 30 days after training to assess the cognitive-enhancing effects of methylene blue independent of its effects on fear attenuation. RESULTS Consistent with predictions, participants displaying low end fear posttraining showed significantly less fear at the 1-month follow-up if they received methylene blue posttraining compared with placebo. In contrast, participants displaying moderate to high levels of posttraining fear tended to fare worse at the follow-up if they received methylene blue posttraining. Methylene blue's enhancement of contextual memory was unrelated to initial or posttraining claustrophobic fear. CONCLUSIONS Methylene blue enhances memory and the retention of fear extinction when administered after a successful exposure session but may have a deleterious effect on extinction when administered after an unsuccessful exposure session.
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Affiliation(s)
- Michael J. Telch
- Department of Psychology, University of Texas at Austin, Austin, Texas
| | | | - David Rosenfield
- Department of Psychology, Southern Methodist University, Dallas, Texas
| | - Adam R. Cobb
- Department of Psychology, University of Texas at Austin, Austin, Texas
| | - Jasper Smits
- Department of Psychology, University of Texas at Austin, Austin, Texas
| | - Sandra Pahl
- Department of Psychology, University of Texas at Austin, Austin, Texas
| | - F. Gonzalez-Lima
- Department of Psychology, University of Texas at Austin, Austin, Texas,Department of Pharmacology and Toxicology, University of Texas at Austin, Austin, Texas
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Sripada RK, Marx CE, King AP, Rajaram N, Garfinkel SN, Abelson JL, Liberzon I. DHEA enhances emotion regulation neurocircuits and modulates memory for emotional stimuli. Neuropsychopharmacology 2013; 38:1798-807. [PMID: 23552182 PMCID: PMC3717538 DOI: 10.1038/npp.2013.79] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2012] [Revised: 02/17/2013] [Accepted: 03/27/2013] [Indexed: 12/31/2022]
Abstract
Dehydroepiandrosterone (DHEA) is a neurosteroid with anxiolytic, antidepressant, and antiglucocorticoid properties. It is endogenously released in response to stress, and may reduce negative affect when administered exogenously. Although there have been multiple reports of DHEA's antidepressant and anxiolytic effects, no research to date has examined the neural pathways involved. In particular, brain imaging has not been used to link neurosteroid effects to emotion neurocircuitry. To investigate the brain basis of DHEA's impact on emotion modulation, patients were administered 400 mg of DHEA (N=14) or placebo (N=15) and underwent 3T fMRI while performing the shifted-attention emotion appraisal task (SEAT), a test of emotional processing and regulation. Compared with placebo, DHEA reduced activity in the amygdala and hippocampus, enhanced connectivity between the amygdala and hippocampus, and enhanced activity in the rACC. These activation changes were associated with reduced negative affect. DHEA reduced memory accuracy for emotional stimuli, and also reduced activity in regions associated with conjunctive memory encoding. These results demonstrate that DHEA reduces activity in regions associated with generation of negative emotion and enhances activity in regions linked to regulatory processes. Considering that activity in these regions is altered in mood and anxiety disorders, our results provide initial neuroimaging evidence that DHEA may be useful as a pharmacological intervention for these conditions and invite further investigation into the brain basis of neurosteroid emotion regulatory effects.
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Affiliation(s)
- Rebecca K Sripada
- Department of Psychiatry, University of Michigan, Ann Arbor, MI 48109, USA.
| | - Christine E Marx
- Department of Psychiatry, Duke University, Durham, NC, USA,Durham VA Medical Center, Durham, NC, USA
| | - Anthony P King
- Department of Psychiatry, University of Michigan, Ann Arbor, MI, USA,Ann Arbor VA Medical Center, Ann Arbor, MI, USA
| | - Nirmala Rajaram
- Department of Psychiatry, University of Michigan, Ann Arbor, MI, USA,Ann Arbor VA Medical Center, Ann Arbor, MI, USA
| | - Sarah N Garfinkel
- Department of Psychiatry, Brighton and Sussex Medical School, University of Sussex, Falmer, UK
| | - James L Abelson
- Department of Psychiatry, University of Michigan, Ann Arbor, MI, USA
| | - Israel Liberzon
- Department of Psychiatry, University of Michigan, Ann Arbor, MI, USA,Department of Psychology, University of Michigan, Ann Arbor, MI, USA,Ann Arbor VA Medical Center, Ann Arbor, MI, USA
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Goeldner C, Ballard TM, Knoflach F, Wichmann J, Gatti S, Umbricht D. Cognitive impairment in major depression and the mGlu2 receptor as a therapeutic target. Neuropharmacology 2012; 64:337-46. [PMID: 22992331 DOI: 10.1016/j.neuropharm.2012.08.001] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2012] [Accepted: 08/03/2012] [Indexed: 12/14/2022]
Abstract
Cognitive impairment, in particular of attention and memory, is often reported by patients suffering from major depressive disorder (MDD) and deficits in attention are part of the current diagnostic criteria of MDD. Objectively measured cognitive deficits associated with MDD have been described in many studies. They have been conceptualized as an integral facet and epiphenomenon of MDD. However, evidence accumulated in recent years has challenged this notion and demonstrated that in a subset of patients the degree of cognitive deficits cannot be accounted for by the severity of depression. In addition, in some patients cognitive deficits persist despite resolution of depressive symptomatology. It is plausible to assume that cognitive deficits contribute to functional impairment even though supportive data for such a relationship are lacking. However, the exact association between cognitive deficits and major depression and the clinical and neurobiological characteristics of patients with MDD in whom cognitive deficits seem partially or fully independent of the clinical manifestation of depressive symptoms remain poorly understood. This review focuses on objective measures of non-emotional cognitive deficits in MDD and discusses the presence of a subgroup of patients in whom these symptoms can be defined independently and in dissociation from the rest of the depressive symptomatology. The current understanding of brain circuits and molecular events implicated in cognitive impairment in MDD are discussed with an emphasis on the missing elements that could further define the specificity of cognitive impairment in MDD and lead to new therapeutics. Furthermore, this article presents in detail observations made in behavioral studies in rodents with potential novel therapeutic agents, such as negative allosteric modulators at the metabotropic glutamate receptor type 2/3 (mGlu2/3 NAM) which exhibit both cognitive enhancing and antidepressant properties. Such a compound, RO4432717, was tested in tests of short term memory (delayed match to position), cognitive flexibility (Morris water maze, reversal protocol), impulsivity and compulsivity (5-choice serial reaction time) and spontaneous object recognition in rodents, providing first evidence of a profile potentially relevant to address cognitive impairment in MDD. This article is part of a Special Issue entitled 'Cognitive Enhancers'.
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Affiliation(s)
- Celia Goeldner
- Building 74, Room 3W.209 F. Hoffmann-La Roche AG, DTA CNS, Pharma Research & Early Development, Grenzacherstrasse 124, CH4070 Basel, Switzerland
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Levy-Gigi E, Vakil E. The dual effect of context on memory of related and unrelated themes: discrimination at encoding and cue at retrieval. Memory 2012; 20:728-41. [PMID: 22809325 DOI: 10.1080/09658211.2012.701632] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
The influence of contextual factors on encoding and retrieval in recognition memory was investigated using a retroactive interference paradigm. Participants were randomly assigned to four context conditions constructed by manipulating types of presentation modality (pictures vs words) for study, interference, and test stages, respectively (ABA, ABB, AAA, & AAB). In Experiment 1 we presented unrelated items in the study and interference stages, while in Experiment 2 each stage contained items from the same semantic category. The results demonstrate a dual role for context in memory processes-at encoding as well as at retrieval. In Experiment 1 there is a hierarchical order between the four context conditions, depending on both target-test and target-interference contextual similarity. Adding a categorical context in Experiment 2 helped to specify each list and therefore better distinguish between target and interferer information, and in some conditions compensated for their perceptual similarity.
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Affiliation(s)
- Einat Levy-Gigi
- Department of Psychology, Bar-Ilan University, Ramat-Gan, Israel.
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