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Sagalajev B, Lennartz L, Vieth L, Gunawan CT, Neumaier B, Drzezga A, Visser-Vandewalle V, Endepols H, Sesia T. TgF344-AD Rat Model of Alzheimer's Disease: Spatial Disorientation and Asymmetry in Hemispheric Neurodegeneration. J Alzheimers Dis Rep 2023; 7:1085-1094. [PMID: 37849636 PMCID: PMC10578321 DOI: 10.3233/adr-230038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 08/22/2023] [Indexed: 10/19/2023] Open
Abstract
Background The TgF344-AD ratline represents a transgenic animal model of Alzheimer's disease. We previously reported spatial memory impairment in TgF344-AD rats, yet the underlying mechanism remained unknown. We, therefore, set out to determine if spatial memory impairment in TgF344-AD rats is attributed to spatial disorientation. Also, we aimed to investigate whether TgF344-AD rats exhibit signs of asymmetry in hemispheric neurodegeneration, similar to what is reported in spatially disoriented AD patients. Finally, we sought to examine how spatial disorientation correlates with working memory performance. Methods TgF344-AD rats were divided into two groups balanced by sex and genotype. The first group underwent the delayed match-to-sample (DMS) task for the assessment of spatial orientation and working memory, while the second group underwent positron emission tomography (PET) for the assessment of glucose metabolism and microglial activity as in-vivo markers of neurodegeneration. Rats were 13 months old during DMS training and 14-16 months old during DMS testing and PET. Results In the DMS task, TgF344-AD rats were more likely than their wild-type littermates to display strong preference for one of the two levers, preventing working memory testing. Rats without lever-preference showed similar working memory, regardless of their genotype. PET revealed hemispherically asymmetric clusters of increased microglial activity and altered glucose metabolism in TgF344-AD rats. Conclusions TgF344-AD rats display spatial disorientation and hemispherically asymmetrical neurodegeneration, suggesting a potential causal relationship consistent with past clinical research. In rats with preserved spatial orientation, working memory remains intact.
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Affiliation(s)
- Boriss Sagalajev
- University of Cologne, Faculty of Medicine and University Hospital Cologne, Department of Stereotactic and Functional Neurosurgery, Cologne, Germany
- European Graduate School of Neuroscience (EURON), Maastricht, Netherlands
| | - Lina Lennartz
- University of Cologne, Faculty of Medicine and University Hospital Cologne, Department of Stereotactic and Functional Neurosurgery, Cologne, Germany
- European Graduate School of Neuroscience (EURON), Maastricht, Netherlands
| | - Lukas Vieth
- University of Cologne, Faculty of Medicine and University Hospital Cologne, Institute of Radiochemistry and Experimental Molecular Imaging, Cologne, Germany
- Forschungszentrum Jülich GmbH, Institute of Neuroscience and Medicine, Nuclear Chemistry (INM-5), Jülich, Germany
| | - Cecilia Tasya Gunawan
- University of Cologne, Faculty of Medicine and University Hospital Cologne, Department of Stereotactic and Functional Neurosurgery, Cologne, Germany
- European Graduate School of Neuroscience (EURON), Maastricht, Netherlands
| | - Bernd Neumaier
- University of Cologne, Faculty of Medicine and University Hospital Cologne, Institute of Radiochemistry and Experimental Molecular Imaging, Cologne, Germany
- Forschungszentrum Jülich GmbH, Institute of Neuroscience and Medicine, Nuclear Chemistry (INM-5), Jülich, Germany
| | - Alexander Drzezga
- University of Cologne, Faculty of Medicine and University Hospital Cologne, Department of Nuclear Medicine, Cologne, Germany
- Forschungszentrum Jülich GmbH, Institute of Neuroscience and Medicine, Molecular Organization of the Brain (INM-2), Jülich, Germany
| | - Veerle Visser-Vandewalle
- University of Cologne, Faculty of Medicine and University Hospital Cologne, Department of Stereotactic and Functional Neurosurgery, Cologne, Germany
- European Graduate School of Neuroscience (EURON), Maastricht, Netherlands
| | - Heike Endepols
- University of Cologne, Faculty of Medicine and University Hospital Cologne, Institute of Radiochemistry and Experimental Molecular Imaging, Cologne, Germany
- Forschungszentrum Jülich GmbH, Institute of Neuroscience and Medicine, Nuclear Chemistry (INM-5), Jülich, Germany
- University of Cologne, Faculty of Medicine and University Hospital Cologne, Department of Nuclear Medicine, Cologne, Germany
| | - Thibaut Sesia
- University of Cologne, Faculty of Medicine and University Hospital Cologne, Department of Stereotactic and Functional Neurosurgery, Cologne, Germany
- European Graduate School of Neuroscience (EURON), Maastricht, Netherlands
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Sesia T, Wenzel JM, Sagalajev B, Jahanshahi A, Visser-Vandewalle V. Editorial: Animal models of neuropsychiatric disorders: validity, strengths, and limitations. Front Behav Neurosci 2023; 17:1200068. [PMID: 37250186 PMCID: PMC10213662 DOI: 10.3389/fnbeh.2023.1200068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 04/17/2023] [Indexed: 05/31/2023] Open
Affiliation(s)
- Thibaut Sesia
- Department of Stereotactic and Functional Neurosurgery, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
- European Graduate School of Neuroscience (EURON), Maastricht, Netherlands
| | - Jennifer M. Wenzel
- Department of Psychological Sciences, University of San Diego, San Diego, CA, United States
| | - Boriss Sagalajev
- Department of Stereotactic and Functional Neurosurgery, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
- European Graduate School of Neuroscience (EURON), Maastricht, Netherlands
| | - Ali Jahanshahi
- European Graduate School of Neuroscience (EURON), Maastricht, Netherlands
- Department of Neurosurgery, Maastricht University Medical Center, Maastricht, Netherlands
| | - Veerle Visser-Vandewalle
- Department of Stereotactic and Functional Neurosurgery, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
- European Graduate School of Neuroscience (EURON), Maastricht, Netherlands
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3
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Blokland A, Sesia T. Delay-dependent forgetting in object recognition and object location test is dependent on strain and test. Behav Brain Res 2023; 437:114161. [PMID: 36257558 DOI: 10.1016/j.bbr.2022.114161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 10/01/2022] [Accepted: 10/12/2022] [Indexed: 11/06/2022]
Abstract
The object recognition and object location task (ORT and OLT, respectively) have been applied in preclinical research to evaluate the effects of treatments on memory. Although both tasks look quite similar, they differ with respect to the brain structures involved in the memory performance. The characterization of the memory performance in both tasks is important to understand treatment effects. Since there are no previous studies that compared strain differences in delay-dependent forgetting in both tasks, Wistar and Long Evans rats were tested in both the ORT and the OLT at different intervals. The data showed that in the ORT the delay-dependent forgetting was similar for Wistar and Long Evans rats. However, the forgetting curve was different for both strains in the OLT: the Long Evans rats the forgetting took a longer interval. This study indicates that delay-dependent forgetting in the ORT and OLT is strain and test dependent. It is suggested that before testing treatments the forgetting curve of a specific strain should be tested in this type of tasks.
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Affiliation(s)
- Arjan Blokland
- Faculty of Psychology and Neuroscience, Department of Neuropsychology & Psychopharmacology, EURON, Maastricht University, the Netherlands; European Graduate School of Neuroscience (EURON), the Netherlands.
| | - Thibaut Sesia
- Department of Stereotactic and Functional Neurosurgery, University Hospital Cologne, Cologne, Germany; European Graduate School of Neuroscience (EURON), the Netherlands
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4
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Koulousakis P, van den Hove D, Visser-Vandewalle V, Sesia T. Cognitive Improvements After Intermittent Deep Brain Stimulation of the Nucleus Basalis of Meynert in a Transgenic Rat Model for Alzheimer's Disease: A Preliminary Approach. J Alzheimers Dis 2020; 73:461-466. [PMID: 31868670 DOI: 10.3233/jad-190919] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Deep brain stimulation (DBS) of the nucleus basalis of Meynert (NBM) has been shown to exert promising therapeutical effects in a pilot study with patients suffering from Alzheimer's disease (AD). We aimed at comparing the cognitive effects of intermittent and continuous NBM stimulation paradigms in an animal model for AD. In this exploratory study, aged Tgf344-AD rats were behaviorally tested pre-, and post implantation, while being stimulated with unilateral- or bilateral-intermittent and bilateral-continuous patterns. Bilateral-intermittent NBM DBS lead to supernormal performance in a spatial memory task. These findings suggest that NBM DBS could be further refined, thereby improving patient care.
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Affiliation(s)
- Philippos Koulousakis
- Department of Stereotactic and Functional Neurosurgery, University Hospital Cologne, Cologne, Germany.,European Graduate School of Neuroscience (EURON), AZ, Maastricht, The Netherlands.,Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience (MHeNs), Maastricht University, Maastricht, The Netherlands
| | - Daniel van den Hove
- Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience (MHeNs), Maastricht University, Maastricht, The Netherlands.,Department of Psychiatry, Division of Molecular Psychiatry, Laboratory of Translational Neuroscience, Center of Mental Health, University of Würzburg, Würzburg, Germany
| | - Veerle Visser-Vandewalle
- Department of Stereotactic and Functional Neurosurgery, University Hospital Cologne, Cologne, Germany.,European Graduate School of Neuroscience (EURON), AZ, Maastricht, The Netherlands
| | - Thibaut Sesia
- Department of Stereotactic and Functional Neurosurgery, University Hospital Cologne, Cologne, Germany.,European Graduate School of Neuroscience (EURON), AZ, Maastricht, The Netherlands
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5
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Koulousakis P, Andrade P, Visser-Vandewalle V, Sesia T. The Nucleus Basalis of Meynert and Its Role in Deep Brain Stimulation for Cognitive Disorders: A Historical Perspective. J Alzheimers Dis 2020; 69:905-919. [PMID: 31104014 DOI: 10.3233/jad-180133] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The nucleus basalis of Meynert (nbM) was first described at the end of the 19th century and named after its discoverer, Theodor Meynert. The nbM contains a large population of cholinergic neurons that project their axons to the entire cortical mantle, the olfactory tubercle, and the amygdala. It has been functionally associated with the control of attention and maintenance of arousal, both key functions for appropriate learning and memory formation. This structure is well-conserved across vertebrates, although its degree of organization varies between species. Since early in the investigation of its functional and pathological significance, its degeneration has been linked to various major neuropsychiatric disorders. For instance, Lewy bodies, a hallmark in the diagnosis of Parkinson's disease, were originally described in the nbM. Since then, its involvement in other Lewy body and dementia-related disorders has been recognized. In the context of recent positive outcomes following nbM deep brain stimulation in subjects with dementia-associated disorders, we review the literature from an historical perspective focusing on how the nbM came into focus as a promising therapeutic option for patients with Alzheimer's disease. Moreover, we will discuss what is needed to further develop and widely implement this approach as well as examine novel medical indications for which nbM deep brain stimulation may prove beneficial.
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Affiliation(s)
- Philippos Koulousakis
- Department of Stereotactic and Functional Neurosurgery, University Hospital of Cologne, Germany.,European Graduate School of Neuroscience, Maastricht, The Netherlands
| | - Pablo Andrade
- Department of Neurosurgery, University Hospital of Cologne, Germany.,European Graduate School of Neuroscience, Maastricht, The Netherlands
| | - Veerle Visser-Vandewalle
- Department of Stereotactic and Functional Neurosurgery, University Hospital of Cologne, Germany.,European Graduate School of Neuroscience, Maastricht, The Netherlands
| | - Thibaut Sesia
- Department of Stereotactic and Functional Neurosurgery, University Hospital of Cologne, Germany.,European Graduate School of Neuroscience, Maastricht, The Netherlands
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6
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Zlebnik NE, Gildish I, Sesia T, Fitoussi A, Cole EA, Carson BP, Cachope R, Cheer JF. Motivational Impairment is Accompanied by Corticoaccumbal Dysfunction in the BACHD-Tg5 Rat Model of Huntington's Disease. Cereb Cortex 2019; 29:4763-4774. [PMID: 30753343 DOI: 10.1093/cercor/bhz009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2018] [Revised: 12/19/2018] [Accepted: 01/14/2019] [Indexed: 11/14/2022] Open
Abstract
Neuropsychiatric symptoms, such as avolition, apathy, and anhedonia, precede the onset of debilitating motor symptoms in Huntington's disease (HD), and their development may give insight into early disease progression and treatment. However, the neuronal and circuit mechanisms of premanifest HD pathophysiology are not well-understood. Here, using a transgenic rat model expressing the full-length human mutant HD gene, we find early and profound deficits in reward motivation in the absence of gross motor abnormalities. These deficits are accompanied by significant and progressive dysfunction in corticostriatal processing and communication among brain areas critical for reward-driven behavior. Together, our results define early corticostriatal dysfunction as a possible pathogenic contributor to psychiatric disturbances and may help identify potential pharmacotherapeutic targets for the treatment of HD.
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Affiliation(s)
- Natalie E Zlebnik
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, 20 Penn St., Baltimore, MD, USA
| | - Iness Gildish
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, 20 Penn St., Baltimore, MD, USA
| | - Thibaut Sesia
- Department of Stereotaxy and Functional Neurosurgery, University Hospital of Cologne, Kerpener Str. 62 Cologne, Germany
| | - Aurelie Fitoussi
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, 20 Penn St., Baltimore, MD, USA
| | - Ellen A Cole
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, 20 Penn St., Baltimore, MD, USA
| | - Brian P Carson
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, 20 Penn St., Baltimore, MD, USA
| | - Roger Cachope
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, 20 Penn St., Baltimore, MD, USA.,CHDI Foundation, 6080 Center Drive, Suite 700, Los Angeles, CA, USA
| | - Joseph F Cheer
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, 20 Penn St., Baltimore, MD, USA.,Department of Psychiatry, University of Maryland School of Medicine, 20 Penn St., Baltimore, MD, USA
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7
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Seeber M, Cantonas LM, Hoevels M, Sesia T, Visser-Vandewalle V, Michel CM. Subcortical electrophysiological activity is detectable with high-density EEG source imaging. Nat Commun 2019; 10:753. [PMID: 30765707 PMCID: PMC6376013 DOI: 10.1038/s41467-019-08725-w] [Citation(s) in RCA: 134] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Accepted: 01/28/2019] [Indexed: 11/09/2022] Open
Abstract
Subcortical neuronal activity is highly relevant for mediating communication in large-scale brain networks. While electroencephalographic (EEG) recordings provide appropriate temporal resolution and coverage to study whole brain dynamics, the feasibility to detect subcortical signals is a matter of debate. Here, we investigate if scalp EEG can detect and correctly localize signals recorded with intracranial electrodes placed in the centromedial thalamus, and in the nucleus accumbens. Externalization of deep brain stimulation (DBS) electrodes, placed in these regions, provides the unique opportunity to record subcortical activity simultaneously with high-density (256 channel) scalp EEG. In three patients during rest with eyes closed, we found significant correlation between alpha envelopes derived from intracranial and EEG source reconstructed signals. Highest correlation was found for source signals in close proximity to the actual recording sites, given by the DBS electrode locations. Therefore, we present direct evidence that scalp EEG indeed can sense subcortical signals. Electroencephalography (EEG) allows the measurement of electrical signals associated with brain activity, but it is unclear if EEG can accurately measure subcortical activity. Here, the authors show that source dynamics, reconstructed from scalp EEG, correlate with activity recorded from human thalamus and nucleus accumbens.
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Affiliation(s)
- Martin Seeber
- Functional Brain Mapping Laboratory, Department of Fundamental Neurosciences, Campus Biotech, University of Geneva, 1201, Geneva, Switzerland
| | - Lucia-Manuela Cantonas
- Functional Brain Mapping Laboratory, Department of Fundamental Neurosciences, Campus Biotech, University of Geneva, 1201, Geneva, Switzerland
| | - Mauritius Hoevels
- Department of Stereotactic and Functional Neurosurgery, University of Cologne, 50937, Cologne, Germany
| | - Thibaut Sesia
- Department of Stereotactic and Functional Neurosurgery, University of Cologne, 50937, Cologne, Germany
| | - Veerle Visser-Vandewalle
- Department of Stereotactic and Functional Neurosurgery, University of Cologne, 50937, Cologne, Germany
| | - Christoph M Michel
- Functional Brain Mapping Laboratory, Department of Fundamental Neurosciences, Campus Biotech, University of Geneva, 1201, Geneva, Switzerland. .,Center for Biomedical Imaging (CIBM), Lausanne and Geneva, 1015 Lausanne, Switzerland.
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8
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Abstract
Obsessive compulsive disorder (OCD) is a psychiatric condition defined by intrusive thoughts (obsessions) associated with compensatory and repetitive behaviour (compulsions). However, advancement in our understanding of this disorder has been hampered by the absence of effective animal models and correspondingly analysis of the physiological changes that may be present in these models. To address this, we have evaluated two current rodent models of OCD; repeated injection of dopamine D2 agonist quinpirole and repeated adolescent injection of the tricyclic agent clomipramine in combination with a behavioural paradigm designed to produce compulsive lever pressing. These results were then compared with their relative impact on the state of activity of the mesolimbic dopaminergic system using extracellular recoding of spontaneously active dopamine neurons in the ventral tegmental area (VTA). The clomipramine model failed to exacerbate compulsive lever pressing and VTA dopamine neurons in clomipramine-treated rats had mildly diminished bursting activity. In contrast, quinpirole-treated animals showed significant increases in compulsive lever pressing, which was concurrent with a substantial diminution of bursting activity of VTA dopamine neurons. Therefore, VTA dopamine activity correlated with the behavioural response in these models. Taken together, these data support the view that compulsive behaviours likely reflect, at least in part, a disruption of the dopaminergic system, more specifically by a decrease in baseline phasic dopamine signalling mediated by burst firing of dopamine neurons.
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Affiliation(s)
- Thibaut Sesia
- Departments of Anatomy and Neurobiology, University of Maryland, Baltimore, MD, U.S.A
| | - Brandon Bizup
- Departments of Neuroscience, Psychiatry and Psychology, University of Pittsburgh, Pittsburgh, PA, U.S.A
| | - Anthony A. Grace
- Departments of Neuroscience, Psychiatry and Psychology, University of Pittsburgh, Pittsburgh, PA, U.S.A
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9
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Affiliation(s)
- Thibaut Sesia
- University of Pittsburgh, Pittsburgh, PA 15260, USA.
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10
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Lim LW, Blokland A, Tan S, Vlamings R, Sesia T, Aziz-Mohammadi M, Visser-Vandewalle V, Steinbusch HW, Schruers K, Temel Y. Corrigendum to “Attenuation of fear-like response by escitalopram treatment after electrical stimulation of the midbrain dorsolateral periaqueductal gray” [Exp Neurol. 226(2) (2010) 293–300]. Exp Neurol 2011. [DOI: 10.1016/j.expneurol.2010.12.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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11
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Lim LW, Blokland A, Tan S, Vlamings R, Sesia T, Aziz-Mohammadi M, Visser-Vandewalle V, Steinbusch HW, Schruers K, Temel Y. Attenuation of fear-like response by escitalopram treatment after electrical stimulation of the midbrain dorsolateral periaqueductal gray. Exp Neurol 2010; 226:293-300. [DOI: 10.1016/j.expneurol.2010.08.035] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2010] [Revised: 08/26/2010] [Accepted: 08/30/2010] [Indexed: 11/26/2022]
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Basar K, Sesia T, Groenewegen H, Steinbusch HWM, Visser-Vandewalle V, Temel Y. Nucleus accumbens and impulsivity. Prog Neurobiol 2010; 92:533-57. [PMID: 20831892 DOI: 10.1016/j.pneurobio.2010.08.007] [Citation(s) in RCA: 169] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2008] [Revised: 08/16/2010] [Accepted: 08/25/2010] [Indexed: 11/26/2022]
Abstract
The multifaceted concept of impulsivity implies that different impulsivity aspects, mediated by different neural processes, influence behavior at different levels. The nucleus accumbens (NAc) is a key component of the neural processes regulating impulsivity. In this review, we discuss the findings of lesion studies in animals and functional imaging studies in humans focusing on the role of the NAc in impulsivity. Evidence supports that the extent and pattern of involvement of the NAc, and its subregions, the core and the shell, vary among different facets of impulsivity. Data from imaging studies reviewed in this article suggest the involvement of the ventral striatum/NAc in impulsive choice. Findings of animal studies indicate that lesions of the NAc core subregion facilitated impulsivity in tasks involving intertemporal choice, and promoted a risk-averse, less impulsive, tendency in tasks involving options with probability differences. Modification of neurotransmitter activity, especially of dopamine, which is proposed to underlie the changes observed in functional imaging studies, has been shown to influence afferent input pattern in the NAc and the generation of the behavioral output. Parameters of behavioral tasks reflecting response inhibition function are altered by neurochemical interventions and local electrical stimulation in both the core and the shell subregions. In toto, NAc's pattern of neuronal activity, either genetically determined or acquired, has a critical impact on the interindividual variation in the expression of impulsivity. Nevertheless, the NAc is not the only substrate responsible for impulsivity and it is not involved in each facet of impulsivity to the same extent.
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Affiliation(s)
- Koray Basar
- Department of Psychiatry, Faculty of Medicine, Hacettepe University, Ankara, Turkey
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Sesia T, Bulthuis V, Tan S, Lim LW, Vlamings R, Blokland A, Steinbusch HWM, Sharp T, Visser-Vandewalle V, Temel Y. Deep brain stimulation of the nucleus accumbens shell increases impulsive behavior and tissue levels of dopamine and serotonin. Exp Neurol 2010; 225:302-9. [PMID: 20615406 DOI: 10.1016/j.expneurol.2010.06.022] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2010] [Revised: 06/08/2010] [Accepted: 06/29/2010] [Indexed: 01/11/2023]
Abstract
The nucleus accumbens (NAc) is gaining interest as a target for deep brain stimulation (DBS) in refractory neuropsychiatric disorders with impulsivity as core symptom. The nucleus accumbens is composed of two subterritories, core and shell, which have different anatomical connections. In animal models, it has been shown that DBS of the NAc changes impulsive action. Here, we tested the hypothesis that a change in impulsive action by DBS of the NAc is associated with changes in dopamine levels. Rats received stimulating electrodes either in the NAc core or shell, and underwent behavioral testing in a reaction time task. In addition, in a second experiment, the effect of DBS of the NAc core and shell on extracellular dopamine and serotonin levels was assessed in the NAc and medial prefrontal cortex. Control subjects received sham surgery. We have found that DBS of the NAc shell stimulation induced more impulsive action but less perseverative checking. These effects were associated with increased levels of dopamine and serotonin in the NAc, but not in the medial prefrontal cortex. DBS of the NAc core had no effect on impulsive action, but decreased perseverative responses indicative of a better impulse control. In these subjects, no effects were found on neurotransmitter levels. Our data point out that DBS of the NAc shell has negative effects on impulsive action which is accompanied by increases of dopamine and serotonin levels in the NAc, whereas DBS of the NAc core has beneficial behavioral effects.
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Affiliation(s)
- Thibaut Sesia
- Department of Neuroscience, University of Pittsburgh, Pittsburgh, PA, USA.
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Moers-Hornikx VM, Sesia T, Basar K, Lim LW, Hoogland G, Steinbusch HW, Gavilanes DA, Temel Y, Vles JS. Cerebellar nuclei are involved in impulsive behaviour. Behav Brain Res 2009; 203:256-63. [DOI: 10.1016/j.bbr.2009.05.011] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2009] [Revised: 04/16/2009] [Accepted: 05/09/2009] [Indexed: 10/20/2022]
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15
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Sesia T, Temel Y, Lim LW, Blokland A, Steinbusch HWM, Visser-Vandewalle V. Deep brain stimulation of the nucleus accumbens core and shell: opposite effects on impulsive action. Exp Neurol 2008; 214:135-9. [PMID: 18762185 DOI: 10.1016/j.expneurol.2008.07.015] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2008] [Revised: 07/20/2008] [Accepted: 07/22/2008] [Indexed: 10/21/2022]
Abstract
The nucleus accumbens is gaining interest as a target for deep brain stimulation in refractory neuropsychiatric disorders with impulsivity as core symptom. The nucleus accumbens is composed of two subterritories, core and shell, which have different anatomical connections. Here, we tested the hypothesis that stimulation of the nucleus accumbens core and shell would have different effects on impulsivity. Rats received bilateral stimulation at the level of the nucleus accumbens core or shell during a reaction time task. Stimulation of the nucleus accumbens core significantly decreased impulsivity, while stimulation of the shell increased it. Our results support the hypothesis that the nucleus accumbens is a potential target to treat neuropsychiatric disorders related to impulsivity by deep brain stimulation. However, different behavioral effects resulting from stimulation of the subterritories should be taken into account.
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Affiliation(s)
- Thibaut Sesia
- Department of Neuroscience, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands.
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Lim LW, Blokland A, Visser-Vandewalle V, Vlamings R, Sesia T, Steinbusch H, Schruers K, Griez E, Temel Y. High-frequency stimulation of the dorsolateral periaqueductal gray and ventromedial hypothalamus fails to inhibit panic-like behaviour. Behav Brain Res 2008; 193:197-203. [PMID: 18582503 DOI: 10.1016/j.bbr.2008.05.020] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2008] [Revised: 05/16/2008] [Accepted: 05/19/2008] [Indexed: 11/19/2022]
Abstract
Electrical stimulation of the dorsolateral periaqueductal gray (dlPAG) and one of its target structures, the ventromedial hypothalamus (VMH), produces a typical behaviour in rats consisting of vigorous running and jumping which is known as "escape behaviour". Escape behaviour in rodents closely mimics panic attacks in humans. Since electrical stimulation at higher frequencies generally inhibits the stimulated region, we tested in this study the hypothesis that deep brain stimulation (DBS) of the dlPAG and VMH at higher frequencies (> 100 Hz) would not induce escape behaviour. More specifically, we evaluated whether experimental DBS could be used to inhibit panic-like behaviour. Rats underwent implantation of DBS-electrodes at the level of the dlPAG and VMH and the effects of various stimulation parameters were assessed. In addition, we studied the neural activation pattern resulting from DBS of the dlPAG and VMH using c-Fos immunohistochemistry. We found that stimulation amplitude is the most important stimulation parameter in the induction of escape behaviour. Remarkably, stimulation frequency (1-300 Hz) had no effect on stimulation-induced escape behaviour and therefore it was not possible to prevent the induction of escape behaviour with higher frequencies. The neuronal activation pattern resulting from dlPAG and VMH DBS was similar. These findings suggest that DBS of the dlPAG and VMH induces panic-related behaviours even at higher frequencies.
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Affiliation(s)
- Lee Wei Lim
- Department of Neuroscience, Maastricht University, Maastricht, The Netherlands.
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