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Evers MEA, Nelissen J, Vlooswijk MCG, van Kranen-Mastenbroek VHBM, Leentjens AFG, Rouhl RPW. Risk factors for behavioral and psychotic dysregulation at the epilepsy monitoring unit in patients with intracranial electrodes. Epilepsy Behav 2023; 148:109448. [PMID: 37776593 DOI: 10.1016/j.yebeh.2023.109448] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 09/13/2023] [Accepted: 09/14/2023] [Indexed: 10/02/2023]
Abstract
OBJECTIVE Aberrant behavior in patients with epilepsy (PWE) admitted to an epilepsy monitoring unit (EMU) can endanger their safety. We sought to identify predictive factors for post-ictal behavioral dysregulation and psychosis in patients with refractory epilepsy being monitored at an EMU. METHODS Retrospective data were gathered from electronic patient files of all patients with refractory epilepsy who underwent intracranial registration at our EMU. We assessed behavioral and psychotic dysregulations by reviewing clinical notes, administered emergency medication, and reports of injuries or casualties in patients and nurses. In addition, we compared patient demographic characteristics, clinical characteristics, and antiepileptic drug (AED) profiles between patients with and without behavioral and/or psychotic dysregulation. RESULTS Out of 73 admissions, 23 patients (32%) experienced behavioral dysregulation, and five patients experienced psychosis (7%). Behavioral dysregulation was only significantly associated with a previous history of interictal or postictal psychosis. Psychotic dysregulation is significantly associated with a psychiatric history, including a history of agitation or psychosis, whether or not epilepsy-related. For both types of dysregulations, there was no relation with a pre-admission frequency of seizures, clustering of seizures during monitoring, or a temporal focus of seizures. We could not report a relationship between AED use, tapering, and the occurrence of dysregulation. CONCLUSION We conclude that a psychiatric history, including a history of agitation and psychosis, is related to an increased risk of behavioral and psychotic dysregulation in patients undergoing invasive seizure monitoring at the EMU.
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Affiliation(s)
- M E A Evers
- Department of Neurology, Maastricht University Medical Centre+, Maastricht, the Netherlands
| | - J Nelissen
- Department of Neurology, Maastricht University Medical Centre+, Maastricht, the Netherlands; Academic Center for Epileptology Kempenhaeghe/MUMC+, Heeze and Maastricht, the Netherlands
| | - M C G Vlooswijk
- Department of Neurology, Maastricht University Medical Centre+, Maastricht, the Netherlands; Academic Center for Epileptology Kempenhaeghe/MUMC+, Heeze and Maastricht, the Netherlands
| | - V H B M van Kranen-Mastenbroek
- Academic Center for Epileptology Kempenhaeghe/MUMC+, Heeze and Maastricht, the Netherlands; Department of Clinical Neurophysiology, Maastricht University Medical Centre+, Maastricht, the Netherlands; School for Mental Health and Neurosciences, Maastricht University, Maastricht, the Netherlands
| | - A F G Leentjens
- School for Mental Health and Neurosciences, Maastricht University, Maastricht, the Netherlands; Department of Psychiatry and Neuropsychology, Maastricht University Medical Centre+, Maastricht, the Netherlands
| | - R P W Rouhl
- Department of Neurology, Maastricht University Medical Centre+, Maastricht, the Netherlands; Academic Center for Epileptology Kempenhaeghe/MUMC+, Heeze and Maastricht, the Netherlands; School for Mental Health and Neurosciences, Maastricht University, Maastricht, the Netherlands.
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Alemam S, Bokhari SA, Hasan SF, Al Ammour S, Hussein B, Elnoor M. A Case of Treatment-Resistant Schizophrenia With Mesial Temporal Sclerosis: A Case Report. Cureus 2023; 15:e49623. [PMID: 38161891 PMCID: PMC10755633 DOI: 10.7759/cureus.49623] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/29/2023] [Indexed: 01/03/2024] Open
Abstract
Mesial temporal sclerosis (MTS) is one of the most common causes of treatment-resistant epilepsy, especially temporal lobe epilepsy (TLE). Various psychiatric symptoms are common with temporal lobe epilepsy. However, the least established symptoms were psychotic symptoms. Furthermore, treatment-resistant schizophrenia is a significant proportion of schizophrenia patients who have failed treatment with at least two different antipsychotics, resulting in poor outcomes and a significant negative impact on the patient's life. In our case report, psychotic symptoms and abnormal behaviors were explained by schizophrenia for more than 17 years in a 32-year-old female, while the diagnosis of temporal lobe epilepsy with mesial temporal sclerosis was missed, resulting in incomplete treatment, which led to a deterioration of her quality of life for years. This case aims to shed light on TLE rare manifestations and to discuss the proper investigations and treatment that might increase the quality of life of these patients. Underlining the necessity for more research in treatment-resistant schizophrenia, this unusual case underscores the importance of exploring the underlying biological, psychological, and social risk factors. It also emphasizes the need to focus additional attention on formulating proper investigation strategies for the susceptible patient population.
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Affiliation(s)
- Shokry Alemam
- Psychiatry, Al Amal Psychiatric Hospital, Dubai, ARE
| | | | - Safa F Hasan
- Psychiatry, Al Amal Psychiatric Hospital, Dubai, ARE
| | | | - Basma Hussein
- Psychiatry, Al Amal Psychiatric Hospital, Dubai, ARE
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Mehdikhanova L, Vanli Yavuz EN, Çikrikçili U, Baral Kulaksizoğlu I, Bebek N, Gürses C, Gökyiğit A, Baykan B. Investigation of the Video-EEG Findings and Clinical Data in Patients Diagnosed With Epilepsy and Psychosis. Neurologist 2018; 23:167-74. [PMID: 30169371 DOI: 10.1097/NRL.0000000000000195] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Studies on electrophysiological characteristics of patients with epilepsy and concomitant psychosis are limited. We aimed to investigate the clinical and video-electroencephalography (EEG) findings of patients with epilepsy-related psychosis (EP). MATERIALS AND METHODS Fifteen patients diagnosed with EP, assessed at the video-EEG monitoring unit and were under follow-up at both epilepsy and psychiatry clinics, were included. A total of 67 nonpsychotic epilepsy patients, investigated at the video-EEG monitoring unit were randomly selected as the control group and compared statistically with the EP group. RESULTS In medical history, patients with EP had experienced significantly higher level of status epilepticus (P=0.002) and perinatal cerebral injury (P=0.04), whereas drug-resistant epilepsy was detected at a lower level (P=0.015). With respect to seizure onset zone, the EP group had significantly more seizures of unknown foci, whereas the control group had mostly temporal lobe origin (P=0.0004). EEG findings showed that slow background activity was significantly common among patients with EP (P=0.009). Although only 5 of 15 patients with EP had been operated, 43 of 67 patients had undergone epilepsy surgery (P=0.04) in the control group. However, there was no significant difference between the 2 groups with respect to postoperative seizure control as per Engel classification. CONCLUSIONS Although our sample size could be considered small, slowed EEG background activity, and the marked frequency of initial precipitant factors such as status epilepticus, perinatal cerebral injury, and detected neuronal autoantibodies suggested that EP is associated with more extensive involvement. EP is not a contraindication for epilepsy surgery, when appropriately investigated preoperatively.
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Rossi KC, Kim AM, Jetté N, Yoo JY, Hung K, Dhamoon MS. Increased risk of hospital admission for ICD-9-CM psychotic episodes following admission for epilepsy. Epilepsia 2018; 59:1603-1611. [DOI: 10.1111/epi.14508] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/08/2018] [Indexed: 01/26/2023]
Affiliation(s)
- Kyle C. Rossi
- Department of Neurology; Icahn School of Medicine at Mount Sinai; New York NY USA
| | - Anna M. Kim
- Department of Psychiatry; Icahn School of Medicine at Mount Sinai; New York NY USA
| | - Nathalie Jetté
- Department of Neurology; Icahn School of Medicine at Mount Sinai; New York NY USA
- Department of Population Health Science & Policy; Icahn School of Medicine at Mount Sinai; New York NY USA
| | - Ji Yeoun Yoo
- Department of Neurology; Icahn School of Medicine at Mount Sinai; New York NY USA
| | - Kenneth Hung
- Department of Psychiatry; Icahn School of Medicine at Mount Sinai; New York NY USA
| | - Mandip S. Dhamoon
- Department of Neurology; Icahn School of Medicine at Mount Sinai; New York NY USA
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Abstract
This case report describes a patient with a dysembryogenic neuroepithelial tumor localized in the posterior thalamus and internal capsule, which presented with psychosis including religiously determined severe self-mutilation, auditory hallucinations, and rituals. The patient's history includes periodic religiousness over decades of her life suggesting that spirituality in this case might be a symptom of tumor progression. Our case reports on the topology-related effect of lesions on different brain networks involved in the phenomenology of the patient's psychotic symptoms.
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Affiliation(s)
- Lars Levi Dutschke
- University Hospital of Psychiatry, University of Bern, Bern, Switzerland
| | - Sarah Steinau
- University Hospital of Psychiatry, University of Bern, Bern, Switzerland.,Department of Forensic Psychiatry, Psychiatric University Hospital Zurich, Zurich, Switzerland
| | - Roland Wiest
- Institute of Diagnostic and Interventional Neuroradiology, University of Bern, Inselspital, Bern, Switzerland
| | - Sebastian Walther
- University Hospital of Psychiatry, University of Bern, Bern, Switzerland
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Buranee K, Teeradej S, Chusak L, Michael M. Epilepsy-related psychoses and psychotic symptoms are significantly reduced by resective epilepsy surgery and are not associated with surgery outcome or epilepsy characteristics: A cohort study. Psychiatry Res 2016; 245:333-9. [PMID: 27573056 DOI: 10.1016/j.psychres.2016.08.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2015] [Revised: 07/04/2016] [Accepted: 08/06/2016] [Indexed: 11/23/2022]
Abstract
We examine epilepsy-related psychoses and psychotic symptoms (ERPs) and the effects of epilepsy surgery on inter-ictal, aura, ictal and peri-ictal (pre- and post-ictal) psychoses. We included 189 patients with refractory epilepsy both before and 24 months after surgery. Engel's classification was the primary outcome measurement. Epilepsy surgery reduced the prevalence of ERPs from 17.5% to 4.2%, psychotic aura from 7.9% to 0.5%, ictal psychoses from 3.7% to 1.1% and peri-ictal psychoses from 4.2% to 0.5%. The prevalence of inter-ictal psychoses decreased from 5.3% to 0.5%, but 4 new cases of inter-ictal psychoses were found following surgery. Interictal dysphoric disorder significantly predicted surgery outcome. In patients with and without ERPs, epilepsy surgery induced seizure reduction in more than 90% of the cases, showing that both groups benefit equally from surgery. No associations between ERPs and epileptic characteristics were found, including laterality, type of lesion, type of epilepsy, number of seizures, duration of illness or age at onset. Epilepsy surgery significantly improves ERPs particularly psychotic aura and peri-ictal psychoses. Although inter-ictal psychoses are successfully treated, new inter-ictal psychoses appear in a few cases either as alternative psychoses or a possible switch from pre-surgery episodic into inter-ictal psychoses.
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Chong DJ, Dugan P. Ictal fear: Associations with age, gender, and other experiential phenomena. Epilepsy Behav 2016; 62:153-8. [PMID: 27479777 DOI: 10.1016/j.yebeh.2016.05.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 04/30/2016] [Accepted: 05/16/2016] [Indexed: 11/27/2022]
Abstract
PURPOSE The aim of this study was to determine the relationship of fear to other auras and to gender and age using a large database. METHODS The Epilepsy Phenome/Genome Project (EPGP) is a multicenter, multicontinental cross-sectional study in which ictal symptomatology and other data were ascertained in a standardized series of questionnaires then corroborated by epilepsy specialists. Auras were classified into subgroups of symptoms, with ictal fear, panic, or anxiety as a single category. RESULTS Of 536 participants with focal epilepsy, 72 were coded as having ictal fear/panic/anxiety. Reviewing raw patient responses, 12 participants were deemed not to have fear, and 24 had inadequate data, leaving 36 (7%) of 512 with definite ictal fear. In univariate analyses, fear was significantly associated with auras historically considered temporal lobe in origin, including cephalic, olfactory, and visceral complaints; déjà vu; and derealization. On both univariate and multivariate stepwise analyses, fear was associated with jamais vu and auras with cardiac symptoms, dyspnea, and chest tightening. Expressive aphasia was associated with fear on univariate analysis only, but the general category of aphasias was associated with fear only in the multivariate model. There was no age or gender relationship with fear when compared to the overall population with focal epilepsy that was studied under the EPGP. Patients with ictal fear were more likely to have a right hemisphere seizure focus. CONCLUSIONS Ictal fear was strongly associated with other auras considered to originate from the limbic system. No relationship of fear with age or gender was observed.
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Affiliation(s)
- Derek J Chong
- Department of Neurology, New York University Medical Center, 223 E 34th St., New York, NY 10011, USA.
| | - Patricia Dugan
- Department of Neurology, New York University Medical Center, 223 E 34th St., New York, NY 10011, USA.
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Sone D, Matsuda H, Ota M, Maikusa N, Kimura Y, Sumida K, Yokoyama K, Imabayashi E, Watanabe M, Watanabe Y, Okazaki M, Sato N. Graph Theoretical Analysis of Structural Neuroimaging in Temporal Lobe Epilepsy with and without Psychosis. PLoS One 2016; 11:e0158728. [PMID: 27385130 DOI: 10.1371/journal.pone.0158728] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Accepted: 06/21/2016] [Indexed: 01/15/2023] Open
Abstract
Purpose Psychosis is one of the most important psychiatric comorbidities in temporal lobe epilepsy (TLE), and its pathophysiology still remains unsolved. We aimed to explore the connectivity differences of structural neuroimaging between TLE with and without psychosis using a graph theoretical analysis, which is an emerging mathematical method to investigate network connections in the brain as a small-world system. Materials and Methods We recruited 11 TLE patients with unilateral hippocampal sclerosis (HS) presenting psychosis or having a history of psychosis (TLE-P group). As controls, 15 TLE patients with unilateral HS without any history of psychotic episodes were also recruited (TLE-N group). For graph theoretical analysis, the normalized gray matter images of both groups were subjected to Graph Analysis Toolbox (GAT). As secondary analyses, each group was compared to 14 age- and gender-matched healthy subjects. Results The hub node locations were found predominantly in the ipsilateral hemisphere in the TLE-N group, and mainly on the contralateral side in the TLE-P group. The TLE-P group showed significantly higher characteristic path length, transitivity, lower global efficiency, and resilience to random or targeted attack than those of the TLE-N group. The regional comparison in betweenness centrality revealed significantly decreased connectivity in the contralateral temporal lobe, ipsilateral middle frontal gyrus, and bilateral postcentral gyri in the TLE-P group. The healthy subjects showed well-balanced nodes/edges distributions, similar metrics to TLE-N group except for higher small-worldness/modularity/assortativity, and various differences of regional betweenness/clustering. Conclusion In TLE with psychosis, graph theoretical analysis of structural imaging revealed disrupted connectivity in the contralateral hemisphere. The network metrics suggested that the existence of psychosis can bring vulnerability and decreased efficiency of the whole-brain network. The sharp differences in structural networks between morphologically homogeneous groups are remarkable and may contribute to a better understanding of psychosis in TLE.
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van Ool JS, Snoeijen-Schouwenaars FM, Schelhaas HJ, Tan IY, Aldenkamp AP, Hendriksen JGM. A systematic review of neuropsychiatric comorbidities in patients with both epilepsy and intellectual disability. Epilepsy Behav 2016; 60:130-137. [PMID: 27206231 DOI: 10.1016/j.yebeh.2016.04.018] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Revised: 04/06/2016] [Accepted: 04/06/2016] [Indexed: 11/26/2022]
Abstract
Epilepsy is a neurological condition that is particularly common in people with intellectual disability (ID). The care for people with both epilepsy and ID is often complicated by the presence of neuropsychiatric disorders, defined as psychiatric symptoms, psychiatric disorders, and behavioral problems. The aim of this study was to investigate associations between epilepsy or epilepsy-related factors and neuropsychiatric comorbidities in patients with ID and between ID and neuropsychiatric comorbidities in patients with epilepsy. We performed a systematic review of the literature, published between January 1995 and January 2015 and retrieved from PubMed/Medline, PsycINFO, and ERIC and assessed the risk of bias using the SIGN-50 methodology. Forty-two studies were identified, fifteen of which were assessed as having a low or acceptable risk-of-bias evaluation. Neuropsychiatric comorbidities were examined in relation to epilepsy in nine studies; in relation to epilepsy-related factors, such as seizure activity, seizure type, and medication in four studies; and in relation to the presence and degree of ID in five studies. We conclude that the presence of epilepsy only was not a clear determinant of neuropsychiatric comorbidity in patients with ID, although a tendency towards negative mood symptoms was identified. Epilepsy-related factors indicating a more severe form of epilepsy were associated with neuropsychiatric comorbidity as was the presence of ID as compared to those without ID in patients with epilepsy, although this should be validated in future research. A large proportion of the studies in this area is associated with a substantial risk of bias. There is a need for high quality studies using standardized methods to enable clear conclusions to be drawn that might assist in improving the quality of care for this population.
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Affiliation(s)
- Jans S van Ool
- Department of Residential Care, Kempenhaeghe Epilepsy Center, P.O. Box 61, 5590AB Heeze, The Netherlands.
| | | | - Helenius J Schelhaas
- Department of Neurology, Academic Center for Epileptology Kempenhaeghe, P.O. Box 61, 5590AB Heeze, The Netherlands
| | - In Y Tan
- Department of Residential Care, Kempenhaeghe Epilepsy Center, P.O. Box 61, 5590AB Heeze, The Netherlands
| | - Albert P Aldenkamp
- Department of Behavioral Sciences, Kempenhaeghe Epilepsy Center, P.O. Box 61, 5590AB Heeze, The Netherlands; School for Mental Health and Neuroscience, Maastricht University, P.O. Box 616, 6200MD Maastricht, The Netherlands; Department of Neurology, Maastricht University Medical Center, P.O. Box 5800, 6202AZ Maastricht, The Netherlands; Department of Neurology, Ghent University Hospital, De Pintelaan 185, 9000 Ghent, Belgium; Department of Electrical Engineering, University of Technology, P.O. Box 513, Eindhoven, The Netherlands
| | - Jos G M Hendriksen
- Department of Behavioral Sciences, Kempenhaeghe Epilepsy Center, P.O. Box 61, 5590AB Heeze, The Netherlands; Department of Neurology, Maastricht University Medical Center, P.O. Box 5800, 6202AZ Maastricht, The Netherlands; Department of Neurological Learning Disabilities, Kempenhaeghe Epilepsy Center, P.O. Box 61, 5590AB Heeze, The Netherlands.
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Hilger E, Zimprich F, Pataraia E, Aull-Watschinger S, Jung R, Baumgartner C, Bonelli S. Psychoses in epilepsy: A comparison of postictal and interictal psychoses. Epilepsy Behav 2016; 60:58-62. [PMID: 27179193 DOI: 10.1016/j.yebeh.2016.04.005] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Revised: 04/01/2016] [Accepted: 04/02/2016] [Indexed: 11/30/2022]
Abstract
We retrospectively analyzed data of patients with epilepsy (n=1434) evaluated with prolonged EEG monitoring in order to estimate the prevalence of postictal psychosis (PP) and interictal psychosis (IP), to investigate a potential association of psychosis subtype with epilepsy type, and to assess differences between PP and IP. The overall prevalence of psychosis was 5.9% (N=85); prevalence of PP (N=53) and IP (N=32) was 3.7% and 2.2%, respectively. Of patients with psychosis, 97.6% had localization-related epilepsy (LRE). Prevalence of psychosis was highest (9.3%) in patients with temporal lobe epilepsy (TLE). When comparing PP with IP groups on demographic, clinical, and psychopathological variables, patients with IP were younger at occurrence of first psychosis (P=0.048), had a shorter interval between epilepsy onset and first psychosis (P=0.002), and more frequently exhibited schizophreniform traits (conceptual disorganization: P=0.008; negative symptoms: P=0.017) than those with PP. Postictal psychosis was significantly associated with a temporal seizure onset on ictal EEG (P=0.000) and a higher incidence of violent behavior during psychosis (P=0.047). To conclude, our results support the presumption of a preponderance of LRE in patients with psychosis and that of a specific association of TLE with psychosis, in particular with PP. Given the significant differences between groups, PP and IP may represent distinct clinical entities potentially with a different neurobiological background.
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Affiliation(s)
- Eva Hilger
- Department of Neurology, Medical University of Vienna, Austria.
| | | | | | | | - Rebekka Jung
- Department of Neurology, Medical University of Vienna, Austria
| | - Christoph Baumgartner
- Karl Landsteiner Institute for Clinical Epilepsy Research and Cognitive Neurology, 2nd Neurological Department, General Hospital Hietzing with Neurological Center Rosenhuegel, Vienna, Austria
| | - Silvia Bonelli
- Department of Neurology, Medical University of Vienna, Austria
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Ma J, Leung LS. Effects of hippocampal partial kindling on sensory and sensorimotor gating and methamphetamine-induced locomotion in kindling-prone and kindling-resistant rats. Epilepsy Behav 2016; 58:119-26. [PMID: 27070861 DOI: 10.1016/j.yebeh.2016.03.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 03/03/2016] [Accepted: 03/04/2016] [Indexed: 11/26/2022]
Abstract
The effects of hippocampal partial kindling on gating of hippocampal auditory-evoked potentials (AEPs), prepulse inhibition (PPI) to an acoustic startle response, and methamphetamine-induced locomotion were examined in selectively bred kindling-prone (Fast) and kindling-resistant (Slow) rats. Ten electrographic seizures (afterdischarges, ADs) induced by high-frequency stimulation of the hippocampal CA1 region resulted in deficits in gating of hippocampal AEP and PPI in Fast, but not Slow, rats. The increase in AD duration with kindling was similar in Fast and Slow rats. Kindling-induced changes in hippocampal AEP and PPI in Fast rats were abolished by pretest injection of CGP7930 (1mg/kg i.p.), a positive allosteric modulator of GABAB receptors. Injection of haloperidol (0.1mg/kg i.p.) daily before kindling also prevented kindling-induced changes in PPI and hippocampal AEP in Fast rats. Interestingly, methamphetamine-induced hyperlocomotion was enhanced by kindling in Slow, but not Fast, rats. However, the methamphetamine-induced hyperlocomotion in Slow rats was not suppressed by daily injection of 0.1mg/kg i.p. haloperidol before kindling, as compared with kindling without haloperidol. It is concluded that genetic disposition affected the behavioral consequences of repeated seizures. Fast rats required fewer hippocampal ADs to induce sensory (AEP) and sensorimotor (PPI) deficits, while Slow kindled rats were more sensitive to methamphetamine-induced locomotion. Dopaminergic blockade by haloperidol during kindling, or acute injection of CGP7930 before testing, attenuated some of the behavioral deficits induced by repeated hippocampal seizures, suggesting possible therapeutic strategies to treat the schizophrenic-like symptoms associated with temporal lobe epilepsy.
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Affiliation(s)
- Jingyi Ma
- Department of Physiology and Pharmacology, The University of Western Ontario, London, Ontario N6A 5C1, Canada.
| | - L Stan Leung
- Department of Physiology and Pharmacology, The University of Western Ontario, London, Ontario N6A 5C1, Canada; Graduate Program in Neuroscience, The University of Western Ontario, London, Ontario N6A 5C1, Canada
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Repchak AT, Quinn DK. Epileptic Catatonia: A Case Series and Systematic Review. Psychosomatics 2015; 57:217-25. [PMID: 26892327 DOI: 10.1016/j.psym.2015.11.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 11/18/2015] [Accepted: 11/19/2015] [Indexed: 12/14/2022]
Affiliation(s)
| | - Davin K Quinn
- Department of Psychiatry, University of New Mexico, Albuquerque, NM
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13
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Affiliation(s)
- A H V Schapira
- Department of Clinical Neurosciences, UCL Institute of Neurology, London, UK.
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14
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Sethi NK, Milrad S, Katus L, Cool J. Postictal psychosis in temporal lobe epilepsy. Eur J Neurol 2013; 20:e124. [DOI: 10.1111/ene.12235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2013] [Accepted: 06/05/2013] [Indexed: 11/30/2022]
Affiliation(s)
- N. K. Sethi
- Department of Neurology; New York Presbyterian Hospital; Weill Cornell Medical Center; New York; NY; USA
| | - S. Milrad
- Department of Neurology; New York Presbyterian Hospital; Weill Cornell Medical Center; New York; NY; USA
| | - L. Katus
- Department of Neurology; New York Presbyterian Hospital; Weill Cornell Medical Center; New York; NY; USA
| | - J. Cool
- Department of Neurology; New York Presbyterian Hospital; Weill Cornell Medical Center; New York; NY; USA
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15
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Risk factors identified for postictal psychosis. Nat Rev Neurol 2013; 9:239-239. [DOI: 10.1038/nrneurol.2013.61] [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: 11/08/2022]
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