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Temporal lobe epilepsy and memory

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https://www.readbyqxmd.com/read/28409114/clinical-and-neuropsychological-changes-after-the-disappearance-of-seizures-in-a-case-of-transient-epileptic-amnesia
#1
Masanori Sekimoto, Reimi Muramatsu, Masaaki Kato, Teiichi Onuma
We encountered a female patient with late-onset temporal lobe epilepsy who presented with transient amnesia as the sole ictal manifestation, an accelerated rate of forgetting daily life events, and a retrograde memory deficit. We describe the memory function of the patient both before and after the administration of antiseizure medication. After the patient's seizures were controlled with antiseizure drugs, her neuropsychological memory performance scores showed improvement. We presumed that the disappearance of seizures was associated with a decrease in the accelerated rate of forgetting medication...
2017: Epilepsy & Behavior Case Reports
https://www.readbyqxmd.com/read/28407524/age-at-surgery-as-a-predictor-of-cognitive-improvements-in-patients-with-drug-resistant-temporal-epilepsy
#2
Irene Cano-López, Juan Francisco Vázquez, Anabel Campos, Antonio Gutiérrez, Mercedes Garcés, Asier Gómez-Ibáñez, Rebeca Conde, Esperanza González-Bono, Vicente Villanueva
Temporal lobe epilepsy (TLE) surgery is an effective procedure that can produce cognitive changes. However, the prognostic factors related with cognitive outcomes need to be better understood. The aim of the present study is to know if age at surgery is a reliable predictor of verbal memory competence and considering factors such as: hemisphere; type of surgery; pre-surgical seizure frequency; and epilepsy duration. Sixty-one typically dominant patients with drug-resistant TLE (34 with left TLE [L-TLE] and 27 with right TLE [R-TLE]) underwent a neuropsychological assessment before and a year after surgery...
April 10, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28390940/ginkgo-biloba-l-attenuates-spontaneous-recurrent-seizures-and-associated-neurological-conditions-in-lithium-pilocarpine-rat-model-of-temporal-lobe-epilepsy-through-inhibition-of-mammalian-target-of-rapamycin-pathway-hyperactivation
#3
Arindam Ghosh Mazumder, Pallavi Sharma, Vikram Patial, Damanpreet Singh
ETHNOPHARMACOLOGICAL RELEVANCE: Ginkgo biloba L. (Ginkgoaceae) has been widely used in traditional medicine for variety of neurological conditions particularly behavioral and memory impairments. AIM OF THE STUDY: The present study was envisaged to explore the effect of a standardized fraction of Ginkgo biloba leaves (GBbf) in rat model of lithium-pilocarpine induced spontaneous recurrent seizures, and associated behavioral impairments and cognitive deficit. MATERIALS AND METHODS: Rats showing appearance of spontaneous recurrent seizures following lithium pilocarpine (LiPc)-induced status epilepticus (SE) were treated with different doses of GBbf or vehicle for subsequent 4 weeks...
April 5, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28380661/characterising-subtypes-of-hippocampal-sclerosis-and-reorganisation-correlation-with-pre-and-post-operative-memory-deficit
#4
Anaclara Prada Jardim, Joan Liu, Jack Baber, Zuzanna Michalak, Cheryl Reeves, Matthew Ellis, Jan Novy, Jane de Tisi, Andrew McEvoy, Anna Miserocchi, Elza Marcia Targas Yacubian, Sanjay Sisodiya, Pamela Thompson, Maria Thom
Neuropathological subtypes of hippocampal sclerosis (HS) in temporal lobe epilepsy (2013 ILAE classification) are based on the qualitative assessment of patterns of neuronal loss with NeuN. In practice, some cases appear indeterminate between type 1 (CA1 and CA4 loss) and type 2 HS (CA1 loss) and we predicted that MAP2 would enable a more stringent classification. HS subtypes, as well as the accompanying alteration of axonal networks, regenerative capacity and neurodegeneration have been previously correlated with outcome and memory deficits and may provide prognostic clinical information...
April 5, 2017: Brain Pathology
https://www.readbyqxmd.com/read/28362965/transsylvian-selective-amygdalohippocampectomy-for-mesiotemporal-epilepsy-experience-with-162-procedures
#5
Barbara Schmeiser, Kathrin Wagner, Andreas Schulze-Bonhage, Christian Erich Elger, Bernhard Jochen Steinhoff, Anne-Sophie Wendling, Irina Mader, Marco Prinz, Christian Scheiwe, Josef Zentner
BACKGROUND: Mesial temporal lobe epilepsy (MTLE) is one of the most common forms of epilepsy refractory to medical therapy. Among different surgical approaches, selective amygdalohippocampectomy has gained increasing interest for its rationale of isolated removal of the epileptogenic mesiotemporal area. OBJECTIVE: To summarize our experience with surgical treatment of MTLE in 162 patients using the transsylvian approach and to analyze possible effects of length of hippocampal resection and postoperative gliosis on seizure and cognitive outcome...
March 1, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28352126/social-cognition-in-neuropsychiatric-populations-a-comparison-of-theory-of-mind-in-schizophrenia-and-mesial-temporal-lobe-epilepsy
#6
Łukasz Okruszek, Aleksandra Bala, Małgorzata Wordecha, Michał Jarkiewicz, Adam Wysokiński, Ewa Szczepocka, Aleksandra Piejka, Oliwia Zaborowska, Marta Szantroch, Andrzej Rysz, Andrzej Marchel
Social cognition deficits are observed both in patients with schizophrenia (SCZ) and in patients with mesial temporal lobe epilepsy (MTLE). This may be due to dysfunction of the amygdala network, which is a common feature of both diseases. In this study, SCZ (n = 48) or MTLE (n = 31) and healthy controls (HC, n = 47) completed assessments of mentalising (Reading Mind in the Eyes Test, RMET) and basic cognitive processing, e.g., working memory, executive functions and psychomotor speed (Trail-Making Test B and Digit Symbol)...
March 28, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28340432/reorganization-of-anterior-and-posterior-hippocampal-networks-associated-with-memory-performance-in-mesial-temporal-lobe-epilepsy
#7
Hong Li, Caihong Ji, Lujia Zhu, Peiyu Huang, Biao Jiang, Xiaojun Xu, Jianzhong Sun, Zhong Chen, Meiping Ding, Minming Zhang, Shuang Wang
OBJECTIVE: To investigate the pattern of functional demarcation of hippocampal network and its relationship with memory performance in mesial temporal lobe epilepsy (mTLE) with unilateral hippocampal sclerosis. METHODS: Resting state fMRI data were acquired from fifteen left mTLE patients, fourteen right mTLE patients and twenty healthy subjects. We explore the hippocampal-cortical alterations and corresponding inter-hemispheric functional connectivity (FC) across anterior and posterior hippocampal networks...
May 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28324947/a-sparse-laguerre-volterra-autoregressive-model-for-seizure-prediction-in-temporal-lobe-epilepsy
#8
Pen-Ning Yu, Shokofeh A Naiini, Christi N Heck, Charles Y Liu, Dong Song, Theodore W Berger
A sparse Laguerre-Volterra autoregressive model has been developed as feature extraction from subdural human EEG data for seizure prediction in temporal lobe epilepsy. The use of Laguerre-Volterra kernel can compactly yield an autoregressive model of longer system memory without increasing the number of the coefficients. In 6 sets of seizure, we used a sparse Laguerre-Volterra autoregressive model with 6 coefficients and the decay parameter of 0.2 and obtained the 10-fold cross-validation prediction results of high Matthews correlation coefficients (0...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28320269/status-epilepticus-impairs-synaptic-plasticity-in-rat-hippocampus-and-is-followed-by-changes-in-expression-of-nmda-receptors
#9
T Y Postnikova, O E Zubareva, A A Kovalenko, K K Kim, L G Magazanik, A V Zaitsev
Cognitive deficits and memory loss are frequent in patients with temporal lobe epilepsy. Persistent changes in synaptic efficacy are considered as a cellular substrate underlying memory processes. Electrophysiological studies have shown that the properties of short-term and long-term synaptic plasticity in the cortex and hippocampus may undergo substantial changes after seizures. However, the neural mechanisms responsible for these changes are not clear. In this study, we investigated the properties of short-term and long-term synaptic plasticity in rat hippocampal slices 24 h after pentylenetetrazole (PTZ)-induced status epilepticus...
March 2017: Biochemistry. Biokhimii︠a︡
https://www.readbyqxmd.com/read/28318972/persistent-single-neuron-activity-during-working-memory-in-the-human-medial-temporal-lobe
#10
Simon Kornblith, Rodrigo Quian Quiroga, Christof Koch, Itzhak Fried, Florian Mormann
Working memory is an essential component of human cognition. Persistent activity related to working memory has been reported in many brain areas, including the inferior temporal and prefrontal cortex [1-8]. The medial temporal lobe (MTL) contains "concept cells" that respond invariantly to specific individuals or places whether presented as images, text, or speech [9, 10]. It is unknown, however, whether the MTL also participates in working memory processes. We thus sought to determine whether human MTL neurons respond to images held in working memory...
April 3, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28297685/-surgical-technique-and-memory-outcome-of-transsylvian-hippocampal-transection-in-24-patients-with-mri-negative-temporal-lobe-epilepsy
#11
Michiharu Morino, Sachiko Takamizawa, Chika Yoshimura, Tatsuya Sasaki
No abstract text is available yet for this article.
March 2017: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/28242475/importance-of-neuropsychological-and-clinical-features-to-predict-seizure-control-in-medically-treated-patients-with-mesial-temporal-epilepsy-and-hippocampal-sclerosis
#12
Laia Grau-López, Marta Jiménez, Jordi Ciurans, Cynthia Cáceres, Juan Luis Becerra
OBJECTIVE: It is not yet understood why seizures in certain patients with mesial temporal lobe epilepsy and hippocampal sclerosis (MTLE-HS) develop resistance to antiepileptic drugs (AEDs) while others achieve good seizure control with this treatment. We analyzed clinical and neuropsychological features associated with seizure control in patients with MTLE-HS who had not undergone resective surgery. METHODS: We enrolled 40 patients with medically treated MTLE-HS and retrospectively collected the following data from prospective databases: sex, febrile seizures, central nervous system infection, history of head trauma, cognitive impairment, psychiatric disturbances, history of status epilepticus, age at onset of epilepsy, aura, seizure type and frequency, electroencephalography abnormalities, HS side, AEDs, global cognitive status, and neuropsychological functions such as cognitive processing speed, attention and executive functions, verbal and visual memory, language, and visuospatial ability...
February 24, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28226829/a-sparse-laguerre-volterra-autoregressive-model-for-seizure-prediction-in-temporal-lobe-epilepsy
#13
Pen-Ning Yu, Shokofeh A Naiini, Christi N Heck, Charles Y Liu, Dong Song, Theodore W Berger, Pen-Ning Yu, Shokofeh A Naiini, Christi N Heck, Charles Y Liu, Dong Song, Theodore W Berger, Shokofeh A Naiini, Charles Y Liu, Pen-Ning Yu, Theodore W Berger, Christi N Heck, Dong Song
A sparse Laguerre-Volterra autoregressive model has been developed as feature extraction from subdural human EEG data for seizure prediction in temporal lobe epilepsy. The use of Laguerre-Volterra kernel can compactly yield an autoregressive model of longer system memory without increasing the number of the coefficients. In 6 sets of seizure, we used a sparse Laguerre-Volterra autoregressive model with 6 coefficients and the decay parameter of 0.2 and obtained the 10-fold cross-validation prediction results of high Matthews correlation coefficients (0...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28222339/everyday-memory-impairment-in-patients-with-temporal-lobe-epilepsy-caused-by-hippocampal-sclerosis
#14
Patrícia Rzezak, Ellen Marise Lima, Ana Carolina Gargaro, Erica Coimbra, Silvia de Vincentiis, Tonicarlo Rodrigues Velasco, João Pereira Leite, Geraldo F Busatto, Kette D Valente
OBJECTIVE: Patients with temporal lobe epilepsy caused by hippocampal sclerosis (TLE-HS) have episodic memory impairment. Memory has rarely been evaluated using an ecologic measure, even though performance on these tests is more related to patients' memory complaints. We aimed to measure everyday memory of patients with TLE-HS to age- and gender-matched controls. METHODS: We evaluated 31 patients with TLE-HS and 34 healthy controls, without epilepsy and psychiatric disorders, using the Rivermead Behavioral Memory Test (RBMT), Visual Reproduction (WMS-III) and Logical Memory (WMS-III)...
February 18, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28207604/memory-rehabilitation-strategies-in-nonsurgical-temporal-lobe-epilepsy-a-review
#15
Alessandra Del Felice, Marzia Alderighi, Matteo Martinato, Davide Grisafi, Anna Bosco, Pamela J Thompson, Josemir W Sander, Stefano Masiero
People with temporal lobe epilepsy (TLE) who have not undergone epilepsy surgery often complain of memory deficits. Cognitive rehabilitation is employed as a remedial intervention in clinical settings, but research is limited and findings concerning efficacy and the criteria for choosing different approaches have been inconsistent. We aimed to appraise existing evidence on memory rehabilitation in nonsurgical individuals with temporal lobe epilepsy and to ascertain the effectiveness of specific strategies. A scoping review was preferred given the heterogeneous nature of the interventions...
February 15, 2017: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/28180076/face-name-association-task-reveals-memory-networks-in-patients-with-left-and-right-hippocampal-sclerosis
#16
Silke Klamer, Monika Milian, Michael Erb, Sabine Rona, Holger Lerche, Thomas Ethofer
We aimed to identify reorganization processes of episodic memory networks in patients with left and right temporal lobe epilepsy (TLE) due to hippocampal sclerosis as well as their relations to neuropsychological memory performance. We investigated 28 healthy subjects, 12 patients with left TLE (LTLE) and 9 patients with right TLE (RTLE) with hippocampal sclerosis by means of functional magnetic resonance imaging (fMRI) using a face-name association task, which combines verbal and non-verbal memory functions...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28152425/stimulation-of-the-medial-septum-improves-performance-in-spatial-learning-following-pilocarpine-induced-status-epilepticus
#17
Darrin J Lee, Ali Izadi, Mikhail Melnik, Stacey Seidl, Angela Echeverri, Kiarash Shahlaie, Gene G Gurkoff
Temporal lobe epilepsy often leads to hippocampal sclerosis and persistent cognitive deficits, including difficulty with learning and memory. Hippocampal theta oscillations are critical in optimizing hippocampal function and facilitating plasticity. We hypothesized that pilocarpine-induced status epilepticus would disrupt oscillations and behavioral performance and that electrical neuromodulation to entrain theta would improve cognition specifically in injured rats. Rats received a pilocarpine (n=30) or saline injection (n=27) and unilateral bi-polar electrodes were implanted into the medial septum and hippocampus the following day...
February 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28144451/protective-effect-of-quinine-on-chemical-kindling-and-passive-avoidance-test-in-rats
#18
Zahra Faridkia, Parichehr Yaghmaei, Marjan Nassiri-Asl
BACKGROUND: In humans, convulsive diseases such as temporal lobe epilepsy are usually accompanied by learning and memory impairments. In recent years, the role of gap junction channels as an important target of antiepileptic drugs has been studied and discussed. Quinine, as a gap junction blocker of connexin 36, can abolish ictal epileptiform activity in brain slices. OBJECTIVES: The role of quinine in memory retrieval in pentylenetetrazole (PTZ)-kindled rats was examined using a step-through passive avoidance task...
September 2016: Iranian Red Crescent Medical Journal
https://www.readbyqxmd.com/read/28131931/reading-in-children-with-temporal-lobe-epilepsy-a-systematic-review
#19
REVIEW
Suncica Lah, Anne Castles, Mary Lou Smith
OBJECTIVE: Children with epilepsy have higher rates of reading difficulties compared to the general population. Reading difficulties are associated with lower academic attainments, higher school drop-out rates, greater risk of unemployment, lower income, and poorer adjustment. We examined the literature dealing with reading in children with the most common type of focal epilepsy, temporal lobe epilepsy (TLE), in relation to: presence of reading difficulties, contributing factors, and efficacy of treatments for reading difficulties...
January 26, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28111355/epigenetics-in-epilepsy
#20
REVIEW
K Kobow, I Blümcke
Approximately 50 million people have epilepsy, making it the most common chronic and severe neurological disease worldwide, with increased risk of mortality and psychological and socioeconomic consequences impairing quality of life. More than 30% of patients with epilepsy have inadequate control of their seizures with drug therapy. Any structural brain lesion can provoke epilepsy. However, progression of seizure activity as well as the development of drug-resistance remains difficult to predict, irrespective of the underlying epileptogenic condition, i...
January 19, 2017: Neuroscience Letters
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