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Epilepsy cognition

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https://www.readbyqxmd.com/read/28717415/chronic-antiepileptic-drug-use-and-functional-network-efficiency-a-functional-magnetic-resonance-imaging-study
#1
Tamar M van Veenendaal, Dominique M IJff, Albert P Aldenkamp, Richard H C Lazeron, Paul A M Hofman, Anton J A de Louw, Walter H Backes, Jacobus F A Jansen
AIM: To increase our insight in the neuronal mechanisms underlying cognitive side-effects of antiepileptic drug (AED) treatment. METHODS: The relation between functional magnetic resonance-acquired brain network measures, AED use, and cognitive function was investigated. Three groups of patients with epilepsy with a different risk profile for developing cognitive side effects were included: A "low risk" category (lamotrigine or levetiracetam, n = 16), an "intermediate risk" category (carbamazepine, oxcarbazepine, phenytoin, or valproate, n = 34) and a "high risk" category (topiramate, n = 5)...
June 28, 2017: World Journal of Radiology
https://www.readbyqxmd.com/read/28713243/synaptic-interactome-mining-reveals-p140cap-as-a-new-hub-for-psd-proteins-involved-in-psychiatric-and-neurological-disorders
#2
Annalisa Alfieri, Oksana Sorokina, Annie Adrait, Costanza Angelini, Isabella Russo, Alessandro Morellato, Michela Matteoli, Elisabetta Menna, Elisabetta Boeri Erba, Colin McLean, J Douglas Armstrong, Ugo Ala, Joseph D Buxbaum, Alfredo Brusco, Yohann Couté, Silvia De Rubeis, Emilia Turco, Paola Defilippi
Altered synaptic function has been associated with neurological and psychiatric conditions including intellectual disability, schizophrenia and autism spectrum disorder (ASD). Amongst the recently discovered synaptic proteins is p140Cap, an adaptor that localizes at dendritic spines and regulates their maturation and physiology. We recently showed that p140Cap knockout mice have cognitive deficits, impaired long-term potentiation (LTP) and long-term depression (LTD), and immature, filopodia-like dendritic spines...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28711815/geschwind-syndrome-in-frontotemporal-lobar-degeneration-neuroanatomical-and-neuropsychological-features-over-9-years
#3
Laura Veronelli, Sara J Makaretz, Megan Quimby, Bradford C Dickerson, Jessica A Collins
Geschwind Syndrome, a characteristic behavioral syndrome frequently described in patients affected by temporal lobe epilepsy (TLE), consists of the following features: hyper-religiosity, hypergraphia, hyposexuality, and irritability. Here we report the 9-year-clinical course of a case of Geschwind Syndrome that developed as a first and salient clinical expression of right temporal lobe variant of frontotemporal lobar degeneration (FTLD). Only one patient affected by frontotemporal dementia has previously been shown to present with Geschwind Syndrome...
June 27, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28708947/kv10-1-potassium-channel-from-the-brain-to-the-tumors
#4
Verna Cázares-Ordoñez, Luis A Pardo
<i>KCNH1</i> gene encodes the Kv10.1 (Eag1) ion channel, a member of the EAG (ether-à-go-go) family of voltage-gated potassium channels. Recent studies have demonstrated that <i>KCHN1</i> mutations are implicated in Temple-Baraitser and Zimmermann-Laband syndromes and other forms of developmental deficits that all present with mental retardation and epilepsy, suggesting that Kv10.1 might be important for cognitive development in human. Although Kv10.1 channel is mainly expressed in the mammalian brain, its ectopic expression occurs in 70% of human cancers...
July 14, 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/28703275/predictors-of-cognitive-function-in-patients-with-hypothalamic-hamartoma-following-stereotactic-radiofrequency-thermocoagulation-surgery
#5
Masaki Sonoda, Hiroshi Masuda, Hiroshi Shirozu, Yosuke Ito, Kohei Akazawa, Eishi Asano, Shigeki Kameyama
OBJECTIVE: To determine the predictors of cognitive function in patients with drug-resistant gelastic seizures (GS) related to hypothalamic hamartoma (HH) before and after stereotactic radiofrequency thermocoagulation surgery (SRT). METHODS: We studied 88 patients with HH who underwent SRT between October 1997 and December 2014. Patients received neuropsychological tests preoperatively and postoperatively. Based on the preoperative measures, patients were categorized as "high-functioning" (full-scale intelligence quotient [FSIQ] ≥70; n = 48) and "low-functioning" group (FSIQ <70; n = 40)...
July 13, 2017: Epilepsia
https://www.readbyqxmd.com/read/28699085/laser-interstitial-thermal-therapy-for-epilepsy
#6
REVIEW
Eric Prince, Shahin Hakimian, Andrew L Ko, Jeffrey G Ojemann, Michelle S Kim, John W Miller
MRI-guided laser interstitial thermal therapy (MgLiTT) uses a narrow diameter cannula to stereotactically target and heat deeper cerebral structures. This technique produces a precise lesion in the brain with great reliability because the localized tissue temperature change is monitored in real time. Because MgLiTT minimizes injury to surrounding brain, it appears to have a lower risk of affecting normal neurological function, and because it is done through a burr hole, there is less operative risk, less discomfort, and shorter hospitalizations...
September 2017: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/28697489/subjective-sleep-disturbance-in-chinese-adults-with-epilepsy-associations-with-affective-symptoms
#7
Yeru Shen, Mengmeng Zhang, Yu Wang, Lanlan Wang, Xiangjun Xu, Gairong Xiao, Jing Chen, Ting Zhang, Nong Zhou
BACKGROUND: As well as being a very common neurological disease worldwide, epilepsy significantly impairs patients' emotional, behavioral, and cognitive functioning. Sleep disturbances are the most frequent complaint in patients with epilepsy. The present study assesses the impact of a range of affective symptoms on subjective sleep quality and sleep disturbances in Chinese adults with epilepsy. METHODS: Adults with epilepsy who visited our epilepsy clinic from July 2015 to March 2016 were enrolled in our study...
July 1, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28690234/-pcdh19-gene-mutations-lead-to-epilepsy-with-mental-retardation-limited-to-females-in-2-cases-and-literature-review
#8
Li Yang, Ahmed Arafat, Jing Peng, Chen Chen, Yuping Ma, Fei Yin
Epilepsy with mental retardation limited to females (EFMR) is a syndrome characterized by early onset heat-sensitive epilepsy of infancy or early childhood and generally limited to females, which previously reported that the cadherin gene superfamily subtype protocadherin 19 (PCDH19) gene is its pathogenic gene. We retrospectively analyzed the clinical data for 2 cases of EFMR patients with PCDH19 mutation diagnosed by Department of Pediatric Neurology of Xiangya Hospital, Central South University in 2015. Literature on PubMed, OMIM and HGMD relevant to this syndrome was reviewed, and the clinical characteristics were summarized accordingly...
June 28, 2017: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/28689466/early-diagnosis-and-treatment-of-lennox-gastaut-syndrome
#9
Trevor Resnick, Raj D Sheth
Lennox-Gastaut syndrome (LGS) is a severe form of childhood-onset epilepsy associated with high morbidity and mortality. The peak period for manifestations of Lennox-Gastaut syndrome is between ages 3 and 5 years, a time of critical brain development and corresponding vulnerability to the electroclinical dysfunction arising from Lennox-Gastaut syndrome. Diagnosis is based on a triad of symptoms: multiple seizure types, cognitive impairment, and slow spike-and-wave pattern on electroencephalography. In practice, Lennox-Gastaut syndrome presentation is diverse, and there may be a delay between initial symptoms and emergence of the full triad of clinical features...
January 1, 2017: Journal of Child Neurology
https://www.readbyqxmd.com/read/28689294/cerebellar-disease-associated-with-anti-glutamic-acid-decarboxylase-antibodies-review
#10
REVIEW
José Fidel Baizabal-Carvallo, Marlene Alonso-Juarez
Several neurological syndromes have been recognized associated to GAD antibodies. Among those disorders, cerebellar ataxia (CA) is one of the most common, along with stiff-person syndrome. Patients with GAD associated CA present with a progressive pancerebellar syndrome, with a subacute or chronic evolution, along with other neurological manifestations such as stiffness, oculomotor dysfunction, epilepsy, and cognitive dysfunction. These symptoms may be preceded by the so-called "brainstem attacks", where manifestations consistent with transient dysfunction of the brainstem may be observed...
July 8, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28687854/neuroprotective-effects-of-vitamin-d-alone-or-in-combination-with-lamotrigine-against-lithium-pilocarpine-model-of-status-epilepticus-in-rats
#11
Amal M Mahfoz, Ali F Abdel-Wahab, Mohamed A Afify, Naiyer Shahzad, Ibrahim A A Ibrahim, Naser A ElSawy, Ghazi A Bamagous, Saeed S Al Ghamdi
Status epilepticus (SE) is considered one of the major serious forms of epilepsy with high mortality rate. Since the currently available antiepileptic drugs have low efficacy and high adverse effects, new more efficient and safe therapies are critically needed. There is increasing evidence supporting dietary and alternative therapies for epilepsy, including the ketogenic diet, modified Atkins diet, and omega-3 fatty acids. Recent studies have shown significant prophylactic and therapeutic potential of vitamin D (vit-D) use in many neurological disorders...
July 7, 2017: Naunyn-Schmiedeberg's Archives of Pharmacology
https://www.readbyqxmd.com/read/28687527/the-first-patient-with-sporadic-x-linked-intellectual-disability-with-de-novo-zdhhc9-mutation-identified-by-targeted-next-generation-sequencing
#12
Ji Yoon Han, In Goo Lee, Soyoung Shin, Myungshin Kim, Ja Hyun Jang, Joonhong Park
X-linked intellectual disability (XLID) is a genetically heterogeneous disorder involving more than 100 genes known to date. Here, we describe a Korean male infant with global developmental delay. He had neither facial dysmorphism nor skeletal abnormalities. Bayley scale of infant and toddler development third edition (Bayley-III) measured at age of 2 years revealed marked global developmental delays without Marfanoid habitus, structural brain abnormalities, or epilepsy. The patient's cognitive, motor, and language developmental ages were 8-9 months, 12 months, and 9 months, respectively...
July 4, 2017: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/28686619/rare-variants-of-small-effect-size-in-neuronal-excitability-genes-influence-clinical-outcome-in-japanese-cases-of-scn1a-truncation-positive-dravet-syndrome
#13
Michael F Hammer, Atsushi Ishii, Laurel Johnstone, Alexander Tchourbanov, Branden Lau, Ryan Sprissler, Brian Hallmark, Miao Zhang, Jin Zhou, Joseph Watkins, Shinichi Hirose
Dravet syndrome (DS) is a rare, devastating form of childhood epilepsy that is often associated with mutations in the voltage-gated sodium channel gene, SCN1A. There is considerable variability in expressivity within families, as well as among individuals carrying the same primary mutation, suggesting that clinical outcome is modulated by variants at other genes. To identify modifier gene variants that contribute to clinical outcome, we sequenced the exomes of 22 individuals at both ends of a phenotype distribution (i...
2017: PloS One
https://www.readbyqxmd.com/read/28676574/aberrant-sodium-channel-currents-and-hyperexcitability-of-medial-entorhinal-cortex-neurons-in-a-mouse-model-of-scn8a-encephalopathy
#14
Matteo Ottolini, Bryan S Barker, Ronald P Gaykema, Miriam H Meisler, Manoj K Patel
SCN8A encephalopathy, or early infantile epileptic encephalopathy 13 (EIEE13), is caused predominantly by de novo gain-of-function mutations in the voltage-gated sodium (Na) channel Nav1.6. Affected individuals suffer from refractory seizures, developmental delay, cognitive disability and elevated risk of sudden unexpected death in epilepsy (SUDEP). A knock-in mouse model carrying the patient mutation p.Asn1768Asp (N1768D) reproduces many features of the disorder including spontaneous seizures and SUDEP. We used the mouse model to examine the effects of the mutation on layer II stellate neurons of the medial entorhinal cortex (mEC), which transmit excitatory input to the hippocampus...
July 4, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28675560/neuroinflammation-imaging-markers-for-epileptogenesis
#15
Matthias J Koepp, Eric Årstad, Jens P Bankstahl, Stefanie Dedeurwaerdere, Alon Friedman, Heidrun Potschka, Teresa Ravizza, William H Theodore, Tallie Z Baram
Epilepsy can be a devastating disorder. In addition to debilitating seizures, epilepsy can cause cognitive and emotional problems with reduced quality of life. Therefore, the major aim is to prevent the disorder in the first place: identify, detect, and reverse the processes responsible for its onset, and monitor and treat its progression. Epilepsy often occurs following a latent period of months to years (epileptogenesis) as a consequence of a brain insult, such as head trauma, stroke, or status epilepticus...
July 2017: Epilepsia
https://www.readbyqxmd.com/read/28675559/neuroinflammation-in-epileptogenesis-insights-and-translational-perspectives-from-new-models-of-epilepsy
#16
Melissa L Barker-Haliski, Wolfgang Löscher, H Steve White, Aristea S Galanopoulou
Animal models have provided a wealth of information on mechanisms of epileptogenesis and comorbidogenesis, and have significantly advanced our ability to investigate the potential of new therapies. Processes implicating brain inflammation have been increasingly observed in epilepsy research. Herein we discuss the progress on animal models of epilepsy and comorbidities that inform us on the potential role of inflammation in epileptogenesis and comorbidity pathogenesis in rodent models of West syndrome and the Theiler's murine encephalomyelitis virus (TMEV) mouse model of viral encephalitis-induced epilepsy...
July 2017: Epilepsia
https://www.readbyqxmd.com/read/28673533/successful-corpus-callosotomy-for-doose-syndrome
#17
Sotaro Kanai, Tohru Okanishi, Mitsuyo Nishimura, Kentaro Iijima, Takuya Yokota, Tomohiro Yamazoe, Ayataka Fujimoto, Hideo Enoki, Takamichi Yamamoto
Doose syndrome (epilepsy with myoclonic-atonic seizures) is an epilepsy syndrome with an incidence of approximately 1-2% of childhood-onset epilepsies. Although this syndrome is associated with multiple types of generalized seizures, the diagnosis is based on the presence of myoclonic-atonic seizures. Eighteen percent of patients have refractory seizures and intellectual disabilities. There have, however, been a few reports on the efficacy of surgical treatment for Doose syndrome. We describe a case of Doose syndrome in a 10-year-old boy...
June 30, 2017: Brain & Development
https://www.readbyqxmd.com/read/28669013/narrative-medicine-perspectives-on-patient-identity-and-integrative-care-in-neuro-oncology
#18
Robert B Slocum, Tracy A Howard, John L Villano
Narrative Medicine sessions can encourage patients to rediscover personal identity and meaning by telling or writing their stories. We explored this process to improve care and quality of life for brain cancer patients in an academic neuro-oncology program. Brain cancer and its treatments may threaten a patient's quality of life and sense of self in many ways, including impaired cognitive skills, loss of memory, reduced coordination, and limited capacity for self-expression. The impact of symptoms and side effects on quality of life must be evaluated in terms of each patient's identity and may be understood in terms of each patient's story...
July 1, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28666338/interictal-epileptiform-activity-outside-the-seizure-onset-zone-impacts-cognition
#19
Hoameng Ung, Christian Cazares, Ameya Nanivadekar, Lohith Kini, Joost Wagenaar, Danielle Becker, Abba Krieger, Timothy Lucas, Brian Litt, Kathryn A Davis
Cognitive deficits are common among epilepsy patients. In these patients, interictal epileptiform discharges, also termed spikes, are seen routinely on electroencephalography and believed to be associated with transient cognitive impairments. In this study, we investigated the effect of spikes on memory encoding and retrieval, taking into account the spatial distribution of spikes in relation to the seizure onset zone as well as anatomical regions of the brain. Sixty-seven patients with medication refractory epilepsy undergoing continuous intracranial electroencephalography monitoring engaged in a delayed free recall task to test short-term memory...
June 27, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28666193/efficacy-of-adjunctive-vagus-nerve-stimulation-in-patients-with-dravet-syndrome-a-meta-analysis-of-68-patients
#20
REVIEW
Maxine Dibué-Adjei, Igor Fischer, Hans-Jakob Steiger, Marcel Alexander Kamp
RATIONALE: Dravet Syndrome (DS) is a severe epileptic encephalopathy of childhood involving intractable seizures, recurrent status epilepticus and cognitive decline. Because DS is a rare disease, available data is limited and evidence-based treatment guidelines are lacking. Vagus nerve stimulation (VNS) is an established neurostimulation treatment for intractable epilepsy, however little evidence is published on its efficacy in patients with DS. METHODS: We performed a meta-analysis of all peer-reviewed English language studies reporting seizure outcomes of patients with DS treated with adjunctive vagus nerve stimulation...
June 17, 2017: Seizure: the Journal of the British Epilepsy Association
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