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https://www.readbyqxmd.com/read/28734769/influence-of-epileptic-activity-during-sleep-on-cognitive-performance-in-benign-childhood-epilepsy-with-centrotemporal-spikes
#1
Andreea Nissenkorn, Adi Pappo, Yael Feldmann, Gali Heimer, Omer Bar-Yosef, Michal Tzadok, Orli Polack, Ayelet Bord, Miriam Levav, Bruria Ben-Zeev
BACKGROUND: Benign childhood epilepsy with centrotemporal spikes is benign childhood epilepsy, presenting between 4 and 10 years of age, characterized by typical clinical and EEG findings. Despite excellent prognosis, there are reports of mild cognitive, language, fine motor and behavioral difficulties. In its atypical form - electrical status epilepticus during slow wave sleep, continuous epileptiform activity during sleep lead to severe neurocognitive deterioration. Our objective was to investigate the influence of abundant sleep epileptiform activity, not fulfilling the criteria for electrical status epilepticus during Slow Wave Sleep, discovered randomly in children without overt intellectual impairment...
July 11, 2017: European Journal of Paediatric Neurology: EJPN
https://www.readbyqxmd.com/read/28734195/implementation-of-psychological-clinical-trials-in-epilepsy-review-and-guide
#2
REVIEW
Avani C Modi, Janelle Wagner, Aimee W Smith, Tanja S Kellermann, Rosa Michaelis
The International League Against Epilepsy (ILAE) Neuropsychiatry commission and United States Institute of Medicine report both identified cognitive and psychological comorbidities as a significant issue for individuals with epilepsy, with rates as high as 60%. However, there is a paucity of evidence-based treatments for many psychological conditions (e.g., learning disorders, cognitive disorders, behavioral disorders). Because of inherent challenges in the implementation of psychological therapy trials and specific considerations for the population with epilepsy, the focus of the current review was to provide guidance and recommendations to conduct psychological trials for individuals with epilepsy...
July 19, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28731266/a-randomized-double-blind-placebo-controlled-crossover-study-of-the-effects-of-levetiracetam-on-cognition-mood-and-balance-in-healthy-older-adults
#3
Mike R Schoenberg, Ruba S Rum, Katie E Osborn, Mary Ann Werz
OBJECTIVE: The cognitive and mood effects of levetiracetam (LEV) in older adults are not known. This study compared the cognitive and mood effects of LEV to placebo in healthy older adults. METHODS: Cognitive, mood, and balance variables were compared between LEV and placebo using a randomized, double-blind, placebo-controlled crossover study with two 5-week treatment periods. Healthy volunteers (n = 20) aged 65-80 (mean age 72.4) received either LEV or placebo in which the LEV target dose was 1,000 mg/day...
July 21, 2017: Epilepsia
https://www.readbyqxmd.com/read/28728081/brain-state-dependent-recruitment-of-high-frequency-oscillations-in-the-human-hippocampus
#4
Pablo Billeke, Tomas Ossandon, Marcelo Stockle, Marcela Perrone-Bertolotti, Philippe Kahane, Jean-Philippe Lachaux, Pablo Fuentealba
Ripples are high-frequency bouts of coordinated hippocampal activity believed to be crucial for information transfer and memory formation. We used intracortical macroelectrodes to record neural activity in the human hippocampus of awake subjects undergoing surgical treatment for refractory epilepsy and distinguished two populations of ripple episodes based on their frequency spectrum. The phase-coupling of one population, slow ripples (90-110 Hz), to cortical delta oscillations was differentially modulated by cognitive task; whereas the second population, fast ripples (130-170 Hz), was not seemingly correlated to local neural activity...
June 23, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28725190/reliability-of-eeg-interactions-differs-between-measures-and-is-specific-for-neurological-diseases
#5
Yvonne Höller, Kevin Butz, Aljoscha Thomschewski, Elisabeth Schmid, Andreas Uhl, Arne C Bathke, Georg Zimmermann, Santino O Tomasi, Raffaele Nardone, Wolfgang Staffen, Peter Höller, Markus Leitinger, Julia Höfler, Gudrun Kalss, Alexandra C Taylor, Giorgi Kuchukhidze, Eugen Trinka
Alterations of interaction (connectivity) of the EEG reflect pathological processes in patients with neurologic disorders. Nevertheless, it is questionable whether these patterns are reliable over time in different measures of interaction and whether this reliability of the measures is the same across different patient populations. In order to address this topic we examined 22 patients with mild cognitive impairment, five patients with subjective cognitive complaints, six patients with right-lateralized temporal lobe epilepsy, seven patients with left lateralized temporal lobe epilepsy, and 20 healthy controls...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28724747/interleukin-1-receptor-in-seizure-susceptibility-after-traumatic-injury-to-the-pediatric-brain
#6
Bridgette D Semple, Terence J O'Brien, Kayleen Gimlin, David K Wright, Shi Eun Kim, Pablo M Casillas-Espinosa, Kyria M Webster, Steven Petrou, Linda J Noble-Haeusslein
Epilepsy after pediatric traumatic brain injury (TBI) is associated with poor quality of life. This study aimed to characterize post-traumatic epilepsy in a mouse model of pediatric brain injury, and to evaluate the role of interleukin-1 (IL-1) signaling as a target for pharmacological intervention. Male mice received a controlled cortical impact or sham surgery at postnatal day 21, approximating a toddler-aged child. Mice were treated acutely with an IL-1 receptor antagonist (IL-1Ra; 100 mg/kg s.c.) or vehicle...
July 19, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28717415/chronic-antiepileptic-drug-use-and-functional-network-efficiency-a-functional-magnetic-resonance-imaging-study
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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