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Epileptic encephalopathies

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https://www.readbyqxmd.com/read/29681092/lipt1-deficiency-presenting-as-early-infantile-epileptic-encephalopathy-leigh-disease-and-secondary-pyruvate-dehydrogenase-complex-deficiency
#1
Robert C Stowe, Qin Sun, Sarah H Elsea, Fernando Scaglia
Lipoic acid is an essential cofactor for the mitochondrial 2-ketoacid dehydrogenase complexes and the glycine cleavage system. Lipoyltransferase 1 catalyzes the covalent attachment of lipoate to these enzyme systems. Pathogenic variants in LIPT1 gene have recently been described in four patients from three families, commonly presenting with severe lactic acidosis resulting in neonatal death and/or poor neurocognitive outcomes. We report a 2-month-old male with severe lactic acidosis, refractory status epilepticus, and brain imaging suggestive of Leigh disease...
May 2018: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/29679388/somatic-slc35a2-variants-in-the-brain-are-associated-with-intractable-neocortical-epilepsy
#2
Melodie R Winawer, Nicole G Griffin, Jorge Samanamud, Evan H Baugh, Dinesh Rathakrishnan, Senthilmurugan Ramalingam, David Zagzag, Catherine A Schevon, Patricia Dugan, Manu Hegde, Sameer A Sheth, Guy M McKhann, Werner K Doyle, Gerald A Grant, Brenda E Porter, Mohamad A Mikati, Carrie R Muh, Colin D Malone, Ann Marie R Bergin, Jurriaan M Peters, Danielle K McBrian, Alison M Pack, Cigdem I Akman, Christopher M LaCoursiere, Katherine M Keever, Joseph R Madsen, Edward Yang, Hart G W Lidov, Catherine Shain, Andrew S Allen, Peter Canoll, Peter B Crino, Annapurna H Poduri, Erin L Heinzen
OBJECTIVE Somatic variants are a recognized cause of epilepsy-associated focal malformations of cortical development (MCD). We hypothesized that somatic variants may underlie a wider range of focal epilepsy, including non-lesional focal epilepsy (NLFE). Through genetic analysis of brain tissue, we evaluated the role of somatic variation in focal epilepsy with and without MCD. METHODS We identified somatic variants through high-depth exome and ultra-high-depth candidate gene sequencing of DNA from epilepsy surgery specimens and leukocytes from 18 individuals with NLFE and 38 with focal MCD...
April 20, 2018: Annals of Neurology
https://www.readbyqxmd.com/read/29677576/early-mortality-in-scn8a-related-epilepsies
#3
Katrine M Johannesen, Elena Gardella, Ingrid Scheffer, Katherine Howell, Douglas M Smith, Ingo Helbig, Rikke S Møller, Guido Rubboli
SCN8A-related epilepsies are often severe developmental and epileptic encephalopathies. Seizures can be treatment resistant, and patients suffer from severe intellectual disability. Reports have suggested that SCN8A-related epilepsies have a high mortality with SUDEP as the major underlying cause. SUDEP is a catastrophic event, and the risk of occurrence should be correctly and carefully discussed with patients and families. We tested the hypothesis of SUDEP as the main cause of death in SCN8A-related epilepsies by reviewing all the currently reported patients with SCN8A...
April 13, 2018: Epilepsy Research
https://www.readbyqxmd.com/read/29671845/alphabet-soup-recurrent-de-novo-mutations-in-novel-genes-causing-developmental-and-epileptic-encephalopathies
#4
COMMENT
Sunita N Misra, Jennifer A Kearney
No abstract text is available yet for this article.
March 2018: Epilepsy Currents
https://www.readbyqxmd.com/read/29670486/utilizing-animal-models-of-infantile-spasms
#5
Chris G Dulla
Infantile spasms are a devastating epileptic encephalopathy characterized by early life spasms and later seizures. Clinical outcomes of infantile spasms are poor and therapeutic options are limited with significant adverse effects. Therefore, new strategies to treat infantile spasms are of the utmost importance. Animals models of infantile spasms are a critical component of developing new therapies. Here, we review current chronic animal models of infantile spasms and consider future advances that may help improve patient care, as well as our scientific understanding of this debilitating disease...
March 2018: Epilepsy Currents
https://www.readbyqxmd.com/read/29667327/novel-west-syndrome-candidate-genes-in-a-chinese-cohort
#6
Jing Peng, Ying Wang, Fang He, Chen Chen, Li-Wen Wu, Li-Fen Yang, Yu-Ping Ma, Wen Zhang, Zi-Qing Shi, Chao Chen, Kun Xia, Hui Guo, Fei Yin, Nan Pang
AIMS: West syndrome (WS) is a classic form of early infantile epileptic encephalopathy (EIEE) characterized by tonic spasms with clustering, arrest of psychomotor development, and hypsarrhythmia on electroencephalography. Genetic defects play a critical role in the pathology of WS, and 54 EIEE genes have been identified till date. This study was designed to uncover new candidate genes for West syndrome. METHODS: In this study, we recruited 56 Chinese families with WS of unknown etiology...
April 17, 2018: CNS Neuroscience & Therapeutics
https://www.readbyqxmd.com/read/29663568/abnormal-function-of-the-uba5-protein-in-a-case-of-early-developmental-and-epileptic-encephalopathy-with-suppression-burst
#7
Cécile Mignon-Ravix, Mathieu Milh, Charlotte Sophia Kaiser, Jens Daniel, Florence Riccardi, Pierre Cacciagli, Majdi Nagara, Tiffany Busa, Eva Liebau, Laurent Villard
Early myoclonic epilepsy or Aicardi syndrome (EME) is one of the most severe epileptic syndromes affecting neonates. We performed whole exome sequencing in a sporadic case affected by EME and his parents. In the proband we identified a homozygous missense variant in the ubiquitin-like modifier activating enzyme 5 (UBA5) gene, encoding a protein involved in post-translational modifications. Functional analysis of the UBA5 variant protein reveals that it is almost completely unable to perform its trans-thiolation activity...
April 16, 2018: Human Mutation
https://www.readbyqxmd.com/read/29656858/a-recurrent-de-novo-pacs2-heterozygous-missense-variant-causes-neonatal-onset-developmental-epileptic-encephalopathy-facial-dysmorphism-and-cerebellar-dysgenesis
#8
Heather E Olson, Nolwenn Jean-Marçais, Edward Yang, Delphine Heron, Katrina Tatton-Brown, Paul A van der Zwaag, Emilia K Bijlsma, Bryan L Krock, E Backer, Erik-Jan Kamsteeg, Margje Sinnema, Margot R F Reijnders, David Bearden, Amber Begtrup, Aida Telegrafi, Roelineke J Lunsing, Lydie Burglen, Gaetan Lesca, Megan T Cho, Lacey A Smith, Beth R Sheidley, Christelle Moufawad El Achkar, Phillip L Pearl, Annapurna Poduri, Cara M Skraban, Jennifer Tarpinian, Addie I Nesbitt, Dietje E Fransen van de Putte, Claudia A L Ruivenkamp, Patrick Rump, Nicolas Chatron, Isabelle Sabatier, Julitta De Bellescize, Laurent Guibaud, David A Sweetser, Jessica L Waxler, Klaas J Wierenga, Jean Donadieu, Vinodh Narayanan, Keri M Ramsey, Caroline Nava, Jean-Baptiste Rivière, Antonio Vitobello, Frédéric Tran Mau-Them, Christophe Philippe, Ange-Line Bruel, Yannis Duffourd, Laurel Thomas, Stefan H Lelieveld, Janneke Schuurs-Hoeijmakers, Han G Brunner, Boris Keren, Julien Thevenon, Laurence Faivre, Gary Thomas, Christel Thauvin-Robinet
Developmental and epileptic encephalopathies (DEEs) represent a large clinical and genetic heterogeneous group of neurodevelopmental diseases. The identification of pathogenic genetic variants in DEEs remains crucial for deciphering this complex group and for accurately caring for affected individuals (clinical diagnosis, genetic counseling, impacting medical, precision therapy, clinical trials, etc.). Whole-exome sequencing and intensive data sharing identified a recurrent de novo PACS2 heterozygous missense variant in 14 unrelated individuals...
April 10, 2018: American Journal of Human Genetics
https://www.readbyqxmd.com/read/29656099/hypsarrhythmia-in-epileptic-spasms-synchrony-in-chaos
#9
Vera Nenadovic, Robyn Whitney, Jason Boulet, Miguel A Cortez
PURPOSE: Hypsarrhythmia is an electroencephalographic pattern associated with epileptic spasms and West syndrome. West syndrome is a devastating epileptic encephalopathy, originating in infancy. Hypsarrhythmia has been deemed to be the interictal brain activity, while the electrodecremental event associated with the spasms is denoted as the ictal event. Though characterized as chaotic, asynchronous and disorganized based on visual inspection of the EEG, little is known of the dynamics of hypsarrhythmia and how it impacts the developmental arrest of these infants...
March 30, 2018: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/29656098/a-novel-piga-mutation-in-a-taiwanese-family-with-early-onset-epileptic-encephalopathy
#10
Wei-De Lin, I-Ching Chou, Fuu-Jen Tsai, Syuan-Yu Hong
PURPOSE: We report the first family with PIGA-associated epileptic encephalopathy in Taiwan and hope to elucidate its special phenotype and inheritance pattern. METHOD: We found a Taiwanese family with several members suffered from severe epileptic encephalopathy (ZY07, ZY01, ZY04). To determine the underlying etiology, whole exome sequencing was conducted. RESULTS: A single novel variant, NM_002641: c.356G > A, p.Arg119Gln, was identified in the X chromosome PIGA gene in our proband patient (ZY07)...
April 7, 2018: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/29644724/a-novel-missense-mutation-in-grin2a-causes-a-nonepileptic-neurodevelopmental-disorder
#11
Ana Fernández-Marmiesse, Hirofumi Kusumoto, Saray Rekarte, Iria Roca, Jin Zhang, Scott J Myers, Stephen F Traynelis, Mª Luz Couce, Luis Gutierrez-Solana, Hongjie Yuan
BACKGROUND: Mutations in the GRIN2A gene, which encodes the GluN2A (glutamate [NMDA] receptor subunit epsilon-1) subunit of the N-methyl-d-aspartate receptor, have been identified in patients with epilepsy-aphasia spectrum disorders, idiopathic focal epilepsies with centrotemporal spikes, and epileptic encephalopathies with severe developmental delay. However, thus far, mutations in this gene have not been associated with a nonepileptic neurodevelopmental disorder with dystonia. OBJECTIVES: The objective of this study was to identify the disease-causing gene in 2 siblings with neurodevelopmental and movement disorders with no epileptiform abnormalities...
April 11, 2018: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/29643517/-application-of-scalp-recorded-high-frequency-oscillations-in-epileptic-encephalopathy-with-continuous-spike-and-wave-during-sleep
#12
P Gong, Z X Yang, J Xue, P Qian, H P Yang, X Y Liu, K G Bian
OBJECTIVE: To investigate the clinical significance of high-frequency oscillations (HFOs) on scalp electroencephalography (EEG) in patients with epileptic encephalopathy with continuous spike-and-wave during sleep (CSWS). METHODS: Twenty-one CSWS patients treated for epilepsy from January 2006 to December 2016 in Pediatric Department of Peking University First Hospital were enrolled into the study. Selected clinical variables including gender, age parameters, seizure frequencies and antiepileptic drugs were compared between (a)...
April 18, 2018: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/29625812/scn2a-mutation-in-an-infant-presenting-with-migrating-focal-seizures-and-infantile-spasm-responsive-to-a-ketogenic-diet
#13
Da-Jyun Su, Jyh-Feng Lu, Li-Ju Lin, Jao-Shwann Liang, Kun-Long Hung
SCN2A mutations have been identified in various encephalopathy phenotypes, ranging from benign familial neonatal-infantile seizure (BFNIS) to more severe forms of epileptic encephalopathy such as Ohtahara syndrome or epilepsy of infancy with migrating focal seizure (EIMFS). Thus far, no particularly effective treatment is available for severe epileptic encephalopathy caused by SCN2A mutations in children. We present the case of a boy who developed seizures on the third day of life and received a diagnosis of EIMFS based on his clinical presentations and electroencephalography reports...
April 3, 2018: Brain & Development
https://www.readbyqxmd.com/read/29625363/off-label-use-and-manipulations-of-antiepileptic-drugs-in-children-analysis-of-the-outpatient-prescriptions-in-a-tertiary-center
#14
Mathieu Kuchenbuch, Nicole Chemaly, Kassem Mb Henniene, Anna Kaminska, Catherine Chiron, Rima Nabbout
OBJECTIVES: Little is known about off-label use and manipulations to achieve the prescribed dose of antiepileptic drugs (AEDs) in outpatient prescriptions. This study aimed to evaluate this practice in a tertiary center for child epilepsy. METHODS: We reviewed off-label use and manipulations of AEDs delivered to the outpatient's epilepsy clinic. Multivariate logistic regressions were used to determine the factors associated with off-label and manipulated uses. RESULTS: Five hundred eleven consultations generated 897 AED deliveries (1...
April 3, 2018: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29616377/male-secretory-breast-cancer-case-in-a-6-year-old-boy-with-a-peculiar-gene-duplication-and-review-of-the-literature
#15
REVIEW
M Ghilli, M D Mariniello, C Scatena, L Dosa, G Traficante, A Tamburini, C Caporalini, A M Buccoliero, F Facchini, L Colizzi, A Quattrini Li, E Landucci, G Manca, A G Naccarato, D Caramella, C Favre, M Roncella
PURPOSE: Secretory breast cancer (SBC) is one of the rarest breast cancer (BC), representing the majority of BC in childhood. Nevertheless, it elicits a lot of interest both for the peculiar morphology and the characteristic genetic features. Currently, there is no consensus on optimal treatment strategy. Therefore, it is useful to report every case in order to establish treatment algorithms. METHODS: We describe the case of a 6-year-old boy diagnosed with a SBC, with peculiar genomic and immunohistochemical features...
April 3, 2018: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/29606097/mucopolysaccharidosis-iiib-and-mild-skeletal-anomalies-coexistence-of-naglu-and-cyp26b1-missense-variations-in-the-same-patient-in-a-chinese-family
#16
Jinliang Li, Han Xie, Yuwu Jiang
BACKGROUND: Sanfilippo type B syndrome (mucopolysac-charidosis type IIIB; MPS IIIB) is an autosomal recessive lysosomal storage disorder. It is caused by a critically reduced α-2-acetamido-2-deoxy-D-glucoside acetamidodeoxy glucohydrolase (α-N-acetylglucosaminidase or NAGLU) activity. Recently, an autosomal recessive disorder of skeletal dysplasia associated with CYP26B1 was reported in three families, in which the patients were all homozygous variations. However, the co-occurrence of two rare diseases in a person is very rare...
April 2, 2018: BMC Medical Genetics
https://www.readbyqxmd.com/read/29603516/a-pigh-mutation-leading-to-gpi-deficiency-is-associated-with-developmental-delay-and-autism
#17
Thi Tuyet Mai Nguyen, Sonal Desai Mahida, Constance Smith-Hicks, Philippe M Campeau
We identified an individual with a homozygous missense variant (p.Ser103Pro) in a conserved residue of the GPI biosynthesis gene PIGH. This gene encodes an essential component of the phosphatidylinositol N-acetylglucosaminyltransferase complex, in the first step of the biosynthesis of glycosylphosphatidylinositol, a glycolipid anchor added to more than one hundred human proteins, several being critical for embryogenesis and neurological functions. The affected individual had hypotonia, moderate developmental delay, and autism...
March 30, 2018: Human Mutation
https://www.readbyqxmd.com/read/29597185/diazepam-for-outpatient-treatment-of-nonconvulsive-status-epilepticus-in-pediatric-patients-with-angelman-syndrome
#18
Lila Worden, Olivia Grocott, Amanda Tourjee, Fonda Chan, Ronald Thibert
Nonconvulsive status epilepticus (NCSE) is present in multiple pediatric neurogenetic syndromes with epileptic encephalopathies. While intravenous (IV) medications are used inpatient for treatment of critical illness-related NCSE, there is no consensus on treatment of ambulatory NCSE. Up to 50% of patients with Angelman syndrome (AS) have NCSE with myoclonic or atypical absence status. Here we report our experience in pediatric patients with AS and NCSE treated outpatient with a tapering course of oral diazepam...
March 26, 2018: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29588991/early-onset-epileptic-encephalopathy-and-severe-developmental-delay-in-an-association-with-de-novo-double-mutations-in-nf1-and-magel2
#19
Satoshi Akamine, Noriaki Sagata, Yasunari Sakai, Takahiro A Kato, Takeshi Nakahara, Yuki Matsushita, Osamu Togao, Akio Hiwatashi, Masafumi Sanefuji, Yoshito Ishizaki, Hiroyuki Torisu, Hirotomo Saitsu, Naomichi Matsumoto, Toshiro Hara, Akira Sawa, Shinichi Kano, Masutaka Furue, Shigenobu Kanba, Chad A Shaw, Shouichi Ohga
Advance in the exome-wide sequencing analysis contributes to identifying hundreds of genes that are associated with early-onset epileptic encephalopathy and neurodevelopmental disorders. On the basis of massive sequencing data, functional interactions among different genes are suggested to explain the common molecular pathway underlying the pathogenic process of these disorders. However, the relevance of such interactions with the phenotypic severity or variety in an affected individual remains elusive. In this report, we present a 45-year-old woman with neurofibromatosis type 1 (NF1), infantile-onset epileptic encephalopathy, and severe developmental delay...
March 2018: Epilepsia Open
https://www.readbyqxmd.com/read/29588985/ketogenic-parenteral-nutrition-in-17-pediatric-patients-with-epilepsy
#20
Anastasia Dressler, Nadja Haiden, Petra Trimmel-Schwahofer, Franz Benninger, Sharon Samueli, Gudrun Gröppel, Sina Spatzierer, Angelika Mühlebner, Klaus Abraham, Martha Feucht
Objective: Ketogenic parenteral nutrition (kPN) is indicated when enteral intake is temporarily limited or impossible, but evidence-based prescriptions are lacking. Objective was to evaluate the efficacy and safety of kPN in children with epileptic encephalopathies using a new computer-based algorithm for accurate component calculating. Methods: Children with epilepsy receiving kPN were included. A computer-based algorithm was established on the basis of guidelines of the European Society for Paediatric Gastroenterology, Hepatology and Nutrition (ESPGHAN): fat intake not exceeding 4 g/kg/day, age-adequate supply of protein, electrolytes, vitamins, and trace elements, but reduced carbohydrates...
March 2018: Epilepsia open
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