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https://www.readbyqxmd.com/read/28510035/ketone-bodies-as-a-possible-adjuvant-to-ketogenic-diet-in-pdhc-deficiency-but-not-in-glut1-deficiency
#1
F Habarou, N Bahi-Buisson, E Lebigot, C Pontoizeau, M T Abi-Warde, A Brassier, K H Le Quan Sang, C Broissand, S Vuillaumier-Barrot, A Roubertie, A Boutron, C Ottolenghi, P de Lonlay
OBJECTIVE: Ketogenic diet is the first line therapy for neurological symptoms associated with pyruvate dehydrogenase deficiency (PDHD) and intractable seizures in a number of disorders, including GLUT1 deficiency syndrome (GLUT1-DS). Because high-fat diet raises serious compliance issues, we investigated if oral L,D-3-hydroxybutyrate administration could be as effective as ketogenic diet in PDHD and GLUT1-DS. METHODS: We designed a partial or total progressive substitution of KD with L,D-3-hydroxybutyrate in three GLUT1-DS and two PDHD patients...
May 17, 2017: JIMD Reports
https://www.readbyqxmd.com/read/28419980/evaluation-of-glut1-variation-in-non-acquired-focal-epilepsy
#2
Alexander Peeraer, John A Damiano, Susannah T Bellows, Ingrid E Scheffer, Samuel F Berkovic, Saul A Mullen, Michael S Hildebrand
Brain glucose transport is dependent on glucose transporter 1 (GLUT1), encoded by the solute carrier family 2 member 1 (SLC2A1) gene. Mutations in SLC2A1 cause GLUT1 deficiency which is characterized by a broad spectrum of neurological phenotypes including generalized epilepsy, motor disorders, developmental delay and microcephaly. Recent case reports suggest SLC2A1 mutations can contribute to non-acquired focal epilepsy (NAFE) but interrogation of a large patient cohort has not been reported. We studied 200 patients with NAFE (126 with temporal lobe epilepsy) comprising 104 females and 96 males with a mean age of onset of 18 years...
April 10, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28341645/paroxysmal-eye-head-movements-in-glut1-deficiency-syndrome
#3
Toni S Pearson, Roser Pons, Kristin Engelstad, Steven A Kane, Michael E Goldberg, Darryl C De Vivo
OBJECTIVE: To describe a characteristic paroxysmal eye-head movement disorder that occurs in infants with Glut1 deficiency syndrome (Glut1 DS). METHODS: We retrospectively reviewed the medical charts of 101 patients with Glut1 DS to obtain clinical data about episodic abnormal eye movements and analyzed video recordings of 18 eye movement episodes from 10 patients. RESULTS: A documented history of paroxysmal abnormal eye movements was found in 32/101 patients (32%), and a detailed description was available in 18 patients, presented here...
April 25, 2017: Neurology
https://www.readbyqxmd.com/read/28324109/sex-specific-life-course-changes-in-the-neuro-metabolic-phenotype-of-glut3-null-heterozygous-mice-ketogenic-diet-ameliorates-electroencephalographic-seizures-and-improves-sociability
#4
Yun Dai, Yuanzi Zhao, Masatoshi Tomi, Bo-Chul Shin, Shanthie Thamotharan, Andrey Mazarati, Raman Sankar, Elizabeth A Wang, Carlos Cepeda, Michael S Levine, Jingjing Zhang, Andrew Frew, Jeffry R Alger, Peter M Clark, Monica Sondhi, Sudatip Kositamongkol, Leah Leibovitch, Sherin U Devaskar
We tested the hypothesis that exposure of glut3+/- mice to a ketogenic diet ameliorates autism-like features, which include aberrant behavior and electrographic seizures. We first investigated the life course sex-specific changes in basal plasma-cerebrospinal fluid (CSF)-brain metabolic profile, brain glucose transport/uptake, glucose and monocarboxylate transporter proteins, and adenosine triphosphate (ATP) in the presence or absence of systemic insulin administration. Glut3+/- male but not female mice (5 months of age) displayed reduced CSF glucose/lactate concentrations with no change in brain Glut1, Mct2, glucose uptake or ATP...
April 1, 2017: Endocrinology
https://www.readbyqxmd.com/read/28281318/intracranial-myxoid-mesenchymal-tumors-with-ewsr1-creb-family-gene-fusions-myxoid-variant-of-angiomatoid-fibrous-histiocytoma-or-novel-entity
#5
Tejus A Bale, Angelica Oviedo, Harry Kozakewich, Caterina Giannini, Phani K Davineni, Keith Ligon, Sanda Alexandrescu
Intracranial myxoid mesenchymal tumor harboring EWSR1 fusions with CREB family of genes was recently described, and it resembles the myxoid variant of angiomatoid fibrous histiocytoma. We present three pediatric patients with intracranial EWSR1-rearranged myxoid mesenchymal neoplasm and provide a molecular genetic characterization of these tumors. Clinical histories and imaging results were reviewed. Histology, immunohistochemistry, EWSR1, FUS, NR4A3 fluorescence in situ hybridization (FISH), and next-generation sequencing (NGS) were performed...
March 9, 2017: Brain Pathology
https://www.readbyqxmd.com/read/27781560/precision-medicine-in-genetic-epilepsies-break-of-dawn
#6
REVIEW
Philipp Sebastian Reif, Meng-Han Tsai, Ingo Helbig, Felix Rosenow, Karl Martin Klein
Therapy with current antiepileptic drugs aims at reducing the likelihood of seizure occurrence rather than influencing the underlying disease process. Therefore, antiepileptic drugs have an anticonvulsant rather than antiepileptic property. Areas covered: The increasing identification of genetic causes for epilepsy over the recent years improves the understanding of the underlying epileptogenic process and allows for the possibility of directed therapeutic approaches. An ideal antiepileptic therapy consists of a drug which is able to influence the functional changes caused by a specific pathogenic variant...
April 2017: Expert Review of Neurotherapeutics
https://www.readbyqxmd.com/read/27725288/a-23-years-follow-up-study-identifies-glut1-deficiency-syndrome-initially-diagnosed-as-complicated-hereditary-spastic-paraplegia
#7
Marina Diomedi, Ziv Gan-Or, Fabio Placidi, Patrick A Dion, Anna Szuto, Mario Bengala, Guy A Rouleau, Gian Luigi Gigli
Glucose transporter 1 (GLUT1) deficiency syndrome (GLUT1DS) was initially described in the early 90s as a sporadic clinical condition, characterized by seizures, motor and intellectual impairment with variable clinical presentation, and without a known genetic cause. Although causative mutations in SLC2A1 were later identified and much more is known about the disease, it still remains largely underdiagnosed. In the current study, a previously described Italian family was re-analyzed using whole exome sequencing and clinically re-evaluated...
November 2016: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/27448186/cognitive-and-neurodevelopmental-comorbidities-in-paediatric-epilepsy
#8
REVIEW
Katherine C Nickels, Michael J Zaccariello, Lorie D Hamiwka, Elaine C Wirrell
Cognitive and behavioural comorbidities are often seen in children with epilepsy, and are more common and severe in refractory epilepsy. These comorbidities are associated with worse quality of life, increased behavioural and language problems and worse social skills, all of which adversely affect long-term psychosocial functioning. To enable early intervention and therapy, children and teens with epilepsy should be periodically screened for cognitive comorbidities. The location of the epileptic focus can, to a certain degree, predict the type(s) of comorbidity; however, the spectrum of disability is often broad, presumably because focal perturbations can cause network dysfunction...
August 2016: Nature Reviews. Neurology
https://www.readbyqxmd.com/read/27273526/use-of-modified-atkins-diet-in-glucose-transporter-type-1-deficiency-syndrome
#9
Sofiane Amalou, Domitille Gras, Adina Ilea, Marie-Odile Greneche, Laurent Francois, Vanina Bellavoine, Catherine Delanoe, Stéphane Auvin
AIM: Glucose transporter type 1 deficiency syndrome (GLUT1-DS) results from impaired glucose transport into the brain, and is treated with a ketogenic diet. A few reports have suggested effectiveness of treatment using the modified Atkins diet (MAD). We aimed to assess the efficacy of MAD as a treatment for GLUT1-DS. METHOD: We evaluated the efficacy of MAD in 10 patients (four males, six females; mean age at diagnosis [SD] 6.2y [1.7], min-max: 4mo-12y) with GLUT1-DS...
November 2016: Developmental Medicine and Child Neurology
https://www.readbyqxmd.com/read/26982753/glucose-transporter-type-1-deficiency-due-to-slc2a1-gene-mutations-a-rare-but-treatable-cause-of-metabolic-epilepsy-and-extrapyramidal-movement-disorder-own-experience-and-literature-review
#10
REVIEW
Elżbieta Szczepanik, Iwona Terczyńska, Małgorzata Kruk, Agata Lipiec, Ewa Dudko, Jolanta Tryfon, Marta Jurek, Dorota Hoffman-Zacharska
THE AIM: To present the molecular and clinical characteristics of three children with glucose deficiency syndrome, an inborn rare metabolic disease, caused by mutations in the SLC2A1 gene. MATERIAL AND METHODS: The investigation was carried out in three children: two girls and one boy showing symptoms of GLUT1 deficiency syndrome (GLUT1-DS). They were referred for SLC2A1 gene analysis. RESULTS: The presence of mutations in all of them was confirmed...
October 2015: Developmental Period Medicine
https://www.readbyqxmd.com/read/26923720/outcome-of-ketogenic-diets-in-glut1-deficiency-syndrome-in-japan-a-nationwide-survey
#11
Tatsuya Fujii, Yasushi Ito, Satoru Takahashi, Kuriko Shimono, Jun Natsume, Keiko Yanagihara, Hirokazu Oguni
OBJECTIVES: To evaluate the outcome of ketogenic diets (KDs) in patients with glucose transport type 1 deficiency syndrome (GLUT1DS) in Japan. METHODS: A nationwide survey for GLUT1DS was conducted by sending questionnaires to board-certified pediatric neurologists nationwide to obtain clinical and laboratory data. RESULTS: Among 39 patients whose diagnosis was confirmed molecularly or by the 3-O-methylglucose uptake assay, 31 were treated with KDs for longer than 1month...
August 2016: Brain & Development
https://www.readbyqxmd.com/read/26902182/severe-hypertriglyceridemia-in-glut1d-on-ketogenic-diet
#12
Joerg Klepper, Baerbel Leiendecker, Nicole Heussinger, Ekkehart Lausch, Friedrich Bosch
High-fat ketogenic diets are the only treatment available for Glut1 deficiency (Glut1D). Here, we describe an 8-year-old girl with classical Glut1D responsive to a 3:1 ketogenic diet and ethosuximide. After 3 years on the diet a gradual increase of blood lipids was followed by rapid, severe asymptomatic hypertriglyceridemia (1,910 mg/dL). Serum lipid apheresis was required to determine liver, renal, and pancreatic function. A combination of medium chain triglyceride-oil and a reduction of the ketogenic diet to 1:1 ratio normalized triglyceride levels within days but triggered severe myoclonic seizures requiring comedication with sultiam...
April 2016: Neuropediatrics
https://www.readbyqxmd.com/read/26811264/diagnosing-glucose-transporter-1-deficiency-at-initial-presentation-facilitates-early-treatment
#13
Cigdem Inan Akman, Julia Yu, Aliza Alter, Kristin Engelstad, Darryl C De Vivo
OBJECTIVE: To profile the initial clinical events of glucose transporter 1 deficiency syndrome (Glut1 DS) in order to facilitate the earliest possible diagnosis. STUDY DESIGN: We retrospectively reviewed 133 patients with Glut1 DS from a single institution. Family interviews and medical record reviews identified the first clinical event(s) reported by the caregivers. RESULTS: Average age of the first event was 8.15 ± 11.9 months (range: 0...
April 2016: Journal of Pediatrics
https://www.readbyqxmd.com/read/26803281/use-of-dietary-therapies-amongst-patients-with-glut1-deficiency-syndrome
#14
Hannah R Kass, S Parrish Winesett, Stacey K Bessone, Zahava Turner, Eric H Kossoff
PURPOSE: GLUT-1 deficiency syndrome (GLUT1DS) is a neurologic disorder manifesting as epilepsy, abnormal movements, and cognitive delay. The currently accepted treatment of choice is the classic 4:1 ratio ketogenic diet. METHODS: A 2-page survey was distributed to all attendees of a family-centered conference for GLUT1DS in July 2015. The surveys were completed by parents, collected anonymously, and information analyzed in a database. RESULTS: Surveys were received from 92 families, of which 90 (98%) had been treated with dietary therapies...
February 2016: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/26356281/-experience-of-using-ketogenic-diet-in-a-patient-with-glucose-transporter-1-deficiency-syndrome-a-case-report
#15
E G Lukyanova, S O Ayvazyan, K V Osipova, E A Pyreva, T N Sorvacheva
UNLABELLED: We present the experience of using the ketogenic diet (KD) in the treatment of pharmacoresistant epilepsy in a patient with glucose transporter deficiency syndrome type I (GLUT1). We observed a nine-year-old boy with refractory epilepsy with frequent multiple myoclonic seizures due to GLUT1. The high effectiveness of KD in the treatment of GLUT1 was demonstrated. By the 10th day from the beginning of KD, a complete relief of epileptic seizures and EEG abnormalities was achieved...
2015: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/26336901/glut1-deficiency-syndrome-absence-epilepsy-and-la-soupe-du-jour
#16
Anaïs Thouin, Douglas E Crompton
For some time, paediatric neurologists have recognised glucose transporter type 1 (GluT1) deficiency syndrome as a cause of intractable infantile seizures, microcephaly, developmental delay and hypoglycorrhachia in the presence of a normal plasma glucose. It is caused by mutations in the SLC2A1 gene, coding for GluT1, leading to a reduction in the available glucose transporter sites; it responds to the ketogenic diet. Recently, a wider spectrum of seizure syndromes have been associated with functional impairment of glucose transport caused by SLC2A1 mutations...
February 2016: Practical Neurology
https://www.readbyqxmd.com/read/26193382/from-splitting-glut1-deficiency-syndromes-to-overlapping-phenotypes
#17
Marie Hully, Sandrine Vuillaumier-Barrot, Christiane Le Bizec, Nathalie Boddaert, Anna Kaminska, Karine Lascelles, Pascale de Lonlay, Claude Cances, Vincent des Portes, Agathe Roubertie, Diane Doummar, Anne LeBihannic, Bertrand Degos, Anne de Saint Martin, Elisabeth Flori, Jean Michel Pedespan, Alice Goldenberg, Catherine Vanhulle, Soumeya Bekri, Anne Roubergue, Bénédicte Heron, Marie-Anne Cournelle, Alice Kuster, Alexis Chenouard, Marie-Noelle Loiseau, Vassili Valayannopoulos, Nicole Chemaly, Cyril Gitiaux, Nathalie Seta, Nadia Bahi-Buisson
INTRODUCTION: Glucose transporter type 1 deficiency syndrome (GLUT1DS) is a rare genetic disorder due to mutations or deletions in SLC2A1, resulting in impaired glucose uptake through the blood brain barrier. The classic phenotype includes pharmacoresistant epilepsy, intellectual deficiency, microcephaly and complex movement disorders, with hypoglycorrhachia, but milder phenotypes have been described (carbohydrate-responsive phenotype, dystonia and ataxia without epilepsy, paroxysmal exertion-induced dystonia)...
September 2015: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/26109259/ketogenic-diets-in-patients-with-inherited-metabolic-disorders
#18
REVIEW
S Scholl-Bürgi, A Höller, K Pichler, M Michel, E Haberlandt, D Karall
Ketogenic diets (KDs) are diets that bring on a metabolic condition comparable to fasting, usually without catabolism. Since the mid-1990s such diets have been widely used in patients with seizures/epilepsies, mostly children. This review focuses on the use of KDs in patients with various inherited metabolic disorders (IMD). In glucose transporter type 1 deficiency syndrome (GLUT1-DS) and pyruvate dehydrogenase complex (PDHc) deficiency, KDs are deemed the therapy of choice and directly target the underlying metabolic disorder...
July 2015: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/26088884/do-glut1-glucose-transporter-type-1-defects-exist-in-epilepsy-patients-responding-to-a-ketogenic-diet
#19
Felicitas Becker, Julian Schubert, Sarah Weckhuysen, Arvid Suls, Steffen Grüninger, Elisabeth Korn-Merker, Anne Hofmann-Peters, Jürgen Sperner, Helen Cross, Kerstin Hallmann, Christian E Elger, Wolfram S Kunz, René Madeleyen, Holger Lerche, Yvonne G Weber
In the recent years, several neurological syndromes related to defects of the glucose transporter type 1 (Glut1) have been descried. They include the glucose transporter deficiency syndrome (Glut1-DS) as the most severe form, the paroxysmal exertion-induced dyskinesia (PED), a form of spastic paraparesis (CSE) as well as the childhood (CAE) and the early-onset absence epilepsy (EOAE). Glut1, encoded by the gene SLC2A1, is the most relevant glucose transporter in the brain. All Glut1 syndromes respond well to a ketogenic diet (KD) and most of the patients show a rapid seizure control...
August 2015: Epilepsy Research
https://www.readbyqxmd.com/read/25914049/favourable-response-to-ketogenic-dietary-therapies-undiagnosed-glucose-1-transporter-deficiency-syndrome-is-only-one-factor
#20
Natasha E Schoeler, Judith Helen Cross, Suzanne Drury, Nicholas Lench, Jacinta M McMahon, Mark T MacKay, Ingrid E Scheffer, Josemir W Sander, Sanjay M Sisodiya
AIM: We aimed to determine whether response to ketogenic dietary therapies (KDT) was due to undiagnosed glucose transporter type 1 deficiency syndrome (GLUT1-DS). METHOD: Targeted resequencing of the SLC2A1 gene was completed in individuals without previously known GLUT1-DS who received KDT for their epilepsy. Hospital records were used to obtain demographic and clinical data. Response to KDT at various follow-up points was defined as seizure reduction of at least 50%...
October 2015: Developmental Medicine and Child Neurology
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