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https://www.readbyqxmd.com/read/28330972/fatal-cerebral-edema-with-status-epilepticus-in-children-with-dravet-syndrome-report-of-5-cases
#1
Kenneth A Myers, Jacinta M McMahon, Simone A Mandelstam, Mark T Mackay, Renate M Kalnins, Richard J Leventer, Ingrid E Scheffer
Dravet syndrome (DS) is a well-recognized developmental and epileptic encephalopathy associated with SCN1A mutations and 15% mortality by 20 years. Although over half of cases succumb to sudden unexpected death in epilepsy, the cause of death in the remainder is poorly defined. We describe the clinical, radiologic, and pathologic characteristics of a cohort of children with DS and SCN1A mutations who developed fatal cerebral edema causing mass effect after fever-associated status epilepticus. Cases were identified from a review of children with DS enrolled in the Epilepsy Genetics Research Program at The University of Melbourne, Austin Health, who died after fever-associated status epilepticus...
April 2017: Pediatrics
https://www.readbyqxmd.com/read/28681064/lipoid-proteinosis-a-previously-unrecognized-mutation-and-therapeutic-response-to-acitretin
#2
Claudia Carnevale, Daniele Castiglia, Andrea Diociaiuti, Vittoria Proto, Simona Giancristoforo, Renata Boldrini, Giovanna Zambruno, Maya El Hachem
No abstract text is available yet for this article.
November 15, 2017: Acta Dermato-venereologica
https://www.readbyqxmd.com/read/29054897/lipoid-proteinosis
#3
Sanjay Singh, Setu Mittal, Anju Bhari, Neetu Bhari
No abstract text is available yet for this article.
October 20, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28685839/lipoid-proteinosis-a-case-with-distinct-histopathological-and-radiological-findings
#4
Balvinder Kaur Brar, Sarina Jain, Sukhmani Kaur Brar
Lipoid proteinosis is a rare inherited genodermatosis characterized by hyaline deposits in various tissues. Clinically, it manifests with cutaneous as well as extracutaneous features. Periodic acid-Schiff (PAS)-reactive hyaline deposits in the upper dermis, with localization around blood vessels and eccrine sweat glands, in particular, is the histopathological hallmark finding. On brain imaging, bilateral symmetrical temporal lobe calcifications are considered to be pathognomonic of this disorder. We report a case of lipoid proteinosis in which hyaline deposits were present in the papillary and reticular dermis, without being seen at the periphery of eccrine sweat glands, along with dystrophic calcification...
October 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28522451/ada2-deficiency-dada2-as-an-unrecognised-cause-of-early-onset-polyarteritis-nodosa-and-stroke-a-multicentre-national-study
#5
MULTICENTER STUDY
Roberta Caorsi, Federica Penco, Alice Grossi, Antonella Insalaco, Alessia Omenetti, Maria Alessio, Giovanni Conti, Federico Marchetti, Paolo Picco, Alberto Tommasini, Silvana Martino, Clara Malattia, Romina Gallizi, Rosa Anna Podda, Annalisa Salis, Fernanda Falcini, Francesca Schena, Francesca Garbarino, Alessia Morreale, Manuela Pardeo, Claudia Ventrici, Chiara Passarelli, Qing Zhou, Mariasavina Severino, Carlo Gandolfo, Gianluca Damonte, Alberto Martini, Angelo Ravelli, Ivona Aksentijevich, Isabella Ceccherini, Marco Gattorno
OBJECTIVES: To analyse the prevalence of CECR1 mutations in patients diagnosed with early onset livedo reticularis and/or haemorrhagic/ischaemic strokes in the context of inflammation or polyarteritis nodosa (PAN). Forty-eight patients from 43 families were included in the study. METHODS: Direct sequencing of CECR1 was performed by Sanger analysis. Adenosine deaminase 2 (ADA2) enzymatic activity was analysed in monocyte isolated from patients and healthy controls incubated with adenosine and with or without an ADA1 inhibitor...
October 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/15054399/a-novel-point-mutation-in-the-mitochondrial-trna-trp-gene-produces-a-neurogastrointestinal-syndrome
#6
Katharina Maniura-Weber, Robert W Taylor, Margaret A Johnson, Zofia Chrzanowska-Lightowlers, Andrew A M Morris, Charles P J Charlton, Douglass M Turnbull, Laurence A Bindoff
We report a novel, heteroplasmic point mutation in the mitochondrial tRNA for tryptophan at position 5532. The mutation was present in all the tissues studied and segregated with the biochemical defect, with higher levels of mutation present in cytochrome c oxidase-deficient muscle fibres. The patient manifested a neurogastrointestinal syndrome with features including failure to thrive, psychomotor retardation, ophthalmoplegia, sensorineural deafness and encephalopathy together with vomiting, diarrhoea and colitis...
June 2004: European Journal of Human Genetics: EJHG
https://www.readbyqxmd.com/read/28955728/hyperventilation-athetosis-in-asxl3-deficiency-bainbridge-ropers-syndrome
#7
Rubina Dad, Susan Walker, Stephen W Scherer, Muhammad Jawad Hassan, Suk Yun Kang, Berge A Minassian
No abstract text is available yet for this article.
October 2017: Neurology. Genetics
https://www.readbyqxmd.com/read/28931646/genome-editing-technologies-and-their-potential-to-treat-neurologic-disease
#8
Nicolas N Madigan, Nathan P Staff, Anthony J Windebank, Eduardo E Benarroch
No abstract text is available yet for this article.
October 17, 2017: Neurology
https://www.readbyqxmd.com/read/28892063/interpreting-short-tandem-repeat-variations-in-humans-using-mutational-constraint
#9
Melissa Gymrek, Thomas Willems, David Reich, Yaniv Erlich
Identifying regions of the genome that are depleted of mutations can distinguish potentially deleterious variants. Short tandem repeats (STRs), also known as microsatellites, are among the largest contributors of de novo mutations in humans. However, per-locus studies of STR mutations have been limited to highly ascertained panels of several dozen loci. Here we harnessed bioinformatics tools and a novel analytical framework to estimate mutation parameters for each STR in the human genome by correlating STR genotypes with local sequence heterozygosity...
October 2017: Nature Genetics
https://www.readbyqxmd.com/read/28902597/iridodonesis
#10
Dhaval Desai, A Jamil Tajik
A 65-year-old woman presented to a clinic to be evaluated for Marfan’s syndrome after her identical twin received a diagnosis of the disorder. Physical examination revealed iridodonesis, or "dancing" of the iris, which was elicited by rapid movement of the eye (see video). A 3/6 holodiastolic..
September 14, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/25542043/central-nervous-system-pet-ct-imaging-reveals-regional-impairments-in-pediatric-patients-with-wolfram-syndrome
#11
Agnieszka Zmyslowska, Bogdan Malkowski, Wojciech Fendler, Maciej Borowiec, Karolina Antosik, Piotr Gnys, Dobromila Baranska, Wojciech Mlynarski
Wolfram syndrome (WFS) is inherited as an autosomal recessive disease with main clinical features of diabetes mellitus, optic atrophy, diabetes insipidus and deafness. However, various neurological defects may also be detected. The aim of this study was to evaluate aspects of brain structure and function using PET-CT (positron emission tomography and computed tomography) and MRI (magnetic resonance imaging) in pediatric patients with WFS. Regional changes in brain glucose metabolism were measured using standardized uptake values (SUVs) based on images of (18F) fluorodeoxyglucose (FDG) uptake in 7 WFS patients aged 10...
2014: PloS One
https://www.readbyqxmd.com/read/23758206/mutations-in-coq2-in-familial-and-sporadic-multiple-system-atrophy
#12
MULTICENTER STUDY
(no author information available yet)
BACKGROUND: Multiple-system atrophy is an intractable neurodegenerative disease characterized by autonomic failure in addition to various combinations of parkinsonism, cerebellar ataxia, and pyramidal dysfunction. Although multiple-system atrophy is widely considered to be a nongenetic disorder, we previously identified multiplex families with this disease, which indicates the involvement of genetic components. METHODS: In combination with linkage analysis, we performed whole-genome sequencing of a sample obtained from a member of a multiplex family in whom multiple-system atrophy had been diagnosed on autopsy...
July 18, 2013: New England Journal of Medicine
https://www.readbyqxmd.com/read/27629089/a-genome-wide-association-study-in-multiple-system-atrophy
#13
MULTICENTER STUDY
Anna Sailer, Sonja W Scholz, Michael A Nalls, Claudia Schulte, Monica Federoff, T Ryan Price, Andrew Lees, Owen A Ross, Dennis W Dickson, Kin Mok, Niccolo E Mencacci, Lucia Schottlaender, Viorica Chelban, Helen Ling, Sean S O'Sullivan, Nicholas W Wood, Bryan J Traynor, Luigi Ferrucci, Howard J Federoff, Timothy R Mhyre, Huw R Morris, Günther Deuschl, Niall Quinn, Hakan Widner, Alberto Albanese, Jon Infante, Kailash P Bhatia, Werner Poewe, Wolfgang Oertel, Günter U Höglinger, Ullrich Wüllner, Stefano Goldwurm, Maria Teresa Pellecchia, Joaquim Ferreira, Eduardo Tolosa, Bastiaan R Bloem, Olivier Rascol, Wassilios G Meissner, John A Hardy, Tamas Revesz, Janice L Holton, Thomas Gasser, Gregor K Wenning, Andrew B Singleton, Henry Houlden
OBJECTIVE: To identify genetic variants that play a role in the pathogenesis of multiple system atrophy (MSA), we undertook a genome-wide association study (GWAS). METHODS: We performed a GWAS with >5 million genotyped and imputed single nucleotide polymorphisms (SNPs) in 918 patients with MSA of European ancestry and 3,864 controls. MSA cases were collected from North American and European centers, one third of which were neuropathologically confirmed. RESULTS: We found no significant loci after stringent multiple testing correction...
October 11, 2016: Neurology
https://www.readbyqxmd.com/read/28783728/correction-of-a-pathogenic-gene-mutation-in-human-embryos
#14
Hong Ma, Nuria Marti-Gutierrez, Sang-Wook Park, Jun Wu, Yeonmi Lee, Keiichiro Suzuki, Amy Koski, Dongmei Ji, Tomonari Hayama, Riffat Ahmed, Hayley Darby, Crystal Van Dyken, Ying Li, Eunju Kang, A-Reum Park, Daesik Kim, Sang-Tae Kim, Jianhui Gong, Ying Gu, Xun Xu, David Battaglia, Sacha A Krieg, David M Lee, Diana H Wu, Don P Wolf, Stephen B Heitner, Juan Carlos Izpisua Belmonte, Paula Amato, Jin-Soo Kim, Sanjiv Kaul, Shoukhrat Mitalipov
Genome editing has potential for the targeted correction of germline mutations. Here we describe the correction of the heterozygous MYBPC3 mutation in human preimplantation embryos with precise CRISPR-Cas9-based targeting accuracy and high homology-directed repair efficiency by activating an endogenous, germline-specific DNA repair response. Induced double-strand breaks (DSBs) at the mutant paternal allele were predominantly repaired using the homologous wild-type maternal gene instead of a synthetic DNA template...
August 24, 2017: Nature
https://www.readbyqxmd.com/read/28796848/gene-editing-using-crispr-why-the-excitement
#15
Anthony L Komaroff
No abstract text is available yet for this article.
August 22, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28165339/mutations-in-sphingosine-1-phosphate-lyase-cause-nephrosis-with-ichthyosis-and-adrenal-insufficiency
#16
Svjetlana Lovric, Sara Goncalves, Heon Yung Gee, Babak Oskouian, Honnappa Srinivas, Won-Il Choi, Shirlee Shril, Shazia Ashraf, Weizhen Tan, Jia Rao, Merlin Airik, David Schapiro, Daniela A Braun, Carolin E Sadowski, Eugen Widmeier, Tilman Jobst-Schwan, Johanna Magdalena Schmidt, Vladimir Girik, Guido Capitani, Jung H Suh, Noëlle Lachaussée, Christelle Arrondel, Julie Patat, Olivier Gribouval, Monica Furlano, Olivia Boyer, Alain Schmitt, Vincent Vuiblet, Seema Hashmi, Rainer Wilcken, Francois P Bernier, A Micheil Innes, Jillian S Parboosingh, Ryan E Lamont, Julian P Midgley, Nicola Wright, Jacek Majewski, Martin Zenker, Franz Schaefer, Navina Kuss, Johann Greil, Thomas Giese, Klaus Schwarz, Vilain Catheline, Denny Schanze, Ingolf Franke, Yves Sznajer, Anne S Truant, Brigitte Adams, Julie Désir, Ronald Biemann, York Pei, Elisabet Ars, Nuria Lloberas, Alvaro Madrid, Vikas R Dharnidharka, Anne M Connolly, Marcia C Willing, Megan A Cooper, Richard P Lifton, Matias Simons, Howard Riezman, Corinne Antignac, Julie D Saba, Friedhelm Hildebrandt
Steroid-resistant nephrotic syndrome (SRNS) causes 15% of chronic kidney disease cases. A mutation in 1 of over 40 monogenic genes can be detected in approximately 30% of individuals with SRNS whose symptoms manifest before 25 years of age. However, in many patients, the genetic etiology remains unknown. Here, we have performed whole exome sequencing to identify recessive causes of SRNS. In 7 families with SRNS and facultative ichthyosis, adrenal insufficiency, immunodeficiency, and neurological defects, we identified 9 different recessive mutations in SGPL1, which encodes sphingosine-1-phosphate (S1P) lyase...
March 1, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28794249/not-all-scn1a-epileptic-encephalopathies-are-dravet-syndrome-early-profound-thr226met-phenotype
#17
Lynette G Sadleir, Emily I Mountier, Deepak Gill, Suzanne Davis, Charuta Joshi, Catherine DeVile, Manju A Kurian, Simone Mandelstam, Elaine Wirrell, Katherine C Nickels, Hema R Murali, Gemma Carvill, Candace T Myers, Heather C Mefford, Ingrid E Scheffer
OBJECTIVE: To define a distinct SCN1A developmental and epileptic encephalopathy with early onset, profound impairment, and movement disorder. METHODS: A case series of 9 children were identified with a profound developmental and epileptic encephalopathy and SCN1A mutation. RESULTS: We identified 9 children 3 to 12 years of age; 7 were male. Seizure onset was at 6 to 12 weeks with hemiclonic seizures, bilateral tonic-clonic seizures, or spasms...
September 5, 2017: Neurology
https://www.readbyqxmd.com/read/28706481/adverse-effects-of-the-apolipoprotein-e-%C3%AE%C2%B54-allele-on-episodic-memory-task-switching-and-gray-matter-volume-in-healthy-young-adults
#18
Jianfei Nao, Hongzan Sun, Qiushi Wang, Shuang Ma, Shuo Zhang, Xiaoyu Dong, Ying Ma, Xiaoming Wang, Dongming Zheng
Many studies have shown that healthy elderly subjects and patients with Alzheimer's disease (AD) who carry the apolipoprotein E (ApoE) ε4 allele have worse cognitive function and more severe brain atrophy than non-carriers. However, it remains unclear whether this ApoE polymorphism leads to changes of cognition and brain morphology in healthy young adults. In this study, we used an established model to measure verbal episodic memory and core executive function (EF) components (response inhibition, working memory and task switching) in 32 ApoE ε4 carriers and 40 non-carriers between 20 years and 40 years of age...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28504703/polygenic-transmission-disequilibrium-confirms-that-common-and-rare-variation-act-additively-to-create-risk-for-autism-spectrum-disorders
#19
Daniel J Weiner, Emilie M Wigdor, Stephan Ripke, Raymond K Walters, Jack A Kosmicki, Jakob Grove, Kaitlin E Samocha, Jacqueline I Goldstein, Aysu Okbay, Jonas Bybjerg-Grauholm, Thomas Werge, David M Hougaard, Jacob Taylor, David Skuse, Bernie Devlin, Richard Anney, Stephan J Sanders, Somer Bishop, Preben Bo Mortensen, Anders D Børglum, George Davey Smith, Mark J Daly, Elise B Robinson
Autism spectrum disorder (ASD) risk is influenced by common polygenic and de novo variation. We aimed to clarify the influence of polygenic risk for ASD and to identify subgroups of ASD cases, including those with strongly acting de novo variants, in which polygenic risk is relevant. Using a novel approach called the polygenic transmission disequilibrium test and data from 6,454 families with a child with ASD, we show that polygenic risk for ASD, schizophrenia, and greater educational attainment is over-transmitted to children with ASD...
July 2017: Nature Genetics
https://www.readbyqxmd.com/read/28292732/alternating-hemiplegia-and-epilepsia-partialis-continua-a-new-phenotype-for-a-novel-compound-tbc1d24-mutation
#20
Francesca Ragona, Barbara Castellotti, Barbara Salis, Stefania Magri, Jacopo C DiFrancesco, Nardo Nardocci, Silvana Franceschetti, Cinzia Gellera, Tiziana Granata
Mutations in the TBC1D24 gene (MIM 613577) cause familial infantile myoclonic epilepsy (FIME; 605021) and early infantile epileptic encephalopathy-16 (EIEE16; 615338), both inherited with an autosomal recessive trait. The TBC1D24 gene encodes a member of the TBC family domain proteins, involved in cell signaling and oxidative stress resistance. We studied, by a Next Generation Sequencing (NGS) target re-sequencing gene approach, the DNA of a 5 year-old girl, affected by recurrent attacks of Alternating Hemiplegia (AH) and by recurrent episodes of Epilepsia Partialis Continua (EPC)...
April 2017: Seizure: the Journal of the British Epilepsy Association
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