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https://www.readbyqxmd.com/read/28915549/prrt2-a-network-stability-gene
#1
EDITORIAL
Caterina Michetti, Anna Corradi, Fabio Benfenati
No abstract text is available yet for this article.
August 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28870817/-prrt2-mutation-and-infantile-convulsions
#2
M Mathot, D Lederer, S Gerard, E Gueulette, M Deprez
New genetic techniques have made it possible to better understand the implications of the PRRT2 gene (proline rich transmembrane protein 2) in various neurological disorders. Mutations within this gene are responsible for kinesigenic paroxysmal dyskinesias (PKD) as well as for benign familial infantile epilepsy (BFIE), a disease associating infantile convulsions and choreoathetosis (ICCA), a form of familial hemiplegic migraine (FHM type 4), paroxysmal benign torticollis of childhood, and episodic ataxia. We describe the case of an infant, carrying a mutation of the PRRT2 gene, with a classical presentation...
September 1, 2017: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/28865303/defects-at-the-crossroads-of-gabaergic-signaling-in-generalized-genetic-epilepsies
#3
REVIEW
Jing-Qiong Kang
Seizure disorders are very common and affect 3% of the general population. The recurrent unprovoked seizures that are also called epilepsies are highly diverse as to both underlying genetic basis and clinic presentations. Recent genetic advances and sequencing technologies indicate that many epilepsies previously thought to be without known causes, or idiopathic generalized epilepsies (IGEs), are virtually genetic epilepsy as they are caused by genetic variations. IGEs are estimated to account for ∼15-20% of all epilepsies...
August 26, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28761347/genetic-and-epigenetic-mechanisms-of-epilepsy-a-review
#4
REVIEW
Tian Chen, Mohan Giri, Zhenyi Xia, Yadu Nanda Subedi, Yan Li
Epilepsy is a common episodic neurological disorder or condition characterized by recurrent epileptic seizures, and genetics seems to play a key role in its etiology. Early linkage studies have localized multiple loci that may harbor susceptibility genes to epilepsy, and mutational analyses have detected a number of mutations involved in both ion channel and nonion channel genes in patients with idiopathic epilepsy. Genome-wide studies of epilepsy have found copy number variants at 2q24.2-q24.3, 7q11.22, 15q11...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28743840/prrt2-a-network-stability-gene
#5
EDITORIAL
Caterina Michetti, Anna Corradi, Fabio Benfenati
No abstract text is available yet for this article.
July 24, 2017: Oncotarget
https://www.readbyqxmd.com/read/28684951/the-role-of-prrt2-in-synaptic-transmission-may-not-be-so-benign
#6
COMMENT
Matthew C Weston
No abstract text is available yet for this article.
May 2017: Epilepsy Currents
https://www.readbyqxmd.com/read/28585534/one-step-generation-of-complete-gene-knockout-mice-and-monkeys-by-crispr-cas9-mediated-gene-editing-with-multiple-sgrnas
#7
Erwei Zuo, Yi-Jun Cai, Kui Li, Yu Wei, Bang-An Wang, Yidi Sun, Zhen Liu, Jiwei Liu, Xinde Hu, Wei Wei, Xiaona Huo, Linyu Shi, Cheng Tang, Dan Liang, Yan Wang, Yan-Hong Nie, Chen-Chen Zhang, Xuan Yao, Xing Wang, Changyang Zhou, Wenqin Ying, Qifang Wang, Ren-Chao Chen, Qi Shen, Guo-Liang Xu, Jinsong Li, Qiang Sun, Zhi-Qi Xiong, Hui Yang
The CRISPR/Cas9 system is an efficient gene-editing method, but the majority of gene-edited animals showed mosaicism, with editing occurring only in a portion of cells. Here we show that single gene or multiple genes can be completely knocked out in mouse and monkey embryos by zygotic injection of Cas9 mRNA and multiple adjacent single-guide RNAs (spaced 10-200 bp apart) that target only a single key exon of each gene. Phenotypic analysis of F0 mice following targeted deletion of eight genes on the Y chromosome individually demonstrated the robustness of this approach in generating knockout mice...
July 2017: Cell Research
https://www.readbyqxmd.com/read/28573975/benign-infantile-seizures-followed-by-autistic-regression-in-a-boy-with-16p11-2-deletion
#8
Roberta Milone, Angelo Valetto, Veronica Bertini, Federico Sicca
Benign infantile seizures (BIS) are usually a self-limiting condition, which may be associated with heterozygous mutations in the PRRT2 gene at chromosome 16p11.2. Here, we report a boy with a deletion in 16p11.2, presenting with BIS and typical neurodevelopment in the first year of life, unexpectedly followed by severe autistic regression. 16p11.2 deletions are typically associated with intellectual disability, autism, and language disorders, and only rarely with BIS. This clinical report shows that the neurodevelopmental prognosis in BIS patients may not always be benign, and suggests that array CGH screening should be considered for affected infants in order to rule out deletions at 16p11...
June 2, 2017: Epileptic Disorders: International Epilepsy Journal with Videotape
https://www.readbyqxmd.com/read/28566192/association-of-a-synonymous-scn1b-variant-affecting-splicing-efficiency-with-benign-familial-infantile-epilepsy-bfie
#9
Sunay Usluer, Melek Aslı Kayserili, Aslı Gündoğdu Eken, Uluc Yiş, Costin Leu, Janine Altmüller, Holger Thiele, Peter Nürnberg, Thomas Sander, S Hande Çağlayan
Benign Familial Infantile Epilepsy (BFIE) is clinically characterized by clusters of brief partial seizures progressing to secondarily generalized seizures with onset at the age of 3-7 months and with favorable outcome. PRRT2 mutations are the most common cause of BFIE, and found in about 80% of BFIE families. In this study, we analyzed a large multiplex BFIE family by linkage and whole exome sequencing (WES) analyses. Genome-wide linkage analysis revealed significant evidence for linkage in the chromosomal region 19p12-q13 (LOD score 3...
May 13, 2017: European Journal of Paediatric Neurology: EJPN
https://www.readbyqxmd.com/read/28550683/oncogenic-role-of-microrna-30b-5p-in-glioblastoma-through-targeting-proline-rich-transmembrane-protein-2
#10
Zhongjun Li, Junxiu Guo, Yujie Ma, Zhixiong Lin, Longbo Zhang
MicroRNAs (miRs) have been found to play promoting or suppressive roles in different human cancers. However, the exactregulatory mechanism of miR-30b in glioblastoma still remains unknown. Here we showed that the expression of miR-30b was significantly increased in glioblastoma tissues and cell lines. Moreover, high expression of miR-30b was significantly associated with shorter survival time of glioblastoma patients. Knockdown of miR-30b caused a significant reduction in the proliferation, migration, and invasion of U87 and A172 cells...
May 17, 2017: Oncology Research
https://www.readbyqxmd.com/read/28525812/clinical-characteristics-and-prrt2-gene-mutation-analysis-of-sporadic-patients-with-paroxysmal-kinesigenic-dyskinesia-in-china
#11
Yu Zhang, Lin Li, Wei Chen, Jing Gan, Zhen Guo Liu
OBJECTIVE: As a rare type of movement disorder, paroxysmal kinesigenic dyskinesia mainly affects children and is associated with PRRT2 gene mutation. The objective of our study is to identify whether the sporadic patients share the same genotype-phenotype correlations as familial patients in China. PATIENTS AND METHODS: We investigated the clinical characteristics and PRRT2 gene mutations of 15 sporadic patients with paroxysmal kinesigenic dyskinesia in china. The clinical and investigational data of our patients was recorded and analyzed meticulously...
August 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28479855/the-genetic-relationship-between-epilepsy-and-hemiplegic-migraine
#12
REVIEW
Yiqing Huang, Hai Xiao, Xingyue Qin, Yuan Nong, Donghua Zou, Yuan Wu
Epilepsy and migraine are common diseases of the nervous system and share genetic and pathophysiological mechanisms. Familial hemiplegic migraine is an autosomal dominant disease. It is often used as a model of migraine. Four genes often contain one or more mutations in both epilepsy and hemiplegic migraine patients (ie, CACNA1A, ATP1A2, SCN1A, and PRRT2). A better understanding of the shared genetics of epilepsy and hemiplegic migraine may reveal new strategic directions for research and treatment of both the disorders...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28397578/paroxysmal-kinesigenic-dyskinesia-like-phenotype-in-multiple-sclerosis
#13
Roxana Pop, Stefan Kipfer
In April 2015, a 20-year-old woman with multiple sclerosis (MS) presented with acute onset of repetitive abnormal postures and choreatic movements of the right arm, precipitated by voluntary movements (online video 1 and 2). Brain magnetic resonance imaging (MRI) showed a new active MS lesion involving the basal ganglia on the left side (Figure 1(a)). Intravenous steroid treatment resulted in rapid regression of this paroxysmal kinesigenic dyskinesia (PKD)-like hyperkinetic movement disorder. The patient became asymptomatic within 3 months...
April 1, 2017: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/28271496/genetics-of-migraine-insights-into-the-molecular-basis-of-migraine-disorders
#14
REVIEW
Heidi G Sutherland, Lyn R Griffiths
Migraine is a complex, debilitating neurovascular disorder, typically characterized by recurring, incapacitating attacks of severe headache often accompanied by nausea and neurological disturbances. It has a strong genetic basis demonstrated by rare migraine disorders caused by mutations in single genes (monogenic), as well as familial clustering of common migraine which is associated with polymorphisms in many genes (polygenic). Hemiplegic migraine is a dominantly inherited, severe form of migraine with associated motor weakness...
April 2017: Headache
https://www.readbyqxmd.com/read/28270566/orbitofrontal-neuroadaptations-and-cross-species-synaptic-biomarkers-in-heavy-drinking-macaques
#15
Sudarat Nimitvilai, Joachim D Uys, John J Woodward, Patrick K Randall, Lauren E Ball, Robert W Williams, Byron C Jones, Lu Lu, Kathleen A Grant, Patrick J Mulholland
Cognitive impairments, uncontrolled drinking, and neuropathological cortical changes characterize alcohol use disorder. Dysfunction of the orbitofrontal cortex (OFC), a critical cortical subregion that controls learning, decision-making, and prediction of reward outcomes, contributes to executive cognitive function deficits in alcoholic individuals. Electrophysiological and quantitative synaptomics techniques were used to test the hypothesis that heavy drinking produces neuroadaptations in the macaque OFC. Integrative bioinformatics and reverse genetic approaches were used to identify and validate synaptic proteins with novel links to heavy drinking in BXD mice...
March 29, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28192116/prrt2-inhibits-the-proliferation-of-glioma-cells-by-modulating-unfolded-protein-response-pathway
#16
Guanghui Bi, Jingfeng Yan, Shuzhen Sun, Xinhua Qu
Accumulating studies reported mutations in the gene encoding the proline-rich transmembrane protein 2 (PRRT2) to be causative for several paroxysmal neurological disorders, including paroxysmal kinesigenic dyskinesia (PKD), PKD combined with infantile seizures (ICCA), and benign familial infantile seizures (BFIS). However, the impact of PRRT2 in tumorigenesis is not known. Based on a large-scale data analysis, we found that PRRT2 was down-regulated in glioma tumor tissues compared with normal brain tissue. Dysregulation of PRRT2 was not induced by mutation, copy number variation and epigenetic modification, but modulated by microRNA-30a-5p...
April 1, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28064419/pharmacokinetics-and-pharmacogenetics-of-carbamazepine-in-children
#17
Natasa Djordjevic, Slobodan M Jankovic, Jasmina R Milovanovic
Although carbamazepine is one of the oldest anticonvulsant drugs, it is still heavily utilized for treatment of epilepsy in children. The aim of this article was to review the current knowledge about pharmacokinetics and pharmacogenetics of carbamazepine in children. The literature for this review was systematically searched for in the MEDLINE and SCINDEKS databases. Oral bioavailability of carbamazepine in children is about 75-85%, and it is approximately 75-85% bound to plasma proteins. Apparent volume of distribution is 1...
January 7, 2017: European Journal of Drug Metabolism and Pharmacokinetics
https://www.readbyqxmd.com/read/28018471/paroxysmal-kinesigenic-dyskinesia-in-a-patient-with-a-prrt2-mutation-and-centrotemporal-spike-discharges-on-electroencephalogram-case-report-of-a-10-year-old-girl
#18
Sun Young Seo, Su Jeong You
Coexistence of paroxysmal kinesigenic dyskinesia (PKD) with benign infantile convulsion (BIC) and centrotemporal spikes (CTS) is very rare. A 10-year-old girl presented with a 3-year history of frequent attacks of staggering while laughing and of suddenly collapsing while walking. Interictal electroencephalogram (EEG) revealed bilateral CTS, but no changes in EEG were observed during movement. The patient's medical history showed afebrile seizures 6 months after birth, while the family history showed that the patient's mother and relatives on the mother's side had similar dyskinesia...
November 2016: Korean Journal of Pediatrics
https://www.readbyqxmd.com/read/28007585/the-prrt2-knockout-mouse-recapitulates-the-neurological-diseases-associated-with-prrt2-mutations
#19
Caterina Michetti, Enrico Castroflorio, Ivan Marchionni, Nicola Forte, Bruno Sterlini, Francesca Binda, Floriana Fruscione, Pietro Baldelli, Flavia Valtorta, Federico Zara, Anna Corradi, Fabio Benfenati
Heterozygous and rare homozygous mutations in PRoline-Rich Transmembrane protein 2 (PRRT2) underlie a group of paroxysmal disorders including epilepsy, kinesigenic dyskinesia episodic ataxia and migraine. Most of the mutations lead to impaired PRRT2 expression and/or function. Recently, an important role for PRTT2 in the neurotransmitter release machinery, brain development and synapse formation has been uncovered. In this work, we have characterized the phenotype of a mouse in which the PRRT2 gene has been constitutively inactivated (PRRT2 KO)...
March 2017: Neurobiology of Disease
https://www.readbyqxmd.com/read/27920401/a-common-prrt2-mutation-in-familial-paroxysmal-kinesigenic-dyskinesia-in-hong-kong-a-case-series-of-16-patients
#20
C Y Law, W L Yeung, Y F Cheung, H F Chan, E Fung, J Hui, I Ok Yung, Y P Yuen, A Ok Chan, C W Lam
No abstract text is available yet for this article.
December 2016: Hong Kong Medical Journal, Xianggang Yi Xue za Zhi
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