2019 |
Prabhakar, S; Cheah, P S; Zhang, X; Zinter, M; Gianatasio, M; Hudry, E; Bronson, R T; Kwiatkowski, D J; Stemmer-Rachamimov, A; Maguire, C A; Sena-Esteves, M; Tannous, B A; Breakefield, X O Long-Term Therapeutic Efficacy of Intravenous AAV-Mediated Hamartin Replacement in Mouse Model of Tuberous Sclerosis Type 1 Journal Article Molecular Therapy - Methods and Clinical Development, 15 , pp. 18-26, 2019, ISSN: 23290501, (cited By 2). Abstract | Links | BibTeX | Tags: Adeno Associated Virus, Adeno Associated Virus Vector, Animal Experiment, Animal Model, Article, Beta Actin, Blood Brain Barrier, Body Weight, Body Weight Gain, Brain Nerve Cell, Brain Ventricle, Cell Proliferation, Complementary DNA, Controlled Study, Cre Recombinase, Drug Efficacy, Female, Gene, Gene Replacement Therapy, Hamartin, HEK293 Cell Line, Hydrocephalus, Immunohistochemistry, Inverted Terminal Repeat, Long Term Care, Male, Motor Activity, Motor Performance, Mouse, Nonhuman, Priority Journal, Promoter Region, Protein Function, Protein Phosphorylation, Quantitative Analysis, Subventricular Zone, Survival Time, Tuberous Sclerosis, Tuberous Sclerosis Type 1, Vascularization, Viral Gene Delivery System @article{Prabhakar201918, title = {Long-Term Therapeutic Efficacy of Intravenous AAV-Mediated Hamartin Replacement in Mouse Model of Tuberous Sclerosis Type 1}, author = {S Prabhakar and P S Cheah and X Zhang and M Zinter and M Gianatasio and E Hudry and R T Bronson and D J Kwiatkowski and A Stemmer-Rachamimov and C A Maguire and M Sena-Esteves and B A Tannous and X O Breakefield}, url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85070908794&doi=10.1016%2fj.omtm.2019.08.003&partnerID=40&md5=b169187dde0d3b05f8a9d5295a4ad8c4}, doi = {10.1016/j.omtm.2019.08.003}, issn = {23290501}, year = {2019}, date = {2019-01-01}, journal = {Molecular Therapy - Methods and Clinical Development}, volume = {15}, pages = {18-26}, publisher = {Cell Press}, abstract = {Tuberous sclerosis complex (TSC) is a tumor suppressor syndrome caused by mutations in TSC1 or TSC2, encoding hamartin and tuberin, respectively. These proteins act as a complex that inhibits mammalian target of rapamycin (mTOR)-mediated cell growth and proliferation. Loss of either protein leads to overgrowth in many organs, including subependymal nodules, subependymal giant cell astrocytomas, and cortical tubers in the human brain. Neurological manifestations in TSC include intellectual disability, autism, hydrocephalus, and epilepsy. In a stochastic mouse model of TSC1 brain lesions, complete loss of Tsc1 is achieved in homozygous Tsc1-floxed mice in a subpopulation of neural cells in the brain by intracerebroventricular (i.c.v.) injection at birth of an adeno-associated virus (AAV) vector encoding Cre recombinase. This results in median survival of 38 days and brain pathology, including subependymal lesions and enlargement of neuronal cells. Remarkably, when these mice were injected intravenously on day 21 with an AAV9 vector encoding hamartin, most survived at least up to 429 days in apparently healthy condition with marked reduction in brain pathology. Thus, a single intravenous administration of an AAV vector encoding hamartin restored protein function in enough cells in the brain to extend lifespan in this TSC1 mouse model. © 2019}, note = {cited By 2}, keywords = {Adeno Associated Virus, Adeno Associated Virus Vector, Animal Experiment, Animal Model, Article, Beta Actin, Blood Brain Barrier, Body Weight, Body Weight Gain, Brain Nerve Cell, Brain Ventricle, Cell Proliferation, Complementary DNA, Controlled Study, Cre Recombinase, Drug Efficacy, Female, Gene, Gene Replacement Therapy, Hamartin, HEK293 Cell Line, Hydrocephalus, Immunohistochemistry, Inverted Terminal Repeat, Long Term Care, Male, Motor Activity, Motor Performance, Mouse, Nonhuman, Priority Journal, Promoter Region, Protein Function, Protein Phosphorylation, Quantitative Analysis, Subventricular Zone, Survival Time, Tuberous Sclerosis, Tuberous Sclerosis Type 1, Vascularization, Viral Gene Delivery System}, pubstate = {published}, tppubtype = {article} } Tuberous sclerosis complex (TSC) is a tumor suppressor syndrome caused by mutations in TSC1 or TSC2, encoding hamartin and tuberin, respectively. These proteins act as a complex that inhibits mammalian target of rapamycin (mTOR)-mediated cell growth and proliferation. Loss of either protein leads to overgrowth in many organs, including subependymal nodules, subependymal giant cell astrocytomas, and cortical tubers in the human brain. Neurological manifestations in TSC include intellectual disability, autism, hydrocephalus, and epilepsy. In a stochastic mouse model of TSC1 brain lesions, complete loss of Tsc1 is achieved in homozygous Tsc1-floxed mice in a subpopulation of neural cells in the brain by intracerebroventricular (i.c.v.) injection at birth of an adeno-associated virus (AAV) vector encoding Cre recombinase. This results in median survival of 38 days and brain pathology, including subependymal lesions and enlargement of neuronal cells. Remarkably, when these mice were injected intravenously on day 21 with an AAV9 vector encoding hamartin, most survived at least up to 429 days in apparently healthy condition with marked reduction in brain pathology. Thus, a single intravenous administration of an AAV vector encoding hamartin restored protein function in enough cells in the brain to extend lifespan in this TSC1 mouse model. © 2019 |
2018 |
Tsuchida, N; Hamada, K; Shiina, M; Kato, M; Kobayashi, Y; Tohyama, J; Kimura, K; Hoshino, K; Ganesan, V; Teik, K W; Nakashima, M; Mitsuhashi, S; Mizuguchi, T; Takata, A; Miyake, N; Saitsu, H; Ogata, K; Miyatake, S; Matsumoto, N GRIN2D variants in three cases of developmental and epileptic encephalopathy Journal Article Clinical Genetics, 94 (6), pp. 538-547, 2018, ISSN: 00099163, (cited By 4). Abstract | Links | BibTeX | Tags: Adolescent, Allele, Amino Acid Sequence, Amino Acid Substitution, Amino Terminal Sequence, Anemia, Antibiotic Agent, Antibiotic Therapy, Article, Atonic Seizure, Attention Deficit Disorder, Autism, Binding Affinity, Brain, Brain Atrophy, Carbamazepine, Case Report, Channel Gating, Chemistry, Children, Clinical Article, Clinical Feature, Clobazam, Clonazepam, Conformational Transition, Continuous Infusion, Contracture, Crystal Structure, Cysteine Ethyl Ester Tc 99m, Developmental Delay, Developmental Disorders, Electroencephalogram, Electroencephalography, Epilepsy, Epileptic Discharge, Ethosuximide, Eye Tracking, Febrile Convulsion, Female, Frontal Lobe Epilepsy, Gene, Gene Frequency, Genetic Variation, Genetics, Genotype, GRIN2D Protein, Heterozygosity, Home Oxygen Therapy, Human, Human Cell, Hydrogen Bond, Intellectual Impairment, Intelligence Quotient, Intractable Epilepsy, Ketamine, Lacosamide, Lamotrigine, Lennox Gastaut Syndrome, Levetiracetam, Magnetoencephalography, Male, Maternal Hypertension, Melatonin, Migraine, Missense Mutation, Molecular Dynamics, Molecular Dynamics Simulation, Mutation, Myoclonus Seizure, N Methyl Dextro Aspartic Acid Receptor, N Methyl Dextro Aspartic Acid Receptor 2D, N-Methyl-D-Aspartate, Neonatal Pneumonia, Neonatal Respiratory Distress Syndrome, Neuroimaging, Nuclear Magnetic Resonance Imaging, Phenobarbital, Premature Labor, Preschool, Preschool Child, Priority Journal, Protein Conformation, Proximal Interphalangeal Joint, Pyridoxine, Receptors, Respiratory Arrest, Sanger Sequencing, School Child, Single Photon Emission Computed Tomography, Sleep Disordered Breathing, Static Electricity, Stridor, Structure-Activity Relationship, Subglottic Stenosis, Superior Temporal Gyrus, Supramarginal Gyrus, Thiopental, Tonic Seizure, Valproic Acid, Wakefulness, Wechsler Intelligence Scale for Children, Whole Exome Sequencing @article{Tsuchida2018538, title = {GRIN2D variants in three cases of developmental and epileptic encephalopathy}, author = {N Tsuchida and K Hamada and M Shiina and M Kato and Y Kobayashi and J Tohyama and K Kimura and K Hoshino and V Ganesan and K W Teik and M Nakashima and S Mitsuhashi and T Mizuguchi and A Takata and N Miyake and H Saitsu and K Ogata and S Miyatake and N Matsumoto}, url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85056487337&doi=10.1111%2fcge.13454&partnerID=40&md5=f0d32670db57261820bc244943cffd62}, doi = {10.1111/cge.13454}, issn = {00099163}, year = {2018}, date = {2018-01-01}, journal = {Clinical Genetics}, volume = {94}, number = {6}, pages = {538-547}, publisher = {Blackwell Publishing Ltd}, abstract = {N-methyl-d-aspartate (NMDA) receptors are glutamate-activated ion channels that are widely distributed in the central nervous system and essential for brain development and function. Dysfunction of NMDA receptors has been associated with various neurodevelopmental disorders. Recently, a de novo recurrent GRIN2D missense variant was found in two unrelated patients with developmental and epileptic encephalopathy. In this study, we identified by whole exome sequencing novel heterozygous GRIN2D missense variants in three unrelated patients with severe developmental delay and intractable epilepsy. All altered residues were highly conserved across vertebrates and among the four GluN2 subunits. Structural consideration indicated that all three variants are probably to impair GluN2D function, either by affecting intersubunit interaction or altering channel gating activity. We assessed the clinical features of our three cases and compared them to those of the two previously reported GRIN2D variant cases, and found that they all show similar clinical features. This study provides further evidence of GRIN2D variants being causal for epilepsy. Genetic diagnosis for GluN2-related disorders may be clinically useful when considering drug therapy targeting NMDA receptors. © 2018 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd}, note = {cited By 4}, keywords = {Adolescent, Allele, Amino Acid Sequence, Amino Acid Substitution, Amino Terminal Sequence, Anemia, Antibiotic Agent, Antibiotic Therapy, Article, Atonic Seizure, Attention Deficit Disorder, Autism, Binding Affinity, Brain, Brain Atrophy, Carbamazepine, Case Report, Channel Gating, Chemistry, Children, Clinical Article, Clinical Feature, Clobazam, Clonazepam, Conformational Transition, Continuous Infusion, Contracture, Crystal Structure, Cysteine Ethyl Ester Tc 99m, Developmental Delay, Developmental Disorders, Electroencephalogram, Electroencephalography, Epilepsy, Epileptic Discharge, Ethosuximide, Eye Tracking, Febrile Convulsion, Female, Frontal Lobe Epilepsy, Gene, Gene Frequency, Genetic Variation, Genetics, Genotype, GRIN2D Protein, Heterozygosity, Home Oxygen Therapy, Human, Human Cell, Hydrogen Bond, Intellectual Impairment, Intelligence Quotient, Intractable Epilepsy, Ketamine, Lacosamide, Lamotrigine, Lennox Gastaut Syndrome, Levetiracetam, Magnetoencephalography, Male, Maternal Hypertension, Melatonin, Migraine, Missense Mutation, Molecular Dynamics, Molecular Dynamics Simulation, Mutation, Myoclonus Seizure, N Methyl Dextro Aspartic Acid Receptor, N Methyl Dextro Aspartic Acid Receptor 2D, N-Methyl-D-Aspartate, Neonatal Pneumonia, Neonatal Respiratory Distress Syndrome, Neuroimaging, Nuclear Magnetic Resonance Imaging, Phenobarbital, Premature Labor, Preschool, Preschool Child, Priority Journal, Protein Conformation, Proximal Interphalangeal Joint, Pyridoxine, Receptors, Respiratory Arrest, Sanger Sequencing, School Child, Single Photon Emission Computed Tomography, Sleep Disordered Breathing, Static Electricity, Stridor, Structure-Activity Relationship, Subglottic Stenosis, Superior Temporal Gyrus, Supramarginal Gyrus, Thiopental, Tonic Seizure, Valproic Acid, Wakefulness, Wechsler Intelligence Scale for Children, Whole Exome Sequencing}, pubstate = {published}, tppubtype = {article} } N-methyl-d-aspartate (NMDA) receptors are glutamate-activated ion channels that are widely distributed in the central nervous system and essential for brain development and function. Dysfunction of NMDA receptors has been associated with various neurodevelopmental disorders. Recently, a de novo recurrent GRIN2D missense variant was found in two unrelated patients with developmental and epileptic encephalopathy. In this study, we identified by whole exome sequencing novel heterozygous GRIN2D missense variants in three unrelated patients with severe developmental delay and intractable epilepsy. All altered residues were highly conserved across vertebrates and among the four GluN2 subunits. Structural consideration indicated that all three variants are probably to impair GluN2D function, either by affecting intersubunit interaction or altering channel gating activity. We assessed the clinical features of our three cases and compared them to those of the two previously reported GRIN2D variant cases, and found that they all show similar clinical features. This study provides further evidence of GRIN2D variants being causal for epilepsy. Genetic diagnosis for GluN2-related disorders may be clinically useful when considering drug therapy targeting NMDA receptors. © 2018 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd |
2017 |
Shuib, S; Saaid, N N; Zakaria, Z; Ismail, J; Latiff, Abdul Z Duplication 17p11.2 (Potocki-Lupski syndrome) in a child with developmental delay Journal Article Malaysian Journal of Pathology, 39 (1), pp. 77-81, 2017, ISSN: 01268635, (cited By 0). Abstract | Links | BibTeX | Tags: Abnormalities, Agarose, Article, Autism, Autism Spectrum Disorders, Blood Culture, Case Report, Children, Chromosome 17, Chromosome Analysis, Chromosome Disorder, Chromosome Duplication, Chromosomes, Clinical Article, Comparative Genomic Hybridization, Developmental Delay, Electrophoresis, Female, Fluorescence, Fluorescence in Situ Hybridization, Gene, Gene Identification, Genetics, Genomic DNA, Human, In Situ Hybridization, Lymphocyte Culture, Microarray Analysis, Multiple, Multiple Malformation Syndrome, Pair 17, Phenotype, Potocki Lupski Syndrome, Preschool, Preschool Child, Procedures, RAI1 Gene, Ultraviolet Spectrophotometry @article{Shuib201777, title = {Duplication 17p11.2 (Potocki-Lupski syndrome) in a child with developmental delay}, author = {S Shuib and N N Saaid and Z Zakaria and J Ismail and Z Abdul Latiff}, url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85037028880&partnerID=40&md5=624b87d1e9ebac2d1bf66b4d30c0f6e9}, issn = {01268635}, year = {2017}, date = {2017-01-01}, journal = {Malaysian Journal of Pathology}, volume = {39}, number = {1}, pages = {77-81}, publisher = {Malaysian Society of Pathologists}, abstract = {Potocki-Lupski syndrome (PTLS), also known as duplication 17p11.2 syndrome, trisomy 17p11.2 or dup(17)(p11.2p11.2) syndrome, is a developmental disorder and a rare contiguous gene syndrome affecting 1 in 20,000 live births. Among the key features of such patients are autism spectrum disorder, learning disabilities, developmental delay, attention-deficit disorder, infantile hypotonia and cardiovascular abnormalities. Previous studies using microarray identified variations in the size and extent of the duplicated region of chromosome 17p11.2. However, there are a few genes which are considered as candidates for PTLS which include RAI1, SREBF1, DRG2, LLGL1, SHMT1 and ZFP179. In this report, we investigated a case of a 3-year-old girl who has developmental delay. Her chromosome analysis showed a normal karyotype (46,XX). Analysis using array CGH (4X44 K, Agilent USA) identified an ~4.2 Mb de novo duplication in chromosome 17p11.2. The result was confirmed by fluorescence in situ hybridization (FISH) using probes in the critical PTLS region. This report demonstrates the importance of microarray and FISH in the diagnosis of PTLS. © 2017, Malaysian Society of Pathologists. All rights reserved.}, note = {cited By 0}, keywords = {Abnormalities, Agarose, Article, Autism, Autism Spectrum Disorders, Blood Culture, Case Report, Children, Chromosome 17, Chromosome Analysis, Chromosome Disorder, Chromosome Duplication, Chromosomes, Clinical Article, Comparative Genomic Hybridization, Developmental Delay, Electrophoresis, Female, Fluorescence, Fluorescence in Situ Hybridization, Gene, Gene Identification, Genetics, Genomic DNA, Human, In Situ Hybridization, Lymphocyte Culture, Microarray Analysis, Multiple, Multiple Malformation Syndrome, Pair 17, Phenotype, Potocki Lupski Syndrome, Preschool, Preschool Child, Procedures, RAI1 Gene, Ultraviolet Spectrophotometry}, pubstate = {published}, tppubtype = {article} } Potocki-Lupski syndrome (PTLS), also known as duplication 17p11.2 syndrome, trisomy 17p11.2 or dup(17)(p11.2p11.2) syndrome, is a developmental disorder and a rare contiguous gene syndrome affecting 1 in 20,000 live births. Among the key features of such patients are autism spectrum disorder, learning disabilities, developmental delay, attention-deficit disorder, infantile hypotonia and cardiovascular abnormalities. Previous studies using microarray identified variations in the size and extent of the duplicated region of chromosome 17p11.2. However, there are a few genes which are considered as candidates for PTLS which include RAI1, SREBF1, DRG2, LLGL1, SHMT1 and ZFP179. In this report, we investigated a case of a 3-year-old girl who has developmental delay. Her chromosome analysis showed a normal karyotype (46,XX). Analysis using array CGH (4X44 K, Agilent USA) identified an ~4.2 Mb de novo duplication in chromosome 17p11.2. The result was confirmed by fluorescence in situ hybridization (FISH) using probes in the critical PTLS region. This report demonstrates the importance of microarray and FISH in the diagnosis of PTLS. © 2017, Malaysian Society of Pathologists. All rights reserved. |
Hameed, S S; Hassan, R; Muhammad, F F Selection and classification of gene expression in autism disorder: Use of a combination of statistical filters and a GBPSO-SVM algorithm Journal Article PLoS ONE, 12 (11), 2017, ISSN: 19326203, (cited By 11). Abstract | Links | BibTeX | Tags: Accuracy, Algorithms, Article, Autism, Autism Spectrum Disorders, CAPS2 Gene, Classification (of information), Classifier, Experimental Study, Gene, Gene Expression, Gene Identification, Genetic Association, Genetic Procedures, Genetic Risk, Genetics, Geometric Binary Particle Swarm Optimization Support Vector Machine Algorithm, Human, RIsk Assessment, Standardization, Statistical Filter, Statistical Parameters, Statistics, Support Vector Machines @article{Hameed2017, title = {Selection and classification of gene expression in autism disorder: Use of a combination of statistical filters and a GBPSO-SVM algorithm}, author = {S S Hameed and R Hassan and F F Muhammad}, url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85033361187&doi=10.1371%2fjournal.pone.0187371&partnerID=40&md5=f9260d41165145f229a3cf157699635e}, doi = {10.1371/journal.pone.0187371}, issn = {19326203}, year = {2017}, date = {2017-01-01}, journal = {PLoS ONE}, volume = {12}, number = {11}, publisher = {Public Library of Science}, abstract = {In this work, gene expression in autism spectrum disorder (ASD) is analyzed with the goal of selecting the most attributed genes and performing classification. The objective was achieved by utilizing a combination of various statistical filters and a wrapper-based geometric binary particle swarm optimization-support vector machine (GBPSO-SVM) algorithm. The utilization of different filters was accentuated by incorporating a mean and median ratio criterion to remove very similar genes. The results showed that the most discriminative genes that were identified in the first and last selection steps included the presence of a repetitive gene (CAPS2), which was assigned as the gene most highly related to ASD risk. The merged gene subset that was selected by the GBPSO-SVM algorithm was able to enhance the classification accuracy. © 2017 Hameed et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.}, note = {cited By 11}, keywords = {Accuracy, Algorithms, Article, Autism, Autism Spectrum Disorders, CAPS2 Gene, Classification (of information), Classifier, Experimental Study, Gene, Gene Expression, Gene Identification, Genetic Association, Genetic Procedures, Genetic Risk, Genetics, Geometric Binary Particle Swarm Optimization Support Vector Machine Algorithm, Human, RIsk Assessment, Standardization, Statistical Filter, Statistical Parameters, Statistics, Support Vector Machines}, pubstate = {published}, tppubtype = {article} } In this work, gene expression in autism spectrum disorder (ASD) is analyzed with the goal of selecting the most attributed genes and performing classification. The objective was achieved by utilizing a combination of various statistical filters and a wrapper-based geometric binary particle swarm optimization-support vector machine (GBPSO-SVM) algorithm. The utilization of different filters was accentuated by incorporating a mean and median ratio criterion to remove very similar genes. The results showed that the most discriminative genes that were identified in the first and last selection steps included the presence of a repetitive gene (CAPS2), which was assigned as the gene most highly related to ASD risk. The merged gene subset that was selected by the GBPSO-SVM algorithm was able to enhance the classification accuracy. © 2017 Hameed et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
2015 |
Gallagher, D; Voronova, A; Zander, M A; Cancino, G I; Bramall, A; Krause, M P; Abad, C; Tekin, M; Neilsen, P M; Callen, D F; Scherer, S W; Keller, G M; Kaplan, D R; Walz, K; Miller, F D Ankrd11 is a chromatin regulator involved in autism that is essential for neural development Journal Article Developmental Cell, 32 (1), pp. 31-42, 2015, ISSN: 15345807, (cited By 52). Abstract | Links | BibTeX | Tags: Acetylation, Animal Behavior, Animal Cell, Animals, Ankrd11 Protein, Ankyrin, Ankyrin Repeat Domain Containing Protein 11, Article, Autism, Autism Spectrum Disorders, Behaviour, Biological Marker, Blotting, Brain Cell Culture, Cell Culture, Cell Differentiation, Cell Proliferation, Cells, Chemistry, Chromatin, Chromatin Immunoprecipitation, Cultured, DNA Binding Protein, DNA Microarray, DNA-Binding Proteins, Enzyme Activity, Female, Gene, Gene Expression Profiling, Gene Targeting, Genetics, Histone, Histone Acetylation, Histone Acetyltransferase, Histone Deacetylase, Histone Deacetylase 3, Histone Deacetylases, Histones, Human, Human Cell, Immunoprecipitation, Messenger, Messenger RNA, Metabolism, Mice, Mouse, Murinae, Mus, Nerve Cell Differentiation, Nervous System Development, Neurogenesis, Nonhuman, Oligonucleotide Array Sequence Analysis, Pathology, Phenotype, Physiology, Point Mutation, Post-Translational, Priority Journal, Protein Expression, Protein Processing, Real-Time Polymerase Chain Reaction, Reverse Transcriptase Polymerase Chain Reaction, Reverse Transcription Polymerase Chain Reaction, RNA, Small Interfering, Small Interfering RNA, Unclassified Drug, Western, Western Blotting @article{Gallagher201531, title = {Ankrd11 is a chromatin regulator involved in autism that is essential for neural development}, author = {D Gallagher and A Voronova and M A Zander and G I Cancino and A Bramall and M P Krause and C Abad and M Tekin and P M Neilsen and D F Callen and S W Scherer and G M Keller and D R Kaplan and K Walz and F D Miller}, url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84922343890&doi=10.1016%2fj.devcel.2014.11.031&partnerID=40&md5=ad7b8bd3ead790f092e1d8a276d4f25c}, doi = {10.1016/j.devcel.2014.11.031}, issn = {15345807}, year = {2015}, date = {2015-01-01}, journal = {Developmental Cell}, volume = {32}, number = {1}, pages = {31-42}, publisher = {Cell Press}, abstract = {Ankrd11 is a potential chromatin regulator implicated in neural development and autism spectrum disorder (ASD) with no known function in the brain. Here, we show that knockdown of Ankrd11 in developing murine or human cortical neural precursors caused decreased proliferation, reduced neurogenesis, andaberrant neuronal positioning. Similar cellular phenotypes and aberrant ASD-like behaviors were observed in Yoda mice carrying a point mutation inthe Ankrd11 HDAC-binding domain. Consistent with a role for Ankrd11 in histone acetylation, Ankrd11 was associated with chromatin and colocalized with HDAC3, and expression and histone acetylation of Ankrd11 target genes were altered in Yoda neural precursors. Moreover, the Ankrd11 knockdown-mediated decrease in precursor proliferation was rescued by inhibiting histone acetyltransferase activity or expressing HDAC3. Thus, Ankrd11 is a crucial chromatin regulator that controls histone acetylation and gene expression during neural development, thereby providing a likely explanation for its association with cognitive dysfunction and ASD. © 2015 Elsevier Inc.}, note = {cited By 52}, keywords = {Acetylation, Animal Behavior, Animal Cell, Animals, Ankrd11 Protein, Ankyrin, Ankyrin Repeat Domain Containing Protein 11, Article, Autism, Autism Spectrum Disorders, Behaviour, Biological Marker, Blotting, Brain Cell Culture, Cell Culture, Cell Differentiation, Cell Proliferation, Cells, Chemistry, Chromatin, Chromatin Immunoprecipitation, Cultured, DNA Binding Protein, DNA Microarray, DNA-Binding Proteins, Enzyme Activity, Female, Gene, Gene Expression Profiling, Gene Targeting, Genetics, Histone, Histone Acetylation, Histone Acetyltransferase, Histone Deacetylase, Histone Deacetylase 3, Histone Deacetylases, Histones, Human, Human Cell, Immunoprecipitation, Messenger, Messenger RNA, Metabolism, Mice, Mouse, Murinae, Mus, Nerve Cell Differentiation, Nervous System Development, Neurogenesis, Nonhuman, Oligonucleotide Array Sequence Analysis, Pathology, Phenotype, Physiology, Point Mutation, Post-Translational, Priority Journal, Protein Expression, Protein Processing, Real-Time Polymerase Chain Reaction, Reverse Transcriptase Polymerase Chain Reaction, Reverse Transcription Polymerase Chain Reaction, RNA, Small Interfering, Small Interfering RNA, Unclassified Drug, Western, Western Blotting}, pubstate = {published}, tppubtype = {article} } Ankrd11 is a potential chromatin regulator implicated in neural development and autism spectrum disorder (ASD) with no known function in the brain. Here, we show that knockdown of Ankrd11 in developing murine or human cortical neural precursors caused decreased proliferation, reduced neurogenesis, andaberrant neuronal positioning. Similar cellular phenotypes and aberrant ASD-like behaviors were observed in Yoda mice carrying a point mutation inthe Ankrd11 HDAC-binding domain. Consistent with a role for Ankrd11 in histone acetylation, Ankrd11 was associated with chromatin and colocalized with HDAC3, and expression and histone acetylation of Ankrd11 target genes were altered in Yoda neural precursors. Moreover, the Ankrd11 knockdown-mediated decrease in precursor proliferation was rescued by inhibiting histone acetyltransferase activity or expressing HDAC3. Thus, Ankrd11 is a crucial chromatin regulator that controls histone acetylation and gene expression during neural development, thereby providing a likely explanation for its association with cognitive dysfunction and ASD. © 2015 Elsevier Inc. |
Haerian, B S; Shaári, H M; Tan, H J; Fong, C Y; Wong, S W; Ong, L C; Raymond, A A; Tan, C T; Mohamed, Z Genomics, 105 (4), pp. 229-236, 2015, ISSN: 08887543, (cited By 5). Abstract | Links | BibTeX | Tags: Adolescent, Adult, Article, Case-Control Studies, Controlled Study, DNA, Epilepsy, Epistasis, Female, Gene, Gene Interaction, Genetic Polymorphism, Genetic Predisposition, Genetic Predisposition to Disease, Genetic Risk, Genetic Variability, Genetics, Genotype, Group F, Human, Major Clinical Study, Malaysia, Male, Member 1, Member 2, Middle Aged, Nav1.1 Voltage-Gated Sodium Channel, Nuclear Receptor Subfamily 1, Polymorphism, Priority Journal, Retinoid Related Orphan Receptor Alpha, Retinoid Related Orphan Receptor Beta, Risk, RORA Gene, RORA Protein, RORB Protein, SCN1A Gene, SCN1A Protein, Single Nucleotide, Single Nucleotide Polymorphism, Sodium Channel Nav1.1, Young Adult @article{Haerian2015229, title = {RORA gene rs12912233 and rs880626 polymorphisms and their interaction with SCN1A rs3812718 in the risk of epilepsy: A case-control study in Malaysia}, author = {B S Haerian and H M Shaári and H J Tan and C Y Fong and S W Wong and L C Ong and A A Raymond and C T Tan and Z Mohamed}, url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84924135981&doi=10.1016%2fj.ygeno.2015.02.001&partnerID=40&md5=209a1720cddfd76bfa515ee8940749d5}, doi = {10.1016/j.ygeno.2015.02.001}, issn = {08887543}, year = {2015}, date = {2015-01-01}, journal = {Genomics}, volume = {105}, number = {4}, pages = {229-236}, publisher = {Academic Press Inc.}, abstract = {RAR-related orphan receptors A (RORA) and B (RORB) and voltage-gated sodium channel type 1 (SCN1A) genes play critical roles in the regulation of the circadian clock. Evidence has shown an association of RORA and RORB polymorphisms with susceptibility to autism and depression. Hence, we tested the association of RORA rs12912233, rs16943429, rs880626, rs2290430, and rs12900948; RORB rs1157358, rs7022435, rs3750420, and rs3903529; and SCN1A rs3812718 with epilepsy risk in the Malaysians. DNA was genotyped in 1789 subjects (39% epilepsy patients) by using MassARRAY (Sequenom). Significant association was obtained for rs12912233 in Malaysian Chinese (p= 0.003). Interaction between rs12912233-rs880626 and rs3812718 was associated with the epilepsy risk in the subjects overall (p= 0.001). Results show that RORA rs12912233 alone might be a possible risk variant for epilepsy in Malaysian Chinese, but that, together with RORA rs880626 and SCN1A rs3812718, this polymorphism may have a synergistic effect in the epilepsy risk in Malaysians. © 2015 Elsevier Inc.}, note = {cited By 5}, keywords = {Adolescent, Adult, Article, Case-Control Studies, Controlled Study, DNA, Epilepsy, Epistasis, Female, Gene, Gene Interaction, Genetic Polymorphism, Genetic Predisposition, Genetic Predisposition to Disease, Genetic Risk, Genetic Variability, Genetics, Genotype, Group F, Human, Major Clinical Study, Malaysia, Male, Member 1, Member 2, Middle Aged, Nav1.1 Voltage-Gated Sodium Channel, Nuclear Receptor Subfamily 1, Polymorphism, Priority Journal, Retinoid Related Orphan Receptor Alpha, Retinoid Related Orphan Receptor Beta, Risk, RORA Gene, RORA Protein, RORB Protein, SCN1A Gene, SCN1A Protein, Single Nucleotide, Single Nucleotide Polymorphism, Sodium Channel Nav1.1, Young Adult}, pubstate = {published}, tppubtype = {article} } RAR-related orphan receptors A (RORA) and B (RORB) and voltage-gated sodium channel type 1 (SCN1A) genes play critical roles in the regulation of the circadian clock. Evidence has shown an association of RORA and RORB polymorphisms with susceptibility to autism and depression. Hence, we tested the association of RORA rs12912233, rs16943429, rs880626, rs2290430, and rs12900948; RORB rs1157358, rs7022435, rs3750420, and rs3903529; and SCN1A rs3812718 with epilepsy risk in the Malaysians. DNA was genotyped in 1789 subjects (39% epilepsy patients) by using MassARRAY (Sequenom). Significant association was obtained for rs12912233 in Malaysian Chinese (p= 0.003). Interaction between rs12912233-rs880626 and rs3812718 was associated with the epilepsy risk in the subjects overall (p= 0.001). Results show that RORA rs12912233 alone might be a possible risk variant for epilepsy in Malaysian Chinese, but that, together with RORA rs880626 and SCN1A rs3812718, this polymorphism may have a synergistic effect in the epilepsy risk in Malaysians. © 2015 Elsevier Inc. |
2014 |
Chen, B C; Rawi, Mohd R; Meinsma, R; Meijer, J; Hennekam, R C M; Kuilenburg, Van A B P Dihydropyrimidine dehydrogenase deficiency in two Malaysian siblings with abnormal MRI findings Journal Article Molecular Syndromology, 5 (6), pp. 299-303, 2014, ISSN: 16618769, (cited By 4). Abstract | Links | BibTeX | Tags: Alanine, Article, Asymptomatic Disease, Autism, Autosomal Recessive Disorder, Case Report, Cerebellum Atrophy, Children, Creatinine, Dihydropyrimidine Dehydrogenase, Dihydropyrimidine Dehydrogenase Deficiency, Disease Severity, DPYD Gene, Eye Malformation, Female, Gene, Gene Mutation, Homozygosity, Human, Intellectual Impairment, Malaysian, Male, Microcephaly, Muscle Hypotonia, Nuclear Magnetic Resonance Imaging, Preschool Child, Pyrimidine, Pyrimidine Metabolism, School Child, Seizure, Sequence Analysis, Sibling, Threonine, Thymine, Uracil @article{Chen2014299, title = {Dihydropyrimidine dehydrogenase deficiency in two Malaysian siblings with abnormal MRI findings}, author = {B C Chen and R Mohd Rawi and R Meinsma and J Meijer and R C M Hennekam and A B P Van Kuilenburg}, url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84919783242&doi=10.1159%2f000366074&partnerID=40&md5=1ebfb9aedb7cb64e3423811b41b6aa7c}, doi = {10.1159/000366074}, issn = {16618769}, year = {2014}, date = {2014-01-01}, journal = {Molecular Syndromology}, volume = {5}, number = {6}, pages = {299-303}, publisher = {S. Karger AG}, abstract = {Dihydropyrimidine dehydrogenase (DPD) deficiency is an autosomal recessive disorder of the pyrimidine metabolism. Deficiency of this enzyme leads to an accumulation of thymine and uracil and a deficiency of metabolites distal to the catabolic enzyme. The disorder presents with a wide clinical spectrum, ranging from asymptomatic to severe neurological manifestations, including intellectual disability, seizures, microcephaly, autistic behavior, and eye abnormalities. Here, we report on an 11-year-old Malaysian girl and her 6-year-old brother with DPD deficiency who presented with intellectual disability, microcephaly, and hypotonia. Brain MRI scans showed generalized cerebral and cerebellar atrophy and callosal body dysgenesis in the boy. Urine analysis showed strongly elevated levels of uracil in the girl and boy (571 and 578 mmol/mol creatinine, respectively) and thymine (425 and 427 mmol/mol creatinine, respectively). Sequence analysis of the DPYD gene showed that both siblings were homozygous for the mutation c.1651G>A (pAla551Thr). © 2014 S. Karger AG, Basel.}, note = {cited By 4}, keywords = {Alanine, Article, Asymptomatic Disease, Autism, Autosomal Recessive Disorder, Case Report, Cerebellum Atrophy, Children, Creatinine, Dihydropyrimidine Dehydrogenase, Dihydropyrimidine Dehydrogenase Deficiency, Disease Severity, DPYD Gene, Eye Malformation, Female, Gene, Gene Mutation, Homozygosity, Human, Intellectual Impairment, Malaysian, Male, Microcephaly, Muscle Hypotonia, Nuclear Magnetic Resonance Imaging, Preschool Child, Pyrimidine, Pyrimidine Metabolism, School Child, Seizure, Sequence Analysis, Sibling, Threonine, Thymine, Uracil}, pubstate = {published}, tppubtype = {article} } Dihydropyrimidine dehydrogenase (DPD) deficiency is an autosomal recessive disorder of the pyrimidine metabolism. Deficiency of this enzyme leads to an accumulation of thymine and uracil and a deficiency of metabolites distal to the catabolic enzyme. The disorder presents with a wide clinical spectrum, ranging from asymptomatic to severe neurological manifestations, including intellectual disability, seizures, microcephaly, autistic behavior, and eye abnormalities. Here, we report on an 11-year-old Malaysian girl and her 6-year-old brother with DPD deficiency who presented with intellectual disability, microcephaly, and hypotonia. Brain MRI scans showed generalized cerebral and cerebellar atrophy and callosal body dysgenesis in the boy. Urine analysis showed strongly elevated levels of uracil in the girl and boy (571 and 578 mmol/mol creatinine, respectively) and thymine (425 and 427 mmol/mol creatinine, respectively). Sequence analysis of the DPYD gene showed that both siblings were homozygous for the mutation c.1651G>A (pAla551Thr). © 2014 S. Karger AG, Basel. |
Brett, M; McPherson, J; Zang, Z J; Lai, A; Tan, E -S; Ng, I; Ong, L -C; Cham, B; Tan, P; Rozen, S; Tan, E -C PLoS ONE, 9 (4), 2014, ISSN: 19326203, (cited By 20). Abstract | Links | BibTeX | Tags: Article, ATRX Gene, Autism, Autism Spectrum Disorders, Children, Clinical Article, Congenital Abnormalities, Congenital Malformation, Controlled Study, Diagnostic Test, DNA Mutational Analysis, Female, Gene, Gene Expression Profiling, Gene Mutation, Gene Targeting, Genetic Association, Genetic Association Studies, Genetic Disorder, Genetic Variability, Genetic Variation, Genetics, Genome-Wide Association Study, High Throughput Sequencing, High-Throughput Nucleotide Sequencing, Human, Intellectual Disability, Intellectual Impairment, Karyotype, L1CAM Gene, Male, Mutation, Nonsense Mutation, Nucleotide Sequence, Phenotype, Polymorphism, RNA Splice Sites, RNA Splicing, Single Nucleotide, Single Nucleotide Polymorphism @article{Brett2014, title = {Massively parallel sequencing of patients with intellectual disability, congenital anomalies and/or autism spectrum disorders with a targeted gene panel}, author = {M Brett and J McPherson and Z J Zang and A Lai and E -S Tan and I Ng and L -C Ong and B Cham and P Tan and S Rozen and E -C Tan}, url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84898625023&doi=10.1371%2fjournal.pone.0093409&partnerID=40&md5=f673e204a009bf84de81ea69dcd026db}, doi = {10.1371/journal.pone.0093409}, issn = {19326203}, year = {2014}, date = {2014-01-01}, journal = {PLoS ONE}, volume = {9}, number = {4}, publisher = {Public Library of Science}, abstract = {Developmental delay and/or intellectual disability (DD/ID) affects 1-3% of all children. At least half of these are thought to have a genetic etiology. Recent studies have shown that massively parallel sequencing (MPS) using a targeted gene panel is particularly suited for diagnostic testing for genetically heterogeneous conditions. We report on our experiences with using massively parallel sequencing of a targeted gene panel of 355 genes for investigating the genetic etiology of eight patients with a wide range of phenotypes including DD/ID, congenital anomalies and/or autism spectrum disorder. Targeted sequence enrichment was performed using the Agilent SureSelect Target Enrichment Kit and sequenced on the Illumina HiSeq2000 using paired-end reads. For all eight patients, 81-84% of the targeted regions achieved read depths of at least 20×, with average read depths overlapping targets ranging from 322 × to 798 ×. Causative variants were successfully identified in two of the eight patients: a nonsense mutation in the ATRX gene and a canonical splice site mutation in the L1CAM gene. In a third patient, a canonical splice site variant in the USP9X gene could likely explain all or some of her clinical phenotypes. These results confirm the value of targeted MPS for investigating DD/ID in children for diagnostic purposes. However, targeted gene MPS was less likely to provide a genetic diagnosis for children whose phenotype includes autism. © 2014 Brett et al.}, note = {cited By 20}, keywords = {Article, ATRX Gene, Autism, Autism Spectrum Disorders, Children, Clinical Article, Congenital Abnormalities, Congenital Malformation, Controlled Study, Diagnostic Test, DNA Mutational Analysis, Female, Gene, Gene Expression Profiling, Gene Mutation, Gene Targeting, Genetic Association, Genetic Association Studies, Genetic Disorder, Genetic Variability, Genetic Variation, Genetics, Genome-Wide Association Study, High Throughput Sequencing, High-Throughput Nucleotide Sequencing, Human, Intellectual Disability, Intellectual Impairment, Karyotype, L1CAM Gene, Male, Mutation, Nonsense Mutation, Nucleotide Sequence, Phenotype, Polymorphism, RNA Splice Sites, RNA Splicing, Single Nucleotide, Single Nucleotide Polymorphism}, pubstate = {published}, tppubtype = {article} } Developmental delay and/or intellectual disability (DD/ID) affects 1-3% of all children. At least half of these are thought to have a genetic etiology. Recent studies have shown that massively parallel sequencing (MPS) using a targeted gene panel is particularly suited for diagnostic testing for genetically heterogeneous conditions. We report on our experiences with using massively parallel sequencing of a targeted gene panel of 355 genes for investigating the genetic etiology of eight patients with a wide range of phenotypes including DD/ID, congenital anomalies and/or autism spectrum disorder. Targeted sequence enrichment was performed using the Agilent SureSelect Target Enrichment Kit and sequenced on the Illumina HiSeq2000 using paired-end reads. For all eight patients, 81-84% of the targeted regions achieved read depths of at least 20×, with average read depths overlapping targets ranging from 322 × to 798 ×. Causative variants were successfully identified in two of the eight patients: a nonsense mutation in the ATRX gene and a canonical splice site mutation in the L1CAM gene. In a third patient, a canonical splice site variant in the USP9X gene could likely explain all or some of her clinical phenotypes. These results confirm the value of targeted MPS for investigating DD/ID in children for diagnostic purposes. However, targeted gene MPS was less likely to provide a genetic diagnosis for children whose phenotype includes autism. © 2014 Brett et al. |
2013 |
Mousavizadeh, K; Askari, M; Arian, H; Gorjipour, F; Nikpour, A R; Tavafjadid, M; Aryani, O; Kamalidehghan, B; Maroof, H R; Houshmand, M Association of human mtDNA mutations with autism in Iranian patients Journal Article Journal of Research in Medical Sciences, 18 (10), pp. 926, 2013, ISSN: 17351995, (cited By 2). Links | BibTeX | Tags: Autism, Clinical Article, Controlled Study, Gene, Gene Frequency, Gene Mutation, Gene Sequence, Genetic Association, Genetic Risk, Human, Letter, Mitochondrial DNA, Molecular Phylogeny, Pathophysiology, Point Mutation, Polymerase Chain Reaction @article{Mousavizadeh2013926, title = {Association of human mtDNA mutations with autism in Iranian patients}, author = {K Mousavizadeh and M Askari and H Arian and F Gorjipour and A R Nikpour and M Tavafjadid and O Aryani and B Kamalidehghan and H R Maroof and M Houshmand}, url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84887270916&partnerID=40&md5=3922601b0364489a2b76d620316cc150}, issn = {17351995}, year = {2013}, date = {2013-01-01}, journal = {Journal of Research in Medical Sciences}, volume = {18}, number = {10}, pages = {926}, publisher = {Isfahan University of Medical Sciences(IUMS)}, note = {cited By 2}, keywords = {Autism, Clinical Article, Controlled Study, Gene, Gene Frequency, Gene Mutation, Gene Sequence, Genetic Association, Genetic Risk, Human, Letter, Mitochondrial DNA, Molecular Phylogeny, Pathophysiology, Point Mutation, Polymerase Chain Reaction}, pubstate = {published}, tppubtype = {article} } |
2012 |
Tan, E H; Razak, S A; Abdullah, J M; Yusoff, Mohamed A A De-novo mutations and genetic variation in the SCN1A gene in Malaysian patients with generalized epilepsy with febrile seizures plus (GEFS+) Journal Article Epilepsy Research, 102 (3), pp. 210-215, 2012, ISSN: 09201211, (cited By 2). Abstract | Links | BibTeX | Tags: Alanine, Amino Acid Substitution, Arginine, Article, Asparagine, Aspartic Acid, Children, Clinical Article, Clinical Feature, Controlled Study, Disease Association, DNA Mutational Analysis, DNA Sequence, Electroencephalography, Epilepsy, Febrile, Febrile Convulsion, Female, Gene, Gene Frequency, Gene Identification, Generalized, Generalized Epilepsy, Genetic Association, Genetic Predisposition, Genetic Screening, Genetic Variability, Glycine, Histidine, Human, Infant, Malaysia, Male, Missense Mutation, Molecular Pathology, Mutation, Mutational Analysis, Mutator Gene, Nav1.1 Voltage-Gated Sodium Channel, Onset Age, Patient Assessment, Polymorphism, Preschool Child, Priority Journal, Promoter Region, School Child, Seizure, Sequence Analysis, Single Nucleotide, Single Nucleotide Polymorphism, Sodium Channel Nav1.1, Voltage Gated Sodium Channel Alpha1 Subunit Gene @article{Tan2012210, title = {De-novo mutations and genetic variation in the SCN1A gene in Malaysian patients with generalized epilepsy with febrile seizures plus (GEFS+)}, author = {E H Tan and S A Razak and J M Abdullah and A A Mohamed Yusoff}, url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84870296042&doi=10.1016%2fj.eplepsyres.2012.08.004&partnerID=40&md5=25cc4eeb07db2492a7c04c6b3b3b2167}, doi = {10.1016/j.eplepsyres.2012.08.004}, issn = {09201211}, year = {2012}, date = {2012-01-01}, journal = {Epilepsy Research}, volume = {102}, number = {3}, pages = {210-215}, abstract = {Generalized epilepsy with febrile seizures plus (GEFS+) comprises a group of clinically and genetically heterogeneous epilepsy syndrome. Here, we provide the first report of clinical presentation and mutational analysis of SCN1A gene in 36 Malaysian GEFS+ patients. Mutational analysis of SCN1A gene revealed twenty seven sequence variants (missense mutation and silent polymorphism also intronic polymorphism), as well as 2 novel de-novo mutations were found in our patients at coding regions, c.5197A>G (N1733D) and c.4748A>G (H1583R). Our findings provide potential genetic insights into the pathogenesis of GEFS+ in Malaysian populations concerning the SCN1A gene mutations. © 2012 Elsevier B.V.}, note = {cited By 2}, keywords = {Alanine, Amino Acid Substitution, Arginine, Article, Asparagine, Aspartic Acid, Children, Clinical Article, Clinical Feature, Controlled Study, Disease Association, DNA Mutational Analysis, DNA Sequence, Electroencephalography, Epilepsy, Febrile, Febrile Convulsion, Female, Gene, Gene Frequency, Gene Identification, Generalized, Generalized Epilepsy, Genetic Association, Genetic Predisposition, Genetic Screening, Genetic Variability, Glycine, Histidine, Human, Infant, Malaysia, Male, Missense Mutation, Molecular Pathology, Mutation, Mutational Analysis, Mutator Gene, Nav1.1 Voltage-Gated Sodium Channel, Onset Age, Patient Assessment, Polymorphism, Preschool Child, Priority Journal, Promoter Region, School Child, Seizure, Sequence Analysis, Single Nucleotide, Single Nucleotide Polymorphism, Sodium Channel Nav1.1, Voltage Gated Sodium Channel Alpha1 Subunit Gene}, pubstate = {published}, tppubtype = {article} } Generalized epilepsy with febrile seizures plus (GEFS+) comprises a group of clinically and genetically heterogeneous epilepsy syndrome. Here, we provide the first report of clinical presentation and mutational analysis of SCN1A gene in 36 Malaysian GEFS+ patients. Mutational analysis of SCN1A gene revealed twenty seven sequence variants (missense mutation and silent polymorphism also intronic polymorphism), as well as 2 novel de-novo mutations were found in our patients at coding regions, c.5197A>G (N1733D) and c.4748A>G (H1583R). Our findings provide potential genetic insights into the pathogenesis of GEFS+ in Malaysian populations concerning the SCN1A gene mutations. © 2012 Elsevier B.V. |
Tan, E H; Yusoff, A A M; Abdullah, J M; Razak, S A Generalized epilepsy with febrile seizure plus (GEFS+) spectrum: Novel de novo mutation of SCN1A detected in a Malaysian patient Journal Article Journal of Pediatric Neurosciences, 7 (2), pp. 123-125, 2012, ISSN: 18171745, (cited By 3). Abstract | Links | BibTeX | Tags: Adolescent, Anxiety Disorder, Article, Autism, Carbamazepine, Case Report, Computer Assisted Tomography, Electroencephalogram, Electroencephalography, Febrile Convulsion, Gene, Generalized Epilepsy, Generalized Epilepsy with Febrile Seizure Plus, Human, Karyotype, Malaysia, Male, Medical History, Mental Deficiency, Missense Mutation, Nuclear Magnetic Resonance Imaging, Phenotype, SCN1A Gene, Tonic Clonic Seizure, Topiramate, Valproic Acid @article{Tan2012123, title = {Generalized epilepsy with febrile seizure plus (GEFS+) spectrum: Novel de novo mutation of SCN1A detected in a Malaysian patient}, author = {E H Tan and A A M Yusoff and J M Abdullah and S A Razak}, url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84870194979&doi=10.4103%2f1817-1745.102575&partnerID=40&md5=b73f0bdb583e84404e0fff232faf30cb}, doi = {10.4103/1817-1745.102575}, issn = {18171745}, year = {2012}, date = {2012-01-01}, journal = {Journal of Pediatric Neurosciences}, volume = {7}, number = {2}, pages = {123-125}, abstract = {In this report, we describe a 15-year-old Malaysian male patient with a de novo SCN1A mutation who experienced prolonged febrile seizures after his first seizure at 6 months of age. This boy had generalized tonic clonic seizure (GTCS) which occurred with and without fever. Sequencing analysis of voltage-gated sodium channel a1-subunit gene, SCN1A, confirmed a homozygous A to G change at nucleotide 5197 (c.5197A > G) in exon 26 resulting in amino acid substitution of asparagines to aspartate at codon 1733 of sodium channel. The mutation identified in this patient is located in the pore-forming loop of SCN1A and this case report suggests missense mutation in pore-forming loop causes generalized epilepsy with febrile seizure plus (GEFS+) with clinically more severe neurologic phenotype including intellectual disabilities (mental retardation and autism features) and neuropsychiatric disease (anxiety disorder).}, note = {cited By 3}, keywords = {Adolescent, Anxiety Disorder, Article, Autism, Carbamazepine, Case Report, Computer Assisted Tomography, Electroencephalogram, Electroencephalography, Febrile Convulsion, Gene, Generalized Epilepsy, Generalized Epilepsy with Febrile Seizure Plus, Human, Karyotype, Malaysia, Male, Medical History, Mental Deficiency, Missense Mutation, Nuclear Magnetic Resonance Imaging, Phenotype, SCN1A Gene, Tonic Clonic Seizure, Topiramate, Valproic Acid}, pubstate = {published}, tppubtype = {article} } In this report, we describe a 15-year-old Malaysian male patient with a de novo SCN1A mutation who experienced prolonged febrile seizures after his first seizure at 6 months of age. This boy had generalized tonic clonic seizure (GTCS) which occurred with and without fever. Sequencing analysis of voltage-gated sodium channel a1-subunit gene, SCN1A, confirmed a homozygous A to G change at nucleotide 5197 (c.5197A > G) in exon 26 resulting in amino acid substitution of asparagines to aspartate at codon 1733 of sodium channel. The mutation identified in this patient is located in the pore-forming loop of SCN1A and this case report suggests missense mutation in pore-forming loop causes generalized epilepsy with febrile seizure plus (GEFS+) with clinically more severe neurologic phenotype including intellectual disabilities (mental retardation and autism features) and neuropsychiatric disease (anxiety disorder). |
Cheah, P -S; Ramshaw, H S; Thomas, P Q; Toyo-Oka, K; Xu, X; Martin, S; Coyle, P; Guthridge, M A; Stomski, F; Buuse, Van Den M; Wynshaw-Boris, A; Lopez, A F; Schwarz, Q P Neurodevelopmental and neuropsychiatric behaviour defects arise from 14-3-3ζ deficiency Journal Article Molecular Psychiatry, 17 (4), pp. 451-466, 2012, ISSN: 13594184, (cited By 58). Abstract | Links | BibTeX | Tags: 14-3-3 Proteins, Animal Experiment, Animal Model, Animal Tissue, Animals, Article, Autism, Behaviour Disorder, Bipolar Disorder, Brain, Cell Movement, Cells, Cognitive Defect, Controlled Study, Cultured, Disease Models, Disrupted in Schizophrenia 1 Protein, Embryo, Female, Gene, Gene Deletion, Genetic Predisposition to Disease, Glutamic Acid, Hippocampal Mossy Fiber, Hippocampus, Human, Hyperactivity, Inbred C57BL, Isoprotein, Knockout, Learning, Male, Maze Learning, Memory, Mice, Motor Activity, Mouse, Neurogenesis, Neuronal Migration Disorder, Neurons, Neuropsychiatry, Nonhuman, Priority Journal, Protein 14-3-3, Protein 14-3-3 Zeta, Protein Deficiency, Protein Interaction, Recognition, Risk Factor, Schizophrenia, Sensory Gating, Synapse, Unclassified Drug @article{Cheah2012451, title = {Neurodevelopmental and neuropsychiatric behaviour defects arise from 14-3-3ζ deficiency}, author = {P -S Cheah and H S Ramshaw and P Q Thomas and K Toyo-Oka and X Xu and S Martin and P Coyle and M A Guthridge and F Stomski and M Van Den Buuse and A Wynshaw-Boris and A F Lopez and Q P Schwarz}, url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84859007028&doi=10.1038%2fmp.2011.158&partnerID=40&md5=7f507fef31a192a10b3cde7bf69b5442}, doi = {10.1038/mp.2011.158}, issn = {13594184}, year = {2012}, date = {2012-01-01}, journal = {Molecular Psychiatry}, volume = {17}, number = {4}, pages = {451-466}, abstract = {Complex neuropsychiatric disorders are believed to arise from multiple synergistic deficiencies within connected biological networks controlling neuronal migration, axonal pathfinding and synapse formation. Here, we show that deletion of 14-3-3ζ causes neurodevelopmental anomalies similar to those seen in neuropsychiatric disorders such as schizophrenia, autism spectrum disorder and bipolar disorder. 14-3-3ζ-Deficient mice displayed striking behavioural and cognitive deficiencies including a reduced capacity to learn and remember, hyperactivity and disrupted sensorimotor gating. These deficits are accompanied by subtle developmental abnormalities of the hippocampus that are underpinned by aberrant neuronal migration. Significantly, 14-3-3ζ- deficient mice exhibited abnormal mossy fibre navigation and glutamatergic synapse formation. The molecular basis of these defects involves the schizophrenia risk factor, DISC1, which interacts isoform specifically with 14-3-3ζ. Our data provide the first evidence of a direct role for 14-3-3ζ deficiency in the aetiology of neurodevelopmental disorders and identifies 14-3-3ζ as a central risk factor in the schizophrenia protein interaction network. © 2012 Macmillan Publishers Limited All rights reserved.}, note = {cited By 58}, keywords = {14-3-3 Proteins, Animal Experiment, Animal Model, Animal Tissue, Animals, Article, Autism, Behaviour Disorder, Bipolar Disorder, Brain, Cell Movement, Cells, Cognitive Defect, Controlled Study, Cultured, Disease Models, Disrupted in Schizophrenia 1 Protein, Embryo, Female, Gene, Gene Deletion, Genetic Predisposition to Disease, Glutamic Acid, Hippocampal Mossy Fiber, Hippocampus, Human, Hyperactivity, Inbred C57BL, Isoprotein, Knockout, Learning, Male, Maze Learning, Memory, Mice, Motor Activity, Mouse, Neurogenesis, Neuronal Migration Disorder, Neurons, Neuropsychiatry, Nonhuman, Priority Journal, Protein 14-3-3, Protein 14-3-3 Zeta, Protein Deficiency, Protein Interaction, Recognition, Risk Factor, Schizophrenia, Sensory Gating, Synapse, Unclassified Drug}, pubstate = {published}, tppubtype = {article} } Complex neuropsychiatric disorders are believed to arise from multiple synergistic deficiencies within connected biological networks controlling neuronal migration, axonal pathfinding and synapse formation. Here, we show that deletion of 14-3-3ζ causes neurodevelopmental anomalies similar to those seen in neuropsychiatric disorders such as schizophrenia, autism spectrum disorder and bipolar disorder. 14-3-3ζ-Deficient mice displayed striking behavioural and cognitive deficiencies including a reduced capacity to learn and remember, hyperactivity and disrupted sensorimotor gating. These deficits are accompanied by subtle developmental abnormalities of the hippocampus that are underpinned by aberrant neuronal migration. Significantly, 14-3-3ζ- deficient mice exhibited abnormal mossy fibre navigation and glutamatergic synapse formation. The molecular basis of these defects involves the schizophrenia risk factor, DISC1, which interacts isoform specifically with 14-3-3ζ. Our data provide the first evidence of a direct role for 14-3-3ζ deficiency in the aetiology of neurodevelopmental disorders and identifies 14-3-3ζ as a central risk factor in the schizophrenia protein interaction network. © 2012 Macmillan Publishers Limited All rights reserved. |
2019 |
Long-Term Therapeutic Efficacy of Intravenous AAV-Mediated Hamartin Replacement in Mouse Model of Tuberous Sclerosis Type 1 Journal Article Molecular Therapy - Methods and Clinical Development, 15 , pp. 18-26, 2019, ISSN: 23290501, (cited By 2). |
2018 |
GRIN2D variants in three cases of developmental and epileptic encephalopathy Journal Article Clinical Genetics, 94 (6), pp. 538-547, 2018, ISSN: 00099163, (cited By 4). |
2017 |
Duplication 17p11.2 (Potocki-Lupski syndrome) in a child with developmental delay Journal Article Malaysian Journal of Pathology, 39 (1), pp. 77-81, 2017, ISSN: 01268635, (cited By 0). |
Selection and classification of gene expression in autism disorder: Use of a combination of statistical filters and a GBPSO-SVM algorithm Journal Article PLoS ONE, 12 (11), 2017, ISSN: 19326203, (cited By 11). |
2015 |
Ankrd11 is a chromatin regulator involved in autism that is essential for neural development Journal Article Developmental Cell, 32 (1), pp. 31-42, 2015, ISSN: 15345807, (cited By 52). |
Genomics, 105 (4), pp. 229-236, 2015, ISSN: 08887543, (cited By 5). |
2014 |
Dihydropyrimidine dehydrogenase deficiency in two Malaysian siblings with abnormal MRI findings Journal Article Molecular Syndromology, 5 (6), pp. 299-303, 2014, ISSN: 16618769, (cited By 4). |
PLoS ONE, 9 (4), 2014, ISSN: 19326203, (cited By 20). |
2013 |
Association of human mtDNA mutations with autism in Iranian patients Journal Article Journal of Research in Medical Sciences, 18 (10), pp. 926, 2013, ISSN: 17351995, (cited By 2). |
2012 |
De-novo mutations and genetic variation in the SCN1A gene in Malaysian patients with generalized epilepsy with febrile seizures plus (GEFS+) Journal Article Epilepsy Research, 102 (3), pp. 210-215, 2012, ISSN: 09201211, (cited By 2). |
Generalized epilepsy with febrile seizure plus (GEFS+) spectrum: Novel de novo mutation of SCN1A detected in a Malaysian patient Journal Article Journal of Pediatric Neurosciences, 7 (2), pp. 123-125, 2012, ISSN: 18171745, (cited By 3). |
Neurodevelopmental and neuropsychiatric behaviour defects arise from 14-3-3ζ deficiency Journal Article Molecular Psychiatry, 17 (4), pp. 451-466, 2012, ISSN: 13594184, (cited By 58). |