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https://www.readbyqxmd.com/read/27916453/shank3-deficiency-impairs-heat-hyperalgesia-and-trpv1-signaling-in-primary-sensory-neurons
#1
Qingjian Han, Yong Ho Kim, Xiaoming Wang, Di Liu, Zhi-Jun Zhang, Alexandra L Bey, Mark Lay, Wonseok Chang, Temugin Berta, Yan Zhang, Yong-Hui Jiang, Ru-Rong Ji
Abnormal pain sensitivity is commonly associated with autism spectrum disorders (ASDs) and affects the life quality of ASD individuals. SHANK3 deficiency was implicated in ASD and pain dysregulation. Here, we report functional expression of SHANK3 in mouse dorsal root ganglion (DRG) sensory neurons and spinal cord presynaptic terminals. Homozygous and heterozygous Shank3 complete knockout (Δe4-22) results in impaired heat hyperalgesia in inflammatory and neuropathic pain. Specific deletion of Shank3 in Nav1...
November 24, 2016: Neuron
https://www.readbyqxmd.com/read/27891178/enrichment-of-small-pathogenic-deletions-at-chromosome-9p24-3-and-9q34-3-involving-dock8-kank1-ehmt1-genes-identified-by-using-high-resolution-oligonucleotide-single-nucleotide-polymorphism-array-analysis
#2
Jia-Chi Wang, Loretta W Mahon, Leslie P Ross, Arturo Anguiano, Renius Owen, Fatih Z Boyar
BACKGROUND: High-resolution oligo-SNP array allowed the identification of extremely small pathogenic deletions at numerous clinically relevant regions. In our clinical practice, we found that small pathogenic deletions were frequently encountered at chromosome 9p and 9q terminal regions. RESULTS: A review of 531 cases with reportable copy number changes on chromosome 9 revealed142 pathogenic copy number variants (CNVs): 104 losses, 31 gains, 7 complex chromosomal rearrangements...
2016: Molecular Cytogenetics
https://www.readbyqxmd.com/read/27876814/a-genome-wide-investigation-into-parent-of-origin-effects-in-autism-spectrum-disorder-identifies-previously-associated-genes-including-shank3
#3
Siobhan Connolly, Richard Anney, Louise Gallagher, Elizabeth A Heron
Autism spectrum disorder (ASD) is known to be a heritable neurodevelopmental disorder affecting more than 1% of the population but in the majority of ASD cases, the genetic cause has not been identified. Parent-of-origin effects have been highlighted as an important mechanism in the pathology of neurodevelopmental disorders such as Prader-Willi and Angelman syndrome, with individuals with these syndromes often exhibiting ASD symptoms. Consequently, systematic investigation of these effects in ASD is clearly an important line of investigation in elucidating the underlying genetic mechanisms...
November 23, 2016: European Journal of Human Genetics: EJHG
https://www.readbyqxmd.com/read/27856360/sensitivity-to-isoflurane-anesthesia-increases-in-autism-spectrum-disorder-shank3-%C3%A2-c-mutant-mouse-model
#4
Changsheng Li, Michele Schaefer, Christy Gray, Ya Yang, Orion Furmanski, Sufang Liu, Paul Worley, C David Mintz, Feng Tao, Roger A Johns
Autism is a heterogeneous developmental disorder characterized by impaired social interaction, impaired communication skills, and restricted and repetitive behavior. The abnormal behaviors of these patients can make their anesthetic and perioperative management difficult. Evidence in the literature suggests that some patients with autism or specific autism spectrum disorders (ASD) exhibit altered responses to pain and to anesthesia or sedation. A genetic mouse model of one particular ASD, Phelan McDermid Syndrome, has been developed that has a Shank3 haplotype truncation (Shank3(+/Δc))...
November 14, 2016: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/27846046/clinical-and-molecular-characterization-of-three-genomic-rearrangements-at-chromosome-22q13-3-associated-with-autism-spectrum-disorder
#5
Chia-Hsiang Chen, Hsin-I Chen, Hsiao-Mei Liao, Yann-Jang Chen, Jye-Siung Fang, Kuei-Fang Lee, Susan Shur-Fen Gau
OBJECTIVES: Chromosome 22q13 is a hot region of genomic rearrangements that may result in deletion, duplication, and translocation, and that may lead to neurodevelopmental disorders in affected patients. MATERIALS AND METHODS: We carried out an array-based comparative genomic hybridization analysis to detect copy number variations (CNVs) of genomic DNA in patients with autism spectrum disorders (ASD) who were consecutively recruited into our molecular genetic study of ASD...
November 11, 2016: Psychiatric Genetics
https://www.readbyqxmd.com/read/27795858/actin-dependent-alterations-of-dendritic-spine-morphology-in-shankopathies
#6
REVIEW
Tasnuva Sarowar, Andreas M Grabrucker
Shank proteins (Shank1, Shank2, and Shank3) act as scaffolding molecules in the postsynaptic density of many excitatory neurons. Mutations in SHANK genes, in particular SHANK2 and SHANK3, lead to autism spectrum disorders (ASD) in both human and mouse models. Shank3 proteins are made of several domains-the Shank/ProSAP N-terminal (SPN) domain, ankyrin repeats, SH3 domain, PDZ domain, a proline-rich region, and the sterile alpha motif (SAM) domain. Via various binding partners of these domains, Shank3 is able to bind and interact with a wide range of proteins including modulators of small GTPases such as RICH2, a RhoGAP protein, and βPIX, a RhoGEF protein for Rac1 and Cdc42, actin binding proteins and actin modulators...
2016: Neural Plasticity
https://www.readbyqxmd.com/read/27790361/a-systematic-variant-annotation-approach-for-ranking-genes-associated-with-autism-spectrum-disorders
#7
Eric Larsen, Idan Menashe, Mark N Ziats, Wayne Pereanu, Alan Packer, Sharmila Banerjee-Basu
BACKGROUND: The search for genetic factors underlying autism spectrum disorders (ASD) has led to the identification of hundreds of genes containing thousands of variants that differ in mode of inheritance, effect size, frequency, and function. A major challenge involves assessing the collective evidence in an unbiased, systematic manner for their functional relevance. METHODS: Here, we describe a scoring algorithm for prioritization of candidate genes based on the cumulative strength of evidence for each ASD-associated variant cataloged in AutDB (also known as SFARI Gene)...
2016: Molecular Autism
https://www.readbyqxmd.com/read/27785461/immature-neurons-and-radial-glia-but-not-astrocytes-or-microglia-are-altered-in-adult-cntnap2-and-shank3-mice-models-of-autism
#8
Elise C Cope, Brandy A Briones, Adam T Brockett, Susana Martinez, Pierre-Antoine Vigneron, Maya Opendak, Samuel S-H Wang, Elizabeth Gould
Autism spectrum disorder (ASD) is often associated with cognitive deficits and excessive anxiety. Neuroimaging studies have shown atypical structure and neural connectivity in the hippocampus, medial prefrontal cortex (mPFC), and striatum, regions associated with cognitive function and anxiety regulation. Adult hippocampal neurogenesis is involved in many behaviors that are disrupted in ASD, including cognition, anxiety, and social behaviors. Additionally, glial cells, such as astrocytes and microglia, are important for modulating neural connectivity during development, and glial dysfunction has been hypothesized to be a key contributor to the development of ASD...
September 2016: ENeuro
https://www.readbyqxmd.com/read/27741506/clinical-and-genomic-evaluation-of-a-chinese-patient-with-a-novel-deletion-associated-with-phelan-mcdermid-syndrome
#9
Dongzhu Lei, Shaoyuan Li, Santasree Banerjee, Haoqing Zhang, Caiyun Li, Shuai Hou, Danjing Chen, Haiying Yan, Hanmei Li, Huan Huan Peng, Saijun Liu, Xinxin Zhang, Zhiyu Peng, Jian Wang, Huanming Yang, Hui Huang, Jing Wu
Phelan-McDermid syndrome is a neurodevelopmental disorder caused by the terminal deletion of chromosome 22 (22q13) followed by the loss of function of the SHANK3 gene. Various terminal deletions of chromosome 22q13 are associated with Phelan-McDermid with a spectrum of phenotypic severity. Here, we have done a clinical molecular study of a Chinese proband with Phelan-McDermid syndrome. Both the proband and her younger brother are associated with this syndrome while their parents are phenotypically normal. We used a karyotype in order to detect the genotype of the proband and her younger brother...
October 10, 2016: Oncotarget
https://www.readbyqxmd.com/read/27692350/-epigenetics-implication-in-autism-spectrum-disorders-a-review
#10
M Hamza, S Halayem, R Mrad, S Bourgou, F Charfi, A Belhadj
BACKGROUND: The etiology of autism spectrum disorders (ASD) is complex and multifactorial, and the roles of genetic and environmental factors in its emergence have been well documented. Current research tends to indicate that these two factors act in a synergistic manner. The processes underlying this interaction are still poorly known, but epigenetic modifications could be the mediator in the gene/environment interface. The epigenetic mechanisms have been implicated in susceptibility to stress and also in the pathogenesis of psychiatric disorders including depression and schizophrenia...
September 27, 2016: L'Encéphale
https://www.readbyqxmd.com/read/27592227/expression-of-shank3-in-the-temporal-neocortex-of-patients-with-intractable-temporal-epilepsy-and-epilepsy-rat-models
#11
Yanke Zhang, Baobing Gao, Yan Xiong, Fangshuo Zheng, Xin Xu, Yong Yang, Yida Hu, Xuefeng Wang
SH3 and multiple ankyrin (ANK) repeat domain 3 (SHANK3) is a synaptic scaffolding protein enriched in the postsynaptic density of excitatory synapses. SHANK3 plays an important role in the formation and maturation of excitatory synapses. In the brain, SHANK3 directly or indirectly interacts with various synaptic molecules including N-methyl-D-aspartate receptor, the metabotropic glutamate receptor (mGluR), and α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor. Previous studies have shown that Autism spectrum disorder is a result of mutations of the main SHANK3 isoforms, which may be due to deficit in excitatory synaptic transmission and plasticity...
September 3, 2016: Cellular and Molecular Neurobiology
https://www.readbyqxmd.com/read/27581454/shank3-is-part-of-a-zinc-sensitive-signaling-system-that-regulates-excitatory-synaptic-strength
#12
Magali H Arons, Kevin Lee, Charlotte J Thynne, Sally A Kim, Claudia Schob, Stefan Kindler, Johanna M Montgomery, Craig C Garner
UNLABELLED: Shank3 is a multidomain scaffold protein localized to the postsynaptic density of excitatory synapses. Functional studies in vivo and in vitro support the concept that Shank3 is critical for synaptic plasticity and the trans-synaptic coupling between the reliability of presynaptic neurotransmitter release and postsynaptic responsiveness. However, how Shank3 regulates synaptic strength remains unclear. The C terminus of Shank3 contains a sterile alpha motif (SAM) domain that is essential for its postsynaptic localization and also binds zinc, thus raising the possibility that changing zinc levels modulate Shank3 function in dendritic spines...
August 31, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27577546/is-there-an-effect-of-intranasal-insulin-on-development-and-behaviour-in-phelan-mcdermid-syndrome-a-randomized-double-blind-placebo-controlled-trial
#13
Renée J Zwanenburg, Gianni Bocca, Selma A J Ruiter, Jan H Dillingh, Boudien C T Flapper, Edwin R van den Heuvel, Conny M A van Ravenswaaij-Arts
Phelan-McDermid syndrome (PMS) or 22q13.3 deletion syndrome is a rare neurodevelopmental disorder with at least 60 children and 35 adults diagnosed in the Netherlands. Clinical features are moderate to severe intellectual disability and behavioural problems in the autism spectrum. Other researchers had observed a beneficial effect of intranasal insulin on development and behaviour in a pilot study in six children with PMS. To validate this effect, we conducted a randomized, double-blind, placebo-controlled clinical trial using a stepped-wedge design...
August 31, 2016: European Journal of Human Genetics: EJHG
https://www.readbyqxmd.com/read/27562614/developmental-profiling-of-asd-related-shank3-transcripts-and-their-differential-regulation-by-valproic-acid-in-zebrafish
#14
Chun-Xue Liu, Xiao-Lan Peng, Chun-Chun Hu, Chun-Yang Li, Qiang Li, Xiu Xu
SHANK3 is a scaffolding protein that binds to various synaptic proteins at the postsynaptic density (PSD) of excitatory glutamatergic synapses. SHANK3 is not only strongly implicated in autism spectrum disorders (ASD) but also plays a critical role in human Phelan-McDermid syndrome (22q13.3 deletion syndrome). Accumulated experimental evidence demonstrates that the zebrafish model system is useful for studying the functions of ASD-related gene during early development. However, many basic features of shank3 transcript expression in zebrafish remain poorly understood...
November 2016: Development Genes and Evolution
https://www.readbyqxmd.com/read/27554343/the-spectrum-of-epilepsy-and-electroencephalographic-abnormalities-due-to-shank3-loss-of-function-mutations
#15
J Lloyd Holder, Michael M Quach
OBJECTIVE: The coincidence of autism with epilepsy is 27% in those individuals with intellectual disability.(1) Individuals with loss-of-function mutations in SHANK3 have intellectual disability, autism, and variably, epilepsy.(2-5) The spectrum of seizure semiologies and electroencephalography (EEG) abnormalities has never been investigated in detail. With the recent report that SHANK3 mutations are present in approximately 2% of individuals with moderate to severe intellectual disabilities and 1% of individuals with autism, determining the spectrum of seizure semiologies and electrographic abnormalities will be critical for medical practitioners to appropriately counsel the families of patients with SHANK3 mutations...
October 2016: Epilepsia
https://www.readbyqxmd.com/read/27530683/nargbp2-as-a-hub-molecule-in-the-etiology-of-various-neuropsychiatric-disorders
#16
Sang-Eun Lee, Sunghoe Chang
Recent studies have strongly implicated postsynaptic scaffolding proteins such as SAPAP3 or Shank3 in the pathogenesis of various mood disorders, including autism spectrum disorder, bipolar disorder (BD), and obsessive-compulsive disorders. Neural Abelson-related gene-binding protein 2 (nArgBP2) was originally identified as a protein that interacts with SAPAP3 and Shank3. Recent study shows that the genetic deletion of nArgBP2 in mice leads to manic/bipolar-like behavior resembling symptoms of BD. However, the function of nArgBP2 at synapse, or its connection with the synaptic dysfunctions, is completely unknown...
September 2016: BMB Reports
https://www.readbyqxmd.com/read/27519580/copy-number-variation-analysis-in-adults-with-catatonia-confirms-haploinsufficiency-of-shank3-as-a-predisposing-factor
#17
Jeroen Breckpot, Marieke Vercruyssen, Eddy Weyts, Sean Vandevoort, Greet D'Haenens, Griet Van Buggenhout, Lore Leempoels, Elise Brischoux-Boucher, Lionel Van Maldergem, Alessandra Renieri, Maria Antonietta Mencarelli, Carla D'Angelo, Veronica Mericq, Mariette J Hoffer, Maithé Tauber, Catherine Molinas, Claudia Castiglioni, Nathalie Brison, Joris R Vermeesch, Marina Danckaerts, Pascal Sienaert, Koenraad Devriendt, Annick Vogels
BACKGROUND: Catatonia is a motor dysregulation syndrome co-occurring with a variety of psychiatric and medical disorders. Response to treatment with benzodiazepines and electroconvulsive therapy suggests a neurobiological background. The genetic etiology however remains largely unexplored. Copy Number Variants (CNV), known to predispose to neurodevelopmental disorders, may play a role in the etiology of catatonia. METHODS: This study is exploring the genetic field of catatonia through CNV analysis in a cohort of psychiatric patients featuring intellectual disability and catatonia...
September 2016: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/27512916/evaluating-the-association-between-the-shank3-gene-and-bipolar-disorder
#18
Chen Zhang, Zhiguo Wu, Wu Hong, Daihui Peng, Yiru Fang
BACKGROUND: Previous studies have shown that the genes involved in synaptic density and plasticity were downregulated in bipolar disorder (BD) postmortem brains. The SHANK3 (SH3 and multiple ankyrin repeat domain 3) protein is a scaffold protein enriched in the postsynaptic density of excitatory synapses, and recent findings were suggestive of a possible role of SHANK3 in the development of BD. In this study, we aimed to evaluate the genetic association between the gene encoding SHANK3 (SHANK3) and BD in Han Chinese...
October 30, 2016: Psychiatry Research
https://www.readbyqxmd.com/read/27507650/long-term-potentiation-modulates-synaptic-phosphorylation-networks-and-reshapes-the-structure-of-the-postsynaptic-interactome
#19
Jing Li, Brent Wilkinson, Veronica A Clementel, Junjie Hou, Thomas J O'Dell, Marcelo P Coba
The postsynaptic site of neurons is composed of more than 1500 proteins arranged in protein-protein interaction complexes, the composition of which is modulated by protein phosphorylation through the actions of complex signaling networks. Components of these networks function as key regulators of synaptic plasticity, in particular hippocampal long-term potentiation (LTP). The postsynaptic density (PSD) is a complex multicomponent structure that includes receptors, enzymes, scaffold proteins, and structural proteins...
2016: Science Signaling
https://www.readbyqxmd.com/read/27492494/novel-shank3-mutant-exhibits-behaviors-with-face-validity-for-autism-and-altered-striatal-and-hippocampal-function
#20
Thomas C Jaramillo, Haley E Speed, Zhong Xuan, Jeremy M Reimers, Christine Ochoa Escamilla, Travis P Weaver, Shunan Liu, Irina Filonova, Craig M Powell
Mutations/deletions in the SHANK3 gene are associated with autism spectrum disorders and intellectual disability. Here, we present electrophysiological and behavioral consequences in novel heterozygous and homozygous mice with a transcriptional stop cassette inserted upstream of the PDZ domain-coding exons in Shank3 (Shank3(E13) ). Insertion of a transcriptional stop cassette prior to exon 13 leads to loss of the two higher molecular weight isoforms of Shank3. Behaviorally, both Shank3(E13) heterozygous (HET) and homozygous knockout (KO) mice display increased repetitive grooming, deficits in social interaction tasks, and decreased rearing...
August 5, 2016: Autism Research: Official Journal of the International Society for Autism Research
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