keyword
MENU ▼
Read by QxMD icon Read
search

psd-95

keyword
https://www.readbyqxmd.com/read/28819097/the-non-coding-rna-bc1-regulates-experience-dependent-structural-plasticity-and-learning
#1
Victor Briz, Leonardo Restivo, Emanuela Pasciuto, Konrad Juczewski, Valentina Mercaldo, Adrian C Lo, Pieter Baatsen, Natalia V Gounko, Antonella Borreca, Tiziana Girardi, Rossella Luca, Julie Nys, Rogier B Poorthuis, Huibert D Mansvelder, Gilberto Fisone, Martine Ammassari-Teule, Lutgarde Arckens, Patrik Krieger, Rhiannon Meredith, Claudia Bagni
The brain cytoplasmic (BC1) RNA is a non-coding RNA (ncRNA) involved in neuronal translational control. Absence of BC1 is associated with altered glutamatergic transmission and maladaptive behavior. Here, we show that pyramidal neurons in the barrel cortex of BC1 knock out (KO) mice display larger excitatory postsynaptic currents and increased spontaneous activity in vivo. Furthermore, BC1 KO mice have enlarged spine heads and postsynaptic densities and increased synaptic levels of glutamate receptors and PSD-95...
August 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/28801650/regulation-of-the-human-phosphatase-ptpn4-by-the-inter-domain-linker-connecting-the-pdz-and-the-phosphatase-domains
#2
Célia Caillet-Saguy, Angelo Toto, Raphael Guerois, Pierre Maisonneuve, Eva di Silvio, Kristi Sawyer, Stefano Gianni, Nicolas Wolff
Human protein tyrosine phosphatase non-receptor type 4 (PTPN4) has been shown to prevent cell death. The active form of human PTPN4 consists of two globular domains, a PDZ (PSD-95/Dlg/ZO-1) domain and a phosphatase domain, tethered by a flexible linker. Targeting its PDZ domain abrogates this protection and triggers apoptosis. We previously demonstrated that the PDZ domain inhibits the phosphatase activity of PTPN4 and that the mere binding of a PDZ ligand is sufficient to release the catalytic inhibition. We demonstrate here that the linker connecting the PDZ domain and the phosphatase domain is involved in the regulation of the phosphatase activity in both PDZ-related inhibition and PDZ ligand-related activation events...
August 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28790172/postsynaptic-density-95-psd-95-serine-561-phosphorylation-regulates-a-conformational-switch-and-bidirectional-dendritic-spine-structural-plasticity
#3
Qian Wu, Miao Sun, Laura P Bernard, Huaye Zhang
PSD-95 is a major synaptic scaffolding protein that plays a key role in bidirectional synaptic plasticity, which is a process important for learning and memory. It is known that PSD-95 shows increased dynamics upon induction of plasticity. Yet the underlying structural and functional changes in PSD-95 that mediate its role in plasticity remain unclear. Here we show that phosphorylation of PSD-95 at Ser561 in its GK domain, which is mediated by the partitioning defective 1 (Par1) kinases, regulates a conformational switch and is important for bidirectional plasticity...
August 8, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28771575/zl006-a-small-molecule-inhibitor-of-psd-95-nnos-interaction-does-not-induce-antidepressant-like-effects-in-two-genetically-predisposed-rat-models-of-depression-and-control-animals
#4
Sandra Tillmann, Vitor Silva Pereira, Nico Liebenberg, Anne Karina Christensen, Gregers Wegener
N-methyl-D-aspartate receptor (NMDA-R) antagonists and nitric oxide inhibitors have shown promising efficacy in depression but commonly induce adverse events. To circumvent these, a more indirect disruption of the nitric oxide synthase/postsynaptic density protein 95 kDa complex at the NMDA-R has been proposed. This disruption can be achieved using small molecule inhibitors such as ZL006, which has attracted attention as ischemic stroke therapy in rodents and has been proposed as a potential novel treatment for depression...
2017: PloS One
https://www.readbyqxmd.com/read/28769761/identification-of-the-role-of-mir-142-5p-in-alzheimer-s-disease-by-comparative-bioinformatics-and-cellular-analysis
#5
Juhyun Song, Young-Kook Kim
Alzheimer's disease (AD) is the most common neurodegenerative disease characterized by the formation of amyloid beta (Aβ) or tau protein aggregates, the hallmark of cognitive decline. MicroRNAs (miRNAs) have emerged as critical factors in neurogenesis and synaptic functions in the central nervous system (CNS). Recent studies have reported alterations in miRNA expression in patients with AD. However, miRNAs associated with AD varied with patient groups or experimental models, suggesting the need for a comparative study to identify miRNAs commonly dysregulated in diverse AD models...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28760951/cdk5-dependent-phosphorylation-of-liprin%C3%AE-1-mediates-neuronal-activity-dependent-synapse-development
#6
Huiqian Huang, Xiaochen Lin, Zhuoyi Liang, Teng Zhao, Shengwang Du, Michael M T Loy, Kwok-On Lai, Amy K Y Fu, Nancy Y Ip
The experience-dependent modulation of brain circuitry depends on dynamic changes in synaptic connections that are guided by neuronal activity. In particular, postsynaptic maturation requires changes in dendritic spine morphology, the targeting of postsynaptic proteins, and the insertion of synaptic neurotransmitter receptors. Thus, it is critical to understand how neuronal activity controls postsynaptic maturation. Here we report that the scaffold protein liprinα1 and its phosphorylation by cyclin-dependent kinase 5 (Cdk5) are critical for the maturation of excitatory synapses through regulation of the synaptic localization of the major postsynaptic organizer postsynaptic density (PSD)-95...
August 15, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28746067/perturbing-nr2b-psd-95-interaction-relieves-neuropathic-pain-by-inactivating-camkii-creb-signaling
#7
Fangxia Xu, Xin Zhao, Lin Liu, Jia Song, Yingjun Zhu, Shuaishuai Chu, Xueming Shao, Xiuxiu Li, Zhengliang Ma, Xiaoping Gu
Neuropathic pain is characterized by central sensitization. The interaction between N-methyl-D-aspartate receptors (NMDARs) and postsynaptic density protein-95 (PSD-95) plays a major role in central sensitization. Here, we aimed to investigate the analgesic effect of disruption of the interaction between NMDAR and PSD-95. Chronic dorsal root ganglia compression model rats were used to mimic sciatica. Thermal hyperalgesia and mechanical allodynia were evaluated. The expression of spinal phospho-NR2B, PSD-95, calcium/calmodulin-dependent protein kinase II (CaMKII), and cAMP response element binding protein (CREB) was measured using western blotting...
September 6, 2017: Neuroreport
https://www.readbyqxmd.com/read/28723268/assay-of-calcium-transients-and-synapses-in-rat-hippocampal-neurons-by-kinetic-image-cytometry-and-high-content-analysis-an-in-vitro-model-system-for-postchemotherapy-cognitive-impairment
#8
Patrick M McDonough, Natalie L Prigozhina, Ranor C B Basa, Jeffrey H Price
Postchemotherapy cognitive impairment (PCCI) is commonly exhibited by cancer patients treated with a variety of chemotherapeutic agents, including the endocrine disruptor tamoxifen (TAM). The etiology of PCCI is poorly understood. Our goal was to develop high-throughput assay methods to test the effects of chemicals on neuronal function applicable to PCCI. Rat hippocampal neurons (RHNs) were plated in 96- or 384-well dishes and exposed to test compounds (forskolin [FSK], 17β-estradiol [ES]), TAM or fulvestrant [FUL], aka ICI 182,780) for 6-14 days...
July 2017: Assay and Drug Development Technologies
https://www.readbyqxmd.com/read/28720484/long-term-enzyme-replacement-therapy-improves-neurocognitive-functioning-and-hippocampal-synaptic-plasticity-in-immune-tolerant-alpha-mannosidosis-mice
#9
Stijn Stroobants, Markus Damme, Ann Van der Jeugd, Ben Vermaercke, Claes Andersson, Jens Fogh, Paul Saftig, Judith Blanz, Rudi D'Hooge
Alpha-mannosidosis is a glycoproteinosis caused by deficiency of lysosomal acid alpha-mannosidase (LAMAN), which markedly affects neurons of the central nervous system (CNS), and causes pathognomonic intellectual dysfunction in the clinical condition. Cognitive improvement consequently remains a major therapeutic objective in research on this devastating genetic error. Immune-tolerant LAMAN knockout mice were developed to evaluate the effects of enzyme replacement therapy (ERT) by prolonged administration of recombinant human enzyme...
July 15, 2017: Neurobiology of Disease
https://www.readbyqxmd.com/read/28701415/structure-of-psd-95-map1a-complex-reveals-unique-target-recognition-mode-of-maguk-gk-domain
#10
Yitan Xia, Yuan Shang, Rongguang Zhang, Jinwei Zhu
The PSD-95 family of membrane-associated guanylate kinases (MAGUKs) are major synaptic scaffold proteins and play crucial roles in the dynamic regulation of dendritic remodeling which is understood to be the foundation of synaptogenesis and synaptic plasticity. The guanylate kinase (GK) domain of MAGUK family proteins functions as a phosphor-peptide binding module. However, the GK domain of PSD-95 has been found to directly bind to a peptide sequence within the C-terminal region of neuronal-specific microtubule-associated protein 1A (MAP1A), though the detailed molecular mechanism governing this phosphorylation-independent interaction at the atomic level is missing...
July 12, 2017: Biochemical Journal
https://www.readbyqxmd.com/read/28698933/distinct-effects-on-the-dendritic-arbor-occur-by-microbead-versus-bath-administration-of-brain-derived-neurotrophic-factor
#11
Kate M O'Neill, Munjin Kwon, Katherine E Donohue, Bonnie L Firestein
Proper communication among neurons depends on an appropriately formed dendritic arbor, and thus, aberrant changes to the arbor are implicated in many pathologies, ranging from cognitive disorders to neurodegenerative diseases. Due to the importance of dendritic shape to neuronal network function, the morphology of dendrites is tightly controlled and is influenced by both intrinsic and extrinsic factors. In this work, we examine how brain-derived neurotrophic factor (BDNF), one of the most well-studied extrinsic regulators of dendritic branching, affects the arbor when it is applied locally via microbeads to cultures of hippocampal neurons...
July 11, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28692247/site-specific-phosphorylation-of-psd-95-pdz-domains-reveals-fine-tuned-regulation-of-protein-protein-interactions
#12
Søren W Pedersen, Louise Albertsen, Griffin E Moran, Brie Levesque, Stine B Pedersen, Lina Bartels, Hannah Wapenaar, Fe Yei, Mingjie Zhang, Mark E Bowen, Kristian Strømgaard
The postsynaptic density protein of 95 kDa (PSD-95) is a key scaffolding protein that controls signaling at synapses in the brain through interactions of its PDZ domains with the C-termini of receptors, ion channels and enzymes. PSD-95 is highly regulated by phosphorylation. To explore the effect of phosphorylation on PSD-95, we used semisynthetic strategies to introduce phosphorylated amino acids at four positions within the PDZ domains and examined the effects on interactions with a large set of binding partners...
July 10, 2017: ACS Chemical Biology
https://www.readbyqxmd.com/read/28645745/dna-methylation-of-dlg4-and-gja-1-of-human-hippocampus-and-prefrontal-cortex-in-major-depression-is-unchanged-in-comparison-to-healthy-individuals
#13
Oliver Kaut, Amit Sharma, Ina Schmitt, René Hurlemann, Ullrich Wüllner
Epigenetic alterations provide a potential mechanism to account for the numerous gene-environment interactions that have been reported in association with neuropsychiatric phenotypes. In context to major depression disorder (MDD), where postmortem and neuroimaging studies provide insights into dysfunctional brain regions, involvement of genetic heterogeneity also revealed the complexity of this disorder. Despite intensive research during the past several decades and information from genome wide studies, pathophysiology of depressive disorders remained elusive...
June 20, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28630404/activation-of-d1r-pka-mtor-signaling-cascade-in-medial-prefrontal-cortex-underlying-the-antidepressant-effects-of-l-spd
#14
Bing Zhang, Fei Guo, Yuqin Ma, Yingcai Song, Rong Lin, Fu-Yi Shen, Guo-Zhang Jin, Yang Li, Zhi-Qiang Liu
Major depressive disorder (MDD) is a common neuropsychiatric disorder characterized by diverse symptoms. Although several antidepressants can influence dopamine system in the medial prefrontal cortex (mPFC), but the role of D1R or D2R subtypes of dopamine receptor during anti-depression process is still vague in PFC region. To address this question, we investigate the antidepressant effect of levo-stepholidine (l-SPD), an antipsychotic medication with unique pharmacological profile of D1R agonism and D2R antagonism, and clarified its molecular mechanisms in the mPFC...
June 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28623607/presenilin-1-targeted-morpholino-induces-cognitive-deficits-increased-brain-a%C3%AE-1-42-and-decreased-synaptic-marker-psd-95-in-zebrafish-larvae
#15
Laura Roesler Nery, Natalia Eltz Silva, Raphaela Fonseca, Monica Ryff Moreira Vianna
Presenilins are transmembrane proteases required for the proteolytic cleavage of Notch and also act as the catalytic core of the γ-secretase complex, which is responsible for the final cleavage of the amyloid precursor protein into Amyloid-β (Aβ) peptides of varying lengths. Presenilin-1 gene (psen1) mutations are the main cause of early-onset autosomal-dominant Familial Alzheimer Disease. Elucidating the roles of Presenilin-1 and other hallmark proteins involved in Alzheimer's disease is crucial for understanding the disease etiology and underlying molecular mechanisms...
June 16, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28604739/autism-like-behaviours-and-enhanced-memory-formation-and-synaptic-plasticity-in-lrfn2-salm1-deficient-mice
#16
Naoko Morimura, Hiroki Yasuda, Kazuhiko Yamaguchi, Kei-Ichi Katayama, Minoru Hatayama, Naoko H Tomioka, Maya Odagawa, Akiko Kamiya, Yoshimi Iwayama, Motoko Maekawa, Kazuhiko Nakamura, Hideo Matsuzaki, Masatsugu Tsujii, Kazuyuki Yamada, Takeo Yoshikawa, Jun Aruga
Lrfn2/SALM1 is a PSD-95-interacting synapse adhesion molecule, and human LRFN2 is associated with learning disabilities. However its role in higher brain function and underlying mechanisms remain unknown. Here, we show that Lrfn2 knockout mice exhibit autism-like behavioural abnormalities, including social withdrawal, decreased vocal communications, increased stereotyped activities and prepulse inhibition deficits, together with enhanced learning and memory. In the hippocampus, the levels of synaptic PSD-95 and GluA1 are decreased...
June 12, 2017: Nature Communications
https://www.readbyqxmd.com/read/28602762/different-patterns-of-changes-between-actin-dynamics-and-synaptic-density-in-the-rat-s-primary-visual-cortex-during-a-special-period-of-visual-development
#17
Mei-Qing Chen, Ai-Ling Bi, Yue-Ying Zhang, Qin Yan, Yuan-Yuan Sun, Xiu-Yan Zhang, Xian-Zhen Ma, Hong-Sheng Bi
In our previous study, we found that the normalized levels of the synaptosomal filament actin (F-actin) to monomeric global actin (G-actin) ratio in the primary visual cortex (V1) of rats was significantly lower on postnatal day (P) 45 compared with P30, however, the synaptic density in the monocular area of primary visual cortex (V1M) maintained a stable high level from P30 to P45. The mechanisms underlying the different patterned of change in synaptic density and actin rearrangements from P30 to P45 are unclear...
June 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/28593193/differential-expression-and-cell-type-specificity-of-perineuronal-nets-in-hippocampus-medial-entorhinal-cortex-and-visual-cortex-examined-in-the-rat-and-mouse
#18
Kristian Kinden Lensjø, Ane Charlotte Christensen, Simen Tennøe, Marianne Fyhn, Torkel Hafting
Perineuronal nets (PNNs) are specialized extracellular matrix (ECM) structures that condense around the soma and proximal dendrites of subpopulations of neurons. Emerging evidence suggests that they are involved in regulating brain plasticity. However, the expression of PNNs varies between and within brain areas. A lack of quantitative studies describing the distribution and cell-specificity of PNNs makes it difficult to reveal the functional roles of PNNs. In the current study, we examine the distribution of PNNs and the identity of PNN-enwrapped neurons in three brain areas with different cognitive functions: the dorsal hippocampus, medial entorhinal cortex (mEC) and primary visual cortex (V1)...
May 2017: ENeuro
https://www.readbyqxmd.com/read/28576729/afferent-synaptogenesis-between-ectopic-hair-cell-like-cells-and-neurites-of-spiral-ganglion-induced-by-atoh1-in-mammals-in-vitro
#19
Wen-Wei Luo, Rui Ma, Xiang Cheng, Xiao-Yu Yang, Zhao Han, Dong-Dong Ren, Ping Chen, Fang-Lu Chi, Juan-Mei Yang
Newly formed ectopic hair-cell-like cells (EHCLCs) induced by overexpression of atonal homolog 1 (Atoh1) in vitro were found to possess features of endogenous hair cells (HCs) in previous reports and in the present study. However, limited information is available regarding whether EHCLCs and native spiral ganglion neurons (SGNs) form afferent synapses, which are important for the restoration of hearing. In the current study, we focused on the afferent synaptogenesis between EHCLCs and SGN-derived dendrites...
May 31, 2017: Neuroscience
https://www.readbyqxmd.com/read/28576649/anti-androgenic-effects-of-bisphenol-a-on-spatial-memory-and-synaptic-plasticity-of-the-hippocampus-in-mice
#20
Zhaoqing Fang, Qingjie Zhu, Ting Gu, Xiuying Shen, Yang Yang, Yufeng Liang, Zigui Zhang, Xiaohong Xu
Bisphenol-A (BPA) is a common environmental endocrine disruptor. Our recent studies found that exposure to BPA in both adolescent and adulthood sex-specifically impaired spatial memory in male mice. In this study, 11-week-old gonadectomied (GDX) male mice daily received subcutaneous injections of testosterone propionate (TP, 0.5mg/kg), TP and BPA (0.4 and 4mg/kg), or vehicle for 45days. The results of Morris water maze task showed that exposure to BPA did not affect the spatial memory of GDX mice but impaired that of sham (4mg/kg/day) and TP-treated GDX mice (0...
June 8, 2017: Hormones and Behavior
keyword
keyword
40344
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"