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Plasticity related proteins

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https://www.readbyqxmd.com/read/28737723/role-of-g-protein-coupled-receptors-in-the-regulation-of-structural-plasticity-and-cognitive-function
#1
REVIEW
Crystal C Y Leung, Yung H Wong
Cognition and other higher brain functions are known to be intricately associated with the capacity of neural circuits to undergo structural reorganization. Structural remodelling of neural circuits, or structural plasticity, in the hippocampus plays a major role in learning and memory. Dynamic modifications of neuronal connectivity in the form of dendritic spine morphology alteration, as well as synapse formation and elimination, often result in the strengthening or weakening of specific neural circuits that determine synaptic plasticity...
July 24, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28736134/stimulus-evoked-erk-dependent-phosphorylation-of-activity-regulated-cytoskeleton-associated-protein-arc-regulates-its-neuronal-subcellular-localization
#2
Oleksii Nikolaienko, Maria Steene Eriksen, Sudarshan Patil, Haruhiko Bito, Clive R Bramham
Activity-regulated cytoskeletal-associated protein (Arc) is implicated as a master regulator of long-term synaptic plasticity and memory formation in mammalian brain. Arc acts at synapses and within the nucleus, but the mechanisms controlling Arc localization and function are little known. As Arc transcription and translation are regulated by ERK signalling, we asked whether Arc protein itself is phosphorylated by ERK. GST-fused Arc of rat origin was able to pull down endogenous ERK2 from rat hippocampal lysates...
July 20, 2017: Neuroscience
https://www.readbyqxmd.com/read/28735226/perinatal-fluoxetine-effects-on-social-play-the-hpa-system-and-hippocampal-plasticity-in-pre-adolescent-male-and-female-rats-interactions-with-pre-gestational-maternal-stress
#3
Mary Gemmel, Mariah Hazlett, Eszter Bögi, Sonsoles De Lacalle, Lesley A Hill, Nikolaos Kokras, Geoffrey L Hammond, Christina Dalla, Thierry D Charlier, Jodi L Pawluski
Selective serotonin reuptake inhibitor medications (SSRIs) are the first lines of treatment for maternal affective disorders, and are prescribed to up to 10% of pregnant women. Concern has been raised about how perinatal exposure to these medications affect offspring neurobehavioral outcomes, particularly those related to social interactions, as recent research has reported conflicting results related to autism spectrum disorder (ASD) risk in children prenatally exposed to SSRIs. Therefore, the aim of this work was to investigate the effects of perinatal exposure to the SSRI fluoxetine on social play behaviors and the hypothalamic pituitary adrenal system, using a model of pre-gestational maternal stress...
July 15, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28734961/radix-puerariae-modulates-glutamatergic-synaptic-architecture-and-potentiates-functional-synaptic-plasticity-in-primary-hippocampal-neurons
#4
Mohammad Maqueshudul Haque Bhuiyan, Md Nazmul Haque, Md Mohibbullah, Yung Kyu Kim, Il Soo Moon
ETHNOPHARMACOLOGICAL RELEVANCE: Neurologic disorders are frequently characterized by synaptic pathology, including abnormal density and morphology of dendritic spines, synapse loss, and aberrant synaptic signaling and plasticity. Therefore, to promote and/or protect synapses by the use of natural molecules capable of modulating neurodevelopmental events, such as, spinogenesis and synaptic plasticity, could offer a preventive and curative strategy for nervous disorders associated with synaptic pathology...
July 19, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28732667/contribution-of-bdnf-trkb-signalling-in-the-racc-to-the-development-of-pain-related-aversion-via-activation-of-erk-in-rats-with-spared-nerve-injury
#5
Xu Wang, Le Zhang, Yufeng Zhan, Dengping Li, Yuangui Zhang, Gongming Wang, Mengyuan Zhang
The rostral anterior cingulate cortex (rACC) is a key structure in mediating the negative affective component of chronic pain. Brain-derived neurotrophic factor (BDNF) is known to play a critical role in activity-dependent synaptic plasticity, learning and memory. It has been shown that BDNF signalling in the rACC might be involved in spontaneous pain-related aversion, but its underlying mechanism is still largely unknown. To address this question, we measured the mRNA and protein levels of BDNF in the rACC after nerve injury and found that BDNF expression was markedly higher in nerve-injured rats than in controls...
July 18, 2017: Brain Research
https://www.readbyqxmd.com/read/28731141/botulinum-toxin-a-improves-adipose-tissue-engraftment-by-promoting-cell-proliferation-adipogenesis-and-angiogenesis
#6
Qi Tang, Chang Chen, Xiaqi Wang, Wei Li, Yan Zhang, Muyao Wang, Wei Jing, Hang Wang, Weihua Guo, Weidong Tian
Adipose tissue engraftment has become a well-established therapy in plastic and reconstructive surgery used to restore age-related or injury-related soft tissue loss. However, the unpredictable absorption rates limit its further application. Some clinicians have noted that more optimal aesthetic results are achieved when botulinum toxin A (BoNTA) is applied prior to adipose tissue grafting. In the present study, we transplanted allogeneic adipose tissue treated with or without BoNTA in SD rats in vivo. We subsequently evaluated the survival rate (weight, volume, apoptosis and cellular integrity) and revascularization of the adipose tissue...
July 19, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28730478/high-content-imaging-and-rnai-screens-for-investigating-kinase-network-plasticity
#7
Simon R Stockwell, Sibylle Mittnacht
High-content imaging connects the information-rich method of microscopy with the systematic objective principles of software-driven analysis. Suited to automation and, therefore, considerable scale-up of study size, this approach can deliver multiparametric data over cell populations or at the level of the individual cell and has found considerable utility in reverse genetic and pharmacological screens. Here we present a method to screen small interfering RNA (siRNA) libraries allowing subsequent observation of the impact of each knockdown on two interlinked, high-content, G1-/S-phase cell cycle transition assays related to cyclin-dependent kinase (CDK) 2 activity...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28727780/comparative-analysis-of-signature-genes-in-prrsv-infected-porcine-monocyte-derived-cells-to-different-stimuli
#8
Laura C Miller, Damarius S Fleming, Xiangdong Li, Darrell O Bayles, Frank Blecha, Yongming Sang
Monocyte-derived DCs (mDCs) are major target cells in porcine reproductive and respiratory syndrome virus (PRRSV) pathogenesis; however, the plasticity of mDCs in response to activation stimuli and PRRSV infection remains unstudied. In this study, we polarized mDCs, and applied genome-wide transcriptomic analysis and predicted protein-protein interaction networks to compare signature genes involved in mDCs activation and response to PRRSV infection. Porcine mDCs were polarized with mediators for 30 hours, then mock-infected, infected with PRRSV strain VR2332, or a highly pathogenic PRRSV strain (rJXwn06), for 5 h...
2017: PloS One
https://www.readbyqxmd.com/read/28723942/comparative-analysis-of-vaginal-microbiota-sampling-using-16s-rrna-gene-analysis
#9
Seppo Virtanen, Ilkka Kalliala, Pekka Nieminen, Anne Salonen
BACKGROUND: Molecular methods such as next-generation sequencing are actively being employed to characterize the vaginal microbiota in health and disease. Previous studies have focused on characterizing the biological variation in the microbiota, and less is known about how factors related to sampling contribute to the results. Our aim was to investigate the impact of a sampling device and anatomical sampling site on the quantitative and qualitative outcomes relevant for vaginal microbiota research...
2017: PloS One
https://www.readbyqxmd.com/read/28720382/activated-leukocyte-cell-adhesion-molecule-is-involved-in-excitatory-synaptic-transmission-and-plasticity-in-the-rat-spinal-dorsal-horn
#10
Eun-Sung Park, Sang-Min Jeon, Haein Weon, Hee-Jung Cho, Dong-Ho Youn
Activated leukocyte cell adhesion molecule (ALCAM), a member of type I transmembrane immunoglobulin superfamily of cell adhesion molecule, is expressed in the surface membrane of various cell types including neurons. In the spinal cord dorsal horn (DH), the first gate for the sensory and pain transmission to the brain, the expression and function of ALCAM have not been known yet. Therefore, we here investigate the synaptic function of ALCAM in the substantia gelatinosa (lamina II) of the spinal DH, as well as its expression in the DH...
July 15, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28713263/the-frequency-dependent-aerobic-exercise-effects-of-hypothalamic-gabaergic-expression-and-cardiovascular-functions-in-aged-rats
#11
Yan Li, Ziqi Zhao, Jiajia Cai, Boya Gu, Yuanyuan Lv, Li Zhao
A decline in cardiovascular modulation is a feature of the normal aging process and associated with cardiovascular diseases (CVDs) such as hypertension and stroke. Exercise training is known to promote cardiovascular adaptation in young animals and positive effects on motor and cognitive capabilities, as well as on brain plasticity for all ages in mice. Here, we examine the question of whether aerobic exercise interventions may impact the GABAergic neurons of the paraventricular nucleus (PVN) in aged rats which have been observed to have a decline in cardiovascular integration function...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28712684/cerebellar-perineuronal-nets-in-cocaine-induced-pavlovian-memory-site-matters
#12
Maria Carbo-Gas, Josep Moreno-Rius, Julian Guarque-Chabrera, Dolores Vazquez-Sanroman, Isis Gil-Miravet, Daniela Carulli, Freek Hoebeek, Chris De Zeeuw, Carla Sanchis-Segura, Marta Miquel
One of the key mechanisms for the stabilization of synaptic changes near the end of critical periods for experience-dependent plasticity is the formation of specific lattice extracellular matrix structures called perineuronal nets (PNNs). The formation of drug memories depends on local circuits in the cerebellum, but it is unclear to what extent it may also relate to changes in their PNN. Here, we investigated changes in the PNNs of the cerebellum following cocaine-induced preference conditioning. The formation of cocaine-related preference memories increased expression of PNN-related proteins surrounding Golgi inhibitory interneurons as well as that of cFos in granule cells at the apex of the cerebellar cortex...
July 13, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28709864/the-role-of-human-natural-killer-1-hnk-1-carbohydrate-in-neuronal-plasticity-and-disease
#13
REVIEW
Jyoji Morise, Hiromu Takematsu, Shogo Oka
BACKGROUND: The human natural killer-1 (HNK-1) carbohydrate, a unique trisaccharide possessing sulfated glucuronic acid in a non-reducing terminus (HSO3-3GlcAß1-3Galß1-4GlcNAc-), is highly expressed in the nervous system and its spatiotemporal expression is strictly regulated. Mice deficient in the gene encoding a key enzyme, GlcAT-P, of the HNK-1 biosynthetic pathway exhibit almost complete disappearance of the HNK-1 epitope in the brain, significant reduction of long-term potentiation, and aberration of spatial learning and memory formation...
July 12, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28708926/comparison-of-two-porcine-collagen-membranes-combined-with-rhbmp-2-and-rhbmp-9-on-osteoblast-behavior-in-vitro
#14
Masako Fujioka-Kobayashi, Benoit Schaler, Yoshinori Shirakata, Toshiaki Nakamura, Kazuyuki Noguchi, Yufeng Zhang, Richard J Miron
PURPOSE: To investigate the bone-inducing properties of two types of collagen membranes in combination with recombinant human bone morphogenetic protein (rhBMP)-2 and rhBMP-9 on osteoblast behavior. MATERIALS AND METHODS: Porcine pericardium collagen membranes (PPCM) and porcine dermis-derived collagen membranes (PDCM) were coated with either rhBMP-2 or rhBMP-9. The adsorption and release abilities were first investigated via enzyme-linked immunosorbent assay up to 10 days...
July 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28699899/xuefu-zhuyu-decoction-improves-cognitive-impairment-in-experimental-traumatic-brain-injury-via-synaptic-regulation
#15
Jing Zhou, Tao Liu, Hanjin Cui, Rong Fan, Chunhu Zhang, Weijun Peng, Ali Yang, Lin Zhu, Yang Wang, Tao Tang
An overarching consequence of traumatic brain injury (TBI) is the cognitive impairment. It may hinder individual performance of daily tasks and determine people's subjective well-being. The damage to synaptic plasticity, one of the key mechanisms of cognitive dysfunction, becomes the potential therapeutic strategy of TBI. In this study, we aimed to investigate whether Xuefu Zhuyu Decoction (XFZYD), a traditional Chinese medicine, provided a synaptic regulation to improve cognitive disorder following TBI. Morris water maze and modified neurological severity scores were performed to assess the neurological and cognitive abilities...
June 30, 2017: Oncotarget
https://www.readbyqxmd.com/read/28688339/brain-derived-neurotrophic-factor-signaling-plays-a-role-in-resilience-to-stress-promoted-by-isoquinoline-in-defeated-mice
#16
Ana Paula Pesarico, Suzan G Rosa, Franciele Martini, Tales A Goulart, Gilson Zeni, Cristina Wayne Nogueira
Certain stressful life events have been associated with the onset of depression. This study aims to investigate if 7-fluoro-1,3-diphenylisoquinoline-1-amine (FDPI) is effective against social avoidance induced by social defeat stress model in mice. Furthermore, it was investigated the effects of FDPI in the mouse prefrontal cortical plasticity-related proteins and some parameters of toxicity. Adult Swiss mice were subjected to social defeat stress for 10 days. Two protocols with FDPI were carried out: 1- FDPI (25 mg/kg, intragastric) was administered to mice 24 h after the last social defeat stress episode; 2- FDPI (1-25 mg/kg, intragastric) was administered to mice once a day for 10 days concomitant with the social defeat stress...
June 30, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28688003/increased-training-intensity-induces-proper-membrane-localization-of-actin-remodeling-proteins-in-the-hippocampus-preventing-cognitive-deficits-implications-for-fragile-x-syndrome
#17
L A Martinez, Maria Victoria Tejada-Simon
Behavioral intervention therapy has proven beneficial in the treatment of autism and intellectual disabilities (ID), raising the possibility of certain changes in molecular mechanisms activated by these interventions that may promote learning. Fragile X syndrome (FXS) is a neurodevelopmental disorder characterized by autistic features and intellectual disability and can serve as a model to examine mechanisms that promote learning. FXS results from mutations in the fragile X mental retardation 1 gene (Fmr1) that prevents expression of the Fmr1 protein (FMRP), a messenger RNA (mRNA) translation regulator at synapses...
July 8, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28687316/levodopa-l-dopa-attenuates-endoplasmic-reticulum-stress-response-and-cell-death-signaling-through-drd2-in-sh-sy5y-neuronal-cells-under-%C3%AE-synuclein-induced-toxicity
#18
Juhyun Song, Byeong C Kim, Dai-Trang T Nguyen, Manikandan Samidurai, Seong-Min Choi
Parkinson's disease (PD) is characterized by the formation of Lewy bodies (LBs) in dopaminergic neurons. α-Synuclein (α-syn), a major protein component of LBs, is known to regulate synaptic plasticity, with a crucial role in memory and motor function in the central nervous system. Levodopa (L-3,4-dihydroxyphenylalanine; also known as L-DOPA) is considered the most effective medication for controlling the symptoms of PD. However, it is unclear whether L-DOPA improves the neuropathology of PD. In the present study, we investigated the effect of L-DOPA on SH-SY5Y neuronal cells under α-syn-induced toxicity...
July 4, 2017: Neuroscience
https://www.readbyqxmd.com/read/28687152/valorisation-of-chicken-feathers-characterisation-of-chemical-properties
#19
Tamrat Tesfaye, Bruce Sithole, Deresh Ramjugernath, Viren Chunilall
The characterisation of the chemical properties of the whole chicken feather and its fractions (barb and rachis), was undertaken to identify opportunities for valorizing this waste product. The authors have described the physical, morphological, mechanical, electrical and thermal properties of the chicken feathers and related them to potential valorisation routes of the waste. However, identification of their chemical properties is necessary to complete a comprehensive description of chicken feather fractions...
July 4, 2017: Waste Management
https://www.readbyqxmd.com/read/28679744/coordinated-changes-in-mutation-and-growth-rates-induced-by-genome-reduction
#20
Issei Nishimura, Masaomi Kurokawa, Liu Liu, Bei-Wen Ying
Genome size is determined during evolution, but it can also be altered by genetic engineering in laboratories. The systematic characterization of reduced genomes provides valuable insights into the cellular properties that are quantitatively described by the global parameters related to the dynamics of growth and mutation. In the present study, we analyzed a small collection of W3110 Escherichia coli derivatives containing either the wild-type genome or reduced genomes of various lengths to examine whether the mutation rate, a global parameter representing genomic plasticity, was affected by genome reduction...
July 5, 2017: MBio
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