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Neuroscience Bulletin

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https://www.readbyqxmd.com/read/28795356/drosophila-studies-on-autism-spectrum-disorders
#1
REVIEW
Yao Tian, Zi Chao Zhang, Junhai Han
In the past decade, numerous genes associated with autism spectrum disorders (ASDs) have been identified. These genes encode key regulators of synaptogenesis, synaptic function, and synaptic plasticity. Drosophila is a prominent model system for ASD studies to define novel genes linked to ASDs and decipher their molecular roles in synaptogenesis, synaptic function, synaptic plasticity, and neural circuit assembly and consolidation. Here, we review Drosophila studies on ASD genes that regulate synaptogenesis, synaptic function, and synaptic plasticity through modulating chromatin remodeling, transcription, protein synthesis and degradation, cytoskeleton dynamics, and synaptic scaffolding...
August 9, 2017: Neuroscience Bulletin
https://www.readbyqxmd.com/read/28791585/transcription-factors-potential-cell-death-markers-in-parkinson-s-disease
#2
REVIEW
Ronglin Wang, Shaosong Yang, Tiejian Nie, Gang Zhu, Dayun Feng, Qian Yang
Parkinson's disease (PD) is a neurodegenerative disease with a long preclinical phase. The continuous loss of dopaminergic (DA) neurons is one of the pathogenic hallmarks of PD. Diagnosis largely depends on clinical observation, but motor dysfunctions do not emerge until 70%-80% of the nigrostriatal nerve terminals have been destroyed. Therefore, a biomarker that indicates the degeneration of DA neurons is urgently needed. Transcription factors are sequence-specific DNA-binding proteins that regulate RNA synthesis from a DNA template...
August 8, 2017: Neuroscience Bulletin
https://www.readbyqxmd.com/read/28791571/peripheral-lymphocyte-subsets-as-a-marker-of-parkinson-s-disease-in-a-chinese-population
#3
Luan Cen, Chaohao Yang, Shuxuan Huang, Miaomiao Zhou, Xiaolu Tang, Kaiping Li, Wenyuan Guo, Zhuohua Wu, Mingshu Mo, Yousheng Xiao, Xiang Chen, Xinling Yang, Qinhui Huang, Chaojun Chen, Shaogang Qu, Pingyi Xu
In this study, we conducted a clinical analysis of lymphocyte subtypes in 268 patients with Parkinson's disease (PD) to assess their clinical impact as a potential marker of advanced PD in Chinese patients. The participants comprised 268 sporadic PD patients and 268 healthy controls. The numbers of natural killer (NK) cells and CD3+, CD3+CD4+, CD3+CD8+, and CD19+ lymphocytes from peripheral blood were determined by immunostaining and flow cytometric analysis and the percentages of these CD+ T cells were calculated...
August 8, 2017: Neuroscience Bulletin
https://www.readbyqxmd.com/read/28786074/akt-inhibitor-perifosine-prevents-epileptogenesis-in-a-rat-model-of-temporal-lobe-epilepsy
#4
Feng Zhu, Jiejing Kai, Linglin Chen, Meiling Wu, Jingyin Dong, Qingmei Wang, Ling-Hui Zeng
Accumulating data have revealed that abnormal activity of the mTOR (mammalian target of rapamycin) pathway plays an important role in epileptogenesis triggered by various factors. We previously reported that pretreatment with perifosine, an inhibitor of Akt (also called protein kinase B), abolishes the rapamycin-induced paradoxical increase of S6 phosphorylation in a rat model induced by kainic acid (KA). Since Akt is an upstream target in the mTOR signaling pathway, we set out to determine whether perifosine has a preventive effect on epileptogenesis...
August 7, 2017: Neuroscience Bulletin
https://www.readbyqxmd.com/read/28780644/immunopotentiator-thymosin-alpha-1-promotes-neurogenesis-and-cognition-in-the-developing-mouse-via-a-systemic-th1-bias
#5
Ge Wang, Fen He, Yunlong Xu, Yuwei Zhang, Xiao Wang, Chunhua Zhou, Yihong Huang, Juntao Zou
In early life, the immune system plays an essential role in brain development. In our study, the immunopotentiator thymosin alpha-1 (Ta1) was peripherally administered to neonatal mice to explore whether the peripheral immunopotentiator affects neurodevelopment and cognition, and to further investigate the relevant mechanism. Compared with the control group, the Ta1 mice displayed better cognitive abilities in early life. The numbers of 5-bromodeoxyuridine (BrdU)+, nestin+, T-box transcription factor 2 (Tbr2)+, BrdU+/doublecortin (DCX)+, BrdU+/ionized calcium-binding adaptor molecule 1 (Iba1)+, and BrdU+/neuronal nuclei (NeuN)+ cells in the hippocampus were increased in the Ta1 group, accompanied by increased interleukin-4 (IL-4), interferon-gamma, brain-derived neurotrophic factor, nerve growth factor, and insulin-like growth factor-1 as well as decreased IL-6 and tumor necrosis factor-α...
August 5, 2017: Neuroscience Bulletin
https://www.readbyqxmd.com/read/28780643/memoir-a-novel-system-for-neural-lineage-tracing
#6
Zhifu Wang, Jianhong Zhu
No abstract text is available yet for this article.
August 5, 2017: Neuroscience Bulletin
https://www.readbyqxmd.com/read/28780642/clock-rs1801260-polymorphism-is-associated-with-susceptibility-to-parkinson-s-disease-in-a-chinese-population
#7
LETTER
Fan Lou, Ming Li, Yan Ren, Xiao-Guang Luo, Na Liu, Xiaohong Li
No abstract text is available yet for this article.
August 5, 2017: Neuroscience Bulletin
https://www.readbyqxmd.com/read/28776303/premotor-diagnosis-of-parkinson-s-disease
#8
REVIEW
Heinz Reichmann
Typical Parkinsonian symptoms consist of bradykinesia plus rigidity and/or resting tremor. Some time later postural instability occurs. Pre-motor symptoms such as hyposmia, constipation, REM sleep behavior disorder and depression may antecede these motor symptoms for years. It would be ideal, if we had a biomarker which would allow to predict who with one or two of these pre-motor symptoms will develop the movement disorder Parkinson's disease (PD). Thus, it is interesting to learn that biopsies of the submandibular gland or colon biopsies may be a means to predict PD, if there is a high amout of abnormally folded alpha-synuclein and phosphorylated alpha-synuclein...
August 3, 2017: Neuroscience Bulletin
https://www.readbyqxmd.com/read/28770440/clinical-significance-of-rem-sleep-behavior-disorders-and-other-non-motor-symptoms-of-parkinsonism
#9
REVIEW
Hong Jin, Jin-Ru Zhang, Yun Shen, Chun-Feng Liu
Rapid eye movement sleep behavior disorder (RBD) is one of the most common non-motor symptoms of parkinsonism, and it may serve as a prodromal marker of neurodegenerative disease. The mechanism underlying RBD is unclear. Several prospective studies have reported that specific non-motor symptoms predict a conversion risk of developing a neurodegenerative disease, including olfactory dysfunction, abnormal color vision, autonomic dysfunction, excessive daytime sleepiness, depression, and cognitive impairment. Parkinson's disease (PD) with RBD exhibits clinical heterogeneity with respect to motor and non-motor symptoms compared with PD without RBD...
August 3, 2017: Neuroscience Bulletin
https://www.readbyqxmd.com/read/28770439/crocetin-potentiates-neurite-growth-in-hippocampal-neurons-and-facilitates-functional-recovery-in-rats-with-spinal-cord-injury
#10
Xiqian Wang, Xiejia Jiao, Zhonghao Liu, Yixin Li
Crocetin is an ingredient of traditional Chinese medicine and has therapeutic potential in various diseases due to its pharmacological properties, such as neuroprotection, anti-oxidative stress, and anti-inflammation. These properties might benefit the treatment of spinal cord injury. In the present study, we tested the effect of crocetin on neurite growth and sensorimotor dysfunction in a rat model of spinal cord injury. We evaluated the viability of cultured hippocampal neurons with tetrazolium dye and lactate dehydrogenase assays, visualized neurites and axons with antibody staining, and monitored motor and sensorimotor functions in rats with spinal cord injury using the Basso, Beattie, and Bresnahan assay and the contact plantar placement test, respectively, and measured cytokine expression using enzyme-linked immuno-absorbent assays...
August 2, 2017: Neuroscience Bulletin
https://www.readbyqxmd.com/read/28762215/tiny-but-mighty-promising-roles-of-micrornas-in-the-diagnosis-and-treatment-of-parkinson-s-disease
#11
REVIEW
Ying Wang, Zhaofei Yang, Weidong Le
Parkinson's disease (PD) is the second most common age-related neurodegenerative disorder after Alzheimer's disease. To date, the clinical diagnosis of PD is primarily based on the late onset of motor impairments. Unfortunately, at this stage, most of the dopaminergic neurons may have already been lost, leading to the limited clinical benefits of current therapeutics. Therefore, early identification of PD, especially at the prodromal stage, is still a main challenge in the diagnosis and management of this disease...
July 31, 2017: Neuroscience Bulletin
https://www.readbyqxmd.com/read/28762214/economic-activity-silent-synaptic-mechanisms-of-working-memory
#12
Xiao Lin, Ying Han, Peng Li, Le Shi, Lin Lu
No abstract text is available yet for this article.
July 31, 2017: Neuroscience Bulletin
https://www.readbyqxmd.com/read/28717866/mir-30a-positively-regulates-the-inflammatory-response-of-microglia-in-experimental-autoimmune-encephalomyelitis
#13
Xue Fang, Dingya Sun, Zhihong Wang, Zhongwang Yu, Weili Liu, Yingyan Pu, Dan Wang, Aijun Huang, Mingdong Liu, Zhenghua Xiang, Cheng He, Li Cao
Multiple sclerosis (MS) is a classical inflammatory demyelinating disease of the central nervous system (CNS). Microglia are the main resident immune cells in the CNS and are closely associated with the pathogenesis of MS. In the present study, we found that miR-30a was highly expressed in jellyfish-like microglia in chronic active lesions of MS patients, as well as in the microglia of mice with experimental autoimmune encephalomyelitis (EAE) at the chronic phase. In vitro, the conditioned supernatant of mouse microglia overexpressing miR-30a promoted the apoptosis of oligodendrocyte precursor cells (OPCs), and inhibited OPC differentiation...
July 17, 2017: Neuroscience Bulletin
https://www.readbyqxmd.com/read/28699024/transcriptome-sequencing-reveals-astrocytes-as-a-therapeutic-target-in-heat-stroke
#14
Bing Niu, Tao Zhang, Huaiqiang Hu, Bingzhen Cao
Heat-stroke is a serious form of hyperthermia with high mortality, and can induce severe central nervous system disorders. The neurovascular unit (NVU), which consists of vascular cells, glial cells, and neurons, controls blood-brain barrier (BBB) permeability and cerebral blood flow, and maintains the proper functioning of neuronal circuits. However, the detailed function of each BBB component in heat-stroke remains unknown. In order to interpret alterations caused by heat stress, we performed transcriptome comparison of neuron and astrocyte primary cultures after heat treatment...
July 11, 2017: Neuroscience Bulletin
https://www.readbyqxmd.com/read/28695417/a-fiber-tractography-study-of-social-emotional-related-fiber-tracts-in-children-and-adolescents-with-autism-spectrum-disorder
#15
Yun Li, Hui Fang, Wenming Zheng, Lu Qian, Yunhua Xiao, Qiaorong Wu, Chen Chang, Chaoyong Xiao, Kangkang Chu, Xiaoyan Ke
The symptoms of autism spectrum disorder (ASD) have been hypothesized to be caused by changes in brain connectivity. From the clinical perspective, the "disconnectivity" hypothesis has been used to explain characteristic impairments in "socio-emotional" function. Therefore, in this study we compared the facial emotional recognition (FER) feature and the integrity of social-emotional-related white-matter tracts between children and adolescents with high-functioning ASD (HFA) and their typically developing (TD) counterparts...
July 10, 2017: Neuroscience Bulletin
https://www.readbyqxmd.com/read/28667479/combining-human-and-rodent-genetics-to-identify-new-analgesics
#16
REVIEW
Alban Latremoliere, Michael Costigan
Most attempts at rational development of new analgesics have failed, in part because chronic pain involves multiple processes that remain poorly understood. To improve translational success, one strategy is to select novel targets for which there is proof of clinical relevance, either genetically through heritable traits, or pharmacologically. Such an approach by definition yields targets with high clinical validity. The biology of these targets can be elucidated in animal models before returning to the patients with a refined therapeutic...
July 1, 2017: Neuroscience Bulletin
https://www.readbyqxmd.com/read/28646349/modeling-pain-using-fmri-from-regions-to-biomarkers
#17
REVIEW
Marianne C Reddan, Tor D Wager
Pain is a subjective and complex phenomenon. Its complexity is related to its heterogeneity: multiple component processes, including sensation, affect, and cognition, contribute to pain experience and reporting. These components are likely to be encoded in distributed brain networks that interact to create pain experience and pain-related decision-making. Therefore, to understand pain, we must identify these networks and build models of these interactions that yield testable predictions about pain-related outcomes...
June 23, 2017: Neuroscience Bulletin
https://www.readbyqxmd.com/read/28646348/tau-induced-ca-2-calmodulin-dependent-protein-kinase-iv-activation-aggravates-nuclear-tau-hyperphosphorylation
#18
Yu-Ping Wei, Jin-Wang Ye, Xiong Wang, Li-Ping Zhu, Qing-Hua Hu, Qun Wang, Dan Ke, Qing Tian, Jian-Zhi Wang
Hyperphosphorylated tau is the major protein component of neurofibrillary tangles in the brains of patients with Alzheimer's disease (AD). However, the mechanism underlying tau hyperphosphorylation is not fully understood. Here, we demonstrated that exogenously expressed wild-type human tau40 was detectable in the phosphorylated form at multiple AD-associated sites in cytoplasmic and nuclear fractions from HEK293 cells. Among these sites, tau phosphorylated at Thr205 and Ser214 was almost exclusively found in the nuclear fraction at the conditions used in the present study...
June 23, 2017: Neuroscience Bulletin
https://www.readbyqxmd.com/read/28612319/involvement-of-nf-%C3%AE%C2%BAb-and-the-cx3cr1-signaling-network-in-mechanical-allodynia-induced-by-tetanic-sciatic-stimulation
#19
Zhe-Chen Wang, Li-Hong Li, Chao Bian, Liu Yang, Ning Lv, Yu-Qiu Zhang
Tetanic stimulation of the sciatic nerve (TSS) triggers long-term potentiation in the dorsal horn of the spinal cord and long-lasting pain hypersensitivity. CX3CL1-CX3CR1 signaling is an important pathway in neuronal-microglial activation. Nuclear factor κB (NF-κB) is a key signal transduction molecule that regulates neuroinflammation and neuropathic pain. Here, we set out to determine whether and how NF-κB and CX3CR1 are involved in the mechanism underlying the pathological changes induced by TSS. After unilateral TSS, significant bilateral mechanical allodynia was induced, as assessed by the von Frey test...
June 13, 2017: Neuroscience Bulletin
https://www.readbyqxmd.com/read/28612318/somatosensory-neuron-typing-with-high-coverage-single-cell-rna-sequencing-and-functional-analysis
#20
REVIEW
Changlin Li, Sashuang Wang, Yan Chen, Xu Zhang
Different physical and chemical stimuli are detected by the peripheral sensory receptors of dorsal root ganglion (DRG) neurons, and the generated inputs are transmitted via afferent fibers into the central nervous system. The gene expression profiles of DRG neurons contribute to the generation, transmission, and regulation of various somatosensory signals. Recently, the single-cell transcriptomes, cell types, and functional annotations of somatosensory neurons have been studied. In this review, we introduce our classification of DRG neurons based on single-cell RNA-sequencing and functional analyses, and discuss the technical approaches...
June 13, 2017: Neuroscience Bulletin
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