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检索条件"任意字段=中国神经科学学会第九届全国学术会议暨第五届会员代表大会"

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Persistent neuronal firing in SI cortex during instructed delays between haptic stimuli in the absence of working-memory requirement

Persistent neuronal firing in SI cortex during instructed de...

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中国神经科学学会第九届全国学术会议暨第五届会员代表大会

作者： Lei LI Xian-Chun LI Peng GUI Yong-Di ZHOU Li-Ping WANG Key Laboratory of Brain Functional Genomics (Ministry of Education) Institute of Cognitive Neuroscience East China Normal University Shanghai 200062 China

Previous studies suggested that SI neurons in well-trained monkeys participated in the haptic-haptic unimodal delayed matching-to-sample (DMS) *** the present study, 585 SI neurons were recorded in monkeys performing a task that was identical to that in the previous studies but without requiring discrimination and active memorization of the sample.A substantial number of those cells significantly changed their firing rate in the delay compared with the baseline, and some of them showed differential delay *** firing changes are similar to those recorded from monkeys engaged in active (working) *** conclude that the delay activity is not necessarily only observed in the situation of working memory as was generally *** delay activity observed in the present study appears to be an intrinsic property of SI neurons, and suggests that there exists a neural network in SI (the primary sensory cortex) for passive tactile *** 400 SI neurons were also recorded in monkeys performing the haptic-haptic DMS task for comparison of delay firing of SI neurons between working and nonworking memory *** similarity observed in those two situations suggests that working memory uses already existing memory apparatus (the passive memory network) by activating it *** data also suggest that, through training (repetitive exposure to the stimulus), SI neurons may increase their involvement in short-term retention of the sample stimulus.

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SHP-2 promotes the maturation of oligodendrocyte precursor cells through Akt and ERK1/2 signaling in vitro

SHP-2 promotes the maturation of oligodendrocyte precursor c...

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中国神经科学学会第九届全国学术会议暨第五届会员代表大会

作者： Xiu-Jie LIU Yuan-Yuan LI Yong ZHANG Yan LU Wei GUO Peng LIU Jia-Zhen ZHOU Zheng-Hua XIANG Cheng HE Institute of Neuroscience and Key Laboratory of Molecular Neurobiology of Ministry of Education Second Military Medical University Shanghai 200433 China

Objective Oligodendrocyte precursor cells (OPCs) differentiate into oligodendrocytes (OLs), which are responsible for ***, the molecular mechanisms of maturation and myelination by oligodendrocytes remain *** present study is aim to explore the roles of SHP-2 in oligodendrocytes *** In this study, we first searched the potential tyrosine phosphatases involved in oligodendrocytes maturation using OPCs as the ***, we characterized SHP-2 expression during the development of oligodendrocytes by RTPCR, immunostaining and Western *** roles of SHP-2 in olidendrocytes maturation were detected by gene manipulations ***, the mechanism was examined by detecting activities of concerned *** (1) We found that SHP-2 was persistently expressed during developmental process of oligodendrocytes.(2) SHP-2 knock down attenuated oligodendrocytes maturation and this effect was triiodo-L-thyronine (T3) ***-expression of SHP-2 promoted maturation in primary cultured oligodendrocytes.(3) It has been identified that SHP-2 may regulate oligodendrocytes maturation through Akt and Erk1/2 *** SHP-2 promotes oligodendrocytes maturation via Akt and ERK1/2 signaling in vitro.

关键词： SHP-2 oligodendrocyte precursor ceils maturation Akt ERK1/2

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Beta-asarone inhibits synaptic inputs to airway preganglionic parasympathetic motoneurons

Beta-asarone inhibits synaptic inputs to airway preganglioni...

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中国神经科学学会第九届全国学术会议暨第五届会员代表大会

作者： Dong-Ying QIU Li-Li HOU Yong-Hua CHEN Xu-Jiao ZHOU Lei ZHU Ji-Jiang WANG The State Key Laboratory of Medical Neurobiology and Institute of Brain Sciences Fudan University Shanghai Medical College.138 Yi-Xue-Yuan Road Shanghai 200032 China Fudan University Zhongshan Hospital 180 Fenglin Road Shanghai 200032 China The State Key Laboratory of Medical Neurobiology and Institute of Brain Sciences Fudan University Shanghai Medical College.138 Yi-Xue-Yuan Road Shanghai 200032 China Fudan University Zhongshan Hospital 180 Fenglin Road Shanghai 200032 China

Therapeutic application of Asarum, a herbal medicine that has been used for centuries, reportedly causes acute respiratory *** responsible constituents, the sites of action, and the mechanisms involved in this side effect are *** investigated the effects of β-asarone, a volatile constituent of Asarum, on neurotransmission in the medullary respiratory neuronal network using extracellular recording of the rhythmic hypoglossal activity and voltage clamp recordings of the postsynaptic activity of the airway preganglionic parasympathetic motoneurons (APPMs) in vitro.β-asarone caused progressive decreases in the duration and area of the hypoglossal bursts in a concentration-dependent *** frequency and amplitude of the bursts were initially unaltered or temporarily increased, but were then inhibited progressively after prolonged *** with the inhibition of the hypoglossal bursts, the tonic and the phasic excitatory and inhibitory postsynaptic currents in the APPMs were *** data suggest that the Asarum-caused acute respiratory disturbance involves β-asarone-induced inhibition of neurotransmission in the medullary respiratory neuronal network.

关键词： respiration Asarum neurotransmission

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Glial gap-junction communication is involved in hippocampal damage and cognitive deficits following middle cerebral artery occlusion

Glial gap-junction communication is involved in hippocampal ...

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中国神经科学学会第九届全国学术会议暨第五届会员代表大会

作者： Minjie XIE Chenju YI Xiang LUO Shabei XU Zhiyuan YU Bitao BU Wei WANG Department of Neurology Tongji Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China

Stroke induced by middle cerebral artery occlusion (MCAO) is a common cause of adult disability leading to motor-sensory disturbances and cognitive *** is generally accepted that cognitive impairment in stroke patients caused by MCAO results from damage to the cerebral cortex rather than the hippocampus, because the middle cerebral artery does not supply blood to the *** we provide the first evidence that patients with exclusively unilateral MCAO show hippocampal damage characterized by an infarct size-independent atrophy and alterations in neuronal and glial metabolites in the ipsilateral hippocampus as assessed by MRI, in parallel with a significant decline in cognitive *** MCAO also induces delayed shrinkage and pyramidal neuronal death in the ipsilateral hippocampus and an impairment of hippocampal-dependent spatial *** glutamate and pyramidal neuronal intracellular calcium levels were significantly elevated and spreading depression waves were observed in the hippocampus which correlated with neuronal *** gap junctional communication (GJC) with carbenoxolone or down-regulation Cx43 significantly increased the survival of the pyramidal neurons in the ipsilateral hippocampus and improved behavioral ***, Cx43 heterozygous mice showed reduced shrinkage and metabolites abnormality in ipsilateral hippocampus after *** results suggest a significant role of astroglial GJC in MCAO-induced remote hippocampal damage and cognitive impairment.

关键词： astrocyte gap junctional communication hippocampus ischemia

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Functional roles of Mst3 in radial migration during the development of mouse cerebral cortex

Functional roles of Mst3 in radial migration during the deve...

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中国神经科学学会第九届全国学术会议暨第五届会员代表大会

作者： Jing TANG Jacque P KIP Lei SHI Amy KYFU Nancy Y IP Division of Life Science State Key Laboratory of Molecular Neuroscience and Molecular Neuroscience Center The Hong Kong University of Science and Technology Clear Water Bay Hong Kong China

Objective Radial migration is critical for the lamination of cerebral cortex during early brain *** the migration of neurons requires a precise regulation of the organization and dynamics of cytoskeleton including microtubule and actin network, the underlying signaling mechanisms are not well *** the present study, we investigate the functional roles of a kinase Mst3 in radial migration during cortical *** The radial migration in mouse neocortex was investigated by in utero *** cone collapse assay in cultured hippocampal neurons was performed using confocal *** (1) We identified that Mst3, a serine/threonine kinase highly expressed in the developing mouse brain, regulates the neuronal differentiation.(2) Silencing of Mst3 by in utero electroporation resulted in a significant delay on the neuronal migration in the developing mouse neocortex.(2) Kinase activity of Mst3 was essential for its functions in neuronal morphogenesis and migration.(3) Mst3 was co-localized with F-actin at the growth cones of cultured hippocampal neurons, and regulated actin *** Kinase activity of Mst3 is important for neuronal morphogenesis and radial migration through modulation of actin dynamics.

关键词： mammalian Sterile 20-like kinase 3 Mst3 neuronal migration actin dynamics

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Neural correlates underlying incubation effects in divergent creative thinking:An EEG alpha oscillation study

Neural correlates underlying incubation effects in divergent...

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中国神经科学学会第九届全国学术会议暨第五届会员代表大会

作者： Ning HAO Jing XUE Mark Bodner Yong-Di ZHOU Yixuan KU Institute of Cognitive Neuroscience School of Psychology and Cognitive Science East China Normal University Shanghai China MTND Research Institute Santa Ana CA USA Department of Neurosurgery Johns Hopkins University Baltimore MD USA

The phenomenon that new better solutions pop into one's mind after putting an unsolved problem aside for a period of time is called the incubation *** the present study, we tried to investigate neural correlates underlying this effect in divergent creative *** performed Alternative Uses Tasks (AUTs) under the control condition (continuous task performance) and the incubation condition (an incubation period, interpolated task, added) respectively while EEG signals were *** results showed that after an incubation period the subjects provided more creative ideas, and the upper alpha (10-12 Hz) oscillations in the control condition increased at left frontal-central and right parietal-occipital recording sites but such increase was not observed in the incubation *** event related synchronization (ERS) has recently been hypothesized to be a sign of active cognitive processes, reflecting a positive functional correlate of top-down control in relevant neuronal ***, the incubation effect seems to restrain the growth of top-down control and keep the brain sensitive to competing and irrelevant information, which results in more unique ideas in AUT performance.

关键词： Incubation effect divergent creative thinking alternative uses task EEG alpha oscillation

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Potassium channel of oligodendrocyte precursor cells during perinatal hypoxia-ischemia

Potassium channel of oligodendrocyte precursor cells during ...

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中国神经科学学会第九届全国学术会议暨第五届会员代表大会

作者： Peng-Hui CHEN Wen-Qin CAI Department of Neurobiology Chongqing Key Laboratory of Neurobiology Third Military Medical University Chongqing 400038 China

Objective Oligodendrocyte precursor cells (OPC) are particularly susceptible to perinatal hypoxia-ischemia resulting in decreased myelination and infant cerebral *** precise mechanism remains *** recordings from these cells have revealed that they possess unique potassium channel properties, which are distinct from the traditional class of glial cell and *** study is to explore whether rectified potassium channel of OPC is involved in hypoxia ischemic brain *** Whole cell voltage dependent ion channels were recorded by patch clamp technology in acute brain slices of postnatal 7 days rats after hypoxia-ischemia 2 *** recorded cell, which was injected intracellular Lucifer yellow, was identified with the marker NG2 by fluorescent *** (1) Sodium to potassium conductance ratio was decreased, owing to the increase of inward sodium current amplitude.(2) Outward rectified potassium channel exhibited rectify fall off.(3) There was no significant difference in variable rectified potassium channel and inward rectified potassium channel.(4) Tail current and activation voltage were all raised, which reduced activation and inactivation of potassium *** Outward rectified potassium channel and tail current of potassium channel play more important role in OPC susceptible to hypoxia ischemia.

关键词： oligodendrocyte precursor cell (OPC) patch clamp hypoxia-ischemia potassium channel rectify

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Glutamate activated spinal astrocytes are involved in the thermal hyperalgesia

Glutamate activated spinal astrocytes are involved in the th...

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中国神经科学学会第九届全国学术会议暨第五届会员代表大会

作者： Rui-Hong SHI Xin ZHAO Ce ZHANG Department of Physiology National Key Disciplines Key Laboratory for Cellular Physiology of Ministry of Education Shanxi Medical University Taiyuan 030001 China

Objective Numerous evidence suggests that spinal astrocytes play an important role in chronic pain through release of neuroactive substances, such as interleukin and *** produces marked effects in initiation and transmission of nociceptive ***, there is a lack of direct evidence that how glutamate activate astrocytes and what's effects of activated astrocytes by glutamate on pain *** study therefore explored the direct effects of glutamate activation of spinal *** Primary culture of spinal astrocytes were administered with *** levels of protein and rnRNA expression of IL-6, which reflect astrocyte activation, were determined by ELISA assay and real-time *** spinal astrocytes activated by glutamate were injected into the lumber enlargement of adult Wistar rats, and paw withdrawal latency (PWL) was *** Administration of glutamate (1 000 μM) activated astrocytes from 6 h after intrathecal injection and reached the maximal level at 24 h (the last time point we explored).Besides, glutamate (1 000 μM) enhanced the release of IL-6 by *** injection of cultured spinal astrocytes, which were stimulated by glutamate, induced a substantial decrease of PWL, indicating the development of thermal *** Our results suggest that activated astrocytes by glutamate is sufficient to produce thermal hyperalgesia in rats by releasing IL-6.

关键词： glutamate spinal astrocyte thermal hyperalgesia IL-6

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HDAC6 regulates aggresome-autophagy degradation pathway of α-synuclein in response to MPP+-induced stress

HDAC6 regulates aggresome-autophagy degradation pathway of ...

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中国神经科学学会第九届全国学术会议暨第五届会员代表大会

作者： Min SU Ji-Jun SHI Ya-Ping YANG Jun LI Yan-Ling ZHANG Jin CHEN Li-Fang HU Chun-Feng LIU Department of Neurology Second Affiliated Hospital of Soochow University Suzhou China Institute of Neuroscience Soochow University Suzhou China Department of Neurology Second Affiliated Hospital of Soochow University Suzhou China Institute of Neuroscience Soochow University Suzhou China

Increasing evidence suggests that the ubiquitin-binding histone deacetylase-6 (HDAC6) plays an important role in the clearance of misfolded proteins by *** this study, we treated PC-12 cells overexpressing human mutant (A53T) α-synuclein (α-syn) and SH-SY5Y cells with MPP+.It was found that HDAC6 expression significantly increased and mainly colocalized with α-syn in the perinuclear region to form aggresome-like ***6 deficiency blocked the formation of aggresome-like bodies and interfered with the autophagy in response to MPP+-induced ***, misfolded α-syn accumulated into the nuclei, resulting in its reduced clearance, and finally, the number of apoptotic cells significantly *** together, HDAC6 participated in the degradation of MPP+-induced misfolded α-syn aggregates by regulating the aggresome-autophagy *** the mechanism may disclose potential therapeutic targets for synucleinopathies such as Parkinson disease.

关键词： HDAC6 α-synuclein aggresome autophagy MPP+ Parkinson disease

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Establishment of a modified high resolution melting assay based on allele-specific-extension to determine single nucleotide polymorphism

Establishment of a modified high resolution melting assay ba...

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中国神经科学学会第九届全国学术会议暨第五届会员代表大会

作者： Yan-Peng YUAN Qing-Ling LIN Xiao-Hong ZUO Yan-Ning CAI Department of Neurobiology Being Institute of Geriatric Xuanwu Hospital Capital Medical University Beijing100053 China

Objective To establish a modified high resolution melting assay based on allele-specific-extension(***) to determine single nucleotide polymorphisms (SNP).Methods The established ASE-HRM was designed as asymmetric polymerase chain reaction and melting curve *** allele-specific-extension (ASE)primer which ends at the SNP site and matches one of the allele was added to the reaction ***, asymmetric PCR Was performed with undergoing additional thermal steps in order to get allele-specific-extension.A total of194 human genomic DNA samples were genotyped with the developed assay and by direct *** Heterozygotes could be discriminated from homozygotes according to their lower and broader melting *** different types ofhomozygote could be separated according to the presence or absence of an extension *** primers 11-13 bases long worked efficiently in an allele specific *** of the limiting amplification primer with locked nucleic acid increased the Tm difference between extension and amplification peaks and facilitated subsequent *** 194 human genomic DNA samples were genotyped with the developed assay and by direct sequencing, with the different methods providing identical genotyping *** ASE-HRM is a simple, inexpensive, closed-tube genotyping method that can be used to examine all types of SNP.

关键词： single nucleotide polymorphism high resolution melting curve analysis allele-specific-extension base-pair neutral variant

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