Neuroscience Research Communications最新文献

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Neural correlates of visual perceptual learning in humans indexed by event‐related potentials 由事件相关电位索引的人类视觉知觉学习的神经关联
Neuroscience Research Communications Pub Date : 2003-01-01 DOI: 10.1002/NRC.10053
Yulong Ding, Yan Song, S. Fan, Lin Chen
{"title":"Neural correlates of visual perceptual learning in humans indexed by event‐related potentials","authors":"Yulong Ding, Yan Song, S. Fan, Lin Chen","doi":"10.1002/NRC.10053","DOIUrl":"https://doi.org/10.1002/NRC.10053","url":null,"abstract":"The current work investigated the neural correlates of visual perceptual learning by recording event-related potentials (ERPs) from human adults. Subjects were trained with a discrimination task of arrow orientation in three consecutive training sessions within 2 hours. While reaction times (RTs) were shortened gradually across training sessions, the amplitudes of negativities between 125–155 ms (N1) and between 290–340 ms (N2) decreased mainly over the central and parietal areas respectively. However, a broadly distributed P3 component increased along with more practice. In addition, the decrease in N1 and increase in P3 preceded the decrease in N2. The implications of these results to the neural mechanisms subserving perceptual learning are discussed.","PeriodicalId":19198,"journal":{"name":"Neuroscience Research Communications","volume":"225 1","pages":"1-9"},"PeriodicalIF":0.0,"publicationDate":"2003-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91479519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Homeobox gene repertoire in adult rat dorsal root ganglia 成年大鼠背根神经节同源盒基因库
Neuroscience Research Communications Pub Date : 2003-01-01 DOI: 10.1002/NRC.10058
C. Vogelaar, S. Smits, J. Brakkee, W. Gispen, M. Smidt, L. Schrama, M. Hoekman, J. Burbach
{"title":"Homeobox gene repertoire in adult rat dorsal root ganglia","authors":"C. Vogelaar, S. Smits, J. Brakkee, W. Gispen, M. Smidt, L. Schrama, M. Hoekman, J. Burbach","doi":"10.1002/NRC.10058","DOIUrl":"https://doi.org/10.1002/NRC.10058","url":null,"abstract":"Homeobox genes encode transcription factors that play key roles in embryonic development of the nervous system. Dorsal root ganglia are part of the peripheral nervous system that arises from the neural crest. Several homeobox genes are known to play important roles in the development of neural crest and dorsal root ganglia. Some of these remain expressed in the adult dorsal root ganglia (DRG). In order to get more insight into the homeobox gene repertoire in adult rat DRG, we performed RT-PCR with degenerate primers and identified twenty-two homeobox genes. We found homeobox genes that were reported before in embryonic or adult DRG, as well as homeobox genes associated before with neural crest (derivatives). Some of the genes were not reported in relation to neural crest or DRG before. Two homeobox genes displayed sequence differences with their mouse counterparts, possibly being close homologues. The diversity of homeobox genes expressed in adult DRG suggests that gene regulatory events initiated during development remain operative in the mature DRG.","PeriodicalId":19198,"journal":{"name":"Neuroscience Research Communications","volume":"156 1","pages":"49-59"},"PeriodicalIF":0.0,"publicationDate":"2003-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82909875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Efffects of vigabatrin on spontaneous locomotor activity of rats 维加巴特林对大鼠自发性运动活动的影响
Neuroscience Research Communications Pub Date : 2003-01-01 DOI: 10.1002/NRC.10060
B. M. Bouwman, C. Rijn, E. W. Bree, A. Coenen
{"title":"Efffects of vigabatrin on spontaneous locomotor activity of rats","authors":"B. M. Bouwman, C. Rijn, E. W. Bree, A. Coenen","doi":"10.1002/NRC.10060","DOIUrl":"https://doi.org/10.1002/NRC.10060","url":null,"abstract":"Effects of vigibatrin (saline, 125, 250, or 500 mg/kg i.p.) on spontaneous locomotor activity in Wistar rats were investigated. There was a dose dependent decrease in amount of locomotion for doses up to 250 mg/kg. This decrease was measurable 2-4 hours after injection and still became more pronounced in the following hours. The mean velocity during the movements 2-6 hours after injection remained intact and was higher in the 500 mg/kg group. In this high dose group an abnormal posture with a hunched back and pilo-erection was observed. The decrease of the amount of motor activity with the preservation of the mean velocity in this non-stimulating procedure, suggests that the level in which the experimental procedure imposes motor activity might be an important factor when measuring effects of vigabatrin. Postscript: Immediate post injection effects were observed, equivalent to those seen in the writhing test, a pain test using hyperosmolar saline injections. These observations stress the importance of controlling the osmolarity of the injection fluids.","PeriodicalId":19198,"journal":{"name":"Neuroscience Research Communications","volume":"84 1","pages":"71-76"},"PeriodicalIF":0.0,"publicationDate":"2003-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90586871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Intact spatial discrimination performance but impaired reaction time performance after frontal cortex lesions in the rat 额叶皮质损伤后大鼠空间辨别能力完好,但反应时间表现受损
Neuroscience Research Communications Pub Date : 2003-01-01 DOI: 10.1002/NRC.10076
A. Blokland, L. Broersen, H. Uylings, J. Jolles
{"title":"Intact spatial discrimination performance but impaired reaction time performance after frontal cortex lesions in the rat","authors":"A. Blokland, L. Broersen, H. Uylings, J. Jolles","doi":"10.1002/NRC.10076","DOIUrl":"https://doi.org/10.1002/NRC.10076","url":null,"abstract":"In the present study the consequences of frontal cortex (FC) lesions on spatial discrimination learning and reaction time performance were assessed in rats. Spatial working- and reference memory were tested simutalneously in a cone field task. It was found that FC lesions did not impair both aspects of spatial discrimination performance in this task. In a choice reaction time task the FC lesion decreased the response speed (reaction time and motor time). Detailed analysis of the reaction times indicated that these effects could be attributed to an impaired motor preparation and/or an attention deficit. The present study suggests that claims of deficit in learning and memory following FC lesions should take into account possible effects of motor preparation/execution and attention.","PeriodicalId":19198,"journal":{"name":"Neuroscience Research Communications","volume":"86 1","pages":"1-16"},"PeriodicalIF":0.0,"publicationDate":"2003-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89803360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Levation of serum macrophage colony stimulating factor level in patients with Alzheimer's disease 阿尔茨海默病患者血清巨噬细胞集落刺激因子水平的升高
Neuroscience Research Communications Pub Date : 2003-01-01 DOI: 10.1002/NRC.10059
Jianmin Zhang, Qingli Kong, Zhenxin Zhang, Pingjiang Ge, D. Ba, Wei He
{"title":"Levation of serum macrophage colony stimulating factor level in patients with Alzheimer's disease","authors":"Jianmin Zhang, Qingli Kong, Zhenxin Zhang, Pingjiang Ge, D. Ba, Wei He","doi":"10.1002/NRC.10059","DOIUrl":"https://doi.org/10.1002/NRC.10059","url":null,"abstract":"There was impairment of immune function in patients with Alzheimer's disease (AD), and the perturbation of immune system was involved in the pathogenesis of AD. To investigate the mechanism of the impairment of immune function in AD patients, we analyzed the levels of serum IL-1β, IL-6, TNF-α, and M-CSF in AD patients. The results demonstrated that levels of serum M-CSF were significantly increased in AD patients compared with healthy controls (P<0.01), and they were significantly correlated with the degree of dementia (CDR and MMSE) in AD patients. Our findings indicated that M-CSF might play an important role in the development of neuropathology of patients with AD, and it might serve as an indicator for monitoring the perturbation of immune function in patients with AD.","PeriodicalId":19198,"journal":{"name":"Neuroscience Research Communications","volume":"34 1","pages":"61-69"},"PeriodicalIF":0.0,"publicationDate":"2003-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86610918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dose-dependence of the effect of nicotine on c-Fos expression in the hippocampus of young rats 尼古丁对幼龄大鼠海马c-Fos表达影响的剂量依赖性
Neuroscience Research Communications Pub Date : 2003-01-01 DOI: 10.1002/NRC.10054
M. Jang, M. Shin, Hong Kim, Hong Kim, Ee-Hwa Kim, Chang-Ju Kim
{"title":"Dose-dependence of the effect of nicotine on c-Fos expression in the hippocampus of young rats","authors":"M. Jang, M. Shin, Hong Kim, Hong Kim, Ee-Hwa Kim, Chang-Ju Kim","doi":"10.1002/NRC.10054","DOIUrl":"https://doi.org/10.1002/NRC.10054","url":null,"abstract":"It is generally accepted that nicotine affect learning ability and memory functions, especially during adolescence. c-Fos is an immediate early gene whose expression is sometimes used as a marker for stimulation-induced changes in the metabolic activity of neurons. The expression of c-Fos is induced by a variety of stimuli and expression of c-fos mRNA in hippocampal regions is used as a marker for neuronal activity. In the present study, the effect of dose-dependence of the nicotine on the c-Fos expression in the hippocampus of young rats was investigated via immunohistochemistry. From the present results, the number of Fos-positive cells in each region of the hippocampus was decreased following treatment with nicotine as dose-dependently. In addition, it appears that nicotine at low doses does not affect the level of apoptosis in the dentate gyrus of the hippocampus; in contrast, nicotine at high doses seems to enhance apoptosis in the dentate gyrus. Based on the results, it can be suggested that nicotine-induced suppression on Fos expression in the hippocampus of young rats may be an underlying mechanism of nicotine-induced disruption of information processing during the adolescence.","PeriodicalId":19198,"journal":{"name":"Neuroscience Research Communications","volume":"1 1","pages":"11-19"},"PeriodicalIF":0.0,"publicationDate":"2003-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83266698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Numerical density of pyramidal neurons in the hippocampus of 4 and 20 week old male and female rats 4、20周龄雌雄大鼠海马锥体神经元的数值密度
Neuroscience Research Communications Pub Date : 2003-01-01 DOI: 10.1002/NRC.10057
S. Kaplan, M. Rağbetli, S. Canan, B. Sahin, C. Marangoz
{"title":"Numerical density of pyramidal neurons in the hippocampus of 4 and 20 week old male and female rats","authors":"S. Kaplan, M. Rağbetli, S. Canan, B. Sahin, C. Marangoz","doi":"10.1002/NRC.10057","DOIUrl":"https://doi.org/10.1002/NRC.10057","url":null,"abstract":"A study designed to investigate how the cellular laterality in rosto-caudal direction changes due to age and sex was presented. It is a well-known fact that asymmetry is an important issue in understanding brain functions. Frontal sections of 5 µm thickness with 200 µm intervals were taken from both dorsal hippocampi of 4- and 20-week-old male and female rats. Sections were stained with hematoxylin-eosin and the levels of sections were determined according to a stereotaxic atlas. In each level, numerical density of pyramidal cells of the right and left area CA1, CA3 and CA4 of dorsal hippocampi were estimated by means of counting pyramidal cells under 10 × 40 magnification. Numerical cell density obtained from the right and left dorsal hippocampi of male and female rats were compared. Results are as follows: 1) Numerical cell density in the left and right dorsal hippocampi of 20-week female rats was not high than 4-week female dorsal hippocampi (p>0.05). 2) Difference between 4-week old female and male dorsal hippocampi of right and left CA1, CA3 and CA4 areas were not raised a significant level (p>0.05). Differences between 20-week-old group of male and female rats with the exception of female CA4 area were not also significant. 3) Right and left dorsal hippocampi CA4 areas of the 20-week-old group showed a higher numerical density than the same area of the 4-week-old group (p<0.007). This difference may show a postnatal neurogenesis in area CA4. The results, which are summarized above, may be helpful in understanding the mechanisms of human brains.","PeriodicalId":19198,"journal":{"name":"Neuroscience Research Communications","volume":"275 1","pages":"37-48"},"PeriodicalIF":0.0,"publicationDate":"2003-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73289495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Florid prion protein (PrP) plaques in patients with variant Creutzfeldt-Jakob disease (vCJD) are spatially related to blood vessels 变异克雅氏病(vCJD)患者的荧光朊蛋白(PrP)斑块与血管有空间关系
Neuroscience Research Communications Pub Date : 2003-01-01 DOI: 10.1002/NRC.10056
R. Armstrong, N. Cairns, J. Ironside, P. Lantos
{"title":"Florid prion protein (PrP) plaques in patients with variant Creutzfeldt-Jakob disease (vCJD) are spatially related to blood vessels","authors":"R. Armstrong, N. Cairns, J. Ironside, P. Lantos","doi":"10.1002/NRC.10056","DOIUrl":"https://doi.org/10.1002/NRC.10056","url":null,"abstract":"This study tested the hypothesis that variations in the density of the florid prion protein (PrP) plaques in the brain of patients with variant Creutzfeldt-Jakob disease (vCJD) were spatially related to blood vessels. In 81% of areas of the cerebral cortex sampled and in 37% of the remaining areas, which included the hippocampus, dentate gyrus, and cerebellum, there was a positive spatial correlation between the density of the florid plaques and the larger blood vessel profiles. The frequency of the positive spatial correlations was similar in different anatomical areas of the cerebral cortex and in the upper compared with the lower cortical laminae. The data support the hypothesis that the florid plaques cluster around the larger blood vessels in vCJD, the density of associated plaques increasing with vessel size. The development of florid plaques close to blood vessels may be due to factors associated with the blood vessels that enhance the aggregation of PrP to form the dense cores of florid plaques and is unlikely to reflect the haematogenous spread of PrP into the brain.","PeriodicalId":19198,"journal":{"name":"Neuroscience Research Communications","volume":"195 1","pages":"29-36"},"PeriodicalIF":0.0,"publicationDate":"2003-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86828523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Comparison between 2‐day and 10‐day MPTP treatment modalities in the mouse model of Parkinson's disease 帕金森病小鼠模型2天和10天MPTP治疗方式的比较
Neuroscience Research Communications Pub Date : 2003-01-01 DOI: 10.1002/NRC.10055
Ki-Sok Kim, C. Kim, Youngbuhm Huh, B. Ahn, B. Han, K. Choi
{"title":"Comparison between 2‐day and 10‐day MPTP treatment modalities in the mouse model of Parkinson's disease","authors":"Ki-Sok Kim, C. Kim, Youngbuhm Huh, B. Ahn, B. Han, K. Choi","doi":"10.1002/NRC.10055","DOIUrl":"https://doi.org/10.1002/NRC.10055","url":null,"abstract":"We employed a novel regimen of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) treatment to produce a Parkinson's disease (PD) animal model demonstrating typical Parkinsonian symptoms. In order to compare the effects of the different durations of MPTP treatment (daily intraperitoneal injections of 30 mg/kg MPTP for 2 or 10 days), the numbers and distribution patterns of tyrosine hydroxylase-immunoreactive (TH-ir) neurons and fibers were examined in the substantia nigral and stiatal brain regions of C57/B16 mice. The mean numbers of TH-ir neurons in the substantia nigra were significantly lower (57.3% and 48.1%) than the numbers in the saline-treated controls after 2 and 10 days of MPTP treatment, respectively. Furthermore, the optical density of the TH-ir fibers in the striatum was reduced by 9.8% and 14.1% after 2- and 10-day treatments, respectively. However, the reduction in numbers of TH-ir neurons in the substantia nigra and striatum was not significantly different between the 2-day and 10-day treatment groups. Yet, it seems that only the 10-day treatment regimen exceeded the threshold of motor deficits. Thus, chronic MPTP treatment appears to be required to mirror the pathophysiological characteristics of Parkinsonism.","PeriodicalId":19198,"journal":{"name":"Neuroscience Research Communications","volume":"25 1","pages":"21-28"},"PeriodicalIF":0.0,"publicationDate":"2003-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87150113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Effects of acute amitriptyline administration on memory, anxiety and activity in male and female mice 急性阿米替林给药对雌雄小鼠记忆、焦虑和活动的影响
Neuroscience Research Communications Pub Date : 2002-11-01 DOI: 10.1002/NRC.10046
A. Parra, E. Everss, S. Monleón, C. Vinader-Caerols, M. Arenas
{"title":"Effects of acute amitriptyline administration on memory, anxiety and activity in male and female mice","authors":"A. Parra, E. Everss, S. Monleón, C. Vinader-Caerols, M. Arenas","doi":"10.1002/NRC.10046","DOIUrl":"https://doi.org/10.1002/NRC.10046","url":null,"abstract":"The effects of acute administration of amitriptyline on memory consolidation in male and female CD1 mice were investigated. Three doses of this tricyclic antidepressant (7.5, 15 and 30 mg/kg) were administered immediately after inhibitory avoidance training. Forty-five minutes after injection, subjects explored the elevated plus-maze for five minutes. Subjects were tested for avoidance twenty-four hours later. Amitriptyline impaired inhibitory avoidance consolidation at doses 7.5, 15 and 30 mg/kg in males, and at doses 7.5 and 30 mg/kg in females. In the elevated plus-maze, amitriptyline had no effect on anxiety (percentage of open arm entries) and induced a dose-dependent impairment of activity (number of closed arm entries). The observed sex differences were limited to subtle stronger effects of amitriptyline in males than in females on inhibitory avoidance. These results indicate that acute amitriptyline administration produces retrograde amnesia on inhibitory avoidance, which does not seem be mediated by anxiolytic effects.","PeriodicalId":19198,"journal":{"name":"Neuroscience Research Communications","volume":"32 1","pages":"135-144"},"PeriodicalIF":0.0,"publicationDate":"2002-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90102412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 20
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