原创,别转载。 研究发现多巴胺与记忆力密切相关 多巴胺是一种神经递质,脑内多巴胺缺乏,就会出现震颤、僵直、运动迟缓等帕金森氏症症状。日本京都大学等机构的研究人员发现,多巴胺不仅会影响身体活动性,对于记忆力也发挥着重要作用。相关研究论文在线刊登在了近期出版的《神经元》杂志上。 http://www.bio360.net/news/show/6594.html Start A-Literature C-Literature B-list Filter Literature A-query: Dopamine C-query: memory The B-list contains title words and phrases (terms) that appeared in both the A and the C literature. 3358 articles appeared in both literatures and were not included in the process of computing the B-list but can be viewed here . The results of this search are saved under id # 20011 and can be accessed from the start page after you leave this session. There are 2111 terms on the current B-list ( 发现76个相关基因和蛋白质知识概念 are predicted to be relevant ), which is shown ranked according to predicted relevance. The list can be further trimmed down using the filters listed in the left margin. To assess whether there appears to be a biologically significant relationship between the AB and BC literatures for specific B-terms, please select one or more B-terms and then click the button to view the corresponding AB and BC literatures. Use Ctrl to select multiple B-terms. job id # 20011 started Sun Aug 11 21:48:41 2013 Max_citations: 50000 Stoplist: /var/www/arrowsmith_uic/data/stopwords_pubmed Ngram_max: 3 A_query_raw: Dopamine Sun Aug 11 21:48:46 2013 A query = Dopamine started Sun Aug 11 21:48:46 2013 A query resulted in 50000 titles C_query_raw: Dopamine Sun Aug 11 21:48:55 2013 C: Dopamine 131294 A: pubmed_query_A 131294 AC: ( Dopamine ) AND ( Dopamine ) 131294 C_query_raw: memory Sun Aug 11 21:49:11 2013 C: memory 191102 A: pubmed_query_A 131294 C_query_raw: memory Sun Aug 11 21:49:11 2013 AC: ( Dopamine ) AND ( memory ) 3358 C: memory 191102 A: pubmed_query_A 131294 AC: ( Dopamine ) AND ( memory ) 3358 C_query_raw: memory Sun Aug 11 21:49:21 2013 C: memory 191102 A: pubmed_query_A 131294 AC: ( Dopamine ) AND ( memory ) 3358 C query = memory started Sun Aug 11 21:49:21 2013 C query resulted in 50000 titles A AND C query resulted in 3358 titles 47505 B-terms ready on Sun Aug 11 21:51:28 2013 Sem_filter: Genes Molecular Sequences, and Gene Protein Names 2111 B-terms left after filter executed Sun Aug 11 22:02:23 2013 B-list on Sun Aug 11 22:04:12 2013 1 akt 2 gdnf 3 transporter gene 4 5-ht1a 5 erp 6 bdnf 7 th1 8 ptsd 9 microrna 10 adiponectin 11 cox-2 12 a2a 13 opioid receptor 14 toll receptor 15 promoter polymorphism 16 synaptotagmin 17 reelin 18 serotonin transporter gene 19 ca1 20 jnk 21 wnt 22 fmr1 23 cannabinoid receptor 24 stat3 25 nf kappab 26 jak2 27 suppressor cytokine signaling 28 apolipoprotein e 29 mecp2 30 cit 31 vegf 32 mthfr 33 ryanodine receptor 34 creb 35 single nucleotide polymorphism 36 mtor 37 cd8 38 comt 39 ampa 40 fdg 41 abeta 42 erk1 43 gabaa 44 doublecortin 45 cb1 46 hypocretin 47 spatial learning 48 signal regulated kinase 49 ltp 50 orexin a 51 transcription factor 52 beta catenin 53 adhd 54 neurotrophin 55 kv7 56 egr-1 57 caspase-3 58 glutamate receptor 59 ppargamma 60 gp120 61 dtnbp1 62 urocortin 63 c ebp 64 serum response factor 65 cadasil 66 ppar gamma 67 adenosine a1 receptor 68 ghrelin 69 caspase 70 stat5 71 cyclin dependent kinase 72 phosphatidylinositol 3-kinase 73 pi3k 74 cnr1 75 5-ht2a 76 serotonin transporter promoter 知识发现研究论文实例 Start A-Literature C-Literature B-list Filter Literature AB literature B-term BC literature Dopamine th1 memory 1: Acute ethanol treatment upregulates th1, th2, and hdc in larval zebrafish in stable networks. 2013 Add to clipboard 2: Expression of the paralogous tyrosine hydroxylase encoding genes th1 and th2 reveals the full complement of dopamine rgic and noradrenergic neurons in zebrafish larval and juvenile brain. 2010 Add to clipboard 3: Differential effects of Th1, monocyte/macrophage and Th2 cytokine mixtures on early gene expression for molecules associated with metabolism, signaling and regulation in central nervous system mixed glial cell cultures. 2009 Add to clipboard 4: Th1 cytokines are upregulated by adenoviral vectors in the brains of primed mice. 2008 Add to clipboard 1: The Shc family protein adaptor, Rai, acts as a negative regulator of Th17 and Th1 cell development. 2013 Add to clipboard 2: Memory T Cells in Latent Mycobacterium tuberculosis Infection Are Directed against Three Antigenic Islands and Largely Contained in a CXCR3(+)CCR6(+) Th1 Subset. 2013 Add to clipboard 3: Th1/ Th17-Mediated Interstitial Pneumonia in Chronic Colitis Mice Independent of Intestinal Microbiota. 2013 Add to clipboard 4: Antigen experience shapes phenotype and function of memory Th1 cells. 2013 Add to clipboard 5: Bim mediates the elimination of functionally unfit Th1 responders from the memory pool. 2013 Add to clipboard 6: Recombinant BCG coexpressing Ag85B, CFP10, and interleukin-12 induces multifunctional Th1 and memory T cells in mice. 2012 Add to clipboard 7: Isolation, expansion and characterisation of alloreactive human Th17 and Th1 cells. 2012 Add to clipboard 数据来源 http://arrowsmith.psych.uic.edu/cgi-bin/arrowsmith_uic/edit_b.cgi
来自清华大学生命科学学院和冷泉港实验室的研究人员在近期发表的文章中解析了一种重要的精神分裂症易感基因的作用机制,有助于解析神经递质作用机理,这一研究成果公布在《美国国家科学院院刊》( PNAS )杂志上。 在这篇文章中,研究人员发现一个精神分裂症单易感基因:dysbindin能通过两个独立的机制,分别调控谷氨酸和多巴胺功能,从而导致两种临床相关的行为表型。dysbindin(dystrobrevin-binding protein),即短棒菌素结合蛋白基因,这一基因于2002年被报道,称其多态性与精神分裂症有关,之前的研究表明这一基因能影响谷氨酸和多巴胺功能,并引起脊椎动物和无脊椎动物的临床相关行为。在这一基础上,研究人员又发现减少果蝇突触前神经元中dysbindin基因的表达量,会大幅抑制谷氨酸突触递质,而这种谷氨酸缺失会导致记忆受损。 但是神经胶质细胞中这一基因表达量降低,则会引起高多巴胺活性,从而引起异常运动,以及交配改变。这些数据说明,dysbindin基因能调控谷氨酸神经功能,以及多巴胺代谢。 近期来自安徽医科大学等处的研究人员还新发现一个新精神分裂症易感基因,他们通过全基因组关联研究平台和生物信息分析技术,对近12000例患者和正常对照人群的全基因组关联研究,结果在11号染色体上发现了一个新的精神分裂症易感基因TSPAN18,同时验证了国外既往研究发现的位于6号染色体上的易感基因。 文章的通讯作者是钟毅教授,其早年毕业于清华大学工程物理系,于美国爱荷华大学获得博士学位,1992年受聘到美国冷泉港实验室,2001年被聘为清华大学生物系讲座教授,博士生导师。同年被聘为教育部长江计划特聘教授。 神经递质(neurotransmitter)是指在神经元的突触前膜向突触后膜起信息传递作用的化学物质,又称神经介质神经系统传递信息,是从各种神经元轴突末端释放一定的神经递质,该递质通过突触间隙作用于突触后膜,产生突触后电位,引起下一级神经元的应答活动。这种通过神经递质的化学传递是突触传递的基本形式。研究发现多神经递质系统的失调是许多精神疾病的重要病理生理特征,其中尤其是精神分裂症表现明显。但是至今科学家们对于其中的机制了解的还并不多。 doi:10.1073/pnas.1114569108 PMC: PMID: Schizophrenia susceptibility gene dysbindin regulates glutamatergic and dopaminergic functions via distinctive mechanisms in Drosophila Lisha Shao Yichun Shuai Jie Wang Shanxi Feng Binyan Lu Zuo Li Yukai Zhao Lianzhang Wang and Yi Zhong The dysfunction of multiple neurotransmitter systems is a striking pathophysiological feature of many mental disorders, schizophrenia in particular, but delineating the underlying mechanisms has been challenging. Here we show that manipulation of a single schizophrenia susceptibility gene, dysbindin , is capable of regulating both glutamatergic and dopaminergic functions through two independent mechanisms, consequently leading to two categories of clinically relevant behavioral phenotype s. Dysbindin has been reported to affect glutamatergic and dopaminergic functions as well as a range of clinically relevant behaviors in vertebrates and invertebrates but has been thought to have a mainly neuronal origin. We find that reduced expression of Drosophila dysbindin (Ddysb) in presynaptic neurons significantly suppresses glutamatergic synaptic transmission and that this glutamatergic defect is responsible for impaired memory. However, only the reduced expression of Ddysb in glial cells is the cause of hyperdopaminergic activities that lead to abnormal locomotion and altered mating orientation. This effect is attributable to the altered expression of a dopamine metabolic enzyme, Ebony, in glial cells. Thus, Ddysb regulates glutamatergic transmission through its neuronal function and regulates dopamine metabolism by regulating Ebony expression in glial cells.