Voltammetry of 5-HT Transmission in Psychiatric & Degenerative Disease Models

精神病学中 5-HT 传输的伏安法

基本信息

批准号：
7595918
负责人：
ANNE MILASINCIC ANDREWS
金额：
$ 23.31万
依托单位：
PENNSYLVANIA STATE UNIVERSITY, THE
依托单位国家：
美国
项目类别：
财政年份：
2001
资助国家：
美国
起止时间：
2001-12-01 至 2010-03-31
项目状态：
已结题

来源：
https://reporter.nih.gov/project-details/7595918
关键词：
Adult Affective Age Aggressive behavior Alzheimer&apos s Disease Anatomy Antidepressive Agents Anxiety Anxiety Disorders Arts Award Axon Behavior Biological Models Brain Brain-Derived Neurotrophic Factor Cell Culture Techniques Cells Chemicals Chronic Code Cognition Complex Data Degenerative Disorder Development Disease Disease model Dose Eating Emotions Engineering Etiology Functional disorder Gene Expression Gene Targeting Genes Genetic Genetic Models Genetic Polymorphism Genetic Variation Genetically Engineered Mouse Growth Hereditary Disease Human Human Genetics Individual Investigation Isoleucine Kinetics Knockout Mice Knowledge Lead Life Link Mental disorders Methods Microdialysis Microelectrodes Molecular Mood Disorders Moods Mouse Strains Mus Mutation Nerve Degeneration Neurodegenerative Disorders Neuronal Plasticity Neurotic Disorders Neurotransmitters Obsessive-Compulsive Disorder Outcome Study Pathogenesis Pathology Patients Personality Traits Phenotype Play Point Mutation Population Predisposition Process Promoter Regions Prosencephalon Psychiatric therapeutic procedure Regulation Research Research Personnel Resolution Role Serotonin Signaling Molecule Single Nucleotide Polymorphism Specificity Speed Stress System Techniques Testing Therapeutic Valine Variant Woman age related analytical method carbon fiber depression design experience extracellular gain of function genetic variant in vivo lymphoblast men model design mouse model nerve supply neurotransmission neurotrophic factor novel programs promoter radiochemical response reuptake serotonin transporter transmission process uptake

项目摘要

DESCRIPTION (provided by applicant): The serotonin neurotransmitter system is known to regulate emotion, anxiety states and cognition. Moreover, altered serotonin transmission is hypothesized to be involved in the etiology and treatment of mood and anxiety disorders, and neurodegenerative diseases including Alzheimer's disease. This project is designed to take advantage of the high temporal and spatial resolution afforded by carbon fiber microelectrode voltammetry analytical methods to characterize changes in serotonin neurotransmission in three important human and mouse models with direct relevance to psychiatric and degenerative disorders. The proposed research will: (1) Use high-speed chronoamperometry to evaluate differences in the kinetics of serotonin reuptake in human lymphoblast cell cultures derived from individuals with variable serotonin transporter expression driven by two common promoter polymorphisms (5-HTTLPR and rs25531) in combination with an lle425Val coding region substitution mutation found in rare familiar forms of obsessive compulsive disorder; and (2) Employ fast cyclic voltammetry to characterize alterations in the dynamics of serotonin release and reuptake in vivo in serotonin transporter knockout mice and brain-derived neurotrophic factor (BDNF) knockout mice. Our overarching hypothesis states that potentially subtle but biologically important changes in serotonergic neurotransmission occur in mice and humans with altered serotonin transporter expression. Further, we theorize that changes in serotonin transmission underlie age-related degenerative loss of serotonergic innervation in mice with reduced BDNF. We postulate that application of fast electrochemical methods is necessary to detect these changes in brain neurotransmission, which are fundamental to the investigation of basic and disease-related processes. This outcome of these studies will reveal the extent to which voltammetric techniques are able to differentiate altered serotonin neurotransmission in genetically engineered mice and human cells with genetic alterations important for advancing our knowledge of the pathogenesis and treatment of psychiatric and neurodegenerative diseases.

描述（由申请人提供）：已知血清素神经递质系统可以调节情绪、焦虑状态和认知。此外，据推测，血清素传输的改变与情绪和焦虑症以及包括阿尔茨海默氏病在内的神经退行性疾病的病因和治疗有关。该项目旨在利用碳纤维微电极伏安分析方法提供的高时间和空间分辨率来表征与精神疾病和退行性疾病直接相关的三种重要的人类和小鼠模型中血清素神经传递的变化。拟议的研究将：（1）使用高速计时安培法来评估人淋巴母细胞培养物中血清素再摄取动力学的差异，这些细胞培养物源自具有由两种常见启动子多态性（5-HTTLPR和rs25531）组合驱动的可变血清素转运蛋白表达的个体具有在罕见的熟悉形式的强迫症中发现的 lle425Val 编码区替代突变； (2) 采用快速循环伏安法来表征血清素转运蛋白敲除小鼠和脑源性神经营养因子 (BDNF) 敲除小鼠体内血清素释放和再摄取动力学的变化。我们的总体假设表明，在血清素转运蛋白表达改变的小鼠和人类中，血清素能神经传递可能发生微妙但具有生物学意义的变化。此外，我们推测，在 BDNF 减少的小鼠中，血清素传输的变化是与年龄相关的血清素神经支配退化性丧失的基础。我们假设应用快速电化学方法对于检测大脑神经传递的这些变化是必要的，这对于基本和疾病相关过程的研究至关重要。这些研究的结果将揭示伏安技术能够在多大程度上区分基因工程小鼠和人类细胞中血清素神经传递的改变，这些基因改变对于增进我们对精神疾病和神经退行性疾病的发病机制和治疗的了解非常重要。