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D-Gluconic acid solution

D-Gluconic acid solution

公司名称: Sigma-Aldrich
产品编号: G1951
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Ex vivo Whole-cell Recordings in Adult Drosophila Brain
Author:
Date:
2018-07-20
[Abstract]  Cost-effective and efficient, the fruit fly (Drosophila melanogaster) has been used to make many key discoveries in the field of neuroscience and to model a number of neurological disorders. Great strides in understanding have been made using sophisticated molecular genetic tools and behavioral assays. Functional analysis of neural activity was initially limited to the neuromuscular junction (NMJ) and in the central nervous system (CNS) of embryos and larvae. Elucidating the cellular mechanisms underlying neurological processes and disorders in the mature nervous system have been ... [摘要]  果蝇( Drosophila melanogaster )具有成本效益和效率,已被用于在神经科学领域进行许多重要发现并模拟许多神经疾病。使用复杂的分子遗传工具和行为测定已经在理解方面取得了很大进展。神经活动的功能分析最初仅限于神经肌肉接头(NMJ)和胚胎和幼虫的中枢神经系统(CNS)。阐明成熟神经系统中神经过程和病症潜在的细胞机制由于难以从成人大脑中的神经元记录而更具挑战性。为此目的,我们开发了一种离体制剂,其中从成年蝇的头部胶囊中分离出全脑并将其置于记录室中。通过这种制备,可以将成年大脑中鉴定的神经元的全细胞记录与遗传,药理学和环境操作相结合,以探索神经元功能和功能障碍的细胞机制。它还作为评估通过用于治疗神经疾病的行为测定法鉴定的新疗法的作用机制的重要平台。在这里,我们提出了成人 Drosophila 脑中离体制剂和全细胞记录的方案。

【背景】果蝇( Drosophila melanogaster )已被用于在神经科学的各个基本领域(包括学习和记忆)中取得重要发现(Bolduc et al。,2008; Cervantes- Sandoval et al。,2016),突触形成和调节(Genç et al。,2017)和昼夜节律(Allada et al。 ,1998; Guo et ...

Optogenetic Mapping of Synaptic Connections in Mouse Brain Slices to Define the Functional Connectome of Identified Neuronal Populations
Author:
Date:
2017-01-05
[Abstract]  Functional connectivity in a neural circuit is determined by the strength, incidence, and neurotransmitter nature of its connections (Chuhma, 2015). Using optogenetics the functional synaptic connections between an identified population of neurons and defined postsynaptic target neurons may be measured systematically in order to determine the functional connectome of that identified population. Here we describe the experimental protocol used to investigate the excitatory functional connectome of ventral midbrain dopamine neurons, mediated by glutamate cotransmission (Mingote et al., ... [摘要]  神经回路中的功能连通性由其连接的强度,发病率和神经递质特性决定(Chuhma,2015)。使用光遗传学,可以系统地测量识别的神经元群体和定义的突触后靶神经元之间的功能性突触连接,以便确定该识别群体的功能性连接群。这里我们描述了用于研究由谷氨酸共转播介导的腹侧中脑多巴胺神经元的兴奋性功能性连接体的实验方案(Mingote等,2015)。通过将编码通道视紫红质(ChR2)的腺相关病毒(AAV)注射到DATIREScre小鼠的腹侧中脑中,使多巴胺神经元变得光敏。多巴胺合成酶酪氨酸羟化酶的免疫荧光证实ChR2表达在多巴胺神经元中的功效和特异性。然后,切片膜片钳记录由接受多巴胺神经元投影的区域中的神经元产生,并且确定兴奋性连接的发生率和强度。所有接受多巴胺神经元投射的区域的连接发生率和强度的总结构成功能性连接体。
【背景】为了建立特定神经回路的功能,有必要确定解剖连接,解剖连接的映射及其功能连接,连接的强度,发病率和神经递质性质的映射。使用单因素限制的病毒性突触后追踪技术,可以描述包括多巴胺系统在内的神经回路的复杂解剖连接(Callaway and Luo,2015; ...

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