{{'Search' | translate}}
 

VWR® High-Performance Centrifuge Tubes with Flat or Plug Caps, Polypropylene, 15 mL

VWR ®高性能离心管,带平头或塞帽,聚丙烯

Company: VWR
Catalog#: 89039-670
Bio-protocol()
Company-protocol()
Other protocol()

D-serine Measurements in Brain Slices or Other Tissue Explants
Author:
Date:
2018-01-20
[Abstract]  D-serine is an atypical amino acid present in the mammalian body (most amino acids in the mammalian body are L-isomers) that is mostly known in neuroscience for its role as a co-agonist controlling the N-methyl D-aspartate receptor (NMDAR). D-serine levels are decreased in patients with schizophrenia and this is thought to mediate, at least in part, the hypofunction of NMDARs that is central to the glutamate hypothesis for the etiology of this neuropsychiatric disorder. D-serine detection was first established using high performance liquid chromatography, a costly and complex technique that requires high levels of expertise. But with the increasing interest in this unconventional amino acid, there is an increasing need for easier, cheaper and more accessible detection methods. Here we ... [摘要]  D-丝氨酸是存在于哺乳动物体内的非典型氨基酸(哺乳动物体内的大部分氨基酸是L-异构体),其在神经科学中主要是作为控制N-甲基D-天冬氨酸受体的共激动剂的作用而已知的NMDA受体)。精神分裂症患者的D-丝氨酸水平降低,这被认为至少部分地介导了NMDARs功能减退,这种谷氨酸假说对于这种神经精神障碍的病因至关重要。 D-丝氨酸检测首先使用高效液相色谱法建立,这是一种昂贵且复杂的技术,需要高水平的专业知识。但随着对这种非常规氨基酸的兴趣日益增加,人们越来越需要更容易,更便宜和更容易获得的检测方法。在这里,我们描述了我们在最近的出版物(Papouin等人,2017b)中采用的安培法,基于生物传感器的方法。它可以对新鲜组织的D-丝氨酸水平进行可靠的测量,如急性脑切片,浓度高于100 nM,技术要求最低。

【背景】N-甲基D-天冬氨酸受体(NMDAR)是脑,脊髓和周围神经系统如肠神经元中神经递质谷氨酸的受体。在肾小管细胞和软骨细胞中也有发现。除谷氨酸外,NMDAR的激活需要在专用结合位点上结合共激动剂(Johnson和Ascher,1987; Kleckner和Dingledine,1988)。非常规氨基酸D-丝氨酸是神经系统众多区域中NMDAR的内源性共激动剂(参见Papouin等人,2017a)。在肝脏和肾脏中也可以发现其丰富的降解和排泄(Montesinos ...

Obtaining Acute Brain Slices
Author:
Date:
2018-01-20
[Abstract]   Obtaining acute brain slices for electrophysiology or amperometric recordings has become a routine procedure in most labs in the field of neuroscience. Yet, protocols describing the step by step process are scarce, in particular for routine acute preparations such as from the mouse hippocampus. Here we provide a detailed protocol for the dissection, extraction and acute slicing of the mouse brain, including tips and list of material required. [摘要]  在神经科学领域的大多数实验室中,获得用于电生理学或电流记录的急性脑切片已经成为常规手术。 然而,描述逐步过程的方案是稀缺的,特别是对于例如来自小鼠海马的常规急性制剂。 在这里,我们提供了一个详细的协议,解剖,提取和急性切片的小鼠大脑,包括技巧和所需材料清单。

【背景】随着体外电生理和电流记录技术的民主化,从啮齿动物大脑获取急性切片已经成为神经科学研究中经典和关键的步骤。然而,实现这一程序所需的技术诀窍通常是口头传递的,大多数实验室已经开发了自制的食谱,并根据自己的需要或感兴趣的区域调整了最重要的步骤,从而缺乏描述如何逐步获得高质量的急性脑切片。虽然可以发现一些方案描述特别具有挑战性的准备,例如成年小鼠脊髓的急性切片(Garre等人,Bioprotocol 2017: https://doi.org/10.21769/BioProtoc.2102 ),描述了更多日常准备的基本程序( ...

Isolation of Rhizosphere Bacterial Communities from Soil
Author:
Date:
2015-08-20
[Abstract]  Rhizosphere bacterial communities have become a major focal point of research in recent years, especially regarding how they affect plants and vice versa (Philippot et al., 2013). Changes in microbial density and diversity within the rhizosphere occur in a spatial temporal manner. The soil zone closest to the plant roots has the most density and diversity of microbes (Clark, 1940). The lack of methods to consistently isolate rhizosphere samples in a spatially defined manner is a major bottleneck in rhizosphere microbiology. We hypothesized that microbes with increasing affinities to and distance from the plant root can be isolated using increasing strengths of physical disruption. Sonication is an excellent choice due to the ability to gently remove rhizosphere soil and ... [摘要]  根际细菌群落已成为近年来研究的主要焦点,特别是关于它们如何影响植物或反之亦然(Philippot等人,2013)。根际微生物密度和多样性的变化以空间时间方式发生。最接近植物根部的土壤区具有最密集和多样性的微生物(Clark,1940)。缺乏以空间定义的方式一致地分离根际样品的方法是根际微生物学的主要瓶颈。我们假设可以使用增加的物理破坏的强度来分离具有对植物根部的亲和力和距植物根部的距离增加的微生物。超声是一个很好的选择,因为能够轻轻地去除根际土壤和细菌生物膜而不损害植物根(Doi T等人,2007; Bulgarelli等人,2012年; Lundberg等人,2012)。此外,简单地增加超声处理的时间可以增加物理力的量。我们使用这样的方法来一致地分离对大豆根具有不同亲和力的微生物群落(White等人,2014)。本文介绍了使用连续超声处理来隔离远端,中间和近端土壤与大豆根部的根际。

Comments