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Sodium Hypochlorite Solution (5.65-6%/Laboratory), Fisher Chemical

Company: Fisher Scientific
Catalog#: SS290-1
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Sensitive Estimation of Flavor Preferences in STFP Using Cumulative Time Profiles
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Date:
2017-11-05
[Abstract]  Social transmission of food preference (STFP) is observed among rodents between a demonstrator and a naïve hungry observer. During social interaction, hungry observer receives information about safety of the food consumed by the demonstrator. This task has been implemented to develop a single trial non-aversive learning task in order to test hippocampus dependent non-spatial memory in rodents. In this protocol, we describe some novel modifications to the conventional STFP protocol and analysis for more sensitive estimation of change in preferences. Using this method, preference trends can be observed for weeks after training, allowing one to probe the role of systems consolidation (SC) in declarative memory that is relatively independent of spatial navigation. [摘要]  在示威者和天真饥饿的观察者之间的啮齿动物中观察到食物偏好(STFP)的社交传播。 在社交互动中,饥饿的观察者收到有关示威者消耗食物安全的信息。 为了测试啮齿类动物的海马依赖性非空间记忆,已经实施了这个任务来开发单一试验的非厌恶性学习任务。 在这个协议中,我们描述了对传统STFP协议的一些新的修改,并分析了对偏好变化的更敏感的估计。 使用这种方法,可以在训练后的几个星期观察偏好趋势,使人们可以探索系统整合(SC)在相对独立于空间导航的声明性记忆中的作用。
【背景】Bennet G Galef Jr.在20世纪70年代为了测试记忆机制而开发了基于STFP的大鼠行为模式,并且从那以后,它已经用大鼠和小鼠进行了各种研究(Galef Jr,1977; Clark等人, 2002; Wrenn等人,2003; Ross和Eichenbaum,2006; Smith等人,2007; Choleris等人, ,2011;Lesburguères et al。,2011; ...

Nuclei Isolation from Nematode Ascaris
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Date:
2017-05-05
[Abstract]  Preparing nuclei is necessary in a variety of experimental paradigms to study nuclear processes. In this protocol, we describe a method for rapid preparation of large number of relatively pure nuclei from Ascaris embryos or tissues that are ready to be used for further experiments such as chromatin isolation and ChIP-seq, nuclear RNA analyses, or preparation of nuclear extracts (Kang et al., 2016; Wang et al., 2016). [摘要]  在各种实验范例中准备核是必要的,以研究核过程。在本协议中,我们描述了一种从准备用于进一步实验(如染色质分离和ChIP-seq,核RNA)的蛔虫胚胎或组织快速制备大量相对纯的核的方法分析或准备核提取物(Kang等人,2016; Wang等人,2016)。

背景 核分离通常是研究核事件的分子和生物化学方面的第一步。已经开发了几种方法来分离来自不同组织和细胞类型的细胞核。然而,除了C以外的线虫的细胞核分离方案很少。已经描述了线索,(Ooi等人,2010; Zanin等人,2011; Haenni等人,2012, )。已经使用寄生线虫蛔虫的胚胎来制备用于体外无细胞系统的各种提取物(Cohen等人,2004) ; Lall等人,2004)。然而,这些提取物通常是全细胞提取物。在这里,我们描述了从线虫蛔虫制备细胞核的方法。

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