Summary

2012年3月:本月在朱庇特

Published: March 01, 2012
doi:

Summary

Abstract

(朱庇特)的可视化实验“杂志三月号开始的文章,重点是三个极其重要的检测测量果蝇运动行为。具体来说,这些检测包括幼虫爬行法(幼虫的运动功能),环法(成人运动功能),和求爱法(评估协调和感官能力)。

幼虫爬行检测涉及利益的实验性药物的青少年苍蝇的幼虫和曝光的集合。动物,然后转移到培养皿奠定了一张方格纸上面,可以计算出每分钟的交叉网格线的数目。

快速迭代的负Geotaxis,或环,协议,涉及放置在那里他们被迫温柔攻底部专门小瓶成蝇。果蝇本能地向上爬行,对抗地心引力。通过图像分析,成人运动能力的程度确定测量多远向上苍蝇可以爬在很短的时间内。

为了评估一个更复杂的感官引导行为,是用来求爱法,并开始由性幼稚的男性和女性放到一个专门的仪器称为交配轮。实验会议期间,研究人员记录的时间,在雄性果蝇表现出几个特点求爱行为。令人印象深刻的是,在短短的几分钟内,雄性果蝇会东方向自己的女性,挖掘她的腹部,产生一首歌曲他的翼,舔女性,并最终交配。

两者合计,这些实验代表了一系列强大的行为测试,可以帮助澄清有助于果蝇行为的遗传和环境因素。

本月晚些时候,朱庇特其重点转移运动生理学,其中研究员从秀圣保罗大学的现在的方法设计到复杂的工作,喜欢运动,揭露各种能源系统的贡献。作为一个例子,我们的作者们选择了他们的示范柔道。使用精心定位的便携式气体分析仪,可以测量耗氧量在受控条件下的柔道运动。比较耗氧量之前,期间和运动后,有氧运动和alactic无氧代谢的能量贡献可以决定。采血前和运动后,电化学分析是用来确定乳酸无氧代谢的能量柔道运动的贡献。相结合时,耗氧量和血浆乳酸浓度的数据,可以用来确定不同的能源系统复杂的工作的具体方面的相对贡献,就像一个人的喜爱柔道罚球。

在3月,朱庇特的计划释放的developmental研究涉及酒精暴露在斑马鱼。一旦胚胎发育所需的时间点,可以评估酒精暴露对基因表达的影响,净化mRNA和执行的qPCR和原位杂交的整体安装。利用光镜,形态变化,如体节形状,也可以进行评估。如果感兴趣的基因被发现,以减少或增加乙醇暴露,无论是皑皑的mRNA或吗啉可以注入胚胎,大约两细胞阶段,为了挽救酒精引起的表型。我们的作者在发展中国家斑马鱼在哺乳动物中发现,类似的形态表型和基因表达谱结果显示,酒精暴露,他们也证明可以扭转发育异常的mRNA注入酒精的作用。

在免疫学和感染,朱庇特提出了一种在植物寄生虫学实验,从加州大学河滨分校。特别是,我们太子港雷神有兴趣的根结线虫 – 自由移动通过土壤潮湿,感染植物的根,饲料预留植物寄生虫。首先,描述根结线虫感染的植物和收集处理方法。少年蠕虫一旦发展到一个阶段高传染性,土壤可以接种。后来,根可染色和评估这些寄生虫产生的特征根节的存在。除了盆栽实验中,我们的作者显示如何可以进行明确袋的种植植物根结线虫试验,允许为方便观看的根,并促进这种破坏性的感染存在高通量筛选,占5%全球作物损失,每年。

这个月的朱庇特的内容摘要,突出四个定于本月发布了50篇论文。其他著名的实验涉及在A成像气味诱发反应的方法ntenna果蝇,使用电子鼻来分析从水果中的挥发性化合物,并运送到活细胞的大分子普通办公设备的再利用。

Protocol

Calcium imaging of odor-evoked responses in the Drosophila antennal lobe Ana F. Silbering1, Rati Bell1, C. Giovanni Galizia2, Richard Benton11Center for Integrative Genomics, University of Lausanne, 2Department of Biology, University of Konstanz We describe an established technique to measure and analyze odor-evoked calcium responses in the antennal lobe of living Drosophila melanogaster. Determining the Contribution of the Energy Systems During Exercise Guilherme G. Artioli1, Rômulo Bertuzzi2, Hamilton Roschel1, 3, Sandro H. Mendes1, Antonio H. Lancha1, Emerson Franchini41Laboratory of Applied Nutrition, School of Physical Education and Sport, University of Sao Paulo, 2Aerobic Performance Research Group, School of Physical Education and Sport, University of Sao Paulo, 3Laboratory of Neuromuscular Adaptations to Strength Training, School of Physical Education and Sport, University of Sao Paulo, 4Martial Arts and Combat Sports Research Group, School of Physical Education and Sport, University of Sao Paulo This protocol allows researchers focused on exercise and sports sciences to determine the relative contribution of three different energy systems to the total energy expenditure during a large variety of exercises. High and Low Throughput Screens with Root-knot Nematodes Meloidogyne spp. Hagop S. Atamian, Philip A. Roberts, Isgouhi KaloshianDepartment of Nematology, University of California, Riverside Two distinct methods to screen plants with root-knot nematodes are described. The described approaches include high-throughput screens with nematodes in a nondestructive manner facilitating the use of these plants in breeding programs. Creating Transient Cell Membrane Pores Using a Standard Inkjet Printer Alexander B. Owczarczak, Stephen O. Shuford, Scott T. Wood, Sandra Deitch, Delphine DeanDepartment of Bioengineering, Clemson University A description of the methods used to convert an HP DeskJet 500 printer into a bioprinter. The printer is capable of processing living cells, which causes transient pores in the membrane. These pores can be utilized to incorporate small molecules, including fluorescent G-actin, into the printed cells. Assessing Teratogenic Changes in a Zebrafish Model of Fetal Alcohol Exposure Evyn Loucks1, Sara Ahlgren1, 21Program in Developmental Biology, Children’s Memorial Research Center, 2Department of Pediatrics, Northwestern University In order to understand the molecular mechanisms of the ethanol-induced developmental damage, we have developed a zebrafish model of ethanol exposure and are exploring the physical, cellular, and genetic alterations that occur after ethanol exposure1. We then seek to find potential interventions and rapidly test them in this animal model. Methods to assay Drosophila behavior Charles D. Nichols1, Jaime Becnel1, Udai B. Pandey21Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, 2Department of Genetics, Louisiana State University Health Sciences Center Drosophila melanogaster is a genetically and behaviorally tractable model system that has been used to understand the molecular and cellular basis of many important biological processes for over a century1. Drosophila has been well exploited to gain insights into the genetic basis of fly behavior. Fruit Volatile Analysis using an Electronic Nose Simona Vallone1, Nathan W. Lloyd2, Susan E. Ebeler3, Florence Zakharov11Department of Plant Sciences, University of California, Davis, 2Department of Chemical Engineering and Material Science, University of California, Davis, 3Department of Viticulture and Enology, University of California, Davis A rapid method for volatile compound analysis in fruit is described. The volatile compounds present in the headspace of a homogenate of the sample are rapidly separated and detected with ultra-fast gas chromatography (GC) coupled with a surface acoustic wave (SAW) sensor. A procedure for data handling and analysis is also discussed.

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The authors have nothing to disclose.

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Kolski-Andreaco, A. March 2012: This Month in JoVE. J. Vis. Exp. (61), e4336, doi:10.3791/4336 (2012).

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