这项工作得到了来自美国国立糖尿病和消化和肾脏疾病研究所的奖项编号 P30DK056336 的支持, 该研究中心是在伯明翰的阿拉巴马大学营养和肥胖研究所提供的试验补助金。

满足要求由果蝇活动监控单元 (用于源信息, 请参阅材料表) 安装在由马达单元控制的旋转臂上 (图1)。活动监视器确定在给定时间范围内, 在检测管中间的激光束阵列被打乱的频率。有关详细的绘图和深入的描述, 请参见我们以前的出版物9。虽然我们的系统使用 LAM25H 单元, 满足要求可以修改, 以适应其他果蝇活动监测单位以及。
1. 测试满足要求的设置
<ol><li>负载测试飞入玻璃标本管通过麻醉动物与 CO2或其他选择的方法来处理, 移动到空管, 并盖管。</li>
	<li>将封闭的玻璃试样管插入活动监控单元的插槽中。使用橡胶 O 形环 (17-18 规) 和/或橡胶带在单位两侧确保管子在旋转过程中不移动:<ol>
<li>在试样管上滑动一 o 形环, 并将 o 形环定位在管的中点附近。将试样管插入到活动监视器的插槽中, 并将其居中。</li>
		<li>根据需要移动 o 形环, 并确保一旦试样管居中, O 形环就会尽可能靠近活动监视器单元滑动。通过在玻璃管背面滑动第二 o 形环来固定试样管, 再次将 o 形环移动到活动监视器单元的附近。</li>
	</ol>
</li>
	<li>通过翻转设备前面的电源开关来启动满足要求的旋转。在本示例中, 将设备前面的刻度盘调整为所需的速度 (4 rpm (每分钟旋转)。 注意: 此示例中的旋转速度被选择为与以前发布的研究7相匹配。由于不同的转速将导致不同的动物活动水平, 当启动一项新的研究, 优化的转速为特定的实验设置 (基因型, 运动回合的长度,等.) 可能是必要的。 注意: 重要的是要确保管道正确定位, 使它们不会沿满足要求单位底部拖动旋转。</li>
	<li>通过打开 DAMSystem308 软件并确保连接指示灯保持绿色以进行多个旋转, 测试与果蝇活动监视单元提供的数据收集系统的连接。软件将开始记录数据到文本文件 "monitorX" (X 是单位号, 如果多台显示器正在使用) 时立即启动。记录频率可在 "首选项" 选项卡中进行调整;我们通常以5分钟的间隔记录。</li>
	<li>调查由 DAMSystem308 软件生成的文本文件, 以确保数据连接正常工作。连接的问题导致了切口, 时间点为满足要求中的所有位置记录了0活动 (请参见代表结果和表2)。如果出现切口, 请调整导致旋转电话插孔的数据连接, 如在旋转期间, 此连接可能会松动或扭曲。我们发现, 稳定与磁带的连接有助于防止此问题。</li>
</ol>2. 动物的制备
注意: 所有动物在标准条件下被饲养和测试在一个孵化器 (25 °c, 60-70% 湿气, 12 h 光/黑暗周期) 在糖蜜或玉米粉媒介10。
<ol><li>两周前的计划实验, 建立了小瓶与控制动物密度收集实验苍蝇从;我们通常会建立一个小瓶与7男性和10女性。一个健康的股票, 从一个单一的瓶子, 大约15处女男性和15女性可以收集在4天的时间内。根据化验所需的动物数量, 调整所建立的小瓶数量;一个典型的化验在我们的实验室包括10套10处女和雌性每种基因型 (100 男性和100女性)。 注: 非处女蝇可根据具体实验问题使用。如果对非处女动物进行长期试验, 爬行幼虫可能干扰准确的活动监测。</li>
	<li>在设置瓶子后一周内移除母蝇。</li>
	<li>从10天开始, 在设置了瓶子后, 从瓶子里收集处女苍蝇, 然后把它们按性别分开存放。</li>
	<li>收集足够的动物为实验和年龄他们根据需要, 3 天在这个例子。 注意: 我们通常用 CO2麻醉动物进行处理。CO2已知会在治疗后的较长时间内影响动物活动水平 (例如, 请参阅et . 201511)。如果 CO2效果干扰计划的下游化验或分析, 请使用不同的麻醉方法, 如冰麻醉。</li>
</ol>3. 与满足要求的数据收集
<ol><li>麻醉使用 CO2或另一种麻醉方法对动物进行定量研究。根据需要将它们分成组, 并将这些动物群装入活动监视器的空玻璃管中;在这个例子中, 同一年龄的10只动物被装入每个玻璃管, 10 个复制为每种动物类型 (性/基因型)。一定要注意每个管子里装的是哪种动物类型。 注: 对于较长的实验, 食品可以包括在标本管中。在这种情况下, 重要的是食物是安全的, 并不会在旋转过程中脱落。</li>
	<li>将玻璃化验管装入满足要求单元, 并用橡胶 O 形环将其固定。如果用一个以上的性别/基因型, 使用随机块设计或随机化的动物在满足要求的位置将消除任何潜在的位置影响。随机化可以通过给每个小瓶分配一个随机数来实现, 例如从基于 web 的随机数生成器 (例如, https://www.randomizer.org/) 或电子表格中, 然后根据随机数订购瓶子。</li>
	<li>将满足要求放入孵化器, 确保恒温、湿度和光照条件。确保数据和电源线都已正确连接。</li>
	<li>允许动物从麻醉中恢复, 适应新的环境1小时。</li>
	<li>开始实验, 启动满足要求的旋转, 以期望的速度。 注意: 另一种选择是先从动物开始旋转前收集基线活动数据, 然后记录活动水平以响应旋转刺激。</li>
	<li>通过打开 DAMsystem308 软件 (只需打开软件启动数据收集) 启动数据收集。数据被写入一个文本文件在设定的间隔 (这里, 5 分钟);如果需要, 请更改 "首选项" 选项卡中的间隔设置 (请参见步骤 1.4)。</li>
	<li>要确保数据成功传输到计算机, 请在经过一个或两个时间间隔后打开由 DAMsystem308 软件生成的文本文件, 并确认数据正在写入该文件。关闭并重新打开此文件以查看任何其他时间点的数据。收集所需时间量的数据;在本例中, 2 h。 注意: 在化验期间不要打开孵化器, 因为动物对任何干扰都非常敏感, 并且可能会随着活动的增加而反应。</li>
	<li>在练习的最后, 通过关闭 DAMsystem308 软件终止数据收集, 然后关闭满足要求。将动物从玻璃化验管中取出, 然后清洗管子。如果需要不同年龄的重复措施, 这些动物可以被移回食物瓶中。 注: 如果死亡发生在演习的制度, 它应该被记录, 因为存在的死苍蝇可以影响活动计数。在我们的经验与 DGRP2 飞线12,13, 演习在 4 rpm 2 小时没有导致任何死亡, 但较弱的菌株可能反应不同。</li>
</ol>4. 数据分析
<ol><li>打开 DAMSystem308 软件生成的标记为 "Monitor1" 的 .txt 文件。</li>
	<li>检查数据文件中是否存在数据捕获过程中可能发生的任何问题 (遗漏的时间点、等;表 1)。如有必要, 请在录制开始和结束时删除数据点, 对文件进行审查。</li>
	<li>使用您选择的统计软件 (例如, R), 分析所收集的数据。生成描述性统计数据并进行方差分析, 以调查性别和基因型等影响, 如果这些资料是正常分布的。如果数据通常不分布, 请使用非参数方法 (如克鲁斯卡尔-沃利斯测试) 来比较组。所需的具体分析将取决于具体的科学问题和实验设计。</li>
</ol>

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作者没有什么可透露的。

如有代表性的结果表明, 满足要求能够准确测量果蝇的运动活动。满足要求是灵活的, 并允许研究人员解决与运动生物学或运动干预有关的各种研究问题。要突出显示的协议中有两个关键步骤。首先, 必须测试满足要求的设置, 以确保从满足要求到 DAMSystem308 的数据传输正常工作。如果没有正确设置, 数据线可能会在旋转过程中发生纠缠, 有时满足要求和 DAMSystem308 之间的连接由于磨损而在旋转连接处...

最近, 研究人员已经开始使用果蝇果蝇来研究运动生物学。"黑腹"是100年来1、2的遗传模型系统。然而, 果蝇的研究不仅为遗传学做出了贡献, 也为其他学科包括神经生物学、行为生物学和生理学提供了帮助3。2009年, 第一台用于果蝇的运动机器被描述为4。电力塔利用动物的消极 geotaxis 反应。当扰时 , 果蝇倾向于移动到其外壳的顶端。这种反应是建立良好的, 是流行的 "环" (快速迭代阴性 Geotaxis5) 的基础, 用于估计果蝇的攀爬能力和/或体能。该电源塔使用与电机单元相连的机械臂, 在其外壳内反复举起一组动物, 并将它们放回地面以诱导负 geotaxis 响应 (Tinkerhess et 20126提供一个视频说明使用的电源塔)。在电力塔上进行长时间的治疗, 从而增加了动物的体力活动量 (跑步或飞行), 与未经处理的控制动物相比, 随着时间的推移, 提高了身体健康的环检测的性能4。因此, 这项工作证明了利用果蝇作为运动生物学模型的可行性。
为了扩大果蝇运动研究的可用工具, 在 2016年, 门德斯和同事们描述了第二个果蝇运动机器, Treadwheel7。与动力塔类似, Treadwheel 利用果蝇的负 geotaxis 反应。然而, 这种反应是由动物外壳的持续旋转引起的, 而不是像在动力塔中那样把它们举起来。这种感应方法是温和的, 并允许一个更耐用的运动机制, 以避免任何物理创伤可能发生在电力塔运动 (见 Katzenberger, r.j. et 等20138的影响反复物理果蝇健康的创伤)。与动力塔4类似, 在 Treadwheel 上对动物的运动治疗会导致多种生理反应, 包括身体健康、甘油三酯水平和体重7的变化。因此, 果蝇生物学家研究运动有两种互补的方法。
动力塔和 Treadwheel 的一个限制是无法测量运动治疗引起的活动量。从 Treadwheel 的录像分析显示, 不同果蝇菌株对运动治疗的反应有显著性差异7。具体而言, 研究的菌株在受刺激的7时所执行的额外活动有多大不同。这一观察促使我们开发了第三个运动系统, 即旋转运动定量系统 (满足要求), 它允许我们在旋转诱导运动中测量动物活动水平 9.满足要求利用一个商业上可用的活动监测单元, 安装在旋转臂上, 通过旋转来刺激运动, 如在 Treadwheel 中。与满足要求的初步工作证实, 基因上不同的果蝇菌株-和性别-对旋转刺激有明显不同的反应, 因此, 不同基因型的运动所引起的运动量不完全相同 9.因此, 满足要求现在使果蝇生物学家能够测量治疗引起的运动量, 在运动领域开辟了各种新的研究途径。
这里我们详细描述了如何使用满足要求来量化旋转运动。满足要求诱导旋转运动, 同时测量被治疗动物的活动水平。满足要求可以容纳各种各样的运动项目, 从简单的2小时连续锻炼机制这里展示到更加复杂的间隔训练方法如门德斯和同事7所描述, 并且刺激可以通过调整通过转速 (约1-13 旋转每分钟)。根据用于生产满足要求的活动监测单元, 该方法适用于对单飞蝇或大型动物种群的分析。由于这种多功能性, 满足要求为果蝇研究人员提供了一系列的机会来研究, 例如, 不同的锻炼制度, 饮食干预, 或人口密度的影响。

<table><tbody><tr><td>Drosophila Activity Monitor&amp;nbsp;</td><td>Trikinetics</td><td>LAM25H</td><td>REQS component</td></tr><tr><td>Telephone Cord Detangler</td><td>Uvital</td><td>uv20170719</td><td>REQS component</td></tr><tr><td>Vial closures (flugs)</td><td>Genesee Scientific</td><td>49-102</td><td>Drosophila culture supplies</td></tr><tr><td>Vials&amp;nbsp;</td><td>Genesee Scientific</td><td>32-120</td><td>Drosophila culture supplies</td></tr><tr><td>Drosophila culture netting</td><td>Carolina Biological Supply</td><td>173090</td><td>Drosophila culture supplies</td></tr><tr><td>Cornmeal</td><td>Pepsico</td><td>43375</td><td>Drosophila media</td></tr><tr><td>Molasses</td><td>Golden Barrel</td><td>BLA-GAL</td><td>Drosophila media</td></tr><tr><td>Agar</td><td>Apex Bioresearch</td><td>66-103</td><td>Drosophila media</td></tr><tr><td>Inactive Dry Yeast</td><td>Genesee Scientific</td><td>62-106</td><td>Drosophila media</td></tr><tr><td>Tegosept</td><td>Apex Bioresearch</td><td>20-258</td><td>Drosophila media</td></tr><tr><td>Propionic acid</td><td>Genesee Scientific</td><td>20-271</td><td>Drosophila media</td></tr></tbody></table>

measuring exercise levels in drosophila melanogaster using the rotating exercise quantification system (reqs)

果蝇是运动生物学研究的一个新的模型有机体。迄今为止, 已经介绍了两个主要的运动系统、电力塔和 Treadwheel。然而, 还缺乏一种方法来测量通过运动治疗引起的额外动物活动量。旋转运动量化系统 (满足要求) 填补了这种需求, 为经历旋转运动的动物提供了动物活动的量度。本协议详细介绍了如何使用满足要求来评估旋转运动过程中的动物活动, 并说明了可以生成的数据类型。在这里, 我们展示了如何使用满足要求来衡量在运动诱发活动中的性别和应变特定的差异。满足要求还可以用来评估不同的实验参数, 如年龄, 饮食, 或人口大小对运动诱发活动的影响。此外, 它还可用于比较不同运动训练方案的功效。重要的是, 它提供了一个机会, 以规范的运动治疗之间的菌株, 使研究员能够达到同等数量的活动之间的群体, 如果需要的话。因此, 满足要求是一个值得注意的新资源为运动生物学家与果蝇模型系统和补充现有的运动系统。

使用满足要求的单个运行的输出是 DAMSystem308 软件生成的数据表, 默认情况下将标记为 "Monitor1.txt" (例如, 请参见补充文件1)。此类表的摘录显示在表 1中。每一列都包含来自单个检测管的数据, 而行包含从实验开始 (顶端) 到末尾 (底部) 的每个时间间隔中测量的活动。如果有数据切口 (如表 2中所示), 则应监视前三个数据点, 在这种情况下...

Watch this Scientific Journal Video about Measuring Exercise Levels in Drosophila melanogaster Using the Rotating Exercise Quantification System REQS at JoVE.com

Measuring Exercise Levels in Drosophila melanogaster Using the Rotating Exercise Quantification System REQS

旋转运动定量系统 (满足要求) 可以通过旋转来诱导果蝇运动, 同时测量动物的活动量. 在这里, 我们提出一个点对点协议, 详细说明如何测量动物的活动水平, 使用满足要求的旋转运动治疗。

使用旋转运动量化系统测量果蝇中的运动水平 (满足要求)

Drosophila melanogaster is a new model organism for studies in exercise biology. To date, two main exercise systems, the Power Tower and the Treadwheel ...

measuring-exercise-levels-drosophila-melanogaster-using-rotating

Universidad San Sebastian

Research

JoVE Journal

Genetics

Measuring Exercise Levels in Drosophila melanogaster Using the Rotating Exercise Quantification System (REQS)

7.4K 次观看.  University of Alabama at Birmingham. 旋转运动定量系统 (满足要求) 可以通过旋转来诱导果蝇运动, 同时测量动物的活动量. 在这里, 我们提出一个点对点协议, 详细说明如何测量动物的活动水平, 使用满足要求的旋转运动治疗。

视频: Measuring Exercise Levels in Drosophila melanogaster Using the Rotating Exercise Quantification System REQS

Assaying Locomotor Activity to Study Circadian Rhythms and Sleep Parameters in Drosophila

Most life forms exhibit daily rhythms in cellular, physiological and behavioral phenomena that are driven by endogenous circadian (&equiv;24 hr) pacemakers or clocks. Malfunctions in the human circadian system are associated with numerous diseases or disorders. Much progress towards our understanding of the mechanisms underlying circadian rhythms has emerged from genetic screens whereby an easily measured behavioral rhythm is used as a read-out of clock function. Studies using Drosophila have made seminal contributions to our understanding of the cellular and biochemical bases underlying circadian rhythms. The standard circadian behavioral read-out measured in Drosophila is locomotor activity. In general, the monitoring system involves specially designed devices that can measure the locomotor movement of Drosophila. These devices are housed in environmentally controlled incubators located in a darkroom and are based on using the interruption of a beam of infrared light to record the locomotor activity of individual flies contained inside small tubes. When measured over many days, Drosophila exhibit daily cycles of activity and inactivity, a behavioral rhythm that is governed by the animal's endogenous circadian system. The overall procedure has been simplified with the advent of commercially available locomotor activity monitoring devices and the development of software programs for data analysis. We use the system from Trikinetics Inc., which is the procedure described here and is currently the most popular system used worldwide. More recently, the same monitoring devices have been used to study sleep behavior in Drosophila. Because the daily wake-sleep cycles of many flies can be measured simultaneously and only 1 to 2 weeks worth of continuous locomotor activity data is usually sufficient, this system is ideal for large-scale screens to identify Drosophila manifesting altered circadian or sleep properties.

Assaying Locomotor Activity to Study Circadian Rhythms and Sleep Parameters in Drosophila

We describe procedures for recording daily locomotor activity rhythms of Drosophila and subsequent data analysis. Locomotor activity rhythms are a reliable behavioral output of animal circadian clocks and are used as the standard readout of clock function when studying circadian mutants or examining how the environment regulates the circadian system.

含量自发活动，研究昼夜节律和睡眠参数果蝇</em

Most life forms exhibit daily rhythms in cellular, physiological and behavioral phenomena that are driven by endogenous circadian (&equiv;24 hr) ...

科研

神经科学

The TreadWheel: Interval Training Protocol for Gently Induced Exercise in Drosophila melanogaster

The incidence of complex metabolic diseases has increased as a result of a widespread transition towards lifestyles of increased caloric intake and lowered activity levels. These multifactorial diseases arise from a combination of genetic, environmental, and behavioral factors. One such complex disease is Metabolic Syndrome (MetS), which is a cluster of metabolic disorders, including hypertension, hyperglycemia, and abdominal obesity. Exercise and dietary intervention are the primary treatments recommended by doctors to mitigate obesity and its subsequent metabolic diseases. Exercise intervention, in particular aerobic interval training, stimulates favorable changes in the common risk factors for Type 2 Diabetes Mellitus (T2DM), Cardiovascular Disease (CVD), and other conditions. With the influx of evidence describing the therapeutic effect exercise has on metabolic health, establishing a system that models exercise in a controlled setting provides a valuable tool for assessing the effects of exercise in an experimental context. Drosophila melanogaster is a great tool for investigating the physiological and molecular changes that result from exercise intervention. The flies have short lifespans and similar mechanisms of metabolizing nutrients when compared to humans. To induce exercise in Drosophila, we developed a machine called the TreadWheel, which utilizes the fly&#39;s innate, negative geotaxis tendency to gently induce climbing. This enables researchers to perform experiments on large cohorts of genetically diverse flies to better understand the genotype-by-environment interactions underlying the effects of exercise on metabolic health.

The TreadWheel: Interval Training Protocol for Gently Induced Exercise in Drosophila melanogaster

The TreadWheel uses rotational motion to gently induce exercise in adult Drosophila melanogaster by exploiting flies&#39; innate, negative geotaxis. It allows for analysis of the interactions between exercise and factors, such as genotype, sex, and diet, and their effect on physiological and molecular assays to assess metabolic health.

TreadWheel:果蝇轻度诱导运动的间歇训练协议

The incidence of complex metabolic diseases has increased as a result of a widespread transition towards lifestyles of increased caloric intake and ...

遗传学

Determination of the Spontaneous Locomotor Activity in Drosophila melanogaster

Drosophila melanogaster has been used as an excellent model organism to study environmental and genetic manipulations that affect behavior. One such behavior is spontaneous locomotor activity. Here we describe our protocol that utilizes Drosophila population monitors and a tracking system that allows continuous monitoring of the spontaneous locomotor activity of flies for several days at a time. This method is simple, reliable, and objective and can be used to examine the effects of aging, sex, changes in caloric content of food, addition of drugs, or genetic manipulations that mimic human diseases.

Determination of the Spontaneous Locomotor Activity in Drosophila melanogaster

Drosophila melanogaster are useful in studying genetic or environmental manipulations that affect behaviors such as spontaneous locomotor activity.&#160; Here we describe a protocol that utilizes monitors with infrared beams and data analysis software to quantify spontaneous locomotor activity.&#160;

在自发活动的测定<em&gt;果蝇</em

Drosophila melanogaster has been used as an excellent model organism to study environmental and genetic manipulations that affect behavior. One such ...

A Low-cost Method for Analyzing Seizure-like Activity and Movement in Drosophila

Video tracking systems have been used widely to analyze Drosophila melanogaster movement and detect various abnormalities in locomotive behavior. While these systems can provide a wealth of behavioral information, the cost and complexity of these systems can be prohibitive for many labs. We have developed a low-cost assay for measuring locomotive behavior and seizure movement in D. melanogaster. The system uses a web-cam to capture images that can be processed using a combination of inexpensive and free software to track the distance moved, the average velocity of movement and the duration of movement during a specified time-span. To demonstrate the utility of this system, we examined a group of D. melanogaster mutants, the Bang-sensitive (BS) paralytics, which are 3-10 times more susceptible to seizure-like activity (SLA) than wild type flies. Using this novel system, we were able to detect that the BS mutant bang senseless (bss) exhibits lower levels of exploratory locomotion in a novel environment than wild type flies. In addition, the system was used to identify that the drug metformin, which is commonly used to treat type II diabetes, reduces the intensity of SLA in the BS mutants.

A Low-cost Method for Analyzing Seizure-like Activity and Movement in Drosophila

Using a webcam and a combination of free and inexpensive software programs, locomotive patterns in Drosophila melanogaster can be analyzed to detect differences in the speed, distance, and time of various motor activities.

在分析癫痫样活动和运动的一种低成本方法<em&gt;果蝇</em

Video tracking systems have been used widely to analyze Drosophila melanogaster movement and detect various abnormalities in locomotive behavior. While ...

A Simple Technique to Assay Locomotor Activity in Drosophila

Drosophila melanogaster is an ideal model organism for studying various diseases due to its abundance of advanced genetic manipulation techniques and diverse behavioral features. Identifying behavioral deficiency in animal models is a crucial measure of disease severity, for example, in neurodegenerative diseases where patients often experience impairments in motor function. However, with the availability of various systems to track and assess motor deficits in fly models, such as drug-treated or transgenic individuals, an economical and user-friendly system for precise evaluation from multiple angles is still lacking. A method based on the AnimalTracker application programming interface (API) is developed here, which is compatible with the Fiji image processing program, to systematically evaluate the movement activities of both adult and larval individuals from recorded video, thus allowing for the analysis of their tracking behavior. This method requires only a high-definition camera and a computer peripheral hardware integration to record and analyze behavior, making it an affordable and effective approach for screening fly models with transgenic or environmental behavioral deficiencies. Examples of behavioral tests using pharmacologically treated flies are given to show how the techniques can detect behavioral changes in both adult flies and larvae in a highly repeatable manner.

A Simple Technique to Assay Locomotor Activity in Drosophila

The present protocol assesses the locomotor activity of Drosophila by tracking and analyzing the movement of flies in a hand-made arena using open-source software Fiji, compatible with plugins to segment pixels of each frame based on high-definition video recording to calculate parameters of speed, distance, etc.

一种测定果蝇运动活性的简单技术

Drosophila melanogaster is an ideal model organism for studying various diseases due to its abundance of advanced genetic manipulation techniques and ...

行为学

Endurance Training Protocol and Longitudinal Performance Assays for Drosophila melanogaster

One of the most pressing problems facing modern medical researchers is the surging levels of obesity, with the consequent increase in associated disorders such as diabetes and cardiovascular disease 1-3. An important topic of research into these associated health problems involves the role of endurance exercise as a beneficial intervention.
Exercise training is an inexpensive, non-invasive intervention with several beneficial results, including reduction in excess body fat 4, increased insulin sensitivity in skeletal muscle 5, increased anti-inflammatory and antioxidative responses 6, and improved contractile capacity in cardiomyocytes 7. Low intensity exercise is known to increase mitochondrial activity and biogenesis in humans 8 and mice, with the transcriptional coactivator PGC1-&alpha; as an important intermediate 9,10. 
Despite the importance of exercise as a tool for combating several important age-related diseases, extensive longitudinal genetic studies have been impeded by the lack of an endurance training protocol for a short-lived genetic model species. The variety of genetic tools available for use with Drosophila, together with its short lifespan and inexpensive maintenance, make it an appealing model for further study of these genetic mechanisms. With this in mind we have developed a novel apparatus, known as the Power Tower, for large scale exercise-training in Drosophila melanogaster 11. The Power Tower utilizes the flies' instinctive negative geotaxis behavior to repetitively induce rapid climbing. Each time the machine lifts, then drops, the platform of flies, the flies are induced to climb. Flies continue to respond as long as the machine is in operation or until they become too fatigued to respond. Thus, the researcher can use this machine to provide simultaneous training to large numbers of age-matched and genetically identical flies. Additionally, we describe associated assays useful to track longitudinal progress of fly cohorts during training.

Endurance Training Protocol and Longitudinal Performance Assays for Drosophila melanogaster

We describe the first endurance training protocol for an important genetic model species, Drosophila melanogaster, and outline several assays to chart improvements in mobility following training.

果蝇的耐力训练协议和纵向性能检测

One of the most pressing problems facing modern medical researchers is the surging levels of obesity, with the consequent increase in associated disorders ...

生物学

An Improved Method for Accurate and Rapid Measurement of Flight Performance in Drosophila

Drosophila has proven to be a useful model system for analysis of behavior, including flight. The initial flight tester involved dropping flies into an oil-coated graduated cylinder; landing height provided a measure of flight performance by assessing how far flies will fall before producing enough thrust to make contact with the wall of the cylinder. Here we describe an updated version of the flight tester with four major improvements. First, we added a &#34;drop tube&#34; to ensure that all flies enter the flight cylinder at a similar velocity between trials, eliminating variability between users. Second, we replaced the oil coating with removable plastic sheets coated in Tangle-Trap, an adhesive designed to capture live insects. Third, we use a longer cylinder to enable more accurate discrimination of flight ability. Fourth we use a digital camera and imaging software to automate the scoring of flight performance. These improvements allow for the rapid, quantitative assessment of flight behavior, useful for large datasets and large-scale genetic screens.

An Improved Method for Accurate and Rapid Measurement of Flight Performance in Drosophila

Here we describe a method for rapid and accurate measurement of flight performance in Drosophila, enabling high-throughput screening.

在对飞行性能的准确，快速测定方法的改进<em&gt;果蝇</em

Drosophila has proven to be a useful model system for analysis of behavior, including flight. The initial flight tester involved dropping flies into an ...

Measurement of Metabolic Rate in Drosophila using Respirometry

Metabolic disorders are a frequent problem affecting human health. Therefore, understanding the mechanisms that regulate metabolism is a crucial scientific task. Many disease causing genes in humans have a fly homologue, making Drosophila a good model to study signaling pathways involved in the development of different disorders. Additionally, the tractability of Drosophila simplifies genetic screens to aid in identifying novel therapeutic targets that may regulate metabolism. In order to perform such a screen a simple and fast method to identify changes in the metabolic state of flies is necessary. In general, carbon dioxide production is a good indicator of substrate oxidation and energy expenditure providing information about metabolic state. In this protocol we introduce a simple method to measure CO2 output from flies. This technique can potentially aid in the identification of genetic perturbations affecting metabolic rate.

Measurement of Metabolic Rate in Drosophila using Respirometry

Metabolic disorders are among one of the most common diseases in humans. The genetically tractable model organism D. melanogaster can be used to identify novel genes that regulate metabolism. This paper describes a relatively simple method which allows studying the metabolic rate in flies by measuring their CO2 production.

代谢率的测量<em&gt;果蝇</em&gt;使用呼吸运动

Metabolic disorders are a frequent problem affecting human health. Therefore, understanding the mechanisms that regulate metabolism is a crucial ...

Measurement of Larval Activity in the Drosophila Activity Monitor

Drosophila larvae are used in many behavioral studies, yet a simple device for measuring basic parameters of larval activity has not been available. This protocol repurposes an instrument often used to measure adult activity, the TriKinetics Drosophila activity monitor (MB5 Multi-Beam Activity Monitor) to study larval activity. The instrument can monitor the movements of animals in 16 individual 8 cm glass assay tubes, using 17 infrared detection beams per tube. Logging software automatically saves data to a computer, recording parameters such as number of moves, times sensors were triggered, and animals&#8217; positions within the tubes. The data can then be analyzed to represent overall locomotion and/or position preference as well as other measurements. All data are easily accessible and compatible with basic graphing and data manipulation software. This protocol will discuss how to use the apparatus, how to operate the software and how to run a larval activity assay from start to finish.

Measurement of Larval Activity in the Drosophila Activity Monitor

This report describes a method for measuring Drosophila larval activity using the TriKinetics Drosophila Activity Monitor. The device employs infrared beams to detect movements of up to 16 individual animals. Data can be analyzed to represent motion parameters including rates and the positions of the animals within the assay chambers.

幼虫活动的测量<em&gt;果蝇</em&gt;活动监视器

Drosophila larvae are used in many behavioral studies, yet a simple device for measuring basic parameters of larval activity has not been available. This ...

Tracking Freely Walking Flies: A Method to Assess Locomotion in Drosophila

Source: Sun, M. and Chen, L. L. <a href="https://www-jove-com.bdigitaluss.remotexs.co/video/55602/" target="_blank">A Novel Method to Model Chronic Traumatic Encephalopathy in Drosophila</a>. J. Vis. Exp. (2017).
This video describes how to track freely walking flies to assess their general locomotion ability. The featured protocol demonstrates the assay&#39;s setup and data analysis using video tracking software.

追踪自由行走的果蝇:一种评估果蝇运动的方法

Source: Sun, M. and Chen, L. L. A Novel Method to Model Chronic Traumatic Encephalopathy in Drosophila. J. Vis. Exp. (2017).
This video describes how to ...

使用旋转运动量化系统测量果蝇中的运动水平 (满足要求)

摘要

探索更多视频

此视频中的章节

含量自发活动，研究昼夜节律和睡眠参数果蝇

TreadWheel:果蝇轻度诱导运动的间歇训练协议

在自发活动的测定

在分析癫痫样活动和运动的一种低成本方法

一种测定果蝇运动活性的简单技术

果蝇的耐力训练协议和纵向性能检测

在对飞行性能的准确，快速测定方法的改进

代谢率的测量

幼虫活动的测量

追踪自由行走的果蝇:一种评估果蝇运动的方法