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Biology
自由移动小鼠的简单连续血糖监测
自由移动小鼠的简单连续血糖监测
JoVE Journal
Biology
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JoVE Journal Biology
Simple Continuous Glucose Monitoring in Freely Moving Mice

自由移动小鼠的简单连续血糖监测

Full Text
7,908 Views
03:25 min
February 24, 2023

DOI: 10.3791/64743-v

Doron Kleiman1, Mika Littor1,2, Mahmoud Nawas3, Rachel Ben-Haroush Schyr1, Danny Ben-Zvi1

1Department of Developmental Biology and Cancer Research, Institute of Medical Research Israel-Canada,The Hebrew University-Hadassah Medical School, 2Department of Military Medicine and “Tzameret”, Faculty of Medicine,Hebrew University of Jerusalem, and Medical Corps, Israel Defense Forces, 3Department of Surgery,Hadassah Medical Center-Ein Kerem Campus

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Please note that some of the translations on this page are AI generated. Click here for the English version.

Overview

This study presents a straightforward method for implanting a commercial continuous glucose monitor (CGM) in mice to track glucose levels. The technique offers significant advantages, eliminating the need for complex microsurgery or bleeding, thus facilitating studies in obesity and diabetes models.

Key Study Components

Research Area

  • Diabetes research
  • Metabolic phenotype identification
  • Glucose monitoring in animal models

Background

  • Importance of monitoring glucose levels in obesity and diabetes research
  • Challenges associated with traditional surgical approaches
  • Need for effective methods to explore glucose management phenotypes

Methods Used

  • The procedure for inserting a CGM cannula
  • Mice as the biological model system
  • Utilization of suture techniques and sensor activation

Main Results

  • The method successfully secured the CGM cannula for extended monitoring
  • Data collected revealed new insights into metabolic phenotypes
  • Demonstrated feasibility and efficiency in data acquisition from mice

Conclusions

  • The study illustrates a reliable protocol for glucose monitoring in mice
  • This method contributes to advancing research in metabolic disorders

Frequently Asked Questions

What is the main advantage of this glucose monitoring method?
It simplifies the monitoring process and eliminates the need for invasive surgery or bleeding, making it less stressful for the mice.
How long can the CGM monitor glucose levels?
The method allows for continuous data collection, with effective monitoring over multiple days, as demonstrated in a three-day data collection period.
What biological models can benefit from this technique?
The technique is particularly useful in mouse models of obesity and diabetes, aiding in the identification of glucose management phenotypes.
What preparations are necessary before implanting the CGM?
It involves shaving the midline of the mouse's back, using depilatory cream, and making a small incision for cannula placement.
Are there any specific challenges when implementing this method?
The critical step is the careful insertion of the cannula and securing it properly to ensure it remains in place during the monitoring period.
Can the data collection parameters be adjusted?
Yes, the scripts provided allow modulation of various parameters during data analysis.
What type of data does this method produce?
The method produces continuous glucose monitoring data, which can reveal metabolic insights in mouse models.

在这里,我们描述了一种简单的方法,将专为患者设计的商业连续血糖监测仪植入小鼠,并提供脚本来分析结果。

我们的协议提供了一种简单廉价的方法来监测小鼠的葡萄糖水平。该技术的主要优点是它不需要具有挑战性的显微手术,并且不涉及出血或处理小鼠。该方法可用于鉴定肥胖和糖尿病小鼠模型中难以捉摸的葡萄糖管理表型。

在尝试此方案时,最关键的步骤是将套管插入皮肤下,并收紧内部缝合线以保持套管就位。开始剃除麻醉小鼠背部的中线,并使用脱毛膏以确保完全脱毛。打开并加载传感器。

然后将传感器安装到传感器安装设备上,露出传感器的胶带和套管侧。套管从针头上空无。将两个5-0锥点缝合到套管两侧的胶带上。

对于背侧皮肤准备,使用锋利的剪刀在脊柱上方剃光区域的中心做一个两毫米的切口。在皮肤下短暂插入具有钝边的小镊子,形成一个小的皮下袋,以便套管可以很容易地插入口袋。将缝合线穿过切口两侧的皮肤。

插入传感器时,请将传感器从传感器安装装置上完全取下,并用镊子握住传感器,以防止周围的胶带粘在自身上。小心地将套管插入皮下袋。拉动两侧的缝合线,然后拧紧并系好它们,将传感器牢固地固定到位。

一旦胶带随着时间的推移松动,这将防止套管从皮下袋中滑出,切断缝合线的末端并丢弃它们。在传感器周围贴上胶带,并在传感器周围缝合八条不连续的缝合线,将传感器的边界贴在皮肤上。激活传感器。

插入套管并成功激活 CGM 后,使用接收器收集数据。此处显示了使用提供的代码从单个鼠标获得的三天原始输出数据。轴参数和所有其他参数都可以在代码中调制。

为了清楚起见,这里显示了三天的数据。制作一个皮下口袋并增加一些缝合线可以使传感器的套管在原位停留更长时间。使用该技术获得的连续数据使我们能够发现特定小鼠品系中难以捉摸的代谢表型。

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