Investigating Alterations in Caecum Microbiota After Traumatic Brain Injury in Mice

Liang Wen; Wendong You; Yadong Wang; Yuanrun Zhu; Hao Wang; Xiaofeng Yang

doi:10.3791/59410

JoVE Journal
Neuroscience

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JoVE Journal Neuroscience

Investigating Alterations in Caecum Microbiota After Traumatic Brain Injury in Mice

研究小鼠创伤性脑损伤后凯库姆微生物群的改动

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04:29 min

September 19, 2019

DOI: 10.3791/59410-v

Liang Wen*¹, Wendong You*¹, Yadong Wang*¹, Yuanrun Zhu¹, Hao Wang¹, Xiaofeng Yang¹

¹Emergency and Trauma Center, The International Medical Center, The First Affiliated Hospital, School of Medicine,Zhejiang University

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Overview

This study presents a protocol for inducing diffuse traumatic brain injury (TBI) using a lateral fluid percussion device in mice. Following injury, the study investigates changes in gut microbiota by collecting caecum contents for analysis. The approach aims to elucidate the interactions between brain injury and gut microbiota composition.

Key Study Components

Area of Science

Neuroscience
Microbiome analysis
Traumatic brain injury research

Background

Understanding the relationships between the brain and gut microbiota is critical in TBI research.
Current knowledge of how TBI affects gut microbiota is limited.
The use of mice as a model organism allows for controlled experimental conditions.

Purpose of Study

To develop a reliable protocol for inducing TBI and analyzing subsequent changes in the gut microbiome.
To investigate potential correlations between neurological injury and gut microbiota diversity.
To provide insights into the impacts of TBI on overall health and microbiome interactions.

Methods Used

A lateral fluid percussion device was utilized to induce TBI in anesthetized mice.
Careful surgical procedures were undertaken, including skull penetration and cannula implantation.
Post-injury, caecum contents were collected for microbiome analysis and stored appropriately.
16S rDNA sequencing was employed to determine changes in microbiota diversity and composition.

Main Results

Analysis indicated reduced diversity in caecum microbiota within three days post-TBI.
Non-metric multidimensional scaling demonstrated significant shifts in microbiota composition following injury.
The study highlights the need for caution when handling tissues and maintaining sterile conditions.

Conclusions

This study establishes a methodology for exploring the gut-brain axis in the context of TBI.
Findings suggest that TBI may disrupt gut microbiota, which could have implications for recovery.
Enhancement of knowledge regarding gut-brain interactions could inform future therapeutic strategies for TBI.