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

쥐에서 외상성 뇌 손상 후 Caecum Microbiota에서 변경 을 조사

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Neuroscience

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JoVE Journal Neuroscience

Investigating Alterations in Caecum Microbiota After Traumatic Brain Injury in Mice

쥐에서 외상성 뇌 손상 후 Caecum Microbiota에서 변경 을 조사

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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.

Frequently Asked Questions

What are the advantages of using this TBI induction model?

The lateral fluid percussion method is relatively simple and efficient, facilitating controlled experiments to study TBI effects on the microbiome.

How is the brain injury induced in the study?

Anesthetized mice undergo cranial surgery, after which a lateral fluid percussion device administers a controlled injury.

What types of data are obtained from this study?

Data includes microbiome diversity and compositional changes analyzed through 16S rDNA sequencing.

How can this method be adapted for other research?

This protocol can be adapted to study other brain injuries or variations in microbiome analysis techniques.

What are key considerations when performing the surgical procedures?

Maintaining sterility and carefully manipulating tissues are crucial to avoid complications during the procedure.

여기에 제시된 프로토콜은 직감 미생물군유전체 분석을 위한 케이쿰 함량의 수집에 이어 측면 유체 타악기 장치를 사용하여 확산 외상성 뇌 손상을 유도하는 프로토콜이다.

동시성 및 두뇌와 창 자 microbiota 사이 라인 상호 작용은 알 수 없는 남아. 이 기술을 사용, 마우스에 외상성 뇌 손상 후 창 자 microbiota에 변경 검사할 수 있습니다. 이 기술의 주요 장점은 비교적 간단하고 효율적이라는 것입니다.

절차를 시연하는 것은 내 실험실에서 대학원생 인 웬동 유 (Wendong You)가 될 것입니다. 외상성 뇌 손상 유도의 경우 마취 된 마우스의 발가락 핀치에 대한 반응부족을 확인하고 동물의 눈에 연고를 적용하십시오. 면도 후, 적혈구평면에서 두피를 절개하기 전에 노출된 두피 피부를 70%에탄올로 소독합니다.

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