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Traumatic Brain Injury l: Introduction

Traumatic Brain Injury l: Introduction

DefinitionTraumatic brain injury, or TBI, is a disturbance of normal brain function induced by an external mechanical force, such as a direct blow to the head or a penetrating injury. It can affect both brain structure and function, producing a wide range of clinical outcomes. TBI is a heterogeneous condition, meaning its effects may differ based on the type, location, and severity of the injury.Basis of ClassificationTBI is classified based on severity, injury mechanism, or pathophysiology. In...

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Identification and Validation of Endoplasmic Reticulum Stress-Related Gene in Traumatic Brain Injury.

Gengshui Zhao¹, Yongqi Fu², Chao Yang³

¹Department of Neurosurgery, The People's Hospital of Hengshui City, Hengshui, 053000, Hebei, China. zhaogengshui@163.com.

Journal of Molecular Neuroscience : MN

|September 12, 2024

Summary

Endoplasmic reticulum stress (ERS) is crucial in traumatic brain injury (TBI). NFE2L2 gene activation protected neurons from ERS-induced apoptosis, offering a potential therapeutic target for TBI.

Keywords:

Apoptosis Bioinformatics Endoplasmic reticulum stress Traumatic brain injury

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Area of Science:

Neuroscience
Molecular Biology
Genetics

Background:

Endoplasmic reticulum stress (ERS) is implicated in the pathophysiology of traumatic brain injury (TBI).
Identifying key molecular players in ERS-related TBI is crucial for therapeutic development.

Purpose of the Study:

To identify and validate ERS-related genes associated with TBI using bioinformatics and in vitro experiments.
To investigate the role of the NFE2L2 gene and its encoded protein, Nrf2, in mitigating ERS-induced apoptosis in TBI.

Main Methods:

Bioinformatic analysis of 19 TBI and ERS-related genes from GeneCards and CTD databases.
Protein-protein interaction (PPI) network analysis using cytoHubba to identify hub genes, specifically NFE2L2.
In vitro cell experiments using tert-butylhydroquinone (tBHQ) to induce Nrf2 and assess its effect on ERS and apoptosis in a primary neuron injury model.

Main Results:

Enrichment analysis of identified genes indicated a primary link to apoptosis pathways.
NFE2L2 was identified as a central hub gene within the PPI network.
tBHQ pretreatment significantly reduced ERS and apoptosis-related protein expression in primary cultured neurons subjected to injury.

Conclusions:

The NFE2L2/Nrf2 pathway plays a protective role against endoplasmic reticulum stress-induced apoptosis in the context of traumatic brain injury.
These findings provide a theoretical basis for TBI treatment strategies targeting the NFE2L2/Nrf2 pathway.