# Molecular characterization of a rat model of chronic mild traumatic brain injury

> **NIH VA IK2** · VETERANS HEALTH ADMINISTRATION · 2020 · —

## Abstract

The proposed research will use a personalized precision medicine approach to establish a preclinical model of
chronic repetitive mild traumatic brain injury (rmTBI). The first objective of the proposed research is the
elucidation of the blood molecular signature for chronic rat rmTBI. The second objective is to test whether
administration of the neuroprotective agent neuregulin-1 (NRG-1) improves behavioral performance in this
model. This is highly relevant because a significant military and veteran population exists that experiences
persistent symptoms chronically following mTBI/concussion. The Next Generation Sequencing (NGS)
technique, RNA-Seq, can identify characteristic expression patterns of exons, or a molecular signature, in
blood samples drawn from stroke and TBI patients that can distinguish the injured patients from controls. The
proposed study will employ RNA-Seq analysis in the development of an experimental animal model that will
allow for control of model parameters, reducing the sample size, compared to human studies, needed to
conclusively identify blood molecular signatures. This represents a step towards the development of a
diagnostic tool that could be used to objectively identify patients who suffered rmTBI, resulting more targeted
treatment. A significant benefit of this preclinical model is that it will support testing of experimental therapies,
giving valuable functional and blood molecular information in return. This proposal includes an initial
therapeutic trial with NRG-1. NRG-1 has the additional ability to reduce brain inflammation which could
address the issue of persistent inflammation that has been demonstrated in chronically injured brains. This
could also contribute to the improvement of behavioral outcomes.

## Key facts

- **NIH application ID:** 9976341
- **Project number:** 5IK2RX002488-04
- **Recipient organization:** VETERANS HEALTH ADMINISTRATION
- **Principal Investigator:** TODD E WHITE
- **Activity code:** IK2 (R01, R21, SBIR, etc.)
- **Funding institute:** VA
- **Fiscal year:** 2020
- **Award amount:** —
- **Award type:** 5
- **Project period:** 2017-04-01 → 2022-03-31

## Primary source

NIH RePORTER: https://reporter.nih.gov/project-details/9976341

## Citation

> US National Institutes of Health, RePORTER application 9976341, Molecular characterization of a rat model of chronic mild traumatic brain injury (5IK2RX002488-04). Retrieved via AI Analytics 2026-05-22 from https://api.ai-analytics.org/grant/nih/9976341. Licensed CC0.

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