Serum microRNAs associated with concussion in football players

Area of Science:

• Neuroscience
• Molecular Biology
• Sports Medicine

Background:

• Mild traumatic brain injury (concussion) is prevalent in sports like football, with concerns about long-term effects like chronic traumatic encephalopathy (CTE).
• Identifying reliable biomarkers for early diagnosis and monitoring of neuronal injury following concussion is a critical research priority.
• MicroRNAs (miRNAs), stable molecules in biological fluids, show promise as biomarkers for neurological conditions.

Purpose of the Study:

• To explore changes in serum microRNA expression in collegiate football players throughout a season.
• To identify a microRNA signature capable of distinguishing concussed players from non-concussed controls.
• To investigate microRNAs associated with acute concussion and those with persistent changes post-injury.

Main Methods:

• Serum samples were collected from collegiate football players during a full practice and game season.
• Expression levels of selected microRNAs were analyzed.
• Statistical methods were employed to identify significant differences and correlations.

Main Results:

• A distinct microRNA signature was identified that differentiates players with concussions from those without, demonstrating good diagnostic potential.
• Specific microRNAs (let-7c-5p, miR-16-5p, miR-181c-5p, miR-146a-5p, miR-154-5p, miR-431-5p, miR-151a-5p, miR-181d-5p, miR-487b-3p, miR-377-3p, miR-17-5p, miR-22-3p, miR-126-5p) were associated with the acute phase of concussion.
• Two microRNAs (miR-17-5p and miR-22-3p) showed persistent changes up to four months after concussion.

Conclusions:

• Serum microRNA profiles can serve as potential biomarkers for detecting concussions in athletes.
• The identified microRNA signature offers a promising avenue for early diagnosis and monitoring of sport-related brain injuries.
• Further research into these microRNAs could lead to improved clinical management of concussions.