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Updated: May 2, 2026
05:30
Controlled Cortical Impact Model for Traumatic Brain Injury
Published on: August 5, 2014
28.8K
Calpain in Traumatic Brain Injury: From Cinderella to Central Player.
Carla Schallerer1,2, Stephan Neuschmid1,2, Barbara E Ehrlich2
1School of Medicine and Health, Technical University of Munich, 81675 Munich, Germany.
Cells
|August 27, 2025
Summary
Calpain, a key enzyme in Traumatic Brain Injury (TBI) pathology, drives neurodegeneration by cleaving vital proteins. New calpain inhibitors and biomarkers show promise for TBI treatment and diagnosis.
Area of Science:
- Neuroscience
- Biochemistry
- Pathology
Background:
- Traumatic Brain Injury (TBI) is a significant cause of death and disability worldwide.
- Secondary injury cascades, including calcium dysregulation and protease activation, exacerbate initial trauma.
- Calpain, a calcium-dependent protease, plays a central role in TBI-induced cellular damage.
Purpose of the Study:
- To review the role of calpain in TBI pathology.
- To discuss calpain substrates and their functions in neuronal injury.
- To explore novel therapeutic strategies and biomarkers targeting calpain in TBI.
Main Methods:
- Review of molecular, preclinical, and clinical data on calpain in TBI.
- Analysis of spatial and temporal calpain activation patterns post-injury.
- Assessment of calpain substrates and their roles in neurodegeneration.
Main Results:
- Calpain activation leads to cleavage of numerous substrates, affecting cytoskeletal integrity, synaptic function, and calcium homeostasis.
- Calpain-2 selective inhibitors demonstrate preclinical efficacy.
- Calpain-cleaved protein fragments (e.g., SBDP145, SNTF) are emerging as potential TBI biomarkers.
Conclusions:
- Calpain is a critical mediator of TBI, making it a promising therapeutic target.
- Next-generation calpain inhibitors offer potential for TBI treatment.
- Calpain-cleaved fragments show potential as diagnostic and prognostic biomarkers for TBI.
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