Hero and sidekick. Peanut butter and jelly. Thunder and lightning.
Glial fibrillary acidic protein (GFAP) and ubiquitin carboxyl-terminal hydrolase L1 (UCH-L1).
It’s a mouthful of a word pair, but it’s a unique one that opens the door to understanding concussion, sometimes called a mild traumatic brain injury or mTBI. From , GFAP and UCH-L1 are a reliable pair of biomarkers released into the bloodstream after a brain injury. From a broad perspective, biomarkers are , like blood pressure or amounts of a protein in the blood, and they .
Let's take a closer look at how this invisible couple impacts concussion assessment.
A Biomarkers Analogy
If you show up to the emergency room, hand on your heart and complaining of chest pain, you're likely getting a blood test. The test you receive will look at the levels for , which appears more in the blood after a heart attack. Healthcare professionals have had blood tests for the heart, liver and kidneys for some time, but not one for the brain. When looked at together, the GFAP and UCH-L1 biomarkers open the window to understanding concussions.
Exploring the use of biomarkers to better understand what is going on in the body began with the link between troponin and suspected heart attack. Although  as the standard of care, it did occur in 2007 – and the same could happen for GFAP and UCH-L1 for traumatic brain injuries in the future.
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