By checking the blood for plasma metabolic biomarkers, the scientists can classify acute mild traumatic brain injury from other head injuries more accurately. The findings of this study are published in the journal of PLOS One.
Six specific small molecules from blood plasma were discovered in a group of college athletes who had been diagnosed with concussions. When these molecules were assessed, their combined presence accurately predicted whether teammates had sustained a mTBI or not. This suggests that these small molecules, and possibly others, might be clinically relevant biomarkers of mTBI. The same six biomarkers were then tested in a separate group of individuals, without and with mTBI, and the results replicated the athlete findings.
Although the results are encouraging, the authors report limitations to their study and recommend additional investigations related to these and other mTBI biomarkers in blood that will further clarify their utility in clinical management.
An objective biomarker of mTBI is not yet available to healthcare providers, coaches and trainers, and military commanders and combat medics. Such a diagnostic test might revolutionize the management of civilian and military concussions, including strategies to avoid post-concussive complications and more severe consequences, such as chronic traumatic encephalopathy. Researchers at UCI are helping advance technologies and therapeutic approaches that may benefit all societies, but are directly relevant to their local populations.
The estimated 40 million individuals worldwide diagnosed with mTBI likely represent a gross underestimation of those actually sustaining such injuries. Clinical practitioners require a relevant and reliable, minimally invasive, objective diagnostic test to determine high versus the low probability of mTBI in a timely manner.
Fiandaca said there is a clear need to improve diagnostic capabilities, which could reduce underreporting of mTBI and allow more appropriate care to be delivered to concussed individuals. Falls represent the most common cause associated with mTBI among civilians in the United States and around the world.
In the U.S., sport-related mTBI produces up to 3.8 million documented injuries per year. Changes in warfare practices in the last two decades have elevated blast (i.e., explosive) injuries to the primary cause for mTBI in the US active duty military. Between 2000-2016 approximately 82% of all military TBI fell into this category.
Although current technologies for defining the discovered small molecules in today's publication lack the rapid, point-of-care platforms being developed for other measures, the study authors anticipate a growing technological momentum to develop such novel platforms resulting from this and similar investigations.