“Blood Protein Levels May Predict Epilepsy After Brain Injury”
In a recent study, researchers investigated whether measuring a specific protein in the blood, called phosphorylated neurofilament heavy chain (pNF-H), could help predict the development of posttraumatic epilepsy following a traumatic brain injury (TBI). This protein acts as a marker for nerve damage, and scientists wanted to see if its levels in the blood could indicate whether injured rats would experience epilepsy later on.
To conduct the study, the team collected blood samples from a total of 143 rats—some were healthy, some were control subjects, and the majority had experienced lateral fluid percussion injury, a type of TBI. They measured the concentration of pNF-H in the plasma 48 hours after the injury and then monitored the rats for seizures over the next six months. The results were pretty interesting: about 25% of the rats that suffered a TBI developed epilepsy, while the other 75% did not. Notably, the rats that went on to develop epilepsy had significantly higher levels of pNF-H in their blood compared to those that did not.
The researchers also found that the concentration of pNF-H was particularly effective at distinguishing between TBI rats with severe epilepsy (those having three or more seizures per month) and those with less severe outcomes. They calculated an area under the curve (AUC) value, which is a statistical measure used to evaluate the performance of a diagnostic test. The results showed that higher pNF-H levels could predict seizure clusters, indicating that this biomarker could be quite useful in a clinical setting.
Furthermore, the study highlighted an interesting link: higher levels of pNF-H were associated with poorer neurological function and more significant brain damage as seen in MRI scans. However, it’s worth noting that the levels of pNF-H did not correlate with the rats’ memory performance, as measured by a water maze test.
Overall, the findings suggest that measuring plasma pNF-H could be a promising way to predict which individuals might develop posttraumatic epilepsy with frequent seizures, paving the way for better monitoring and potentially more tailored treatments after a TBI.