This article by ScienceDaily sums it up pretty well. Link
Author Kun Ping Lu, MD, PhD, Chief of the Division of Translational Therapeutics in the Department of Medicine at BIDMC and Professor of Medicine at Harvard Medical School (HMS), states "Our study shows that an early neurodegenerative process induced by the toxic tau protein can begin just hours after a traumatic brain injury. In both cell models of stress and in mouse models simulating sport- and military-related TBI, the production of this pathogenic protein, called cis P-tau, disrupts normal neurological functioning, spreads to other neurons and leads to widespread neuronal death.
We have developed a potent monoclonal antibody that can prevent the onset of widespread neurodegeneration by identifying and neutralizing this toxic protein and restoring neurons' structural and functional abilities."
Whether or not this research translates into effective interventions, there's still typically the caveat of new treatments taking years to receive FDA approval. Fortunately, though, that's a topic which is receiving some attention -- Kate Upton's Uncle Fred actually proposed a bill to congress that, if passed, would accelerate the process.