α-Synuclein levels are elevated in cerebrospinal fluid following traumatic brain injury in infants and children: the effect of therapeutic hypothermia.

Summary: When children suffer severe traumatic brain injuries (TBI), a protein called $\alpha$-synuclein—normally found inside healthy nerve cells—leaks into the spinal fluid, signaling damage to the brain's energy centers. A study of 47 infants and children revealed that those with severe head trauma had significantly elevated levels of this protein compared to healthy children, with levels spiking highest four to six days after injury. Researchers found that children treated with therapeutic hypothermia (cooling the body to 32-33°C) had significantly lower levels of this injury marker compared to those kept at normal body temperature. The study also noted that protein levels were highest in toddlers under four years old, girls, and victims of non-accidental trauma (abuse). While cooling successfully reduced the release of this stress protein, further research is needed to see if this reduction leads to better long-term recovery.