MUMBAI: Swedish scientists have discovered a biomarker test to predict how serious or how long it will take for a person to recover from brain injuries.
At present, it is difficult for doctors to say when a patient suffering from concussion will recover. But doctors from Sahlgrenska University Hospital in Molndal, Sweden, have found a way to test blood for a protein called total tau (T-tau), which is released when the brain is injured. The amount of T-tau is apparently the key to diagnosing a concussion and predicting when people can get back into the game,'' said the study which is published in last week's JAMA Neurology journal.
The study was conducted in 28 hockey players. "We have a biomarker [indicator] that is elevated in the blood of players with a concussion," said lead researcher Dr Pashtun Shahiml. The level of T-tau within the first hour after concussion correlates with the number of days you have symptoms. Concussion is a mild traumatic brain injury.
The researchers found that players who suffered a concussion had higher blood levels of T-tau compared with levels measured before the hockey season began. The highest levels of T-tau were seen in the first hour after a concussion and these levels declined over the next 12 hours, yet they were still elevated six days later.
"We can use this biomarker to both diagnose concussion and to monitor the course of concussion until the patient is free of symptoms," he said.
Shahim added that by watching the level of T-tau drop over time, it is possible to predict when symptoms such as dizziness, nausea, trouble concentrating, memory problems and headaches will disappear.
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