NIH: Former NFL player Seau had brain disease

Star NFL linebacker Junior Seau -- just 43 years old when he took his own life last May -- suffered from chronic traumatic encephalopathy, a neurodegenerative brain disease that can follow multiple hits to the head, the National Institutes of Health said Thursday. Questions of CTE came up immediately after Seau's body was found, with a handgun nearby, in the bedroom of his home in Oceanside, California.

CTE can result in Alzheimer's-like symptoms such as dementia, memory loss, aggression and depression, but it can be diagnosed only after death.

Seau's family donated his brain to the National Institutes of Health for research, and Thursday the NIH released a statement saying "abnormalities were found that are consistent with a form of (CTE)."

According to the pathology report from the NIH, five researchers -- two NIH neuropathologists and three independent experts -- examined slides of Seau's brain and all confirmed that there were signs consistent with CTE. None of the researchers was aware of the identity of the brain when initially looking at it.

In a recent study, researchers found CTE in 34 of 35 deceased NFL players whose brains were donated by family members. Dr. Ann McKee, the director of neuropathology at VA Boston and a co-author of that study, says the CTE diagnosis in the Seau case was not unexpected.

"From what I've read about the symptoms (Seau) was experiencing the last couple of years -- the ones relayed by the family -- it is not surprising to me that he had this disease," said McKee, who was not involved in the Seau case.

"It doesn't sound like it was early CTE, that it was becoming quite widespread in the brain. And he was young at the time of death. It is another sad day to see another fairly well-established case of CTE."

A brain with CTE is riddled with dense clumps of a protein called tau. Under a microscope, tau appears as brown tangles similar to dementia. However, the Boston study showed this progressive, tau protein array in football players much too young for a dementia diagnosis, which typically occurs in people in their 70s or 80s.

What may be a surprise to some is that Seau was never diagnosed with a concussion in all the years he played football. That points to the bigger mysteries of the disease that scientists such as Dr. Julian Bailes, the co-director of the NorthShore Neurological Institute, hope to someday solve.

"It is not unprecedented that he didn't have a concussion history. That's part of the problem in figuring this out," Bailes said. "It seemed logical at first that it would be people with multiple concussions that would be at risk of CTE. As we've learned more, it was surprising that some of those at risk for CTE were players who did not have a history of concussion."

Source: http://www.wdsu.com/news/health/NIH-Former-NFL-player-Seau-had-brain-disease/-/9853288/18083498/-/ea4mhc/-/index.html?absolute=true

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