Damage limitation

 作者:伍掊潆     |      日期:2019-03-07 04:04:21
By Alison Motluk THE devastating effects of strokes and epileptic seizures could soon be minimised by an oral vaccine. Just as children are routinely immunised against polio and diphtheria, so adults might be vaccinated in middle age to protect them from brain damage, say researchers in New Zealand and the US. Strokes and seizures trigger a cascade of events that lead to brain damage. During a stroke, the region around the injury becomes awash with the neurotransmitter glutamate. This in turn unleashes high levels of calcium, which kills brain cells. Scientists have tried to interrupt this cascade with drugs,