Parkinson's: Neurons Destroyed By Three Simultaneous Strikes

In a study that reveals the clearest picture to date of neuron death in Parkinson's disease, researchers have found that a trio of culprits acting in concert is responsible for killing the brain cells. The study showed that three molecules -- the neurotransmitter dopamine, a calcium channel, and a protein called alpha-synuclein -- act together to kill the neurons. A new theory of Parkinson's disease gives researchers fresh ideas for treatments.

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