Antibiotics could save nerves

Penicillin and its family of related antibiotics may soon have a new use: protecting nerve cells from chemical damage.

Neurotransmitters, such as glutamate, excite neurons in the brain so that electric signals can pass from one neuron to the next. However, too much glutamate outside neurons can overstimulate and kill nerves, a factor in amyotrophic lateral sclerosis (ALS) and some other diseases.