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Estrogen improves Parkinson’s disease symptoms

Brain-selective estrogen treatment improves the symptoms of Parkinson’s disease in male mice, according to new research published in JNeurosci. These findings may help explain the sex differences in Parkinson’s disease and could lead to estrogen-based treatments.

Parkinson’s disease is characterized by the death of neurons involved in movement, which may be partially caused by gene mutations for the protein α-synuclein. The mutated, shorter form of the protein clusters in neurons, resulting in their death, while the longer form resists clumping.

Estrogen is thought to protect movement neurons from Parkinson’s disease, but how is unknown. Since the patients more susceptible to Parkinson’s disease—men and post-menopausal women—have low estrogen levels, estrogen treatment might be an effective way to delay and reduce symptoms.

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