Abstract
Parkinson's disease (PD) is among the most common neurological diseases and is best known for its adverse effects on brain regions that control motor function, resulting in tremor, rigidity, and gait abnormalities. Less well appreciated are the psychiatric symptoms experienced by many PD patients, including depression and memory loss, which do not respond well to currently available treatments for PD. Here, we describe functional effects of a common PD-linked mutation of leucine-rich repeat kinase 2 in the mouse hippocampus, an area of the brain that is responsible for encoding and retaining memories. By providing a potential mechanism for some of the cognitive symptoms produced by this mutation, our findings may lead to novel approaches for the treatment of nonmotor symptoms of PD.
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