文摘
Parkinson's disease (PD) is characterized by loss of locus coeruleus (LC) neurons. LC lesioning occurs earlier and to greater extent than that of the substantia nigra. There is a solid link between an altered LC-norepinephrine (NE) system and dementia. Peripheral/central MHPG, NE's main metabolite, may serve as an early marker for PD. Therapeutic strategies enhancing NE signaling may hold great potential to treat PD.