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Understanding sporadic cases of age-dependent neurodegenerative diseases such as parkinsonism requires the evaluation of potential environmental factors. Amyotrophic lateral sclerosis-parkinsonism dementia complex (ALS-PDC), a neurological disorder in which features of parkinsonism are present and
Repeated dietary consumption of the neurotoxic amino acid beta-N-methylamino-L-alanine (BMAA), found in the seeds of Cycas circinalis, has been postulated as causing both amyotrophic lateral sclerosis (ALS) and the parkinsonism-dementia syndrome (PD) that were formerly very prevalent among the
Parkinson's disease (PD) is classically defined as a motor disorder resulting from decreased dopamine production in the basal ganglia circuit. In an attempt to better diagnose and treat PD before the onset of severe motor dysfunction, recent attention has focused on the early, non-motor symptoms,
OBJECTIVE
Exposure to a number of drugs, chemicals, or environmental factors can cause parkinsonism. Epidemiologic evidence supports a causal link between the consumption of flour made from the washed seeds of the plant Cycas micronesica by the Chamorro population of Guam and the development of