Parkinson DiseaseDuodenoscopyCrohn Diseasealpha-SynucleinAntiparkinson AgentsParkinsonian DisordersLevodopaGlucosylceramidaseParkinson Disease, SecondaryLewy BodiesSubstantia NigraDeep Brain StimulationDopamine1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridineDopaminergic NeuronsSubthalamic NucleusMultiple System AtrophyLewy Body DiseaseGait Disorders, NeurologicOxidopaminePostural BalanceMPTP PoisoningNeurodegenerative DiseasesDance TherapyPutamenSupranuclear Palsy, ProgressiveUbiquitin-Protein LigasesEssential TremorPedunculopontine Tegmental NucleusGaitBrainNeuronsREM Sleep Behavior DisorderGaucher DiseaseTyrosine 3-MonooxygenasePergolideDementiaOncogene ProteinsHypokinesiabeta-SynucleinNerve DegenerationCorpus StriatumCarbidopaGenetic Predisposition to DiseaseAge of OnsetGlobus PallidusManebMutationSeverity of Illness IndexMovement DisordersMesencephalonNeuropsychological TestsCase-Control StudiesMitochondriaSynucleins1-Methyl-4-phenylpyridiniumNeuroprotective AgentsTropanesDopamine Plasma Membrane Transport ProteinsDisease Models, AnimalPositron-Emission TomographyDyskinesiasApathyOlfaction DisordersAlzheimer DiseaseRisk FactorsSleep Arousal DisordersCognition DisordersBenzothiazolesAccidental FallsPrimary DysautonomiasGenetic TestingPostmortem Changestau ProteinsDopamine AgentsAutophagyRotenoneDyskinesia, Drug-InducedDopamine AgonistsManganese PoisoningQuestionnairesPure Autonomic FailureCohort StudiesParaquatGenome-Wide Association StudyNeurologic ExaminationReproducibility of ResultsTime FactorsAdrenergic AgentsAnalysis of VarianceBasal GangliaPemolineSelenoprotein WPolymorphism, Single NucleotideNerve Tissue ProteinsMotor Skills3,4-Dihydroxyphenylacetic AcidReality TherapySweat Gland DiseasesOxidative Stress