Human Gene Set: KEGG_PARKINSONS_DISEASE


Standard name KEGG_PARKINSONS_DISEASE
Systematic name M7272
Brief description Parkinson's disease
Full description or abstract Parkinson's disease (PD) is a progressive neurodegenerative movement disorder that results primarily from the death of dopaminergic neurons in the substantia nigra. Mutations in alpha-synuclein, UCHL1 (a ubiquitin carboxy-terminal hydrolase L1), parkin, DJ1 (a parkin-associated protein involved with oxidative stress), and PINK1 (a putative serine threonine kinase) are known to cause early-onset PD. Mutations or altered expression of these proteins contributes to PD pathogenesis through common mechanisms that result in proteasome dysfunction, mitochondrial impairment, and oxidative stress. Point mutations in alpha-synuclein and the recently described Iowan functional duplication of alpha-synuclein lead to excessive intracellular accumulation and protofibril formation. Decrease in the amount of soluble alpha-synuclein tends to increase free cytoplasmic dopamine and the formation of reactive oxygen species (ROS). Indeed, formation of protofibrils or aggregates and Lewy bodies (LBs) diminishes the availability of the physiological forms of alpha-synuclein, favoring an increase in TH (tyrosine hydroxylase) and DAT (dopamine transporter), but diminishes vesicles formation and neuronal plasticity. Modification of parkin and UCHL1 are associated with the ubiquitin-proteasome system pathway and may increase proteotoxic stress. Mutations in parkin, DJ1, and PINK1 may alter mitochondiral activity, potentially impairing proteasomal function. Environmental toxins such as N-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) and rotenone can cause mitochondrial dysfunction and oxidative stress.
Collection C2: Curated
      CP: Canonical Pathways
            CP:KEGG_LEGACY: KEGG Legacy Pathways
Source publication  
Exact source hsa05012
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External links http://www.genome.jp/kegg/pathway/hsa/hsa05012.html
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Source species Homo sapiens
Contributed by KEGG (Kyoto Encyclopedia of Genes and Genomes)
Source platform or
identifier namespace		 Human_NCBI_Gene_ID
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