title: Polymorphisms of dopamine receptor and transporter genes and Parkinson's disease.
abstract: Disturbances of the dopamine system are involved in the pathogenesis of idiopathic Parkinson's disease (PD). Although genetic factors may play a role in the etiology of PD, there is little direct evidence implicating a specific gene. We conducted a study to test the hypothesis that allelic variations of the dopamine receptors (D2, D3, D4) and the dopamine transporter (DAT) contribute to the susceptibility to PD. Association analyses of 70 Japanese PD patients and the same number of age-matched controls did not reveal any association between alleles of the D2, D3 or D4 receptor genes or the DAT gene and PD. Thus, our results suggest that factor(s) other than allelic variations of these key proteins in the dopamine system contribute to the susceptibility to PD.
authors.affiliation: National Institute on Alcoholism, Kurihama National Hospital, Yokosuka, Kanagawa, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Higuchi
authors.forename: T
authors.initials: T
authors.lastname: Muramatsu
authors.forename: H
authors.initials: H
authors.lastname: Arai
authors.forename: M
authors.initials: M
authors.lastname: Hayashida
authors.forename: H
authors.initials: H
authors.lastname: Sasaki
authors.forename: J Q
authors.initials: JQ
authors.lastname: Trojanowski
mesh_terms: D000368:Aged; D000483:Alleles; D002352:Carrier Proteins / Q000235:genetics*; D050483:Dopamine Plasma Membrane Transport Proteins; D005819:Genetic Markers; D005838:Genotype; D006801:Humans; D008562:Membrane Glycoproteins; D026901:Membrane Transport Proteins; D008875:Middle Aged; D018598:Minisatellite Repeats; D009419:Nerve Tissue Proteins; D010300:Parkinson Disease / Q000235:genetics*; D011110:Polymorphism, Genetic; D011954:Receptors, Dopamine / Q000235:genetics*; D017448:Receptors, Dopamine D2 / Q000235:genetics*; D050637:Receptors, Dopamine D3; D050638:Receptors, Dopamine D4
chemical_list: D002352:Carrier Proteins; C493593:DRD3 protein, human; C493599:DRD4 protein, human; D050483:Dopamine Plasma Membrane Transport Proteins; D005819:Genetic Markers; D008562:Membrane Glycoproteins; D026901:Membrane Transport Proteins; D009419:Nerve Tissue Proteins; D011954:Receptors, Dopamine; D017448:Receptors, Dopamine D2; D050637:Receptors, Dopamine D3; C493214:SLC6A3 protein, human; D050638:Receptors, Dopamine D4