title: Nuclear localization of the 20S proteasome subunit in Parkinson's disease.
abstract: Considering the involvement of ubiquitin-proteasome system (UPS) in Parkinson's disease (PD), the aim of the present study was to determine the distribution of proteasomes in PD brains. Immunohistochemical studies showed localization of 20S proteasome in the nuclei of neurons of the putamen and substantia nigra of PD. In contrast, no nuclear staining was observed in the same areas of brains of controls. Our results suggest that nuclear localization of 20S proteasome seems to be associated with the pathogenesis of PD.
authors.affiliation: Department of Neurology, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan.
authors.forename: Atsuko
authors.initials: A
authors.lastname: Nakamura
authors.forename: Toshiaki
authors.initials: T
authors.lastname: Kitami
authors.forename: Hideo
authors.initials: H
authors.lastname: Mori
authors.forename: Yoshikuni
authors.initials: Y
authors.lastname: Mizuno
authors.forename: Nobutaka
authors.initials: N
authors.lastname: Hattori
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002451:Cell Compartmentation / Q000502:physiology; D002467:Cell Nucleus / Q000378:metabolism* / Q000473:pathology; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D016631:Lewy Bodies; D008297:Male; D008875:Middle Aged; D009474:Neurons / Q000378:metabolism* / Q000473:pathology; D010300:Parkinson Disease / Q000175:diagnosis / Q000378:metabolism* / Q000503:physiopathology; D046988:Proteasome Endopeptidase Complex / Q000378:metabolism*; D011699:Putamen / Q000378:metabolism* / Q000473:pathology / Q000503:physiopathology; D013378:Substantia Nigra / Q000378:metabolism* / Q000473:pathology / Q000503:physiopathology; D043222:Ubiquitin Thiolesterase / Q000378:metabolism; D044767:Ubiquitin-Protein Ligases / Q000378:metabolism; D051844:alpha-Synuclein / Q000378:metabolism
chemical_list: C482860:UCHL1 protein, human; D051844:alpha-Synuclein; D044767:Ubiquitin-Protein Ligases; C111567:parkin protein; D043222:Ubiquitin Thiolesterase; D046988:Proteasome Endopeptidase Complex