title: The proteome of the locus ceruleus in Parkinson's disease: relevance to pathogenesis.
abstract: The locus ceruleus is among the earliest affected brain regions in Parkinson's disease (PD) showing Lewy body pathology and neuronal loss. To improve our understanding of the pathogenesis of PD, we performed the first proteomic analysis ever of post-mortem locus ceruleus tissue of six pathologically confirmed PD patients, and six age- and gender-matched non-neurological controls. In total 2495 proteins were identified, of which 87 proteins were differentially expressed in the locus ceruleus of PD patients compared with controls. The majority of these differentially expressed proteins are known to be involved in processes that have been implicated in the pathogenesis of PD previously, including mitochondrial dysfunction, oxidative stress, protein misfolding, cytoskeleton dysregulation and inflammation. Several individual proteins were identified that have hitherto not been associated with PD, such as regucalcin, which plays a role in maintaining intracellular calcium homeostasis, and isoform 1 of kinectin, which is involved in transport of cellular components along microtubules. In addition, pathway analysis suggests a pathogenetic role for aminoacyl-tRNA-biosynthesis. These findings indicate that the proteome of the locus ceruleus of PD patients and non-neurological controls provides data that are relevant to the pathogenesis of PD, reflecting both known and potentially novel pathogenetic pathways.
authors: Department of Anatomy and Neurosciences, Section Functional Neuroanatomy, Neuroscience Campus Amsterdam, VU University Medical Center Amsterdam, the Netherlands. karin.vandijk@vumc.nl
authors: Karin D
authors: KD
authors: van Dijk
authors: Henk W
authors: HW
authors: Berendse
authors: Benjamin
authors: B
authors: Drukarch
authors: Silvina A
authors: SA
authors: Fratantoni
authors: Thang V
authors: TV
authors: Pham
authors: Sander R
authors: SR
authors: Piersma
authors: Evelien
authors: E
authors: Huisman
authors: John J P
authors: JJ
authors: Brevé
authors: Henk J
authors: HJ
authors: Groenewegen
authors: Connie R
authors: CR
authors: Jimenez
authors: Wilma D J
authors: WD
authors: van de Berg
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D015153:Blotting, Western; D020552:Comet Assay; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D008125:Locus Coeruleus / Q000378:metabolism* / Q000503:physiopathology; D008297:Male; D010300:Parkinson Disease / Q000378:metabolism* / Q000503:physiopathology; D020543:Proteome / Q000032:analysis*; D053719:Tandem Mass Spectrometry
chemical_list: D020543:Proteome