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Dadun > Depósito Académico > CIMA (Centro de Investigación Médica Aplicada) > Área de Neurociencias > Neuroanatomía ganglios basales > DA - CIMA - Neurociencias - Neuroanatomía ganglios basales - Artículos de Revista >

Dopamine transporter glycosylation correlates with the vulnerability of midbrain dopaminergic cells in Parkinson's disease
Authors: Afonso-Oramas, D. (D.)
Cruz-Muros, I. (I.)
Alvarez-de-la-Rosa, D. (D.)
Abreu, P. (Pedro)
Giraldez, T. (T)
Castro-Hernandez, J. (J.)
Salas-Hernandez, J. (Josmar)
Lanciego, J.L. (José Luis)
Rodriguez, M. (Manuel)
Gonzalez-Hernandez, T. (T)
Keywords: Parkinson's disease
Pathogenesis
Dopamine transporter
Glycosylation
Differential vulnerability
Issue Date: 2009
Publisher: Elsevier
Publisher version: http://www.sciencedirect.com/science/article/pii/S0969996109002435
ISSN: 1095-953X
Citation: Afonso-Oramas D, Cruz-Muros I, Alvarez de la Rosa D, Abreu P, Giraldez T, Castro-Hernandez J, et al. Dopamine transporter glycosylation correlates with the vulnerability of midbrain dopaminergic cells in Parkinson's disease. Neurobiol Dis 2009 Dec;36(3):494-508.
Abstract
The dopamine transporter (DAT) is a membrane glycoprotein responsible for dopamine (DA) uptake, which has been involved in the degeneration of DA cells in Parkinson's disease (PD). Given that DAT activity depends on its glycosylation status and membrane expression, and that not all midbrain DA cells show the same susceptibility to degeneration in PD, we have investigated a possible relationship between DAT glycosylation and function and the differential vulnerability of DA cells. Glycosylated DAT expression, DA uptake, and DAT V(max) were significantly higher in terminals of nigrostriatal neurons than in those of mesolimbic neurons. No differences were found in non-glycosylated DAT expression and DAT K(m), and DA uptake differences disappeared after deglycosylation of nigrostriatal synaptosomes. The expression pattern of glycosylated DAT in the human midbrain and striatum showed a close anatomical relationship with DA degeneration in parkinsonian patients. This relationship was confirmed in rodent and monkey models of PD, and in HEK cells expressing the wild-type and a partially deglycosylated DAT form. These results strongly suggest that DAT glycosylation is involved in the differential vulnerability of midbrain DA cells in PD.
Permanent link: http://hdl.handle.net/10171/20120
Appears in Collections:DA - Ciencias - HAP - Artículos de revista
DA - CIMA - Neurociencias - Neuroanatomía ganglios basales - Artículos de Revista

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