To assess possible differences in dopamine metabolism that could parallel disease progression in Parkinson's disease (PD), we measured dopamine (DA) and its metabolites in the cerebrospinal fluid (CSF) in PD patients at different stages of disease: de novo (DEN), advanced not showing dyskinesias (ADV), and advanced with dyskinesias (DYS). DA, homovanillic acid (HVA) and dihydroxyphenylacetic acid (DOPAC) were significantly higher in DEN patients compared with other groups. A negative exponential correlation related DA level and disease duration. The HVA/DA ratio was significantly higher in the ADV and DYS group than that found in DEN group. Our data show that disease progression produces an early large decay of DA levels, followed by a stabilization. On the contrary, a late change in DA turnover (increased HVA/DA ratio) is documented in patients with longer disease duration. Our results suggest that the appearance of dyskinesia may not be related to a further loss of DA terminals but to a different, abnormal, DA turnover.

Lunardi, G., Galati, S., Tropepi, D., Moschella, V., Brusa, L., Pierantozzi, M., et al. (2009). Correlation between changes in CSF dopamine turnover and development of dyskinesia in Parkinson's disease. PARKINSONISM & RELATED DISORDERS, 15(5), 383-389 [10.1016/j.parkreldis.2008.10.001].

Correlation between changes in CSF dopamine turnover and development of dyskinesia in Parkinson's disease

Galati S.;Tropepi D.;Pierantozzi M.;Stefani A.;Rossi S.;Stanzione P.;Pisani A.
2009

Abstract

To assess possible differences in dopamine metabolism that could parallel disease progression in Parkinson's disease (PD), we measured dopamine (DA) and its metabolites in the cerebrospinal fluid (CSF) in PD patients at different stages of disease: de novo (DEN), advanced not showing dyskinesias (ADV), and advanced with dyskinesias (DYS). DA, homovanillic acid (HVA) and dihydroxyphenylacetic acid (DOPAC) were significantly higher in DEN patients compared with other groups. A negative exponential correlation related DA level and disease duration. The HVA/DA ratio was significantly higher in the ADV and DYS group than that found in DEN group. Our data show that disease progression produces an early large decay of DA levels, followed by a stabilization. On the contrary, a late change in DA turnover (increased HVA/DA ratio) is documented in patients with longer disease duration. Our results suggest that the appearance of dyskinesia may not be related to a further loss of DA terminals but to a different, abnormal, DA turnover.
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore MED/26 - Neurologia
English
Con Impact Factor ISI
3,4-Dihydroxyphenylacetic Acid; Age of Onset; Aged; Disease Progression; Dopamine; Dyskinesias; Homovanillic Acid; Humans; Middle Aged; Parkinson Disease
Lunardi, G., Galati, S., Tropepi, D., Moschella, V., Brusa, L., Pierantozzi, M., et al. (2009). Correlation between changes in CSF dopamine turnover and development of dyskinesia in Parkinson's disease. PARKINSONISM & RELATED DISORDERS, 15(5), 383-389 [10.1016/j.parkreldis.2008.10.001].
Lunardi, G; Galati, S; Tropepi, D; Moschella, V; Brusa, L; Pierantozzi, M; Stefani, A; Rossi, S; Fornai, F; Fedele, E; Stanzione, P; Hainsworth, Ah; Pisani, A
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/195748
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