A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Impaired cognitive performance in Parkinson's disease is related to caudate dopaminergic hypofunction and hippocampal atrophy
Tekijät: Jokinen P, Bruck A, Aalto S, Forsback S, Parkkola R, Rinne JO
Kustantaja: ELSEVIER SCI LTD
Julkaisuvuosi: 2009
Journal: Parkinsonism and Related Disorders
Tietokannassa oleva lehden nimi: PARKINSONISM & RELATED DISORDERS
Lehden akronyymi: PARKINSONISM RELAT D
Vuosikerta: 15
Numero: 2
Aloitussivu: 88
Lopetussivu: 93
Sivujen määrä: 6
ISSN: 1353-8020
DOI: https://doi.org/10.1016/j.parkreldis.2008.03.005
Tiivistelmä
Frontal lobe dysfunction and other cognitive deficits have been described in Parkinson's disease (PD), which may lead to dementia. Both striatal dopaminergic deficiency and regional or global brain volume loss have been suggested to contribute to cognitive decline in PD. We therefore performed a neuropsychological evaluation, structural brain MRI and Fdopa PET in patients with PD and healthy elderly volunteers. PD patients had impaired cognitive performance in many neuropsychological tests compared to controls, not limited just to frontal lobe function tests. Caudate Fdopa correlated positively with performance in verbal (immediate and delayed) and visual memory. Patients with PD showed atrophy in the hippocampus and the prefrontal cortex and hippocampal atrophy was related to impaired memory. Our findings suggest that striatal dopaminergic depletion and global brain volume loss contribute to cognitive impairment in non-demented PD patients, but dysfunction of extra-striatal dopaminergic or non-dopaminergic systems probably plays a role especially in more generalized cognitive impairment. (C) 2008 Elsevier Ltd. All rights reserved.
Frontal lobe dysfunction and other cognitive deficits have been described in Parkinson's disease (PD), which may lead to dementia. Both striatal dopaminergic deficiency and regional or global brain volume loss have been suggested to contribute to cognitive decline in PD. We therefore performed a neuropsychological evaluation, structural brain MRI and Fdopa PET in patients with PD and healthy elderly volunteers. PD patients had impaired cognitive performance in many neuropsychological tests compared to controls, not limited just to frontal lobe function tests. Caudate Fdopa correlated positively with performance in verbal (immediate and delayed) and visual memory. Patients with PD showed atrophy in the hippocampus and the prefrontal cortex and hippocampal atrophy was related to impaired memory. Our findings suggest that striatal dopaminergic depletion and global brain volume loss contribute to cognitive impairment in non-demented PD patients, but dysfunction of extra-striatal dopaminergic or non-dopaminergic systems probably plays a role especially in more generalized cognitive impairment. (C) 2008 Elsevier Ltd. All rights reserved.
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