BACKGROUND: Dementia is common in Parkinson's disease, but the underlying brain pathology is not yet fully understood. AIM: To examine the changes in the brain of patients with Parkinson's disease with mild cognitive impairment (MCI) and dementia, using structural magnetic resonance imaging. METHODS: Using voxel-based morphometry, the grey matter atrophy on brain images of patients with Parkinson's disease and dementia (PDD; n = 16) and Parkinson's disease without dementia (PDND; n = 20), and healthy elderly subjects (n = 20) was studied. In the PDND group, 12 subjects had normal cognitive status and 8 had MCI. Standardised rating scales for motor, cognitive and psychiatric symptoms were used. RESULTS: Widespread areas of cortical atrophy were found in patients with PDD compared with normal controls (in both temporal and frontal lobes and in the left parietal lobe). Grey matter reductions were found in frontal, parietal, limbic and temporal lobes in patients with PDD compared with those with PDND. In patients with PDND with MCI, areas of reduced grey matter in the left frontal and both temporal lobes were found. CONCLUSION: These findings show that dementia in Parkinson's disease is associated with structural neocortical changes in the brain, and that cognitive impairment in patients with PDND may be associated with structural changes in the brain. Further studies with larger groups of patients are needed to confirm these findings.
BACKGROUND:Dementia is common in Parkinson's disease, but the underlying brain pathology is not yet fully understood. AIM: To examine the changes in the brain of patients with Parkinson's disease with mild cognitive impairment (MCI) and dementia, using structural magnetic resonance imaging. METHODS: Using voxel-based morphometry, the grey matter atrophy on brain images of patients with Parkinson's disease and dementia (PDD; n = 16) and Parkinson's disease without dementia (PDND; n = 20), and healthy elderly subjects (n = 20) was studied. In the PDND group, 12 subjects had normal cognitive status and 8 had MCI. Standardised rating scales for motor, cognitive and psychiatric symptoms were used. RESULTS: Widespread areas of cortical atrophy were found in patients with PDD compared with normal controls (in both temporal and frontal lobes and in the left parietal lobe). Grey matter reductions were found in frontal, parietal, limbic and temporal lobes in patients with PDD compared with those with PDND. In patients with PDND with MCI, areas of reduced grey matter in the left frontal and both temporal lobes were found. CONCLUSION: These findings show that dementia in Parkinson's disease is associated with structural neocortical changes in the brain, and that cognitive impairment in patients with PDND may be associated with structural changes in the brain. Further studies with larger groups of patients are needed to confirm these findings.
Authors: D Aarsland; I Litvan; D Salmon; D Galasko; T Wentzel-Larsen; J P Larsen Journal: J Neurol Neurosurg Psychiatry Date: 2003-09 Impact factor: 10.154
Authors: Francesca Di Biasio; Nicola Vanacore; Alfonso Fasano; Nicola Modugno; Barbara Gandolfi; Francesco Lena; Giovanni Grillea; Sara Pietracupa; Giovanni Caranci; Stefano Ruggieri Journal: J Neural Transm (Vienna) Date: 2011-12-13 Impact factor: 3.575
Authors: Liana G Apostolova; Mona Beyer; Amity E Green; Kristy S Hwang; Jonathan H Morra; Yi-Yu Chou; Christina Avedissian; Dag Aarsland; Carmen C Janvin; Jan P Larsen; Jeffrey L Cummings; Paul M Thompson Journal: Mov Disord Date: 2010-04-30 Impact factor: 10.338
Authors: Yuko Koshimori; Barbara Segura; Leigh Christopher; Nancy Lobaugh; Sarah Duff-Canning; Romina Mizrahi; Clement Hamani; Anthony E Lang; Kelly Aminian; Sylvain Houle; Antonio P Strafella Journal: Brain Struct Funct Date: 2014-05-13 Impact factor: 3.270