Journal
BRAIN PATHOLOGY
Volume 25, Issue 4, Pages 401-408Publisher
WILEY
DOI: 10.1111/bpa.12182
Keywords
Alzheimer's disease; cognitive decline; dementia with Lewy bodies; Lewy body dementia; Parkinson's disease dementia
Categories
Funding
- Alzheimer's Society UK
- BUPA Foundation
- Dunhill Medical Trust [R173/1110]
- UK Medical Research Council
- Alzheimer's Society
- Alzheimer's Research UK
- National Medical Research Council [NMRC/CG/NUHS/2010, NMRC/CSA/032/2011]
- MRC [G0400074, G0502157, G0900652, MR/L022656/1, G1100540, MR/L016451/1, G1100695] Funding Source: UKRI
- Alzheimer's Society [136] Funding Source: researchfish
- Medical Research Council [MR/L022656/1, MR/L016451/1, G0502157, G1100540, G1100695, G0900652, G0400074] Funding Source: researchfish
- The Dunhill Medical Trust [R173/1110] Funding Source: researchfish
Ask authors/readers for more resources
Dementia with Lewy bodies (DLB) and Parkinson's disease dementia (PDD) are characterized by the presence of -synuclein-containing Lewy bodies and Lewy neurites. However, both dementias also show variable degrees of Alzheimer's disease (AD) pathology (senile plaques and neurofibrillary tangles), particularly in areas of the cortex associated with higher cognitive functions. This study investigates the contribution of the individual and combined pathologies in determining the rate of cognitive decline. Cortical -synuclein, phosphorylated tau (phosphotau) and A plaque pathology in 34 PDD and 55 DLB patients was assessed semi-quantitatively in four regions of the neocortex. The decline in cognition, assessed by Mini Mental State Examination, correlated positively with the cortical -synuclein load. Patients also had varying degrees of senile A plaque and phosphotau pathology. Regression analyses pointed to a combined pathology (A plaque plus phosphotau plus -synuclein-positive features), particularly in the prefrontal cortex (BA9) and temporal lobe neocortex with the superior and middle temporal gyrus (BA21, 22), being a major determining factor in the development of dementia. Thus, cognitive decline in Lewy body dementias is not a consequence of -synuclein-induced neurodegeneration alone but senile plaque and phosphorylated tau pathology also contribute to the overall deficits.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available