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| IJCEP Copyright © 2007-All rights reserved. |
| International Journal of Clinical and Experimental Pathology |
Int J Clin Exp Pathol 1(5):403-408;2008
Original Article
Perivascular neuritic dystrophy associated with cerebral amyloid angiopathy in
Alzheimer’s disease
Kenichi Oshima, Hirotake Uchikado, and Dennis W. Dickson
Department of Neuroscience, Mayo Clinic, Jacksonville, Florida
Received 30 Nov 2007; Accepted and available online 1 January 2008
Abstract: Cerebral amyloid angiopathy (CAA) affects both leptomeningeal and parenchymal blood vessels and is common in Alzheimer’s
disease (AD). In some vessels CAA is accompanied by localized neuritic dystrophy around the affected blood vessel. The aim of this
study was to assess the distribution and severity of perivascular neuritic dystrophy in primary visual and visual association cortices. The
severity of perivascular neuritic dystrophy and Aβ deposition was scored in an association cortex (Brodmann area 18) and a primary
cortex (Brodmann area 17) with double labeling immunohistochemistry for tau and Aβ in 31 cases of AD with severe CAA. The
perivascular tau neuritic dystrophy score was significantly worse in visual association cortex than in primary visual cortex. On the other
hand, there was no difference in the perivascular Aβ score between the two cortices. There were positive correlations between the
severity of perivascular tau and perivascular Aβ scores for both primary and association cortices. The results suggest that the local
neuronal environment determines the severity and nature of the perivascular neuritic pathology more than the severity of the intrinsic
vascular disease and suggest a close association between perivascular amyloid deposits, so-called dyshoric angiopathy, and
perivascular neuritic dystrophy. (IJCEP711002).
Key Words: Alzheimer’s disease, amyloid angiopathy, Aβ, tau, neuritic dystrophy, visual cortex
Full Text PDF
Address all correspondences to: Dennis W. Dickson, MD, Neuropathology Laboratory, Mayo Clinic, 4500 San Pablo Road, Jacksonville,
FL. 32224; Tel: 904-953-7137, Fax: 904-953-7117; Email: dickson.dennis@mayo.edu
Original Article
Perivascular neuritic dystrophy associated with cerebral amyloid angiopathy in
Alzheimer’s disease
Kenichi Oshima, Hirotake Uchikado, and Dennis W. Dickson
Department of Neuroscience, Mayo Clinic, Jacksonville, Florida
Received 30 Nov 2007; Accepted and available online 1 January 2008
Abstract: Cerebral amyloid angiopathy (CAA) affects both leptomeningeal and parenchymal blood vessels and is common in Alzheimer’s
disease (AD). In some vessels CAA is accompanied by localized neuritic dystrophy around the affected blood vessel. The aim of this
study was to assess the distribution and severity of perivascular neuritic dystrophy in primary visual and visual association cortices. The
severity of perivascular neuritic dystrophy and Aβ deposition was scored in an association cortex (Brodmann area 18) and a primary
cortex (Brodmann area 17) with double labeling immunohistochemistry for tau and Aβ in 31 cases of AD with severe CAA. The
perivascular tau neuritic dystrophy score was significantly worse in visual association cortex than in primary visual cortex. On the other
hand, there was no difference in the perivascular Aβ score between the two cortices. There were positive correlations between the
severity of perivascular tau and perivascular Aβ scores for both primary and association cortices. The results suggest that the local
neuronal environment determines the severity and nature of the perivascular neuritic pathology more than the severity of the intrinsic
vascular disease and suggest a close association between perivascular amyloid deposits, so-called dyshoric angiopathy, and
perivascular neuritic dystrophy. (IJCEP711002).
Key Words: Alzheimer’s disease, amyloid angiopathy, Aβ, tau, neuritic dystrophy, visual cortex
Full Text PDF
Address all correspondences to: Dennis W. Dickson, MD, Neuropathology Laboratory, Mayo Clinic, 4500 San Pablo Road, Jacksonville,
FL. 32224; Tel: 904-953-7137, Fax: 904-953-7117; Email: dickson.dennis@mayo.edu