PMID- 21916927 OWN - NLM STAT- MEDLINE DCOM- 20120907 LR - 20220311 IS - 1365-2990 (Electronic) IS - 0305-1846 (Linking) VI - 38 IP - 4 DP - 2012 Jun TI - Prevalence and severity of cerebral amyloid angiopathy: a population-based study on very elderly Finns (Vantaa 85+). PG - 329-36 LID - 10.1111/j.1365-2990.2011.01219.x [doi] AB - BACKGROUND: Cerebral amyloid angiopathy (CAA) is frequent in patients with Alzheimer's disease while its prevalence in different populations is variable. We investigated the prevalence and severity of CAA in a very elderly Finnish population. METHODS: Neuropathological investigation was performed on 306 subjects from the population-based Vantaa 85+ Study (253 women, 53 men, mean age at death 92.3 years). The presence of CAA was analysed in six brain regions by using Congo red and immunohistochemistry with an antibody against amyloid beta peptide. The severity of CAA was assessed by counting the percentage of the CAA-positive blood vessels. RESULTS: In total, 69.6% of the participants (170 women, 43 men) had CAA, with median severity of 1.0%, inter-quartile range (IQR) 0-5.4% and range 0-72.7%. CAA was more prevalent (81.1% vs. 67.2%; P = 0.046) and severe (median 2.7%, IQR 0.4-7.5%, range 0-72.7%) in the men than in the women (median 1.0%, IQR 0-4.6%, range 0-52.8%; P = 0.004). Parietal lobe showed the highest prevalence (57.8%) whereas the severity was highest (median 1.0%, IQR 0-6.0%, range 0-77%) in the frontal lobe. Prevalence of CAA in the six regions was variable, but the severity indices between those regions correlated highly (P < 0.001 for all regions). Meningeal CAA was more prevalent (69.5%) than cortical (59.3%; P < 0.001). CONCLUSION: CAA was highly prevalent, albeit mild, in the very old. The prevalence and severity of CAA were found to be highest in the frontal and parietal lobes respectively - independent of the staining method used (Congo red or amyloid beta peptide). CI - (c) 2011 The Authors. Neuropathology and Applied Neurobiology (c) 2011 British Neuropathological Society. FAU - Tanskanen, M AU - Tanskanen M AD - Department of Pathology, Haartman Institute, University of Helsinki and HUSLAB, Haartmaninkatu 3, Helsinki, Finland. maarit.tanskanen@helsinki.fi FAU - Makela, M AU - Makela M FAU - Myllykangas, L AU - Myllykangas L FAU - Notkola, I-L AU - Notkola IL FAU - Polvikoski, T AU - Polvikoski T FAU - Sulkava, R AU - Sulkava R FAU - Kalimo, H AU - Kalimo H FAU - Paetau, A AU - Paetau A LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Neuropathol Appl Neurobiol JT - Neuropathology and applied neurobiology JID - 7609829 RN - 0 (Coloring Agents) RN - 3U05FHG59S (Congo Red) SB - IM MH - Aged, 80 and over MH - Brain/blood supply/*pathology MH - Cerebral Amyloid Angiopathy/*epidemiology/*pathology MH - Coloring Agents MH - Congo Red MH - Female MH - Finland/epidemiology MH - Humans MH - Immunohistochemistry MH - Male MH - Prevalence EDAT- 2011/09/16 06:00 MHDA- 2012/09/08 06:00 CRDT- 2011/09/16 06:00 PHST- 2011/09/16 06:00 [entrez] PHST- 2011/09/16 06:00 [pubmed] PHST- 2012/09/08 06:00 [medline] AID - 10.1111/j.1365-2990.2011.01219.x [doi] PST - ppublish SO - Neuropathol Appl Neurobiol. 2012 Jun;38(4):329-36. doi: 10.1111/j.1365-2990.2011.01219.x.