BACKGROUND: Senile systemic amyloidosis (SSA) is characterized by deposition of wild-type transthyretin (TTR)-based amyloid in parenchymal organs in elderly individuals. Previously, no population-based studies have been performed on SSA. METHODS: Here we have studied the prevalence and risk factors for SSA in a Finnish autopsied population aged 85 or over, as part of the population-based Vantaa 85+ Autopsy Study (n = 256). The diagnosis of SSA was based on histological examination of myocardial samples stained with Congo red and anti-TTR immunohistochemistry. The genotype frequencies of 20 polymorphisms in 9 genes in subjects with and without SSA were compared. RESULTS: The prevalence of SSA was 25%. SSA was associated with age, myocardial infarctions, the G/G (Val/Val) genotype of the exon 24 polymorphism in the alpha2-macroglobulin (alpha2M), and the H2 haplotype of the tau gene (P-values 0.002, 0.004, 0.042, and 0.016). CONCLUSION: This population-based study shows that SSA is very common in old individuals, affecting one-quarter of people aged over 85 years. Myocardial infarctions and variation in the genes for alpha2M and tau may be associated with SSA.
BACKGROUND:Senile systemic amyloidosis (SSA) is characterized by deposition of wild-type transthyretin (TTR)-based amyloid in parenchymal organs in elderly individuals. Previously, no population-based studies have been performed on SSA. METHODS: Here we have studied the prevalence and risk factors for SSA in a Finnish autopsied population aged 85 or over, as part of the population-based Vantaa 85+ Autopsy Study (n = 256). The diagnosis of SSA was based on histological examination of myocardial samples stained with Congo red and anti-TTR immunohistochemistry. The genotype frequencies of 20 polymorphisms in 9 genes in subjects with and without SSA were compared. RESULTS: The prevalence of SSA was 25%. SSA was associated with age, myocardial infarctions, the G/G (Val/Val) genotype of the exon 24 polymorphism in the alpha2-macroglobulin (alpha2M), and the H2 haplotype of the tau gene (P-values 0.002, 0.004, 0.042, and 0.016). CONCLUSION: This population-based study shows that SSA is very common in old individuals, affecting one-quarter of people aged over 85 years. Myocardial infarctions and variation in the genes for alpha2M and tau may be associated with SSA.
Authors: Jacquelyn L Sikora; Mark W Logue; Gloria G Chan; Brian H Spencer; Tatiana B Prokaeva; Clinton T Baldwin; David C Seldin; Lawreen H Connors Journal: Hum Genet Date: 2014-11-04 Impact factor: 4.132
Authors: João L Cavalcante; Shasank Rijal; Islam Abdelkarim; Andrew D Althouse; Michael S Sharbaugh; Yaron Fridman; Prem Soman; Daniel E Forman; John T Schindler; Thomas G Gleason; Joon S Lee; Erik B Schelbert Journal: J Cardiovasc Magn Reson Date: 2017-12-07 Impact factor: 5.364
Authors: Fabiana G Marcondes-Braga; Lídia Ana Zytynski Moura; Victor Sarli Issa; Jefferson Luis Vieira; Luis Eduardo Rohde; Marcus Vinícius Simões; Miguel Morita Fernandes-Silva; Salvador Rassi; Silvia Marinho Martins Alves; Denilson Campos de Albuquerque; Dirceu Rodrigues de Almeida; Edimar Alcides Bocchi; Felix José Alvarez Ramires; Fernando Bacal; João Manoel Rossi Neto; Luiz Claudio Danzmann; Marcelo Westerlund Montera; Mucio Tavares de Oliveira Junior; Nadine Clausell; Odilson Marcos Silvestre; Reinaldo Bulgarelli Bestetti; Sabrina Bernadez-Pereira; Aguinaldo F Freitas; Andréia Biolo; Antonio Carlos Pereira Barretto; Antônio José Lagoeiro Jorge; Bruno Biselli; Carlos Eduardo Lucena Montenegro; Edval Gomes Dos Santos Júnior; Estêvão Lanna Figueiredo; Fábio Fernandes; Fabio Serra Silveira; Fernando Antibas Atik; Flávio de Souza Brito; Germano Emílio Conceição Souza; Gustavo Calado de Aguiar Ribeiro; Humberto Villacorta; João David de Souza Neto; Livia Adams Goldraich; Luís Beck-da-Silva; Manoel Fernandes Canesin; Marcelo Imbroinise Bittencourt; Marcely Gimenes Bonatto; Maria da Consolação Vieira Moreira; Mônica Samuel Avila; Otavio Rizzi Coelho Filho; Pedro Vellosa Schwartzmann; Ricardo Mourilhe-Rocha; Sandrigo Mangini; Silvia Moreira Ayub Ferreira; José Albuquerque de Figueiredo Neto; Evandro Tinoco Mesquita Journal: Arq Bras Cardiol Date: 2021-06 Impact factor: 2.000