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. 1990 Apr;87(7):2843-5.
doi: 10.1073/pnas.87.7.2843.

Fibril in senile systemic amyloidosis is derived from normal transthyretin

P Westermark  1 , K Sletten, B Johansson, G G Cornwell 3rd
Affiliations

Fibril in senile systemic amyloidosis is derived from normal transthyretin

P Westermark et al. Proc Natl Acad Sci U S A. 1990 Apr.

Abstract

The amyloid fibril in senile systemic amyloidosis (SSA), like that of familial amyloidotic polyneuropathy, is derived from transthyretin (TTR). SSA, however, is a common disease, affecting to some degree 25% of the population greater than 80 years old. In familial amyloidotic polyneuropathy, the amyloidogenesis has been considered to depend on point mutations leading to TTR variants. We show that the TTR molecule in SSA, on the other hand, has a normal primary structure. Factors other than the primary structure of TTR must therefore be important in the pathogenesis of TTR-derived amyloid.

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