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Senile Cardiac Amyloidosis: Evidence of Two Different Amyloid Substances in the Ageing Heart
Author(s) -
WESTERMARK P.,
JOHANSSON B.,
NATVIG J. B.
Publication year - 1979
Publication title -
scandinavian journal of immunology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.934
H-Index - 88
eISSN - 1365-3083
pISSN - 0300-9475
DOI - 10.1111/j.1365-3083.1979.tb01355.x
Subject(s) - amyloidosis , amyloid (mycology) , ageing , cardiac amyloidosis , amyloid fibril , medicine , pathology , cardiology , amyloid β , disease
In a material of seventy‐two persons over 70 years of age. forty‐seven cases of amyloidosis of the heart were found. In thirty‐nine cases, deposits occurred only in the atria (isolated atrial amyl‐oidosis. IAA), while in eight cases amyloid also was seen in the ventricles (senile cardiac amyloidosis, SCA). In some of the latter cases, small amyloid deposits occurred in other organs, especially the lungs. Some definite differences existed between the amyloid substance in SCA and IAA. Thus, tryptophan was demonstrated histochemically in SCA but not in IAA, and, furthermore, amyloid fibrils isolated from patients with IAA lacked protein A SCA , the fibril subunit protein of senile cardiac amyloid. It is concluded that the ageing heart may be the target of two different forms of amyloid, one only affecting the atria, while the other is more widespread within the heart and sometimes also is found in other organs.