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- Title
Direct Tissue Evaluation via Immunofluorescence.
- Authors
Fradley, Michael G.; Thakuria, Joseph V.; Collins, A. Bernard; Moore, Stephanie A.; Stone, James R.
- Abstract
Multiple precursor proteins have been shown to cause cardiac amyloidosis. The most common forms are due either to immunoglobulin light chains or to transthyretin proteins (either wild-type or mutant forms). Correct subclassification of the amyloid is paramount because treatment differs in accordance with the type of amyloidosis. Indirect diagnostic methods, including serologic analysis, can lead to misdiagnosis. Definitive diagnosis often requires analysis of amyloid in the tissue. We present a case of a woman who was diagnosed with hereditary transthyretin cardiac amyloidosis by means of immunofluorescence and genetic analysis. This case highlights the importance--in the diagnostic algorithm of cardiac amyloidosis--of direct evaluation of the tissue with immunofluorescence and of genetic testing.
- Subjects
PROTEIN precursors; PROTEINS; IMMUNOGLOBULINS; TRANSTHYRETIN
- Publication
Texas Heart Institute Journal, 2012, Vol 39, Issue 1, p71
- ISSN
1526-6702
- Publication type
Case Study