Immunochemical microanalysis of amyloid proteins in fine-needle aspirates of abdominal fat

Batia Kaplan, Ruben Vidal, Asok Kumar, Jorge Ghiso, Gloria Gallo

Research output: Contribution to journalArticle

32 Scopus citations

Abstract

Diagnosis of systemic amyloidosis by fine-needle aspiration biopsy of abdominal fat is well established. A complete diagnosis now must include determination of the chemical type of amyloid. Microextracts of amyloid proteins from 11 Congo red-positive aspirate samples were analyzed with immunochemical methods. There was correspondence of the results obtained by immunohistologic and Western blotting analyses in 3 of 4 specimens with κ light chain amyloid, 5 of 6 with λ amyloid, and 1 with amyloid A. The method provides rapid and reliable diagnostic information necessary for classification of the chemical type of amyloid required for initiation of specific modes of therapy, with little discomfort to the patient.

Original languageEnglish (US)
Pages (from-to)403-407
Number of pages5
JournalAmerican journal of clinical pathology
Volume112
Issue number3
DOIs
StatePublished - Jan 1 1999
Externally publishedYes

Keywords

  • Amyloid
  • Fat aspirates
  • Microextraction
  • Western blotting

ASJC Scopus subject areas

  • Pathology and Forensic Medicine

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