Rowley AH, Baker SC, Shulman ST, Fox LM, Takahashi K, Garcia FL, Crawford SE, Chou P, Orenstein JM. Cytoplasmic inclusion bodies are detected by synthetic antibody in ciliated bronchial epithelium during acute Kawasaki disease.
J Infect Dis 2005;
192:1757-66. [PMID:
16235174 PMCID:
PMC7110068 DOI:
10.1086/497171]
[Citation(s) in RCA: 63] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2005] [Accepted: 07/01/2005] [Indexed: 11/23/2022] Open
Abstract
BackgroundIn developed nations, Kawasaki disease (KD) is the most common cause of acquired heart disease in children. An infectious etiology is likely but has not yet been identified. We have previously reported that oligoclonal immunoglobulin A plasma cells infiltrate acute KD tissues and that synthetic KD antibodies detect a distinctive spheroidal antigen in acute KD ciliated bronchial epithelium
MethodsTo further characterize the antigen in acute KD bronchi, we examined paraffin-embedded ciliated bronchial epithelium using light microscopy (LM) and transmission electron microscopy (TEM)
ResultsThe spheroids observed by immunohistochemistry (IHC) are visualized as inclusion bodies with hematoxylin-eosin and nucleic acid stains and in methylene blue/azure II/basic fuchsin trichrome–stained plastic sections, suggesting the presence of both protein and nucleic acid. The structures visualized by LM correspond to homogeneous electron-dense perinuclear inclusion bodies (up to 1.4 microns in diameter) in ciliated bronchial epithelium from 4 patients with acute KD examined by TEM. Inclusion bodies were not present in control bronchial epithelium or in nonciliated cells
ConclusionsThe antigen detected in acute KD ciliated bronchial epithelium by IHC with synthetic KD antibodies resides in cytoplasmic inclusion bodies that are consistent with aggregates of viral proteins and associated nucleic acid and may derive from the etiologic agent of KD
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