ArticleJournal of endocrinological investigation1994
Immunoglobulin A in Graves' orbital tissue: deoxyribonucleic acid amplification by polymerase chain reaction.
Article in Journal of endocrinological investigation, 1994. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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1 citing paper in PubMed, 6 citations in OpenAlex.
- IgA anti-eye muscle cytosol autoantibodies and the clinical stage in Graves' disease.Journal of endocrinological investigation · 1994Article
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4 authors at 2 institutions in 2 countries.
Funding
Abstract
A role for IgA autoantibodies in Graves' ophthalmopathy is suggested by the presence of immunoglobulins of this class in Graves' orbital tissue, as detected by immunohistochemistry. We, therefore, investigated the possibility of using the polymerase chain reaction (PCR) to amplify IgA immunoglobulin genes from plasma cells infiltrating Graves' eye tissue. Template cDNA was reverse-transcribed from orbital muscle (M) mRNA of one patient (#7) and from orbital connective tissue/fat (F) mRNA of two patients (#1 and #7), both undergoing surgery for exophthalmos because of severe infiltrative ophthalmopathy. Preliminary studies to establish the PCR procedure were performed for kappa light chain DNA amplification. With the very small amount of orbital tissue template available, the sensitive "hot start" modification of the PCR was necessary to amplify significant amounts of kappa light chain DNA. Using this procedure, IgA heavy chain DNA was amplified from both connective tissue/fat (F7) and muscle (M7) cDNA of patient #7. The DNA yield was less for IgA than for IgG using the same template. There was no significant IgA (or IgG) DNA product using the connective tissue/fat cDNA of patient #1. While not implying that IgA-infiltrating plasma cells are specific for Graves' orbital tissue, our studies nevertheless demonstrate the feasibility of amplifying the genes coding for IgA antibodies from Graves' orbital tissue plasma cells. Expression of these immunoglobulin genes in future studies will make it possible to determine the antigen specificity of the antibodies expressed by Graves' orbital tissue plasma cells.
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