PMID: 2505621Jul 1, 1989Paper

Intrathyroidal dendritic cells, epitheloid cells, and giant cells in iodine deficient goiter

The American Journal of Pathology
M M Wilders-TruschnigG Lanzer

Abstract

Immunohistochemistry and immunofluorescence were performed on thyroid sections of 44 consecutive patients undergoing thyroid surgery for goiter due to iodine deficiency. Sections were compared with specimens from ten individuals without goiters from the same endemic area, with specimens from ten sporadic nontoxic goiter patients, and with specimens from an area with sufficient iodine supply from nine healthy subjects. Cells were characterized using monoclonal antibodies to the CR3 receptor (CD11b) and the p150/95 antigen (CD11c) present on macrophages, to HLA-DR, to antigen presenting cells (RFD1), to T helper (CD4) and to T suppressor/cytotoxic cells (CD8), and with a polyclonal antibody to human cytokeratin. In iodine deficient goiters, focal aggregates were found of RFD1-positive dendritic cells. Furthermore, RFD1-positive epitheloid cells were seen. In 27% of cases, these epitheloid cells completely filled the thyroid follicles. Within the epitheloid cell clusters, multinucleated giant cells could be detected that carried the macrophage markers. Dendritic cells, epitheloid cells, and giant cells were strongly HLA-DR positive. In nongoitrous thyroids from the endemic area such aggregates could also be seen but they were more...Continue Reading

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