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Are Thymus-Derived Lymphocytes (T Cells) Defective in the Nasopharyngeal and Palatine tonsils of Children?

The present study was conducted to evaluate the response of adenoidal T cells and B cells in the production of immunoglobulins. There appears to be a consistent inability of adenoidal T cells to turn on B cells to mature into immunoglobulin-secreting plasma cells. This phenomenon did not appear to be due to suppressor activity of adenoidal T cells because T cells from other sources appeared to effectively result in adenoidal B cell maturation, even in the presence of adenoidal T cells. Both tonsils and adenoids appear to have defective IL-2 production, in response to both mitogens and specific antigens. It is hypothesized that a cytokine(s) may be released in adenoids that downregulate IL-2 production and result in immune suppression in the adenoids of children with recurrent otitis media and chronic sinusitis.