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Phenotypic and functional abnormalities of T lymphocytes in pathological hyperprolactinemia

Abstract

The phenotype and function of T cells circulating in patients with pathological hyperprolactinemia were analyzed and compared to those in sex- and age-matched control subjects. Two-color immunofluorescence study revealed an increased number of CD4+ TQ1+ cells and the presence of phenotypically immature CD1+ T cells, also exhibiting transferrin surface receptor, in peripheral blood of the hyperprolactinemic patients. After chronic treatment with the dopamine agonist bromocriptine, T-cell abnormalities disappeared. In addition, some untreated patients showed enhanced T-cell suppressor activity in anin vitro pokeweed mitogen-driven B-cell transformation assay. These immunological findings confirm a link between neuroendocrine and immune systems in humans.

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Correspondence to P. Rambotti.

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Gerli, R., Riccardi, C., Nicoletti, I. et al. Phenotypic and functional abnormalities of T lymphocytes in pathological hyperprolactinemia. J Clin Immunol 7, 463–470 (1987). https://doi.org/10.1007/BF00915056

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Key words

  • Pathological hyperprolactinemia
  • T lymphocytes
  • prolactin
  • neuroendocrine system