title: T-cell dysregulation in patients with hyperprolactinemia: effect of bromocriptine treatment.
abstract: We studied four patients with tumoral hyperprolactinemia and normal ovarian function before and after prolactine levels had become normal with treatment with bromocriptine (BrC), a dopamine agonist that inhibits prolactin release. Their proliferative responses to concanavalin A, pokeweed mitogen, and, to a lesser extent, phytohemagglutinin, their spontaneous and concanavalin A-induced suppression, and their production of interleukin 2 were found to be decreased and to correct partially or completely after bromocriptine treatment. The T-cell response to interleukin 2 was low in two patients in whom it increased after BrC treatment. These findings give insight on the immunomodulatory role of prolactin in vivo.
mesh_terms: D000328:Adult; D001971:Bromocriptine / Q000494:pharmacology*; D005260:Female; D006801:Humans; D007376:Interleukin-2 / Q000096:biosynthesis / Q000494:pharmacology; D008213:Lymphocyte Activation; D011388:Prolactin / Q000097:blood* / Q000502:physiology; D013601:T-Lymphocytes / Q000276:immunology*; D050378:T-Lymphocytes, Regulatory / Q000276:immunology
chemical_list: D007376:Interleukin-2; D001971:Bromocriptine; D011388:Prolactin