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  • Title: Concurrent production of adrenocorticotropin and prolactin from two distinct cell lines in a single pituitary adenoma: a detailed immunohistochemical analysis.
    Author: Sherry SH, Guay AT, Lee AK, Hedley Whyte ET, Federman M, Freidberg SR, Woolf PD.
    Journal: J Clin Endocrinol Metab; 1982 Nov; 55(5):947-55. PubMed ID: 6288757.
    Abstract:
    A pituitary tumor from a patient with severe Cushing's disease and marked hyperprolactinemia was extensively studied by immunohistochemical techniques. Tissues from two separate areas of the adenoma were found to contain similar cell proportions of PRL as well as ACTH and related peptides (beta-lipotropin, beta-endorphin, and alpha MSH). The tumor was composed of approximately 70% immunoreactive PRL cells and 5% ACTH-containing cells. Double immunostaining revealed that PRL or ACTH and related peptides were found in two distinct populations of tumor cells. These results document for the first time inappropriate synthesis and secretion of an unusual combination of pituitary hormones from a mixed pituitary adenoma.
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