Prolactin cell (also known as epsilon acidophil, lactotrope, lactotropic cell, lactotroph, mammatroph, mammotroph) is a cell in the anterior pituitary which produces prolactin in response to hormonal signals including dopamine, estrogen, progesterone and Thyrotropin-releasing hormone. Dopamine has an inhibitory effect on PRL (prolactin) secretion. Prolactin cell are acidophilic by H&E stains and comprise about 20% of all cells in the anterior pituitary gland.
If these cells undergo neoplastic transformation, they will give rise to a prolactinoma, a prolactin-secreting pituitary adenoma.
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