Neurohormonal stimulation of histamine release from neuroendocrine cells of the human adenomatous prostate

The Prostate
A PolgeJ P Bali

Abstract

Neuroendocrine cells (NE) constitute a population of highly specialized cells in prostatic glands; histamine has never been described in these cells. This article shows the presence and the regulation of release of histamine in NE. In 21 prostatic adenomas, NE were identified by specific antisera against neuroendocrine markers (chromogranin-A, synaptophysin), histamine, and histidine decarboxylase (HDC); a rate HDC-cDNA probe was used to detect this enzyme by in situ hybridization. Immunoreactive cells for chromogranin-A, histamine, and HDC were found among luminal epithelial glandular cells. Similar cells were also labeled with the HDC-cDNA probe. Glandular cells, isolated from prostatic adenomas, were shown to contain histamine (7-40 pmol/mg cellular protein). L(-) norepinephrine causes a time-dependent (t1/2 = 22 min) histamine release; the alpha 1-receptor antagonists WB-4101 and YM-617 specifically inhibited this release, in agreement with a mediation by alpha 1-adrenoreceptor subtype. There is some evidence for the presence in prostatic adenomas of histamine-forming cells of neuroendocrine type; histamine release from these cells is under the control of alpha 1-adrenoreceptor subtype.

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Citations

Feb 24, 2009·European Journal of Pharmacology·Dan-Thanh T NguyenBetty Exintaris
Apr 22, 2004·The Journal of Biological Chemistry·Jun Hee KimSung Joon Kim
Apr 12, 2003·Pflügers Archiv : European journal of physiology·Jun Hee KimSung Joon Kim

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