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Interleukin 1 beta inhibition of TRH-stimulated prolactin secretion and phosphoinositides metabolism
Journal article   Peer reviewed

Interleukin 1 beta inhibition of TRH-stimulated prolactin secretion and phosphoinositides metabolism

Gennaro Schettini, Elisa Landolfi, Maurizio Grimaldi, Olimpia Meucci, Alfredo Postiglione, Tullio Florio and Carmelo Ventra
Biochemical and biophysical research communications, v 165(1), pp 496-505
1989
PMID: 2556147

Abstract

PRL IL1
The effect of interleukin 1 beta on prolactin secretion and on phosphoinositide turnover in anterior pituitary cells was evaluated. Interleukin 1 beta significantly inhibited TRH-stimulated prolactin secretion assessed by the reverse hemolytic plaque assay. In particular, the cytokine reduced the percentage of plaque forming cells, the plaque mean area, the large plaques percentage. TRH-stimulated inositol phosphate production was also significantly inhibited by interleukin 1 beta. This study shows that interleukin 1 beta reduces TRH-induced prolactin secretion through a direct action on pituitary cell, and attenuates the TRH-stimulated phosphoinositide breakdown. This latter effect may suggest that the reduced lactotropes sensitivity to TRH action may be partially due to interleukin 1 beta inhibition of phosphatidylinositol breakdown.

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Web of Science research areas
Biochemistry & Molecular Biology
Biophysics
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