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. 1988 Oct;12(3):131-3.
doi: 10.1016/0143-4179(88)90043-1.

Interaction of vasoactive intestinal peptide (VIP) and growth hormone releasing factor (GRF) with corticotropin releasing factor (CRF) on corticotropin secretion in vitro

J F Léonard  1 , M T Bluet-Pajot, C Oliver, C Kordon
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Interaction of vasoactive intestinal peptide (VIP) and growth hormone releasing factor (GRF) with corticotropin releasing factor (CRF) on corticotropin secretion in vitro

J F Léonard et al. Neuropeptides. 1988 Oct.

Abstract

The possible interaction of VIP and GRF with CRF on ACTH release was examined by using superfused rat anterior pituitary fragments. ACTH was measured in effluent medium samples by RIA. Increasing concentrations of VIP and GRF (10(-8) to 10(-6)M) had no effect on spontaneous ACTH secretion but potentiated CRF (10(-10)M) induced ACTH release in a dose dependent manner. The high concentrations of VIP or GRF required to produce the effect suggest that both the peptides could interfere with a common unidentified binding site on corticotrophs or stimulate a second messenger by a paracrine action.

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