EFFECTS OF VASOACTIVE-INTESTINAL-PEPTIDE (VIP) AND PEPTIDE HISTIDINE METHIONINE (PHM) ON BASAL AND CORTICOTROPIN-RELEASING HORMONE (CRH)-STIMULATED ACTH CORTISOL SECRETION IN CUSHINGS-DISEASE
B. Ambrosi et al., EFFECTS OF VASOACTIVE-INTESTINAL-PEPTIDE (VIP) AND PEPTIDE HISTIDINE METHIONINE (PHM) ON BASAL AND CORTICOTROPIN-RELEASING HORMONE (CRH)-STIMULATED ACTH CORTISOL SECRETION IN CUSHINGS-DISEASE, Neuro endocrinology letters, 17(4), 1995, pp. 313-318
The possible role of Vasoactive Intestinal Peptide (VIP) and Peptide H
istidine Methionine (PHM) as neuromodulators of anterior pituitary fun
ction in humans has been suggested. In this work the effects of VIP an
d PHM on basal and CRH-stimulated ACTH/F secretion were studied in 7 p
atients with Gushing's disease. An ACTH/F response was found in 3 case
s during PHM infusion and in 2 of 6 patients during VIP infusion. When
compared to CRH alone, a blunted ACTH response to CRH during PHM occu
rred in 5 tested patients and during VIP in 3 cases. In conclusion, VI
P and PHM are able to rise ACTH/F secretion in some patients with Gush
ing's disease, but are unable to potentiate the response to CRH, which
rather may be reduced.