The effect of bombesin (5 ng/kg/min × 2.5 h) on basal pituitary secretion as well as on the response to thyrotropin releasing hormone (TRH; 200 µg) plus luteinizing hormone releasing hormone (LHRH; 100 µg) was studied in healthy male volunteers. The peptide did not change the basal level of growth hormone (GH), prolactin, thyroid-stimulating hormone (TSH), luteinizing hormone (LH) and follicle-stimulating hormone (FSH). On the contrary, the pituitary response to releasing hormones was modified by bombesin administration. When compared with control (saline) values, prolactin and TSH levels after TRH were lower during bombesin infusion, whereas LH and FSH levels after LHRH were higher. Thus bombesin affects in man, as in experimental animals, the secretion of some pituitary hormones.

Keywords:
Bombesin, Growth hormone, Prolactin, Thyroid-stimulating hormone, Luteinizing hormone, Follicle stimulating hormone, Pituitary secretion
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© 1986 S. Karger AG, Basel
1986
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