PRO-DYNORPHIN IS ENDOGENOUS TO THE ANTERIOR PITUITARY AND IS CO-LOCALIZED WITH LH AND FSH IN THE GONADOTROPHS

Henry Khachaturian, Thomas G. Sherman, R V Lloyd, Olivier Civelli, James Douglass, Ed Herbert, Huda Akil, Stanley J. Watson

Endocrinology · 1986 · 44 citations · 10 references

Concepts

Abstract

Pro-dynorphin peptides have been shown to exist in the anterior lobe of the pituitary gland. The dynorphin in the anterior lobe is distinct from that which is co-localized with vasopressin in the magnocellular system in both post-translational processing and regulation of release. Here, we report on the existence of pro-dynorphin mRNA, approximately 2400 nucleotides in length, in the anterior lobe. Furthermore, we present immunocytochemical evidence for the co-existence of dynorphin, LH and FSH in a subset of gonadotrophs. These findings suggest a possible role of pro-dynorphin products in the regulation of the hypothalamic-pituitary-gonadal axis.

References

10