Endocrine Abstracts

Annexin 1 (Anx-1), a 37kDa protein, is a member of the super-family of Ca 2+ and phospholipid-binding annexin proteins and acts as a mediator of glucocorticoid (GC) action in the host defense and neuroendocrine systems. In the anterior pituitary Anx-1 is expressed mainly by folliculostellate (FS) cells and mediates the early delayed feedback inhibition exerted by GCs on the release of ACTH and other pituitary hormones. It has been previously demonstrated that TtT/GF...

During the search for the serine protease that cleaves pro-gamma-melatropin to stimulate adrenal growth (Bicknell et al, Cell, 2001, 105: 903), we identified another novel protease which we called AmP. In situ hybridisation detected AmP transcripts in steroidogenic tissues such as the brain particularly in the PVN and the dentate gyrus, in leydig cells of the testis, in underdeveloped follicles in the ovary as well as in the adrenal cortex. Full length cloning identified two s...

Annexin A1 (AnxA1) acts as a mediator of glucocorticoid (GC) actions in neuroendocrine systems. In the anterior pituitary Anx-1 is expressed mainly by folliculostellate (FS) cells and mediates the early-delayed feedback inhibition exerted by GCs on release of ACTH and other pituitary hormones. GC cause the externalization of AnxA1. The stress responsiveness of the female rat hypothalamo-pituitary-adrenal system varies with the estrous cycle, with increased CORT release in resp...

Annexin-1 (Anx-1), a 37kDa protein, is a member of the super-family of Ca2+- and phospholipid-binding annexin proteins and acts as a mediator of glucocorticoid (GC) action in the host defence and neuroendocrine systems. In the anterior pituitary Anx-1 is expressed mainly by folliculostellate (FS) cells and mediates the early delayed feedback inhibition exerted by GCs on the release of ACTH and other pituitary hormones.The role of Anx-1 in the ...

VEGF (vascular endothelial growth factor) is an endothelial cell mitogen responsible for physiological and pathophysiological angiogenesis. Abnormal regulation of VEGF expression in anterior pituitary folliculostellate (FS) cells has been implicated in pituitary tumour progression. PACAP is a well-documented stimulant of VEGF secretion from the pituitary in which both FS and endocrine cells express VEGF. TtT/GF cells are a mouse pituitary cell line with many characteristics of...