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Although glucocorticoid, as “gluco-” literally implies, plays an important role in maintaining the blood glucose level, excess of glucocorticoid production/action is known to cause impaired glucose tolerance and diabetes. Since 11β-hydroxysteroid dehydrogenase type 1 (11β-HSD1), which...
Estrogen (E2; estradiol) plays a key role in the regulation of many pituitary hormones. It exerts its effects by binding to the intracellular estrogen receptor (ER), which then functions as a transcription factor. Although E2 has been shown to regulate calbindin-D 9k (CaBP-9k) in the female...
In endometrial adenocarcinomas COX-2 and F-series prostanoid (FP) receptor expression and prostanoid biosynthesis (PGE 2 and PGF 2α ) are elevated. In the present study, we investigated the effect of PGE 2 and PGF 2α on the expression of COX-2 via the FP receptor in endometrial adenocarcinoma...
The renal enzyme 25-hydroxyvitamin D 1α-hydroxylase (CYP27B1), responsible for the synthesis of circulating. 1,25-dihydroxyvitamin D (1,25D), is also expressed in a number of non-renal tissues. The regulation of CYP27B1 expression by the short flanking promoter outside the kidney is, however,...
Obesity increases the risk of developing several cancers including oesophageal adenocarcinoma (OAC). Obesity is characterised by hyperleptinaemia and hypoadiponectinaemia: we have hypothesised that these hormonal factors may contribute to the progression of OAC. We have examined the effects of...
Using primary cultures of immature rat granulosa cells and adenoviral infections we expressed two mutants of the human lutropin receptor (hLHR) that do not activate the phosphoinositide cascade. One mutant (hLFF) has the extracellular domain of the hLHR and the transmembrane and intracellular...
Ghrelin regulates cell proliferation through the growth hormone secretagogue receptor (GHS-R). We confirmed the expression of GHS-R in FRTL-5 thyroid cells and investigated the effects of ghrelin in thyrocytes using FRTL-5 cells. Ghrelin increased intracellular calcium levels but not...
The adverse effects of glucocorticoid deficiency on the expression of genes encoding Leydig cell surface receptors and the response to LH/prolactin/insulin to produce testosterone production are yet to be recognized. Following metyrapone-induced corticosterone deficiency, serum corticosterone,...
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