Endocrine Abstracts

Strong gain-of-function mutations have not been identified in humans in the FSH receptor (FSHR), while such mutations are common among many other G-protein-coupled receptors. In order to predict consequences of such mutations on humans, D580 (D6.44) mutant forms of mouse (m) FSHR were expressed under the human anti-Müllerian hormone promoter in transgenic mice. Transgenic expression of mFshrD580H in granulosa cells led to abnormal ovarian structur...

Hydroxysteroid (17-β) dehydrogenase enzymes (HSD17Bs) have an important role in sex steroid hormone metabolism. They are known to catalyze reactions between highly active 17β-hydroxy steroids and less active 17-keto steroids. In addition to sex steroid metabolism, it is becoming evident that HSD17Bs have functions in other pathways as well, e.g. lipid and bile acid metabolism. HSD17B type 7 enzyme is known to catalyze in vitro the activation of estrone (E1) to...

Sex steroids are involved in the development of obesity and metabolic disorders. The interrelationship between sex steroid balance and metabolism is complex, and the underlying mechanisms are still unclear. The impact of gut microbiota in development of obesity, inflammation and metabolic dysregulation has been suggested in humans and demonstrated in mouse models. Less is known about the interactions between sex steroids and gut microbiota. Based on available evidence, it is, ...

: Hydroxysteroid (17beta) dehydrogenases (HSD17Bs) form a group of enzymes that are characterized by their sequence similarity at the active site, and their ability to catalyze the conversion between the weak 17keto- and the highly active 17beta-hydroxysteroids. To study the physiological role of HSD17B13, a lipid droplet associated protein, we characterized the phenotype of knockout (KO) mice deficient in HSD17B13 (HSD17B13KO). The data revealed normal serum sex steroid conce...