Endocrine Abstracts

Performance enhancing substances enjoy considerable popularity among athletes, particularly if deemed undetectable. Doping with growth hormone has been considered undetectable until recently. Two strategies have been pursued to detect GH doping: Pharmacological endpoints and GH isoform composition.For the former approach the consortium GH 2000/2004 has identified markers of GH action and found a combination of parameters from the IGF-system and collagen ...

The leptin receptor (ObR) exists in multiple isoforms. In humans, there is no mRNA encoding soluble receptor (LBP). We investigated the hypothesis that human LBP can be generated by proteolytic cleavage of membrane anchored leptin receptors (ObRb and ObRa). LBP, of similar size to that previously detected in human serum, was detected in medium of cells transfected with ObRa by HPLC, Immunofluorometric assay, and Ligand mediated immunofluorometric assay, but not by ELISA. The L...

DICER1 is a microRNA processing-RNase III-type endoribonuclease and is crucial for embryogenesis and early development. Nearly 50 different heterozygous germ-line DICER1 mutations have been reported world-wide in individuals who developed, as children or young adults, pleuropulmonary blastoma, cystic nephroma, ovarian sex cord stromal tumors (especially Sertoli–Leydig cell tumor), multi-nodular goiter, embryonal rhabdomyosarcoma (of cervix and other typical sites), Wilms ...