Yoshinao Katsu

TL;DR: Of considerable interest is the finding that MIH, unlike most steroid hormones, acts on its receptors at the surface of oocytes, and the mechanism of MIH-induced MPF activation in fish oocytes differs from that in Xenopus and starfish.

TL;DR: In vivo interaction between Xenopus Pumilio and CPE-binding protein (CPEB), a key regulator of translational repression and activation of mRNAs stored in oocytes, and physical in vitro association of XenopusPumilIO with a Xenopus homolog of Nanos (Xcat-2) was demonstrated by a protein pull-down assay.

TL;DR: Quantitative RT-PCR showed that gonadal ERalpha transcript levels in juvenile alligators decreased after E2 treatment whereas ERbeta and PR transcripts were not changed, and these results provide tools that will allow future studies examining the regulation and ontogenic expression of steroid receptors in alligators and expand the knowledge of vertebrate steroid receptor evolution.

TL;DR: The results suggest that MPF activation in fish oocytes is induced by complex formation with preexisting cdc2 kinase and newly synthesized cyclin B during oocyte maturation, a situation differing from that in Xenopus and starfish, in which the cdc1 kinase-cyclin B complex is already present in immature oocytes.

TL;DR: Results indicate that ESR1 is likely the principal ESR involved in sex reversal as well as embryonic Müllerian duct survival and growth in American alligators.