Kataaki Okubo

Brain-derived estrogens facilitate male-typical behaviors by potentiating androgen receptor signaling in medaka

This study shows brain-derived estrogens enhance male-typical behaviors in medaka by boosting androgen receptor signaling, even though androgens can act directly in other vertebrates.

Identification of the FSH-RH, the other gonadotropin-releasing hormone

The paper identifies cholecystokinin as the FSH-releasing hormone (FSH-RH) in medaka, challenging the solo GnRH model and proposing a dual GnRH model in vertebrates.

Male-specific vasotocin expression in the medaka tuberal hypothalamus: androgen dependence and probable role in aggression

The paper shows that androgen-dependent vasotocin expression in medaka's tuberal hypothalamus is linked to aggression, though its role in male-typical behavior remains to be validated.

Balanced release of neuropeptide FF and gonadotropin-releasing hormone 3 modulates male sexual behavior

The paper shows that balanced release of NPFF and GnRH in TN-GnRH neurons modulates male sexual behavior in medaka, with double knockout showing normal behavior.

Neuropeptide B mediates female sexual receptivity in medaka fish, acting in a female-specific but reversible manner

This study shows that neuropeptide B mediates female sexual receptivity in medaka fish in a female-specific and reversible manner through estrogen-dependent regulation.