Estradiol receptor in the lizard liver (Podarcis s. sicula). Seasonal changes and estradiol and growth hormone dependence.

This study shows that in the liver of the oviparous lizard, Podarcis s. sicula, the estrogen receptor (ER) level increases during the reproductive period (spring) when vitellogenesis occurs. This phenomenon interested both unfilled and filled ER present in the cytosolic and nuclear fractions.

Effects of Gonadotrophin-Releasing Hormone Variants on Reproductive Organs and Plasma Testosterone in the Male Lizard, Podarcis s. sicula.

Abstract The effects of various gonadotrophin-releasing hormone (GnRH) forms (mammalian GnRH (mGnRH), chicken I GnRH (cGnRH-I), chicken II GnRH (cGnRH-II) and salmon GnRH (sGnRH)) on the genital apparatus and plasma testosterone level in the male lizard, Podarcis s. sicula, have been investigated. In short duration experiments (20 min to 76 h) GnRH forms did not affect testicular and epididymal morphology.

Estradiol-binding molecules in the hepatocytes of the female water frog, Rana esculenta, and plasma estradiol and vitellogenin levels during the reproductive cycle.

Estradiol-binding molecules have been found both in cytosol and nuclear extract of hepatocytes of the female green frog Rana esculenta. These molecules show the properties of an estradiol receptor (Re): high and specific affinity for estrogens (2.10-7.

Sex differences in liver non-specific esterases of the green frog Rana esculenta.

1. Liver esterases of the green frog Rana esculenta have been fractionated on disc electrophoresis, thin-layer electrofocusing and column electrofocusing. 2.