Diethylstilbestrol induces fish oocyte maturation.
An endocrine-disrupting chemical, diethylstilbestrol (DES), a nonsteroidal estrogen, triggers oocyte maturation in fish. The morphology (the time course of the change in germinal vesicle breakdown) and an intracellular molecular event (the de novo synthesis of cyclin B) induced by DES were indistinguishable from those induced by a natural maturation-inducing hormone, 17alpha,20beta-dihydroxy-4-pregnen-3-one (17,20beta-DHP). A synergistic action of DES on 17,20beta-DHP-induced oocyte maturation was observed. Both 17,20beta-DHP- and DES-induced oocyte maturation was inhibited by an antibody against the maturation-inducing hormone receptor. The structural requirement for the action of DES is discussed based on results obtained with DES analogs.
Department of Biology and Geosciences, Faculty of Science, Shizuoka University, Shizuoka 422-8529, Japan. sbttoku@ipc.shizuoka.ac.jp
Toshinobu
T
Tokumoto
Mika
M
Tokumoto
Ryo
R
Horiguchi
Katsutoshi
K
Ishikawa
Yoshitaka
Y
Nagahama
D000818:Animals; D000906:Antibodies / Q000008:administration & dosage; D004054:Diethylstilbestrol / Q000494:pharmacology*; D004968:Estrogens, Non-Steroidal / Q000494:pharmacology*; D005260:Female; D006054:Goldfish; D006908:Hydroxyprogesterones / Q000494:pharmacology; D066298:In Vitro Techniques; D009865:Oocytes / Q000187:drug effects* / Q000254:growth & development*; D011980:Receptors, Progesterone / Q000037:antagonists & inhibitors; D015398:Signal Transduction / Q000187:drug effects
D000906:Antibodies; D004968:Estrogens, Non-Steroidal; D006908:Hydroxyprogesterones; D011980:Receptors, Progesterone; C021012:17 alpha,20 beta-dihydroxypregn-4-en-3-one; D004054:Diethylstilbestrol