Abstract:
:In this work, we examined the functions of the female hormone "estrogen" on spermatogenesis of the Japanese eel (Anguilla japonica). Estradiol-17beta (E(2)), a natural estrogen in vertebrates, was present in the serum and its receptor was expressed in the testis during the whole process of spermatogenesis. Spermatogonial stem cell renewal was promoted by E(2) implantation but was suppressed by tamoxifen (an antagonist of estrogen). In vitro, 10 pg/ml of E(2) was sufficient to induce spermatogonial stem cell division in cultured testicular tissue, therefore confirming the in vivo observations. These results clearly show that estrogen is an indispensable "male hormone" in the early spermatogenetic cycle.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Miura T,Miura C,Ohta T,Nader MR,Todo T,Yamauchi Kdoi
10.1006/bbrc.1999.1494subject
Has Abstractpub_date
1999-10-14 00:00:00pages
230-4issue
1eissn
0006-291Xissn
1090-2104pii
S0006-291X(99)91494-8journal_volume
264pub_type
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