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Effect of 17‐α‐ethynylestradiol on germ cell proliferation in organ and primary culture of medaka ( Oryzias latipes ) testis
Author(s) -
Song Miyeoun,
Gutzeit Herwig O.
Publication year - 2003
Publication title -
development, growth and differentiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.864
H-Index - 66
eISSN - 1440-169X
pISSN - 0012-1592
DOI - 10.1046/j.1440-169x.2003.00701.x
Subject(s) - oryzias , cell growth , biology , organ culture , flow cytometry , andrology , germ cell , cell culture , microbiology and biotechnology , spermatogenesis , cell , viability assay , endocrinology , in vitro , genetics , medicine , gene
Organ cultures and primary cell cultures of medaka ( Oryzias latipes ) testis were compared with respect to cell viability and cell proliferation. The analysis by fluorescence microscopy and flow cytometry showed that in both cultures, the cells remained viable for at least 1 day and cell proliferation could be analyzed reliably by BrdU incorporation. The proliferating cells were mostly spermatogonia located at the periphery of the testis in tissue sections. Both culture systems were used to study the effect of 17‐α‐ethynylestradiol on cell proliferation. The results obtained with organ and primary cultures were consistent: low concentrations (0.01 and 1 n m ) of synthetic estrogen stimulated cell proliferation slightly, while a higher concentration (100 n m ) had an inhibitory effect. Both culture methods are suitable for the analysis of substances that might interfere with germ cell proliferation or other functions in spermatogenesis.