Ultrastructural study on the differentiation and development of steroid-producing cells during ovarian differentiation in the amago salmon, Oncorhynchus rhodurus
Ultrastructural study on the differentiation and development of steroid-producing cells during ovarian differentiation in the amago salmon, Oncorhynchus rhodurus
复制标题
红鲑鱼卵巢分化过程中类固醇生成细胞分化和发育的超微结构研究
DOI：
10.1016/0044-8486(93)90449-9
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发表时间：
1993
期刊：
影响因子：
4.5
通讯作者：
Y. Nagahama
中科院分区：
文献类型：
--
作者：
Masaru Nakamura;Y. Nagahama
为了探讨类固醇激素与性别分化的关系，本研究通过超微结构观察了红鲑（Oncorhynchus rhodurus）卵巢分化过程中卵巢内类固醇生成鞘细胞（SPCs）和类固醇转化颗粒细胞的初始形态和发育过程。卵母细胞向减数分裂卵母细胞的转变是在鱼孵化后20-25天的生殖腺中进行的卵巢分化。SPCs具有其他鱼类SPCs的超微结构特征，在卵巢分化开始时，在含有减数分裂卵母细胞的集群周围首次观察到SPCs。同时，在簇的基底层内也观察到颗粒状细胞。随着卵巢的进一步发育，一些SPCs和颗粒细胞在辅助细胞的外围发育。然而，随着子房的进一步发育，SPCs的细胞器并未广泛发育。这些结果表明，在阿曼戈鲑鱼卵巢分化时可能产生类固醇。
In order to examine the relationship between steroid hormones and sex differentiation, the initial appearance and development of the steroid-producing thecal cells (SPCs) and steroid-converting granulosa cells in the ovary were observed ultrastructurally during the process of ovarian differentiation in the amago salmon,Oncorhynchus rhodurus. Initial ovarian differentiation was identified by the transformation of oogonia to meiotic oocytes in the gonads of fish at 20–25 days after hatching. SPCs having the ultrastructural features of SPCs of other fishes were first observed on the periphery of clusters containing meiotic oocytes at the onset of ovarian differentiation. At the same time, granulosa cells were also observed inside the basement lamina of the clusters. Some SPCs and granulosa cells developed at the periphery of auxocytes as the ovary developed further. However, extensive development of organelles in SPCs was not observed as the ovary developed further. These results suggest the possibility of steroid production at the time of ovarian differentiation in the amago salmon.
罗非鱼卵巢分化过程中类固醇生成细胞的分化和发育
DOI：
--
发表时间：
2013
期刊：
影响因子：
--
作者：
A. Murakami;T. Shuku;S. Nishimura;K. Fujisawa and K. Nakamura;西和盛・新開章司;豊智行;下地絵理香;Nakamura M
通讯作者：
Nakamura M