| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2014-05-07 |
| タイトル |
|
|
タイトル |
Structure and Steroidogenesis of the Placenta in the Antarctic Minke Whale (Balaenoptera bonaerensis |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Antarctic minke whale |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Balaenoptera bonaerensis |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Morphology |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Placenta |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Steroidogenesis |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 著者 |
佐々木, 基樹
Amano, Yoko
Hayakawa, Daisuke
Tsubota, Toshio
Ishikawa, Hajime
Mogoe, Toshihiro
Ohsumi, Seiji
手塚, 雅文
宮本, 明夫
Fukui, Yutaka
Budipitojo, Teguh
Kitamura, Nobuo
|
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
There are few reports describing the structure and function of the whale placenta with the advance of pregnancy. In this study, therefore, the placenta and nonpregnant uterus of the Antarctic minke whale were observed morphologically and immunohistochemically. Placentas and nonpregnant uteri were collected from the 15th, 16th and 18th Japanese Whale Research Programme with Special Permit in the Antarctic (JARPA) and 1st JARPA II organized by the Institute of Cetacean Research in Tokyo, Japan. In the macro- and microscopic observations, the placenta of the Antarctic minke whale was a diffuse and epitheliochorial placenta. The chorion was interdigitated to the endometrium by primary, secondary and tertiary villi, which contained no specialized trophoblast cells such as binucleate cells, and the interdigitation became complicated with the progress of gestation. Furthermore, fetal and maternal blood vessels indented deeply into the trophoblast cells and endometrial epithelium respectively with fetal growth. The minke whale placenta showed a fold-like shape as opposed to a finger-like shape. In both nonpregnant and pregnant uteri, many uterine glands were distributed. The uterine glands in the superficial layer of the pregnant endometrium had a wide lumen and large epithelial cells as compared with those in the deep layer. On the other hand, in the nonpregnant endometrium, the uterine glands had a narrower lumen and smaller epithelial cells than in the pregnant endometrium. In immunohistochemical detection, immunoreactivity for P450scc was detected in most trophoblast cells, but not in nonpregnant uteri, suggesting that trophoblast epithelial cells synthesized and secreted the sex steroid hormones and/or their precursors to maintain the pregnancy in the Antarctic minke whale. |
| 書誌情報 |
en : Journal of Reproduction and Development
巻 59,
号 2,
p. 159-167,
発行日 2013
|
| 出版者 |
|
|
出版者 |
Society for Reproduction and Development |
| ISSN |
|
|
収録物識別子タイプ |
PISSN |
|
収録物識別子 |
09168818 |
| 書誌レコードID |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA10936678 |
| DOI |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
info:doi/10.1262/jrd.2012-132 |
| 権利 |
|
|
権利情報 |
Reproduction and Development |
| フォーマット |
|
|
内容記述タイプ |
Other |
|
内容記述 |
application/pdf |
| 著者版フラグ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
sasakim59.159-167.pdf (4.8 MB)
