帯広畜産大学 学術情報リポジトリ >
000研究域 >
00C基礎獣医学研究部門  >
00C01学術雑誌論文 >

このアイテムの引用には次の識別子を使用してください: http://ir.obihiro.ac.jp/dspace/handle/10322/4178

タイトル: Structure and functions of the placenta in common minke (Balaenoptera acutorostrata), Bryde’s (B. brydei) and sei (B. borealis) whales
著者: KITAYAMA, Chiyo
SASAKI, Motoki
ISHIKAWA, Hajime
MOGOE, Toshihiro
OHSUMI, Seiji
FUKUI, Yutaka
BUDIPITOJO, Teguh
KONDOH, Daisuke
KITAMURA, Nobuo
佐々木, 基樹
近藤, 大輔
北村, 延夫
キーワード: Areola
Aromatase
Placenta
Uteroferrin
Whale
発行日: 2015
出版者: 日本繁殖生物学会
誌名: Journal of Reproduction and Development
巻: 61
号: 5
開始ページ: 415-421
抄録: The structure and functions of placentas were examined in 3 species of rorqual whales, common minke (Balaenoptera acutorostrata), Bryde’s (B. brydei) and sei (B. borealis) whales, with the aim of confirming the structural characteristics of the chorion, including the presence of the areolar part, and clarifying steroidogenic activities and fetomaternal interactions in the placentas of these whales. Placentas were collected from the second phase of the Japanese Whale Research Program under Special Permit in the North Pacific (JARPN II). Histological and ultrastructural examinations revealed that these whale placentas were epitheliochorial placentas with the interdigitation of chorionic villi lined by monolayer uninucleate cells (trophoblast cells) and endometrial crypts as well as folded placentation by fold-like chorionic villi. Moreover, well-developed pouch-like areolae were observed in the placentas, and active absorption was suggested in the chorionic epithelial cells of the areolar part (areolar trophoblast cells). Berlin blue staining showed the presence of ferric ions (Fe3+) in the uterine glandular epithelial cells and within the stroma of chorionic villi in the areolar part. An immunohistochemical examination revealed tartrate-resistant acid phosphatase (TRAP; known as uteroferrin in uteri) in the cytoplasm of glandular cells and areolar trophoblast cells. This result suggested that, in cetaceans, uteroferrin is used to supply iron to the fetus. Furthermore, immunoreactivity for P450scc and P450arom was detected in trophoblast cells, but not in areolar trophoblast cells, suggesting that trophoblast cells synthesize estrogen in whale placentas. Therefore, we herein immunohistochemically revealed the localization of aromatase and uteroferrin in cetacean placentas during pregnancy for the first time.
URI: http://ir.obihiro.ac.jp/dspace/handle/10322/4178
ISSN: 1348-4400
0916-8818
権利情報: 日本繁殖生物学会
出現コレクション:00C01学術雑誌論文

このアイテムのファイル:

ファイル 記述 サイズフォーマット
sasakim61(5),415-421,2015.pdf2.97 MBAdobe PDF見る/開く

このリポジトリに保管されているアイテムはすべて著作権により保護されています。

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2006 MIT and Hewlett-Packard - ご意見をお寄せください