Areolae of the Placenta in the Antarctic Minke Whale (Balaenoptera bonaerensis)
application/pdf In this study, we examined the existence and structure of areolae and the steroidogenesis of areolar trophoblast cells in the Antarctic minke whale placenta morphologically and immunohistochemically. Placentas were collected from the 15th, 16th and 18th Japanese Whale Research Progra...
Published in: | Journal of Reproduction and Development |
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Society for Reproduction and Development
2014
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Online Access: | https://obihiro.repo.nii.ac.jp/record/1010/files/sasakim60.62-67.pdf |
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ftobihirouniv:oai:obihiro.repo.nii.ac.jp:00001010 2024-05-19T07:31:18+00:00 Areolae of the Placenta in the Antarctic Minke Whale (Balaenoptera bonaerensis) Sasaki, Motoki 佐々木, 基樹 Amano, Yoko Hayakawa, Daisuke Tsubota, Toshio Ishikawa, Hajime Mogoe, Toshihiro Ohsumi, Seiji Tetsuka, Masafumi 手塚, 雅文 Miyamoto, Akio 宮本, 明夫 Fukui, Yutaka Budipitojo, Teguh Kitamura, Nobuo 2014 application/pdf https://obihiro.repo.nii.ac.jp/record/1010/files/sasakim60.62-67.pdf eng eng Society for Reproduction and Development doi:10.1262/jrd.2013-063 Journal of Reproduction and Development 1 60 62 67 AA10936678 09168818 https://obihiro.repo.nii.ac.jp/record/1010/files/sasakim60.62-67.pdf Reproduction and Development Antarctic minke whale Areola Balaenoptera bonaerensis Placenta Steroidogenesis VoR 2014 ftobihirouniv https://doi.org/10.1262/jrd.2013-063 2024-05-01T23:31:13Z application/pdf In this study, we examined the existence and structure of areolae and the steroidogenesis of areolar trophoblast cells in the Antarctic minke whale placenta morphologically and immunohistochemically. Placentas were collected from the 15th, 16th and 18th Japanese Whale Research Program under Special Permit in the Antarctic (JARPA) and 1st JARPA II organized by the Institute of Cetacean Research in Tokyo, Japan. The opening and cavity of fetal areolae formed by taller columnar trophoblast cells (areolar trophoblast cells) with long microvilli and a bright cytoplasm, as compared with the trophoblast cells of the chorionic villi interdigitating with the endometrial crypts, were recognized in observations of serial sections. The opening of the areolar cavity was hidden by chorionic villi with areolar trophoblast cells. Furthermore, a closed pouch-like structure lined by tall columnar cells similar to areolar trophoblast cells within the stroma of chorionic villi was noticed and continued to the areolar cavity, with the opening seen on serial sections. In a surface investigation of the chorion and endometrium by SEM, maternal (endometrial) areolae irregularly surrounded by endometrial folds were obvious. Moreover, we distinguished areolar trophoblast cells with long microvilli attached with many blebs from trophoblast cells. In our immunohistochemical observations, a steroidogenic enzyme, cytochrome P450 side chain cleavage enzyme (P450scc), was detected with strong immunoreactivity in trophoblast cells. However, areolar trophoblast cells showed weak or no immunoreactivity for P450scc. journal article Other/Unknown Material Antarc* Antarctic Antarctic Minke whale Balaenoptera bonaerensis minke whale Obihiro University: Obihiro Archives of Knowledge (OAK) Journal of Reproduction and Development 60 1 62 67 |
institution |
Open Polar |
collection |
Obihiro University: Obihiro Archives of Knowledge (OAK) |
op_collection_id |
ftobihirouniv |
language |
English |
topic |
Antarctic minke whale Areola Balaenoptera bonaerensis Placenta Steroidogenesis |
spellingShingle |
Antarctic minke whale Areola Balaenoptera bonaerensis Placenta Steroidogenesis Sasaki, Motoki 佐々木, 基樹 Amano, Yoko Hayakawa, Daisuke Tsubota, Toshio Ishikawa, Hajime Mogoe, Toshihiro Ohsumi, Seiji Tetsuka, Masafumi 手塚, 雅文 Miyamoto, Akio 宮本, 明夫 Fukui, Yutaka Budipitojo, Teguh Kitamura, Nobuo Areolae of the Placenta in the Antarctic Minke Whale (Balaenoptera bonaerensis) |
topic_facet |
Antarctic minke whale Areola Balaenoptera bonaerensis Placenta Steroidogenesis |
description |
application/pdf In this study, we examined the existence and structure of areolae and the steroidogenesis of areolar trophoblast cells in the Antarctic minke whale placenta morphologically and immunohistochemically. Placentas were collected from the 15th, 16th and 18th Japanese Whale Research Program under Special Permit in the Antarctic (JARPA) and 1st JARPA II organized by the Institute of Cetacean Research in Tokyo, Japan. The opening and cavity of fetal areolae formed by taller columnar trophoblast cells (areolar trophoblast cells) with long microvilli and a bright cytoplasm, as compared with the trophoblast cells of the chorionic villi interdigitating with the endometrial crypts, were recognized in observations of serial sections. The opening of the areolar cavity was hidden by chorionic villi with areolar trophoblast cells. Furthermore, a closed pouch-like structure lined by tall columnar cells similar to areolar trophoblast cells within the stroma of chorionic villi was noticed and continued to the areolar cavity, with the opening seen on serial sections. In a surface investigation of the chorion and endometrium by SEM, maternal (endometrial) areolae irregularly surrounded by endometrial folds were obvious. Moreover, we distinguished areolar trophoblast cells with long microvilli attached with many blebs from trophoblast cells. In our immunohistochemical observations, a steroidogenic enzyme, cytochrome P450 side chain cleavage enzyme (P450scc), was detected with strong immunoreactivity in trophoblast cells. However, areolar trophoblast cells showed weak or no immunoreactivity for P450scc. journal article |
format |
Other/Unknown Material |
author |
Sasaki, Motoki 佐々木, 基樹 Amano, Yoko Hayakawa, Daisuke Tsubota, Toshio Ishikawa, Hajime Mogoe, Toshihiro Ohsumi, Seiji Tetsuka, Masafumi 手塚, 雅文 Miyamoto, Akio 宮本, 明夫 Fukui, Yutaka Budipitojo, Teguh Kitamura, Nobuo |
author_facet |
Sasaki, Motoki 佐々木, 基樹 Amano, Yoko Hayakawa, Daisuke Tsubota, Toshio Ishikawa, Hajime Mogoe, Toshihiro Ohsumi, Seiji Tetsuka, Masafumi 手塚, 雅文 Miyamoto, Akio 宮本, 明夫 Fukui, Yutaka Budipitojo, Teguh Kitamura, Nobuo |
author_sort |
Sasaki, Motoki |
title |
Areolae of the Placenta in the Antarctic Minke Whale (Balaenoptera bonaerensis) |
title_short |
Areolae of the Placenta in the Antarctic Minke Whale (Balaenoptera bonaerensis) |
title_full |
Areolae of the Placenta in the Antarctic Minke Whale (Balaenoptera bonaerensis) |
title_fullStr |
Areolae of the Placenta in the Antarctic Minke Whale (Balaenoptera bonaerensis) |
title_full_unstemmed |
Areolae of the Placenta in the Antarctic Minke Whale (Balaenoptera bonaerensis) |
title_sort |
areolae of the placenta in the antarctic minke whale (balaenoptera bonaerensis) |
publisher |
Society for Reproduction and Development |
publishDate |
2014 |
url |
https://obihiro.repo.nii.ac.jp/record/1010/files/sasakim60.62-67.pdf |
genre |
Antarc* Antarctic Antarctic Minke whale Balaenoptera bonaerensis minke whale |
genre_facet |
Antarc* Antarctic Antarctic Minke whale Balaenoptera bonaerensis minke whale |
op_relation |
doi:10.1262/jrd.2013-063 Journal of Reproduction and Development 1 60 62 67 AA10936678 09168818 https://obihiro.repo.nii.ac.jp/record/1010/files/sasakim60.62-67.pdf |
op_rights |
Reproduction and Development |
op_doi |
https://doi.org/10.1262/jrd.2013-063 |
container_title |
Journal of Reproduction and Development |
container_volume |
60 |
container_issue |
1 |
container_start_page |
62 |
op_container_end_page |
67 |
_version_ |
1799469141748350976 |