Review: Exploration of placentation from human beings to ocean-living species |
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| Authors: | H. Soma N. Murai K. Tanaka T. Oguro H. Kokuba I. Yoshihama K. Fujita S. Mineo M. Toda S. Uchida T. Mogoe |
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| Affiliation: | 1. Saitama Medical School, Department of Obstetrics & Gynecology, Japan;2. Saitama Medical School, Section of Electron Microscopy, Japan;3. Nihon Medical School, Chiba Hokuso Hospital, Japan;4. Tokyo Medical University, Section of Electron Microscopy, Japan;5. Tokyo Medical University, Department of Molecular Pathology, Japan;6. Okinawa Churaumi Aquarium, Japan;7. Japan Institute of Cetacean Research, Japan;1. Department of Endocrine and Neural Pharmacology, Tokyo University of Pharmacy and Life Sciences, Japan;2. Laboratory of Animal Breeding, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Japan;3. Department of Obstetrics and Gynecology, Tokyo Medical University, Japan;4. Department of Anatomic Pathology, Tokyo Medical University, Japan;1. Department of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan;2. Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan;3. Department of Cancer Information Research, Clinical Research Institute, National Kyushu Cancer Center, Fukuoka, Japan;1. Division of Maternal-Fetal Medicine and Surgery, Department of Obstetrics and Gynaecology, Hackensack University Medical Centre, Hackensack, NJ, USA;2. Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK;3. Obstetrics and Gynaecology, CHR Citadell, University of Liege, Liege, Belgium;4. Division of High Risk Pregnancy, Mackay Memorial Hospital, Taipei, Taiwan;5. Department of Obstetrics and Gynaecology, Wuxi Maternity and Child Health Hospital, Nanjing Medical University, China;6. The Nuffield Department of Obstetrics and Gynaecology, University of Oxford, Oxford, UK;7. Department of Biomedical and Molecular Sciences, Queen''s University, Kingston, Ontario, Canada;8. Placenta-Labor, Obstetrics Department, University Hospital Jena, Jena, Germany;9. Department of Pathology and Laboratory Medicine, Women & Infants Hospital/Warren Alpert Medical School of Brown University, Providence, RI, USA;10. Department of Obstetrics and Gynaecology, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zealand;11. Department of Obstetrics and Gynaecology, Chang Gung Memorial Hospital, Taipei, Taiwan;12. Department of Obstetrics and Gynaecology, Wakayama Medical University, Wakayama, Japan;13. Department of Obstetrics and Gynaecology, Hamamatsu University School of Medicine, Japan;14. Department of Obstetrics and Gynaecology, Graduate School of Medical Science, Kyushu University, Fukuoka, Japan;15. Department of Obstetrics and Gynaecology, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan;p. Department of Obstetrics and Gynaecology, School of Medicine, Keio University, Tokyo, Japan;q. Aiiku Maternal and Child Health Center Hospital, Tokyo, Japan;r. Tokai University School of Medicine, Kanagawa, Japan;s. Department of Obstetrics and Gynaecology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan;t. Department of Obstetrics and Gynaecology, Groote Schuur Hospital, Cape Town, South Africa;u. MRC/UCT Receptor Biology Unit, Institute of Infectious Disease and Molecular Medicine, Division of Medical Biochemistry, University of Cape Town, Cape Town, South Africa;v. Tokyo City University, Tokyo, Japan;w. Department of Perinatal Medicine Pregnancy Research Centre, University of Melbourne, Melbourne, Victoria, Australia;x. Department of Obstetrics and Gynaecology, Royal Women''s Hospital, Parkville, Victoria, Australia;y. Prince Henry''s Institute of Medical Research, Monash Medical Centre, Melbourne, Victoria, Australia;z. Medical College of Wisconsin, Milwaukee, WI, USA;11. Juntendo University, Tokyo, Japan;12. Department of Molecular Medicine and Anatomy, Nippon Medical School, Tokyo, Japan;13. Department of Reproductive Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan;14. Department of Obstetrics and Fetal-Maternal Medicine, Reproductive Biology Unit, Medical University of Vienna, Vienna, Austria;1. Livestock Department, Fukuoka Agricultural Research Center, Chikushino, Fukuoka, Japan;2. Pathology and Pathophysiology Research Division, National Institute of Animal Health, Tsukuba, Ibaraki, Japan;3. Department of Clinical Veterinary Science, Joint Faculty of Veterinary Medicine, Kagoshima University, Korimoto, Kagoshima, Japan;4. Department of Animal Science, Graduate School of Natural Science and Technology, Okayama University, Tsushima-naka, Okayama, Japan;5. Division of Animal Sciences, National Institute of Agrobiological Sciences, Tsukuba, Ibaraki, Japan;6. Animal Breeding and Reproduction Research Division, National Institute of Livestock and Grassland Science, Tsukuba, Ibaraki, Japan;1. Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan;2. Department of Legal Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan |
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| Abstract: | ![]()
This review covers four topics.1) Placental pathology in Himalayan mountain people. To determine morphological changes of the placenta at high altitude, pathological examination was made of 1000 Himalayan placentas obtained in Nepal and Tibet and the results compared with Japanese placentas delivered at sea level. Characteristic findings in the placental villi of the Himalayan group included high incidences of villous chorangiosis and chorangioma. These processes were clarified by ultrastructural observation.2) Placentation in Sirenians. The giant Takikawa sea cow, which lived 5 million years ago, was discovered on Hokkaido, Japan. It was an ancestor of the dugong as well as the manatees. Sirenia, the sea cow group, shares a common ancestor with Proboscidea, the elephants, even though they now inhabit quite different environments. A comparison was made of their zonary endothelial type of placentation.3) Placentation in sharks and rays. The remarkable placentation of hammerhead sharks and manta rays is described.4) Placentation in the Antarctic minke whale. Placental tissue samples of this whale were obtained from the Japan Institute of Cetacean Research. In an ultrastructural study of the utero–placental junction, microfilamental processes of the allantochorionic zone and crypt formation were visualized. |
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