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Registros recuperados: 17
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Areolae of the Placenta in the Antarctic Minke Whale (Balaenoptera bonaerensis) OAK
SASAKI, Motoki; AMANO, Yoko; HAYAKAWA, Daisuke; TSUBOTA, Toshio; ISHIKAWA, Hajime; MOGOE, Toshihiro; OHSUMI, Seiji; TETSUKA, Masafumi; MIYAMOTO, Akio; FUKUI, Yutaka; BUDIPITOJO, Teguh; KITAMURA, Nobuo; 佐々木, 基樹; 手塚, 雅文; 宮本, 明夫; 北村, 延夫.
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...
Palavras-chave: Antarctic minke whale; Areola; Balaenoptera bonaerensis; Placenta; Steroidogenesis.
Ano: 2014 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3861
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Classification of the seminiferous epithelial cycle in the sika deer (Cervus nippon) OAK
Hayakawa, Daisuke; Sasaki, Motoki; Suzuki, Masatsugu; Igota, Hiromasa; Kitamura, Nobuo; 佐々木, 基樹; 北村, 延夫.
Ano: 2009 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4131
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Immunohistochemical Localization of Steroidogenic Enzymes in the Testis of the Sika Deer (Cervus nippon) During Developmental and Seasonal Changes OAK
HAYAKAWA, Daisuke; SASAKI, Motoki; SUZUKI, Masatsugu; TSUBOTA, Toshio; IGOTA, Hiromasa; KAJI, Koichi; KITAMURA, Nobuo; 佐々木, 基樹; 北村, 延夫.
Testicular steroidogenesis and spermatogenesis during developmental and seasonal changes were investigated in male sika deer (Cervus nippon), a short-day seasonal breeder, to clarify the physiological mechanisms for reproductive function. The immunohistochemical localization of steroidogenic enzymes (P450scc, P450c17, 3βHSD and P450arom), spermatogenesis and cell proliferation were analyzed in the testes of fetal (164 to 218 days of fetal age), fawn (0 years old), yearling (1 year old) and adult (more than 2 years old) male sika deer. Three kinds of steroidogenic enzymes, P450scc, P450c17 and 3βHSD, essential for the synthesis of testosterone were located only in the Leydig cells of the testes from the fetal period, and these localizations did not change...
Palavras-chave: Developmental change; Seasonal change; Sika deer; Steroidogenic enzyme; Testis.
Ano: 2010 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2816
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Immunohistochemical localization of the cytoskeletal proteins in the testes of the lesser mouse deer (Tragulus javanicus) OAK
Sasaki, Motoki; Endo, Hideki; Kimura, Junpei; Rerkamnuaychoke, Worawut; Hayakawa, Daisuke; Bhuminand, Devkota; Kitamura, Nobuo; Fukuta, Katsuhiro; 佐々木, 基樹; 北村, 延夫.
Ano: 2010 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4132
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Mobility of the forearm in the raccoon (Procyon lotor), raccoon dog (Nyctereutes procyonoides) and red panda (Ailurus fulgens) OAK
KAMIOKA, Minao; SASAKI, Motoki; YAMADA, Kazutaka; ENDO, Hideki; OISHI, Motoharu; YUHARA, Kazutoshi; TOMIKAWA, Sohei; SUGIMOTO, Miki; OSHIDA, Tatsuo; KONDOH, Daisuke; KITAMURA, Nobuo; 佐々木, 基樹; 押田, 龍夫; 近藤, 大輔; 北村, 延夫.
The ranges of pronation/supination of forearms in raccoons, raccoon dogs and red pandas were nondestructively examined. Three carcasses of each species were used for CT analysis, and the left forearms were scanned with a CT scanner in two positions: maximal supination and maximal pronation. Scanning data were reconstructed into three-dimensional images, cross-sectional images were extracted at the position that shows the largest area in the distal part of ulna, and then, the centroids of each cross section of the radius and ulna were detected. CT images of two positions were superimposed, by overlapping the outlines of each ulna, and then, the centroids were connected by lines to measure the angle of rotation, as an index of range of mobility. The...
Palavras-chave: Forearm; Raccoon; Raccoon dog; Red panda; Rotation.
Ano: 2017 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4394
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Structure and functions of the placenta in common minke (Balaenoptera acutorostrata), Bryde’s (B. brydei) and sei (B. borealis) whales OAK
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.
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...
Palavras-chave: Areola; Aromatase; Placenta; Uteroferrin; Whale.
Ano: 2015 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4178
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Structure and Steroidogenesis of the Placenta in the Antarctic Minke Whale (Balaenoptera bonaerensis OAK
SASAKI, Motoki; AMANO, Yoko; HAYAKAWA, Daisuke; TSUBOTA, Toshio; ISHIKAWA, Hajime; MOGOE, Toshihiro; OHSUMI, Seiji; TETSUKA, Masafumi; MIYAMOTO, Akio; FUKUI, Yutaka; BUDIPITOJO, Teguh; KITAMURA, Nobuo; 佐々木, 基樹; 手塚, 雅文; 宮本, 明夫; 北村, 延夫.
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...
Palavras-chave: Antarctic minke whale; Balaenoptera bonaerensis; Morphology; Placenta; Steroidogenesis.
Ano: 2013 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3862
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The developmental plasticity of colocalization pattern of peptide YY and glucagon-like peptide-1 in the endocrine cells of bovine rectum OAK
Asadullah, Hamid,Pyarokhil; Ishihara, Miyuki; Sasaki, Motoki; Kitamura, Nobuo; 佐々木, 基樹; 北村, 延夫.
Peptide YY (PYY) and glucagon-like peptide-1 (GLP-1) are produced in endocrine cells that show distal distribution in each of small and large intestine. They are colocalized in the same endocrine cells at different ratios depending on the animal species. The present study examined the possibility of plasticity in the colocalization pattern in the bovine rectum, which is known to contain endocrine cells at a high concentration. Consecutive sections from different pre- and postnatal stages were stained immunohistochemically. The immunoreactive (IR) cells were divided into three groups: 1) cells IR for both PYY and GLP-1 (PYY/GLP-1-IR cells), 2) cells IR only for PYY (PYY-IR cells), and 3) cells IR only for GLP-1 (GLP-1-IR cells). The percentage of...
Ano: 2012 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3854
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The Lamination of the Masseter Muscle in the Water Deer ( Hydropotes inermis ) OAK
Sasaki, Motoki; Kimura, Junpei; Sohn, Joonhyuk; Nasu, Tetsuo; Kitamura, Nobuo; Yasuda, Masahiro; 佐々木, 基樹; 北村, 延夫.
Ano: 2013 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4133
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The mesencephalic trigeminal sensory nucleus is involved in acquisition of active exploratory behavior induced by changing from a diet of exclusively milk formula to food pellets in mice OAK
Ishii, Toshiaki; Furuoka, Hidefumi; Kitamura, Nobuo; Muroi, Yoshikage; Nishimura, Masakazu; 古岡, 秀文; 北村, 延夫; 室井, 喜景; 石井, 利明.
Post-weaning mice fed exclusively milk display low-frequency exploratory behavior [Ishii, T., Itou, T., and Nishimura, M. (2005) Life Sci. 78, 174-179] compared to mice fed a food pellet diet. This low-frequency exploratory behavior switched to high-frequency exploration after a switch from exclusively milk formula to a food pellet diet. Acquisition of the high-frequency exploratory behavior was irreversible. Recently, we demonstrated that the mesencephalic trigeminal nucleus (Me5) is involved in the control of feeding and exploratory behavior in mice without modulating the emotional state [Ishii, T., Furuoka, H., Itou, T., Kitamura, N., and Nishimura, M. (2005) Brain Res. 1048, 80-86]. We therefore investigated whether the Me5 is involved in acquisition...
Palavras-chave: Exploratory behavior; Me5 lesions; Weaning.
Ano: 2006 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/739
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Volatile female odors activate the accessory olfactory system of male mice without physical contact OAK
Muroi, Yoshikage; Ishii, Toshiaki; Komori, Seiichi; Kitamura, Nobuo; Nishimura, Masakazu; 室井, 喜景; 石井, 利明; 北村, 延夫.
We previously reported that male mice are more attracted to volatile odors from intact female mice than from ovarlectornized female mice. In the present study, we investigated male attraction to volatile odors from soiled bedding collected from the cages of estrous or ovariectomized female mice. There was no difference in the total time spent sniffing volatile odors from estrous and ovariectomized female mice, suggesting that female mice emit volatile odors which are not excreted into bedding. To test this possibility, we investigated c-Fos expression in the mitral cell layer and granule cell layer of the accessory olfactory bulb 60 min after exposure of male mice to volatile odors without physical contact. Volatile odors from an estrous female mouse...
Palavras-chave: Accessory olfactory bulb; Vomeronasal organ; Pheromone; C-Fos; Habituation-dishabituation test; Sexual attraction.
Ano: 2006 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/45
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ウマの消化管における内分泌細胞の免疫組織化学的研究 OAK
北村, 延夫.
Ano: 1983 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/381
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反芻類の第一胃における粘膜筋板相当組織の免疫組織化学的研究 OAK
北村, 延夫.
Ano: 1988 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/455
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家畜の腸における一酸化窒素神経の比較免疫組織化学的研究 OAK
北村, 延夫.
Ano: 2004 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/615
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牛胎児の第二胃溝におけるペプチド含有神経の免疫組織化学的研究 OAK
北村, 延夫.
Ano: 1990 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/479
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第8回国際反芻動物生理学会議に出席・発表及びギーセン大学での研究交流ならびにエディンバラ大学訪問 OAK
北村, 延夫.
Ano: 1995 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/552
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陰茎後引筋におけるペプチド含有神経の免疫組織化学的研究 OAK
北村, 延夫.
Ano: 1994 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/536
Registros recuperados: 17
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