32 results on '"Noriko Ishizaki"'
Search Results
2. Microinclusion-rich vesicular olivine in the Karoonda CK4 chondrite: transmission electron microscopy
- Author
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Kazushige Tomeoka, Noriko Ishizaki, and Ichiro Ohnishi
- Subjects
Olivine ,Mineral ,Pentlandite ,Analytical chemistry ,Chondrule ,Mineralogy ,Geology ,engineering.material ,Silicate ,chemistry.chemical_compound ,Shock metamorphism ,Geophysics ,chemistry ,Chondrite ,engineering ,Magnetite - Abstract
The Karoonda CK4 chondrite exhibits pronounced silicate darkening of matrix and chondrule mesostases. Our scanning electron microscope study showed that the Karoonda matrix contains unusual olivine, with a high density of vesicles and inclusions of mainly magnetite and pentlandite, all between 0.1 and 3 μm in diameter. The vesicular and nonvesicular olivines occur as an intermixture, and vesicularity is particularly abundant in regions that exhibit a high degree of silicate darkening. Our transmission electron microscope study revealed that the vesicular olivine is entirely crystalline and contains a high density of much smaller (< 10 to 100 nm) vesicles and inclusions of mostly pentlandite. In contrast, nonvesicular olivine contains no such inclusions. The observations indicate that the silicate darkening is caused by the dispersion of not only opaque mineral inclusions but also vesicles, and the microinclusion-rich vesicular olivine is the principal cause of the silicate darkening. The texture and mineralogy of the vesicular olivine suggest that it was formed by crystallization of melt that was produced from nonvesicular olivine by shock at a high temperature.
- Published
- 2007
3. Historical and future anthropogenic warming effects on the year 2015 droughts, fires and fire emissions of CO2 and PM2.5 in equatorial Asia.
- Author
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Hideo Shiogama, Ryuichi Hirata, Tomoko Hasegawa, Shinichiro Fujimori, Noriko Ishizaki, Satoru Chatani, Masahiro Watanabe, Mitchell, Daniel, and Eunice Lo, Y. T.
- Subjects
FIRE ,DROUGHT management ,EFFECT of human beings on climate change ,CLIMATE change mitigation ,CLIMATE change prevention ,DROUGHTS ,CLIMATE change ,FIRES - Abstract
In 2015, El Niño caused severe droughts in equatorial Asia (EA). The severe droughts enhanced fire activities in the dry seasons, leading to massive fire emissions of CO
2 and aerosols. Using large event attribution ensembles of the MIROC5 atmospheric global climate model, we suggest that historical anthropogenic warming increased the chances of meteorological droughts exceeding the 2015 observations in the EA area. Large probability increases in stronger droughts than the 2015 event are found in the ensemble simulations of 1.5 °C and 2.0 °C global warming according to the Paris Agreement goals. Further drying is projected in the 3.0 °C ensemble. We combine these experiments and empirical functions between precipitation, burned area, and fire emissions of CO2 and PM2.5 . Increases in the chances of the burned area and the emissions of CO2 and PM2.5 exceeding the 2015 observations due to anthropogenic climate change in the past are not significant. In contrast, there are significant increases in the burned area and CO2 and PM2.5 emissions even if the 1.5 °C and 2.0 °C goals are achieved. If global warming reaches 3.0 °C, as is expected from the current mitigation policies of nations, the chances of the burned area, CO2 and PM2.5 emissions exceeding the 2015 observed values become approximately 100 %, at least in the single model ensembles. We also compare changes in fire CO2 emissions due to climate changes and the land-use CO2 emission scenarios of five shared socio-economic pathways, where the climate change effects on fire are not considered. There are two main implications. First, in a national policy context, future EA climate policy will need to consider these climate change effects regarding both mitigation and adaptation aspects. Second, the consideration of fire increases would change global CO2 emissions and the mitigation strategy, which suggests that future climate change mitigation studies should take these factors into account. [ABSTRACT FROM AUTHOR]- Published
- 2019
- Full Text
- View/download PDF
4. Poster Summaries
- Author
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Kang Lihua, Jiang Yegen, Ma Haibin, Shang Junhong, Dan-Ming Chen, Zhao-hai Zeng, Xin-hua Sui, Yue-gao Hu, Wen-xin Chen, Mariangela Hungria, Rubens J. Campo, Iêda C. Mendes, Nykänen Arja, Yong-Chan Kim, Yong-Nam Pak, Saadia Naseem, Asma Aslam, Kausar A. Malik, Fauzia Y. Hafeez, Nosheen Mushtaq, Sohail Hameed, Sumera Yasmin, Ghulam Rasul, Takuji Ohyama, Atsushi Momose, Keiko Nishimura, Takahiro Hiyama, Noriko Ishizaki, Katsuya Kanbe, Kaushal Tewari, Norikuni Ohtake, Kuni Sueyoshi, Takashi Sato, Atsushi Sato, Yasuhiro Nakanishi, Shoichiro Akao, Teaumroong Neung, Sooksa-nguan Thanwalee, Thies E. Janice, Boonkerd Nantakorn, Tengyun Yao, Jinxiang Yu, Sanfeng Chen, Yanqi Chang, Jilun Li, Gui-Xiang Peng, Guo-Xia Zhang, Wei Hou, Hua-Rong Wang, Zhi-Yuan Tan, Tuo Yao, Degang Zhang, Ruijun Long, D. Kaplan, M. Azeb, Y. Akkara, G. Granot, A. Nejidat, Y. M. Heimer, Guo Yongjin, Zhu Anni, Ye Zengguang, Alexandre Boscari, Karine Mandon, Marie Christine Poggi, Daniel Le Rudulier, En Ci, Ming Gao, Yong-xiong Yu, Yoshikazu Shimoda, Maki Nagata, Fumie Furuya, Akihiro Suzuki, Mikiko Abe, Shusei Sato, Tomohiko Kato, Satoshi Tabata, Shiro Higashi, Toshiki Uchiumi, María Carmen del Vargas, Sergio Encarnación, María Lourdes de Girard, Agustín Reyes, Yolanda Mora, Jaime Mora, M. Sugawara, S. Okazaki, S. Nonaka, H. Ezura, K. Minamisawa, Elizabeth A Drew, Vadakattu V S R Gupta, David K Roget, Jui-Hsing Chou, Jo-Shu Chang, Chih-Hui Wu, Shu-Chen Chang, Wen-Ming Chen, Sheng Huang, Xue-Liang Bai, Qing-Sheng Ma, Xian-Lai Tang, and Bo Wu
- Published
- 2005
5. Ultrastructure of the parathyroid gland of the japanese lizard in the spring and summer season
- Author
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Hideo Isono, Shizuko Shoumura, Kazuko Hayashi, Tomo Yamahira, and Noriko Ishizaki
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medicine.medical_specialty ,Endoplasmic reticulum ,Vesicle ,Coated vesicle ,Biology ,Golgi apparatus ,biology.organism_classification ,Cell biology ,Gastric chief cell ,symbols.namesake ,Endocrinology ,Cytoplasm ,Internal medicine ,Takydromus tachydromoides ,medicine ,symbols ,Animal Science and Zoology ,Secretion ,Developmental Biology - Abstract
The ultrastructure of the parathyroid glands of adult Japanese lizards (Takydromus tachydromoides) in the spring and summer season was examined. The parenchyma of the gland consists of chief cells arranged in cords or solid masses. Many chief cells contain numerous free ribosomes and mitochondria, well-developed Golgi complexes, a few lysosome-like bodies, some multivesicular bodies and relatively numerous lipid droplets. The endoplasmic reticulum is mainly smooth-surfaced. Cisternae of the rough endoplasmic reticulum are distributed randomly in the cytoplasm. Small coated vesicles of 700-800 Å in diameter are found occasionally in the cytoplasm, especially in the Golgi region. The chief cells contain occasional secretory granules of 150-300 nm in diameter that are distributed randomly in the cytoplasm and lie close to the plasma membrane. Electron dense material similar to the contents of the secretory granules is observed in the enlarged intercellular space. These findings suggest that the secretory granules may be discharged into the intercellular space by an eruptocrine type of secretion. Coated vesicles (invaginations) connected to the plasma membrane and smooth vesicles arranged in a row near the plasma membrane are observed. It is suggested that such coated vesicles may take up extracellular proteins. The accumulation of microfilaments is sometimes recognized. Morphological evidence of synthetic and secretory activities in the chief cells suggests active parathyroid function in the Japanese lizard during the spring and summer season.
- Published
- 1979
6. Effects of cadmium on the ultrastructure of the mouse parathyroid gland
- Author
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Noriko Ishizaki, Shizuko Shoumura, Shinitiro Yamada, Tomo Yamahira, Kazuko Hayashi, and Hideo Isono
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Male ,medicine.medical_specialty ,Cellular activity ,Histology ,chemistry.chemical_element ,Biology ,Cytoplasmic Granules ,Parathyroid Glands ,Mice ,symbols.namesake ,Internal medicine ,medicine ,Animals ,Cadmium ,Mouse Parathyroid Gland ,Cell Membrane ,Golgi apparatus ,Mitochondria ,Gastric chief cell ,Microscopy, Electron ,medicine.anatomical_structure ,Endocrinology ,chemistry ,symbols ,Ultrastructure ,Calcium ,Parathyroid gland ,Anatomy ,Ribosomes - Abstract
Electron-microscopic studies were made on the parathyroid gland of cadmiumtreated mice. Most chief cells in treated mice were rich in free ribosomes and secretory granules compared to the control mice. In the parathyroid gland after 3 and 4 weeks of administration of cadmium, interdigitations between adjacent chief cells became more complex than in the control mice. In most chief cells of the parathyroid gland after 2, 3 and 4 weeks of administration of cadmium, the Golgi complexes associated with numerous prosecretory granules were better developed than in the control mice. These ultrastructural appearances suggest that parathyroid gland cellular activity was stimulated in response to cadmium treatment.
- Published
- 1979
7. Comptes rendus de l’Union libre des Anatomistes des Universités suisses
- Author
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Ramzy Shehata, S. Jacob, Shinitiro Yamada, M.Z. Chunaeva, Alphonse Riesenfeld, H. Heine, Everett Heath, Robert Tremaine, E.A. Poskrebysheva, Soliman F. Ayoub, Brian K. Hall, Shizuko Shoumura, Noriko Ishizaki, Gisle Fosse, Steinar Risnes, O.V. Volkova, Tomo Yamahira, Kathleen Klueber, J. Bugge, Kazuko Hayashi, Hideo Isono, Jan Cammermeyer, S. Poddar, E.P. Zaitseva, and Herbert Langdon
- Subjects
Histology ,Anatomy - Published
- 1979
8. Immunocytochemical Localization of Parathyroid Hormone in Hamster Parathyroid Gland
- Author
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Shoichi Emura, Shizuko Shoumura, Huayue Chen, Tomo Yamahira, Hideo Isono, and Noriko Ishizaki
- Subjects
Male ,medicine.medical_specialty ,Histology ,Immunocytochemistry ,Parathyroid hormone ,Hamster ,Vacuole ,law.invention ,Parathyroid Glands ,symbols.namesake ,law ,Cricetinae ,Internal medicine ,medicine ,Animals ,Mesocricetus ,Chemistry ,Golgi apparatus ,Immunohistochemistry ,Cell biology ,Microscopy, Electron ,Endocrinology ,Granular Endoplasmic Reticulum ,medicine.anatomical_structure ,Parathyroid Hormone ,symbols ,Parathyroid gland ,Anatomy ,Electron microscope - Abstract
The immunocytochemical localization of parathyroid hormone was examined in the hamster parathyroid gland by using the protein A-gold technique. Protein A-gold particles were concentratedover secretory granules, large secretory granules thought to be storage granules and Golgi vacuoles. No protein A-gold particles were detected over large vacuolar bodies and cisternae of the granular endoplasmic reticulum.
- Published
- 1988
9. Effects of Artificial Hibernation on the Ultrastructure of the Parathyroid Gland of the Summer Frog, Rana catesbiana
- Author
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Kazuko Hayashi, Katsuko Miyake, Hideo Isono, Shizuko Shoumura, and Noriko Ishizaki
- Subjects
Male ,Hibernation ,Rana catesbeiana ,Anatomy ,Biology ,Rana ,Parathyroid Glands ,medicine.anatomical_structure ,Ultrastructure ,medicine ,Animals ,Female ,Parathyroid gland ,Anura - Published
- 1978
10. Contents, Vol. 135, 1989
- Author
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Sindhu S. Jacob, U. Kestenbach, Anders Vilmann, Tamuro Masuda, Angeles Ros, Koichi Osawa, P. Köpf-Maier, Bernard Tandler, Juan A. García-Porrero, Shoichi Emura, C.R. Braekevelt, Norihiko Maeda, Gary E. Korte, Tomo Yamahira, Henning Vümann, Shizuko Shoumura, Gabriele Conti, Masaki Ito, S. Poddar, Huayue Chen, Noriko Ishizaki, Atsumi Suzuki, Chiaki Watanabe, R.K. Tanwar, Svend Kirkeby, Jay I. Perlman, Teruo Shimizu, Mieko Sashima, José L. Ojeda, Setsuko Hatakeyama, Kuniaki Toyoshima, W.O. Gross, Takahisa Sasaki, J.S. Sethi, Jody Piltz, Masanobu Satoh, Masayoshi Kumegawa, Hiroshi Suzuki, Hideo Isono, Tsunayoshi Suwd, and Clark Tsai
- Subjects
Histology ,Anatomy - Published
- 1989
11. Effects of Starvation on the Parathyroid Glands in Golden Hamsters of Different Ages, with Special Reference to the Frequency of Lipid Droplets
- Author
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Tomo Yamahira, Shoichi Emura, Noriko Ishizaki, Hideo Isono, Shizuko Shoumura, and Masaki Ito
- Subjects
Male ,Aging ,endocrine system ,medicine.medical_specialty ,Histology ,Biology ,Cytoplasmic Granules ,Parathyroid Glands ,Cricetinae ,Internal medicine ,Lipid droplet ,medicine ,Animals ,Organelles ,Starvation ,Mesocricetus ,Lipids ,Microscopy, Electron ,Endocrinology ,medicine.anatomical_structure ,Calcium ,Female ,Parathyroid gland ,Anatomy ,medicine.symptom ,Golden hamster - Abstract
The frequency of lipid droplets in the parathyroid glands of young, adult and senile golden hamsters after starvation was investigated. In the parathyroid glands of the young and senile golden hamsters, the number of lipid droplets increased to reach a peak by 2 days, then decreased slowly by 5 days after starvation, and decreased rapidly after refeeding. In the glands of adult animals it increased to reach a peak by 5 days after starvation and decreased rapidly after refeeding.These findings suggest that in the fasting condition there is a relationship between the number of lipid droplets and aging.
- Published
- 1988
12. Contents, Vol. 115, 1983
- Author
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Osamu Ohtani, R. De Bleser, E. Carvalho, H. Mestdagh, Tomo Yamahira, M. Soares, J.P. Bailleul, Noriko Ishizaki, Jill Lipsett, Takahisa Sasaki, Aiji Ohtsuka, J. Letendart, Hideo Isono, Heikki J. Helminen, Riitta Heikkilä, Per Alberius, Shoichi Emura, Shizuko Shoumura, Markku Tammi, Jukka S. Jurvelin, Tarja Kuusela, Bren Gannon, A. Dabrowski, Klaus Poeck, Rodrigues Grande, Yuji Iwasaki, Kazuko Hayashi, Ilkka Kiviranta, J.L. Mairesse, Kazuhiko Shoumura, J. Ribeiro, Bhanu Iyengar, and D. Graf von Keyserlingk
- Subjects
Histology ,Anatomy - Published
- 1983
13. Effects of Hypergravity Environment on the Parathyroid Gland of the Propranolol-Treated Golden Hamster
- Author
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Tomo Yamahira, Masaki Ito, Shoichi Emura, Noriko Ishizaki, Hideo Isono, Huayue Chen, and Shizuko Shoumura
- Subjects
Male ,medicine.medical_specialty ,Hypergravity ,Histology ,Mesocricetus ,Hamster ,Propranolol ,Biology ,Parathyroid Glands ,Microscopy, Electron ,Glandula endocrina ,Endocrinology ,medicine.anatomical_structure ,Cricetinae ,Internal medicine ,medicine ,Animals ,Calcium ,Parathyroid gland ,Anatomy ,Gravitation ,Golden hamster ,Endocrine gland ,medicine.drug - Abstract
The fine structure of the parathyroid glands of propranolol-treated hamsters subjected to 5 × gravity environment was studied. In the parathyroid glands of the propranolol-treated hamsters exposed to hypergravity environment, the volume density occupied by the Golgi complexes and cisternae of the granular endoplasmic reticulum was increased as compared to that of propranolol-treated hamsters and was decreased as compared to that of hamsters exposed to a hypergravity environment but was almost similar to that of control hamsters. In addition, many chief cells contained rich free ribosomes, abundant mitochondria and some secretory granules located in the peripheral cytoplasm. These findings suggest that the parathyroid gland which may be suppressed by treatment of propranolol and stimulated in response to a hypergravity environment indicates the secretory activity of the control parathyroid gland.
- Published
- 1989
14. Electron microscopic study of the parathyroid gland of the acetazolamide-treated mouse
- Author
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Shoichi Emura, Shizuko Shoumura, Kazuko Hayashi, Noriko Ishizaki, and Hideo Isono
- Subjects
Male ,Pathology ,medicine.medical_specialty ,Histology ,Golgi Apparatus ,Biology ,Cytoplasmic Granules ,Endoplasmic Reticulum ,Ribosome ,Parathyroid Glands ,Mice ,symbols.namesake ,Lipid droplet ,medicine ,Animals ,Cell Nucleus ,Cell Membrane ,Granule (cell biology) ,Golgi apparatus ,Lipids ,Mitochondria ,Cell biology ,Acetazolamide ,Gastric chief cell ,Microscopy, Electron ,medicine.anatomical_structure ,Cytoplasm ,Ultrastructure ,symbols ,Calcium ,Parathyroid gland ,Anatomy - Abstract
Ultrastructural aspects of the parathyroid glands of acetazolamide-treated mice were examined. Many chief cells of the treated mice are deficient in free ribosomes compared with the control mice. Most Golgi complexes are poorly developed and associated with a few prosecretory granules. However, relatively numerous secretory granules are observed in the cytoplasm, and a few secretory granules are present in the peripheral cytoplasm. Large secretory granules (storage granules), homogeneously dense bodies with a low electron density, heterogeneously dense bodies containing osmiophilic substance and/or lipid-like material, multivesicular bodies and lipid droplets have apparently increased in number in many chief cells of the experimental mice. Many transitional forms are recognized between each of the large secretory granules and the bodies mentioned above. These ultrastructural features suggest that parathyroid gland cellular activity is suppressed in response to acetazolamide treatment. In addition, correlations of the occurrence of large secretory granules and various bodies are discussed.
- Published
- 1980
15. Effects of glucocorticoid on the ultrastructure of the mouse parathyroid gland
- Author
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Yuji Iwasaki, Noriko Ishizaki, Shoichi Emura, Yuzo Kitamura, Hideo Isono, Shizuko Shoumura, Kazuko Hayashi, and Tomo Yamahira
- Subjects
medicine.medical_specialty ,Cellular activity ,Histology ,Biology ,Cytoplasmic Granules ,Dexamethasone ,Parathyroid Glands ,Mice ,Lipid droplet ,Internal medicine ,medicine ,Animals ,Glucocorticoids ,Mouse Parathyroid Gland ,Rats, Inbred Strains ,Rats ,Gastric chief cell ,Endocrinology ,medicine.anatomical_structure ,Ultrastructure ,Calcium ,Female ,Parathyroid gland ,Anatomy ,Glucocorticoid ,medicine.drug - Abstract
Ultrastructural changes in the parathyroid glands of dexamethasone-treated mice were examined. Many chief cells of the treated mice contained a decreased number of prosecretory granules, secretory granules and storage granules, and an increased number of lipid droplets, compared with the control mice. In addition, myelin-like structures associated with cisternae of the granular endoplasmic reticulum were observed in the parathyroid glands of the treated mice. These findings suggest that cellular activity of the parathyroid gland may be suppressed by dexamethasone.
- Published
- 1983
16. Contents, Vol. 119, 1984
- Author
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G. Ambrosi, César L.A. Gómez Dumm, Shamer Singh, L. Roncali, Kazuko Hayashi, A. Wagner, P.R. Atre, Yuzo Kitamura, Shoichi Emura, Tomo Yamahira, J.M. Domènech-Mateu, Ana María Cortizo, Cordula Nitsch, D Kulkarni, Karin Mews, Elma E P. de Gagliardino, J. Nebot-Cegarra, María Inés Borelli, Prateek Agrawal, Hideo Isono, M. E. Garcia, Shizuko Shoumura, Noriko Ishizaki, Yuji Iwasaki, Mark R. Simon, R. Hassler, Juan José Gagliardino, R. Padmanabhan, and Tahereh M.-Z. Rahmani
- Subjects
Histology ,Anatomy - Published
- 1984
17. Electron microscopic study of the parathyroid gland of the gecko, Gekko japonicus, in the spring and summer season
- Author
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Tomo Yamahira, Hideo Isono, Shizuko Shoumura, Yuji Iwasaki, Noriko Ishizaki, and Shoichi Emura
- Subjects
Male ,geography ,geography.geographical_feature_category ,Spring season ,Zoology ,Lizards ,Anatomy ,Biology ,biology.organism_classification ,Summer season ,Parathyroid Glands ,Glandula endocrina ,Microscopy, Electron ,medicine.anatomical_structure ,Gekko japonicus ,Spring (hydrology) ,medicine ,Animals ,Gecko ,Parathyroid gland ,Female ,Seasons ,Electron microscopic - Published
- 1986
18. Effects of isoproterenol on the fine structure of the hamster parathyroid gland
- Author
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Shizuko Shoumura, Yuji Iwasaki, Noriko Ishizaki, Shoichi Emura, Tomo Yamahira, Masaki Ito, and Hideo Isono
- Subjects
Male ,Parathyroid Glands ,Microscopy, Electron ,Mesocricetus ,Cricetinae ,6 - Ciencias aplicadas::61 - Medicina::611 - Anatomía [CDU] ,Isoproterenol ,Animals ,Parathyroid gland ,Female ,Cytoplasmic Granules - Abstract
Ultrastructural changes of the parathyroid glands of isoproterenol-treated golden hamsters were investigated. Many chief cells in the parathyroid glands after 5 and 10 minutes of administration of isoproterenol contain well-developed Golgi complexes and granular endoplasmic reticulum, numerous prosecretory granules, and many secretory granules in the peripheral cytoplasm as compared with the control animals. Many chief cells in the parathyroid glands after 1,3,6 and 12 hours of administration have poorly-developed Golgi complexes, granular endoplasmic reticulum, many secretory granules and numerous lipid droplets as compared with the control animals. The morphology of the parathyroid gland after 30 minutes and 24 hours of administration resembles that of the control animals. It is considered that isoproterenol affects the secretory activity of the parathyroid gland.
- Published
- 1988
19. lmmunocytochemical localization of parathyroid hormone in rabbit parathyroid glands
- Author
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Shizuko Shoumura, Noriko Ishizaki, Shoichi Emura, Yuji Iwasaki, Tomo Yamahira, and Hideo Isono
- Subjects
6 - Ciencias aplicadas::61 - Medicina::611 - Anatomía [CDU] ,Parathyroid gland ,Immunocytochemistry - Abstract
Immunocytochemical localization of parathyroid hormone was examined in the rabbit parathyroid gland by means of protein A-gold technique. Protein A-gold particles were observed on the secretory granules and the large secretory granules thought to be storage granules. No protein A-gold particles were observed on cisternae of the endoplasmic reticulum and the Golgi apparatus
- Published
- 1988
20. Origin of autonomic nerve fibers innervating the parathyroid gland in the rabbit
- Author
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Shoichi Emura, Kazuhiko Shoumura, Shizuko Shoumura, Hideo Isono, Noriko Ishizaki, Tomo Yamahira, Kazuko Hayashi, and Yuji Iwasaki
- Subjects
Male ,Brain Mapping ,Medulla Oblongata ,Histology ,Ganglia, Sympathetic ,Chemistry ,Rabbit (nuclear engineering) ,Autonomic innervation ,Anatomy ,Autonomic Nervous System ,Synaptic Transmission ,Parathyroid Glands ,medicine.anatomical_structure ,Nerve Fibers ,nervous system ,medicine ,Acetylcholinesterase ,Animals ,Parathyroid gland ,Rabbits ,Autonomic nerve fibers ,Horseradish Peroxidase - Abstract
The cells of origin of nerve fibers innervating the parathyroid gland were studied in the rabbit using the HRP-retrograde transport method. Numerous labeled neurons were observed in the caudal half of the ipsilateral superior cervical ganglion following HRP injection into the parathyroid gland. Furthermore, in the medulla oblongata, labeled neurons were found in the dorsal nucleus of the vagus and many of them were distributed caudal to the level of the obex.
- Published
- 1983
21. Minute esophageal granular cell tumor: a case report with immunohistochemical and ultrastructural examination
- Author
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Sakae Kan, Naoki Yoshimi, Takuj Tanaka, Qi Chen Feng, Hideki Mori, and Noriko Ishizaki
- Subjects
Adult ,Male ,Cancer Research ,Granular cell tumor ,Pathology ,medicine.medical_specialty ,Esophageal Neoplasms ,Enolase ,S100 Proteins ,General Medicine ,Biology ,medicine.disease ,Immunohistochemistry ,Neoplasms, Muscle Tissue ,medicine.anatomical_structure ,Oncology ,Cytoplasm ,Submucosa ,Eosinophilic ,medicine ,Ultrastructure ,Esophageal Granular Cell Tumor ,Humans ,Radiology, Nuclear Medicine and imaging ,Esophagus - Abstract
A small granular cell tumor (GCT) of the esophagus, which developed in a 44-year-old Japanese man and was removed by endoscopic polypectomy, is presented. Histopathologically, the tumor, located in the submucosa, was composed of uniform neoplastic cells with nuclei and abundant round or oval cytoplasm containing eosinophilic granules. An immunohistochemical examination showed positive reactions with S-100 protein, especially the beta subunit, and neuron specific enolase in the neoplastic cells. Electron microscopic observation revealed abundant electron-dense or light granules and myelin-like structures in the cytoplasm. These findings support the concept that esophageal GCT is derived from Schwann cells.
- Published
- 1988
22. Effects of hypergravity environment of the ultrastructure of the golden hamster parathyroid gland
- Author
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Masaki Ito, Shizuko Shoumura, Noriko Ishizaki, Shoichi Emura, Yuji Iwasaki, Tomo Yamahira, and Hideo Isono
- Subjects
Male ,medicine.medical_specialty ,Histology ,Hamster ,Biology ,Parathyroid Glands ,symbols.namesake ,Internal medicine ,Lipid droplet ,Cricetinae ,medicine ,Animals ,Hypergravity ,Mesocricetus ,Golgi apparatus ,Gastric chief cell ,Microscopy, Electron ,Endocrinology ,medicine.anatomical_structure ,symbols ,Ultrastructure ,Parathyroid gland ,Calcium ,Anatomy ,Golden hamster ,Gravitation - Abstract
The fine structure of the parathyroid glands of golden hamsters exposed to 2, 5 or 10 g environment for 5 h was studied. In the centrifuged hamsters, many secretory granules are located in a peripheral position just beneath the plasma membrane of chief cells, and the Golgi complexes and cisternae of the granular endoplasmic reticulum are significantly increased compared with those of control animals. There are no significant differences between the control and centrifuged animals with regard to secretory granules, large secretory granules, lysosomes, vacuolar bodies and lipid droplets. These findings suggest that the secretory activity of the parathyroid gland may be stimulated in response to hypergravity environment.
- Published
- 1988
23. Studies on the restoration of the activities of Ribonucleases by polyamines in the presence of various ribonuclease inhibitors
- Author
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Seiyu Hirose, Kazuei Igarashi, Yasuhiro Watanabe, Noriko Ishizaki, and Hiroshi Kumagai
- Subjects
RNase P ,Spermidine ,Aspergillus oryzae ,Submandibular Gland ,Biochemistry ,Ribonucleases ,medicine ,Putrescine ,Animals ,Ribonuclease ,Horses ,Ribonuclease T1 ,Submaxillary gland ,Molecular Biology ,Pancreas ,chemistry.chemical_classification ,biology ,Chemistry ,Heparin ,Substrate (chemistry) ,General Medicine ,Molecular biology ,Enzyme assay ,Rats ,Enzyme Activation ,Kinetics ,Enzyme ,Liver ,Rat liver ,Poly G ,biology.protein ,Cattle ,Spermine ,medicine.drug ,Polyribonucleotides ,Protein Binding - Abstract
The effect of polyamines on ribonucleases in the presence of various inhibitors (poly(G), heparin, and rat liver RNase inhibitor) has been studied. Bovine pancreatic RNas A and a ribonuclease from horse submaxillary gland (RNase HS) were inhibited by the inhibitors, but RNase T1 and RNase M were not inhibited. Polyamines were found to restore the activites of RNase A and RNase HS inhibited by poly(G) or heparin but not those activities inhibited by rat liver RNase inhibitor. When poly(U) and poly(C) were used as substrates, the inhibitory effects of poly(G) and heparin were greater with poly(U) than poly(C) as a substrate. However, when poly(C) was used as a substrate in the presence of either of the above inhibitors, the restoration of RNase activity by sperimine was more efficient. In fact, a stimulatory effect was observed. From the double-reciprocal plots, it was concluded that polyamines restored the activiities of RNases by increasing the availability of the substrate and enzyme to each other. The restoration of enzyme activity by polyamines occurred through the binding of the polyamines to the inhibitor and the subsequent release of enzyme from the inhibitor.
- Published
- 1977
24. Effects of ovariectomy on the ultrastructure of the parathyroid gland of the golden hamster
- Author
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Hideo Isono, Shoichi Emura, Shizuko Shoumura, Kazuko Hayashi, Noriko Ishizaki, Tomo Yamahira, Yuzo Kitamura, and Yuji Iwasaki
- Subjects
endocrine system ,medicine.medical_specialty ,Histology ,Hamster ,Biology ,Parathyroid Glands ,symbols.namesake ,Internal medicine ,Cricetinae ,medicine ,Animals ,Castration ,Mesocricetus ,Uterus ,Organ Size ,Golgi apparatus ,medicine.anatomical_structure ,Endocrinology ,symbols ,Ovariectomized rat ,Ultrastructure ,Parathyroid gland ,Calcium ,Female ,Anatomy ,Golden hamster - Abstract
Ultrastructural changes of the parathyroid glands of ovariectomized golden hamsters were investigated. In the parathyroid glands there is a decrease in the area of each cell occupied by the Golgi complex, in the number of prosecretory granules and in the tortuosity of plasma membrane as compared with those of the control golden hamsters. In addition, the area occupied by lipid droplets appears to be increased and the number of secretory granules in the peripheral cytoplasm and large vacuolar body appears to be decreased compared to those of the control animals. These features suggest that the synthesis and release of parathyroid hormone may be suppressed in many chief cells of the ovariectomized golden hamsters.
- Published
- 1984
25. Effects of starvation on the ultrastructure of the mouse parathyroid gland
- Author
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Yuji Iwasaki, Shoichi Emura, Yuzo Kitamura, Hideo Isono, Shizuko Shoumura, Noriko Ishizaki, and Tomo Yamahira
- Subjects
Starvation ,medicine.medical_specialty ,Histology ,Time Factors ,Mouse Parathyroid Gland ,Body Weight ,Mice, Inbred Strains ,Biology ,Golgi apparatus ,Parathyroid Glands ,symbols.namesake ,Mice ,Endocrinology ,Internal medicine ,Ultrastructure ,medicine ,symbols ,Animals ,Calcium ,Female ,Anatomy ,medicine.symptom - Abstract
Ultrastructural changes of the parathyroid glands of starved mice were examined. The parathyroid glands of the starved mice showed a decrease in the volume of Golgi complexes and storage granules and an increase in the volume of lipid droplets, and contained more heterogeneously dense bodies and multivesicular bodies compared with that of the control mice. In addition, the volume of mitochondria, cisternae of granular endoplasmic reticulum and secretory granules and the number of prosecretory granules appeared to be decreased compared to those of the control mice. Myelin-like structures were observed in the parathyroid glands of the starved mice. The results of our study provide support for the hypothesis that starvation exerts an inhibitory influence not only on the synthesis but also on release of parathyroid hormone.
- Published
- 1985
26. Effects of hypergravity environment on the parathyroid gland of the isoproterenol-treated hamster
- Author
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Hideo Isono, Tomo Yamahira, Shizuko Shoumura, Huayue Chen, Shoichi Emura, Masaki Ito, and Noriko Ishizaki
- Subjects
Male ,medicine.medical_specialty ,Histology ,Parathyroid hormone ,Hamster ,Golgi Apparatus ,Biology ,Cytoplasmic Granules ,Parathyroid Glands ,symbols.namesake ,Lipid droplet ,Internal medicine ,Cricetinae ,medicine ,Animals ,Hypergravity ,Mesocricetus ,Isoproterenol ,Golgi apparatus ,Gastric chief cell ,Microscopy, Electron ,Endocrinology ,medicine.anatomical_structure ,symbols ,Parathyroid gland ,Anatomy ,Endocrine gland ,Gravitation - Abstract
The ultrastructure of the parathyroid glands of hamsters subjected to 5 g environment after an intra-peritoneal injection of isoproterenol was studied. In the isoproterenol-treated hamsters exposed to hypergravity environment, the Golgi complexes, cisternae of the granular endoplasmic reticulum and lipid droplets were significantly increased and secretory granules were significantly decreased compared with those of the control group. In addition, many chief cells contained numerous prosecretory granules in the Golgi areas and several secretory granules were situated close to the plasma membrane of the chief cells. These results suggest that the synthesis and release of parathyroid hormone may be markedly stimulated in the parathyroid glands of the isoproterenol-treated hamsters exposed to hypergravity environment.
- Published
- 1989
27. Ultrastructure of the parathyroid gland of the mouse fetus after calcium chloride or ethylenediaminetetraacetic acid administration
- Author
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Hideo Isono, Shoichi Emura, Michio Arakawa, K. Kanbara, Masaki Ito, Noriko Ishizaki, Tomo Yamahira, Shizuko Shoumura, and Huayue Chen
- Subjects
medicine.medical_specialty ,Histology ,chemistry.chemical_element ,Ethylenediaminetetraacetic acid ,Calcium ,Biology ,Parathyroid Glands ,symbols.namesake ,chemistry.chemical_compound ,Calcium Chloride ,Embryonic and Fetal Development ,Mice ,Internal medicine ,medicine ,Animals ,reproductive and urinary physiology ,Edetic Acid ,Fetus ,Golgi apparatus ,Gastric chief cell ,Microscopy, Electron ,Endocrinology ,medicine.anatomical_structure ,chemistry ,embryonic structures ,symbols ,Ultrastructure ,Parathyroid gland ,Anatomy ,Endocrine gland - Abstract
Ultrastructural changes of the parathyroid glands of 18-day-old mouse fetuses after administration of calcium chloride (calcium) or ethylenediaminetetraacetic acid (EDTA) were examined. Many chief cells in the parathyroid glands of the calcium-treated mouse fetuses contained poorly developed Golgi complexes and cisternae of the granular endoplasmic reticulum and many secretory granules as compared with those of the control fetuses. Many chief cells in the glands of the EDTA-treated mouse fetuses contained well-developed Golgi complexes and cisternae of the granular endoplasmic reticulum and many prosecretory granules as compared with those of the control fetuses. These findings suggest that calcium or EDTA affects the secretory activity of the parathyroid gland of the mouse fetus.
28. Gerhard Wolf-Heidegger (1910–1986)
- Author
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Mark R. Simon, Paul S. Cooke, Noriko Ishizaki, J. Marais, D.N. Ezeasor, B. Bhanulyengar, Sandy Gould, David T. Yew, Marilyn L. Zimny, R. O'Rahilly, Hosea.F.S. Huang, Chung S. Yang, Telma Maria Tenório Zorn, D.R. Zhang, Winnie W. Y. Li, Akira Ikeda, Daniel J. Albright, T. Stene, Eugene Dabezies, Tomo Yamahira, H.S. Koppang, A. Singh, Joan T. Richtsmeier, Z.B. Luo, D.A. Luke, Ann M.C. Burgess, G.E.K. Novotny, T.O. Nogueira, Poliacu Prosé, Hitoshi Tanaka, Alan W. Bates, Hideo Isono, Shin Matsumoto, A.H.M Lohman, R.S. Misra, Masaki Ito, Shoichi Emura, E. Katchburian, James Marais, Anthony V. Boccabella, Shizuko Shoumura, J. Masty, Markus Meyenhofer, Catherine M. Field, Yuji Iwasaki, and A. Huson
- Subjects
Histology ,Anatomy - Published
- 1986
29. Subject Index Vol. 115, 1983
- Author
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Jill Lipsett, A. Dabrowski, Jukka S. Jurvelin, Yuji Iwasaki, Rodrigues Grande, Tarja Kuusela, J. Letendart, J.P. Bailleul, Hideo Isono, M. Soares, Markku Tammi, Per Alberius, Tomo Yamahira, Kazuhiko Shoumura, Heikki J. Helminen, Ilkka Kiviranta, Takahisa Sasaki, Shizuko Shoumura, Bren Gannon, J.L. Mairesse, Shoichi Emura, R. De Bleser, Riitta Heikkilä, Noriko Ishizaki, H. Mestdagh, J. Ribeiro, Klaus Poeck, Bhanu Iyengar, Kazuko Hayashi, Osamu Ohtani, D. Graf von Keyserlingk, E. Carvalho, and Aiji Ohtsuka
- Subjects
Histology ,Index (economics) ,Statistics ,Subject (documents) ,Anatomy ,Mathematics - Published
- 1983
30. Subject Index, Vol. 135, 1989
- Author
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Clark Tsai, Setsuko Hatakeyama, Juan A. García-Porrero, R.K. Tanwar, Masayoshi Kumegawa, Noriko Ishizaki, P. Köpf-Maier, Masanobu Satoh, Shoichi Emura, Tsunayoshi Suwd, Gabriele Conti, Gary E. Korte, Masaki Ito, Jay I. Perlman, José L. Ojeda, Kuniaki Toyoshima, Chiaki Watanabe, Koichi Osawa, C.R. Braekevelt, Mieko Sashima, Sindhu S. Jacob, Henning Vümann, Tomo Yamahira, U. Kestenbach, Tamuro Masuda, Huayue Chen, Atsumi Suzuki, W.O. Gross, Shizuko Shoumura, Hiroshi Suzuki, Angeles Ros, Takahisa Sasaki, S. Poddar, Svend Kirkeby, Bernard Tandler, Norihiko Maeda, Anders Vilmann, Jody Piltz, Teruo Shimizu, Hideo Isono, and J.S. Sethi
- Subjects
Histology ,Index (economics) ,Statistics ,Subject (documents) ,Anatomy ,Mathematics - Published
- 1989
31. Subject Index, Vol. 119, 1984
- Author
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P.R. Atre, Cordula Nitsch, Noriko Ishizaki, Hideo Isono, María Inés Borelli, Tahereh M.-Z. Rahmani, Karin Mews, Yuji Iwasaki, J. Nebot-Cegarra, R. Hassler, Elma E P. de Gagliardino, D Kulkarni, Shizuko Shoumura, Kazuko Hayashi, Prateek Agrawal, Ana María Cortizo, A. Wagner, Shamer Singh, Tomo Yamahira, Shoichi Emura, J.M. Domènech-Mateu, R. Padmanabhan, L. Roncali, Mark R. Simon, Yuzo Kitamura, César L.A. Gómez Dumm, Juan José Gagliardino, M. E. Garcia, and G. Ambrosi
- Subjects
Histology ,Index (economics) ,Statistics ,Subject (documents) ,Anatomy ,Mathematics - Published
- 1984
32. Electron microscopic study of the parathyroid gland of the calcium-treated hamster subjected to hypergravity environment
- Author
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Shizuko Shoumura, Shoichi Emura, Tomo Yamahira, Huayue Chen, Kenjiro Kanbara, Michio Arakawa, Hideo Isono, and Noriko Ishizaki
- Subjects
Parathyroid ,6 - Ciencias aplicadas::61 - Medicina [CDU] ,Calcium - Abstract
The ultrastructure of the parathyroid glands of calcium-treated golden hamsters subjected to 5 gravity environment was studied. In the calcium-treated animals exposed to hypergravity environment, the Golgi complexes and cisternae of the granular endoplasmic reticulum were significantly decreased compared with those of the animals exposed to hypergravity environment only and appeared to increase compared with those of the calcium-treated animals, but were almost similar to those of the control animals. In addition, many chief cells contained some prosecretory granules in the Golgi areas, some secretory granules situated close to the plasma membrane and many lysosomes. The morphology of the parathyroid glands in the calcium-treated animals exposed to hypergravity environment resembled that of the control animals. These results suggest that the parathyroid glands suppressed by treatment of calcium and stimulated in response to hypergravity environment may indicate the secretory activity of the parathyroid glands of the control animals.
- Published
- 1990
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