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Sugita S, Honda R, Morota T, Kameda S, Sawada H, Tatsumi E, Yamada M, Honda C, Yokota Y, Kouyama T, Sakatani N, Ogawa K, Suzuki H, Okada T, Namiki N, Tanaka S, Iijima Y, Yoshioka K, Hayakawa M, Cho Y, Matsuoka M, Hirata N, Hirata N, Miyamoto H, Domingue D, Hirabayashi M, Nakamura T, Hiroi T, Michikami T, Michel P, Ballouz RL, Barnouin OS, Ernst CM, Schröder SE, Kikuchi H, Hemmi R, Komatsu G, Fukuhara T, Taguchi M, Arai T, Senshu H, Demura H, Ogawa Y, Shimaki Y, Sekiguchi T, Müller TG, Hagermann A, Mizuno T, Noda H, Matsumoto K, Yamada R, Ishihara Y, Ikeda H, Araki H, Yamamoto K, Abe S, Yoshida F, Higuchi A, Sasaki S, Oshigami S, Tsuruta S, Asari K, Tazawa S, Shizugami M, Kimura J, Otsubo T, Yabuta H, Hasegawa S, Ishiguro M, Tachibana S, Palmer E, Gaskell R, Le Corre L, Jaumann R, Otto K, Schmitz N, Abell PA, Barucci MA, Zolensky ME, Vilas F, Thuillet F, Sugimoto C, Takaki N, Suzuki Y, Kamiyoshihara H, Okada M, Nagata K, Fujimoto M, Yoshikawa M, Yamamoto Y, Shirai K, Noguchi R, Ogawa N, Terui F, Kikuchi S, Yamaguchi T, Oki Y, Takao Y, Takeuchi H, Ono G, Mimasu Y, Yoshikawa K, Takahashi T, Takei Y, Fujii A, Hirose C, Nakazawa S, Hosoda S, Mori O, Shimada T, Soldini S, Iwata T, Abe M, Yano H, Tsukizaki R, Ozaki M, Nishiyama K, Saiki T, Watanabe S, Tsuda Y. The geomorphology, color, and thermal properties of Ryugu: Implications for parent-body processes. Science 2019; 364:252. [PMID: 30890587 DOI: 10.1126/science.aaw0422] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 03/12/2019] [Indexed: 11/02/2022]
Abstract
The near-Earth carbonaceous asteroid 162173 Ryugu is thought to have been produced from a parent body that contained water ice and organic molecules. The Hayabusa2 spacecraft has obtained global multicolor images of Ryugu. Geomorphological features present include a circum-equatorial ridge, east-west dichotomy, high boulder abundances across the entire surface, and impact craters. Age estimates from the craters indicate a resurfacing age of [Formula: see text] years for the top 1-meter layer. Ryugu is among the darkest known bodies in the Solar System. The high abundance and spectral properties of boulders are consistent with moderately dehydrated materials, analogous to thermally metamorphosed meteorites found on Earth. The general uniformity in color across Ryugu's surface supports partial dehydration due to internal heating of the asteroid's parent body.
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Affiliation(s)
- S Sugita
- The University of Tokyo, Tokyo 113-0033, Japan. .,Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - R Honda
- Kochi University, Kochi 780-8520, Japan
| | - T Morota
- Nagoya University, Nagoya 464-8601, Japan
| | - S Kameda
- Rikkyo University, Tokyo 171-8501, Japan
| | - H Sawada
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - E Tatsumi
- The University of Tokyo, Tokyo 113-0033, Japan
| | - M Yamada
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - C Honda
- University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - Y Yokota
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Kochi University, Kochi 780-8520, Japan
| | - T Kouyama
- National Institute of Advanced Industrial Science and Technology, Tokyo 135-0064 Japan
| | - N Sakatani
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Ogawa
- Kobe University, Kobe 657-8501, Japan
| | - H Suzuki
- Meiji University, Kawasaki 214-8571, Japan
| | - T Okada
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,The University of Tokyo, Tokyo 113-0033, Japan
| | - N Namiki
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - S Tanaka
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - Y Iijima
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Yoshioka
- The University of Tokyo, Tokyo 113-0033, Japan
| | - M Hayakawa
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - Y Cho
- The University of Tokyo, Tokyo 113-0033, Japan
| | - M Matsuoka
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - N Hirata
- University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - N Hirata
- Kobe University, Kobe 657-8501, Japan
| | - H Miyamoto
- The University of Tokyo, Tokyo 113-0033, Japan
| | - D Domingue
- Planetary Science Institute, Tucson, AZ 85719, USA
| | | | - T Nakamura
- Tohoku University, Sendai 980-8578, Japan
| | - T Hiroi
- Brown University, Providence, RI 02912, USA
| | - T Michikami
- Kindai University, Higashi-Hiroshima 739-2116, Japan
| | - P Michel
- Université Côte d'Azur, Observatoire de la Côte d'Azur, Centre National de le Recherche Scientifique (CNRS), Laboratoire Lagrange, 06304 Nice, France
| | - R-L Ballouz
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,University of Arizona, Tucson, AZ 85705, USA
| | - O S Barnouin
- Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723, USA
| | - C M Ernst
- Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723, USA
| | - S E Schröder
- German Aerospace Center (DLR), Institute of Planetary Research, 12489 Berlin, Germany
| | - H Kikuchi
- The University of Tokyo, Tokyo 113-0033, Japan
| | - R Hemmi
- The University of Tokyo, Tokyo 113-0033, Japan
| | - G Komatsu
- International Research School of Planetary Sciences, Università d'Annunzio, 65127 Pescara, Italy.,Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - T Fukuhara
- Rikkyo University, Tokyo 171-8501, Japan
| | - M Taguchi
- Rikkyo University, Tokyo 171-8501, Japan
| | - T Arai
- Ashikaga University, Ashikaga 326-8558, Japan
| | - H Senshu
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - H Demura
- University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - Y Ogawa
- University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - Y Shimaki
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T Sekiguchi
- Hokkaido University of Education, Asahikawa 070-8621, Japan
| | - T G Müller
- Max-Planck-Institut für Extraterrestrische Physik, 85748 Garching, Germany
| | - A Hagermann
- University of Stirling, FK9 4LA, Scotland, UK
| | - T Mizuno
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - H Noda
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan
| | - K Matsumoto
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - R Yamada
- University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - Y Ishihara
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - H Ikeda
- Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - H Araki
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan
| | - K Yamamoto
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan
| | - S Abe
- Nihon University, Funabashi 274-8501, Japan
| | - F Yoshida
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - A Higuchi
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan
| | - S Sasaki
- Osaka University, Toyonaka 560-0043, Japan
| | - S Oshigami
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan
| | - S Tsuruta
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan
| | - K Asari
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan
| | - S Tazawa
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan
| | - M Shizugami
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan
| | - J Kimura
- Osaka University, Toyonaka 560-0043, Japan
| | - T Otsubo
- Hitotsubashi University, Tokyo 186-8601, Japan
| | - H Yabuta
- Hiroshima University, Higashi-Hiroshima 739-8526, Japan
| | - S Hasegawa
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Ishiguro
- Seoul National University, Seoul 08826, Korea
| | - S Tachibana
- The University of Tokyo, Tokyo 113-0033, Japan
| | - E Palmer
- Planetary Science Institute, Tucson, AZ 85719, USA
| | - R Gaskell
- Planetary Science Institute, Tucson, AZ 85719, USA
| | - L Le Corre
- Planetary Science Institute, Tucson, AZ 85719, USA
| | - R Jaumann
- German Aerospace Center (DLR), Institute of Planetary Research, 12489 Berlin, Germany
| | - K Otto
- German Aerospace Center (DLR), Institute of Planetary Research, 12489 Berlin, Germany
| | - N Schmitz
- German Aerospace Center (DLR), Institute of Planetary Research, 12489 Berlin, Germany
| | - P A Abell
- NASA Johnson Space Center, Houston, TX 77058, USA
| | - M A Barucci
- Laboratoire d'Etudes Spatiales et d'Instrumentation en Astrophysique (LESIA)-Observatoire de Paris, Paris Sciences et Lettres (PSL), Centre National de le Recherche Scientifique (CNRS), Sorbonne Université, Université Paris-Diderot, 92195 Meudon Principal Cedex, France
| | - M E Zolensky
- NASA Johnson Space Center, Houston, TX 77058, USA
| | - F Vilas
- Planetary Science Institute, Tucson, AZ 85719, USA
| | - F Thuillet
- Université Côte d'Azur, Observatoire de la Côte d'Azur, Centre National de le Recherche Scientifique (CNRS), Laboratoire Lagrange, 06304 Nice, France
| | - C Sugimoto
- The University of Tokyo, Tokyo 113-0033, Japan
| | - N Takaki
- The University of Tokyo, Tokyo 113-0033, Japan
| | - Y Suzuki
- The University of Tokyo, Tokyo 113-0033, Japan
| | | | - M Okada
- The University of Tokyo, Tokyo 113-0033, Japan
| | - K Nagata
- National Institute of Advanced Industrial Science and Technology, Tokyo 135-0064 Japan
| | - M Fujimoto
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Yoshikawa
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - Y Yamamoto
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - K Shirai
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - R Noguchi
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - N Ogawa
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - F Terui
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - S Kikuchi
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T Yamaguchi
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - Y Oki
- The University of Tokyo, Tokyo 113-0033, Japan
| | - Y Takao
- The University of Tokyo, Tokyo 113-0033, Japan
| | - H Takeuchi
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - G Ono
- Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - Y Mimasu
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Yoshikawa
- Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - T Takahashi
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - Y Takei
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - A Fujii
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - C Hirose
- Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - S Nakazawa
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - S Hosoda
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - O Mori
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T Shimada
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - S Soldini
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T Iwata
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - M Abe
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - H Yano
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - R Tsukizaki
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Ozaki
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - K Nishiyama
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T Saiki
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - S Watanabe
- Nagoya University, Nagoya 464-8601, Japan.,Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - Y Tsuda
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
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Mizukami T, Sunakawa Y, Arai H, Chosokabe M, Doi A, Horie Y, Hirakawa M, Saji O, Naruki S, Izawa N, Ogura T, Tsuda T, Enomoto T, Mikami S, Fujino T, Otsubo T, Nakajima T. Dynamic change of immune-related gene expression status during chemoradiotherapy in locally advanced esophageal cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy303.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Kondo H, Shinohara T, Miyoshi M, Ishii Y, Otsubo T, Takahashi N. P4592Baroreflex sensitivity could predicts the presence of left atrial low voltage zone and atrial fibrillation recurrence after pulmonary vein isolation. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p4592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Tsuru N, Otsubo T, Nakamura K, Fujimoto T, Haruta Y. PW5-4 Theta oscillation under working memory task on MEG. Clin Neurophysiol 2010. [DOI: 10.1016/s1388-2457(10)60374-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Shirahata M, Kostuk E, Otsubo T, Balbir A, Fujii K, Pichard L. Expression of BK (large conductance calcium‐activated K) channel subunits and oxygen sensitivity of glomus cells in mice. FASEB J 2010. [DOI: 10.1096/fasebj.24.1_supplement.lb663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Takuma T, Otsubo T, Kurokawa Y, Ichimaru H, Otoi T. Effects of twice-weekly follicular punctures of ovaries with or without the corpus luteum on follicular and luteal dynamics. Reprod Domest Anim 2009; 45:50-4. [PMID: 19144025 DOI: 10.1111/j.1439-0531.2008.01224.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
We investigated the effects of twice-weekly follicular punctures of ovaries with or without corpus luteum (CL) on follicular and luteal dynamics. A cross-over design was used, with each cow (seven Japanese Black beef cows) being assigned to one of the three groups at 2-month intervals. Follicular punctures were performed twice weekly for three consecutive weeks until day 20 (oestrus = day 0). All visible follicles (diameter >3 mm) in the ovaries bearing CL (ipsilateral group) or those in the contralateral ovaries (contralateral group) were aspirated. As a control, all visible follicles in both ovaries were aspirated (bilateral group). Follicular development, CL formation and progesterone concentrations in each cow were monitored from days 0 to 30. Follicular growth profiles in the punctured ovaries during/after puncture treatment were similar, irrespective of the presence of follicles in the unpunctured ovary and the CL in the punctured or unpunctured ovaries. After puncture, two cows (28.6%) each in the ipsilateral and bilateral groups did not exhibit behavioural oestrus until day 30, whereas all cows in the contralateral group exhibited oestrus. CL growth and increase in progesterone concentrations after the last follicular puncture in the bilateral group were delayed when compared with those in the ipsilateral group. Our results indicate that the presence of follicles in the unpunctured ovary and the CL in the punctured or unpunctured ovaries does not significantly influence follicular growth in punctured ovaries during/after puncture treatment. However, follicular puncture in ovaries bearing CL may disturb or delay oestrus occurrence after treatment.
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Affiliation(s)
- T Takuma
- Laboratory of Animal Reproduction, The United Graduate School of Veterinary Sciences, Yamaguchi University, Yamaguchi
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Watanabe T, Owada S, Kobayashi HP, Kawakami H, Nagaoka S, Murakami E, Ishiuchi A, Enomoto T, Jinnouchi Y, Sakurai J, Tobe N, Koizumi S, Shimamura T, Asakura T, Nakano H, Otsubo T. Protective effects of MnM2Py4P and Mn-salen against small bowel ischemia/reperfusion injury in rats using an in vivo and an ex vivo electron paramagnetic resonance technique with a spin probe. Transplant Proc 2008; 39:3002-6. [PMID: 18089309 DOI: 10.1016/j.transproceed.2007.08.091] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2006] [Revised: 06/02/2007] [Accepted: 08/06/2007] [Indexed: 11/26/2022]
Abstract
BACKGROUND Reperfusion of ischemic tissues results in the formation of toxic reactive oxygen species (ROS), such as superoxide anion, hydroxyl radicals, hydroperoxide, and peroxynitrite. ROS are potent oxidizing agents, capable of damaging cellular membranes by lipid peroxidation. In the present study, we applied an in vivo electron paramagnetic resonance (EPR)/spin probe and an ex vivo EPR technique to provide direct evidence of ROS following experimentally induced small bowel ischemia/reperfusion (I/R) injury. MATERIALS AND METHODS We used a rat model of small bowel I/R injury to explore the possibility that MnM2Py4P or Mn-salen can prevent the accumulation of ROS species following experimentally induced I/R injury. We examined the ability of MnM2Py4P and Mn-salen to scavenge radicals in living Sprague-Dawley (SD) rats using an in vivo and an ex vivo EPR technique with a spin probe. RESULTS The CP decay rates in the MnM2Py4P- and Mn-salen-treated rats were significantly higher than those in the untreated rats and almost equal to those in sham group rats. There were no significant differences between the MnM2Py4P-treated group and the Mn-salen-treated group. Superoxide scavenging activities (SSA) in the MnM2Py4P- and EUK-8-treated group were higher than those in the untreated group and almost equal to the sham group. CONCLUSION The present study suggested that the protective effects of MnM2Py4P and Mn-salen against small bowel IR injury were mediated by the inhibition of O2, H2O2, and NO production.
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Affiliation(s)
- T Watanabe
- Department of Gastroenterological and General Surgery, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan.
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Otsubo T, Akiyama Y, Yanagihara K, Yuasa Y. SOX2 is frequently downregulated in gastric cancers and inhibits cell growth through cell-cycle arrest and apoptosis. Br J Cancer 2008; 98:824-31. [PMID: 18268498 PMCID: PMC2259184 DOI: 10.1038/sj.bjc.6604193] [Citation(s) in RCA: 163] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
SOX transcription factors are essential for embryonic development and play critical roles in cell fate determination, differentiation and proliferation. We previously reported that the SOX2 protein is expressed in normal gastric mucosae but downregulated in some human gastric carcinomas. To clarify the roles of SOX2 in gastric carcinogenesis, we carried out functional characterisation of SOX2 in gastric epithelial cell lines. Exogenous expression of SOX2 suppressed cell proliferation in gastric epithelial cell lines. Flow cytometry analysis revealed that SOX2-overexpressing cells exhibited cell-cycle arrest and apoptosis. We found that SOX2-mediated cell-cycle arrest was associated with decreased levels of cyclin D1 and phosphorylated Rb, and an increased p27Kip1 level. These cells exhibited further characteristics of apoptosis, such as DNA laddering and caspase-3 activation. SOX2 hypermethylation signals were observed in some cultured and primary gastric cancers with no or weak SOX2 expression. Among the 52 patients with advanced gastric cancers, those with cancers showing SOX2 methylation had a significantly shorter survival time than those without this methylation (P=0.0062). Hence, SOX2 plays important roles in growth inhibition through cell-cycle arrest and apoptosis in gastric epithelial cells, and the loss of SOX2 expression may be related to gastric carcinogenesis and poor prognosis.
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Affiliation(s)
- T Otsubo
- Department of Molecular Oncology, Graduate School of Medicine and Dentistry, Tokyo Medical and Dental University, 1-5-45, Yushima, Tokyo 113-8519, Japan
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Oshima R, Nakano H, Katayama M, Sakurai J, Wu W, Koizumi S, Asano T, Watanabe T, Asakura T, Ohta T, Otsubo T. Modification of the hepatic mitochondrial proteome in response to ischemic preconditioning following ischemia-reperfusion injury of the rat liver. Eur Surg Res 2007; 40:247-55. [PMID: 18057903 DOI: 10.1159/000111982] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2006] [Accepted: 09/03/2007] [Indexed: 01/02/2023]
Abstract
BACKGROUND/AIM Ischemic preconditioning (IPC) may reduce hepatic ischemia-reperfusion (IR) injury, but efficacy of IPC on mitochondrial proteome is not demonstrated. We investigated how IPC modifies the mitochondrial proteome after IR injury. METHODS Rats were subjected to 25 min of portal triad crossclamping (IR group, n = 8). In the IPC group (n = 8), 10 min of temporal portal triad clamping was performed before 25 min of portal clamping. Samples were obtained after 24 h. The mitochondrial inner-membrane potential was measured by the uptake of a lipophilic cationic carbocyanine probe and mitochondrial proteome was also investigated using 2-dimensional differential in-gel electrophoresis and liquid chromatography-tandem mass spectrometry. RESULTS Mitochondrial inner-membrane potential and glutathione were lower and serum transaminase was higher in the IPC group than in the IR group. The mitochondrial precursor of aldehyde dehydrogenase 2 and alpha-methylacyl-CoA-racemase were upregulated in the IPC group in comparison to the IR group. In contrast, protein disulfide-isomerase A3 precursor, 60S acid ribosomal protein P0, carbonic anhydrase 3 and superoxide dismutase were significantly more downregulated in the IPC group than in the IR group. CONCLUSIONS A hepatoprotective effect by IPC was not shown; however, IPC caused significant up- or downregulation of several mitochondrial proteins.
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Affiliation(s)
- R Oshima
- Division of Gastroenterological Surgery, St. Marianna University Hospital, Kawasaki, Japan
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Watanabe T, Owada S, Kobayashi H, Ishiuchi A, Nakano H, Asakuta T, Shimamura T, Asano T, Koizumi S, Jinnouchi Y, Katayama M, Kamibayasi M, Murakami E, Otsubo T. Real-Time Monitoring of Nitric Oxide (NO) and pO2 Levels Under Ischemic Conditions Associated With Small Bowel Ischemia/Reperfusion Injury Using Selective Electrodes for NO and Oxygen Molecules. Transplant Proc 2007; 39:3007-9. [DOI: 10.1016/j.transproceed.2007.08.090] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2006] [Revised: 01/16/2007] [Accepted: 08/06/2007] [Indexed: 10/22/2022]
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Takuma T, Otsubo T, Kurokawa Y, Otoi T. 416 EFFECTS OF THE CORPUS LUTEUM WITHIN THE OVARY ON THE FOLLICULAR DYNAMICS AFTER FOLLICULAR ASPIRATION AND ON THE DEVELOPMENTAL COMPETENCE OF ASPIRATED OOCYTES. Reprod Fertil Dev 2007. [DOI: 10.1071/rdv19n1ab416] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The use of ultrasound-guided transvaginal follicular aspiration combined with in vitro embryo production is increasing in the commercial cattle breeding industry. However, frequent puncture of follicles can induce the dysfunction of corpora lutea (CL) (Petyim et al. 2001 J. Vet. Med. A 48, 449–463), resulting in irregular estrous intervals or absence of estrus. This study was conducted to compare follicular and oocyte characteristics in ovaries ipsilateral vs. contralateral to the CL after follicular aspiration. The experiment was performed using a crossover design with each Japanese Black cow (n = 7) assigned to each of the 3 groups. The treatment period was 30 days for each group, and successive treatments were separated by a 2-month rest period. Hence the study spanned a period of 7 months (3 treatment periods and 2 rest periods). To verify ovulation prior to each treatment, the stage of the estrous cycle in each cow was synchronized with an ovulation synchronization (Ovsynch) program. Follicular aspirations were performed 6 times (every 3 or 4 days) between Day 3 and Day 20 after GnRH administration (Day = 0) of the Ovsynch program. All cows in each group ovulated the follicle before the initiation of follicular aspiration treatment. Follicles (e3 mm in diameter) from the ovary ipsilateral (Group 1) or contralateral (Group 2) to the CL were aspirated a using B-mode ultrasound scanner equipped with a 7.5 MHz probe. As a control (Group 3), the follicles from both ovaries were aspirated, irrespective of the presence of CL. In all groups, follicular development in each cow was monitored daily from Days 0 to 31. The cumulus–oocyte complexes (COCs) collected from each cow in Group 1 (n = 158), Group 2 (n = 140), and Group 3 (n = 277) were subjected to IVM/IVF/IVC. The numbers of embryos cleaved and developed to the blastocyst stage were recorded 3 days and 8 days after IVF, respectively. The mean profiles of total visible follicles (e3 mm in diameter) in ovaries with follicular aspiration in Groups 1 and 2 were similar to those in Group 3, irrespective of the presence of CL. The average numbers of visible follicles in the ovaries with follicular aspiration 7 days after the end of follicular aspiration treatment were not different from those in the ovaries without follicular aspiration (P > 0.05; one-way ANOVA). Moreover, there were no significant differences among the groups with respect to the percentages of cleavage (57.5–65.7%) and development to the blastocyst stage (23.6–32.1%) of collected COCs (P > 0.05; chi-square analysis). These results indicate that the presence of CL within the ovaries does not affect the ovarian follicular dynamics after follicular aspiration and the developmental competence of collected COCs.
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13
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Ozawa A, Takimiya K, Otsubo T, Kobayashi T. Sub-5fs time-resolved dynamic Franck–Condon overlaps associated with the S1→S0 stimulated transition in oligothiophene 13-mer. Chem Phys Lett 2005. [DOI: 10.1016/j.cplett.2005.05.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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14
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Otsubo T, Akimoto Y, Yamada H, Koda R, Aoyama H, Tanaka K, Mimura M, Nakagome K, Kamijima K. A comparative study of the efficacy and safety profiles between fluvoxamine and nortriptyline in Japanese patients with major depression. Pharmacopsychiatry 2005; 38:30-5. [PMID: 15706464 DOI: 10.1055/s-2005-837769] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
OBJECTIVE The aim of this study was to compare the efficacy and safety profiles between fluvoxamine and nortriptyline in Japanese patients with major depression. METHODS The efficacy and safety profiles of fluvoxamine, a selective serotonin-reuptake inhibitor, and nortriptyline were compared under a single-blind fashion in 74 Japanese patients with major depression. The efficacy was assessed using the 17-item Hamilton Rating Scale for Depression (HAM-D), Clinical Global Impression Scale (CGI) severity and improvement scores, while the safety profiles were assessed using the UKU Side Effect Rating Scale at baseline, and on days 7, 14, 28 and 56. Moreover, with the aim of determining the distinct efficacy profiles of each drug, the effects on each of the factor scores extracted by the principal component analysis performed for HAM-D scores were compared between drugs. RESULTS Both drug groups showed significant amelioration of depressive symptomatology over the trial period lasting for 8 weeks. Statistical analyses revealed no significant between-group differences regarding the efficacy assessed by either HAM-D or CGI scores; however, the efficacy of nortriptyline tended to appear earlier than that of fluvoxamine. Moreover, no significant differences were obtained for the factor scores, representing 'depressed mood', 'physical symptoms' or 'sleep disturbances', although 'sleep disturbances' appeared to improve earlier in the nortriptyline group than in the fluvoxamine group. As for the safety profiles, the nortriptyline group scored a significantly higher incidence of adverse events such as dysarthria or orthostatic dizziness, as well as increased heart rate. CONCLUSIONS These findings suggest that fluvoxamine is generally comparable to nortriptyline in its efficacy and superior in its safety profile, in accordance with findings obtained in previous comparative clinical trials conducted in Caucasian populations.
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Affiliation(s)
- T Otsubo
- Department of Psychiatry, Showa University School of Medicine, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8566, Japan
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15
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Otsubo T, Gray R, Boekelheide V. Bridged [18]annulenes. 12b,12c,12d,12e,12f,12g-Hexahydrocoronene and its mono- and dibenzo analogs. Ring-current contribution to chemical shifts as a measure of degree of aromaticity. J Am Chem Soc 2002. [DOI: 10.1021/ja00476a031] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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DuVernet RB, Wennerstrom O, Lawson J, Otsubo T, Boekelheide V. Bridged [18]annulenes. A study of the synthesis and properties of 12c,12d,12e,12f-tetrahydrobenzo[g,h,i]perylene and its analogs. J Am Chem Soc 2002. [DOI: 10.1021/ja00476a032] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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17
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Takasaki K, Yamamoto M, Otsubo T, Katagiri S, Saito A. Eight multicentric hepatocellular carcinomas occurring in the same segment of the liver. J Hepatobiliary Pancreat Surg 2002; 8:383-6. [PMID: 11521186 DOI: 10.1007/s005340170013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2000] [Accepted: 04/16/2001] [Indexed: 10/27/2022]
Abstract
We present a rare case of eight multicentric hepatocellular carcinomas (HCCs) occurring in the same segment of the liver. In a 66-year-old Japanese man, multiple liver tumors were detected during follow-up of chronic hepatitis C infection, and he was admitted to our hospital in 1995. Ultrasonography (US) showed eight tumors, each measuring between 10 and 15 mm in diameter, in the right lobe, and a 10-mm tumor in the left lobe. Angio-ultrasonography (US) showed no enhancement of the tumors, and multicentric occurrence was suspected. Portal angio-US showed eight tumors in the right lobe located in the anterior segment. Accordingly, anterior segmentectomy and partial resection of the S3 subsegment were performed, in December, 1995. On histological examination, all eight tumors in the anterior segment and the tumor in the S3 subsegment were well differentiated HCC. The liver parenchyma showed cirrhosis. The grade and stage of hepatitis did not differ between the anterior segment and the S3 subsegment, but irregular regeneration of hepatocytes was more prominent in the anterior segment. The multicentric occurrence of HCCs in the anterior segment may be related to the more severe damage caused by chronic hepatitis in the anterior segment than in the left lobe of the liver.
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18
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Yamamoto M, Takasaki K, Otsubo T, Katsuragawa H, Katagiri S. Recurrence after surgical resection of intrahepatic cholangiocarcinoma. J Hepatobiliary Pancreat Surg 2001; 8:154-7. [PMID: 11455472 DOI: 10.1007/s005340170039] [Citation(s) in RCA: 94] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2000] [Accepted: 12/01/2000] [Indexed: 12/20/2022]
Abstract
We aimed to assess the patterns of recurrence after surgery for intrahepatic cholangiocarcinoma (ICC) and the outcomes of treatment in patients with recurrence. From 1981 to 1999, 123 patients with ICC underwent hepatectomy. The 3-year and 5-year survival rates were significantly higher in patients after curative resection (n = 56; 53%, 50%) than in patients after noncurative resection (n = 67; 7%, 2%; P < 0.0001). In 54 patients followed-up after curative resection, the rate of recurrence after surgery was 46%. The recurrences were in the liver (56%), abdomen (disseminated; 24%), and lymph nodes (20%). The rates of recurrence were significantly higher in patients with various classifications of mass-forming ICC tumors (P = 0.039) than in those with other types of tumors, and in patients with tumors over 3 cm in greatest diameter than in those with tumors 3 cm or less (P = 0.006). Hepatic recurrence, abdominal dissemination, and intraductal recurrence were significantly related to tumors that included mass-forming ICC (P = 0.002), tumors that included periductal infiltrating ICC (P = 0.009), and tumors that included intraductal growth ICC (P = 0.038), respectively. Seven patients with recurrence underwent radiation, chemotherapy, immunotherapy, or surgical resection. Only 2 patients, with intrahepatic metastasis and intraductal recurrence, respectively, had good outcomes after surgery. The effectiveness of other treatments has not been established.
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Affiliation(s)
- M Yamamoto
- Department of Surgery, Institute of Gastroenterology, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo 162-8666, Japan
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19
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Zhu L, Tang H, Harima Y, Yamashita K, Hirayama D, Aso Y, Otsubo T. Electrochemical properties of self-assembled monolayers of tripod-shaped molecules and their applications to organic light-emitting diodes. Chem Commun (Camb) 2001:1830-1. [PMID: 12240336 DOI: 10.1039/b105922j] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Self-assembled monolayers of a tripod-shaped conjugated-thiol grafted onot Au(111) substrates are found to show electrochemically reversible oxidation and reduction and to improve electroluminescence performances of organic light-emitting diodes.
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Affiliation(s)
- L Zhu
- Faculty of Integrated Arts and Sciences, Hiroshima University, Higashi-Hiroshima 739-8521, Japan
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20
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Tsubaki K, Morimoto T, Otsubo T, Kinoshita T, Fuji K. Synthesis, structure, and ion-binding properties of new tetraoxacalix[3]arenes. J Org Chem 2001; 66:4083-6. [PMID: 11375043 DOI: 10.1021/jo0100502] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- K Tsubaki
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
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21
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Migita K, Aratake K, Yoneda M, Tsukada T, Ida H, Sakai M, Shimada H, Otsubo T, Eguchi K. Effects of hemodialysis on advanced bony tophi in a tophaceous gout patient with chronic renal failure. Clin Exp Rheumatol 2001; 19:359-60. [PMID: 11407103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
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22
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Abstract
Cycloenantiomeric hexahomooxacalix[3]arenes with different substituents on the three upper rims were synthesized for the first time by fixing their conformation into a cone. A cycloenantiomeric hexahomooxacalix[3]arene 6 was resolved into both enantiomeric forms and chiroptically characterized. Preliminary 1H-NMR studies indicated that the optically resolved cycloenantiomer 6 could discriminate the enantiomers of hydrochloride of phenylalanine ethyl ester.
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Affiliation(s)
- K Tsubaki
- Institute for Chemical Research, Kyoto University, Uji, Japan
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23
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Sakamoto H, Inoue K, Shimada M, Yoshida H, Otsubo T, Miyaoka H, Kamizima K, Ishii M, Mitamura K. [Depression during interferon therapy in renal cell cancer patients--comparison with chronic hepatitis C patients]. Nihon Hinyokika Gakkai Zasshi 2000; 91:611-7. [PMID: 11068424 DOI: 10.5980/jpnjurol1989.91.611] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND AND PURPOSE Depression is well known as one of the psychiatric complications of interferon (IFN) therapy in patients with chronic active hepatitis C. We compared the psychiatric status during interferon therapy between patients with renal cell cancer (RCC) and those with chronic active hepatitis C. METHODS The psychiatric status of 40 patients with renal cell cancer, 36 who were subjected to radical nephrectomy and 4 who were not because of the presence of distant metastasis and other complicated underlying diseases, was assessed by psychiatrists before and at 2, 4, 12 and 24 weeks after the start of IFN therapy according to the major depressive episode diagnostic criteria listed in the DSM-III-R and the Hamilton Depression Scale (HDS). The mental aspect was measured using the Eysenk Personality Questionnaire (EPQ) before IFN therapy, and the results were compared with those obtained in 85 hepatitis C patients evaluated according to the same protocol for psychiatric assessment. RESULTS Eight of the 40 patients were diagnosed as having depression before IFN therapy and 5 of them became even more depressed 2 weeks after the start of IFN therapy. Nine patients were found to be depressed after the start of IFN therapy, 7 of them were diagnosed before 4 weeks of therapy. All the patients needed treatment for depression: discontinuation of IFN therapy in 4, decrement of the IFN dose in 8, and psychiatric drug medication in 13. The patients who suffered from depression had significantly higher scores in neuroticism (EPQ) before IFN therapy than those who did not become depressed. There was no difference in age, sex or cancer stage between the two groups. The occurrence of depression in RCC patients was the same as that observed in hepatitis C patients receiving IFN therapy. But in RCC patients the depressive state was diagnosed earlier and was more severe than that observed in hepatitis C patients. CONCLUSION Urologists should be aware of the psychiatric symptoms of RCC patients under IFN therapy just as in hepatitis patients. The depression in RCC patients was considered to be related to the cancerous disease itself which may explain its higher degree of severity, as compared to hepatitis C patients.
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Affiliation(s)
- H Sakamoto
- Department of Urology, Showa University School of Medicine
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24
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Mizokami Y, Narushima K, Shiraishi T, Otsubo T, Narasaka T, Matsuoka T. Non-Helicobacter pylori ulcer disease in rheumatoid arthritis patients receiving long-term NSAID therapy. J Gastroenterol 2000; 35 Suppl 12:38-41. [PMID: 10779216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Helicobacter pylori and nonsteroidal antiinflammatory drugs (NSAIDs) are considered the major causes of peptic ulcer. If ulcers are not attributable to H. pylori, most are thought to be attributable to NSAIDs. We have previously reported that rheumatoid arthritis (RA) patients taking NSAIDs long term (NSAIDs group) are more likely to develop gastric ulcers, which commonly occur in the gastric antrum. In addition, the morphology of gastric ulcers in the NSAIDs group differs from that in the non-NSAIDs group (control group), in whom NSAIDs are not involved in the occurrence of gastric ulcers. In this study, we compared gastric ulcers in the NSAIDs group with those in the control group in terms of H. pylori infection. The positive rate of H. pylori in gastric ulcers was significantly lower in the NSAIDs group than in control group (53.6% vs 91.5%). At the ulcer site they were seen significantly less often in the antrum than in either the angle or body of the stomach (35% vs 100%) in the NSAIDs group. On the other hand, the H. pylori-positive rate for ulcers in the antrum did not differ significantly from that in the angle and body of the stomach (81.8% vs 93.8%) in the control group. These findings suggest that H. pylori plays little role in antral ulcers in those taking NSAIDs.
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Affiliation(s)
- Y Mizokami
- Department of Internal Medicine 5, Tokyo Medical University Kasumigaura Hospital, Inashiki, Ibaraki, Japan
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25
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Kure M, Mizokami Y, Shiraishi T, Otsubo T, Kariya Y, Shirai K, Nakamura H, Takeyama H, Matsuoka T, Kusama H. [A case of clear cell carcinoma of the hepatic bile duct with production of alpha-fetoprotein (AFP)]. Nihon Shokakibyo Gakkai Zasshi 2000; 97:936-40. [PMID: 10934880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Affiliation(s)
- M Kure
- 5th Department of Internal Medicine, Tokyo Medical University, Kasumigaura Hospital
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Tsubaki K, Mukoyoshi K, Otsubo T, Fuji K. The '2+1' construction of homooxacalix[3]arenes possessing different substituents on their upper rims. Chem Pharm Bull (Tokyo) 2000; 48:882-4. [PMID: 10866155 DOI: 10.1248/cpb.48.882] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Several homooxacalix[3]arenes possessing different substituents on their upper rims were synthesized in yields of 7-20% by a condensation reaction between the p-substituted-phenol dimer and monomer under acidic high-dilution conditions.
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Affiliation(s)
- K Tsubaki
- Institute for Chemical Research, Kyoto University, Uji, Japan
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Inoue Y, Mihara T, Matsuda K, Tottori T, Otsubo T, Yagi K. Absence of simple partial seizure in temporal lobe epilepsy: its diagnostic and prognostic significance. Epilepsy Res 2000; 38:133-8. [PMID: 10642041 DOI: 10.1016/s0920-1211(99)00081-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The diagnostic and prognostic significance of the absence of simple partial seizures (SPS) immediately preceding complex partial seizures (CPS) was examined in patients with temporal lobe epilepsy. The status of self-reported SPS in 193 patients with temporal lobe epilepsy who had surgical therapy more than 2 years ago was reviewed. Before surgery, 37 patients never experienced SPS before CPS (Group A), 156 patients either always or occasionally had SPS before CPS (Group B). The frequency of mesial temporal sclerosis (MTS) was lower and the age at onset of epilepsy was higher in Group A. The seizure focus was in the language-dominant temporal lobe in 73% of the cases in Group A, compared with 40% in Group B. The surgical outcome did not differ between the two groups. The findings suggest that temporal lobe seizures without preceding SPS tend to originate in the language-dominant temporal lobe that contains a pathologic etiology other than MTS, especially in the lateral temporal lobe. The surgical outcome in patients without SPS is similar to that in patients with SPS.
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MESH Headings
- Adolescent
- Adult
- Aphasia/etiology
- Brain Neoplasms/complications
- Child
- Child, Preschool
- Deja Vu
- Dominance, Cerebral
- Electroencephalography
- Epilepsies, Partial
- Epilepsy, Complex Partial/diagnosis
- Epilepsy, Complex Partial/etiology
- Epilepsy, Complex Partial/pathology
- Epilepsy, Complex Partial/physiopathology
- Epilepsy, Complex Partial/surgery
- Epilepsy, Temporal Lobe/diagnosis
- Epilepsy, Temporal Lobe/etiology
- Epilepsy, Temporal Lobe/pathology
- Epilepsy, Temporal Lobe/physiopathology
- Epilepsy, Temporal Lobe/surgery
- Humans
- Infant
- Intracranial Arteriovenous Malformations/complications
- Language
- Memory/physiology
- Middle Aged
- Prognosis
- Sclerosis
- Temporal Lobe/blood supply
- Temporal Lobe/pathology
- Temporal Lobe/physiopathology
- Treatment Outcome
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Affiliation(s)
- Y Inoue
- National Epilepsy Center, Shizuoka Higashi Hospital, Japan.
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Miyazaki S, Takasaki K, Yamamoto M, Tsugita M, Otsubo T. Liver regeneration and restoration of liver function after partial hepatectomy: the relation of fibrosis of the liver parenchyma. Hepatogastroenterology 1999; 46:2919-24. [PMID: 10576373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
BACKGROUND/AIMS Patients who survive partial hepatectomy sometimes have unsatisfactory liver regeneration and restoration of liver function. Although the extent of resection should be adjusted to attain favorable liver regeneration and restoration of liver function, a guiding principle for this has not been established. METHODOLOGY Seventy patients with hepatic tumors associated with liver disorders of various severity who underwent hepatectomy were studied. We calculated the removal rate of the liver and the regeneration rate of the remnant liver using computed tomography. The liver function was investigated using ICG R-15 (retention rate of indocyanine green). Liver disorder was classified into 4 groups, according to the severity of fibrosis. RESULTS The regeneration rates of the remnant liver indicated a significant decline in patients with severe fibrosis. In the no fibrosis and mild fibrosis groups, an increased removal rate was associated with increased regeneration rate, and post-operative ICG R-15 improved with time. However, in the moderate fibrosis and severe fibrosis groups, an increased removal rate was not associated with increased regeneration rate, and post-operative ICG R-15 showed no change or became worse with time. CONCLUSIONS Severe fibrosis of the liver parenchyma is associated with poorer regeneration of the remnant liver leading to poor restoration of post-operative liver function. The severity of fibrosis is useful as a predictive factor for liver regeneration and restoration of liver function after partial hepatectomy.
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Affiliation(s)
- S Miyazaki
- Department of Surgery, Institute of Gastroenterology, Tokyo Women's Medical College, Japan
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Otsubo T, Maesaki S, Hossain MA, Yamamoto Y, Tomono K, Tashiro T, Seki J, Tomii Y, Sonoke S, Kohno S. In vitro and in vivo activities of NS-718, a new lipid nanosphere incorporating amphotericin B, against Aspergillus fumigatus. Antimicrob Agents Chemother 1999; 43:471-5. [PMID: 10049253 PMCID: PMC89146 DOI: 10.1128/aac.43.3.471] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We evaluated the in vitro and in vivo potencies of a new lipid nanosphere that incorporates amphotericin B (AmB), NS-718, against Aspergillus fumigatus. The in vitro activity of NS-718 (the MIC at which 90% of strains are inhibited [MIC90], 0.25 microgram/ml) against 18 isolates of A. fumigatus was similar to that of deoxycholate AmB (D-AmB; Fungizone; MIC90, 0.25 microgram/ml), but NS-718 was more potent than liposomal AmB (L-AmB; AmBi-some; MIC90, 1.0 microgram/ml). The in vivo efficacy of NS-718 in a rat model of invasive pulmonary aspergillosis was compared with those of D-AmB and L-AmB. A low dose (1 mg/kg of body weight) of L-AmB was ineffective (survival rate, 0%), although equivalent doses of D-AmB and NS-718 were more effective (survival rate, 17%). However, a higher dose of NS-718 (3 mg/kg) was more effective (survival rate, 100%) than equivalent doses of D-AmB and L-AmB (survival rate, 0%). To explain these differences, pharmacokinetic studies showed higher concentrations of AmB in the plasma of rats treated with NS-718 than in the plasma of those treated with D-AmB. Our results suggest that NS-718, a new preparation of AmB, is a promising antifungal agent with activity against pulmonary aspergillosis.
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Affiliation(s)
- T Otsubo
- Second Department of Internal Medicine, Nagasaki University School of Medicine, Japan
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Tojimbara T, Fuchinoue S, Nakajima I, Koike T, Abe M, Tsugita T, Otsubo T, Tanaka K, Agishi T, Takasaki K. Analysis of postoperative liver function of donors in living-related liver transplantation: comparison of the type of donor hepatectomy. Transplantation 1998; 66:1035-9. [PMID: 9808488 DOI: 10.1097/00007890-199810270-00012] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
BACKGROUND There is a potentially significant risk to the donor in living-related liver transplantation. METHODS We analyzed surgical risk and stress to 35 donors in living-related liver transplantation with special reference to the types of donor hepatectomy. Donor surgery was performed in one of three ways: (1) lateral segmentectomy without ligation of the middle hepatic vein (MHV) in the remnant liver (group 1, n=21); (2) lateral segmentectomy with ligation of MHV in the remnant liver (group 2, n=6); and (3) left lobectomy with MHV (group 3, n=8). RESULTS No critical complications were observed in any group. The postoperative enzyme levels in group 2 were significantly higher than those in groups 1 and 3 (P<0.01). Although blood loss was covered by autologous blood transfusion in the first six cases, no banked blood was transfused in any of the cases. Surgical duration was significantly longer and blood loss was significantly greater in group 3 than in group 1 (P<0.05). Follow-up computed tomography showed atrophic changes in segment IV in groups 1 and 2. No remarkable changes were seen in segments V or VIII in any of the three groups. CONCLUSION Regardless of the donor hepatectomy procedure, serious complications did nor occur after surgery. Although it should be noted that the type of donor hepatectomy affects postoperative donor liver function, left lateral segmentectomy with ligation of MHV in the remnant liver is a useful method for obtaining liver grafts from living-related donors who have unusual anatomic variations of the hepatic veins.
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Affiliation(s)
- T Tojimbara
- Department of Surgery III, Tokyo Women's Medical University, Japan
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Noda I, Fujieda S, Saito H, Saito T, Otsubo T, Yagita M. Enhancement of cytolytic activity of human peripheral blood lymphocytes by sodium periodate (IO4) possible involvement of protein kinase C. Int J Immunopharmacol 1998; 20:15-27. [PMID: 9717079 DOI: 10.1016/s0192-0561(97)00111-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Sodium periodate (IO4) exerts a number of biological effects including the enhancement of lymphocyte activation. In this study, we investigated its effects on cytotoxicity of human peripheral blood lymphocytes (PBL) and explored the mechanism whereby it exerted these effects. In vitro treatment of human PBL with IO4 augmented their cytotoxicity against K562 myelogenous leukemia cells. IO4 oxidative treatment increased the frequency of effector-to-target cell binding. It also increased cellular ATP levels in effector cells, suggesting that the post-binding cytolytic functions of these cells were also enhanced after treatment with IO4. Moreover, IO4 treatment significantly increased the protein kinase C (PKC) activity of effector cells and induced the translocation of activity in the membrane fraction from the cytosol. H-7, a potent PKC inhibitor, significantly reduced this enhancement of membrane-associated PKC activity at 10 microM and significantly reduced the enhanced cytotoxicity of PBL at the same concentration. These results indicated that IO4 enhanced the binding capacity and post-binding cytolytic functions of PBL and that PKC activation was one mechanism to explain the IO4-induced cellular activation.
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Affiliation(s)
- I Noda
- Department of Otolaryngology, Fukui Medical University, Japan.
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33
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Otsubo T, Maruyama K, Maesaki S, Miyazaki Y, Tanaka E, Takizawa T, Moribe K, Tomono K, Tashiro T, Kohno S. Long-circulating immunoliposomal amphotericin B against invasive pulmonary aspergillosis in mice. Antimicrob Agents Chemother 1998; 42:40-4. [PMID: 9449258 PMCID: PMC105453 DOI: 10.1128/aac.42.1.40] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
We investigated the efficacy of long-circulating immunoliposomal amphotericin B (AmB) against invasive pulmonary aspergillosis in mice using three types of liposomal AmB: conventional liposomal AmB (AmBisome), a long-circulating liposomal AmB and prepared by coating the liposome surface with polyethylene glycol (PEG; PEG-L-AmB), long-circulating immunoliposomal AmB (34A-PEG-L-AmB). The survival rates for mice with invasive pulmonary aspergillosis treated with an intravenous dose of 2 mg of AmBisome, PEG-L-AmB, or 34A-PEG-L-AmB per kg of body weight were 16.7, 83.3, and 100%, respectively. Treatment with 34A-PEG-L-AmB produced a marked reduction in the number of Aspergillus fumigatus organisms in the lungs. Pharmacokinetic studies showed the presence of high AmB concentrations in the plasma of mice treated with PEG-L-AmB (40.8 microg/ml) and in the lungs of mice treated with 34A-PEG-L-AmB (42.3 microg/g). We conclude that 34A-PEG-L-AmB, a long-circulating immunoliposomal AmB, is a promising form of AmB against invasive pulmonary aspergillosis.
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Affiliation(s)
- T Otsubo
- Second Department of Internal Medicine, Nagasaki University School of Medicine, Sakamoto, Japan
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Mihara T, Matsuda K, Tottori T, Otsubo T, Kubota Y, Inoue Y, Watanabe Y, Hiyoshi T, Yagi K. [Focal cortical dysplasia and epilepsy surgery]. No To Hattatsu 1997; 29:134-44. [PMID: 9071191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
We conducted corticectomy in twenty-five patients with intractable partial epilepsy due to focal cortical dysplasia (FCD). MRI could not detect FCDs in three patients, interictal SPECT, however, revealed hypoperfusion corresponding to FCDs in two of these patients, while the FCD in one remaining patient was histologically identified in a resected specimen. The location of FCDs was as follows: the frontal lobe in sixteen patients, the temporal in five, the occipital in two, fronto-parietal in one, and the temporo-parietal in one. Prior to the surgery, twenty-one patients underwent invasive long-term intracranial EEG/CCTV monitoring. Of the fourteen patients who were tracked for longer than 2 years following surgery, eleven belonged to Class I according to Engel's criteria, two to Class II, and one to Class III. We compared intracranial EEG findings (interictal and ictal) between these twenty-one patients and eight patients with frontal lobe epilepsy resulting from different lesions. The results of this comparison, together with the seizure outcome following surgery, indicated that FCD is intrinsically epileptogenic. The invasive long-term monitoring should, as a rule, be performed in all patients with FCDs prior to the corticectomy.
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Affiliation(s)
- T Mihara
- Department of Neurosurgery, National Epilepsy Center, Shizuoka Higashi Hospital
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37
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Hossain MA, Miyazaki T, Mitsutake K, Kakeya H, Yamamoto Y, Yanagihara K, Kawamura S, Otsubo T, Hirakata Y, Tashiro T, Kohno S. Comparison between Wako-WB003 and Fungitec G tests for detection of (1-->3)-beta-D-glucan in systemic mycosis. J Clin Lab Anal 1997; 11:73-7. [PMID: 9058239 PMCID: PMC6760737 DOI: 10.1002/(sici)1098-2825(1997)11:2<73::aid-jcla1>3.0.co;2-l] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/1996] [Accepted: 09/05/1996] [Indexed: 02/03/2023] Open
Abstract
The limulus factor G reacts with (1-->3)-beta-D-glucan, a major structural component of fungal cell walls. The Fungitec G test is a colorimetric assay that measures the concentration of (1-->3)-beta-D-glucan and is used as a serodiagnostic test for deep mycosis. Wako-WB003 is another assay for (1-->3)-beta-D-glucan that determines the change in turbidity of the gelatin reaction of limulus factor G with (1-->3)-beta-D-glucan. In five rabbits inoculated intravenously with 1 x 10(7) CFU of Candida albicans, the concentration of (1-->3)-beta-D-glucan measured by the fungitec G test increased gradually reaching a peak of 660.9 +/- 427.9 pg/ml (mean +/- SD) 4 days after inoculation, but to 42.225 +/- 41.275 ng/ml on day 6 in the Wako-WB003 test. In one rabbit challenged intravenously with 5 x 10(6) CFU of C. albicans, (1-->3)-beta-D-glucan increased to 101.5 pg/ml on day 4 on the fungitec G test, whereas the level remained below the detection limit of the Wako-WB003 test throughout the course of the disease. We also detected high concentrations of (1-->3)-beta-D-glucan in 11 patients with candidemia, 4 with suspected candidemia, 1 with invasive pulmonary aspergillosis, and 12 patients with aspergilloma. The concentration of (1-->3)-beta-D-glucan measured by the Fungitec G test was > 150, > 1006.8; 312.1, and 55.6 +/- 37.4 pg/ml (range, 20.1-138.0 pg/ml), and by the Wako-WB003 test > 153.000, > 17.70, 153.000 and 2.645 +/- 7.248 ng/ml (range, < 25.20 ng/ml) in these patients, respectively. In contrast, the concentration of (1-->3)-beta-D-glucan in 9 patients with pulmonary cryptococcosis and 6 with superficial candida colonization ranged from < 13.2 and < 15.3 pg/ml in the Fungitec G test and < 0.53 and < 0.12 ng/ml in Wako-WB003 test. There was a weak relationship between the concentration of (1-->3)-beta-D-glucan measured by the Fungitec G test and Wako-WB003 test (r = 0.521). Our results indicate that the sensitivity of the Wako-WB003 test is lower than that of the Fungitec G test.
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Affiliation(s)
- M A Hossain
- Second Department of Internal Medicine, Nagasaki University School of Medicine, Japan
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Abstract
The authors reports a case of a 33-year-old woman who had a relapse and worsening of panic disorder following a single injection of methamphetamine after a long period of remission. Her first panic attack had occurred when she was a 14-year-old high school student, but the course had persisted only for 1 month. Soon after an intravenous injection of methamphetamine, she had a relapse of panic disorder, and depression and agoraphobia developed. Psychotropic medication was not fully effective.
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Affiliation(s)
- A Iwanami
- Department of Psychiatry, Showa University School of Medicine, Tokyo, Japan
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Otsubo T, Miyaoka H, Kamijima K, Onuki M, Ishii M, Mitamura K. [Depression during interferon therapy in chronic hepatitis C patients--a prospective study]. Seishin Shinkeigaku Zasshi 1997; 99:101-27. [PMID: 9136611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The number of patients treated with interferon (IFN) has increased markedly in Japan since 1992, when the Health and Welfare Ministry approved the use of IFN for treating chronic active hepatitis C. It is important to identify and treat depression, which is one of the psychiatric complications of IFN therapy and often leads to discontinuation of the therapy, in patients with chronic hepatitis C. In this study we prospectively investigated the incidence of depression during IFN therapy in patients with chronic active hepatitis C. The psychiatric status of 85 patients (53 men, 32 women; mean age 49.1 years) with chronic active hepatitis C who began receiving IFN at Showa University Hospital was assessed before and 2, 4, 12 and 24 weeks after the start of IFN therapy, using the major depressive episode diagnostic criteria listed in the DSM-III-R and the Hamilton Depression Scale HDS). All of the patients provided informed consent prior to participation in this study. IFN therapy was discontinued in 5 cases (5.9%) because of physical side effects and in 4 cases (4.7%) because of depression. Two, 11, 14, 25 and 16 patients were diagnosed as having major depressive episodes before and 2, 4, 12 and 24 weeks after the start of IFN therapy, respectively. The number of patients who were asymptomatic before the start of IFN therapy but were diagnosed as having a major depressive episode at least once during IFN therapy was 31 (31/83 = 37.3%). The mean HDS scores at 2, 4, 12 and 24 weeks (5.4, 6.0, 8.8 and 6.6) were significantly higher than that before the start of IFN therapy (3.0). The patients whose first diagnosed major depressive episodes occurred more than 4 weeks after the start of IFN therapy tended to be more severely depressed than those in whom it occurred less than 4 weeks after the start of IFN therapy. Compared to the 47 patients who completed 24 weeks of IFN therapy without experiencing depression, the 31 patients who were diagnosed as experiencing major depressive episodes during IFN therapy had significantly higher neuroticism scores determined using the Eysenck Personality Questionnaire, showed a more severely depressed mood and experienced more severe sleep disturbances before the start of IFN therapy. The latter group of patients also tended to have comorbid chronic physical disorders such as hypertension or diabetes mellitus and the histories of mental disorders before the IFN therapy; however these differences were not statistically significant. There were no differences between the two groups in patient age or sex, the severity of hepatitis before the IFN therapy, the type of IFN used in the therapy or the efficacy of IFN in the treatment of the hepatitis C. Our results indicate that the decision as to whether to treat chronic active hepatitis C with IFN should be made carefully and that early intervention and careful monitoring of depression are required during IFN therapy in the treatment of chronic active hepatitis C.
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Affiliation(s)
- T Otsubo
- Department of Psychiatry, Showa University School of Medicine
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40
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Mitsutake K, Miyazaki T, Tashiro T, Yamamoto Y, Kakeya H, Otsubo T, Kawamura S, Hossain MA, Noda T, Hirakata Y, Kohno S. Enolase antigen, mannan antigen, Cand-Tec antigen, and beta-glucan in patients with candidemia. J Clin Microbiol 1996; 34:1918-21. [PMID: 8818881 PMCID: PMC229153 DOI: 10.1128/jcm.34.8.1918-1921.1996] [Citation(s) in RCA: 92] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
We compared the specificities and sensitivities of four tests used for the serodiagnosis of candidemia in 39 patients with candidemia, including 10 patients with superficial Candida colonization, 10 patients with deep mycosis, and 20 healthy subjects. The results obtained by the dot immunoblotting assay for detecting the enolase antigen (48 kDa) were compared with those of assays for detecting mannan antigen, heat-labile antigen (a threshold titer of four times), and beta-glucan (> or = 60 pg/ml). Enolase antigen was detected in 28 (71.8%) patients with candidemia, while 30 (76.9%), 10 (25.6%), and 27 (84.4%) patients were positive for the heat-labile antigen by the Cand-Tec assay, the mannan antigen by the Pastorex Candida assay, and beta-glucan by the limulus test, respectively. Ten patients with superficial Candida colonization, 5 patients with invasive pulmonary aspergillosis, 5 patients with cryptococcosis, and 20 healthy subjects were negative for both enolase antigen and mannan antigen. Two patients with superficial Candida colonization, one patient with invasive pulmonary aspergillosis, and two patients with cryptococcosis were positive by the Cand-Tec assay. The beta-glucan concentration was more than 60 pg/ml in all patients with invasive pulmonary aspergillosis; however, it was less than 10 pg/ml in all patients with cryptococcosis. The specificity of enolase antigen in the serodiagnosis of candidemia was 100%, but the sensitivity was 71.8%. The specificity and sensitivity of Cand-Tec, the assay for mannan antigen, and the assay for beta-glucan were 76.9 and 87.5%, 25.6 and 100%, and 84.4 and 87.5%, respectively. Our results demonstrated that antigen detection tests are useful for the diagnosis of candidemia; however, none is satisfactory for the serodiagnosis of candidemia. We suggest that a combination of two assays may increase the accuracy of diagnosis of candidiasis.
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Affiliation(s)
- K Mitsutake
- Second Department of Internal Medicine, Nagasaki University School of Medicine, Japan
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Mihara T, Inoue Y, Matsuda K, Tottori T, Otsubo T, Watanabe Y, Hiyoshi T, Kubota Y, Yagi K, Seino M. Recommendation of early surgery from the viewpoint of daily quality of life. Epilepsia 1996; 37 Suppl 3:33-6. [PMID: 8681909 DOI: 10.1111/j.1528-1157.1996.tb01817.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
We surveyed pre- and postoperative levels of satisfaction with a range of the daily quality-of-life (QOL) domains in 132 sets of epilepsy surgery patients and their families. All patients underwent resective surgery for temporal lobe epilepsy and were monitored for > 2 years. Patient and family assessments showed patients' overall QOL markedly improves after surgery, depending on freedom from seizures. However, factors such as social contacts, family relations, or financial status improved little. Some families and patients were not satisfied with the postsurgical status, despite freedom from seizures. Patients who had surgery at a later age were not so satisfied with their postsurgical status as were patients who had surgery at a younger age, particularly on the QOL domains of role activities, memory function, leisure activities, or emotional well-being. This lower satisfaction level in older patients likely results from a variety of problems affecting patients during the long-lasting epileptic process; social handicaps, psychologic conflicts, and deterioration of cognitive/behavioral functions. Based on each case, we recommend that investigations start at an early stage of the illness, so that surgical intervention may be considered as early as possible.
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Affiliation(s)
- T Mihara
- National Epilepsy Center, Shizuoka Higashi Hospital, Japan
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Abstract
Forty-four patients with catheter-related infection admitted to Hokusho Central Hospital between 1985 and 1991 were studied retrospectively. The rate of catheter-related fungemia or bacteremia to all corresponding cases of fungemia and bacteremia increased from 7.7% in 1985 to 28.8% in 1991. The isolated pathogens were Candida parapsilosis (8 strains), Candida tropicalis (6 strains), methicillin-resistant Staphylococcus aureus (MRSA) (6 strains), methicillin-sensitive S. aureus (MSSA) (5 strains) and Streptococcus epidermidis (3 strains). Bacteremia occurred after catheterization of the femoral vein for a mean duration of 37 days. The period was significantly shorter than that after catheterization of the subclavian vein (56 days). The major isolates from the subclavian vein were Candida spp. (14/17, 82.4%), followed by MRSA (1/17, 5.9%) and MSSA (1/17, 5.9%), while isolates from the femoral vein were Candida spp. (6/16, 37.5%), MRSA (5/16, 31.3%) and MSSA (3/16, 20.8%). Catheter removal alone did not improve the clinical condition, particularly in MRSA bacteremia; the combination of antimicrobial therapy and removal of the catheter was necessary for a better prognosis.
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Affiliation(s)
- Y Inoue
- Department of Internal Medicine, Hokusho Central Hospital, Emukae
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Nasu M, Goto Y, Yamasaki T, Hara K, Kohno S, Koga H, Kaku M, Tomono K, Otsubo T, Maesaki S. [Clinical studies on the time-difference combination therapy with netilmicin and minocycline in methicillin-resistant Staphylococcus aureus infections]. Jpn J Antibiot 1994; 47:1305-17. [PMID: 7807692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Twenty-eight patients with methicillin-resistant Staphylococcus aureus (MRSA) infections were clinically studied for the effectiveness of the time-difference combination use of netilmicin (NTL) and minocycline (MINO). The patients were treated with NTL 100 mg and two hours later, with MINO 100 mg intravenously, twice daily, in the morning and evening for 14 days. Of 26 patients, MRSA was eradicated in 16 (61.5%), decreased in one, and unchanged in nine. Superinfections occurred with Serratia marcescens and Pseudomonas aeruginosa in two patients. The clinical efficacies were assessed in two patients with septicemia, 16 with pneumonia, and eight with chronic bronchitis. The obtained results were excellent in four patients, good in 15, fair in six, and poor in one patient. The rate of effectiveness was 73.1% (19/26). The overall clinical effectiveness judged by the committee was good in 19, fair in five, and poor in two patients. The efficacy rate was also 73.1% (19/26). Coagulase type II of MRSA was found in 23 patients, and coagulase type III in three patients, with overall clinical efficacy rates of 73.9% (17/23) and 66.7% (2/3), respectively. A side effect of eruption was observed in one patient, and its incidence was 3.6% (1/28). Abnormal laboratory test results were observed in 16 patients (57.1%), including abnormal liver function in 14 patients, abnormal kidney function in three, and increased eosinophils in three. Laboratory abnormalities occurred twelve of 16 bedridden patients, and this rate was higher than that in non bedridden patients. However, these abnormalities were all mild, transient, and immediately recovered after the treatment. In conclusion, the time-difference combination therapy using NTL and MINO was effective in the treatment of MRSA infections.
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Affiliation(s)
- M Nasu
- Second Department of Internal Medicine, Oita Medical University
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Kawakami A, Eguchi K, Matsunaga M, Tezuka H, Ueki Y, Shimomura C, Otsubo T, Nakao H, Migita K, Ishikawa N. CD4+CD45RA+ cells (suppressor-inducer T cells) in thyroid tissue from patients with Graves' disease. Acta Endocrinol (Copenh) 1991; 125:687-93. [PMID: 1838659 DOI: 10.1530/acta.0.1250687] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Previously, we used dual immunofluorescent analysis and showed that the thyroid gland from patients with Graves' disease had a reduced number of CD4+CD45RA+ cells, but an increased number of complementary CD4+CDw29+ cells. An immunohistochemical study, however, produced opposite results; interstitial lymphocytes predominantly expressed the CD45RA+ rather than the CDw29+ phenotype. Because the difference in findings may be due to differences in the techniques used, we did the following experiments: Mononuclear cells were treated with various amounts of collagenase (50-1000 mg/l) which had no effect on the cell surface antigens CD3, CD4 and CD45RA. A dual immunofluorescent study showed that the numbers of CD4+CD45RA+ and CD8+CD45RA+ cell population among CD45RA+ cell population were markedly decreased in the thyroid tissue, and that the CD45RA antigen on the intrathyroidal mononuclear cells was mainly expressed on the CD20+ cells. As the thyroid section had been fixed with acetone before immunohistochemical staining, CD45RA- cells were treated with acetone and stained with anti-CD45RA monoclonal antibody using an avidin-biotin peroxidase complex method. The results of this experiment suggest that there are cell surface molecules which react with anti-CD45RA monoclonal antibody after treatment with acetone in CD45RA- cells. The above findings confirm our previous results which showed that the thyroid glands of patients with Graves' disease have decreased numbers of suppressor-inducer T cells. Also, several problems exist in the detection of CD45RA+ cells when using an immunohistochemical method.
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Affiliation(s)
- A Kawakami
- First Department of Internal Medicine, Nagasaki University School of Medicine, Japan
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Noda I, Saito H, Fujieda S, Tsuda G, Honda N, Manabe Y, Otsubo T, Mori S, Ikeda T. [Reconstruction with peroneal free flap after ablation of head and neck cancer]. Nihon Jibiinkoka Gakkai Kaiho 1991; 94:1865-71. [PMID: 1779271 DOI: 10.3950/jibiinkoka.94.12_1865] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
One-stage reconstruction of head and neck defects following radical surgery was performed for two patients with the peroneal flaps which had the peroneal artery, vein and their branches as a pedicle. These flaps were viable without any post-operative complications. The advantages of these flaps are described as follows. (1) The subcutaneous fat is thin, and thus the flap is flexible and not bulky. (2) The diameters of the peroneal artery and vein are relatively large and the pedicle is long. (3) A pretty large size of the flap can be utilized. (4) A relatively long bone can be obtained together with skin at the same time, and the angle of the fibula can be easily changed. (5) Bleeding is little when the flap is taken out. (6) The resection of the tumor and the harvest of the flap can be done at the same time, due to different surgical areas. (7) The skin graft to the donor defect is not necessary, and the defect can be closed at one-stage. (8) The donor site does not stand out. Thus, this method is cosmetically excellent. This procedure has many advantages. Reconstruction with the peroneal flap offers a safe, reliable, and versatile method.
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Affiliation(s)
- I Noda
- Department of Otorhinolaryngology, Fukui Medical School
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Migita K, Eguchi K, Otsubo T, Kawakami A, Nakao H, Ueki Y, Shimomura C, Kurata A, Fukuda T, Matsunaga M. Cytokine regulation of HLA on thyroid epithelial cells. Clin Exp Immunol 1990; 82:548-52. [PMID: 2124959 PMCID: PMC1535486 DOI: 10.1111/j.1365-2249.1990.tb05488.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
The regulation of class I and class II HLA expression in human thyroid follicular cells was studied in vitro. Tumour necrosis factor-alpha (TNF-alpha) enhanced the expression of class I antigen on thyrocytes, but these cytokines had little effect on the expression of class II antigen. Interleukin-1 beta (IL-1 beta) and interleukin-6 (IL-6) did not affect class I and class II antigen expression. The combination of interferon-gamma (IFN-gamma) with TNF-alpha or IL-1 beta enhanced the induction of class I and class II antigens, compared with the effect of IFN-gamma alone. Neither class I nor class II expression was induced by IL-6 alone or in combination with IFN-gamma. These findings suggest that TNF-alpha and IL-1 beta may have an important role in inappropriate expression of HLA antigens on thyrocytes in thyroid gland.
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Affiliation(s)
- K Migita
- First Department of Internal Medicine, Nagasaki University School of Medicine, Japan
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Kawakami A, Eguchi K, Migita K, Nakao H, Otsubo T, Ueki Y, Shimomura C, Tezuka H, Matsunaga M, Ishimaru T. Inhibitory effects of gold sodium thiomalate on the proliferation and interferon-gamma induced HLA-DR expression in human endothelial cells. J Rheumatol 1990; 17:430-5. [PMID: 2112196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Our study was undertaken to investigate the effects of gold sodium thiomalate (GSTM) on the proliferation and HLA-DR antigen expression of human umbilical vein endothelial cells (EC). The proliferation of the EC was determined by 3H-thymidine incorporation into the EC. The expression of HLA-DR antigen on the surface of the EC was detected by an indirect immunofluorescent method using a fluorescent flow cytometer. When GSTM was added at the start of the EC culture, GSTM at a low concentration could inhibit the proliferative response of the EC to endothelial cell growth supplement. Furthermore, when the EC were cultured with recombinant interferon-gamma (rIFN-gamma) and GSTM, GSTM was also able to suppress the HLA-DR antigen expression on the surface of EC induced by rIFN-gamma. On the time-kinetic study of the effects of GSTM on the HLA-DR antigen expression induced by rIFN-gamma, the pretreatment of GSTM was able to suppress the HLA-DR antigen expression, whereas GSTM did not affect the HLA-DR antigen expression already induced by rIFN-gamma. Our findings suggest that the therapeutic effects of gold compounds in patients with rheumatoid arthritis may be attributed to the interference of the proliferation and HLA-DR antigen expression of the EC.
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Affiliation(s)
- A Kawakami
- First Department of Internal Medicine, Nagasaki University School of Medicine, Japan
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Nakao H, Eguchi K, Kawakami A, Migita K, Otsubo T, Ueki Y, Shimomura C, Tezuka H, Matsunaga M, Maeda K. Phenotypic characterization of lymphocytes infiltrating synovial tissue from patients with rheumatoid arthritis: analysis of lymphocytes isolated from minced synovial tissue by dual immunofluorescent staining. J Rheumatol 1990; 17:142-8. [PMID: 1690803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The phenotypic markers of mononuclear cells in synovial tissue from 19 patients with active rheumatoid arthritis (RA) were identified by a dual immunofluorescent method. The mononuclear cells were isolated from synovial tissue by mechanical disaggregation and an enzymatic digestion technique. The results revealed a marked reduction in CD4+2H4+ cells (suppressor inducer T cells) and an increment in CD4+4B4+ cells (helper T cells) among CD4+ cells in synovial tissue. The percentage of CD8+CD11b+ cells (suppressor effector T cells) was significantly lower in synovial tissue than in peripheral blood from patients with RA, resulting in an increased percentage of CD8+CD11b-- cells (cytotoxic T cells). The synovial tissue had higher percentages of pan B cells (B1+ cells), differentiated B cells (B1+B2-- cells) and plasma cells (PCA-1+ cells). These findings suggest that a combination of the increment in helper T cells, the reduction in suppressor T cells, and the increment in differentiated B cells may lead to excessive production of autoantibodies.
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Affiliation(s)
- H Nakao
- First Department of Internal Medicine, Nagasaki University School of Medicine, Japan
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Ueki Y, Eguchi K, Otsubo T, Kawabe Y, Shimomura C, Tezuka H, Nakao H, Kawakami A, Migita K, Ishikawa. Abnormal B lymphocyte function in thyroid glands from patients with Graves' disease. J Clin Endocrinol Metab 1989; 69:939-45. [PMID: 2793996 DOI: 10.1210/jcem-69-5-939] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Thyroid-infiltrating B lymphocytes from patients with Graves' disease were investigated in regard to their phenotypic profiles, cell size, cell cycle status, proliferative response to Staphylococcus aureus Cowan 1 (SAC), and spontaneous production of immunoglobulin G (IgG) and antithyroidal autoantibodies. Thyroid tissues and peripheral blood were obtained at the time of subtotal thyroidectomy of 27 Graves' patients who had been treated with thionamide drugs and iodide before operation. Two intrathyroidal mononuclear cell populations were obtained from these thyroid tissues. One cell population was isolated from the supernatants after mechanical disaggregation of the tissues and was defined as TG-1 cells. Another cell population, defined as TG-2 cells, was isolated from the supernatants of overnight cultures of the thyroid debris after enzymatic digestion. The percentages of B lymphocytes bearing activated markers and plasma cells (CD20+CD21-, IgM+IgD-, CD20+ transferrin receptor+, PCA-1+) were significantly higher in the TG-1 and TG-2 cell populations than in peripheral blood from Graves' disease patients and normal subjects. These phenotypic changes were accompanied by increased thyroid gland B lymphocyte cell size from patients with Graves' disease. The proliferative response of B lymphocytes to SAC was markedly lower in TG-1 and TG-2 cell populations than in peripheral blood cells from Graves' disease patients and normal subjects. B lymphocytes isolated from thyroid glands secreted significantly more IgG and antithyroidal autoantibodies than those from peripheral blood. Based on the findings of abnormalities in thyroid-infiltrating B lymphocytes, we suggest that activated B lymphocytes may induce the excessive production of antithyroidal autoantibodies in thyroid glands from patients with Graves' disease.
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Affiliation(s)
- Y Ueki
- First Department of Internal Medicine, Nagasaki University School of Medicine, Japan
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Migita K, Eguchi K, Tezuka H, Otsubo T, Kawakami A, Nakao H, Ueki Y, Shimomura C, Matsunaga M, Ishikawa N. Cytotoxic activity of interleukin-2 (IL-2) activated killer cells toward thyroid epithelial cells. Clin Exp Immunol 1989; 77:196-201. [PMID: 2505957 PMCID: PMC1541976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
We investigated the sensitivity of thyroid epithelial cells (thyrocytes) to IL-2 activated killer cells. The thyrocytes were lysed by autologous and allogeneic IL-2-activated killer cells; there were no differences in sensitivity to the killer cells between normal thyrocytes and thyrocytes from patients with Graves' disease. When thyrocytes were pretreated with recombinant interferon (rIFN) gamma or alpha, the IL-2-activated killer cell-mediated cytotoxicity was depressed and varied inversely with the cell surface expression of class I HLA gene products. The rIFN-gamma pretreatment did not alter the kinetics of thyrocytes lysis by IL-2-activated killer cells. Using cold target competition analysis, rIFN-gamma-pretreated thyrocytes clearly competed less effectively than did untreated cells for lysis of untreated target cells. These results suggest that rIFN-gamma or IFN-alpha pretreatment of thyrocytes may reduce their ability to be recognized by effector cells. These findings suggest that destruction of thyrocytes in autoimmune thyroiditis may be, in part, due to IL-2-activated killer cells and may be regulated by IFN.
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Affiliation(s)
- K Migita
- First Department of Internal Medicine, Nagasaki University School of Medicine, Japan
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