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Ishiyama N, Sueyoshi M, Molinos JG, Iwasaki K, Negishi JN, Koizumi I, Nagayama S, Nagasaka A, Nagasaka Y, Nakamura F. Underlying geology and climate interactively shape climate change refugia in mountain streams. ECOL MONOGR 2023. [DOI: 10.1002/ecm.1566] [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: 02/18/2023]
Affiliation(s)
- Nobuo Ishiyama
- Forest Research Institute, Hokkaido Research Organization Bibai Hokkaido Japan
| | - Masanao Sueyoshi
- Aqua Restoration Research Center Public Works Research Institute, Kakamigahara Gifu Japan
| | | | - Kenta Iwasaki
- Doto Station Forestry Research Institute, Hokkaido Research Organization Shintoku Hokkaido Japan
| | - Junjiro N. Negishi
- Faculty of Environmental Earth Science Hokkaido University Sapporo Hokkaido Japan
| | - Itsuro Koizumi
- Faculty of Environmental Earth Science Hokkaido University Sapporo Hokkaido Japan
| | - Shigeya Nagayama
- Aqua Restoration Research Center Public Works Research Institute, Kakamigahara Gifu Japan
| | - Akiko Nagasaka
- Forest Research Institute, Hokkaido Research Organization Bibai Hokkaido Japan
| | - Yu Nagasaka
- Forest Research Institute, Hokkaido Research Organization Bibai Hokkaido Japan
| | - Futoshi Nakamura
- Department of Forest Science Graduate School of Agriculture, Hokkaido University, N9 W9 Sapporo Hokkaido Japan
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Yamaguchi T, Akiyoshi T, Fukunaga Y, Nagayama S, Nagasaki T, Mukai T, Nakanishi R, Konishi T. Robotic extralevator abdominoperineal resection with en bloc multivisceral resection and lateral lymph node dissection for rectal cancer. Tech Coloproctol 2020; 24:1093-1094. [PMID: 32472358 DOI: 10.1007/s10151-020-02256-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Accepted: 05/25/2020] [Indexed: 01/31/2023]
Affiliation(s)
- T Yamaguchi
- Department of Gastroenterological Surgery, Cancer Institute Hospital of the Japanese Foundation for Cancer Research, 3-8-31, Ariake, Koto-ku, Tokyo, 135-8550, Japan.
| | - T Akiyoshi
- Department of Gastroenterological Surgery, Cancer Institute Hospital of the Japanese Foundation for Cancer Research, 3-8-31, Ariake, Koto-ku, Tokyo, 135-8550, Japan
| | - Y Fukunaga
- Department of Gastroenterological Surgery, Cancer Institute Hospital of the Japanese Foundation for Cancer Research, 3-8-31, Ariake, Koto-ku, Tokyo, 135-8550, Japan
| | - S Nagayama
- Department of Gastroenterological Surgery, Cancer Institute Hospital of the Japanese Foundation for Cancer Research, 3-8-31, Ariake, Koto-ku, Tokyo, 135-8550, Japan
| | - T Nagasaki
- Department of Gastroenterological Surgery, Cancer Institute Hospital of the Japanese Foundation for Cancer Research, 3-8-31, Ariake, Koto-ku, Tokyo, 135-8550, Japan
| | - T Mukai
- Department of Gastroenterological Surgery, Cancer Institute Hospital of the Japanese Foundation for Cancer Research, 3-8-31, Ariake, Koto-ku, Tokyo, 135-8550, Japan
| | - R Nakanishi
- Department of Gastroenterological Surgery, Cancer Institute Hospital of the Japanese Foundation for Cancer Research, 3-8-31, Ariake, Koto-ku, Tokyo, 135-8550, Japan
| | - T Konishi
- Department of Gastroenterological Surgery, Cancer Institute Hospital of the Japanese Foundation for Cancer Research, 3-8-31, Ariake, Koto-ku, Tokyo, 135-8550, Japan.
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Ishiyama N, Ryo M, Kataoka T, Nagayama S, Sueyoshi M, Terui A, Mori T, Akasaka T, Nakamura F. Predicting the ecological impacts of large-dam removals on a river network based on habitat-network structure and flow regimes. Conserv Biol 2018; 32:1403-1413. [PMID: 29785835 DOI: 10.1111/cobi.13137] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 05/11/2018] [Accepted: 05/16/2018] [Indexed: 06/08/2023]
Abstract
Large dams provide vital protection and services to humans. However, an increasing number of large dams worldwide are old and not operating properly. The removal of large dams has excellent potential to restore habitat connectivity and flow regimes; therefore, projecting the related ecological consequences is an emerging need for water resource and ecosystem management. However, no modeling methods are currently available for such projections at the basin scale. We devised a scheme that integrates changes in flow regimes and habitat network structure into a basin-scale impact assessment of removal of large dams and applied it to the Nagara-Ibi Basin, Japan. We used a graph-theoretical approach and a hydrological model, to quantify changes in habitat availability for 11 freshwater fishes at the basin scale under multiple removal scenarios. We compared these results with the change predicted using a conventional scheme that considered only changes to the habitat network due to dam removal. Our proposed scheme revealed that an increase in flow variability associated with dam removal projected both positive and negative effects on basin-scale habitat availability, depending on the focal species, endangered species had a negative response to dam removal. In contrast, the conventional approach projected only positive effects for all species. This difference in the outcomes indicates that large-dam removal can have negative and positive effects on watershed restoration due to changes in flow regimes. Our results also suggest the effect of removal of large dams may depend on the dams and their locations. Our study is the first step in projecting ecological trade-offs associated with the removal of large dams on riverscapes at the basin scale and provides a foundation for future process-based watershed restoration.
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Affiliation(s)
- Nobuo Ishiyama
- Department of Forest Science, Graduate School of Agriculture, Hokkaido University, N9 W9 Sapporo, Hokkaido, 060-8589, Japan
| | - Masahiro Ryo
- Institute of Biology, Freie Universität Berlin, Altensteinstrasse 6, Berlin, D-14195, Germany
- Department of Civil and Environmental Engineering, Tokyo Institute of Technology, 2-12-1-M1-4 Ookayama, Meguro-ku, Tokyo, 152-0033, Japan
| | - Taiga Kataoka
- Department of Civil and Environmental Engineering, Tokyo Institute of Technology, 2-12-1-M1-4 Ookayama, Meguro-ku, Tokyo, 152-0033, Japan
| | - Shigeya Nagayama
- River Basin Research Center, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - Masanao Sueyoshi
- Department of Forest Science, Graduate School of Agriculture, Hokkaido University, N9 W9 Sapporo, Hokkaido, 060-8589, Japan
| | - Akira Terui
- Department of Forest Science, Graduate School of Agriculture, Hokkaido University, N9 W9 Sapporo, Hokkaido, 060-8589, Japan
- Department of Ecology, Evolution and Behavior, University of Minnesota, 140 Gortner Laboratory, 1479 Gortner Avenue, St. Paul, MN, 55108, U.S.A
| | - Terutaka Mori
- Department of General Systems Studies, The University of Tokyo, Meguro, Tokyo, 153-8902, Japan
| | - Takumi Akasaka
- Laboratory of Conservation Ecology, Obihiro University of Agriculture and Veterinary Medicine, Nishi 2-sen 11, Inadacho, Obihiro, 080-8555, Japan
| | - Futoshi Nakamura
- Department of Forest Science, Graduate School of Agriculture, Hokkaido University, N9 W9 Sapporo, Hokkaido, 060-8589, Japan
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Kozuki R, Shinozaki E, Osumi H, Wakatsuki T, Suenaga M, Ichimura T, Ogura M, Suzuki T, Ota Y, Nakayama I, Takahari D, Chin K, Nagasaki T, Akiyoshi T, Konishi T, Fujimoto Y, Nagayama S, Fukunaga Y, Ueno M, Yamaguchi K. A retrospective analysis of the association between perioperative carcinoembryonic antigen level and prognosis in stage III colorectal cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy431.046] [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: 11/14/2022] Open
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5
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Yamamoto W, Fujii K, Otsuji S, Takiuchi S, Kakishita M, Ibuki M, Hasegawa K, Nagayama S, Ishibuchi K, Tamaru H, Ishii R, Nakabayashi S, Higashino Y. P2766Qualitative and quantitative assessment of in-stent restenosis lesions after balloon dilation by optical coherence tomography. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2766] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- W Yamamoto
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| | - K Fujii
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| | - S Otsuji
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| | - S Takiuchi
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| | - M Kakishita
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| | - M Ibuki
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| | - K Hasegawa
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| | - S Nagayama
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| | - K Ishibuchi
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| | - H Tamaru
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| | - R Ishii
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| | - S Nakabayashi
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| | - Y Higashino
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
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Ishibuchi K, Fujii K, Otsuji S, Takiuchi S, Ibuki M, Kakishita M, Hasegawa K, Nagayama S, Tamaru H, Ishii R, Nakabayashi S, Yamamoto W, Higashino Y. P5590The incidence and clinical impact of peri-stent contrast staining after first, second, and third-generation drug-eluding stent implantation. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p5590] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- K Ishibuchi
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - K Fujii
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - S Otsuji
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - S Takiuchi
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - M Ibuki
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - M Kakishita
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - K Hasegawa
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - S Nagayama
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - H Tamaru
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - R Ishii
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - S Nakabayashi
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - W Yamamoto
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - Y Higashino
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
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7
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Fujii K, Otsuji S, Yamamoto W, Takiuchi S, Hasegawa K, Ishibuchi K, Tamaru H, Ishii R, Yabuki M, Ibuki M, Nagayama S, Higashino Y. 109Influence of optical coherence tomography derived neointimal tissue morphology on development process of very late in-stent restenosis after drug-eluting stent: four serial coronary arteriograms study. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx501.109] [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: 11/13/2022] Open
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8
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Yamamoto W, Fujii K, Otsuji S, Takiuchi S, Hasegawa K, Ishibuchi K, Tamaru H, Ishii R, Yabuki M, Ibuki M, Nagayama S, Higashino Y. P528Optical coherence tomography patterns of in-stent restenosis after drug-eluting stent implantation: a novel classification and its clinical significance. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx501.p528] [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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9
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Yamamoto W, Fujii K, Otsuji S, Takiuchi S, Hasegawa K, Ishibuchi K, Tamaru H, Ishii R, Yabuki M, Ibuki M, Nagayama S, Higashino N. P6105Potential contribution of organized thrombus to the development of neoatherosclerotic neointima after drug-eluting stent implantation. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p6105] [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: 11/13/2022] Open
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10
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Ishibuchi K, Fujii K, Otsuji S, Takiuchi S, Hasegawa K, Tamaru H, Ishii R, Yamamoto W, Yabuki M, Ibuki M, Nagayama S, Higashino Y. P490Clinical utility of noninvasive peri-stent contrast staining derived from coronary computed tomographic angiograms for lesions after coronary stent implantation. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx501.p490] [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: 11/13/2022] Open
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11
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Ueki K, Ohashi A, Nariyama N, Nagayama S, Fujita T, Hattori K, Anayama Y. Systematic Evaluation of Neutron Shielding Effects for Materials. NUCL SCI ENG 2017. [DOI: 10.13182/nse124-455] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- K. Ueki
- Ship Research Institute, 6-38-1 Shinkawa, Mitaka, Tokyo 181, Japan
| | - A. Ohashi
- Ship Research Institute, 6-38-1 Shinkawa, Mitaka, Tokyo 181, Japan
| | - N. Nariyama
- Ship Research Institute, 6-38-1 Shinkawa, Mitaka, Tokyo 181, Japan
| | - S. Nagayama
- Genden Engineering Services and Construction Company 1-6-1 Ohtemachi, Chiyoda-ku, Tokyo 100, Japan
| | - T. Fujita
- Genden Engineering Services and Construction Company 1-6-1 Ohtemachi, Chiyoda-ku, Tokyo 100, Japan
| | - K. Hattori
- Sanoya Industry Company, Ltd., 2626 Moro, Kanuma, Tochigi-Ken, 322, Japan
| | - Y. Anayama
- Sanoya Industry Company, Ltd., 2626 Moro, Kanuma, Tochigi-Ken, 322, Japan
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Ikeda A, Konishi T, Ueno M, Fukunaga Y, Nagayama S, Fujimoto Y, Akiyoshi T, Yamaguchi T. Randomized clinical trial of oral and intravenous versus intravenous antibiotic prophylaxis for laparoscopic colorectal resection. Br J Surg 2016; 103:1608-1615. [DOI: 10.1002/bjs.10281] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 06/24/2016] [Accepted: 06/27/2016] [Indexed: 12/13/2022]
Abstract
Abstract
Background
The use of oral prophylactic antibiotics for the prevention of surgical-site infection (SSI) in patients undergoing laparoscopic surgery for colorectal cancer is controversial. The aim of this RCT was to evaluate whether intravenous perioperative antibiotics are inferior to combined preoperative oral and perioperative intravenous antibiotics in this setting.
Methods
Patients undergoing elective laparoscopic colorectal resection in a single cancer centre were assigned randomly to combined preoperative oral antibiotics (metronidazole and kanamycin) and perioperative intravenous antibiotics (cefmetazole) (oral/IV group) or to perioperative intravenous antibiotics (cefmetazole) alone (IV-only group). Patients were stratified for the analyses based on type of operation (colonic surgery, anterior resection or abdominoperineal resection), preoperative use of mechanical bowel preparation, preoperative chemoradiotherapy and the presence of diabetes mellitus. The primary endpoint was the overall rate of SSI. Secondary endpoints were the rates of incisional site infection, organ/space infection, anastomotic leakage, intra-abdominal abscess, adverse events and postoperative complications.
Results
Of 540 patients offered participation in the trial in 2013–2014, 515 agreed to take part and were randomized. Some 256 patients in the IV-only group and 255 in the oral/IV group completed the treatment per protocol. The overall rate of SSI was 7·8 per cent (20 of 256) in the IV-only group and 7·8 per cent (20 of 255) in the oral/IV group, confirming that perioperative administration of intravenous antibiotics alone was not inferior to the combined regimen (P = 0·017). There were no differences in rates of incisional site infection (5·5 versus 5·9 per cent respectively), organ/space infection (2·3 versus 2·0 per cent) or other secondary endpoints between the two groups.
Conclusion
Intravenous perioperative antimicrobial prophylaxis alone is not inferior to combined preoperative oral and intravenous perioperative prophylaxis with regard to SSI in patients with colorectal cancer undergoing elective laparoscopic resection. Registration number: UMIN000019339 (http://www.umin.ac.jp/ctr/).
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Affiliation(s)
- A Ikeda
- Department of Gastroenterological Surgery, Cancer Institute Hospital of the Japanese Foundation for Cancer Research 3-8-31 Ariake, Koto-ku, Tokyo 135-8550, Japan
| | - T Konishi
- Department of Gastroenterological Surgery, Cancer Institute Hospital of the Japanese Foundation for Cancer Research 3-8-31 Ariake, Koto-ku, Tokyo 135-8550, Japan
| | - M Ueno
- Department of Gastroenterological Surgery, Cancer Institute Hospital of the Japanese Foundation for Cancer Research 3-8-31 Ariake, Koto-ku, Tokyo 135-8550, Japan
| | - Y Fukunaga
- Department of Gastroenterological Surgery, Cancer Institute Hospital of the Japanese Foundation for Cancer Research 3-8-31 Ariake, Koto-ku, Tokyo 135-8550, Japan
| | - S Nagayama
- Department of Gastroenterological Surgery, Cancer Institute Hospital of the Japanese Foundation for Cancer Research 3-8-31 Ariake, Koto-ku, Tokyo 135-8550, Japan
| | - Y Fujimoto
- Department of Gastroenterological Surgery, Cancer Institute Hospital of the Japanese Foundation for Cancer Research 3-8-31 Ariake, Koto-ku, Tokyo 135-8550, Japan
| | - T Akiyoshi
- Department of Gastroenterological Surgery, Cancer Institute Hospital of the Japanese Foundation for Cancer Research 3-8-31 Ariake, Koto-ku, Tokyo 135-8550, Japan
| | - T Yamaguchi
- Department of Gastroenterological Surgery, Cancer Institute Hospital of the Japanese Foundation for Cancer Research 3-8-31 Ariake, Koto-ku, Tokyo 135-8550, Japan
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Hasegawa K, Shishikura D, Ishibuchi K, Otsuji S, Takiuchi S, Yabuki M, Asano K, Ibuki M, Nagayama S, Kashiyama T, Fujino A, Ishii R, Higashino Y. A New Method for Treating Acute Coronary Syndrome: The Combination of Excimer Laser Coronary Atherectomy and Filter Devices. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.061] [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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Chino A, Nagayama S, Ishikawa H, Morishige K, Kishihara T, Arai M, Sugiura Y, Motoi N, Yamamoto N, Tamegai Y, Igarashi M. Cancer emerging from the recurrence of sessile serrated adenoma/polyp resected endoscopically 5 years ago. Jpn J Clin Oncol 2015; 46:89-95. [PMID: 26538462 DOI: 10.1093/jjco/hyv154] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Accepted: 09/17/2015] [Indexed: 01/27/2023] Open
Abstract
Since the serrated neoplastic pathway has been regarded as an important pathway of colorectal carcinogenesis, few reports have been published on clinical cases of cancer derived from sessile serrated adenoma/polyp, especially on recurrence after resected sessile serrated adenoma/polyp. An elderly woman underwent endoscopic mucosal resection of a flat elevated lesion, 30 mm in diameter, in the ascending colon; the histopathological diagnosis at that time was a hyperplastic polyp, now known as sessile serrated adenoma/polyp. Five years later, cancer due to the malignant transformation of the sessile serrated adenoma/polyp was detected at the same site. The endoscopic diagnosis was a deep invasive carcinoma with a remnant sessile serrated adenoma/polyp component. The carcinoma was surgically removed, and the pathological diagnosis was an adenocarcinoma with sessile serrated adenoma/polyp, which invaded the muscularis propria. The surgically removed lesion did not have a B-RAF mutation in either the sessile serrated adenoma/polyp or the carcinoma; moreover, the initial endoscopically resected lesion also did not have a B-RAF mutation. Immunohistochemistry confirmed negative MLH1 protein expression in only the cancer cells. Lynch syndrome was not detected on genomic examination. The lesion was considered to be a cancer derived from sessile serrated adenoma/polyp recurrence after endoscopic resection, because both the surgically and endoscopically resected lesions were detected at the same location and had similar pathological characteristics, with a serrated structure and low-grade atypia. Furthermore, both lesions had a rare diagnosis of a sessile serrated adenoma/polyp without B-RAF mutation. This report highlights the need for the follow-up colonoscopy after endoscopic resection and rethinking our resection procedures to improve treatment.
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Affiliation(s)
- A Chino
- Digestive of Gastroenterology Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo
| | - S Nagayama
- Digestive of Surgery Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo
| | - H Ishikawa
- Digestive of Gastroenterology Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo
| | - K Morishige
- Digestive of Gastroenterology Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo
| | - T Kishihara
- Digestive of Gastroenterology Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo
| | - M Arai
- Clinical Genetic Oncology Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo
| | - Y Sugiura
- Pathology Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - N Motoi
- Pathology Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - N Yamamoto
- Pathology Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Y Tamegai
- Digestive of Gastroenterology Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo
| | - M Igarashi
- Digestive of Gastroenterology Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo
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15
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Akiyoshi T, Nagata J, Nagasaki T, Konishi T, Fujimoto Y, Nagayama S, Fukunaga Y, Ueno M. Laparoscopic salvage lateral pelvic lymph node dissection for locally recurrent rectal cancer. Colorectal Dis 2015; 17:O213-6. [PMID: 26277783 DOI: 10.1111/codi.13088] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Accepted: 05/22/2015] [Indexed: 12/13/2022]
Abstract
AIM The lateral pelvic lymph nodes are one of the major sites and sources of local recurrence (LR) after surgery for rectal cancer. Salvage lateral pelvic lymph node dissection (LPLD) is potentially curative, but the value of laparoscopic surgery in such cases is unknown. Our aim was to report the technical details of laparoscopic salvage LPLD for LR at these nodes after rectal cancer surgery. METHOD The study was based on nine patients who underwent laparoscopic salvage LPLD for LR at the lateral pelvic lymph nodes after surgery for rectal cancer. The safety and feasibility of this procedure were determined. RESULTS The median operation time was 381 min and the median estimated blood loss was 130 ml. There were no conversions. Adjacent structures removed en bloc were the pelvic plexus in four patients, the internal iliac artery in seven patients and the seminal vesicle in one patient. The median number of metastatic lymph nodes was 1 (range 1-11). CONCLUSION Our novel technique of laparoscopic salvage LPLD for LR at the lateral pelvic lymph nodes is safe and feasible.
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Affiliation(s)
- T Akiyoshi
- Gastroenterological Center, Department of Gastroenterological Surgery, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - J Nagata
- Gastroenterological Center, Department of Gastroenterological Surgery, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - T Nagasaki
- Gastroenterological Center, Department of Gastroenterological Surgery, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - T Konishi
- Gastroenterological Center, Department of Gastroenterological Surgery, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Y Fujimoto
- Gastroenterological Center, Department of Gastroenterological Surgery, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - S Nagayama
- Gastroenterological Center, Department of Gastroenterological Surgery, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Y Fukunaga
- Gastroenterological Center, Department of Gastroenterological Surgery, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - M Ueno
- Gastroenterological Center, Department of Gastroenterological Surgery, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
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16
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Fujita-Nakata M, Tomioka R, Tanaka K, Nakanishi M, Nagayama S, Takahashi R, Machiya T, Hamada T, Matsui M. Intractable cough as characteristic symptom of neuromyelitis optica and neuromyelitis optica spectrum disorder. Mult Scler 2015. [PMID: 26199354 DOI: 10.1177/1352458515596602] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- M Fujita-Nakata
- Department of Neurology, Kanazawa Medical University, Ishikawa, Japan
| | - R Tomioka
- Department of Neurology, Kanazawa Medical University, Ishikawa, Japan
| | - K Tanaka
- Department of Neurology, Kanazawa Medical University, Ishikawa, Japan
| | - M Nakanishi
- Department of Neurology, Kanazawa Medical University, Ishikawa, Japan
| | - S Nagayama
- Department of Neurology, Kanazawa Medical University, Ishikawa, Japan
| | - R Takahashi
- Department of Neurology, Fukui Prefectural Hospital, Fukui, Japan
| | - T Machiya
- Department of Neurology, Fukui Prefectural Hospital, Fukui, Japan
| | - T Hamada
- Department of Neurology, Fukui Prefectural Hospital, Fukui, Japan
| | - M Matsui
- Department of Neurology, Kanazawa Medical University, Ishikawa, Japan
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Nagayama S, Matsubara S, Horie K, Kuwata T, Ohkuchi A, Usui R, Nakata M, Suzuki M. The ovarian artery: an unusual feeding artery of uterine artery pseudoaneurysm necessitating repetitive transarterial embolisation. J OBSTET GYNAECOL 2014; 35:656-7. [PMID: 25546526 DOI: 10.3109/01443615.2014.991295] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- S Nagayama
- a Department of Obstetrics and Gynecology , Jichi Medical University , Tochigi , Japan
| | - S Matsubara
- a Department of Obstetrics and Gynecology , Jichi Medical University , Tochigi , Japan
| | - K Horie
- a Department of Obstetrics and Gynecology , Jichi Medical University , Tochigi , Japan
| | - T Kuwata
- a Department of Obstetrics and Gynecology , Jichi Medical University , Tochigi , Japan
| | - A Ohkuchi
- a Department of Obstetrics and Gynecology , Jichi Medical University , Tochigi , Japan
| | - R Usui
- a Department of Obstetrics and Gynecology , Jichi Medical University , Tochigi , Japan
| | - M Nakata
- b Department of Radiology , Jichi Medical University , Tochigi , Japan
| | - M Suzuki
- a Department of Obstetrics and Gynecology , Jichi Medical University , Tochigi , Japan
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Onodera H, Nagayama S, Kohmoto I, Maetani S, Imamura M. Novel surgical repair with bilateral gluteus muscle patching for intractable rectovaginal fistula. Tech Coloproctol 2014; 7:198-202. [PMID: 14628166 DOI: 10.1007/s10151-003-0035-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [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] [Received: 07/10/2003] [Accepted: 07/28/2003] [Indexed: 10/26/2022]
Abstract
We created a novel surgical repair for intractable rectovaginal fistula and treated four patients who had previously undergone unsuccessful surgery. An X-shaped skin incision was made on the perineum, and then the rectum was carefully divided from the vagina. Defects of both the rectum and the vagina were closed with vertical mattress sutures. The external sphincter muscle also was approximated. The gluteus muscle was identified through another skin incision to the buttock, and cut at the attachment to the femur. Bilateral gluteus muscles were approximated at the midline of the perineum so that the vagina was sufficiently separated from the rectum. Established anorectal angle was 92.5 degrees (SD=6.4 degrees ). Mean resting pressure was 101.3 cm H2O (SD=13.1). All patients retained complete anal function without soiling. The unusual problem of erosion of the posterior vaginal wall with fistulation in a sexually active woman justifies greater efforts, and this surgical technique offers good prospects in this small group of patients.
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Affiliation(s)
- H Onodera
- Department of Surgery and Surgical Basic Science, Kyoto University, 54 Shogoin Kawara-cho, Sakyo-ku, Kyoto 606-8507, Japan.
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19
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Hida K, Hasegawa S, Kataoka Y, Nagayama S, Yoshimura K, Nomura A, Kawada K, Kawamura J, Kinjo Y, Sakai Y. Male sexual function after laparoscopic total mesorectal excision. Colorectal Dis 2013; 15:244-51. [PMID: 22776077 DOI: 10.1111/j.1463-1318.2012.03170.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
AIM The aim of this prospective study was to clarify the frequency of male sexual dysfunction after laparoscopic total mesorectal excision (LTME) and to examine the relationship between pelvic autonomic nerve (PAN) preservation status and functional outcomes. METHOD Candidates for LTME were included in this study. PAN preservation status after LTME was examined in detail by video review. Patients completed a functional questionnaire (the International Index of Erectile Function) before and 3, 6 and 12 months after the operation. RESULTS Twenty-six patients who underwent LTME were assessable. Detailed video reviews identified inadvertent PAN damage during surgery. PAN injury was observed in 11 cases (41%), including eight cases (32%) of inadvertent PAN damage (incomplete preservation group). There was a trend toward increasing inadvertent PAN injury rate in patients with high body mass index and large tumours. The results from all patients who underwent LTME showed no deterioration in total International Index of Erectile Function or its domain scores 12 months after surgery. In the incomplete preservation group, these scores temporarily decreased (3 and 6 months after surgery), but such deterioration was not observed in the complete preservation group. Most of the 12 patients with potentially active erectile function before the operation recovered this function, and only one patient (7%) with PAN injury was still judged as inactive 12 months after surgery. CONCLUSION The proportion of patients with sexual dysfunction after LTME is low. With the enhanced visibility of the laparoscope, inadvertent PAN injury was detected in a significant number of cases and associated with transient deterioration of sexual function.
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Affiliation(s)
- K Hida
- Department of Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
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20
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Konishi T, Ueno M, Fukunaga Y, Nagayama S, Fujimoto Y, Akiyoshi T, Oya M, Kuroyanagi H, Watanabe T, Yamaguchi T, Muto T. A comparison of preoperative chemoradiation versus extended surgery with lateral node dissection for lower rectal cancer: A report from a single referral center in Japan. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e14070] [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: 11/20/2022] Open
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21
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Yamazaki S, Abe M, Nagayama S, Shibata K, Susukida M, Fukada T, Kinka M, Kobayashi I, Inushima T, Suzuki K. Fabrication of the Large-Area Integrated a-Si Solar Cells. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-70-487] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
ABSTRACTPIN-structure small-area solar cells using a-Si have been frequently reported on, but only a few reports are available on the study of solar cells using a large-area (10-cm square) substrate, all with a resultant conversion efficiency of above 9.0 %[1,2]. Our study has been concentrated on solar cells using a batch of ten 10-cm square substrates with an average conversion efficiency of 9.5 % or more.As a result, without an anti-reflection coating on the surface of the glass substrate, the following values have been obtained: average conversion efficiency (EFF)=9.63 % (standard deviation of 0.195 %) -Open-circuit voltage (Voc)=12.668 V (standard deviation of 0.215 V) -Short-circuit current (Isc)=78.467 mA (standard deviation of 1.619 mA) -Fill factor (FF)=0.6672 (standard deviation of 0.009)The process, equipment and methods for measurements through which these results were obtained are described below.
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Kajita Y, Furu M, Nagayama S, Nishiyama H, Nakamura E, Ogawa O, Toguchida J. MP-15.09: Functional Analysis of a Novel Soft Tissue Sarcoma Metastasis-Associated Molecule in Prostate Cancer. Urology 2009. [DOI: 10.1016/j.urology.2009.07.843] [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: 10/20/2022]
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23
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Okoshi K, Nagayama S, Furu M, Mori Y, Yoshizawa A, Toguchida J, Sakai Y. A Case Report of Pathologically Complete Response of a Huge Rectal Cancer after Systemic Chemotherapy with mFOLFOX6. Jpn J Clin Oncol 2009; 39:528-33. [DOI: 10.1093/jjco/hyp045] [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] [Indexed: 11/14/2022] Open
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24
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Nagayama S, Kawaguchi Y, Nakano D, Nakamura F. Methods for and fish responses to channel remeandering and large wood structure placement in the Shibetsu River Restoration Project in northern Japan. Landscape Ecol Eng 2008. [DOI: 10.1007/s11355-008-0039-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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25
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Nakano D, Nagayama S, Kawaguchi Y, Nakamura F. River restoration for macroinvertebrate communities in lowland rivers: insights from restorations of the Shibetsu River, north Japan. Landscape Ecol Eng 2008. [DOI: 10.1007/s11355-008-0038-3] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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26
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Yamaya H, Yoshida K, Kuritani J, Yonezawa J, Yonezawa JI, Tsuda M, Shindo T, Nagayama S, Buzdar AU. Safety, tolerability, and pharmacokinetics of TAS-108 in normal healthy post-menopausal female subjects: a phase I study on single oral dose. J Clin Pharm Ther 2005; 30:459-70. [PMID: 16164493 DOI: 10.1111/j.1365-2710.2005.00673.x] [Citation(s) in RCA: 7] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVES The present study was conducted to evaluate the safety, tolerability, and pharmacokinetics of TAS-108 after ascending single oral doses and to analyse preliminarily the effect of food on the pharmacokinetics of TAS-108 in normal healthy post-menopausal female subjects. METHODS Twelve healthy subjects participated in an open-label, ascending single-dose, alternating group, safety, tolerance, and pharmacokinetic study of TAS-108 administered orally to two groups of the subjects, one given alternating doses of 10, 40, 120 mg (group A) and the other of 20, 80, 160 mg (group B), in the fasting state. In addition, six subjects (group A) were administered an additional dose at 120 mg TAS-108 after food consumption. Plasma and urine samples for measurement of TAS-108 were analysed by validated analytical procedures using a liquid chromatographic method with tandem mass spectrometric detection (LC/MS/MS). RESULTS There was no dose-dependent increase in any adverse events (AEs), and there were no serious AEs or deaths. TAS-108 was readily absorbed following oral administration of the 80-, 120- and 160-mg doses. Plasma TAS-108 levels steadily declined, generally in a mono-exponential manner, with overall mean t(1/2) values ranging from 3.04 to 4.43 h in the fasting groups. Administration of TAS-108 after a high-fat meal markedly increased the bioavailability of the drug. The mean C(max) and AUC(0--t) values increased after a high-fat breakfast by 182 and 191% compared with the fasting value respectively. CONCLUSIONS In this escalating dose study of TAS-108, the drug was well tolerated by the participants. The maximum and systemic exposure to TAS-108 tended to increase with increasing dose and its bioavailability markedly increased after high-fat food intake.
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Affiliation(s)
- H Yamaya
- Pharmacokinetics Research Laboratory, Taiho Pharmaceutical Co., Ltd, Tokushima, Japan.
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Yamada Y, Hamaguchi T, Goto M, Muro K, Matsumura Y, Shimada Y, Shirao K, Nagayama S. Plasma concentrations of 5-fluorouracil and F-beta-alanine following oral administration of S-1, a dihydropyrimidine dehydrogenase inhibitory fluoropyrimidine, as compared with protracted venous infusion of 5-fluorouracil. Br J Cancer 2003; 89:816-20. [PMID: 12942110 PMCID: PMC2394492 DOI: 10.1038/sj.bjc.6601224] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
The pharmacokinetics and pharmacodynamics of oral S-1, a dihydropyrimidine dehydrogenase (DPD) inhibitory fluoropyrimidine, were compared with those of protracted venous infusion (PVI) of 5-fluorouracil (5-FU). In all, 10 patients with gastric cancer received PVI of 5-FU at a dose of 250 mg m(-2) day(-1) for 5 days. After a washout period of 9 days, the patients received two divided doses daily for 28 days. S-1 was administered orally at about 0900 and 1900 hours. The daily dose of S-1 in terms of tegafur was 80 mg day(-1) in patients with a body surface area (BSA) of <1.25 m(2), 100 mg day(-1) in those with a BSA of >or=1.25 m(2) to <1.5 m(2), and 120 mg day(-1) in those with a BSA of >or=1.5 m(2). Plasma concentrations of 5-FU and F-beta-alanine (FBAL) were measured for pharmacokinetic analysis, and the plasma uracil concentration was monitored as a surrogate marker of DPD inhibition (pharmacodynamic analysis) in the same patients on days 1-5 of PVI of 5-FU and on days 1-5 of oral S-1. The area under the curve (AUC(0-10 h)) of 5-FU on day 5 was 728+/-113 ng h ml(-1) for PVI of 5-FU and 1364+/-374 ng h ml(-1) for S-1. The median 5-FU PVI : S-1 ratio of the AUC(0-10 h) of 5-FU was 1.9. The AUC(0-10 h) of FBAL on day 5 of PVI of 5-FU was 9465+/-3225 ng h ml(-1), AUC(0-10 h), as compared with 1725+/-605 ng h ml(-1) on day 5 of S-1 treatment. The AUC(0-10 h) of uracil on day 5 was 252+/-60 ng h ml(-1) with PVI of 5-FU and 12 582+/-3060 ng h ml(-1) with S-1. The AUC(0-10 h) of FBAL was markedly lower and plasma uracil concentrations were significantly higher for S-1 than for PVI of 5-FU, clearly demonstrating the effect of DPD inhibition.
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Affiliation(s)
- Y Yamada
- Medical Oncology Division, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan.
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Hashimoto S, Narita S, Kasahara H, Shirai K, Kobayashi T, Takanishi A, Sugano S, Yamaguchi J, Sawada H, Takanobu H, Shibuya K, Morita T, Kurata T, Onoe N, Ouchi K, Noguchi T, Niwa Y, Nagayama S, Tabayashi H, Matsui I, Obata M, Matsuzaki H, Murasugi A, Kobayashi T, Haruyama S, Okada T, Hidaki Y, Taguchi Y, Hoashi K, Morikawa E, Iwano Y, Araki D, Suzuki J, Yokoyama M, Dawa I, Nishino D, Inoue S, Hirano T, Soga E, Gen S, Yanada T, Kato K, Sakamoto S, Ishii Y, Matsuo S, Yamamoto Y, Sato K, Hagiwara T, Ueda T, Honda N, Hashimoto K, Hanamoto T, Kayaba S, Kojima T, Iwata H, Kubodera H, Matsuki R, Nakajima T, Nitto K, Yamamoto D, Kamizaki Y, Nagaike S, Kunitake Y, Morita S. Auton Robots 2002; 12:25-38. [DOI: 10.1023/a:1013202723953] [Citation(s) in RCA: 34] [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: 11/12/2022]
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Abstract
Heat shock protein 70 (Hsp70) is capable of protecting cells, tissues, organs, and animals from a subsequent, normally lethal heating, as well as from numerous disease states. Therefore, it would be of great therapeutic benefit to discover compounds that are clinically safe yet able to induce Hsp70 in patients. Carbenoxolone, an antiulcer drug, protects gastric mucosal cells against irritants in vivo and in vitro. We assessed here whether carbenoxolone induces Hsp70 expression in human cell lines. We found that carbenoxolone increased the expression of Hsp70 protein and mRNA, and Hsp70 promoter activity.
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Affiliation(s)
- S Nagayama
- Department of Pharmacological Sciences, Faculty of Pharmaceutical Sciences, Kumamoto University, Japan
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30
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Yoshisue K, Nagayama S, Shindo T, Kawaguchi Y. Effects of 5-fluorouracil on the drug-metabolizing enzymes of the small intestine and the consequent drug interaction with nifedipine in rats. J Pharmacol Exp Ther 2001; 297:1166-75. [PMID: 11356943] [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: 04/16/2023] Open
Abstract
5-Fluorouracil (5-FU) is a widely used antineoplastic agent. 5-FU therapy often causes gastrointestinal toxicity, which is suppressed by concomitant administration of potassium oxonate (Oxo). Here, we investigated the effect of 5-FU on the small-intestinal drug-metabolizing enzymes, which play important roles in the first-pass metabolism of drugs, in rats, by enzyme measurements and immunoblot analyses. During repeated administration of a combination of 1-(2-tetrahydrofuryl)-5-fluorouracil, an oral 5-FU-derivative drug, and 5-chloro-2,4-dihydroxypyridine (FCD), an inhibitor of 5-FU degradation, the activities of 7-ethoxyresorufin-O-deethylase, testosterone 6beta-hydroxylase, 4-methylumbelliferone UDP-glucuronyltransferase, and 1-chloro-2,4-dinitrobenzene glutathione S-transferase decreased significantly on day 4, and the activity of NADPH-cytochrome P450 (CYP) reductase decreased significantly on day 7. These effects were found to be attributable to a reduction in the enzyme protein contents in the small-intestinal mucosa. The enzymatic alterations significantly increased the plasma concentrations of orally administered nifedipine, which was prevented by concomitant administration of Oxo with FCD. However, consecutive administration of FCD for 4 days did not cause any alterations in the activity of the hepatic CYP isozyme-supported testosterone hydroxylase. These results suggest that continuous exposure to 5-FU leads to a decrease in the activities of drug-metabolizing enzymes in the intestinal mucosa by decreasing their enzyme protein contents, and increases the plasma concentrations of orally administered nifedipine, and that the sensitivity of these enzymes to the drug is greater than that of the enzymes of the liver. These effects were prevented by concomitant administration of Oxo.
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Affiliation(s)
- K Yoshisue
- Pharmacokinetics Research Laboratory, Tokushima Research Center, Taiho Pharmaceutical Co., Ltd., Tokushima, Japan.
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Komatsu T, Yamazaki H, Shimada N, Nagayama S, Kawaguchi Y, Nakajima M, Yokoi T. Involvement of microsomal cytochrome P450 and cytosolic thymidine phosphorylase in 5-fluorouracil formation from tegafur in human liver. Clin Cancer Res 2001; 7:675-81. [PMID: 11297264] [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: 02/19/2023]
Abstract
Recently, we have reported that tegafur, an anticancer agent, is biotransformed into active drug 5-fluorouracil (5-FU) by cytochromes P450 1A2, 2A6, and 2C8 in human liver microsomes (T. Komatsu et al., Drug Metab. Dispos, 28: 1457-1463, 2000). Because the conversion of tegafur into 5-FU has also been reported to be catalyzed by cytosolic thymidine phosphorylase (dThdPase), the involvement of human liver microsomes and cytosol and individual differences in 5-FU formation from tegafur were investigated. In 14 human samples, the mean rates of 5-FU formation in liver microsomes were 5-fold and 2-fold higher than those in liver cytosol at substrate concentrations of 100 microM and 1 mM tegafur, respectively. In the presence of 5-chloro-2,4-dihydroxypyridine, a dihydropyrimidine dehydrogenase inhibitor, the rates of 5-FU formation by the combination of liver microsomes and cytosol showed 5- and 3-fold interindividual differences at 100 microM and 1 mM tegafur, respectively. Kinetic analysis of human liver cytosolic 5-FU formation indicated an apparent higher Km value (16 +/- 4 mM) than that of liver microsomes (1.8 +/- 0.3 mM) with similar Vmax values. Human liver cytosolic 5-FU formation was confirmed to be catalyzed by dThdPase with correlation and chemical inhibition studies. These results suggested that 5-FU formation from tegafur in human liver was mainly catalyzed by microsomal P450 at low concentrations of tegafur, but the contribution of cytosolic 5-FU formation by dThdPase would be important at high concentrations.
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Affiliation(s)
- T Komatsu
- Faculty of Pharmaceutical Sciences, Kanazawa University, Japan
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Kitazono M, Okumura H, Ikeda R, Sumizawa T, Furukawa T, Nagayama S, Seto K, Aikou T, Akiyama S. Reversal of LRP-associated drug resistance in colon carcinoma SW-620 cells. Int J Cancer 2001. [PMID: 11149411 DOI: 10.1002/1097-0215(20010101)91:1<126::aid-ijc1018>3.0.co;2-8] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Resistance to multiple drugs is mediated by lung resistance-related protein (LRP) as well as P-glycoprotein (P-gp) and multidrug resistance protein (MRP). The levels of expression of LRP mRNA and LRP in a human colon carcinoma cell line, SW-620, were increased by the differentiation-inducing agent, sodium butyrate (NaB). Treatment of SW-620 cells with NaB for 2 weeks conferred resistance to adriamycin (ADM) and VP-16. The resistance was almost completely reversed by PAK-104P, a pyridine analog, but not by cepharanthine. ADM accumulated mainly in the nuclei of SW-620 cells not treated with NaB and in the cytoplasm of SW-620 cells treated with NaB. When the NaB-treated SW-620 cells were incubated with ADM in the presence of PAK-104P, the accumulation of ADM in nuclei was substantially increased. Isolated nuclei from untreated cells accumulated more ADM than nuclei from NaB-treated cells. Efflux of ADM from the nuclei isolated from NaB-treated cells was enhanced. PAK-104P and an antibody against LRP increased the accumulation of ADM in the isolated nuclei from NaB-treated cells, and inhibited the enhanced efflux of ADM from the nuclei. These findings suggest that at least in part, PAK-104P reverses LRP-mediated drug resistance by inhibiting the efflux of ADM from nuclei. PAK-104P may be useful for reversing MDR in tumors that overexpress LRP.
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Affiliation(s)
- M Kitazono
- Department of Cancer Chemotherapy, Institute for Cancer Research, Kagoshima University, Japan
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Abstract
[figure: see text] Catalytic asymmetric aldol reactions catalyzed by lanthanide trifluoromethanesulfonates in aqueous media have been realized for the first time using a chiral crown ether.
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Affiliation(s)
- S Kobayashi
- Graduate School of Pharmaceutical Sciences, University of Tokyo, CREST, Japan Science and Technology Corporation (JST), Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
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Abstract
Resistance to multiple drugs is mediated by lung resistance-related protein (LRP) as well as P-glycoprotein (P-gp) and multidrug resistance protein (MRP). The levels of expression of LRP mRNA and LRP in a human colon carcinoma cell line, SW-620, were increased by the differentiation-inducing agent, sodium butyrate (NaB). Treatment of SW-620 cells with NaB for 2 weeks conferred resistance to adriamycin (ADM) and VP-16. The resistance was almost completely reversed by PAK-104P, a pyridine analog, but not by cepharanthine. ADM accumulated mainly in the nuclei of SW-620 cells not treated with NaB and in the cytoplasm of SW-620 cells treated with NaB. When the NaB-treated SW-620 cells were incubated with ADM in the presence of PAK-104P, the accumulation of ADM in nuclei was substantially increased. Isolated nuclei from untreated cells accumulated more ADM than nuclei from NaB-treated cells. Efflux of ADM from the nuclei isolated from NaB-treated cells was enhanced. PAK-104P and an antibody against LRP increased the accumulation of ADM in the isolated nuclei from NaB-treated cells, and inhibited the enhanced efflux of ADM from the nuclei. These findings suggest that at least in part, PAK-104P reverses LRP-mediated drug resistance by inhibiting the efflux of ADM from nuclei. PAK-104P may be useful for reversing MDR in tumors that overexpress LRP.
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Affiliation(s)
- M Kitazono
- Department of Cancer Chemotherapy, Institute for Cancer Research, Kagoshima University, Japan
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Ikeda K, Yoshisue K, Matsushima E, Nagayama S, Kobayashi K, Tyson CA, Chiba K, Kawaguchi Y. Bioactivation of tegafur to 5-fluorouracil is catalyzed by cytochrome P-450 2A6 in human liver microsomes in vitro. Clin Cancer Res 2000; 6:4409-15. [PMID: 11106261] [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: 02/18/2023]
Abstract
Tegafur is a prodrug of 5-fluorouracil (5-FU) consisting of a new class of oral chemotherapeutic agents, tegafur/uracil and S-1, which are classified as dihydropyrimidine dehydrogenase inhibitory fluoropyrimidines. It is bioactivated to 5-FU via 5'-hydroxylation mediated by cytochrome P-450 (CYP). However, which isoform(s) of CYP is responsible for the bioactivation process of tegafur remains unclear. The purpose of the present study was to identify the human CYP isoform(s) involved in the metabolic activation of tegafur using human liver microsomes and cDNA-expressed human CYPs. The formation of 5-FU from tegafur in human liver microsomes showed biphase kinetics with Km and Vmax values for the high-affinity component of 0.43 +/- 0.05 mM and 4.02 +/- 1.70 nmol/mg/min (mean +/- SD, n = 4), respectively. In the correlation study using a panel of 10 human liver microsomes, the formation of 5-FU from tegafur showed a significant correlation (r = 0.98; P < 0.001) with coumarin 7-hydroxylation, a marker activity of CYP2A6. In addition, a specific substrate of CYP2A6 and anti-CYP2A6 antibody inhibited the formation of 5-FU by 90% in human liver microsomes. Moreover, cDNA-expressed CYP2A6 showed the highest activity for the formation of 5-FU among 10 cDNA-expressed CYPs, with a Km value similar to that found for the high-affinity component in human liver microsomes. These findings clearly suggest that CYP2A6 is a principal enzyme responsible for the bioactivation process of tegafur in human liver microsomes. However, to what extent the bioactivation of tegafur by CYP2A6 accounts for the formation of 5-FU in vivo remains unclear, because the formation of 5-FU from tegafur is also catalyzed by the soluble fraction of a 100,000 x g supernatant and also derived from spontaneous degradation of tegafur.
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Affiliation(s)
- K Ikeda
- Pharmacokinetics Research Laboratory, Tokushima Research Center, Taiho Pharmaceutical Co., Ltd., Japan
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Abstract
Group 3-15 metal chlorides (Lewis acids) were classified on the basis of activity and aldehyde- and aldimine-selectivity in an addition reaction of a silyl enol ether. Based on the experimental results, metal chlorides (Lewis acids) were classified as follows: A, active; B, weak; C, inactive for the activation of the aldehyde and/or aldimines. Groups A and B were further divided into A-1 or B-1 (aldehyde-selective), A-2 or B-2 (aldimine-selective), and A-3 or B-3 (neutral). The final classification is as follows: A-1, BCl3, AlCl3, TiCl4, GaCl3, ZrCl4, SnCl4, SbCl5, SbCl3, HfCl4, ReCl5; A-2, ScCl3, FeCl3, InCl3, BiCl3; A-3, NbCl5, MoCl3. MoCl5, SnCl2, TaCl5, WCl5. WCl6, ReCl3, TlCl3; B-1, none; B-2, SiCl4, FeCl2, CoCl2, CuCl, CuCl2, GeCl4, YCl3, OsCl3, PtCl2; B-3, ZnCl2, RuCl3; C, VCl3, CrCl3, MnCl2, NiCl2, RhCl3, PdCl2, AgCl, CdCl2, IrCl3, AuCl, HgCl2, HgCl, PbCl2. This classification has revealed several new fundamental aspects of elements (metal chlorides) as Lewis acids.
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Affiliation(s)
- S Kobayashi
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, CREST, Japan Science and Technology Corporation.
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37
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Yoshisue K, Masuda H, Matsushima E, Ikeda K, Nagayama S, Kawaguchi Y. Tissue distribution and biotransformation of potassium oxonate after oral administration of a novel antitumor agent (drug combination of tegafur, 5-chloro-2,4-dihydroxypyridine, and potassium oxonate) to rats. Drug Metab Dispos 2000; 28:1162-7. [PMID: 10997934] [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: 02/17/2023] Open
Abstract
S-1, a new oral 5-fluorouracil (5-FU)-derivative antitumor agent, is composed of tegafur, 5-chloro-2,4-dihydropyridine, and potassium oxonate (Oxo). Oxo, which inhibits the phosphorylation of 5-FU, is added to reduce the gastrointestinal (GI) toxicity of the agent. In this study, we investigated the tissue distribution and the metabolic fate of Oxo in rats after oral administration of S-1. Oxo was mainly distributed to the intracellular sites of the small intestines in a much higher concentration than 5-FU, but little distributed to other tissues, including tumorous ones in which 5-FU was observed after oral administration of S-1. Plasma concentration-time profiles of Oxo and its metabolites after i.v. and oral administration of S-1 revealed that Oxo was mainly converted to cyanuric acid in the GI tract. Furthermore, the analysis of drug-related radioactivity in GI contents and in vitro studies suggested that Oxo was converted to cyanuric acid by two routes, the first being direct conversion by the gut flora in the cecum, and the second, conversion by xanthine oxidase or perhaps by aldehyde oxidase after degradation to 5-azauracil (5-AZU) by the gastric acid. These results indicate that, although a part of the administered Oxo was degraded in the GI tract, Oxo was mainly distributed to the intracellular sites of the small intestines in a much higher concentration than 5-FU and that little was distributed to other tissues, including tumors. We conclude that this is the reason why Oxo suppresses the GI toxicity of 5-FU without affecting its antitumor activity.
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MESH Headings
- Administration, Oral
- Allopurinol/pharmacology
- Animals
- Antimetabolites, Antineoplastic/metabolism
- Antimetabolites, Antineoplastic/pharmacokinetics
- Area Under Curve
- Biotransformation
- Carbon Radioisotopes
- Chlorpromazine/pharmacology
- Drug Combinations
- Drugs, Chinese Herbal/pharmacology
- Fluorouracil/blood
- Fluorouracil/metabolism
- Glycyrrhiza
- Intestine, Small/metabolism
- Male
- Microsomes, Liver/drug effects
- Microsomes, Liver/metabolism
- Oxonic Acid/blood
- Oxonic Acid/metabolism
- Oxonic Acid/pharmacokinetics
- Paeonia
- Pyridines/blood
- Pyridines/metabolism
- Pyridines/pharmacokinetics
- Rats
- Rats, Inbred Strains
- Sarcoma, Yoshida/drug therapy
- Sarcoma, Yoshida/metabolism
- Tegafur/blood
- Tegafur/metabolism
- Tegafur/pharmacokinetics
- Tissue Distribution
- Triazines/blood
- Triazines/metabolism
- Uracil/analogs & derivatives
- Uracil/metabolism
- Xanthine Oxidase/metabolism
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Affiliation(s)
- K Yoshisue
- Pharmacokinetics Research Laboratory, Tokushima Research Center, Taiho Pharmaceutical Co., Ltd., Tokushima, Japan.
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38
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Yoshisue K, Hironaga K, Yamaguchi S, Yamamoto A, Nagayama S, Kawaguchi Y. Reduction of 5-fluorouracil (5-FU) gastrointestinal (GI) toxicity resulting from the protection of thymidylate synthase (TS) in GI tissue by repeated simultaneous administration of potassium oxonate (Oxo) in rats. Cancer Chemother Pharmacol 2000; 46:51-6. [PMID: 10912578 DOI: 10.1007/s002800000123] [Citation(s) in RCA: 20] [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: 12/13/2022]
Abstract
PURPOSE An important cytotoxic effect of 5-fluorouracil (5-FU) is the inactivation of thymidylate synthase (TS) (EC 2.1.1.45) activity by the formation of a ternary complex consisting of covalently bound 5-fluorodeoxyuridine 5'-monophosphate (FdUMP), TS and 5,10-methylenetetrahydrofolate (CH2FH4). The gastrointestinal (GI) toxicity of 5-FU is also caused by its phosphorylation in the GI tract. Potassium oxonate (O(XO)) competitively inhibits pyrimidine phosphoribosyltransferase (EC 2.4.2.10), which converts 5-FU to 5-fluorouridine 5'-monophosphate (FUMP) in vitro. In this study the benefits of combining Oxo and tegafur (FT), which is a masked compound of 5-FU, in reducing the GI toxicity of 5-FU and in protecting the activity of TS in the normal GI tissues were evaluated. METHODS We administered orally a preparation of 1 M FT and 0.4 M 5-chloro-2,4-dihydroxypyridine (CDHP) with or without 1 M O(XO) (called S-1 and FT + CDHP, respectively) or vehicle only (control) to rats for ten consecutive days and compared the toxicity, the histopathological findings and the free TS activity in the GI tissues of the treated rats. RESULTS During the experimental periods, the signs of toxicity, such as a decrease in body weight, diarrhea and death, were only observed in the rats treated with FT + CDHP. The histopathological findings in the ileum and colon samples from rats treated consecutively with S-1 on day 1, day 4, day 7 and day 10 were less frequent and more mild than in the samples from rats treated with FT + CDHP. Furthermore, the free TS activities in the ileum samples of rats given S-1 and FT + CDHP were significantly decreased compared with the activity in samples from the control rats throughout the experimental periods. The free TS activities in GI tissues of rats treated with S-1 were higher than the TS activities in tissues from rats treated with FT + CDHP daily from day 4 to day 10, although activities in S-1-treated rat were decreased to almost same low levels as in FT + CDHP-treated rats on day 1. CONCLUSIONS Our results suggest that repeated simultaneous administration of Oxo and FT can effectively protect the activity of TS by decreasing FdUMP via FUMP from 5-FU in GI tissue, and may lead to a reduction in GI toxicity.
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Affiliation(s)
- K Yoshisue
- Pharmacokinetics Research Laboratory, Tokushima Research Center, Taiho Pharmaceutical Co. Ltd., Japan.
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39
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Toguchida J, Nagayama S. [Multiple exostoses]. Nihon Rinsho 2000; 58:1473-8. [PMID: 10921326] [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: 02/17/2023]
Abstract
Multiple exostoses is a hereditary disease characterized by multiple osteocartilagenous tumors, of which the histological structures are similar to those of normal epiphyses. Genetic linkage has identified three different loci for this disease: EXT1 on 8q, EXT2 on 11p, and EXT3 on 19p. The EXT1 and EXT2 genes were recently isolated and mutation analyses have been performed in a number of patients with different ethnic backgrounds. The data indicate that mutations of these genes occurred in broad regions of each gene, and the loss-of-function mutations were predominant, although there were some missense mutations that may create functionally defective protein. Tumor cells were shown to be homozygous for the mutant allele, which is consistent with the concept of these genes as tumor suppressor genes. Recent progress for the functional analyses has disclosed that these genes encode the protein with glycosyltransferase activity and regulate the diffusion of Hedgehog protein, which is the key molecule for the skeletal development. Further analyses of these genes may provide us with the knowledge for the development of epiphyses, and may open the new research field for the regeneration of epiphyses.
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Affiliation(s)
- J Toguchida
- Institute for Frontier Medical Sciences, Kyoto University
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40
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Kuwata K, Nagayama S, Hirakawa Y, Matsushima E, Kawaguchi Y. [Comparison of pharmacokinetics of 5-FU and alpha-fluoro-beta-alanine, a metabolite of 5-FU, in plasma after administration of UFT, tegafur, 5-FU or doxifluridine to rats]. Gan To Kagaku Ryoho 2000; 27:885-90. [PMID: 10897216] [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: 02/17/2023]
Abstract
Toxic effects (neurotoxicity and cardiotoxicity) of 5-FU and its derivatives have been reported by many investigators. These toxicities are considered to be caused by the inhibition of the TCA cycle by alpha-fluoro-beta-alanine (FBAL), a metabolite of 5-FU, and later metabolites. In this study, we focused on FBAL as an index of the above toxicities. We compared the concentrations of 5-FU and FBAL in plasma after administration of UFT, tegafur (FT), 5-FU or doxifluridine (5'-DFUR) to rats (75 mumol/kg) in order to evaluate which compound has the better balance of efficacy and toxicity. UFT exhibited the lowest FBAL concentration in plasma followed by FT, 5'-DFUR and 5-FU. The ratio of FBAL to 5-FU in Cmax and AUC after dosing of UFT was the lowest among these four test compounds. These data indicate that the lowest ratio of FBAL to 5-FU resulted from the inhibitory effect of uracil, a component of UFT, on the metabolism of 5-FU. In conclusion, the present results suggest that UFT has a better balance of efficacy and toxicity than FT, 5-FU and 5'-DFUR.
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Affiliation(s)
- K Kuwata
- Pharmacokinetics Research Laboratory, Tokushima Research Center, Taiho Pharmaceutical Co., Ltd
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41
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Toru S, Murakoshi T, Ishikawa K, Saegusa H, Fujigasaki H, Uchihara T, Nagayama S, Osanai M, Mizusawa H, Tanabe T. Spinocerebellar ataxia type 6 mutation alters P-type calcium channel function. J Biol Chem 2000; 275:10893-8. [PMID: 10753886 DOI: 10.1074/jbc.275.15.10893] [Citation(s) in RCA: 72] [Impact Index Per Article: 3.0] [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: 01/06/2023] Open
Abstract
Abnormal CAG repeat expansion in the alpha1A voltage-dependent calcium channel gene is associated with spinocerebellar ataxia type 6, an autosomal dominant cerebellar ataxia with a predominant loss of the Purkinje cell. A reverse transcriptase-polymerase chain reaction analysis of mRNA from mouse Purkinje cells revealed a predominant expression of the alpha1A channel lacking an asparagine-proline (NP) stretch in the domain IV (alpha1A(-NP)). Human alpha1A channels carrying various polyglutamine length with or without NP were expressed in HEK293 cells, and channel properties were compared using a whole-cell voltage clamp technique. alpha1A(-NP), corresponding to P-type channel, with 24 and 28 polyglutamines found in patients showed the voltage dependence of inactivation shifting negatively by 6 and 11 mV, respectively, from the 13 polyglutamine control. Contrarily, the alpha1A channel with NP (alpha1A(+NP)), corresponding to Q-type channel, with 28 polyglutamines exhibited a positive shift of 5 mV. These results suggest that altered function of alpha1A(-NP) may contribute to degeneration of Purkinje cells, which express predominantly alpha1A(-NP), due to the reduced Ca(2+) influx resulting from the negative shift of voltage-dependent inactivation. On the other hand, other types of neurons, expressing both alpha1A(-NP) and alpha1A(+NP), may survive because the positive shift of voltage-dependent inactivation of alpha1A(+NP) compensates Ca(2+) influx.
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Affiliation(s)
- S Toru
- Department of Neurology and Neurological Science, Japan
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42
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Yamamoto Y, Matsushima E, Nagayama S, Fukushima M, Kawaguchi Y. New anti-cancer agent S-1: metabolism based drug combination. Pharmazie 2000; 55:244. [PMID: 10756550] [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: 02/16/2023]
Affiliation(s)
- Y Yamamoto
- Pharmacokinetics Research Laboratory, Tokushima, Japan.
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43
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Satoh J, Okada K, Kishi T, Nagayama S, Kuroda Y. Cramping pain and prolonged elevation of serum creatine kinase levels in a patient with Guillain-Barré syndrome following Campylobacter jejuni enteritis. Eur J Neurol 2000; 7:107-9. [PMID: 10809924 DOI: 10.1046/j.1468-1331.2000.00018.x] [Citation(s) in RCA: 12] [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: 11/20/2022]
Abstract
We describe a patient with Guillain-Barré syndrome (GBS) following Campylobacter jejuni enteritis, accompanied with severe cramping pain and a marked increase in serum creatine kinase (CK) levels. Both conditions became evident three weeks after the onset of GBS and continued for longer than one month. In this patient, it is possible that rapid extensive denervation due to severe axonal degeneration of motor nerve terminals might have caused hyperexcitability in regional muscles, leading to recurrent muscle cramps and persistent release of muscular CK.
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Affiliation(s)
- J Satoh
- Department of Internal Medicine, Saga Medical School, Nabeshima, Saga, Japan.
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44
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Yamamoto M, Takahashi H, Nakamura T, Hioki T, Nagayama S, Ooashi N, Sun X, Ishii T, Kudo Y, Nakajima-Iijima S, Kimchi A, Uchino S. Developmental changes in distribution of death-associated protein kinase mRNAs. J Neurosci Res 1999; 58:674-83. [PMID: 10561695 DOI: 10.1002/(sici)1097-4547(19991201)58:5<674::aid-jnr8>3.0.co;2-3] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.9] [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: 11/10/2022]
Abstract
Death-associated protein kinase (DAP-kinase) is Ca(2+)/calmodulin-dependent serine/threonine kinase that contains ankyrin repeats and the death domain. It has been isolated as a positive mediator of interferon-gamma-induced apoptotic cell death of HeLa cells. In order to reveal the physiological role of DAP-kinase, the tissue distribution and developmental changes in mRNA expression of DAP-kinase were investigated by Northern blot and in situ hybridization analyses. DAP-kinase mRNA was predominantly expressed in brain and lung. In brain, DAP-kinase mRNA had already appeared at embryonic day 13 (E13) and was, thereafter, detected throughout the entire embryonic period. High levels of expression were detected in proliferative and postmitotic regions within cerebral cortex, hippocampus, and cerebellar Purkinje cells. These findings suggest that DAP-kinase may play an important role in neurogenesis where a physiological type of cell death takes place. The overall expression of DAP-kinase mRNA in the brain gradually declined at postnatal stages, and the expression became restricted to hippocampus, in which different expression patterns were observed among rostral, central, and caudal coronal sections, suggesting that DAP-kinase may be implicated in some neuronal functions. Furthermore, it was found that the expression of DAP-kinase mRNA was increased prior to a certain cell death induced by transient forebrain ischemia, indicating a possible relationship between DAP-kinase and neuronal cell death.
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Affiliation(s)
- M Yamamoto
- Pharmaceuticals Discovery Laboratory, Yokohama Research Center, Mitsubishi Chemical Corporation, Aoba-ku, Yokohama, Japan
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45
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Kitazono M, Sumizawa T, Takebayashi Y, Chen ZS, Furukawa T, Nagayama S, Tani A, Takao S, Aikou T, Akiyama S. Multidrug resistance and the lung resistance-related protein in human colon carcinoma SW-620 cells. J Natl Cancer Inst 1999; 91:1647-53. [PMID: 10511592 DOI: 10.1093/jnci/91.19.1647] [Citation(s) in RCA: 137] [Impact Index Per Article: 5.5] [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: 11/12/2022] Open
Abstract
BACKGROUND Lung resistance-related protein (LRP), the major vault protein in humans, is sometimes overexpressed in multidrug-resistant cells. Because cells transfected with the LRP gene did not express the multidrug-resistant phenotype, we investigated whether LRP is involved in multidrug resistance. METHODS SW-620 cells, a human colon carcinoma cell line, alone or transfected with an expression vector carrying a LRP-specific ribozyme or with an empty vector, were treated with sodium butyrate to induce differentiation. Expression of P-glycoprotein, multidrug resistance protein, and LRP in the cells was examined by northern and western blotting, and the efflux of doxorubicin in the cells or isolated nuclei was examined by fluorescence microscopy. RESULTS A 2-week treatment with sodium butyrate induced LRP and conferred resistance to doxorubicin, vincristine, etoposide, gramicidin D, and paclitaxel (Taxol) in SW-620 cells. Insertion of either of two LRP-specific ribozymes into SW-620 cells inhibited these activities. Levels of drugs accumulating in the cells were not decreased by sodium butyrate, suggesting that the adenosine triphosphate-binding cassette transporter is not involved in sodium butyrate-induced multidrug resistance. Doxorubicin was mainly located in the nuclei of untreated cells and in the cytoplasm of sodium butyrate-treated cells. Isolated nuclei from untreated cells or sodium butyrate-treated cells incubated with anti-LRP polyclonal antibodies contained more doxorubicin than the nuclei of sodium butyrate-treated cells alone. Efflux of doxorubicin was greater from the nuclei of sodium butyrate-treated cells than the nuclei of untreated cells or of sodium butyrate-treated cells transfected with a LRP-specific ribozyme and was inhibited by an anti-LRP polyclonal antibody. CONCLUSIONS LRP is involved in resistance to doxorubicin, vincristine, etoposide, paclitaxel, and gramicidin D and has an important role in the transport of doxorubicin from the nucleus to the cytoplasm.
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Affiliation(s)
- M Kitazono
- Department of Cancer Chemotherapy, Institute for Cancer Research, and First Department of Surgery, Faculty of Medicine
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46
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Nagayama S, Kai H, Okiyoneda T, Horikawa S, Miyata T. Characterization of CFTR expression in a human pulmonary mucoepidermoid carcinoma cell line, NCI-H292 cells. FEBS Lett 1999; 455:215-8. [PMID: 10437775 DOI: 10.1016/s0014-5793(99)00880-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [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: 10/18/2022]
Abstract
The NCI-H292 cell, a human pulmonary mucoepidermoid carcinoma cell line, is commonly used for studying bacterial and viral infections of airway epithelial cells. Dysfunction of the cystic fibrosis transmembrane conductance regulator (CFTR) is the main cause of fetal lung infection in cystic fibrosis patients. In this study, we examined CFTR expression in NCI-H292 cells to determine whether NCI-H292 cells possess sufficient, normally functioning CFTR. The results of RT-PCR and Northern blotting analysis indicated that the CFTR gene expression level was much lower in NCI-H292 cells than in T84 cells. However, Western blotting analysis showed that protein expression in NCI-H292 cells was comparable to that in T84 cells. Furthermore, whole-cell and cell-attached patch clamp electrophysiological techniques indicated that the Cl- current induced by intracellular cAMP elevation in NCI-H292 cells was comparable to that in T84 cells. These findings suggest that NCI-H292 cells with a low level of CFTR gene expression possess enough functional CFTR to show a physiological response.
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Affiliation(s)
- S Nagayama
- Department of Pharmacological Sciences, Faculty of Pharmaceutical Sciences, Kumamoto University, Japan
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47
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Shibata Y, Niwa M, Sone S, Nagayama S, Uesaka Y, Miura I. Primary malignant lymphoma of the duodenum: report of a case. Hepatogastroenterology 1998; 45:2171-4. [PMID: 9951887] [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: 02/10/2023]
Abstract
We present a case of long-term survival in primary malignant lymphoma of the duodenum treated with a curative surgical resection and post-operative chemotherapy. A 72 year-old man was admitted to our hospital complaining of epigastric discomfort. Endoscopy revealed an ulcerative tumor in the duodenal bulb. The tumor was diagnosed histologically as malignant lymphoma by endoscopic biopsy. A distal gastrectomy and duodenal bulb resection were performed with lymph nodes dissection. The tumor was histologically classified as B-cell phenotype, large cell, immunoblastic lymphoma of high grade, according to the Working Formulation. The patient received CHOP (cyclophosphamide, doxorubicin, vincristine and prednisone) chemotherapy after the operation, and he has no sign of recurrence during a follow-up period of 6 years.
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Affiliation(s)
- Y Shibata
- Department of Surgery, Yokote Public Hospital, Akita University School of Medicine, Japan.
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48
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Nagayama S, Chen ZS, Kitazono M, Takebayashi Y, Niwa K, Yamada K, Tani A, Haraguchi M, Sumizawa T, Furukawa T, Aikou T, Akiyama S. Increased sensitivity to vincristine of MDR cells by the leukotriene D4 receptor antagonist, ONO-1078. Cancer Lett 1998; 130:175-82. [PMID: 9751271 DOI: 10.1016/s0304-3835(98)00132-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.0] [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: 11/21/2022]
Abstract
The leukotriene D4 (LTD4) receptor antagonist, 4-oxo-8-[p-(4-phenylbutyloxy)benzoylamino]-2-(tetrazol-5-yl) -4H-1-benzopyran hemihydrate (ONO-1078) is used for the treatment of allergic asthma and other immediate hypersensitivity diseases. We examined the effect of ONO-1078 on the sensitivity to vincristine (VCR) of MRP overexpressing multidrug-resistant CV60 and its parental drug-sensitive KB-3-1 cell lines. The sensitivity to VCR of KB-3-1 and CV60 cells was increased 13- and 15-fold, respectively, by ONO-1078 at the maximum non-toxic concentration (100 microM). The VCR sensitivity of multidrug-resistant KB-C2 cells that overexpressed P-gp was increased 2.6-fold by ONO-1078. The accumulation of VCR in KB-3-1, CV60 and KB-C2 cells was significantly increased by ONO-1078. The efflux of VCR from KB-3-1 cells was not inhibited, but that from CV60 cells was enhanced compared with that from KB-3-1 cells and was partially inhibited by ONO-1078. ONO-1078 competitively inhibited the ATP-dependent [3H]LTC4 uptake in membrane vesicles isolated from CV60 cells. These findings suggest that ONO-1078 inhibits the transporting activity of MRP and that ONO-1078 increases the sensitivity to VCR of KB-3-1 cells by increasing the VCR uptake in the cells.
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Affiliation(s)
- S Nagayama
- The Institute for Cancer Research, Faculty of Medicine, Kagoshima University, Sakuragaoka, Japan
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49
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Nagayama S, Kishikawa H, Yukitake M, Matsui M, Kuroda Y. [A case of familial myoclonus showing extremely benign clinical course]. Rinsho Shinkeigaku 1998; 38:430-4. [PMID: 9805989] [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: 02/09/2023]
Abstract
We report a patient with familial myoclonus showing an extremely benign clinical course. The patient was a 70-year-old woman, who first noticed shaking of hands at age of 25. The symptom did not worsen for more than 40 years. She visited our hospital at the age of 70 because of disturbance in chores because of worsening of her hand shaking in the past one year. A family history showed that 4 members had similar symptoms and that the two were afflicted with fits of loss of consciousness. On neurologic examination, rhythmic myoclonic jerks were noted in all the extremities, more in the upper limbs, both at rest and during action. Tandem gait was mildly disturbed. The remainings of neurologic examination were normal. SEP and jerk-locked back averaging provided evidence of cortical myoclonus. EEG showed multifocal polyspike discharges. Gene analysis for DRPLA, pyruvate and lactate levels in serum and the cerebrospinal fluid, serum amino acid levels, and CSF HVA and 5-HIAA levels were all normal. No brain atrophy was noted in cranial MRI. Myoclonus was markedly reduced after administration of clonazepam. The clinical features and electrophysiological data of our patient are consistent with the clinical diagnosis of familial essential myoclonus and epilepsy/benign adult familial myoclonic epilepsy.
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Affiliation(s)
- S Nagayama
- Department of Internal Medicine, Saga Medical School
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50
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Fukushima H, Nagayama S, Otsuka M, Takahama K, Isohama Y, Kai H, Miyata T. Inhibition of glycine-induced current by morphine in nucleus tractus solitarii neurones of guinea pigs. Methods Find Exp Clin Pharmacol 1998; 20:125-32. [PMID: 9604854 DOI: 10.1358/mf.1998.20.2.485646] [Citation(s) in RCA: 2] [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: 02/07/2023]
Abstract
We studied the effect of morphine on the current induced by glycine in acutely dissociated nucleus tractus solitarii (NTS) neurones of guinea pigs, by use of the whole-cell patch clamp technique. Morphine inhibited 30 microM glycine-induced current (Igly), without affecting the current caused by 30 microM GABA. The effect of morphine was concentration-dependent, with a maximal effect at 1 mM, and reversible. The half-maximum inhibitory concentration of morphine was 30 microM. The effect of morphine was not depressed by naloxone, an opioid antagonist. Furthermore, the effect was not substantially affected by methiothepin, a 5-HT1 antagonist, ketanserin, a 5-HT2 antagonist and MDL-72222, a 5-HT3 antagonist. Morphine at 30 microM shifted the concentration-response curve for Igly to the right without affecting the maximum value. The effect of morphine on Igly showed no use-dependence. The results indicate that morphine inhibits Igly in the NTS neurones, and further suggest that morphine at the concentration used may act on the glycine receptor-ionophore complex, but not on the Cl-channel of the complex.
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Affiliation(s)
- H Fukushima
- Department of Pharmacological Sciences, Faculty of Pharmaceutical Sciences, Kumamoto University, Japan
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