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Eriksson Y, Nakamoto M, Orita H, Miyahira T, Aoyama H, Hokama A. Early Gastric Cancer Concurrent with Gastritis Cystica Profunda Resembling Advanced Cancer. Chonnam Med J 2024; 60:87-88. [PMID: 38304123 PMCID: PMC10828076 DOI: 10.4068/cmj.2024.60.1.87] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 09/26/2023] [Indexed: 02/03/2024] Open
Affiliation(s)
- Yasuka Eriksson
- Department of Gastroenterology, Heartlife Hospital, Nakagusuku, Japan
| | - Manabu Nakamoto
- Department of Gastroenterology, Heartlife Hospital, Nakagusuku, Japan
| | - Hitoshi Orita
- Department of Gastroenterology, Heartlife Hospital, Nakagusuku, Japan
| | - Takumi Miyahira
- Department of Surgery, Heartlife Hospital, Nakagusuku, Japan
| | - Hajime Aoyama
- Department of Pathology, Heartlife Hospital, Nakagusuku, Japan
| | - Akira Hokama
- Department of Medical Checkup, Naha City Hospital, Okinawa, Japan
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2
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Koishi M, Tomota K, Nakamoto M, Yoshida H. Direct Suzuki‐Miyaura Coupling of Naphthalene‐1,8‐diaminato (dan)‐Substituted Cyclopropylboron Compounds. Adv Synth Catal 2023. [DOI: 10.1002/adsc.202300059] [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)
- M. Koishi
- Graduate School of Advanced Science and Engineering Hiroshima University Higashi-Hiroshima 739-8526 Japan
| | - K. Tomota
- Graduate School of Advanced Science and Engineering Hiroshima University Higashi-Hiroshima 739-8526 Japan
| | - M. Nakamoto
- Graduate School of Advanced Science and Engineering Hiroshima University Higashi-Hiroshima 739-8526 Japan
| | - H. Yoshida
- Graduate School of Advanced Science and Engineering Hiroshima University Higashi-Hiroshima 739-8526 Japan
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Kaku H, Toyonaga T, Tanaka S, Takihara H, Baba S, Tsubouchi E, Ikeda Y, Orita H, Nakamoto M, Horikawa Y, Chiba H, Ban H, Furumoto Y, Morita R, Kodama Y. Endoscopic Submucosal Dissection Using EndoTrac, a Novel Traction Device. Digestion 2021; 102:714-721. [PMID: 33352560 DOI: 10.1159/000511731] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 06/11/2020] [Accepted: 09/20/2020] [Indexed: 02/04/2023]
Abstract
BACKGROUND Endoscopic submucosal dissection (ESD) is recognized as a minimally invasive and curative treatment for superficial gastrointestinal (GI) cancers. However, ESD is still challenging and time-consuming with a high risk of adverse events such as bleeding and perforation. Various traction methods have been explored for maintaining good visualization of the submucosal layer during ESD. We developed a novel traction device (the EndoTrac) which can easily tie the thread and has the ability to change the towing direction. The aim of this study is to evaluate safety and feasibility of ESD using the EndoTrac for GI neoplasms. PATIENTS AND METHODS We retrospectively analyzed 44 patients (45 lesions) with esophageal, gastric, duodenal, and colorectal neoplasms who had undergone ESD using the EndoTrac device between June 2018 and May 2019. Primary outcome measures were preparation time, procedural success using the EndoTrac device, and ease of ability to change towing direction. RESULTS Mean preparation time was 2 (2-5) min in esophagus, 3 (1-5) min in stomach, 6 (5-9) min in duodenum, and 4 (2-8) min in colorectum. The procedural success rate was 100% (8/8) in esophagus, 100% (21/21) in stomach, 100% (4/4) in duodenum, and 100% (12/12) in colorectum. The rate of successful towing to both proximal and distal sides was 100% (8/8) in esophagus, 100% (21/21) in stomach, 0% (0/4) in duodenum, and 100% (12/12) in colorectum. CONCLUSIONS Use of the EndoTrac device appears to be a feasible approach to ESD for GI neoplasms.
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Affiliation(s)
- Hidetoshi Kaku
- Divison of Gastroenterology, Department of Internal Medicine, Graduate School of Medicine, Kobe University, Kobe, Japan
| | - Takashi Toyonaga
- Department of Endoscopy, Kobe University Hospital, Kobe, Japan, .,Department of Gastroenterology, Kishiwada Tokushukai Hospital, Osaka, Japan,
| | - Shinwa Tanaka
- Divison of Gastroenterology, Department of Internal Medicine, Graduate School of Medicine, Kobe University, Kobe, Japan
| | - Hiroshi Takihara
- Department of Gastroenterology, Kishiwada Tokushukai Hospital, Osaka, Japan
| | - Shinichi Baba
- Department of Gastroenterology, Kishiwada Tokushukai Hospital, Osaka, Japan
| | - Eiji Tsubouchi
- Department of Gastroenterology and Metabology, Ehime University Graduate School of Medicine, Toon, Japan
| | - Yoshio Ikeda
- Department of Gastroenterology and Metabology, Ehime University Graduate School of Medicine, Toon, Japan
| | - Hitoshi Orita
- Department of Gastroenterology, Heart Life Hospital, Okinawa, Japan
| | - Manabu Nakamoto
- Department of Gastroenterology, Heart Life Hospital, Okinawa, Japan
| | - Yohei Horikawa
- Department of Gastroenterology, Hiraka General Hospital, Yokote, Japan
| | - Hiroki Chiba
- Department of Gastroenterology, Hirosaki National Hospital, Hirosaki, Japan
| | - Hiromitsu Ban
- Department of Gastroenterology, Kusatsu Genaral Hospital, Kusatsu, Japan
| | - Youhei Furumoto
- Department of Gastroenterology, Tokyo Metropolitan Bokutoh Hospital, Tokyo, Japan
| | - Ryushin Morita
- Department of Gastroenterology, Yoka Municipal Hospital, Yabu, Japan
| | - Yuzo Kodama
- Divison of Gastroenterology, Department of Internal Medicine, Graduate School of Medicine, Kobe University, Kobe, Japan
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Kirita K, Sugiyama E, Togashi Y, Udagawa H, Irie T, Iida S, Nakamoto M, Nomura S, Ikeda T, Zenke Y, Matsumoto S, Yoh K, Niho S, Sato A, Nishikawa H, Goto K. Clinical utility of precision immunoprofiling and monitoring of the tumour microenvironment using flow cytometry and CyTOF in patients with advanced NSCLC treated with atezolizumab: Results from a phase II study for biomarker analysis (EPOC1702). Ann Oncol 2019. [DOI: 10.1093/annonc/mdz253.068] [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: 11/12/2022] Open
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5
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Toyonaga T, Ohara Y, Baba S, Takihara H, Nakamoto M, Orita H, Okuda J. Peranal endoscopic myectomy (PAEM) for rectal lesions with severe fibrosis and exhibiting the muscle-retracting sign. Endoscopy 2018; 50:813-817. [PMID: 29883977 DOI: 10.1055/a-0602-3905] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [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: 12/14/2022]
Abstract
BACKGROUND Although endoscopic submucosal dissection has enabled complete tumor resection and accurate pathological assessment in a manner that is less invasive than surgery, the complete resection of lesions with severe fibrosis in the submucosal layer and exhibiting the muscle-retracting sign is often difficult. We have devised a new method, peranal endoscopic myectomy (PAEM), for rectal lesions with severe fibrosis, in which dissection is performed between the inner circular and outer longitudinal muscles, and have examined the usefulness and safety of this new technique. METHODS All of the patients who underwent PAEM in our hospital and affiliated hospitals between July 2015 and June 2017 were retrospectively reviewed. RESULTS 10 rectal lesions were treated with PAEM. En bloc resection with a negative vertical margin was achieved in eight patients (80 %), whose lesions were mucosal (n = 2), shallow submucosal (n = 1), deep submucosal (n = 4), and muscle invasive (n = 1). The clinical course of all patients after PAEM was favorable. In patients who underwent additional surgery, anus preservation was achieved on the basis of the pathological results from PAEM. CONCLUSIONS PAEM for lesions with severe fibrosis exhibiting the muscle-retracting sign appears to be both safe and useful.
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Affiliation(s)
- Takashi Toyonaga
- Department of Endoscopy, Kobe University Hospital, Kobe, Japan.,Department of Gastroenterology, Kishiwada Tokushukai Hospital, Kishiwada, Japan
| | - Yoshiko Ohara
- Department of Endoscopy, Kobe University Hospital, Kobe, Japan
| | - Shinichi Baba
- Department of Gastroenterology, Kishiwada Tokushukai Hospital, Kishiwada, Japan
| | - Hiroshi Takihara
- Department of Gastroenterology, Kishiwada Tokushukai Hospital, Kishiwada, Japan
| | - Manabu Nakamoto
- Department of Gastroenterology, Heart Life Hospital, Okinawa, Japan
| | - Hitoshi Orita
- Department of Gastroenterology, Heart Life Hospital, Okinawa, Japan
| | - Junji Okuda
- Department of General and Gastroenterological Surgery, Osaka Medical College, Takatsuki, Japan
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Yoshikawa Y, Nakamoto M, Hoshi T, Nakamura M, Imai S, Kawase Y, Matsuo H, Saito N. P1788A novel software for on-site estimation of fractional flow reserve using coronary computed tomography images. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1788] [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)
- Y Yoshikawa
- Kyoto University Graduate School of Medicine, Department of Cardiovascular Medicine, Kyoto, Japan
| | | | - T Hoshi
- EBM Corporation, Tokyo, Japan
| | - M Nakamura
- Nagoya Institute of Technology, Biomechanics Laboratory, Electrical and Mechanical Engineering, Nagoya, Japan
| | - S Imai
- Gifu Heart Center, Department of Cardiovascular Medicine, Gifu, Japan
| | - Y Kawase
- Gifu Heart Center, Department of Cardiovascular Medicine, Gifu, Japan
| | - H Matsuo
- Gifu Heart Center, Department of Cardiovascular Medicine, Gifu, Japan
| | - N Saito
- Kyoto University Graduate School of Medicine, Department of Cardiovascular Medicine, Kyoto, Japan
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Koizumi N, Kajitani H, Matsui K, Hemmi T, Yamane M, Ando S, Nakamoto M, Takano K. Series production of ITER toroidal field coil double pancakes in Japan. Fusion Engineering and Design 2017. [DOI: 10.1016/j.fusengdes.2017.03.083] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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8
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Yoshino T, Kuboki Y, Nishina T, Shinozaki E, Yamazaki K, Shitara K, Okamoto W, Kajiwara T, Matsumoto T, Tsushima T, Mochizuki N, Fukutani M, Nakamoto M, Hasegawa H, Sugama A, Nomura S, Sato A, Ohtsu A. PD-013 Final survival results of a multicenter phase I/II study of TAS-102 with bevacizumab for metastatic colorectal cancer patients refractory to standard therapies (C-TASK FORCE). Ann Oncol 2016. [DOI: 10.1093/annonc/mdw200.13] [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: 11/12/2022] Open
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9
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Otsuka R, Kato Y, Nishita Y, Tange C, Tomida M, Nakamoto M, Imai T, Ando F, Shimokata H. Age-related Changes in Energy Intake and Weight in Community-dwelling Middle-aged and Elderly Japanese. J Nutr Health Aging 2016; 20:383-90. [PMID: 26999237 DOI: 10.1007/s12603-016-0715-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [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: 11/28/2022]
Abstract
OBJECTIVE This study attempts to describe trends in energy intake and weight change over 12 years according to age at first participation in the study. DESIGN Prospective cohort study. SETTING The National Institute for Longevity Sciences - Longitudinal Study of Aging (NILS-LSA), a community-based study. PARTICIPANTS Participants included 922 men and 879 women who participated in the first study-wave (age 40-79 years) and also participated in at least one study-wave from the second to seventh study-wave. Each study-wave was conducted biennially. For individuals, the entire follow-up period was 12 years. MEASUREMENTS Energy intake was calculated from 3-day dietary records with photographs. Weight and height were measured under a fasting state. To estimate linear changes in energy intake and weight over 12 years according to age at first study-wave, we used the mixed-effects model. RESULTS Mean (SD) follow-up time and number of study-wave visits were 9.5 (3.7) years and 5.4 (1.8) times, respectively. The fixed effect of the interaction of age and time in energy intake and weight was statistically or marginally statistically significant both in men (p<0.01) and in women (p<0.06). In men, when energy intake was estimated according to age, the rate of decrease in energy intake increased from -6.8 to -33.8 kcal/year for ages 40-79 years. In women, the rate of decrease in energy intake slightly increased in older age groups (-9.1 to -16.7 kcal/year for ages 40-79 years). Weight increased in males in their 40s (0.07 kg/year from age 40) and started to decline by age 53. In women, weight started to decline around age 47 (-0.04 kg/year). CONCLUSION Twelve-year longitudinal data showed energy intake declined both in men and women in their 40s, and the rate of decrease increased in older males. Weight started to decline in men in their mid-50s and women in their late 40s. Further studies that focus on energy intake and weight reduction are needed to prevent weight loss or underweight in an increasingly aging society.
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Affiliation(s)
- R Otsuka
- Rei Otsuka, Section of NILS-LSA, National Center for Geriatrics and Gerontology, 7-430, Morioka-cho, Obu, Aichi 474-8511, Japan; , Tel: +81-562-46-2311, Fax: +81-562-44-6593
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Hirosue A, Nakamoto M, Yamamoto T, Matsuoka Y, Nakamura C, Kawahara K, Yoshida R, Hiraki A, Nakayama H, Shinohara M. Epigenetic alterations in chemoresistance and radioresistance of oral squamous cell carcinoma. Int J Oral Maxillofac Surg 2015. [DOI: 10.1016/j.ijom.2015.08.126] [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: 10/22/2022]
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11
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Imaeda N, Wakai K, Goto C, Kamano SK, Nanri H, Hosono S, Oze I, Watanabe M, Fukuda N, Yamaguchi M, Nakamoto M, Nakahata NT, Tanaka H, Group JMS. Optimal Food Consumption among Japanese Adults with Adequate Nutritional Intake According to the Dietary Reference Intakes for Japanese. Int J Epidemiol 2015. [DOI: 10.1093/ije/dyv096.078] [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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12
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Nahar S, Nakamoto M, Hokama A, Kobashigawa C, Kaida M, Kinjo T, Hirata T, Kinjo N, Saio M, Yoshimi N, Ohtsuki Y, Fujita J. Peritoneal Malignant Mesothelioma with Epithelioid Type, Demonstrating High Serum and Ascitic KL-6 Levels: Immunohistochemical Analyses. Rare Tumors 2015; 7:5947. [PMID: 26500734 PMCID: PMC4600996 DOI: 10.4081/rt.2015.5947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Accepted: 06/14/2015] [Indexed: 11/22/2022] Open
Abstract
We report a case of KL-6 producing peritoneal malignant mesothelioma. A 56-year-old woman was referred to our hospital on November 2005 with severe abdominal distention. Peritoneal malignant mesothelioma with epithelioid type was diagnosed by clinical symptoms, laboratory investigations, imaging studies, and immunohistochemical examination of known tumor markers. In addition, high serum and ascitic KL-6 levels were observed and the immunostaining of the tumor for KL-6 was evident. We thus consider KL-6 to be a potential novel marker for peritoneal malignant mesothelioma with epithelioid type.
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Affiliation(s)
- Saifun Nahar
- Department of Infectious, Respiratory, and Digestive Medicine, University of the Ryukyus , Nishihnara, Japan
| | - Manabu Nakamoto
- Department of Endoscopy, University of the Ryukyus , Nishihnara, Japan
| | - Akira Hokama
- Department of Endoscopy, University of the Ryukyus , Nishihnara, Japan
| | | | - Masatoshi Kaida
- Department of Endoscopy, University of the Ryukyus , Nishihnara, Japan
| | - Tetsu Kinjo
- Department of Infectious, Respiratory, and Digestive Medicine, University of the Ryukyus , Nishihnara, Japan
| | - Tetsuo Hirata
- Department of Infectious, Respiratory, and Digestive Medicine, University of the Ryukyus , Nishihnara, Japan
| | - Nagisa Kinjo
- Department of Endoscopy, University of the Ryukyus , Nishihnara, Japan
| | - Masanao Saio
- Department of Pathology and Oncology, University of the Ryukyus , Nishihnara, Japan
| | - Naoki Yoshimi
- Department of Pathology and Oncology, University of the Ryukyus , Nishihnara, Japan
| | - Yuji Ohtsuki
- Division of Pathology, Matsuyama-shimin Hospital , Japan
| | - Jiro Fujita
- Department of Infectious, Respiratory, and Digestive Medicine, University of the Ryukyus , Nishihnara, Japan
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Yamazaki K, Kuboki Y, Nishina T, Shinozaki E, Shitara K, Okamoto W, Kajiwara T, Matsumoto T, Tsushima T, Mochizuki N, Fukutani M, Nakamoto M, Hasegawa Y, Sugama A, Nomura S, Sato A, Ohtsu A, Yoshino T. 2116 A multicenter phase I/II study of TAS-102 with bevacizumab for metastatic colorectal cancer refractory to standard therapies (C-TASK FORCE). Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)31038-3] [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: 10/22/2022]
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14
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Yamashita Y, Yakiwara H, Asano Y, Shimizu H, Uchida K, Hirano S, Umakoshi K, Miyamachi H, Nakamoto M, Fukui M, Kamizono M, Kanehara H, Yamada T, Shinohara M, Obara K. Migrating tremor off southern Kyushu as evidence for slow slip of a shallow subduction interface. Science 2015; 348:676-9. [DOI: 10.1126/science.aaa4242] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Accepted: 03/30/2015] [Indexed: 11/02/2022]
Affiliation(s)
- Y. Yamashita
- Institute of Seismology and Volcanology (SEVO), Faculty of Sciences, Kyushu University, 2-5643-29 Shin’yama, Shimabara 855-0843, Japan
| | - H. Yakiwara
- Nansei-Toko Observatory for Earthquakes and Volcanoes, Graduate School of Science and Engineering, Kagoshima University, 10861 Yoshino-cho, Kagoshima 892-0871, Japan
| | - Y. Asano
- National Research Institute for Earth Science and Disaster Prevention, 3-1 Tennodai, Tsukuba 305-0006, Japan
| | - H. Shimizu
- Institute of Seismology and Volcanology (SEVO), Faculty of Sciences, Kyushu University, 2-5643-29 Shin’yama, Shimabara 855-0843, Japan
| | - K. Uchida
- Institute of Seismology and Volcanology (SEVO), Faculty of Sciences, Kyushu University, 2-5643-29 Shin’yama, Shimabara 855-0843, Japan
| | - S. Hirano
- Nansei-Toko Observatory for Earthquakes and Volcanoes, Graduate School of Science and Engineering, Kagoshima University, 10861 Yoshino-cho, Kagoshima 892-0871, Japan
| | - K. Umakoshi
- Graduate School of Fisheries Science and Environmental Studies, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
| | - H. Miyamachi
- Nansei-Toko Observatory for Earthquakes and Volcanoes, Graduate School of Science and Engineering, Kagoshima University, 10861 Yoshino-cho, Kagoshima 892-0871, Japan
| | - M. Nakamoto
- Institute of Seismology and Volcanology (SEVO), Faculty of Sciences, Kyushu University, 2-5643-29 Shin’yama, Shimabara 855-0843, Japan
| | - M. Fukui
- Institute of Seismology and Volcanology (SEVO), Faculty of Sciences, Kyushu University, 2-5643-29 Shin’yama, Shimabara 855-0843, Japan
| | - M. Kamizono
- Institute of Seismology and Volcanology (SEVO), Faculty of Sciences, Kyushu University, 2-5643-29 Shin’yama, Shimabara 855-0843, Japan
| | - H. Kanehara
- Faculty of Fisheries, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
| | - T. Yamada
- Earthquake Research Institute (ERI), The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan
| | - M. Shinohara
- Earthquake Research Institute (ERI), The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan
| | - K. Obara
- Earthquake Research Institute (ERI), The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan
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15
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Paul-Prasanth B, Bhandari RK, Kobayashi T, Horiguchi R, Kobayashi Y, Nakamoto M, Shibata Y, Sakai F, Nakamura M, Nagahama Y. Erratum: Estrogen oversees the maintenance of the female genetic program in terminally differentiated gonochorists. Sci Rep 2015. [PMCID: PMC3892714 DOI: 10.1038/srep03787] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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16
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Hirosue A, Nakamura C, Nakamoto M, Kawahara K, Muta A, Hirayama M, Yoshida R, Nagata M, Nakayama H, Hiraki A, Shinohara M. Epigenetic alterations in the drug resistance of oral squamous cell carcinoma. J Oral Maxillofac Surg 2014. [DOI: 10.1016/j.joms.2014.06.316] [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: 10/24/2022]
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17
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Van Compernolle B, Bortnik J, Pribyl P, Gekelman W, Nakamoto M, Tao X, Thorne RM. Direct detection of resonant electron pitch angle scattering by whistler waves in a laboratory plasma. Phys Rev Lett 2014; 112:145006. [PMID: 24765981 DOI: 10.1103/physrevlett.112.145006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Indexed: 06/03/2023]
Abstract
Resonant interactions between energetic electrons and whistler mode waves are an essential ingredient in the space environment, and in particular in controlling the dynamic variability of Earth's natural radiation belts, which is a topic of extreme interest at the moment. Although the theory describing resonant wave-particle interaction has been present for several decades, it has not been hitherto tested in a controlled laboratory setting. In the present Letter we report on the first laboratory experiment to directly detect resonant pitch angle scattering of energetic (∼keV) electrons due to whistler mode waves. We show that the whistler mode wave deflects energetic electrons at precisely the predicted resonant energy, and that varying both the maximum beam energy, and the wave frequency, alters the energetic electron beam very close to the resonant energy.
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Affiliation(s)
- B Van Compernolle
- Department of Physics, University of California, Los Angeles, California 90095, USA
| | - J Bortnik
- Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, California 90095, USA
| | - P Pribyl
- Department of Physics, University of California, Los Angeles, California 90095, USA
| | - W Gekelman
- Department of Physics, University of California, Los Angeles, California 90095, USA
| | - M Nakamoto
- Department of Physics, University of California, Los Angeles, California 90095, USA
| | - X Tao
- Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, California 90095, USA
| | - R M Thorne
- Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, California 90095, USA
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Otsuka R, Kato Y, Nishita Y, Tange C, Nakamoto M, Tomida M, Imai T, Ando F, Shimokata H. Cereal Intake Increases and Dairy Products Decrease Risk of Cognitive Decline among Elderly Female Japanese. J Prev Alzheimers Dis 2014; 1:160-167. [PMID: 29251743 DOI: 10.14283/jpad.2014.29] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND If cognitive decline can be prevented through changes in daily diet with no medical intervention, it will be highly significant for dementia prevention. OBJECTIVES This longitudinal study examined the associations of different food intakes on cognitive decline among Japanese subjects. DESIGN Prospective cohort study. SETTING The National Institute for Longevity Sciences - Longitudinal Study of Aging, a community-based study. PARTICIPANTS Participants included 298 males and 272 females aged 60 to 81 years at baseline who participated in the follow-up study (third to seventh wave) at least one time. MEASUREMENTS Cognitive function was assessed with the Mini-Mental State Examination (MMSE) in all study waves. Nutritional intake was assessed using a 3-day dietary record in the second wave. Cumulative data among participants with an MMSE >27 in the second wave were analyzed using a generalized estimating equation. Multivariate adjusted odds ratios (OR) and 95% confidence intervals (CI) for an MMSE score ≤27 in each study wave according to a 1 standard deviation (SD) increase of each food intake at baseline were estimated, after adjusting for age, follow-up time, MMSE score at baseline, education, body mass index, annual household income, current smoking status, energy intake, and history of diseases. RESULTS In men, after adjusting for age, and follow-up period, MMSE score at baseline, the adjusted OR for a decline in MMSE score was 1.20 (95% CI, 1.02-1.42; p=0.032) with a 1-SD increase in cereal intake. After adjusting for education and other confounding variables, the OR for a decrease in MMSE score did not reach statistical significance for this variable. In women, multivariate adjusted OR for MMSE decline was 1.43 (95% CI, 1.15-1.77; p=0.001) with a 1-SD increase in cereal intake and 0.80 (95% CI, 0.65-0.98; p=0.034) with a 1-SD increase in milk and dairy product intake. CONCLUSIONS This study indicates that a 1-SD (108 g/day) decrease in cereal intake and a 1-SD (128 g/day) increase in milk and dairy product intake may have an influence of cognitive decline in community-dwelling Japanese women aged 60 years and older. Further studies are needed in order to explore the potential causal relationship.
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Affiliation(s)
- R Otsuka
- Rei Otsuka, Section of NILS-LSA, National Center for Geriatrics and Gerontology, 35 Gengo, Morioka-cho, Obu, Aichi 474-8511, Japan, , T +81-562-46-2311 F +81-562-44-6593
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Uemura H, Katsuura-Kamano S, Yamaguchi M, Nakamoto M, Hiyoshi M, Arisawa K. Abundant daily non-sedentary activity is associated with reduced prevalence of metabolic syndrome and insulin resistance. J Endocrinol Invest 2013; 36:1069-75. [PMID: 23886980 DOI: 10.3275/9066] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [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: 11/17/2022]
Abstract
BACKGROUND Non-exercise activity thermogenesis has recently drawn attention because of its potential to prevent weight gain. AIM This study evaluated the relationships between the duration of daily non-sedentary activities and the prevalence of metabolic syndrome and insulin resistance (IR) in the Japanese population. MATERIAL/SUBJECTS AND METHODS A total of 518 eligible subjects (380 men and 138 women) who attended the Tokushima Prefectural General Health Checkup Center and participated in the baseline survey of a cohort study conducted in Tokushima Prefecture, Japan were analyzed. Information about lifestyle characteristics including leisure-time exercise and daily non-exercise activities was obtained from a questionnaire. Logistic and multiple linear regression analyses were performed to evaluate the associations between the duration of daily non-exercise non-sedentary activities (beyond sitting) and prevalence of metabolic syndrome (and its components) and IR. RESULTS Subjects with longer duration of daily non-sedentary activities had significantly lower adjusted odds ratios for metabolic syndrome (p for trend =0.024), abdominal obesity (p for trend =0.023), and low HDLcholesterol levels (p for trend =0.002), after adjustment for sex, age, and other probable covariates including leisure-time exercise. Longer duration of daily non-sedentary activities was further associated with lower homeostasis model of assessment- IR (HOMA-IR) values (p for trend =0.009). CONCLUSIONS Our results suggest that abundant daily non-sedentary activity might be associated with a lower prevalence of metabolic syndrome, especially for the components of central obesity and low HDL-cholesterol levels, and with a lower prevalence of IR, independent of leisure-time exercise.
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Affiliation(s)
- H Uemura
- Department of Preventive Medicine, Institute of Health Biosciences, The University of Tokushima Graduate School, 3-18-15, Kuramoto- cho, Tokushima 770-8503, Japan.
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Kodani M, Igishi T, Sakamoto T, Touge H, Izumi H, Ito S, Kurai J, Yamaguchi K, Nakamoto M, Shimizu E. Rechallenge with EGFR-TKI after a Drug Holiday, Retrospective Study in Single Institution. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt459.60] [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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Paul-Prasanth B, Bhandari RK, Kobayashi T, Horiguchi R, Kobayashi Y, Nakamoto M, Shibata Y, Sakai F, Nakamura M, Nagahama Y. Estrogen oversees the maintenance of the female genetic program in terminally differentiated gonochorists. Sci Rep 2013; 3:2862. [PMID: 24096556 PMCID: PMC3791451 DOI: 10.1038/srep02862] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [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] [Received: 05/13/2013] [Accepted: 09/12/2013] [Indexed: 11/09/2022] Open
Abstract
The sexual plasticity of the gonads is not retained after the completion of sex differentiation in vertebrates, except in some hermaphroditic species. Here, we report that the depletion of estradiol-17β (E2) by aromatase inhibitors (AI) for up to six months resulted in a functional female-to-male sex reversal in sexually-mature adults of two gonochoristic fish species, Nile tilapia and medaka. The sex-reversed fish showed a typical male pattern of E2 and androgen levels, secondary sexual characteristics, and male-like sex behavior, producing fertile sperm. Conversely, co-treatment of E2 inhibited AI-induced sex reversal. In situ hybridization of medaka gonads during AI-induced sex reversal indicated that cysts on the dorsal side of the adult ovaries are the origin of germ cells and Sertoli cells in the newly formed testicular tissue. Gonochoristic fish maintain their sexual plasticity until adulthood and E2 plays a critical role in maintaining the female phenotype.
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Affiliation(s)
- B Paul-Prasanth
- 1] Solution-Oriented Research for Science and Technology (SORST) [2] Laboratory of Reproductive Biology, National Institute for Basic Biology, Okazaki 444-8585, Japan [3] [4]
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Iraha A, Chinen H, Hokama A, Yonashiro T, Kinjo T, Kishimoto K, Nakamoto M, Hirata T, Kinjo N, Higa F, Tateyama M, Kinjo F, Fujita J. Fucoidan enhances intestinal barrier function by upregulating the expression of claudin-1. World J Gastroenterol 2013; 19:5500-5507. [PMID: 24023493 PMCID: PMC3761103 DOI: 10.3748/wjg.v19.i33.5500] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Revised: 07/07/2013] [Accepted: 07/25/2013] [Indexed: 02/06/2023] Open
Abstract
AIM: To evaluate the protective effects of fucoidan on oxidative stress-induced barrier disruption in human intestinal epithelial cells.
METHODS: In Caco-2 cell monolayer models, the disruption of barrier function by oxidative stress is mediated by H2O2. The integrity of polarized Caco-2 cell monolayers was determined by measuring the transepithelial resistance (TER) and permeability was estimated by measuring the paracellular transport of FITC-labeled 4-kDa dextran (FD4). The protective effects of fucoidan on epithelial barrier functions on polarized Caco-2 cell monolayers were evaluated by TER and FD4 flux. The expression of tight junction (TJ) proteins was assessed using reverse-transcription polymerase chain reaction (RT-PCR) and immunofluorescence staining.
RESULTS: Without H2O2 treatment, fucoidan significantly increased the TER compared to control (P < 0.05), indicating a direct enhancement of intestinal epithelial barrier function. Next, H2O2 disrupted the epithelial barrier function in a time-dependent manner. Fucoidan prevented the H2O2-induced destruction in a dose-dependent manner. Fucoidan significantly decreased H2O2-induced FD4 flux (P < 0.01), indicating the prevention of disruption in paracellular permeability. RT-PCR showed that Caco-2 cells endogenously expressed claudin-1 and -2, and occludin and that H2O2 reduced the mRNA expression of these TJ proteins. Treatment with fucoidan attenuated the reduction in the expressions of claudin-1 and claudin-2 but not occludin. Immunofluorescence staining revealed that the expression of claudin-1 was intact and high on the cell surface. H2O2 disrupted the integrity of claudin-1. Treatment with fucoidan dramatically attenuated the expression of claudin-1.
CONCLUSION: Fucoidan enhanced intestinal epithelial barrier function by upregulating the expression of claudin-1. Thus, fucoidan may be an appropriate therapy for the treatment of inflammatory bowel diseases.
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Ohira T, Hokama A, Kinjo N, Nakamoto M, Kobashigawa C, Kise Y, Yamashiro S, Kinjo F, Kuniyoshi Y, Fujita J. Detection of active bleeding from gastric antral vascular ectasia by capsule endoscopy. World J Gastrointest Endosc 2013; 5:138-140. [PMID: 23515703 PMCID: PMC3600552 DOI: 10.4253/wjge.v5.i3.138] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2012] [Revised: 10/29/2012] [Accepted: 01/07/2013] [Indexed: 02/05/2023] Open
Abstract
Gastric antral vascular ectasia (GAVE) has been recognized as one of the important causes of occult and obscure gastrointestinal bleeding. The diagnosis is typically made based on the characteristic endoscopic features, including longitudinal row of flat, reddish stripes radiating from the pylorus into the antrum that resemble the stripes on a watermelon. These appearances, however, can easily be misinterpreted as moderate to severe gastritis. Although it is believed that capsule endoscopy (CE) is not helpful for the study of the stomach with its large lumen, GAVE can be more likely to be detected at CE rather than conventional endoscopy. CE can be regarded as “physiologic” endoscopy, without the need for gastric inflation and subsequent compression of the vasculature. The blood flow of the ecstatic vessels may be diminished in an inflated stomach. Therefore, GAVE may be prominent in CE. We herein describe a case of active bleeding from GAVE detected by CE and would like to emphasize a possibility that CE can improve diagnostic yields for GAVE.
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Ihama Y, Hokama A, Hibiya K, Kishimoto K, Nakamoto M, Hirata T, Kinjo N, Cash HL, Higa F, Tateyama M, Kinjo F, Fujita J. Diagnosis of intestinal tuberculosis using a monoclonal antibody to Mycobacterium tuberculosis. World J Gastroenterol 2012; 18:6974-80. [PMID: 23322996 PMCID: PMC3531682 DOI: 10.3748/wjg.v18.i47.6974] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2012] [Revised: 07/19/2012] [Accepted: 07/28/2012] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the utility of immunohistochemical (IHC) staining with an antibody to Mycobacterium tuberculosis (M. tuberculosis) for the diagnosis of intestinal tuberculosis (TB).
METHODS: We retrospectively identified 10 patients (4 males and 6 females; mean age = 65.1 ± 13.6 years) with intestinal TB. Clinical characteristics, including age, gender, underlying disease, and symptoms were obtained. Chest radiograph and laboratory tests, including sputum Ziehl-Neelsen (ZN) staining, M. tuberculosis culture, and sputum polymerase chain reaction (PCR) for tubercle bacilli DNA, as well as Tuberculin skin test (TST) and QuantiFERON-TB gold test (QFT), were examined. Colonoscopic records recorded on the basis of Sato’s classification were also reviewed, in addition to data from intestinal biopsies examined for histopathological findings, including hematoxylin and eosin staining, and ZN staining, as well as M. tuberculosis culture, and PCR for tubercle bacilli DNA. For the present study, archived formalin-fixed paraffin-embedded (FFPE) intestinal tissue samples were immunohistochemically stained using a commercially available species-specific monoclonal antibody to the 38-kDa antigen of the M. tuberculosis complex. These sections were also stained with the pan-macrophage marker CD68 antibody.
RESULTS: From the clinical data, we found that no patients were immunocompromised, and that the main symptoms were diarrhea and weight loss. Three patients displayed active pulmonary TB, six patients (60%) had a positive TST, and 4 patients (40%) had a positive QFT. Colonoscopic findings revealed that all patients had type 1 findings (linear ulcers in a circumferential arrangement or linear ulcers arranged circumferentially with mucosa showing multiple nodules), all of which were located in the right hemicolon and/or terminal ileum. Seven patients (70%) had concomitant healed lesions in the ileocecal area. No acid-fast bacilli were detected with ZN staining of the intestinal tissue samples, and both M. tuberculosis culture and PCR for tubercle bacilli DNA were negative in all samples. The histopathological data revealed that tuberculous granulomas were present in 4 cases (40%). IHC staining in archived FFPE samples with anti-M. tuberculosis monoclonal antibody revealed positive findings in 4 patients (40%); the same patients in which granulomas were detected by hematoxylin and eosin staining. M. tuberculosis antigens were found to be mostly intracellular, granular in pattern, and primarily located in the CD68+ macrophages of the granulomas.
CONCLUSION: IHC staining with a monoclonal antibody to M. tuberculosis may be an efficient and simple diagnostic tool in addition to classic examination methods for the diagnosis of intestinal TB.
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Hokama A, Kishimoto K, Ihama Y, Kobashigawa C, Nakamoto M, Hirata T, Kinjo N, Higa F, Tateyama M, Kinjo F, Iseki K, Kato S, Fujita J. Endoscopic and radiographic features of gastrointestinal involvement in vasculitis. World J Gastrointest Endosc 2012; 4:50-6. [PMID: 22442741 PMCID: PMC3309893 DOI: 10.4253/wjge.v4.i3.50] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2011] [Revised: 11/04/2011] [Accepted: 03/01/2012] [Indexed: 02/05/2023] Open
Abstract
Vasculitis is an inflammation of vessel walls, followed by alteration of the blood flow and damage to the dependent organ. Vasculitis can cause local or diffuse pathologic changes in the gastrointestinal (GI) tract. The variety of GI lesions includes ulcer, submucosal edema, hemorrhage, paralytic ileus, mesenteric ischemia, bowel obstruction, and life-threatening perforation.The endoscopic and radiographic features of GI involvement in vasculitisare reviewed with the emphasis on small-vessel vasculitis by presenting our typical cases, including Churg-Strauss syndrome, Henoch-Schönlein purpura, systemic lupus erythematosus, and Behçet’s disease. Important endoscopic features are ischemic enterocolitis and ulcer. Characteristic computed tomographic findings include bowel wall thickening with the target sign and engorgement of mesenteric vessels with comb sign. Knowledge of endoscopic and radiographic GI manifestations can help make an early diagnosis and establish treatment strategy.
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Affiliation(s)
- Akira Hokama
- Akira Hokama, Kazuto Kishimoto, Yasushi Ihama, Tetsuo Hirata, Futoshi Higa, Masao Tateyama, Jiro Fujita, Department of Infectious, Respiratory and Digestive Medicine, Faculty of Medicine, University of the Ryukyus, Okinawa 903-0125, Japan
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Hokama A, Kishimoto K, Nakamoto M, Kobashigawa C, Hirata T, Kinjo N, Kinjo F, Kato S, Fujita J. Endoscopic and histopathological features of gastrointestinal amyloidosis. World J Gastrointest Endosc 2011; 3:157-61. [PMID: 21954412 PMCID: PMC3180620 DOI: 10.4253/wjge.v3.i8.157] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2011] [Revised: 07/18/2011] [Accepted: 08/06/2011] [Indexed: 02/05/2023] Open
Abstract
Amyloidosis is a rare disorder, characterized by the extracellular deposition of an abnormal fibrillar protein, which disrupts tissue structure and function. Amyloidosis can be acquired or hereditary, and systemic or localized to a single organ, such as the gastrointestinal (GI) tract. Clinical manifestations may vary from asymptomatic to fatal forms. Primary amyloidosis (monoclonal immunoglobulin light chains, AL) is the most common form of amyloidosis. AL amyloidosis has been associated with plasma cell dyscrasias, such as, multiple myeloma. Secondary amyloidosis is caused by the deposition of fragments of the circulating acute-phase reactant, serum amyloid A protein (SAA). Common causes of AA amyloidosis are chronic inflammatory disorders. Although GI symptoms are usually nonspecific, histopathological patterns of amyloid deposition are associated with clinical and endoscopic features. Amyloid deposition in the muscularis mucosae, submucosa, and muscularis propria has been dominant in AL amyloidosis, leading to polypoid protrusions and thickening of the valvulae conniventes, whereas granular amyloid deposition mainly in the propria mucosae has been related to AA amyloidosis, resulting in the fine granular appearance, mucosal friability, and erosions. As a result, AL amyloidosis usually presents with constipation, mechanical obstruction, or chronic intestinal pseudo-obstruction while AA amyloidosis presents with diarrhea and malabsorption Amyloidotic GI symptoms are mostly refractory and have a negative impact on quality of life and survival. Diagnosing GI amyloidosis requires high suspicion of evaluating endoscopists. Because of the absence of specific treatments for reducing the abundance of the amyloidogenic precursor protein, we should be aware of certain associations between patterns of amyloid deposition and clinical and endoscopic features.
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Affiliation(s)
- Akira Hokama
- Akira Hokama, Kazuto Kishimoto, Tetsuo Hirata, Jiro Fujita, Department of Infectious, Respiratory, and Digestive Medicine, Faculty of Medicine, University of the Ryukyus, Okinawa 903-0125, Japan
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Hokama A, Yamamoto YI, Taira K, Nakamura M, Kobashigawa C, Nakamoto M, Hirata T, Kinjo N, Kinjo F, Takahashi K, Fujita J. Esophagitis dissecans superficialis and autoimmune bullous dermatoses: A review. World J Gastrointest Endosc 2010; 2:252-6. [PMID: 21160615 PMCID: PMC2999143 DOI: 10.4253/wjge.v2.i7.252] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2010] [Revised: 06/23/2010] [Accepted: 06/30/2010] [Indexed: 02/05/2023] Open
Abstract
Esophagitis dissecans superficialis (EDS) is a rare and severe endoscopic finding characterized by sloughing of large fragments of esophageal mucosal lining. Although EDS has been reported in association with serious illnesses and certain medications, the pathophysiological association of autoimmune bullous dermatoses with EDS has gained remarkable attention. Among these dermatoses, pemphigus vulgaris and pemphigoid frequently present with various types of esophageal involvement including EDS. We review the pathophysiology and clinical features of this involvement with the presentation of our experiences. The importance of endoscopic evaluation of this entity is discussed.
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Affiliation(s)
- Akira Hokama
- Akira Hokama, Tetsuo Hirata, Jiro Fujita, Department of Infectious, Respiratory and Digestive Medicine, Faculty of Medicine, University of the Ryukyus, Okinawa 903-0125, Japan
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Hokama A, Nakamura M, Kobashigawa C, Chinen H, Kishimoto K, Nakamoto M, Hirata T, Kinjo N, Kinjo F, Samura H, Nishimaki T, Fujita J. Education and imaging. Gastrointestinal: Signs of pneumoperitoneum. J Gastroenterol Hepatol 2009; 24:497. [PMID: 19335789 DOI: 10.1111/j.1440-1746.2009.05835.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [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: 12/09/2022]
Affiliation(s)
- A Hokama
- First Department of Internal Medicine, University of the Ryukyus, Okinawa, Japan
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Hokama A, Kishimoto K, Nakamoto M, Kinjo N, Kinjo F, Fujita J. An unusual cause of abdominal fullness in a patient with Raynaud's phenomenon. Mixed connective tissue disease. Gut 2008; 57:733, 820. [PMID: 18477675 DOI: 10.1136/gut.2007.124701] [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: 12/08/2022]
Affiliation(s)
- A Hokama
- First Department of Internal Medicine, University of the Ryukyus, 207 Uehara, Nishihara, Okinawa 903-0215, Japan.
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Kishimoto K, Hokama A, Hirata T, Ihama Y, Nakamoto M, Kinjo N, Kinjo F, Fujita J. Endoscopic and histopathological study on the duodenum of Strongyloides stercoralis hyperinfection. World J Gastroenterol 2008; 14:1768-73. [PMID: 18350608 PMCID: PMC2695917 DOI: 10.3748/wjg.14.1768] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate endoscopic and histopathological findings in the duodenum of patients with Strongyloides stercoralis (S. stercoralis) hyperinfection.
METHODS: Over a period of 23 years (1984-2006), we investigated 25 patients with S. stercoralis hyperinfection who had had an esophagogastroduodenoscopy before undergoing treatment for strongyloidiasis. The clinical and endoscopic findings were analyzed retrospectively.
RESULTS: Twenty-four (96%) of the patients investigated were under immunocompromised condition which was mainly due to a human T lymphotropic virus type 1 (HTLV-1) infection. The abnormal endoscopic findings, mainly edematous mucosa, white villi and erythematous mucosa, were observed in 23 (92%) patients. The degree of duodenitis including villous atrophy/destruction and inflammatory cell infiltration corresponded to the severity of the endoscopic findings. The histopathologic yield for identifying larvae was 71.4% by duodenal biopsy. The endoscopic findings of duodenitis were more severe in patients whose biopsies were positive for larvae than those whose biopsies were negative (Endoscopic severity score: 4.86 ± 2.47 vs 2.71 ± 1.38, P < 0.05).
CONCLUSION: Our study clearly demonstrates that, in addition to stool analysis, endoscopic observation and biopsies are very important. We also emphasize that S. stercoralis and HTLV-1 infections should be ruled out before immunosuppressive therapy is administered in endemic regions.
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Hirata T, Nakamoto M, Nakamura M, Kinjo N, Hokama A, Kinjo F, Fujita J. Low prevalence of human T cell lymphotropic virus type 1 infection in patients with gastric cancer. J Gastroenterol Hepatol 2007; 22:2238-41. [PMID: 18031387 DOI: 10.1111/j.1440-1746.2006.04740.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [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: 12/29/2022]
Abstract
BACKGROUND AND AIM There have been few studies on the association between human T cell lymphotropic virus type 1 (HTLV-1) infection and cancer risk. It is still controversial whether or not HTLV-1 infection affects the incidence of several cancers. With this background, we aimed to evaluate the relationship between HTLV-1 infection and the occurrence of several types of cancers. METHODS Subjects were 699 patients with cancer aged 50 years and older diagnosed between 1991 and 2004 at the Department of Medicine and Therapeutics, Ryukyu University Hospital, Okinawa, Japan, and 1365 control patients without cancer. The association between HTLV-1 infection and cancer (biliary tract, pancreatic, esophageal, gastric, colorectal, liver, and lung cancers) was analyzed by logistic regression analysis adjusted for age and sex. RESULTS The infection rate of HTLV-1 in patients with gastric cancer was significantly lower than in controls (P = 0.01, adjusted odds ratio 0.46). The infection rate of HTLV-1 was not associated with increased or decreased risk of cancers other than gastric cancer. CONCLUSION Our study indicated that the prevalence of HTLV-1 infection in patients with gastric cancer appears to be significantly lower than that in control patients.
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Affiliation(s)
- Tetsuo Hirata
- Division of Control and Prevention of Infectious Diseases, Department of Medicine and Therapeutics, Faculty of Medicine, University of the Ryukyus, Nishihara, Okinawa, Japan
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Kakeji Y, Konishi K, Ieiri S, Yasunaga T, Nakamoto M, Tanoue K, Baba H, Maehara Y, Hashizume M. Robotic laparoscopic distal gastrectomy: a comparison of the da Vinci and Zeus systems. Int J Med Robot 2007; 2:299-304. [PMID: 17520647 DOI: 10.1002/rcs.104] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [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: 12/24/2022]
Abstract
BACKGROUND The robotic surgical systems working on a master-slave principle have been developed and used in the worldwide in cardiac, urologic, and general surgery. METHODS The two robotic systems, the da Vinci and the Zeus Robotic Surgical System (Intuitive Surgical, Calif., USA), were compared with the aim of evaluating operative feasibility and technical efficacy in distal gastrectomy. RESULTS During laparoscopic gastrectomy, the da Vinci System (n = 2) had a shorter total operative time (445 versus 656 minutes; p = 0.09) and less blood loss (65 versus 277 mL; p = 0.08) compared with the Zeus System (n = 3). The articulated instruments of both systems were useful in lymph node dissection, isolation of vessels in fat tissue, ligation of vessels, and intraabdominal anastomosis of the gastrointestinal tract. Robotic laparoscopic procedures can be performed effectively using either the da Vinci or Zeus System. CONCLUSION In this limited study, the robotic instruments, especially those of da Vinci system, made it easier to complete tissue dissection including lymph nodes, complicated endoscopic anastomoses, and ligatures in a closed cavity.
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Affiliation(s)
- Y Kakeji
- Department of Surgery and Science, Kyushu University, Higashi-ku, Fukuoka, Japan
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Matsumoto S, Iwakawa R, Takahashi K, Kohno T, Nakanishi Y, Matsuno Y, Suzuki K, Nakamoto M, Shimizu E, Minna JD, Yokota J. Prevalence and specificity of LKB1 genetic alterations in lung cancers. Oncogene 2007; 26:5911-8. [PMID: 17384680 PMCID: PMC3457639 DOI: 10.1038/sj.onc.1210418] [Citation(s) in RCA: 211] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Germline LKB1 mutations cause Peutz-Jeghers syndrome, a hereditary disorder that predisposes to gastrointestinal hamartomatous polyposis and several types of malignant tumors. Somatic LKB1 alterations are rare in sporadic cancers, however, a few reports showed the presence of somatic alterations in a considerable fraction of lung cancers. To determine the prevalence and the specificity of LKB1 alterations in lung cancers, we examined a large number of lung cancer cell lines and lung adenocarcinoma (AdC) specimens for the alterations. LKB1 genetic alterations were frequently detected in the cell lines (21/70, 30%), especially in non-small cell lung cancers (NSCLCs) (20/51, 39%), and were significantly more frequent in cell lines with KRAS mutations. Point mutations were detected only in AdCs and large cell carcinomas, whereas homozygous deletions were detected in all histological types of lung cancer. Among lung AdC specimens, LKB1 mutations were found in seven (8%) of 91 male smokers but in none of 64 females and/or nonsmokers, and were significantly more frequent in poorly differentiated tumors. The difference in the frequency of LKB1 alterations between cell lines and tumor specimens was likely to be owing to masking of deletions by the contamination of noncancerous cells in the tumor specimens. These results indicate that somatic LKB1 genetic alterations preferentially occur in a subset of poorly differentiated lung AdCs that appear to correlate with smoking males.
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Affiliation(s)
- S Matsumoto
- Biology Division, National Cancer Center Research Institute, Tokyo, Japan
- Division of Medical Oncology and Molecular Respirology, Faculty of Medicine, Tottori University, Tottori, Japan
| | - R Iwakawa
- Biology Division, National Cancer Center Research Institute, Tokyo, Japan
| | - K Takahashi
- Biology Division, National Cancer Center Research Institute, Tokyo, Japan
| | - T Kohno
- Biology Division, National Cancer Center Research Institute, Tokyo, Japan
| | - Y Nakanishi
- Pathology Division, National Cancer Center Research Institute, Tokyo, Japan
| | - Y Matsuno
- Diagnostic Pathology Division, National Cancer Center Hospital, Tokyo, Japan
| | - K Suzuki
- Thoracic Surgery Division, National Cancer Center Hospital, Tokyo, Japan
| | - M Nakamoto
- Biology Division, National Cancer Center Research Institute, Tokyo, Japan
- Division of Medical Oncology and Molecular Respirology, Faculty of Medicine, Tottori University, Tottori, Japan
| | - E Shimizu
- Division of Medical Oncology and Molecular Respirology, Faculty of Medicine, Tottori University, Tottori, Japan
| | - JD Minna
- Hamon Center for Therapeutic Oncology Research, University of Texas Southwestern Medical Cencter, Dallas, TX, USA
| | - J Yokota
- Biology Division, National Cancer Center Research Institute, Tokyo, Japan
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Watanabe T, Chinen T, Nakachi N, Nakamoto M, Uchima N, Hirata T, Hokama A, Kinjo N, Kinjo F, Fujita J. [Recurrent esophageal cancer with complete response to TS-1 chemotherapy]. Gan To Kagaku Ryoho 2007; 34:419-22. [PMID: 17353634] [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: 05/14/2023]
Abstract
An 80-year-old man was admitted to our hospital for treatment of recurrent esophageal cancer in December, 2004. He was diagnosed as having esophageal cancer of stage IVa (T2N4M0) in October, 2002, and he received chemoradiotherapy (nedaplatin (CDGP)/5-fluorouracil (5-FU) total 6 course+60 Gy). Afterwards, lymph nodes recurred, and two courses of CDGP/vindesine were given. Then, the primary lesion showed a complete response (CR), and lymph nodes a partial response (PR). In December, 2004, paraesophageal lymph nodes were enlarged to the size of 7 cm. On admission, because of renal disturbance and dementia with advanced age, we chose chemotherapy with TS-1 (100 mg/body/day, three weeks of administration, then two weeks of withdrawal). He had adverse effects of hematotoxicity of grade 3, and non-hematotoxicity of grade 1. He received 6 courses of this regimen and eventually showed CR. Serum SCC was decreased from 4.7 ng/mL to 0.9 ng/mL. At present,the lesions have not recurred during the follow-up for 18 months.
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Affiliation(s)
- Takako Watanabe
- The First Dept. of Internal Medicine, University of the Ryukyus
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35
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Affiliation(s)
- A Hokama
- First Department of Internal Medicine, University of the Ryukyus, Okinawa, Japan.
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36
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Affiliation(s)
- Akira Hokama
- First Department of Internal Medicine, University of the Ryukyus, Okinawa, Japan.
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37
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Nakamura N, Kobayashi K, Nakamoto M, Kohno T, Sasaki H, Matsuno Y, Yokota J. Identification of tumor markers and differentiation markers for molecular diagnosis of lung adenocarcinoma. Oncogene 2006; 25:4245-55. [PMID: 16491115 DOI: 10.1038/sj.onc.1209442] [Citation(s) in RCA: 22] [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
To identify tumor markers and differentiation markers for lung adenocarcinoma (AdC), we analysed expression profiles of 14,500 genes against three cases of type II alveolar epithelial cells, bronchiolar epithelial cells, and bronchial epithelial cells, respectively, and 10 cases of AdC cells isolated by laser capture microdissection. Hierarchical clustering analysis indicated that AdC cells and noncancerous lung epithelial cells are significantly different in their expression profiles, and that different sets of differentiation markers are expressed among alveolar, bronchiolar and bronchial epithelial cells. Nine genes were identified as being highly expressed in AdC cells, but not expressed in noncancerous lung epithelial cells. Sixteen genes were identified as differentiation markers for lung epithelial cells. Real-time RT-PCR analysis of 45 lung AdC cases further revealed that expression of four tumor markers in AdC cells was significantly higher than that in noncancerous lung cells and that expression of ten differentiation markers was retained in a considerable fraction of lung AdC cases. Five tumor markers and seven differentiation markers were not expressed in peripheral blood cells. Similarities and differences in expression profiles between normal epithelial cells from different lung respiratory compartments and AdC cells demonstrated in this study will be informative for the molecular diagnosis of lung AdC.
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Affiliation(s)
- N Nakamura
- Biology Division, National Cancer Center Research Institute, Tokyo, Japan
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38
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Affiliation(s)
- A Hokama
- First Department of Internal Medicine, University of the Ryukyus, 207 Uehara, Nishihara, Okinawa 903-0215, Japan.
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Shimizu T, Nakama M, Uema E, Nakachi N, Nakamoto M, Oomijya H, Uchima N, Hirata T, Hokama A, Kinjo N, Kinjo F, Shiraishi M, Nishimaki T. [A case report of upper gastrointestinal bleeding from hemorrhagic pancreatic pseudocyst by penetration to the stomach]. Nihon Shokakibyo Gakkai Zasshi 2005; 102:729-35. [PMID: 15981632] [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: 05/03/2023]
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Sekiguchi A, Matsuo T, Tanaka M, Watanabe H, Nakamoto M. Tetrasilyl-substituted cyclobutadiene dianion dilithium salt: synthesis and structure. Russ Chem Bull 2004. [DOI: 10.1023/b:rucb.0000041308.25889.77] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [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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42
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Oshiro A, Nagasaki A, Nakachi A, Uchima N, Hasegawa H, Nakazato T, Nakamoto M, Kinjo N, Kinjo F, Taira N, Masuda M, Takasu N. [A case of primary malignant lymphoma of the duodenum successfully treated with dose escalating chemotherapy]. Gan To Kagaku Ryoho 2003; 30:1169-73. [PMID: 12938276] [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: 03/04/2023]
Abstract
A 65-year-old woman with diabetes mellitus was hospitalized for heart failure and anemia in August 2001, and recovered with conservative treatment. An endoscopic examination revealed an ulcerative mass located in the duodenal bulb to the 2nd portion. Abdominal CT scan demonstrated tumor involvement in the pancreas head. The diagnosis of a diffuse large B-cell lymphoma, clinical stage IIE, was made by endoscopic biopsy. Although surgical resection of the localized intestinal tumor would have been a common choice for initial treatment, polychemotherapy was selected; the patient had diabetes mellitus and preferred polychemotherapy to surgical operation. Because of bulky intestinal mass, transmural disease and sensitive histological type, standard-dose chemotherapy was considered to include a high risk of intestinal perforation. We performed dose-escalating chemotherapy: A half dose of THP-COP (pirarubicin, cyclophosphamide, vincristine) was given at the start in October 2001, 60% THP-COP as the next cycle, 80% THP-COP as the 3rd cycle and thereafter. Without serious complications of the intestine, she received a total of 6 cycles of chemotherapy and subsequent involved field radiation. There has been no evidence of recurrence of disease 14 months from the start of chemotherapy. When conditions make surgical treatment difficult, dose-escalating chemotherapy in a treatment cycle may be considered as an alternative.
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Affiliation(s)
- Aya Oshiro
- 2nd Dept. of Internal Medicine, Faculty of Medicine, University of the Ryukyus
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Kishimoto K, Kinjo F, Hokama A, Uchima N, Miyazato S, Nakamoto M, Tomimori K, Hirata T, Kinjo N, Nakayama T, Nakayoshi T, Saito A. [A case of angiosarcoma metastatic to the small intestine]. Nihon Shokakibyo Gakkai Zasshi 2003; 100:868-72. [PMID: 12884764] [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: 03/03/2023]
Affiliation(s)
- Kazuto Kishimoto
- First Department of Internal Medicine, University of the Ryukyus
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Kishimoto K, Hokama A, Kinjo F, Uchima N, Miyazato S, Nakamoto M, Tomimori K, Kinjo N, Karimata Y, Saito A. Fatal malignant aortoesophageal fistula. Gastrointest Endosc 2003; 57:562-3. [PMID: 12665770 DOI: 10.1067/mge.2003.170] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Affiliation(s)
- Kazuto Kishimoto
- First Department of Internal Medicine, Department of Endoscopy, University of the Ryukyus, Karimata Clinic, Okinawa, Japan
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45
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Sakai A, Nakayama M, Numata M, Takesawa S, Nakamoto M. Sodium sulfite and N-acetylcysteine: new additives to dialysate for inhibiting formation of glucose degradation products and advanced glycation end-products. Adv Perit Dial 2002; 17:66-70. [PMID: 11510300] [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: 02/21/2023]
Abstract
The present study evaluated the inhibiting effect of various chemicals on the advanced glycation end-product (AGEs) cross-linking caused in protein by glucose degradation products (GDPs). We evaluated a few dozen organic and inorganic chemicals--in addition to previously reported AGE inhibitors, such as thiazolium derivatives and aminoguanidine--for their inhibiting effect. Collagen IV (from human placenta) or human serum albumin (HSA) was incubated with an AGE accelerator and one of the selected chemicals in phosphate buffer solution at 37 degrees C for as long as 14 days. Fluorescence intensity (440 nm) was determined after a given incubation time. Among 36 chemicals tested, 8 new chemicals and 5 previously known AGE inhibitors significantly suppressed the increase in fluorescence intensity seen after incubation of HSA with methylglyoxal. We believe that 6 chemicals may effectively quench GDPs and inhibit AGE cross-link formation, in a manner different from that of aminoguanidine and thiazolium.
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Affiliation(s)
- A Sakai
- Peritoneal Dialysis Research Project, Japan Science and Technology Corporation, c/o Tokyo Metropolitan Industrial Technology Research Institute, 11-1 Fukazawa 2-chome, Setagaya-ku, Tokyo 158-0081, Japan
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Abstract
Mutations of the Kristen ras (K-ras) gene have been implicated in the pathogenesis of human lung cancer, especially adenocarcinoma, and have been proposed to be a prognostic factor. The K-ras mutation in codon 12 is detectable even in cell-free fluids by using the enriched polymerase chain reaction (PCR) technique. On the other hand, based on experimental results, the rho A mutation in codon 14 is also proposed to be oncogenic as observed in the K-ras mutation. Malignant pleural effusion is a common complication of lung cancer. We studied the point mutation of K-ras codon 12 and rho A codon 14 using enriched PCR in specimens of pleural effusion. Forty patients with pleural effusion were enrolled in this study. The causes of pleural effusion were non-small cell lung cancer (18 cases), small cell lung cancer (6 cases), malignant mesothelioma (2 cases), metastatic lung tumor (5 cases), thymoma (1 case), malignant lymphoma (1 case), and pleuritis tuberculosa (7 cases). The K-ras mutation was detected in 4 of 14 cases with adenocarcinoma, 1 of 3 cases with squamous cell carcinoma, 1 of 1 case with large cell carcinoma, and 1 of 5 cases with metastatic lung tumor, respectively. The rho A mutation was not detected in any pleural effusion examined in this study. Our study demonstrates the usefullness of pleural effusion as a clinical specimen for a search of point mutation of oncogenes. The K-ras codon 12 mutation is readily detected in pleural effusion, and the demonstration of this mutation has potentially important implications for the diagnosis of malignant pleural effusion.
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Affiliation(s)
- M Nakamoto
- Third Department of Internal Medicine, Faculty of Medicine, Tottori University, Yonago 683-8504, Japan
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Matsuo S, Nakamoto M, Nishihara G, Yasunaga C, Yanagida T, Matsuo K, Sakemi T. Buerger's disease in a patient with minimal-change nephrotic syndrome. Nephron Clin Pract 2001; 89:357-8. [PMID: 11598405 DOI: 10.1159/000046101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Matsumoto S, Teramoto H, Nakamoto M, Igishi T, Kawasaki Y, Shimizu E. Presence of antibodies against retinoblastoma tumor suppressor protein in patients with lung cancer. Int J Oncol 2001; 19:1035-9. [PMID: 11605006 DOI: 10.3892/ijo.19.5.1035] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Retinoblastoma (RB) protein and antibody against RB protein in sera from 45 lung cancer patients and 30 healthy volunteers were examined using bacterially synthesized glutathione S-transferase (GST) RB fusion protein and immunoblot analysis. RB protein was not detected in sera from any individuals with lung cancer or in any healthy volunteers. Sera from 6 patients, including 4 with non-small cell carcinoma and 2 with small cell carcinoma, reacted to a GST-RB fusion protein but not with a GST protein. Sera from 30 normal volunteers reacted to neither GST-RB fusion protein nor GST protein. The backgrounds such as age, gender, performance status, histology, stage, smoking history, and prior treatment were not significantly different between the patients with and without anti-RB antibodies. This is the first report describing the presence of anti-RB antibody in patients with malignant tumors. Further studies are needed to establish clinical significance for anti-RB antibody.
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Affiliation(s)
- S Matsumoto
- Third Department of Internal Medicine, Faculty of Medicine, Tottori University, Yonago 683-8504, Japan
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Kajiyama K, Yoshimune M, Nakamoto M, Matsukawa S, Kojima S, Akiba K. Highly selective one-pot synthesis of spirophosphoranes exhibiting reversed apicophilicity by oxidation of dianions generated from P-H spirophosphorane. Org Lett 2001; 3:1873-5. [PMID: 11405733 DOI: 10.1021/ol015927y] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[see reaction]. Mild and highly selective one-pot procedures for obtaining phosphoranes that exhibit reversed (O-cis) apicophilicity are described. On the basis of the procedures, O-cis phosphorane bearing an aryl group (R = 2,4,6-tri-i-propylphenyl) could be isolated for the first time; the procedure is also applicable for alkyl derivatives. Particularly effective was the use of I2 as an oxidizing reagent.
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Affiliation(s)
- K Kajiyama
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1Kagamiyama, Higashi-Hiroshima 739-8526, Japan
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Nakamoto H, Imai H, Kawanishi H, Nakamoto M, Minakuchi J, Kumon S, Watanabe S, Shiohira Y, Ishii T, Kawahara T, Suzuki H. Low serum albumin in elderly continuous ambulatory peritoneal dialysis patients is attributable to high permeability of peritoneum. Adv Perit Dial 2001; 17:238-43. [PMID: 11510284] [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: 04/16/2023]
Abstract
Our study was carried out to investigate changes in nutrition and individual peritoneal membrane transport characteristics in elderly patients on continuous ambulatory peritoneal dialysis (CAPD), expressed as the personal dialysis capacity (PDC). We performed 376 PDC tests in 229 non diabetic patients who were undergoing CAPD from May 1995 to May 1999 in a multicenter study in Japan. We divided the patients into three groups: elderly (age > or = 65 years, n = 56), middle-aged (age 50-65 years, n = 150), and young (age < 50, n = 170). No significant differences were seen in duration of CAPD and incidence of peritonitis between the groups. We then compared the peritoneal function calculated by PDC test in the groups. Serum levels of albumin in elderly patients were significantly lower than those in middle-aged and young patients (elderly: 3.2 +/- 0.1; middle-aged: 3.4 +/- 0.1, p = 0.0447 vs elderly; young: 3.4 +/- 0.1, p = 0.0272 vs elderly). Plasma protein loss from the peritoneum in elderly patients was significantly higher than in middle-aged and young patients (elderly: 0.11 +/- 0.01; middle-aged: 0.09 +/- 0.01, p = 0.0136 vs elderly; young: 0.09 +/- 0.01, p = 0.0161 vs elderly). No significant differences in ultrafiltration volume and water permeability were seen between the groups. Peritoneal area in the elderly group was significantly higher than in the middle-aged and young groups. Peritoneal creatinine clearance (CCr) and Kt/V in elderly patients were significantly higher than in middle-aged and young patients. However, no significant difference in protein nitrogen appearance (PNA) or protein catabolic rate (PCR) was seen between the groups. Urea and creatinine generation rates in elderly patients were significantly lower than in the middle-aged and young patients. These data show that elderly patients receiving CAPD are well maintained from the perspective of urea and water metabolism, indicating that CAPD therapy for the elderly is more acceptable than expected. However, caution should be exercised, owing to the lower serum albumin seen in elderly patients.
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Affiliation(s)
- H Nakamoto
- Department of Nephrology, Saitama Medical School, Saitama, Japan
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