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Beppu N, Ito K, Otani M, Imada A, Matsubara T, Song J, Kimura K, Kataoka K, Kuwahara R, Horio Y, Uchino M, Ikeuchi H, Ikeda M. Feasibility of transanal minimally invasive surgery for total pelvic exenteration for advanced primary and recurrent pelvic malignancies. Tech Coloproctol 2023; 27:1367-1375. [PMID: 37878167 DOI: 10.1007/s10151-023-02869-0] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 10/02/2023] [Indexed: 10/26/2023]
Abstract
BACKGROUND The purpose of this study was to clarify the efficacy and safety of transanal minimally invasive surgery (TAMIS) for total pelvic exenteration (TPE) in advanced primary and recurrent pelvic malignancies. METHODS Using a prospectively collected database, we retrospectively analyzed the clinical, surgical, and pathological outcomes of TAMIS for TPE. Surgery was performed between September 2019 and April 2023. The median follow-up period was 22 months (2-45 months). RESULTS Fifteen consecutive patients were included in this analysis M:F = 14:1 and median (range) age was 63 (36-74). Their diagnoses were as follows: primary rectal cancer (n = 5; 33%), recurrent rectal cancer (n = 4; 27%), primary anorectal cancer (n = 5; 33%), and gastrointestinal stromal tumor (n = 1; 7%). Bladder-sparing TPE was selected for two patients (13%). In nine of 15 patients (60%) the anal sphincter could be successfully preserved, five patients (33%) required combined resection of the internal iliac vessels, and two (13%) required rectus muscle flap reconstruction. The median operative time was 723 min (561-1082), and the median intraoperative blood loss was 195 ml (30-1520). The Clavien-Dindo classifications of the postoperative complications were as follows: grade 0-2 (n = 11; 73%); 3a (n = 3; 20%); 3b (n = 1; 7%); and ≥ 4 (n = 0; 0%). No cases of conversion to laparotomy or mortality were observed. The pathological results demonstrated that R0 was achieved in 14 patients (93%). CONCLUSIONS The short-term outcomes of this initial experience proved that this novel approach is feasible for TPE, with low blood loss, acceptable postoperative complications, and a satisfactory R0 resection rate.
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Affiliation(s)
- N Beppu
- Division of Lower Gastrointestinal Surgery, Department of Gastroenterological Surgery, Hyogo Medical University, 1-1 Mukogawa-Tyo, Nishinomiya, Hyogo, 663-8501, Japan.
| | - K Ito
- Division of Lower Gastrointestinal Surgery, Department of Gastroenterological Surgery, Hyogo Medical University, 1-1 Mukogawa-Tyo, Nishinomiya, Hyogo, 663-8501, Japan
| | - M Otani
- Division of Lower Gastrointestinal Surgery, Department of Gastroenterological Surgery, Hyogo Medical University, 1-1 Mukogawa-Tyo, Nishinomiya, Hyogo, 663-8501, Japan
| | - A Imada
- Division of Lower Gastrointestinal Surgery, Department of Gastroenterological Surgery, Hyogo Medical University, 1-1 Mukogawa-Tyo, Nishinomiya, Hyogo, 663-8501, Japan
| | - T Matsubara
- Division of Lower Gastrointestinal Surgery, Department of Gastroenterological Surgery, Hyogo Medical University, 1-1 Mukogawa-Tyo, Nishinomiya, Hyogo, 663-8501, Japan
| | - J Song
- Division of Lower Gastrointestinal Surgery, Department of Gastroenterological Surgery, Hyogo Medical University, 1-1 Mukogawa-Tyo, Nishinomiya, Hyogo, 663-8501, Japan
| | - K Kimura
- Division of Lower Gastrointestinal Surgery, Department of Gastroenterological Surgery, Hyogo Medical University, 1-1 Mukogawa-Tyo, Nishinomiya, Hyogo, 663-8501, Japan
| | - K Kataoka
- Division of Lower Gastrointestinal Surgery, Department of Gastroenterological Surgery, Hyogo Medical University, 1-1 Mukogawa-Tyo, Nishinomiya, Hyogo, 663-8501, Japan
| | - R Kuwahara
- Division of Inflammatory Bowel Disease Surgery, Department of Gastroenterological Surgery, Hyogo Medical University, Nishinomiya, Hyogo, Japan
| | - Y Horio
- Division of Inflammatory Bowel Disease Surgery, Department of Gastroenterological Surgery, Hyogo Medical University, Nishinomiya, Hyogo, Japan
| | - M Uchino
- Division of Inflammatory Bowel Disease Surgery, Department of Gastroenterological Surgery, Hyogo Medical University, Nishinomiya, Hyogo, Japan
| | - H Ikeuchi
- Division of Inflammatory Bowel Disease Surgery, Department of Gastroenterological Surgery, Hyogo Medical University, Nishinomiya, Hyogo, Japan
| | - M Ikeda
- Division of Lower Gastrointestinal Surgery, Department of Gastroenterological Surgery, Hyogo Medical University, 1-1 Mukogawa-Tyo, Nishinomiya, Hyogo, 663-8501, Japan
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Kurisu K, Nohara N, Inada S, Otani M, Noguchi H, Endo Y, Sato Y, Fukudo S, Nakazato M, Yamauchi T, Harada T, Inoue K, Hata T, Takakura S, Sudo N, Iida N, Mizuhara Y, Wada Y, Ando T, Yoshiuchi K. Economic costs for outpatient treatment of eating disorders in Japan. J Eat Disord 2023; 11:136. [PMID: 37580766 PMCID: PMC10426034 DOI: 10.1186/s40337-023-00864-2] [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] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Accepted: 08/08/2023] [Indexed: 08/16/2023] Open
Abstract
BACKGROUND Few studies have examined the economic costs of outpatient care for eating disorders in Japan. This study aimed to clarify the reimbursement for outpatient treatment of eating disorders and compare the costs between the departments of Psychosomatic Medicine and Psychiatry in Japan. METHOD A multicenter, prospective, observational study of patients with an eating disorder was conducted in the Psychosomatic Medicine departments of three centers and the Psychiatry departments of another three centers in Japan. We analyzed medical reimbursement for an outpatient revisit, time of clinical interviews, and the treatment outcome measured by the Eating Disorder Examination Questionnaire (EDE-Q) global scores and body mass index (BMI) at 3 months. Multivariate linear regression models were performed to adjust for covariates. RESULTS This study included 188 patients in the Psychosomatic Medicine departments and 68 in the Psychiatry departments. The average reimbursement cost for an outpatient revisit was 4670 yen. Even after controlling for covariates, the Psychosomatic Medicine departments had lower reimbursement points per minute of interviews than the Psychiatry departments (coefficient = - 23.86; 95% confidence interval = - 32.09 to - 15.63; P < 0.001). In contrast, EDE-Q global scores and BMI at 3 months were not significantly different between these departments. CONCLUSIONS This study clarifies the economic costs of treating outpatients with eating disorders in Japan. The medical reimbursement points per interview minute were lower in Psychosomatic Medicine departments than in Psychiatry departments, while there were no apparent differences in the treatment outcomes. Addressing this issue is necessary to provide an adequate healthcare system for patients with eating disorders in Japan.
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Affiliation(s)
- Ken Kurisu
- Department of Stress Sciences and Psychosomatic Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Nobuhiro Nohara
- Department of Stress Sciences and Psychosomatic Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Shuji Inada
- Department of Stress Sciences and Psychosomatic Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
- Department of Psychosomatic Medicine, Kindai University Hospital, Osaka, Japan
| | - Makoto Otani
- Department of Psychosomatic Medicine, The University of Tokyo Hospital, Tokyo, Japan
| | - Haruko Noguchi
- Faculty of Political Science and Economics, Waseda University, Tokyo, Japan
| | - Yuka Endo
- Department of Psychosomatic Medicine, Tohoku University Hospital, Sendai, Miyagi, Japan
| | - Yasuhiro Sato
- Department of Psychosomatic Medicine, Tohoku University Hospital, Sendai, Miyagi, Japan
| | - Shin Fukudo
- Department of Psychosomatic Medicine, Tohoku University Hospital, Sendai, Miyagi, Japan
- Department of Psychosomatic Medicine, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Michiko Nakazato
- Department of Psychiatry, International University of Health and Welfare, Chiba, Japan
- Department of Psychiatry, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Tsuneo Yamauchi
- Department of Neuropsychiatry, Osaka Metropolitan University Hospital, Osaka, Japan
| | - Tomoko Harada
- Department of Neuropsychiatry, Osaka Metropolitan University Hospital, Osaka, Japan
| | - Koki Inoue
- Department of Neuropsychiatry, Osaka Metropolitan University Hospital, Osaka, Japan
| | - Tomokazu Hata
- Department of Psychosomatic Medicine, Kyushu University Hospital, Fukuoka, Japan
| | - Shu Takakura
- Department of Psychosomatic Medicine, Kyushu University Hospital, Fukuoka, Japan
| | - Nobuyuki Sudo
- Department of Psychosomatic Medicine, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Naoko Iida
- Department of Psychiatry, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Yuki Mizuhara
- Department of Psychiatry, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
- Kyoto Prefectural Support Center of Child Development, Kyoto, Japan
| | | | - Tetsuya Ando
- Department of Psychosomatic Medicine, Narita Hospital, International University of Health and Welfare, Chiba, Japan
| | - Kazuhiro Yoshiuchi
- Department of Stress Sciences and Psychosomatic Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
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Yamazaki T, Miyamoto S, Matsubara T, Yamagata H, Kobo H, Otani M, Abe H, Sumitani M, Shimizu K, Rodin G, Yoshiuchi K. Development of a Japanese Version of the Quality of Life at the End of Life-Cancer Scale. J Pain Symptom Manage 2023; 66:e189-e195. [PMID: 37121525 DOI: 10.1016/j.jpainsymman.2023.04.023] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 04/16/2023] [Accepted: 04/22/2023] [Indexed: 05/02/2023]
Abstract
CONTEXT The Quality of Life at the End of Life-Cancer Scale (QUAL-EC) is a self-reported instrument to assesses the quality of life of patients with cancer near the end of life. OBJECTIVE To test the reliability and validity of the QUAL-EC-J, a Japanese translated version of the QUAL-EC. METHODS A total of 179 Japanese patients with advanced cancer completed the QUAL-EC-J, Patient Health Questionnaire-9, Generalized Anxiety Disorder-7, Rosenberg Self-Esteem Scale, Multidimensional Scale of Perceived Social Support, Functional Assessment of Cancer Therapy-General Scale, and Functional Assessment of Chronic Illness Therapy-Spiritual questionnaires. We performed confirmatory factor analysis of the four structures of the QUAL-EC and exploratory factor analysis of the QUAL-EC-J. Internal consistency was assessed using Cronbach's α coefficient and validity was examined by calculating correlations with relevant scales. RESULTS Confirmatory factor analysis showed an inadequate fit to the original QUAL-EC structure. Exploratory factor analysis revealed a three-factor structure of the QUAL-EC-J, with Cronbach's α values of 0.68-0.88. All subscales were negatively correlated with depression and anxiety. Each subscale was correlated with related measures: "symptom control" with "physical well-being"; "acceptance of disease and life" with "social and family well-being" and "meaning/peace"; and "preparation for end of life" with "emotional well-being" and "meaning/peace." CONCLUSIONS The QUAL-EC-J has a three-factor structure with acceptable reliability and sufficient validity. Differences in the factor structure between the QUAL-EC-J and the QUAL-EC may be due to cultural factors. Study findings suggest that utilization of the QUAL-EC-J could help to improve research and clinical care in advanced cancer in Japan.
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Affiliation(s)
- Tadahiro Yamazaki
- Department of Stress Sciences and Psychosomatic Medicine (T.Y., S.M., M.O., K.Y.), Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Seraki Miyamoto
- Department of Stress Sciences and Psychosomatic Medicine (T.Y., S.M., M.O., K.Y.), Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Toshio Matsubara
- Division of Neuropsychiatry, Department of Neuroscience (T.M.), Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| | - Hiroshi Yamagata
- Department of Anesthesiology (H.Y.), Graduate School of Medicine, Yamaguchi University, Ube, Yamaguchi, Japan; Palliative Care Center (H.Y.), Yamaguchi University Hospital, Yamaguchi, Japan
| | - Hiroshi Kobo
- Department of Psycho-Oncology (H.K., K.S.), Cancer Institute Hospital of the Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Makoto Otani
- Department of Stress Sciences and Psychosomatic Medicine (T.Y., S.M., M.O., K.Y.), Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hiroaki Abe
- Department of Pain and Palliative Medicine (H.A., M.S.), The University of Tokyo Hospital, Tokyo, Japan
| | - Masahiko Sumitani
- Department of Pain and Palliative Medicine (H.A., M.S.), The University of Tokyo Hospital, Tokyo, Japan
| | - Ken Shimizu
- Department of Psycho-Oncology (H.K., K.S.), Cancer Institute Hospital of the Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Gary Rodin
- Department of Supportive Care (G.R.), Princess Margaret Cancer Centre, University of Toronto, Toronto, Ontario, Canada
| | - Kazuhiro Yoshiuchi
- Department of Stress Sciences and Psychosomatic Medicine (T.Y., S.M., M.O., K.Y.), Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
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Oba T, Tomioka S, Sato N, Otani M, Sakurai A, Akiyama Y, Nagata J, Torigoe T, Matsuda S, Hirata K. The effects of hospital volume on short-term outcomes of laparoscopic surgery for rectal cancer: A large-scale analysis of 37,821 cases on a nationwide administrative database. Dig Surg 2023:1. [PMID: 36948158 DOI: 10.1159/000529752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 02/06/2023] [Indexed: 03/24/2023]
Abstract
Introduction Laparoscopic low anterior resection (L-LAR) has become widely accepted for the treatment of rectal cancer. However, little is known about the superiority of L-LAR in a real-world setting (including low-volume hospitals) and the association between the short-term outcomes and hospital volume focusing on L-LAR. Methods This is a retrospective cohort study. A total of 37,821 patients who underwent LAR for rectal cancer were analyzed using the Diagnosis Procedure Combination (DPC) database from January 2014 to December 2017. The short-term surgical outcomes were analyzed using a multilevel analysis. Hospital volumes were divided into quartiles, including low (1-31), middle (32-55), high (56-91) and very-high volume (92-444 resections per 4 years). The effects of hospital volume on the outcomes were investigated. Results The study population included 8,335 patients (22%) who underwent Open-LAR (O-LAR) and 29,486 patients (78%) who underwent L-LAR. The in-hospital mortality and morbidity were in consistent with previous reports. In patients who underwent L-LAR, the in-hospital mortality (0.12% vs 0.41%, OR0.33; p=0.005), the rate of reoperation (3.76% vs 6.48%, OR0.67; p<0.001) and perioperative transfusion rate (3.81% vs 5.90%, OR0.66; p<0.001) were significantly lower in very-high-volume hospitals than in low-volume hospitals. These effects of hospital volume were not observed in O-LAR. Conclusions Our present study demonstrate that high-volume improves outcomes in patients who underwent L-LAR in a real-world setting.
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Kurisu K, Matsuoka M, Sato K, Hattori A, Yamanaka Y, Nohara N, Otani M, Yoshiuchi K. Increased prevalence of eating disorders in Japan since the start of the COVID-19 pandemic. Eat Weight Disord 2022; 27:2251-2255. [PMID: 34855142 PMCID: PMC8638639 DOI: 10.1007/s40519-021-01339-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 11/19/2021] [Indexed: 12/11/2022] Open
Abstract
PURPOSE The study aimed to investigate the effect of the COVID-19 pandemic on the prevalence of eating disorders in Japan. METHODS We retrospectively reviewed the medical records of new patients with eating disorders who visited an outpatient eating disorders clinic of a single university hospital in Tokyo, Japan, from April 2020 to March 2021 (FY2020) and April 2019 to March 2020 (FY2019). We determined whether the onset or course in each patient in FY2020 was associated with the COVID-19 pandemic and classified COVID-19-associated medical histories into the following categories: (1) fatness phobia, (2) acceleration of dieting, (3) family relationships, (4) social factors, and (5) mood change. We performed the Kolmogorov-Smirnov test to compare the cumulative distribution of disease onset by month in FY2020 and FY2019. RESULTS We reviewed the records of 112 and 77 patients with eating disorders in FY2020 and FY2019, respectively. The onset or course of 35 patients (31.3%) in FY2020 was associated with the COVID-19 pandemic. We classified 14 patients to fatness phobia category, 11 to acceleration of dieting, 4 to family relationships, 2 to social factors, and 4 to mood change. No COVID-19-associated cases were associated with fear of contracting the disease. The cumulative distribution of disease onset differed significantly in FY2020 and FY2019 (D = 0.248; P = 0.007). CONCLUSION This chart review suggests that the COVID-19 pandemic may increase the prevalence of eating disorders. LEVEL OF EVIDENCE III, cohort study.
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Affiliation(s)
- Ken Kurisu
- Department of Stress Sciences and Psychosomatic Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Mikiko Matsuoka
- Department of Stress Sciences and Psychosomatic Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Kaoruko Sato
- Department of Stress Sciences and Psychosomatic Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Asako Hattori
- Department of Stress Sciences and Psychosomatic Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Yukari Yamanaka
- Department of Stress Sciences and Psychosomatic Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Nobuhiro Nohara
- Department of Stress Sciences and Psychosomatic Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Makoto Otani
- Department of Stress Sciences and Psychosomatic Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Kazuhiro Yoshiuchi
- Department of Stress Sciences and Psychosomatic Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.
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Tsuruha T, Otani M, Takano Y. Experimental study on sound absorption of hollow glass beads with inner closed cavities under low-frequency vertical vibration. JASA Express Lett 2022; 2:024003. [PMID: 36154258 DOI: 10.1121/10.0009531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Normal incidence sound absorption coefficients α of hollow glass beads were measured under a sinusoidal vertical vibration of 10 Hz. It was found that α depends on the vibrational displacement amplitude. As the displacement amplitude increased, the frequency width of the peak extended toward low frequencies. In addition, different evolutions of α were observed for the time periods during which the displacement of the sinusoidal vibration was positive or negative. It seems that the variation in packing state, which is caused by the inertial forces due to vibration, causes the different evolutions of α.
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Affiliation(s)
- Takumasa Tsuruha
- Takenaka Research and Development Institute, 1-5-1, Otsuka, Inzai, Chiba 270-1395, Japan
| | - Makoto Otani
- Graduate School of Engineering, Kyoto University, Kyoto-daigaku Katsura, Nishikyo, Kyoto, 615-8540, Japan , ,
| | - Yasushi Takano
- Graduate School of Engineering, Kyoto University, Kyoto-daigaku Katsura, Nishikyo, Kyoto, 615-8540, Japan , ,
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Otani M, Hasegawa K, Kita K, Horikawa D, Mizukami S, Takeda T, Ohara M, Tani C, Shonaka T, Matsuno N, Sumi Y. Assessment of post-operative changes in body composition after pylorus-preserving gastrectomy for early gastric cancer. Clin Nutr ESPEN 2021. [DOI: 10.1016/j.clnesp.2021.09.480] [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: 10/19/2022]
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Oba T, Yamada T, Matsuda A, Otani M, Matsuda S, Ohta R, Yoshida H, Sato N, Hirata K. Patient backgrounds and short‐term outcomes of complicated appendicitis differ from those of uncomplicated appendicitis. Ann Gastroenterol Surg 2021; 6:273-281. [PMID: 35261953 PMCID: PMC8889856 DOI: 10.1002/ags3.12523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 09/08/2021] [Accepted: 10/15/2021] [Indexed: 11/24/2022] Open
Abstract
Background Appendicitis is classified as either complicated (CA) or uncomplicated (UA). Some authors have shown that the epidemiologic trends of CA and UA may differ. The aim of this study was to clarify differences in backgrounds and surgical outcomes between CA and UA patients. Methods This study was a cohort study. We extracted case data from the Japanese Diagnosis Procedure Combination (DPC) database from January 2014 to December 2017. Patients were classified into three groups, depending on whether they underwent emergency appendectomy for CA (CA group), emergency appendectomy for UA (UA group), or elective appendectomy (EA group). We evaluated patient characteristics and surgical outcomes for each group. Results We included 89,355 adult patients in the study, comprising 29,331 CA, 48,691 UA, and 11,333 EA patients. Old age, larger body mass index, smoking, and medication with antidiabetic drugs, oral corticosteroids, oral antiplatelet drugs, and oral anticoagulant drugs were independent risk factors for CA. The percentage of CA increased with age. In‐hospital mortality (0.15%, 0.02%, and 0.00%) and 30‐d mortality (0.09%, 0.01%, and 0.00%), respectively, of CA patients were significantly higher than those of the UA and EA groups. The duration of postoperative antibiotic administration, duration of fasting, and time before removal of a prophylactic drain were significantly longer in the CA group than in the UA and EA groups. Conclusion Backgrounds and treatment outcomes of CA and UA patients after emergency surgery are entirely different. Thus, the treatment strategy of CA and UA patients should differ accordingly.
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Affiliation(s)
- Takuya Oba
- Department of Surgery 1 School of Medicine University of Occupational and Environmental Health Fukuoka Japan
| | - Takeshi Yamada
- Department of Gastrointestinal and Hepato‐Biliary‐Pancreatic Surgery Nippon Medical School Tokyo Japan
| | - Akihisa Matsuda
- Department of Gastrointestinal and Hepato‐Biliary‐Pancreatic Surgery Nippon Medical School Tokyo Japan
| | - Makoto Otani
- Occupational Health Data Science Centre University of Occupational and Environmental Health Fukuoka Japan
| | - Shinya Matsuda
- Department of Preventive Medicine and Community Health School of Medicine University of Occupational and Environmental Health Fukuoka Japan
| | - Ryo Ohta
- Department of Gastrointestinal and Hepato‐Biliary‐Pancreatic Surgery Nippon Medical School Tokyo Japan
| | - Hiroshi Yoshida
- Department of Gastrointestinal and Hepato‐Biliary‐Pancreatic Surgery Nippon Medical School Tokyo Japan
| | - Norihiro Sato
- Department of Surgery 1 School of Medicine University of Occupational and Environmental Health Fukuoka Japan
| | - Keiji Hirata
- Department of Surgery 1 School of Medicine University of Occupational and Environmental Health Fukuoka Japan
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Matsuda R, Otani M. Binaural-centered mode-matching method for enhanced reproduction accuracy at listener's both ears in sound field reproduction. J Acoust Soc Am 2021; 150:3838. [PMID: 34852595 DOI: 10.1121/10.0007226] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Accepted: 10/25/2021] [Indexed: 06/13/2023]
Abstract
This paper proposes a binaural-centered mode-matching (BCMM) method that performs sound field reproduction with two reproduction points, one at each ear. A sound field reproduced by higher-order Ambisonics converges to the target field around a sweet spot whose size is inversely proportional to the frequency when the truncated order of the spherical harmonic expansion is constant. By contrast, BCMM translates the spherical harmonic coefficients on the basis of the addition theorem to realize two reproduction points at both ear positions. The BCMM method thereby avoids degradation of reproduction due to a smaller sweet spot at higher frequencies, as occurs with the conventional method, and thereby, leads to an accurate reproduction at higher frequencies. A comparison of numerical simulations of the binaural signals obtained when rendering with BCMM and conventional methods shows that, compared with the conventional method, the BCMM method improves the reproduction accuracy.
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Affiliation(s)
- Ryo Matsuda
- Department of Architecture and Architectural Engineering, Graduate School of Engineering, Kyoto University, Kyoto-daigaku-katsura, Nishikyo-ku, Kyoto, 615-8540, Japan
| | - Makoto Otani
- Department of Architecture and Architectural Engineering, Graduate School of Engineering, Kyoto University, Kyoto-daigaku-katsura, Nishikyo-ku, Kyoto, 615-8540, Japan
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Tsuruha T, Otani M, Takano Y. Effect of acoustically-induced elastic softening on sound absorption coefficient of hollow glass beads with inner closed cavities. J Acoust Soc Am 2021; 150:841. [PMID: 34470310 DOI: 10.1121/10.0005812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 07/12/2021] [Indexed: 06/13/2023]
Abstract
This study investigated the effects of sound wave magnitude on the sound absorption characteristics of granular materials. The normal incidence sound absorption coefficients of the hollow glass bead packings were measured with different incident sound pressure levels. The measurement results exhibited spectral peaks of sound absorption coefficients at several frequencies, implying that the first peak was caused by the resonance of the hollow glass beads as a layer. Although the first peak in the sound absorption coefficients did not vary when an incident sound pressure was low, the first peak shifted to a lower frequency when the sound pressure exceeded a certain magnitude. These results indicate that the hollow glass beads are softened at high incident sound pressures. Furthermore, by modelling the velocity-dependent elasticity of the hollow glass beads, the velocity and elasticity in the hollow glass beads were simulated in the direction of the sound propagation. The simulation results indicate that the velocity and elasticity profiles depend on the sound wave magnitude. Finally, the velocities of the hollow glass beads under acoustic excitation were measured by inserting an accelerometer into the beads. The measurement results demonstrated that the velocity profile depends on the sound wave magnitude, which parallels the simulation results.
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Affiliation(s)
- Takumasa Tsuruha
- Takenaka Research and Development Institute, 1-5-1, Otsuka, Inzai, Chiba 270-1395, Japan
| | - Makoto Otani
- Graduate School of Engineering, Kyoto University, Kyoto-daigaku Katsura, Nishikyo, Kyoto, 615-8540, Japan
| | - Yasushi Takano
- Graduate School of Engineering, Kyoto University, Kyoto-daigaku Katsura, Nishikyo, Kyoto, 615-8540, Japan
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Kurisu K, Yamanaka Y, Yamazaki T, Yoneda R, Otani M, Takimoto Y, Yoshiuchi K. A clinical course of a patient with anorexia nervosa receiving surgery for superior mesenteric artery syndrome. J Eat Disord 2021; 9:79. [PMID: 34193279 PMCID: PMC8246657 DOI: 10.1186/s40337-021-00436-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Accepted: 06/21/2021] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND Superior mesenteric artery (SMA) syndrome is a well-known but relatively rare complication of anorexia nervosa. Although several reports have proposed surgery for SMA syndrome associated with anorexia nervosa, these have shown poor outcomes or did not reveal the long-term weight course. Thus, the long-term effectiveness of surgery for SMA syndrome in such cases remains unclear. This case report describes a patient with anorexia nervosa who underwent surgery for SMA syndrome. CASE PRESENTATION An 18-year-old woman presented with anorexia nervosa when she was 16 years old. She also presented with SMA syndrome, which seemed to be caused by weight loss due to the eating disorder. Nutrition therapy initially improved her body weight, but she ceased treatment. She reported that symptoms related to SMA syndrome had led to her weight loss and desired to undergo surgery. Laparoscopic duodenojejunostomy was performed, but her body weight did not improve after the surgery. The patient eventually received conservative nutritional treatment along with psychological approaches, which led to an improvement in her body weight. CONCLUSIONS The case implies that surgery for SMA syndrome in patients with anorexia nervosa is ineffective for long-term weight recovery and that conservative treatment can sufficiently improve body weight; this is consistent with the lack of evidence on the topic and reports on potential complications of surgery. Due to difficulties in assessing psychological status, consultation with specialists on eating disorders is necessary for treating patients with severely low body weight.
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Affiliation(s)
- Ken Kurisu
- Department of Stress Sciences and Psychosomatic Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Yukari Yamanaka
- Department of Stress Sciences and Psychosomatic Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Tadahiro Yamazaki
- Department of Stress Sciences and Psychosomatic Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Ryo Yoneda
- Department of Stress Sciences and Psychosomatic Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Makoto Otani
- Department of Stress Sciences and Psychosomatic Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Yoshiyuki Takimoto
- Department of Stress Sciences and Psychosomatic Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Kazuhiro Yoshiuchi
- Department of Stress Sciences and Psychosomatic Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.
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12
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Otani M, Hiraide M, Horie T, Mitsui T, Yoshida T, Takamiya S, Sakuta R, Usami M, Komaki G, Yoshiuchi K. Psychometric properties of the Eating Disorder Examination-Questionnaire and psychopathology in Japanese patients with eating disorders. Int J Eat Disord 2021; 54:203-211. [PMID: 33368571 DOI: 10.1002/eat.23452] [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: 07/30/2020] [Revised: 12/08/2020] [Accepted: 12/10/2020] [Indexed: 11/08/2022]
Abstract
OBJECTIVE The Eating Disorder Examination-Questionnaire (EDE-Q) is one of the most widely used tools to assess the core psychopathology of eating disorders (ED). However, recent empirical findings did not support the original four-factor structure. The aims of the present study were to investigate the factor structure of the EDE-Q in Japanese ED patients, to test the reliability and convergent validity of the EDE-Q, to examine group differences between various ED groups and healthy participants, and to explore the main behavioral features of Japanese ED patients using the newly developed Japanese version of EDE-Q. METHOD A total of 148 ED patients and 469 healthy participants completed the EDE-Q, Eating Attitudes Test-26 (EAT-26), and Eating Disorder Inventory-2 (EDI-2). The factor structure, reliability, and validity of the EDE-Q were assessed in ED patients. Group differences were assessed using the new Japanese version of the EDE-Q (EDE-Q-J). RESULTS The EDE-Q-J had three factors. Cronbach's alphas ranged from 0.83 to 0.93. Total score and subscale scores of "Dieting" and "Bulimia and Food Preoccupation" of EAT-26 and of "Drive for Thinness," "Body Dissatisfaction," and "Bulimia" of EDI-2 correlated with the global score and three subscale scores of the EDE-Q-J. DISCUSSION For Japanese female ED patients, the EDE-Q-J had three subscales that were not consistent with the original subscales, but were interpretable. It demonstrated sufficient reliability and validity. Japanese female patients with restricting-type anorexia nervosa (AN-R) displayed less dissatisfaction with shape and weight than healthy participants. AN-R patients in Japan might present with a non-fat-phobic symptom profile.
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Affiliation(s)
- Makoto Otani
- Department of Psychosomatic Medicine, The University of Tokyo Hospital, Tokyo, Japan
| | - Maiko Hiraide
- Department of Psychosomatic Medicine, The University of Tokyo Hospital, Tokyo, Japan
| | - Takeshi Horie
- Department of Psychosomatic Medicine, The University of Tokyo Hospital, Tokyo, Japan
| | - Tomoyo Mitsui
- Department of Psychology, Faculty of Human Development and Education, Kobe Shinwa Women's University, Kobe, Hyogo, Japan
| | - Toshiyuki Yoshida
- School of Medical Sciences at Fukuoka, International University of Health and Welfare, Fukuoka, Japan
| | - Shizuo Takamiya
- Department of Psychiatry, Kobe City Nishi-Kobe Medical Center, Kobe, Hyogo, Japan.,Takamiya Psychiatry Clinic, Akashi, Hyogo, Japan
| | - Ryoichi Sakuta
- Child Development and Psychosomatic Medicine Center, Dokkyo Medical University Saitama Medical Center, Saitama, Japan
| | - Masahide Usami
- Department of Child and Adolescent Psychiatry, Kohnodai Hospital, National Center for Global Health and Medicine, Chiba, Japan
| | - Gen Komaki
- Faculty of Medical Science, Fukuoka International University of Health and Welfare, Fukuoka, Japan
| | - Kazuhiro Yoshiuchi
- Department of Psychosomatic Medicine, The University of Tokyo Hospital, Tokyo, Japan.,Department of Stress Sciences and Psychosomatic Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
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13
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Okawara M, Nagata T, Nagata M, Otani M, Mori K, Fujino Y. Association between the course of hypnotics treatment for insomnia and work functioning impairment in Japanese workers. PLoS One 2020; 15:e0243635. [PMID: 33301520 PMCID: PMC7728191 DOI: 10.1371/journal.pone.0243635] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 11/24/2020] [Indexed: 11/24/2022] Open
Abstract
Study objectives This cross-sectional study analyzed the effect of treatment with hypnotics for sleep disorders, particularly insomnia, on daytime work functioning by phase of treatment in Japanese workers. Methods Subjects were respondents (n = 36,375) to a questionnaire survey conducted in 2015 to assess work functioning impairment in 15 companies in Japan. The questionnaire results were analyzed together with the respondents’ healthcare data extracted from public health insurance claims. Work functioning impairment was measured using the Work Functioning Impairment Scale (WFun). The status of treatment for insomnia was determined using data on diseases and prescribed drugs extracted from health insurance claims from the past 16 months. The odds ratio of severe work functioning impairment according to on-treatment duration and off-treatment duration was estimated using logistic regression analysis. Results The risk of severe work functioning impairment was significantly higher in subjects with insomnia who were being treated with hypnotics for 1 month or longer compared to non-insomnia subjects. This increased risk tended to be reduced with longer on-treatment duration. For subjects who had previously received hypnotics treatment for insomnia, the risk of severe work functioning impairment was significantly increased in all subgroups stratified by time from discontinuation of the prescription. This increased risk tended to be reduced with longer off-treatment duration. Conclusions Workers who are or were receiving hypnotics to treat insomnia may have a higher risk of daytime functioning impairment. Those with protracted insomnia require careful assessment of the risks and benefits of prescription hypnotics.
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Affiliation(s)
- Makoto Okawara
- Department of Environmental Epidemiology, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Kitakyushu, Fukuoka, Japan
- * E-mail:
| | - Tomohisa Nagata
- Department of Occupational Health Practice and Management, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Kitakyushu, Fukuoka, Japan
| | - Masako Nagata
- Department of Occupational Health Practice and Management, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Kitakyushu, Fukuoka, Japan
| | - Makoto Otani
- Data Science Center for Occupational Health, University of Occupational and Environmental Health, Kitakyushu, Fukuoka, Japan
| | - Koji Mori
- Department of Occupational Health Practice and Management, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Kitakyushu, Fukuoka, Japan
| | - Yoshihisa Fujino
- Department of Environmental Epidemiology, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Kitakyushu, Fukuoka, Japan
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14
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Usami K, Watabe H, Otani M, Maruta S, Hiraya D, Hoshi T, Sato A, Ieda M. Impact of coronary plaque characteristics on periprocedural myocardial injury after elective percutaneous coronary intervention -MDCT and CMR analysis-. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Percutaneous coronary intervention (PCI) is often complicated by periprocedural myocardial injury (PMI) manifested by elevated cardiac biomarkers. The occurrence of PMI has been shown to be associated with worse clinical outcome over short- and long-term.
Purpose
We performed multidetector computed tomography (MDCT) and cardiac magnetic resonance imaging (CMR) to evaluate the relationship between culprit plaque characteristics and PMI.
Methods
A total of 90 patients who underwent elective PCI were underwent CMR and multidetector coronary tomography before PCI. The high intensity plaque (HIP) on CMR was defined as a coronary plaque to myocardium signal intensity ratio (PMR) of >1.4. The plaque characteristics and the presence of napkin-ring sign (NRS) were analyzed on MDCT. PMI was defined as an increase in cardiac Troponin T levels to more than 5 times the upper limit of normal at 24 h after PCI. Patients were divided into 2 groups according to the presence (Group I, n=26) or absence (Group II, n=64) of PMI.
Results
Spotty calcification, positive remodeling, low attenuation plaque and NRS on MDCT were significantly more observed in Group I than in Group II. HIP on CMR was significantly more observed in Group I than in Group II. In the multivariable logistic regression analysis, the presence of NRS and HIP were significantly independent predictors of PMI (odds ratio (OR) 4.82, 95% confidence interval 1.13–20.60, P=0.034 and OR 3.66, 95% CI 1.09–12.30, P=0.036, respectively). Moreover, for prediction of PMI, NRS and HIP showed a high positive predictive value of 81%, and their absence showed a high negative predictive value of 91%.
Conclusions
MDCT and CMR may play an important role in detecting which lesions are high risks for myocardial necrosis after PCI in elective coronary stenting.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- K Usami
- Tsukuba University Hospital, Tsukuba, Japan
| | - H Watabe
- Tsukuba University Hospital, Tsukuba, Japan
| | - M Otani
- Tsukuba University Hospital, Tsukuba, Japan
| | - S Maruta
- Tsukuba University Hospital, Tsukuba, Japan
| | - D Hiraya
- Tsukuba University Hospital, Tsukuba, Japan
| | - T Hoshi
- Tsukuba University Hospital, Tsukuba, Japan
| | - A Sato
- Tsukuba University Hospital, Tsukuba, Japan
| | - M Ieda
- Tsukuba University Hospital, Tsukuba, Japan
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15
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Yoneda R, Otani M, Hiraide M, Horie T, Mitsui T, Yoshida T, Komaki G, Yoshiuchi K. Reliability and validity of the Japanese translation of the Eating Disorders Quality of Life (ED-QOL) scale for Japanese healthy female university undergraduate students and patients with eating disorders. Biopsychosoc Med 2020; 14:16. [PMID: 32765642 PMCID: PMC7395422 DOI: 10.1186/s13030-020-00189-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 07/24/2020] [Indexed: 11/11/2022] Open
Abstract
Background The Eating Disorder Quality of Life (ED-QOL) scale is a 25-item self-report measure that assesses health-related quality of life (HRQoL) of eating-disorder patients. Although the ED-QOL is one of the most widely used questionnaires in many countries, no prior research has addressed the psychometric properties of the Japanese translation of the ED-QOL. Therefore, the aim of the present study was to assess its reliability and validity. Methods A total of 99 Japanese female eating disorder patients and 469 female healthy university undergraduate students completed the Japanese translation of the ED-QOL in addition to the Eating Attitudes Test-26 (EAT-26) and Eating Disorder Inventory-2 (EDI-2). The patient group consisted of 37 patients with anorexia nervosa restricting type (AN-R), 35 patients with binge-eating/purge type (AN-BP), and 27 patients with bulimia nervosa (BN). We performed confirmatory factor analyses on the ED-QOL subscales both for Japanese eating disorder patients and for healthy university undergraduate students. Reliability was assessed using internal consistency indicated by Cronbach alpha coefficients and convergent validity was assessed using Pearson’s correlation coefficients. To assess group differences between the eating disorder patients and healthy university undergraduate students, Student’s t-tests were conducted. Results The CFA showed that the CFI was .90 and RMSEA was .084 (90% confidence interval = .079–.088). The internal consistency of the ED-QOL varied from good to excellent. The EAT-26 total score and three subscales and the EDI-2 subscales had significant correlations with the ED-QOL global QOL score and four subscales. There were no significant correlations between the EDI-2 subscale “Body Dissatisfaction” and the ED-QOL subscales “Physical/Cognitive” and “Work/School”. Eating disorder patients scored significantly higher than healthy university undergraduate students on all ED-QOL subscales and the global QOL score. Conclusions Based on this study, the Japanese translation of the ED-QOL can be regarded as reliable, valid, and functional for female eating-disorder patients and female healthy university undergraduate students.
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Affiliation(s)
- Ryo Yoneda
- Department of Psychosomatic Medicine, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655 Japan
| | - Makoto Otani
- Department of Psychosomatic Medicine, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655 Japan
| | - Maiko Hiraide
- Department of Psychosomatic Medicine, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655 Japan
| | - Takeshi Horie
- Department of Psychosomatic Medicine, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655 Japan
| | - Tomoyo Mitsui
- Department of Psychology, Faculty of Human Development and Education, Kobe Shinwa Women's University, 7-13-1 Suzurandaikitamachi Kita-Ku, Kobe, Hyogo 651-1111 Japan
| | - Toshiyuki Yoshida
- School of Health Sciences at Fukuoka, International University of Health and Welfare, 137-1 Enokizu, Okawa, Fukuoka, 831-8501 Japan
| | - Gen Komaki
- School of Health Sciences at Fukuoka, International University of Health and Welfare, 137-1 Enokizu, Okawa, Fukuoka, 831-8501 Japan
| | - Kazuhiro Yoshiuchi
- Department of Psychosomatic Medicine, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655 Japan.,Department of Stress Sciences and Psychosomatic Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655 Japan
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16
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Tsuruha T, Yamada Y, Otani M, Takano Y. Effect of casing on sound absorption characteristics of fine spherical granular material. J Acoust Soc Am 2020; 147:3418. [PMID: 32486764 DOI: 10.1121/10.0001210] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2019] [Accepted: 04/20/2020] [Indexed: 06/11/2023]
Abstract
To determine sound absorption coefficients of fine granular materials, the materials must be cased to suppress their flowability. In this study, effects of casing on the sound absorption coefficients of fine granular materials were investigated. The normal incidence sound absorption coefficients of cased hollow glass beads were measured using cylindrical impedance tubes. The measurement results demonstrated that the hollow glass beads present a sound absorption peak, which was attributed to the vibration of a particle frame, in the frequency range of 180 to 700 Hz for sample thickness in the range of 20 to 550 mm. With an increase in the material thickness or diameter of the casing, the first peak of the sound absorption coefficients shifted to a lower frequency. The sound absorption coefficients were calculated using an elastic frame model for porous materials. The effects of friction between the lateral wall of the case and the particle frame were incorporated in the bulk modulus and bulk density of the particle frame in the model. The model predicts correctly the frequency at which the first sound absorption peak occurs with an uncertainty of 10%.
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Affiliation(s)
- Takumasa Tsuruha
- Takenaka R&D Institute, 1-5-1, Otsuka, Inzai, Chiba 270-1395, Japan
| | - Yoshinari Yamada
- Takenaka R&D Institute, 1-5-1, Otsuka, Inzai, Chiba 270-1395, Japan
| | - Makoto Otani
- Graduate School of Engineering, Kyoto University, Kyoto-daigaku Katsura, Nishikyo, Kyoto, 615-8540, Japan
| | - Yasushi Takano
- Graduate School of Engineering, Kyoto University, Kyoto-daigaku Katsura, Nishikyo, Kyoto, 615-8540, Japan
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17
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Fujino Y, Tanzawa K, Muramatsu K, Otani M, Kubo T. [Development of a Method for Assignment Control in Randomized Controlled Trials]. J UOEH 2020; 42:77-82. [PMID: 32213745 DOI: 10.7888/juoeh.42.77] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Randomized controlled trials (RCT) are the most reliable study design for causality estimation in medical research. Proper implementation of the process of randomization is necessary to ensure the reliability of RCT. In order to do so, 1) generation of randomization sequence, 2) allocation concealment, and 3) allocation must be properly implemented. Methods such as the central secretariat method, the envelope method, and the sequentially numbered container method are adopted to secure proper implementation. For investigator-initiated clinical research and relatively small-scale clinical research, the envelope method and the sequentially numbered container method are often adopted because of budgetary reasons, but these methods do not assure the implementation of proper RCT. Therefore, we designed an assignment management note system as a new method to manage the assignment of RCT that can be implemented in small scale clinical research. In this paper, we compare the assignment management note system with the conventional method from the viewpoint of the procedure necessary for the proper implementation of RCT, and discuss the advantages and limitations of the assignment management note system.
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Affiliation(s)
- Yoshihisa Fujino
- Department of Environmental Epidemiology, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Japan
| | | | - Keiji Muramatsu
- Department of Preventive Medicine and Community Health, School of Medicine, University of Occupational and Environmental Health, Japan
| | - Makoto Otani
- Occupational Health Data Science Center, University of Occupational and Environmental Health, Japan
| | - Tatsuhiko Kubo
- Department of Environmental Epidemiology, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Japan
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18
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Otani M, Hasegawa K, Shonaka T, Gochi M, Miyamoto M, Tani C, Matsuno N, Furukawa H, Sumi Y. MON-PO599: Beneficial Effects of the Short-Term Early Enteral Nutrition Immediately After Gastrectomy for Gastric Cancer: A Propensity Score Matching Analysis. Clin Nutr 2019. [DOI: 10.1016/s0261-5614(19)32432-x] [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: 11/15/2022]
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19
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Muramatsu K, Fujino Y, Kubo T, Otani M, Matsuda S. Relationship between treatment and period of absence among employees on sick leave due to mental disease. Ind Health 2019; 57:79-83. [PMID: 30531106 PMCID: PMC6363582 DOI: 10.2486/indhealth.2018-0055] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 11/29/2018] [Indexed: 06/09/2023]
Abstract
This study used health insurance claims data to examine the relationship between the length of sick leave and treatment administered to employees who received middle- to long-term accident and sickness benefits for ≥91 d due to mood disorders, anxiety, and dissociative, stress-related, somatoform and other nonpsychotic mental disorders. Employees who received psychotherapy had significantly shorter leaves of absence over one year compared to those that did not. Treatment with psychotropic drugs was significantly higher among those on leave for ≤365 d than those on leave for ≥366 d. Age, sex and hospital treatment were not significantly associated with length of sick leave. These results suggest that professional psychological treatment is associated with length of sick leave.
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Affiliation(s)
- Keiji Muramatsu
- Department of Preventive Medicine and Community Health, School of Medicine, University of Occupational and Environmental Health, Japan
| | - Yoshihisa Fujino
- Department of Environmental Epidemiology, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Japan
| | - Tatsuhiko Kubo
- Department of Environmental Epidemiology, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Japan
| | - Makoto Otani
- Data Science Center of Occupational Health, University of Occupational and Environmental Health, Japan
| | - Shinya Matsuda
- Department of Preventive Medicine and Community Health, School of Medicine, University of Occupational and Environmental Health, Japan
- Data Science Center of Occupational Health, University of Occupational and Environmental Health, Japan
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20
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Araki S, Tomioka S, Otani M, Suga S, Ichikawa S, Matsuda S, Fushimi K, Kusuhara K, Shirahata A. Incidence and In-Hospital Mortality of Neonatal Disseminated Intravascular Coagulation in Japan: An Observational Study of a Nationwide Hospital Claims Database. J UOEH 2019; 41:295-302. [PMID: 31548484 DOI: 10.7888/juoeh.41.295] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
This study aimed to estimate the incidence and prognosis of neonatal disseminated intravascular coagulation (DIC) in Japan by analyzing data retrieved from a national administrative database. Clinically, the prognosis of DIC in neonates is poor, but there is little epidemiological data in Japan. This retrospective observational study identified patients diagnosed with neonatal DIC and who were registered in the Japanese diagnosis procedure combination (DPC) database between April 1, 2014 and March 31, 2016. The patients, who were diagnosed with neonatal DIC, included those with ICD-10 code D65 or P60 in primary and secondary diagnosis, with comorbid conditions existing at admission, and with complications occurring after admission. Of 78,073 neonates admitted to 1,474 neonatal intensive care units, 1,864 (2.4%) were diagnosed with DIC. There was no difference between sexes in incidence of DIC; the incidence of DIC was higher in extremely low birth weight infants (9.8%), and significantly higher than that in normal birth weight infants. The overall mean length of hospital stay was longer in neonates with DIC (69.5 days) than in those without DIC (32.6 days, P < 0.001). The number of deaths was 1,156 (1.5%). In-hospital mortality was significantly higher in neonates with DIC (14.1%) than in those without DIC (1.2%, P < 0.001), especially in premature babies. This nationwide study was the first report to investigate the incidence and in-hospital mortality of neonatal DIC in Japan. Neonatal DIC has a significant impact on prognosis, and its influence is greater in premature than in term infants.
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Affiliation(s)
- Shunsuke Araki
- Department of Pediatrics, School of Medicine, University of Occupational and Environmental Health, Japan
| | - Shinichi Tomioka
- Department of Preventive Medicine and Community Health, School of Medicine, University of Occupational and Environmental Health, Japan
| | - Makoto Otani
- Occupational Health Data Science Center, School of Medicine, University of Occupational and Environmental Health, Japan
| | - Shutaro Suga
- Department of Pediatrics, School of Medicine, University of Occupational and Environmental Health, Japan
| | - Shun Ichikawa
- Department of Pediatrics, School of Medicine, University of Occupational and Environmental Health, Japan
| | - Shinya Matsuda
- Department of Preventive Medicine and Community Health, School of Medicine, University of Occupational and Environmental Health, Japan
- Occupational Health Data Science Center, School of Medicine, University of Occupational and Environmental Health, Japan
| | - Kiyohide Fushimi
- Department of Health Policy and Informatics, Tokyo Medical and Dental University Graduate School
| | - Koichi Kusuhara
- Department of Pediatrics, School of Medicine, University of Occupational and Environmental Health, Japan
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21
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Otani M, Iwashita K, Utsumi T, Kawamura S. Optimization of differentiation condition for K562 cell line and rat erythroleukemia cell line. Toxicol Lett 2018. [DOI: 10.1016/j.toxlet.2018.06.1030] [Citation(s) in RCA: 1] [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: 11/29/2022]
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22
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Yoshikawa R, Obara H, Matsuno N, Morito N, Gouchi M, Otani M, Shonaka T, Takahashi H, Enosawa S, Hirano T, Furukawa H. Ex Vivo Reperfusion Model to Evaluate Utility of Machine Preservation for Porcine Liver Donated After Cardiac Death. Transplant Proc 2018; 50:2826-2829. [PMID: 30401405 DOI: 10.1016/j.transproceed.2018.04.020] [Citation(s) in RCA: 5] [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] [Received: 01/10/2018] [Revised: 03/22/2018] [Accepted: 04/06/2018] [Indexed: 12/27/2022]
Abstract
BACKGROUND Machine perfusion (MP) techniques are expected to prove useful for preserving the organ viability and recovering organ function for organ transplantation. Furthermore, an accurate assessment of organ viability using MP is important for expanding the donor criteria. In this study, an ex vivo reperfusion model (ERM) simulating transplantation using diluted autologous blood under normothermic conditions was evaluated for its utility of MP under subnormothermic conditions for livers donated after cardiac death (DCD). METHODS The liver preservation methods for DCD porcine livers were evaluated using the ERM. This investigation was performed using a novel perfusion system developed by our research group. Porcine livers were procured with a warm ischemia time (WIT) of 60 minutes. The organs were then preserved using subnormothemic machine perfusion (SNMP) or static cold storage (CS) for 4 hours. We also compared these tissues with SNMP livers procured under a WIT of 0 minutes. After the preservation, the livers were reperfused for 2 hours using the ERM with diluted autologous blood oxygenated by a membrane oxygenator under NMP conditions. Reperfusion was evaluated based on perfusion flow dynamics and outflow of deviating enzymes. RESULTS In the early stages of reperfusion, pressure in the blood vessels increased sharply in the CS group. Furthermore, the amount of aspartate aminotransferase accumulation was lower in the SNMP group than in the other groups. These results suggest ischemia-reperfusion injury is suppressed in SNMP conditions. CONCLUSION An ERM has use in evaluating the utility of MP for the DCD liver.
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Affiliation(s)
- R Yoshikawa
- Department of Mechanical Engineering, Tokyo Metropolitan University, Tokyo, Japan
| | - H Obara
- Department of Mechanical Engineering, Tokyo Metropolitan University, Tokyo, Japan; National Center for Child Health and Development, Tokyo, Japan
| | - N Matsuno
- Department of Mechanical Engineering, Tokyo Metropolitan University, Tokyo, Japan; National Center for Child Health and Development, Tokyo, Japan; Department of Surgery, Asahikawa Medical University, Hokkaido, Japan.
| | - N Morito
- Department of Mechanical Engineering, Tokyo Metropolitan University, Tokyo, Japan
| | - M Gouchi
- Department of Surgery, Asahikawa Medical University, Hokkaido, Japan
| | - M Otani
- Department of Surgery, Asahikawa Medical University, Hokkaido, Japan
| | - T Shonaka
- Department of Surgery, Asahikawa Medical University, Hokkaido, Japan
| | - H Takahashi
- Department of Surgery, Asahikawa Medical University, Hokkaido, Japan
| | - S Enosawa
- National Center for Child Health and Development, Tokyo, Japan
| | - T Hirano
- Department of Clinical Pharmacology, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan
| | - H Furukawa
- Department of Surgery, Asahikawa Medical University, Hokkaido, Japan
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Obara H, Morito N, Matsuno N, Yoshikawa R, Gouchi M, Otani M, Shonaka T, Takahashi H, Enosawa S, Hirano T, Furukawa H. Optimum Perfusate Volume of Purified Subnormothermic Machine Perfusion for Porcine Liver Donated After Cardiac Death. Transplant Proc 2018; 50:2830-2833. [PMID: 30401406 DOI: 10.1016/j.transproceed.2018.03.055] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2018] [Accepted: 03/02/2018] [Indexed: 02/06/2023]
Abstract
INTRODUCTION Subnormothermic machine perfusion (SNMP) shows some advantages for the preservation of grafts donated after cardiac death (DCD) and improvements in machine perfusion (MP) technology are important to enhance organ preservation outcomes for liver transplantation. In this study, we focused on purified subnormothermic machine perfusion (PSNMP) and volumes of perfusate removed to substitute for purification and replaced by modified University of Wisconsin-gluconate after the start of perfusion and investigated, in particular, the optimum perfusate purification volume. Several purification volumes under SNMP were compared. In addition, the perfusate purification during MP was indicated as a potential technique to enhance the organ quality of DCD grafts and extended-criteria donors. METHODS The PSNMP at several volumes (0.5 L, 1.5 L, and 3 L) were compared with regular SNMP without any purification treatment (untreated control). In the PSNMP group, all perfusate was removed to substitute for purification of the perfusate by modified University of Wisconsin-gluconate solution after the start of perfusion. After removing the perfusate, new perfusate with the same components was perfused to preserve the porcine livers obtained under warm ischemia for 60 minutes using SNMP at 22°C porcine liver for 4 hours. RESULTS The concentrations of aspartate aminotransferase and lactate dehydrogenase in the untreated group were significantly higher during perfusion compared to those of the intervention group. There are no significant differences among the volume conditions of the purification groups. CONCLUSIONS The optimal volume of perfusate purification was confirmed with a simple experimental comparison between untreated and PSNMP conditions.
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Affiliation(s)
- H Obara
- Department of Mechanical Engineering, Tokyo Metropolitan University, Tokyo, Japan; National Center for Child Health and Development, Tokyo, Japan.
| | - N Morito
- Department of Mechanical Engineering, Tokyo Metropolitan University, Tokyo, Japan
| | - N Matsuno
- Department of Mechanical Engineering, Tokyo Metropolitan University, Tokyo, Japan; National Center for Child Health and Development, Tokyo, Japan; Department of Surgery, Asahikawa Medical University, Hokkaido, Japan
| | - R Yoshikawa
- Department of Mechanical Engineering, Tokyo Metropolitan University, Tokyo, Japan
| | - M Gouchi
- Department of Surgery, Asahikawa Medical University, Hokkaido, Japan
| | - M Otani
- Department of Surgery, Asahikawa Medical University, Hokkaido, Japan
| | - T Shonaka
- Department of Surgery, Asahikawa Medical University, Hokkaido, Japan
| | - H Takahashi
- Department of Surgery, Asahikawa Medical University, Hokkaido, Japan
| | - S Enosawa
- National Center for Child Health and Development, Tokyo, Japan
| | - T Hirano
- Department of Clinical Pharmacology, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan
| | - H Furukawa
- Department of Surgery, Asahikawa Medical University, Hokkaido, Japan
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Toi H, Kinoshita K, Hirai S, Takai H, Hara K, Matsushita N, Matsubara S, Otani M, Muramatsu K, Matsuda S, Fushimi K, Uno M. Present epidemiology of chronic subdural hematoma in Japan: analysis of 63,358 cases recorded in a national administrative database. J Neurosurg 2018; 128:222-228. [DOI: 10.3171/2016.9.jns16623] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVEAging of the population may lead to epidemiological changes with respect to chronic subdural hematoma (CSDH). The objectives of this study were to elucidate the current epidemiology and changing trends of CSDH in Japan. The authors analyzed patient information based on reports using a Japanese administrative database associated with the diagnosis procedure combination (DPC) system.METHODSThis study included patients with newly diagnosed CSDH who were treated in hospitals participating in the DPC system. The authors collected data from the administrative database on the following clinical and demographic characteristics: patient age, sex, and level of consciousness on admission; treatment procedure; and outcome at discharge.RESULTSA total of 63,358 patients with newly diagnosed CSDH and treated in 1750 DPC participation hospitals were included in this study. Analysis according to patient age showed that the most common age range for these patients was the 9th decade of life (in their 80s). More than half of patients 70 years old or older presented with some kind of disturbance of consciousness. Functional outcomes at discharge were good in 71.6% (modified Rankin Scale [mRS] score 0–2) of cases and poor in 28.4% (mRS score 3–6). The percentage of poor outcomes tended to be higher in elderly patients. Approximately 40% of patients 90 years old or older could not be discharged to home. The overall recurrence rate for CSDH was 13.1%.CONCLUSIONSThis study shows a chronological change in the age distribution of CSDH among Japanese patients, which may be affecting the prognosis of this condition. In the aging population of contemporary Japan, patients in their 80s were affected more often than patients in other age categories, and approximately 30% of patients with CSDH required some help at discharge. CSDH thus may no longer have as good a prognosis as had been thought.
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Affiliation(s)
- Hiroyuki Toi
- 1Department of Neurosurgery, Kawasaki Medical School, Kurashiki, Okayama
| | - Keita Kinoshita
- 1Department of Neurosurgery, Kawasaki Medical School, Kurashiki, Okayama
| | - Satoshi Hirai
- 1Department of Neurosurgery, Kawasaki Medical School, Kurashiki, Okayama
| | - Hiroki Takai
- 1Department of Neurosurgery, Kawasaki Medical School, Kurashiki, Okayama
| | - Keijiro Hara
- 1Department of Neurosurgery, Kawasaki Medical School, Kurashiki, Okayama
| | | | - Shunji Matsubara
- 1Department of Neurosurgery, Kawasaki Medical School, Kurashiki, Okayama
| | - Makoto Otani
- 2Department of Preventive Medicine and Community Health, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Fukuoka; and
| | - Keiji Muramatsu
- 2Department of Preventive Medicine and Community Health, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Fukuoka; and
| | - Shinya Matsuda
- 2Department of Preventive Medicine and Community Health, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Fukuoka; and
| | - Kiyohide Fushimi
- 3Department of Health Policy and Informatics, Tokyo Medical and Dental University, Tokyo, Japan
| | - Masaaki Uno
- 1Department of Neurosurgery, Kawasaki Medical School, Kurashiki, Okayama
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Muramatsu K, Fujino Y, Kubo T, Otani M, Fushimi K, Matsuda S. Efficacy of Antimicrobial Catheters for Prevention of Catheter-Associated Urinary Tract Infection in Acute Cerebral Infarction. J Epidemiol 2017; 28:54-58. [PMID: 29093305 PMCID: PMC5742380 DOI: 10.2188/jea.je20170022] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Background Catheter-associated urinary tract infection (CAUTI) is a common nosocomial infection. However, the effectiveness of antimicrobial catheters in reducing CAUTI in cerebral infarction patients is unknown. The purpose of this study was to determine whether antimicrobial catheters protect against CAUTI in cerebral infarction patients. Methods We identified 27,548 patients from the Japanese Diagnosis Procedure Combination Database who had been admitted from April 1, 2012 through March 31, 2014 for acute management of cerebral infarction and had used at least an indwelling urethral catheter. We extracted data on patient sex, age, comorbidity, length of stay, activities of daily living (ADL), surgery, hospital case volume, and catheter type. We defined CAUTI as a urinary tract infection arising during admission. We performed multi-level logistic regression analysis to analyze the reduction in CAUTI using antimicrobial catheters. Results The rate of CAUTI was 8.8% and 8.3% in the control and antimicrobial catheter groups, respectively. Significant risk factors for CAUTI were age, diabetes requiring insulin therapy, low ADL score, and long hospitalization. Incidence rate was significantly lower in operated cases and those treated with tissue plasminogen activator. For all cases overall, the use of an antimicrobial catheter was not associated with a lower CAUTI rate. However, use was associated with a lower rate of CAUTI in diabetic patients on insulin. Conclusions Antimicrobial catheter use was not associated with a lower incidence rate of CAUTI in acute cerebral infarction patients. However, stratified analysis suggested that use was associated with a lower incidence in diabetic patients on insulin.
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Affiliation(s)
- Keiji Muramatsu
- Department of Preventive Medicine and Community Health, School of Medicine, University of Occupational and Environmental Health
| | - Yoshihisa Fujino
- Department of Preventive Medicine and Community Health, School of Medicine, University of Occupational and Environmental Health.,Data Science Center of Occupational Health, University of Occupational and Environmental Health
| | - Tatsuhiko Kubo
- Department of Preventive Medicine and Community Health, School of Medicine, University of Occupational and Environmental Health
| | - Makoto Otani
- Data Science Center of Occupational Health, University of Occupational and Environmental Health
| | - Kiyohide Fushimi
- Department of Health Policy and Informatics, Tokyo Medical and Dental University Graduate School
| | - Shinya Matsuda
- Department of Preventive Medicine and Community Health, School of Medicine, University of Occupational and Environmental Health.,Data Science Center of Occupational Health, University of Occupational and Environmental Health
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Otani M, Matsumoto R, Uehara N, Fumuro T, Shimotake A, Matsuhashi M, Demura A, Kinoshita M, Takahashi R, Ikeda A. Electro-clinical features of language-induced seizures. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1918] [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: 11/26/2022]
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Kobori S, Kubo T, Otani M, Muramatsu K, Fujino Y, Adachi H, Horiguchi H, Fushimi K, Matsuda S. Coexisting infectious diseases on admission as a risk factor for mechanical ventilation in patients with Guillain-Barré syndrome. J Epidemiol 2017; 27:311-316. [PMID: 28283417 PMCID: PMC5498408 DOI: 10.1016/j.je.2016.07.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Accepted: 07/20/2016] [Indexed: 11/30/2022] Open
Abstract
Background The aim of this study was to investigate patient characteristics on admission to hospital that increase the risk of subsequent mechanical ventilation (MV) use for patients with Guillain–Barré syndrome (GBS). Methods We extracted data from the Japanese Diagnosis Procedure Combination (DPC) database for 4132 GBS patients admitted to hospital. Clinical characteristics of GBS patients with and without MV were compared. Multivariate logistic regression analyses were performed to estimate the odds ratios (ORs) and 95% confidence intervals (CIs) for the associations of requirement for MV with coexisting infectious diseases, after adjustment for potential confounding variables, age, sex, hospital type, and ambulance transportation. Results In total, 281 patients required MV, and 493 patients had coexisting respiratory diseases on admission. After adjustment for covariates and stratification by coexisting respiratory diseases, multivariate logistic regression analysis revealed that coexisting cytomegaloviral (CMV) disease (OR 8.81; 95% CI, 2.34–33.1) and herpes simplex viral (HSV) infections (OR 4.83; 95% CI, 1.16–20.1) were significantly associated with the requirement for MV in the group without coexisting respiratory diseases. Conclusion Our findings suggest that coexisting CMV and HSV infections on admission might be significantly associated with increased risk of respiratory failure in GBS patients. Subjects of this study were 4132 inpatients with Guillain–Barré syndrome. Data were derived from the Japanese Diagnosis Procedure Combination (DPC) database. Association between comorbidities and mechanical ventilation use was evaluated. Cytomegaloviral and herpes simplex viral infections were associated with ventilation.
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Affiliation(s)
- Shinichiro Kobori
- Department of Preventive Medicine and Community Health, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Fukuoka, Japan; Department of Occupational Health Data Science Center, University of Occupational and Environmental Health, Kitakyushu, Fukuoka, Japan.
| | - Tatsuhiko Kubo
- Department of Preventive Medicine and Community Health, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Fukuoka, Japan
| | - Makoto Otani
- Department of Occupational Health Data Science Center, University of Occupational and Environmental Health, Kitakyushu, Fukuoka, Japan
| | - Keiji Muramatsu
- Department of Preventive Medicine and Community Health, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Fukuoka, Japan
| | - Yoshihisa Fujino
- Department of Preventive Medicine and Community Health, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Fukuoka, Japan
| | - Hiroaki Adachi
- Department of Neurology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Fukuoka, Japan
| | - Hiromasa Horiguchi
- Department of Clinical Data Management and Research, Clinical Research Center, National Hospital Organization Headquarters, Tokyo, Japan
| | - Kiyohide Fushimi
- Department of Health Policy and Informatics, Tokyo Medical and Dental University, Graduate School of Medicine, Tokyo, Japan
| | - Shinya Matsuda
- Department of Preventive Medicine and Community Health, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Fukuoka, Japan
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Horie T, Harashima S, Yoneda R, Hiraide M, Inada S, Otani M, Yoshiuchi K. A series of patients with purging type anorexia nervosa who do "tube vomiting". Biopsychosoc Med 2016; 10:32. [PMID: 27891176 PMCID: PMC5111253 DOI: 10.1186/s13030-016-0083-3] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Accepted: 11/08/2016] [Indexed: 11/18/2022] Open
Abstract
Background It is important for clinicians to assess their patients’ purging behavior. Various methods of purging, such as self-induced vomiting are well-known. Because patients do not always report their purging behavior, knowing the clinical signs that indicate the behavior is useful. However, we have experienced patients who did not have the reported physical signs of self-induced vomiting because they used hoses instead of their fingers to purge their stomach contents, which they call “tube vomiting”. No other previous studies have reported the use of hoses as a purging tool. Case presentation We present as our main case a 20-year-old Japanese woman with anorexia nervosa who engaged in “tube vomiting.” Although she recovered well under medical treatment in our hospital, she began to lose weight and blood potassium soon after discharge. We found that she used a garden hose instead of her fingers to perform self-induced vomiting,. She inserted the hose into her stomach and evacuated the stomach contents through it, without pain. She learned this technique through a blog about eating disorders. We also present two other similar cases. In fact, many patients discuss “tube vomiting” on the internet. Conclusion Our experience suggests that a sudden decrease in the weight and blood potassium level could indicate “tube vomiting”. In addition, because many information resources are available on the internet, medical practitioners should be aware of these sites.
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Affiliation(s)
- Takeshi Horie
- Department of Stress Sciences and Psychosomatic Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Saki Harashima
- Department of Stress Sciences and Psychosomatic Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Ryo Yoneda
- Department of Stress Sciences and Psychosomatic Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Maiko Hiraide
- Department of Stress Sciences and Psychosomatic Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Shuji Inada
- Department of Stress Sciences and Psychosomatic Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Makoto Otani
- Department of Stress Sciences and Psychosomatic Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Kazuhiro Yoshiuchi
- Department of Stress Sciences and Psychosomatic Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
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Abstract
Radical surgery for thoracic oesophageal cancer is highly invasive and often leads to respiratory complications; thoracoscopic surgery is a less-invasive alternative. We examined the need for chest physical therapy (CPT) after thoracoscopic oesophagectomy. Thirty-six consecutive patients, randomly selected for either thoracotomy or thoracoscopic surgery, were included in a randomized clinical trial and received CPT under the same protocol. During short-term post-operative follow-up, both groups showed a marked reduction in respiratory function and responded to CPT to the same extent, although 2 weeks after surgery some parameters of respiratory function were significantly higher in the thoracoscopy group. Thoracoscopic surgery has been reported to be less invasive than standard thoracotomy, but our results suggest that the procedure is also invasive with respect to respiratory function and that CPT should be performed before and after thoracoscopic surgery.
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Affiliation(s)
- T Nakatsuchi
- Division of Rehabilitation Medicine, Osaka City University Medical School, Osaka, Japan
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Abe K, Adam J, Aihara H, Akiri T, Andreopoulos C, Aoki S, Ariga A, Assylbekov S, Autiero D, Barbi M, Barker G, Barr G, Bass M, Batkiewicz M, Bay F, Berardi V, Berger B, Berkman S, Bhadra S, Blaszczyk F, Blondel A, Bojechko C, Bordoni S, Boyd S, Brailsford D, Bravar A, Bronner C, Buchanan N, Calland R, Caravaca Rodríguez J, Cartwright S, Castillo R, Catanesi M, Cervera A, Cherdack D, Christodoulou G, Clifton A, Coleman J, Coleman S, Collazuol G, Connolly K, Cremonesi L, Dabrowska A, Danko I, Das R, Davis S, de Perio P, De Rosa G, Dealtry T, Dennis S, Densham C, Dewhurst D, Di Lodovico F, Di Luise S, Drapier O, Duboyski T, Duffy K, Dumarchez J, Dytman S, Dziewiecki M, Emery-Schrenk S, Ereditato A, Escudero L, Finch A, Friend M, Fujii Y, Fukuda Y, Furmanski A, Galymov V, Giffin S, Giganti C, Gilje K, Goeldi D, Golan T, Gonin M, Grant N, Gudin D, Hadley D, Haesler A, Haigh M, Hamilton P, Hansen D, Hara T, Hartz M, Hasegawa T, Hastings N, Hayato Y, Hearty C, Helmer R, Hierholzer M, Hignight J, Hillairet A, Himmel A, Hiraki T, Hirota S, Holeczek J, Horikawa S, Huang K, Ichikawa A, Ieki K, Ieva M, Ikeda M, Imber J, Insler J, Irvine T, Ishida T, Ishii T, Iwai E, Iwamoto K, Iyogi K, Izmaylov A, Jacob A, Jamieson B, Johnson R, Jo J, Jonsson P, Jung C, Kabirnezhad M, Kaboth A, Kajita T, Kakuno H, Kameda J, Kanazawa Y, Karlen D, Karpikov I, Katori T, Kearns E, Khabibullin M, Khotjantsev A, Kielczewska D, Kikawa T, Kilinski A, Kim J, Kisiel J, Kitching P, Kobayashi T, Koch L, Kolaceke A, Konaka A, Kormos L, Korzenev A, Koseki K, Koshio Y, Kreslo I, Kropp W, Kubo H, Kudenko Y, Kurjata R, Kutter T, Lagoda J, Laihem K, Lamont I, Larkin E, Laveder M, Lawe M, Lazos M, Lindner T, Lister C, Litchfield R, Longhin A, Ludovici L, Magaletti L, Mahn K, Malek M, Manly S, Marino A, Marteau J, Martin J, Martynenko S, Maruyama T, Matveev V, Mavrokoridis K, Mazzucato E, McCarthy M, McCauley N, McFarland K, McGrew C, Metelko C, Mijakowski P, Miller C, Minamino A, Mineev O, Missert A, Miura M, Moriyama S, Mueller T, Murakami A, Murdoch M, Murphy S, Myslik J, Nakadaira T, Nakahata M, Nakamura K, Nakayama S, Nakaya T, Nakayoshi K, Nielsen C, Nirkko M, Nishikawa K, Nishimura Y, O’Keeffe H, Ohta R, Okumura K, Okusawa T, Oryszczak W, Oser S, Otani M, Owen R, Oyama Y, Palladino V, Palomino J, Paolone V, Payne D, Perevozchikov O, Perkin J, Petrov Y, Pickard L, Pinzon Guerra E, Pistillo C, Plonski P, Poplawska E, Popov B, Posiadala M, Poutissou JM, Poutissou R, Przewlocki P, Quilain B, Radicioni E, Ratoff P, Ravonel M, Rayner M, Redij A, Reeves M, Reinherz-Aronis E, Retiere F, Rodrigues P, Rojas P, Rondio E, Roth S, Rubbia A, Ruterbories D, Sacco R, Sakashita K, Sánchez F, Sato F, Scantamburlo E, Scholberg K, Schoppmann S, Schwehr J, Scott M, Seiya Y, Sekiguchi T, Sekiya H, Sgalaberna D, Shiozawa M, Short S, Shustrov Y, Sinclair P, Smith B, Smy M, Sobczyk J, Sobel H, Sorel M, Southwell L, Stamoulis P, Steinmann J, Still B, Suda Y, Suzuki A, Suzuki K, Suzuki S, Suzuki Y, Szeglowski T, Tacik R, Tada M, Takahashi S, Takeda A, Takeuchi Y, Tanaka H, Tanaka H, Tanaka M, Terhorst D, Terri R, Thompson L, Thorley A, Tobayama S, Toki W, Tomura T, Totsuka Y, Touramanis C, Tsukamoto T, Tzanov M, Uchida Y, Vacheret A, Vagins M, Vasseur G, Wachala T, Waldron A, Walter C, Wark D, Wascko M, Weber A, Wendell R, Wilkes R, Wilking M, Wilkinson C, Williamson Z, Wilson J, Wilson R, Wongjirad T, Yamada Y, Yamamoto K, Yanagisawa C, Yano T, Yen S, Yershov N, Yokoyama M, Yuan T, Yu M, Zalewska A, Zalipska J, Zambelli L, Zaremba K, Ziembicki M, Zimmerman E, Zito M, Żmuda J. Measurement of the inclusiveνμcharged current cross section on iron and hydrocarbon in the T2K on-axis neutrino beam. Int J Clin Exp Med 2014. [DOI: 10.1103/physrevd.90.052010] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Rébillat M, Benichoux V, Otani M, Keriven R, Brette R. Estimation of the low-frequency components of the head-related transfer functions of animals from photographs. J Acoust Soc Am 2014; 135:2534-2544. [PMID: 24815237 DOI: 10.1121/1.4869087] [Citation(s) in RCA: 2] [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] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Reliable animal head-related transfer function (HRTF) estimation procedures are needed for several practical applications, for example, to investigate the neuronal mechanisms of sound localization using virtual acoustic spaces or to have a quantitative description of the different localization cues available to a given animal species. Here, two established techniques are combined to estimate an animal's HRTF from photographs by taking into account as much morphological detail as possible. The first step of the method consists in building a three-dimensional-model of the animal from pictures taken with a standard camera. The HRTFs are then estimated by means of a rapid boundary-element-method implementation. This combined method is validated on a taxidermist model of a cat by comparing binaural and monaural localization cues extracted from estimated and measured HRTFs. It is shown that it provides a reliable way to estimate low-frequency HRTF, which is difficult to obtain with standard acoustical measurements procedures because of reflections.
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Affiliation(s)
| | - Victor Benichoux
- Département d'Études Cognitives, École Normale Supérieure and Laboratoire Psychologie de la Perception, CNRS and Université Paris Descartes, Paris, France
| | - Makoto Otani
- Faculty of Engineering, Shinshu University, Nagano, Japan
| | - Renaud Keriven
- Acute3D, Centre International de Communication Avancée, Sophia-Antipolis, France
| | - Romain Brette
- Département d'Études Cognitives, École Normale Supérieure and Laboratoire Psychologie de la Perception, CNRS and Université Paris Descartes, Paris, France
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Abe K, Adam J, Aihara H, Akiri T, Andreopoulos C, Aoki S, Ariga A, Ariga T, Assylbekov S, Autiero D, Barbi M, Barker GJ, Barr G, Bass M, Batkiewicz M, Bay F, Bentham SW, Berardi V, Berger BE, Berkman S, Bertram I, Bhadra S, Blaszczyk FDM, Blondel A, Bojechko C, Bordoni S, Boyd SB, Brailsford D, Bravar A, Bronner C, Buchanan N, Calland RG, Caravaca Rodríguez J, Cartwright SL, Castillo R, Catanesi MG, Cervera A, Cherdack D, Christodoulou G, Clifton A, Coleman J, Coleman SJ, Collazuol G, Connolly K, Cremonesi L, Curioni A, Dabrowska A, Danko I, Das R, Davis S, de Perio P, De Rosa G, Dealtry T, Dennis SR, Densham C, Di Lodovico F, Di Luise S, Drapier O, Duboyski T, Duffy K, Dufour F, Dumarchez J, Dytman S, Dziewiecki M, Emery S, Ereditato A, Escudero L, Finch AJ, Frank E, Friend M, Fujii Y, Fukuda Y, Furmanski AP, Galymov V, Gaudin A, Giffin S, Giganti C, Gilje K, Golan T, Gomez-Cadenas JJ, Gonin M, Grant N, Gudin D, Hadley DR, Haesler A, Haigh MD, Hamilton P, Hansen D, Hara T, Hartz M, Hasegawa T, Hastings NC, Hayato Y, Hearty C, Helmer RL, Hierholzer M, Hignight J, Hillairet A, Himmel A, Hiraki T, Hirota S, Holeczek J, Horikawa S, Huang K, Ichikawa AK, Ieki K, Ieva M, Ikeda M, Imber J, Insler J, Irvine TJ, Ishida T, Ishii T, Ives SJ, Iyogi K, Izmaylov A, Jacob A, Jamieson B, Johnson RA, Jo JH, Jonsson P, Joo KK, Jung CK, Kaboth AC, Kajita T, Kakuno H, Kameda J, Kanazawa Y, Karlen D, Karpikov I, Kearns E, Khabibullin M, Khotjantsev A, Kielczewska D, Kikawa T, Kilinski A, Kim J, Kim SB, Kisiel J, Kitching P, Kobayashi T, Kogan G, Kolaceke A, Konaka A, Kormos LL, Korzenev A, Koseki K, Koshio Y, Kreslo I, Kropp W, Kubo H, Kudenko Y, Kumaratunga S, Kurjata R, Kutter T, Lagoda J, Laihem K, Laveder M, Lawe M, Lazos M, Lee KP, Licciardi C, Lim IT, Lindner T, Lister C, Litchfield RP, Longhin A, Lopez GD, Ludovici L, Macaire M, Magaletti L, Mahn K, Malek M, Manly S, Marino AD, Marteau J, Martin JF, Maruyama T, Marzec J, Masliah P, Mathie EL, Matveev V, Mavrokoridis K, Mazzucato E, McCarthy M, McCauley N, McFarland KS, McGrew C, Metelko C, Mijakowski P, Miller CA, Minamino A, Mineev O, Mine S, Missert A, Miura M, Monfregola L, Moriyama S, Mueller TA, Murakami A, Murdoch M, Murphy S, Myslik J, Nagasaki T, Nakadaira T, Nakahata M, Nakai T, Nakamura K, Nakayama S, Nakaya T, Nakayoshi K, Naples D, Nielsen C, Nirkko M, Nishikawa K, Nishimura Y, O'Keeffe HM, Ohta R, Okumura K, Okusawa T, Oryszczak W, Oser SM, Otani M, Owen RA, Oyama Y, Pac MY, Palladino V, Paolone V, Payne D, Pearce GF, Perevozchikov O, Perkin JD, Petrov Y, Pinzon Guerra ES, Pistillo C, Plonski P, Poplawska E, Popov B, Posiadala M, Poutissou JM, Poutissou R, Przewlocki P, Quilain B, Radicioni E, Ratoff PN, Ravonel M, Rayner MAM, Redij A, Reeves M, Reinherz-Aronis E, Retiere F, Robert A, Rodrigues PA, Rondio E, Roth S, Rubbia A, Ruterbories D, Sacco R, Sakashita K, Sánchez F, Sato F, Scantamburlo E, Scholberg K, Schwehr J, Scott M, Seiya Y, Sekiguchi T, Sekiya H, Sgalaberna D, Shiozawa M, Short S, Shustrov Y, Sinclair P, Smith B, Smith RJ, Smy M, Sobczyk JT, Sobel H, Sorel M, Southwell L, Stamoulis P, Steinmann J, Still B, Suda Y, Suzuki A, Suzuki K, Suzuki SY, Suzuki Y, Szeglowski T, Tacik R, Tada M, Takahashi S, Takeda A, Takeuchi Y, Tanaka HK, Tanaka HA, Tanaka MM, Taylor IJ, Terhorst D, Terri R, Thompson LF, Thorley A, Tobayama S, Toki W, Tomura T, Totsuka Y, Touramanis C, Tsukamoto T, Tzanov M, Uchida Y, Ueno K, Vacheret A, Vagins M, Vasseur G, Wachala T, Waldron AV, Walter CW, Wark D, Wascko MO, Weber A, Wendell R, Wilkes RJ, Wilking MJ, Wilkinson C, Williamson Z, Wilson JR, Wilson RJ, Wongjirad T, Yamada Y, Yamamoto K, Yanagisawa C, Yen S, Yershov N, Yokoyama M, Yuan T, Zalewska A, Zalipska J, Zambelli L, Zaremba K, Ziembicki M, Zimmerman ED, Zito M, Zmuda J. Measurement of neutrino oscillation parameters from muon neutrino disappearance with an off-axis beam. Phys Rev Lett 2013; 111:211803. [PMID: 24313479 DOI: 10.1103/physrevlett.111.211803] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Revised: 10/09/2013] [Indexed: 06/02/2023]
Abstract
The T2K Collaboration reports a precision measurement of muon neutrino disappearance with an off-axis neutrino beam with a peak energy of 0.6 GeV. Near detector measurements are used to constrain the neutrino flux and cross section parameters. The Super-Kamiokande far detector, which is 295 km downstream of the neutrino production target, collected data corresponding to 3.01×10(20) protons on target. In the absence of neutrino oscillations, 205±17 (syst) events are expected to be detected while only 58 muon neutrino event candidates are observed. A fit to the neutrino rate and energy spectrum, assuming three neutrino flavors and normal mass hierarchy yields a best-fit mixing angle sin2(θ23)=0.514±0.082 and mass splitting |Δm(32)(2)|=2.44(-0.15)(+0.17)×10(-3) eV2/c4. Our result corresponds to the maximal oscillation disappearance probability.
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Affiliation(s)
- K Abe
- University of Tokyo, Institute for Cosmic Ray Research, Kamioka Observatory, Kamioka, Japan
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Abe K, Abgrall N, Aihara H, Akiri T, Albert JB, Andreopoulos C, Aoki S, Ariga A, Ariga T, Assylbekov S, Autiero D, Barbi M, Barker GJ, Barr G, Bass M, Batkiewicz M, Bay F, Bentham SW, Berardi V, Berger BE, Berkman S, Bertram I, Beznosko D, Bhadra S, Blaszczyk FDM, Blondel A, Bojechko C, Boyd S, Brailsford D, Bravar A, Bronner C, Brook-Roberge DG, Buchanan N, Calland RG, Caravaca Rodríguez J, Cartwright SL, Castillo R, Catanesi MG, Cervera A, Cherdack D, Christodoulou G, Clifton A, Coleman J, Coleman SJ, Collazuol G, Connolly K, Cremonesi L, Curioni A, Dabrowska A, Danko I, Das R, Davis S, Day M, de André JPAM, de Perio P, De Rosa G, Dealtry T, Dennis SR, Densham C, Di Lodovico F, Di Luise S, Dobson J, Drapier O, Duboyski T, Dufour F, Dumarchez J, Dytman S, Dziewiecki M, Dziomba M, Emery S, Ereditato A, Escudero L, Finch AJ, Frank E, Friend M, Fujii Y, Fukuda Y, Furmanski AP, Galymov V, Gaudin A, Giffin S, Giganti C, Gilje K, Golan T, Gomez-Cadenas JJ, Gonin M, Grant N, Gudin D, Guzowski P, Hadley DR, Haesler A, Haigh MD, Hamilton P, Hansen D, Hara T, Hartz M, Hasegawa T, Hastings NC, Hayato Y, Hearty C, Helmer RL, Hierholzer M, Hignight J, Hillairet A, Himmel A, Hiraki T, Holeczek J, Horikawa S, Huang K, Ichikawa AK, Ieki K, Ieva M, Ikeda M, Imber J, Insler J, Irvine TJ, Ishida T, Ishii T, Ives SJ, Iyogi K, Izmaylov A, Jacob A, Jamieson B, Johnson RA, Jo JH, Jonsson P, Joo KK, Jung CK, Kaboth A, Kaji H, Kajita T, Kakuno H, Kameda J, Kanazawa Y, Karlen D, Karpikov I, Kearns E, Khabibullin M, Khanam F, Khotjantsev A, Kielczewska D, Kikawa T, Kilinski A, Kim JY, Kim J, Kim SB, Kirby B, Kisiel J, Kitching P, Kobayashi T, Kogan G, Kolaceke A, Konaka A, Kormos LL, Korzenev A, Koseki K, Koshio Y, Kowalik K, Kreslo I, Kropp W, Kubo H, Kudenko Y, Kumaratunga S, Kurjata R, Kutter T, Lagoda J, Laihem K, Laing A, Laveder M, Lawe M, Lee KP, Licciardi C, Lim IT, Lindner T, Lister C, Litchfield RP, Longhin A, Lopez GD, Ludovici L, Macaire M, Magaletti L, Mahn K, Malek M, Manly S, Marchionni A, Marino AD, Marteau J, Martin JF, Maruyama T, Marzec J, Masliah P, Mathie EL, Matveev V, Mavrokoridis K, Mazzucato E, McCauley N, McFarland KS, McGrew C, McLachlan T, Messina M, Metelko C, Mezzetto M, Mijakowski P, Miller CA, Minamino A, Mineev O, Mine S, Missert A, Miura M, Monfregola L, Moriyama S, Mueller TA, Murakami A, Murdoch M, Murphy S, Myslik J, Nagasaki T, Nakadaira T, Nakahata M, Nakai T, Nakajima K, Nakamura K, Nakayama S, Nakaya T, Nakayoshi K, Naples D, Nicholls TC, Nielsen C, Nishikawa K, Nishimura Y, O’Keeffe HM, Obayashi Y, Ohta R, Okumura K, Okusawa T, Oryszczak W, Oser SM, Otani M, Owen RA, Oyama Y, Pac MY, Palladino V, Paolone V, Payne D, Pearce GF, Perevozchikov O, Perkin JD, Pinzon Guerra ES, Plonski P, Poplawska E, Popov B, Posiadala M, Poutissou JM, Poutissou R, Przewlocki P, Quilain B, Radicioni E, Ratoff PN, Ravonel M, Rayner MAM, Reeves M, Reinherz-Aronis E, Retiere F, Robert A, Rodrigues PA, Rondio E, Roth S, Rubbia A, Ruterbories D, Sacco R, Sakashita K, Sánchez F, Scantamburlo E, Scholberg K, Schwehr J, Scott M, Scully DI, Seiya Y, Sekiguchi T, Sekiya H, Sgalaberna D, Shibata M, Shiozawa M, Short S, Shustrov Y, Sinclair P, Smith B, Smith RJ, Smy M, Sobczyk JT, Sobel H, Sorel M, Southwell L, Stamoulis P, Steinmann J, Still B, Suzuki A, Suzuki K, Suzuki SY, Suzuki Y, Szeglowski T, Szeptycka M, Tacik R, Tada M, Takahashi S, Takeda A, Takeuchi Y, Tanaka HA, Tanaka MM, Tanaka M, Taylor IJ, Terhorst D, Terri R, Thompson LF, Thorley A, Tobayama S, Toki W, Tomura T, Totsuka Y, Touramanis C, Tsukamoto T, Tzanov M, Uchida Y, Ueno K, Vacheret A, Vagins M, Vasseur G, Wachala T, Waldron AV, Walter CW, Wang J, Wark D, Wascko MO, Weber A, Wendell R, Wilkes RJ, Wilking MJ, Wilkinson C, Williamson Z, Wilson JR, Wilson RJ, Wongjirad T, Yamada Y, Yamamoto K, Yanagisawa C, Yen S, Yershov N, Yokoyama M, Yuan T, Zalewska A, Zambelli L, Zaremba K, Ziembicki M, Zimmerman ED, Zito M, Żmuda J. Measurement of the inclusiveνμcharged current cross section on carbon in the near detector of the T2K experiment. Int J Clin Exp Med 2013. [DOI: 10.1103/physrevd.87.092003] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Gando A, Gando Y, Hanakago H, Ikeda H, Inoue K, Ishidoshiro K, Kato R, Koga M, Matsuda S, Mitsui T, Motoki D, Nakada T, Nakamura K, Obata A, Oki A, Ono Y, Otani M, Shimizu I, Shirai J, Suzuki A, Takemoto Y, Tamae K, Ueshima K, Watanabe H, Xu BD, Yamada S, Yoshida H, Kozlov A, Yoshida S, Banks TI, Freedman SJ, Fujikawa BK, Han K, O'Donnell T, Berger BE, Efremenko Y, Karwowski HJ, Markoff DM, Tornow W, Detwiler JA, Enomoto S, Decowski MP. Limit on neutrinoless ββ decay of 136Xe from the first phase of KamLAND-Zen and comparison with the positive claim in 76Ge. Phys Rev Lett 2013; 110:062502. [PMID: 23432237 DOI: 10.1103/physrevlett.110.062502] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2012] [Indexed: 06/01/2023]
Abstract
We present results from the first phase of the KamLAND-Zen double-beta decay experiment, corresponding to an exposure of 89.5 kg yr of (136)Xe. We obtain a lower limit for the neutrinoless double-beta decay half-life of T(1/2)(0ν)>1.9×10(25) yr at 90% C.L. The combined results from KamLAND-Zen and EXO-200 give T(1/2)(0ν)>3.4×10(25) yr at 90% C.L., which corresponds to a Majorana neutrino mass limit of <m(ββ)> <(120-250) meV based on a representative range of available matrix element calculations. Using those calculations, this result excludes the Majorana neutrino mass range expected from the neutrinoless double-beta decay detection claim in (76)Ge, reported by a part of the Heidelberg-Moscow Collaboration, at more than 97.5% C.L.
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Affiliation(s)
- A Gando
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
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Abe K, Abgrall N, Aihara H, Akiri T, Albert JB, Andreopoulos C, Aoki S, Ariga A, Ariga T, Assylbekov S, Autiero D, Barbi M, Barker GJ, Barr G, Bass M, Batkiewicz M, Bay F, Bentham SW, Berardi V, Berger BE, Berkman S, Bertram I, Beznosko D, Bhadra S, Blaszczyk FDM, Blondel A, Bojechko C, Boyd S, Bravar A, Bronner C, Brook-Roberge DG, Buchanan N, Calland RG, Caravaca Rodríguez J, Cartwright SL, Castillo R, Catanesi MG, Cervera A, Cherdack D, Christodoulou G, Clifton A, Coleman J, Coleman SJ, Collazuol G, Connolly K, Curioni A, Dabrowska A, Danko I, Das R, Davis S, Day M, de André JPAM, de Perio P, De Rosa G, Dealtry T, Densham C, Di Lodovico F, Di Luise S, Dobson J, Duboyski T, Dufour F, Dumarchez J, Dytman S, Dziewiecki M, Dziomba M, Emery S, Ereditato A, Escudero L, Esposito LS, Finch AJ, Frank E, Friend M, Fujii Y, Fukuda Y, Galymov V, Gaudin A, Giffin S, Giganti C, Gilje K, Golan T, Gomez-Cadenas JJ, Gonin M, Grant N, Gudin D, Guzowski P, Hadley DR, Haesler A, Haigh MD, Hansen D, Hara T, Hartz M, Hasegawa T, Hastings NC, Hayato Y, Hearty C, Helmer RL, Hignight J, Hillairet A, Himmel A, Hiraki T, Holeczek J, Horikawa S, Huang K, Hyndman A, Ichikawa AK, Ieki K, Ieva M, Ikeda M, Imber J, Insler J, Ishida T, Ishii T, Ives SJ, Iyogi K, Izmaylov A, Jamieson B, Johnson RA, Jo JH, Jonsson P, Joo KK, Jover-Manas GV, Jung CK, Kaji H, Kajita T, Kakuno H, Kameda J, Kanazawa Y, Karlen D, Karpikov I, Kearns E, Khabibullin M, Khanam F, Khotjantsev A, Kielczewska D, Kikawa T, Kilinski A, Kim JY, Kim J, Kim SB, Kirby B, Kisiel J, Kitching P, Kobayashi T, Kogan G, Konaka A, Kormos LL, Korzenev A, Koseki K, Koshio Y, Kowalik K, Kreslo I, Kropp W, Kubo H, Kudenko Y, Kumaratunga S, Kurjata R, Kutter T, Lagoda J, Laihem K, Laing A, Laveder M, Lawe M, Lee KP, Licciardi C, Lim IT, Lindner T, Lister C, Litchfield RP, Longhin A, Lopez GD, Ludovici L, Macaire M, Magaletti L, Mahn K, Malek M, Manly S, Marchionni A, Marino AD, Marteau J, Martin JF, Maruyama T, Marzec J, Masliah P, Mathie EL, Matsumura C, Matsuoka K, Matveev V, Mavrokoridis K, Mazzucato E, McCauley N, McFarland KS, McGrew C, McLachlan T, Messina M, Metelko C, Mezzetto M, Mijakowski P, Miller CA, Minamino A, Mineev O, Mine S, Missert A, Miura M, Monfregola L, Moriyama S, Mueller TA, Murakami A, Murdoch M, Murphy S, Myslik J, Nagasaki T, Nakadaira T, Nakahata M, Nakai T, Nakajima K, Nakamura K, Nakayama S, Nakaya T, Nakayoshi K, Naples D, Nicholls TC, Nielsen C, Nishikawa K, Nishimura Y, O’Keeffe HM, Obayashi Y, Ohta R, Okumura K, Oryszczak W, Oser SM, Otani M, Owen RA, Oyama Y, Pac MY, Palladino V, Paolone V, Payne D, Pearce GF, Perevozchikov O, Perkin JD, Pinzon Guerra ES, Plonski P, Poplawska E, Popov B, Posiadala M, Poutissou JM, Poutissou R, Przewlocki P, Quilain B, Radicioni E, Ratoff PN, Ravonel M, Rayner MA, Reeves M, Reinherz-Aronis E, Retiere F, Rodrigues PA, Rondio E, Rossi B, Roth S, Rubbia A, Ruterbories D, Sacco R, Sakashita K, Sánchez F, Scantamburlo E, Scholberg K, Schwehr J, Scott M, Scully DI, Seiya Y, Sekiguchi T, Sekiya H, Shibata M, Shiozawa M, Short S, Shustrov Y, Sinclair P, Smith B, Smith RJ, Smy M, Sobczyk JT, Sobel H, Sorel M, Southwell L, Stamoulis P, Steinmann J, Still B, Sulej R, Suzuki A, Suzuki K, Suzuki SY, Suzuki Y, Szeglowski T, Szeptycka M, Tacik R, Tada M, Takahashi S, Takeda A, Takeuchi Y, Tanaka HA, Tanaka M, Tanaka MM, Taylor IJ, Terhorst D, Terri R, Thompson LF, Thorley A, Tobayama S, Toki W, Tomura T, Totsuka Y, Touramanis C, Tsukamoto T, Tzanov M, Uchida Y, Ueno K, Vacheret A, Vagins M, Vasseur G, Wachala T, Waldron AV, Walter CW, Wang J, Wark D, Wascko MO, Weber A, Wendell R, Wikström G, Wilkes RJ, Wilking MJ, Wilkinson C, Williamson Z, Wilson JR, Wilson RJ, Wongjirad T, Yamada Y, Yamamoto K, Yanagisawa C, Yano T, Yen S, Yershov N, Yokoyama M, Yuan T, Zalewska A, Zambelli L, Zaremba K, Ziembicki M, Zimmerman ED, Zito M, Żmuda J. T2K neutrino flux prediction. Int J Clin Exp Med 2013. [DOI: 10.1103/physrevd.87.012001 10.1103/physrevd.87.019902] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Otani M, Nozaki M, Kobayashi M, Goto H, Tawada K, Waguri-Nagaya Y, Okamoto H, Iguchi H, Watanabe N, Otsuka T. Comparative risk of common peroneal nerve injury in far anteromedial portal drilling and transtibial drilling in anatomical double-bundle ACL reconstruction. Knee Surg Sports Traumatol Arthrosc 2012; 20:838-43. [PMID: 21830114 DOI: 10.1007/s00167-011-1632-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [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: 12/18/2010] [Accepted: 07/18/2011] [Indexed: 12/12/2022]
Abstract
PURPOSE The purpose of this study was to investigate the risk of common peroneal nerve injury in FM drilling as compared to transtibial drilling in anatomical double-bundle ACL reconstruction. METHODS Ten cadaveric knees without ligament injury or significant arthritis were used for this study. Knees were secured at 90° and 120° of flexion. In transtibial drilling groups, a guide pin was drilled through either the anteromedial bundle (AMB) or posterolateral bundle (PLB) tibial insertion site to either the AMB or PLB femoral insertion site (tibial insertion site-femoral insertion site: AM-AM, PL-PL, PL-AM and AM-PL). In FM drilling groups (FM-AM and FM-PL),the pin was drilled at the AMB or PLB femoral insertion site through the FM. We measured the shortest distance between the point at which the pin ran through the lateral cortex of the femur and the ipsilateral common peroneal nerve at a knee flexion of 90° and 120°. RESULTS At a knee flexion of 90°, the shortest mean distance to the common peroneal nerve was 15.3 mm in the FM-PL group, 13.4 mm in the FM-AM group, 27.9 mm in the PL-PL group, 30.8 mm in the AM-AM group, 37.8 mm in the PL-AM group and 29.5 mm in the AM-PL group. At a knee of flexion 120°, the mean distance was 17.3 mm in the FM-PL group, 18.1 mm in the FM-AM group, 32.2 mm in the PL-PL group, 36.6 mm in the AM-AM group, 38.0 mm in the PL-AM group and 35.2 mm in the AM-PL group. Significant differences were observed between 90° and 120° of knee flexion in the FM-AM, PL-PL, AM-AM and AM-PL groups (P < 0.05). Significant differences were observed at flex 90° between the FM-AM group and AM-AM group, and between the FM-AM group and PL-AM group. Significant differences were observed at flex 120° between the FM-AM group and AM-AM group, between the FM-AM group and PL-AM group and between the FM-PL group and AM-PL group. CONCLUSION The distance to the peroneal nerve in FM drilling was significantly longer at 120° than at 90° of knee flexion. Therefore, the risk of peroneal injury using FM drilling should decrease at a higher angle of knee flexion.
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Affiliation(s)
- M Otani
- Department of Orthopedic Surgery, Nagoya City University Graduate School of Medical Sciences, 1-Kawasumi, Mizuho-Cho, Mizuho-Ku, Nagoya, 467-8601, Japan
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Yokoyama T, Konno O, Nakamura Y, Kihara Y, Jojima Y, Hama K, Iwamoto H, Shimazu M, Otani M. Interstitial Fibrosis and Tubular Atrophy on Protocol Biopsies at 1 Year After Renal Transplantation. Transplant Proc 2012; 44:607-9. [DOI: 10.1016/j.transproceed.2011.11.044] [Citation(s) in RCA: 2] [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: 10/28/2022]
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Hashimoto M, Chishima M, Itoh K, Kayama M, Otani M, Arai Y. A Basic Study on P300 Event-Related Potentials Evoked by Simultaneous Presentation of Visual and Auditory Stimuli for the Communication Interface. Iperception 2011. [DOI: 10.1068/ic785] [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: 10/23/2022] Open
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Abe K, Abgrall N, Ajima Y, Aihara H, Albert JB, Andreopoulos C, Andrieu B, Aoki S, Araoka O, Argyriades J, Ariga A, Ariga T, Assylbekov S, Autiero D, Badertscher A, Barbi M, Barker GJ, Barr G, Bass M, Bay F, Bentham S, Berardi V, Berger BE, Bertram I, Besnier M, Beucher J, Beznosko D, Bhadra S, Blaszczyk FDMM, Blondel A, Bojechko C, Bouchez J, Boyd SB, Bravar A, Bronner C, Brook-Roberge DG, Buchanan N, Budd H, Calvet D, Cartwright SL, Carver A, Castillo R, Catanesi MG, Cazes A, Cervera A, Chavez C, Choi S, Christodoulou G, Coleman J, Coleman W, Collazuol G, Connolly K, Curioni A, Dabrowska A, Danko I, Das R, Davies GS, Davis S, Day M, De Rosa G, de André JPAM, de Perio P, Delbart A, Densham C, Di Lodovico F, Di Luise S, Dinh Tran P, Dobson J, Dore U, Drapier O, Dufour F, Dumarchez J, Dytman S, Dziewiecki M, Dziomba M, Emery S, Ereditato A, Escudero L, Esposito LS, Fechner M, Ferrero A, Finch AJ, Frank E, Fujii Y, Fukuda Y, Galymov V, Gannaway FC, Gaudin A, Gendotti A, George MA, Giffin S, Giganti C, Gilje K, Golan T, Goldhaber M, Gomez-Cadenas JJ, Gonin M, Grant N, Grant A, Gumplinger P, Guzowski P, Haesler A, Haigh MD, Hamano K, Hansen C, Hansen D, Hara T, Harrison PF, Hartfiel B, Hartz M, Haruyama T, Hasegawa T, Hastings NC, Hastings S, Hatzikoutelis A, Hayashi K, Hayato Y, Hearty C, Helmer RL, Henderson R, Higashi N, Hignight J, Hirose E, Holeczek J, Horikawa S, Hyndman A, Ichikawa AK, Ieki K, Ieva M, Iida M, Ikeda M, Ilic J, Imber J, Ishida T, Ishihara C, Ishii T, Ives SJ, Iwasaki M, Iyogi K, Izmaylov A, Jamieson B, Johnson RA, Joo KK, Jover-Manas GV, Jung CK, Kaji H, Kajita T, Kakuno H, Kameda J, Kaneyuki K, Karlen D, Kasami K, Kato I, Kearns E, Khabibullin M, Khanam F, Khotjantsev A, Kielczewska D, Kikawa T, Kim J, Kim JY, Kim SB, Kimura N, Kirby B, Kisiel J, Kitching P, Kobayashi T, Kogan G, Koike S, Konaka A, Kormos LL, Korzenev A, Koseki K, Koshio Y, Kouzuma Y, Kowalik K, Kravtsov V, Kreslo I, Kropp W, Kubo H, Kudenko Y, Kulkarni N, Kurjata R, Kutter T, Lagoda J, Laihem K, Laveder M, Lee KP, Le PT, Levy JM, Licciardi C, Lim IT, Lindner T, Litchfield RP, Litos M, Longhin A, Lopez GD, Loverre PF, Ludovici L, Lux T, Macaire M, Mahn K, Makida Y, Malek M, Manly S, Marchionni A, Marino AD, Marteau J, Martin JF, Maruyama T, Maryon T, Marzec J, Masliah P, Mathie EL, Matsumura C, Matsuoka K, Matveev V, Mavrokoridis K, Mazzucato E, McCauley N, McFarland KS, McGrew C, McLachlan T, Messina M, Metcalf W, Metelko C, Mezzetto M, Mijakowski P, Miller CA, Minamino A, Mineev O, Mine S, Missert AD, Mituka G, Miura M, Mizouchi K, Monfregola L, Moreau F, Morgan B, Moriyama S, Muir A, Murakami A, Murdoch M, Murphy S, Myslik J, Nakadaira T, Nakahata M, Nakai T, Nakajima K, Nakamoto T, Nakamura K, Nakayama S, Nakaya T, Naples D, Navin ML, Nelson B, Nicholls TC, Nishikawa K, Nishino H, Nowak JA, Noy M, Obayashi Y, Ogitsu T, Ohhata H, Okamura T, Okumura K, Okusawa T, Oser SM, Otani M, Owen RA, Oyama Y, Ozaki T, Pac MY, Palladino V, Paolone V, Paul P, Payne D, Pearce GF, Perkin JD, Pettinacci V, Pierre F, Poplawska E, Popov B, Posiadala M, Poutissou JM, Poutissou R, Przewlocki P, Qian W, Raaf JL, Radicioni E, Ratoff PN, Raufer TM, Ravonel M, Raymond M, Retiere F, Robert A, Rodrigues PA, Rondio E, Roney JM, Rossi B, Roth S, Rubbia A, Ruterbories D, Sabouri S, Sacco R, Sakashita K, Sánchez F, Sarrat A, Sasaki K, Scholberg K, Schwehr J, Scott M, Scully DI, Seiya Y, Sekiguchi T, Sekiya H, Shibata M, Shimizu Y, Shiozawa M, Short S, Siyad M, Smith RJ, Smy M, Sobczyk JT, Sobel H, Sorel M, Stahl A, Stamoulis P, Steinmann J, Still B, Stone J, Strabel C, Sulak LR, Sulej R, Sutcliffe P, Suzuki A, Suzuki K, Suzuki S, Suzuki SY, Suzuki Y, Suzuki Y, Szeglowski T, Szeptycka M, Tacik R, Tada M, Takahashi S, Takeda A, Takenaga Y, Takeuchi Y, Tanaka K, Tanaka HA, Tanaka M, Tanaka MM, Tanimoto N, Tashiro K, Taylor I, Terashima A, Terhorst D, Terri R, Thompson LF, Thorley A, Toki W, Tomaru T, Totsuka Y, Touramanis C, Tsukamoto T, Tzanov M, Uchida Y, Ueno K, Vacheret A, Vagins M, Vasseur G, Wachala T, Walding JJ, Waldron AV, Walter CW, Wanderer PJ, Wang J, Ward MA, Ward GP, Wark D, Wascko MO, Weber A, Wendell R, West N, Whitehead LH, Wikström G, Wilkes RJ, Wilking MJ, Wilson JR, Wilson RJ, Wongjirad T, Yamada S, Yamada Y, Yamamoto A, Yamamoto K, Yamanoi Y, Yamaoka H, Yanagisawa C, Yano T, Yen S, Yershov N, Yokoyama M, Zalewska A, Zalipska J, Zambelli L, Zaremba K, Ziembicki M, Zimmerman ED, Zito M, Żmuda J. Indication of electron neutrino appearance from an accelerator-produced off-axis muon neutrino beam. Phys Rev Lett 2011; 107:041801. [PMID: 21866992 DOI: 10.1103/physrevlett.107.041801] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2011] [Indexed: 05/31/2023]
Abstract
The T2K experiment observes indications of ν(μ) → ν(e) appearance in data accumulated with 1.43×10(20) protons on target. Six events pass all selection criteria at the far detector. In a three-flavor neutrino oscillation scenario with |Δm(23)(2)| = 2.4×10(-3) eV(2), sin(2)2θ(23) = 1 and sin(2)2θ(13) = 0, the expected number of such events is 1.5±0.3(syst). Under this hypothesis, the probability to observe six or more candidate events is 7×10(-3), equivalent to 2.5σ significance. At 90% C.L., the data are consistent with 0.03(0.04) < sin(2)2θ(13) < 0.28(0.34) for δ(CP) = 0 and a normal (inverted) hierarchy.
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Affiliation(s)
- K Abe
- University of Tokyo, Institute for Cosmic Ray Research, Kamioka Observatory, Kamioka, Japan
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Otani M, Takimoto Y, Moriya J, Yoshiuchi K, Akabayashi A. Plasma intact fibroblast growth factor 23 levels in women with bulimia nervosa: A cross-sectional pilot study. Biopsychosoc Med 2011; 5:7. [PMID: 21682868 PMCID: PMC3141368 DOI: 10.1186/1751-0759-5-7] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2011] [Accepted: 06/17/2011] [Indexed: 12/05/2022] Open
Abstract
Fibroblast growth factor (FGF) 23, a circulating 26-kDa peptide produced by osteogenic cells, is a novel phosphaturic factor. In our previous study, binge-eating/purging type anorexia nervosa (AN-BP) patients had elevated plasma intact FGF23 (iFGF23) levels, while restricting type (AN-R) patients had plasma iFGF23 levels similar to healthy controls. Although bulimia nervosa (BN) patients as well as some patients with AN-BP regularly engage in binge eating, there have been no studies regarding plasma iFGF23 levels in BN patients. Therefore, this study was performed to determine plasma iFGF23 concentrations in BN patients and healthy controls. The study population consisted of 13 female BN patients and 11 healthy female controls. Blood samples were collected from all subjects after overnight fasting. Plasma iFGF23 was measured using an ELISA kit in a cross-sectional manner. The two-tailed Mann-Whitney U-test was used to assess differences between BN patients and healthy controls. In addition, BN patients were divided into two groups based on questionnaire-reported binge eating frequency immediately prior to participation in this study: high frequency of binge eating (once a week or more; HF group; n = 8) and low frequency of binge eating (less than once a week; LF group; n = 5). Two-tailed Mann-Whitney U-test with Bonferroni's correction was performed after the Kruskal-Wallis test to assess differences between HF group, LF group, and healthy controls. Median (quartiles) plasma iFGF23 levels were greater in BN patients (35.5 [14.8-65.0] pg/ml) than in controls (3.8 [not detected-5.3] pg/ml; p = 0.002). In addition, median (quartiles) plasma iFGF23 levels were greater in the HF group (62.3 [44.4-73.4] pg/ml) than in controls (p < 0.001) and in the LF group (12.9 [not detected-30.3] pg/ml; p = 0.011), while there were no differences between the LF group and controls (p = 0.441). This is the first study to show that BN patients have elevated plasma iFGF23 levels. Moreover, this study showed that BN patients with a high frequency of binge eating have elevated plasma iFGF23 levels, while iFGF23 levels are similar to healthy controls in those with a low frequency of binge eating. Plasma iFGF23 level may be a suitable indicator of binge eating in BN patients.
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Affiliation(s)
- Makoto Otani
- Department of Stress Sciences and Psychosomatic Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
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Chishima M, Otani M, Kayama M, Hashimoto M, Itoh K, Arai Y. Basic Research for Development of a Communication Support Device Using Air-Conducted Sound Localization. Iperception 2011. [DOI: 10.1068/ic804] [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: 10/27/2022] Open
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Furuta Y, Horiguchi M, Sugaru E, Ono-Kishino M, Otani M, Sakai M, Masui Y, Tsuchida A, Sato Y, Takubo K, Hochigai H, Kimura H, Nakahira H, Nakagawa T, Taiji M. Chronic administration of DSP-7238, a novel, potent, specific and substrate-selective DPP IV inhibitor, improves glycaemic control and beta-cell damage in diabetic mice. Diabetes Obes Metab 2010; 12:421-30. [PMID: 20415690 DOI: 10.1111/j.1463-1326.2009.01180.x] [Citation(s) in RCA: 14] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
AIMS The purpose of this study is to assess the in vitro enzyme inhibition profile of DSP-7238, a novel non-cyanopyrrolidine dipeptidyl peptidase (DPP) IV inhibitor and to evaluate the acute and chronic effects of this compound on glucose metabolism in two different mouse models of type 2 diabetes. METHODS The in vitro enzyme inhibition profile of DSP-7238 was assessed using plasma and recombinant enzymes including DPP IV, DPP II, DPP8, DPP9 and fibroblast activation protein alpha (FAPalpha) with fluorogenic substrates. The inhibition type was evaluated based on the Lineweaver-Burk plot. Substrate selectivity of DSP-7238 and comparator DPP IV inhibitors (vildagliptin, sitagliptin, saxagliptin and linagliptin) was evaluated by mass spectrometry based on the changes in molecular weight of peptide substrates caused by release of N-terminal dipeptides. In the in vivo experiments, high-fat diet-induced obese (DIO) mice were subjected to oral glucose tolerance test (OGTT) following a single oral administration of DSP-7238. To assess the chronic effects of DSP-7238 on glycaemic control and pancreatic beta-cell damage, DSP-7238 was administered for 11 weeks to mice made diabetic by a combination of high-fat diet (HFD) and a low-dose of streptozotocin (STZ). After the dosing period, HbA1c was measured and pancreatic damage was evaluated by biological and histological analyses. RESULTS DSP-7238 and sitagliptin both competitively inhibited recombinant human DPP IV (rhDPP IV) with K(i) values of 0.60 and 2.1 nM respectively. Neither vildagliptin nor saxagliptin exhibited competitive inhibition of rhDPP IV. DSP-7238 did not inhibit DPP IV-related enzymes including DPP8, DPP9, DPP II and FAPalpha, whereas vildagliptin and saxagliptin showed inhibition of DPP8 and DPP9. Inhibition of glucagon-like peptide-1 (GLP-1) degradation by DSP-7238 was apparently more potent than its inhibition of chemokine (C-X-C motif) ligand 10 (IP-10) or chemokine (C-X-C motif) ligand 12 (SDF-1alpha) degradation. In contrast, vildagliptin and saxagliptin showed similar degree of inhibition of degradation for all the substrates tested. Compared to treatment with the vehicle, single oral administration of DSP-7238 dose-dependently decreased plasma DPP IV activity and improved glucose tolerance in DIO mice. In addition, DSP-7238 significantly decreased HbA1c and ameliorated pancreatic damage following 11 weeks of chronic treatment in HFD/STZ mice. CONCLUSIONS We have shown in this study that DSP-7238 is a potent DPP IV inhibitor that has high specificity for DPP IV and substrate selectivity against GLP-1. We have also found that chronic treatment with DSP-7238 improves glycaemic control and ameliorates beta-cell damage in a mouse model with impaired insulin sensitivity and secretion. These findings indicate that DSP-7238 may be a new therapeutic agent for the treatment of type 2 diabetes.
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Affiliation(s)
- Y Furuta
- Pharmacology Research Laboratories, Dainippon Sumitomo Pharma Co. Ltd., Konohana-Ku, Osaka, Japan
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Ando S, Otani M, Moritake K. Usefulness of spinal drainage for post-traumatic external hydrocephalus: report of two cases. J Clin Neurosci 2010; 4:236-40. [PMID: 18638961 DOI: 10.1016/s0967-5868(97)90079-5] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/1994] [Accepted: 02/28/1995] [Indexed: 10/26/2022]
Abstract
An 8-year-old girl presented with symptoms of increased intracranial pressure on the 18th day after removal of an occipital epidural haematoma. A 69-year-old woman exhibited the same symptoms on the 6th day after the removal of a left frontal subdural haematoma. Computed tomography (CT) revealed that both patients were suffering from external hydrocephalus. Spinal drainage, maintained for 18 days in the former case and for 7 days in the latter, not only relieved those symptoms but also cured the external hydrocephalus. Recurrence of external hydrocephalus has not been observed in either case for several years since discontinuation of spinal drainage. Usefulness of spinal drainage for post-traumatic external hydrocephalus is discussed.
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Affiliation(s)
- S Ando
- Department of Neurosurgery, Unnan General Hospital, Shimane Prefecture, Japan
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Otani M, Yamamoto M, Harada M, Otsuki M. Effect of long- and short-term treatments with pravastatin on diabetes mellitus and pancreatic fibrosis in the Otsuka-Long-Evans-Tokushima fatty rat. Br J Pharmacol 2010; 159:462-73. [PMID: 20015084 PMCID: PMC2825367 DOI: 10.1111/j.1476-5381.2009.00548.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2009] [Revised: 06/16/2009] [Accepted: 09/17/2009] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND AND PURPOSE The effects of statins on diabetes mellitus (DM) are controversial, and their effects on pancreatic fibrosis are poorly defined. We investigated the effect of long- and short-term treatments with pravastatin on the development of DM and pancreatic fibrosis in DM-prone Otsuka-Long-Evans-Tokushima Fatty (OLETF) rats. EXPERIMENTAL APPROACH Male OLETF rats were divided into four groups at 12 weeks of age. The first group received a standard rat diet until the end of the experimental period at age 80 weeks. The second group was given a diet containing 0.05% pravastatin from 12 weeks of age, before the onset of DM and pancreatic fibrosis, and the third group was given the same pravastatin diet from 28 weeks of age, after the onset of DM and pancreatic fibrosis, until age 80 weeks. The fourth group received the same pravastatin diet only for 16 weeks, from 12 to 28 weeks of age, and switched to a standard diet. Progressions of DM and pancreatic fibrosis were evaluated. KEY RESULTS Long-term treatments with pravastatin, either from 12 or 28 weeks of age, decreased serum glucose concentration and fibrotic area, elevated superoxide dismutase activity and down-regulated transforming growth factor-beta1 mRNA in the pancreas. In contrast, after a short-term treatment with pravastatin, these parameters markedly deteriorated after its cessation. CONCLUSIONS AND IMPLICATIONS The results suggest that long-term treatment with pravastatin improves DM and pancreatic fibrosis via anti-oxidative and anti-fibrotic properties, whereas cessation of pravastatin abolishes these beneficial effects, and accelerates DM and pancreatic fibrosis.
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Affiliation(s)
- M Otani
- Department of Gastroenterology and Metabolism, University of Occupational and Environmental Health, School of Medicine, Kitakyushu, Japan
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Abstract
This paper investigates the source-distance dependency of head-related transfer functions (HRTFs) on the horizontal and median sagittal planes using the boundary-element method and a dummy head scanned with laser and computer tomography scanners. First, the HRTF spectra are compared among various source positions in a head-centered coordinate system, confirming that the major HRTF spectral features vary with source distance as stated in previous works. Furthermore, the HRTF spectra are compared in an ear-centered coordinate system, revealing how the outer ear angle of incidence affects the source-distance dependency of the HRTFs. Next, the comparison across coordinate systems reveals that the source-distance dependency of the ipsilateral HRTFs on the horizontal plane is mainly attributable to the outer ear angle of incidence, whereas the contralateral HRTFs vary with the source distance mainly due to the head's presence. Finally, results also show that, in an ear-centered coordinate system, the ipsilateral HRTFs do not depend strongly on a source distance greater than 0.2 m from the center of the head, whereas the contralateral HRTFs depend on source distance less than 1.8 m. Results also show that HRTFs on the median sagittal plane depend on a source distance of less than 0.4 m.
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Affiliation(s)
- Makoto Otani
- Faculty of Engineering, Toyama Prefectural University, Kurokawa 5180, Imizu, Toyama 939-0398, Japan.
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Lu ZQJ, Lowhorn ND, Wong-Ng W, Zhang W, Thomas EL, Otani M, Green ML. Statistical Analysis of a Round-Robin Measurement Survey of Two Candidate Materials for a Seebeck Coefficient Standard Reference Material. J Res Natl Inst Stand Technol 2009; 114:37-55. [PMID: 27504212 PMCID: PMC4651612 DOI: 10.6028/jres.114.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 11/28/2008] [Indexed: 06/04/2023]
Abstract
In an effort to develop a Standard Reference Material (SRM™) for Seebeck coefficient, we have conducted a round-robin measurement survey of two candidate materials-undoped Bi2Te3 and Constantan (55 % Cu and 45 % Ni alloy). Measurements were performed in two rounds by twelve laboratories involved in active thermoelectric research using a number of different commercial and custom-built measurement systems and techniques. In this paper we report the detailed statistical analyses on the interlaboratory measurement results and the statistical methodology for analysis of irregularly sampled measurement curves in the interlaboratory study setting. Based on these results, we have selected Bi2Te3 as the prototype standard material. Once available, this SRM will be useful for future interlaboratory data comparison and instrument calibrations.
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Affiliation(s)
- Z. Q. J. Lu
- National Institute of Standards and Technology, Gaithersburg, MD 20899
| | - N. D. Lowhorn
- National Institute of Standards and Technology, Gaithersburg, MD 20899
| | - W. Wong-Ng
- National Institute of Standards and Technology, Gaithersburg, MD 20899
| | - W. Zhang
- National Institute of Standards and Technology, Gaithersburg, MD 20899
| | - E. L. Thomas
- National Institute of Standards and Technology, Gaithersburg, MD 20899
| | - M. Otani
- National Institute of Standards and Technology, Gaithersburg, MD 20899
| | - M. L. Green
- National Institute of Standards and Technology, Gaithersburg, MD 20899
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De Mey F, Reijniers J, Peremans H, Otani M, Firzlaff U. Simulated head related transfer function of the phyllostomid bat Phyllostomus discolor. J Acoust Soc Am 2008; 124:2123-2132. [PMID: 19062853 DOI: 10.1121/1.2968703] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
UNLABELLED This paper presents a calculation of the head related transfer function (HRTF) for the frontal hemisphere of the phyllostomid bat Phyllostomus discolor using an acoustic field simulation tool based on the boundary element method. From the calculated HRTF results, binaural interaural intensity differences (IIDs) are derived. THE RESULTS Region of highest sensitivity, HRTF patterns, and IID patterns are shown to be in good agreement with earlier experimental measurements on other specimens of the same bat species, i.e., the differences are within the interspecies variability range. Next, it is argued that the proposed simulation method offers distinct advantages over acoustic measurements on real bat specimens. To illustrate this, it is shown how computer manipulation of the virtual morphology model allows a more detailed comprehension of bat spatial hearing by investigating the effects of different head parts on the HRTF. From this analysis it is concluded that for this species the pinna has a significantly larger effect on the HRTF and IID patterns than the head itself. This conclusion argues in favor of a series of recent simulation studies based on pinna morphology only [R. Muller, J. Acoust. Soc. Am. 116, 3701-3712 (2004); Muller et al., ibid 119, 4083-4092 (2006)].
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Affiliation(s)
- F De Mey
- Department Milieu, Technologie en Technologiemanagement, Universiteit Antwerpen, Prinsstraat 13, 2000 Antwerpen, Belgium.
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Thomas E, Otani M, Liu G, Wong-Ng W. Compositional analysis of LaMnO3–LaCoO3–LaNiO3thin-film thermoelectric property diagrams. Acta Crystallogr A 2008. [DOI: 10.1107/s010876730808207x] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Otani M, Takimoto Y, Moriya J, Yoshiuchi K, Akabayashi A. Plasma intact fibroblast growth factor 23 levels in women with anorexia nervosa. Biopsychosoc Med 2008; 2:10. [PMID: 18412981 PMCID: PMC2346464 DOI: 10.1186/1751-0759-2-10] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2007] [Accepted: 04/16/2008] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Fibroblast growth factor (FGF)23 is a novel phosphaturic factor associated with inorganic phosphate homeostasis. Previous human studies have shown that serum FGF23 levels increase in response to a high phosphate diet. For anorexia nervosa (AN) patients, inorganic phosphate homeostasis is important in the clinical course, such as in refeeding syndrome. The purpose of this study was to determine plasma levels of intact FGF23 (iFGF23) in restricting-type AN (AN-R) patients, binge-eating/purging-type AN (AN-BP) patients, and healthy controls. METHODS The subjects consisted of 6 female AN-R patients, 6 female AN-BP patients, and 11 healthy female controls; both inpatients and outpatients were included. Plasma iFGF23, 1,25-dihydroxyvitamin D (1,25-(OH)2D), and 25-hydroxyvitamin D (25-OHD) levels were measured. Data are presented as the median and the range. A two-tailed Mann-Whitney U-test with Bonferroni correction was used to assess differences among the three groups, and a value of p < 0.017 was considered statistically significant. RESULTS There were no differences between AN-R patients and controls in the iFGF23 and 1,25-(OH)2D levels. In AN-BP patients, the iFGF23 level (41.3 pg/ml; range, 6.1-155.5 pg/ml) was significantly higher than in controls (3.8 pg/ml; range, not detected-21.3 pg/ml; p = 0.001), and the 1,25-(OH)2D was significantly lower in AN-BP patients (7.0 pg/ml; range, 4.2-33.7 pg/ml) than in controls (39.7 pg/ml; range, 6.3-58.5 pg/ml; p = 0.015). No differences in plasma 25-OHD levels were observed among the groups. CONCLUSION This preliminary study is the first to show that plasma iFGF23 levels are increased in AN-BP patients, and that these elevated plasma FGF23 levels might be related to the decrease in plasma 1,25-(OH)2D levels.
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Affiliation(s)
- Makoto Otani
- Department of Stress Sciences and Psychosomatic Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
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