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Tsutsui K, Nemoto M, Kono M, Sato T, Yoshizawa Y, Yumoto Y, Nakagawa R, Iwamoto T, Wada H, Sasaki T. GC-MS analysis of exhaled gas for fine detection of inflammatory diseases. Anal Biochem 2023; 671:115155. [PMID: 37059321 DOI: 10.1016/j.ab.2023.115155] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 04/04/2023] [Accepted: 04/12/2023] [Indexed: 04/16/2023]
Abstract
Exhaled gas analysis is a non-invasive test ideal for continuous monitoring of biological metabolic information. We analyzed the exhaled gas of patients with inflammatory diseases for trace gas components that could serve as biomarkers that enable early detection of inflammatory diseases and assessment of treatment efficacy. Furthermore, we examined the clinical potential of this method. We enrolled 34 patients with inflammatory disease and 69 healthy participants. Volatile components from exhaled gas were collected and analyzed by a gas chromatography-mass spectrometry system, and the data were examined for gender, age, inflammatory markers, and changes in markers before and after treatment. The data were tested for statistical significance through discriminant analysis by Volcano plot, Analysis of variance test, principal component analysis, and cluster analysis comparing healthy and patient groups. There were no significant differences in the trace components of exhaled gas by gender or age. However, we found differences in some components of the exhaled gas between healthy and untreated patients. In addition, after treatment, gas patterns including the patient-specific components changed to a state closer to the inflammation-free status. We identified trace components in the exhaled gas of patients with inflammatory diseases and found that some of these regressed after treatment.
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Affiliation(s)
- K Tsutsui
- Department of General Internal Medicine, Katsushika Medical Center, The Jikei University School of Medicine, Japan
| | - M Nemoto
- Department of General Internal Medicine, Katsushika Medical Center, The Jikei University School of Medicine, Japan.
| | - M Kono
- Institute of Clinical Medicine and Research, The Jikei University School of Medicine, Japan; Department of Laboratory Medicine, The Jikei University School of Medicine, Japan
| | - T Sato
- Institute of Clinical Medicine and Research, The Jikei University School of Medicine, Japan; Faculty of Pharmaceutical Sciences, Tokyo University of Science, Japan
| | - Y Yoshizawa
- Institute of Clinical Medicine and Research, The Jikei University School of Medicine, Japan
| | - Y Yumoto
- Institute of Clinical Medicine and Research, The Jikei University School of Medicine, Japan
| | | | - T Iwamoto
- Core Research Facilities for Basic Science, The Jikei University School of Medicine, Japan
| | - H Wada
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, Japan
| | - T Sasaki
- Institute of Clinical Medicine and Research, The Jikei University School of Medicine, Japan; Sasaki Institute, Sasaki Foundation, Japan
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Nishimura A, Kawahara M, Kawachi Y, Hasegawa J, Makino S, Kitami C, Nakano T, Otani T, Nemoto M, Hattori S, Nikkuni K. Totally laparoscopic resection of right-sided colon cancer using transvaginal specimen extraction with a 10-mm-long abdominal incision. Tech Coloproctol 2022; 26:755-760. [DOI: 10.1007/s10151-022-02636-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 05/01/2022] [Indexed: 11/24/2022]
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3
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Saito S, Ichihara Y, Yamada Y, Iizuka K, Nemoto M, Kikuchi N, Hattori H, Nunoda S, Niinami H. Clinical Strategy for Sudden Mechanical Failure of EVAHEART 1. J Heart Lung Transplant 2022. [DOI: 10.1016/j.healun.2022.01.1518] [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] Open
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4
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Tsuji M, Amiya E, Bujo C, Hara T, Saito A, Minatsuki S, Maki H, Ishida J, Hosoya Y, Hatano M, Imai H, Nemoto M, Kagami Y, Endo M, Kimura M, Ando M, Shimada S, Kinoshita O, Ono M, Komuro I. Carbon Monoxide Diffusing Capacity Predicts Cardiac Readmission in Patients Undergoing Left Ventricular Assist Device Implantation in Japan. ASAIO J 2021; 67:1111-1118. [PMID: 33470633 DOI: 10.1097/mat.0000000000001363] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
Carbon monoxide diffusion capacity (DLCO) is impaired in heart failure patients; however, its clinical impact has not been well investigated in the left ventricular assist device (LVAD) population. We explored the predictive value of preoperative DLCO in the survival and cardiac readmission rates after LVAD implantation. Seventy-six patients who received continuous-flow LVAD as bridge-to-transplant therapy from November 2007 to September 2018 and underwent pulmonary function test before LVAD implantation were included. The primary study endpoints were death and readmission for heart failure or arrhythmia (cardiac readmission). Patients were stratified into two groups according to the percent of predicted DLCO (%DLCO). Pulmonary vascular resistance (PVR) was equivocal between the groups preoperatively, whereas the low DLCO group (%DLCO < 80%) showed significantly high PVR postoperatively. The mortality rate was not different between the groups. The 2 year cardiac readmission rate was 33.5% in the low DLCO group and 8.7% in the high DLCO group (%DLCO ≥ 80%) (P = 0.028). The %DLCO was associated with cardiac readmission in univariate and multivariate analyses (hazard ratio: 4.32; 95% CI: 1.50-15.9; P = 0.005). Low %DLCO was associated with high PVR postoperatively and was a risk factor for cardiac readmission after LVAD implantation.
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Affiliation(s)
- Masaki Tsuji
- From the Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Eisuke Amiya
- From the Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
- Department of Therapeutic Strategy for Heart Failure, The University of Tokyo, Tokyo, Japan
| | - Chie Bujo
- From the Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Toru Hara
- From the Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Akihito Saito
- From the Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Shun Minatsuki
- From the Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hisataka Maki
- From the Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Junichi Ishida
- From the Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yumiko Hosoya
- From the Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
- Department of Therapeutic Strategy for Heart Failure, The University of Tokyo, Tokyo, Japan
| | - Masaru Hatano
- From the Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
- Department of Therapeutic Strategy for Heart Failure, The University of Tokyo, Tokyo, Japan
| | - Hiroko Imai
- Department of Organ Transplantation, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Mariko Nemoto
- Department of Organ Transplantation, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yukie Kagami
- Department of Organ Transplantation, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Miyoko Endo
- Department of Organ Transplantation, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Mitsutoshi Kimura
- Department of Cardiac Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Masahiko Ando
- Department of Cardiac Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Shogo Shimada
- Department of Cardiac Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Osamu Kinoshita
- Department of Cardiac Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Minoru Ono
- Department of Cardiac Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Issei Komuro
- From the Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
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Nemoto M, Prasoon P, Ichikawa H, Hanyu T, Kano Y, Muneoka Y, Usui K, Hirose Y, Miura K, Shimada Y, Nagahashi M, Sakata J, Ishikawa T, Tsuchida M, Wakai T. Primary lung squamous cell carcinoma and its association with gastric metastasis: A case report and literature review. Thorac Cancer 2020; 11:1708-1711. [PMID: 32212371 PMCID: PMC7262906 DOI: 10.1111/1759-7714.13410] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 03/09/2020] [Accepted: 03/09/2020] [Indexed: 11/27/2022] Open
Abstract
Nearly 50% of primary lung carcinoma patients present with distant metastasis at their first visit. However, gastrointestinal tract (GIT) metastasis is an infrequent impediment. Herein, we report a case of progressive dysphagia and epigastralgia as an initial manifestation of recurrence as gastric metastasis of primary lung squamous cell carcinoma (SCC) after curative surgery. A 64-year-old man was diagnosed with primary lung SCC of the right lower lobe, and underwent thoracoscopic lower lobectomy. One year after lobectomy, computed tomography (CT) scan showed a gastric fundal mass located in the gastric cardia which measured 5 cm. Endoscopic biopsies and histopathology subsequently confirmed that tumor was SCC. The patient then underwent proximal gastrectomy with resection of the diaphragmatic crus. Following surgery, histopathological examination revealed gastric metastasis from primary lung SCC. KEY POINTS: Gastric metastasis of primary lung carcinoma is one of the rarest phenomena. Gastrointestinal symptoms should raise suspicion of the presence of advanced metastatic disease with poor prognosis.
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Affiliation(s)
- Mariko Nemoto
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Pankaj Prasoon
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Hiroshi Ichikawa
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Takaaki Hanyu
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Yosuke Kano
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Yusuke Muneoka
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Kenji Usui
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Yuki Hirose
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Kohei Miura
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Yoshifumi Shimada
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Masayuki Nagahashi
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Jun Sakata
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Takashi Ishikawa
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Masanori Tsuchida
- Division of Thoracic and Cardiovascular Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Toshifumi Wakai
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
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Yamai D, Ichikawa H, Kano Y, Hanyu T, Ishikawa T, Usui K, Nemoto M, Hirose Y, Miura K, Nagahashi M, Shimada Y, Sakata J, Kobayashi T, Kameyama H, Wakai T. [A Case of Esophageal Primary Malignant Melanoma That Developed During the Follow-Up of Esophageal Melanocytosis]. Gan To Kagaku Ryoho 2019; 46:2012-2014. [PMID: 32157043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A 78-year-old woman was endoscopically followed up for benign melanocytosis in the middle thoracic esophagus that was detected 3 years prior. She presented with chest tightness, and an endoscopic examination revealed a protruding tumor at the melanotic lesion. She was histologically diagnosedwith an esophageal primary malignant melanoma. Computedtomography showedno metastatic lesions. She underwent minimally invasive esophagectomy with 2-fieldlymphad enectomy. Immunotherapy with nivolumab is ongoing for liver metastasis, which developed1 year and6 months after esophagectomy. Careful follow-up for esophageal melanocytosis is important for early diagnosis of esophageal primary malignant melanoma.
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Affiliation(s)
- Daisuke Yamai
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences
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Tsuji M, Amiya E, Hatano M, Nitta D, Maki H, Bujo C, Saito A, Hosoya Y, Minatsuki S, Hara T, Nemoto M, Kagami Y, Endo M, Kimura M, Kinoshita O, Nawata K, Morita H, Ono M, Komuro I. Abdominal skeletal muscle mass as a predictor of mortality in Japanese patients undergoing left ventricular assist device implantation. ESC Heart Fail 2019; 6:526-535. [PMID: 30929311 PMCID: PMC6487708 DOI: 10.1002/ehf2.12429] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Accepted: 02/15/2019] [Indexed: 12/25/2022] Open
Abstract
Aims We assessed preoperative muscle wasting in patients undergoing left ventricular assist device (LVAD) implantations using abdominal skeletal muscle images on computed tomography (CT) and explored the associations between the preoperative muscle wasting and clinical outcomes after LVAD implantation. Methods and results We retrospectively examined the records of 111 patients who underwent continuous‐flow LVAD implantations as bridge‐to‐transplant therapy from January 2010 to December 2016 at our institution. After 33 patients were excluded, the study cohort consisted of 78 individuals. CT images used to calculate the skeletal muscle index (SMI) at the third lumbar vertebra level were obtained before the LVAD implantation procedures. Patients were classified as having muscle wasting if their SMI fell into the lowest gender‐based tertile. The median SMI for the study patients was 37.6 cm2/m2. The SMI cut‐off values for the lowest tertiles were 36.7 cm2/m2 for men and 28.2 cm2/m2 for women, resulting in 26 patients (33.3%) with muscle wasting in this study. During the mean follow‐up of 738 ± 379 days, there were 10 deaths (12.8% mortality). Seven of the 26 patients with muscle wasting (26.9%) died, and 3 of the 52 patients without muscle wasting (5.8%) died. The times to all‐cause mortality were significantly different between patients with and without muscle wasting (P = 0.0094). Muscle wasting was found to be associated with mortality in univariate and multivariate Cox analyses (hazard ratio: 4.32; 95% CI: 1.19–20.2). Conclusions Preoperative muscle wasting was associated with a higher mortality in patients with LVAD. Assessment of the abdominal skeletal muscle area on CT prior to LVAD implantation can help predict mortality.
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Affiliation(s)
- Masaki Tsuji
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Eisuke Amiya
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Masaru Hatano
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-8655, Japan.,Department of Therapeutic Strategy for Heart Failure, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Daisuke Nitta
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Hisataka Maki
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Chie Bujo
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Akihito Saito
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Yumiko Hosoya
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Shun Minatsuki
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Toru Hara
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Mariko Nemoto
- Department of Organ Transplantation, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Yukie Kagami
- Department of Organ Transplantation, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Miyoko Endo
- Department of Organ Transplantation, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Mitsutoshi Kimura
- Department of Cardiac Surgery, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Osamu Kinoshita
- Department of Cardiac Surgery, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Kan Nawata
- Department of Cardiac Surgery, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Hiroyuki Morita
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Minoru Ono
- Department of Cardiac Surgery, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Issei Komuro
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-8655, Japan
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Nemoto M, Ichikawa H, Nagahashi M, Hanyu T, Ishikawa T, Kano Y, Muneoka Y, Wakai T. Phospho-Sphingosine Kinase 1 Expression in Lymphatic Spread of Esophageal Squamous Cell Carcinoma. J Surg Res 2018; 234:123-131. [PMID: 30527463 DOI: 10.1016/j.jss.2018.09.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 08/11/2018] [Accepted: 09/06/2018] [Indexed: 02/07/2023]
Abstract
BACKGROUND Lymphatic spread is the main mode of progression of esophageal squamous cell carcinoma (ESCC). Sphingosine-1-phosphate (S1P) is a pleiotropic bioactive lipid mediator, which produced by sphingosine kinase 1 (SphK1) activated by phosphorylation. The SphK1-S1P axis has a crucial role in lymphangiogenesis. However, the significance of phospho-SphK1 (pSphK1) in the progression of ESCC has not been fully investigated. MATERIALS AND METHODS We evaluated pSphK1 expression in 92 surgically resected tumor tissues of ESCC by the immunohistochemistry. Fifty-nine (64%) patients with moderate or strong expression and 33 (36%) with negative or weak expression were classified in the pSphK1-high and pSphK1-low groups, respectively. RESULTS Higher pathological N category (pN) was more frequently observed in the pSphK1-high group (P < 0.01). The median number of lymph node metastasis (pSphK1-high: 2 versus pSphK1-low: 0; P < 0.01), the proportion of patients with lymphatic invasion (69% versus 18%; P < 0.01) and that with intramural metastasis (27% versus 3%; P < 0.01) were significantly higher in the pSphK1-high group. The presence of lymphatic invasion (odds ratio [OR] 5.63; P < 0.01) and pN1-3 (OR 3.26; P = 0.04) were independently associated with high pSphK1 expression. The 5-y overall survival rate of the pSphK1-high group was significantly lower than that of the pSphK1-low group (50.8% versus 67.3%; P = 0.01). High pSphK1 expression was not identified as a significant independent prognostic factor. CONCLUSIONS We provide the first evidence of the association between high expression of pSphK1 and both lymphatic spread and patient outcomes in ESCC.
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Affiliation(s)
- Mariko Nemoto
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, Chuo-ku, Niigata, Japan
| | - Hiroshi Ichikawa
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, Chuo-ku, Niigata, Japan.
| | - Masayuki Nagahashi
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, Chuo-ku, Niigata, Japan
| | - Takaaki Hanyu
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, Chuo-ku, Niigata, Japan
| | - Takashi Ishikawa
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, Chuo-ku, Niigata, Japan
| | - Yosuke Kano
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, Chuo-ku, Niigata, Japan
| | - Yusuke Muneoka
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, Chuo-ku, Niigata, Japan
| | - Toshifumi Wakai
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, Chuo-ku, Niigata, Japan
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Otani T, Ichikawa H, Hanyu T, Ishikawa T, Sakai T, Nemoto M, Muneoka Y, Usui K, Sudo N, Kano Y, Nagahashi M, Sakata J, Kobayashi T, Kameyama H, Wakai T. [Chemoresistance in Microsatellite Instability-High Gastric Cancer-A Case Report]. Gan To Kagaku Ryoho 2018; 45:1895-1897. [PMID: 30692390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A 74-year-old woman with cT4aN2M0, cStage ⅢB gastric cancer underwent neoadjuvant chemotherapy comprising 2 courses of S-1 plus cisplatin, and the clinical response was determined as non-CR/non-PD according to RECIST ver 1.1. Although distal gastrectomy with D2 lymphadenectomy was planned, the tumor was considered as unresectable with peritoneal metastases during laparotomy. After the subsequent chemotherapy with 1 course of capecitabine plus cisplatin, tumor bleeding, and obstruction due to rapid tumor progression occurred. We performed palliative distal gastrectomy; however, the patient died 17 days after gastrectomy. A comprehensive genomic analysis using cancer-gene panel identified the tumor as a microsatellite instability-high(MSI-H). Recently post hoc analysis of the large-scale clinical trials showed no clinical benefit of perioperative chemotherapy in MSI-H gastric cancer. MSI status has a potential to optimize the perioperative treatment strategy in gastric cancer.
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Affiliation(s)
- Takahiro Otani
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences
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Okubo Y, Nemoto M, Osuka Y, Jung S, Seino S, Figueroa R, Vinyes-Pares G, Offord EA, Shevlyakova M, Breuille D, Tanaka K. Development of the Nutrition and Functionality Assessment (NFA) among Older Adults in Japan. J Frailty Aging 2018; 7:187-192. [PMID: 30095150 DOI: 10.14283/jfa.2017.38] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE Develop and evaluate the feasibility and validity of the Nutrition and Functionality Assessment (NFA) which identifies "target" older adults who could benefit from a personalized program following evaluation of their nutrition status and physical functionality. DESIGN Cross-sectional study. SETTING Community and geriatric day-care centers and university in Japan. PARTICIPANTS 267 older adults aged 65-90. MEASUREMENTS The "target" individuals were screened based on gait speed (0.6-1.5 m/s). Nutrition (Mini Nutrition Assessment-short form and protein intake), strength (30s chair sit-to-stand and hand-grip strength) and endurance (6-minute walk) were assessed. Physical activity was monitored using a tri-axil accelerometer for a week. Fried frailty phenotype was also assessed. RESULTS Out of 267 individuals, 185 (69%) had gait speed between 0.6-1.5 m/s, corresponding to our "target" group from which, 184 (95%) completed the nutrition and physical functionality assessments with the physical activity monitoring. The NFA was completed in approximately 30 minutes. No adverse events directly due to the NFA were reported. NFA physical functionality and global scores were significantly related to frailty phenotype but nutrition score was not related to frailty phenotype. CONCLUSION The study demonstrated that the NFA is a safe and feasible tool to screen target older adults and simultaneously evaluate their nutritional status and physical functionality. Validity of the NFA was partially confirmed by the significant association of the global and physical functionality scores with frailty phenotype. More studies are required to validate and maximize the applicability of the NFA in communities and institutions in Japan and elsewhere.
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Affiliation(s)
- Y Okubo
- Yoshiro Okubo, Falls and Balance Research Group, Neuroscience Research Australia, Barker Street Randwick Sydney NSW 2031 Australia, Tel.: +61 2 9399 1065, E-mail:
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11
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Kato N, Kagami Y, Nemoto M, Endo M, Hatano M, Ono M, Jaarsma T, Kinugawa K. Changes in Sexual Activity Among Patients Supported With an Implantable Left Ventricular Assist Device in Japan. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Sugie T, Hatae T, Koide Y, Fujita T, Kusama Y, Nishitani T, Isayama A, Sato M, Shinohara K, Asakura N, Konoshima S, Kubo H, Takenaga H, Kawano Y, Kondoh T, Nagashima A, Fukuda T, Sunaoshi H, Naito O, Kitamura S, Tsukahara Y, Sakasai A, Sakamoto Y, Suzuki T, Tobita K, Nemoto M, Morioka A, Ishikawa M, Ishida S, Isei N, Oyama N, Neyatani Y, Itami K, Sakurai S, Tamai H, Tsuchiya K, Higashijima S, Nakano T, Nagaya S, Chiba S, Lee S, Shitomi M. Diagnostics System of JT-60U. Fusion Science and Technology 2017. [DOI: 10.13182/fst02-a242] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- T. Sugie
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - T. Hatae
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - Y. Koide
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - T. Fujita
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - Y. Kusama
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - T. Nishitani
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - A. Isayama
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - M. Sato
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - K. Shinohara
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - N. Asakura
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - S. Konoshima
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - H. Kubo
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - H. Takenaga
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - Y. Kawano
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - T. Kondoh
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - A. Nagashima
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - T. Fukuda
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - H. Sunaoshi
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - O. Naito
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - S. Kitamura
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - Y. Tsukahara
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - A. Sakasai
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - Y. Sakamoto
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - T. Suzuki
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - K. Tobita
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - M. Nemoto
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - A. Morioka
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - M. Ishikawa
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - S. Ishida
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - N. Isei
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - N. Oyama
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - Y. Neyatani
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - K. Itami
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - S. Sakurai
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - H. Tamai
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - K. Tsuchiya
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - S. Higashijima
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - T. Nakano
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - S. Nagaya
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - S. Chiba
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - S. Lee
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - M. Shitomi
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
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Tobita K, Kusama Y, Shinohara K, Nishitani T, Kimura H, Kramer GJ, Nemoto M, Kondoh T, Oikawa T, Morioka A, Hamamatsu K, Wang S, Takeji S, Takechi M, Ishikawa M, Tani K, Saigusa M, Ozeki T. Energetic Particle Experiments in JT-60U and Their Implications for a Fusion Reactor. Fusion Science and Technology 2017. [DOI: 10.13182/fst02-a231] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- K. Tobita
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - Y. Kusama
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - K. Shinohara
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - T. Nishitani
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - H. Kimura
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - G. J. Kramer
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - M. Nemoto
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - T. Kondoh
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - T. Oikawa
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - A. Morioka
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - K. Hamamatsu
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - S. Wang
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - S. Takeji
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - M. Takechi
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - M. Ishikawa
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - K. Tani
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - M. Saigusa
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - T. Ozeki
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
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Tsujimura K, Yamamoto A, Miyazawa M, Harada T, Bannai H, Nemoto M, Yamanaka T, Ozawa M, Kato K, Kondo T. Application of ORF68-based grouping to an epidemiological survey of epidemic abortions caused by equine herpesvirus type 1. J Equine Vet Sci 2016. [DOI: 10.1016/j.jevs.2016.02.121] [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: 11/17/2022]
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Nemoto M, Bannai H, Tsujimura K, Yamanaka T, Kondo T. Genetic and antigenic analysis of Getah virus isolated in 1978 and 2014 in Japan. J Equine Vet Sci 2016. [DOI: 10.1016/j.jevs.2016.02.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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16
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Bannai H, Nemoto M, Tsujimura K, Yamanaka T, Kondo T. Protective effect of intranasal vaccination of horses with a modified live equine herpesvirus type 1 vaccine. J Equine Vet Sci 2016. [DOI: 10.1016/j.jevs.2016.02.142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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17
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Miki S, Hayashi N, Masutani Y, Nomura Y, Yoshikawa T, Hanaoka S, Nemoto M, Ohtomo K. Computer-Assisted Detection of Cerebral Aneurysms in MR Angiography in a Routine Image-Reading Environment: Effects on Diagnosis by Radiologists. AJNR Am J Neuroradiol 2016; 37:1038-43. [PMID: 26892988 DOI: 10.3174/ajnr.a4671] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Accepted: 11/19/2015] [Indexed: 12/19/2022]
Abstract
BACKGROUND AND PURPOSE Experiences with computer-assisted detection of cerebral aneurysms in diagnosis by radiologists in real-life clinical environments have not been reported. The purpose of this study was to evaluate the usefulness of computer-assisted detection in a routine reading environment. MATERIALS AND METHODS During 39 months in a routine clinical practice environment, 2701 MR angiograms were each read by 2 radiologists by using a computer-assisted detection system. Initial interpretation was independently made without using the detection system, followed by a possible alteration of diagnosis after referring to the lesion candidate output from the system. We used the final consensus of the 2 radiologists as the reference standard. The sensitivity and specificity of radiologists before and after seeing the lesion candidates were evaluated by aneurysm- and patient-based analyses. RESULTS The use of the computer-assisted detection system increased the number of detected aneurysms by 9.3% (from 258 to 282). Aneurysm-based analysis revealed that the apparent sensitivity of the radiologists' diagnoses made without and with the detection system was 64% and 69%, respectively. The detection system presented 82% of the aneurysms. The detection system more frequently benefited radiologists than being detrimental. CONCLUSIONS Routine integration of computer-assisted detection with MR angiography for cerebral aneurysms is feasible, and radiologists can detect a number of additional cerebral aneurysms by using the detection system without a substantial decrease in their specificity. The low confidence of radiologists in the system may limit its usefulness.
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Affiliation(s)
- S Miki
- From the Departments of Computational Diagnostic Radiology and Preventive Medicine (S.M., N.H., Y.N., T.Y., M.N.)
| | - N Hayashi
- From the Departments of Computational Diagnostic Radiology and Preventive Medicine (S.M., N.H., Y.N., T.Y., M.N.)
| | - Y Masutani
- Faculty of Information Sciences and Graduate School of Information Sciences (Y.M.), Hiroshima City University, Hiroshima, Japan
| | - Y Nomura
- From the Departments of Computational Diagnostic Radiology and Preventive Medicine (S.M., N.H., Y.N., T.Y., M.N.)
| | - T Yoshikawa
- From the Departments of Computational Diagnostic Radiology and Preventive Medicine (S.M., N.H., Y.N., T.Y., M.N.)
| | - S Hanaoka
- Radiology (S.H., K.O.), The University of Tokyo Hospital, Tokyo, Japan
| | - M Nemoto
- From the Departments of Computational Diagnostic Radiology and Preventive Medicine (S.M., N.H., Y.N., T.Y., M.N.)
| | - K Ohtomo
- Radiology (S.H., K.O.), The University of Tokyo Hospital, Tokyo, Japan
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18
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Jung S, Yabushita N, Kim M, Seino S, Nemoto M, Osuka Y, Okubo Y, Figueroa R, Tanaka K. Obesity and Muscle Weakness as Risk Factors for Mobility Limitation in Community-Dwelling Older Japanese Women: A Two-Year Follow-Up Investigation. J Nutr Health Aging 2016; 20:28-34. [PMID: 26728930 DOI: 10.1007/s12603-016-0672-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVES To examine the combined association of obesity and low muscle strength with mobility limitation in older adults. DESIGN, SETTING AND PARTICIPANTS This two-year follow-up longitudinal study included pooled data from 283 older community-dwelling Japanese women without mobility limitations who were 65 to 87 years of age (mean age 72.2 ± 5.0 years). MEASUREMENTS Muscle strength was measured by hand-grip strength (HGS). The participants were categorized by HGS (high muscle strength: HGS ≥19.6 kg, low muscle strength: HGS <19.6 kg) and body mass index (BMI) (obese: BMI ≥25 kg/m2, normal weight: BMI <25 kg/m2). The main outcome was mobility limitation, assessed by a self-reported questionnaire (difficulty walking one-half mile or climbing 10 steps without resting). Multivariate logistic regression analysis was performed to determine the combined effect of HGS and BMI on mobility limitation, adjusting for age, exercise habits, medications, and knee pain. RESULTS During the follow-up period, 82 of 283 participants (29.0%) developed mobility limitation. The adjusted odds ratios (95% confidence interval) for the incidence of mobility limitation were 1.53 (0.86-2.73) and 2.05 (1.08-3.91) in the obese and low muscle strength groups, respectively. Obesity combined with low muscle strength exhibited a significant and strong association with mobility limitation (odds ratio: 3.88, 1.08-13.91) compared with participants with normal weight and high muscle strength. CONCLUSION Among community-dwelling older Japanese women, obesity alone was not associated with the incidence of mobility limitation, but when combined with low muscle weakness, the risk of developing mobility limitation was 3.9-fold greater than for the reference group.
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Affiliation(s)
- S Jung
- Songee Jung, Ph.D. Faculty of Health and Sport Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan, Phone number: +81 29 853 5600 (ext. 8365), Fax number: +81 29 853 2986, E-mail:
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Yamanaka T, Cullinane A, Gildea S, Bannai H, Nemoto M, Tsujimura K, Kondo T, Matsumura T. The potential impact of a single amino-acid substitution on the efficacy of equine influenza vaccines. Equine Vet J 2014; 47:456-62. [DOI: 10.1111/evj.12290] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2014] [Accepted: 04/09/2014] [Indexed: 11/29/2022]
Affiliation(s)
- T. Yamanaka
- Epizootic Research Center; Equine Research Institute; Japan Racing Association; Shimotsuke Japan
| | - A. Cullinane
- Virology Unit; Irish Equine Centre; Johnstown Naas Co.; Kildare Ireland
| | - S. Gildea
- Virology Unit; Irish Equine Centre; Johnstown Naas Co.; Kildare Ireland
| | - H. Bannai
- Epizootic Research Center; Equine Research Institute; Japan Racing Association; Shimotsuke Japan
| | - M. Nemoto
- Epizootic Research Center; Equine Research Institute; Japan Racing Association; Shimotsuke Japan
| | - K. Tsujimura
- Epizootic Research Center; Equine Research Institute; Japan Racing Association; Shimotsuke Japan
| | - T. Kondo
- Epizootic Research Center; Equine Research Institute; Japan Racing Association; Shimotsuke Japan
| | - T. Matsumura
- Epizootic Research Center; Equine Research Institute; Japan Racing Association; Shimotsuke Japan
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Takahashi M, Jinno H, Hayashida T, Nemoto M, Tanimoto A, Kitagawa Y. Abstract P4-03-03: Feasibility study of a new volume navigation system-guided breast biopsy method for incidental enhancing lesions detected by breast contrast-enhanced magnetic resonance imaging. Cancer Res 2012. [DOI: 10.1158/0008-5472.sabcs12-p4-03-03] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Incidental enhancing lesions (IELs) undetected by conventional imaging such as mammography and ultrasonography (US) have been reported in 16–29% of patients undergoing subsequent breast contrast-enhanced magnetic resonance imaging (CE-MRI). We recently assessed IELs by performing breast biopsies using a volume navigation system (V-Navi) which synchronizse real-time US images with reconstructed CE-MRI data side-by-side on the same monitor. The aim of this retrospective study was to evaluate the feasibility of V-Navi-guided biopsy method as an IEL diagnostic procedure.
Methods: We performed breast biopsies on 333 patients after mammography, US and CE-MRI (GE Signa Excite HDx 1.5T, USA) examinations between January 2011 and May 2012 at Keio University Hospital. Patients with IELs detected by CE-MRI underwent a second-look US and a bilateral CE-MRI in the supine position in order to achieve the same position as in the US. CE-MRI data was then fused with real-time US images using a V-Navi (Logiq E9, GE Healthcare, USA). When an IEL was identified, we performed a V-Navi-guided vacuum-assisted needle biopsy (11G) or an excisional biopsy after V-Navi-guided marking.
Results: US-guided and stereo-guided breast biopsies were performed on 77.2% (257) and 16.8% (56) of the 333 patients, respectively. Twenty patients (6.0%) had IELs detected by CE-MRI and all such IELs were identified by the V-Navi. Sixteen (80%) of those 20 patients had IELs clearly detected by the V-Navi and underwent V-Navi-guided needle biopsies. The four remaining patients (20%) had IELs that were not clearly detected by the V-Navi and they underwent excisional biopsies. The median IEL size was 8.8mm (range, 5.0–48) and the median procedure time for V-Navi-guided needle biopsies was 42 minutes. No major complications were encountered in any of the cases. Histopathologically, nine IELs (45%) had malignant findings of invasive ductal carcinoma (5/20) and ductal carcinoma in situ (4/20) and 11 IELs (55%) had benign findings of fibrocystic disease (10/20) and intraductal papilloma (1/20).
Conclusion: The V-Navi-guided breast biopsy method was shown to be a safe and effective diagnostic method for the assessment of IELs detected by breast CE-MRI.
Citation Information: Cancer Res 2012;72(24 Suppl):Abstract nr P4-03-03.
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Affiliation(s)
- M Takahashi
- Keio University School of Medicine, Tokyo, Japan
| | - H Jinno
- Keio University School of Medicine, Tokyo, Japan
| | - T Hayashida
- Keio University School of Medicine, Tokyo, Japan
| | - M Nemoto
- Keio University School of Medicine, Tokyo, Japan
| | - A Tanimoto
- Keio University School of Medicine, Tokyo, Japan
| | - Y Kitagawa
- Keio University School of Medicine, Tokyo, Japan
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Bannai H, Nemoto M, Tsujimura K, Yamanaka T, Kondo T, Matsumura T. Development of a novel virus-neutralizing test of equine herpesvirus type-1 by a plaque-reduction method using 96-well plates. J Equine Vet Sci 2012. [DOI: 10.1016/j.jevs.2012.08.124] [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: 10/27/2022]
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22
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Kido H, Nemoto M, Tomita K, Kurosawa N, Kimura H, Yasuda H. Site Specific Atmospheric Dispersion Simulation System – Tritium Release. Fusion Science and Technology 2011. [DOI: 10.13182/fst11-a12662] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- H. Kido
- Visible Information Center, Inc., 440, Muramatsu Tokai-mura IBARAKI-KEN, 319-1112 Japan
- Institute of Applied Beam Science, Graduate School of Science and Engineering, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan
| | - M. Nemoto
- Visible Information Center, Inc., 440, Muramatsu Tokai-mura IBARAKI-KEN, 319-1112 Japan
| | - K. Tomita
- Visible Information Center, Inc., 440, Muramatsu Tokai-mura IBARAKI-KEN, 319-1112 Japan
| | - N. Kurosawa
- Visible Information Center, Inc., 440, Muramatsu Tokai-mura IBARAKI-KEN, 319-1112 Japan
| | - H. Kimura
- Aomori Prefectural Nuclear Power Safety Center, 400-1 Kurauchi Sasazaki, Rokkasho-mura, Kamikita-gun, Aomori 039-3215 Japan
| | - H. Yasuda
- Aomori Prefectural Nuclear Power Safety Center, 400-1 Kurauchi Sasazaki, Rokkasho-mura, Kamikita-gun, Aomori 039-3215 Japan
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23
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Ishii K, Saito Y, Itai S, Nemoto M, Takayama K, Nagai T. Comparative Study of Pharmacokinetic Parameters Between Clarithromycin and Erythromycin Stearate in Relation to Their Physicochemical Properties. Drug Dev Ind Pharm 2008; 24:129-37. [PMID: 15605442 DOI: 10.3109/03639049809085597] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Pharmacokinetic parameters for clarithromycin (CAM) and erythromycin stearate (EMS) were obtained from a model including decomposition in the gastrointestinal tract. To confirm the accuracy of the parameters, various physicochemical properties of both drugs were examined. The ratio of the in vivo dissolution rate, the in vivo decomposition rate and the absorption rate between CAM and EMS were well correlated to the ratio of the in vitro intrinsic dissolution rate, the decomposition rate in the acidic solution, and partition coefficient, respectively. One of the reasons for the excellent absorption of CAM compared with that of EMS was the higher stability in the acidic solution and the higher partition coefficient of CAM. These findings indicate that the ratio of the partition coefficient to the decomposition rate constant in acidic solution plays an important role in determining drug bioavailability for macrolide antibiotics.
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Affiliation(s)
- K Ishii
- Pharmaceutical Research Laboratories, Taisho Pharmaceutical Co., Ltd. Yoshino-cho 1-403, Ohmiya-shi, Saitama, 330, Japan
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Park HJ, Uchino M, Nakamura M, Ueno M, Kojima Y, Itoman M, Yokoyama K, Suzuki T, Nemoto M. Immediate interlocking nailing versus external fixation followed by delayed interlocking nailing for Gustilo type IIIB open tibial fractures. J Orthop Surg (Hong Kong) 2007; 15:131-6. [PMID: 17709847 DOI: 10.1177/230949900701500201] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
PURPOSE To compare immediate interlocking nailing with external fixation followed by delayed interlocking nailing, for Gustilo type IIIB open tibial fractures. METHODS 23 patients with Gustilo IIIB open tibial fractures were treated with either immediate unreamed interlocking nailing (n=9) or external fixation followed by delayed unreamed interlocking nailing (n=14). Patient age, sex ratio, fracture site, fracture type, and severity were similar in both groups. The time to union, deep infection rate, and nonunion rate in the 2 groups were compared. RESULTS In the immediate and delayed nailing groups, respective mean times to union were 21 (standard deviation [SD], 14) months and 14 (SD, 8) months; nonunion rates were 44% (4/9) and 36% (5/14), and deep infection rates were 22% (2/9) and 7% (1/14). All corresponding differences were not statistically significant. CONCLUSION Prospective, randomised, multicentre studies are needed to assess whether there are significant differences between the 2 treatment methods.
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Affiliation(s)
- H J Park
- Department of Orthopaedic Surgery, School of Medicine, Kitasato University, Sagamihara, Kanagawa, Japan
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Li X, Nemoto M, Xu Z, Yu SW, Shimoji M, Andrabi SA, Haince JF, Poirier GG, Dawson TM, Dawson VL, Koehler RC. Influence of duration of focal cerebral ischemia and neuronal nitric oxide synthase on translocation of apoptosis-inducing factor to the nucleus. Neuroscience 2006; 144:56-65. [PMID: 17049179 PMCID: PMC1876769 DOI: 10.1016/j.neuroscience.2006.08.065] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2006] [Revised: 08/21/2006] [Accepted: 08/29/2006] [Indexed: 11/23/2022]
Abstract
Translocation of apoptosis-inducing factor (AIF) from the mitochondria to the nucleus can play a major role in neuronal death elicited by oxidant stress. The time course of nuclear translocation of AIF after experimental stroke may vary with the severity of injury and may be accelerated by oxidant stress associated with reperfusion and nitric oxide (NO) production. Western immunoblots of AIF on nuclear fractions of ischemic hemisphere of male mice showed no significant increase with 1 h of middle cerebral artery occlusion and no reperfusion, whereas increases were detectable after 6 and 24 h of permanent ischemia. However, as little as 20 min of reperfusion after 1 h of middle cerebral artery occlusion resulted in an increase in nuclear AIF coincident with an increase in poly(ADP-ribose) polymer (PAR) formation. Further nuclear AIF accumulation was seen at 6 and 24 h of reperfusion. In contrast, 20 min of reperfusion after 2 h of occlusion did not increase nuclear AIF. In this case, nuclear AIF became detectable at 6 and 24 h of reperfusion. With brief occlusion of 30 min duration, nuclear AIF remained undetectable at both 20 min and 6 h and became evident only after 24 h of reperfusion. Inhibition of neuronal NO synthase attenuated formation of PAR and nuclear AIF accumulation. Gene deletion of neuronal NO synthase also attenuated nuclear AIF accumulation. Therefore, reperfusion accelerates AIF translocation to the nucleus when focal ischemia is of moderate duration (1 h), but is markedly delayed after brief ischemia (30 min). Nuclear translocation of AIF eventually occurs with prolonged focal ischemia with or without reperfusion. Neuronally-derived NO is a major factor contributing to nuclear AIF accumulation after stroke.
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Affiliation(s)
- X Li
- Department of Anesthesiology and Critical Care Medicine, The Johns Hopkins Medical Institutions, The Johns Hopkins University, 600 North Wolfe Street, Blalock 1404, Baltimore, MD 21287, USA
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27
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Horita Z, Ichitani K, Sano T, Nemoto M. Applicability of the differential X-ray absorption method to the determinations of foil thickness and local composition in the analytical electron microscope. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/01418618908209829] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Nemoto M, Morita Y, Mishima Y, Takahashi S, Nomura T, Ushiki T, Shiroishi T, Kikkawa Y, Yonekawa H, Kominami R. Ahl3, a third locus on mouse chromosome 17 affecting age-related hearing loss. Biochem Biophys Res Commun 2005; 324:1283-8. [PMID: 15504353 DOI: 10.1016/j.bbrc.2004.09.186] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2004] [Indexed: 10/26/2022]
Abstract
Genetic variation in humans probably plays a role in determining the range of individual susceptibility to age-related hearing loss (AHL), but no contributing loci have been identified because of the difficulties of dissecting complex traits in humans. This paper reports mapping of an AHL locus using a panel of consomic mice between C57BL/6J (B6) and MSM strains, which covered more than a half of chromosome sets. B6 strain exhibited AHL beginning at 10 months of age whereas MSM strain, derived from Japanese wild mice, had normal hearing throughout life. Individuals in the panel were examined with auditory brainstem response (ABR) at various months of age, revealing that one particular strain (B6-Chr17(MSM)) substituting the chromosome 17 with the MSM-derived one showed a prominent resistance, having still good hearing at 18 months of age. Subsequent mapping using 89 individuals in the cross between B6-Chr17(MSM) and B6 was performed, which showed a significant association of ABR thresholds with loci in the vicinity of D17Mit119. These results show a novel AHL-resistant locus, designated as Ahl3, on the chromosome 17.
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Affiliation(s)
- M Nemoto
- Department of Molecular Genetics, Graduate School of Medical and Dental Sciences, Niigata University, Asahimachi 1-757, Niigata 951-8122, Japan
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Narita M, Ohnishi O, Nemoto M, Yajima Y, Suzuki T. Implications of phosphoinositide 3-kinase in the mu- and delta-opioid receptor-mediated supraspinal antinociception in the mouse. Neuroscience 2002; 113:647-52. [PMID: 12150784 DOI: 10.1016/s0306-4522(02)00197-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Phosphoinositide 3-kinases (PI3Ks) are a family of lipid kinases that activates signalling pathways. The present study was designed to investigate whether PI3K could be involved in supraspinal antinociception induced by intracerebroventricular (i.c.v.) administration of micro- and delta-opioid receptor agonists in the mouse. We demonstrated using the mouse warm-plate assay that the prototype of micro-opioid receptor agonist morphine, selective mu-opioid receptor agonist [D-Ala(2),N-Me-Phe(4),Gly(5)-ol]enkephalin (DAMGO) and delta-opioid receptor agonists [D-Ala(2)]deltorphin II and [D-Pen(2,5)]enkephalin (DPDPE) when given i.c.v. produced profound antinociceptive responses. Under these conditions, i.c.v. pretreatment with cell-permeable and specific PI3K inhibitors wortmannin (0.7-2.3 nmol) and LY294002 (3-33 nmol), which alone had no effects on the basal warm-plate latencies, caused a dose-dependent inhibition of either morphine-, DAMGO-, DPDPE- or [D-Ala(2)]deltorphin II-induced antinociception. Furthermore, LY294002 at 33 nmol significantly shifted the dose-response curves for DAMGO-, DPDPE- and [D-Ala(2)]deltorphin II-induced antinociception to the right. In the immunoblotting assay, we found that PI3K gamma is dense in the periaqueductal gray and lower medulla regions that include several key sites for the production of opioid-induced antinociception. Our findings provide evidence that central PI3K pathways may, at least in part, contribute to the expression of supraspinal antinociception induced by both mu- and delta-opioid receptor agonists in the mouse.
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MESH Headings
- Analgesics, Opioid/administration & dosage
- Analgesics, Opioid/pharmacology
- Animals
- Blotting, Western
- Enkephalin, Ala(2)-MePhe(4)-Gly(5)-/pharmacology
- Enkephalin, D-Penicillamine (2,5)-/pharmacology
- Injections, Intraventricular
- Male
- Mice
- Pain/drug therapy
- Pain/metabolism
- Phosphatidylinositol 3-Kinases/metabolism
- Receptors, Opioid, delta/agonists
- Receptors, Opioid, delta/metabolism
- Receptors, Opioid, mu/agonists
- Receptors, Opioid, mu/metabolism
- Signal Transduction
- Time Factors
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Affiliation(s)
- M Narita
- Department of Toxicology, School of Pharmacy, Hoshi University, 2-4-41 Ebara, Shinagawa-ku, Tokyo 142-8501, Japan
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Endo T, Nemoto M, Ogawa T, Tamakai H, Hamaue N, Hirafuji M, Takeda Y, Hasegawa M, Fugii Y, Minami M. Pharmacological aspects of ipecac syrup (TJN-119)-induced emesis in ferrets. Res Commun Mol Pathol Pharmacol 2002; 108:187-200. [PMID: 11913711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
In order to elucidate the precise mechanism of ipecac syrup (TJN-119) on the occurrence of vomiting, we examined the effects of ipecac syrup on the abdominal afferent nerve activity as well as on the 5-HT levels of the ileum and area postrema in ferrets. Oral administration of TJN-119 (0.5 mg/kg) produced a significant increase in afferent abdominal vagus nerve activity which lasted approximately 1 hour. The maximum response induced by TJN-119 was estimated to be 219 +/- 18% of the pre-injection level. Cephaeline or emetine, the main alkaloids of ipecac syrup, also demonstrated similar effects on afferent vagus nerve activity. TJN-119 increased the 5-HT content in the ileum but not in the area postrema. These observations illustrate possible mechanisms that may act at peripheral sites. It was recently reported that TJN-119 has a high affinity to 5-HT4 receptors (Hasegawa et al., unpublished data). These results suggest that 5-HT4 receptors may be involved in the emetic action of TJN-119.
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Affiliation(s)
- T Endo
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Japan
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31
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Kimura S, Saito H, Minami M, Togashi H, Nakamura N, Ueno K, Shimamura K, Nemoto M, Parvez H. Docosahexaenoic acid attenuated hypertension and vascular dementia in stroke-prone spontaneously hypertensive rats. Neurotoxicol Teratol 2002; 24:683-93. [PMID: 12200199 DOI: 10.1016/s0892-0362(02)00219-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- S Kimura
- Department of Clinical Pharmacology, Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-Tobetsu, Hokkaido, 061-0293, Japan
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32
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Hanzawa S, Nemoto M, Etoh S, Onoda N, Sakio H. [A case of amphetamine-induced down-regulation of beta-adrenoceptor]. Masui 2001; 50:1242-5. [PMID: 11758335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
A 29-year-old man with severe pyloric stenosis confessed that he had been a chronic amphetamine abuser just after awakening from anesthesia for partial gastrectomy. Anesthesia was maintained with thoracic epidural bupivacaine combined with continuous i.v. infusion of propofol. Decreased arterial blood pressure was observed 10 min after starting epidural anesthesia, and remained stable at 80-90 mmHg of systolic blood pressure in spite of massive fluid resuscitation in addition to repeated i.v. administration of ephedrine/methoxamine and continuous i.v. infusion of dopamine at a rate of 8 micrograms.kg-1.min-1. Finally, arterial blood pressure rose gradually after i.v. administration of methylpredonisolone 500 mg. We speculate that the down-regulation of beta-adrenoceptor induced by the sympathomimetic action of amphetamine, might be a major cause of refractory hypotension.
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Affiliation(s)
- S Hanzawa
- Department of Anesthesiology, Ohtawara Red Cross Hospital, Tochigi 324-0058
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33
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Minami M, Endo T, Yokota H, Ogawa T, Nemoto M, Hamaue N, Hirafuji M, Yoshioka M, Nagahisa A, Andrews PL. Effects of CP-99, 994, a tachykinin NK(1) receptor antagonist, on abdominal afferent vagal activity in ferrets: evidence for involvement of NK(1) and 5-HT(3) receptors. Eur J Pharmacol 2001; 428:215-20. [PMID: 11675038 DOI: 10.1016/s0014-2999(01)01297-3] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The effect of CP-99, 994, a tachykinin NK(1) receptor antagonist, on abdominal vagal afferent nerve activity in the ferret was investigated. Substance P (1 microg/kg, i.v.) increased vagal afferent activity by 449.0+/-51.9% and this was reduced to 145.9+/-5.7% (p<0.01) by pre-treatment with CP-99, 994 (1 mg/kg, i.v.), and to 149.5+/-1.5% (p<0.001) by granisetron (1 mg/kg, i.v.), a 5-HT(3) receptor antagonist. In addition, the increase in vagal nerve activity induced by 5-HT (25 microg/kg, i.v., 552.0+/-57.0% increase from pre-injection level) was significantly reduced (401.3+/-10.6% increase from pre-injection level, p<0.05) by CP-99, 994 (100 microg/kg, i.v.). These results provide evidence for an involvement of peripheral NK(1) and 5-HT(3) receptors in substance P-induced vagal afferent activation. While the functional consequences (if any) of such peripheral effects were not investigated, they could contribute either directly (e.g. by blockade of receptors on vagal afferents) or indirectly (e.g. modulation of 5-HT release or reduction of local inflammatory response) to the antiemetic effects of CP-99, 994 against cisplatin and other emetic agents acting primarily via the vagus.
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Affiliation(s)
- M Minami
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, 1757 Kanazawa, Ishikari-Tobetsu, Hokkaido 061-0293, Japan.
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34
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Sheth S, Pouratian N, Guiou M, Nemoto M, Toga AW. The effect of estrogen on cerebral vasculature: an optical intrinsic imaging study. Neuroimage 2001. [DOI: 10.1016/s1053-8119(01)92181-0] [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: 10/26/2022] Open
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35
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Guiou M, O'Farrell A, Sheth S, Pouratian N, Nemoto M, Toga A. EEG and multi-wavelength optical intrinsic signal imaging of cortical spreading depression. Neuroimage 2001. [DOI: 10.1016/s1053-8119(01)92317-1] [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] Open
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36
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Kubota N, Kiuchi Y, Nemoto M, Oyamada H, Ohno M, Funahashi H, Shioda S, Oguchi K. Regulation of serotonin transporter gene expression in human glial cells by growth factors. Eur J Pharmacol 2001; 417:69-76. [PMID: 11301061 DOI: 10.1016/s0014-2999(01)00906-2] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The aims of this study were to identify monoamine transporters expressed in human glial cells, and to examine the regulation of their expression by stress-related growth factors. The expression of serotonin transporter mRNA was detected by reverse transcriptase-polymerase chain reaction in normal human astrocytes, whereas the dopamine transporter (DAT) and the norepinephrine transporter (NET) were not detected. The cDNA sequence of the "glial" serotonin transporter in astrocytes was consistent with that reported for the "neuronal" serotonin transporter (SERT). Moreover, we also demonstrated SERT expression in glial fibrillary acidic protein-positive cells by immunocytochemical staining in normal human astrocytes. Serotonin transporter gene expression was also detected in glioma-derived cell lines (A172, KG-1-C and KGK). Addition of basic fibroblast growth factor (bFGF) or epidermal growth factor (EGF) for 2 days increased serotonin transporter gene expression in astrocytes and JAR (human choriocarcinoma cell line). Basic fibroblast growth factor, but not epidermal growth factor, increased specific [3H]serotonin uptake in astrocytes in a time (1-4 days)- and concentration (20-100 ng/ml)-dependent manner. The expression of genes for basic fibroblast growth factor and epidermal growth factor receptors was detected in astrocytes. These findings suggest that the expression of the serotonin transporter in human glial cells is positively regulated by basic fibroblast growth factor.
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Affiliation(s)
- N Kubota
- Department of Pharmacology, School of Medicine, Showa University, 142-8555, Tokyo, Japan
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37
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Nemoto M, Endo T, Minami M, Yoshioka M, Ito H, Saito H. 5-Hydroxytryptamine (5-HT)-induced depolarization in isolated abdominal vagus nerves in the rat: involvement of 5-HT3 and 5-HT4 receptors. Res Commun Mol Pathol Pharmacol 2001; 109:217-30. [PMID: 11758651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
In this study, we developed an electrophysiological technique for the in vitro measurement of isolated abdominal vagus nerve depolarization in the rat. This technique was used to compare abdominal and cervical vagus nerve depolarization values. Both 5-HT and a selective 5-HT3 agonist, 2-CH3-5HT, caused a concentration-dependent depolarization in rat isolated abdominal vagus nerves in vitro. Isolated cervical vagus nerves also showed concentration-dependent depolarization, although the isolated cervical vagus nerve depolarization was approximately 60% of that of the isolated abdominal vagus nerves at similar concentration ranges of 5-HT and 2-CH3-5HT in vitro. In isolated abdominal vagus nerves, a selective 5-HT3 antagonist, granisetron, produced a concentration-dependent decrease, but reduced the maximal response of 5-HT-induced depolarization in vitro. In isolated abdominal vagus nerves, selective 5-HT4 antagonist, SB204070, produced parallel and concentration-dependent shifts to the right on the concentration-response curves to 5-HT in vitro. These findings suggest that this electrophysiological method for evaluating isolated abdominal vagus nerve depolarization is a useful technique for the estimation of 5-HT-induced depolarization.
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Affiliation(s)
- M Nemoto
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-Tobetsu, Japan
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38
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Narita M, Ohnishi O, Nemoto M, Aoki T, Suzuki T. [The involvement of phosphoinositide 3-kinase (PI3-Kinase) and phospholipase C gamma (PLC gamma) pathway in the morphine-induced supraspinal antinociception in the mouse]. Nihon Shinkei Seishin Yakurigaku Zasshi 2001; 21:7-14. [PMID: 11400324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/16/2023]
Abstract
The present study was designed to investigate whether the phospholipase C gamma (PLC gamma)/phosphoinositide 3-kinase (PI3-Kinase) pathway could participate in the expression of the supraspinal antinociception induced by intracerebroventricular (i.c.v.) administration of mu-opioid receptor agonist in the mouse. The i.c.v. pretreatment with PI3-Kinase inhibitors, wortmannin and LY294002, and a specific antibody to PLC gamma 1 significantly attenuated the antinociception produced by either i.c.v. or systemic (s.c.) injection of a prototype of mu-agonist morphine. The s.c. injection of morphine produced a marked increase in the level of membrane-bound PLC gamma 1 isoform as compared to that from the saline-treated mice. This up-regulation of PLC gamma 1 by morphine was significantly inhibited by i.c.v. pretreatment with LY294002, indicating that morphine can activate PLC gamma 1 through the stimulation of PI3-Kinase. Pretreatment with a specific IP3 receptor inhibitor xestospongin C suppressed the morphine-induced antinociception in a dose-dependent manner. Recent studies have demonstrated that PI3-Kinase can be activated by G beta gamma, but not by G alpha subunit. In the present study, i.c.v. pretreatment with specific antibodies to G12 alpha and G beta gamma significantly suppressed the antinociception induced by morphine, whereas the specific antibody to Gq/11 alpha did not affect the antinociception induced by morphine. The present findings suggest that the supraspinal antinociception induced by mu-opioid receptor agonist may be mediated, at least in part, by the activation of PLC gamma through the stimulation of PI3-Kinase modulated by G beta gamma subunit.
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Affiliation(s)
- M Narita
- Department of Toxicology, School of Pharmacy, Hoshi University, 2-4-41, Ebara, Shinagawa-ku, Tokyo 142-8501, Japan
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39
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Tamura M, Nemoto M, Sato C, Hoshi Y. [Optical imaging of brain function]. No To Shinkei 2001; 53:140-50. [PMID: 11268578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Affiliation(s)
- M Tamura
- Laboratory of Supramolecular Biophysics, Section of Intelligent Materials and Device, Research Institute for Electronic Science, Hokkaido University, Kita 12 Nishi 6, Kita-ku, Sapporo 060-0812, Japan
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Endo T, Minami M, Hirafuji M, Ogawa T, Akita K, Nemoto M, Saito H, Yoshioka M, Parvez SH. Neurochemistry and neuropharmacology of emesis - the role of serotonin. Toxicology 2000; 153:189-201. [PMID: 11090957 DOI: 10.1016/s0300-483x(00)00314-0] [Citation(s) in RCA: 65] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Emesis is an instinctive defense reaction caused by the somato-autonomic nerve reflex which is integrated in the medulla oblongata. Emesis caused by cytotoxic drugs and radiation is associated with an increase in the concentration of 5-hydroxytryptamine (5-HT) in the intestinal mucosa and in the brainstem. 5-HT released from enterochromaffin (EC) cells, which synthesize and secrete 5-HT, stimulates the 5-HT(3) receptors on the adjacent vagal afferent nerves. This vagal afferent nerve depolarization may evoke the vomiting reflex. This review describes the role of 5-HT in anticancer drug-induced emesis from the viewpoint of 5-HT release from EC cells and afferent vagus nerve activity.
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Affiliation(s)
- T Endo
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, 1757, Ishikari-Tobetsu, 061-0293, Hokkaido, Japan.
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41
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Kimura S, Saito H, Minami M, Togashi H, Nakamura N, Nemoto M, Parvez HS. Pathogenesis of vascular dementia in stroke-prone spontaneously hypertensive rats. Toxicology 2000; 153:167-78. [PMID: 11090955 DOI: 10.1016/s0300-483x(00)00312-7] [Citation(s) in RCA: 77] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Stroke-prone spontaneously hypertensive rats (SHRSP) are the best model for essential hypertension and stroke. In this study, one investigated whether SHRSP might be a useful animal model for vascular dementia. An impairment of learning-memory function was found in SHRSP. A disturbance in circadian rhythm after stroke in SHRSP was clarified. Desynchronization of light and dark alternation cycles and abnormal rhythm were also demonstrated. These observations point to the possibility that the decreased passive avoidance response observed in SHRSP might be similar to the phenomenon of memory impairment in patients with vascular dementia. The behavioral changes in ambulation in SHRSP, including the desynchronization between light and dark alternation cycles and the abnormal rhythm before death, might correspond to the behavioral changes associated with the delirium-state observed in patients with dementia. Cerebral cortex levels of acetylcholine and choline in SHRSP decreased significantly as compared with the Wistar Kyoto rats (WKY) control group. Hippocampal levels of acetylcholine and choline in SHRSP decreased significantly as compared with those in WKY. Moreover, a correlation between passive avoidance response latency and hippocampal acetylcholine levels was observed. These findings suggest that decreased acetylcholine levels in both the cerebral cortex and the hippocampus may be related to the impairment of learning-memory function and abnormal behavior. In SHRSP, increases in blood viscosity, hematocrit and fibrinogen might produce the formation of thrombus and induce cerebral infarction. Some histopathological findings caused by cerebrovascular disorder in human brain very similar to those observed in the SHRSP brain. On the other hand, so called 'senile changes' were detected only in the human case, and not observed in the SHRSP.
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Affiliation(s)
- S Kimura
- Department of Clinical Pharmacology, Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-Tobetsu, 061-0293, Hokkaido, Japan.
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Kori T, Nemoto M, Maeda M, Tsuzuki Y, Ando T, Sekihara M, Uchida N, Mochida Y, Kogure K, Kuwano H. Sonographic features of acute colonic diverticulitis: the "dome sign". J Clin Ultrasound 2000; 28:340-346. [PMID: 10934333 DOI: 10.1002/1097-0096(200009)28:7<340::aid-jcu4>3.0.co;2-b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
PURPOSE This study was performed to clarify the sonographic features of acute colonic diverticulitis to enable its differentiation from appendicitis. METHODS Of 119 patients who were referred to our hospitals for lower abdominal pain between June 1997 and December 1998 and underwent sonography, 12 patients had a definitive diagnosis of acute colonic diverticulitis and 4 patients a tentative diagnosis. Seventy-eight patients were diagnosed as having acute appendicitis, confirmed by appendectomy. In the 16 patients with diagnoses of diverticulitis, the sonographic and clinical features of acute colonic diverticulitis were studied. RESULTS Among the 12 patients with definitive diagnoses of acute colonic diverticulitis, sonographic findings included localized thickening of the colonic wall (100%) and a hemispheric mass (the "dome sign") protruding at the thickened colonic wall (100%) and consisting of a hypoechoic wall (100%) and a central echogenic area (66%). The presence of diverticula was confirmed by barium-enema x-ray study in all 12 patients. The 4 patients with tentative diagnoses of acute colonic diverticulitis all had colonic wall thickening but no dome sign. Colonoscopy revealed colitis in 3 of these patients. All 16 patients recovered with conservative treatment, without laparotomy. CONCLUSIONS Sonography was useful for differentiating acute colonic diverticulitis from appendicitis. The sonographic finding of the dome sign seems to be specific for acute colonic diverticulitis.
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Affiliation(s)
- T Kori
- Department of Surgery, Hokumo Hospital, 233 Arima, Sibukawa 377-0005, Japan
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43
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Sugo N, Kuroki T, Nemoto M, Mito T, Seiki Y, Shibata I. [Difference in 201TlCl accumulation mechanism in brain tumors: a comparison of their Na(+)-K+ ATPase activities]. Kaku Igaku 2000; 37:311-8. [PMID: 10965651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
The accumulation levels of 201TlCl and Na(+)-K+ ATPase activity in tumor tissue were compared among glioblastoma, benign glioma and meningioma to study the difference in the mechanism of 201TlCl accumulation. The subjects were 19 cases comprised of 6 glioblastoma, 2 oligodendroglioma, 1 fibrillary astrocytoma, 1 pilocytic astrocytoma and 9 meningioma. Preoperative 201TlCl SPECT was performed in all the cases, and Thallium Index (TL index) was calculated by a ratio of 201TlCl in the tumor area and the contralateral area. In addition, cell membrane was extracted from the tumor tissue collected intraoperatively to determine Na(+)-K+ ATPase activity. No statistically significant difference in TL index was noted between the glioblastoma group (6.97 +/- 2.67) and the meningioma group (5.87 +/- 1.99). This fact showed that there was no difference in the accumulation level of 201TlCl between the two groups. On the other hand, the glioblastoma group indicated a higher value of Na(+)-K+ ATPase activity (49.13 +/- 43.76 mumole/hour/mg protein) than the meningioma group (7.73 +/- 13.84 mumole/hour/mg protein) (p < 0.05, t test). These results suggested the involvement of Na(+)-K+ ATPase activity in 201TlCl accumulation in glioblastoma and the influences of other accumulation mechanism than Na(+)-K+ ATPase activity such as the volume of intratumoral vascular bed in meningioma.
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Affiliation(s)
- N Sugo
- Department of Neurosurgery, Toho University School of Medicine, Omori Hospital
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Martin G, Nemoto M, Gelman L, Geffroy S, Najib J, Fruchart JC, Roevens P, de Martinville B, Deeb S, Auwerx J. The human fatty acid transport protein-1 (SLC27A1; FATP-1) cDNA and gene: organization, chromosomal localization, and expression. Genomics 2000; 66:296-304. [PMID: 10873384 DOI: 10.1006/geno.2000.6191] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Uptake of fatty acids into cells is a controlled process in part regulated by fatty acid transport proteins (FATPs), which facilitate the transport of fatty acids across the cell membrane. In this study the structure of the human FATP-1 (HGMW-approved symbol SLC27A1) cDNA and gene was determined, and the expression of its mRNA in human was characterized. Muscle and adipose tissue have the highest levels of FATP-1 mRNA, small intestine has intermediate levels, and FATP-1 mRNA is barely detectable in liver. The human FATP-1 gene has 12 exons and extends over more than 13 kb of genomic DNA. The FATP gene maps to chromosome 19p13.1 by fluorescence in situ hybridization, a region previously suggested to be implicated in the determination of small dense low-density lipoprotein (LDL). Knowledge of the gene structure and chromosomal localization will allow screening for FATP mutations in humans with metabolic disorders, whereas knowledge of its expression pattern and factors regulating its expression could be of importance in understanding its biology.
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Affiliation(s)
- G Martin
- Département d'Athérosclérose, INSERM U 325, Lille, F-59019, France
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Akiyama K, Inoue T, Nemoto M, Goshima M, Koga M, Negishi N, Sezai Y. A case report of nonresective staple exclusion of abdominal aortic aneurysm associated with horseshoe kidney. Ann Thorac Cardiovasc Surg 2000; 6:199-202. [PMID: 10899693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023] Open
Abstract
A 55 year old male with a history of intermittent claudication presented with an abdominal mass, and was diagnosed by abdominal computed tomography (CT) with an abdominal aortic aneurysm accompanying horseshoe kidney. The horseshoe kidney configuration and governing vessels, urinary duct course, and right common iliac arterial stenosis were shown by methods such as angiogram, spiral CT, and intravenous pyelogram before operation. At the operation, the abdomen was opened by a median incision and, using a staple exclusion technique, the abnormal renal artery was reconstructed using 189 mm knitted Y shaped dacron graft replacement and the great saphenous vein. The isthmus was not resected. There were no post operative complications, nor was there any large decrease in renal function. Good results were obtained, and we herein report our results together with a discussion of the literature.
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Affiliation(s)
- K Akiyama
- Second Department of Surgery, Nihon University School of Medicine, 30-1 Oyaguchi-kamimachi, Itabashi-ku, Tokyo 173-0032, Japan
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Meirhaeghe A, Martin G, Nemoto M, Deeb S, Cottel D, Auwerx J, Amouyel P, Helbecque N. Intronic polymorphism in the fatty acid transport protein 1 gene is associated with increased plasma triglyceride levels in a French population. Arterioscler Thromb Vasc Biol 2000; 20:1330-4. [PMID: 10807750 DOI: 10.1161/01.atv.20.5.1330] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Fatty acids play important biological roles in cells. The precise mechanism whereby fatty acids cross the plasma membrane is still poorly understood. They can cross membranes because of their hydrophobic properties and/or be transported by specific proteins. Recently, a gene coding for fatty acid transport protein 1 (FATP1), an integral plasma membrane protein implicated in this process, was cloned in humans. We screened the gene by single-strand conformation polymorphism analysis and detected an A/G polymorphism in intron 8. We analyzed the potential relations of this genetic polymorphism with various obesity markers and with plasma lipid profiles in a random sample of 1144 French subjects aged 35 to 64 years. We detected statistically significant associations between this FATP1 A/G polymorphism and an increase in plasma triglyceride levels, mainly in women. These results suggest that genetic variability in the FATP1 gene may affect lipid metabolism, especially in women, and reinforce the potential implication of FATP1 in lipid homeostasis.
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Affiliation(s)
- A Meirhaeghe
- Service d'Epidémiologie et de Santé Publique, INSERM U.508, Institut Pasteur de Lille, Lille, France
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47
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Nagashima T, Maguchi S, Terayama Y, Horimoto M, Nemoto M, Nunomura M, Mori M, Seki T, Matsukawa S, Itoh T, Nagashima K. P-ANCA-positive Wegener's granulomatosis presenting with hypertrophic pachymeningitis and multiple cranial neuropathies: case report and review of literature. Neuropathology 2000; 20:23-30. [PMID: 10935433 DOI: 10.1046/j.1440-1789.2000.00282.x] [Citation(s) in RCA: 89] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
An autopsy case of hypertrophic pachymeningitis and multiple cranial neuropathies is reported. A 53-year-old woman with paraplegia and various neurological signs which developed over a 2 year period was diagnosed as having an epidural mass with thickened dura mater extending from the lower cervical to the thoracic spinal cord. In addition, bilateral episcleritis, blephaloptosis, and blindness of the right eye with various cranial nerve deficits were found to be caused by the mass lesions involving the paranasal sinuses, orbit, and the cavernous sinus. Perinuclear antineutrophil cytoplasmic antibody (p-ANCA) was positive, but cytoplasmic antineutrophil cytoplasmic antibody (c-ANCA) was negative by enzyme-linked immunosorbent assay. The partially removed epidural mass with hypertrophied dura mater and biopsy of the paranasal lesions showed chronic granulomatous inflammation with vasculitis. The remaining lesions resolved with steroid therapy with remarkable neurological improvement. The positive p-ANCA test, paranasal involvement, the report of a similar histopathological case and a review of the literature on granulomatous pachymeningitis suggest the presence of p-ANCA-positive Wegener's granulomatosis with central nervous system involvement characterized by hypertrophic pachymeningitis and/or multiple cranial neuropathies.
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Affiliation(s)
- T Nagashima
- Department of Neurology, Teine Keijinki Hospital, Sapporo, Japan
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48
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Endo T, Minami M, Kitamura N, Teramoto Y, Ogawa T, Nemoto M, Hamaue N, Hirafuji M, Yasuda E, Blower PR. Effects of various 5-HT3 receptor antagonists, granisetron, ondansetron, ramosetron and azasetron on serotonin (5-HT) release from the ferret isolated ileum. Res Commun Mol Pathol Pharmacol 2000; 104:145-55. [PMID: 10634307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
The object of this study was to evaluate the involvement of 5-HT3 receptors in the regulation of 5-HT release from the small intestine using ferrets, an animal model of emesis. 2-Methyl-5-HT, a 5-HT3 receptor agonist, produced a concentration-dependent increase of 5-HT from the ferret ileum. This increase in 5-HT release was significantly inhibited by granisetron (10(-7) and 10(-6) M) or azasetron (10(-7) and 10(-6) M) in a concentration-dependent manner. Ondansetron (10(-7) M) and ramosetron (10(-6) M) also significantly inhibited the 2-methyl-5-HT-induced increase in 5-HT release. When the concentration of ondansetron was increased from 10(-7) M to 10(-6) M, inhibition of 5-HT release was reduced. Ramosetron, for which 5-HT3 receptor binding of the rat brain is remarkably stronger than for any other 5-HT3 receptor antagonists, inhibited the 5-HT release at only the highest concentration of 10(-6) M. Based on these observations that the mode of action on the 2-methyl-5-HT induced 5-HT release is different among 5-HT3 receptor antagonists, it is suggested that there is a possibility that the neuronal 5-HT3 receptors and the 5-HT3 receptors on the EC cells may represent two distinct subtypes.
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Affiliation(s)
- T Endo
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Health Sciences, University of Hokkaido, Ishikari-Tobetsu, Japan
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Nakajima I, Yamamoto I, Kato H, Inokuchi S, Nemoto M. Study for verification testing of the helmet-mounted display in the Japanese Experimental Module. J Med Syst 2000; 24:1-9. [PMID: 10782438 DOI: 10.1023/a:1005456326419] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Our purpose is to propose a research and development project in the field of telemedicine. The proposed Multimedia Telemedicine Experiment for Extra-Vehicular Activity will entail experiments designed to support astronaut health management during Extra-Vehicular Activity (EVA). Experiments will have relevant applications to the Japanese Experimental Module (JEM) operated by National Space Development Agency of Japan (NASDA) for the International Space Station (ISS). In essence, this is a proposal for verification testing of the Helmet-Mounted Display (HMD), which enables astronauts to verify their own blood pressures and electrocardiograms, and to view a display of instructions from the ground station and listings of work procedures. Specifically, HMD is a device designed to project images and data inside the astronaut's helmet. We consider this R&D proposal to be one of the most suitable projects under consideration in response to NASDA's open invitation calling for medical experiments to be conducted on JEM.
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Affiliation(s)
- I Nakajima
- Tokai University School of Medicine, Kanagawa, Japan
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50
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Nomura Y, Fujii F, Sato C, Nemoto M, Tamura M. Exchange transfusion with fluorocarbon for studying synaptically evoked optical signal in rat cortex. Brain Res Brain Res Protoc 2000; 5:10-5. [PMID: 10719260 DOI: 10.1016/s1385-299x(99)00051-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Optical imaging of intrinsic signal is a powerful technique for studying the functional organization of the brain [T. Bonhoeffer, D. S. Kim, D. Malonek, D. Shoham, A. Grinvald, Optical imaging of the layout of functional domains in area 17 and across the area 17/18 border in cat visual cortex, Eur. J. Neurosci. 7 (1995) 1973-1988; M. Hubener, D. Shoham, A. Grinvald, T. Bonhoeffer, Spatial relationships among three columnar systems in cat area 17, J. Neurosci. 17 (1997) 9270-9284; D. Malonek, A. Grinvald, Interactions between electrical activity and cortical microcirculation revealed by imaging spectroscopy: implications for functional brain mapping, Science 272 (1996) 551-554; A. Shmuel, A. Grinvald, Functional organization for direction of motion and its relationship to orientation maps in cat area 18, J. Neurosci. 16 (1996) 6945-6964] [1] [10] [14] [22]. Three components of intrinsic optical signal can be distinguished. Two of these components can be attributed either to changes in blood volume or to changes in oxygen consumption [R.D. Frostig, E.E. Lieke, D.Y. Ts'o, A. Grinvald, Cortical functional architecture and local coupling between neuronal activity and the microcirculation revealed by in vivo high resolution optical imaging of intrinsic signals, Proc. Natl. Acad. Sci. U. S. A. 87 (1990) 6082-6086] [7]. The origin of the third component is not yet clear but the component seems to be based on scattered light [H.U. Dodt, G. D'Arcangelo, E. Pestel, W. Zieglgansberger, The spread of excitation in neocortical columns visualized with infrared-dark field videomicroscopy, NeuroReport 7 (1996) 1553-1558; K. Holthoff, O.W. Witte, Intrinsic optical signals in rat neocortical slices measured with near-infrared dark-field microscopy reveal changes in extracellular space, J. Neurosci. 16 (1996) 2740-2749; B.A. MacVicar, D. Hochman, Imaging of synaptically evoked intrinsic optical signals in hippocampal slices, J. Neurosci. 11 (1991) 1458-1469; L. Trachsel, H.U. Dodt, W. Zieglgansberger, The intrinsic optical signal evoked by chiasm stimulation in the rat suprachiasmatic nuclei exhibits GABAergic day-night variation, Eur. J. Neurosci. 8 (1996) 319-328] [3] [9] [13] [24]. A spectral fitting method with three components is used for the analysis of intrinsic optical signal [M. Nemoto, Y. Nomura, C. Sato, M. Tamura, K. Houkin, I. Koyanagi, H. Abe, Analysis of optical signals evoked by peripheral nerve stimulation in rat somatosensory cortex: dynamic changes in hemoglobin concentration and oxygenation, J. Cereb. Blood Flow Metab. 19 (1999) 246-259] [17]. In order to validate the analysis, we need the knowledge on contribution of signal resulted from hemoglobin to total intrinsic optical signal. The exchange transfusion with fluorocarbon has the advantage that can change the spectral contribution of hemoglobin [M. Ferrari, M.A. Williams, D.A. Wilson, N.V. Thakor, R.J. Traystman, D.F. Hanley, Cat brain cytochrome-c oxidase redox changes induced by hypoxia after blood-fluorocarbon exchange transfusion, Am. J. Physiol. 269 (1995) H417-H424; A.L. Sylvia, C.A. Piantadosi, O(2) dependence of in vivo brain cytochrome redox responses and energy metabolism in bloodless rats, J. Cereb. Blood Flow Metab. 8 (1988) 163-172] [6] [23]. Here we describe a new method of the reduction of hemoglobin signal from somatosensory evoked optical intrinsic signal in rat cortex by the combination of exchange transfusion with fluorocarbon and imaging system of thinned skull cranial window. The method allows for the study of the synaptically evoked changes in light scattering as well as fluorescence of calcium indicator or voltage-sensitive dye without absorption of hemoglobin.
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Affiliation(s)
- Y Nomura
- Biophysics Division, Research Institute for Electronic Science, Hokkaido University, Sapporo, Japan.
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