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Watanabe S, Urikura A, Ohashi K, Kitera N, Tsuchiya T, Kasai H, Kawai T, Hiwatashi A. Artifact reduction in low and ultra-low dose chest computed tomography for patients with pacemaker: A phantom study. Radiography (Lond) 2024; 30:770-775. [PMID: 38460224 DOI: 10.1016/j.radi.2024.02.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 02/06/2024] [Accepted: 02/23/2024] [Indexed: 03/11/2024]
Abstract
INTRODUCTION Implanted pacemakers (PM) would decrease the detection of lung nodules in chest computed tomography (CT) due to the metal artifact. This study aimed to explore the computer-aided diagnosis (CAD) detectability of pulmonary nodules for the patients implanted with PMs in low- and ultra-low-dose chest CT screening. METHODS Four different sizes of artificial nodules were placed in an anthropomorphic chest phantom with two alternative diameters utilized. A commercially available PM was placed on the surface of the left chest wall of the phantom. The image acquisitions were performed with 120 kV and 150 kV with a dedicated selective photon shield made of tin filter (Sn150 kV) at low- and ultra-low- radiation doses (1.0 and 0.5 mGy of volume CT dose index), and reconstructed with and without Iterative Metal Artifact Reduction (iMAR, Siemens Healthineers, Erlangen, Germany). The relative artifact index (AIr) was calculated as an index of metal artifacts, and the nodule detectability was evaluated with a CAD system. RESULTS Sn150 kV reduced AIr in all acquisitions when comparing 120 kV and Sn150 kV. Although PM reduced the detectability of nodules, Sn150 kV showed higher detectability compared to 120 kV. The use of iMAR showed inconsistent results in nodule detectability. CONCLUSION Sn150 kV reduced PM-induced metal artifacts and improved nodule detectability with CAD compared to 120 kV acquisition in many conditions including low and ultra-low doses and large phantoms, but iMAR did not improve the detectability. IMPLICATIONS FOR PRACTICE Based on the results of the current phantom study, low and ultra-low dose with Sn150 kV acquisition reduced PM-induced metal artifacts and improved nodule detectability.
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Affiliation(s)
- S Watanabe
- Department of Radiology, Nagoya City University Hospital, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, Aichi 467-0001, Japan.
| | - A Urikura
- Department of Radiological Technology, Radiological Diagnosis, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan.
| | - K Ohashi
- Department of Radiology, Nagoya City University Midori Municipal Hospital, 1-77 Shiomigaoka, Midori-ku, Nagoya, Aichi, 458-0037, Japan; Department of Radiology, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, Aichi 467-0001, Japan.
| | - N Kitera
- Department of Radiology, Nagoya City University Hospital, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, Aichi 467-0001, Japan.
| | - T Tsuchiya
- Department of Radiology, Nagoya City University Hospital, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, Aichi 467-0001, Japan.
| | - H Kasai
- Department of Radiology, Nagoya City University Hospital, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, Aichi 467-0001, Japan.
| | - T Kawai
- Department of Radiology, Nagoya City University Midori Municipal Hospital, 1-77 Shiomigaoka, Midori-ku, Nagoya, Aichi, 458-0037, Japan; Department of Radiology, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, Aichi 467-0001, Japan.
| | - A Hiwatashi
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, Aichi 467-0001, Japan.
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Namiki W, Nishioka D, Tsuchiya T, Higuchi T, Terabe K. Magnetization Vector Rotation Reservoir Computing Operated by Redox Mechanism. Nano Lett 2024; 24:4383-4392. [PMID: 38513213 DOI: 10.1021/acs.nanolett.3c05029] [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] [Subscribe] [Scholar Register] [Indexed: 03/23/2024]
Abstract
Physical reservoir computing is a promising way to develop efficient artificial intelligence using physical devices exhibiting nonlinear dynamics. Although magnetic materials have advantages in miniaturization, the need for a magnetic field and large electric current results in high electric power consumption and a complex device structure. To resolve these issues, we propose a redox-based physical reservoir utilizing the planar Hall effect and anisotropic magnetoresistance, which are phenomena described by different nonlinear functions of the magnetization vector that do not need a magnetic field to be applied. The expressive power of this reservoir based on a compact all-solid-state redox transistor is higher than the previous physical reservoir. The normalized mean square error of the reservoir on a second-order nonlinear equation task was 1.69 × 10-3, which is lower than that of a memristor array (3.13 × 10-3) even though the number of reservoir nodes was fewer than half that of the memristor array.
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Affiliation(s)
- Wataru Namiki
- Research Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Daiki Nishioka
- Research Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Department of Applied Physics, Faculty of Science, Tokyo University of Science, 6-3-1 Niijuku, Katsushika, Tokyo 125-8585, Japan
| | - Takashi Tsuchiya
- Research Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Tohru Higuchi
- Department of Applied Physics, Faculty of Science, Tokyo University of Science, 6-3-1 Niijuku, Katsushika, Tokyo 125-8585, Japan
| | - Kazuya Terabe
- Research Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
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Nishioka D, Shingaya Y, Tsuchiya T, Higuchi T, Terabe K. Few- and single-molecule reservoir computing experimentally demonstrated with surface-enhanced Raman scattering and ion gating. Sci Adv 2024; 10:eadk6438. [PMID: 38416821 PMCID: PMC10901377 DOI: 10.1126/sciadv.adk6438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Accepted: 01/23/2024] [Indexed: 03/01/2024]
Abstract
Molecule-based reservoir computing (RC) is promising for achieving low power consumption neuromorphic computing, although the information-processing capability of small numbers of molecules is not clear. Here, we report a few- and single-molecule RC that uses the molecular vibration dynamics in the para-mercaptobenzoic acid (pMBA) detected by surface-enhanced Raman scattering (SERS) with tungsten oxide nanorod/silver nanoparticles. The Raman signals of the pMBA molecules, adsorbed at the SERS active site of the nanorod, were reversibly perturbated by the application of voltage-induced local pH changes near the molecules, and then used to perform time-series analysis tasks. Despite the small number of molecules used, our system achieved good performance, including >95% accuracy in various nonlinear waveform transformations, 94.3% accuracy in solving a second-order nonlinear dynamic system, and a prediction error of 25.0 milligrams per deciliter in a 15-minute-ahead blood glucose level prediction. Our work provides a concept of few-molecular computing with practical computation capabilities.
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Affiliation(s)
- Daiki Nishioka
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Department of Applied Physics, Faculty of Science, Tokyo University of Science, 6-3-1 Niijuku, Katsushika, Tokyo 125-8585, Japan
| | - Yoshitaka Shingaya
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Takashi Tsuchiya
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Tohru Higuchi
- Department of Applied Physics, Faculty of Science, Tokyo University of Science, 6-3-1 Niijuku, Katsushika, Tokyo 125-8585, Japan
| | - Kazuya Terabe
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
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Ariake K, Okada T, Tsuchiya H, Kuboki D, Maemura K, Ichikawa H, Tachibana T, Akazawa N, Abe T, Kakita T, Oikawa M, Tsuchiya T. ASO Author Reflections: Postoperative Carbohydrate Antigen 19-9 Levels Become a Reliable Biomarker for Establishing Intensity-Stratified Adjuvant Treatments in Pancreatic Ductal Adenocarcinoma. Ann Surg Oncol 2024; 31:548-549. [PMID: 37907696 DOI: 10.1245/s10434-023-14506-z] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 10/10/2023] [Indexed: 11/02/2023]
Affiliation(s)
- Kyohei Ariake
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan.
| | - Takaho Okada
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Haruyuki Tsuchiya
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Daiki Kuboki
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Kimiya Maemura
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Hidetaka Ichikawa
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Tomoyoshi Tachibana
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Naoya Akazawa
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Tomoya Abe
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Tetsuya Kakita
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Masaya Oikawa
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Takashi Tsuchiya
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
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Ariake K, Okada T, Tsuchiya H, Kuboki D, Maemura K, Okada Y, Ichikawa H, Tachibana T, Akazawa N, Abe T, Kakita T, Oikawa M, Tsuchiya T. Postoperative Carbohydrate Antigen 19-9 Level as a Good Indicator of Ineffective Response to the Currently Recommended S-1 Adjuvant Chemotherapy for Pancreatic Ductal Adenocarcinoma: A Single-Center, Retrospective Study. Ann Surg Oncol 2024; 31:525-534. [PMID: 37851194 DOI: 10.1245/s10434-023-14440-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 09/27/2023] [Indexed: 10/19/2023]
Abstract
PURPOSE The intensity of adjuvant treatment for pancreatic ductal adenocarcinomas (PDACs) has not been stratified according to the risk after resection. This study was designed to identify patients with PDACs in whom the current S-1 adjuvant treatment is ineffective. METHODS This single-center, retrospective study included patients who underwent pancreatectomy for PDACs from 2009 to 2020 at Sendai Open Hospital and were receiving S-1 adjuvant treatment. The independent risk factors for recurrence and survival were determined by using a Cox proportional hazards regression model. The effects of S-1 adjuvant treatment and detailed patterns of recurrence were evaluated in patients with high-risk factors. RESULTS Overall, 118 patients with PDAC received S-1 adjuvant treatment. Postoperative nonnormalized carbohydrate antigen (CA19-9) was a predictive risk factor for recurrence (p < 0.010; hazard ratio [HR], 3.87; 95% confidence interval [CI], 2.26-6.62) and survival (p = 0.008; HR, 2.25; 95% CI, 1.24-4.11) after S-1 adjuvant treatment. In 24 patients with nonnormalized postoperative CA19-9, S-1 monotherapy was ineffective in preventing recurrence, even during the treatment period, compared with that noted in patients who did not receive adjuvant treatment. The recurrence rate during adjuvant treatment was 41.7%; in all cases, recurrence was caused by distant metastasis. The total recurrence rate was up to 95.8%, and distant recurrence was especially frequent. CONCLUSIONS The current S-1 adjuvant treatment regimen is ineffective for patients with postoperative nonnormalized CA19-9. The postoperative CA19-9 level may be a good indicator for further aggressive treatment. This study may lead to further discussions on intensity stratification of adjuvant treatments for PDAC.
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Affiliation(s)
- Kyohei Ariake
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan.
| | - Takaho Okada
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Haruyuki Tsuchiya
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Daiki Kuboki
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Kimiya Maemura
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Yuki Okada
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Hidetaka Ichikawa
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Tomoyoshi Tachibana
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Naoya Akazawa
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Tomoya Abe
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Tetsuya Kakita
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Masaya Oikawa
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Takashi Tsuchiya
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
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Shibata K, Nishioka D, Namiki W, Tsuchiya T, Higuchi T, Terabe K. Redox-based ion-gating reservoir consisting of (104) oriented LiCoO 2 film, assisted by physical masking. Sci Rep 2023; 13:21060. [PMID: 38030675 PMCID: PMC10687094 DOI: 10.1038/s41598-023-48135-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 11/21/2023] [Indexed: 12/01/2023] Open
Abstract
Reservoir computing (RC) is a machine learning framework suitable for processing time series data, and is a computationally inexpensive and fast learning model. A physical reservoir is a hardware implementation of RC using a physical system, which is expected to become the social infrastructure of a data society that needs to process vast amounts of information. Ion-gating reservoirs (IGR) are compact and suitable for integration with various physical reservoirs, but the prediction accuracy and operating speed of redox-IGRs using WO3 as the channel are not sufficient due to irreversible Li+ trapping in the WO3 matrix during operation. Here, in order to enhance the computation performance of redox-IGRs, we developed a redox-based IGR using a (104) oriented LiCoO2 thin film with high electronic and ionic conductivity as a trap-free channel material. The subject IGR utilizes resistance change that is due to a redox reaction (LiCoO2 ⟺ Li1-xCoO2 + xLi+ + xe-) with the insertion and desertion of Li+. The prediction error in the subject IGR was reduced by 72% and the operation speed was increased by 4 times compared to the previously reported WO3, which changes are due to the nonlinear and reversible electrical response of LiCoO2 and the high dimensionality enhanced by a newly developed physical masking technique. This study has demonstrated the possibility of developing high-performance IGRs by utilizing materials with stronger nonlinearity and by increasing output dimensionality.
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Affiliation(s)
- Kaoru Shibata
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
- Department of Applied Physics, Faculty of Science, Tokyo University of Science, 6-3-1 Niijuku, Katsushika, Tokyo, 125-8585, Japan
| | - Daiki Nishioka
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
- Department of Applied Physics, Faculty of Science, Tokyo University of Science, 6-3-1 Niijuku, Katsushika, Tokyo, 125-8585, Japan
| | - Wataru Namiki
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Takashi Tsuchiya
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan.
- Department of Applied Physics, Faculty of Science, Tokyo University of Science, 6-3-1 Niijuku, Katsushika, Tokyo, 125-8585, Japan.
| | - Tohru Higuchi
- Department of Applied Physics, Faculty of Science, Tokyo University of Science, 6-3-1 Niijuku, Katsushika, Tokyo, 125-8585, Japan
| | - Kazuya Terabe
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
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Sugimoto K, Sakamoto K, Tsuchiya T, Takahashi T, Ohge H, Sato T, Taguri M, Morita S, Sadahiro S. Prognostic factors in patients with high-risk stage II colon cancer after curative resection: a post hoc analysis of the JFMC46-1201 trial. Int J Colorectal Dis 2023; 38:260. [PMID: 37903983 PMCID: PMC10615946 DOI: 10.1007/s00384-023-04559-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/26/2023] [Indexed: 11/01/2023]
Abstract
PURPOSE The goal of the current study was to identify prognostic factors for disease-free survival (DFS) and overall survival (OS) in high-risk stage II colon cancer. METHODS The subjects were patients with histologically confirmed stage II colon cancer undergoing R0 resection who met at least one of the following criteria: T4, perforation/penetration, poorly differentiated adenocarcinoma, mucinous carcinoma, and < 12 examined lymph nodes. Patients self-selected surgery alone or a 6-month oral uracil and tegafur plus leucovorin (UFT/LV) regimen. Serum CEA mRNA at ≥ 24 h after surgery and < 2 weeks after registration was also examined as a potential prognostic factor for stage II colon cancer. This study is registered with UMIN-CTR (protocol ID: UMIN000007783). RESULTS 1880 were included in the analysis to identify prognostic factors for DFS and OS in patients with high-risk stage II colon cancer. In multivariate analyses, gender, depth of tumor invasion, extent of lymph node dissection, number of examined lymph nodes, and postoperative adjuvant chemotherapy (POAC) emerged as significant independent prognostic factors for DFS. Similarly, multivariate analysis showed that age, gender, depth of tumor invasion, perforation/penetration, extent of lymph node dissection, number of examined lymph nodes, and POAC were significant independent prognostic factors for OS. Univariate analyses showed no significant difference in DFS or OS for CEA mRNA-positive and mRNA-negative cases. CONCLUSION This study showed that gender, depth of tumor invasion, extent of lymph node dissection, number of examined lymph nodes, and lack of use of POAC were significant independent prognostic factors in stage II colon cancer.
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Affiliation(s)
- Kiichi Sugimoto
- Department of Coloproctological Surgery, Juntendo University, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan
| | - Kazuhiro Sakamoto
- Department of Coloproctological Surgery, Juntendo University, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan.
| | - Takashi Tsuchiya
- Department of Surgery, Sendai City Medical Center, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, Miyagi, 983-0824, Japan
| | - Takao Takahashi
- Department of Digestive Surgery, Gifu University Hospital, 1-1 Yanagido, Gifu, 501-1194, Japan
| | - Hiroki Ohge
- Department of Infectious Diseases, Hiroshima University Hospital, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Toshihiko Sato
- Department of Surgery, Yamagata Prefectural Central Hospital, 1800 Aoyagi, Yamagata, 990-2292, Japan
| | - Masataka Taguri
- Department of Health Data Science, Tokyo Medical University, 6-1-1 Shinjuku, Shinju-ku, Tokyo, 160-8402, Japan
| | - Satoshi Morita
- Department of Biomedical Statistics and Bioinformatics, Kyoto University, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Sotaro Sadahiro
- Department of Surgery, Tokai University, 143 Shimokasuya, Isehara, Kanagawa, 259-1193, Japan
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Mallik S, Tsuruoka T, Tsuchiya T, Terabe K. Effects of Mg Doping to a LiCoO 2 Channel on the Synaptic Plasticity of Li Ion-Gated Transistors. ACS Appl Mater Interfaces 2023; 15:47184-47195. [PMID: 37768881 DOI: 10.1021/acsami.3c07833] [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] [Subscribe] [Scholar Register] [Indexed: 09/30/2023]
Abstract
Artificial synapses with ideal functionalities are essential in hardware neural networks to allow for energy-efficient analog computing. However, the realization of linear and symmetric weight updates in real synaptic devices has proven challenging and ultimately limits the online training capabilities of neural network systems. Herein, we investigate the effect of Mg doping on a LiCoO2 (LCO) channel in a Li ion-gated synaptic transistor, so as to improve long-term and short-term plasticity. Two transistor structures, based on a lithium phosphorus oxynitride electrolyte, were examined by using undoped LCO and Mg-doped LCO as the channel material between the source and drain electrodes. It was found that Mg doping increased the initial channel conductance by 3 orders of magnitude, which is probably due to the substitution of Co3+ by Mg2+ and the compensation of hole creation. It was further found that the doped channel transistor showed good retention characteristics and better linearity of long-term potentiation and depression when voltage pulses were applied to the gate electrode. The improved retention and linearity are attributed to an extended range of the insulator-to-conductor transition by Mg doping and Li-ion extraction/insertion cooperated in the LCO channel. Using the obtained synaptic weight update, artificial neural network simulations demonstrated that the doped channel transistor shows an image recognition accuracy of ∼80% for handwritten digits, which is higher than ∼65% exhibited by the undoped channel transistor. Mg doping also improved short-term plasticity such as paired-pulse facilitation/depression and Hebbian spike timing-dependent plasticity. These results indicate that elemental doping to the channel of Li ion-gated synaptic transistors could be a useful procedure for realizing robust neuromorphic systems based on analog computing.
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Affiliation(s)
- Samapika Mallik
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science, Namiki 1-1, Tsukuba, 305-0044, Japan
| | - Tohru Tsuruoka
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science, Namiki 1-1, Tsukuba, 305-0044, Japan
| | - Takashi Tsuchiya
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science, Namiki 1-1, Tsukuba, 305-0044, Japan
| | - Kazuya Terabe
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science, Namiki 1-1, Tsukuba, 305-0044, Japan
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Inui S, Tomita N, Takaoka T, Ueda Y, Ohira S, Tsuchiya T, Miyazaki M, Nishio T, Koizumi M, Konishi K. Dosimetric Comparison of Automated Non-Coplanar Volumetric-Modulated Arc Therapy and Intensity-Modulated Proton Therapy in Angiosarcoma of the Scalp. Int J Radiat Oncol Biol Phys 2023; 117:e675. [PMID: 37785989 DOI: 10.1016/j.ijrobp.2023.06.2128] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Angiosarcoma of the scalp (AS) is a rare tumor and has often been treated by total scalp irradiation (TSI). TSI is a challenging technique because of the target close to the organs at risks (OARs), located in the skin surface, and helmet-shape of the target. We performed the dosimetric comparison of automated non-coplanar volumetric-modulated arc therapy (HA) and intensity-modulated proton therapy (IMPT) in TSI for AS. MATERIALS/METHODS A planning study was performed on 20 patients with AS. The clinical target volume (CTV) 1 and CTV2 were defined as gross tumor volume with margin and entire scalp, respectively. For HA, planning target volume (PTV) 1 and PTV2 were defined as CTV1 and CTV2 with 5-mm margins, respectively. For IMPT, robust optimization was utilized which accounted for a 5-mm setup and a 3.5% range uncertainty and dose was prescribed to CTV1 robust and CTV2 robust. The prescription doses were 70 Gy and 56 Gy in 35 fractions to PTV1 (CTV1 robust) and PTV2 (CTV2 robust), respectively, using the simultaneous integrated boost technique. The HA plan was performed using a 6-MV photon beam machine and a 1-cm thick virtual bolus. The HA plan included three half non-coplanar and one full coplanar arc fields. The HA plan used collimator angles of 15°, 60°, 15°, and 120° in the beam with couch rotations of 0°, 45°, 90°, and 315°, respectively. The IMPT plan was performed using a compact proton beam machine dedicated to pencil beam scanning. The IMPT plan used gantry angles of 70°, 150°, 70°, 150°, and 30° in the beam with couch rotations of 0°, 0°, 180°, 180°, and 270°, respectively. The IMPT plan was optimized assuming a relative biological effectiveness of 1.1. The dose distribution and dosimetric parameters for each plan were evaluated. RESULTS All plans met the goals within the acceptable range in target volume coverage, conformity, and homogeneity. Table shows the dosimetric parameters of OARs in HA and IMPT plans. The doses receiving 0.1 cc of the volume for hippocampus, optic passway, eye, and lens in the IMPT plan were significantly lower than those in the HA plan. The IMPT plan showed a significant reduction in the percentage of brain volume receiving at least 5 Gy (V5 Gy) compared to the HA plan, while the HA plan showed a significant reduction of V10 Gy - V60 Gy and mean brain dose compared to the IMPT plan. The HA plan provided a shorter beam-on time (184 ± 9 s) than did the IMPT plan (446 ± 49 s). CONCLUSION The HA and IMPT plans demonstrated different strengths with respect to OARs sparing.
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Affiliation(s)
- S Inui
- Department of Radiation Oncology, Osaka International Cancer Institute, Osaka, Japan; Department of Medical Physics and Engineering, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - N Tomita
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - T Takaoka
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Y Ueda
- Department of Radiation Oncology, Osaka International Cancer Institute, Osaka, Japan
| | - S Ohira
- Department of Radiation Oncology, Osaka International Cancer Institute, Osaka, Japan
| | - T Tsuchiya
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - M Miyazaki
- Department of Radiation Oncology, Osaka International Cancer Institute, Osaka, Japan
| | - T Nishio
- Department of Medical Physics and Engineering, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - M Koizumi
- Department of Medical Physics and Engineering, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - K Konishi
- Department of Radiation Oncology, Osaka International Cancer Institute, Osaka, Japan
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10
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Kawakami Y, Koshita S, Kanno Y, Ogawa T, Kusunose H, Sakai T, Yonamine K, Miyamoto K, Kozakai F, Okada T, Oikawa M, Tsuchiya T, Noda Y, Sawai T, Nakase H, Ito K. Pancreatic ductal adenocarcinomas concomitant with intraductal papillary mucinous neoplasms of the pancreas: A investigation of those clinicopathological features by analyzing 48 patients who underwent surgery for those lesions. Pancreatology 2023; 23:674-681. [PMID: 37604732 DOI: 10.1016/j.pan.2023.07.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 07/26/2023] [Accepted: 07/31/2023] [Indexed: 08/23/2023]
Abstract
BACKGROUND Differences between pancreatic ductal adenocarcinomas (PDACs) concomitant with intraductal papillary mucinous neoplasm (IPMN) (C-PDACs), those without IPMN (NC-PDACs) and invasive cancers derived from IPMN (IC-Ds) have not been fully clarified. METHODS Forty-eight patients with C-PDAC were included to investigate the differences in 1) clinicopathological features and 2) post-operative courses among the three invasive cancer groups. RESULTS 1) Characteristics of C-PDACs were mostly similar to those of NC-PDACs; whereas, between C-PDACs and IC-Ds, the rate of mucinous carcinoma (2%/25%, p = 0.003) and pathological stage (IA, 15%/36%, p = 0.033; III, 31%/4%, p = 0.015) significantly differed. Most C-PDACs coexisted with small, multifocal IPMNs without mural nodules. 2) Cumulative 5-year recurrence-free survival (RFS) rate related to extra-pancreatic recurrence was significantly worse in C-PDACs than in IC-Ds (35%/69%, p = 0.008) and was not significantly different between C-PDACs and NC-PDACs (35%/18%). This related to intra-pancreatic recurrence tended to be poor in the order of IC-Ds, C-PDACs, and NC-PDACs (69%/82%/93%). CONCLUSIONS Because characteristics of IPMNs remarkably differed between C-PDACs and IC-Ds, another algorithm specific to the early detection of C-PDACs is necessary. Appropriate post-operative managements according to the two types of recurrences may contribute to the improvement in the prognoses of C-PDACs/IC-Ds.
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Affiliation(s)
- Yujiro Kawakami
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan; Department of Gastroenterology and Hepatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Shinsuke Koshita
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan.
| | - Yoshihide Kanno
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Takahisa Ogawa
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Hiroaki Kusunose
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Toshitaka Sakai
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Keisuke Yonamine
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Kazuaki Miyamoto
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Fumisato Kozakai
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Takaho Okada
- Department of Surgery, Sendai City Medical Center, Sendai, Japan
| | - Masaya Oikawa
- Department of Surgery, Sendai City Medical Center, Sendai, Japan
| | - Takashi Tsuchiya
- Department of Surgery, Sendai City Medical Center, Sendai, Japan
| | - Yutaka Noda
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan; Department of Pathology, Sendai City Medical Center, Sendai, Japan
| | - Takashi Sawai
- Department of Pathology, Sendai City Medical Center, Sendai, Japan
| | - Hiroshi Nakase
- Department of Gastroenterology and Hepatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Kei Ito
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
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11
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Wang Z, Kim SY, Tu W, Kim J, Xu A, Yang YM, Matsuda M, Reolizo L, Tsuchiya T, Billet S, Gangi A, Noureddin M, Falk BA, Kim S, Fan W, Tighiouart M, You S, Lewis MS, Pandol SJ, Di Vizio D, Merchant A, Posadas EM, Bhowmick NA, Lu SC, Seki E. Extracellular vesicles in fatty liver promote a metastatic tumor microenvironment. Cell Metab 2023; 35:1209-1226.e13. [PMID: 37172577 PMCID: PMC10524732 DOI: 10.1016/j.cmet.2023.04.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 02/20/2023] [Accepted: 04/13/2023] [Indexed: 05/15/2023]
Abstract
Liver metastasis is a major cause of death in patients with colorectal cancer (CRC). Fatty liver promotes liver metastasis, but the underlying mechanism remains unclear. We demonstrated that hepatocyte-derived extracellular vesicles (EVs) in fatty liver enhanced the progression of CRC liver metastasis by promoting oncogenic Yes-associated protein (YAP) signaling and an immunosuppressive microenvironment. Fatty liver upregulated Rab27a expression, which facilitated EV production from hepatocytes. In the liver, these EVs transferred YAP signaling-regulating microRNAs to cancer cells to augment YAP activity by suppressing LATS2. Increased YAP activity in CRC liver metastasis with fatty liver promoted cancer cell growth and an immunosuppressive microenvironment by M2 macrophage infiltration through CYR61 production. Patients with CRC liver metastasis and fatty liver had elevated nuclear YAP expression, CYR61 expression, and M2 macrophage infiltration. Our data indicate that fatty liver-induced EV-microRNAs, YAP signaling, and an immunosuppressive microenvironment promote the growth of CRC liver metastasis.
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Affiliation(s)
- Zhijun Wang
- Karsh Division of Gastroenterology and Hepatology, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - So Yeon Kim
- Karsh Division of Gastroenterology and Hepatology, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Wei Tu
- Karsh Division of Gastroenterology and Hepatology, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; Division of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030 China
| | - Jieun Kim
- Karsh Division of Gastroenterology and Hepatology, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Alexander Xu
- Division of Hematology and Oncology, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Yoon Mee Yang
- Karsh Division of Gastroenterology and Hepatology, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; Department of Pharmacy, Kangwon National University, Chuncheon 24341, South Korea
| | - Michitaka Matsuda
- Karsh Division of Gastroenterology and Hepatology, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Lien Reolizo
- Karsh Division of Gastroenterology and Hepatology, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Takashi Tsuchiya
- Karsh Division of Gastroenterology and Hepatology, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Sandrine Billet
- Division of Hematology and Oncology, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Alexandra Gangi
- Department of Surgery, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Mazen Noureddin
- Karsh Division of Gastroenterology and Hepatology, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; Houston Methodist Hospital, Houston Research Institute, Houston, TX 77030, USA
| | - Ben A Falk
- Division of Hematology and Oncology, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Sungjin Kim
- Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Wei Fan
- Karsh Division of Gastroenterology and Hepatology, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Mourad Tighiouart
- Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Sungyong You
- Department of Surgery, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Michael S Lewis
- Division of Hematology and Oncology, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; Department of Pathology, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; Department of Pathology, Veterans Affairs Greater Los Angeles Health Care System, Los Angeles, CA 90073, USA
| | - Stephen J Pandol
- Karsh Division of Gastroenterology and Hepatology, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Dolores Di Vizio
- Department of Surgery, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Akil Merchant
- Division of Hematology and Oncology, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Edwin M Posadas
- Division of Hematology and Oncology, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Neil A Bhowmick
- Division of Hematology and Oncology, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Shelly C Lu
- Karsh Division of Gastroenterology and Hepatology, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Ekihiro Seki
- Karsh Division of Gastroenterology and Hepatology, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA.
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12
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Kudamatsu H, Kawashiri T, Mine K, Mori K, Inoue M, Ishida H, Uchida M, Tsuchiya T, Kobayashi D, Shimazoe T. Ameliorating effects of cystine and theanine in a cancer cachexia mouse model. J Pharmacol Sci 2023; 152:163-166. [PMID: 37257943 DOI: 10.1016/j.jphs.2023.04.008] [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: 11/09/2022] [Revised: 03/18/2023] [Accepted: 04/20/2023] [Indexed: 06/02/2023] Open
Abstract
Cachexia is a common cancer complication and is associated with weight loss and anorexia. In this study, we investigated the ameliorating effects of cystine and theanine on cancer cachexia using a mouse model. In mice carrying the colon cancer cell line C-26, there was a suppression of body weight increase and reduction in both internal fat and lower limb muscles. Repeated cystine and theanine administration significantly prevented weight loss, internal fat loss, lower limb muscle loss, and serum IL-6 increase in the cachexia model. These results suggested that cystine and theanine may be effective in ameliorating cancer cachexia.
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Affiliation(s)
- Hibiki Kudamatsu
- Department of Clinical Pharmacy and Pharmaceutical Care, Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Takehiro Kawashiri
- Department of Clinical Pharmacy and Pharmaceutical Care, Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan.
| | - Keisuke Mine
- Department of Clinical Pharmacy and Pharmaceutical Care, Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan; Department of Glocal Healthcare Science, Faculty of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Kohei Mori
- Department of Clinical Pharmacy and Pharmaceutical Care, Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Mizuki Inoue
- Department of Clinical Pharmacy and Pharmaceutical Care, Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Haruna Ishida
- Department of Clinical Pharmacy and Pharmaceutical Care, Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Mayako Uchida
- Department of Education and Research Center for Pharmacy Practice, Faculty of Pharmaceutical Sciences, Doshisha Women's College of Liberal Arts, 97-1, Kodominamihokotate, Kyotanabe-shi, Kyoto, 610-0395 Japan
| | - Takashi Tsuchiya
- Department of Surgery, Sendai City Medical Center, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Daisuke Kobayashi
- Department of Clinical Pharmacy and Pharmaceutical Care, Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Takao Shimazoe
- Department of Clinical Pharmacy and Pharmaceutical Care, Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
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13
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Matsuu-Matsuyama M, Shichijo K, Tsuchiya T, Nakashima M. The effects of cystine and theanine mixture on the chronic survival rate and tumor incidence of rats after total body X-ray irradiation†. J Radiat Res 2023:rrad047. [PMID: 37336495 DOI: 10.1093/jrr/rrad047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 04/03/2023] [Indexed: 06/21/2023]
Abstract
Cystine and theanine (CT), an amino acid mixture, provides the substrates cysteine and glutamic acid that promote glutathione synthesis. We previously reported that CT pre-treatment significantly improved the acute survival rate and reduced acute radiation injury of the small intestine and bone marrow of rats after 5 Gy of total body X-ray irradiation. To examine the long-term effects of CT administration after irradiation, we investigated the effects of CT pre-treatment and pre- and post-treatment on the chronic survival rate and solid tumor (spleen, skin and subcutis, and thyroid) incidence after irradiation using 7-week-old male Wistar rats. CT pre-treatment of 280 mg/kg was administered orally for 5 days before 5 Gy irradiation, and CT pre- and post-treatment was administered 5 days before and 5 days after irradiation. A 0.5% carboxymethyl cellulose solution was administered as a control. The chronic survival rate of the pre-treated rats was higher than that of the control rats at 441 days after irradiation (40 vs 8.1%, P = 0.011). However, the survival rate did not significantly differ between the pre- and post-treatment and control rats at 467 days after irradiation (33.8 vs 30.2%, P = 0.792). In addition, more solid tumors, especially subcutis sarcomas, were observed in the pre-treatment rats (26.1%, 6/23) than in the control rats (4.5%, 1/22) after irradiation. Therefore, pre-administration of CT improves the chronic survival rate after irradiation; however, the occurrence of solid tumors was not suppressed.
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Affiliation(s)
- Mutsumi Matsuu-Matsuyama
- Division of Strategic Collaborative Research, Center for Promotion of Collaborative Research on Radiation and Environment Health Effects, Atomic Bomb Disease Institute, Nagasaki University, 1-12-4 Sakamoto, Nagasaki, Nagasaki 852-8523, Japan
| | - Kazuko Shichijo
- Department of Tumor and Diagnostic Pathology, Atomic Bomb Disease Institute, Nagasaki University, 1-12-4 Sakamoto, Nagasaki, Nagasaki 852-8523, Japan
| | - Takashi Tsuchiya
- Department of Surgery, Sendai City Medical Center, 5-22-1 Tsurugaya, Miyagino, Sendai, Miyagi 983-0824, Japan
| | - Masahiro Nakashima
- Department of Tumor and Diagnostic Pathology, Atomic Bomb Disease Institute, Nagasaki University, 1-12-4 Sakamoto, Nagasaki, Nagasaki 852-8523, Japan
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14
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Yonamine K, Koshita S, Kanno Y, Ogawa T, Kusunose H, Sakai T, Miyamoto K, Kozakai F, Anan H, Okano H, Oikawa M, Tsuchiya T, Sawai T, Noda Y, Ito K. Diagnostic value of homogenous delayed enhancement in contrast-enhanced computed tomography images and endoscopic ultrasound-guided tissue acquisition for patients with focal autoimmune pancreatitis. Clin Endosc 2023:ce.2022.142. [PMID: 37032116 PMCID: PMC10393566 DOI: 10.5946/ce.2022.142] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 07/27/2022] [Indexed: 04/11/2023] Open
Abstract
Background/Aims We aimed to investigate (1) promising clinical findings for the recognition of focal type autoimmune pancreatitis (FAIP) and (2) the impact of endoscopic ultrasound (EUS)-guided tissue acquisition (EUS-TA) on the diagnosis of FAIP. Methods Twenty-three patients with FAIP were involved in this study, and 44 patients with resected pancreatic ductal adenocarcinoma (PDAC) were included in the control group. Results (1) Multivariate analysis revealed that homogeneous delayed enhancement on contrast-enhanced computed tomography was a significant factor indicative of FAIP compared to PDAC (90% vs. 7%, p=0.015). (2) For 13 of 17 FAIP patients (76.5%) who underwent EUS-TA, EUS-TA aided the diagnostic confirmation of AIPs, and only one patient (5.9%) was found to have AIP after surgery. On the other hand, of the six patients who did not undergo EUS-TA, three (50.0%) underwent surgery for pancreatic lesions. Conclusions Homogeneous delayed enhancement on contrast-enhanced computed tomography was the most useful clinical factor for discriminating FAIPs from PDACs. EUS-TA is mandatory for diagnostic confirmation of FAIP lesions and can contribute to a reduction in the rate of unnecessary surgery for patients with FAIP.
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Affiliation(s)
- Keisuke Yonamine
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Shinsuke Koshita
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Yoshihide Kanno
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Takahisa Ogawa
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Hiroaki Kusunose
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Toshitaka Sakai
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Kazuaki Miyamoto
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Fumisato Kozakai
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Hideyuki Anan
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Haruka Okano
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Masaya Oikawa
- Department of Gastroenterological Surgery, Sendai City Medical Center, Sendai, Japan
| | - Takashi Tsuchiya
- Department of Gastroenterological Surgery, Sendai City Medical Center, Sendai, Japan
| | - Takashi Sawai
- Department of Pathology, Sendai City Medical Center, Sendai, Japan
| | - Yutaka Noda
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
- Department of Pathology, Sendai City Medical Center, Sendai, Japan
| | - Kei Ito
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
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15
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Sato R, Oikawa M, Kakita T, Okada T, Abe T, Tsuchiya H, Akazawa N, Ohira T, Harada Y, Okano H, Ito K, Tsuchiya T. A decreased preoperative platelet-to-lymphocyte ratio, systemic immune-inflammation index, and pan-immune-inflammation value are associated with the poorer survival of patients with a stent inserted as a bridge to curative surgery for obstructive colorectal cancer. Surg Today 2023; 53:409-419. [PMID: 35987967 DOI: 10.1007/s00595-022-02575-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 07/19/2022] [Indexed: 10/15/2022]
Abstract
PURPOSE Inflammation is one of the hallmarks of cancer, and inflammation-based markers that are calculated easily from laboratory results have shown predictive abilities. We investigated the prognostic values of the preoperative platelet-to-lymphocyte ratio (PLR), systemic immune-inflammation index (SII), and pan-immune-inflammation value (PIV) in patients with non-metastatic obstructive colorectal cancer (OCRC) and a self-expandable metallic stent inserted as a bridge to curative surgery. METHODS The subjects of this retrospective study were 86 patients with pathological stage I to III OCRC. We examined the associations of these biomarkers with short- and long-term outcomes. RESULTS Multivariate analyses revealed that a preoperative PLR < 149, SII < 597, and PIV < 209 were independently associated with poorer relapse-free survival (RFS) (P = 0.007, P < 0.001, and P = 0.002, respectively) and that a PIV < 209 was independently associated with poorer cancer-specific survival (P = 0.030). A platelet count < 240 was significantly associated with worse RFS, whereas the lymphocyte count was not. Pre-stenting PLR < 221 was an independent poor prognostic factor for RFS (P = 0.045). CONCLUSION This study showed that decreased preoperative PLR, SII, PIV, and pre-stenting PLR were associated with poorer RFS, contrary to the findings of most previous studies. Our results suggest that platelets and obstruction contributed primarily to the opposite relationships, which might provide new insight into the possible pathophysiology of platelet-tumor interactions generated in the OCRC environment.
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Affiliation(s)
- Ryuichiro Sato
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan.
- Department of Surgery, Japanese Red Cross Sendai Hospital, 2-43-3 Yagiyama hon-cho, Taihaku-ku, Sendai, 982-8501, Japan.
| | - Masaya Oikawa
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Tetsuya Kakita
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Takaho Okada
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Tomoya Abe
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Haruyuki Tsuchiya
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Naoya Akazawa
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Tetsuya Ohira
- Department of Gastroenterology, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Yoshihiro Harada
- Department of Gastroenterology, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Haruka Okano
- Department of Gastroenterology, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Kei Ito
- Department of Gastroenterology, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Takashi Tsuchiya
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
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16
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Kondo K, Sadahiro S, Sakamoto K, Tsuchiya T, Takahashi T, Ohge H, Sato T, Ogata Y, Baba H, Itabashi M, Ikeda M, Hamada M, Maeda K, Masuko H, Takahashi K, Sakamoto J, Kusano M, Hyodo I, Taguri M, Morita S. Final analysis of a prospective controlled trial of the efficacy of uracil and tegafur/leucovorin for stage II colon cancer with risk factors for recurrence using propensity score-based methods (JFMC46-1201). J Clin Oncol 2023. [DOI: 10.1200/jco.2023.41.4_suppl.117] [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: 01/25/2023] Open
Abstract
117 Background: The usefulness of adjuvant chemotherapy for stage II colon cancer with high-risk factors for recurrence has not been established. Methods: This was a prospective, non-randomized controlled study based on patients’ selection of treatment options, including randomized therapeutic decision-making. High-risk factors were defined as having at least one of the following factors: T4, perforation/penetration, poorly differentiated adenocarcinoma/mucinous carcinoma, and < 12 dissected lymph nodes. UFT (300 mg/m2/day) plus LV (75 mg/day) were orally administered for 6 months after surgery. The primary endpoint was disease-free survival (DFS) after adjusting for risk factors using propensity sore matching (1:2) and inverse probability of treatment weighting (IPTW) in the non-randomized arm. The secondary endpoints were overall survival (OS) and safety. Results: 1902 (98%) and 36 (2%) patients were enrolled in the non-randomized and randomized arms, respectively between May 2012 and April 2016. There were too few patients in the randomized arm and these were therefore excluded from the analysis. Eligible patients were divided into two groups: A, patients who selected surgery alone (n = 641); B, patients who selected UFT/LV treatment (n = 1239). Of the eligible patients, 402 in group A and 804 in group B were propensity score-matched. The 5-year DFS rate (95% confidence interval) was significantly higher in group B (76.3% [73.1-79.1]) than in group A (68.8% [63.9-73.2]) {hazard ratio [HR] 0.66 [0.51–0.84, P = 0.0008]}. The 5-year OS rates were not significantly different between group B and group A [HR 0.74 (95% CI 0.50–1.10, P = 0.1391)]. Using IPTW, significantly higher 5-year DFS [HR 0.71 (95% CI 0.59–0.86, P = 0.0006)] and overall survival [HR 0.66 (95% CI 0.49–0.90, P = 0.0122)] rates were observed in group B compared with group A. Multivariate analysis revealed that male sex, over 70 years old, T4, < 12 dissected lymph nodes, and no adjuvant chemotherapy were significant risk factors for recurrence. Conclusions: Adjuvant chemotherapy with UFT/LV significantly improves DFS. Oral UFT/LV as adjuvant chemotherapy shows efficacy with an acceptable safety profile for stage II colon cancer with risk factors. Clinical trial information: UMIN000007783 .
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Affiliation(s)
- Ken Kondo
- Nagoya Medical Center, Nagoya, Japan
| | | | - Kazuhiro Sakamoto
- Juntendo University Shizuoka Hospital, Izunokuni-Shi, Shizuoka, Japan
| | | | | | - Hiroki Ohge
- Hiroshima University Hospital, Hiroshima, Japan
| | - Toshihiko Sato
- Department of Surgery, Yamagata Prefectural Central Hospital, Yamagata, Japan
| | - Yukata Ogata
- Kurume University Hospital Cancer Center, Kurume, Japan
| | - Hideo Baba
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | | | | | | | - Kiyoshi Maeda
- Osaka Metropolitan University Graduate School of Medicine, Osaka, Japan
| | | | - Keiichi Takahashi
- Tokyo Metropolitan Health and Hospitals Corporation Ohkubo Hospital, Shinjuku-Ku, Japan
| | | | | | | | - Masataka Taguri
- Department of Data Science, Tokyo Medical University, Tokyo, Japan
| | - Satoshi Morita
- Department of Biomedical Statistics and Bioinformatics, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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Sato R, Oikawa M, Kakita T, Okada T, Abe T, Tsuchiya H, Akazawa N, Ohira T, Harada Y, Okano H, Ito K, Tsuchiya T. Low Geriatric Nutritional Risk Index (GNRI) Predicts Poorer Survival in Patients with Obstructive Colorectal Cancer Who Had a Self-Expandable Metallic Stent (SEMS) Inserted as a Bridge to Curative Surgery. J Anus Rectum Colon 2023; 7:63-73. [PMID: 37113588 PMCID: PMC10129360 DOI: 10.23922/jarc.2022-053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 11/17/2022] [Indexed: 04/29/2023] Open
Abstract
Objectives The geriatric nutritional risk index (GNRI) is a nutrition-related risk index calculated easily from serum albumin and the ratio of body weight to ideal body weight. We investigated the prognostic values of the GNRI in elderly patients with obstructive colorectal cancer (OCRC) who had a self-expandable metallic stent inserted as a bridge to curative surgery. Methods We retrospectively evaluated 61 patients aged ≥65 years with pathological stage I to III OCRC. Associations of preoperative GNRI and pre-stenting GNRI (ps-GNRI) with short- and long-term outcomes were examined. Results Multivariate analyses revealed GNRI of <85.3 and ps-GNRI of <92.9 were independently associated with worse cancer-specific survival (CSS; P = 0.016, and P = 0.041, respectively), and overall survival (OS; P = 0.020, and P = 0.024, respectively). A ps-GNRI of <92.9 was correlated with poorer relapse-free survival (RFS) only in the univariate analysis (P = 0.034). For the OCRC cohort without age restriction (n = 86), GNRI of <85.3 and ps-GNRI of <92.9 were independently associated with worse CSS (P = 0.021), and OS (P = 0.023), respectively. In univariate analysis, ps-GNRI of <92.9 was significantly correlated with poorer RFS (P = 0.006). Moreover, ps-GNRI of <92.9 was significantly associated with Clavien-Dindo grade of ≥III postoperative complications (P = 0.037), anastomotic leak (P = 0.032), infectious complications (P = 0.002), and longer postoperative hospital stay (17 days vs. 15 days; P = 0.048). Conclusions In OCRC patients, decreased preoperative and pre-stenting GNRI were significantly correlated with poorer survival, and decreased pre-stenting GNRI was significantly associated with worse short- and long-term outcomes.
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Affiliation(s)
- Ryuichiro Sato
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
- Department of Surgery, Japanese Red Cross Sendai Hospital, Sendai, Japan
| | - Masaya Oikawa
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Tetsuya Kakita
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Takaho Okada
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Tomoya Abe
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Haruyuki Tsuchiya
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Naoya Akazawa
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Tetsuya Ohira
- Department of Gastroenterology, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Yoshihiro Harada
- Department of Gastroenterology, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Haruka Okano
- Department of Gastroenterology, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Kei Ito
- Department of Gastroenterology, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Takashi Tsuchiya
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
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Nishioka D, Tsuchiya T, Namiki W, Takayanagi M, Imura M, Koide Y, Higuchi T, Terabe K. Edge-of-chaos learning achieved by ion-electron-coupled dynamics in an ion-gating reservoir. Sci Adv 2022; 8:eade1156. [PMID: 36516242 PMCID: PMC9750142 DOI: 10.1126/sciadv.ade1156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 11/14/2022] [Indexed: 06/17/2023]
Abstract
Physical reservoir computing has recently been attracting attention for its ability to substantially reduce the computational resources required to process time series data. However, the physical reservoirs that have been reported to date have had insufficient computational capacity, and most of them have a large volume, which makes their practical application difficult. Here, we describe the development of a Li+ electrolyte-based ion-gating reservoir (IGR), with ion-electron-coupled dynamics, for use in high-performance physical reservoir computing. A variety of synaptic responses were obtained in response to past experience, which were stored as transient charge density patterns in an electric double layer, at the Li+ electrolyte/diamond interface. Performance for a second-order nonlinear dynamical equation task is one order of magnitude higher than memristor-based reservoirs. The edge-of-chaos state of the IGR enabled the best computational capacity. The IGR described here opens the way for high-performance and integrated neural network devices.
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Affiliation(s)
- Daiki Nishioka
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Department of Applied Physics, Faculty of Science, Tokyo University of Science, 6-3-1 Niijuku, Katsushika, Tokyo 125-8585, Japan
| | - Takashi Tsuchiya
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Wataru Namiki
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Makoto Takayanagi
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Department of Applied Physics, Faculty of Science, Tokyo University of Science, 6-3-1 Niijuku, Katsushika, Tokyo 125-8585, Japan
| | - Masataka Imura
- Research Center for Functional Materials, NIMS, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Yasuo Koide
- Research Network and Facility Services Division, NIMS, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
| | - Tohru Higuchi
- Department of Applied Physics, Faculty of Science, Tokyo University of Science, 6-3-1 Niijuku, Katsushika, Tokyo 125-8585, Japan
| | - Kazuya Terabe
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
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Muacevic A, Adler JR, Ozaki A, Hori A, Tsuchiya T. Eleven-Year Trend of Drug and Chemical Substance Overdose at a Local Emergency Hospital in Japan. Cureus 2022; 14:e32475. [PMID: 36644086 PMCID: PMC9835393 DOI: 10.7759/cureus.32475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/12/2022] [Indexed: 12/15/2022] Open
Abstract
PURPOSE The purpose of this study was to investigate long-term trends of overdose in the emergency department of a regional core hospital in Sendai, Miyagi Prefecture, Japan, and to identify patient characteristics as well as drugs and chemicals associated with overdose. METHODS Patients who visited the emergency department from January 1, 2010, to December 31, 2020, and were diagnosed with a drug or chemical overdose were included in the study. We conducted a descriptive analysis based on the data collected. RESULTS In total, 577 patients (mean 38.4 years old, female 75.0%) were considered, and 16.8% had a history of repeated overdose. The number of patients during the study period showed a downward trend, with slight increases in 2012 and 2020. In addition, the top four drugs suspected of causing overdose were over the counter (OTC) antipyretic analgesics and cold medicines (N=97), followed by flunitrazepam (N=80), etizolam (N=72), and brotizolam (N=70). CONCLUSION There was a decreasing trend in overdose, and OTC medicines, sedatives, and anxiolytics were the primary medications causing overdose. OTC antipyretic analgesics and cold medicines were the most common suspected overdose drugs, with an increasing trend in the later years.
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Kusunose H, Koshita S, Kanno Y, Ogawa T, Sakai T, Yonamine K, Miyamoto K, Kozakai F, Anan H, Endo K, Okano H, Oikawa M, Tsuchiya T, Sawai T, Noda Y, Ito K. Pancreatic duct lavage cytology combined with a cell-block method for patients with possible pancreatic ductal adenocarcinomas, including pancreatic carcinoma <i>in situ</i>. Clin Endosc 2022. [DOI: 10.5946/ce.2022.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Yamabe K, Arakawa Y, Shoji M, Miyamoto K, Tsuchiya T, Minoura K, Akeda Y, Tomono K, Onda M. Enhancement ofAcinetobacterbaumanniibiofilm growth by cephem antibiotics via enrichment of protein and extracellular DNAin thebiofilm matrices. J Appl Microbiol 2022; 133:2002-2013. [PMID: 35818769 PMCID: PMC9539989 DOI: 10.1111/jam.15712] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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: 03/22/2022] [Revised: 06/03/2022] [Accepted: 07/06/2022] [Indexed: 11/30/2022]
Abstract
AIMS To determine the effects of subinhibitory concentrations of eight cephem and carbapenem antibiotics on thebiofilm formation ofAcinetobacterbaumanniicells and examine itseffect on pre-established biofilms. METHODS AND RESULTS Effects of antibiotics on biofilm formation were assayed using microtiter plates with polystyrene peg-lids.Cefmetazole, ceftriaxone, ceftazidime, and cefpirome increased the biomass of pre-established biofilms on pegs in the range of their sub-minimum inhibitory concentrations, whereas none increased biofilm formation by planktonic cells. Carbapenems had a negative effect.The constituents of antibiotic-induced biofilms were analyzed. Ceftriaxoneor ceftazidimetreatment markedly increased the matrix constituent amounts in the biofilms (carbohydrate, 2.7-fold; protein, 8.9-12.7-fold; lipid, 3.3-3.6-fold; DNA, 9.1-12.2-fold; outer membrane vesicles, 2.7-3.8-fold; and viable cells,6.8-10.1-fold).The antibiotic-enhanced biofilmshad increased outer membrane protein A and were resistant to the anti-biofilm effect of azithromycin. CONCLUSIONS Some cephems increased the biomass of pre-established biofilms in the ranges of their sub-minimum inhibitory concentrations.The antibiotic-enhanced biofilmspossessed more virulent characteristics than normal biofilms. SIGNIFICANCE AND IMPACT OF THE STUDY Incomplete administration of certain cephems followingbiofilm-related Ac.baumannii infectionscould adversely cause exacerbated and chronic clinical results.
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Affiliation(s)
- K Yamabe
- Department of Social and Administrative Pharmacy, Osaka Medical and Pharmaceutical University, Osaka, Japan
| | - Y Arakawa
- Department of Social and Administrative Pharmacy, Osaka Medical and Pharmaceutical University, Osaka, Japan
| | - M Shoji
- Department of Social and Administrative Pharmacy, Osaka Medical and Pharmaceutical University, Osaka, Japan
| | - K Miyamoto
- Department of Microbiology and Infection Control, Osaka Medical and Pharmaceutical University, Osaka, Japan
| | - T Tsuchiya
- Department of Microbiology and Infection Control, Osaka Medical and Pharmaceutical University, Osaka, Japan
| | - K Minoura
- Joint Research Center, Osaka Medical and Pharmaceutical University, Osaka, Japan
| | - Y Akeda
- National Institute of Infectious Diseases, Tokyo, Japan
| | - K Tomono
- Osaka Institute of Public Health, Osaka, Japan
| | - M Onda
- Department of Social and Administrative Pharmacy, Osaka Medical and Pharmaceutical University, Osaka, Japan
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22
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Sato R, Oikawa M, Kakita T, Okada T, Abe T, Yazawa T, Tsuchiya H, Akazawa N, Yoshimachi S, Ohira T, Harada Y, Okano H, Ito K, Tsuchiya T. Correction to: Prognostic significance of the mean corpuscular volume (MCV) and red cell distribution width (RDW) in obstructive colorectal cancer patients with a stent inserted as a bridge to curative surgery. Surg Today 2022; 52:1711-1713. [PMID: 35654992 DOI: 10.1007/s00595-022-02527-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ryuichiro Sato
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan. .,Department of Surgery, Japanese Red Cross Sendai Hospital, 2-43-3 Yagiyama hon-cho, Taihaku-ku, Sendai, 982-8501, Japan.
| | - Masaya Oikawa
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Tetsuya Kakita
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Takaho Okada
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Tomoya Abe
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Takashi Yazawa
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Haruyuki Tsuchiya
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Naoya Akazawa
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Shingo Yoshimachi
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Tetsuya Ohira
- Department of Gastroenterology, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Yoshihiro Harada
- Department of Gastroenterology, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Haruka Okano
- Department of Gastroenterology, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Kei Ito
- Department of Gastroenterology, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Takashi Tsuchiya
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
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Sato R, Oikawa M, Kakita T, Okada T, Abe T, Yazawa T, Tsuchiya H, Akazawa N, Yoshimachi S, Ohira T, Harada Y, Okano H, Ito K, Tsuchiya T. Prognostic significance of the mean corpuscular volume (MCV) and red cell distribution width (RDW) in obstructive colorectal cancer patients with a stent inserted as a bridge to curative surgery. Surg Today 2022; 52:1699-1710. [PMID: 35441270 DOI: 10.1007/s00595-022-02504-9] [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: 01/17/2022] [Accepted: 03/10/2022] [Indexed: 10/18/2022]
Abstract
PURPOSE The prognostic significance of the mean corpuscular volume (MCV) and red cell distribution width (RDW) in patients with malignancy have not been intensely investigated and are largely overlooked. We, therefore, investigated the clinical significance of MCV and RDW in non-metastatic obstructive colorectal cancer (OCRC) patients with a self-expandable metallic stent inserted as a bridge to curative surgery. METHODS Eighty-five pathological stage II and III OCRC patients were retrospectively evaluated. The associations of the preoperative MCV and RDW values with short- and long-term outcomes were examined. RESULTS There were 50 males and 35 females, and the median age was 71 years old. The median interval between stenting and surgery was 17 days, and the median postoperative hospital stay was 16 days. Fifty-six patients were in the MCV ≥ 87 group, and 47 were in the RDW ≥ 13.8 group. Multivariate analyses revealed the MCV ≥ 87 status to be independently associated with a poor relapse-free survival (hazard ratio [HR] = 4.70, 95% confidence interval [CI] 1.52-14.58, P = 0.007). The RDW ≥ 13.8% was an independent predictor of postoperative infectious complications (HR = 7.28, 95% CI 1.24-42.70, P = 0.028). CONCLUSION The MCV and RDW are simple but strong predictors of postoperative outcomes in OCRC patients.
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Affiliation(s)
- Ryuichiro Sato
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan. .,Department of Surgery, Japanese Red Cross Sendai Hospital, 2-43-3 Yagiyama hon-cho, Taihaku-ku, Sendai, 982-8501, Japan.
| | - Masaya Oikawa
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Tetsuya Kakita
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Takaho Okada
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Tomoya Abe
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Takashi Yazawa
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Haruyuki Tsuchiya
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Naoya Akazawa
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Shingo Yoshimachi
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Tetsuya Ohira
- Department of Gastroenterology, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Yoshihiro Harada
- Department of Gastroenterology, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Haruka Okano
- Department of Gastroenterology, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Kei Ito
- Department of Gastroenterology, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Takashi Tsuchiya
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
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Shimizu T, Koshita S, Ohira T, Harada Y, Kanno Y, Ogawa T, Yamagata T, Kusunose H, Sakai T, Tsuchiya T, Oikawa M, Noda Y, Sawai T, Ito K. Endoscopic Ultrasonography-guided Fine-needle Aspiration Cytology Combined with a Cell-block Method for Gastrointestinal Subepithelial Lesions. Intern Med 2022; 61:935-942. [PMID: 34511568 PMCID: PMC9038475 DOI: 10.2169/internalmedicine.7889-21] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Objective The diagnostic accuracy of an endoscopic ultrasound-guided fine-needle aspiration cytology/biopsy combined with a cell-block method (FNA-CB) for gastrointestinal subepithelial lesions (GI-SELs) has not been fully studied. Methods A total of 109 patients (with 110 GI-SELs) were evaluated to clarify the rate of obtaining evaluable histology specimens using FNA-CB. In addition, we investigated the following: 1) the accuracy for determining the histology, 2) effects of the number of cell clusters obtained via FNA-CB, 3) correlation of the Ki67 labelling index (Ki67LI) of the gastrointestinal stromal tumor (GIST) lesions between FNA-CB and resected specimens, and 4) clinical courses for patients followed up after FNA-CB. Results Of the 110 GI-SELs for which FNA-CB was performed, 95 (86%) were able to be histologically evaluated using the first FNA-CB. For the 70 resected GI-SELs, the accuracy of FNA-CB to determine histology was 96%, remaining at 90% even when only a few cell clusters were obtained. The concordance rate of the risk-grouping of GIST (high-risk, Ki67LI ≥8; low-risk, <8) between FNA-CB and resected specimens was 84%. Of the 29 patients followed up after the first FNA-CB, 12 with benign GI-SELs determined using the first FNA-CB showed no obvious increases in their GI-SEL sizes. Conclusion Since FNA-CB can be used to determine the histology and reproductive activity of GI-SELs accurately, not only preoperative histological confirmation but also reliable information to determine clinical plans, such as follow-up without surgery or neoadjuvant chemotherapy, can be obtained.
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Affiliation(s)
- Takeshi Shimizu
- Department of Gastroenterology, Sendai City Medical Center, Japan
| | - Shinsuke Koshita
- Department of Gastroenterology, Sendai City Medical Center, Japan
| | - Tetsuya Ohira
- Department of Gastroenterology, Sendai City Medical Center, Japan
| | - Yoshihiro Harada
- Department of Gastroenterology, Sendai City Medical Center, Japan
| | - Yoshihide Kanno
- Department of Gastroenterology, Sendai City Medical Center, Japan
| | - Takahisa Ogawa
- Department of Gastroenterology, Sendai City Medical Center, Japan
| | - Taku Yamagata
- Department of Gastroenterology, Sendai City Medical Center, Japan
| | - Hiroaki Kusunose
- Department of Gastroenterology, Sendai City Medical Center, Japan
| | - Toshitaka Sakai
- Department of Gastroenterology, Sendai City Medical Center, Japan
| | | | - Masaya Oikawa
- Department of Surgery, Sendai City Medical Center, Japan
| | - Yutaka Noda
- Department of Gastroenterology, Sendai City Medical Center, Japan
- Department of Pathology, Sendai City Medical Center, Japan
| | - Takashi Sawai
- Department of Pathology, Sendai City Medical Center, Japan
| | - Kei Ito
- Department of Gastroenterology, Sendai City Medical Center, Japan
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25
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Sadahiro S, Sakamoto K, Tsuchiya T, Takahashi T, Ohge H, Sato T, Kondo K, Ogata Y, Baba H, Itabashi M, Ikeda M, Hamada M, Maeda K, Masuko H, Takahashi K, Sakamoto J, Kusano M, Hyodo I, Taguri M, Morita S. Prospective observational study of the efficacy of oral uracil and tegafur plus leucovorin for stage II colon cancer with risk factors for recurrence using propensity score matching (JFMC46-1201). BMC Cancer 2022; 22:170. [PMID: 35168560 PMCID: PMC8845390 DOI: 10.1186/s12885-022-09267-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 01/31/2022] [Indexed: 11/24/2022] Open
Abstract
Background The efficacy of adjuvant chemotherapy for high-risk stage II colon cancer (CC) has not been well established. We compared the effects of surgery with and without oral uracil and tegafur plus leucovorin (UFT/LV) in patients with high-risk stage II CC, adjusting for potential risk factors. Methods We enrolled patients with histologically confirmed stage II colon adenocarcinoma with at least one of the following conditions: T4 disease, perforation/penetration, poorly differentiated adenocarcinoma/mucinous carcinoma, or < 12 dissected lymph nodes. Patients chose to be non-randomized or randomized to undergo surgery alone (NR-Group S or R-Group S) or surgery followed by 6 months of UFT/LV (NR-Group U or R-Group U). The primary endpoint was disease-free survival (DFS) after adjusting for previously reported risk factors using propensity score matching (1:2) and inverse probability of treatment weighting (IPTW) in the non-randomized arm. Results Overall, 1,902 (98%) and 36 (2%) patients were enrolled in the non-randomized and randomized arms, respectively. There were too few patients in the randomized arm and these were therefore excluded from the analysis. Of the 1,902 patients, 402 in NR-Group S and 804 in NR-Group U were propensity score-matched. The 3-year DFS rate (95% confidence interval) was significantly higher in NR-Group U (80.9% [77.9%–83.4%]) than in NR-Group S (74.0% [69.3%–78.0%]) (hazard ratio, 0.64 [0.50–0.83]; P = 0.0006). The 3-year overall survival rate was not significantly different between NR-Group S and NR-Group U. Significantly higher 3-year DFS (P = 0.0013) and overall survival (P = 0.0315) rates were observed in NR-Group U compared with NR-Group S using IPTW. Conclusions Adjuvant chemotherapy with UFT/LV showed a significant survival benefit over surgery alone in patients with high-risk stage II CC characterized by at least one of the following conditions: T4 disease, perforation/penetration, poorly differentiated adenocarcinoma/mucinous carcinoma, or < 12 dissected lymph nodes. Trial registration Japan Registry of Clinical Trials: jRCTs031180155 (date of registration: 25/02/2019) (UMIN Clinical Trials Registry: UMIN000007783, date of registration: 18/04/2012). Supplementary Information The online version contains supplementary material available at 10.1186/s12885-022-09267-z.
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Affiliation(s)
- Sotaro Sadahiro
- Department of Surgery, Tokai University, 143 Shimokasuya, Isehara, Kanagawa, 259-1193, Japan.
| | - Kazuhiro Sakamoto
- Department of Coloproctological Surgery, Juntendo University, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan
| | - Takashi Tsuchiya
- Department of Surgery, Sendai City Medical Center, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, Miyagi, 983-0824, Japan
| | - Takao Takahashi
- Department of Digestive Surgery, Gifu University Hospital, 1-1 Yanagido, Gifu, 501-1194, Japan
| | - Hiroki Ohge
- Department of Infectious Diseases, Hiroshima University Hospital, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Toshihiko Sato
- Department of Surgery, Yamagata Prefectural Central Hospital, 1800 Aoyagi, Yamagata, 990-2292, Japan
| | - Ken Kondo
- Department of Surgery, Nagoya Medical Center, 4-1-1 Sannomaru, Naka-ku, Nagoya, Aichi, 460-0001, Japan
| | - Yutaka Ogata
- Department of Surgery, Kurume University Hospital Cancer Center, 67 Asahi-machi, Kurume, Fukuoka, 830-0011, Japan
| | - Hideo Baba
- Department of Gastroenterological Surgery, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto, 860-8556, Japan
| | - Michio Itabashi
- Department of Surgery, Division of Inflammatory Bowel Disease Surgery, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
| | - Masataka Ikeda
- Department of Gastroenterological Surgery, Hyogo College of Medicine, 1-1 Mukogawa-cho, Nishinomiya, Hyogo, 663-8501, Japan
| | - Madoka Hamada
- Division of Gastrointestinal Surgery, Kansai Medical University Hospital, 2-3-1 Shinmachi Hirakata, Osaka, 573-1191, Japan
| | - Kiyoshi Maeda
- Department of Gastroenterological Surgery, Osaka City General Hospital, 2-13-22 Miyakojimahondori, Miyakojima-ku, Osaka, 534-0021, Japan
| | - Hiroyuki Masuko
- Department of Surgery, Nikko Memorial Hospital, 1-5-13 Shintomi-cho, Muroran, Hokkaido, 051-8501, Japan
| | - Keiichi Takahashi
- Tokyo Metropolitan Health and Hospitals Corporation Ohkubo Hospital, 2-44-1 Kabuki-cho, Shinjuku-ku, Tokyo, 160-8488, Japan
| | - Junichi Sakamoto
- Tokai Central Hospital, 4-6-2 Sohara Higashijima-cho, Kakamigahara, Gifu, 504-8601, Japan
| | - Mitsuo Kusano
- Department of Physical Medicine, Yoichi Hospital, 19-1-1 Kurokawa-cho Yoichi, Hokkaido, 046-0003, Japan
| | - Ichinosuke Hyodo
- Department of Gastrointestinal Medical Oncology, National Hospital Organization Shikoku Cancer Center, 160 Kou, Minamiumemoto, Matsuyama, Ehime, 791-0280, Japan
| | - Masataka Taguri
- Department of Data Science, Yokohama City University, 22-2 Seto, Kanazawa-ku, Yokohama, Kanagawa, 236-0027, Japan
| | - Satoshi Morita
- Department of Biomedical Statistics and Bioinformatics, Kyoto University, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
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26
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Sato R, Oikawa M, Kakita T, Okada T, Abe T, Yazawa T, Tsuchiya H, Akazawa N, Yoshimachi S, Okano H, Ito K, Tsuchiya T. Impact of Sarcopenia on Postoperative Complications in Obstructive Colorectal Cancer Patients Who Received Stenting as a Bridge to Curative Surgery. J Anus Rectum Colon 2022; 6:40-51. [PMID: 35128136 PMCID: PMC8801243 DOI: 10.23922/jarc.2021-057] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 10/29/2021] [Indexed: 01/06/2023] Open
Abstract
Objectives: Understanding the relationship between sarcopenia and malignancy is increasingly important since they inevitably affect the aging population. We investigated the clinical significance of sarcopenia in nonmetastatic obstructive colorectal cancer (OCRC) patients who were inserted self-expandable metallic stent and underwent curative surgery. Methods: Plain cross-sectional CT images obtained before stenting were retrospectively analyzed in 92 patients. Muscle volume loss (myopenia) and decreased muscle quality (myosteatosis) were evaluated as skeletal muscle index (SMI) and intramuscular adipose tissue content (IMAC), respectively. Results: This study included 54 men and 38 women, with a median age of 70.5 years. The median interval between SEMS placement and the surgery was 17 days (range, 5-47). There were 35 postoperative complications. The median postoperative hospital stay was 15.5 days (range, 8-77). Twenty-eight patients (41.3%) were classified as SMI-low, and 31 (34.1%) patients were classified as IMAC-high. In multivariate analysis, IMAC-high [hazard ratio (HR) = 7.68, 95% confidence interval (CI) 2.22-26.5, P = 0.001] and right-sided tumor (HR = 5.79, 95% CI 1.36-24.7, P = 0.018) were independent predictors of postoperative complications. IMAC-high (HR = 23.2, 95% CI 4.11-131, P < 0.001) and elevated modified Glasgow prognostic score (mGPS) (HR = 5.85, 95% CI 1.22-28.1, P = 0.027) were independent predictors of infectious complications. Relapse-free survival and overall survival were not significantly different regardless of the SMI or IMAC status. Conclusions: IMAC was associated with postoperative complications and infectious complications. Myosteatosis might be a stronger predictor of postoperative complications than myopenia.
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Affiliation(s)
- Ryuichiro Sato
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan.,Department of Surgery, Japanese Red Cross Sendai Hospital, Sendai, Japan
| | - Masaya Oikawa
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Tetsuya Kakita
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Takaho Okada
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Tomoya Abe
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Takashi Yazawa
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Haruyuki Tsuchiya
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Naoya Akazawa
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Shingo Yoshimachi
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Haruka Okano
- Department of Gastroenterology, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Kei Ito
- Department of Gastroenterology, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Takashi Tsuchiya
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
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27
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Nur R, Tsuchiya T, Toprasertpong K, Terabe K, Takagi S, Takenaka M. A floating gate negative capacitance MoS 2 phototransistor with high photosensitivity. Nanoscale 2022; 14:2013-2022. [PMID: 35072675 DOI: 10.1039/d1nr06315d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Monolayer MoS2 exhibits interesting optoelectronic properties that have been utilized in applications such as photodetectors and light emitting diodes. For image sensing applications, improving the light sensitivity relies on achieving a low dark current that enables the detection weak light signals. Although previous reports on improving the detectivity have been explored with heterostructures and pn junction devices, some of these approaches lack CMOS compatibility processing and sufficient low dark current suppression. Steep slope transistors that overcome the Boltzmann tyranny can further enhance the performance in photodetectors by providing efficient extraction of photogenerated charges. Here, we report a monolayer MoS2 floating gate negative capacitance phototransistor with the integration of a hafnium-zirconium oxide ferroelectric capacitor. In this study, a SSmin of 30 mV dec-1, very low dark currents of 10-13-10-14 A, and a high detectivity of 7.2 × 1015 cm Hz1/2 W-1 were achieved under weak light illumination due to an enhancement in the photogating effect. In addition, its potential as an optical memory and as an optical synapse with excellent long-term potentiation characteristics in an artificial neural network was also explored. Overall, this device structure offers high photosensitivity to weak light signals for future low-powered optoelectronic applications.
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Affiliation(s)
- Roda Nur
- Department of Electrical Engineering and Information Systems, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
| | - Takashi Tsuchiya
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science (NIMS), 1-1 Namiki Tsukuba, Ibaraki 305-0044, Japan
| | - Kasidit Toprasertpong
- Department of Electrical Engineering and Information Systems, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
| | - Kazuya Terabe
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science (NIMS), 1-1 Namiki Tsukuba, Ibaraki 305-0044, Japan
| | - Shinichi Takagi
- Department of Electrical Engineering and Information Systems, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
| | - Mitsuru Takenaka
- Department of Electrical Engineering and Information Systems, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
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28
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Rabo JR, Takayanagi M, Tsuchiya T, Nakajima H, Terabe K, Cervera RBM. Effects of Oxygen Partial Pressure and Substrate Temperature on the Structure and Morphology of Sc and Y Co-Doped ZrO 2 Solid Electrolyte Thin Films Prepared via Pulsed Laser Deposition. Materials (Basel) 2022; 15:ma15020410. [PMID: 35057125 PMCID: PMC8778154 DOI: 10.3390/ma15020410] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 01/01/2022] [Accepted: 01/04/2022] [Indexed: 01/27/2023]
Abstract
Scandium (Sc) and yttrium (Y) co-doped ZrO2 (ScYSZ) thin films were prepared on a SiO2-Si substrate via pulsed laser deposition (PLD) method. In order to obtain good quality thin films with the desired microstructure, various oxygen partial pressures (PO2) from 0.01 Pa to 10 Pa and substrate temperatures (Ts) from 25 °C to 800 °C were investigated. X-ray diffraction (XRD) patterns results showed that amorphous ScYSZ thin films were formed at room substrate temperature while cubic polycrystalline thin films were obtained at higher substrate temperatures (Ts = 200 °C, 400 °C, 600 °C, 800 °C). Raman spectra revealed a distinct Raman shift at around 600 cm−1 supporting a cubic phase. However, a transition from cubic to tetragonal phase can be observed with increasing oxygen partial pressure. Photoemission spectroscopy (PES) spectra suggested supporting analysis that more oxygen vacancies in the lattice can be observed for samples deposited at lower oxygen partial pressures resulting in a cubic structure with higher dopant cation binding energies as compared to the tetragonal structure observed at higher oxygen partial pressure. On the other hand, dense morphologies can be obtained at lower PO2 (0.01 Pa and 0.1 Pa) while more porous morphologies can be obtained at higher PO2 (1.0 Pa and 10 Pa).
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Affiliation(s)
- Jennet R. Rabo
- Energy Storage and Conversion Materials Laboratory, Department of Mining, Metallurgical and Materials Engineering, University of the Philippines Diliman, Quezon City 1101, Philippines;
| | - Makoto Takayanagi
- International Center for Materials Nanoarchitectonics (WIPI-MANA), National Institute for Materials Science, Tsukuba 305-0044, Ibaraki Prefecture, Japan; (M.T.); (T.T.); (K.T.)
| | - Takashi Tsuchiya
- International Center for Materials Nanoarchitectonics (WIPI-MANA), National Institute for Materials Science, Tsukuba 305-0044, Ibaraki Prefecture, Japan; (M.T.); (T.T.); (K.T.)
| | - Hideki Nakajima
- Synchrotron Light Research Institute, Nakhon Ratchasima 30000, Thailand;
| | - Kazuya Terabe
- International Center for Materials Nanoarchitectonics (WIPI-MANA), National Institute for Materials Science, Tsukuba 305-0044, Ibaraki Prefecture, Japan; (M.T.); (T.T.); (K.T.)
| | - Rinlee Butch M. Cervera
- Energy Storage and Conversion Materials Laboratory, Department of Mining, Metallurgical and Materials Engineering, University of the Philippines Diliman, Quezon City 1101, Philippines;
- Correspondence: ; Tel.: +66-(632)-8981-8500 (ext. 3169)
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29
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Sakai T, Koshita S, Kanno Y, Ogawa T, Kusunose H, Yonamine K, Miyamoto K, Kozakai F, Okano H, Ohira T, Horaguchi J, Oikawa M, Tsuchiya T, Noda Y, Ito K. Early and long-term clinical outcomes of endoscopic interventions for benign pancreatic duct stricture/obstruction-the possibility of additional clinical effects of endoscopic ultrasonography-guided pancreatic drainage. Pancreatology 2022; 22:58-66. [PMID: 34742630 DOI: 10.1016/j.pan.2021.10.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 10/14/2021] [Accepted: 10/24/2021] [Indexed: 12/11/2022]
Abstract
OBJECTIVES For benign pancreatic duct strictures/obstructions (BPDS/O), endoscopic ultrasonography-guided pancreatic drainage (EUS-PD) is performed when endoscopic transpapillary pancreatic drainage (ETPD) fails. We clarified the clinical outcomes for patients with BPDS/O who underwent endoscopic interventions through the era where EUS-PD was available. METHODS Forty-five patients with BPDS/O who underwent ETPD/EUS-PD were included. We retrospectively investigated overall technical and clinical success rates for endoscopic interventions, adverse events, and clinical outcomes after successful endoscopic interventions. RESULTS The technical success rates for ETPD and EUS-PD were 77% (35/45) and 80% (8/10), respectively, and the overall technical success rate using two drainage procedures was 91% (41/45). Among the 41 patients who underwent successful endoscopic procedures, the clinical success rates were 97% for the symptomatic patients (35/36). The rates of procedure-related pancreatitis after ETPD and EUS-PD were 13% and 30%, respectively. After successful endoscopic interventions, the cumulative 3-year rate of developing recurrent symptoms/pancreatitis was calculated to be 27%, and only two patients finally needed surgery. Continuous smoking after endoscopic interventions was shown to be a risk factor for developing recurrent symptoms/pancreatitis. CONCLUSIONS By adding EUS-PD to ETPD, the technical success rate for endoscopic interventions for BPDS/O was more than 90%, and the clinical success rate was nearly 100%. Due to the low rate of surgery after endoscopic interventions, including EUS-PD, for patients with BPDS/O, EUS-PD may contribute to their good clinical courses as a salvage treatment for refractory BPDS/O.
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Affiliation(s)
- Toshitaka Sakai
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan.
| | - Shinsuke Koshita
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Yoshihide Kanno
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Takahisa Ogawa
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Hiroaki Kusunose
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Keisuke Yonamine
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Kazuaki Miyamoto
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Fumisato Kozakai
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Haruka Okano
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Tetsuya Ohira
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | | | - Masaya Oikawa
- Department of Surgery, Sendai City Medical Center, Sendai, Japan
| | - Takashi Tsuchiya
- Department of Surgery, Sendai City Medical Center, Sendai, Japan
| | - Yutaka Noda
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Kei Ito
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
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Tsuchiya T, Kurihara S. Cystine and Theanine as Stress-Reducing Amino Acids-Perioperative Use for Early Recovery after Surgical Stress. Nutrients 2021; 14:nu14010129. [PMID: 35011010 PMCID: PMC8746811 DOI: 10.3390/nu14010129] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 12/22/2021] [Accepted: 12/24/2021] [Indexed: 12/14/2022] Open
Abstract
Perioperative nutritional therapy requires the consideration of metabolic changes, and it is desirable to reduce stress aiming at early metabolic normalization. Glutathione (GSH) is a tripeptide composed of glutamic acid, cysteine, and glycine. It is one of the strongest antioxidants in the body and important for adjusting immune function. Cystine and theanine (γ-glutamylethylamide) provide substrates of GSH, cysteine and glutamic acid, promoting the synthesis of GSH. It has been reported that the ingestion of cystine (700 mg) and theanine (280 mg) exhibits inhibitory effects against excess inflammation after strong exercise loads in athletes, based on which its application for invasive surgery has been tried. In patients undergoing gastrectomy, ingestion of cystine (700 mg) and theanine (280 mg) for 10 days from 5 days before surgery inhibited a postoperative increase in resting energy expenditure, promoted recovery from changes in interleukin-6, C-reactive protein, lymphocyte ratio, and granulocyte ratio and inhibited an increase in body temperature. In a mouse small intestine manipulation model, preoperative 5-day administration of cystine/theanine inhibited a postoperative decrease in GSH in the small intestine and promoted recovery from a decrease in behavior quantity. Based on the above, cystine/theanine reduces surgical stress, being useful for perioperative management as stress-reducing amino acids.
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Affiliation(s)
- Takashi Tsuchiya
- Department of Surgery, Sendai City Medical Center, Sendai 983-0824, Japan;
| | - Shigekazu Kurihara
- Nutrition Care Group, Quick Nourishment Department, Food Products Division, Ajinomoto Co., Inc., Tokyo 104-8315, Japan
- Correspondence: ; Tel.: +81-80-2158-8086
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31
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Sato R, Oikawa M, Kakita T, Okada T, Abe T, Yazawa T, Tsuchiya H, Akazawa N, Yoshimachi S, Okano H, Ito K, Tsuchiya T. Prognostic Significance of Preoperative Globulin-to-albumin Ratio in Obstructive Colorectal Cancer Patients Who Underwent Curative Surgery after Stenting. J Anus Rectum Colon 2021; 5:366-375. [PMID: 34746501 PMCID: PMC8553348 DOI: 10.23922/jarc.2021-016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 05/19/2021] [Indexed: 11/30/2022]
Abstract
Objectives: It has been increasingly recognized that the progression of cancer is dependent not only on the tumor characteristics but also on the nutritious and inflammatory condition of the host. We investigated the relationship between the globulin-to-albumin ratio (GAR) and long-term outcomes in obstructive colorectal cancer (OCRC) patients who were inserted self-expandable metallic stent as a bridge to curative surgery. Methods: A total of 75 pathological stage II and III OCRC patients between 2013 and 2020 were retrospectively evaluated. The associations of the preoperative GAR with clinicopathological factors and patient survival were examined. Results: Receiver operating characteristic curve analysis demonstrated that the optimal cutoff value was 0.88. The GAR ≥ 0.88 status was significantly associated with the absence of lymph node metastasis (P = 0.011), longer postoperative hospital stay (17 days vs 15 days, P = 0.042), and not receiving adjuvant chemotherapy (P = 0.011). Relapse-free survival and cancer-specific survival were significantly shorter in the GAR ≥ 0.88 group (P = 0.007 and P = 0.023, respectively). Multivariate analyses revealed that the GAR ≥ 0.88 was independently associated with relapse-free survival [hazard ratio (HR) = 4.17, 95% confidence interval (CI) 1.32-13.14, P = 0.015)]. Moreover, CA19-9 ≥ 37 (HR = 6.56, 95% CI 2.12-20.27, p = 0.001) and not receiving adjuvant chemotherapy (HR = 4.41, 95% CI 1.28-15.26, p = 0.019) were independent poor prognostic factors for relapse-free survival. Conclusions: The results demonstrated that the GAR was a significant prognostic factor for OCRC patients.
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Affiliation(s)
- Ryuichiro Sato
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan.,Department of Surgery, Japanese Red Cross Sendai Hospital, Sendai, Japan
| | - Masaya Oikawa
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Tetsuya Kakita
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Takaho Okada
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Tomoya Abe
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Takashi Yazawa
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Haruyuki Tsuchiya
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Naoya Akazawa
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Shingo Yoshimachi
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Haruka Okano
- Department of Gastroenterology, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Kei Ito
- Department of Gastroenterology, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
| | - Takashi Tsuchiya
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai, Japan
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Sato R, Oikawa M, Kakita T, Okada T, Abe T, Yazawa T, Tsuchiya H, Akazawa N, Yoshimachi S, Ohira T, Harada Y, Okano H, Ito K, Tsuchiya T. A longer interval after stenting compromises the short- and long-term outcomes after curative surgery for obstructive colorectal cancer. Surg Today 2021; 52:681-689. [PMID: 34648067 DOI: 10.1007/s00595-021-02385-4] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 08/02/2021] [Indexed: 01/10/2023]
Abstract
PURPOSE Intestinal decompression using self-expandable metallic colonic stents (SEMSs) as a bridge to surgery is now considered an attractive alternative to emergency surgery. However, data regarding the optimal timing of surgery after stenting are limited. METHODS We investigated the impact of the interval between stenting and surgery on short- and long-term outcomes in 92 obstructive colorectal cancer (OCRC) patients who had a SEMS inserted and subsequently received curative surgery. RESULTS The median age of the patients was 70.5 years, and the median interval between SEMS insertion and the surgery was 17 (range 5-47) days. There were 35 postoperative complications, including seven major postoperative complications. An interval of more than 16 days was an independent predictor of a poor relapse-free survival (hazard ratio [HR] = 3.12, 95% confidence interval [CI] 1.24-7.81, p = 0.015). An interval of more than 35 days was independently associated with major postoperative complications (HR = 16.6, 95% CI 2.21-125, p = 0.006). CONCLUSION A longer interval between stenting and surgery significantly compromised the short- and long-term outcomes. Surgery within 16 days after stenting might help maximize the benefit of SEMS without interfering with short- and long-term outcomes.
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Affiliation(s)
- Ryuichiro Sato
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan. .,Department of Surgery, Japanese Red Cross Sendai Hospital, 2-43-3 Yagiyama hon-cho, Taihaku-ku, Sendai, 982-8501, Japan.
| | - Masaya Oikawa
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Tetsuya Kakita
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Takaho Okada
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Tomoya Abe
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Takashi Yazawa
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Haruyuki Tsuchiya
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Naoya Akazawa
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Shingo Yoshimachi
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Tetsuya Ohira
- Department of Gastroenterology, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Yoshihiro Harada
- Department of Gastroenterology, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Haruka Okano
- Department of Gastroenterology, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Kei Ito
- Department of Gastroenterology, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Takashi Tsuchiya
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
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Yonamine K, Koshita S, Kanno Y, Ogawa T, Kusunose H, Sakai T, Miyamoto K, Kozakai F, Okano H, Okada T, Oikawa M, Tsuchiya T, Sawai T, Noda Y, Ito K. Pancreatic Ductal Adenocarcinoma Concomitant with Main Duct Type Intraductal Papillary Mucinous Neoplasm of the Pancreas: A Case Report. Am J Case Rep 2021; 22:e932565. [PMID: 34473678 PMCID: PMC8422565 DOI: 10.12659/ajcr.932565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 07/28/2021] [Accepted: 07/12/2021] [Indexed: 11/19/2022]
Abstract
BACKGROUND Intraductal papillary mucinous neoplasm of the pancreas (IPMN) and pancreatic ductal adenocarcinoma (PDAC) often coexist in the same pancreas. Almost all IPMNs involving PDACs concomitant with IPMN have been shown to be branch duct type IPMNs (BD-IPMNs), and their histological subtypes are gastric type. Therefore, PDACs concomitant with main duct type IPMNs (MD-IPMNs) are considered to be rare. We herein report a rare case preoperatively diagnosed as being a PDAC concomitant with MD-IPMN on the basis of imaging findings and histological findings of pancreatic specimens endoscopically obtained from 2 lesions. CASE REPORT A 67-year-old man was referred to our hospital due to an enlarged pancreas. Using imaging studies, a solid mass was found in the pancreatic head and intraductal papillary masses in the dilated main pancreatic duct of the body and tail with a fistula in the duodenum. On the basis of histological results using specimens endoscopically obtained from each of the 2 lesions, total pancreatectomy was planned due to suspected PDAC concomitant with an MD-IPMN. Finally, resected specimens were used to confirm the presence of a rare case of PDAC concomitant with MD-IPMN. CONCLUSIONS We encountered a rare case of a PDAC concomitant with an MD-IPMN which could be preoperatively diagnosed by using imaging studies and histological specimens endoscopically obtained. In addition to invasive cancers derived from IPMNs, PDACs concomitant with IPMNs can rarely develop in the pancreas involving MD-IPMNs.
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Affiliation(s)
- Keisuke Yonamine
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Miyagi, Japan
| | - Shinsuke Koshita
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Miyagi, Japan
| | - Yoshihide Kanno
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Miyagi, Japan
| | - Takahisa Ogawa
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Miyagi, Japan
| | - Hiroaki Kusunose
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Miyagi, Japan
| | - Toshitaka Sakai
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Miyagi, Japan
| | - Kazuaki Miyamoto
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Miyagi, Japan
| | - Fumisato Kozakai
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Miyagi, Japan
| | - Haruka Okano
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Miyagi, Japan
| | - Takaho Okada
- Department of Gastroenterological Surgery, Sendai City Medical Center, Sendai, Miyagi, Japan
| | - Masaya Oikawa
- Department of Gastroenterological Surgery, Sendai City Medical Center, Sendai, Miyagi, Japan
| | - Takashi Tsuchiya
- Department of Gastroenterological Surgery, Sendai City Medical Center, Sendai, Miyagi, Japan
| | - Takashi Sawai
- Department of Pathology, Sendai City Medical Center, Sendai, Miyagi, Japan
| | - Yutaka Noda
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Miyagi, Japan
- Department of Pathology, Sendai City Medical Center, Sendai, Miyagi, Japan
| | - Kei Ito
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Miyagi, Japan
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Tsuchiya T, Takayanagi M, Mitsuishi K, Imura M, Ueda S, Koide Y, Higuchi T, Terabe K. The electric double layer effect and its strong suppression at Li + solid electrolyte/hydrogenated diamond interfaces. Commun Chem 2021; 4:117. [PMID: 36697812 PMCID: PMC9814946 DOI: 10.1038/s42004-021-00554-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 07/22/2021] [Indexed: 01/28/2023] Open
Abstract
The electric double layer (EDL) effect at solid electrolyte/electrode interfaces has been a key topic in many energy and nanoelectronics applications (e.g., all-solid-state Li+ batteries and memristors). However, its characterization remains difficult in comparison with liquid electrolytes. Herein, we use a novel method to show that the EDL effect, and its suppression at solid electrolyte/electronic material interfaces, can be characterized on the basis of the electric conduction characteristics of hydrogenated diamond(H-diamond)-based EDL transistors (EDLTs). Whereas H-diamond-based EDLT with a Li-Si-Zr-O Li+ solid electrolyte showed EDL-induced hole density modulation over a range of up to three orders of magnitude, EDLT with a Li-La-Ti-O (LLTO) Li+ solid electrolyte showed negligible enhancement, which indicates strong suppression of the EDL effect. Such suppression is attributed to charge neutralization in the LLTO, which is due to variation in the valence state of the Ti ions present. The method described is useful for quantitatively evaluating the EDL effect in various solid electrolytes.
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Affiliation(s)
- Takashi Tsuchiya
- grid.21941.3f0000 0001 0789 6880International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki Japan
| | - Makoto Takayanagi
- grid.21941.3f0000 0001 0789 6880International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki Japan ,grid.143643.70000 0001 0660 6861Department of Applied Physics, Faculty of Science, Tokyo University of Science, Katsushika, Tokyo Japan
| | - Kazutaka Mitsuishi
- grid.21941.3f0000 0001 0789 6880Research Center for Advanced Measurement and Characterization, NIMS, Tsukuba, Ibaraki Japan
| | - Masataka Imura
- grid.21941.3f0000 0001 0789 6880Research Center for Functional Materials, NIMS, Tsukuba, Ibaraki Japan
| | - Shigenori Ueda
- grid.21941.3f0000 0001 0789 6880Research Center for Functional Materials, NIMS, Tsukuba, Ibaraki Japan ,grid.472717.0Synchrotron X-ray Station at SPring-8, NIMS, Sayo, Hyogo Japan
| | - Yasuo Koide
- grid.21941.3f0000 0001 0789 6880Research Network and Facility Services Division, NIMS, Tsukuba, Ibaraki Japan
| | - Tohru Higuchi
- grid.143643.70000 0001 0660 6861Department of Applied Physics, Faculty of Science, Tokyo University of Science, Katsushika, Tokyo Japan
| | - Kazuya Terabe
- grid.21941.3f0000 0001 0789 6880International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki Japan
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Tsuchiya T, Fukui Y, Izumi R, Numano K, Zeida M. Effects of oligomeric proanthocyanidins (OPCs) of red wine to improve skin whitening and moisturizing in healthy women - a placebo-controlled randomized double-blind parallel group comparative study. Eur Rev Med Pharmacol Sci 2021; 24:1571-1584. [PMID: 32096209 DOI: 10.26355/eurrev_202002_20215] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE This study was undertaken to evaluate the effects of red wine from grapes oligomeric procyanidins (OPCs) intake on skin color and skin moisture in Japanese healthy women. The purpose of this study was to improve skin condition, with the primary endpoint set to improve sunburn by ultraviolet (UV) and the secondary endpoint set to improve dryness. PATIENTS AND METHODS A randomized, placebo-controlled, double-blind, parallel-group study was conducted on 100 subjects (30 to 59 years of age). They were administered a test beverage, including 200 mg of the red wine OPCs (the test beverage group) or a placebo beverage (the control beverage group) once a day for 12 weeks. The properties of facial skin were measured at 0 (start value), 4th, 8th, and 12th week of the test period. RESULTS After 12 weeks of administration, the pigmentation scores and melanin index values of the OPC group were significantly reduced from the start value and were lower than the control group (p<0.05). In addition, the OPC group showed a significant increase in water content of the stratum corneum compared to the start value, while that of the control group significantly decreased. CONCLUSIONS The red wine OPCs showed the effects of skin whitening and moisturizing, and it is suggested that OPCs may improve the skin condition of healthy women.
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Affiliation(s)
- T Tsuchiya
- Suntory Global Innovation Center Ltd., Kyoto, Japan.
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Yoshida S, Oya S, Obata H, Fujisawa N, Tsuchiya T, Nakamura T. Carotid Endarterectomy Restores Decreased Vision Due to Chronic Ocular Ischemia. J Vasc Surg 2021. [DOI: 10.1016/j.jvs.2020.11.004] [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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Miyazaki S, Tashiro F, Tsuchiya T, Sasaki K, Miyazaki JI. Establishment of a long-term stable β-cell line and its application to analyze the effect of Gcg expression on insulin secretion. Sci Rep 2021; 11:477. [PMID: 33436850 PMCID: PMC7804151 DOI: 10.1038/s41598-020-79992-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [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: 07/22/2020] [Accepted: 12/15/2020] [Indexed: 01/29/2023] Open
Abstract
A pancreatic β-cell line MIN6 was previously established in our lab from an insulinoma developed in an IT6 transgenic mouse expressing the SV40 T antigen in β-cells. This cell line has been widely used for in vitro analysis of β-cell function, but tends to lose the mature β-cell features, including glucose-stimulated insulin secretion (GSIS), in long-term culture. The aim of this study was to develop a stable β-cell line that retains the characteristics of mature β-cells. Considering that mice derived from a cross between C3H and C57BL/6 strains are known to exhibit higher insulin secretory capacity than C57BL/6 mice, an IT6 male mouse of this hybrid background was used to isolate insulinomas, which were independently cultured. After 7 months of continuous culturing, we obtained the MIN6-CB4 β-cell line, which stably maintains its GSIS. It has been noted that β-cell lines express the glucagon (Gcg) gene at certain levels. MIN6-CB4 cells were utilized to assess the effects of differential Gcg expression on β-cell function. Our data show the functional importance of Gcg expression and resulting basal activation of the GLP-1 receptor in β-cells. MIN6-CB4 cells can serve as an invaluable tool for studying the regulatory mechanisms of insulin secretion, such as the GLP-1/cAMP signaling, in β-cells.
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Affiliation(s)
- Satsuki Miyazaki
- grid.136593.b0000 0004 0373 3971Division of Stem Cell Regulation Research, Center for Medical Research and Education, Osaka University Graduate School of Medicine, Suita, Osaka Japan
| | - Fumi Tashiro
- grid.136593.b0000 0004 0373 3971Division of Stem Cell Regulation Research, Center for Medical Research and Education, Osaka University Graduate School of Medicine, Suita, Osaka Japan
| | - Takashi Tsuchiya
- grid.410796.d0000 0004 0378 8307National Cerebral and Cardiovascular Center, Suita, Osaka Japan
| | - Kazuki Sasaki
- grid.410796.d0000 0004 0378 8307National Cerebral and Cardiovascular Center, Suita, Osaka Japan ,grid.419521.a0000 0004 1763 8692Present Address: Sasaki Institute, 2-2, Kandasurugadai, Chiyoda-ku, Tokyo, 101-0062 Japan
| | - Jun-ichi Miyazaki
- grid.136593.b0000 0004 0373 3971The Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka 560-0047 Japan
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38
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Wang Q, Kim SY, Matsushita H, Wang Z, Pandyarajan V, Matsuda M, Ohashi K, Tsuchiya T, Roh YS, Kiani C, Zhao Y, Chan M, Devkota S, Lu SC, Hayashi T, Carson DA, Seki E. Oral administration of PEGylated TLR7 ligand ameliorates alcohol-associated liver disease via the induction of IL-22. Proc Natl Acad Sci U S A 2021; 118:e2020868118. [PMID: 33443222 PMCID: PMC7817133 DOI: 10.1073/pnas.2020868118] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Effective therapies for alcohol-associated liver disease (ALD) are limited; therefore, the discovery of new therapeutic agents is greatly warranted. Toll-like receptor 7 (TLR7) is a pattern recognition receptor for single-stranded RNA, and its activation prevents liver fibrosis. We examined liver and intestinal damage in Tlr7-/- mice to determine the role of TLR7 in ALD pathogenesis. In an alcoholic hepatitis (AH) mouse model, hepatic steatosis, injury, and inflammation were induced by chronic binge ethanol feeding in mice, and Tlr7 deficiency exacerbated these effects. Because these results demonstrated that endogenous TLR7 signaling activation is protective in the AH mouse model, we hypothesized that TLR7 activation may be an effective therapeutic strategy for ALD. Therefore, we investigated the therapeutic effect of TLR7 agonistic agent, 1Z1, in the AH mouse model. Oral administration of 1Z1 was well tolerated and prevented intestinal barrier disruption and bacterial translocation, which thus suppressed ethanol-induced hepatic injury, steatosis, and inflammation. Furthermore, 1Z1 treatment up-regulated the expression of antimicrobial peptides, Reg3b and Reg3g, in the intestinal epithelium, which modulated the microbiome by decreasing and increasing the amount of Bacteroides and Lactobacillus, respectively. Additionally, 1Z1 up-regulated intestinal interleukin (IL)-22 expression. IL-22 deficiency abolished the protective effects of 1Z1 in ethanol-induced liver and intestinal damage, suggesting intestinal IL-22 as a crucial mediator for 1Z1-mediated protection in the AH mouse model. Collectively, our results indicate that TLR7 signaling exerts protective effects in the AH mouse model and that a TLR7 ligand, 1Z1, holds therapeutic potential for the treatment of AH.
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Affiliation(s)
- Qinglan Wang
- Karsh Division of Gastroenterology and Hepatology, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048
- College of Basic Medical Science, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - So Yeon Kim
- Karsh Division of Gastroenterology and Hepatology, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048
| | - Hiroshi Matsushita
- Karsh Division of Gastroenterology and Hepatology, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048
| | - Zhijun Wang
- Karsh Division of Gastroenterology and Hepatology, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048
| | - Vijay Pandyarajan
- Karsh Division of Gastroenterology and Hepatology, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048
| | - Michitaka Matsuda
- Karsh Division of Gastroenterology and Hepatology, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048
| | - Koichiro Ohashi
- Karsh Division of Gastroenterology and Hepatology, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048
| | - Takashi Tsuchiya
- Karsh Division of Gastroenterology and Hepatology, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048
| | - Yoon Seok Roh
- Karsh Division of Gastroenterology and Hepatology, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048
| | - Calvin Kiani
- Department of Internal Medicine, Virginia Commonwealth University School of Medicine, Richmond, VA 23298
| | - Yutong Zhao
- Karsh Division of Gastroenterology and Hepatology, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048
| | - Michael Chan
- Moores Cancer Center, University of California, San Diego, La Jolla, CA 92093
| | - Suzanne Devkota
- Karsh Division of Gastroenterology and Hepatology, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048
| | - Shelly C Lu
- Karsh Division of Gastroenterology and Hepatology, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048
| | - Tomoko Hayashi
- Moores Cancer Center, University of California, San Diego, La Jolla, CA 92093
| | - Dennis A Carson
- Moores Cancer Center, University of California, San Diego, La Jolla, CA 92093
| | - Ekihiro Seki
- Karsh Division of Gastroenterology and Hepatology, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048;
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Sato R, Oikawa M, Kakita T, Okada T, Abe T, Yazawa T, Tsuchiya H, Akazawa N, Sato M, Ohira T, Harada Y, Okano H, Ito K, Tsuchiya T. The Controlling Nutritional Status (CONUT) Score as a prognostic factor for obstructive colorectal cancer patients received stenting as a bridge to curative surgery. Surg Today 2021; 51:144-152. [PMID: 32623583 DOI: 10.1007/s00595-020-02066-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Accepted: 06/23/2020] [Indexed: 12/11/2022]
Abstract
PURPOSE The Controlling Nutritional Status (CONUT) Score, originally developed as a nutritional screening tool, is a cumulative score calculated from the serum albumin level, total cholesterol level, and total lymphocyte count. Previous studies have demonstrated that the score has significant prognostic value in various malignancies. We investigated the relationship between the CONUT score and long-term survival in obstructive colorectal cancer (OCRC) patients who underwent self-expandable metallic colonic stent placement and subsequently received curative surgery. METHODS We retrospectively analyzed 57 pathological stage II and III OCRC patients between 2013 and 2019. The associations between the preoperative CONUT score and clinicopathological factors and patient survival were evaluated. RESULTS A receiver operating characteristic curve analysis revealed that the optimal cut-off value for the CONUT score was 7. A CONUT score of ≥ 7 was significantly associated with elevated CA19-9 level (p = 0.03). Multivariate analyses revealed that a CONUT score of ≥ 7 was independently associated with cancer-specific survival (hazard ratio [HR] = 10.2, 95% confidence interval [CI] 1.2-85.9, p = 0.03) and disease-free survival (HR = 7.1, 95% CI 2.3-21.7, p = 0.0006). CONCLUSION The results demonstrated that the CONUT score was a potent prognostic indicator. Evaluating the CONUT score might result in more precise patient assessment and tailored treatment.
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Affiliation(s)
- Ryuichiro Sato
- Departments of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan.
| | - Masaya Oikawa
- Departments of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Tetsuya Kakita
- Departments of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Takaho Okada
- Departments of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Tomoya Abe
- Departments of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Takashi Yazawa
- Departments of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Haruyuki Tsuchiya
- Departments of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Naoya Akazawa
- Departments of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Masaki Sato
- Departments of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Tetsuya Ohira
- Departments of Gastroenterology, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Yoshihiro Harada
- Departments of Gastroenterology, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Haruka Okano
- Departments of Gastroenterology, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Kei Ito
- Departments of Gastroenterology, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Takashi Tsuchiya
- Departments of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
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40
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Sato M, Akazawa N, Tsuchiya H, Yazawa T, Sato R, Abe T, Okada T, Kakita T, Oikawa M, Tsuchiya T. [Study of Laparoscopic Surgery for Elderly Patients with Colorectal Cancer]. Gan To Kagaku Ryoho 2021; 48:104-106. [PMID: 33468735] [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: 06/12/2023]
Abstract
The number of elderly patients and colorectal cancer patients is increasing, so laparoscopic surgery for colorectal cancer in elderly patients is suspected to increase. In 456 patients who underwent laparoscopic surgery for colorectal cancer, we investigated whether laparoscopic surgery for elderly patients with colon cancer patients could be performed equally compared to non-elderly patients. Preoperative ASA-PS was slightly poorer in elderly patients. There was no significant difference in pStage. The 5-year overall survival rate was lower in the elderly, but there were no significant differences in blood loss, operation time, postoperative hospital stays and incidence of complications of Clavien-Dindo classification grade 3 or higher. It was suggested that laparoscopic surgery for elderly patients with colorectal cancer may be safely performed compared with non-elderly patients.
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Affiliation(s)
- Masaki Sato
- Dept. of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital
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Hashimoto T, Sawano T, Ozaki A, Tsubokura M, Tsuchiya T. Need for more proactive use of pharmacists in the COVID-19 pandemic following lessons learnt from the Great East Japan Earthquake. J Glob Health 2020; 10:020397. [PMID: 33274060 PMCID: PMC7696243 DOI: 10.7189/jogh.10.020397] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Affiliation(s)
| | - Toyoaki Sawano
- Department of Surgery, Sendai City Medical Center, Sendai, Japan.,Department of Radiation Health Management, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Akihiko Ozaki
- Department of Breast Surgery, Jyoban Hospital of Tokiwa Foundation, Iwaki, Fukushima, Japan
| | - Masaharu Tsubokura
- Department of Radiation Health Management, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Takashi Tsuchiya
- Department of Surgery, Sendai City Medical Center, Sendai, Japan
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Oyama A, Tsuchiya T, Akama S, Sugawara M, Kakita T, Oikawa M. [Oral Administration of Amino Acids Cystine and Theanine During Chemotherapy Can Reduce the Symptoms of Stomatitis]. Gan To Kagaku Ryoho 2020; 47:1974-1976. [PMID: 33468771] [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: 06/12/2023]
Abstract
INTRODUCTION Cystine and theanine are amino acids that contribute to the production of glutathione, which is the most potent antioxidant in the body, and it has been reported that these amino acids prevent immunosuppression, has anti- inflammatory effect, and reduce invasiveness. OBJECTIVE To evaluate the effect of oral administration of amino acids cystine and theanine on stomatitis during chemotherapy. SUBJECTS AND METHODS For 17 patients with Grade 1(CTCAE v4.0)or worse stomatitis during chemotherapy for gastrointestinal cancer or breast cancer, cystine 700 mg and theanine 280 mg/ day were orally administered for 28 days, and the degree of stomatitis was evaluated objectively and subjectively. RESULTS As an objective evaluation, changes in Grade showed improvement in 11 cases(64.7%), 5 cases unchanged(29.4%), and 1 case was worse(5.9%). Subjective assessment, pain was in remission(30.8%)or disappeared(61.5%)in 4 of 13 cases. Food intake increased in 5 patients(29.4%). 15 of 17 patients(88.2%)felt it was effective. CONCLUSION Oral administration of amino acids cystine and theanine during chemotherapy can reduce the symptoms of stomatitis.
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Affiliation(s)
- Atsushi Oyama
- Dept. of Digestive Surgery, Sendai City Medical Center Sendai Open Hospital
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Endo R, Sato M, Akazawa N, Yazawa T, Tsuchiya H, Sato R, Abe T, Okada T, Kakita T, Oikawa M, Tsuchiya T. [A Case of Gastric Cancer That Pathological Completely Responded to Neoadjuvant S-1 plus Cisplatin Therapy]. Gan To Kagaku Ryoho 2020; 47:1957-1959. [PMID: 33468765] [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: 06/12/2023]
Abstract
A 67-year-old man with complaints of upper abdominal pain visited a clinic and was diagnosed with type 3 gastric cancer. Contrasted-enhanced CT revealed gastric wall thickening and extensive metastatic lymph nodes particularly around the celiac artery and also invasion to pancreas. He was diagnosed with cT4b, cN2, cM0, cStage ⅢB and we treated with neoadjuvant chemotherapy(NAC)consisting of 4 courses of S-1 and cisplatin regimen. After the NAC, primary cancer and metastatic lymph nodes were reduced remarkably. A curative operation could be performed and the histopathological examination showed"Grade 3, pathological complete response".
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Affiliation(s)
- Ryoma Endo
- Dept. of Gastroenterological Surgery, Sendai Open Hospital
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Fukuda A, Sato M, Okada T, Akazawa N, Tsuchiya H, Yazawa T, Sato R, Abe T, Kakita T, Oikawa M, Tsuchiya T. [A Case of Granulocyte-Colony Stimulating Factor Producing Ascending Colon Cancer]. Gan To Kagaku Ryoho 2020; 47:1795-1797. [PMID: 33468832] [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: 06/12/2023]
Abstract
A 59-year-old man with chief complaints of right-sided rib pain and fever was admitted to our hospital. A type 2 tumor in the ascending colon was revealed by total colonoscopy. Computed tomography examination revealed multiple tumors in the liver. The white blood cell count was high as 13,740/μL. Chemotherapy was planned after treatment with antibiotics, but it was not successful. Right colectomy was performed for infection control. mFOLFOX6 therapy was performed, but liver metastases progressed rapidly, and he died on the 39th postoperative day. The immunohistochemistry revealed G-CSF producing colon cancer. G-CSF producing colon cancer progresses rapidly with poor prognosis. It is necessary to think carefully about indication of surgery and chemotherapy.
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Affiliation(s)
- Aoi Fukuda
- Dept. of Gastroenterological Surgery, Sendai Open Hospital, Sendai Medical Center
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Namiki W, Tsuchiya T, Takayanagi M, Higuchi T, Terabe K. Room-Temperature Manipulation of Magnetization Angle, Achieved with an All-Solid-State Redox Device. ACS Nano 2020; 14:16065-16072. [PMID: 33137249 DOI: 10.1021/acsnano.0c07906] [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] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
An all-solid-state redox device, composed of magnetite (Fe3O4) thin film and Li+ conducting electrolyte thin film, was fabricated for the manipulation of a magnetization angle at room temperature (RT). This is a key technology for the creation of efficient spintronics devices, but has not yet been achieved at RT by other carrier doping methods. Variations in magnetization angle and magnetic stability were precisely tracked through the use of planar Hall measurements at RT. The magnetization angle was reversibly manipulated at 10° by maintaining magnetic stability. Meanwhile, the manipulatable angle reached 56°, although the manipulation became irreversible when the magnetic stability was reduced. This large manipulation of magnetic angle was achieved through tuning of the 3d electron number and modulation of the internal strain in the Fe3O4 due to the insertion of high-density Li+ (approximately 1021 cm-3). This RT manipulation is applicable to highly integrated spintronics devices due to its simple structure and low electric power consumption.
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Affiliation(s)
- Wataru Namiki
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Department of Applied Physics, Faculty of Science, Tokyo University of Science, 6-3-1 Niijuku, Katsushika, Tokyo 125-8585, Japan
| | - Takashi Tsuchiya
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Makoto Takayanagi
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Department of Applied Physics, Faculty of Science, Tokyo University of Science, 6-3-1 Niijuku, Katsushika, Tokyo 125-8585, Japan
| | - Tohru Higuchi
- Department of Applied Physics, Faculty of Science, Tokyo University of Science, 6-3-1 Niijuku, Katsushika, Tokyo 125-8585, Japan
| | - Kazuya Terabe
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
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Koshita S, Noda Y, Kanno Y, Ogawa T, Masu K, Kusunose H, Sakai T, Murabayashi T, Kozakai F, Yonamine K, Miyamoto K, Endo K, Horaguchi J, Oikawa M, Tsuchiya T, Sawai T, Ito K. Value of repeated cytology for intraductal papillary mucinous neoplasms of the pancreas with high risk potential of malignancy: Is it a promising method for monitoring a malignant transformation? Pancreatology 2020; 20:1164-1174. [PMID: 32800646 DOI: 10.1016/j.pan.2020.05.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 05/19/2020] [Accepted: 05/27/2020] [Indexed: 02/08/2023]
Abstract
OBJECTIVES The efficacy of and indications for cytological reexamination to detect malignant changes in branch duct type intraductal papillary mucinous neoplasms (BD-IPMNs) have not been studied in detail. We conducted a retrospective study to evaluate the efficacy and indications of cytological reexamination by using pancreatic juice (repeated cytology) for BD-IPMNs. METHODS Forty-five patients who underwent repeated cytology after a diagnosis of benignancy by using initial cytology were recruited for this study. RESULTS Thirty-eight patients, excluding 7 patients with lack of surveillance period after the final cytology, were classified into Malignancy (n = 13) and Benignancy groups (n = 25) on the bases of the findings from resected specimens or changes in BD-IPMNs after repeated cytology. The sensitivity and specificity to detect malignant changes in BD-IPMNs by using repeated cytology were 62% and 100%, respectively. For the 12 patients with mural nodules (MNs) ≥ 5 mm (67% of them were malignant), the sensitivity was 50%, whereas, for the 26 patients without MNs ≥ 5 mm (19% of them were malignant), it was 80%. In addition, malignant changes in BD-IPMNs after initial cytology occurred in 62% of the patients with changes in the MNs and 27% of the patients with an increase in the cyst size. CONCLUSION Repeated cytology can play a role in the determination for surgery even after a diagnosis of benignancy by using initial cytology, especially for BD-IPMNs without MNs ≥5 mm. In addition, changes in the MNs or cyst size may be appropriate indications for repeated cytology.
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Affiliation(s)
- Shinsuke Koshita
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan.
| | - Yutaka Noda
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan; Department of Pathology, Sendai City Medical Center, Sendai, Japan
| | - Yoshihide Kanno
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Takahisa Ogawa
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Kaori Masu
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Hiroaki Kusunose
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Toshitaka Sakai
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Toji Murabayashi
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Fumisato Kozakai
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Keisuke Yonamine
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Kazuaki Miyamoto
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Kazuki Endo
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Jun Horaguchi
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan; Natori-Chuo-Clinic, Natori, Japan
| | - Masaya Oikawa
- Department of Surgery, Sendai City Medical Center, Sendai, Japan
| | - Takashi Tsuchiya
- Department of Surgery, Sendai City Medical Center, Sendai, Japan
| | - Takashi Sawai
- Department of Pathology, Sendai City Medical Center, Sendai, Japan
| | - Kei Ito
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
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Matsuu-Matsuyama M, Shichijo K, Tsuchiya T, Kondo H, Miura S, Matsuda K, Sekine I, Nakashima M. Protective effects of a cystine and theanine mixture against acute radiation injury in rats. Environ Toxicol Pharmacol 2020; 78:103395. [PMID: 32325407 DOI: 10.1016/j.etap.2020.103395] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2019] [Revised: 04/07/2020] [Accepted: 04/09/2020] [Indexed: 06/11/2023]
Abstract
This study aims to examine the effects of cystine and theanine (CT), which increases glutathione biosynthesis, on the survival rate and acute radiation injury of the small intestine and bone marrow using a rat model. CT pre-treatment (280 mg/kg for 5 days) significantly improved weight loss and survival rate of rats as compared with the control group after 5 Gy. CT pre-treatment significantly increased the rate of mucosa and crypt length, and decreased the number of apoptotic cells, TUNEL and cleaved caspase-3 positive cells, while increasing the number of mitotic cells and Ki-67 positive cells in jejunal crypts and villi compared to control rats post-irradiation. CT also suppressed bone marrow cell loss and reduced the number of apoptotic cells in bone marrow. These results suggest a protective effect of CT pre-treatment for acute injury after irradiation through apoptosis inhibition and increased proliferative activity in jejunal crypt cells and bone marrow cells.
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Affiliation(s)
- Mutsumi Matsuu-Matsuyama
- Tissue and Histopathology Section, Atomic Bomb Disease Institute, Nagasaki University, 1-12-4 Sakamoto, Nagasaki 852-8523, Japan.
| | - Kazuko Shichijo
- Department of Tumor and Diagnostic Pathology, Atomic Bomb Disease Institute, Nagasaki University, 1-12-4 Sakamoto, Nagasaki 852-8523, Japan.
| | - Takashi Tsuchiya
- Sendai City Medical Center, 5-22-1 Tsurugaya, Miyagino, Miyagi 983-0824, Japan.
| | - Hisayoshi Kondo
- Biostatistics Section, Atomic Bomb Disease Institute, Nagasaki University, 1-12-4 Sakamoto, Nagasaki 852-8523, Japan.
| | - Shiro Miura
- Department of Pathology, National Hospital Organization Nagasaki Medical Center, 2-1001-1 Kubara, Omura, Nagasaki 856-8562, Japan.
| | - Katsuya Matsuda
- Department of Tumor and Diagnostic Pathology, Atomic Bomb Disease Institute, Nagasaki University, 1-12-4 Sakamoto, Nagasaki 852-8523, Japan.
| | - Ichiro Sekine
- Department of Tumor and Diagnostic Pathology, Atomic Bomb Disease Institute, Nagasaki University, 1-12-4 Sakamoto, Nagasaki 852-8523, Japan.
| | - Masahiro Nakashima
- Tissue and Histopathology Section, Atomic Bomb Disease Institute, Nagasaki University, 1-12-4 Sakamoto, Nagasaki 852-8523, Japan; Department of Tumor and Diagnostic Pathology, Atomic Bomb Disease Institute, Nagasaki University, 1-12-4 Sakamoto, Nagasaki 852-8523, Japan.
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Kawashiri T, Kobayashi D, Egashira N, Tsuchiya T, Shimazoe T. Oral administration of Cystine and Theanine ameliorates oxaliplatin-induced chronic peripheral neuropathy in rodents. Sci Rep 2020; 10:12665. [PMID: 32728157 PMCID: PMC7391686 DOI: 10.1038/s41598-020-69674-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 07/17/2020] [Indexed: 01/19/2023] Open
Abstract
Oxaliplatin frequently causes severe peripheral neuropathy as a dose-limiting toxicity. However, this toxicity lacks a strategy for prevention. Cystine/Theanine is a supplement, which includes precursors for the biosynthesis of glutathione. In this study, we investigated the effects of Cystine/Theanine on oxaliplatin-induced peripheral neuropathy using an in vivo model. Repeated injection of oxaliplatin (4 mg/kg intraperitoneally twice a week for 2 weeks) caused mechanical allodynia, cold hyperalgesia and axonal degeneration of the sciatic nerve in rats. Mechanical allodynia and axonal degeneration, but not cold hyperalgesia, were ameliorated by daily co-administration of Cystine [200 mg/kg orally (p.o.)] and Theanine (80 mg/kg p.o.). Moreover, co-administration of Cystine and Theanine to rats significantly increased the glutathione level in the sciatic nerve compared with the oxaliplatin group. Furthermore, Cystine and Theanine did not attenuate the tumour cytotoxicity of oxaliplatin in C-26 tumour cell-bearing mice. These findings suggest that Cystine and Theanine may be beneficial for preventing oxaliplatin-induced peripheral neuropathy.
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Affiliation(s)
- Takehiro Kawashiri
- Department of Clinical Pharmacy and Pharmaceutical Care, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, 812-8582, Japan.
| | - Daisuke Kobayashi
- Department of Clinical Pharmacy and Pharmaceutical Care, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, 812-8582, Japan
| | - Nobuaki Egashira
- Department of Pharmacy, Kyushu University Hospital, Fukuoka, 812-8582, Japan
| | - Takashi Tsuchiya
- Department of Surgery, Sendai City Medical Center, Sendai City, Miyagi, 983-0824, Japan
| | - Takao Shimazoe
- Department of Clinical Pharmacy and Pharmaceutical Care, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, 812-8582, Japan
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Ando R, Sato R, Oikawa M, Kakita T, Okada T, Tsuchiya T. Modified keyhole technique for the treatment of parastomal hernia: A case series. Int J Surg Case Rep 2020; 71:107-111. [PMID: 32446987 PMCID: PMC7242996 DOI: 10.1016/j.ijscr.2020.04.082] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 04/26/2020] [Accepted: 04/26/2020] [Indexed: 02/07/2023] Open
Abstract
Parastomal hernia is one of the common complications of permanent stoma. Surgical management is associated with relatively high recurrence rate. Modified Sugarbaker and keyhole techniques are the most cited intraperitoneal mesh repairs. Our modified keyhole technique overcame the weakness of the keyhole technique.
Introduction Parastomal hernia is one of the common complications of permanent stoma, and its incidence was nearly 50%. Surgical management is challenging and associated with relatively high recurrence rate. Mesh repair was demonstrated to reduce recurrence compared to non-mesh repair, and modified Surgerbaker and keyhole technique are the most cited intraperitoneal mesh repairs. In the keyhole technique, recurrence often occurs by herniation through the central hole. We present four parastomal hernia cases successfully repaired by modified keyhole technique, in which a cylinder-shaped synthetic mesh was attached to the keyhole mesh to cover the angle between the keyhole and the bowel. Presentation of cases There were 1 male and 3 females with mean BMI of 25.7 kg/m2. Mean operative time was 114 min. There were two end-colostomies, one loop-ileostomy and one ileal conduit cases. Postoperative complication was observed in two cases, which was cerebral infarction and paralytic ileus. There were neither infectious complications nor seroma formation, and mean postoperative hospital stay was 18 days. With mean follow-up time of 36 months (range 10–66), we experienced no recurrence. Conclusions Having lower recurrence rate, the modified Sugerbaker technique is considered preferable over the keyhole technique, but the bowel going to the stoma needs to be lateralized enough to be covered by relatively large mesh, which is not always accomplished. In such instances, our modified keyhole technique would be a feasible alternative.
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Affiliation(s)
- Ryohei Ando
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan; Department of Surgery, Tohoku University Graduate School of Medicine, 1-1, Seiryo-machi, Aoba-ku, Sendai, 980-8574, Japan
| | - Ryuichiro Sato
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan.
| | - Masaya Oikawa
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Tetsuya Kakita
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Takaho Okada
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Takashi Tsuchiya
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
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Sato R, Oikawa M, Kakita T, Okada T, Abe T, Yazawa T, Tsuchiya H, Akazawa N, Sato M, Ohira T, Harada Y, Okano H, Ito K, Tsuchiya T. The prognostic value of the prognostic nutritional index and inflammation-based markers in obstructive colorectal cancer. Surg Today 2020; 50:1272-1281. [PMID: 32346761 DOI: 10.1007/s00595-020-02007-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 04/03/2020] [Indexed: 02/07/2023]
Abstract
PURPOSE Inflammation-based markers predict long-term outcomes of various malignancies. We investigated the relationship between these markers and the long-term survival in obstructive colorectal cancer (OCRC) patients with self-expandable metallic colonic stents (SEMSs) who subsequently received curative surgery. METHODS We retrospectively analyzed 72 consecutive pathological stage II and III OCRC patients between 2013 and 2019. The prognostic significance of the prognostic nutritional index (PNI), neutrophil-lymphocyte ratio (NLR), lymphocyte-monocyte ratio (LMR), and platelet-lymphocyte ratio (PLR) was evaluated. RESULTS The overall survival (OS), cancer-specific survival, and disease-free survival (DFS) were significantly shorter in the PNI < 35 group than in the PNI ≥ 35 group (p = 0.006, p < 0.001, and p = 0.003, respectively), and multivariate analyses revealed the PNI to be the only inflammation-based marker independently associated with the survival. A PNI < 35 was significantly associated with an elevated CA 19-9 level (p = 0.04) and longer postoperative hospital stay (p = 0.03). Adjuvant chemotherapy was also significantly associated with the OS (p = 0.040) and DFS (p = 0.011) in multivariate analyses. CONCLUSION The results showed that the PNI was a potent prognostic indicator. For OCRC patients, both systemic inflammation and the nutrition status seem to be important for predicting the prognosis, and administering adjuvant chemotherapy was very important.
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Affiliation(s)
- Ryuichiro Sato
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan.
| | - Masaya Oikawa
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Tetsuya Kakita
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Takaho Okada
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Tomoya Abe
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Takashi Yazawa
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Haruyuki Tsuchiya
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Naoya Akazawa
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Masaki Sato
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Tetsuya Ohira
- Department of Gastroenterology, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Yoshihiro Harada
- Department of Gastroenterology, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Haruka Okano
- Department of Gastroenterology, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Kei Ito
- Department of Gastroenterology, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
| | - Takashi Tsuchiya
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, 5-22-1 Tsurugaya, Miyagino-ku, Sendai, 983-0824, Japan
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