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Kawana T, Imoto H, Tanaka N, Tsuchiya T, Yamamura A, Saijo F, Maekawa M, Tamahara T, Shimizu R, Nakagawa K, Ohnuma S, Kamei T, Unno M. The Significance of Bile in the Biliopancreatic Limb on Metabolic Improvement After Duodenal-Jejunal Bypass. Obes Surg 2024; 34:1665-1673. [PMID: 38512643 PMCID: PMC11031486 DOI: 10.1007/s11695-024-07176-7] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 03/13/2024] [Accepted: 03/14/2024] [Indexed: 03/23/2024]
Abstract
INTRODUCTION Duodenal-jejunal bypass (DJB) is an experimental procedure in metabolic surgery that does not have a restrictive component. Changes in bile acid (BA) dynamics and intestinal microbiota are possibly related to metabolic improvement after DJB. Our previous studies involving obese diabetic rats showed the crucial role of the biliopancreatic limb (BPL) in metabolic improvement after DJB caused by BA reabsorption. We established a new DJB procedure to prevent bile from flowing into the BPL and aimed to elucidate the importance of bile in the BPL after DJB. METHODS Otsuka Long-Evans Tokushima Fatty rats with diabetes were divided into three groups: two DJB groups and a sham group (n = 11). Duodenal-jejunal anastomosis was performed proximal to the papilla of Vater in the DJB group (n = 11). However, the DJB-D group (n = 11) underwent a new procedure with duodenal-jejunal anastomosis distal to the papilla of Vater for preventing bile flow into the BPL. RESULTS Glucose metabolism improved and weight gain was suppressed in the DJB group, but not in the DJB-D and sham groups. Serum BA level and conjugated BA concentration were elevated in the DJB group. The gut microbiota was altered only in the DJB group; the abundance of Firmicutes and Bacteroidetes decreased and that of Actinobacteria increased. However, the DJB-D group exhibited no apparent change in the gut microbiota, similar to the sham group. CONCLUSION BAs are essential in the BPL for metabolic improvement after DJB; they can improve the gut microbiota in these processes.
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Affiliation(s)
- Tomomi Kawana
- Department of Surgery, Tohoku University Graduate School of Medicine, 1-1, Seiryo-Machi, Aoba-Ku, Sendai, 980-8574, Japan
| | - Hirofumi Imoto
- Department of Surgery, Tohoku University Graduate School of Medicine, 1-1, Seiryo-Machi, Aoba-Ku, Sendai, 980-8574, Japan.
| | - Naoki Tanaka
- Department of Surgery, Tohoku University Graduate School of Medicine, 1-1, Seiryo-Machi, Aoba-Ku, Sendai, 980-8574, Japan
| | - Takahiro Tsuchiya
- Department of Surgery, Tohoku University Graduate School of Medicine, 1-1, Seiryo-Machi, Aoba-Ku, Sendai, 980-8574, Japan
| | - Akihiro Yamamura
- Department of Surgery, Tohoku University Graduate School of Medicine, 1-1, Seiryo-Machi, Aoba-Ku, Sendai, 980-8574, Japan
| | - Fumito Saijo
- Department of Surgery, Tohoku University Graduate School of Medicine, 1-1, Seiryo-Machi, Aoba-Ku, Sendai, 980-8574, Japan
| | - Masamitsu Maekawa
- Department of Pharmaceutical Sciences, Tohoku University Hospital, Sendai, Japan
| | - Toru Tamahara
- Tohoku University, Tohoku Medical Megabank Organization, Sendai, Japan
| | - Ritsuko Shimizu
- Tohoku University, Tohoku Medical Megabank Organization, Sendai, Japan
| | - Kei Nakagawa
- Department of Surgery, Tohoku University Graduate School of Medicine, 1-1, Seiryo-Machi, Aoba-Ku, Sendai, 980-8574, Japan
| | - Shinobu Ohnuma
- Department of Surgery, Tohoku University Graduate School of Medicine, 1-1, Seiryo-Machi, Aoba-Ku, Sendai, 980-8574, Japan
| | - Takashi Kamei
- Department of Surgery, Tohoku University Graduate School of Medicine, 1-1, Seiryo-Machi, Aoba-Ku, Sendai, 980-8574, Japan
| | - Michiaki Unno
- Department of Surgery, Tohoku University Graduate School of Medicine, 1-1, Seiryo-Machi, Aoba-Ku, Sendai, 980-8574, Japan
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Tsuchiya T, Shinya Y, Shiokawa Y, Tanishima T, Tamura A, Ono H. Bypass-Assisted Microsurgical Clipping for an Endovascular Treatment-Resistant Ruptured Internal Carotid-Posterior Communicating Artery Aneurysm, Recurring Two Decades Postinitial Clipping: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown) 2024:01787389-990000000-01133. [PMID: 38651892 DOI: 10.1227/ons.0000000000001162] [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] [Received: 11/18/2023] [Accepted: 02/28/2024] [Indexed: 04/25/2024] Open
Abstract
Salvage treatment of postclipping recurrent aneurysms remains challenging.1,2 The salvage microsurgical clipping is a possible intervention but sometimes difficult because of tissue adhesions around the aneurysm and previously installed clips; therefore, salvage coil embolization may have certain advantages.1-5 However, when coil embolization is not applicable,6 microsurgical clipping is a stand-alone curative treatment, requiring proficient and reliable microsurgical techniques. This article describes a unique case of a 70-year-old female patient complaining of a severe headache with subarachnoid hemorrhage due to a recurrent ruptured left internal carotid-posterior communicating artery aneurysm after microsurgical clipping 23 years ago. An initial attempt at coil embolization proved unsuccessful because of the aneurysm shape. Consequently, the salvage microsurgical clipping was planned. Given the additional time for trapping the internal carotid artery for the old clip removal, a superficial temporal artery-middle cerebral artery bypass was also planned. The operation entailed a superficial temporal artery-middle cerebral artery bypass, a Sylvian fissure dissection, the old clip removal, and aneurysm clipping. Intraoperatively, the complete aneurysm neck clipping was successfully performed without any complication, and patient postoperative course was uneventful. A wide surgical field should be obtained to be able to manipulate the aneurysm and old clip safely under a microscope. It is also important to temporarily trap the main artery to ensure removal of old clips and to prepare for intraprocedural ischemia using bypass after a precise assessment of hemodynamics before surgery. The patient provided informed consent for the procedure and the publication of the case along with its pertinent imaging, and this report was approved by the institutional review board at our hospital.
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Affiliation(s)
- Takahiro Tsuchiya
- Department of Neurosurgery, Fuji Brain Institute and Hospital, Fujinomiya, Japan
| | - Yuki Shinya
- Department of Neurosurgery, Fuji Brain Institute and Hospital, Fujinomiya, Japan
- Department of Neurosurgery, The University of Tokyo Hospital, Tokyo, Japan
- Department of Neurologic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Yoshiaki Shiokawa
- Department of Neurosurgery, Fuji Brain Institute and Hospital, Fujinomiya, Japan
| | - Takeo Tanishima
- Department of Neurosurgery, Fuji Brain Institute and Hospital, Fujinomiya, Japan
| | - Akira Tamura
- Department of Neurosurgery, Fuji Brain Institute and Hospital, Fujinomiya, Japan
| | - Hideaki Ono
- Department of Neurosurgery, Fuji Brain Institute and Hospital, Fujinomiya, Japan
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Tsuchiya T, Ikemura M, Miyawaki S, Teranishi Y, Ohara K, Ushiku T, Saito N. Clinical and radiological features of intracranial ancient schwannomas: a single-institution, retrospective analysis. Brain Tumor Pathol 2024:10.1007/s10014-024-00482-z. [PMID: 38578531 DOI: 10.1007/s10014-024-00482-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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Accepted: 03/28/2024] [Indexed: 04/06/2024]
Abstract
Ancient schwannoma (AS) is a subtype of schwannoma characterized by slow progression despite degenerative changes in pathology. Although it is considered a benign tumor, most previous reports have focused on extracranial AS; therefore, the clinical characteristics of intracranial AS is not clear. We included 174 patients who underwent surgery for sporadic intracranial schwannoma, and 13 patients (7.5%) were diagnosed with AS. Cysts were significantly more common in patients with AS than conventional schwannomas (92.3% vs. 44.7%, p < 0.001), as was bleeding (38.5% vs. 6.9%, p = 0.003) and calcification (15.4% vs. 1.3%, p = 0.029). The maximum tumor diameter was also larger in patients with AS (35 mm vs. 29 mm, p = 0.017). The median duration from symptom onset to surgery (7.0 vs. 12.5 months, p = 0.740) did not significantly differ between groups, nor did the probability of postoperative recurrence (p = 0.949). Intracranial AS was strongly associated with cyst formation and exhibited a benign clinical course with a lower rate of recurrence and need for salvage treatment. Extracranial AS is reportedly characterized by a slow progression through a long-term clinical course, whereas intracranial AS did not progress slowly in our study and exhibited different clinical features to those reported for extracranial AS.
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Affiliation(s)
- Takahiro Tsuchiya
- Department of Neurosurgery, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Masako Ikemura
- Department of Pathology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan
| | - Satoru Miyawaki
- Department of Neurosurgery, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.
| | - Yu Teranishi
- Department of Neurosurgery, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Kenta Ohara
- Department of Neurosurgery, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Tetsuo Ushiku
- Department of Pathology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan
| | - Nobuhito Saito
- Department of Neurosurgery, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
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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] [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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Sheng F, Wang AY, Miyawaki K, Tsuchiya T, Osada N, Miller R, Fu Z, Okamura T. Real-World Clinical Profile of Patients Prescribed Evolocumab in Japan. Circ J 2024:CJ-23-0814. [PMID: 38432948 DOI: 10.1253/circj.cj-23-0814] [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] [Indexed: 03/05/2024]
Abstract
BACKGROUND Real-world utilization data for evolocumab, the first proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibitor to be introduced in Japan in 2016, to date are limited. This study aimed to clarify the current real-world patient user profiles of evolocumab based on large-scale health claims data.Methods and Results: This retrospective database study examined patients from a health administrative database (MDV database) who initiated evolocumab between April 2016 (baseline) and November 2021. Characteristics and clinical profiles of this patient population are described. In all, 4,022 patients were included in the final analysis. Most evolocumab prescriptions occurred in the outpatient setting (3,170; 78.82%), and 940 patients (23.37%) had a recent diagnosis of familial hypercholesterolemia. Common recent atherosclerotic cardiovascular disease events at baseline included myocardial infarction (1,633; 40.60%), unstable angina (561; 13.95%), and ischemic stroke (408; 10.14%). Comorbidity diseases included hypertension (2,504; 62.26%), heart failure (1,750; 43.51%), diabetes (1,199; 29.81%), and chronic kidney disease (297; 7.38%). Among the lipid-lowering regimens concomitant with evolocumab, ezetimibe+statin was used most frequently (1,281; 31.85%), followed by no concomitant lipid-lowering regimen (1,190; 29.59%), statin (950; 23.62%), and ezetimibe (601; 14.94%). The median evolocumab treatment duration for all patients was 260 days (interquartile range 57-575 days). CONCLUSIONS This study provides real-world insights into evolocumab utilization in Japan for optimizing patient care and adherence to guideline-based therapies to better address hypercholesterolemia in Japan.
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Affiliation(s)
| | - Alex Y Wang
- Center for Observational Research, Amgen Australia
| | | | | | | | | | | | - Tomonori Okamura
- Department of Preventive Medicine and Public Health, Keio University School of Medicine
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Tsuchiya T, Higashibeppu M, Mazaki Y. Synthesis and Properties of Twisted and Helical Azulene Oligomers and Azulene-Based Polycyclic Hydrocarbons. ChemistryOpen 2023; 12:e202100298. [PMID: 37195257 PMCID: PMC10661833 DOI: 10.1002/open.202100298] [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: 12/23/2021] [Revised: 03/27/2023] [Indexed: 05/18/2023] Open
Abstract
The construction of 1,2-position-connected azulene oligomers was achieved. In the crystal packing structure of the terazulene, two molecules of (Ra )- and (Sa )-configurations formed a pair. Variable temperature NMR measurements and theoretical calculations of the quaterazulene suggest that the helical and syn-type structure with terminal azulene overlap is more stable. Two kinds of fused terazulenes (1,2''-closed and 1,8''-closed) were also synthesized by intramolecular Pd-catalyzed C-H/C-Br arylation of the terazulene moieties. X-ray structure analysis of 1,2''-closed terazulene revealed a planar structure, while an analysis of 1,8''-closed terazulene performed on a C60 co-crystal revealed a curved structure forming a 1 : 1 complex covering the co-crystal. Nucleus-independent chemical shift (NICS) calculations carried out for the central seven-membered ring of 1,8''-closed terazulene showed a positive value, suggesting anti-aromatic properties.
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Affiliation(s)
- Takahiro Tsuchiya
- Department of ChemistryKitasato University1-15-1 Kitasato, Minami-ku SagamiharaKanagawa252-0373Japan
| | - Makoto Higashibeppu
- Department of ChemistryKitasato University1-15-1 Kitasato, Minami-ku SagamiharaKanagawa252-0373Japan
| | - Yasuhiro Mazaki
- Department of ChemistryKitasato University1-15-1 Kitasato, Minami-ku SagamiharaKanagawa252-0373Japan
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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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Ito A, Katagiri Y, Oigawa S, Amano K, Ichizawa K, Tokuda Y, Unagami M, Yoneyama M, Tsuchiya T, Sekiguchi M, Furui M, Nakaoka K, Umemura N, Hayashi Y, Tamaki Y, Nagao K, Nakata M. Effect of blastocyst shrinkage on assisted reproductive outcomes: a retrospective cohort study describing a new morphological evaluation of blastocyst pre-vitrification and post-warming. J Ovarian Res 2023; 16:192. [PMID: 37710287 PMCID: PMC10503151 DOI: 10.1186/s13048-023-01276-1] [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: 07/01/2023] [Accepted: 09/05/2023] [Indexed: 09/16/2023] Open
Abstract
BACKGROUND The failure of frozen-thawed blastocysts to re-expand adequately within a few hours after warming has been reported to have a negative impact on assisted reproductive technology (ART) outcomes. However, the extent to which this failure truly affects ART outcomes has not yet been presented in a manner that is easily understandable to medical practitioners and patients. This study aimed to assess the effects of blastocyst shrinkage on ART outcomes and determine a more effective morphological evaluation approach for use in clinical settings. METHODS This retrospective observational cohort study of frozen-thawed blastocyst transfer cycles was conducted from April 2017 to March 2022. Overall, 1,331 cycles were eligible for inclusion, of which 999 were good-quality blastocysts (GQB) and 332 were non-good-quality blastocysts (non-GQB). All frozen-thawed blastocyst transfer cycles performed during the specified study period were included in the study. Exclusion criteria were established to mitigate potential sources of bias as these cycles could impact implantations. We calculated rates and age-adjusted odds ratios of implantation, clinical pregnancy, ongoing pregnancy, and live birth of the re-expansion group, which showed sufficient expansion, and shrinkage group, which showed insufficient expansion. We also calculated the implantation, clinical pregnancy, ongoing pregnancy, and live birth rates of the re-expansion and shrinkage groups for each morphological scoring system parameter. RESULTS A reduced ART outcome was observed with use of blastocysts with shrinkage after vitrification/warming. The age-adjusted odds ratios for implantation, clinical pregnancy, ongoing pregnancy, and live birth were lower in the shrinkage group than in the re-expansion group. CONCLUSIONS This study examined the adverse effect of blastocyst shrinkage after warming and recovery culturing on reproductive outcomes in a clinically useful manner by retrospectively examining a substantial number of frozen-thawed embryo transfer cycles. The study findings can possibly reduce concerns regarding over- or under-estimation of blastocyst implantation by allowing providers and patients to refer to the data.
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Affiliation(s)
- Ayumo Ito
- Department of Obstetrics and Gynecology, Faculty of Medicine, Toho University, 5-21-16, Omorinishi, Ota-Ku, Tokyo, 143-0015, Japan.
- Department of Obstetrics and Gynecology, Toho University Omori Medical Center, 6-11-1, Omorinishi, Ota-Ku, Tokyo, 143-8541, Japan.
- Reproduction Center, Toho University Omori Medical Center, 6-11-1, Omorinishi, Ota-Ku, Tokyo, 143-8541, Japan.
| | - Yukiko Katagiri
- Department of Obstetrics and Gynecology, Faculty of Medicine, Toho University, 5-21-16, Omorinishi, Ota-Ku, Tokyo, 143-0015, Japan
- Department of Obstetrics and Gynecology, Toho University Omori Medical Center, 6-11-1, Omorinishi, Ota-Ku, Tokyo, 143-8541, Japan
- Reproduction Center, Toho University Omori Medical Center, 6-11-1, Omorinishi, Ota-Ku, Tokyo, 143-8541, Japan
| | - Satoko Oigawa
- Reproduction Center, Toho University Omori Medical Center, 6-11-1, Omorinishi, Ota-Ku, Tokyo, 143-8541, Japan
| | - Kenji Amano
- Reproduction Center, Toho University Omori Medical Center, 6-11-1, Omorinishi, Ota-Ku, Tokyo, 143-8541, Japan
| | - Koichiro Ichizawa
- Reproduction Center, Toho University Omori Medical Center, 6-11-1, Omorinishi, Ota-Ku, Tokyo, 143-8541, Japan
| | - Yukiko Tokuda
- Reproduction Center, Toho University Omori Medical Center, 6-11-1, Omorinishi, Ota-Ku, Tokyo, 143-8541, Japan
| | - Mami Unagami
- Reproduction Center, Toho University Omori Medical Center, 6-11-1, Omorinishi, Ota-Ku, Tokyo, 143-8541, Japan
| | - Masato Yoneyama
- Department of Obstetrics and Gynecology, Faculty of Medicine, Toho University, 5-21-16, Omorinishi, Ota-Ku, Tokyo, 143-0015, Japan
- Department of Obstetrics and Gynecology, Toho University Omori Medical Center, 6-11-1, Omorinishi, Ota-Ku, Tokyo, 143-8541, Japan
- Reproduction Center, Toho University Omori Medical Center, 6-11-1, Omorinishi, Ota-Ku, Tokyo, 143-8541, Japan
| | - Takahiro Tsuchiya
- Department of Obstetrics and Gynecology, Faculty of Medicine, Toho University, 5-21-16, Omorinishi, Ota-Ku, Tokyo, 143-0015, Japan
- Department of Obstetrics and Gynecology, Toho University Omori Medical Center, 6-11-1, Omorinishi, Ota-Ku, Tokyo, 143-8541, Japan
- Reproduction Center, Toho University Omori Medical Center, 6-11-1, Omorinishi, Ota-Ku, Tokyo, 143-8541, Japan
| | - Mami Sekiguchi
- Department of Obstetrics and Gynecology, Faculty of Medicine, Toho University, 5-21-16, Omorinishi, Ota-Ku, Tokyo, 143-0015, Japan
- Department of Obstetrics and Gynecology, Toho University Omori Medical Center, 6-11-1, Omorinishi, Ota-Ku, Tokyo, 143-8541, Japan
- Reproduction Center, Toho University Omori Medical Center, 6-11-1, Omorinishi, Ota-Ku, Tokyo, 143-8541, Japan
| | - Mayuko Furui
- Department of Obstetrics and Gynecology, Faculty of Medicine, Toho University, 5-21-16, Omorinishi, Ota-Ku, Tokyo, 143-0015, Japan
- Department of Obstetrics and Gynecology, Toho University Omori Medical Center, 6-11-1, Omorinishi, Ota-Ku, Tokyo, 143-8541, Japan
- Reproduction Center, Toho University Omori Medical Center, 6-11-1, Omorinishi, Ota-Ku, Tokyo, 143-8541, Japan
| | - Kentaro Nakaoka
- Department of Obstetrics and Gynecology, Faculty of Medicine, Toho University, 5-21-16, Omorinishi, Ota-Ku, Tokyo, 143-0015, Japan
- Department of Obstetrics and Gynecology, Toho University Omori Medical Center, 6-11-1, Omorinishi, Ota-Ku, Tokyo, 143-8541, Japan
- Reproduction Center, Toho University Omori Medical Center, 6-11-1, Omorinishi, Ota-Ku, Tokyo, 143-8541, Japan
| | - Nahomi Umemura
- Department of Obstetrics and Gynecology, Faculty of Medicine, Toho University, 5-21-16, Omorinishi, Ota-Ku, Tokyo, 143-0015, Japan
- Department of Obstetrics and Gynecology, Toho University Omori Medical Center, 6-11-1, Omorinishi, Ota-Ku, Tokyo, 143-8541, Japan
- Reproduction Center, Toho University Omori Medical Center, 6-11-1, Omorinishi, Ota-Ku, Tokyo, 143-8541, Japan
| | - Yuko Hayashi
- Department of Obstetrics and Gynecology, Faculty of Medicine, Toho University, 5-21-16, Omorinishi, Ota-Ku, Tokyo, 143-0015, Japan
- Department of Obstetrics and Gynecology, Toho University Omori Medical Center, 6-11-1, Omorinishi, Ota-Ku, Tokyo, 143-8541, Japan
- Reproduction Center, Toho University Omori Medical Center, 6-11-1, Omorinishi, Ota-Ku, Tokyo, 143-8541, Japan
| | - Yuko Tamaki
- Department of Obstetrics and Gynecology, Faculty of Medicine, Toho University, 5-21-16, Omorinishi, Ota-Ku, Tokyo, 143-0015, Japan
- Department of Obstetrics and Gynecology, Toho University Omori Medical Center, 6-11-1, Omorinishi, Ota-Ku, Tokyo, 143-8541, Japan
- Reproduction Center, Toho University Omori Medical Center, 6-11-1, Omorinishi, Ota-Ku, Tokyo, 143-8541, Japan
| | - Koichi Nagao
- Reproduction Center, Toho University Omori Medical Center, 6-11-1, Omorinishi, Ota-Ku, Tokyo, 143-8541, Japan
- Department of Urology, Toho University Omori Medical Center, 6-11-1, Omorinishi, Ota-Ku, Tokyo, 143-8541, Japan
| | - Masahiko Nakata
- Department of Obstetrics and Gynecology, Faculty of Medicine, Toho University, 5-21-16, Omorinishi, Ota-Ku, Tokyo, 143-0015, Japan
- Department of Obstetrics and Gynecology, Toho University Omori Medical Center, 6-11-1, Omorinishi, Ota-Ku, Tokyo, 143-8541, Japan
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9
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Tsuchiya T, Hamano T, Inoue M, Nakamura T, Wakamiya A, Mazaki Y. Intense absorption of azulene realized by molecular orbital inversion. Chem Commun (Camb) 2023; 59:10604-10607. [PMID: 37528776 DOI: 10.1039/d3cc02311g] [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: 08/03/2023]
Abstract
The introduction of diarylamino groups at the 2- and 6-positions of azulene was found to invert the order of the orbital energy levels and allowed the HOMO-LUMO transition, resulting in a substantial increase in absorbance in the visible region. In addition, the stability of their one-electron oxidised species was improved by introducing bromine or methoxy groups at the 1- and 3-positions.
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Affiliation(s)
- Takahiro Tsuchiya
- Department of Chemistry, Kitasato University Kitasato 1-15-1, Sagamihara, Kanagawa 252-0373, Japan.
| | - Tomohiro Hamano
- Department of Chemistry, Kitasato University Kitasato 1-15-1, Sagamihara, Kanagawa 252-0373, Japan.
| | - Masahiro Inoue
- Department of Chemistry, Kitasato University Kitasato 1-15-1, Sagamihara, Kanagawa 252-0373, Japan.
| | - Tomoya Nakamura
- Institute for Chemical Research, Kyoto University Uji, Kyoto 611-0011, Japan
| | - Atsushi Wakamiya
- Institute for Chemical Research, Kyoto University Uji, Kyoto 611-0011, Japan
| | - Yasuhiro Mazaki
- Department of Chemistry, Kitasato University Kitasato 1-15-1, Sagamihara, Kanagawa 252-0373, Japan.
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10
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Tsuchiya T, Matsuo T, Fujimoto S, Nakata Y, Morino M. Quantitative evaluation of hippocampal gray-white matter boundary blurring in medial temporal lobe epilepsy with hippocampal sclerosis. Epilepsy Behav 2023; 140:109098. [PMID: 36736239 DOI: 10.1016/j.yebeh.2023.109098] [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: 05/20/2022] [Revised: 11/18/2022] [Accepted: 01/14/2023] [Indexed: 02/04/2023]
Abstract
INTRODUCTION The magnetic resonance imaging (MRI) findings of hippocampal sclerosis (HS) include decreased volume, increased signal intensity, and hippocampal gray-white matter boundary blurring (HGWBB). Given that the layered structure is obscure in HS, there have been no reports on the quantitative evaluation of HGWBB and its relationship with the clinical outcome. Thus, this study aims to correlate the extent of HGWBB to its clinical manifestation of HS. METHODS Fifty-four patients with temporal lobe epilepsy who underwent hippocampal resection were enrolled. To evaluate HGWBB quantitatively, we defined an index by calculating the standard deviation of the intrahippocampal signal on short tau inversion recovery. In addition, we created a prognostic scoring system using four criteria, including hippocampal signal intensity, size of hippocampal cross-sectional area, presence of temporal lobe lesions, and the HGWBB index. RESULTS The HGWBB index was significantly lower on the affected side than on the unaffected side (p < 0.001). This trend was more prominent in the poor prognosis group than that in the good prognosis group. The prognostic scoring system revealed that when three or more criteria were positive, the prognostic accuracy reached 87.5% sensitivity and 71.7% specificity. CONCLUSION The HGWBB index is useful for the diagnosis of temporal lobe epilepsy with HS and for predicting seizure outcomes when used with another index of hippocampal volume loss and increased signal intensity.
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Affiliation(s)
- Takahiro Tsuchiya
- Department of Neurosurgery, Tokyo Metropolitan Neurological Hospital, Fuchu, Tokyo, Japan
| | - Takeshi Matsuo
- Department of Neurosurgery, Tokyo Metropolitan Neurological Hospital, Fuchu, Tokyo, Japan.
| | - So Fujimoto
- Department of Neurosurgery, Tokyo Metropolitan Neurological Hospital, Fuchu, Tokyo, Japan
| | - Yasuhiro Nakata
- Department of Neuroradiology, Tokyo Metropolitan Neurological Hospital, Fuchu, Tokyo, Japan
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11
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Terao Y, Kumagai Y, Suzuki I, Tsuchiya T, Ukai M, Yokoya A, Fujii K, Fukuda Y, Saitoh Y. X-ray induced luminescence spectroscopy for DNA damaging intermediates aided by a monochromatic synchrotron radiation. Int J Radiat Biol 2023; 99:89-94. [PMID: 34402379 DOI: 10.1080/09553002.2021.1967506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
PURPOSE To identify the bonding sites of initial radiation interaction with DNA and to trace the following chemical reaction sequences on the pathway of damage induction, we carry out a spectroscopy XIL (X-ray induced luminescence) using soft X-ray synchrotron radiation. This is a nondestructive analysis of the excited intermediate species produced in a molecular mechanism on the damage induction pathway. MATERIALS AND METHODS We introduce aqueous samples of UMP (uridine-5'-monophosphate) in the vacuum by the use of a liquid micro-jet technique. The luminescence in the region of UV-VIS (from visible to ultraviolet) radiation induced after the absorption of monochromatic soft X-ray by aqueous UMP is measured with sweeping the soft X-ray energy in the region of 370-560 eV. RESULTS The enhanced XIL intensities for aqueous UMP in the region of soft X-ray of 410-530 eV (in "water window" region) are obtained. The enhancement of XIL intensities in the UV-VIS region, relative to the water control, is explained by the excitation and ionization of a K-shell electron of nitrogen atoms in the uracil moiety. The enhanced XIL intensities do not match the structure of XANES (X-ray absorption near-edge structure) of the aqueous UMP. This suggests that the XIL intensities reflect the quantum yields of luminescence, or the quantum yields for conversion by UMP of an absorbed X-ray into UV-VIS radiation. In this paper, spectra of luminescence are shown to be resolved by combining low pass filters. The filtered luminescence spectra are obtained at the center of gravity (λc) of the band pass wavelength regions at λc = 270nm, 295 nm, 340 nm, 385 nm, 450 nm, and 525 nm., which show a trend similar to the fluorescence of nucleobases induced by ultraviolet radiation. CONCLUSION It is concluded that the origin of the observed XIL is the hydrated uracil moiety in aqueous UMP, decomposition of which is suppressed by the migration of excess charge and internal energy after the double ionization due to Auger decay.
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Affiliation(s)
- Yusaku Terao
- Department of Applied Physics, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Yoshiaki Kumagai
- Department of Applied Physics, Tokyo University of Agriculture and Technology, Tokyo, Japan.,Institute of Engineering, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Issei Suzuki
- Department of Applied Physics, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Takahiro Tsuchiya
- Department of Applied Physics, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Masatoshi Ukai
- Department of Applied Physics, Tokyo University of Agriculture and Technology, Tokyo, Japan.,Institute of Engineering, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Akinari Yokoya
- Institute of Quantum Life Science, National Institute for Quantum and Radiological Science, Ibaraki, Japan
| | - Kentaro Fujii
- Institute of Quantum Life Science, National Institute for Quantum and Radiological Science, Ibaraki, Japan.,Quantum beam Science Research Directorate, National Institute for Quantum and Radiological Science, Hyogo, Japan
| | - Yoshihiro Fukuda
- Synchrotron Radiation Research Center, Japan Atomic Energy Agency, Hyogo, Japan
| | - Yuji Saitoh
- Synchrotron Radiation Research Center, Japan Atomic Energy Agency, Hyogo, Japan
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12
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Soeta T, Yamamura A, Tanaka N, Imoto H, Tsuchiya T, Nagai T, Shigeta S, Watanabe H, Saijo F, Morikawa T, Ohnuma S, Kamei T, Unno M. [Successful R0 Resection of Two Metachronous Krukenberg Tumors from Gastric Cancer-A Case Report]. Gan To Kagaku Ryoho 2022; 49:1832-1834. [PMID: 36733014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A 50s woman with a stomachache was referred to our hospital with diagnosed gastric cancer. Upper endoscopy showed a type 3 tumor in the lower gastric body, and CT demonstrated a pelvic tumor 10 cm in size. Laparoscopic surgery was performed; since the pelvic tumor was found to derive from the left ovary, left oophorectomy and total gastrectomy were performed. Pathological examination revealed that the ovarian tumor was a gastric cancer metastasis. Adjuvant chemotherapy with S-1 monotherapy was introduced. Four months after the operation, metastasis was suspected due to right ovary tumor edema. Due to the possibility of obtaining R0 resection and adverse events of chemotherapy, we chose right oophorectomy. Pathological examination demonstrated signet-ring cell cancer. Fourteen months after the first operation, the patient is alive with no recurrence or metastasis.
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13
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Okamoto K, Yamamura A, Tanaka N, Imoto H, Tsuchiya T, Yamazaki Y, Kawana T, Sasaki H, Soeta T, Saijo F, Morikawa T, Ohnuma S, Kamei T, Unno M. [A Case of Multiple Gastric GIST with Lymph Nodes Metastases in a Young Woman]. Gan To Kagaku Ryoho 2022; 49:1850-1852. [PMID: 36733020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A 21-year-old woman with bloody stool was referred to our hospital with multiple submucosal tumors at the posterior and anterior wall of the gastric angle under upper gastrointestinal endoscopy. Both of the tumors were diagnosed with gastric gastrointestinal stromal tumor(GIST)by EUS-FNA, then laparoscopic distal gastrectomy with D1 lymph node dissection was performed. The size of those tumors were 47 mm and 15 mm respectively, and pathological examination revealed multiple lymph nodes metastases. Neither KIT nor PDGFRA mutation was found. She had received postoperative adjuvant chemotherapy with imatinib mesylate for 3 years. No sign of recurrence has been confirmed thereafter. GISTs in young adults are rare and their oncological features are considered to be different from common type of GIST.
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Affiliation(s)
- Koji Okamoto
- Dept. of Surgery, Graduate School of Medicine, Tohoku University
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14
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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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15
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Tsuchiya T, Miyawaki S, Shinya Y, Teranishi Y, Tomioka A, Yamazawa S, Shin M, Saito N. Intracranial ancient schwannoma originating from vestibular nerve: A case report and review of the literature. Surg Neurol Int 2022; 13:143. [PMID: 35509536 PMCID: PMC9062893 DOI: 10.25259/sni_71_2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Accepted: 03/19/2022] [Indexed: 11/29/2022] Open
Abstract
Background: Ancient schwannoma (AS) is a subtype of schwannoma with degenerative features, which often progresses slowly over a long period of time. Intracranial AS is a rare benign tumor and there are no detailed reports of AS originating from the vestibular nerve. Case Description: Herein, we present the case of a patient with the right vestibular schwannoma with multiple meningiomas and review three previous cases of intracranial AS. Near-total resection was performed for vestibular schwannoma and the pathological findings were AS (World Health Organization Grade I). Five months postoperatively, gamma knife radiosurgery was performed for a recurrent lesion of the right vestibular schwannoma in the internal auditory meatus. Although AS is known to be a benign pathology, there are cases of rapid growth and early recurrence, as the one presented here. The high Ki-67 index (up to 5%) and the presence of cysts may be related to the rapid progression of intracranial AS. Conclusion: Therefore, careful follow-up is necessary even if adequate removal is achieved. In addition to pathological studies, the genetic background of intracranial AS warrants future investigations. Further accumulation of cases is necessary to clarify the clinical features of intracranial AS.
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Affiliation(s)
- Takahiro Tsuchiya
- Department of Neurosurgery, Faculty of Medicine, The University of Tokyo, and
| | - Satoru Miyawaki
- Department of Neurosurgery, Faculty of Medicine, The University of Tokyo, and
| | - Yuki Shinya
- Department of Neurosurgery, Faculty of Medicine, The University of Tokyo, and
| | - Yu Teranishi
- Department of Neurosurgery, Faculty of Medicine, The University of Tokyo, and
| | - Arisa Tomioka
- Department of Neurosurgery, Faculty of Medicine, The University of Tokyo, and
| | - Sho Yamazawa
- Pathology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Masahito Shin
- Department of Neurosurgery, Faculty of Medicine, The University of Tokyo, and
| | - Nobuhito Saito
- Department of Neurosurgery, Faculty of Medicine, The University of Tokyo, and
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16
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Komeda S, Yoneyama H, Uemura M, Tsuchiya T, Hoshiyama M, Sakazaki T, Hiramoto K, Harusawa S. Data on synthesis and structure-activity relationships of tetrazolato-bridged dinuclear platinum(II) complexes. Data Brief 2022; 40:107697. [PMID: 34993284 PMCID: PMC8713121 DOI: 10.1016/j.dib.2021.107697] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 12/07/2021] [Accepted: 12/08/2021] [Indexed: 11/29/2022] Open
Abstract
In this data file, the synthetic procedures for the preparation of a series of anticancer tetrazolato-bridged dinuclear platinum(II) complexes ([{cis-Pt(NH3)2}2(μ-OH)(μ-5-R-tetrazolato-N2,N3)]n+ (n = 1 or 2, tetrazolato-bridged complexes)) and of the bridging ligands of 5-substituted 1H-tetrazoles (5-R-1H-tetrazoles) are described. These compounds were characterized by 1H-, 13C-, 19F- and 195Pt-NMR spectroscopy and mass spectrometry.
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Affiliation(s)
- Seiji Komeda
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka, Mie 513-8670, Japan
| | - Hiroki Yoneyama
- Department of Pharmaceutical Organic Chemistry, Osaka Medical and Pharmaceutical University, Takatsuki, Osaka 569-1094, Japan
| | - Masako Uemura
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka, Mie 513-8670, Japan
| | - Takahiro Tsuchiya
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka, Mie 513-8670, Japan
| | - Miyuu Hoshiyama
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka, Mie 513-8670, Japan
| | - Tomoya Sakazaki
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka, Mie 513-8670, Japan
| | - Keiichi Hiramoto
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka, Mie 513-8670, Japan
| | - Shinya Harusawa
- Department of Pharmaceutical Organic Chemistry, Osaka Medical and Pharmaceutical University, Takatsuki, Osaka 569-1094, Japan
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17
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Tsuchida T, Susa K, Kibiki T, Tsuchiya T, Miyamoto K, In Y, Minoura K, Taniguchi T, Ishida T, Tomoo K. Structural study of the recognition mechanism of tau antibody Tau2r3 with the key sequence (VQIINK) in tau aggregation. Biochem Biophys Res Commun 2021; 585:36-41. [PMID: 34784549 DOI: 10.1016/j.bbrc.2021.11.025] [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: 09/30/2021] [Revised: 11/05/2021] [Accepted: 11/08/2021] [Indexed: 11/18/2022]
Abstract
One of the histopathological features of Alzheimer's disease (AD) is higher order neurofibrillary tangles formed by abnormally aggregated tau protein. The sequence 275VQIINK280 in the microtubule-binding domain of tau plays a key role in tau aggregation. Therefore, an aggregation inhibitor targeting the VQIINK region in tau may be an effective therapeutic agent for AD. We have previously shown that the Fab domain (Fab2r3) of a tau antibody that recognizes the VQIINK sequence can inhibit tau aggregation, and we have determined the tertiary structure of the Fab2r3-VQIINK complex. In this report, we determined the tertiary structure of apo Fab2r3 and analyzed differences in the structures of apo Fab2r3 and Fab2r3-VQIINK to examine the ligand recognition mechanism of Fab2r3. In comparison with the Fab2r3-VQIINK structure, there were large differences in the arrangement of the constant and variable domains in apo Fab2r3. Remarkable structural changes were especially observed in the H3 and L3 loop regions of the complementarity determining regions (CDRs) in apo Fab2r3 and the Fab2r3-VQIINK complex. These structural differences in CDRs suggest that formation of hydrophobic pockets suitable for the antigen is important for antigen recognition by tau antibodies.
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Affiliation(s)
- Tomohiro Tsuchida
- Department of Physical Chemistry, Osaka Medical and Pharmaceutical University, 4-20-1, Nasahara, Takatsuki, Osaka, 569-1094, Japan
| | - Kouki Susa
- Department of Physical Chemistry, Osaka Medical and Pharmaceutical University, 4-20-1, Nasahara, Takatsuki, Osaka, 569-1094, Japan
| | - Tomohiro Kibiki
- Department of Physical Chemistry, Osaka Medical and Pharmaceutical University, 4-20-1, Nasahara, Takatsuki, Osaka, 569-1094, Japan
| | - Takahiro Tsuchiya
- Department of Microbiology and Infection Control, Osaka Medical and Pharmaceutical University, 4-20-1, Nasahara, Takatsuki, Osaka, 569-1094, Japan
| | - Katsushiro Miyamoto
- Department of Microbiology and Infection Control, Osaka Medical and Pharmaceutical University, 4-20-1, Nasahara, Takatsuki, Osaka, 569-1094, Japan
| | - Yasuko In
- Department of Physical Chemistry, Osaka Medical and Pharmaceutical University, 4-20-1, Nasahara, Takatsuki, Osaka, 569-1094, Japan
| | - Katsuhiko Minoura
- Department of Physical Chemistry, Osaka Medical and Pharmaceutical University, 4-20-1, Nasahara, Takatsuki, Osaka, 569-1094, Japan
| | - Taizo Taniguchi
- Pharma Crea Kobe Co. Ltd., Showajutaku・Fukumoto Bldg. 8F, 4-2-18, Hachimandori, Chuo-ku, Kobe, Hyogo, 651-0085, Japan
| | - Toshimasa Ishida
- Department of Physical Chemistry, Osaka Medical and Pharmaceutical University, 4-20-1, Nasahara, Takatsuki, Osaka, 569-1094, Japan
| | - Koji Tomoo
- Department of Physical Chemistry, Osaka Medical and Pharmaceutical University, 4-20-1, Nasahara, Takatsuki, Osaka, 569-1094, Japan.
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Sasaki H, Aoki T, Yamamura A, Tanaka N, Imoto H, Tsuchiya T, Kawana T, Morikawa T, Ohnuma S, Kamei T, Unno M. [A Case of Remnant Gastric Cancer with Mesojejunal Lymph Node Metastasis]. Gan To Kagaku Ryoho 2021; 48:2118-2120. [PMID: 35045511] [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: 06/14/2023]
Abstract
A 62-year-old man underwent radical surgery for the treatment of remnant gastric cancer with mesojejunal lymph node metastasis. According to the 15th edition of the Japanese Gastric Cancer Association, a histological diagnosis of B-35-A, type 3, tub2>tub1, pT3(SS), pN3a(10/37), cM0, CY0, pStage ⅢB was made. All lymph node metastases were recognized in the mesojejunum. Adjuvant chemotherapy with S-1 plus docetaxel was initiated after 4 weeks of surgery. The patient is still alive without recurrence after 1 year of surgery. Thus, radical surgery with dissection of the mesojejunum and intensive adjuvant chemotherapy might improve the prognosis in a remnant gastric cancer patient with mesojejunal lymph node metastasis.
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19
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Kawana T, Imoto H, Tanaka N, Aoki T, Yamamura A, Tsuchiya T, Sugisawa N, Sasaki H, Morikawa T, Fujishima F, Onuma S, Kamei T, Unno M. [Complete Response to Neoadjuvant Chemotherapy with Imatinib of a Large Gastric GIST-A Case Report]. Gan To Kagaku Ryoho 2021; 48:1749-1751. [PMID: 35046318] [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: 06/14/2023]
Abstract
A 54-year-old woman was presented with the intraabdominal mass to our hospital. Abdominal CT showed 22 cm tumor of the stomach with invasion to the pancreas and the spleen. Upper GI endoscopy showed submucosal tumor at the stomach body, and endoscopic US showed low echoic tumor. The tumor was diagnosed as gastric GIST by biopsy with c-kit positive cells. After 4 months of neoadjuvant therapy with imatinib, she underwent total gastrectomy, distal pancreatectomy and splenectomy. Histopathologically, there were no viable tumor cells in the resected specimen. The patient has no evidence of recurrence at 8 months post operation.
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Affiliation(s)
- Tomomi Kawana
- Dept. of Surgery, Tohoku University Graduate School of Medicine
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Takaoka T, Tomita N, Mizuno T, Hashimoto S, Tsuchiya T, Tomida M, Yanagi T. Dosimetric Comparison of Helical Tomotherapy and Intensity-Modulated Proton Therapy in Hippocampus- and Scalp-Sparing Whole Brain Radiotherapy. Technol Cancer Res Treat 2021; 20:15330338211060170. [PMID: 34806489 PMCID: PMC8606719 DOI: 10.1177/15330338211060170] [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] [Indexed: 11/25/2022] Open
Abstract
Objective: Cognitive decline and alopecia after radiotherapy are challenging problems. We aimed to compare whole brain radiotherapy (WBRT) plans reducing radiation dose to the hippocampus and scalp between helical tomotherapy (HT) and intensity-modulated proton therapy (IMPT). Methods: We conducted a planning study of WBRT for 10 patients. The clinical target volume was defined as the whole brain excluding the hippocampus avoidance (HA) region. The prescribed dose was 30 Gy in 10 fractions to cover 95% of the target. Constraint goals were defined for the target and organs at risk (OAR). Results: Both techniques met the dose constraints for the target and OAR. However, the coverage of the target (dose covering 95% [D95%] and 98% [D98%] of the volume) were better in IMPT than HT (HT vs IMPT: D95%, 29.9 Gy vs 30.0 Gy, P < .001; D98%, 26.7 Gy vs 28.1 Gy, P = .002). The homogeneity and conformity of the target were also better in IMPT than HT (HT vs IMPT: homogeneity index, 1.50 vs 1.28, P < .001; conformity index, 1.30 vs 1.14, P < .001). IMPT reduced the D100% of the hippocampus by 59% (HT vs IMPT: 9.3 Gy vs 3.8 Gy, P < .001) and reduced the Dmean of the hippocampus by 37% (HT vs IMPT: 11.1 Gy vs 7.0 Gy, P < .001) compared with HT. The scalp IMPT reduced the percentage of the volume receiving at least 20 Gy (V20Gy) and V10Gy compared with HT (HT vs IMPT: V20Gy, 56.7% vs 6.6%, P < .001; V10Gy, 90.5% vs 37.1%, P < .001). Conclusion: Both techniques provided acceptable target dose coverage. Especially, IMPT achieved excellent hippocampus- and scalp-sparing. HA-WBRT using IMPT is a promising treatment to prevent cognitive decline and alopecia.
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Affiliation(s)
- Taiki Takaoka
- Narita Memorial Proton Center, Toyohashi, Aichi, Japan
| | - Natsuo Tomita
- 38386Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - Tomoki Mizuno
- 38386Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - Shingo Hashimoto
- 38386Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - Takahiro Tsuchiya
- 38386Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
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21
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Kan H, Tsuchiya T, Yamada M, Kunitomo H, Kasai H, Shibamoto Y. Delineation of prostatic calcification using quantitative susceptibility mapping: Spatial accuracy for magnetic resonance-only radiotherapy planning. J Appl Clin Med Phys 2021; 23:e13469. [PMID: 34726833 PMCID: PMC8833270 DOI: 10.1002/acm2.13469] [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: 07/29/2021] [Revised: 10/07/2021] [Accepted: 10/19/2021] [Indexed: 11/16/2022] Open
Abstract
To investigate the spatial accuracy of delineating prostatic calcifications by quantitative susceptibility mapping (QSM) in comparison with computed tomography (CT), we conducted phantom and human studies. Five differently‐sized spherical hydroxyapatites mimicking prostatic calcification (pseudo‐calcification) were arranged in the order of their sizes at the center of a plastic container filled with gelatin. This calcification phantom underwent magnetic resonance (MR) imaging, including the multiple spoiled gradient‐echo sequences (SPGR) for the QSM and CT as a reference. The volume of each pseudo‐calcification and center‐to‐center distance between the pseudo‐calcifications delineated by QSM and CT were measured. In the human study, eight patients with prostate cancer who underwent radiation therapy and had some prostatic calcifications were included. The patients underwent CT and SPGR and modified DIXON sequence for MR‐only simulation. The hybrid QSM processing combined with the complex signals in the SPGR and water and fat fraction maps estimated from the modified DIXON sequence were used to reconstruct the pelvic susceptibility map in humans. The threshold of CT numbers was set at 130 HU, while the QSM images were manually segmented in the calcification phantom and human studies. In the phantom study, there was an excellent agreement in the pseudo‐calcification volumes between QSM and CT (y = 1.02x – 7.38, R2 = 0.99). The signal profiles had similar trends in CT and QSM. The center‐to‐center distances between the pseudo‐calcifications in the phantom were also identical in QSM and CT. The calcification volumes were almost identical between the QSM and CT in the human study (y = 0.95x – 9.32, R2 = 1.00). QSM can offer geometric and volumetric accuracies to delineate prostatic calcifications, similar to CT. The prostatic calcification delineated by QSM may facilitate image‐guided radiotherapy in the MR‐only simulation workflow.
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Affiliation(s)
- Hirohito Kan
- Department of Integrated Health Sciences, Graduate School of Medicine, Nagoya University, Nagoya, Japan.,Department of Radiology, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan
| | - Takahiro Tsuchiya
- Department of Radiology, Nagoya City University Hospital, Nagoya City University, Nagoya, Japan
| | - Masato Yamada
- Department of Radiology, Nagoya City University Hospital, Nagoya City University, Nagoya, Japan
| | - Hiroshi Kunitomo
- Department of Radiology, Nagoya City University Hospital, Nagoya City University, Nagoya, Japan
| | - Harumasa Kasai
- Department of Radiology, Nagoya City University Hospital, Nagoya City University, Nagoya, Japan
| | - Yuta Shibamoto
- Department of Radiology, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan
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22
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Yamabe K, Arakawa Y, Shoji M, Onda M, Miyamoto K, Tsuchiya T, Akeda Y, Terada K, Tomono K. Direct anti-biofilm effects of macrolides on Acinetobacter baumannii: comprehensive and comparative demonstration by a simple assay using microtiter plate combined with peg-lid. Biomed Res 2021; 41:259-268. [PMID: 33268670 DOI: 10.2220/biomedres.41.259] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Recently, opportunistic nosocomial infections caused by Acinetobacter baumannii have become increasingly prevalent worldwide. The pathogen often establishes biofilms that adhere to medical devices, causing chronic infections refractory to antimicrobial therapy. Clinical reports have indicated that some macrolide antibiotics are effective against chronic biofilm-related infections. In this study, we examined the direct anti-biofilm effects of seven macrolides (azithromycin, clarithromycin, erythromycin, josamycin, spiramycin, fidaxomicin, and ivermectin) on A. baumannii using a simple and newly established in vitro assay system for the swift and serial spectrophotometric determinations of two biofilm-amount indexes of viability and biomass. These macrolides were found to possess direct anti-biofilm effects exerting specific anti-biofilm effects not exclusively depending on their bacteriostatic/bactericidal effects. The anti-biofilm effect of azithromycin was found to be the strongest, while those of fidaxomicin and ivermectin were weak and limited. These results provide insights into possible adjunctive chemotherapy with macrolides for A. baumannii infection. Common five macrolides also interfered with the Agrobacterium tumefaciens NTL(pCF218) (pCF372) bioassay system of N-acyl homoserine lactones, providing insights into sample preparation for the bioassay, and putatively suggesting the actions of macrolides as remote signals in bacterial quorum sensing systems.
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Affiliation(s)
- Kaoru Yamabe
- Graduate School of Public Policy, The University of Tokyo
| | - Yukio Arakawa
- Department of Social and Administrative Pharmacy, Osaka University of Pharmaceutical Sciences
| | - Masaki Shoji
- Department of Social and Administrative Pharmacy, Osaka University of Pharmaceutical Sciences
| | - Mitsuko Onda
- Department of Social and Administrative Pharmacy, Osaka University of Pharmaceutical Sciences
| | - Katsushiro Miyamoto
- Department of Microbiology and Infection Control, Osaka University of Pharmaceutical Sciences
| | - Takahiro Tsuchiya
- Department of Microbiology and Infection Control, Osaka University of Pharmaceutical Sciences
| | - Yukihiro Akeda
- Division of Infection Control and Prevention, Graduate School of Medicine, Osaka University
| | | | - Kazunori Tomono
- Division of Infection Control and Prevention, Graduate School of Medicine, Osaka University
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Tsuchiya T, Koizumi S, Tomioka A, Miyawaki S, Saito N. Acute Ischemic Stroke Due to Basilar Artery Occlusion with Coronavirus Disease 2019: A Case Report. NMC Case Rep J 2021; 8:579-585. [PMID: 35079520 PMCID: PMC8769431 DOI: 10.2176/nmccrj.cr.2021-0043] [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: 02/09/2021] [Accepted: 04/14/2021] [Indexed: 11/20/2022] Open
Abstract
Although it is increasingly recognized that coronavirus disease 2019 (COVID-19) can cause multi-organ disease, including acute ischemic stroke, the incidence of coagulation disorder is reported to be lower in Asian countries. We report a case of a 47-year-old Asian man with mild COVID-19 respiratory symptoms who had acute basilar artery occlusion. Despite successful recanalization with mechanical thrombectomy, the patient developed extensive cerebral infarction in the posterior circulation, necessitating decompressive craniotomy. Our findings suggest that severe large vessel occlusion (LVO) can occur even in young Asian patients with mild COVID-19 respiratory symptoms and that its outcome can be extremely severe despite successful recanalization. The management of COVID-19-related LVO can be very challenging, as both the prevention of possible nosocomial infection and early recanalization are required simultaneously.
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Affiliation(s)
| | - Satoshi Koizumi
- Department of Neurosurgery, The University of Tokyo, Tokyo, Japan
| | - Arisa Tomioka
- Department of Neurosurgery, The University of Tokyo, Tokyo, Japan
| | - Satoru Miyawaki
- Department of Neurosurgery, The University of Tokyo, Tokyo, Japan
| | - Nobuhito Saito
- Department of Neurosurgery, The University of Tokyo, Tokyo, Japan
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24
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Tanaka A, Hide M, Tsuchiya T, Ito K. 25723 Difamilast a topical PDE4 inhibitor: Phase 3 trials in Japanese adult and pediatric patients with atopic dermatitis. J Am Acad Dermatol 2021. [DOI: 10.1016/j.jaad.2021.06.292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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25
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Tsuchida T, Tsuchiya T, Miyamoto K, Takai S, Ueno T, Fujioka Y, In Y, Minoura K, Taniguchi T, Tomoo K. Structural study of the inhibitory mechanism of tau recognition antibody to tau aggregation. Acta Crystallogr A Found Adv 2021. [DOI: 10.1107/s0108767321088462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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26
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Mizuno T, Doi S, Tsuchiya T, Kurizaki S. Socially responsible investing through the equity funds in the global ownership network. PLoS One 2021; 16:e0256160. [PMID: 34383856 PMCID: PMC8360556 DOI: 10.1371/journal.pone.0256160] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 07/23/2021] [Indexed: 11/18/2022] Open
Abstract
We analyze the connectivity of equity investments to the firms in the global ownership network that are reported as non-compliant with Environment, Social, and Government (ESG) benchmarks. We find that a large number of shareholders have ownership linkages to non-ESG firms, most commonly with three or four degrees of separation. Analyzing the betweenness centrality for shareholders connecting the ultimate owners and non-ESG firms, we find that the investment management companies play important roles in channeling the investment money into non-ESG firms, where largest American asset managers commonly have one to two degrees of separation on their ownership linkages to those problematic firms. Since asset managers collect capital from investors by running the equity funds, we analyze the ownership stakes and the associated voting rights attributable to the equity funds investors. We estimate the distribution of the power of corporate control over non-ESG firms among specific asset managers (such as BlackRock and Fidelity) and among different types of the equity funds (such as mutual funds and exchanged-traded funds), and explores how investing in the equity funds rather than ownership investing may have shifted the distribution of the power to control those non-ESG firms.
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27
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Ichikawa H, Imoto H, Tanaka N, Fujishima F, Tsuchiya T, Watanabe K, Aoki T, Kohyama A, Morikawa T, Ohnuma S, Naitoh T, Kamei T, Unno M. The role of bilio-pancreatic limb in nonalcoholic steatohepatitis improvement after duodenal-jejunal bypass in rats. Surgery 2021; 170:1006-1013. [PMID: 34389163 DOI: 10.1016/j.surg.2021.07.003] [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] [Received: 03/24/2021] [Revised: 06/14/2021] [Accepted: 07/02/2021] [Indexed: 11/27/2022]
Abstract
BACKGROUND Nonalcoholic fatty liver disease, which is highly associated with obesity, includes nonalcoholic steatohepatitis. Lipopolysaccharides from the intestine would induce inflammation in the liver in nonalcoholic fatty liver disease. This study aimed to examine the role of the bilio-pancreatic limb in the effect of duodenal-jejunal bypass on nonalcoholic steatohepatitis, with respect to the gut-liver axis, using a rat model. METHODS Nonalcoholic steatohepatitis model rats were randomly assigned into 3 groups as follows: 1 sham group and 2 duodenal-jejunal bypass groups. The 2 duodenal-jejunal bypass groups were defined according to the bilio-pancreatic limb length: 30 cm (30-DJB group) and 0 cm (0-DJB group). Pathology findings and blood biochemistry, inflammatory cytokine and lipopolysaccharides receptor mRNA in the liver and common channel, and lipopolysaccharide-binding protein level in the portal vein were assessed. RESULTS The reduction in plasma alanine aminotransferase and nonalcoholic fatty liver disease activity score in the 30-DJB group was not observed in the 0-DJB group, similar to the sham group. In the liver tissue, mRNA of inflammatory cytokines and lipopolysaccharide receptors, the area occupied by CD68-positive macrophages, and the number of CD3-positive T-lymphocytes on immunostaining were lower in the 30-DJB group; however, these findings were not observed in the 0-DJB group, and lipopolysaccharide-binding protein levels in the portal vein and mRNA expressions of inflammation-related genes in the common channel showed similar tendencies. CONCLUSION The bilio-pancreatic limb plays an important role in the beneficial effect of duodenal-jejunal bypass for nonalcoholic steatohepatitis. The bilio-pancreatic limb may suppress lipopolysaccharides-related cascades in the liver by reducing intestinal inflammation.
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Affiliation(s)
- Hidetaka Ichikawa
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Hirofumi Imoto
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Naoki Tanaka
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan.
| | | | - Takahiro Tsuchiya
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Kazuhiro Watanabe
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Takeshi Aoki
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Atsushi Kohyama
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Takanori Morikawa
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Shinobu Ohnuma
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Takeshi Naitoh
- Department of Lower Gastrointestinal Surgery, Kitasato University School of Medicine, Japan
| | - Takashi Kamei
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Michiaki Unno
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
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Nishizawa T, Tsuchiya T, Terasawa Y, Osugi Y. Neurofibromatosis type 1 with subarachnoid haemorrhage from the left vertebral arteriovenous fistula: case presentation and literature review. BMJ Case Rep 2021; 14:14/2/e239880. [PMID: 33619142 PMCID: PMC7903112 DOI: 10.1136/bcr-2020-239880] [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] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
We present the case of a 47-year-old woman with neurofibromatosis type 1 (NF1) with subarachnoid haemorrhage (SAH) from the left vertebral arteriovenous fistula, along with a review of previous cases. Our patient had a family history of NF1 and presented to the emergency department with a sudden-onset severe headache and neck pain. CT scan showed SAH. CT angiography revealed a left vertebral arteriovenous fistula and an epidural haematoma. She underwent direct surgery and was discharged without neurologic deficits. To our knowledge, this is the first case of SAH caused by perimedullary drainage of a vertebral arteriovenous fistula associated with NF1. In a literature search, we identified 40 cases of vertebral arteriovenous fistula associated with NF1. The majority of vertebral arteriovenous fistulas occurred on the left side and in women. Patients with vertebral arteriovenous fistula typically experience neck pain, radiculopathy, radiculomyelopathy and bruits.
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Affiliation(s)
- Toshinori Nishizawa
- Department of General Internal Medicine, St Luke's International University, Chuo-ku, Japan .,Department of General Internal Medicine, Toyota Regional Medical Center, Toyota, Aichi, Japan
| | - Takahiro Tsuchiya
- Department of Neurosurgery, Tokyo University Hospital, Bunkyo-ku, Tokyo, Japan
| | - Yoshihiro Terasawa
- Department of General Internal Medicine, Toyota Regional Medical Center, Toyota, Aichi, Japan,Department of General Internal Medicine, Kuchinotsu Hospital, Minamishimabara, Nagasaki, Japan
| | - Yasuhiro Osugi
- Department of General Internal Medicine, Toyota Regional Medical Center, Toyota, Aichi, Japan,Department of Community Based Medicine, Fujita Health University, Toyoake, Aichi, Japan
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29
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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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30
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Mizuno T, Tomita N, Takaoka T, Tomida M, Fukuma H, Tsuchiya T, Shibamoto Y. Dosimetric Comparison of Helical Tomotherapy, Volumetric-Modulated Arc Therapy, and Intensity-Modulated Proton Therapy for Angiosarcoma of the Scalp. Technol Cancer Res Treat 2021; 20:1533033820985866. [PMID: 33517860 PMCID: PMC7871283 DOI: 10.1177/1533033820985866] [Citation(s) in RCA: 3] [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] [Indexed: 11/18/2022] Open
Abstract
Objective: We compared radiotherapy plans among helical tomotherapy (HT),
volumetric-modulated arc therapy (VMAT), and intensity-modulated proton
therapy (IMPT) for angiosarcoma of the scalp (AS). Methods: We conducted a planning study for 19 patients with AS. The clinical target
volume (CTV) 1 and CTV2 were defined as the gross tumor volume with a
specific margin and total scalp, respectively. For HT and VMAT, the planning
target volume (PTV) 1 and PTV2 were defined as CTV1 and CTV2 with 0.5-cm
margins, respectively. For IMPT, robust optimization was used instead of a
CTV-PTV margin (i.e. CTV robust). The targets of the HT and VMAT plans were
the PTV, whereas the IMPT plans targeted the CTV robust. In total, 70 Gy and
56 Gy were prescribed as the D95% (i.e. dose to 95% volume) of PTV1 (or CTV1
robust) and PTV2 (or CTV2 robust), respectively, using the simultaneous
integrated boost (SIB) technique. Other constraint goals were also defined
for the target and organs at risk (OAR). Results: All dose constraint parameters for the target and OAR met the goals within
the acceptable ranges for the 3 techniques. The coverage of the targets
replaced by D95% and D98% were almost equivalent among the 3 techniques. The
homogeneity index of PTV1 or CTV1 robust was equivalent among the 3
techniques, whereas that of PTV2 or CTV2 robust was significantly higher in
the IMPT plans than in the other plans. IMPT reduced the Dmean of the brain
and hippocampus by 49% to 95%, and the Dmax of the spinal cord, brainstem,
and optic pathway by 70% to 92% compared with the other techniques. Conclusion: The 3 techniques with SIB methods provided sufficient coverage and
satisfactory homogeneity for the targets, but IMPT achieved the best OAR
sparing.
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Affiliation(s)
- Tomoki Mizuno
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - Natsuo Tomita
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - Taiki Takaoka
- Narita Memorial Proton Center, Toyohashi, Aichi, Japan
| | | | - Hiroshi Fukuma
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - Takahiro Tsuchiya
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - Yuta Shibamoto
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, 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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Okai N, Miyamoto K, Tomoo K, Tsuchiya T, Komano J, Tanabe T, Funahashi T, Tsujibo H. VuuB and IutB reduce ferric-vulnibactin in Vibrio vulnificus M2799. Biometals 2020; 33:187-200. [PMID: 32681432 DOI: 10.1007/s10534-020-00241-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 07/13/2020] [Indexed: 10/23/2022]
Abstract
Vibrio vulnificus, a pathogenic bacterium that causes serious infections in humans, requires iron for growth. Clinical isolate, V. vulnificus M2799, secretes a catecholate siderophore, namely, vulnibactin, to capture iron (III) from the environment. Growth experiments using a deletion mutant indicated that VuuB, a member of the FAD-containing siderophore-interacting protein family, plays a crucial role in Fe3+-vulnibactin reduction. IutB, a member of the ferric-siderophore reductase family, stands a substitute for VuuB in its absence. It remained unclear why V. vulnificus M2799 has two proteins with relevant functions. Here we biochemically characterized VuuB and IutB using purified recombinant proteins. Purified VuuB, a flavoprotein, catalyzed the reduction of Fe3+-nitrilotriacetic acid as its electron acceptor, in the presence of NADH as its electron donor and FAD as its cofactor. IutB catalyzed the reduction of Fe3+-nitrilotriacetic acid, in the presence of NADH, NADPH, or reduced glutathione as its electron donor. The optimal pH values and temperatures of VuuB and IutB were 7.0 and 37 °C, and 8.5 and 45 °C, respectively. On analyzing their ferric-chelate reductase activities, both VuuB and IutB were found to catalyze the reduction of Fe3+-aerobactin, Fe3+-vibriobactin, and Fe3+-vulnibactin. When the biologically relevant substrate, Fe3+-vulnibactin, was used, the levels of ferric-chelate reductase activities were similar between VuuB and IutB. Finally, the mRNA levels were quantified by qRT-PCR in M2799 cells cultivated under low-iron conditions. The number of vuuB mRNA was 8.5 times greater than that of iutB. The expression ratio correlated with the growth of their mutants in the presence of vulnibactin.
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Affiliation(s)
- Naoko Okai
- Department of Microbiology and Infection Control, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka, 569-1094, Japan
| | - Katsushiro Miyamoto
- Department of Microbiology and Infection Control, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka, 569-1094, Japan.
| | - Koji Tomoo
- Department of Physical Chemistry, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka, 569-1094, Japan
| | - Takahiro Tsuchiya
- Department of Microbiology and Infection Control, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka, 569-1094, Japan
| | - Jun Komano
- Department of Microbiology and Infection Control, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka, 569-1094, Japan
| | - Tomotaka Tanabe
- Laboratory of Hygienic Chemistry, College of Pharmaceutical Sciences, Matsuyama University, 4-2 Bunkyo-cho, Matsuyama, Ehime, 790-8578, Japan
| | - Tatsuya Funahashi
- Laboratory of Hygienic Chemistry, College of Pharmaceutical Sciences, Matsuyama University, 4-2 Bunkyo-cho, Matsuyama, Ehime, 790-8578, Japan
| | - Hiroshi Tsujibo
- Department of Microbiology and Infection Control, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka, 569-1094, Japan
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Tsuchida T, Susa K, Kibiki T, Tsuchiya T, Miyamoto K, In Y, Minoura K, Taniguchi T, Ishida T, Tomoo K. Crystal structure of the human tau PHF core domain VQIINK complexed with the Fab domain of monoclonal antibody Tau2r3. FEBS Lett 2020; 594:2140-2149. [PMID: 32282060 DOI: 10.1002/1873-3468.13791] [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] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 04/01/2020] [Accepted: 04/05/2020] [Indexed: 11/05/2022]
Abstract
Neurofibrillary tangles formed by abnormally aggregated tau protein are a histopathological feature of tauopathies. A tau aggregation inhibitor is a potential therapeutic agent for tauopathies. In this study, we prepared a monoclonal antibody for tau, monoclonal antibody to tau protein (Tau2r3), using as epitope the 272 GGKVQIINKKLD283 peptide in the microtubule-binding domain of tau, the key region mediating tau aggregation. We show that Tau2r3 clearly inhibits tau aggregation. To analyze the inhibition mechanism of Tau2r3, we solved the crystal structure of the Fab domain of Tau2r3 (Fab2r3) in complex with the VQIINK peptide. In the Fab2r3-VQIINK structure, the second and sixth polar residues and the fourth hydrophobic residue of VQIINK are crucial for binding to Fab2r3. The structural data for the Fab2r3-VQIINK complex could contribute to the design of new tau aggregation inhibitors.
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Affiliation(s)
- Tomohiro Tsuchida
- Department of Physical Chemistry, Osaka University of Pharmaceutical Sciences, Takatsuki, Japan
| | - Kouki Susa
- Department of Physical Chemistry, Osaka University of Pharmaceutical Sciences, Takatsuki, Japan
| | - Tomohiro Kibiki
- Department of Physical Chemistry, Osaka University of Pharmaceutical Sciences, Takatsuki, Japan
| | - Takahiro Tsuchiya
- Department of Infection Control, Osaka University of Pharmaceutical Sciences, Takatsuki, Japan
| | - Katsushiro Miyamoto
- Department of Infection Control, Osaka University of Pharmaceutical Sciences, Takatsuki, Japan
| | - Yasuko In
- Department of Physical Chemistry, Osaka University of Pharmaceutical Sciences, Takatsuki, Japan
| | - Katsuhiko Minoura
- Department of Physical Chemistry, Osaka University of Pharmaceutical Sciences, Takatsuki, Japan
| | | | - Toshimasa Ishida
- Department of Physical Chemistry, Osaka University of Pharmaceutical Sciences, Takatsuki, Japan
| | - Koji Tomoo
- Department of Physical Chemistry, Osaka University of Pharmaceutical Sciences, Takatsuki, Japan
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Noguchi Y, Toda Y, Esaki H, Matsuyama T, Tachi T, Tsuchiya T, Teramachi H. Association between dipeptidyl peptidase-4 inhibitors and autoimmune disorders: Data mining of the spontaneous reporting system in Japan. Pharmazie 2020; 74:305-309. [PMID: 31109402 DOI: 10.1691/ph.2019.8972] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The main objective of this study is to conduct a disproportionality analysis of adverse events in the Japan Adverse Event Report (JADER) database and evaluate the risk of the DPP-4 inhibitor induced autoimmune disorder, the secondary objective is risk assessment of sex difference and age difference. The proportional reporting ratio (PRR) of frequency-based statistics and Bayesian estimates of the information components (IC) were calculated as a measure of signal detection. Sex difference and age difference were evaluated using signal score calculated from the PRR and the Chi-square. In patients taking DPP-4 inhibitors, 94 reports of autoimmune disorders were detected with both signals; PRR: 4.09, chi-square: 158.26 and IC: 1.66, 95 % confidence interval: 1.32-2.00). For other antidiabetic drugs, no signals were detected. The signal of males was PRR: 4.53, chi-square: 110.91 and signal score: 6.22, the signal of female was PRR: 3.53, chi-square: 47.65 and signal score: 5.12. About age difference, the signal scores were 6.71 for patients over 60 years and 0.56 for patients under 60 years old. This study suggests that the DPP-4 inhibitors, unlike other antidiabetic drugs, were associated with autoimmune disorders. Signals of the DPP-4 inhibitors induced autoimmune disorders were detected in both male and female, but no sex difference was observed, but age difference was observed. Especially attention should be paid to patients over 60 years old.
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Nishioka D, Tsuchiya T, Namiki W, Takayanagi M, Kawamura K, Fujita T, Yukawa R, Horiba K, Kumigashira H, Higuchi T. Surface Proton Conduction of Sm-Doped CeO 2-δ Thin Film Preferentially Grown on Al 2O 3 (0001). Nanoscale Res Lett 2020; 15:42. [PMID: 32065313 PMCID: PMC7026374 DOI: 10.1186/s11671-020-3267-5] [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] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2019] [Accepted: 01/22/2020] [Indexed: 06/10/2023]
Abstract
Sm-doped CeO2-δ (Ce0.9Sm0.1O2-δ; SDC) thin films were prepared on Al2O3 (0001) substrates by radio frequency magnetron sputtering. The prepared thin films were preferentially grown along the [111] direction, with the spacing of the (111) plane (d111) expanded by 2.6% to compensate for a lattice mismatch against the substrate. The wet-annealed SDC thin film, with the reduced d111 value, exhibited surface protonic conduction in the low-temperature region below 100 °C. The O1s photoemission spectrum exhibits H2O and OH- peaks on the SDC surface. These results indicate the presence of physisorbed water layers and the generation of protons on the SDC (111) surface with oxygen vacancies. The protons generated on the SDC surface were conducted through a physisorbed water layer by the Grotthuss mechanism.
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Affiliation(s)
- D Nishioka
- Department of Applied Physics, Tokyo University of Science, Katsushika, Tokyo, 125-8585, Japan.
| | - T Tsuchiya
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki, 305-0044, Japan
| | - W Namiki
- Department of Applied Physics, Tokyo University of Science, Katsushika, Tokyo, 125-8585, Japan
| | - M Takayanagi
- Department of Applied Physics, Tokyo University of Science, Katsushika, Tokyo, 125-8585, Japan
| | - K Kawamura
- Department of Applied Physics, Tokyo University of Science, Katsushika, Tokyo, 125-8585, Japan
| | - T Fujita
- Department of Applied Physics, Tokyo University of Science, Katsushika, Tokyo, 125-8585, Japan
| | - R Yukawa
- Photon Factory, High Energy Accelerator Organization (KEK), Tsukuba, Ibaraki, 305-0801, Japan
| | - K Horiba
- Photon Factory, High Energy Accelerator Organization (KEK), Tsukuba, Ibaraki, 305-0801, Japan
| | - H Kumigashira
- Photon Factory, High Energy Accelerator Organization (KEK), Tsukuba, Ibaraki, 305-0801, Japan
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Sendai, 980-8577, Japan
| | - T Higuchi
- Department of Applied Physics, Tokyo University of Science, Katsushika, Tokyo, 125-8585, Japan
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Tsuchiya T, Umemura R, Kaminaga M, Kushida S, Ohkubo K, Noro SI, Mazaki Y. Paddlewheel Complexes with Azulenes: Electronic Interaction between Metal Centers and Equatorial Ligands. Chempluschem 2020; 84:655-664. [PMID: 31944016 DOI: 10.1002/cplu.201800513] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 12/19/2018] [Indexed: 10/27/2022]
Abstract
Rhodium dinuclear complexes (1-3) with azulene moieties as equatorial ligands were obtained by reacting Rh2 (OAc)4 with guaiazulene-2-carboxylic acid, azulene-2-carboxylic acid, and azulene-1-carboxylic acid, respectively. The molecular structures in their crystalline states were determined by X-ray diffraction to be 1 ⋅ (H2 O)2 , 1 ⋅ (MeCN)2 , 2 ⋅ (MeCN)2 , and 3 ⋅ (DMF)2 , which were coordinated with the crystallization solvent at the axial positions. Among these, the crystal packing of 1 ⋅ (H2 O)2 , 1 ⋅ (MeCN)2 , and 3 ⋅ (DMF)2 revealed the formation of one-dimensional stacked chains nearly along the axial direction and of two-dimensional stacked sheets along the equatorial direction. In addition, it was found that 1 ⋅ (H2 O)2 contained cavities that could adsorb CO2 , thereby inducing structural changes. Furthermore, redox measurements revealed the stepwise one-electron redox behaviors of these complexes, indicating the intramolecular interactions between the azulene units. In addition, transient absorption measurements suggested the presence of an ultrafast intersystem crossing caused by the heavy-atom effect of rhodium, and an extended lifetime of the triplet state due to the energy migration among the azulene ligands.
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Affiliation(s)
- Takahiro Tsuchiya
- Department of Chemistry Graduate School of Science, Kitasato University 1-15-1 Kitasato Minami-ku, Sagamihara, Kanagawa, 252-0373, Japan
| | - Reiya Umemura
- Department of Chemistry Graduate School of Science, Kitasato University 1-15-1 Kitasato Minami-ku, Sagamihara, Kanagawa, 252-0373, Japan
| | - Mutsumi Kaminaga
- Department of Chemistry Graduate School of Science, Kitasato University 1-15-1 Kitasato Minami-ku, Sagamihara, Kanagawa, 252-0373, Japan
| | - Shunsuke Kushida
- Department of Chemistry Graduate School of Science, Kitasato University 1-15-1 Kitasato Minami-ku, Sagamihara, Kanagawa, 252-0373, Japan
| | - Kei Ohkubo
- Institute for Advanced Co-Creation Studies and Open and Transdisciplinary Research Initiatives, Osaka University 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - Shin-Ichiro Noro
- Graduate School of Environmental Science, Hokkaido University N10 W5, Kita-ku, Sapporo, 060-0810, Japan
| | - Yasuhiro Mazaki
- Department of Chemistry Graduate School of Science, Kitasato University 1-15-1 Kitasato Minami-ku, Sagamihara, Kanagawa, 252-0373, Japan
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Tsuchiya T, Katsuoka Y, Yoza K, Sato H, Mazaki Y. Stereochemistry, Stereodynamics, and Redox and Complexation Behaviors of 2,2'-Diaryl-1,1'-Biazulenes. Chempluschem 2020; 84:1659-1667. [PMID: 31943874 DOI: 10.1002/cplu.201900262] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 06/25/2019] [Indexed: 11/11/2022]
Abstract
2,2'-Diaryl-1,1'-biazulenes were synthesized and electronic communication between the azulene subunits was suggested based on redox measurements. The linkage of azulene at the 1-position also appeared to increase the HOMO levels. In addition, cyclic voltammetry measurements of 2-arylazulenes showed a return peak associated with the oxidation, which was not observed for azulene. The stabilization of the single-electron oxidant may be due to the SOMO-HOMO energy inversion phenomenon. X-ray crystallography of the azulene dimers revealed that this species possessed a syn-type structure in which both aryl groups in the 2-positions formed π-stacks. The twisted structure was indicated to be in the (R)- or (S)-configuration for all molecules in the unit cell. Spontaneous resolution was also shown. Furthermore, from the solid circular dichroism (CD) spectral measurements, the relationship between the absolute configuration of the molecules and the CD spectra was determined. A racemization rotational barrier of ca. 27 kcal mol-1 was calculated. Moreover, the pyridylazulene dimer cyclized upon reaction with PdCl2 to form a 3 : 3 complex, in which the biazulene units cyclized to give ratios between the (R)- and (S)-forms of either 2 : 1 or 1 : 2.
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Affiliation(s)
- Takahiro Tsuchiya
- Department of Chemistry, Graduate School of Science, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa, 252-0373, Japan
| | - Yuka Katsuoka
- Department of Chemistry, Graduate School of Science, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa, 252-0373, Japan
| | - Kenji Yoza
- Bruker Japan, 3-9 Moriya-cho, Kanagawa-ku, Yokohama, 221-0022, Japan
| | - Hiroyasu Sato
- Rigaku Corporation, 3-9-12 Matsubara, Akishima, Tokyo, 196-8666, Japan
| | - Yasuhiro Mazaki
- Department of Chemistry, Graduate School of Science, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa, 252-0373, Japan
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Tsuchiya T, Katsuoka Y, Yoza K, Sato H, Mazaki Y. Stereochemistry, Stereodynamics, and Redox and Complexation Behaviors of 2,2'-Diaryl-1,1'-Biazulenes. Chempluschem 2020; 84:1647. [PMID: 31943871 DOI: 10.1002/cplu.201900597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Invited for this month's cover are Takahiro Tsuchiya and Yasuhiro Mazaki, and their colleague Yuka Katsuoka, from Kitasato University, Japan, along with collaborators from Bruker Japan (Kenji Yoza) and Rigaku Corporation (Hiroyasu Sato). The cover picture shows the twisted structure of 2,2'-di(pyridin-4-yl)-1,1'-biazulenes, which form a 3:3 cyclic complex with PdCl2 . The rotation of the bonds at the 1,1'-positions of the azulene subunits was padlocked by the complexation. Read the full text of the article at 10.1002/cplu.201900262.
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Affiliation(s)
- Takahiro Tsuchiya
- Department of Chemistry, Graduate School of Science, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa, 252-0373, Japan
| | - Yuka Katsuoka
- Department of Chemistry, Graduate School of Science, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa, 252-0373, Japan
| | - Kenji Yoza
- Bruker Japan, 3-9 Moriya-cho, Kanagawa-ku, Yokohama, 221-0022, Japan
| | - Hiroyasu Sato
- Rigaku Corporation, 3-9-12 Matsubara, Akishima, Tokyo, 196-8666, Japan
| | - Yasuhiro Mazaki
- Department of Chemistry, Graduate School of Science, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa, 252-0373, Japan
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Taniguchi D, Matsumoto K, Machino R, Takeoka Y, Elgalad A, Taura Y, Oyama S, Tetsuo T, Moriyama M, Takagi K, Kunizaki M, Tsuchiya T, Miyazaki T, Hatachi G, Matsuo N, Nakayama K, Nagayasu T. Human lung microvascular endothelial cells as potential alternatives to human umbilical vein endothelial cells in bio-3D-printed trachea-like structures. Tissue Cell 2019; 63:101321. [PMID: 32223949 DOI: 10.1016/j.tice.2019.101321] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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: 08/27/2019] [Revised: 11/29/2019] [Accepted: 12/02/2019] [Indexed: 11/28/2022]
Abstract
BACKGROUND We have been trying to produce scaffold-free structures for airway regeneration using a bio-3D-printer with spheroids, to avoid scaffold-associated risks such as infection. Previous studies have shown that human umbilical vein endothelial cells (HUVECs) play an important role in such structures, but HUVECs cannot be isolated from adult humans. The aim of this study was to identify alternatives to HUVECs for use in scaffold-free structures. METHODS Three types of structure were compared, made of chondrocytes and mesenchymal stem cells with HUVECs, human lung microvascular endothelial cells (HMVEC-Ls), and induced pluripotent stem cell (iPSC)-derived endothelial cells. RESULTS No significant difference in tensile strength was observed between the three groups. Histologically, some small capillary-like tube formations comprising CD31-positive cells were observed in all groups. The number and diameters of such formations were significantly lower in the iPSC-derived endothelial cell group than in other groups. Glycosaminoglycan content was significantly lower in the iPSC-derived endothelial cell group than in the HUVEC group, while no significant difference was observed between the HUVEC and HMVEC-L groups. CONCLUSIONS HMVEC-Ls can replace HUVECs as a cell source for scaffold-free trachea-like structures. However, some limitations were associated with iPSC-derived endothelial cells.
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Affiliation(s)
- D Taniguchi
- Department of Surgical Oncology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan; Medical-engineering Hybrid Professional Development Program, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan
| | - K Matsumoto
- Department of Surgical Oncology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan; Medical-engineering Hybrid Professional Development Program, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan.
| | - R Machino
- Department of Surgical Oncology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan
| | - Y Takeoka
- Department of Surgical Oncology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan; Medical-engineering Hybrid Professional Development Program, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan
| | - A Elgalad
- Department of Surgical Oncology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan; Medical-engineering Hybrid Professional Development Program, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan
| | - Y Taura
- Department of Surgical Oncology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan
| | - S Oyama
- Department of Surgical Oncology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan; Medical-engineering Hybrid Professional Development Program, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan
| | - T Tetsuo
- Department of Surgical Oncology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan; Medical-engineering Hybrid Professional Development Program, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan
| | - M Moriyama
- Department of Surgical Oncology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan; Medical-engineering Hybrid Professional Development Program, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan
| | - K Takagi
- Medical-engineering Hybrid Professional Development Program, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan
| | - M Kunizaki
- Department of Surgical Oncology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan
| | - T Tsuchiya
- Department of Surgical Oncology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan
| | - T Miyazaki
- Department of Surgical Oncology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan
| | - G Hatachi
- Department of Surgical Oncology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan; Medical-engineering Hybrid Professional Development Program, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan
| | - N Matsuo
- Department of Surgical Oncology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan; Medical-engineering Hybrid Professional Development Program, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan
| | - K Nakayama
- Department of Regenerative Medicine and Biomedical Engineering Faculty of Medicine, Saga University, 1 Honjocho, Saga, 840-8502, Japan
| | - T Nagayasu
- Department of Surgical Oncology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan; Medical-engineering Hybrid Professional Development Program, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan
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Tsuchiya T, Kume T, Akiyama K, Yoshitsugu K, Fukaya M, Enami T, Tatara R, Shino M, Ikeda T. The prophylactic effect of 0.1% fluorometholone eye drops on eye disorders caused by high-dose cytarabine. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz434.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Tsuchiya T, Katsuoka Y, Yoza K, Sato H, Mazaki Y. Front Cover: Stereochemistry, Stereodynamics, and Redox and Complexation Behaviors of 2,2′‐Diaryl‐1,1′‐Biazulenes (ChemPlusChem 11/2019). Chempluschem 2019. [DOI: 10.1002/cplu.201900559] [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: 11/07/2022]
Affiliation(s)
- Takahiro Tsuchiya
- Department of ChemistryGraduate School of ScienceKitasato University 1-15-1 Kitasato, Minami-ku Sagamihara, Kanagawa 252-0373 Japan
| | - Yuka Katsuoka
- Department of ChemistryGraduate School of ScienceKitasato University 1-15-1 Kitasato, Minami-ku Sagamihara, Kanagawa 252-0373 Japan
| | - Kenji Yoza
- Bruker Japan 3-9 Moriya-cho, Kanagawa-ku Yokohama 221-0022 Japan
| | - Hiroyasu Sato
- Rigaku Corporation 3-9-12 Matsubara, Akishima Tokyo 196-8666 Japan
| | - Yasuhiro Mazaki
- Department of ChemistryGraduate School of ScienceKitasato University 1-15-1 Kitasato, Minami-ku Sagamihara, Kanagawa 252-0373 Japan
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Tsuchiya T, Naitoh T, Nagao M, Tanaka N, Watanabe K, Imoto H, Miyachi T, Motoi F, Unno M. Increased Bile Acid Signals After Duodenal-Jejunal Bypass Improve Non-alcoholic Steatohepatitis (NASH) in a Rodent Model of Diet-Induced NASH. Obes Surg 2019; 28:1643-1652. [PMID: 29235014 DOI: 10.1007/s11695-017-3065-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
BACKGROUND The increasing incidence of non-alcoholic steatohepatitis (NASH) has resulted in it becoming a common cause of liver-related mortality; however, no efficient treatment has been established. It has been reported that bariatric surgery improves metabolic comorbidities, such as diabetes mellitus and NASH. Although the mechanism is unclear, it is thought that the changes in bile acid (BA) signaling via its nuclear receptor, farnesoid X receptor (FXR), produce various metabolic effects. We sought to investigate the effects and mechanisms of bariatric surgery on NASH improvement. METHODS Male Sprague-Dawley rats were fed by a high-fat and high-fructose diet, which results in obesity, insulin resistance, and NASH. Rats underwent duodenal-jejunal bypass (DJB), which is a main component of bariatric procedures. The liver pathological findings and the expression level of mRNA of FXR were investigated. The plasma BA level was measured in peripheral and portal vein blood. RESULTS DJB suppressed weight gain, improved insulin resistance, and ameliorated NASH mainly in a point of inflammation. The plasma BA level along with the expression of FXR and its target transcriptional factor, small heterodimer partner (SHP), in the liver were elevated. CONCLUSIONS DJB has a direct effect on NASH improvement, and there is a possibility that an anti-inflammatory effect is functioning as a part of the mechanism. The increase of plasma bile acid level followed by the stimulation of FXR signaling may contribute to this phenomenon.
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Affiliation(s)
- Takahiro Tsuchiya
- Department of Surgery, Tohoku University Graduate School of Medicine, 1-1, Seiryo-machi, Aoba-ku, Sendai, 980-8574, Japan
| | - Takeshi Naitoh
- Department of Surgery, Tohoku University Graduate School of Medicine, 1-1, Seiryo-machi, Aoba-ku, Sendai, 980-8574, Japan.
| | - Munenori Nagao
- Department of Surgery, Tohoku University Graduate School of Medicine, 1-1, Seiryo-machi, Aoba-ku, Sendai, 980-8574, Japan
| | - Naoki Tanaka
- Department of Surgery, Tohoku University Graduate School of Medicine, 1-1, Seiryo-machi, Aoba-ku, Sendai, 980-8574, Japan
| | - Kazuhiro Watanabe
- Department of Surgery, Tohoku University Graduate School of Medicine, 1-1, Seiryo-machi, Aoba-ku, Sendai, 980-8574, Japan
| | - Hirofumi Imoto
- Department of Surgery, Tohoku University Graduate School of Medicine, 1-1, Seiryo-machi, Aoba-ku, Sendai, 980-8574, Japan
| | - Tomohiro Miyachi
- Department of Surgery, Tohoku University Graduate School of Medicine, 1-1, Seiryo-machi, Aoba-ku, Sendai, 980-8574, Japan
| | - Fuyuhiko Motoi
- Department of Surgery, Tohoku University Graduate School of Medicine, 1-1, Seiryo-machi, Aoba-ku, Sendai, 980-8574, Japan
| | - Michiaki Unno
- Department of Surgery, Tohoku University Graduate School of Medicine, 1-1, Seiryo-machi, Aoba-ku, Sendai, 980-8574, Japan
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Noguchi Y, Nagasawa H, Tachi T, Tsuchiya T, Teramachi H. Signal detection of oral drug-induced dementia in chronic kidney disease patients using association rule mining and Bayesian confidence propagation neural network. Pharmazie 2019; 74:570-574. [PMID: 31484600 DOI: 10.1691/ph.2019.9426] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 09/29/2022]
Abstract
Among the mechanisms responsible for cognitive dysfunction in chronic kidney disease (CKD) are albuminuria and oxidative stress. However, there may be other causes not yet identified. In fact, the full relevance of CKD patient drug use and its relationship to dementia has hardly been barely investigated. We identified drugs affecting cognitive function in CKD patients by analyzing the spontaneous reporting system in Japan using Association rule mining (ARM) and Bayesian confidence propagation neural network (BCPNN). The signal detection criterion used were as follows: case ≥ 3, lift > 1, conviction > 1 (ARM) and IC025 >0 (BCPNN). Drugs with more than 20 cases were valaciclovir (lift: 11.21, conviction: 1.28, IC025: 3.12), amantadine (lift: 19.69, conviction: 1.68, IC025: 3.05), nalfurafine (lift: 8.35, conviction: 1.19, IC025: 2.18), pregabalin (lift: 6.05, conviction: 1.12, IC025: 1.78), and acyclovir (lift: 5.89, conviction: 1.12, IC025: 1.68). This study is the first report to use a large-scale medical database to identify drugs related to oral drugs-induced dementia in CKD.
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Tsuchiya T, Umemura R, Kaminaga M, Kushida S, Ohkubo K, Noro S, Mazaki Y. Cover Feature: Paddlewheel Complexes with Azulenes: Electronic Interaction between Metal Centers and Equatorial Ligands (ChemPlusChem 6/2019). Chempluschem 2019. [DOI: 10.1002/cplu.201900239] [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: 11/08/2022]
Affiliation(s)
- Takahiro Tsuchiya
- Department of Chemistry Graduate School of ScienceKitasato University 1-15-1 Kitasato Minami-ku, Sagamihara Kanagawa 252-0373 Japan
| | - Reiya Umemura
- Department of Chemistry Graduate School of ScienceKitasato University 1-15-1 Kitasato Minami-ku, Sagamihara Kanagawa 252-0373 Japan
| | - Mutsumi Kaminaga
- Department of Chemistry Graduate School of ScienceKitasato University 1-15-1 Kitasato Minami-ku, Sagamihara Kanagawa 252-0373 Japan
| | - Shunsuke Kushida
- Department of Chemistry Graduate School of ScienceKitasato University 1-15-1 Kitasato Minami-ku, Sagamihara Kanagawa 252-0373 Japan
| | - Kei Ohkubo
- Institute for Advanced Co–Creation Studies and Open and Transdisciplinary Research InitiativesOsaka University 2-1 Yamada-oka, Suita Osaka 565-0871 Japan
| | - Shin‐Ichiro Noro
- Graduate School of Environmental ScienceHokkaido University N10 W5, Kita-ku Sapporo 060-0810 Japan
| | - Yasuhiro Mazaki
- Department of Chemistry Graduate School of ScienceKitasato University 1-15-1 Kitasato Minami-ku, Sagamihara Kanagawa 252-0373 Japan
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Wang Z, Sugie C, Nakashima M, Kondo T, Iwata H, Tsuchiya T, Shibamoto Y. Changes in the Proliferation Rate, Clonogenicity, and Radiosensitivity of Cultured Cells During and After Continuous Low-Dose-Rate Irradiation. Dose Response 2019; 17:1559325819842733. [PMID: 31040760 PMCID: PMC6477768 DOI: 10.1177/1559325819842733] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 03/04/2019] [Accepted: 03/17/2019] [Indexed: 01/28/2023] Open
Abstract
We investigated the effects of continuous low-dose radiation on proliferation,
clonogenicity, radiosensitivity, and repair of DNA double-strand breaks (DSBs)
in human salivary gland (HSG) tumor cells. Human salivary gland cells were
cultured on acrylic boards above very-low-dose (4.3 μSv/h) or low-dose (27
μSv/h) radiation-emitting sheets or without sheets. Total cell numbers and
plating efficiencies were compared among the 3 groups every 1 or 2 weeks until 6
weeks after starting culture. At 2, 4, and 6 weeks, surviving fractions of HSG
cells after irradiation at 2 to 8 Gy cultured on the very-low-dose or low-dose
sheets were compared to those of the control. At 4 weeks, HSG cells irradiated
at 2 Gy were assessed for phosphorylated histone (γH2AX) foci formation, and
DSBs were evaluated. No significant differences were observed in total cell
number or plating efficiencies with or without low-dose-emitting sheets. The
surviving fractions after irradiation of the very-low-dose group at 2 to 6 weeks
and those of the low-dose group at 2 to 4 weeks were higher than those of the
control (P < .01). Thus, a radioadaptive response was
clearly demonstrated. From the γH2AX foci quantification, the adaptive responses
were considered to be associated with the efficient repair of DSB, especially
slow repair, in this cell line.
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Affiliation(s)
- Zhen Wang
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Chikao Sugie
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Masahiro Nakashima
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Takuhito Kondo
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Hiromitsu Iwata
- Department of Radiation Oncology, Nagoya Proton Therapy Center, Nagoya City West Medical Center, Nagoya, Japan
| | | | - Yuta Shibamoto
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
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Kan H, Eguchi Y, Tsuchiya T, Kondo T, Kitagawa Y, Mekata Y, Fukuma H, Yoshida R, Kasai H, Kunitomo H, Hirose Y, Shibamoto Y. Geometric discrepancy of image-guided radiation therapy in patients with prostate cancer without implanted fiducial markers using a commercial pseudo-CT generation method. Phys Med Biol 2019; 64:06NT01. [DOI: 10.1088/1361-6560/ab02cc] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Komeda S, Yoneyama H, Uemura M, Tsuchiya T, Hoshiyama M, Sakazaki T, Hiramoto K, Harusawa S. Synthesis and structure-activity relationships of tetrazolato-bridged dinuclear platinum(II) complexes: A small modification at tetrazole C5 markedly influences the in vivo antitumor efficacy. J Inorg Biochem 2019; 192:82-86. [PMID: 30612029 DOI: 10.1016/j.jinorgbio.2018.12.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 12/17/2018] [Accepted: 12/21/2018] [Indexed: 02/04/2023]
Abstract
We synthesized and characterized 15 new derivatives of the highly anticancer-active platinum(II) complex [{cis-Pt(NH3)2}2(μ-OH)(μ-tetrazolato-N2,N3)]2+ (5-H-Y) by making substitutions at tetrazole C5. We then evaluated the comprehensive structure-cytotoxicity relationships of a total of 23 derivatives in two murine lymphocytic leukaemia cell lines, sensitive and resistant to cisplatin. We also report the in vivo antitumor efficacy of three ester derivatives, two of which exhibited much higher efficacy than oxaliplatin against mouse homografted Colon-26 colorectal tumor.
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Affiliation(s)
- Seiji Komeda
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka 513-8670, Japan.
| | - Hiroki Yoneyama
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan
| | - Masako Uemura
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka 513-8670, Japan
| | - Takahiro Tsuchiya
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka 513-8670, Japan
| | - Miyuu Hoshiyama
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka 513-8670, Japan
| | - Tomoya Sakazaki
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka 513-8670, Japan
| | - Keiichi Hiramoto
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka 513-8670, Japan
| | - Shinya Harusawa
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan.
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Inoue K, Ueno T, Akishige N, Soeta T, Tsuchiya T, Nakayama S, Shima K, Goto S, Takahashi M, Naitoh T, Naito H. What is the optimal risk scoring for predicting complications after colorectal surgery in elderly patients? International Journal of Surgery Open 2019. [DOI: 10.1016/j.ijso.2019.11.007] [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: 10/25/2022]
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Fukushima Y, Someya M, Nakata K, Hori M, Kitagawa M, Hasegawa T, Tsuchiya T, Gocho T, Ikeda H, Hirohashi Y, Torigoe T, Sugita S, Hasegawa T, Himi T, Sakata K. Influence of PD-L1 Expression in Immune Cells on the Response to Radiation Therapy in Patients with Oropharyngeal Squamous Cell Carcinoma. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Nakata K, Hanai T, Take Y, Osada T, Tsuchiya T, Shima D, Fujimoto Y. Disease-modifying effects of COX-2 selective inhibitors and non-selective NSAIDs in osteoarthritis: a systematic review. Osteoarthritis Cartilage 2018; 26:1263-1273. [PMID: 29890262 DOI: 10.1016/j.joca.2018.05.021] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [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: 12/19/2017] [Revised: 05/16/2018] [Accepted: 05/20/2018] [Indexed: 02/02/2023]
Abstract
Osteoarthritis (OA) is a potentially disabling disease whose progression is dependent on several risk factors. OA management usually involves the use of non-steroidal anti-inflammatory drugs (NSAIDs) that are the primary pharmacological treatments of choice. However, NSAIDs have often been associated with unwanted side effects. Cyclooxygenase (COX)-2 specific inhibitors, such as celecoxib, have been successfully used as an alternative in the past for OA treatment and have demonstrated fewer side effects. While abundant data are available for the clinical efficacy of drugs used for OA treatment, little is known about the disease-modifying effects of these agents. A previous review published by Zweers et al. (2010) assessed the available literature between 1990 and 2010 on the disease-modifying effects of celecoxib. In the present review, we aimed to update the existing evidence and identify evolving concepts relating to the disease-modifying effects of not just celecoxib, but also other NSAIDs. We conducted a review of the literature published from 2010 to 2016 dealing with the effects, especially disease-modifying effects, of NSAIDs on cartilage, synovium, and bone in OA patients. Our results show that celecoxib was the most commonly used drug in papers that presented data on disease-modifying effects of NSAIDs. Further, these effects appeared to be mediated through the regulation of prostaglandins, cytokines, and direct changes to tissues. Additional studies should be carried out to assess the disease-modifying properties of NSAIDs in greater detail.
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Affiliation(s)
- K Nakata
- Medicine for Sports and Performing Arts, Department of Health and Sports Science, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, Suita, Osaka 565-0871 Japan.
| | - T Hanai
- Medicine for Sports and Performing Arts, Department of Health and Sports Science, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, Suita, Osaka 565-0871 Japan
| | - Y Take
- Medicine for Sports and Performing Arts, Department of Health and Sports Science, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, Suita, Osaka 565-0871 Japan
| | - T Osada
- Pfizer Japan Inc., Shinjuku Bunka Quint Bldg. 3-22-7, Yoyogi, Shibuya-ku, Tokyo 151-8589 Japan
| | - T Tsuchiya
- Pfizer Japan Inc., Shinjuku Bunka Quint Bldg. 3-22-7, Yoyogi, Shibuya-ku, Tokyo 151-8589 Japan
| | - D Shima
- Pfizer Japan Inc., Shinjuku Bunka Quint Bldg. 3-22-7, Yoyogi, Shibuya-ku, Tokyo 151-8589 Japan
| | - Y Fujimoto
- Pfizer Japan Inc., Shinjuku Bunka Quint Bldg. 3-22-7, Yoyogi, Shibuya-ku, Tokyo 151-8589 Japan
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