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Sano H, Komatsuda T, Suzuki K, Abe H, Ozawa H, Kumagai J, Yokobori TA. Determining optimal length of coracoid graft in the modified Bristow procedure for anterior shoulder instability: A three-dimensional finite element analysis. Biomed Mater Eng 2024; 35:65-75. [PMID: 37424459 DOI: 10.3233/bme-230071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/11/2023]
Abstract
BACKGROUND There is a lack of consensus concerning the coracoid graft length in the modified Bristow procedure. OBJECTIVE We attempted to determine the optimal graft length using the three-dimensional finite element method. METHODS In a shoulder model with a 25% anterior glenoid defect, a coracoid graft of varying lengths (5, 10, 15, and 20 mm) was fixed using a half-threaded screw. First, a compressive load of 500 N was applied to the screw head to determine the graft failure load during screw tightening. Next, a tensile load (200 N) was applied to the graft to determine the failure load due to biceps muscle traction. RESULTS In the screw compression, the failure loads in the 5-, 10-, 15-, and 20-mm models were 252, 370, 377, and 331 N, respectively. In the tensile load applied to the coracoid graft, the failure load exceeded 200 N for both the 5- and 10-mm models. CONCLUSION The 5-mm graft had a high risk of fracture during intraoperative screw tightening. As for the biceps muscle traction, the 5- and 10-mm-grafts had a lower failure risk than the 15- and 20-mm-grafts. Therefore, we believe that the optimal length of the coracoid graft is 10 mm in the modified Bristow procedure.
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Affiliation(s)
- Hirotaka Sano
- Division of Orthopedics, Sendai City Hospital, Sendai, Japan
| | | | - Kazuhide Suzuki
- Department of Sports Medicine, Asao General Hospital, Kawasaki, Japan
| | - Hiroo Abe
- Division of Orthopedics, Sendai City Hospital, Sendai, Japan
| | - Hiroshi Ozawa
- Department of Orthopaedic Surgery, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - Jun Kumagai
- Department of Orthopaedic Surgery, Akaishi Hospital, Shiogama, Japan
| | - Toshimitsu A Yokobori
- Laboratory of Strength of Material and Science, Advanced Comprehensive Research Organization, Teikyo University, Tokyo, Japan
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Kumagai J, Adachi A, Nagahama M, Yamada H, Masuda Y, Kitamura H. [A CASE OF ANAPHYLAXIS INDUCED BY VITAMIN B1 DERIVATIVE IN VITAMIN B INFUSION FORMULATION FOR INTRAVENOUS INJECTION]. Arerugi 2023; 72:479-484. [PMID: 37460290 DOI: 10.15036/arerugi.72.479] [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] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
A woman in her 20s presented to our clinic with a lower gastrointestinal infection. When we administered intravenous antibacterial and vitamin infusions, she developed anaphylaxis. We performed skin tests to investigate the cause, and an intradermal test was positive for a 1% intravenous vitamin complex. We then performed a component-specific test, which was positive for thiamine disulfide phosphate, a vitamin B1 derivative. We therefore diagnosed anaphylaxis due to thiamine disulfide phosphate. No previous reports have described cross-reactivity between vitamin B1 derivatives. In our case, however, the patient tested positive for fluthiamine hydrochloride, suggesting cross-reactivity. Intravenous vitamin complexes are used in daily clinical practice and should be administered with caution because of the possibility of anaphylaxis, although it occurs infrequently.
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Affiliation(s)
- Jun Kumagai
- Division of Dermatology, Hyogo Prefectural Kakogawa Medical Center
| | - Atsuko Adachi
- Division of Dermatology, Hyogo Prefectural Kakogawa Medical Center
| | - Minami Nagahama
- Division of Dermatology, Hyogo Prefectural Kakogawa Medical Center
| | - Haruhi Yamada
- Division of Dermatology, Hyogo Prefectural Kakogawa Medical Center
| | - Yoshiyuki Masuda
- Division of Dermatology, Hyogo Prefectural Kakogawa Medical Center
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Tai T, Igarashi H, Takesige Y, Nakamura Y, Hattori H, Nakajo Y, Aono N, Kasajima M, Yoshinaga K, Koizumi M, Hashimoto T, Toya M, Kumagai J, Kyono K. A rare case of spinal and bulbar muscular atrophy (SMBA) diagnosed by hypertestosteronemia during infertility treatment. J Sex Med 2022. [DOI: 10.1016/j.jsxm.2022.03.592] [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: 11/25/2022]
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Nishimura K, Wang Y, Ogura Y, Kumagai J, Ishihara K. A π–Cu(II)−π Complex as an Extremely Active Catalyst for Enantioselective α-Halogenation of N-Acyl-3,5-dimethylpyrazoles. ACS Catal 2022. [DOI: 10.1021/acscatal.1c05500] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Kazuki Nishimura
- Graduate School of Engineering, Nagoya University, Furo-cho, Nagoya 464-8603, Japan
| | - Yanzhao Wang
- Graduate School of Engineering, Nagoya University, Furo-cho, Nagoya 464-8603, Japan
| | - Yoshihiro Ogura
- Graduate School of Engineering, Nagoya University, Furo-cho, Nagoya 464-8603, Japan
| | - Jun Kumagai
- Graduate School of Engineering, Nagoya University, Furo-cho, Nagoya 464-8603, Japan
| | - Kazuaki Ishihara
- Graduate School of Engineering, Nagoya University, Furo-cho, Nagoya 464-8603, Japan
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Harada Y, Kusaka S, Nakajo T, Kumagai J, Kim CR, Shim JY, Hori A, Ma Y, Matsuda R. Stabilization of radical active species in a MOF nanospace to exploit unique reaction pathways. Chem Commun (Camb) 2021; 57:12115-12118. [PMID: 34698751 DOI: 10.1039/d1cc04267j] [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: 11/21/2022]
Abstract
We synthesized a metal-organic framework (MOF) using a ligand bearing haloalkoxy chains as a radical precursor. The radicals generated in the MOF upon photoirradiation were stable even at 250 K or under an O2 atmosphere, despite radicals generated from the ligand decomposing at 200 K; thus, the regular arrangement of radicals effectively stabilized them. Moreover, a unique photoproduct was obtained only in the MOF, indicating that the confinement effect in the nanospace enabled a specific reaction that did not occur in the bulk state. We propose a new platform for exploring chemical reactions and materials based on reactive species.
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Affiliation(s)
- Yuki Harada
- Department of Chemistry and Biotechnology, School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan.
| | - Shinpei Kusaka
- Department of Chemistry and Biotechnology, School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan.
| | - Toshinobu Nakajo
- Department of Chemistry and Biotechnology, School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan.
| | - Jun Kumagai
- Institute of Materials and Systems for Sustainability, Division of Materials Research, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - Cho Rong Kim
- Department of Chemistry and Biotechnology, School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan.
| | - Joo Young Shim
- Department of Chemistry and Biotechnology, School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan.
| | - Akihiro Hori
- Department of Chemistry and Biotechnology, School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan.
| | - Yunsheng Ma
- Department of Chemistry and Biotechnology, School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan. .,School of Chemistry and Materials Engineering, Jiangsu Key Laboratory of Advanced Functional Materials, Changshu Institute of Technology, Changshu, Jiangsu 215500, P. R. China
| | - Ryotaro Matsuda
- Department of Chemistry and Biotechnology, School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan.
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Nakajo T, Kumagai J, Kusaka S, Hori A, Hijikata Y, Pirillo J, Ma Y, Matsuda R. Triplet Carbene with Highly Enhanced Thermal Stability in the Nanospace of a Metal-Organic Framework. J Am Chem Soc 2021; 143:8129-8136. [PMID: 34011147 DOI: 10.1021/jacs.1c02430] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Triplet carbenes (TCs) are of great interest due to their magnetic properties and reactivity, which descend from TCs' unique electronic state. However, the reactivity and stability of TCs are usually a trade-off, and it is difficult to achieve both at the same time. In this work, we were able to enhance the thermal stability of a TC species while maintaining its reactivity by confining them in the nanospace of a metal-organic framework (MOF). We synthesized a new MOF using a TC precursor; subsequently, TCs were generated by photostimulation. The TCs generated in the MOF nanospace were detectable up to 170 K, whereas their non-MOF-confined counterparts (bare ligand) could not be detected above 100 K. In addition, the reactivity of TC generated in MOF with O2 was drastically improved compared to that of bare ligand. Our approach is generally applicable to the stabilization of highly reactive species, whose reactivity needs to be preserved.
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Affiliation(s)
- Toshinobu Nakajo
- Department of Chemistry and Biotechnology, School of Engineering, and Department of Materials Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Jun Kumagai
- Institute of Materials and Systems for Sustainability, Division of Materials Research, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Shinpei Kusaka
- Department of Chemistry and Biotechnology, School of Engineering, and Department of Materials Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Akihiro Hori
- Department of Chemistry and Biotechnology, School of Engineering, and Department of Materials Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Yuh Hijikata
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo 001-0021, Japan
| | - Jenny Pirillo
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo 001-0021, Japan
| | - Yunsheng Ma
- School of Chemistry and Materials Engineering, Jiangsu Key Laboratory of Advanced Functional Materials, Changshu Institute of Technology, Changshu, Jiangsu 215500, P. R. China
| | - Ryotaro Matsuda
- Department of Chemistry and Biotechnology, School of Engineering, and Department of Materials Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
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Kumagai J, Nakamura A, Ogawa S, Washio K. Intravaginal metronidazole ovule-related allergic contact dermatitis. Contact Dermatitis 2021; 85:85-86. [PMID: 33423284 DOI: 10.1111/cod.13782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 01/06/2021] [Indexed: 12/01/2022]
Affiliation(s)
- Jun Kumagai
- Department of Dermatology, Kobe City Nishi-Kobe Medical Center, Kobe, Japan
| | - Ayaka Nakamura
- Department of Dermatology, Kobe City Nishi-Kobe Medical Center, Kobe, Japan
| | - Satoshi Ogawa
- Department of Dermatology, Kobe City Nishi-Kobe Medical Center, Kobe, Japan
| | - Ken Washio
- Department of Dermatology, Kobe City Nishi-Kobe Medical Center, Kobe, Japan
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Abstract
We demonstrated that the ZnII–oxyl bond specifically formed by the zeolite lattice ligation has the capability of transferring the oxyl to CO even at 150 K with the generation of a single ZnI˙ species.
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Affiliation(s)
- Akira Oda
- Precursory Research for Embryonic Science and Technology
- Japan Science and Technology Agency
- Saitama 332-0012
- Japan
- Department of Chemistry
| | - Jun Kumagai
- Institute of Materials and System for Sustainability
- Nagoya University
- Nagoya 464-8601
- Japan
| | - Takahiro Ohkubo
- Department of Chemistry
- Graduate School of Natural Science and Technology
- Okayama University
- Okayama 700-8530
- Japan
| | - Yasushige Kuroda
- Department of Chemistry
- Graduate School of Natural Science and Technology
- Okayama University
- Okayama 700-8530
- Japan
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Imai T, Sato Y, Abe J, Kumagai J, Morita S, Saijo S, Yamazaki T, Asada Y, Matsuura K. Shoulder function after neck dissection: Assessment via a shoulder-specific quality-of-life questionnaire and active shoulder abduction. Auris Nasus Larynx 2020; 48:138-147. [PMID: 32709371 DOI: 10.1016/j.anl.2020.06.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 06/12/2020] [Accepted: 07/01/2020] [Indexed: 12/01/2022]
Abstract
OBJECTIVE Neck dissection results in a high probability of postoperative shoulder functional impairment, even when the spinal accessory nerve is preserved. Therefore, surgeons must inform patients about the expected functional and qualitative recovery of shoulder function after surgery. METHODS The present study included a prospective cohort of 66 patients (85 neck dissection sides) who underwent neck dissection between December 2015 and July 2017 at a single institution. The active shoulder abduction angles of the affected side and the patient-reported shoulder-specific quality-of-life recovery score of the Western Ontario Rotator Cuff (WORC) questionnaire were examined at 1, 3, 6, 9, and 12 months postoperatively. Additionally, the association between these outcomes and risk factors for shoulder impairment were investigated. RESULTS The average active shoulder abduction angles were significantly improved at 3 and 6 months postoperatively compared with 1 month postoperatively (96.5 ± 4.3° at 1 month versus 110.1 ± 4.7° at 3 months, p = 0.035, and versus 142.0 ± 4.6° at 6 months, p < 0.0001). The proportion of patients who were unable to abduct their shoulders by 150° or more was significantly lower at 6 months postoperatively (41.5%) compared with 1 month postoperatively (82.4%, p < 0.0001). The WORC score significantly improved from 60.4 ± 2.4% at 1 month postoperatively to 67.9 ± 2.6% at 6 months postoperatively (p = 0.036). Multivariate analysis revealed that postoperative radiotherapy was a significant risk factor for shoulder impairment at 3 and 6 months postoperatively (p = 0.003 and p = 0.027, respectively), and that level V dissection and head and neck irradiation were significant risk factors for a worse shoulder outcome at 6 and 9 months postoperatively (respective p values for level V dissection and head and neck irradiation were p = 0.049 and p = 0.030 at 6 months postoperatively, and p = 0.016 and p = 0.013 at 9 months postoperatively). CONCLUSION Satisfactory functional and qualitative recovery of shoulder function was achieved at 6 months after neck dissection. Postoperative radiotherapy was a predictor of poor shoulder function in the early postoperative period; both level V dissection and head and neck irradiation were predictors of poor shoulder function at 6 and 9 months after neck dissection.
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Affiliation(s)
- Takayuki Imai
- Department of Head and Neck Surgery, Miyagi Cancer Center, 47-1 Nodayama, Medeshima-Shiode, Natori 981-1293, Miyagi, Japan.
| | - Yuki Sato
- Department of Rehabilitation, Miyagi Cancer Center, Natori, Miyagi, Japan
| | - Jun Abe
- Department of Rehabilitation, Miyagi Cancer Center, Natori, Miyagi, Japan
| | - Jun Kumagai
- Department of Orthopaedic Surgery, Akaishi Hospital, Shiogama, Miyagi, Japan; Department of Physical Therapy, Yamagata Prefectural University of Health Sciences, Yamagata, Yamagata, Japan
| | - Sinkichi Morita
- Department of Head and Neck Surgery, Miyagi Cancer Center, 47-1 Nodayama, Medeshima-Shiode, Natori 981-1293, Miyagi, Japan
| | - Satoshi Saijo
- Department of Head and Neck Surgery, Miyagi Cancer Center, 47-1 Nodayama, Medeshima-Shiode, Natori 981-1293, Miyagi, Japan
| | - Tomoko Yamazaki
- Department of Head and Neck Medical Oncology, Miyagi Cancer Center, Natori, Miyagi, Japan
| | - Yukinori Asada
- Department of Head and Neck Surgery, Miyagi Cancer Center, 47-1 Nodayama, Medeshima-Shiode, Natori 981-1293, Miyagi, Japan
| | - Kazuto Matsuura
- Department of Head and Neck Surgery, Miyagi Cancer Center, 47-1 Nodayama, Medeshima-Shiode, Natori 981-1293, Miyagi, Japan; Department of Head and Neck Surgery, National Cancer Center East, Kashiwa, Chiba, Japan
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10
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Abstract
A single-electron transfer (SET) between tris(pentafluorophenyl)borane (B(C6F5)3) and N,N-dialkylanilines is reported, which is operative via the formation of an electron donor–acceptor (EDA) complex involving π-orbital interactions as a key intermediate under dark conditions or visible-light irradiation depending on the structure of the aniline derivatives. This inherent SET in the Lewis pairs initiates the generation of the corresponding α-aminoalkyl radicals and their additions to electron-deficient olefins, revealing the ability of B(C6F5)3 to act as an effective one-electron redox catalyst. Radical–ion pair generation from common Lewis pairs and its application to catalytic carbon–carbon bond formation.![]()
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Affiliation(s)
- Yoshitaka Aramaki
- Institute of Transformative Bio-Molecules (WPI-ITbM), Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University Nagoya 464-8601 Japan
| | - Naoki Imaizumi
- Institute of Transformative Bio-Molecules (WPI-ITbM), Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University Nagoya 464-8601 Japan
| | - Mao Hotta
- Institute of Transformative Bio-Molecules (WPI-ITbM), Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University Nagoya 464-8601 Japan
| | - Jun Kumagai
- Institute of Materials and Systems for Sustainability, Nagoya University Nagoya 464-8601 Japan
| | - Takashi Ooi
- Institute of Transformative Bio-Molecules (WPI-ITbM), Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University Nagoya 464-8601 Japan .,CREST, Japan Science and Technology Agency (JST), Nagoya University Nagoya 464-8601 Japan
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11
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Taniguchi Y, Yorioka N, Kumagai J, Ogata S, Sakikubo E, Yamakido M. Dextran Sulfate-Cellulose Adsorption in the Management of a Myeloma Patient with Renal Amyloidosis. Int J Artif Organs 2018. [DOI: 10.1177/039139889902200511] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Y. Taniguchi
- Second Department of Internal Medicine, Hiroshima University School of Medicine, Hiroshima - Japan
| | - N. Yorioka
- Second Department of Internal Medicine, Hiroshima University School of Medicine, Hiroshima - Japan
| | - J. Kumagai
- Second Department of Internal Medicine, Hiroshima University School of Medicine, Hiroshima - Japan
| | - S. Ogata
- Second Department of Internal Medicine, Hiroshima University School of Medicine, Hiroshima - Japan
| | - E. Sakikubo
- Second Department of Internal Medicine, Hiroshima University School of Medicine, Hiroshima - Japan
| | - M. Yamakido
- Second Department of Internal Medicine, Hiroshima University School of Medicine, Hiroshima - Japan
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Sasai R, Nii E, Sato H, Fujimura T, Imai S, Kumagai J. Iodide Selectivity and γ-Ray Shielding Ability of a Layered Double Hydroxide. CHEM LETT 2016. [DOI: 10.1246/cl.160775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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13
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Nakano H, Kumagai J, V. Subba Reddy U, Seki C, Okuyama Y, Kwon E. Development of Asymmetric Cycloaddition Reaction Using Amino Alcohol and its Derivative as an Organocatalyst. J SYN ORG CHEM JPN 2016. [DOI: 10.5059/yukigoseikyokaishi.74.720] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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14
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Kumagai J, Otsuki T, Subba Reddy U, Kohari Y, Seki C, Uwai K, Okuyama Y, Kwon E, Tokiwa M, Takeshita M, Nakano H. Chiral primary amino alcohol organobase catalysts for the asymmetric Diels–Alder reactions of anthrones with maleimides. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.tetasy.2015.10.022] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [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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15
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Otsuki T, Kumagai J, Kohari Y, Okuyama Y, Kwon E, Seki C, Uwai K, Mawatari Y, Kobayashi N, Iwasa T, Tokiwa M, Takeshita M, Maeda A, Hashimoto A, Turuga K, Nakano H. Silyloxy Amino Alcohol Organocatalyst for Enantioselective 1,3-Dipolar Cycloaddition of Nitrones to α,β-Unsaturated Aldehydes. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500926] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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16
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Nakano H, Kumagai J, Kohari Y, Seki C, Uwai K, Okuyama Y, Kwon E. Chiral Primary Amino Amide Alcohol Organocatalyst for the Asymmetric Michael Addition of 4-Hydroxycoumarin with α,β-Unsaturated Ketones. HETEROCYCLES 2015. [DOI: 10.3987/com-14-s(k)83] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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17
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Kohari Y, Okuyama Y, Kwon E, Furuyama T, Kobayashi N, Otuki T, Kumagai J, Seki C, Uwai K, Dai G, Iwasa T, Nakano H. Enantioselective Diels–Alder Reaction of 1,2-Dihydropyridines with Aldehydes Using β-Amino Alcohol Organocatalyst. J Org Chem 2014; 79:9500-11. [DOI: 10.1021/jo501433c] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Yoshihito Kohari
- Department
of Bioengineering, Graduate School of Engineering, Muroran Institute of Technology, 27-1
Mizumoto, Muroran 050-8585, Japan
| | - Yuko Okuyama
- Tohoku Pharmaceutical University, 4-4-1 Komatsushima,
Aoba-ku, Sendai 981-8585, Japan
| | - Eunsang Kwon
- Research
and Analytical Center for Giant Molecules, Graduate School of Sciences, Tohoku University, 6-3
Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Taniyuki Furuyama
- Department
of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aoba, Aramaki,
Aoba-ku, Sendai 980-8578, Japan
| | - Nagao Kobayashi
- Department
of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aoba, Aramaki,
Aoba-ku, Sendai 980-8578, Japan
| | - Teppei Otuki
- Department
of Bioengineering, Graduate School of Engineering, Muroran Institute of Technology, 27-1
Mizumoto, Muroran 050-8585, Japan
| | - Jun Kumagai
- Department
of Bioengineering, Graduate School of Engineering, Muroran Institute of Technology, 27-1
Mizumoto, Muroran 050-8585, Japan
| | - Chigusa Seki
- Department
of Bioengineering, Graduate School of Engineering, Muroran Institute of Technology, 27-1
Mizumoto, Muroran 050-8585, Japan
| | - Koji Uwai
- Department
of Bioengineering, Graduate School of Engineering, Muroran Institute of Technology, 27-1
Mizumoto, Muroran 050-8585, Japan
| | - Gang Dai
- College
of Chemistry and Environmental Science, Inner Mongolia Normal University, Huhhot, Inner Mongolia 010022, China
| | - Tatsuo Iwasa
- Division
of Engineering for Composite Functions, Graduate School of Engineering, Muroran Institute of Technology, 27-1 Mizumoto, Muroran 050-8585, Japan
| | - Hiroto Nakano
- Department
of Bioengineering, Graduate School of Engineering, Muroran Institute of Technology, 27-1
Mizumoto, Muroran 050-8585, Japan
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Ikehata H, Kumagai J, Ono T, Morita A. Solar-UV-signature mutation prefers TCG to CCG: extrapolative consideration from UVA1-induced mutation spectra in mouse skin. Photochem Photobiol Sci 2014; 12:1319-27. [PMID: 23471200 DOI: 10.1039/c3pp25444e] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
UVA1 exerts its genotoxicity on mammalian skin by producing cyclobutane pyrimidine dimers (CPDs) in DNA and preferentially inducing solar-UV-signature mutations, C → T base substitution mutations at methylated CpG-associated dipyrimidine (Py-mCpG) sites, as demonstrated previously using a 364 nm laser as a UVA1 source and lacZ-transgenic mice that utilize the transgene as a mutational reporter. In the present study, we confirmed that a broadband UVA1 source induced the same mutation profiles in mouse epidermis as the UVA1 laser, generalizing the previous result from a single 364 nm to a wider wavelength range of UVA1 (340-400 nm). Combined with our previous data on the mutation spectra induced in mouse epidermis by UVB, UVA2 and solar UVR, we proved that the solar-UV-signature mutation is commonly observed in the wavelength range from UVB to UVA, and found that UVA1 induces this mutation more preferentially than the other shorter wavelength ranges. This finding indicates that the solar-UV-signature mutation-causing CPDs, which are known to prefer Py-mCpG sites, could be produced with the energy provided by the longer wavelength region of UVR, suggesting a photochemical reaction through the excitation of pyrimidine bases to energy states that can be accomplished by absorption of even low-energy UVR. On the other hand, the lower proportions of solar-UV-signature mutations observed in the mutation spectra for UVB and solar UVR indicate that the direct photochemical reaction through excited singlet state of pyrimidine bases, which can be accomplished only by high-energy UVR, is also involved in the mutation induction at those shorter wavelengths of UVR. We also found that the solar-UV signature prefers 5'-TCG-3' to 5'-CCG-3' as mutational target sites, consistent with the fact that UVA induces CPDs selectively at thymine-containing dipyrimidine sites and that solar UVR induces them preferably at Py-mCpG sites. However, the mutation spectrum in human p53 gene from non-melanoma skin cancers shows the opposite preference for 5'-CCG-3' sites. This apparent discrepancy in the site preference seems to result from the lack of 5'-TCG-3' sites mutable to missense mutations on the nontranscribed strand of human p53 gene, which should be evolutionally acquired under selective pressure from the sun.
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Affiliation(s)
- Hironobu Ikehata
- Department of Cell Biology, Tohoku University Graduate School of Medicine, Sendai, Japan.
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Sato A, Ishida M, Ishibashi K, Shirasawa H, Akahira S, Miura H, Sato M, Kumagai J, Terada Y. A case of acute aortic dissection in a woman with Marfan syndrome at 29 weeks' gestation. J OBSTET GYNAECOL 2014; 34:358. [PMID: 24476397 DOI: 10.3109/01443615.2013.872608] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- A Sato
- Department of Obstetrics and Gynecology, Akita University School of Medicine , Akita , Japan
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Kashino G, Tamari Y, Kumagai J, Tano K, Watanabe M. Suppressive effect of ascorbic acid on the mutagenesis induced by the bystander effect through mitochondrial function. Free Radic Res 2013; 47:474-9. [DOI: 10.3109/10715762.2013.791025] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Yoshida H, Fujimura Y, Yuzawa H, Kumagai J, Yoshida T. A heterogeneous palladium catalyst hybridised with a titanium dioxide photocatalyst for direct C–C bond formation between an aromatic ring and acetonitrile. Chem Commun (Camb) 2013; 49:3793-5. [DOI: 10.1039/c3cc41068d] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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Kumagai J, Erkens-Schulze S, Dits N, de Wit R, van Weerden W. 296 Relevance of CYP17A1 Blockade in Clones of Castration-resistant Prostate Cancer. Eur J Cancer 2012. [DOI: 10.1016/s0959-8049(12)72094-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Kumagai J, Hirano K, Satoh T, Seki S, Miura M. Effect of the Substitution Pattern of Alkyl Side Chain in a Benzodithiophene Core π-System on Intra and Inter-Molecular Charge Carrier Mobility. J Phys Chem B 2012. [DOI: 10.1021/jp302015f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Abstract
We successfully identified the bystander effect in B16 murine melanoma cells exposed to UVA irradiation. The effect was identified based on melanogenesis following the medium transfer of the B16 cells, which had been cultured for 24 h after being exposed to UVA irradiation, to nonirradiated cells (bystander cells). Our confirmation study of the functional mechanism of bystander cells confirmed the reduced levels of mitochondrial membrane potential 1-4 h after the medium transfer. In addition, we observed increased levels of intracellular oxidation after 9-12 h, and the generation of melanin radicals, including long-lived radicals, 24 h after medium transfer. Further analysis of bystander factors revealed that the administration of EGTA treatment at the time of medium transfer led to an inhibition of melanogenesis and to neutralization of the mitochondrial membrane potential level, as well as to the restoration of intracellular oxidation levels to those of controls. The results demonstrated that the UVA irradiation bystander effect in B16 cells, as indicated by melanogenesis, was induced by the increase in intracellular oxidation due to the mitochondrial activity of calcium ions, which were among the bystander factors involved in the increase.
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Affiliation(s)
- Hideki Nishiura
- Division of Radiation Life Science, Department of Radiation Life Science and Radiation Medical Science, Kyoto University Research Reactor Institute, Sennan-gun, Osaka, Japan
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Kumagai J, Hirano K, Satoh T, Seki S, Miura M. Effect of the Substitution Pattern of Alkyl Side Chain in a Benzodithiophene Core π-System on Intra and Inter-Molecular Charge Carrier Mobility. J Phys Chem B 2011; 115:8446-52. [DOI: 10.1021/jp2036668] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jun Kumagai
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Koji Hirano
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Tetsuya Satoh
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Shu Seki
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Masahiro Miura
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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He H, Emmett MR, Marshall AG, Ji Y, Conrad CA, Priebe W, Colman H, Lang FF, Madden TL, Kristoffersen K, Stockhausen MT, Poulsen HS, Binder ZA, Orr B, Lim M, Weingart JD, Brem H, Olivi A, Riggins GJ, Gallia GL, Litofsky NS, Miller DC, Rath P, Anthony DC, Feng Q, Franklin C, Pei L, Free A, Kirk MD, Shi H, Timmer M, Theiss H, Juerchott K, Ries C, Paron I, Franz W, Selbig J, Guo K, Tonn JC, Schichor C, Zhou YH, Hu Y, Pioli PD, Rajneesh K, Limoli CL, Yu L, Hess KR, Linskey ME, Faber F, Guo K, Jaeger D, Thorsteinsdottir J, Albrecht V, Tonn JC, Schichor C, Price R, Song J, Zimmerman P, Duale H, Rivera A, Kaur B, Parada L, Cook C, Chiocca EA, Kwon CH, Munoz DM, Guha A, Estrada-Bernal A, Van Brocklyn JR, Gu C, Mahasenan KV, Joshi K, Gupta S, Mattson A, Li C, Nakano I, Chi AS, Rheinbay E, Wakimoto H, Gillespie S, Kasif S, Rabkin SD, Martuza RL, Bernstein BE, Skirboll SL, Wurdak H, Zhu S, Romero A, Lorger M, Watson J, Chiang CY, Zhang J, Natu VS, Lairson LL, Walker JR, Trussell CM, Harsh GR, Vogel H, Felding-Habermann B, Orth AP, Miraglia LJ, Rines DR, Schultz PG, Hide T, Takezaki T, Nakamura H, Makino K, Kuratsu JI, Kondo T, Yao J, Kim YW, Koul D, Almeida JS, Weinstein JN, Alfred Yung WK, Joshi K, Miyazaki T, Chaudhury AR, Nakano I, Wong AJ, Del Vecchio C, Mitra S, Han SY, Holgado-Madruga M, Gupta P, Golebiewska A, Brons NH, Bjerkvig R, Niclou SP, Ramm P, Vollmann-Zwerenz A, Beier C, Aigner L, Bogdahn U, Kalbitzer HR, Hau P, Sanzey M, Golebiewska A, Vallar L, Niclou SP, Tamura K, Aoyagi M, Ando N, Ogishima T, Wakimoto H, Yamamoto M, Ohno K, Perin A, Fung KH, Longatti P, Guiot MC, Del Maestro RF, Rossi S, Stechishin O, Weiss S, Stifani S, Goodman L, Gao F, Gumin J, Ezhilarasan R, Love P, George A, Colman H, Lang F, Aldape K, Sulman EP, Soeda A, Lee DH, Shaffrey ME, Oldfield EH, Park DM, Dietrich J, Han R, Noble M, Yang MY, Liu X, Madhankumar AB, Sheehan J, Slagle-Webb B, Connor JR, Fu J, Shen RJ, Colman H, Lang FF, Alfred Yung WK, Koul D, Kaluzova M, Machaidze R, Nduom ENK, Burden CT, Hadjipanayis CG, Lei L, Sonabend A, Guarnieri P, Ludwig T, Rosenfeld S, Bruce J, Canoll P, Vaillant BD, Bhat K, Balasubramaniyam V, Wang S, Gumin J, Sulman E, Lang F, Aldape K, Colman H, Sulman EP, Ezhilarasan R, Goodman LD, Love PN, George A, Aldape K, Soules M, Zhu T, Flack C, Talsma C, Hamm L, Muraszko K, Fan X, Aoyagi M, Matsuoka Y, Tamura K, Ando N, Kawano Y, Ohno K, Kobayashi D, Kumagai J, Frank RT, Najbauer J, Aboody KS, Aboody KS, Najbauer J, Metz M, Garcia E, Aramburo S, Valenzuela V, Gutova M, Annala AJ, Barish M, Danks M, Kim SU, Portnow J, Hofstetter C, Gursel D, Mubita L, Holland E, Boockvar J, Monje M, Freret M, Masek M, Edwards MS, Fisher PG, Vogel H, Beachy P. Stem Cells. Neuro Oncol 2010. [DOI: 10.1093/neuonc/noq116.s18] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Chiba T, Kawachi H, Kawano T, Kumagai J, Kitagaki K, Sekine M, Uchida K, Kobayashi M, Sugihara K, Eishi Y. Independent histological risk factors for lymph node metastasis of superficial esophageal squamous cell carcinoma; implication of claudin-5 immunohistochemistry for expanding the indications of endoscopic resection. Dis Esophagus 2010; 23:398-407. [PMID: 19903192 DOI: 10.1111/j.1442-2050.2009.01023.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Endoscopic resection is curative for superficial esophageal squamous cell carcinoma (ESCC) limited to the lamina propria. Endoscopic resection is not recommended for superficial ESCC invading muscularis mucosa or submucosa, however, because of the high frequency of lymph node metastasis (LNM) in such patients. Methods to more accurately predict LNM by analysis of endoscopically resected specimens are needed. Patients with superficial ESCC who underwent surgery without prior chemoradiotherapy (n= 110) were retrospectively examined to determine whether LNM correlated with immunohistochemical parameters and conventional histological parameters, including depth of invasion and vascular permeation. Cancer cell expression of claudins-1, 5, and 7, E-cadherin, beta-catenin, and matrix metalloproteinase 7 was evaluated. Univariate analysis revealed that LNM correlated with claudin-5 expression, but not any other immunohistochemical parameter examined. Multivariate analysis revealed three independent risk factors for LNM: aberrant claudin-5 expression in cancer cells (odds ratio; OR [95% confidence interval]= 4.61[1.44-14.77]), depth of submucosal invasion greater than 200 microm (3.55 [1.02-13.17]), and positive lymphatic permeation (3.34 [1.22-9.15]). LNM was found in one of 29 (3.4%) patients with none of these three risk factors, and in 32 of 81 (39.5%) patients with one or more of these risk factors. In superficial ESCC, routine analysis of claudin-5 expression in cancer cells together with depth of invasion and lymphatic permeation may be useful for predicting LNM and thereby reducing the number of patients undergoing additional surgery after successful endoscopic resection.
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Affiliation(s)
- T Chiba
- Department of Human Pathology, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
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Shimizu Y, Inagaki M, Kumada T, Kumagai J. Negative and positive ion trapping by isotopic molecules in cryocrystals in case of solid parahydrogen containing electrons and H6+ radical cations. J Chem Phys 2010; 132:244503. [DOI: 10.1063/1.3432780] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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Murayama T, Inokuchi M, Takagi Y, Yamada H, Kojima K, Kumagai J, Kawano T, Sugihara K. Relation between outcomes and localisation of p-mTOR expression in gastric cancer. Br J Cancer 2009; 100:782-8. [PMID: 19223902 PMCID: PMC2653759 DOI: 10.1038/sj.bjc.6604915] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2008] [Revised: 01/08/2009] [Accepted: 01/12/2009] [Indexed: 02/07/2023] Open
Abstract
The mammalian target of rapamycin (mTOR), a Ser/Thr protein kinase that mediates intracellular signalling related to cell growth, proliferation, and differentiation, has received considerable interest as a possible target for cancer treatment. We evaluated the correlation of mTOR expression with clinicopathological features, outcomes, and the expression of Akt, an upstream regulator of mTOR, in gastric cancer. Tumour samples were obtained from 109 patients with gastric adenocarcinomas who underwent a radical gastrectomy. The expressions of phosphorylated mTOR (p-mTOR) and phosphorylated Akt (p-Akt) in the cytoplasm and in the nucleus were analysed by immunohistochemical staining. Cytoplasmic p-mTOR expression positively correlated with the depth of tumour invasion (T1 vs T2-4, P=0.003), involved lymph nodes (P=0.010), and tumour stage (I vs II-IV, P=0.002). In contrast, nuclear p-mTOR expression negatively correlated with these variables (P<0.001,=0.035, and <0.001). Cytoplasmic p-mTOR expression was associated with significantly poorer relapse-free survival (RFS, P=0.037) and overall survival (OS, P=0.024), whereas nuclear p-mTOR expression was associated with better RFS and OS (P=0.029, 0.059). Neither cytoplasmic nor nuclear p-Akt expression was associated with any clinicopathological factor or with survival. Localisation of p-mTOR may play an important role in tumour progression and outcomes in patients with gastric cancer.
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Affiliation(s)
- T Murayama
- Department of Surgical Oncology, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - M Inokuchi
- Department of Surgical Oncology, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Y Takagi
- Department of Translational Oncology, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - H Yamada
- Department of Esophagogastric Surgery, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - K Kojima
- Department of Esophagogastric Surgery, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - J Kumagai
- Department of Human Pathology, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - T Kawano
- Department of Esophagogastric Surgery, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - K Sugihara
- Department of Surgical Oncology, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo, Tokyo 113-8519, Japan
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Shimizu Y, Kumada T, Kumagai J. Electron spin resonance spectroscopy of molecules in large precessional motion: a case of H6(+) and H4D2(+) in solid parahydrogen. J Magn Reson 2008; 194:76-80. [PMID: 18567518 DOI: 10.1016/j.jmr.2008.05.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2008] [Revised: 05/28/2008] [Accepted: 05/28/2008] [Indexed: 05/26/2023]
Abstract
We have measured electron spin resonance (ESR) spectra of H6+ and H4D2(+) ions produced in gamma-ray irradiated solid parahydrogen. Anisotropic hyperfine-coupling constants for H6(+) and H4D2(+) determined by the analysis of ESR lines at 4.2K were -0.06 and -0.12 mT, respectively, which were opposite in sign to and much smaller than theoretical results of 1.17-1.25 mT. Although no change was observed in H6(+), the constant for H4D2(+) increased to be 1.17 mT at 1.7 K, which is very close to the theoretical value. We concluded that H6+ both at 4.2 and 1.7 K and H4D2(+) at 4.2K should be in a large precessional motion with the angle of 57-59 degrees, but the precession of H4D2(+) is stopped at 1.7 K.
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Affiliation(s)
- Yuta Shimizu
- Department of Applied Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
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Kurosaki Y, Shimizu Y, Kumagai J. Isotope effects on the spin-density distribution in the H6+ clusters: Direct ab initio molecular dynamics study. Chem Phys Lett 2008. [DOI: 10.1016/j.cplett.2008.02.072] [Citation(s) in RCA: 3] [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: 11/16/2022]
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Watanabe H, Kumagai J, Tsurugi H, Satoh T, Miura M. Synthesis of Alkylated Benzo[2,1-b:3,4-b′]dithiophenes by Annulative Coupling and Their Direct Arylation under Palladium Catalysis. CHEM LETT 2007. [DOI: 10.1246/cl.2007.1336] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [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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Furuta T, Sugimoto M, Shirai N, Matsushita F, Nakajima H, Kumagai J, Senoo K, Kodaira C, Nishino M, Yamade M, Ikuma M, Watanabe H, Umemura K, Ishizaki T, Hishida A. Effect of MDR1 C3435T polymorphism on cure rates of Helicobacter pylori infection by triple therapy with lansoprazole, amoxicillin and clarithromycin in relation to CYP 2C19 genotypes and 23S rRNA genotypes of H. pylori. Aliment Pharmacol Ther 2007; 26:693-703. [PMID: 17697203 DOI: 10.1111/j.1365-2036.2007.03408.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Polymorphism in MDR1 is associated with variation in the plasma level of a proton pump inhibitor. AIM To investigate whether MDR1 polymorphism is associated with eradication rates of Helicobacter pylori by a triple therapy with lansoprazole, amoxicillin and clarithromycin in relation to CYP2C19 genotype status and bacterial susceptibility to clarithromycin. METHODS A total of 313 patients infected with H. pylori completed the treatment with lansoprazole 30 mg b.d., clarithromycin 200 mg b.d. and amoxicillin 750 mg b.d. for 1 week. MDR1 C3435T polymorphism and CYP2C19 genotypes of patients and sensitivity of H. pylori to clarithromycin were determined. RESULTS Logistic regression analysis revealed that the MDR1 polymorphism as well as CYP2C19 genotypes of patients and clarithromycin-resistance of H. pylori were significantly associated with successful eradication. Eradication rates for H. pylori were 82% (83/101: 95% CI = 73-89), 81% (112/139: CI = 73-87), and 67% (44/73: CI = 48-72) in patients with the MDR1 3435 C/C, C/T and T/T genotype, respectively (P = 0.001). CONCLUSIONS Polymorphism of MDR1 is one of the determinants of successful eradication of H. pylori by the triple therapy with lansoprazole, amoxicillin and clarithromycin, together with CYP2C19 genotype and bacterial susceptibility to clarithromycin.
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Affiliation(s)
- T Furuta
- Center for Clinical Research, Hamamatsu University School of Medicine, Hamamatsu, Japan.
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Furuta T, Sugimoto M, Shirai N, Matsushita F, Nakajima H, Kumagai J, Senoo K, Kodaira C, Nishino M, Yamade M, Ikuma M, Watanabe H, Umemura K, Ishizaki T, Hishida A. Effect of MDR1 C3435T polymorphism on cure rates of Helicobacter pylori infection by triple therapy with lansoprazole, amoxicillin and clarithromycin in relation to CYP 2C19 genotypes and 23S rRNA genotypes of H. pylori. Aliment Pharmacol Ther 2007. [PMID: 17697203 DOI: 10.1111/j.1365-2036.2007.03408] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
BACKGROUND Polymorphism in MDR1 is associated with variation in the plasma level of a proton pump inhibitor. AIM To investigate whether MDR1 polymorphism is associated with eradication rates of Helicobacter pylori by a triple therapy with lansoprazole, amoxicillin and clarithromycin in relation to CYP2C19 genotype status and bacterial susceptibility to clarithromycin. METHODS A total of 313 patients infected with H. pylori completed the treatment with lansoprazole 30 mg b.d., clarithromycin 200 mg b.d. and amoxicillin 750 mg b.d. for 1 week. MDR1 C3435T polymorphism and CYP2C19 genotypes of patients and sensitivity of H. pylori to clarithromycin were determined. RESULTS Logistic regression analysis revealed that the MDR1 polymorphism as well as CYP2C19 genotypes of patients and clarithromycin-resistance of H. pylori were significantly associated with successful eradication. Eradication rates for H. pylori were 82% (83/101: 95% CI = 73-89), 81% (112/139: CI = 73-87), and 67% (44/73: CI = 48-72) in patients with the MDR1 3435 C/C, C/T and T/T genotype, respectively (P = 0.001). CONCLUSIONS Polymorphism of MDR1 is one of the determinants of successful eradication of H. pylori by the triple therapy with lansoprazole, amoxicillin and clarithromycin, together with CYP2C19 genotype and bacterial susceptibility to clarithromycin.
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Affiliation(s)
- T Furuta
- Center for Clinical Research, Hamamatsu University School of Medicine, Hamamatsu, Japan.
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Kumagai J, Inagaki H, Kariya S, Ushida T, Shimizu Y, Kumada T. Electron spin resonance study on H6+, H5D+, H4D2+, and H2D4+ in solid parahydrogen. J Chem Phys 2007; 127:024505. [PMID: 17640135 DOI: 10.1063/1.2748046] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We carried out an electron spin resonance (ESR) study on hydrogen ion radicals produced by radiolysis of solid para-H(2). In addition to quartet ESR lines proposed to be H(2) (+)-core H(6) (+) (D(2d)) ions in solid para-H(2) [T. Kumada et al., Phys. Chem. Chem. Phys. 7, 776 (2005)], we newly observed totally more than 50 resolved lines in gamma-ray irradiated solid para-H(2)-ortho-D(2) (1 mol %) and para-H(2)-HD (1 mol %) mixtures. We assigned these lines to be isotope substituents of H(2) (+)-core H(6) (+) ions such as H(5)D(+), H(4)D(2) (+), and H(2)D(4) (+) throughout the comparison of their ESR parameters with theoretical results. These results provide a conclusive evidence that H(2) (+)-core H(6) (+) ions are generated in irradiated solid hydrogens. Analysis of the EPR spectrum and ab initio calculations predicts D(2d) symmetry of the H(6) (+) ions, whereas a lowering symmetry (D(2d)-->C(2v)) induced by asymmetric nuclear wave function is observed in H(5)D(+) and H(4)D(2) (+). We also observed isotope-substitution reactions such as H(6) (+)+D(2)-->H(4)D(2) (+)+H(2) and H(6) (+)+HD-->H(5)D(+)+H(2), which are analogous to the well-known isotope-condensation reactions of H(3) (+) in dark nebula, H(3) (+)+HD-->HD(2) (+)+H(2) and HD(2) (+)+HD-->D(3) (+)+H(2).
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Affiliation(s)
- Jun Kumagai
- Department of Applied Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
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Yabe Y, Hatori M, Kumagai J, Koizumi N, Sakuma T, Kawamura M. Heterotopic ossification of the distal portion of biceps femoris: case report and review of the literature. Ups J Med Sci 2006; 111:321-7. [PMID: 17578799 DOI: 10.3109/2000-1967-058] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Heterotopic ossification is the formation of mature lamellar bone in soft tissue. We report a very unusual case of heterotopic ossification arising in the distal portion of the biceps femoris muscle. A 29-year-old woman presented with knee pain after playing golf. She had had no apparent history of trauma. Radiography of the knee showed a calcified mass adjacent to the lateral side of her knee joint. The radiological diagnosis was calcification of the lateral collateral ligament. The pain soon disappeared without treatment. At the age of 45 years, she complained of a growing mass in her left knee that was occasionally painful. Computed tomography and magnetic resonance imaging demonstrated a well matured ossified mass in the lateral side of her left knee. Radiologically and macroscopically, it was found to be in continuity with the distal part of biceps femoris. The mass was excised en bloc. Microscopically, the lesion was mainly composed of well-matured lamellar bone with bone marrow and islands of cartilage showing enchondral ossification. No apparent zoning was found. Cellular atypia was not observed. Extraskeletal osteosarcoma was ruled out. The mass was diagnosed as a heterotopic ossification arising from the distal part of biceps femoris.
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Affiliation(s)
- Yutaka Yabe
- Department of Orthopaedic Surgery, Iwate Prefecture Central Hospital, Japan
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Abstract
A 45-year-old woman presented with one-year history of a mass on her chest. Computed tomography and magnetic resonance imaging demonstrated a tumour near the sternoclavicular joint. The tumour was diagnosed as osteolipoma histologically after resection. Osteolipoma is a rare tumour and this may be the first report of osteolipoma arising adjacent to the sternoclavicular joint.
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Affiliation(s)
- Yutaka Yabe
- Department of Orthopaedic Surgery, Iwate Prefecture Central Hospital, Japan
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Shimizu Y, Fukuda J, Sato W, Kumagai J, Hirano H, Tanaka T. First-trimester diagnosis of conjoined twins after in-vitro fertilization-embryo transfer (IVF-ET) at blastocyst stage. Ultrasound Obstet Gynecol 2004; 24:208-209. [PMID: 15287063 DOI: 10.1002/uog.1088] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
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Kumagai J, Hanabusa M, Inagaki H, Kariya S. Is the ESR spectrum attributable to H2–or H2+(H2)2? Precise measurement of the g-value and anisotropic hyperfine structure in γ-irradiated solid parahydrogen. Phys Chem Chem Phys 2004. [DOI: 10.1039/b402756f] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Kumagai J, Masui K, Itagaki Y, Shiotani M, Kodama S, Watanabe M, Miyazaki T. Long-lived mutagenic radicals induced in mammalian cells by ionizing radiation are mainly localized to proteins. Radiat Res 2003; 160:95-102. [PMID: 12816528 DOI: 10.1667/rr3015] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
We have provided evidence that long-lived radicals, produced by ionizing radiation, are highly mutagenic and transforming in mammalian cells. Long-lived radicals are scavenged effectively by vitamin C or by epigallocatechin-3-O-gallate (EGCG). Long-lived radicals are not involved in lethality or in the induction of chromosome aberrations. We now report the results of experiments that define the relative amounts of long-lived radicals in DNA and proteins and identify the major protein radicals as sulfinyl radicals (R-CH2-S-O*). To make these assignments, yields of long-lived radicals in gamma-irradiated salmon sperm DNA and albumin were compared by ESR. ESR spectra of long-lived radicals produced in irradiated Syrian hamster embryo (SHE) cells were analyzed precisely and compared with ESR parameters obtained by density functional theory calculations. Long-lived radicals yields of 99.8% were produced in proteins. We also identified a new type of long-lived radical as H-added phenylalanine radicals. While our evidence does not rule out the possibility of important biological consequences of the low-level long-lived radicals created by radiation, it implicates radicals in proteins as playing a key role in genetic effects of ionizing radiation. We suggest that these novel radicals, wherever they reside, need to be considered in explanations of biological sequela of radiation.
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Affiliation(s)
- Jun Kumagai
- Department of Applied Chemistry, Graduate School of Engineering, Nagoya University, Furo-Cho, Chikusa-ku, Nagoya 464-8603, Japan.
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Abstract
Leptin is known to regulate diverse reproductive functions, and recent studies have implicated involvement of leptin in the early mouse embryo development. The aim of the present study was to investigate the expression of leptin and its functional receptor (OB-Rb) in mouse oocyte and preimplantation embryo, and to examine whether leptin influenced the early embryo development. Leptin mRNA was detected in blastocyst and hatched blastocyst, and OB-Rb mRNA was detected in oocytes, 1-cell, 2-cell, morula, blastocyst and hatched blastocyst. As for the origin of leptin, leptin mRNA was identified in both the oviduct and uterus of the pregnant mouse. Furthermore, in the pregnant mouse, the levels of leptin in uterine fluid were higher than those in the non-pregnant mouse. Supplementation of culture medium with leptin promotes the development of preimplantation embryos from 2-cell stage to the blastocysts, fully expanded blastocysts and hatched blastocysts. Leptin significantly increased the total cell number of blastocysts, and the effect was preferentially observed in the trophectoderm. These findings raise the possibility that leptin regulates the development of mouse preimplantation embryo through a paracrine pathway.
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Affiliation(s)
- K Kawamura
- Department of Obstetrics and Gynecology, Akita University School of Medicine, Hondo 1-1-1, Akita 010-8543, Japan.
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Murata C, Yoshida H, Kumagai J, Hattori T. Active Sites and Active Oxygen Species for Photocatalytic Epoxidation of Propene by Molecular Oxygen over TiO2−SiO2 Binary Oxides. J Phys Chem B 2003. [DOI: 10.1021/jp0277006] [Citation(s) in RCA: 78] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chizu Murata
- Department of Applied Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - Hisao Yoshida
- Department of Applied Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - Jun Kumagai
- Department of Applied Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - Tadashi Hattori
- Department of Applied Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
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Koga F, Kawakami S, Kumagai J, Takizawa T, Ando N, Arai G, Kageyama Y, Kihara K. Impaired Delta Np63 expression associates with reduced beta-catenin and aggressive phenotypes of urothelial neoplasms. Br J Cancer 2003; 88:740-7. [PMID: 12618884 PMCID: PMC2376335 DOI: 10.1038/sj.bjc.6600764] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
p63, a homologue of the p53 gene, is considered to be essential for the normal development of stratified epithelia including urothelium. To examine possible roles of p63 in urothelial tumorigenesis, p63 expression was systematically examined in normal urothelium, low-grade papillary noninvasive (LPN) urothelial tumours, and high-grade or invasive carcinomas, using either an isoform-nonspecific or a Delta N-isoform-specific antibody. Expression profiles of p63 were also analysed in cultured cells. Immunoreactivity with the two antibodies was virtually identical in tissue samples examined. Basal and intermediate cell layers of normal urothelium showed intense nuclear p63 immunostaining. This normal staining pattern was preserved in a majority of LPN tumours, whereas it was frequently impaired in high-grade or muscle-invasive carcinomas. At the mRNA level, Delta Np63 expression predominated over TAp63, and amounts of Delta Np63 mRNA correlated with p63 immunoreactivity, confirming that Delta Np63 accounts for p63 expressed in urothelial tissues. In cultured cells, Delta Np63 was also expressed in low-grade tumour cells as well as normal urothelial cells, but undetectable in high-grade aggressive carcinoma cells. Interestingly, impaired Delta Np63 expression significantly associated with reduced beta-catenin expression that was possibly related to progression of urothelial neoplasms. Thus, impaired Delta Np63 expression characterises aggressive phenotypes of urothelial neoplasms.
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Affiliation(s)
- F Koga
- Department of Urology and Reproductive Medicine, Graduate School, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8519, Japan
| | - S Kawakami
- Department of Urology and Reproductive Medicine, Graduate School, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8519, Japan
- Department of Urology and Reproductive Medicine, Graduate School, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8519, Japan. E-mail:
| | - J Kumagai
- Department of Pathology, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8519, Japan
| | - T Takizawa
- Department of Pathology, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8519, Japan
| | - N Ando
- Department of Pathology, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8519, Japan
| | - G Arai
- Department of Urology and Reproductive Medicine, Graduate School, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8519, Japan
| | - Y Kageyama
- Department of Urology and Reproductive Medicine, Graduate School, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8519, Japan
| | - K Kihara
- Department of Urology and Reproductive Medicine, Graduate School, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8519, Japan
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Meneses-Garcia A, Kumagai J, Takizawa T, Koike M, Kawano T. Histopathological diagnosis of biopsy samples from early esophageal carcinoma. J Exp Clin Cancer Res 2002; 21:621-6. [PMID: 12636112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
Carcinoma of the esophagus is frequently diagnosed in advanced clinical stages. When an esophagic carcinoma has infiltrated the submucosa or the muscular or serosa, metastases are a common finding. Thus, early diagnosis and opportune treatment are vital for patients with this type of neoplasm. Timely diagnosis can be done through endoscopic or X-ray studies and confirmed through a histopathological study by directed biopsy. We presently report the case of a 65 year old man with precedents of achalasia who underwent an endoscopic study using the Lugol staining technique for suspected malignant lesion classified as 0-IIc. After two biopsies it was diagnosed as early carcinoma of the esophagus and was subjected to mucosectomy. Histopathological findings are reviewed at architectural and cellular level and are essential to establish the diagnosis of early neoplastic lesions of the esophagus epithelium. These cellular changes are corroborated by immunohistochemical studies with nuclear expression of p53. The relevant literature was reviewed and experiences by Japanese and North American pathologists compared with emphasis on the need for multidisciplinary management to make an early diagnosis by endoscopic studies, Lugol staining, X-rays, biopsy and conservative treatment based on mucosectomy.
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Affiliation(s)
- A Meneses-Garcia
- Subdirection of Pathology, Instituto Nacional de Cancerología, Tlalpan, México DF.
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Yorioka N, Ito T, Masaki T, Ogata S, Asakimori Y, Tanji C, Kyuden Y, Komiya Y, Kumagai J, Taniguchi Y, Kohno N. Dose-dependent effect of an oral adsorbent, AST-120, in patients with early chronic renal failure. J Int Med Res 2002; 30:467-75. [PMID: 12449515 DOI: 10.1177/147323000203000501] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
We evaluated the dose dependence of an oral adsorbent, AST-120, in 31 patients with early chronic renal failure (baseline serum creatinine: 1.2-3.0 mg/dl). Twenty-three patients were given AST-120 and eight patients were not. AST-120 was administered at three different maintenance doses, < 3.0 g, 3.0 g and 6.0 g/day, according to patients' ability to tolerate treatment. The treatment period was 12 months. The slope of the reciprocal of serum-creatinine concentration versus time was calculated to assess the progression of renal failure. This slope became significantly less steep after AST-120 treatment at 6.0 g/day, but did not change significantly at the other doses. These findings suggest that 6.0 g/day of AST-120 may delay the initiation of dialysis in patients with early chronic renal failure.
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Affiliation(s)
- N Yorioka
- Department of Molecular and Internal Medicine, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan.
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Miyazaki T, Fukuta H, Hanabusa M, Kumada T, Kumagai J. Suppression and enhancement of tunneling ion recombination of electron bubbles in solid para-hydrogen–ortho-hydrogen mixtures at 4.2 K: controlling factors of tunneling reaction. Chem Phys Lett 2002. [DOI: 10.1016/s0009-2614(02)00823-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Kumagai J, Yoshida H, Koizumi H, Ichikawa T. Electronic Structure of Oligosilane and Polysilane Radical Anions As Studied by Electron Spin Resonance and Electronic Absorption Spectroscopy. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100101a005] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Kumagai J, Yoshida H, Ichikawa T. Electronic Structure of Oligosilane and Polysilane Radical Cations as Studied by Electron Spin Resonance and Electronic Absorption Spectroscopy. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100020a019] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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50
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Nagasawa M, Itoh S, Tomizawa D, Kajiwara M, Sugimoto T, Kumagai J. Invasive subglottal aspergillosis in a patient with severe aplastic anemia: a case report. J Infect 2002; 44:198-201. [PMID: 12099752 DOI: 10.1053/jinf.2001.0935] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A 19-year-old female with aplastic anemia who developed subglottal aspergillosis is reported. She presented with fever, cough and stridor. Inspiratory dyspnea progressed rapidly and emergent tracheostomy was performed, which confirmed the diagnosis. In spite of intensive anti-fungal treatment combined with adoptive immunotherapy, Aspergillus infection expanded and she died of pulmonary aspergillosis. Autopsy revealed the fungal mass obstructing the trachea and disseminated pulmonary aspergillosis. Difficulties in diagnosis and management of subglottal Aspergillus infection are discussed.
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