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Hayashi R, Takao S, Komasa S, Sekino T, Kusumoto T, Maekawa K. Effects of Argon Gas Plasma Treatment on Biocompatibility of Nanostructured Titanium. Int J Mol Sci 2023; 25:149. [PMID: 38203320 PMCID: PMC10779263 DOI: 10.3390/ijms25010149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 12/12/2023] [Accepted: 12/13/2023] [Indexed: 01/12/2024] Open
Abstract
In this study, we applied argon plasma treatment to titanium surfaces with nanostructures deposited by concentrated alkali treatment and investigated the effects on the surface of the material and the tissue surrounding an implant site. The results showed that the treatment with argon plasma removed carbon contaminants and increased the surface energy of the material while the nanoscale network structure deposited on the titanium surface remained in place. Reactive oxygen species reduced the oxidative stress of bone marrow cells on the treated titanium surface, creating a favorable environment for cell proliferation. Good results were observed in vitro evaluations using rat bone marrow cells. The group treated with argon plasma exhibited the highest apatite formation in experiments using simulated body fluids. The results of in vivo evaluation using rat femurs revealed that the treatment improved the amount of new bone formation around an implant. Thus, the results demonstrate that argon plasma treatment enhances the ability of nanostructured titanium surfaces to induce hard tissue differentiation and supports new bone formation around an implant site.
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Affiliation(s)
- Rina Hayashi
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata 573-1121, Osaka, Japan; (R.H.); (S.T.); (K.M.)
| | - Seiji Takao
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata 573-1121, Osaka, Japan; (R.H.); (S.T.); (K.M.)
| | - Satoshi Komasa
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata 573-1121, Osaka, Japan; (R.H.); (S.T.); (K.M.)
| | - Tohru Sekino
- Department of Advanced Hard Materials, SANKEN (The Institute of Scientific and Industrial Research), Osaka University, 8-1 Mihogaoka, Ibaraki 567-0047, Osaka, Japan;
| | - Tetsuji Kusumoto
- Department of Oral Health Engineering, Faculty of Health Sciences, Osaka Dental University, 1-4-4, Makino-honmachi, Hirakata 573-1121, Osaka, Japan;
| | - Kenji Maekawa
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata 573-1121, Osaka, Japan; (R.H.); (S.T.); (K.M.)
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Kosumi D, Kusumoto T, Hashimoto H. Unique ultrafast excited states dynamics of artificial short-polyene carotenoid analog 2-(all-trans-β-ionylideneetinylidene)-indan-1,3-dione. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2021.113424] [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: 11/24/2022]
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Komasa S, Kusumoto T, Hayashi R, Takao S, Li M, Yan S, Zeng Y, Yang Y, Hu H, Kobayashi Y, Agariguchi A, Nishida H, Hashimoto Y, Okazaki J. Effect of Argon-Based Atmospheric Pressure Plasma Treatment on Hard Tissue Formation on Titanium Surface. Int J Mol Sci 2021; 22:ijms22147617. [PMID: 34299241 PMCID: PMC8307890 DOI: 10.3390/ijms22147617] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 07/08/2021] [Accepted: 07/13/2021] [Indexed: 01/07/2023] Open
Abstract
In this paper, we suggest that the atmospheric pressure plasma treatment of pure titanium metal may be useful for improving the ability of rat bone marrow cells (RBMCs) to induce hard tissue differentiation. Previous studies have reported that the use of argon gas induces a higher degree of hard tissue formation. Therefore, this study compares the effects of plasma treatment with argon gas on the initial adhesion ability and hard tissue differentiation-inducing ability of RBMCs. A commercially available titanium metal plate was used as the experimental material. A plate polished using water-resistant abrasive paper #1500 was used as the control, and a plate irradiated with argon mixed with atmospheric pressure plasma was used as the experimental plate. No structural change was observed on the surface of the titanium metal plate in the scanning electron microscopy results, and no change in the surface roughness was observed via scanning probe microscopy. X-ray photoelectron spectroscopy showed a decrease in the carbon peak and the formation of hydroxide in the experimental group. In the distilled water drop test, a significant decrease in the contact angle was observed for the experimental group, and the results indicated superhydrophilicity. Furthermore, the bovine serum albumin adsorption, initial adhesion of RBMCs, alkaline phosphatase activity, calcium deposition, and genetic marker expression of rat bone marrow cells were higher in the experimental group than those in the control group at all time points. Rat distal femur model are used as in vivo model. Additionally, microcomputed tomography analysis showed significantly higher results for the experimental group, indicating a large amount of the formed hard tissue. Histopathological evaluation also confirmed the presence of a prominent newly formed bone seen in the images of the experimental group. These results indicate that the atmospheric pressure plasma treatment with argon gas imparts superhydrophilicity, without changing the properties of the pure titanium plate surface. It was also clarified that it affects the initial adhesion of bone marrow cells and the induction of hard tissue differentiation.
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Affiliation(s)
- Satoshi Komasa
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (R.H.); (S.T.); (M.L.); (S.Y.); (Y.Z.); (Y.Y.); (H.H.); (A.A.); (J.O.)
- Correspondence: ; Tel.: +81-72-864-3084; Fax: +81-72-864-3184
| | - Tetsuji Kusumoto
- Department of Japan Faculty of Health Sciences, Osaka Dental University, 1-4-4, Makino-honmachi, Hirakata-shi, Osaka 573-1121, Japan;
| | - Rina Hayashi
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (R.H.); (S.T.); (M.L.); (S.Y.); (Y.Z.); (Y.Y.); (H.H.); (A.A.); (J.O.)
| | - Seiji Takao
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (R.H.); (S.T.); (M.L.); (S.Y.); (Y.Z.); (Y.Y.); (H.H.); (A.A.); (J.O.)
| | - Min Li
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (R.H.); (S.T.); (M.L.); (S.Y.); (Y.Z.); (Y.Y.); (H.H.); (A.A.); (J.O.)
| | - Sifan Yan
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (R.H.); (S.T.); (M.L.); (S.Y.); (Y.Z.); (Y.Y.); (H.H.); (A.A.); (J.O.)
| | - Yuhao Zeng
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (R.H.); (S.T.); (M.L.); (S.Y.); (Y.Z.); (Y.Y.); (H.H.); (A.A.); (J.O.)
| | - Yuanyuan Yang
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (R.H.); (S.T.); (M.L.); (S.Y.); (Y.Z.); (Y.Y.); (H.H.); (A.A.); (J.O.)
| | - Hui Hu
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (R.H.); (S.T.); (M.L.); (S.Y.); (Y.Z.); (Y.Y.); (H.H.); (A.A.); (J.O.)
| | - Yasuyuki Kobayashi
- Osaka Research Institute of Industrial Science and Technology, Morinomiya Center, 1-6-50, Morinomiya, Joto-ku, Osaka 536-8553, Japan;
| | - Akinori Agariguchi
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (R.H.); (S.T.); (M.L.); (S.Y.); (Y.Z.); (Y.Y.); (H.H.); (A.A.); (J.O.)
| | - Hisataka Nishida
- Department of Advanced Hard Materials, The Institute of Scientific and Industrial Research (ISIR), Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan;
| | - Yoshiya Hashimoto
- Department of Biomaterials, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan;
| | - Joji Okazaki
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (R.H.); (S.T.); (M.L.); (S.Y.); (Y.Z.); (Y.Y.); (H.H.); (A.A.); (J.O.)
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Oki E, Watanabe J, Sato T, Kagawa Y, Kuboki Y, Ikeda M, Ueno H, Kato T, Kusumoto T, Masuishi T, Yamaguchi K, Kanazawa A, Nishina T, Uetake H, Yamanaka T, Yoshino T. Impact of the 12-gene recurrence score assay on deciding adjuvant chemotherapy for stage II and IIIA/B colon cancer: the SUNRISE-DI study. ESMO Open 2021; 6:100146. [PMID: 33984677 PMCID: PMC8134704 DOI: 10.1016/j.esmoop.2021.100146] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 03/26/2021] [Accepted: 04/12/2021] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Recent advances in adjuvant chemotherapy for early colon cancer have widened physicians' recommendations on the regimen and duration (3 or 6 months) of the treatment. We conducted this prospective study to evaluate whether the 12-gene recurrence score (12-RS) assay affected physicians' recommendations on adjuvant treatment selection. PATIENTS AND METHODS Patients with stage IIIA/IIIB or stage II colon cancer were enrolled. After the patients discussed adjuvant treatment with their treating physicians, the physicians filled in the questionnaire before assay indicating the treatment recommendation. When the 12-RS assay results were available, the physicians again filled in the questionnaire after assay. The primary endpoint was the rate of change in treatment recommendations from before to after the assay, with a threshold rate of change being 20%. Patients with stage IIIA/B to II were enrolled in a ratio of 2 : 1. RESULTS Overall, the treatment recommendations changed in 40% of cases after obtaining 12-RS assay results. Recommendations were changed in 45% (80/178; 95% confidence interval, 37% to 53%; P < 0.001) and 30% (29/97; 95% confidence interval, 21% to 40%; P < 0.001) of patients with stage IIIA/B and II colon cancer, respectively. Patients with stage IIIA/B cancer had significantly more change than those with stage II cancer (P = 0.0148). From before to after the 12-RS assay, the percentage of patients whose physicians reported being confident in their treatment recommendations significantly increased from 54% to 81% in stage IIIA/B (P < 0.001) and from 65% to 83% in stage II (P < 0.001). CONCLUSION Our study confirmed the usefulness of the 12-RS assay in aiding the physician-patient decision-making process for tailoring adjuvant chemotherapy for stage IIIA/B colon cancer.
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Affiliation(s)
- E Oki
- Department of Surgery and Science, Kyushu University Graduate School of Medical Sciences, Fukuoka, Japan
| | - J Watanabe
- Department of Surgery, Gastroenterological Center, Yokohama City University Medical Center, Yokohama, Japan
| | - T Sato
- Department of Colorectal Surgery, Kitasato University Hospital, Kanagawa, Japan
| | - Y Kagawa
- Department of Surgery, Kansai Rosa Hospital, Hyogo, Japan
| | - Y Kuboki
- Department of Gastroenterology and Gastrointestinal Oncology, National Cancer Center Hospital East, Chiba, Japan
| | - M Ikeda
- Department of Surgery, Hyogo College of Medicine, Hyogo, Japan
| | - H Ueno
- Department of Surgery, National Defense Medical College, Saitama, Japan
| | - T Kato
- Department of Surgery, NHO Osaka National Hospital, Osaka, Japan
| | - T Kusumoto
- Department of Gastroenterological Surgery, NHO National Kyushu Medical Center, Fukuoka, Japan
| | - T Masuishi
- Department of Clinical Oncology, Aichi Cancer Center Hospital, Aichi, Japan
| | - K Yamaguchi
- Department of Gastroenterological Chemotherapy, Cancer Institute Hospital of the Japanese Foundation for Cancer Research, Tokyo, Japan
| | - A Kanazawa
- Department of Gastroenterological Surgery, Shimane Prefectural Central Hospital, Shimane, Japan
| | - T Nishina
- Department of Gastrointestinal Medical Oncology, NHO Shikoku Cancer Center, Ehime, Japan
| | - H Uetake
- Department of Specialized Surgeries, Tokyo Medical and Dental University, Tokyo, Japan
| | - T Yamanaka
- Department of Biostatistics, Yokohama City University School of Medicine, Yokohama, Japan.
| | - T Yoshino
- Department of Gastroenterology and Gastrointestinal Oncology, National Cancer Center Hospital East, Chiba, Japan
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Inozemtsev K, Kodaira S, Kusumoto T, Kitamura H, Strádi A, Szabó J, Ambrožová I, Shurshakov V. Etched track detector methods for the identification of target nuclear fragments in cosmic radiation and accelerator proton beams. RADIAT MEAS 2021. [DOI: 10.1016/j.radmeas.2020.106505] [Citation(s) in RCA: 2] [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: 11/30/2022]
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Takao S, Komasa S, Agariguchi A, Kusumoto T, Pezzotti G, Okazaki J. Effects of Plasma Treatment on the Bioactivity of Alkali-Treated Ceria-Stabilised Zirconia/Alumina Nanocomposite (NANOZR). Int J Mol Sci 2020; 21:E7476. [PMID: 33050494 PMCID: PMC7589822 DOI: 10.3390/ijms21207476] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 09/27/2020] [Accepted: 10/06/2020] [Indexed: 11/16/2022] Open
Abstract
Zirconia ceramics such as ceria-stabilized zirconia/alumina nanocomposites (nano-ZR) are applied as implant materials due to their excellent mechanical properties. However, surface treatment is required to obtain sufficient biocompatibility. In the present study, we explored the material surface functionalization and assessed the initial adhesion of rat bone marrow mesenchymal stem cells, their osteogenic differentiation, and production of hard tissue, on plasma-treated alkali-modified nano-ZR. Superhydrophilicity was observed on the plasma-treated surface of alkali-treated nano-ZR along with hydroxide formation and reduced surface carbon. A decreased contact angle was also observed as nano-ZR attained an appropriate wettability index. Treated samples showed higher in vitro bovine serum albumin (BSA) adsorption, initial adhesion of bone marrow and endothelial vascular cells, high alkaline phosphatase activity, and increased expression of bone differentiation-related factors. Furthermore, the in vivo performance of treated nano-ZR was evaluated by implantation in the femur of male Sprague-Dawley rats. The results showed that the amount of bone formed after the plasma treatment of alkali-modified nano-ZR was higher than that of untreated nano-ZR. Thus, induction of superhydrophilicity in nano-ZR via atmospheric pressure plasma treatment affects bone marrow and vascular cell adhesion and promotes bone formation without altering other surface properties.
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Affiliation(s)
- Seiji Takao
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (S.T.); (A.A.); (J.O.)
| | - Satoshi Komasa
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (S.T.); (A.A.); (J.O.)
| | - Akinori Agariguchi
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (S.T.); (A.A.); (J.O.)
| | - Tetsuji Kusumoto
- Department of Japan Faculty of Health Sciences, Osaka Dental University, 1-4-4, Makino-honmachi, Hirakata-shi, Osaka 573-1121, Japan;
| | - Giuseppe Pezzotti
- Ceramic Physics Laboratory and Research Institute for Nanoscience, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, Kyoto 606-8585, Japan;
| | - Joji Okazaki
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (S.T.); (A.A.); (J.O.)
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Komasa S, Takao S, Yang Y, Zeng Y, Li M, Yan S, Zhang H, Komasa C, Kobayashi Y, Nishizaki H, Nishida H, Kusumoto T, Okazaki J. Effects of UV Treatment on Ceria-Stabilized Zirconia/Alumina Nanocomposite (NANOZR). Materials (Basel) 2020; 13:ma13122772. [PMID: 32570895 PMCID: PMC7345710 DOI: 10.3390/ma13122772] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 06/08/2020] [Accepted: 06/15/2020] [Indexed: 12/12/2022]
Abstract
Nanostructured zirconia/alumina composite (NANOZR) has been explored as a suitable material for fabricating implants for patients with metal allergy. In this study, we examined the effect of UV treatment on the NANOZR surface. The experimental group was UV-treated NANOZR and the control group was untreated NANOZR. Observation of the surface of the UV-treated materials revealed no mechanical or structural change; however, the carbon content on the material surface was reduced, and the material surface displayed superhydrophilicity. Further, the effects of the UV-induced superhydrophilic properties of NANOZR plates on the adhesion behavior of various cells were investigated. Treatment of the NANOZR surface was found to facilitate protein adsorption onto it. An in vitro evaluation using rat bone marrow cells, human vascular endothelial cells, and rat periodontal ligament cells revealed high levels of adhesion in the experimental group. In addition, it was clarified that the NANOZR surface forms active oxygen and suppresses the generation of oxidative stress. Overall, the study results suggested that UV-treated NANOZR is useful as a new ceramic implant material.
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Affiliation(s)
- Satoshi Komasa
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (S.K.); (S.T.); (Y.Y.); (Y.Z.); (M.L.); (S.Y.); (H.Z.); (C.K.)
| | - Seiji Takao
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (S.K.); (S.T.); (Y.Y.); (Y.Z.); (M.L.); (S.Y.); (H.Z.); (C.K.)
| | - Yuanyuan Yang
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (S.K.); (S.T.); (Y.Y.); (Y.Z.); (M.L.); (S.Y.); (H.Z.); (C.K.)
| | - Yuhao Zeng
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (S.K.); (S.T.); (Y.Y.); (Y.Z.); (M.L.); (S.Y.); (H.Z.); (C.K.)
| | - Min Li
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (S.K.); (S.T.); (Y.Y.); (Y.Z.); (M.L.); (S.Y.); (H.Z.); (C.K.)
| | - Sifan Yan
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (S.K.); (S.T.); (Y.Y.); (Y.Z.); (M.L.); (S.Y.); (H.Z.); (C.K.)
| | - Honghao Zhang
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (S.K.); (S.T.); (Y.Y.); (Y.Z.); (M.L.); (S.Y.); (H.Z.); (C.K.)
| | - Chisato Komasa
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (S.K.); (S.T.); (Y.Y.); (Y.Z.); (M.L.); (S.Y.); (H.Z.); (C.K.)
| | - Yasuyuki Kobayashi
- Osaka Research Institute of Industrial Science and Technology, Morinomiya Center, 1-6-50, Morinomiya, Joto-ku, Osaka 536-8553, Japan;
| | - Hiroshi Nishizaki
- Department of Japan, Faculty of Health Sciences, Osaka Dental University, 1-4-4, Makino-honmachi, Hirakata-shi, Osaka 573-1121, Japan; (H.N.); (T.K.)
| | - Hisataka Nishida
- Department of Advanced Hard Materials, The Institute of Scientific and Industrial Research (ISIR), Osaka University, Osaka 567-0047, Japan;
| | - Tetsuji Kusumoto
- Department of Japan, Faculty of Health Sciences, Osaka Dental University, 1-4-4, Makino-honmachi, Hirakata-shi, Osaka 573-1121, Japan; (H.N.); (T.K.)
| | - Joji Okazaki
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (S.K.); (S.T.); (Y.Y.); (Y.Z.); (M.L.); (S.Y.); (H.Z.); (C.K.)
- Correspondence: ; Tel.: +81-72-864-3084; Fax: +81-72-864-3184
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Yan S, Li M, Komasa S, Agariguchi A, Yang Y, Zeng Y, Takao S, Zhang H, Tashiro Y, Kusumoto T, Kobayashi Y, Chen L, Kashiwagi K, Matsumoto N, Okazaki J, Kawazoe T. Decontamination of Titanium Surface Using Different Methods: An In Vitro Study. Materials (Basel) 2020; 13:E2287. [PMID: 32429186 PMCID: PMC7287776 DOI: 10.3390/ma13102287] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 05/10/2020] [Accepted: 05/13/2020] [Indexed: 12/15/2022]
Abstract
Contamination of implants is inevitable during different steps of production as well as during the clinical use. We devised a new implant cleaning strategy to restore the bioactivities on dental implant surfaces. We evaluated the efficiency of the Finevo cleaning system, and Ultraviolet and Plasma treatments to decontaminate hydrocarbon-contaminated titanium disks. The surfaces of the contaminated titanium disks cleaned using the Finevo cleaning system were similar to those of the uncontaminated titanium disks in scanning electron microscopy and X-ray photoelectron spectroscopy analysis, but no obvious change in the roughness was observed in the scanning probe microscopy analysis. The rat bone marrow mesenchymal stem cells (rBMMSCs) cultured on the treated titanium disks attached to and covered the surfaces of disks cleaned with the Finevo cleaning system. The alkaline phosphatase activity, calcium deposition, and osteogenesis-related gene expression in rBMMSCs on disks cleaned using the Finevo cleaning system were higher compared to those in the ultraviolet and plasma treatments, displaying better cell functionality. Thus, the Finevo cleaning system can enhance the attachment, differentiation, and mineralization of rBMMSCs on treated titanium disk surfaces. This research provides a new strategy for cleaning the surface of contaminated titanium dental implants and for restoration of their biological functions.
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Affiliation(s)
- Sifan Yan
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (S.Y.); (M.L.); (S.K.); (A.A.); (Y.Y.); (Y.Z.); (S.T.); (H.Z.); (Y.T.)
| | - Min Li
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (S.Y.); (M.L.); (S.K.); (A.A.); (Y.Y.); (Y.Z.); (S.T.); (H.Z.); (Y.T.)
| | - Satoshi Komasa
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (S.Y.); (M.L.); (S.K.); (A.A.); (Y.Y.); (Y.Z.); (S.T.); (H.Z.); (Y.T.)
| | - Akinori Agariguchi
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (S.Y.); (M.L.); (S.K.); (A.A.); (Y.Y.); (Y.Z.); (S.T.); (H.Z.); (Y.T.)
| | - Yuanyuan Yang
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (S.Y.); (M.L.); (S.K.); (A.A.); (Y.Y.); (Y.Z.); (S.T.); (H.Z.); (Y.T.)
| | - Yuhao Zeng
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (S.Y.); (M.L.); (S.K.); (A.A.); (Y.Y.); (Y.Z.); (S.T.); (H.Z.); (Y.T.)
| | - Seiji Takao
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (S.Y.); (M.L.); (S.K.); (A.A.); (Y.Y.); (Y.Z.); (S.T.); (H.Z.); (Y.T.)
| | - Honghao Zhang
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (S.Y.); (M.L.); (S.K.); (A.A.); (Y.Y.); (Y.Z.); (S.T.); (H.Z.); (Y.T.)
| | - Yuichiro Tashiro
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (S.Y.); (M.L.); (S.K.); (A.A.); (Y.Y.); (Y.Z.); (S.T.); (H.Z.); (Y.T.)
| | - Tetsuji Kusumoto
- Department of Oral Health Engineering, Faculty of Health Sciences, Osaka Dental University, Osaka 573-1121, Japan;
| | - Yasuyuki Kobayashi
- Osaka Research Institute of Industrial Science and Technology Morinomiya Center, 1-6-50, Morinomiya, Joto-ku, Osaka-shi 536-8553, Japan;
| | - Liji Chen
- Department of Orthodntics, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (L.C.); (N.M.)
| | - Kosuke Kashiwagi
- Department of Fixed Prosthodontics, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (K.K.); (T.K.)
| | - Naoyuki Matsumoto
- Department of Orthodntics, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (L.C.); (N.M.)
| | - Joji Okazaki
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (S.Y.); (M.L.); (S.K.); (A.A.); (Y.Y.); (Y.Z.); (S.T.); (H.Z.); (Y.T.)
| | - Takayoshi Kawazoe
- Department of Fixed Prosthodontics, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan; (K.K.); (T.K.)
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9
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Watanabe J, Sato T, Kagawa Y, Oki E, Kuboki Y, Ikeda M, Ueno H, Kato T, Kusumoto T, Masuishi T, Yamaguchi K, Kanazawa A, Nishina T, Uetake H, Yamanaka T, Yoshino T. SUNRISE-DI study: decision impact of the 12-gene recurrence score (12-RS) assay on adjuvant chemotherapy recommendation for stage II and IIIA/B colon cancer. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz154.016] [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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10
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Komasa S, Nishizaki M, Zhang H, Takao S, Yin D, Terada C, Kobayashi Y, Kusumoto T, Yoshimine S, Nishizaki H, Okazaki J, Chen L. Osseointegration of Alkali-Modified NANOZR Implants: An In Vivo Study. Int J Mol Sci 2019; 20:ijms20040842. [PMID: 30781372 PMCID: PMC6413168 DOI: 10.3390/ijms20040842] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [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: 01/17/2019] [Revised: 02/07/2019] [Accepted: 02/12/2019] [Indexed: 11/24/2022] Open
Abstract
Ingredients and surface modification methods are being continually developed to improve osseointegration of dental implants and reduce healing times. In this study, we demonstrate in vitro that, by applying concentrated alkali treatment to NANOZR with strong bending strength and fracture toughness, a significant improvement in the bone differentiation of rat bone marrow cells can be achieved. We investigated the influence of materials modified with this treatment in vivo, on implanted surrounding tissues using polychrome sequential fluorescent labeling and micro-computer tomography scanning. NANOZR implant screws in the alkali-treated group and the untreated group were evaluated after implantation in the femur of Sprague–Dawley male rats, indicating that the amount of new bone in the alkali-modified NANOZR was higher than that of unmodified NANOZR. Alkali-modified NANOZR implants proved to be useful for the creation of new implant materials.
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Affiliation(s)
- Satoshi Komasa
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1, Kuzuhahanazono-cho, Hirakata-shi, Osaka 5731121, Japan.
| | - Mariko Nishizaki
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1, Kuzuhahanazono-cho, Hirakata-shi, Osaka 5731121, Japan.
| | - Honghao Zhang
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1, Kuzuhahanazono-cho, Hirakata-shi, Osaka 5731121, Japan.
| | - Seiji Takao
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1, Kuzuhahanazono-cho, Hirakata-shi, Osaka 5731121, Japan.
| | - Derong Yin
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1, Kuzuhahanazono-cho, Hirakata-shi, Osaka 5731121, Japan.
| | - Chisato Terada
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1, Kuzuhahanazono-cho, Hirakata-shi, Osaka 5731121, Japan.
| | - Yasuyuki Kobayashi
- Osaka Research Institute of Industrial Science and Technology Morinomiya Center, 1-6-50, Morinomiya, Joto-ku, Osaka-shi 5368553, Japan.
| | - Tetsuji Kusumoto
- Osaka Dental University Japan Faculty of Health Sciences, 1-4-4, Makino-honmachi, Hirakata-shi, Osaka 5731144, Japan.
| | - Shigeki Yoshimine
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1, Kuzuhahanazono-cho, Hirakata-shi, Osaka 5731121, Japan.
| | - Hiroshi Nishizaki
- Osaka Dental University Japan Faculty of Health Sciences, 1-4-4, Makino-honmachi, Hirakata-shi, Osaka 5731144, Japan.
| | - Joji Okazaki
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1, Kuzuhahanazono-cho, Hirakata-shi, Osaka 5731121, Japan.
| | - Luyuan Chen
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1, Kuzuhahanazono-cho, Hirakata-shi, Osaka 5731121, Japan.
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11
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Ishigami H, Omori T, Fukushima R, Imano M, Miwa H, Kobayashi D, Yabusaki H, Misawa K, Arigami T, Amagai K, Hirono Y, Hidemura A, Imamura K, Ogata K, Kusumoto T, Ueda S, Matsumura T, Yoshida S, Yamaguchi H, Kitayama J. Long-term normothermic intraperitoneal and systemic chemotherapy for gastric cancer with peritoneal metastasis: Results from clinical trials over a decade in Japan. Eur J Surg Oncol 2019. [DOI: 10.1016/j.ejso.2018.10.119] [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] Open
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12
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Kobayashi K, Iwatsuki M, Orita H, Hidaka S, Arigami T, Kusumoto T, Satake H, Oki E, Satoshi K, Tobimatsu K, Shimokawa M, Saeki H, Makiyama A, Kakeji Y, Natsugoe S, Baba H, Eguchi S, Maehara Y. Phase II study of S-1 and oxaliplatin as neo-adjuvant chemotherapy for locally advanced gastric and esophago-gastric cancer (KSCC1601). Ann Oncol 2018. [DOI: 10.1093/annonc/mdy282.054] [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: 11/14/2022] Open
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13
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Yuki S, Shinozaki K, Kashiwada T, Kusumoto T, Iwatsuki M, Satake H, Tokunaga S, Emi Y, Makiyama A, Kawamoto Y, Komatsu Y, Shimokawa M, Saeki H, Oki E, Baba H, Maehara Y. Updated analysis of a phase II study of SOX plus trastuzumab for the patients with HER2 positive advanced or recurrent gastric cancer: KSCC/HGCSG/CCOG/PerSeUS1501B. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy282.052] [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: 11/14/2022] Open
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14
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Kadowaki S, Ishigami H, Muro K, Yoshida S, Hirono Y, Tomita T, Yabusaki H, Kusumoto T, Ota M, Kodera Y, Tsuji Y, Hidemura A, Hachiya O, Oba K, Kitayama J. An exploratory study of intraperitoneal paclitaxel combined with mFOLFOX6 for peritoneal disseminated gastric cancer patients with inadequate oral intake. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy282.068] [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: 11/14/2022] Open
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15
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Ludwig N, Kusumoto T, Galindo C, Peaupardin P, Pin S, Renault JP, Muller D, Yamauchi T, Kodaira S, Barillon R, Raffy Q. Radiolysis of phenylalanine in solution with Bragg-Peak energy protons. RADIAT MEAS 2018. [DOI: 10.1016/j.radmeas.2018.07.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [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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16
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Terada C, Komasa S, Kusumoto T, Kawazoe T, Okazaki J. Effect of Amelogenin Coating of a Nano-Modified Titanium Surface on Bioactivity. Int J Mol Sci 2018; 19:E1274. [PMID: 29695118 PMCID: PMC5983616 DOI: 10.3390/ijms19051274] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 04/19/2018] [Accepted: 04/19/2018] [Indexed: 01/12/2023] Open
Abstract
The interactions between implants and host tissues depend on several factors. In particular, a growing body of evidence has demonstrated that the surface texture of an implant influences the response of the surrounding cells. The purpose of this study is to develop new implant materials aiming at the regeneration of periodontal tissues as well as hard tissues by coating nano-modified titanium with amelogenin, which is one of the main proteins contained in Emdogain®. We confirmed by quartz crystal microbalance evaluation that amelogenin is easy to adsorb onto the nano-modified titanium surface as a coating. Scanning electron microscopy, scanning probe microscopy, X-ray photoelectron spectroscopy, and Fourier-transform infrared spectroscopy analyses confirmed that amelogenin coated the nano-modified titanium surface following alkali-treatment. In vitro evaluation using rat bone marrow and periodontal ligament cells revealed that the initial adhesion of both cell types and the induction of hard tissue differentiation such as cementum were improved by amelogenin coating. Additionally, the formation of new bone in implanted surrounding tissues was observed in in vivo evaluation using rat femurs. Together, these results suggest that this material may serve as a new implant material with the potential to play a major role in the advancement of clinical dentistry.
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Affiliation(s)
- Chisato Terada
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1, Kuzuhahanazono-cho, Hirakata-shi, Osaka 573-1121, Japan.
| | - Satoshi Komasa
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1, Kuzuhahanazono-cho, Hirakata-shi, Osaka 573-1121, Japan.
| | - Tetsuji Kusumoto
- Osaka Dental University Japan Faculty of Health Sciences, 1-4-4, Makino-honmachi, Hirakata-shi, Osaka 573-1144, Japan.
| | - Takayoshi Kawazoe
- Osaka Dental University, 8-1, Kuzuhahanazono-cho, Hirakata-shi, Osaka 573-1121, Japan.
| | - Joji Okazaki
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1, Kuzuhahanazono-cho, Hirakata-shi, Osaka 573-1121, Japan.
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17
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Zhang H, Hatoko M, Yin D, Yang Y, Zeng Y, Komasa S, Kusumoto T, Nishizaki H, Shimizu H, Zhao W, Okazaki J. Antibacterial Activity and Biocompatibility of Nanoporous Titanium Doped with Silver Nanoparticles and Coated with N-Acetyl Cysteine. J HARD TISSUE BIOL 2018. [DOI: 10.2485/jhtb.27.351] [Citation(s) in RCA: 3] [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: 10/28/2022]
Affiliation(s)
- Honghao Zhang
- Department of Stomatology, Nanfang Hospital, Southern Medical University
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University
| | - Mai Hatoko
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University
| | - Derong Yin
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University
| | - Yuanyuan Yang
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University
| | - Yuhao Zeng
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University
| | - Satoshi Komasa
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University
| | - Tetsuji Kusumoto
- Department of Oral Health Engineering, Faculty of Health Science, Osaka Dental University
| | - Hiroshi Nishizaki
- Department of Oral Health Engineering, Faculty of Health Science, Osaka Dental University
| | | | - Wanghong Zhao
- Department of Stomatology, Nanfang Hospital, Southern Medical University
| | - Joji Okazaki
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University
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18
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Kusumoto T, Nishida T, Ida N, Nakamura K. Comparing the Surgical Outcomes of Hysterectomies for Endometrial Cancer by Robot-Assisted Surgeries vs. Conventional Laparoscopic Surgeries: A Japanese Single Institution Experience. J Minim Invasive Gynecol 2017. [DOI: 10.1016/j.jmig.2017.08.586] [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: 11/16/2022]
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19
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Oki E, Shimokawa M, Murata A, Takahashi T, Maeda K, Kusumoto T, Munemoto Y, Ando K, Nakanishi R, Sugiyama M, Nakashima Y, Saeki H, Saji S, Maehara Y. Effect of lateral lymph node dissection for lower rectal cancer: An ad hoc analysis of the ACTS-RC randomized clinical trial. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx393.027] [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] Open
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20
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Kusumoto T, Yin D, Zhang H, Chen L, Nishizaki H, Komasa Y, Okazaki J, Komasa S. Evaluation of the Osteointegration of a Novel Alkali-Treated Implant System In Vivo. J HARD TISSUE BIOL 2017. [DOI: 10.2485/jhtb.26.355] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Tetsuji Kusumoto
- Faculty of Health Sciences Department of Oral Health Engineering, Osaka Dental University
| | - Derong Yin
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University
| | - Honghao Zhang
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University
| | - Luyuan Chen
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University
| | - Hiroshi Nishizaki
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University
| | - Yutaka Komasa
- Faculty of Health Sciences Department of Oral Health Engineering, Osaka Dental University
| | - Joji Okazaki
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University
| | - Satoshi Komasa
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University
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21
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Ikeda M, Yamanaka T, Yamazaki K, Yamaguchi K, Muro K, Kusumoto T, Uetake H, Sato T, Kato T, Nishina T, Kanazawa A, Oki E, Chao C, Maddala T, Krishnakumar J, Akagi K, Ochiai A, Ohashi Y, Ohtsu A, Yoshino T. PD-012 Validation study of the 12-gene Recurrence Score (RS) in patients (pts) with stage II and III colon cancer (CC) without adjuvant chemotherapy; SUNRISE Study. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv234.11] [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: 11/12/2022] Open
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22
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Komasa S, Yingmin S, Taguchi Y, Yamawaki I, Tsutsumi Y, Kusumoto T, Nishizaki H, Miyake T, Umeda M, Tanaka M, Okazaki J. Bioactivity of Titanium Surface Nanostructures Following Chemical Processing and Heat Treatment. J HARD TISSUE BIOL 2015. [DOI: 10.2485/jhtb.24.257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Satoshi Komasa
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University
| | - Su Yingmin
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University
| | | | - Isao Yamawaki
- Department of Periodontology, Osaka Dental University
| | - Yoshifumi Tsutsumi
- Department of Fixed Prosthodontics and Occlusion, Osaka Dental University
| | - Tetsuji Kusumoto
- Department of Fixed Prosthodontics and Occlusion, Osaka Dental University
| | - Hiroshi Nishizaki
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University
| | - Tatsuro Miyake
- Department of Preventive and Community Dentistry, Osaka Dental University
| | - Makoto Umeda
- Department of Periodontology, Osaka Dental University
| | - Masahiro Tanaka
- Department of Fixed Prosthodontics and Occlusion, Osaka Dental University
| | - Joji Okazaki
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University
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23
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Nishiuchi M, Sakaki H, Maeda S, Sagisaka A, Pirozhkov AS, Pikuz T, Faenov A, Ogura K, Kanasaki M, Matsukawa K, Kusumoto T, Tao A, Fukami T, Esirkepov T, Koga J, Kiriyama H, Okada H, Shimomura T, Tanoue M, Nakai Y, Fukuda Y, Sakai S, Tamura J, Nishio K, Sako H, Kando M, Yamauchi T, Watanabe Y, Bulanov SV, Kondo K. Multi-charged heavy ion acceleration from the ultra-intense short pulse laser system interacting with the metal target. Rev Sci Instrum 2014; 85:02B904. [PMID: 24593609 DOI: 10.1063/1.4827111] [Citation(s) in RCA: 7] [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] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Experimental demonstration of multi-charged heavy ion acceleration from the interaction between the ultra-intense short pulse laser system and the metal target is presented. Al ions are accelerated up to 12 MeV/u (324 MeV total energy). To our knowledge, this is far the highest energy ever reported for the case of acceleration of the heavy ions produced by the <10 J laser energy of 200 TW class Ti:sapphire laser system. Adding to that, thanks to the extraordinary high intensity laser field of ∼10(21) W cm(-2), the accelerated ions are almost fully stripped, having high charge to mass ratio (Q/M).
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Affiliation(s)
- M Nishiuchi
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - H Sakaki
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - S Maeda
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - A Sagisaka
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - A S Pirozhkov
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - T Pikuz
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - A Faenov
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - K Ogura
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - M Kanasaki
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - K Matsukawa
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - T Kusumoto
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - A Tao
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - T Fukami
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - T Esirkepov
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - J Koga
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - H Kiriyama
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - H Okada
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - T Shimomura
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - M Tanoue
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - Y Nakai
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - Y Fukuda
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - S Sakai
- Japan Atomic Energy Agency, Tokai, Ibaragi, Japan
| | - J Tamura
- J-PARC Center, Tokai, Ibaragi, Japan
| | - K Nishio
- Japan Atomic Energy Agency, Tokai, Ibaragi, Japan
| | - H Sako
- Japan Atomic Energy Agency, Tokai, Ibaragi, Japan
| | - M Kando
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - T Yamauchi
- Graduate School of Maritime Science, Kobe University, 5-1-1 Fukaeminami-machi, Higashinada-ku, Kobe 658-0022, Japan
| | - Y Watanabe
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga, Fukuoka, Japan
| | - S V Bulanov
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
| | - K Kondo
- Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto, Japan
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24
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Kodama J, Fukushima C, Kusumoto T, Nakamura K, Seki N, Hongo A, Hiramatsu Y. Stage IB1 cervical cancer patients with an MRI-measured tumor size < or = 2 cm might be candidates for less-radical surgery. EUR J GYNAECOL ONCOL 2013; 34:39-41. [PMID: 23589998] [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: 06/02/2023]
Abstract
OBJECTIVES To examine the correlation between histopathology and magnetic resonance imaging (MRI) measured tumor size and define whether patients with Stage IB1 cervical cancer with an MRI-measured tumor size < or = 2 cm can be candidates for less-radical surgery. MATERIALS AND METHODS The authors retrospectively reviewed 200 patients with Stage IB1 cervical cancer who underwent radical hysterectomy (class III) and pelvic lymphadenectomy. The largest diameter of the tumor was determined by MRI in 52 consecutive cases. RESULTS Regarding risk factors for parametrial involvement, only tumor size and age are known before definitive surgery without conization. Multivariate analysis of these risk factors revealed that both tumor size and old age were independently associated with parametrial involvement. Eighty-eight patients had a tumor size < or = 2 cm and an age < or = 50 years, two of which (2.3%) had parametrial involvement. In 52 consecutive patients, a significant correlation between histopathology- and MRI-measured tumor size was found (r = 0.787). Twenty-three patients had an MRI-measured tumor size < or = 2 cm, none of which had parametrial involvement. CONCLUSIONS Patients with Stage IB1 cervical cancer lesions with a tumor size < or = 2 cm measured by MRI and age < or = 50 years can be treated with less-radical surgery.
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Affiliation(s)
- J Kodama
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan.
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Teicher B, Dupuis N, Kusumoto T, Liu M, Liu F, Menon K, Schwartz G, Frei E. Decreased tumor oxygenation after cyclophosphamide, reoxygenation and therapeutic enhancement with a perflubron emulsion carbogen breathing. Int J Oncol 2012; 3:197-203. [PMID: 21573348 DOI: 10.3892/ijo.3.2.197] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Oxygen profiles of the rat mammary 13672 carcinoma were determined using a pO2 histograph prior to treatment and 24 h and 48 h after i.p. administration of a single dose of cyclophosphamide (300 mg/kg). The tumors were severely hypoxic at 24 h post the administration of cyclophosphamide. There was little increase in oxygenation of the tumors at 48 h post therapy compared with 24 h post therapy indicating that reoxygenation after cyclophosphamide was occurring very slowly in this tumor. Carbogen breathing improved the oxygenation of the tumors under each of the conditions studied. Administration of the perflubron emulsion (8 ml/kg) produced little or no change in the oxygenation of the tumors under normal air breathing conditions. However, the addition of carbogen breathing to administration of the perflubron emulsion increased the oxygenation of the tumors to levels equal to or greater than carbogen breathing at the mean/median pO2's. Perhaps most significantly, administration of the perflubron emulsion with carbogen breathing increased the oxygenation of the most hypoxic regions of the tumors but carbogen breathing alone did not. The growth delay of the Lewis lung carcinoma increased with increasing dose.of the perflubron emulsion along with cyclophosphamide (3 x 150 mg/kg) and carbogen breathing (6 h). This combination treatment was most effective when the cyclophosphamide was prepared in the perflubron emulsion. The number of lung metastases decreased in a manner parallel with increased efficacy of the treatment toward the primary tumor.
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Affiliation(s)
- B Teicher
- JOINT CTR RADIAT THERAPY,BOSTON,MA 02115
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Liu J, Liu J, Liu Y, Xu Y, Zhao X, Qian J, Sun B, Xing C, Kanda R, Hamada C, Nakano T, Wakabayashi K, Io H, Horikoshi S, Tomino Y, Ishimatsu N, Miyamoto T, Morimoto H, Nakamata J, Baba R, Kanegae K, Serino R, Kabashima N, Otsuji Y, Doi Y, Tamura M, Nakamata J, Morimoto H, Baba R, Ishimatsu N, Miyamoto T, Kanegae K, Serino R, Kabashima N, Otsuji Y, Doi Y, Tamura M, Kusumoto T, Fukami K, Yamagishi SI, Ueda S, Kaida Y, Hazama T, Nakayama Y, Ando R, Obara N, Okuda S, Tamura M, Matsumoto M, Miyamoto T, Kanegae K, Furuno Y, Serino R, Kabashima N, Otsuji Y, Bang-Gee H, Mazzotta L, Rosati A, Carlini A, Henriques VT, Zangiacomi Martinez E, Divino-Filho JC, Pecoits-Filho R, Cardeal Da Costa JA, Henriques VT, Henriques VT, Gama Axelsson T, Lindholm B, Carrero JJ, Heimburger O, Stenvinkel P, Qureshi AR, Akazawa M, Uno T, Kanda E, Maeda Y, Aktsiali M, Aktsiali M, Antonopoulou S, Tsiolaki K, Bakirtzi N, Patrinou A, Georgopoulou M, Liaveri P, Afentakis N, Tsirpanlis G, Hasegawa T, Nishiwaki H, Hirose M, Komukai D, Tayama H, Koiwa F, Yoshimura A, Lui SL, Lui S, Yung S, Tang C, Ng F, Lo WK, Chan TM, Koo HM, Doh FM, Yoo DE, Oh HJ, Yoo TH, Choi KH, Kang SW, Han DS, Han SH, Fernandes N, Fernandes N, Bastos MG, Gianotti Franco MR, Chaoubah A, Gloria Lima MD, Pecoits-Filho R, Divino-Filho JC, Qureshi AR, Kang S, Do J, Cho K, Park J, Yoon K, Chen JB, Cheng BC, Chen TC, Su YJ, Wu CH, Park Y, Jeon J, Tsikeloudi M, Pateinakis P, Patsatsi K, Manou E, Sotiriadis D, Tsakiris D, Teixeira L, Rodrigues A, Carvalho MJ, Cabrita A, Mendonca D, Kang S, Do J, Park J, Cho K, Yoon K, Bruschi M, Candiano G, Santucci L, Luzio S, Cannavo R, Ghiggeri GM, Verrina E, Varadarajan Y, Raju B, Cho KH, Do J, Kang S, Park JW, Yoon KW, Kim TW, Kimmel M, Braun N, Latus J, Alscher MD, Struijk D, Van Esch S, Krediet RT, Fernandes N, Van den Beukel T, Hoekstra T, Tirapani L, De Andrade Bastos K, Pecoits-Filho R, Qureshi AR, Bastos M, Dekker F, Divino-Filho JC, Yasuhisa T, Kanai H, Harada K, Kawai Y, Sugiyama H, Ito Y, Tsuruya K, Yoshida H, Maruyama H, Goto S, Nakayama M, Nakamoto H, Morinaga H, Matsuo S, Makino H, DI Gioia MC, Gallar P, Laso N, Rodriguez I, Cobo G, Oliet A, Hynostroza J, Herrero JC, Mon C, Ortiz M, Vigil A, Tomo T, Portoles J, Uta S, Uta S, Tato AM, Lopez-Sanchez P, Rivera M, Rodriguez-Pena R, Del Peso G, Ortega M, Felipe C, Tsampikaki E, Aperis G, Kaikis A, Paliouras C, Karvouniaris N, Maragaki M, Alivanis P, Kortus-Gotze B, Hoferhusch T, Hoyer J, Martino F, Kaushik M, Rodighiero MP, Creapldi C, Ronco C, Lacquaniti A, Lacquaniti A, Donato V, Fazio MR, Lucisano S, Cernaro V, Lupica R, Buemi M, Aloisi C, Uno T, Akazawa M, Kanda E, Maeda Y, Bavbek Ruzgaresen N, Secilmis S, Yilmaz H, Akcay A, Duranay M, Akalin N, Akalin N, Altiparmak MR, Trabulus S, Yalin AS, Ataman R, Serdengecti K, Schneider K, Bator B, Niko B, Braun N, Peter F, Ulmer C, Joerg L, Martin K, Dagmar B, German O, Fabian R, Juergen D, Stephan S, Dominik A, Latus J, Latus J, Ulmer C, Fritz P, Rettenmaier B, Hirschburger S, Segerer S, Biegger D, Lang T, Ott G, Kimmel M, Alscher MD, Braun N, Habib M, Korte M, Hagen M, Dor F, Betjes M, Habib M, Hagen M, Korte M, Zietse R, Dor F, Betjes M, Latus J, Latus J, Ulmer C, Fritz P, Rettenmaier B, Biegger D, Lang T, Ott G, Scharpf C, Kimmel M, Alscher MD, Braun N, Habib M, Korte M, Zietse R, Betjes M, Chang TI, Shin DH, Oh HJ, Kang SW, Han DS, Yoo TH, Han SH, Choi HY, Lee YK, Kim BS, Han SH, Yoo TH, Park HC, Lee HY, Horimoto N, Tuji K, Kitamura S, Sugiyama H, Makino H, Isshiki R, Isshiki R, Iwagami M, Tsutsumi D, Mochida Y, Ishioka K, Oka M, Maesato K, Moriya H, Ohtake T, Hidaka S, Kobayashi S, Higuchi C, Tanihata Y, Ishii M, Sugimoto H, Sato N, Kyono A, Ogawa T, Nishimura H, Otsuka K, Cho KH, Do JY, Kang S, Park JW, Yoon KW, Kim TW, Du Halgouet C, Latifa A, Anne Sophie V, Emmanuel D, Christine R, Francois V, Grzelak T, Czyzewska-Majchrzak L, Kramkowska M, Witmanowski H, Czyzewska K, Janda K, Krzanowski M, Dumnicka P, Sulowicz W, Rroji M, Seferi S, Barbullushi M, Likaj E, Petrela E, Thereska N, Cabiddu G, Dessi E, Arceri A, Laura P, Manca E, Conti M, Cao R, Pani A, Liao CT, Vega Vega O, Mendoza de la Garza A, Correa-Rotter R, Ueda A, Nagai K, Morimoto M, Hirayama A, Owada S, Tonozuka Y, Saito C, Saito C, Yamagata K, Matsuda A, Tayama Y, Ogawa T, Iwanaga M, Noiri C, Hatano M, Kiba T, Kanozawa K, Katou H, Hasegawa H, Mitarai T, Ros-Ruiz S, Ros-Ruiz S, Fuentes-Sanchez L, Jironda-Gallegos C, Gutierrez-Vilches E, Garcia-Frias P, Hernandez-Marrero D, Kang S, Lee S, Cho K, Park J, Yoon K, Do J, Lai X, Chen W, Guo Z, Braide M, Cristina V, Popa SG, Maria M, Eugen M, Martino F, DI Loreto P, DI Loreto P, Ronco C, Rroji M, Seferi S, Barbullushi M, Petrela E, Spahia N, Likaj E, Thereska N, Sanchez Macias LO, Sanchez Macias LO, Lares Castellanos KI, Hernandez Pacheco JA, Vega Vega O, Correa Rotter R, Pedro Ventura A, Olivia S, Teixeira L, Joana V, Francisco F, Maria Joao C, Antonio C, Rodrigues AS, Atas N, Erten Y, Erten Y, Onec K, Inal S, Topal S, Akyel A, Celik B, Okyay GU, Tavil Y, Zeiler M, Monteburini T, Agostinelli RM, Marinelli R, Santarelli S, Erten Y, Erten Y, Inal S, Onec K, Atas N, Okyay GU, Yaylaci C, Sahin G, Tavil Y, Guz G, Sindel S, Pinho A, Cabrita A, Malho Guedes A, Fragoso A, Carreira H, Pinto I, Bernardo I, Leao P, Janda K, Janda K, Krzanowski M, Kusnierz-Cabala B, Dumnicka P, Krasniak A, Chowaniec E, Tabor-Ciepiela B, Sulowicz W, Turkmen K, Ozbek O, Kayrak M, Samur C, Guler I, Tonbul HZ, Rusai K, Herzog R, Kratochwill K, Kuster L, Aufricht C, Meier CM, Fliser D, Schilling MK, Klingele M, Fukasawa M, Fukasawa M, Takeda M, Kamiyama M, Song YR, Kim HJ, Kim SG, Kim JK, Noh JW, Lee YK, Yoon JW, Koo JR. Peritoneal dialysis. Nephrol Dial Transplant 2012. [DOI: 10.1093/ndt/gfs243] [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: 11/14/2022] Open
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Teki R, Kadaksham AJ, House M, Harris-Jones J, Ma A, Babu SV, Hariprasad A, Dumas P, Jenkins R, Provine J, Richmann A, Stowers J, Meyers S, Dietze U, Kusumoto T, Yatsui T, Ohtsu M, Goodwin F. Alternative smoothing techniques to mitigate EUV substrate defectivity. ACTA ACUST UNITED AC 2012. [DOI: 10.1117/12.916497] [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: 11/14/2022]
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Oki E, Sakaguchi Y, Ohgaki K, Saeki H, Chinen Y, Minami K, Sakamoto Y, Toh Y, Kusumoto T, Maehara Y. Feasibility of Delta-Shaped Anastomoses in Totally Laparoscopic Distal Gastrectomy. Eur Surg Res 2011; 47:205-10. [DOI: 10.1159/000332850] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2011] [Accepted: 08/15/2011] [Indexed: 12/13/2022]
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Oki E, Ando K, Saeki H, Ohga T, Kakeji Y, Tsujitani S, Kusumoto T, Maehara Y. Prognostic significance of mortalin expresion in gastric adenocarcinoma with wild-type p53. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e14662] [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: 11/20/2022] Open
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Kusumoto T, Oki E, Hiroshige S, Endo Y, Uchida H, Matsumoto T, Takeuchi H, Matsushima T, Emi Y, Matsuura H, Muto Y, Maehara Y. Efficacy and safety of consecutive chemotherapy treatments for elderly patients with advanced or recurrent gastric cancer. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e14586] [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: 11/20/2022] Open
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Kusumoto T, Emi Y, Kakeji Y, Akagi Y, Samura H, Baba H, Natsugoe S, Tokunaga S, Maehara Y. Analysis of oxaliplatin-induced sensory neurotoxicity (sNT) in patients receiving FIREFOX, alternating regimen of mFOLFOX-6 and FOLFIRI, with metastatic colorectal cancer (MCRC): Results from combined analysis of KSCC0501 and KSCC0701. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.4_suppl.492] [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: 11/20/2022] Open
Abstract
492 Background: The Kyushu Study Group of Clinical Cancer (KSCC) conducted two phase II trials (KSCC0501 and KSCC0701, Akagi et al. J Clin Oncol. 28:15s, 2010, UMIN ID: 000001342) to evaluate the efficacy and safety of first-line oxaliplatin-based chemotherapy for MCRC. This combined analysis was performed to compare the incidence of oxaliplatin-induced sNT between the two trials. Methods: Patients (pts) were accrued from 2005 to 2007 in KSCC0501 and from 2007 to 2008 in KSCC0701. Sixty pts received FOLFOX-4 in KSCC0501 and 47 pts received FIREFOX(4 cycles of mFOLFOX-6 alternating with 4 cycles of FOLFIRI) in KSCC0701. All pts were reviewed for efficacy and toxicity (NCI-CTCAEv3.0). Kaplan-Meier analysis was performed to assess the incidence of sNT. Results: The incidence of sNT was 71.4% with FOLFOX-4 and 36.2% with FIREFOX (Table). The ORR was 34.5% (95% CI F22.5-48.1%) for FOLFOX4 and 58.7% (43.9-73.5%) for FIREFOX. Median PFS was 7.0 M (5.1-9.8 M) with FOLFOX-4 and 10.3 M (7.5-11.9 M) with FIREFOX. MST and 2-year survival were respectively 31.5 M (18.1-40.1 M) and 58.0% for FOLFOX4, versus not determined and 57.1% for FIREFOX. The median no. of treatment cycles was 9 for FOLFOX-4 and 12 for FIREFOX. After 4, 8, and 12 cumulative treatment cycles, the incidence of grade 2+sNT was respectively 24.0%, 30.7%, and 60.5% with FOLFOX-4 versus 6.5%, 6.5%, and 16.0% with FIREFOX. Conclusions: As first-line oxaliplatin-based chemotherapy for MCRC, FIREFOX caused less oxaliplatin-induced sNT and prolonged the duration of treatment. We have now finished enrollment for study KSCC 0801 (KSCC 0701+bevacizumab) and are following the pts. [Table: see text] [Table: see text]
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Affiliation(s)
- T. Kusumoto
- Institute of Clinical Research, National Beppu Medical Center, Beppu, Japan; Department of Surgery and Science, Kyushu University, Fukuoka, Japan; Department of Surgery, Kurume University School of Medicine, Kurume, Japan; Department of Surgery, Ryukyu University, Nakagami-Gun, Japan; Kumamoto University, Kumamoto, Japan; Kagoshima University Graduate School, Kagoshima, Japan; Department of Medical Informatics, Kyushu University Hospital, Fukuoka, Japan
| | - Y. Emi
- Institute of Clinical Research, National Beppu Medical Center, Beppu, Japan; Department of Surgery and Science, Kyushu University, Fukuoka, Japan; Department of Surgery, Kurume University School of Medicine, Kurume, Japan; Department of Surgery, Ryukyu University, Nakagami-Gun, Japan; Kumamoto University, Kumamoto, Japan; Kagoshima University Graduate School, Kagoshima, Japan; Department of Medical Informatics, Kyushu University Hospital, Fukuoka, Japan
| | - Y. Kakeji
- Institute of Clinical Research, National Beppu Medical Center, Beppu, Japan; Department of Surgery and Science, Kyushu University, Fukuoka, Japan; Department of Surgery, Kurume University School of Medicine, Kurume, Japan; Department of Surgery, Ryukyu University, Nakagami-Gun, Japan; Kumamoto University, Kumamoto, Japan; Kagoshima University Graduate School, Kagoshima, Japan; Department of Medical Informatics, Kyushu University Hospital, Fukuoka, Japan
| | - Y. Akagi
- Institute of Clinical Research, National Beppu Medical Center, Beppu, Japan; Department of Surgery and Science, Kyushu University, Fukuoka, Japan; Department of Surgery, Kurume University School of Medicine, Kurume, Japan; Department of Surgery, Ryukyu University, Nakagami-Gun, Japan; Kumamoto University, Kumamoto, Japan; Kagoshima University Graduate School, Kagoshima, Japan; Department of Medical Informatics, Kyushu University Hospital, Fukuoka, Japan
| | - H. Samura
- Institute of Clinical Research, National Beppu Medical Center, Beppu, Japan; Department of Surgery and Science, Kyushu University, Fukuoka, Japan; Department of Surgery, Kurume University School of Medicine, Kurume, Japan; Department of Surgery, Ryukyu University, Nakagami-Gun, Japan; Kumamoto University, Kumamoto, Japan; Kagoshima University Graduate School, Kagoshima, Japan; Department of Medical Informatics, Kyushu University Hospital, Fukuoka, Japan
| | - H. Baba
- Institute of Clinical Research, National Beppu Medical Center, Beppu, Japan; Department of Surgery and Science, Kyushu University, Fukuoka, Japan; Department of Surgery, Kurume University School of Medicine, Kurume, Japan; Department of Surgery, Ryukyu University, Nakagami-Gun, Japan; Kumamoto University, Kumamoto, Japan; Kagoshima University Graduate School, Kagoshima, Japan; Department of Medical Informatics, Kyushu University Hospital, Fukuoka, Japan
| | - S. Natsugoe
- Institute of Clinical Research, National Beppu Medical Center, Beppu, Japan; Department of Surgery and Science, Kyushu University, Fukuoka, Japan; Department of Surgery, Kurume University School of Medicine, Kurume, Japan; Department of Surgery, Ryukyu University, Nakagami-Gun, Japan; Kumamoto University, Kumamoto, Japan; Kagoshima University Graduate School, Kagoshima, Japan; Department of Medical Informatics, Kyushu University Hospital, Fukuoka, Japan
| | - S. Tokunaga
- Institute of Clinical Research, National Beppu Medical Center, Beppu, Japan; Department of Surgery and Science, Kyushu University, Fukuoka, Japan; Department of Surgery, Kurume University School of Medicine, Kurume, Japan; Department of Surgery, Ryukyu University, Nakagami-Gun, Japan; Kumamoto University, Kumamoto, Japan; Kagoshima University Graduate School, Kagoshima, Japan; Department of Medical Informatics, Kyushu University Hospital, Fukuoka, Japan
| | - Y. Maehara
- Institute of Clinical Research, National Beppu Medical Center, Beppu, Japan; Department of Surgery and Science, Kyushu University, Fukuoka, Japan; Department of Surgery, Kurume University School of Medicine, Kurume, Japan; Department of Surgery, Ryukyu University, Nakagami-Gun, Japan; Kumamoto University, Kumamoto, Japan; Kagoshima University Graduate School, Kagoshima, Japan; Department of Medical Informatics, Kyushu University Hospital, Fukuoka, Japan
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Kodama J, Seki N, Masahiro S, Kusumoto T, Nakamura K, Hongo A, Hiramatsu Y. D-dimer level as a risk factor for postoperative venous thromboembolism in Japanese women with gynecologic cancer. Ann Oncol 2010; 21:1651-1656. [DOI: 10.1093/annonc/mdq012] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Akagi Y, Tokunaga S, Emi Y, Kakeji Y, Kusumoto T, Baba H, Ogata Y, Tanaka T, Shirouzu K, Maehara Y. Phase II trial alternating mFOLFOX 6 and FOLFIRI (FIREFOX) regimens in first-line treatment of advanced colorectal cancer in Japanese patients (KSCC 0701). J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.3553] [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: 11/20/2022] Open
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Oki E, Kakeji Y, Morita M, Emi Y, Taketomi A, Kusumoto T, Maehara Y. Transient elastography for the assessment of oxaliplatin-associated liver damage in colon cancer patients with liver metastasis. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e14088] [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: 11/20/2022] Open
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Seki N, Kodama J, Kusumoto T, Nakamura K, Hongo A, Hiramatsu Y. Complications and obstetric outcomes after laser conization during pregnancy. EUR J GYNAECOL ONCOL 2010; 31:399-401. [PMID: 20882881] [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: 05/29/2023]
Abstract
OBJECTIVE The purpose of the present study was to evaluate the efficacy of diagnostic laser conization and the obstetric outcomes of patients undergoing diagnostic laser conization during pregnancy. STUDY DESIGN The study population consisted of a consecutive series of 47 patients who presented with histologically proven carcinoma in situ microinvasive carcinoma and were treated with laser conization during pregnancy. RESULTS Diagnostic laser conization was performed at 3-28 weeks (median, 13 weeks) of gestation. Intraoperative blood loss of > 500 ml was observed in two cases (4.3%); however, hemotransfusion was not required in either case. In the early postoperative period, two miscarriages due to preterm premature rupture of the membrane were observed. In the late postoperative period, one spontaneous abortion, three preterm deliveries, and one neonatal death were observed. All the poor obstetric outcomes were observed in the case of patients who underwent conization in the first trimester. The pathology report for the laser conization revealed that two patients (4.3%) had invasive carcinoma. Of the 47 patients, 29 (61.7%) had positive cervical margin, and 13 required postpartum surgical intervention. All patients treated were disease-free at the time of the subsequent follow-up. CONCLUSIONS The results of the present study suggest that laser conization in pregnant patients is feasible and is comparable to cold-knife conization and loop electrosurgical excision procedures with regard to the rates of complication and obstetric outcomes. Furthermore, they indicate that the optimal time for conization is probably the second trimester.
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Affiliation(s)
- N Seki
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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Emi Y, Orita H, Yamamoto M, Sadanaga T, Kusumoto T, Takahashi I, Kakeji Y, Maehara Y. 6536 Feasibility of adjuvant S-1 plus docetaxel against stage II-III gastric cancer following R0 resection in gastrectomy. EJC Suppl 2009. [DOI: 10.1016/s1359-6349(09)71258-3] [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: 10/20/2022] Open
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Kodama J, Kusumoto T, Seki N, Matsuo T, Nakamura K, Hongo A, Hiramatsu Y. Versican expression in human cervical cancer. Eur J Cancer 2007; 43:1460-6. [PMID: 17446061 DOI: 10.1016/j.ejca.2007.02.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2006] [Revised: 02/17/2007] [Accepted: 02/21/2007] [Indexed: 12/18/2022]
Abstract
Versican expression may enhance tumour invasion and metastasis. However, the expressions of versican in cervical cancer have seldom been characterised. The aim of this study was to investigate versican expression in human cervical cancers. We immunohistochemically investigated the expression of versican protein in 174 cervical cancers and analysed the correlation with various clinicopathological features, including patient outcome. Stromal versican expression was significantly higher in patients with lymph node metastasis (p<0.0001). Epithelial versican expression was significantly higher in patients with non-squamous cell cercinoma (p=0.0003), lymph-vascular space invasion (p=0.046), lymph node metastasis (p=0.009) and ovarian metastasis (p=0.0001). Multivariate analysis showed that high epithelial versican expression was an independent prognostic factor for disease-free survival. Versican enrichment of the tumour tissue may be associated with progression in cervical cancer. Versican expression can serve as an indicator of poor prognosis in patients with cervical cancer.
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Affiliation(s)
- J Kodama
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Okayama 700-8558, Japan.
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Kodama J, Kusumoto T, Seki N, Matsuo T, Ojima Y, Nakamura K, Hongo A, Hiramatsu Y. Heparanase expression in both normal endometrium and endometrial cancer. Int J Gynecol Cancer 2007; 16:1401-6. [PMID: 16803537 DOI: 10.1111/j.1525-1438.2006.00614.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
The aim of this study was to investigate the relationship between heparanase expression and prognostic factors in endometrial cancer, as well as the relationship between heparanase expression during phases of the normal endometrial cycle. Immunohistochemical analysis of 166 endometrial cancers and 34 normal endometria in various phases of growth was performed. The heparanase expression in the late-proliferative phase of normal endometria was found to be significantly higher than in either the early-proliferative or the secretory phases (P= .012 and P= .044, respectively). Heparanase expression was also significantly higher in endometrial cancer patients with tumors of an advanced FIGO stage (P= .0003) and high FIGO grade (P= .004) and with cancers showing either deep myometrial invasion (P= .023), lymph node metastasis (P= .006), lymphvascular space involvement (P= .048), or positive peritoneal cytology (P= .010). The disease-free and overall survival rates of patients with intense heparanase expression were significantly lower than those of patients with absent or moderate heparanase expression (P= .004 and P= .002, respectively). Heparanase may participate in normal endometrial remodeling and can serve as an indicator of the aggressive potential and poor prognosis of endometrial cancers.
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Kodama J, Kusumoto T, Seki N, Matsuo T, Ojima Y, Nakamura K, Hongo A, Hiramatsu Y. Association of CXCR4 and CCR7 chemokine receptor expression and lymph node metastasis in human cervical cancer. Ann Oncol 2007; 18:70-76. [PMID: 17032700 DOI: 10.1093/annonc/mdl342] [Citation(s) in RCA: 101] [Impact Index Per Article: 5.9] [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: 12/14/2022] Open
Abstract
BACKGROUND The chemokine receptors CXCR4 and CCR7 have been suggested to play an important role in cancer invasion and metastasis. The expression of these receptors in human cervical cancer, however, has seldom been characterized. PATIENTS AND METHODS We investigated the expression of CXCR4 and CCR7 in cervical cancer specimens and determined the association between their expression and the clinicopathological features observed, including patient outcome. RESULTS CXCR4 expression was significantly higher in elderly patients (P=0.025); it was also significantly increased in patients with cancers displaying large tumor size (P=0.010), deep stromal invasion (P=0.0004), lymph-vascular space involvement (P=0.0002), or lymph node metastasis (P<0.0001). CCR7 expression was significantly higher in cases of squamous cell carcinomas (P=0.010) and in patients with cancers showing large tumor size (P<0.0001), deep stromal invasion (P<0.0001), vaginal invasion (P=0.047), lymph-vascular space involvement (P=0.012), or lymph node metastasis (P<0.0001). Logistic regression analysis revealed that deep stromal invasion (P=0.017) and CXCR4 (P=0.016) and CCR7 (P=0.022) expression were independent factors that influenced pelvic lymph node metastasis. The disease-free survival and overall survival (OS) rates of patients exhibiting both CXCR4 and CCR7 expression were significantly reduced (P<0.0001). In addition, the expression of both CXCR4 and CCR7 was an independent prognostic factor for OS (95% confidence interval=1.03-17.86; P=0.046). CONCLUSIONS CXCR4 and CCR7 expression may be associated with lymph node metastasis; moreover, the expression of these receptors can serve as an indicator of poor prognosis in patients with cervical cancer.
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Affiliation(s)
- J Kodama
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan.
| | - T Kusumoto
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - N Seki
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - T Matsuo
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Y Ojima
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - K Nakamura
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - A Hongo
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Y Hiramatsu
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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Kodama J, Seki N, Kusumoto T, Hiramatsu Y. Expression of the CXCR4 and CCR7 chemokine receptors in human endometrial cancer. EUR J GYNAECOL ONCOL 2007; 28:370-375. [PMID: 17966215] [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: 05/25/2023]
Abstract
PURPOSE The chemokine receptors CXCR4 and CCR7 have been suggested to play an important role in cancer progression but their expression in human endometrial cancer has not been fully characterized. The aim of this study was to investigate CXCR4 and CCR7 expression in endometrial cancers. METHODS We immunohistochemically investigated the expression of CXCR4 and CCR7 protein in 166 endometrial cancers and analyzed the correlation with various observed clinicopathological features, including patient outcome. Fresh tumor specimens were obtained from 55 of the 166 endometrial cancer patients, and the expression levels of the CXCR4 and CCR7 genes were also examined in this subgroup. RESULTS Our results indicate that CXCR4 and CCR7 transcripts levels are significantly higher in tumors that express the corresponding protein products. CXCR4 and CCR7 protein expression levels were found to be significantly lower in patients with endometrial tumors of a high grade. Consistent with this, the overall survival rates were significantly better in patients exhibiting higher levels of CXCR4 and CCR7 expression. CONCLUSION We thus hypothesize that CXCR4 and CCR7 protein levels are suppressed in high-grade endometrial tumors, but that the expression of these receptors per se may not be a crucial role in tumor progression or metastasis in these cancers.
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Affiliation(s)
- J Kodama
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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Kodama J, Kusumoto T, Seki N, Matsuo T, Ojima Y, Nakamura K, Hongo A, Hiramatsu Y. Prognostic significance of stromal versican expression in human endometrial cancer. Ann Oncol 2006; 18:269-74. [PMID: 17065588 DOI: 10.1093/annonc/mdl370] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND Versican expression may enhance tumor invasion and metastasis. However, the expression of versican in human endometrial cancer has seldom been characterized. The aim of this study was to investigate versican expression in endometrial cancers. PATIENTS AND METHODS We immunohistochemically investigated the expression of versican protein in 167 endometrial cancers and analyzed the correlation with various observed clinicopathological features, including patient outcome. RESULTS Stromal versican expression was significantly higher in the advanced-stage (P = 0.010) and high-grade (P = 0.049) cancers, lymph node metastasis (P = 0.012), and ovarian metastasis (P = 0.024). Epithelial versican expression was significantly higher in patients with lymph node metastasis (P = 0.014) and lymph-vascular space involvement (P = 0.014). The disease-free survival (DFS) and overall survival (OS) rates of patients exhibiting high stromal versican expression were significantly lower than those of patients exhibiting low stromal versican expression (P < 0.0001). Multivariate analysis showed that high stromal versican expression was an independent prognostic factor for DFS and OS. CONCLUSIONS Versican enrichment of the stroma may be associated with tumor progression in endometrial cancer. Stromal versican expression can serve as an indicator of poor prognosis for patients with endometrial cancer.
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Affiliation(s)
- J Kodama
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan.
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Kodama J, Kusumoto T, Seki N, Matsuo T, Ojima Y, Nakamura K, Hongo A, Hiramatsu Y. Heparanase expression in both normal endometrium and endometrial cancer. Int J Gynecol Cancer 2006. [DOI: 10.1136/ijgc-00009577-200605000-00069] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
The aim of this study was to investigate the relationship between heparanase expression and prognostic factors in endometrial cancer, as well as the relationship between heparanase expression during phases of the normal endometrial cycle. Immunohistochemical analysis of 166 endometrial cancers and 34 normal endometria in various phases of growth was performed. The heparanase expression in the late-proliferative phase of normal endometria was found to be significantly higher than in either the early-proliferative or the secretory phases (P = .012 and P = .044, respectively). Heparanase expression was also significantly higher in endometrial cancer patients with tumors of an advanced FIGO stage (P = .0003) and high FIGO grade (P = .004) and with cancers showing either deep myometrial invasion (P = .023), lymph node metastasis (P = .006), lymphvascular space involvement (P = .048), or positive peritoneal cytology (P = .010). The disease-free and overall survival rates of patients with intense heparanase expression were significantly lower than those of patients with absent or moderate heparanase expression (P = .004 and P = .002, respectively). Heparanase may participate in normal endometrial remodeling and can serve as an indicator of the aggressive potential and poor prognosis of endometrial cancers.
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Abstract
BACKGROUND Syndecan-1 binds to various extracellular matrix components via its heparan sulfate glycosaminoglycans. The aim of this study was to investigate syndecan-1 expression in endometrial cancers. PATIENTS AND METHODS We investigated the expression of the syndecan-1 core protein by immunohistochemistry in 109 endometrial cancers, and analyzed correlation with various clinicopathological features, including patient outcome. RESULTS Epithelial syndecan-1 expression was significantly lower in advanced stage, high grade, deep myometrial invasion, cervical involvement, lymph node metastasis, lymph vascular space involvement and positive peritoneal cytology. Stromal syndecan-1 expression was significantly higher in high-grade tumors. The disease-free and overall survival rates of patients exhibiting both low epithelial and high stromal syndecan-1 expression was poor. Multivariate analysis showed that high stromal syndecan-1 expression was an independent prognostic factor for both disease-free and overall survival. Low epithelial syndecan-1 expression was a prognostic factor only in the univariate analysis. CONCLUSIONS Loss of epithelial syndecan-1 and induction of stromal syndecan-1 expression may be associated with tumor progression. Stromal syndecan-1 expression can serve as an indicator of poor prognosis in patients with endometrial cancer.
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Kodama J, Kusumoto T, Shinyo Y, Seki N, Nakamura K, Hongo A, Hiramatsu Y. Loss of basement membrane heparan sulfate expression is associated with tumor progression in endometrial cancer. EUR J GYNAECOL ONCOL 2005; 26:403-6. [PMID: 16122188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Perlecan is a major heparan sulfate proteoglycan (HPSG) of the basement membrane (BM) and binds to various cytokines and growth factors via its heparan sulfate glycosaminoglycan (HS-GAG) chains. The aim of this study was to investigate BM HS-GAG expression in endometrial cancers. We investigated the expression of BM HS-GAG by immunohistochemistry in 109 endometrial cancers and analyzed correlations with various clinicopathological features. The HS-GAG expression index was significantly lower in cases of advanced stage, high-grade, deep myometrial invasion, positive peritoneal cytology, lymph vascular space invasion and lymph node metastasis. There was no association between HS-GAG expression status and patient outcome. Decreased HS-GAG expression of BM is associated with tumor progression, but is not be a useful prognostic factor in patients presenting with endometrial cancer.
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Tsubaki K, Nuruzzaman M, Kusumoto T, Hayashi N, Bin-Gui W, Fuji K. Visual enantiomeric recognition using chiral phenolphthalein derivatives. Org Lett 2001; 3:4071-3. [PMID: 11735587 DOI: 10.1021/ol016825a] [Citation(s) in RCA: 46] [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: 11/30/2022]
Abstract
[structure: see text] Optically active artificial host molecules 2-5 based on a phenolphthalein skeleton have been prepared for visual enantiomeric recognition of alanine derivatives 8 and 9. The receptor 3 discriminates (R)-8 and (R)-9 from (S)-8 and (S)-9, respectively, to develop a purple color.
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Affiliation(s)
- K Tsubaki
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
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Tsubaki K, Hayashi N, Nuruzzaman M, Kusumoto T, Fuji K. Visual recognition of triamines by phenolphthalein derivatives: consideration of the structure of the colored complex. Org Lett 2001; 3:4067-9. [PMID: 11735586 DOI: 10.1021/ol016823q] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[structure: see text] A hybrid molecule 1 consisting of phenolphthalein and two crown ether moieties can be used to discriminate the length of linear triamines strictly by color development. The purple color is developed most deeply at -10 degrees C and fades with either an increase or decrease in temperature.
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Affiliation(s)
- K Tsubaki
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
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Kusumoto T, Miyamoto THiguchi R, Doi S, Sugimoto H, Yamada H. Isolation and structures of two new compounds from the essential oil of Brazilian propolis. Chem Pharm Bull (Tokyo) 2001; 49:1207-9. [PMID: 11558615 DOI: 10.1248/cpb.49.1207] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Two new and seven known compounds, including terpenoids and aromatic compounds, were isolated from the essential oil of Brazilian propolis. The structures of the new compounds were elucidated as 2,2-dimethyl-8-prenyl-6-vinylchromene (1) and 2,6-diprenyl-4-vinylphenol (2) on the basis of spectroscopic analyses.
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Affiliation(s)
- T Kusumoto
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
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Shirai Y, Wakatsuki Y, Kusumoto T, Nakata M, Yoshida M, Usui T, Iizuka T, Kita T. Induction and maintenance of immune effector cells in the gastric tissue of mice orally immunized to Helicobacter pylori requires salivary glands. Gastroenterology 2000; 118:749-59. [PMID: 10734026 DOI: 10.1016/s0016-5085(00)70144-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS Helicobactor pylori mostly colonizes the gastric mucus that contains salivary antibodies. We studied the role of saliva in the induction and maintenance of gastric immunity conferred by oral vaccination against H. pylori. METHODS C57BL/6 mice underwent a sialoadenectomy before and after intragastric immunization using whole-cell sonicates of H. pylori and cholera toxin as an adjuvant. At 1 and 6 months after oral inoculation, we assessed the density of the H. pylori colonizing the stomach, specific antibodies in gastric secretion and sera, and the constituents of cellular infiltrates in the tissue. RESULTS A sialoadenectomy before, but not after, immunization abrogated protection by the vaccination at 1 month after inoculation. Protected mice had more neutrophils, plasma cells, and lymphocytes, but fewer eosinophils, in the gastric tissue than nonprotected mice. Protected mice had a greater increase of immunoglobulin (Ig) G1 specific to H. pylori than IgG2a in sera. At 6 months after inoculation, oral immunization was less effective in mice who had a sialoadenectomy than in control immunized mice. The antibody titers in both gastric secretion and in sera did not correlate with the density of bacteria colonizing the stomach. CONCLUSIONS It is suggested that, in intragastric immunization against H. pylori, saliva is necessary for both the induction and maintenance of optimal immunity in the stomach. Effective immunity was associated with an increased number of neutrophils and lymphocytes in gastric tissue.
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Affiliation(s)
- Y Shirai
- Department of Clinical Bioregulatory Science, Kyoto University Graduate School of Medicine, Kyoto, Japan
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Yoshida N, Ohmoto H, Masaoka H, Noma J, Sawai H, Kusumoto T. Method of preserving urinary bladder function in type III radical hysterectomy. Int J Gynaecol Obstet 2000. [DOI: 10.1016/s0020-7292(00)85114-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Yamamoto M, Maehara Y, Oda S, Ichiyoshi Y, Kusumoto T, Sugimachi K. The p53 tumor suppressor gene in anticancer agent-induced apoptosis and chemosensitivity of human gastrointestinal cancer cell lines. Cancer Chemother Pharmacol 1999; 43:43-9. [PMID: 9923540 DOI: 10.1007/s002800050861] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
PURPOSE While the target of many anticancer agents has been identified, the processes leading to killing of the cancer cells and the molecular basis of resistance to the drugs are not well understood. We used human gastrointestinal cancer cell lines and examined how anticancer agents induced cell killing and how the chemosensitivity of these lines was determined. METHODS Twelve gastrointestinal cancer cell lines were examined for the presence of either a wild-type or mutant p53 gene by direct sequencing. We also determined whether or not cell killing would occur when the cell lines were exposed to anticancer drugs. The sensitivity to the anticancer agents was determined based on colony formation. RESULTS All 12 gastrointestinal cancer cell lines carried either a wild-type or mutant p53 gene. Three lines, MKN45, MKN74 and COLO320, carried the wild-type p53 gene, and nine carried the mutant p53 gene. When three lines were exposed to the anticancer agents etoposide, doxorubicin (DXR) or 5-fluorouracil (5-FU), cell death ensued. In these cells, the population of cells in G1 phase increased after exposure to high-dose anticancer agents, but cells in G2 phase increased when exposed to low-dose anticancer agents. Our observations support the concept that cells carrying the wild-type p53 gene tend to be sensitive to etoposide and DXR and, in particular, deletion of the p53 function results in a greater resistance to anticancer agents. CONCLUSION Based on our findings, human gastrointestinal cancer-related cell death apparently occurs via a p53-dependent pathway. A relationship was observed between the induction of cell death and chemosensitivity.
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Affiliation(s)
- M Yamamoto
- Cancer Center of Kyushu University Hospital, Kyushu University, Fukuoka, Japan
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