1
|
Yamayoshi S, Nagai E, Mitamura K, Hagihara M, Kobayashi R, Takahashi S, Shibata A, Uwamino Y, Hasegawa N, Iqbal A, Kamimaki I, Iwatsuki-Horimoto K, Nagamura-Inoue T, Kawaoka Y. Seroprevalence of severe acute respiratory syndrome coronavirus 2 N antibodies between December 2021 and march 2023 in Japan. Epidemiol Infect 2024; 152:e24. [PMID: 38258464 PMCID: PMC10894890 DOI: 10.1017/s0950268824000141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 01/01/2024] [Accepted: 01/10/2024] [Indexed: 01/24/2024] Open
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) emerged in 2019 in China and rapidly spread worldwide, leading to a pandemic. The threat of SARS-CoV-2 is subsiding as most people have acquired sufficient antibodies through vaccination and/or infection to prevent severe COVID-19. After the emergence of the omicron variants, the seroprevalence of antibodies against the N protein elicited by SARS-CoV-2 infection ranged from 44.4% to 80.2% in countries other than Japan. Here, we assessed the seroprevalence in Japan before and after the appearance of omicron variants. Serosurveillance of antibodies against N was conducted between December 2021 and March 2023 in Japan. In total, 7604 and 3354 residual serum or plasma samples were collected in the Tokyo metropolitan area and Sapporo, respectively. We found that the seroprevalence in representative regions of Japan increased approximately 3% to 23% after the emergence of the omicron variants. We also found higher seroprevalence among the young compared with the elderly. Our findings indicate that unlike other countries, most of the Japanese population has not been infected, raising the possibility of future SARS-CoV-2 epidemics in Japan.
Collapse
Affiliation(s)
- Seiya Yamayoshi
- Division of Virology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
- International Research Center for Infectious Diseases, Institute of Medical Science, University of Tokyo, Tokyo, Japan
- Research Center for Global Viral Infections, National Center for Global Health and Medicine Research Institute, Tokyo, Japan
| | - Etsuko Nagai
- Department of Laboratory Medicine, Research Hospital, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Keiko Mitamura
- Division of Infection Control, Eiju General Hospital, Tokyo, Japan
| | - Masao Hagihara
- Department of Hematology, Eiju General Hospital, Tokyo, Japan
| | - Ryo Kobayashi
- Division of Laboratory Medicine, Sapporo Medical University Hospital, Sapporo, Japan
| | - Satoshi Takahashi
- Department of Infection Control and Laboratory Medicine, Sapporo Medical University, Sapporo, Japan
| | - Akimichi Shibata
- Department of Pediatrics, Japanese Red Cross Ashikaga Hospital, Tochigi, Japan
- Department of Pediatrics, School of Medicine, Keio University, Tokyo, Japan
| | - Yoshifumi Uwamino
- Department of Laboratory Medicine, School of Medicine, Keio University, Tokyo, Japan
| | - Naoki Hasegawa
- Department of Infectious Diseases, School of Medicine, Keio University, Tokyo, Japan
| | - Asef Iqbal
- Department of Pediatrics, NHO Saitama Hospital, Saitama, Japan
| | - Isamu Kamimaki
- Department of Pediatrics, NHO Saitama Hospital, Saitama, Japan
| | | | - Tokiko Nagamura-Inoue
- Department of Laboratory Medicine, Research Hospital, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Yoshihiro Kawaoka
- Division of Virology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
- Research Center for Global Viral Infections, National Center for Global Health and Medicine Research Institute, Tokyo, Japan
- The University of Tokyo Pandemic Preparedness, Infection and Advanced Research Center, Tokyo, Japan
- Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin–Madison, Madison, WI, USA
| |
Collapse
|
2
|
Nakagama Y, Candray K, Kaku N, Komase Y, Rodriguez-Funes MV, Dominguez R, Tsuchida T, Kunishima H, Nagai E, Adachi E, Ngoyi DM, Yamasue M, Komiya K, Hiramatsu K, Uemura N, Sugiura Y, Yasugi M, Yamagishi Y, Mikamo H, Shiraishi S, Izumo T, Nakagama S, Watanabe C, Nitahara Y, Tshibangu-Kabamba E, Kakeya H, Kido Y. Antibody avidity maturation, following recovery from infection or the booster vaccination, grants breadth in SARS-CoV-2 neutralizing capacity. J Infect Dis 2022; 227:780-787. [PMID: 36546706 PMCID: PMC10044078 DOI: 10.1093/infdis/jiac492] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 12/09/2022] [Accepted: 12/21/2022] [Indexed: 12/24/2022] Open
Abstract
Abstract
Background
Cross-neutralizing capacity of antibodies against SARS-CoV-2 variants is important in mitigating (re-)exposures. Role of antibody maturation, the process whereby selection of higher affinity antibodies augments host immunity, to determine SARS-CoV-2 neutralizing capacity was investigated.
Methods
Sera from SARS-CoV-2 convalescents at 2-, 6-, or 10-months post-recovery, and BNT162b2 vaccine recipients at 3- or 25-weeks post-vaccination, were analyzed. Anti-spike IgG avidity was measured on urea-treated ELISAs. Neutralizing capacity was assessed by surrogate neutralization assays. Fold change between variant and wild-type neutralization inferred the breadth of neutralizing capacity.
Results
Compared with early-convalescence, avidity indices of late-convalescent sera were significantly higher (median 37.7 (interquartile range 28.4–45.1) vs. 64.9 (57.5–71.5), p < 0.0001). Urea-resistant, high-avidity IgG best predicted neutralizing capacity (Spearman’s r = 0.49 vs. 0.67 (wild-type); 0.18–0.52 vs. 0.48–0.83 (variants)). Higher-avidity convalescent sera better cross-neutralized SARS-CoV-2 variants (p < 0.001 (Alpha); p < 0.01 (Delta and Omicron)). Vaccinees only experienced meaningful avidity maturation following the booster dose, exhibiting rather limited cross-neutralizing capacity at week-25.
Conclusions
Avidity maturation was progressive beyond acute recovery from infection, or became apparent after the booster vaccine dose, granting broader anti-SARS-CoV-2 neutralizing capacity. Understanding the maturation kinetics of the two building blocks of anti-SARS-CoV-2 humoral immunity is crucial.
Collapse
Affiliation(s)
- Yu Nakagama
- Department of Virology & Parasitology, Graduate School of Medicine, Osaka Metropolitan University , Osaka , Japan
- Research Center for Infectious Disease Sciences, Graduate School of Medicine, Osaka Metropolitan University , Osaka , Japan
| | - Katherine Candray
- Department of Virology & Parasitology, Graduate School of Medicine, Osaka Metropolitan University , Osaka , Japan
- Research Center for Infectious Disease Sciences, Graduate School of Medicine, Osaka Metropolitan University , Osaka , Japan
- Centro Nacional de Investigaciones Científicas de El Salvador (CICES) , San Salvador, El Salvador
| | - Natsuko Kaku
- Department of Virology & Parasitology, Graduate School of Medicine, Osaka Metropolitan University , Osaka , Japan
- Research Center for Infectious Disease Sciences, Graduate School of Medicine, Osaka Metropolitan University , Osaka , Japan
| | - Yuko Komase
- Department of Respiratory Internal Medicine, St. Marianna University, Yokohama Seibu Hospital , Yokohama , Japan
| | | | - Rhina Dominguez
- El Salvador National Institute of Health , San Salvador, El Salvador
| | - Tomoya Tsuchida
- Division of General Internal Medicine, St. Marianna University School of Medicine , Kawasaki , Japan
| | - Hiroyuki Kunishima
- Department of Infectious Diseases, St. Marianna University School of Medicine , Kawasaki , Japan
| | - Etsuko Nagai
- Department of Infectious Diseases and Applied Immunology, Institute of Medical Science, The University of Tokyo , Tokyo , Japan
| | - Eisuke Adachi
- Department of Infectious Diseases and Applied Immunology, Institute of Medical Science, The University of Tokyo , Tokyo , Japan
| | - Dieudonné Mumba Ngoyi
- Institut National de Recherche Biomedicale, Kinshasa, Democratic Republic of the Congo
| | - Mari Yamasue
- Department of Respiratory Medicine and Infectious Diseases, Oita University Faculty of Medicine , Oita , Japan
| | - Kosaku Komiya
- Department of Respiratory Medicine and Infectious Diseases, Oita University Faculty of Medicine , Oita , Japan
| | - Kazufumi Hiramatsu
- Department of Respiratory Medicine and Infectious Diseases, Oita University Faculty of Medicine , Oita , Japan
| | - Naoto Uemura
- Department of Respiratory Medicine and Infectious Diseases, Oita University Faculty of Medicine , Oita , Japan
| | - Yuki Sugiura
- Center for Cancer Immunotherapy and Immunobiology, Kyoto University Graduate School of Medicine , Kyoto , Japan
| | - Mayo Yasugi
- Graduate School of Veterinary Science, Osaka Metropolitan University , Osaka , Japan
- Asian Health Science Research Institute, Osaka Metropolitan University , Osaka , Japan
- Osaka International Research Center for Infectious Diseases, Osaka Metropolitan University , Osaka , Japan
| | - Yuka Yamagishi
- Department of Clinical Infectious Diseases, Aichi Medical University , Aichi , Japan
| | - Hiroshige Mikamo
- Department of Clinical Infectious Diseases, Aichi Medical University , Aichi , Japan
| | - Satoshi Shiraishi
- Department of Respiratory Medicine, Osaka City Juso Hospital , Osaka , Japan
| | - Takehiro Izumo
- Department of Respiratory Medicine, Japanese Red Cross Medical Center , Tokyo , Japan
| | - Sachie Nakagama
- Department of Virology & Parasitology, Graduate School of Medicine, Osaka Metropolitan University , Osaka , Japan
- Research Center for Infectious Disease Sciences, Graduate School of Medicine, Osaka Metropolitan University , Osaka , Japan
| | - Chihiro Watanabe
- Department of Virology & Parasitology, Graduate School of Medicine, Osaka Metropolitan University , Osaka , Japan
- Research Center for Infectious Disease Sciences, Graduate School of Medicine, Osaka Metropolitan University , Osaka , Japan
| | - Yuko Nitahara
- Department of Virology & Parasitology, Graduate School of Medicine, Osaka Metropolitan University , Osaka , Japan
- Research Center for Infectious Disease Sciences, Graduate School of Medicine, Osaka Metropolitan University , Osaka , Japan
| | - Evariste Tshibangu-Kabamba
- Department of Virology & Parasitology, Graduate School of Medicine, Osaka Metropolitan University , Osaka , Japan
- Research Center for Infectious Disease Sciences, Graduate School of Medicine, Osaka Metropolitan University , Osaka , Japan
| | - Hiroshi Kakeya
- Research Center for Infectious Disease Sciences, Graduate School of Medicine, Osaka Metropolitan University , Osaka , Japan
- Department of Infection Control Science, Graduate School of Medicine, Osaka Metropolitan University , Osaka , Japan
| | - Yasutoshi Kido
- Department of Virology & Parasitology, Graduate School of Medicine, Osaka Metropolitan University , Osaka , Japan
- Research Center for Infectious Disease Sciences, Graduate School of Medicine, Osaka Metropolitan University , Osaka , Japan
| |
Collapse
|
3
|
Adachi E, Nagai E, Saito M, Isobe M, Konuma T, Koga M, Tsutsumi T, Nannya Y, Yotsuyanagi H. Anti-spike protein antibody titer at the time of breakthrough infection of SARS-CoV-2 omicron. J Infect Chemother 2022; 28:1015-1017. [PMID: 35397976 PMCID: PMC8971116 DOI: 10.1016/j.jiac.2022.03.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 03/02/2022] [Accepted: 03/23/2022] [Indexed: 12/13/2022]
Abstract
By December 2021, about 80% of people over the age of 12 had been vaccinated in Japan, and almost all people were vaccinated with the mRNA vaccine. We investigated here the anti-spike protein antibody titer at the time of breakthrough infection of SARS-CoV-2 omicron. A total of 32 SARS-CoV2 omicron breakthrough infection was included in the study. The median antibody titer at breakthrough infection was 776 AU/mL overall, of which the median antibody titer of BNT162b2 vaccinated was 633 AU/mL and that of mRNA-1273 vaccinated was 9416 AU/mL. This result suggests that low levels of antibody titers 6 months after vaccination do not provide sufficient antibodies to prevent the omicron variant breakthrough infection, which may occur with a higher anti-spike antibody titer after vaccination with mRNA-1273. However, antibody titers in some patients were comparable to those immediately after the second vaccination with either mRNA vaccine.
Collapse
Affiliation(s)
- Eisuke Adachi
- Department of Infectious Diseases and Applied Immunology, IMSUT Hospital of the Institute of Medical Science, The University of Tokyo, Tokyo, Japan.
| | - Etsuko Nagai
- Department of Laboratory Medicine, IMSUT Hospital of the Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Makoto Saito
- Division of Infectious Diseases, Advanced Clinical Research Center, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Masamichi Isobe
- Department of Hematology/Oncology IMSUT Hospital of the Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Takaaki Konuma
- Division of Hematopoietic Disease Control, Advanced Clinical Research Center, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Michiko Koga
- Division of Infectious Diseases, Advanced Clinical Research Center, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Takeya Tsutsumi
- Division of Infectious Diseases, Advanced Clinical Research Center, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Yasuhito Nannya
- Department of Hematology/Oncology IMSUT Hospital of the Institute of Medical Science, The University of Tokyo, Tokyo, Japan; Division of Hematopoietic Disease Control, Advanced Clinical Research Center, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Hiroshi Yotsuyanagi
- Department of Infectious Diseases and Applied Immunology, IMSUT Hospital of the Institute of Medical Science, The University of Tokyo, Tokyo, Japan; Division of Infectious Diseases, Advanced Clinical Research Center, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| |
Collapse
|
4
|
Mizukami M, Konuma T, Nagai E, Monna-Oiwa M, Isobe M, Kato S, Takahashi S, Tojo A, Nannya Y. Early prediction of neutrophil engraftment using manual leukocyte differential count after cord blood transplantation. Int J Lab Hematol 2022; 44:e156-e159. [PMID: 35132774 DOI: 10.1111/ijlh.13803] [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] [Received: 11/15/2021] [Revised: 12/27/2021] [Accepted: 01/21/2022] [Indexed: 11/29/2022]
Affiliation(s)
- Motoko Mizukami
- Department of Laboratory Medicine, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Takaaki Konuma
- Department of Hematology/Oncology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Etsuko Nagai
- Department of Laboratory Medicine, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Maki Monna-Oiwa
- Department of Hematology/Oncology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Masamichi Isobe
- Department of Hematology/Oncology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Seiko Kato
- Division of Clinical Precision Research Platform, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Satoshi Takahashi
- Division of Clinical Precision Research Platform, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Arinobu Tojo
- Department of Laboratory Medicine, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan.,Department of Hematology/Oncology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Yasuhito Nannya
- Department of Hematology/Oncology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| |
Collapse
|
5
|
Yamamoto S, Saito M, Nagai E, Toriuchi K, Nagai H, Yotsuyanagi H, Nakagama Y, Kido Y, Adachi E. Antibody response to SARS-CoV-2 in people living with HIV. J Microbiol Immunol Infect 2020; 54:144-146. [PMID: 33046418 PMCID: PMC7531336 DOI: 10.1016/j.jmii.2020.09.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 09/27/2020] [Indexed: 11/26/2022]
Affiliation(s)
- Shinya Yamamoto
- Department of Infectious Diseases and Applied Immunology, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Makoto Saito
- Department of Infectious Diseases and Applied Immunology, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Etsuko Nagai
- Department of Infectious Diseases and Applied Immunology, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Keiko Toriuchi
- Department of Infectious Diseases and Applied Immunology, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Hiroyuki Nagai
- Department of Infectious Diseases and Applied Immunology, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Hiroshi Yotsuyanagi
- Department of Infectious Diseases and Applied Immunology, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Yu Nakagama
- Department of Parasitology, Graduate Scholl of Medicine, Osaka City University, Osaka, Japan
| | - Yasutoshi Kido
- Department of Parasitology, Graduate Scholl of Medicine, Osaka City University, Osaka, Japan
| | - Eisuke Adachi
- Department of Infectious Diseases and Applied Immunology, Institute of Medical Science, The University of Tokyo, Tokyo, Japan.
| |
Collapse
|
6
|
Yamamoto S, Saito M, Nagai E, Toriuchi K, Nagai H, Yotsuyanagi H, Nakagama Y, Kido Y, Adachi E. Seroconversion against SARS-CoV-2 occurred after the recovery in patients with COVID-19. J Med Virol 2020; 93:692-694. [PMID: 32897566 DOI: 10.1002/jmv.26495] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 08/30/2020] [Accepted: 09/06/2020] [Indexed: 11/12/2022]
Affiliation(s)
- Shinya Yamamoto
- Department of Infectious Diseases and Applied Immunology, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Makoto Saito
- Department of Infectious Diseases and Applied Immunology, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Etsuko Nagai
- Department of Infectious Diseases and Applied Immunology, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Keiko Toriuchi
- Department of Infectious Diseases and Applied Immunology, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Hiroyuki Nagai
- Department of Infectious Diseases and Applied Immunology, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Hiroshi Yotsuyanagi
- Department of Infectious Diseases and Applied Immunology, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Yu Nakagama
- Department of Parasitology, Graduate Scholl of Medicine, Osaka City University, Osaka, Japan
| | - Yasutoshi Kido
- Department of Parasitology, Graduate Scholl of Medicine, Osaka City University, Osaka, Japan
| | - Eisuke Adachi
- Department of Infectious Diseases and Applied Immunology, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| |
Collapse
|
7
|
Konuma T, Kohara C, Watanabe E, Takahashi S, Ozawa G, Inomata K, Suzuki K, Mizukami M, Nagai E, Okabe M, Isobe M, Kato S, Oiwa-Monna M, Takahashi S, Tojo A. Impact of Intestinal Microbiota on Reconstitution of Circulating Monocyte, Dendritic Cell, and Natural Killer Cell Subsets in Adults Undergoing Single-Unit Cord Blood Transplantation. Biol Blood Marrow Transplant 2020; 26:e292-e297. [PMID: 32798658 DOI: 10.1016/j.bbmt.2020.08.009] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 08/05/2020] [Accepted: 08/06/2020] [Indexed: 02/02/2023]
Abstract
The intestinal microbiota plays a fundamental role in the development of host innate immune cells, such as monocytes, dendritic cells (DCs), and natural killer (NK) cells. We examined the association between intestinal microbiota and subsequent immune reconstitution of circulating monocyte, DC, and NK cell subsets in 38 adult patients undergoing single-unit cord blood transplantation (CBT). A higher diversity of intestinal microbiota at 1 month was significantly associated with higher counts of plasmacytoid DCs at 7 months after CBT, as measured by the Chao1 index. Principal coordinate analysis of unweighted UniFrac distances showed significant differences between higher and lower classical monocyte reconstitution at 7 months post-CBT. The families Neisseriaceae, Burkholderiaceae, Propionibacteriaceae, and Coriobacteriaceae were increased in higher classical monocyte reconstitution at 7 months post-CBT, whereas the family Bacteroidaceae was increased in lower classical monocyte reconstitution at 7 months post-CBT. These data show that intestinal microbiota composition affects immune reconstitution of classical monocyte and plasmacytoid DCs following single-unit CBT.
Collapse
Affiliation(s)
- Takaaki Konuma
- Department of Hematology/Oncology, Institute of Medical Science, The University of Tokyo, Tokyo, Japan.
| | - Chisato Kohara
- Department of Hematology/Oncology, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Eri Watanabe
- IMSUT Clinical Flow Cytometry Laboratory, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | | | - Genki Ozawa
- TechnoSuruga Laboratory Co, Ltd, Shizuoka, Japan
| | | | - Kei Suzuki
- TechnoSuruga Laboratory Co, Ltd, Shizuoka, Japan
| | - Motoko Mizukami
- Department of Laboratory Medicine, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Etsuko Nagai
- Department of Laboratory Medicine, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Motohito Okabe
- Department of Hematology/Oncology, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Masamichi Isobe
- Department of Hematology/Oncology, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Seiko Kato
- Department of Hematology/Oncology, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Maki Oiwa-Monna
- Department of Hematology/Oncology, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Satoshi Takahashi
- Department of Hematology/Oncology, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Arinobu Tojo
- Department of Hematology/Oncology, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| |
Collapse
|
8
|
Konuma T, Kohara C, Watanabe E, Takahashi S, Ozawa G, Suzuki K, Mizukami M, Nagai E, Jimbo K, Kaito Y, Isobe M, Kato S, Takahashi S, Chiba A, Miyake S, Tojo A. Reconstitution of Circulating Mucosal-Associated Invariant T Cells after Allogeneic Hematopoietic Cell Transplantation: Its Association with the Riboflavin Synthetic Pathway of Gut Microbiota in Cord Blood Transplant Recipients. J Immunol 2020; 204:1462-1473. [PMID: 32041784 DOI: 10.4049/jimmunol.1900681] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 01/02/2020] [Indexed: 11/19/2022]
Abstract
Mucosal-associated invariant T (MAIT) cells are a type of innate lymphocyte and recognize riboflavin (vitamin B2) synthesis products presented by MHC-related protein 1. We investigated long-term reconstitution of MAIT cells and its association with chronic graft-versus-host disease (cGVHD) in a cross-sectional cohort of 173 adult patients after allogeneic hematopoietic cell transplantation. According to donor source, the number of MAIT cells significantly correlated with time after cord blood transplantation (CBT) but not with time after bone marrow transplantation or peripheral blood stem cell transplantation. The number of MAIT cells was significantly lower in patients with cGVHD compared with patients without cGVHD. We also examined the association between MAIT cell reconstitution and gut microbiota as evaluated by 16S ribosomal sequencing of stool samples 1 mo post-CBT in 27 adult patients undergoing CBT. The diversity of gut microbiota was positively correlated with better MAIT cell reconstitution after CBT. Phylogenetic Investigation of Communities by Reconstruction of Unobserved States analysis indicated that amounts of ribB and ribA genes were significantly higher in the microbiomes of patients with subsequent MAIT cell reconstitution after CBT. In conclusion, long-term MAIT cell reconstitution is dependent on the type of donor source. Our data also unveiled an important role for the interaction of circulating MAIT cells with gut microbiota in humans.
Collapse
Affiliation(s)
- Takaaki Konuma
- Department of Hematology/Oncology, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan;
| | - Chisato Kohara
- Department of Hematology/Oncology, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
| | - Eri Watanabe
- Clinical Flow Cytometry Laboratory, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
| | | | - Genki Ozawa
- TechnoSuruga Laboratory Co., Ltd., Shizuoka 424-0065, Japan
| | - Kei Suzuki
- TechnoSuruga Laboratory Co., Ltd., Shizuoka 424-0065, Japan
| | - Motoko Mizukami
- Department of Laboratory Medicine, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan; and
| | - Etsuko Nagai
- Department of Laboratory Medicine, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan; and
| | - Koji Jimbo
- Department of Hematology/Oncology, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
| | - Yuta Kaito
- Department of Hematology/Oncology, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
| | - Masamichi Isobe
- Department of Hematology/Oncology, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
| | - Seiko Kato
- Department of Hematology/Oncology, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
| | - Satoshi Takahashi
- Department of Hematology/Oncology, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
| | - Asako Chiba
- Department of Immunology, Juntendo University School of Medicine, Tokyo 113-8421, Japan
| | - Sachiko Miyake
- Department of Immunology, Juntendo University School of Medicine, Tokyo 113-8421, Japan
| | - Arinobu Tojo
- Department of Hematology/Oncology, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
| |
Collapse
|
9
|
Jimbo K, Konuma T, Mizukami M, Nagai E, Oiwa-Monna M, Isobe M, Kato S, Takahashi S, Tojo A. Telomere length in CD4 + and CD8 + T cells among long-term survivors of adults after single cord blood transplantation. Eur J Haematol 2020; 104:509-511. [PMID: 31957893 DOI: 10.1111/ejh.13385] [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] [Received: 12/23/2019] [Revised: 01/10/2020] [Accepted: 01/11/2020] [Indexed: 11/26/2022]
Affiliation(s)
- Koji Jimbo
- Department of Hematology/Oncology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Takaaki Konuma
- Department of Hematology/Oncology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Motoko Mizukami
- Department of Laboratory Medicine, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Etsuko Nagai
- Department of Laboratory Medicine, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Maki Oiwa-Monna
- Department of Hematology/Oncology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Masamichi Isobe
- Department of Hematology/Oncology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Seiko Kato
- Department of Hematology/Oncology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Satoshi Takahashi
- Department of Hematology/Oncology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Arinobu Tojo
- Department of Hematology/Oncology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| |
Collapse
|
10
|
Hirose L, Hiramoto T, Tian Y, Kohara H, Kobayashi S, Nagai E, Denda T, Tanaka Y, Ota Y, Jiyuan L, Miyamoto S, Miura Y, Hijikata Y, Soda Y, Inoue T, Okahara N, Itoh T, Sasaki E, Tojo A, Uchimaru K, Tani K. A pilot study to establish human T-cell leukemia virus type 1 (HTLV-1) carrier model using common marmoset (Callithrix jacchus). J Med Primatol 2020; 49:86-94. [PMID: 31930552 DOI: 10.1111/jmp.12454] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 10/29/2019] [Accepted: 11/07/2019] [Indexed: 12/25/2022]
Abstract
BACKGROUND For the diagnosis and treatment of adult T-cell leukemia/lymphoma (ATLL) caused by human T-lymphotropic virus type 1 (HTLV-1) are required therapeutic modalities urgently. Non-human primate models for ATLL would provide a valuable information for clinical studies. We did a pilot study to establish an ATLL non-human primate model using common marmosets (Callithrix jacchus). METHODS We inoculated HTLV-1-producing MT-2 cells into 9-month-old marmosets, either intraperitoneally or intravenously. We next administrated MT-2 cells into 13-month-old marmosets under cyclosporine A (CsA) treatment to promote infection. HTLV-1 infection was determined by measuring HTLV-1 antibody titer in the common marmosets. RESULTS The HTLV-1 antibody titer increased in the intraperitoneally inoculated marmoset with or without CsA treatment, and it kept over five 5 years though proviral copy number (proviral load, PVL) remained low throughout the study. CONCLUSION We obtained HTLV-1 asymptomatic carriers of common marmosets by inoculating MT-2 cells.
Collapse
Affiliation(s)
- Lisa Hirose
- Project Division of ALA Advanced Medical Research, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Takafumi Hiramoto
- Project Division of ALA Advanced Medical Research, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Yamin Tian
- Project Division of ALA Advanced Medical Research, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Hiroshi Kohara
- Project Division of ALA Advanced Medical Research, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Seiichiro Kobayashi
- Division of Molecular Therapy, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Etsuko Nagai
- Department of Pathology, Research Hospital, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Tamami Denda
- Department of Pathology, Research Hospital, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Yukihisa Tanaka
- Department of Pathology, Research Hospital, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Yasunori Ota
- Department of Pathology, Research Hospital, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Liao Jiyuan
- Project Division of ALA Advanced Medical Research, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Shohei Miyamoto
- Project Division of ALA Advanced Medical Research, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Yoshie Miura
- Project Division of ALA Advanced Medical Research, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Yasuki Hijikata
- Project Division of ALA Advanced Medical Research, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Yasushi Soda
- Project Division of ALA Advanced Medical Research, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Takashi Inoue
- Central Institute for Experimental Animals, Kawasaki, Japan
| | - Norio Okahara
- Central Institute for Experimental Animals, Kawasaki, Japan
| | - Toshio Itoh
- Central Institute for Experimental Animals, Kawasaki, Japan
| | - Erika Sasaki
- Central Institute for Experimental Animals, Kawasaki, Japan
| | - Arinobu Tojo
- Division of Molecular Therapy, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Kaoru Uchimaru
- Department of Computational Biology and Medical Science, The Tokyo University, Tokyo, Japan
| | - Kenzaburo Tani
- Project Division of ALA Advanced Medical Research, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| |
Collapse
|
11
|
Konuma T, Kohara C, Watanabe E, Mizukami M, Nagai E, Kato S, Takahashi S, Tojo A. Circulating unconventional T-cell subsets during treatment with BCR-ABL1 tyrosine kinase inhibitors for Philadelphia chromosome-positive leukemia. Eur J Haematol 2019; 103:623-625. [PMID: 31512295 DOI: 10.1111/ejh.13328] [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] [Received: 07/28/2019] [Revised: 09/05/2019] [Accepted: 09/06/2019] [Indexed: 11/27/2022]
Affiliation(s)
- Takaaki Konuma
- Department of Hematology/Oncology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Chisato Kohara
- Department of Hematology/Oncology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Eri Watanabe
- Department of IMSUT Clinical Flow Cytometry Laboratory, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Motoko Mizukami
- Department of Laboratory Medicine, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Etsuko Nagai
- Department of Laboratory Medicine, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Seiko Kato
- Department of Hematology/Oncology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Satoshi Takahashi
- Department of Hematology/Oncology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Arinobu Tojo
- Department of Hematology/Oncology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| |
Collapse
|
12
|
Jimbo K, Konuma T, Watanabe E, Kohara C, Mizukami M, Nagai E, Oiwa-Monna M, Mizusawa M, Isobe M, Kato S, Takahashi S, Tojo A. T memory stem cells after allogeneic haematopoietic cell transplantation: unique long-term kinetics and influence of chronic graft-versus-host disease. Br J Haematol 2019; 186:866-878. [PMID: 31135974 DOI: 10.1111/bjh.15995] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Accepted: 04/11/2019] [Indexed: 12/21/2022]
Abstract
T memory stem cells (TSCMs) are a subset of primitive T cells capable of both self-renewal and differentiation into all subsets of memory and effector T cells. Therefore, TSCMs may play a role in immune reconstitution and graft-versus-host disease (GVHD) in patients receiving allogeneic haematopoietic cell transplantation (HCT). We conducted a cross-sectional study to evaluate the proportions, absolute counts, phenotypes and functions of TSCMs in 152 adult patients without disease recurrence at least 12 months after undergoing HCT. CD4+ TSCMs were negatively correlated with number of months after transplantation in HCT patients that received cord blood transplantation, but not in patients that received bone marrow transplantation or peripheral blood stem cell transplantation. The proportions and absolute counts of CD4+ TSCMs and expression levels of inducible co-stimulator (ICOS) in CD8+ TSCMs were significantly higher in patients with mild and moderate/severe cGVHD compared to patients without cGVHD. These data suggested that, more than 12 months after allogeneic HCT, the kinetics of CD4+ TSCMs were dependent on the type of donor source, and further that CD4+ TSCMs and ICOS levels in CD8+ TSCMs were associated with cGVHD.
Collapse
Affiliation(s)
- Koji Jimbo
- Department of Haematology/Oncology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Takaaki Konuma
- Department of Haematology/Oncology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Eri Watanabe
- Department of IMSUT Clinical Flow Cytometry Laboratory, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Chisato Kohara
- Department of Haematology/Oncology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Motoko Mizukami
- Department of Laboratory Medicine, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Etsuko Nagai
- Department of Laboratory Medicine, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Maki Oiwa-Monna
- Department of Haematology/Oncology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Mai Mizusawa
- Department of Haematology/Oncology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Masamichi Isobe
- Department of Haematology/Oncology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Seiko Kato
- Department of Haematology/Oncology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Satoshi Takahashi
- Department of Haematology/Oncology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Arinobu Tojo
- Department of Haematology/Oncology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| |
Collapse
|
13
|
Konuma T, Kohara C, Watanabe E, Mizukami M, Nagai E, Oiwa-Monna M, Tanoue S, Isobe M, Jimbo K, Kato S, Takahashi S, Tojo A. Circulating monocyte subsets in human chronic graft-versus-host disease. Bone Marrow Transplant 2018; 53:1532-1540. [DOI: 10.1038/s41409-018-0187-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 03/07/2018] [Accepted: 03/07/2018] [Indexed: 12/13/2022]
|
14
|
Konuma T, Kohara C, Watanabe E, Mizukami M, Nagai E, Tanoue S, Isobe M, Jimbo K, Kato S, Ohno N, Takahashi S, Tojo A. Monocyte subsets and their phenotypes during treatment with BCR-ABL1 tyrosine kinase inhibitors for Philadelphia chromosome-positive leukemia. Hematol Oncol 2018; 36:451-456. [DOI: 10.1002/hon.2497] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 01/04/2018] [Accepted: 01/05/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Takaaki Konuma
- Department of Hematology/Oncology, The Institute of Medical Science; The University of Tokyo; Tokyo Japan
| | - Chisato Kohara
- Department of Hematology/Oncology, The Institute of Medical Science; The University of Tokyo; Tokyo Japan
| | - Eri Watanabe
- Department of IMSUT Clinical Flow Cytometry Laboratory, The Institute of Medical Science; The University of Tokyo; Tokyo Japan
| | - Motoko Mizukami
- Department of Laboratory Medicine, The Institute of Medical Science; The University of Tokyo; Tokyo Japan
| | - Etsuko Nagai
- Department of Laboratory Medicine, The Institute of Medical Science; The University of Tokyo; Tokyo Japan
| | - Susumu Tanoue
- Department of Hematology/Oncology, The Institute of Medical Science; The University of Tokyo; Tokyo Japan
| | - Masamichi Isobe
- Department of Hematology/Oncology, The Institute of Medical Science; The University of Tokyo; Tokyo Japan
| | - Koji Jimbo
- Department of Hematology/Oncology, The Institute of Medical Science; The University of Tokyo; Tokyo Japan
| | - Seiko Kato
- Department of Hematology/Oncology, The Institute of Medical Science; The University of Tokyo; Tokyo Japan
| | - Nobuhiro Ohno
- Department of Hematology/Oncology, The Institute of Medical Science; The University of Tokyo; Tokyo Japan
| | - Satoshi Takahashi
- Department of Hematology/Oncology, The Institute of Medical Science; The University of Tokyo; Tokyo Japan
| | - Arinobu Tojo
- Department of Hematology/Oncology, The Institute of Medical Science; The University of Tokyo; Tokyo Japan
| |
Collapse
|
15
|
Konuma T, Kohara C, Watanabe E, Mizukami M, Nagai E, Oiwa-Monna M, Tanoue S, Isobe M, Kato S, Tojo A, Takahashi S. Cytokine Profiles of Pre-Engraftment Syndrome after Single-Unit Cord Blood Transplantation for Adult Patients. Biol Blood Marrow Transplant 2017; 23:1932-1938. [DOI: 10.1016/j.bbmt.2017.07.020] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Accepted: 07/16/2017] [Indexed: 10/19/2022]
|
16
|
Noshiro H, Yoda Y, Hiraki M, Kono H, Miyake S, Uchiyama A, Nagai E. Survival outcomes of 220 consecutive patients with three-staged thoracoscopic esophagectomy. Dis Esophagus 2016; 29:1090-1099. [PMID: 26541471 DOI: 10.1111/dote.12426] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Patients with thoracic esophageal cancer are often treated by minimally invasive esophagectomy. However, the long-term survival benefits of minimally invasive esophagectomy remain unclear. Two approaches are available for thoracoscopic surgery: one with the patient in the left lateral decubitus position (LLDP), and the other with the patient in the prone position (PP). We investigated the survival benefit of thoracoscopic esophagectomy according to the tumor stage and patient position during the thoracoscopic procedure. We reviewed the records of 220 consecutive patients with esophageal cancer treated from 1998 to 2012. In total, 146 and 74 patients were treated with thoracoscopic esophagectomy in the LLDP and PP, respectively. No patients were initially proposed to be candidates for esophagectomy by thoracotomy during the study period. Data collection was performed with a focus on survival and recurrent disease. Among all the 220 patients, the overall 5-year survival rates were 83.7%, 74.1%, 45.5%, 78.6%, 44.2%, 29.4% and 24.3% in the patients with pStage IA, IB, IIA, IIB, IIIA, IIIB and IIIC disease, respectively. Despite the greater number of dissected mediastinal lymph nodes in the PP procedure, there were no significant differences in the survival curves between the LLDP and PP procedures. The long-term results of thoracoscopic esophagectomy are comparable and acceptable. The PP procedure was not confirmed to offer a superior survival benefit to the LLDP procedure in this retrospective study.
Collapse
Affiliation(s)
- H Noshiro
- Department of Surgery, Saga University Faculty of Medicine, Saga, Japan
| | - Y Yoda
- Department of Surgery, Saga University Faculty of Medicine, Saga, Japan
| | - M Hiraki
- Department of Surgery, Saga University Faculty of Medicine, Saga, Japan
| | - H Kono
- Department of Surgery, Saga University Faculty of Medicine, Saga, Japan
| | - S Miyake
- Department of Surgery, Saga University Faculty of Medicine, Saga, Japan
| | - A Uchiyama
- Department of Surgery, JCHO Kyushu Hospital, Kitakyushu, Japan
| | - E Nagai
- Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| |
Collapse
|
17
|
Nagai E, Horiuchi K, Sakamoto A, Omi Y, Yoshida Y, Tokumitsu H, Sakurai M, Haniu K, Okamoto T. 99P Predicting no metastases to axillary lymph nodes beyond positive sentinel nodes in patients with breast cancer: a simple rule. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv519.48] [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
|
18
|
Sakamoto A, Okamoto T, Haniu K, Nagai E, Sakurai M, Tokumitsu H, Yoshida Y, Omi Y, Horiuchi K. 80P Correlation of immediate reconstruction with clinical outcome to locally advanced breast cancer. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv519.29] [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
|
19
|
Hasegawa M, Miyata K, Abe Y, Ishii T, Ishigami T, Ohtani K, Nagai E, Ohyama T, Umekawa Y, Nakabayashi S. 3-T MRI safety assessments of magnetic dental attachments and castable magnetic alloys. Dentomaxillofac Radiol 2015; 44:20150011. [PMID: 25785821 DOI: 10.1259/dmfr.20150011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES To assess the safety of different magnetic dental attachments during 3-T MRI according to the American Society for Testing and Materials F2182-09 and F2052-06e1 standard testing methods and to develop a method to determine MRI compatibility by measuring magnetically induced torque. METHODS The temperature elevations, magnetically induced forces and torques of a ferromagnetic stainless steel keeper, a coping comprising a keeper and a cast magnetic alloy coping were measured on MRI systems. RESULTS The coping comprising a keeper demonstrated the maximum temperature increase (1.42 °C) for the whole-body-averaged specific absorption rate and was calculated as 2.1 W kg⁻¹ with the saline phantom. All deflection angles exceeded 45°. The cast magnetic alloy coping had the greatest deflection force (0.33 N) during 3-T MRI and torque (1.015 mN m) during 0.3-T MRI. CONCLUSIONS The tested devices showed minimal radiofrequency (RF)-induced heating in a 3-T MR environment, but the cast magnetic alloy coping showed a magnetically induced deflection force and torque approximately eight times that of the keepers. For safety, magnetic dental attachments should be inspected before and after MRI and large prostheses containing cast magnetic alloy should be removed. Although magnetic dental attachments may pose no great risk of RF-induced heating or magnetically induced torque during 3-T MRI, their magnetically induced deflection forces tended to exceed acceptable limits. Therefore, the inspection of such devices before and after MRI is important for patient safety.
Collapse
Affiliation(s)
- M Hasegawa
- 1 Department of Partial Denture Prosthodontics, Nihon University School of Dentistry, Tokyo, Japan
| | - K Miyata
- 1 Department of Partial Denture Prosthodontics, Nihon University School of Dentistry, Tokyo, Japan
| | - Y Abe
- 1 Department of Partial Denture Prosthodontics, Nihon University School of Dentistry, Tokyo, Japan
| | - T Ishii
- 1 Department of Partial Denture Prosthodontics, Nihon University School of Dentistry, Tokyo, Japan
| | - T Ishigami
- 1 Department of Partial Denture Prosthodontics, Nihon University School of Dentistry, Tokyo, Japan.,2 Division of Clinical Research, Nihon University School of Dentistry, Tokyo, Japan
| | - K Ohtani
- 1 Department of Partial Denture Prosthodontics, Nihon University School of Dentistry, Tokyo, Japan.,2 Division of Clinical Research, Nihon University School of Dentistry, Tokyo, Japan
| | - E Nagai
- 1 Department of Partial Denture Prosthodontics, Nihon University School of Dentistry, Tokyo, Japan.,2 Division of Clinical Research, Nihon University School of Dentistry, Tokyo, Japan
| | - T Ohyama
- 1 Department of Partial Denture Prosthodontics, Nihon University School of Dentistry, Tokyo, Japan.,2 Division of Clinical Research, Nihon University School of Dentistry, Tokyo, Japan
| | - Y Umekawa
- 1 Department of Partial Denture Prosthodontics, Nihon University School of Dentistry, Tokyo, Japan.,2 Division of Clinical Research, Nihon University School of Dentistry, Tokyo, Japan
| | - S Nakabayashi
- 1 Department of Partial Denture Prosthodontics, Nihon University School of Dentistry, Tokyo, Japan.,2 Division of Clinical Research, Nihon University School of Dentistry, Tokyo, Japan
| |
Collapse
|
20
|
Maeda A, Miyagawa JI, Miuchi M, Nagai E, Konishi K, Matsuo T, Tokuda M, Kusunoki Y, Ochi H, Murai K, Katsuno T, Hamaguchi T, Harano Y, Namba M. Effects of the naturally-occurring disaccharides, palatinose and sucrose, on incretin secretion in healthy non-obese subjects. J Diabetes Investig 2013; 4:281-6. [PMID: 24843667 PMCID: PMC4015665 DOI: 10.1111/jdi.12045] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2012] [Revised: 11/08/2012] [Accepted: 11/15/2012] [Indexed: 12/24/2022] Open
Abstract
Aims/Introduction Incretins might play some pathophysiological role in glucose metabolism in diabetes and obesity; it is not clear whether or not the amount and the pattern of incretin secretion vary with different types of sugars. To evaluate the effect of two types of disaccharides on glucose metabolism and the kinetics of incretin secretion, plasma levels were measured after palatinose or sucrose ingestion in non‐obese healthy participants. Materials and Methods The study was carried out on healthy participants who were given a solution containing 50 g of palatinose or sucrose for ingestion. Blood samples were obtained before loading and after ingestion. Insulin, glucagon and incretins hormones were measured by the enzyme‐linked immunosorbent assay method. Results When the data were compared between palatinose and sucrose ingestion, both plasma glucose values at 15, 30 and 60 min, and plasma insulin values at 15 and 30 min after palatinose loading were significantly lower than those after sucrose loading. Plasma levels of total glucose‐dependent insulinotropic polypeptide at 15–90 min after palatinose loading were significantly lower than those after sucrose loading. Plasma levels of total and active glucagon‐like peptide‐1 at 90 min and the area under the curve (60–120 min) of the total glucagon‐like peptide‐1 were significantly higher with palatinose‐loading than with sucrose loading. Conclusion Compared with sucrose, palatinose appears to have a more favorable effect on glucose metabolism and protection of pancreatic islets as a result of less hyperglycemic and hyperinsulinemic potency.
Collapse
Affiliation(s)
- Aya Maeda
- Division of Diabetes and Metabolism, Department of Internal Medicine Hyogo College of Medicine Nishinomiya Hyogo Japan
| | - Jun-Ichiro Miyagawa
- Division of Diabetes and Metabolism, Department of Internal Medicine Hyogo College of Medicine Nishinomiya Hyogo Japan
| | - Masayuki Miuchi
- Division of Diabetes and Metabolism, Department of Internal Medicine Hyogo College of Medicine Nishinomiya Hyogo Japan
| | - Etsuko Nagai
- Division of Diabetes and Metabolism, Department of Internal Medicine Hyogo College of Medicine Nishinomiya Hyogo Japan
| | - Kosuke Konishi
- Division of Diabetes and Metabolism, Department of Internal Medicine Hyogo College of Medicine Nishinomiya Hyogo Japan
| | - Toshihiro Matsuo
- Division of Diabetes and Metabolism, Department of Internal Medicine Hyogo College of Medicine Nishinomiya Hyogo Japan
| | - Masaru Tokuda
- Division of Diabetes and Metabolism, Department of Internal Medicine Hyogo College of Medicine Nishinomiya Hyogo Japan
| | - Yoshiki Kusunoki
- Division of Diabetes and Metabolism, Department of Internal Medicine Hyogo College of Medicine Nishinomiya Hyogo Japan
| | - Humihiro Ochi
- Division of Diabetes and Metabolism, Department of Internal Medicine Hyogo College of Medicine Nishinomiya Hyogo Japan
| | - Kazuki Murai
- Division of Diabetes and Metabolism, Department of Internal Medicine Hyogo College of Medicine Nishinomiya Hyogo Japan
| | - Tomoyuki Katsuno
- Division of Diabetes and Metabolism, Department of Internal Medicine Hyogo College of Medicine Nishinomiya Hyogo Japan
| | - Tomoya Hamaguchi
- Division of Innovative Diabetes Treatment Hyogo College of Medicine Nishinomiya Hyogo Japan
| | - Yutaka Harano
- Niseikai Center for Lifestyle-Related Diseases Osaka Japan
| | - Mitsuyoshi Namba
- Division of Diabetes and Metabolism, Department of Internal Medicine Hyogo College of Medicine Nishinomiya Hyogo Japan
| |
Collapse
|
21
|
Katsuno T, Watanabe N, Nagai E, Okazaki K, Yokoyama A, Hamaguchi T, Miyagawa J, Namba M. Comparison of efficacy of concomitant administration of mitiglinide with voglibose and double dose of mitiglinide in patients with type 2 diabetes mellitus. J Diabetes Investig 2011; 2:204-9. [PMID: 24843485 PMCID: PMC4014920 DOI: 10.1111/j.2040-1124.2010.00082.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
UNLABELLED Aims/Introduction: When monotherapy with an oral hypoglycemic agent (OHA) is not sufficiently effective for blood glucose control, combination therapy with OHA having different mechanisms of action might be indicated. MATERIALS AND METHODS In the present study, we compared the efficacy of two options in type 2 diabetes mellitus patients whose blood glucose had not been well controlled with mitiglinide (30 mg/day) alone. A total of 20 patients were included in the study and divided into two groups: group A, in which mitiglinide was given concomitantly with the α-glucosidase inhibitor voglibose (0.6 mg/day); and group B, in which a double dose of mitiglinide was given (60 mg/day). Twelve weeks after changing the medication, HbA1c, glycoalbumin and 1,5-anhydroglucitol (1,5-AG) were measured. In addition, at weeks 0 and 12, a meal tolerance test was carried out, and plasma glucose, insulin, glucagon, active glucagon-like peptide-1 (GLP-1) and total glucose-dependent insulinotropic polypeptide levels were measured. RESULTS The plasma level of 1,5-AG improved in both groups at week 12. In group A, the plasma insulin level significantly decreased and the plasma active GLP-1 level significantly increased during the meal tolerance test at week 12; thus, bodyweight significantly decreased only in group A. CONCLUSIONS Our findings suggested that concomitant administration of mitiglinide with voglibose could achieve better glycemic control, particularly in the postprandial period, without bodyweight gain and might have beneficial effects in type 2 diabetic patients at risk of macrovascular complications. (J Diabetes Invest, doi: 10.1111/j.2040-1124.2010.0082.x, 2011).
Collapse
Affiliation(s)
| | - Nobuaki Watanabe
- Innovative Diabetes Treatment, Department of Internal Medicine, Hyogo College of Medicine
| | | | - Kazumi Okazaki
- Innovative Diabetes Treatment, Department of Internal Medicine, Hyogo College of Medicine
| | - Ariko Yokoyama
- Innovative Diabetes Treatment, Department of Internal Medicine, Hyogo College of Medicine
| | | | | | | |
Collapse
|
22
|
Nagai E, Katsuno T, Miyagawa JI, Konishi K, Miuchi M, Ochi F, Kusunoki Y, Tokuda M, Murai K, Hamaguchi T, Namba M. Incretin responses to oral glucose load in Japanese non-obese healthy subjects. Diabetes Ther 2011; 2:20-8. [PMID: 22127766 PMCID: PMC3136845 DOI: 10.1007/s13300-010-0017-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2010] [Indexed: 12/30/2022] Open
Abstract
INTRODUCTION Recently, incretin-related therapy has been developed for the new treatment of diabetes mellitus; however, incretin response to glucose ingestion in normal glucose tolerant (NGT) subjects has not been clarified in detail with special reference to the role of incretin hormones, glucagon, and a family history of diabetes. METHODS We conducted a 75 g oral glucose tolerance test in 30 NGT subjects. RESULTS The total glucose-dependent insulinotropic peptide (GIP)-AUC(0-120) (area under the curve over a period of 0-120 minutes) was correlated with immunoreactive insulin (IRI)-AUC(0-120) (P<0.05), insulinogenic index (II; P<0.05), ΔIRI between 0 and 120 minutes (P<0.05). Active glucagon-like peptide-1 (GLP-1) AUC(0-120) was correlated inversely both with Δ glucose between 0 and 30 minutes (P<0.01) and with Δ immunoreactive glucagon between 0 and 30 minutes (P<0.05). Δ Total GIP between 0 and 15 minutes (P<0.01), Δ total GIP between 0 and 30 minutes (P<0.05), and the total GIP-AUC(0-120) (P<0.05) in the subjects with a family history of type 2 diabetes were significantly higher than those in the subjects without a family history. CONCLUSION These results suggest that GIP possibly facilitates insulin secretion in response to oral glucose load directly and active GLP-1 may exert the glucoregulatory action via the suppression of glucagon secretion in NGT subjects. Notably, the subjects with a family history of diabetes exert significantly higher GIP response in the early phase of glucose load compared with those without a family history.
Collapse
Affiliation(s)
- Etsuko Nagai
- Division of Diabetes and Metabolism, Department of Internal Medicine, Hyogo College of Medicine, 1-1, Mukogawa-cho, Nishinomiya, Hyogo, 663-8501, Japan,
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
23
|
Nagai E, Katsuno T, Miyagawa JI, Konishi K, Miuchi M, Ochi F, Kusunoki Y, Tokuda M, Murai K, Hamaguchi T, Namba M. Effects of miglitol in combination with intensive insulin therapy on blood glucose control with special reference to incretin responses in type 1 diabetes mellitus. Endocr J 2011; 58:869-77. [PMID: 21869539 DOI: 10.1507/endocrj.k11e-129] [Citation(s) in RCA: 22] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
To determine whether miglitol administration improves glycemic control and reduces the frequency of hypoglycemia in type 1 diabetes mellitus (T1DM) patients treated with intensive insulin therapy, we analyzed the effect of miglitol on daily insulin doses, body weight, hypoglycemia, and incretin hormone responses during meal tolerance tests (MTT). Eleven T1DM subjects (21-77 years) undergoing intensive insulin therapy, took 25 mg (weeks 0-4) and 50 mg miglitol (weeks 4-12) thrice daily, immediately before meals. At weeks 0 and 12, 9 of 11 subjects underwent MTT. In present study, mean HbA1c, glycoalbumin, and 1,5-anhydroglucitol levels were significantly improved. The blood glucose level 1 h after dinner was significantly lower at week 12 than at week 0 (p = 0.008). From week 0 to 12, there was a significant decrease in the body mass index (BMI; p = 0.0051), frequency of preprandial hypoglycemic events (p = 0.012), and daily bolus insulin dosage (p = 0.018). The change in active glucagon-like peptide-1 (GLP-1) at 120 min significantly increased at week 12 (p = 0.015). The change in total glucose-dependent insulinotropic peptide (GIP) significantly decreased in the MTT at week 12. These results demonstrate that addition of miglitol on intensive insulin therapy in T1DM patients has beneficial effects on reducing BMI, bolus and total insulin dosage, and frequency of preprandial hypoglycemic events. MTT findings suggest that this combination therapy improves blood glucose control by delaying carbohydrate absorption and modifying the responses of incretins, GIP, and GLP-1.
Collapse
Affiliation(s)
- Etsuko Nagai
- Division of Diabetes and Metabolism, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Japan.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
24
|
Onimaru M, Ohuchida K, Egami T, Mizumoto K, Nagai E, Cui L, Toma H, Matsumoto K, Hashizume M, Tanaka M. Gemcitabine synergistically enhances the effect of adenovirus gene therapy through activation of the CMV promoter in pancreatic cancer cells. Cancer Gene Ther 2010; 17:541-9. [DOI: 10.1038/cgt.2010.9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
|
25
|
Konya H, Miuchi M, Konishi K, Nagai E, Ueyama T, Kusunoki Y, Kimura Y, Nakamura Y, Ishikawa T, Inokuchi C, Katsuno T, Hamaguchi T, Miyagawa J, Namba M. Pleiotropic effects of mitiglinide in type 2 diabetes mellitus. J Int Med Res 2010; 37:1904-12. [PMID: 20146890 DOI: 10.1177/147323000903700628] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
This study investigated the effects of mitiglinide in 16 patients with type 2 diabetes mellitus treated with 30 mg/day mitiglinide, divided into three doses given just before each meal, for approximately 12 months. A 450 kcal meal tolerance test was performed at baseline and after 3, 6 and 12 months, and levels of plasma glucose and immunoreactive insulin were measured. Various parameters of glucose metabolism and lipid metabolism, urinary albumin and markers of atherosclerosis, coagulation and fibrinolysis were also determined. Mitiglinide showed a rapid stimulatory effect on insulin secretion and reduced the levels of plasma glucose. The free fatty acid level significantly decreased at 60 min after the meal tolerance test. Mitiglinide also significantly lowered glycosylated haemoglobin and raised 1,5-anhydroglucitol after 6 months, and significantly decreased urinary albumin after 12 months. These data indicate that mitiglinide may have beneficial effects not only on glycaemic control but also on lipid metabolism and urinary albumin excretion, and may have a role in the prevention of the vascular complications of diabetes.
Collapse
Affiliation(s)
- H Konya
- Division of Diabetes and Metabolism, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan.
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
26
|
Ochi F, Katsuno T, Ishikawa T, Konya H, Nagai E, Konishi K, Nakamura Y, Hamaguchi T, Miyagawa JI, Namba M. [A fulminant type 1 diabetes with multiple organ failure at the onset of diabetes]. Nihon Naika Gakkai Zasshi 2008; 97:3043-3045. [PMID: 19209519 DOI: 10.2169/naika.97.3043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Affiliation(s)
- Fumihiro Ochi
- Division of Diabetes and Metabolism, Department of Internal Medicine, Hyogo College of Medicine, Hyogo
| | | | | | | | | | | | | | | | | | | |
Collapse
|
27
|
Ohuchida K, Mizumoto K, Miyasaka Y, Yu J, Cui L, Yamaguchi H, Toma H, Takahata S, Sato N, Nagai E, Yamaguchi K, Tsuneyoshi M, Tanaka M. Over-expression of S100A2 in pancreatic cancer correlates with progression and poor prognosis. J Pathol 2007; 213:275-82. [PMID: 17940995 DOI: 10.1002/path.2250] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Controversy exists regarding the clinical significance of S100A2 in the progression of tumours. In pancreatic cancer, little is known about the role of S100A2. The aim of this study was to clarify the clinical significance of S100A2 expression in pancreatic carcinogenesis. We microdissected invasive ductal carcinoma (IDC) cells from 22 lesions, pancreatic intraepithelial neoplasia (PanIN) cells from five lesions, intraductal papillary mucinous neoplasm (IPMN) cells from 38 lesions, pancreatitis-affected epithelial (PAE) cells from 16 lesions, and normal ductal cells from 18 normal pancreatic tissues. S100A2 expression in 14 pancreatic cancer cell lines, microdissected cells and formalin-fixed paraffin-embedded (FFPE) samples was examined by quantitative reverse transcription-polymerase chain reaction (qRT-PCR). Microdissection analyses revealed that IDC cells expressed higher levels of S100A2 than did IPMN, PAE or normal cells (all comparisons, p < 0.007). Cell lines from metastatic sites expressed higher levels of S100A2 than those from primary sites. PanIN cells expressed higher levels of S100A2 than normal cells (p = 0.018). IDC cells associated with poorly differentiated adenocarcinoma expressed higher levels of S100A2 than did IDC cells without poorly differentiated adenocarcinoma (p = 0.006). Analyses of FFPE samples revealed that levels of S100A2 were higher in samples from patients who survived < 1000 days after surgery than in those from patients who survived > 1000 days (p = 0.043). Immunohistochemical analysis was consistent with qRT-PCR. S100A2 may be a marker of tumour progression or prognosis in pancreatic carcinogenesis and pancreatic cancer.
Collapse
Affiliation(s)
- K Ohuchida
- Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
28
|
Ohuchida K, Mizumoto K, Fujita H, Yamaguchi H, Konomi H, Nagai E, Yamaguchi K, Tsuneyoshi M, Tanaka M. Sonic hedgehog is an early developmental marker of intraductal papillary mucinous neoplasms: clinical implications of mRNA levels in pancreatic juice. J Pathol 2006; 210:42-8. [PMID: 16794990 DOI: 10.1002/path.2019] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Intraductal papillary mucinous neoplasms (IPMNs) are common cystic tumours of the pancreas. Sonic hedgehog (SHH) is involved in gastric epithelial differentiation and pancreatic carcinogenesis. However, a comprehensive analysis of SHH expression in IPMN has not yet been performed. In the present study, one-step quantitative real-time reverse transcription-polymerase chain reaction with gene-specific priming was used to examine mRNA levels in various types of clinical samples. SHH expression in IPMN was measured and the possible association of gastric epithelial differentiation with development of IPMN was evaluated. In bulk tissue analyses (IPMNs, 11 pancreatic cancer, and 20 normal pancreatic tissues), IPMN expressed significantly higher levels of SHH than did normal pancreas (IPMN versus normal pancreas, p = 0.0025; pancreatic cancer versus normal pancreas, p = 0.0132), but SHH expression did not differ between IPMN and pancreatic cancer (p = 0.3409). In microdissection analyses (infiltrating ductal carcinoma cells from 20 sections, IPMN cells from 20 sections, pancreatitis-affected epithelial cells from 11 sections, and normal epithelial cells from 12 sections), IPMN cells expressed significantly higher levels of SHH than did cancer cells, normal cells, or pancreatitis-affected ductal cells (all comparisons, p < 0.008). Pancreatic juice analyses (20 samples from pancreatic cancers, 31 samples from IPMNs, and 27 samples from chronic pancreatitis) revealed that SHH expression differed significantly between IPMN juice and pancreatitis juice (p < 0.0001), and between cancer juice and pancreatitis juice (p = 0.0125). Receiver operating characteristic curve analyses revealed that SHH measurement in pancreatic juice was useful for discriminating IPMN from chronic pancreatitis (area under the curve = 0.915; 95% confidence interval: 0.796-0.976). The data suggest that overexpression of SHH is an early event in the development of IPMN and that SHH measurement in pancreatic juice may provide some advantages for the treatment or follow-up of a subset of patients with IPMN or chronic pancreatitis.
Collapse
Affiliation(s)
- K Ohuchida
- Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Fukuoka 812-8582, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
29
|
Ogura Y, Mizumoto K, Nagai E, Murakami M, Inadome N, Saimura M, Matsumoto K, Nakamura T, Maemondo M, Nukiwa T, Tanaka M. Peritumoral injection of adenovirus vector expressing NK4 combined with gemcitabine treatment suppresses growth and metastasis of human pancreatic cancer cells implanted orthotopically in nude mice and prolongs survival. Cancer Gene Ther 2006; 13:520-9. [PMID: 16341142 DOI: 10.1038/sj.cgt.7700921] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
NK4 or adenovirus vector expressing NK4 (Ad-NK4) can act bifunctionally as a hepatocyte growth factor antagonist and angiogenesis inhibitor and has potential value in cancer therapy. The aim of this study was to evaluate the therapeutic efficacy of Ad-NK4 in combination with gemcitabine (GEM) against pancreatic cancer. In vitro study showed a strong antiproliferative effect of GEM and a potent anti-invasive effect of Ad-NK4 against pancreatic cancer cells. In in vivo experiments, SUIT-2 human pancreatic cancer cells were implanted into the pancreas of nude mice. Mice were treated with Ad-NK4 by injection into the peritumoral region of the pancreas on day 5 after implantation followed by weekly i.p. injections of GEM. On day 28 after implantation, pancreatic tumor volume was significantly smaller than that in mice treated with Ad-LacZ, Ad-NK4 alone, or GEM alone. Furthermore, combination therapy completely suppressed peritoneal dissemination and liver metastases, leading to significantly increased survival. Histologic and immunohistochemical assays of primary tumors indicated that combination therapy prohibited both cell proliferation and angiogenesis, resulting in high levels of apoptosis. These results suggest that peritumoral injection of Ad-NK4 plus GEM is a potent combination therapy for pancreatic cancer.
Collapse
Affiliation(s)
- Y Ogura
- Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
30
|
Takasuna K, Hagiwara T, Watanabe K, Onose S, Yoshida S, Kumazawa E, Nagai E, Kamataki T. Optimal antidiarrhea treatment for antitumor agent irinotecan hydrochloride (CPT-11)-induced delayed diarrhea. Cancer Chemother Pharmacol 2006; 58:494-503. [PMID: 16437251 DOI: 10.1007/s00280-006-0187-8] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2005] [Accepted: 12/28/2005] [Indexed: 10/25/2022]
Abstract
PURPOSE An antitumor camptothecin derivative CPT-11 has proven a broad spectrum of solid tumor malignancy, but its severe diarrhea has often limited its more widespread use. We have demonstrated from a rat model that intestinal beta-glucuronidase may play a key role in the development of CPT-11-induced delayed diarrhea by the deconjugation of the luminal SN-38 glucuronide, and the elimination of the intestinal microflora by antibiotics or dosing of TJ-14, a Kampo medicine that contains beta-glucuronidase inhibitor baicalin, exerted a protective effect. In the present study, we assessed the efficacy of several potential treatments in our rat model to clarify which is the most promising treatment for CPT-11-induced delayed diarrhea. METHODS AND RESULTS Oral dosing (twice daily from days -1 to 4) of streptomycin 20 mg/kg and penicillin 10 mg/kg (Str/Pen), neomycin 20 mg/kg and bacitracin 10 mg/kg (Neo/Bac), both of which inhibited almost completely the fecal beta-glucuronidase activity, or TJ-14 1,000 mg/kg improved the decrease in body weight and the delayed diarrhea symptoms induced by CPT-11 (60 mg/kg i.v. from days 1 to 4) to a similar extent. The efficacy was less but significant in activated charcoal (1,000 mg/kg p.o. twice daily from days -1 to 4). In a separate experiment using rats bearing breast cancer (Walker 256-TC), TJ-14, Neo/Bac, and charcoal at the same dose regimen improved CPT-11-induced intestinal toxicity without reducing CPT-11's antitumor activity. In contrast, oral dosing (twice a day) of cyclosporin A (50 mg/kg), a P-glycoprotein and cMOAT/MRP2 inhibitor or valproic acid (200 mg/kg), a UDP-glucuronosyltranferase inhibitor, exacerbated the intestinal toxicity without modifying CPT-11's antitumor activity. CONCLUSIONS The result clearly demonstrated the ability of Neo/Bac, Str/Pen, and TJ-14, less but significant ability of activated charcoal, to ameliorate CPT-11-induced delayed-onset diarrhea, suggesting the treatments decreasing the exposure of the intestines to the luminal SN-38 are valuable for improvement of CPT-11-induced intestinal toxicity. In contrast, the treatments affecting the biliary excretion of CPT-11 and its metabolites might have undesirable results.
Collapse
Affiliation(s)
- K Takasuna
- New Product Research Laboratories II, Daiichi Pharmaceutical Co., Ltd., 16-13 Kita-kasai 1-chome, Edogawa-ku, 134-8630, Tokyo, Japan.
| | | | | | | | | | | | | | | |
Collapse
|
31
|
Noshiro H, Nagai E, Shimizu S, Uchiyama A, Tanaka M. Laparoscopically assisted distal gastrectomy with standard radical lymph node dissection for gastric cancer. Surg Endosc 2005; 19:1592-6. [PMID: 16247578 DOI: 10.1007/s00464-005-0175-9] [Citation(s) in RCA: 104] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2005] [Accepted: 06/16/2005] [Indexed: 12/25/2022]
Abstract
BACKGROUND Laparoscopically assisted distal gastrectomy (LADG) with limited lymph node dissection (D1+alpha) has been used to treat a subset of patients with early gastric cancer. Technical advances have expanded indications for LADG to more advanced gastric cancers. However, little data are available on the feasibility or advantages of LADG with standard radical D2 lymph node dissection for patients with gastric cancer. METHODS This study reviewed the clinical features of 37 patients who underwent LADG with D2 lymph node dissection for preoperatively diagnosed gastric carcinoma, then compared the results with the features of 31 patients who underwent conventional open distal gastrectomy (ODG) with D2 lymph node dissection. RESULTS The laparoscopic procedure was not converted to laparotomy in any patient. There was no operative mortality and no serious morbidity among the patients who underwent LADG with D2 lymph node dissection. As compared with the ODG group, the LADG group had less operative blood loss (p < 0.001), earlier recovery of bowel activity (p = 0.012), and a shorter duration of fever after surgery (p = 0.015), despite the longer operation time (p = 0.007). CONCLUSIONS According to this study, LADG with D2 lymph node dissection is feasible and provides several advantages similar to those of limited lymph node dissection (D1+alpha). Depending on surgeons' technical proficiency, LADG can be used with standard radical lymph node dissection for patients with gastric cancers.
Collapse
Affiliation(s)
- H Noshiro
- Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidash, Higashi-ku, Fukuoka, 812-8582, Japan.
| | | | | | | | | |
Collapse
|
32
|
Abstract
BACKGROUND/AIMS The purpose of this study was to evaluate the clinical utility of laparoscopic surgery for gastric submucosal tumor. METHODS The records of 11 patients who underwent laparoscopic wedge resection (LR group) for gastric submucosal tumors were reviewed and compared with those of 8 patients who underwent open surgery (OS group). RESULTS Mean operation time was 145 +/- 43 min in the LR group and 127 +/- 33 min in the OS group (p = 0.301). Mean blood loss was 97 +/- 107 and 107 +/- 47 g, respectively (p = 0.387). Patients in the LR group began walking 1.4 +/- 0.7 days after surgery, which was significantly earlier than those in the OS group (2.7 +/- 1.3 days, p = 0.021). The first flatus (1.5 +/- 0.5 vs. 3.1 +/- 0.6 days, respectively, p = 0.0004) and resumption of oral food intake (3.0 +/- 1.7 vs. 4.3 +/- 0.9 days, respectively, p = 0.020) were also earlier in the LR group. White blood cell count on the first postoperative day was lower (7,000 +/- 2,100 vs. 11,900 +/- 3,580/mm(3), respectively, p = 0.004) in the LR group than in the OS group, and the duration of fever (>38.0 degrees C; 0.1 +/- 0.3 vs. 0.9 +/- 0.8 days, respectively, p = 0.014) and the period of postoperative hospitalization (13.2 +/- 3.7 vs. 20.8 +/- 6.1 days, respectively, p = 0.014) were significantly shorter in the LR group than in the OS group. No complications occurred in either group. CONCLUSION Laparoscopic surgery was superior to open surgery in terms of postoperative recovery time with comparable operation time and blood loss. Laparoscopic wedge resection is a promising surgical alternative for the treatment of gastric submucosal tumors.
Collapse
Affiliation(s)
- S Shimizu
- Department of Endoscopic Diagnostics and Therapeutics, Kyushu University Faculty of Medicine, Fukuoka, Japan.
| | | | | | | | | | | |
Collapse
|
33
|
Kanehisa N, Xie Y, Nagai E, Fujii M, Nakao Y, Kai Y. Two dinuclear nickel complexes with different N 3ligand binding type. Acta Crystallogr A 2002. [DOI: 10.1107/s0108767302090293] [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: 11/10/2022] Open
|
34
|
Tanaka H, Nagai E, Murata H, Tsubone T, Shirakura Y, Sugiyama T, Taguchi T, Kawai S. Involvement of bone morphogenic protein-2 (BMP-2) in the pathological ossification process of the spinal ligament. Rheumatology (Oxford) 2001; 40:1163-8. [PMID: 11600747 DOI: 10.1093/rheumatology/40.10.1163] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVE To investigate the function of bone morphogenic protein-2 (BMP-2) in the ossification of the spinal ligament (OSL). METHODS Total RNA was prepared from the cultured spinal ligament cells from patients with OSL and analysed by reverse transcription-polymerase chain reaction using specific primers for BMP-2. BMP-2 mRNA expression in ligament tissues was examined by in situ hybridization. Spinal ligament cells from patients without OSL were treated with BMP-2 and examined for alkaline phosphatase activity. RESULTS Expression of the BMP-2 gene was detected in cultured spinal ligament cells. In ligament tissues, BMP-2 mRNA was present in the chondrocyte-like cells in the fibrocartilage zone. Exogenous BMP-2 increased alkaline phosphatase activity in spinal ligament cells from patients without OSL. CONCLUSION The BMP-2 gene is expressed in the spinal ligaments of OSL patients, and exogenous BMP-2 stimulates osteogenic differentiation of spinal ligament cells. The expression of BMP-2 in the spinal ligaments could be a clue in elucidating how heterotrophic osteogenesis develops in ligament tissue.
Collapse
Affiliation(s)
- H Tanaka
- Department of Orthopedic Surgery, Yamaguchi University School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi 755-8505, Japan
| | | | | | | | | | | | | | | |
Collapse
|
35
|
Shono M, Sato N, Mizumoto K, Minamishima YA, Nakamura M, Maehara N, Urashima T, Saimura M, Qian L, Nishio S, Nagai E, Tanaka M. Effect of serum depletion on centrosome overduplication and death of human pancreatic cancer cells after exposure to radiation. Cancer Lett 2001; 170:81-9. [PMID: 11448538 DOI: 10.1016/s0304-3835(01)00533-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The tumor microenvironment is one of the key factors affecting the cellular response to radiation; however, the influence of serum concentration on tumor radiosensitivity remains poorly understood. We recently discovered that gamma-irradiation of tumor cells causes centrosome overduplication, which may lead to lethal nuclear fragmentation through the establishment of multipolar mitotic spindles. In the present study, we investigated the effect of serum depletion on radiation-induced cell death in relation to the centrosome dynamics in human pancreatic cancer cells. Exposure of Capan-1 cells to gamma-irradiation resulted in a time-dependent increase in cells containing multiple centrosomes in association with the appearance of mitotic cell death. Treatment of irradiated cells with serum depletion drastically accelerated centrosome overduplication and the formation of multipolar spindles, resulting in increased nuclear fragmentation and cell death. Cell cycle analysis of irradiated cultures revealed that the reduced serum level increased the population of cells arrested in the G2/M phase, which might be responsible for the abnormal centrosome accumulation. These findings suggest that serum concentration can influence radiation-induced cell killing through modulating cell cycle progression and possibly centrosome overduplication.
Collapse
Affiliation(s)
- M Shono
- Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, 812-8582, Fukuoka, Japan
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Yamaguchi K, Kishinaka M, Nagai E, Nakano K, Ohtsuka T, Chijiwa K, Tanaka M. Pancreatoduodenectomy for pancreatic head carcinoma with or without pylorus preservation. Hepatogastroenterology 2001; 48:1479-85. [PMID: 11677991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
BACKGROUND/AIMS With the concept of less invasive surgery, PpPD (pylorus-preserving pancreatoduodenectomy) has taken the place of conventional Whipple pancreatoduodenectomy (Whipple) as a standard operation for pancreatic head carcinoma. The aim of this paper is to compare early and late postoperative results of PpPD and Whipple for pancreatic head carcinoma. METHODOLOGY Postoperative clinical follow-up data and outcome of 50 Japanese patients with pancreatic head carcinoma who underwent pancreatoduodenectomy with or without pylorus preservation were reviewed to scrutinize the demerits and merits of the pylorus preservation. RESULTS Preoperative and postoperative serum chemistry was not different between the two groups. Mean operation time of the Whipple group was 517 minutes, which was significantly shorter than 624 minutes of the PpPD group (P = 0.0006). Cumulative stage was not different between the two groups. Cumulative curability of the PpPD group was superior to the Whipple group; of the 27 patients with Whipple, A in 4, B in 5 and C in 18, while of the 23 patients with PpPD, A in 12, B in 2 and C in 9 (P = 0.0182). Gastric tube was removed on POD 6.0 in the Whipple group, while on POD 39 in the PpPD group (P < 0.0001). Oral intake was started on POD 14.0 in the Whipple group, while on POD 28.3 in the PpPD group (P = 0.0018). Discharge was on POD 57.8 in the Whipple group, while POD 86.9 in the PpPD group (P = 0.0023). At the time of discharge and postoperative 6, 12, and 18 months, body weight loss from the preoperative level was 1kg smaller in the PpPD group than in the Whipple group. 1-year and 3-year survival rates of the Whipple group was 53.8% and 15.8%, while 62.8% and 19.6% of the PpPD group, showing no significant difference. CONCLUSIONS These data show that delayed gastric emptying is evident in the PpPD group, resulting in longer hospital stay, while long-term body weight loss is smaller in this group. The clinical outcome is similar between the two groups. PpPD can be accepted as a standard operation for pancreatic head carcinoma.
Collapse
Affiliation(s)
- K Yamaguchi
- Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-82, Japan.
| | | | | | | | | | | | | |
Collapse
|
37
|
Shono M, Sato N, Mizumoto K, Maehara N, Nakamura M, Nagai E, Tanaka M. Stepwise progression of centrosome defects associated with local tumor growth and metastatic process of human pancreatic carcinoma cells transplanted orthotopically into nude mice. J Transl Med 2001; 81:945-52. [PMID: 11454983 DOI: 10.1038/labinvest.3780306] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022] Open
Abstract
Recent evidence indicates that loss of centrosome integrity may be a major cause of genetic instability underlying various human cancers. The aim of this study was to define the role of centrosome defects during the in vivo tumor progression of pancreatic carcinoma using an orthotopic implantation model. Injection of Suit-2 human pancreatic cancer cells into the pancreata of nude mice reproduced the pattern of local tumor growth and distant metastasis observed in humans. Pancreatic xenografts, peritoneal disseminations, and hepatic metastases were harvested, and tumor cells were examined for centrosomes by immunofluorescence microscopy. Centrosome abnormalities, characterized by increased numbers of centrosomes, were detected in only a small fraction of parental Suit-2 cells in culture, whereas the frequency was markedly increased in cells isolated from the pancreatic xenografts. Abnormal centrosome numbers were found at higher frequencies in metastatic foci than in pancreatic xenografts. A significant positive correlation existed between the fraction of cells with multiple centrosomes and that with multipolar mitotic spindles, suggesting a functional involvement of aberrant centrosomes in spindle disorganization and chromosome missegregation. In addition, the increased frequency of abnormal centrosomes was associated with an enhanced degree of chromosomal instability. These findings suggest a novel model of pancreatic tumor progression whereby a stepwise increase in the magnitude of centrosomal abnormalities confers an increased chance for aberrant mitotic events, thus accelerating genetic instability and causing the tumor to progress to a more advanced stage.
Collapse
Affiliation(s)
- M Shono
- Department of Surgery and OncologyGraduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | | | | | | | | | | | | |
Collapse
|
38
|
Furugaki K, Satoh H, Shinohara M, Saimura M, Nagai E, Yonemasu H, Kishikawa H. Benign pseudotumorous lesion (fibroangiomyomatous hyperplasia with elastosis) in the gallbladder. J Gastroenterol 2001; 36:504-7. [PMID: 11480797 DOI: 10.1007/s005350170076] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
We describe a rare case of a benign pseudotumorous lesion (fibroangiomyomatous hyperplasia with elastosis) in the gallbladder in a 44-year-old Japanese woman, and discuss the rarity of elastosis in the gallbladder. To our knowledge, this case may be the first report of a pseudotumorous lesion of the gallbladder with elastosis in Japan.
Collapse
Affiliation(s)
- K Furugaki
- Division of Surgery, Wakamatsu Municipal Hospital, Kitakyushu, Japan
| | | | | | | | | | | | | |
Collapse
|
39
|
Abstract
OBJECTIVES Telomerase is highly activated in a variety of malignant neoplasms including colon cancer. Among the major components of telomerase, human telomerase reverse transcriptase (hTERT) is thought to regulate telomerase activity. To assess the importance of telomerase for the diagnosis of colorectal cancer, we measured the expression of hTERT mRNA and telomerase activity in a large series of 140 colorectal cancers, 140 adjacent normal tissues, and 20 adenomas. METHODS The expression level of hTERT was measured quantitatively by competitive reverse transcriptase-polymerase chain reaction (RT-PCR), and telomerase activity was examined by telomeric repeat amplification protocol (TRAP) assay in the same samples. RESULTS The median expression level of hTERT mRNA in carcinomas was significantly higher than that in either adenomas or normal tissues. The median level of hTERT in adenomas was significantly higher than that in normal tissues. Telomerase activities in carcinomas were significantly higher than those in either adenomas or normal tissues. Telomerase activities in adenomas were also significantly higher than those in normal tissues. Furthermore, the relative expression levels of hTERT mRNA in adenomas and carcinomas were significantly correlated with the relative telomerase activities; the Spearman rank correlation was 0.53 (p = 0.021) and 0.18 (p = 0.031), respectively. CONCLUSIONS Our data suggest that determination of hTERT mRNA by competitive RT-PCR is superior in quantitative accuracy and sensitivity and would support the importance of telomerase activity for the diagnosis of colorectal cancer.
Collapse
Affiliation(s)
- H Niiyama
- Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | | | | | | | | | | | | | | |
Collapse
|
40
|
Nagai E, Otani K, Satoh Y, Suzuki S. Repair of denture base resin using woven metal and glass fiber: Effect of methylene chloride pretreatment. J Prosthet Dent 2001; 85:496-500. [PMID: 11357077 DOI: 10.1067/mpr.2001.115183] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
STATEMENT OF PROBLEM A durable repairing system for denture base fracture is desired to avoid recurrent fracture. Purpose. This study evaluated the strength and modulus of elasticity of repaired acrylic specimens reinforced with various processes. MATERIAL AND METHODS Transverse strength and modulus of elasticity of repaired acrylic denture base specimens were evaluated with a 3-point bending test and compared with a heat-polymerized control. Autopolymerizing acrylic resin was used with woven metal fiber and glass fiber with and without methylene chloride surface treatment (n = 6 per group). The specimens were cut in half and fixed in a metal mold to obtain a space for placing the repairing resin. A cavity was prepared when metal or glass fiber was used. All specimens were stored in 37 degrees C distilled water for 48 hours before the test. All data were statistically analyzed with 1-way ANOVA, and differences among groups were analyzed with Fisher test (P< or =.05). RESULTS The mean value of the transverse strength for the control was 87.2 MPa. The specimens repaired by glass fiber with methylene chloride surface treatment exhibited the highest transverse strength (96.8 MPa), which was significantly higher than that of the control (P< or =.05). The elastic modulus of the specimens repaired by glass fiber with methylene chloride surface treatment (4189.3 MPa) was significantly greater than that of the control (2683.7 MPa) at a 95% level of confidence. The values of transverse strength and elastic modulus were highest when the surface treatment was combined with a reinforcing glass fiber. CONCLUSION Reinforcement with glass fiber and methylene chloride pretreatment produced transverse strength and a modulus of elasticity higher than the control.
Collapse
Affiliation(s)
- E Nagai
- School of Dentistry, Nihon University, Tokyo, Japan
| | | | | | | |
Collapse
|
41
|
Chijiiwa K, Nakano K, Ueda J, Noshiro H, Nagai E, Yamaguchi K, Tanaka M. Surgical treatment of patients with T2 gallbladder carcinoma invading the subserosal layer. J Am Coll Surg 2001; 192:600-7. [PMID: 11333097 DOI: 10.1016/s1072-7515(01)00814-6] [Citation(s) in RCA: 123] [Impact Index Per Article: 5.3] [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: 12/31/2022]
Abstract
BACKGROUND Because T2 carcinoma of the gallbladder that invades perimuscular connective tissue without extension beyond serosa or into the liver has a hope for longterm survival, we attempted to clarify significant prognostic factors with respect to tumor- and surgery-related variables. STUDY DESIGN Of 65 patients with gallbladder carcinoma who had undergone surgical resection from 1983 to 1999, 28 had T2 carcinoma histologically proved. The significance of variables for survival was examined by the Kaplan-Meier method and log-rank test followed by multivariate analyses using Cox's proportional hazard model. RESULTS There were 17 patients with stage II carcinoma (T2 N0 M0), 6 with stage III (T2 N1 M0), and 5 with stage IVB. Lymph node metastasis was present in 11 patients (39%) and it reached to the peripancreatic head region (N2) in 5 of them. Lymphatic, venous, and perineural invasions were found in 68%, 57%, and 43%, respectively. With respect to tumor factors, the absence of perineural invasion (Odds ratio [OR] 16.77, 95% confidence interval [CI] 2.17-129.94, p = 0.0069), absence of lymph node metastasis (OR 15.00, 95% CI 2.08-108.33, p = 0.0073), and stage II (II versus III and IVB, OR 15.00, 95% CI 2.08-108.33, p = 0.0073) were significant factors related to good postoperative survival in the multivariate analysis. Surgical procedure (radical resection versus cholecystectomy, OR 4.31, 95% CI 1.34-13.82, p = 0.0142) and surgical margin (OR 7.41, 95% CI 2.19-25.13, p = 0.0013) were significant factors in the univariate analysis. Cancer-free surgical margins provided a significantly better survival (5-year survival rate, 62%); none with cancer-positive surgical margins survived for more than 27 months. In the multivariate analysis, surgical procedure was significant (OR 25.49, 95% CI 1.62-400.72, p = 0.021). Radical surgery, including extended cholecystectomy (resection of the gallbladder together with the gallbladder bed of the liver) and anatomic resection of liver segment 5 and of the lower part of segment 4, gave a significantly better 5-year survival rate than cholecystectomy (59% versus 17%). The 5-year survival rate after radical resection in patients with stage II was 75%; that in patients with stage III and IVB was 33%. CONCLUSIONS Results suggest that radical surgery is the treatment of choice for patients with T2 carcinoma of the gallbladder. The presence of lymph node metastasis, perineural invasion, or both suggests the necessity of additional treatment after radical surgery.
Collapse
Affiliation(s)
- K Chijiiwa
- Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | | | | | | | | | | | | |
Collapse
|
42
|
Sato N, Mizumoto K, Nakamura M, Maehara N, Minamishima YA, Nishio S, Nagai E, Tanaka M. Correlation between centrosome abnormalities and chromosomal instability in human pancreatic cancer cells. Cancer Genet Cytogenet 2001; 126:13-9. [PMID: 11343773 DOI: 10.1016/s0165-4608(00)00384-8] [Citation(s) in RCA: 75] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Chromosomal instability, characterized by abnormal numbers or structures of chromosomes, is a common feature of human cancers, but the mechanisms behind these changes are still unclear. Since centrosomes play a pivotal role in balanced chromosomal segregation during mitosis, we attempted to investigate the association between centrosome abnormalities and chromosomal instability in a large number of human pancreatic cancer cell lines. Immunofluorescence microscopy revealed centrosomes that were highly atypical with respect to their size, shape, and number in most cell lines. These abnormal centrosomes contributed to the assembly of multipolar spindles, resulting in defective mitosis and chromosome mis-segregation. Interestingly, a high frequency of centrosome defects inversely correlated with the growth rate of cells in culture. Fluorescence in situ hybridization revealed a dramatic variation of chromosome numbers in cell lines with the defective centrosome phenotype. Furthermore, a significant positive correlation existed between the level of centrosome defects and the level of chromosomal imbalances. These results indicate that centrosome abnormalities can lead to spindle disorganization and chromosome segregation errors, which may drive the accumulation of chromosomal alterations. Thus, defects in centrosome function may be an underlying cause of genetic instability in human pancreatic cancers.
Collapse
Affiliation(s)
- N Sato
- Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, 812-8582, Fukuoka, Japan
| | | | | | | | | | | | | | | |
Collapse
|
43
|
Mizumoto I, Ogawa Y, Niiyama H, Nagai E, Sato I, Urashima T, Matsumoto T, Iida M, Tanaka I. Possible role of telomerase activation in the multistep tumor progression of periampullary lesions in patients with familial adenomatous polyposis. Am J Gastroenterol 2001; 96:1261-5. [PMID: 11316180 DOI: 10.1111/j.1572-0241.2001.03710.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVES The role of telomerase in periampullary tumor progression in patients with familial adenomatous polyposis (FAP) was investigated. METHODS Relative telomerase activity was measured using a telomerease amplification protocol in periampullary biopsy specimens of normal mucosa and adenoma obtained from patients with FAP, and was compared with that of periampullary normal mucosa and cancer specimens from patients without FAP. RESULTS None of normal mucosa from the non-FAP patients showed a telomerase ladder. Telomerase was positively detected in three of seven normal mucosa (42.9%) and in five of seven adenoma from FAP patients (62.5%). In papillary cancer from the non-FAP patients, seven of nine tissue specimens (77.8%) showed positive activity. When semiquantitatively analyzed, the relative telomerase activity increased in accordance with the progression of the diseases. CONCLUSIONS Telomerase is activated even in normal mucosa of FAP patients, and the intensities of telomerase may reflect the malignant potential of periampullary neoplasms.
Collapse
Affiliation(s)
- I Mizumoto
- Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
44
|
Sato N, Maehara N, Mizumoto K, Nagai E, Yasoshima T, Hirata K, Tanaka M. Telomerase activity of cultured human pancreatic carcinoma cell lines correlates with their potential for migration and invasion. Cancer 2001. [PMID: 11169932 DOI: 10.1002/1097-0142(20010201)91:3<496::aid-cncr1028>3.0.co;2-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
BACKGROUND Despite the recent clinical finding that high telomerase activity is an unfavorable prognostic marker for various human malignant tumors, there has been no experimental evidence supporting the link between telomerase and tumor aggressiveness. In the current investigation, the authors examined the relation between telomerase activity and potential for biologic aggressiveness in human pancreatic carcinoma cells. METHODS Telomerase activity was measured in a poorly metastatic cell line HPC-3 and its highly metastatic variant HPC-3H4, as well as in many pancreatic carcinoma cell lines. Aggressive behavior of cancer cells was assessed by in vitro migration and invasion assay. RESULTS Compared with parental HPC-3, HPC-3H4 displayed higher telomerase activity, which was associated with a scattered phenotype and enhanced migration activity. Furthermore, the authors found that relative telomerase levels correlated well with both motility (P = 0.0041) and invasion (P = 0.0114) in 13 pancreatic carcinoma cell lines. There was, however, no significant association between telomerase activity and cell proliferation. When telomerase activity of KP-1N cells was inhibited by transfection with antisense oligonucleotides, their motility and invasion rates were significantly decreased. CONCLUSIONS The authors concluded that the magnitude of telomerase activation may reflect the potential for aggressive behavior within cancer cells. These findings support the clinical utility of telomerase activity as a prognostic indicator. Their results also suggest a therapeutic potential for telomerase inhibitors to prevent tumor invasion and possibly metastasis.
Collapse
Affiliation(s)
- N Sato
- Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | | | | | | | | | | | | |
Collapse
|
45
|
Ichiyama A, Xue HH, Oda T, Uchida C, Sugiyama T, Maeda-Nakai E, Sato K, Nagai E, Watanabe S, Takayama T. Oxalate synthesis in mammals: properties and subcellular distribution of serine:pyruvate/alanine:glyoxylate aminotransferase in the liver. Mol Urol 2001; 4:333-40. [PMID: 11156700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
Primary hyperoxaluria Type 1 (PH1) is caused by a functional deficiency of a liver enzyme, serine:pyruvate/alanine:glyoxylate aminotransferase (SPT/AGT), which catalyzes transamination between L-serine or l-alanine as an amino acid substrate and glyoxylate or pyruvate as an alpha-keto acid substrate. A high affinity for glyoxylate is a notable feature of this enzyme, suggesting a role in glyoxylate metabolism in vivo. Another conspicuous feature of SPT/AGT is its species-specific and food habit-dependent subcellular distribution. Thus, the enzyme is located in peroxisomes in herbivores and man, largely in mitochondria in carnivores, and in both the organelles in rodents. The mechanism of the species-specific dual organelle localization of SPT/AGT is either transcription of the gene from two different start sites or loss of the upstream translation initiation ATG codon by mutations. It appears that the mitochondrial versus peroxisomal distribution of SPT/AGT in different animal species is indispensable in meeting the metabolic needs caused by their respective food habits. As for the peroxisomal localization, glycolate is contained in plants much more than in animal tissues, and when ingested, it is converted to glyoxylate, an immediate precursor of oxalate, in liver peroxisomes. Therefore, peroxisomal localization of SPT/AGT may be indispensable for herbivores to convert the glyoxylate formed in peroxisomes into glycine in situ rather than forming oxalate. On the other hand, our recent studies showed that SPT/AGT contributed substantially to serine metabolism in rabbit, human, and dog livers; i.e., irrespective of its mitochondrial or peroxisomal localization. Thus, the mitochondrial localization of SPT/AGT was not a prerequisite for the metabolism of L-serine. Another source of glyoxylate is the metabolism of L-hydroxyproline, and in this case, the enzyme responsible for the glyoxylate formation has been reported to be a mitochondrial matrix enzyme. Collagen accounts for about 30% of total animal proteins and contains about 13% (w/w) hydroxyproline. It is therefore possible that both mitochondrial and peroxisomal SPT/AGT contribute to the metabolism of glyoxylate and serine, but the subcellular site for glyoxylate metabolism is different in herbivores and carnivores.
Collapse
Affiliation(s)
- A Ichiyama
- First Department of Biochemistry, Hamamatsu University School of Medicine, Shizuoka, Japan.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Sato N, Mizumoto K, Maehara N, Shono M, Nagai E, Tanaka M. Instability of chromosome 8 as an indicator of aggressive tumor phenotype in pancreatic cancer. J Surg Oncol 2001; 76:181-7. [PMID: 11276022 DOI: 10.1002/jso.1032] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND AND OBJECTIVES Chromosomal instability is a common feature of pancreatic carcinoma, but its biological significance remains unclear. In this study, we investigated the association between chromosomal instability and biological aggressiveness in human pancreatic cancer cells. METHODS Fluorescence in situ hybridization was performed to examine changes in chromosomal numbers in a total of 13 pancreatic cancer cell lines. We also assessed the potential for tumor aggressiveness within cancer cells by in vitro migration and invasion assay and by subcutaneous implantation into nude mice. RESULTS Chromosomal instability, characterized by numerical variations in copy numbers of chromosome 8, was observed in most cell lines, and the magnitude of instability was correlated well with both motility (P < 0.001) and invasion rate (P < 0.001) of these cells. Furthermore, a significant positive correlation existed between chromosome instability and tumor growth in vivo (P < 0.01). CONCLUSIONS These results suggest that the increased level of chromosomal instability may play a critical role in the development of aggressive tumor phenotype during pancreatic cancer progression. J. Surg. Oncol. 2001;76:181-187.
Collapse
Affiliation(s)
- N Sato
- Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | | | | | | | | | | |
Collapse
|
47
|
Ikubo A, Aoki Y, Nagai E, Suzuki T. Highly metastatic variant of a mouse colon carcinoma cell line, LM17 and its response to GM-CSF gene therapy. Clin Exp Metastasis 2001; 17:849-55. [PMID: 11089883 DOI: 10.1023/a:1006730320248] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
In order to establish a highly metastatic variant of a mouse colon carcinoma cell line (CT26), BALB/c mice were first subcutaneously injected with CT26 cells. Several weeks later, metastatic tumors in lungs were resected, mechanically dispersed into a single cell suspension and cultured in vitro until cells reached confluency. These tumor cells were then subcutaneously injected into new mice. After repeating this procedure five times, a highly lung metastatic cell line, denoted as LM17, has been established. The LM17 cells grow in vitro with or without serum, whereas parental CT26 cells require serum for their growth. The LM17 cells adhere to type I collagen or fibronectin stronger than CT26 cells do. The LM17 cells invade through Matrigel-coated basement membrane in greater number than CT26 cells. By gelatin zymography, LM17 cells showed higher proteinase activity than CT26. Furthermore, subcutaneous injection of irradiated LM17 cells infected with adenovirus harboring mouse GM-CSF gene prevents the growth and lung metastasis of pre-existing subcutaneous tumor. The injection of irradiated GM-CSF-producing LM17 cells after the surgical removal of pre-existing tumor also protected the occurrence of lung metastasis. These results suggest that this highly metastatic LM17 cell line could be useful for analysis of the lung metastatic mechanism and as the mouse GM-CSF gene therapy model.
Collapse
Affiliation(s)
- A Ikubo
- Department of Microbiology, Molecular Genetics and Immunology, University of Kansas Medical Center, Kansas City 66160, USA
| | | | | | | |
Collapse
|
48
|
Sato N, Maehara N, Mizumoto K, Nagai E, Yasoshima T, Hirata K, Tanaka M. Telomerase activity of cultured human pancreatic carcinoma cell lines correlates with their potential for migration and invasion. Cancer 2001; 91:496-504. [PMID: 11169932 DOI: 10.1002/1097-0142(20010201)91:3<496::aid-cncr1028>3.0.co;2-0] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
BACKGROUND Despite the recent clinical finding that high telomerase activity is an unfavorable prognostic marker for various human malignant tumors, there has been no experimental evidence supporting the link between telomerase and tumor aggressiveness. In the current investigation, the authors examined the relation between telomerase activity and potential for biologic aggressiveness in human pancreatic carcinoma cells. METHODS Telomerase activity was measured in a poorly metastatic cell line HPC-3 and its highly metastatic variant HPC-3H4, as well as in many pancreatic carcinoma cell lines. Aggressive behavior of cancer cells was assessed by in vitro migration and invasion assay. RESULTS Compared with parental HPC-3, HPC-3H4 displayed higher telomerase activity, which was associated with a scattered phenotype and enhanced migration activity. Furthermore, the authors found that relative telomerase levels correlated well with both motility (P = 0.0041) and invasion (P = 0.0114) in 13 pancreatic carcinoma cell lines. There was, however, no significant association between telomerase activity and cell proliferation. When telomerase activity of KP-1N cells was inhibited by transfection with antisense oligonucleotides, their motility and invasion rates were significantly decreased. CONCLUSIONS The authors concluded that the magnitude of telomerase activation may reflect the potential for aggressive behavior within cancer cells. These findings support the clinical utility of telomerase activity as a prognostic indicator. Their results also suggest a therapeutic potential for telomerase inhibitors to prevent tumor invasion and possibly metastasis.
Collapse
Affiliation(s)
- N Sato
- Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | | | | | | | | | | | | |
Collapse
|
49
|
Takashima M, Ueki T, Nagai E, Yao T, Yamaguchi K, Tanaka M, Tsuneyoshi M. Carcinoma of the ampulla of Vater associated with or without adenoma: a clinicopathologic analysis of 198 cases with reference to p53 and Ki-67 immunohistochemical expressions. Mod Pathol 2000; 13:1300-7. [PMID: 11144926 DOI: 10.1038/modpathol.3880238] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Adenomatous areas are found frequently within or in the vicinity of carcinoma of the ampulla of Vater. This makes definite diagnosis difficult in the preoperative examination. The adenoma-carcinoma development hypothesis is generally accepted for colorectal tumors. Recently, a genetic alteration model during colorectal tumor development has attracted much attention, leading to various studies. We studied clinicopathologic features, prognostic factors, and the alteration of the p53 tumor suppressor gene using p53 immunohistochemical staining in pure adenomas, pure carcinomas, and carcinomas with adenomatous areas. A proliferative activity of the tumors using Ki-67 was also evaluated. Nine cases of pure adenoma and 198 cases of carcinoma of the ampulla of Vater were selected for this study. Among the 198 cases of thecarcinoma, 83 cases (42%) had adenomatous areas. Positivity of p53 immunohistochemical staining was 0% in pure adenomas, 36% in the adenomatous areas of carcinomas with adenomatous areas and 62% in the carcinomatous areas of carcinomas with adenomatous areas, and 56% in pure carcinoma. Accumulation of p53 protein and the Ki-67 labeling index revealed no significant difference in prognosis. The clinicopathological factors examined were as follows: degree of invasion of the surrounding tissue, such as duodenal wall; pancreatic parenchyma; the presence or absence of lymphatic permeation; venous invasion; perineural invasion; the presence of regional lymph node metastasis; and TNM stage. Each of the clinicopathological factors showed a significant difference. Multivariate analysis revealed strong predictors for a worse prognosis: presence of lymphatic permeation, invasion of the pancreas, and perineural invasion. In conclusion, our results are consistent with the adenoma--carcinoma development hypothesis. It would seem that the molecular events leading to p53 accumulation in neoplasms of the ampulla of Vater occur relatively late during the oncogenetic process. Moreover, we think it may be useful to refer to the p53 overexpression in the diagnosis of ampullary tumors.
Collapse
Affiliation(s)
- M Takashima
- Department of Anatomic Pathology, Pathological Sciences, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | | | | | | | | | | | | |
Collapse
|
50
|
Ogawa T, Kusumoto M, Mizumoto K, Sato N, Nagai E, Ikubo A, Aoki Y, Tanaka M. GM-CSF gene therapy using adenoviral vector in hamster pancreatic cancer. J Hepatobiliary Pancreat Surg 2000; 7:306-11. [PMID: 10982631 DOI: 10.1007/s005340070053] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The aim of this study was to examine the antitumor effect of irradiated granulocyte macrophage-colony-stimulating factor (GM-CSF)-gene-transduced hamster pancreatic cancer cells and its relationship to the amount of GM-CSF produced by transduced tumor cells. Hamster pancreatic adenocarcinoma cells, HPD1NR, which spontaneously secrete 15.0+/-0.4 pg/106 cells per 24 h of GM-CSF, and HPD2NR cells, which do not secrete GM-CSF, were used. When these cells were infected with recombinant adenovirus harboring the GM-CSF gene, HPD1NR and HPD2NR secreted 624.2+/-9.9 and 157.8 +/-5.7 pg/106 cells per 24 h, respectively. Vaccination with irradiated GM-CSF-secreting HPD2NR completely protected syngeneic hamsters challenged with live parental cells. On the other hand, vaccination with irradiated HPD1NR protected 60% of hamsters from tumor development after challenge with parental cells. None of the tumor-free hamsters initially vaccinated with irradiated GM-CSF-producing HPD2NR cells developed tumor upon repeated challenge with parental cells during the entire observation period. Irradiated GM-CSF-gene-transduced hamster pancreatic cells are promising as a novel adjuvant cancer therapy after surgery for primary and metastatic pancreatic cancer. The results indicate the necessity for a therapeutic strategy for cancer based on the cytokine status of tumors.
Collapse
Affiliation(s)
- T Ogawa
- First Department of Surgery, Kyushu University Faculty of Medicine, Fukuoka, Japan
| | | | | | | | | | | | | | | |
Collapse
|