1
|
Niki K, Asano R, Sakanoue R, Hasegawa A, Yamada Y, Hagiwara M, Mimura K. Photoemission Orbital Tomography Using a Robust Sparse PhaseLift. J Phys Chem A 2024; 128:2672-2679. [PMID: 38530789 DOI: 10.1021/acs.jpca.3c06506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2024]
Abstract
Photoemission orbital tomography (POT) from photoelectron momentum maps (PMMs) is a powerful technique that visualizes the shape of the molecular orbitals (MOs) of molecular films. For further utilization of POT, a simple and low-cost method of POT is highly required. Here, we propose a new POT method based on the PhaseLift algorithm (PhaseLift POT). This method utilizes a lifting procedure to convert the PMM, which is a second-order polynomial of MO coefficients, into a first-order polynomial of the lifted MO coefficients and further relaxes the equality constraint for a given PMM. We also established a method to improve the accuracy of phase retrieval from the noisy PMM data by using sparsity for MO coefficients (sparse PhaseLift POT). These methods make it possible to reconstruct the three-dimensional MOs, including phases of the wave function, directly from a single experimental PMM. This method can also precisely determine the adsorption-induced molecular deformations with an accuracy of 0.05 [Å]. Furthermore, the robust sparse PhaseLift POT is robust against unavoidable noise in the experimental PMMs due to the relaxation of the matching condition for a given PMM. Therefore, this will be an innovative tool for POT, especially for analyzing the dynamics of the molecules during the chemical reaction and excitation processes.
Collapse
Affiliation(s)
- K Niki
- Graduate School of Science, Chiba University, Chiba 263-8522, Japan
| | - R Asano
- Graduate School of Science, Chiba University, Chiba 263-8522, Japan
| | - R Sakanoue
- Graduate School of Science, Chiba University, Chiba 263-8522, Japan
| | - A Hasegawa
- Graduate School of Science, Chiba University, Chiba 263-8522, Japan
| | - Y Yamada
- Faculty of Pure and Applied Science, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - M Hagiwara
- Graduate School of Science, Chiba University, Chiba 263-8522, Japan
| | - K Mimura
- Graduate School of Information Sciences, Hiroshima City University, Hiroshima 731-3194, Japan
- School of Computing, Tokyo Institute of Technology, Yokohama, Kanagawa 226-0026, Japan
| |
Collapse
|
2
|
Murata S, Mimura K, Kawamura T, Saito H, Ohno H, Tsujii E, Shinohara T, Miyazaki Y, Ohki T. Bloodstream infection caused by Wickerhamiella pararugosa in a patient with intestinal obstruction: A case report. J Infect Chemother 2024:S1341-321X(24)00049-7. [PMID: 38369124 DOI: 10.1016/j.jiac.2024.02.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 12/21/2023] [Accepted: 02/13/2024] [Indexed: 02/20/2024]
Abstract
The fungus Wickerhamiella pararugosa (Candida pararugosa) has been detected in various human organs but has rarely caused bloodstream infections. This report presents a case of central venous catheter-related bloodstream infection (CRBSI) of W. pararugosa in an adult. A female patient in her 80s was admitted to our facility for intestinal obstruction caused by colorectal cancer. The patient's ability to consume food was hindered, necessitating the insertion of a central venous catheter (CVC) into the internal jugular vein. On day 3 after admission, the patient developed a fever, prompting blood and CVC tip cultures to be performed. On day 5, yeast-like fungi were discovered in the blood cultures, and fosfluconazole (fluconazole [FLCZ] pro-drug) treatment was initiated. On day 8, yeast-like fungi were identified in both the blood and CVC tip cultures, leading to a diagnosis of CRBSI. The fungus was identified as W. pararugosa through biochemical and genetic characterization. This finding justified the use of micafungin (MCFG) for combination therapy. On day 17, the minimum inhibitory concentrations (MIC) for FLCZ and MCFG were 4-8 and 0.06 μg/mL, respectively. Accordingly, the treatment was changed to monotherapy with MCFG. After a 21-day treatment regimen, the patient was discharged on day 31. We present a case of CRBSI caused by W. pararugosa in an adult with intestinal obstruction. The notable increase in the MIC of FLCZ necessitated monotherapy with MCFG, which resulted in successful recovery of the patient.
Collapse
Affiliation(s)
- Satoshi Murata
- Department of Pharmacy, Saitama Sekishinkai Hospital, 2-37-20 Irumagawa, Sayama, Saitama, 350-1305, Japan
| | - Kazuyuki Mimura
- Department of General Internal Medicine, Saitama Medical Center, Saitama Medical University, 1981 Kamoda, Kawagoe, Saitama, 350-8550, Japan.
| | - Takayuki Kawamura
- Department of Infectious Disease and Infection Control, Saitama Medical Center, Saitama Medical University, 1981 Kamoda, Kawagoe, Saitama, 350-8550, Japan
| | - Hiroyuki Saito
- Department of Surgery, Saitama Sekishinkai Hospital, 2-37-20 Irumagawa, Sayama, Saitama, 350-1305, Japan
| | - Hideaki Ohno
- Department of Infectious Disease and Infection Control, Saitama Medical Center, Saitama Medical University, 1981 Kamoda, Kawagoe, Saitama, 350-8550, Japan
| | - Emi Tsujii
- Department of Clinical Laboratory, Saitama Sekishinkai Hospital, 2-37-20 Irumagawa, Sayama, Saitama, 350-1305, Japan
| | - Takayuki Shinohara
- Department of Fungal Infection, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan
| | - Yoshitsugu Miyazaki
- Department of Fungal Infection, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan
| | - Takao Ohki
- Department of Pharmacy, Saitama Sekishinkai Hospital, 2-37-20 Irumagawa, Sayama, Saitama, 350-1305, Japan
| |
Collapse
|
3
|
Kawamura T, Ono D, Shirai A, Mimura K, Iida S, Saita K, Oka H, Ohno H. Acute femoral osteomyelitis due to hypermucoviscous Klebsiella pneumonia. IDCases 2022; 27:e01404. [PMID: 35111573 PMCID: PMC8789586 DOI: 10.1016/j.idcr.2022.e01404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 01/11/2022] [Accepted: 01/12/2022] [Indexed: 11/21/2022] Open
Abstract
Hypervirulent hypermucoviscous Klebsiella pneumoniae strains have emerged as clinically important pathogens causing invasive infections. K. pneumoniae osteomyelitis is uncommon in adult patients, and may mimic bone tumors on presentation. We report a patient with left rectus femoris muscle abscess and acute osteomyelitis of the left femur due to hypermucoviscous K. pneumoniae with negative blood culture, who was initially thought to have left thigh tumor. The patient's infection resolved with surgical drainage and debridement and intravenous and antibiotic therapy.
Collapse
Affiliation(s)
- Takayuki Kawamura
- Department of Infectious Disease and Infection Control, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Daisuke Ono
- Department of Infectious Disease and Infection Control, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Ayako Shirai
- Department of General Internal Medicine, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Kazuyuki Mimura
- Department of General Internal Medicine, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Shunpei Iida
- Department of Orthopaedic Surgery, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Kazuo Saita
- Department of Orthopaedic Surgery, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Hideaki Oka
- Department of General Internal Medicine, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Hideaki Ohno
- Department of Infectious Disease and Infection Control, Saitama Medical Center, Saitama Medical University, Saitama, Japan
- Correspondence to: Department of Infectious Disease and Infection Control, Saitama Medical Center, Saitama Medical University, 1981 Kamoda, Kawagoe, Saitama 350-8550, Japan.
| |
Collapse
|
4
|
Mimura K, Oka H, Sawano M. A perspective on hospital-acquired (nosocomial) infection control of COVID-19: usefulness of spatial separation between wards and airborne isolation unit. J Breath Res 2021; 15. [PMID: 34293732 DOI: 10.1088/1752-7163/ac1721] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 07/22/2021] [Indexed: 01/12/2023]
Abstract
The coronavirus disease 2019 (COVID-19) pandemic has imposed a considerable burden on hospitals and healthcare workers (HCWs) worldwide, increasing the risk of outbreaks and nosocomial transmission to 'non-COVID-19' patients, who represent the highest-risk population in terms of mortality, and HCWs. Since HCWs are at the interface between hospitals on the one hand and the community on the other, they are potential reservoirs, carriers, or victims of severe acute respiratory syndrome coronavirus 2 cross-transmission. In addition, there has been a paradigm shift in the management of viral respiratory outbreaks, such as the widespread testing of patients and HCWs, including asymptomatic individuals. In hospitals, there is a risk of aerosol transmission in poorly ventilated spaces, and when performing aerosol-producing procedures, it is imperative to take measures against aerosol transmission. In particular, spatial separation of the inpatient ward for non-COVID-19 patients from that designated for patients with suspected or confirmed COVID-19 as well as negative-pressure isolation on the floor of the ward, using an airborne infection isolation device could help prevent nosocomial infection.
Collapse
Affiliation(s)
- Kazuyuki Mimura
- Department of General Internal Medicine, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Hideaki Oka
- Department of General Internal Medicine, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Makoto Sawano
- Center for Advanced Emergency Medicine and Critical Care, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| |
Collapse
|
5
|
Nozaki Y, Ono D, Yamamoto K, Mimura K, Sasaki M, Horino A, Ohno H, Oka H. A case of renal abscess and bacteremia caused by Burkholderia pseudomallei that was first unidentifiable by matrix-assisted laser desorption ionization-time of flight mass spectrometry in a Japanese-man. J Infect Chemother 2021; 27:1653-1657. [PMID: 34147356 DOI: 10.1016/j.jiac.2021.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 06/02/2021] [Accepted: 06/07/2021] [Indexed: 10/21/2022]
Abstract
Melioidosis, an infectious disease caused by Burkholderia pseudomallei, is endemic in specific regions, including Southeast Asia and Northern Australia. In Japan, where no autochthonous has been reported to date, melioidosis is a rare infectious disease. Herein, we report a case of melioidosis in a 68-year-old Japanese man with renal abscess and bacteremia, but without pneumonia. The patient presented to our hospital and was admitted for fever and chills that have persisted for two months. It was speculated that he was infected in Thailand, where his family lives because he shuttled between Thailand and Japan. Blood cultures on admission identified Burkholderia species; however, the species was unidentifiable by matrix-assisted laser desorption ionization-time of flight mass spectrometry. Further re-examination, including culture, loop-mediated isothermal amplification, and multiplex polymerase chain reaction methods, finally identified Burkholderia pseudomallei. We treated the patient with intravenous ceftazidime for four weeks. In addition to the antibiotics administration, puncture drainage of the renal abscess was performed, and he gradually became afebrile. Intravenous ceftazidime was switched to oral sulfamethoxazole/trimethoprim on post-admission day 32, and he was discharged. After five months of oral sulfamethoxazole/trimethoprim, no recurrence was observed one year after discharge. To diagnose melioidosis, especially in non-endemic areas, a precise and thorough understanding of its epidemiology, presentation, and identification methods is necessary.
Collapse
Affiliation(s)
- Yujin Nozaki
- Department of General Internal Medicine, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Daisuke Ono
- Department of Infectious Diseases and Infection Control, Saitama Medical Center, Saitama Medical University, Saitama, Japan.
| | - Kei Yamamoto
- Department of General Internal Medicine, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Kazuyuki Mimura
- Department of General Internal Medicine, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Masakazu Sasaki
- Department of Clinical Laboratories, Toho University Omori Medical Center, Tokyo, Japan
| | - Atsuko Horino
- Department of Bacteriology II, National Institute of Infectious Diseases, Japan
| | - Hideaki Ohno
- Department of Infectious Diseases and Infection Control, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Hideaki Oka
- Department of General Internal Medicine, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| |
Collapse
|
6
|
Kase K, Saito M, Yamada L, Nakajima S, Ashizawa M, Kanke Y, Hanayama H, Onozawa H, Okayama H, Endo H, Fujita S, Sakamoto W, Saze Z, Momma T, Mimura K, Ohki S, Kono K. 152P ARID1A deficiency in EBV-positive gastric cancer is partially regulated by EBV-encoded miRNAs, but not by DNA promotor hypermethylation. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.10.173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
|
7
|
Yamada L, Saito M, Kase K, Nakajima S, Endo E, Ujiie D, Min A, Ashizawa M, Matsumoto T, Kanke Y, Nakano H, Ito M, Onozawa H, Okayama H, Fujita S, Sakamoto W, Saze Z, Momma T, Mimura K, Kono K. 75P The evaluation of selective sensitivity of EZH2 inhibitors based on synthetic lethality in ARID1A-deficient gastric cancer. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.10.095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
|
8
|
Nakakubo S, Kimura S, Mimura K, Kajiwara C, Ishii Y, Konno S, Tateda K. Traditional Japanese Herbal Medicine Hochu-Ekki-to Promotes Pneumococcal Colonization Clearance via Macrophage Activation and Interleukin 17A Production in Mice. Front Cell Infect Microbiol 2020; 10:569158. [PMID: 33194807 PMCID: PMC7649813 DOI: 10.3389/fcimb.2020.569158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 09/22/2020] [Indexed: 12/15/2022] Open
Abstract
Streptococcus pneumoniae may colonize the nasopharynx, and as pneumococcal colonization causes invasive diseases and the subsequent transmission, reducing bacterial burden in the nasal cavity is critical. Hochu-ekki-to (TJ-41) is a traditional Japanese herbal medicine that exerts immunomodulatory effects in host cells. In this study, we investigated the potency of TJ-41 in modulating pneumococcal colonization clearance by activating host immunity. Mice, intranasally inoculated with pneumococci, were treated orally with TJ-41. During colonization, TJ-41 treatment significantly reduced pneumococcal burden and increased macrophage population in the nasopharynx. Furthermore, interleukin 17A production was significantly enhanced after TJ-41 treatment. In vitro experiment using nasal-derived cells revealed that pneumococcal antigen exposure upregulated the transcription of interleukin 17A in the TJ-41-treated group compared with that in the control group. Macrophages activated by killed bacteria were significantly increased in the presence of TJ-41 in an interleukin 17A-dependent manner. Moreover, TJ-41 enhanced phagocytosis, inhibited bacterial growth, and improved the antigen-presenting capacity of macrophages. Our results demonstrate that TJ-41 accelerates the clearance of pneumococcal nasopharyngeal colonization via macrophage activation. Subsequent production of interleukin 17A provides an additional benefit to effector cells.
Collapse
Affiliation(s)
- Sho Nakakubo
- Department of Microbiology and Infectious Diseases, Faculty of Medicine, Toho University Graduate School of Medicine, Tokyo, Japan.,Department of Respiratory Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Hokkaido, Japan
| | - Soichiro Kimura
- Department of Microbiology and Infectious Diseases, Faculty of Medicine, Toho University Graduate School of Medicine, Tokyo, Japan
| | - Kazuyuki Mimura
- Department of Microbiology and Infectious Diseases, Faculty of Medicine, Toho University Graduate School of Medicine, Tokyo, Japan
| | - Chiaki Kajiwara
- Department of Microbiology and Infectious Diseases, Faculty of Medicine, Toho University Graduate School of Medicine, Tokyo, Japan
| | - Yoshikazu Ishii
- Department of Microbiology and Infectious Diseases, Faculty of Medicine, Toho University Graduate School of Medicine, Tokyo, Japan
| | - Satoshi Konno
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Hokkaido, Japan
| | - Kazuhiro Tateda
- Department of Microbiology and Infectious Diseases, Faculty of Medicine, Toho University Graduate School of Medicine, Tokyo, Japan
| |
Collapse
|
9
|
Nagase Y, Matsuzaki S, Mizuta-Odani C, Onishi H, Tanaka H, Nakagawa S, Mimura K, Tomimatsu T, Endo M, Kimura T. In-vitro fertilisation-embryo-transfer complicates the antenatal diagnosis of placenta accreta spectrum using MRI: a retrospective analysis. Clin Radiol 2020; 75:927-933. [PMID: 32838927 DOI: 10.1016/j.crad.2020.07.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 07/02/2020] [Indexed: 10/23/2022]
Abstract
AIM To evaluate the diagnostic accuracy of magnetic resonance imaging (MRI) for the antenatal diagnosis of placenta accreta spectrum (PAS). MATERIALS AND METHODS Data from 95 patients with placenta previa or low-lying placenta who underwent MRI at Osaka University Hospital for the antenatal diagnosis of PAS between January 2013 and December 2018 were reviewed retrospectively. The antenatal MRI signs suggesting PAS were assessed. Patients were divided into two groups depending on whether they were diagnosed with PAS. Factors that affected PAS diagnosis were identified using multivariate analysis. RESULTS The diagnostic accuracy of MRI for detecting PAS was as follows: 71.4% sensitivity, 96.4% specificity, and area under the curve (AUC) of 0.839 (95% confidence interval [CI]: 0.73-0.91). The diagnostic accuracy was lower in patients with in-vitro fertilisation with embryo transfer (IVF-ET): 22.2% sensitivity, 93.3% specificity, and AUC=0.578 (95% CI: 0.417-0.724). On multivariate analysis, only IVF-ET showed a significant association with false-positive or -negative MRI diagnosis of PAS (adjusted odds ratio: 26.5; 95% CI: 2.42-289.4; p=0.007). CONCLUSION IVF-ET affects the antenatal diagnosis of PAS using MRI.
Collapse
Affiliation(s)
- Y Nagase
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - S Matsuzaki
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Osaka, Japan.
| | - C Mizuta-Odani
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - H Onishi
- Department of Diagnostic and Interventional Radiology, Osaka University Graduate School of Medicine, Japan
| | - H Tanaka
- Department of Functional Diagnostic Science, Division of Health Science, Osaka University Graduate School of Medicine, Japan
| | - S Nakagawa
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - K Mimura
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - T Tomimatsu
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - M Endo
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Osaka, Japan; Department of Children and Women's Health, Osaka University Graduate School of Medicine, Japan
| | - T Kimura
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Osaka, Japan
| |
Collapse
|
10
|
Mimura K, Kimura S, Kajiwara C, Nakakubo S, Schaller MA, Ishii Y, Standiford TJ, Kunkel SL, Tateda K. Pneumococcal conjugate vaccine modulates macrophage-mediated innate immunity in pneumonia caused by Streptococcus pneumoniae following influenza. Microbes Infect 2020; 22:312-321. [PMID: 31958572 DOI: 10.1016/j.micinf.2019.12.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 12/09/2019] [Accepted: 12/10/2019] [Indexed: 11/30/2022]
Abstract
Pneumococcal conjugate vaccination (PCV) may prevent influenza-related pneumonia, including Streptococcus pneumoniae pneumonia. To investigate PCV efficacy against secondary pneumococcal pneumonia following influenza, PCV was administered intramuscularly 2 and 5 weeks before S. pneumoniae serotype-3 colonization of murine nasopharynges followed by intranasal challenge with a sublethal dose of influenza A virus. Bacterial and viral loads, including innate immune responses were compared across conditions. PCV vaccination improved the survival of mice with secondary pneumococcal pneumonia and significantly reduced the pulmonary bacterial burden. Increased monocyte/macrophage influx into the lungs, alleviated loss of alveolar macrophages and decreased neutrophil influx into the lungs occurred in PCV-treated mice irrespective of pneumococcal colonization. Higher monocyte chemoattractant protein 1 levels and lower levels of CXCL1, interferon-γ, interleukin-17A, and IL-10, were detected in PCV-treated mice. Additionally, PCV treatment activated the macrophage intracellular killing of S. pneumoniae. Collectively, PCV potentially modulates the host's innate immunity and specific antibodies induction. Macrophage-related innate immunity should be further explored to elucidate the efficacy and mechanisms of PCV versus influenza-related life-threatening diseases.
Collapse
Affiliation(s)
- Kazuyuki Mimura
- Department of Microbiology and Infectious Diseases, Faculty of Medicine, Toho University Graduate School of Medicine, Tokyo, 143-8540, Japan
| | - Soichiro Kimura
- Department of Microbiology and Infectious Diseases, Faculty of Medicine, Toho University Graduate School of Medicine, Tokyo, 143-8540, Japan.
| | - Chiaki Kajiwara
- Department of Microbiology and Infectious Diseases, Faculty of Medicine, Toho University Graduate School of Medicine, Tokyo, 143-8540, Japan
| | - Sho Nakakubo
- First Department of Internal Medicine, Hokkaido University Hospital, Hokkaido, 060-8638, Japan
| | - Matthew A Schaller
- Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, 48105, USA
| | - Yoshikazu Ishii
- Department of Microbiology and Infectious Diseases, Faculty of Medicine, Toho University Graduate School of Medicine, Tokyo, 143-8540, Japan
| | - Theodore J Standiford
- Department of Pathology, University of Michigan Medical School, Ann Arbor, MI, 48105, USA
| | - Steven L Kunkel
- Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, 48105, USA
| | - Kazuhiro Tateda
- Department of Microbiology and Infectious Diseases, Faculty of Medicine, Toho University Graduate School of Medicine, Tokyo, 143-8540, Japan
| |
Collapse
|
11
|
Shibata M, Nakajima T, Mimura K, Shimura T, Kono K, Takenoshita S. MDSC (myeloid-derived suppressor cells) is an important immunosuppressing factor and functionally related with VEGF and IL-17 in patients with gastrointestinal cancer. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz447.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
12
|
Suzuki Y, Okonogi N, Sato H, Oike T, Yoshimoto Y, Mimura K, Noda S, Okamoto M, Tamaki T, Morokoshi Y, Hasegawa S, Ohgaki H, Yokoo H, Nakano T. EP-2163 Combination therapy of microglia and radiotherapy in a rat model of spontaneous glioma. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)32583-6] [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: 11/29/2022]
|
13
|
Ikenaga E, Yasui A, Kawamura N, Mizumaki M, Tsutsui S, Mimura K. Hard X-ray Photoemission Spectroscopy at Two Public Beamlines of SPring-8: Current Status and Ongoing Developments. ACTA ACUST UNITED AC 2018. [DOI: 10.1080/08940886.2018.1483652] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- E. Ikenaga
- Institute of Materials and Systems for Sustainability, Nagoya University, Nagoya, Japan
- Japan Synchrotron Radiation Institute (JASRI), SPring-8, Sayo, Hyogo, Japan
| | - A. Yasui
- Japan Synchrotron Radiation Institute (JASRI), SPring-8, Sayo, Hyogo, Japan
| | - N. Kawamura
- Japan Synchrotron Radiation Institute (JASRI), SPring-8, Sayo, Hyogo, Japan
| | - M. Mizumaki
- Japan Synchrotron Radiation Institute (JASRI), SPring-8, Sayo, Hyogo, Japan
| | - S. Tsutsui
- Japan Synchrotron Radiation Institute (JASRI), SPring-8, Sayo, Hyogo, Japan
| | - K. Mimura
- Department of Physics and Electronics, Osaka Prefecture University, Sakai, Japan
| |
Collapse
|
14
|
Rousuli A, Sato H, Iga F, Hayashi K, Ishii K, Wada T, Nagasaki T, Mimura K, Anzai H, Ichiki K, Ueda S, Kondo A, Kindo K, Takabatake T, Shimada K, Namatame H, Taniguchi M. Hard x-ray photoemission study of Yb 1-x Zr x B 12: the effects of electron doping on the Kondo insulator YbB 12. J Phys Condens Matter 2017; 29:265601. [PMID: 28443603 DOI: 10.1088/1361-648x/aa6f70] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We have carried out hard x-ray photoemission spectroscopy (HAXPES) of Yb1-x Zr x B12 ([Formula: see text]) to study the effects of electron doping on the Kondo insulator YbB12. The Yb valences of Yb1-x Zr x B12 at 300 K estimated from the Yb 3d HAXPES spectra decreased after substituting Yb with Zr from 2.93 for YbB12 to 2.83 for Yb0.125Zr0.875B12. A temperature dependent valence decrease was found upon cooling for all doping concentrations. We found peak shifts of the B 1s and Zr 3d5/2, and Yb3+ 4f spectra toward the deeper binding-energy with increasing Zr concentration, which indicates a shift of the Fermi level to the higher energy and that of the Yb 4f hole level close to the Fermi level, respectively, due to electron doping. These results qualitatively show the enhanced hybridization between the Yb 4f and conduction-band states with Zr substitution, consistent with magnetic susceptibility measurements.
Collapse
Affiliation(s)
- A Rousuli
- Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
15
|
Nishikawa A, Matsuzaki S, Mimura K, Kanagawa T, Kimura T. Short interpregnancy interval after B-Lynch uterine compression suture: a case report. CLIN EXP OBSTET GYN 2016. [DOI: 10.12891/ceog2085.2016] [Citation(s) in RCA: 2] [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: 11/01/2022]
|
16
|
Matsuzaki S, Yoshino K, Mimura K, Kanagawa T, Kimura T. Cesarean delivery via a transverse uterine fundal incision for the successful management of a low-lying placenta and aplastic anemia. CLIN EXP OBSTET GYN 2016. [DOI: 10.12891/ceog2055.2016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
|
17
|
Nishikawa A, Matsuzaki S, Mimura K, Kanagawa T, Kimura T. Short interpregnancy interval after B-Lynch uterine compression suture: a case report. CLIN EXP OBSTET GYN 2016; 43:434-436. [PMID: 27328508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
PURPOSE The influence of the B-Lynch suture technique on subsequent fertility and pregnancy outcomes is not clear. In the present report, the authors describe the case of a very short interpregnancy interval following the successful placement of a B-lynch suture and discuss the associated problems. MATERIALS AND METHODS A 33-year-old-woman underwent cesarean section after undergoing artificial induction of labor and subsequent atonic postpartum hemorrhage. Placement of a B-Lynch brace suture successfully stopped the bleeding and preserved the uterus. The patient became unexpectedly pregnant only four months later, making the present case the shortest reported interpregnancy interval after a surgery involving the B-Lynch suture. CONCLUSION In the present case, fertility was not affected, and obstetric complications (abortion, fetal growth restriction, preterm delivery, and placenta previa) were not observed. Adhesions between the abdominal wall and the surface of the uterus along the previous B-Lynch suture line were observed and irregular, large blood vessels were observed on the surface of the uterus. Further reports are expected to determine the influence of the B-Lynch brace suture technique on the subsequent pregnancy.
Collapse
|
18
|
Matsuzaki S, Yoshino K, Mimura K, Kanagawa T, Kimura T. Cesarean delivery via a transverse uterine fundal incision for the successful management of a low-lying placenta and aplastic anemia. CLIN EXP OBSTET GYN 2016; 43:262-264. [PMID: 27132424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
PURPOSE To present a case report on the successful management of a low-lying placenta and aplastic anemia. Aplastic anemia is a rare but serious disorder that is often characterized by severe pancytopenia. Because of the rarity of aplastic anemia, a pregnancy complicated by it is rarely encountered by obstetricians. Moreover, placenta previa (low-lying placenta) complicated by aplastic anemia has not been previously reported. MATERIALS AND METHODS The authors present the first reported case of placenta previa with aplastic anemia in a patient who had undergone a previous cesarean delivery. RESULTS They successfully managed this case by making a transverse uterine fundal incision during an elective cesarean delivery. This incision minimized blood loss and enabled good visualization of the source of bleeding in the lower uterine segment. Bleeding was stemmed by suturing the source of bleeding. CONCLUSION The authors propose that this procedure should be considered for patients with low platelet counts and abnormal placentation.
Collapse
|
19
|
Sugitani K, Mimura K, Takeuchi M, Lepot K, Ito S, Javaux EJ. Early evolution of large micro-organisms with cytological complexity revealed by microanalyses of 3.4 Ga organic-walled microfossils. Geobiology 2015; 13:507-521. [PMID: 26073280 DOI: 10.1111/gbi.12148] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Accepted: 05/13/2015] [Indexed: 06/04/2023]
Abstract
The Strelley Pool Formation (SPF) is widely distributed in the East Pilbara Terrane (EPT) of the Pilbara Craton, Western Australia, and represents a Paleoarchean shallow-water to subaerial environment. It was deposited ~3.4 billion years ago and displays well-documented carbonate stromatolites. Diverse putative microfossils (SPF microfossils) were recently reported from several localities in the East Strelley, Panorama, Warralong, and Goldsworthy greenstone belts. Thus, the SPF provides unparalleled opportunities to gain insights into a shallow-water to subaerial ecosystem on the early Earth. Our new micro- to nanoscale ultrastructural and microchemical studies of the SPF microfossils show that large (20-70 μm) lenticular organic-walled flanged microfossils retain their structural integrity, morphology, and chain-like arrangements after acid (HF-HCl) extraction (palynology). Scanning and transmitted electron microscopy of extracted microfossils revealed that the central lenticular body is either alveolar or hollow, and the wall is continuous with the surrounding smooth to reticulated discoidal flange. These features demonstrate the evolution of large micro-organisms able to form an acid-resistant recalcitrant envelope or cell wall with complex morphology and to form colonial chains in the Paleoarchean era. This study provides evidence of the evolution of very early and remarkable biological innovations, well before the presumed late emergence of complex cells.
Collapse
Affiliation(s)
- K Sugitani
- Graduate School of Environmental Studies, Nagoya University, Nagoya, Japan
- Australian Centre for Astrobiology, University of New South Wales, Sydney, NSW, Australia
| | - K Mimura
- Graduate School of Environmental Studies, Nagoya University, Nagoya, Japan
| | - M Takeuchi
- Graduate School of Environmental Studies, Nagoya University, Nagoya, Japan
| | - K Lepot
- Laboratoire d'Océanologie et de Géosciences, Université de Lille, CNRS UMR8187, Villeneuve d'Ascq, France
| | - S Ito
- School of Informatics and Sciences, Nagoya University, Nagoya, Japan
| | - E J Javaux
- Department of Geology, University of Liège, Liège, Belgium
| |
Collapse
|
20
|
Sugitani K, Mimura K, Takeuchi M, Yamaguchi T, Suzuki K, Senda R, Asahara Y, Wallis S, Van Kranendonk MJ. A Paleoarchean coastal hydrothermal field inhabited by diverse microbial communities: the Strelley Pool Formation, Pilbara Craton, Western Australia. Geobiology 2015; 13:522-545. [PMID: 26189535 DOI: 10.1111/gbi.12150] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Accepted: 06/10/2015] [Indexed: 06/04/2023]
Abstract
The 3.4-Ga Strelley Pool Formation (SPF) at the informally named 'Waterfall Locality' in the Goldsworthy greenstone belt of the Pilbara Craton, Western Australia, provides deeper insights into ancient, shallow subaqueous to possibly subaerial ecosystems. Outcrops at this locality contain a thin (<3 m) unit of carbonaceous and non-carbonaceous cherts and silicified sandstones that were deposited in a shallow-water coastal environment, with hydrothermal activities, consistent with the previous studies. Carbonaceous, sulfide-rich massive black cherts with coniform structures up to 3 cm high are characterized by diverse rare earth elements (REE) signatures including enrichment of light [light rare earth elements (LREE)] or middle rare earth elements and by enrichment of heavy metals represented by Zn. The massive black cherts were likely deposited by mixing of hydrothermal and non-hydrothermal fluids. Coniform structures in the cherts are characterized by diffuse laminae composed of sulfide particles, suggesting that unlike stromatolites, they were formed dominantly through physico-chemical processes related to hydrothermal activity. The cherts yield microfossils identical to previously described carbonaceous films, small and large spheres, and lenticular microfossils. In addition, new morphological types such as clusters composed of large carbonaceous spheroids (20-40 μm across each) with fluffy or foam-like envelope are identified. Finely laminated carbonaceous cherts are devoid of heavy metals and characterized by the enrichment of LREE. This chert locally contains conical to domal structures characterized by truncation of laminae and trapping of detrital grains and is interpreted as siliceous stromatolite formed by very early or contemporaneous silicification of biomats with the contribution of silica-rich hydrothermal fluids. Biological affinities of described microfossils and microbes constructing siliceous stromatolites are under investigation. However, this study emphasizes how diverse the microbial community in Paleoarchean coastal hydrothermal environment was. We propose the diversity is at least partially due to the availability of various energy sources in this depositional environment including reducing chemicals and sunlight.
Collapse
Affiliation(s)
- K Sugitani
- Graduate School of Environmental Studies, Nagoya University, Nagoya, Japan
- Australian Centre for Astrobiology, University of New South Wales, Sydney, NSW, Australia
| | - K Mimura
- Graduate School of Environmental Studies, Nagoya University, Nagoya, Japan
| | - M Takeuchi
- Graduate School of Environmental Studies, Nagoya University, Nagoya, Japan
| | - T Yamaguchi
- School of Informatics and Sciences, Nagoya University, Nagoya, Japan
| | - K Suzuki
- Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan
| | - R Senda
- Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan
| | - Y Asahara
- Graduate School of Environmental Studies, Nagoya University, Nagoya, Japan
| | - S Wallis
- Graduate School of Environmental Studies, Nagoya University, Nagoya, Japan
| | - M J Van Kranendonk
- Australian Centre for Astrobiology, University of New South Wales, Sydney, NSW, Australia
- School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, NSW, Australia
- Australian Research Council Centre of Excellence for Core to Crust Fluid Systems, Sydney, NSW, Australia
| |
Collapse
|
21
|
Maeno T, Sasaki M, Shibue Y, Mimura K, Oka H. Calcium oxalate in the sputum may aid in the diagnosis of pulmonary aspergillosis: A report of two cases. Med Mycol Case Rep 2015; 8:32-6. [PMID: 25834787 PMCID: PMC4366443 DOI: 10.1016/j.mmcr.2015.01.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2014] [Accepted: 01/23/2015] [Indexed: 11/12/2022] Open
Abstract
We present two cases of pulmonary aspergillosis in which calcium oxalate crystals in the sputum proved to be a useful diagnostic clue. In case 1, Aspergillus hyphae was not identified; however, calcium oxalate crystals were present, and chronic necrotizing pulmonary aspergillosis was diagnosed. In case 2, calcium oxalate was detected and Aspergillus fumigatus was identified later. Thus, the presence of calcium oxalate in the sputum may be an important indicator for an A. fumigatus infection.
Collapse
Affiliation(s)
- Tsutomu Maeno
- Division of Infectious Disease, Tokyo Takanawa Hospital, Japan
| | - Masakazu Sasaki
- Department of Bacteriological Laboratory, Toho University, Japan ; Department of Microbiology and Infectious Disease, Toho University Faculty of Medicine, Japan
| | - Yasushi Shibue
- Department of Internal Medicine I, Hokkaido University Hospital, Japan ; Department of Microbiology and Infectious Disease, Toho University Faculty of Medicine, Japan
| | - Kazuyuki Mimura
- Division of Infectious Disease, Ebara Hospital, Japan ; Department of Microbiology and Infectious Disease, Toho University Faculty of Medicine, Japan
| | - Hideaki Oka
- Division of Infectious Disease, Tokyo Takanawa Hospital, Japan ; Department of Microbiology and Infectious Disease, Toho University Faculty of Medicine, Japan
| |
Collapse
|
22
|
Sato H, Suzuki Y, Ide M, Katoh T, Noda S, Ando K, Oike T, Yoshimoto Y, Okonogi N, Mimura K, Asao T, Kuwano H, Takashi N. HLA Class I Expression and Its Alteration by Preoperative Hyperthermo-Chemoradiation Therapy in Patients With Rectal Cancer. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.1248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
23
|
Suzuki Y, Yoshimoto Y, Oike T, Okonogi N, Ando K, Sato H, Noda S, Isono M, Mimura K, Kono K, Nakano T. Carbon-Ion Beam and X-Ray Irradiation Increase a Release of an Immune Mediator Protein High Mobility Group Box 1 (HMGB1) in Various Human Cancer Cell Lines. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.2245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
24
|
Koshiba M, Nakamura S, Mimura K, Senoo A, Karino G, Amemiya S, Miyaji T, Kunikata T, Yamanouchi H. Socio-emotional development evaluated by Behaviour Output analysis for Quantitative Emotional State Translation (BOUQUET): Towards early diagnosis of individuals with developmental disorders. ACTA ACUST UNITED AC 2013. [DOI: 10.13172/2052-7810-1-2-671] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
25
|
Abstract
Chemoradiotherapy can induce immunogenic cell death, triggering danger signals such as high-mobility group box 1 protein, and resulting in T-cell immunity. This concept can potentially be harnessed for clinical therapy to enhance tumor-specific immunity. There is however limited information to translate this theory directly in a clinical setting. In this review, we will discuss and summarize molecular and cellular mechanisms underlying immunogenic tumor cell death induced by chemoradiotherapy, with emphasis on a clinical translation.
Collapse
Affiliation(s)
- K Kono
- Department of Surgery, National University of Singapore, Singapore.
| | | | | |
Collapse
|
26
|
Kakigano A, Mimura K, Kanagawa T, Nakayama M, Kanayama T, Fujita S, Kinugasa-Taniguchi Y, Endo M, Tomimatsu T, Kimura T. Imbalance of angiogenic factors and avascular edematous cystic villi in a trisomy 13 pregnancy: a case report. Placenta 2013; 34:628-30. [PMID: 23611482 DOI: 10.1016/j.placenta.2013.04.001] [Citation(s) in RCA: 11] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2013] [Revised: 03/31/2013] [Accepted: 04/04/2013] [Indexed: 10/26/2022]
Abstract
The incidence of pre-eclampsia is significantly higher in trisomy 13 pregnancies than in normal pregnancies. Soluble fms-like tyrosine kinase-1 (sFlt-1), located on chromosome 13, is an anti-angiogenic molecule derived from the placenta and contributes to the pathogenesis of pre-eclampsia. Elevated sFlt-1 and reduced placental growth factor (PlGF) are associated with trisomy 13 pregnancies and may play a pathogenic role in the subsequent development of pre-eclampsia. Here we present a case of a trisomy 13 pregnancy without any signs of pre-eclampsia that showed alterations in circulating angiogenic factors and abnormal placental appearance. The placenta developed edematous changes and contained multiple small cysts. Histology of the placenta confirmed avascular edematous cystic villi and did not show the typical appearance of a partial mole or mesenchymal dysplasia. The sFlt-1/PlGF ratio in maternal serum (134) was much higher than that in gestational age-matched women who were normotensive (2.9-7.2; mean, 5.0). Immunostaining for Flt-1 and endoglin was more intense in our case compared with gestational age-matched controls, and at a similar level to a case of pre-eclampsia. Placental findings that showed avascular edematous cystic villi in our case may be associated with angiogenic imbalance involved in the pathogenesis of pre-eclampsia in trisomy 13 pregnancies.
Collapse
Affiliation(s)
- A Kakigano
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
27
|
Tomimatsu T, Fujime M, Kanayama T, Mimura K, Koyama S, Kanagawa T, Kimura T. Maternal arterial stiffness in normotensive pregnant women who subsequently deliver babies that are small for gestational age. Eur J Obstet Gynecol Reprod Biol 2013; 169:24-7. [PMID: 23434326 DOI: 10.1016/j.ejogrb.2013.01.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2012] [Revised: 07/30/2012] [Accepted: 01/27/2013] [Indexed: 11/18/2022]
Abstract
OBJECTIVE To assess the association between maternal arterial stiffness and delivery of a baby that is small for gestational age (SGA) in normotensive pregnant women. STUDY DESIGN Pulse wave analyses were performed to assess maternal arterial stiffness at 26-33 weeks of gestation in 40 normotensive women who subsequently delivered SGA babies (SGA group) and 111 normotensive women who delivered babies with normal growth (control group). RESULTS Central systolic pressure (CSP), augmentation index (AIx) and AIx at a heart rate of 75 beats/min (AIx-75) were significantly higher in the SGA group compared with the control group, but this was not the case for brachial systolic pressure, brachial diastolic pressure or brachial pulse pressure. Birth weight was significantly correlated with CSP (r=-0.26, p<0.01), AIx (r=-0.33, p<0.01) and AIx-75 (r=-0.27, p<0.01), but not with brachial systolic pressure, brachial diastolic pressure or brachial pulse pressure. CONCLUSION Increased arterial stiffness may be involved, in part, in the pathogenesis of SGA in normotensive women, suggesting an association between fetal growth and maternal endothelial function. Pulse wave analysis may be a clinically applicable method for assessment of maternal arterial stiffness, and may be more relevant to intrauterine fetal growth than conventional brachial blood pressure.
Collapse
Affiliation(s)
- T Tomimatsu
- Department of Obstetrics and Gynaecology, Osaka University Graduate School of Medicine, Osaka, Japan.
| | | | | | | | | | | | | |
Collapse
|
28
|
Yoshimoto Y, Suzuki Y, Mimura K, Kono K, Nakano T. Requirement of Antitumor Immunity and Enhancement by CTL-associated Antigen-4 Blockade on Therapeutic Efficacy of Radiation Therapy in a Mouse Tumor Model. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
29
|
Mimura K, Mochizuki Y, Nakahara Y, Kawamura T, Sasaki S, Katsuda R. [A case of primary lung cancer with swollen mediastinal lymph nodes due to pre-existing sarcoidosis]. Nihon Kokyuki Gakkai Zasshi 2011; 49:208-213. [PMID: 21485155] [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: 05/30/2023]
Abstract
A 69-year-old man, who had been followed up for sarcoidosis at another hospital from 10 years previously, was referred to our hospital because of a new lesion in the left upper lobe. A chest CT scan revealed a nodular lesion at the orifice of the left B3b and mediastinal lymphadenopathy. Bronchoscopic biopsy established a diagnosis of squamous cell carcinoma. Because there had been no distant metastasis and no change in size of the mediastinal lymph nodes over the previous 5 years, left upper lobectomy with lymph node dissection was performed. The histology of the resected tumor indicated a moderately-differentiated squamous cell carcinoma, and the dissected lymph nodes contained non-caseous epithelioid cell granuloma without metastasis. Thus, we made a final diagnosis of squamous cell carcinoma (pT1N0M0, stage IA) that complicated the sarcoidosis. Surgical resection can be the first option for lung cancer complicating sarcoidosis with mediastinal lymphadenopathy, because making a preoperative assessment of N status is difficult.
Collapse
Affiliation(s)
- Kazuyuki Mimura
- Department of Respiratory Medicine, National Hospital Organization Himeji Medical Center
| | | | | | | | | | | |
Collapse
|
30
|
Watanabe M, Kono K, Kawaguchi Y, Mizukami Y, Mimura K, Maruyama T, Izawa S, Fujii H. NK cell dysfunction with down-regulated CD16 and up-regulated CD56 molecules in patients with esophageal squamous cell carcinoma. Dis Esophagus 2010; 23:675-81. [PMID: 20545975 DOI: 10.1111/j.1442-2050.2010.01073.x] [Citation(s) in RCA: 35] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
NK cells can be divided into two subsets, CD56(dim) and CD56(bright) NK cells, based on their expression of CD56 and CD16. In the present study, we analyzed NK cell dysfunction in patients with esophageal squamous cell carcinoma (ESCC), with a particular focus on the expression of CD16 and CD56 molecules. Expression of CD16 and CD56, and the distribution of CD56(dim) or CD56(bright) NK cells gated on CD56(+)CD3(-) NK cells were compared between ESCC patients (n= 40) and healthy donors (n= 38). Purified NK cells were evaluated for Cetuximab-mediated antibody-dependent cellular cytotoxicity (ADCC) against epidermal growth factor receptor (EGFR)-expressing ESCC cell lines. Although there were no significant differences in the distribution of CD56(dim) and CD56(bright) NK cells between ESCC patients and healthy donors, down-regulated CD16 and up-regulated CD56 were significantly observed on NK cells of ESCC patients, paralleling the impairment of Cetuximab-mediated ADCC, in comparison with healthy donors. After patients received curative resections of ESCC, the down-regulated CD16 and up-regulated CD56 were significantly restored to the levels of healthy donors. Moreover, TGF-beta1 partially contributed to down-regulation of CD16 on NK cells. Down-regulated CD16 and up-regulated CD56 molecules on NK cells were observed in ESCC patients, resulting in NK cell dysfunction.
Collapse
Affiliation(s)
- M Watanabe
- First Department of Surgery, University of Yamanashi, Yamanashi, Japan
| | | | | | | | | | | | | | | |
Collapse
|
31
|
Maruyama T, Mimura K, Sato E, Watanabe M, Mizukami Y, Kawaguchi Y, Ando T, Kinouchi H, Fujii H, Kono K. Inverse correlation of HER2 with MHC class I expression on oesophageal squamous cell carcinoma. Br J Cancer 2010; 103:552-9. [PMID: 20628381 PMCID: PMC2939777 DOI: 10.1038/sj.bjc.6605772] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND As HER2 is expressed in 30% of oesophageal squamous cell carcinomas (ESCCs), T-cell-based immunotherapy and monoclonal antibodies targeted against HER2 are attractive, novel approaches for ESCCs. However, it was shown that there is an inverse correlation between HER2 and MHC class I expression on tumours. Thus, the correlation between HER2 and MHC class I expressions on ESCC was evaluated. METHODS Expressions of MHC class I and HER2 in ESCC tissues (n=80) and cell lines were assessed by immunohistochemistry, fluorescence in situ hybridisation (FISH), and flow cytometry. We investigated whether HER2 downregulation with small interfering RNA (siRNA) in ESCC cell lines could upregulate the expression of MHC class I and the antigen presentation machinery components, and could increase their sensitivity for tumour antigen-specific CTLs. RESULTS There was an inverse correlation between HER2 and MHC class I expressions in both tumour tissues and cell lines. Downregulation of HER2 with siRNA resulted in the upregulation of MHC class I expression, leading to increased CTL recognition by tumour antigen-specific CTLs. CONCLUSION HER2-overexpressing ESCC tumour cells showed a reduced sensitivity for CTLs through the downregulation of MHC class I.
Collapse
Affiliation(s)
- T Maruyama
- First Department of Surgery, University of Yamanashi, 1110 Shimokato, Chuo-city, Yamanashi 409-3898, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
32
|
Maruyama T, Kono K, Izawa S, Mizukami Y, Kawaguchi Y, Mimura K, Watanabe M, Fujii H. CCL17 and CCL22 chemokines within tumor microenvironment are related to infiltration of regulatory T cells in esophageal squamous cell carcinoma. Dis Esophagus 2010; 23:422-9. [PMID: 20002703 DOI: 10.1111/j.1442-2050.2009.01029.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
It has been reported that an increased population of regulatory T cells (T-regs) is one of the reasons for impaired anti-tumor immunity. We investigated the frequency of Foxp3(+) T-regs in tumor-infiltrating lymphocytes (TILs) and peripheral blood lymphocytes (PBLs) of patients with esophageal squamous cell carcinoma (ESCC). Furthermore, in order to elucidate the mechanisms behind T-regs accumulation within tumors, we evaluated the relationship between CCL17 or CCL22 expression and the frequency of Foxp3(+) T-regs. CD4(+)CD25(+)Foxp3(+) T-regs as a percentage of CD4(+) cells were counted by flow cytometry. The frequency of CCL17(+) or CCL22(+) cells among CD14(+) cells in tumors was also evaluated by flow cytometry. Moreover, an in vitro migration assay using T-regs derived from ESCC was performed in the presence of CCL17 or CCL22. The frequency of Foxp3(+) T-regs in TILs was significantly higher than that in the normal esophageal mucosa (24.6 +/- 10.0 vs 7.1 +/- 5.9%, P < 0.01). The frequency of Foxp3(+) T-regs in PBLs of ESCC patients was significantly higher than that in normal healthy donors (7.0 +/- 4.2 vs 2.5 +/- 1.0%, P < 0.01). Furthermore, the frequency of CCL17(+) or CCL22(+) cells among CD14(+) cells within tumors was significantly higher than that of normal esophageal mucosa, and there was a significant correlation between the frequency of CCL17(+) or CCL22(+) cells and Foxp3(+) T-regs in TILs. In addition, the in vitro migration assay indicated that T-regs were significantly induced to migrate by CCL17 or CCL22. In conclusion, CCL17 and CCL22 within the tumor are related to the increased population of Foxp3(+) T-regs in ESCC.
Collapse
Affiliation(s)
- T Maruyama
- First Department of Surgery, University of Yamanashi, Chuo City, Yamanashi, Japan
| | | | | | | | | | | | | | | |
Collapse
|
33
|
Tskitishvili E, Sharentuya N, Temma-Asano K, Mimura K, Kinugasa-Taniguchi Y, Kanagawa T, Fukuda H, Kimura T, Tomimatsu T, Shimoya K. Oxidative stress-induced S100B protein from placenta and amnion affects soluble Endoglin release from endothelial cells. Mol Hum Reprod 2010; 16:188-199. [DOI: 10.1093/molehr/gap104] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
|
34
|
|
35
|
Miyagawa T, Mochizuki Y, Nakahara Y, Kawamura T, Sasaki S, Morimoto A, Tsukamoto H, Mayumi T, Tabata H, Okada H, Watanabe E, Gotou T, Mimura K, Katsuda R. [A case of severe radiation pneumonitis--a trial of plasma exchange]. Nihon Kokyuki Gakkai Zasshi 2009; 47:481-485. [PMID: 19601523] [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: 05/28/2023]
Abstract
A 77-year-old man underwent radiotherapy for the squamous cell carcinoma of the right lung. Two months after the 60Gy/30fr irradiation was completed, he complained of dyspnea and his chest X-ray showed ground glass opacities and reticular shadows in both lung fields. Severe radiation pneumonitis was diagnosed. Two grams of methylprednisolone did not improve his symptoms and on the next day his hypoxemia worsened. We then tried plasma exchange because of his critical status. His respiratory status improved rapidly after plasma exchange and his chest X-ray showed remarkable improvement 10 days later. We think this case suggests the effectiveness of plasma exchange for severe radiation pneumonitis.
Collapse
Affiliation(s)
- Tomoko Miyagawa
- Department of Respiratory Medicine, National Hospital Organization Himeji Medical Center
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Tskitishvili E, Tomimatsu T, Kanagawa T, Sawada K, Kinugasa Y, Mimura K, Kimura T. Amniotic fluid 'sludge' detected in patients with subchorionic hematoma: a report of two cases. Ultrasound Obstet Gynecol 2009; 33:484-486. [PMID: 19308930 DOI: 10.1002/uog.6348] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Amniotic fluid 'sludge' is defined as the presence of dense aggregates of particulate matter in close proximity to the internal cervical os. It is of clinical significance in asymptomatic patients at high risk for spontaneous delivery, and in patients with preterm labor and intact membranes. Subchorionic hematoma is another ultrasound finding that is associated with a higher incidence of threatened miscarriage and preterm delivery. We report two cases of occurrence of amniotic fluid sludge in patients with previously detected large subchorionic hematoma. In the first case subchorionic hematoma and amniotic fluid sludge were detected by ultrasonography at 13 + 1 and 18 + 6 weeks' gestation, respectively, followed by preterm premature rupture of membranes, placental abruption and emergency Cesarean section. In the second case subchorionic hematoma and amniotic fluid sludge were detected by ultrasound at 11 + 3 and 15 + 5 weeks' gestation, respectively, followed by miscarriage with histological chorioamnionitis. The coincidence of subchorionic hematoma and amniotic fluid sludge in these cases points to a possible connection between these two significant ultrasound findings.
Collapse
Affiliation(s)
- E Tskitishvili
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Suita City, Osaka, Japan.
| | | | | | | | | | | | | |
Collapse
|
37
|
Tskitishvili E, Komoto Y, Kinugasa Y, Kanagawa T, Song M, Mimura K, Tomimatsu T, Kimura T, Shimoya K. The human tumor-associated antigen RCAS1 in pregnancies complicated by pre-eclampsia. J Reprod Immunol 2008; 77:100-8. [PMID: 17604121 DOI: 10.1016/j.jri.2007.05.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2007] [Revised: 04/26/2007] [Accepted: 05/16/2007] [Indexed: 01/27/2023]
Abstract
The human tumor-associated antigen RCAS1 (receptor-binding cancer antigen expressed on SiSo cells) is considered to play a role in the escape of tumor cells from immune surveillance and, at the same time, participates in the inhibition of the maternal immune response during pregnancy. The aim of our study was to investigate the expression of tumor-associated RCAS1 protein in the placenta and amniotic membranes and to assess and compare its concentration in amniotic fluid, maternal and cord blood sera in pregnancies complicated by pre-eclampsia. Samples were obtained from women with pre-eclampsia (N=9), pre-eclampsia with IUGR (N=4), normotensive IUGR (N=7) and healthy term controls (N=25) after delivery. Placentas were studied by immunohistochemistry, Western blot analysis and real-time (RT)-PCR. For assessment of RCAS1 protein concentrations in biological fluids, ELISA was performed. RCAS1 mRNA expression in the placentas of pre-eclamptic patients was significantly lower than in controls (p<0.01). The maternal blood serum RCAS1 protein concentration in the pre-eclampsia cases was also significantly lower than in controls (p=0.0207). The other study groups did not differ significantly. This study reveals the possible role of the RCAS1 protein in the development of pre-eclampsia through an immunological pathway.
Collapse
Affiliation(s)
- E Tskitishvili
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Suita City, Osaka, Japan.
| | | | | | | | | | | | | | | | | |
Collapse
|
38
|
Hayashi T, Kinpara M, Wang JF, Mimura K, Isshiki M. Growth of ultra-high purity PbI2 single crystal: (1) Preparation of high purity PbI2. Cryst Res Technol 2008. [DOI: 10.1002/crat.200711051] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
39
|
Arakawa K, Ono K, Isshiki M, Mimura K, Uchikoshi M, Mori H. Observation of the One-Dimensional Diffusion of Nanometer-Sized Dislocation Loops. Science 2007; 318:956-9. [PMID: 17991859 DOI: 10.1126/science.1145386] [Citation(s) in RCA: 282] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- K Arakawa
- Research Center for Ultra-High Voltage Electron Microscopy, Osaka University, 7-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan.
| | | | | | | | | | | |
Collapse
|
40
|
Kawaguchi Y, Kono K, Mimura K, Mitsui F, Sugai H, Akaike H, Fujii H. Targeting EGFR and HER-2 with cetuximab- and trastuzumab-mediated immunotherapy in oesophageal squamous cell carcinoma. Br J Cancer 2007; 97:494-501. [PMID: 17622245 PMCID: PMC2360355 DOI: 10.1038/sj.bjc.6603885] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
We previously reported that oesophageal squamous cell carcinoma (SCC) had a relatively high incidence of EGFR and HER-2 overexpression. Thus, anti-HER family targeting may become a promising approach to treat oesophageal SCC. In the present study, we investigated (a) the distribution of EGFR and HER-2 expression in oesophageal SCC (n=66) detected by immunohistochemistry and (b) cetuximab- and/or trastuzumab-mediated biological activity (antiproliferative effect by the MTT assay, apoptosis-inducing activity by the annexin V/propidium iodide assay, and antibody-dependent cellular cytotoxicity (ADCC) by the 51Cr-release assay) against oesophageal SCC cell lines with various levels of EGFR and HER-2. Twelve of the 66 patients (18%) showed both EGFR- and HER-2 expression. Out of both EGFR- and HER-2-positive cases, nine cases (75%) showed EGFR and HER-2 expression in individually distinct regions. Furthermore, the combination of cetuximab and trastuzumab could induce synergistic antiproliferative effects and additional ADCC activities against not all, but several oesophageal SCC cell lines with EGFR and HER-2 expression. The combination of cetuximab and trastuzumab may be useful in the treatment of oesophageal SCC with EGFR and HER-2 expression.
Collapse
MESH Headings
- Aged
- Aged, 80 and over
- Antibodies, Monoclonal/administration & dosage
- Antibodies, Monoclonal/pharmacology
- Antibodies, Monoclonal, Humanized
- Antineoplastic Combined Chemotherapy Protocols/pharmacology
- Antineoplastic Combined Chemotherapy Protocols/therapeutic use
- Carcinoma, Squamous Cell/genetics
- Carcinoma, Squamous Cell/mortality
- Carcinoma, Squamous Cell/therapy
- Cell Proliferation/drug effects
- Cetuximab
- ErbB Receptors/antagonists & inhibitors
- ErbB Receptors/genetics
- ErbB Receptors/immunology
- Esophageal Neoplasms/genetics
- Esophageal Neoplasms/mortality
- Esophageal Neoplasms/therapy
- Female
- Gene Expression Regulation, Neoplastic
- Humans
- Immunotherapy
- Male
- Middle Aged
- Receptor, ErbB-2/antagonists & inhibitors
- Receptor, ErbB-2/genetics
- Receptor, ErbB-2/immunology
- Survival Analysis
- Trastuzumab
- Tumor Cells, Cultured
Collapse
Affiliation(s)
- Y Kawaguchi
- First Department of Surgery, University of Yamanashi, 1110 Shimokato, Chuo-city, Yamanashi 409-3898, Japan
| | - K Kono
- First Department of Surgery, University of Yamanashi, 1110 Shimokato, Chuo-city, Yamanashi 409-3898, Japan
- E-mail:
| | - K Mimura
- First Department of Surgery, University of Yamanashi, 1110 Shimokato, Chuo-city, Yamanashi 409-3898, Japan
| | - F Mitsui
- First Department of Surgery, University of Yamanashi, 1110 Shimokato, Chuo-city, Yamanashi 409-3898, Japan
| | - H Sugai
- First Department of Surgery, University of Yamanashi, 1110 Shimokato, Chuo-city, Yamanashi 409-3898, Japan
| | - H Akaike
- First Department of Surgery, University of Yamanashi, 1110 Shimokato, Chuo-city, Yamanashi 409-3898, Japan
| | - H Fujii
- First Department of Surgery, University of Yamanashi, 1110 Shimokato, Chuo-city, Yamanashi 409-3898, Japan
| |
Collapse
|
41
|
Taguchi Y, Yamamoto K, Mimura K, Ichikawa K, Kitamoto K, Aita O, Ishibashi H, Takata Y, Horiba K, Shin S, Yabashi M, Tamasaku K, Nishino Y, Miwa D, Ishikawa T, Ikenaga E, Kobayashi K. Ir 4f hard X-ray photoemission spectrum of CuIr2S4. Radiat Phys Chem Oxf Engl 1993 2006. [DOI: 10.1016/j.radphyschem.2005.07.058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
42
|
Mimura K, Ito H. Readily decomposed thermosetting resins for recovering and reusing resin-embedded materials. J Appl Polym Sci 2006. [DOI: 10.1002/app.24212] [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: 11/06/2022]
|
43
|
Mimura K, Kono K, Hanawa M, Mitsui F, Sugai H, Miyagawa N, Ooi A, Fujii H. Frequencies of HER-2/neu expression and gene amplification in patients with oesophageal squamous cell carcinoma. Br J Cancer 2005; 92:1253-60. [PMID: 15785739 PMCID: PMC2361961 DOI: 10.1038/sj.bjc.6602499] [Citation(s) in RCA: 92] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
The utilisation of antitumour T cells induced by cancer vaccination with HER-2 peptides or antibodies (Herceptin) against HER-2, as immunotherapy for oesophageal cancer, is a novel and attractive approach. It is important to clarify the frequencies of HER-2 expression and gene amplification in patients with oesophageal squamous cell carcinoma (SCC) and to evaluate the relationship between HER-2 status and HLA haplotype, since the candidates for HER-2 peptide-based vaccination are restricted to a certain HLA haplotype. We determined the frequency of HER-2 expression using the HercepTest for immunohistochemistry and HER-2 gene amplification by fluorescence in situ hybridisation (FISH) assay in oesophageal SCC (n=66). HER-2-positive tumours (1+/2+/3+) analysed by a HercepTest were observed in 30.3% of all the patients and HER-2 gene amplification evaluated by FISH was observed in 11.0% of all the patients, in which all HercepTest (3+) tumours were found to have gene amplification and three of six moderately positive (2+) tumours showed gene amplification. Furthermore, HER-2-positive cells were present more diffusely and were larger within each tumour in the patients who were HercepTest 3+ than those who were HercepTest 1+. Moreover, the survival rate in HER-2-positive group was significantly worse than that in HER-2-negative group. Also, the survival rate in the patients with HER-2 gene amplification was significantly worse than that without HER-2 gene amplification. In addition, oesophageal SCC patients with both HLA-A24-positive and HER-2-positive tumours (1+/2+/3+) accounted for 26% of these cases, and both HLA-A2- and HER-2-positive tumours accounted for 18% of them.
Collapse
Affiliation(s)
- K Mimura
- First Department of Surgery, University of Yamanashi, 1110 Tamaho, Yamanashi 409-3898, Japan
| | - K Kono
- First Department of Surgery, University of Yamanashi, 1110 Tamaho, Yamanashi 409-3898, Japan
- First Department of Surgery, University of Yamanashi, 1110 Tamaho, Yamanashi 409-3898, Japan. E-mail:
| | - M Hanawa
- First Department of Pathology, University of Yamanashi, Yamanashi 409-3898, Japan
| | - F Mitsui
- First Department of Surgery, University of Yamanashi, 1110 Tamaho, Yamanashi 409-3898, Japan
- First Department of Pathology, University of Yamanashi, Yamanashi 409-3898, Japan
| | - H Sugai
- First Department of Surgery, University of Yamanashi, 1110 Tamaho, Yamanashi 409-3898, Japan
| | - N Miyagawa
- First Department of Surgery, University of Yamanashi, 1110 Tamaho, Yamanashi 409-3898, Japan
| | - A Ooi
- First Department of Pathology, University of Yamanashi, Yamanashi 409-3898, Japan
| | - H Fujii
- First Department of Surgery, University of Yamanashi, 1110 Tamaho, Yamanashi 409-3898, Japan
| |
Collapse
|
44
|
Tanimura S, Mimura K, Umeda T. New testing techniques to obtain tensile stress-strain curves for a wide range of strain rates. ACTA ACUST UNITED AC 2003. [DOI: 10.1051/jp4:20020724] [Citation(s) in RCA: 10] [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] [Indexed: 11/14/2022]
|
45
|
|
46
|
|
47
|
Mitoma Y, Nagashima S, Simion C, Simion AM, Yamada T, Mimura K, Ishimoto K, Tashiro M. Dehalogenation of aromatic halides using metallic calcium in ethanol. Environ Sci Technol 2001; 35:4145-4148. [PMID: 11686379 DOI: 10.1021/es010716+] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The scope and limitations of the dehalogenation of aromatic halides 1 and 4a-p using metallic calcium in ethanol at room temperature were revealed. The cleavage of the carbon-chlorine bond on the aromatic ring bearing electron-donating group was difficult compared to the one bearing electron-withdrawing group. Moreover, we applied this method to the dechlorination of polychlorinated biphenyls (PCBs) in transformer oil. It was also found that the dechlorination took place easily under mild conditions. The existence of PCBs residue in the reaction at room temperature was less than 0.04% according to the GC-MS analysis. The chlorine was identified as calcium chloride.
Collapse
Affiliation(s)
- Y Mitoma
- Tohwa Institute for Science, and Department of Industrial Chemistry, Faculty of Engineering, Tohwa University, Fukuoka, Japan.
| | | | | | | | | | | | | | | |
Collapse
|
48
|
Shigematsu R, Tanaka K, Holland G, Nakagaichi M, Chang M, Takeshima N, Noda F, Tanaka Y, Mimura K. Validation of the functional fitness age (FFA) index in older Japanese women. Aging Clin Exp Res 2001; 13:385-90. [PMID: 11820712 DOI: 10.1007/bf03351507] [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: 11/24/2022]
Abstract
Functional fitness age (FFA), which we previously described, is a measure of functional age that reflects a person's overall physical ability to complete daily tasks such as preparing meals and performing various household chores. The purpose of this study was to validate FFA in two elderly populations: 1) older subjects from different communities, and 2) older subjects participating in an exercise intervention program. FFA was calculated from 4 performance tests: performing arm curls; moving beans with chopsticks; demonstrating functional reach; and sitting and walking around two cones. The first study group was selected from 4 different communities (N=127), and was subdivided into a less active group (N=87) and an active group (N=40). The results of the 4 tests for the less active group were not significantly different from those for the original validation group used in developing the FFA equation. The FFA of the less active group (71.1+/-7.7 yrs) was not different from their chronological age (70.4+/-6.6 yrs). In the active group, except for the arm curls, test scores were significantly higher than those of the original validation group. The FFA of the active group (66.2+/-5.1 yrs) was significantly younger than their chronological age (70.9+/-4.2 yrs). Another group of 14 older women (79.5+/-3.9 yrs) was recruited for pre- and post-training testing. After the 3-month exercise program, they showed significant improvements in sitting and walking around two cones and functional reach; their FFA decreased significantly from 81.5+/-5.0 yrs to 78.3+/-4.5 yrs. The control group selected from the same community (N=16, 79.8+/-5.3 yrs) showed no significant changes in the 4 performance tests, and their FFA remained unchanged. These results indicate that our FFA is highly cross-validated for different Japanese communities, and is sensitive to changes associated with participation in an exercise intervention program.
Collapse
Affiliation(s)
- R Shigematsu
- Institute of Health and Sport Sciences and Center for TARA (Tsukuba Advanced Research Alliance), University of Tsukuba, Ibaraki, Japan.
| | | | | | | | | | | | | | | | | |
Collapse
|
49
|
Murawaki Y, Koda M, Okamoto K, Mimura K, Kawasaki H. Diagnostic value of serum type IV collagen test in comparison with platelet count for predicting the fibrotic stage in patients with chronic hepatitis C. J Gastroenterol Hepatol 2001; 16:777-81. [PMID: 11446886 DOI: 10.1046/j.1440-1746.2001.02515.x] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.7] [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: 01/02/2023]
Abstract
BACKGROUND AND AIM The serum type IV collagen test is now used as a diagnostic aid for the detection of liver fibrosis and cirrhosis. Recently, a platelet count has been reported to be a useful marker for assessing the fibrotic stage in chronic hepatitis C. The aim of this study was to compare the usefulness of the serum type IV collagen test and platelet count for diagnosing the fibrotic stage in chronic hepatitis C patients. METHODS The diagnostic values were assessed by the use of receiver operating characteristic (ROC) analysis in 165 patients with chronic hepatitis C, with the exception of those patients with cirrhosis. RESULTS The serum type IV collagen level increased, and the platelet count decreased significantly with the progression of fibrosis staging. As judged from ROC curves, the serum type IV collagen test was more useful than the platelet count for differentiating moderate or severe fibrosis from no or mild fibrosis. At a cut-off value of 110 ng/mL, the serum type IV collagen test had an overall diagnostic accuracy of 75%, while at a cut-off value of 16 x 10(4)/mm(3), the platelet count had a diagnostic accuracy of 70%. The serum type IV collagen test and platelet count were similar in differentiating severe fibrosis from no, mild or moderate fibrosis. Both serum type IV collagen (at a cut-off value of 130 ng/mL) and platelet count (at a cut-off value of 14 x 10(4)/mm(3)) had a diagnostic accuracy of 73%. CONCLUSION The serum type IV collagen test was slightly superior to the platelet count for assessing the fibrotic stage in patients with chronic hepatitis C.
Collapse
Affiliation(s)
- Y Murawaki
- Second Department of Internal Medicine, Tottori University School of Medicine, Yonago, Japan.
| | | | | | | | | |
Collapse
|
50
|
Murawaki Y, Ikuta Y, Okamoto K, Mimura K, Koda M, Kawasaki H. Plasma matrix metalloproteinase-9 (gelatinase B) in patients with hepatocellular carcinoma. Res Commun Mol Pathol Pharmacol 2000; 108:351-7. [PMID: 11958288] [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: 04/18/2023]
Abstract
Increased plasma levels of matrix metalloproteinase (MMP)-9 have been shown in cancerous diseases including hepatocellular carcinoma (HCC). Our present aim was to examine whether the measurement of plasma MMP-9 concentration is clinically useful for assessing or monitoring HCC patients. We measured the plasma MMP-9 concentrations in 47 HCC patients, and compared the results with the clinicopathologic features. The plasma MMP-9 levels in patients with HCC were significantly higher than those in the normal controls. The plasma levels of MMP-9 were not related to the size of HCC tumor, the grade of histological differentiation and the serum alpha-fetoprotein level. The plasma levels of MMP-9 were not significantly changed after the effective treatment of HCC tumors. In conclusion, the plasma MMP-9 test was of little value for assessing or monitoring HCC patients.
Collapse
Affiliation(s)
- Y Murawaki
- Second Department of Internal Medicine, Tottori University School of Medicine, Yonago, Japan
| | | | | | | | | | | |
Collapse
|