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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.
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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
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Mimura K, Shimomura A, Watanabe K, Koda H, Nakayama K, Kitagawa D, Shimizu C. Severe cytopenia during adjuvant chemotherapy for early breast cancer in a patient with idiopathic CD4+ lymphocytopenia. Oncol Lett 2023; 26:357. [PMID: 37545613 PMCID: PMC10398621 DOI: 10.3892/ol.2023.13943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 06/22/2023] [Indexed: 08/08/2023] Open
Abstract
Idiopathic CD4+ lymphocytopenia (ICL) is a rare immunodeficiency disorder characterized by decreased CD4+ T-cell counts in the absence of human immunodeficiency virus (HIV) infection. Similar to HIV infection, ICL is commonly associated with acquired immunodeficiency syndrome-defining cancers, such as Kaposi sarcoma, non-Hodgkin lymphoma and cervical cancer; however, the presentation of breast cancer in a patient with ICL is rare. The current study presented the clinical course of a patient with early breast cancer and ICL. Following surgery, the patient underwent adjuvant chemotherapy comprising doxorubicin plus cyclophosphamide, followed by paclitaxel. The patient's immunodeficiency status required the prophylactic administration of clarithromycin, trimethoprim-sulfamethoxazole and valganciclovir. Throughout the course of chemotherapy, the patient experienced severe complications of febrile neutropenia, anemia, neutropenia and thrombocytopenia, and was eventually forced to discontinue anticancer chemotherapy, as the relative dose intensity (RDI) could not be maintained. Similar hematological complications and reduced RDI, leading to worse outcomes, are also common in patients with HIV infection receiving chemotherapy, suggesting that CD4+ T cell-deficient patients are prone to developing cytopenia during chemotherapy. The present study demonstrates the importance of further data accumulation in patients with ICL with cancer and the development of a methodology for maintaining the RDI.
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Affiliation(s)
- Kaito Mimura
- Department of Breast and Medical Oncology, National Center for Global Health and Medicine, Tokyo 162-8655, Japan
| | - Akihiko Shimomura
- Department of Breast and Medical Oncology, National Center for Global Health and Medicine, Tokyo 162-8655, Japan
- National Center for Global Health and Medicine Research Course in Advanced Medical Specialties, Juntendo University Cooperative Graduate School, Tokyo 113-8421, Japan
| | - Koji Watanabe
- AIDS Clinical Center, National Center for Global Health and Medicine, Tokyo 162-8655, Japan
| | - Hanako Koda
- Department of Surgery, National Center for Global Health and Medicine, Tokyo 162-8655, Japan
| | - Kanako Nakayama
- Department of Breast Surgical Oncology, National Center for Global Health and Medicine, Tokyo 162-8655, Japan
| | - Dai Kitagawa
- Department of Breast Surgical Oncology, National Center for Global Health and Medicine, Tokyo 162-8655, Japan
| | - Chikako Shimizu
- Department of Breast and Medical Oncology, National Center for Global Health and Medicine, Tokyo 162-8655, Japan
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Mimura K, Sakamaki JI, Morishita H, Kawazu M, Mano H, Mizushima N. Genome-wide CRISPR screening reveals nucleotide synthesis negatively regulates autophagy. J Biol Chem 2021; 296:100780. [PMID: 34000301 PMCID: PMC8191307 DOI: 10.1016/j.jbc.2021.100780] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Revised: 04/12/2021] [Accepted: 05/12/2021] [Indexed: 02/06/2023] Open
Abstract
Macroautophagy (hereafter, autophagy) is a process that directs the degradation of cytoplasmic material in lysosomes. In addition to its homeostatic roles, autophagy undergoes dynamic positive and negative regulation in response to multiple forms of cellular stress, thus enabling the survival of cells. However, the precise mechanisms of autophagy regulation are not fully understood. To identify potential negative regulators of autophagy, we performed a genome-wide CRISPR screen using the quantitative autophagic flux reporter GFP-LC3-RFP. We identified phosphoribosylformylglycinamidine synthase, a component of the de novo purine synthesis pathway, as one such negative regulator of autophagy. Autophagy was activated in cells lacking phosphoribosylformylglycinamidine synthase or phosphoribosyl pyrophosphate amidotransferase, another de novo purine synthesis enzyme, or treated with methotrexate when exogenous levels of purines were insufficient. Purine starvation-induced autophagy activation was concomitant with mammalian target of rapamycin complex 1 (mTORC1) suppression and was profoundly suppressed in cells deficient for tuberous sclerosis complex 2, which negatively regulates mTORC1 through inhibition of Ras homolog enriched in brain, suggesting that purines regulate autophagy through the tuberous sclerosis complex-Ras homolog enriched in brain-mTORC1 signaling axis. Moreover, depletion of the pyrimidine synthesis enzymes carbamoyl-phosphate synthetase 2, aspartate transcarbamylase, and dihydroorotase and dihydroorotate dehydrogenase activated autophagy as well, although mTORC1 activity was not altered by pyrimidine shortage. These results suggest a different mechanism of autophagy induction between purine and pyrimidine starvation. These findings provide novel insights into the regulation of autophagy by nucleotides and possibly the role of autophagy in nucleotide metabolism, leading to further developing anticancer strategies involving nucleotide synthesis and autophagy.
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Affiliation(s)
- Kaito Mimura
- Department of Biochemistry and Molecular Biology, Graduate School and Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Jun-Ichi Sakamaki
- Department of Biochemistry and Molecular Biology, Graduate School and Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hideaki Morishita
- Department of Biochemistry and Molecular Biology, Graduate School and Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Masahito Kawazu
- Division of Cellular Signaling, National Cancer Center Research Institute, Tokyo, Japan
| | - Hiroyuki Mano
- Division of Cellular Signaling, National Cancer Center Research Institute, Tokyo, Japan
| | - Noboru Mizushima
- Department of Biochemistry and Molecular Biology, Graduate School and Faculty of Medicine, The University of Tokyo, Tokyo, Japan.
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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
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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
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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.
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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
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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
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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]
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Morita K, Hama Y, Izume T, Tamura N, Ueno T, Yamashita Y, Sakamaki Y, Mimura K, Morishita H, Shihoya W, Nureki O, Mano H, Mizushima N. Genome-wide CRISPR screen identifies TMEM41B as a gene required for autophagosome formation. J Cell Biol 2018; 217:3817-3828. [PMID: 30093494 PMCID: PMC6219718 DOI: 10.1083/jcb.201804132] [Citation(s) in RCA: 139] [Impact Index Per Article: 23.2] [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: 04/20/2018] [Revised: 07/19/2018] [Accepted: 07/27/2018] [Indexed: 01/22/2023] Open
Abstract
Macroautophagy is an intracellular degradation process that requires multiple autophagy-related (ATG) genes. In this study, we performed a genome-wide screen using the autophagic flux reporter GFP-LC3-RFP and identified TMEM41B as a novel ATG gene. TMEM41B is a multispanning membrane protein localized in the endoplasmic reticulum (ER). It has a conserved domain also found in vacuole membrane protein 1 (VMP1), another ER multispanning membrane protein essential for autophagy, yeast Tvp38, and the bacterial DedA family of putative half-transporters. Deletion of TMEM41B blocked the formation of autophagosomes at an early step, causing accumulation of ATG proteins and small vesicles but not elongating autophagosome-like structures. Furthermore, lipid droplets accumulated in TMEM41B-knockout (KO) cells. The phenotype of TMEM41B-KO cells resembled those of VMP1-KO cells. Indeed, TMEM41B and VMP1 formed a complex in vivo and in vitro, and overexpression of VMP1 restored autophagic flux in TMEM41B-KO cells. These results suggest that TMEM41B and VMP1 function together at an early step of autophagosome formation.
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Affiliation(s)
- Keigo Morita
- Department of Biochemistry and Molecular Biology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yutaro Hama
- Department of Biochemistry and Molecular Biology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Tamaki Izume
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, Japan
| | - Norito Tamura
- Department of Biochemistry and Molecular Biology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Toshihide Ueno
- Department of Cellular Signaling, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yoshihiro Yamashita
- Department of Cellular Signaling, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yuriko Sakamaki
- Research Core, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kaito Mimura
- Department of Biochemistry and Molecular Biology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hideaki Morishita
- Department of Biochemistry and Molecular Biology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Wataru Shihoya
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, Japan
| | - Osamu Nureki
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, Japan
| | - Hiroyuki Mano
- Department of Cellular Signaling, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Noboru Mizushima
- Department of Biochemistry and Molecular Biology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
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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
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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.
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Affiliation(s)
- A Rousuli
- Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
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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]
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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]
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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.
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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.
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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.
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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
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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.
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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
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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]
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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]
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20
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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]
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21
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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.
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Affiliation(s)
- K Kono
- Department of Surgery, National University of Singapore, Singapore.
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22
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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.
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Affiliation(s)
- A Kakigano
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
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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.
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Affiliation(s)
- T Tomimatsu
- Department of Obstetrics and Gynaecology, Osaka University Graduate School of Medicine, Osaka, Japan.
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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]
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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.
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Affiliation(s)
- M Watanabe
- First Department of Surgery, University of Yamanashi, Yamanashi, Japan
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26
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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.
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Affiliation(s)
- T Maruyama
- First Department of Surgery, University of Yamanashi, 1110 Shimokato, Chuo-city, Yamanashi 409-3898, Japan
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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.
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Affiliation(s)
- T Maruyama
- First Department of Surgery, University of Yamanashi, Chuo City, Yamanashi, Japan
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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
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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.
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Affiliation(s)
- E Tskitishvili
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Suita City, Osaka, Japan.
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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.
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Affiliation(s)
- E Tskitishvili
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Suita City, Osaka, Japan.
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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]
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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.
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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.
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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
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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
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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]
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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]
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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.
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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
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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]
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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.
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Affiliation(s)
- Y Mitoma
- Tohwa Institute for Science, and Department of Industrial Chemistry, Faculty of Engineering, Tohwa University, Fukuoka, Japan.
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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.
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Affiliation(s)
- R Shigematsu
- Institute of Health and Sport Sciences and Center for TARA (Tsukuba Advanced Research Alliance), University of Tsukuba, Ibaraki, Japan.
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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.
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Affiliation(s)
- Y Murawaki
- Second Department of Internal Medicine, Tottori University School of Medicine, Yonago, Japan.
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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.
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Affiliation(s)
- Y Murawaki
- Second Department of Internal Medicine, Tottori University School of Medicine, Yonago, Japan
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Abstract
The compositions of ester- and amide-linked fatty acids from ceramides of human vernix caseosa were described with emphasis on the distribution of the branched-chain fatty acid (BCFA). Two novel ceramides were isolated from vernix caseosa in the course of this study: the acylated type of esterified alpha-OH-hydroxyacid/sphingosine ceramide (Cer[EAS]) and nonacylated type of non-OH fatty acid/hydroxysphingosine ceramide (Cer[NH]). Their chemical structures were identified by nuclear magnetic resonance and chemical procedure. The Cer[EAS] was an acylceramide and consisted of the highest concentrations of ester- and amide-linked BCFA (62 and 67%, respectively). The iso- or anteiso-branching structures of the aliphatic chains were confirmed by the mass spectra of their picolinyl or pyrrolidide derivatives. As a whole, amide-linked fatty acids of ceramides 1-7 and Cer[NH] were normal types of straight-chain fatty acids with or without alpha- or omega-hydroxylation. The BCFA concentrations of amide-linked fatty acids in these ceramides (ceramides 1-7 and Cer[NH]) were low and less than 10%. The BCFA thus occurred exclusively in a novel acylceramide of Cer[EAS] in the vernix caseosa.
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Affiliation(s)
- H Oku
- Laboratory of Applied Biochemistry, Faculty of Agriculture, University of the Ryukyus, Okinawa-Ken, Japan.
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Kitamura N, Ota Y, Mimura K. Effects of diisopropylamine dichloroacetate on proliferation and differentiation of normal human keratinocytes in vitro. Skin Pharmacol Appl Skin Physiol 1999; 12:317-25. [PMID: 10545828 DOI: 10.1159/000029893] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
We found that diisopropylamine dichloroacetate (DADA), known as a vasodilator, enhanced growth of keratinocytes in 4 days culture at 1-30 microg/ml, and such promoting effects of cell proliferation were reconfirmed by measuring DNA synthesis using [(3)H]thymidine incorporation. On the other hand, this substance enhanced synthesis of keratin K1, a potent marker of differentiation in keratinocytes, at 1-100 microg/ml in low calcium (0.1 mM) or high calcium medium (1. 25 mM). Moreover, the formation of cornified envelope, another potent marker of differentiation in keratinocytes, was also promoted by DADA at a concentration of 0.1-10 mM which includes valid concentration of DADA for the enhancement of keratin K1 formation (1-100 microg/ml: 0.05-0.5 mM DADA). These results indicate that DADA has a double function, enhancement of both proliferation and differentiation of cells, which could be linked to the turnover of skin epidermis. Furthermore, in order to analyze the effect of DADA on keratinocytes, we examined the effects of each component of this substance, diisopropylamine (DIA) and dichloroacetate (DCA), on keratinocytes. As the result of these investigations, evidence was found that DCA was effective on enhancement of cell growth, but DIA was ineffective. Moreover, we found that DCA was effective on keratinocyte differentiation by evaluating the enhancement of a differentiation marker, formation of cornified envelopes, within 10 mM, while DIA was not effective. Therefore, we concluded that only DCA was an active component of the DADA molecule for the proliferation and the differentiation of keratinocytes in vitro.
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Affiliation(s)
- N Kitamura
- Basic Research Laboratory, Kanebo Ltd., Odawara, Japan.
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Mimura K, Harada M, Sumiyoshi S, Tohya G, Takagi M, Fujita E, Takata A, Tatetsu S. [Long-term follow-up study on sequelae of carbon monoxide poisoning; serial investigation 33 years after poisoning]. Seishin Shinkeigaku Zasshi 1999; 101:592-618. [PMID: 10502996] [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: 02/14/2023]
Abstract
1. We examined 156 patients 33 years after CO poisoning occurred at the Miike Mikawa Mine, Fukuoka, Japan. The subjects were classified according to age as follows: between 55 and 59 years (n = 14), 60 and 69 years (n = 62), 70 and 79 years (n = 60), and 80 and 87 years (n = 18). The mean age was 69.2 years old. Concerning the duration of coma that occurred soon after the accident, 64 remained comatose from 0 to 6 hours, 46 from 6 to 12 hours and 46 from 12 to 48 hours. 2. Subjective symptoms were observed in 96.8% of the patients. Among them, forgetfulness was noted in 89.7%, followed by irritability in 66.7%, headache in 59.6%, insomnia in 55.8%, limb pain in 46.8%, dull head feeling in 42.9% and dizziness in 36.5%. 3. Intellectual disturbances were observed in 68.6% of the patients, including impression disturbance in 58.3%, memory disturbance in 51.9%, calculation disturbance in 63.5%, thinking disturbance in 61.5% and disorientation in 14.1%. 4. Apathy and disorder of volition and interest which were found in 72.4% were included in personality change because all symptoms persisted for many years. Personality change was classified as follows: weakness of emotion and will (hypobulia) in 54.4%, infantilism in 35.2%, hyperactive, talkactive and lack of inhibition in 18.5%, lack of self-possession and unstable temper in 9.6%, depression in 15.3%, neurosis in 7.6% and schizophrenic state in 2.5%. Among these symptoms of personality change, weakness of emotion and will and infantilism were conspicuous among the patients who remained in a coma for more than 6 hours soon after the accident but showed no relationship with age. 5. Neurological symptoms that were found in 48.7% of the patients were classified as sensory disturbance in 25.6%, peripheral nerve symptoms in 16.0%, pyramidal symptoms in 14.1%, ataxia and cranial nerve symptoms in 7.1%, paroxysmal symptoms in 6.4% and focal symptoms in 4.5%, extrapyramidal symptoms in 21.8% (Parkinsonism in 4.5%, tremor in 10.9% and muscle rigidity in 16.0%) and vegetative symptoms in 37.2%. 6. At the time of investigation, 5 CO poisoning patients were classified as serious cases (3.2%), 20 as comparatively serious (12.8%) medium-degree cases, 28 as comparatively mild (17.9%) medium-degree cases, 37 as comparatively serious (23.7%) mild cases, 42 as comparatively mild (26.9%) mild cases, 24 (15.4%) as having symptoms which were not problematic, and 24 (15.4%) as having symptoms that markedly worsened due to complication. 7. A total of 138 (88.4%) cases had complications were classified as follows: 78 cases (50.0%) of hypertension, 62 cases (39.7%) of cerebral infarction, 24 cases (15.4%) of cardiac disturbance, 21 cases (13.5%) of diabetes mellitus, 14 cases (9.0%) of hepatic disturbance and six cases of silicosis (3.8%). 8. Cranial MRI was carried out for 129 cases (82.7%). Of the abnormal findings identified, cerebral atrophy accounted for 72.0% (93 cases), including moderate and severe cases in 47.2% (61 cases), pallidum lesion for 37.9% (49 cases), lacunar infarction (including cerebral infarction) for 52.7% (68 cases), and hippocampal atrophy for 18.6% (24 cases). Many cases of cerebral atrophy and hippocampal atrophy were observed in patients who remained in the initial coma for more than 12 hours and were 80 years of age or old. The cases of pallidum lesion were observed in patients who remained in the initial coma for more than 6 hours, and no relationship with age was found. The other findings, cerebral atrophy and lacunar infarction showed a slight relationship with age. 9. Among the moderate and serious cases of intellectual disturbance, cerebral atrophy constituted to 62.5%, lacunar infarction 68.7% and pallidum lesion 50.0%. Among the moderate and serious cases of personality change, cerebral atrophy constituted 78.5%, lacunar infarction 35.0% and pallidum lesion 50.0%. Moreover, among extrapyramidal symptoms, pallidum lesion constituted 58.6%, cerebral atrophy 55.1% and lacun
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Saika Y, Kodama N, Kimura K, Fujii R, Ohtani H, Mune M, Mimura K, Maeda T, Yukawa S. [Plasma nicotinic acid levels in hemodialysis patients after the administration of niceritrol]. Nihon Jinzo Gakkai Shi 1999; 41:430-5. [PMID: 10441992] [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: 02/13/2023]
Abstract
Lp(a) has recently begun to attract attention as a risk factor of atherosclerotic disease, especially of ischemic heart disease. The Lp(a) concentration in the serum was shown to be important for chronic hemodialysis patients who have high mortality due to cardiovascular disease. Nicotinic acid derivatives, which are recognized for their capacity to lower the serum Lp(a) concentration, are effective against a high Lp(a) concentration in hemodialysis patients. In this study, niceritrol which is a nicotinic acid derivative was tested on hemodialysis patients and healthy controls by investigating the serum nicotinic acid level. Serum nicotinic acid concentration was also measured by the severity of renal dysfunction of patients untreated by niceritrol. The blood nicotinic acid concentration in healthy controls (n = 4) was changed after 2 hrs by the administration of niceritrol from 9.8 +/- 1.4 ng/ml to 192.7 +/- 23.1 ng/ml then slowly decreased. Chronic hemodialysis patients who take niceritrol every day showed the highest nicotinic acid serum concentration (500-1,000 ng/ml) on the day without hemodialysis and the serum level decreased with dialysis for 4 hrs to 25-80%. There was no significant difference in the nicotinic acid level in the serum between healthy controls (n = 10), chronic glomerulonephritis patients (n = 7), chronic renal failure patients (n = 8) and chronic hemodialysis patients (n = 17). Lp(a) concentration in the serum, however, was increased with greater severity of renal dysfunction, The side effect was not observed in any cases administered niceritrol. These data suggest nicotinate derivatives are effective for hemodialysis patients. High nicotinic acid level in the serum after treatment with niceritrol was lowered by dialysis. It is plausible that the nicotinate level in patients without niceritrol treatment did not influence the Lp(a) concentration, because there was no increase in the nicotinate level of the serum even if the patients had renal dysfunction.
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Affiliation(s)
- Y Saika
- Department of Internal Medicine, Ryoushukai Fujii Hospital, Osaka, Japan
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Mimura K, Tamura M, Haraguchi K, Masuda Y. [Analysis of 209 PCB congeners by high separation gas chromatography/low resolution mass spectrometer]. Fukuoka Igaku Zasshi 1999; 90:192-201. [PMID: 10396875] [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: 02/13/2023]
Abstract
All PCB congeners were analyzed by high separation gas chromatography/low resolution mass spectrometer, using 209 PCB congeners as standards. They were separated into 169 peaks, including 28 peaks containing 2 PCBs and 8 peaks containing 3 PCBs. The rice oil samples of Fukuoka and Taiwan Poisonings were analyzed for PCB congeners. They showed 115 separated peaks of PCB congeners. Total PCB concentrations were 879 and 769 ppm in 2 samples of Fukuoka rice oil and 57 and 83 ppm in 2 samples of Taiwan rice oil.
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Affiliation(s)
- K Mimura
- Daiichi College of Pharmaceutical Sciences, Fukuoka
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