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Ni S, Rahman S, Harada Y, Yoshioka S, Imaizumi M, Wong KH, Mashio AS, Ohta A, Hasegawa H. Remediation of cadmium-contaminated soil: GLDA-assisted extraction and sequential FeCl 3-CaO-based post-stabilization. Chemosphere 2024; 346:140554. [PMID: 38303381 DOI: 10.1016/j.chemosphere.2023.140554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 10/23/2023] [Accepted: 10/25/2023] [Indexed: 02/03/2024]
Abstract
Cadmium (Cd) contamination of farmland soils is a growing concern because of its highly toxic impact on ecosystems and human health. Chelator-assisted washing and chemical immobilization are effective remediation strategies for Cd-contaminated soils. Ethylenediaminetetraacetic acid (EDTA) has traditionally been used for soil washing, but its persistence in the environment and subsequent toxicity have raised significant ecological concerns. Consequently, biodegradable chelators have gained increasing attention as eco-friendly alternatives to the persistent chelator, EDTA. Therefore, this study evaluated the performance and efficacy of three biodegradable chelators: L-glutamate-N,N'-diacetic acid (GLDA), methylglycine-diacetic acid (MGDA), and 3-hydroxy-2,2'-iminodisuccinic acid (HIDS) in comparison to EDTA for remediating a real Cd-contaminated agricultural soil. The influence of treatment parameters, including chelator variants, washing time, chelator concentration, solution pH, and liquid-to-soil ratio (L/S) on Cd extraction was studied and optimized to attain the maximum removal rate. Following chelator-assisted washing, the efficacy of a stabilization preference combining FeCl3 and CaO in reducing the leaching potential of residual Cd in chelator-washed soil residues was also investigated. GLDA demonstrated comparable Cd extraction efficiency to EDTA, and the Cd extraction efficiency was found to be positively correlated with the soil washing parameters. However, under the optimized conditions (chelator concentration: 10 mmol L-1; washing time: 3 h; solution pH: 3; L/S ratio: 10:1), GLDA exhibited a higher Cd extraction rate than EDTA or the other chelators. Furthermore, a post-treatment process incorporating FeCl3 and CaO substantially diminished the water-leachable Cd content in the resultant soil residues. The proposed remediation strategy, which combines chemically assisted washing and stabilization, could be a practical option for extracting bulk Cd from soil and reducing the leaching potential of residual Cd.
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Affiliation(s)
- Shengbin Ni
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, 920-1192, Japan.
| | - Shafiqur Rahman
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, 920-1192, Japan.
| | - Yasuhiro Harada
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, 920-1192, Japan
| | - Shoji Yoshioka
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, 920-1192, Japan
| | - Minami Imaizumi
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, 920-1192, Japan
| | - Kuo H Wong
- Institute of Science and Engineering, Kanazawa University, Kakuma, Kanazawa, 920-1192, Japan
| | - Asami S Mashio
- Institute of Science and Engineering, Kanazawa University, Kakuma, Kanazawa, 920-1192, Japan
| | - Akio Ohta
- Institute of Science and Engineering, Kanazawa University, Kakuma, Kanazawa, 920-1192, Japan
| | - Hiroshi Hasegawa
- Institute of Science and Engineering, Kanazawa University, Kakuma, Kanazawa, 920-1192, Japan.
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Applegate KE, Rühm W, Wojcik A, Bourguignon M, Brenner A, Hamasaki K, Imai T, Imaizumi M, Imaoka T, Kakinuma S, Kamada T, Nishimura N, Okonogi N, Ozasa K, Rübe CE, Sadakane A, Sakata R, Shimada Y, Yoshida K, Bouffler S. Individual response of humans to ionising radiation: governing factors and importance for radiological protection. Radiat Environ Biophys 2020; 59:185-209. [PMID: 32146555 DOI: 10.1007/s00411-020-00837-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 02/26/2020] [Indexed: 05/23/2023]
Abstract
Tissue reactions and stochastic effects after exposure to ionising radiation are variable between individuals but the factors and mechanisms governing individual responses are not well understood. Individual responses can be measured at different levels of biological organization and using different endpoints following varying doses of radiation, including: cancers, non-cancer diseases and mortality in the whole organism; normal tissue reactions after exposures; and, cellular endpoints such as chromosomal damage and molecular alterations. There is no doubt that many factors influence the responses of people to radiation to different degrees. In addition to the obvious general factors of radiation quality, dose, dose rate and the tissue (sub)volume irradiated, recognized and potential determining factors include age, sex, life style (e.g., smoking, diet, possibly body mass index), environmental factors, genetics and epigenetics, stochastic distribution of cellular events, and systemic comorbidities such as diabetes or viral infections. Genetic factors are commonly thought to be a substantial contributor to individual response to radiation. Apart from a small number of rare monogenic diseases such as ataxia telangiectasia, the inheritance of an abnormally responsive phenotype among a population of healthy individuals does not follow a classical Mendelian inheritance pattern. Rather it is considered to be a multi-factorial, complex trait.
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Affiliation(s)
| | - W Rühm
- Helmholtz Center Munich, German Research Center for Environmental Health, Institute of Radiation Medicine, Neuherberg, Germany
| | - A Wojcik
- Centre for Radiation Protection Research, MBW Department, Stockholm University, Stockholm, Sweden
| | - M Bourguignon
- Department of Biophysics and Nuclear Medicine, University of Paris Saclay (UVSQ), Verseilles, France
| | - A Brenner
- Department of Epidemiology, Radiation Effects Research Foundation, Hiroshima, Japan
| | - K Hamasaki
- Department of Molecular Biosciences, Radiation Effects Research Foundation, Hiroshima, Japan
| | - T Imai
- National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Sciences and Technology, Chiba, Japan
| | - M Imaizumi
- Department of Nagasaki Clinical Studies, Radiation Effects Research Foundation, Nagasaki, Japan
| | - T Imaoka
- Department of Radiation Effects Research, National Institute of Radiological Sciences, National Institute for Quantum and Radiological Science and Technology, Chiba, Japan
| | - S Kakinuma
- Department of Radiation Effects Research, National Institute of Radiological Sciences, National Institute for Quantum and Radiological Science and Technology, Chiba, Japan
| | - T Kamada
- QST Hospital, National Institute of Radiological Sciences, National Institute for Quantum and Radiological Science and Technology, Chiba, Japan
| | - N Nishimura
- Department of Radiation Effects Research, National Institute of Radiological Sciences, National Institute for Quantum and Radiological Science and Technology, Chiba, Japan
| | - N Okonogi
- QST Hospital, National Institute of Radiological Sciences, National Institute for Quantum and Radiological Science and Technology, Chiba, Japan
| | - K Ozasa
- Department of Epidemiology, Radiation Effects Research Foundation, Hiroshima, Japan
| | - C E Rübe
- Department of Radiation Oncology, Saarland University Medical Center, Homburg/Saar, Germany
| | - A Sadakane
- Department of Epidemiology, Radiation Effects Research Foundation, Hiroshima, Japan
| | - R Sakata
- Department of Epidemiology, Radiation Effects Research Foundation, Hiroshima, Japan
| | - Y Shimada
- National Institute for Quantum and Radiological Science and Technology, Chiba, Japan
- Institute for Environmental Sciences, Aomori, Japan
| | - K Yoshida
- Immunology Laboratory, Department of Molecular Biosciences, Radiation Effects Research Foundation, Hiroshima, Japan
| | - S Bouffler
- Radiation Effects Department, Centre for Radiation, Chemical and Environmental Hazards, Public Health England, Chilto, Didcot, UK
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Osanai-Sasakawa A, Hosomi K, Sumitomo Y, Takizawa T, Tomura-Suruki S, Imaizumi M, Kasai N, Poh TW, Yamano K, Yong WP, Kono K, Nakamura S, Ishii T, Nakai R. An anti-ASCT2 monoclonal antibody suppresses gastric cancer growth by inducing oxidative stress and antibody dependent cellular toxicity in preclinical models. Am J Cancer Res 2018; 8:1499-1513. [PMID: 30210919 PMCID: PMC6129496] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Accepted: 07/23/2018] [Indexed: 06/08/2023] Open
Abstract
Glutamine is a major nutrient for cancer cells during rapid proliferation. Alanine-serine-cysteine (ASC) transporter 2 (ASCT2; SLC1A5) mediates glutamine uptake in a variety of cancer cells. We previously reported that KM8094, a novel anti-ASCT2 humanized monoclonal antibody, possesses anti-tumor efficacy in gastric cancer patient-derived xenografts. The aim of this study was to investigate the molecular mechanism underlying the effect of KM8094 and to further substantiate the preclinical feasibility of using KM8094 as a potential therapeutic agent against gastric cancer. First, ASCT2 was found to be highly expressed in cancer tissues derived from gastric cancer patients by an immunohistochemical analysis. Next, we performed in vitro studies using multiple gastric cancer cell lines and observed that several gastric cancer cells expressing ASCT2 showed glutamine-dependent cell growth, which was repressed by KM8094. We found that KM8094 inhibited the glutamine uptake, leading to the reduction of glutathione (GSH) level and the elevation of oxidative stress. KM8094 suppressed the cell cycle progression and increased the apoptosis. Furthermore, KM8094 exerted antibody dependent cellular cytotoxicity (ADCC) against human gastric cancer cells in vitro. Finally, in vivo studies revealed that KM8094 suppressed tumor growth in several gastric cancer xenografts. This effect was enhanced by docetaxel, one of the agents commonly used in gastric cancer therapy. Thus, our findings suggest that KM8094 is a potential new therapeutic agent for gastric cancer expressing ASCT2, which blocks the cellular glutamine metabolism and possesses ADCC activity.
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Affiliation(s)
- Aya Osanai-Sasakawa
- R&D Division, Kyowa Hakko Kirin Co. Ltd.Tokyo, Japan
- Department of Life Science and Technology, Tokyo Institute of TechnologyTokyo, Japan
| | - Kenta Hosomi
- R&D Division, Kyowa Hakko Kirin Co. Ltd.Tokyo, Japan
| | | | | | | | | | | | - Tze Wei Poh
- R&D Division, Kyowa Hakko Kirin Co. Ltd.Tokyo, Japan
| | - Kazuya Yamano
- R&D Division, Kyowa Hakko Kirin Co. Ltd.Tokyo, Japan
| | - Wei Peng Yong
- Department of Haematology-Oncology, National University Cancer InstituteSingapore
| | - Koji Kono
- Department of Surgery, National University of SingaporeSingapore
| | - Satoshi Nakamura
- Department of Life Science and Technology, Tokyo Institute of TechnologyTokyo, Japan
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Matsumoto M, Nukada T, Uyama O, Yoneda S, Imaizumi M, Miyamoto T, Kayama N. Thromboxane Generation in Patients with Essential Hypertension or Cerebrovascular Disease and Effect of Oral Aspirin. Thromb Haemost 2018. [DOI: 10.1055/s-0038-1650072] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
SummaryThe ability of platelets to synthesize thromboxane B2 (TxB2) from arachidonic acid (AA) or prostaglandin H2 (PGH2) was studied in 26 control subjects, 40 patients with essential hypertension, 20 patients with cerebrovascular disease (CVD) not taking aspirin and 11 patients with CVD taking aspirin. The activity of platelets to form TxB2 from AA or PGH2 was measured using 1 — 14C arachidonic acid or 1—14C PGH2 as a substrate. There was no significant difference in TxB2 generation from AA or PGH2 among the platelets collected from the control subjects, hypertensive patients and CVD patients not taking aspirin.In CVD patients taking aspirin, marked suppression was observed in TxB2 synthesis from AA, but no suppression in TxB2 synthesis from PGH2. At least 750 mg aspirin per day were required for nearly complete suppression of TxB2 generation from AA.
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Affiliation(s)
- M Matsumoto
- The First Department of Internal Medicine, Osaka University Medical School, Osaka, Japan
| | - T Nukada
- The First Department of Internal Medicine, Osaka University Medical School, Osaka, Japan
| | - O Uyama
- The First Department of Internal Medicine, Osaka University Medical School, Osaka, Japan
| | - S Yoneda
- The First Department of Internal Medicine, Osaka University Medical School, Osaka, Japan
| | - M Imaizumi
- The First Department of Internal Medicine, Osaka University Medical School, Osaka, Japan
| | - T Miyamoto
- The Central Research Institute, Ono Pharmaceutical Co., Ltd., Osaka, Japan
| | - N Kayama
- The Central Research Institute, Ono Pharmaceutical Co., Ltd., Osaka, Japan
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Matsuda Y, Suzuki A, Esaka S, Hamashima Y, Imaizumi M, Kinoshita M, Shirahata H, Kiso Y, Kojima H, Matsukawa M, Fujii Y, Ishikawa N, Aida J, Takubo K, Ishiwata T, Nishimura M, Arai T. Telomere length determined by the fluorescence in situ hybridisation distinguishes malignant and benign cells in cytological specimens. Cytopathology 2018; 29:262-266. [PMID: 29578263 DOI: 10.1111/cyt.12535] [Citation(s) in RCA: 2] [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] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/22/2018] [Indexed: 11/29/2022]
Abstract
BACKGROUND Telomeres are tandem repeats of TTAGGG at the end of eukaryotic chromosomes that play a key role in preventing chromosomal instability. The aim of the present study is to determine telomere length using fluorescence in situ hybridisation (FISH) on cytological specimens. METHODS Aspiration samples (n = 41) were smeared on glass slides and used for FISH. RESULTS Telomere signal intensity was significantly lower in positive cases (cases with malignancy, n = 25) as compared to negative cases (cases without malignancy, n = 16), and the same was observed for centromere intensity. The difference in DAPI intensity was not statistically significant. The ratio of telomere to centromere intensity did not show a significant difference between positive and negative cases. There was no statistical difference in the signal intensities of aspiration samples from ascites or pleural effusion (n = 23) and endoscopic ultrasound-guided FNA samples from the pancreas (n = 18). CONCLUSIONS The present study revealed that telomere length can be used as an indicator to distinguish malignant and benign cells in cytological specimens. This novel approach may help improve diagnosis for cancer patients.
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Affiliation(s)
- Y Matsuda
- Department of Pathology, Tokyo Metropolitan Geriatric Hospital, Itabashi-ku, Japan
| | - A Suzuki
- Department of Pathology, Tokyo Metropolitan Geriatric Hospital, Itabashi-ku, Japan
| | - S Esaka
- Department of Pathology, Tokyo Metropolitan Geriatric Hospital, Itabashi-ku, Japan
| | - Y Hamashima
- Department of Pathology, Tokyo Metropolitan Geriatric Hospital, Itabashi-ku, Japan
| | - M Imaizumi
- Department of Pathology, Tokyo Metropolitan Geriatric Hospital, Itabashi-ku, Japan
| | - M Kinoshita
- Department of Pathology, Tokyo Metropolitan Geriatric Hospital, Itabashi-ku, Japan
| | - H Shirahata
- Department of Pathology, Tokyo Metropolitan Geriatric Hospital, Itabashi-ku, Japan
| | - Y Kiso
- Department of Pathology, Tokyo Metropolitan Geriatric Hospital, Itabashi-ku, Japan
| | - H Kojima
- Department of Pathology, Tokyo Metropolitan Geriatric Hospital, Itabashi-ku, Japan
| | - M Matsukawa
- Department of Endoscopy, Tokyo Metropolitan Geriatric Hospital, Itabashi-ku, Japan
| | - Y Fujii
- Department of Endoscopy, Tokyo Metropolitan Geriatric Hospital, Itabashi-ku, Japan
| | - N Ishikawa
- Research Team for Geriatric Pathology, Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology, Itabashi-ku, Japan
| | - J Aida
- Research Team for Geriatric Pathology, Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology, Itabashi-ku, Japan
| | - K Takubo
- Research Team for Geriatric Pathology, Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology, Itabashi-ku, Japan
| | - T Ishiwata
- Research Team for Geriatric Pathology, Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology, Itabashi-ku, Japan
| | - M Nishimura
- Department of Endoscopy, Tokyo Metropolitan Geriatric Hospital, Itabashi-ku, Japan
| | - T Arai
- Department of Pathology, Tokyo Metropolitan Geriatric Hospital, Itabashi-ku, Japan
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Sasakawa A, Hosomi K, Ishii T, Ando H, Suzuki M, Imaizumi M, Zou J, Kasai N, Yamano K, Nakamura K, Nakai R. Abstract B037: The establishment and evaluation of anti-ASC amino acid transporter 2 (ASCT2) antibody as a novel therapeutic antibody for gastric cancer. Mol Cancer Ther 2018. [DOI: 10.1158/1535-7163.targ-17-b037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Introduction: Glutamine is the most abundant amino acid in blood, serving as a major biosynthetic substrate in nucleic acids and proteins. Recent studies have shown that glutamine contributes to cancer cell proliferation, invasion, and metastasis, so targeting the glutamine pathway is expected to be a feasible approach to cancer treatment. In cancer cells, the Na+-dependent neutral amino acid exchanger alanine-serine-cysteine (ASC) transporter 2 (ASCT2) plays a key role in the glutamine uptake. ASCT2 has been shown to be overexpressed in a variety of cancerous tissues, including gastric cancer. In this study, we established a defucosylated humanized anti-human ASCT2 monoclonal antibody, KM8094, that specifically binds to the natural configuration of an extracellular domain of ASCT2. We further evaluated the efficacy of KM8094 as a therapeutic agent for gastric cancer treatment using gastric cancer cell lines. Materials and Methods: Immunohistochemistry was conducted on tumor tissue specimens. The ASCT2 expression on tumor cell-surface was analyzed by flow cytometry using KM8094 and PE-conjugated anti-human IgG monoclonal antibody. The glutamine uptake in human gastric cancer cells (SNU-16) was examined using 14C-labeled glutamine. Cell growth was measured by a CellTiter-Glo Luminescent Cell Viability Assay after 72-h treatment with KM8094 or control IgG. The in vivo anti-tumor activity of KM8094 combined with docetaxel was examined using gastric cancer xenograft models. Results: In the immunohistochemical analysis, we observed the high expression of ASCT2 in human tumor tissues, including gastric cancer. To evaluate the inhibitory activity on the ASCT2 transporter function and tumor cell growth of KM8094, we performed a glutamine uptake assay using 14C-glutamine. As a result, KM8094 inhibited the 14C-glutamine uptake in SNU-16 gastric cancer cells expressing ASCT2. KM8094 also suppressed cell growth of multiple gastric cancer cell lines both in vitro and in vivo. These results suggested that KM8094 has therapeutic potential for gastric cancer by inhibiting ASCT2 transporter activity. Furthermore, in an SNU-16 gastric cancer xenograft model, combination therapy of KM8094 and docetaxel, a therapeutic drug for gastric cancer, showed a more potent antitumor effect than either agent alone. Conclusions: KM8094 may be a potential new therapeutic agent for gastric cancer expressing ASCT2, as it exhibited antitumor growth activities both in vitro and in vivo.
Citation Format: Aya Sasakawa, Kenta Hosomi, Toshihiko Ishii, Hiroshi Ando, Masayo Suzuki, Minami Imaizumi, Jian Zou, Noriyuki Kasai, Kazuya Yamano, Kazuyasu Nakamura, Ryuichiro Nakai. The establishment and evaluation of anti-ASC amino acid transporter 2 (ASCT2) antibody as a novel therapeutic antibody for gastric cancer [abstract]. In: Proceedings of the AACR-NCI-EORTC International Conference: Molecular Targets and Cancer Therapeutics; 2017 Oct 26-30; Philadelphia, PA. Philadelphia (PA): AACR; Mol Cancer Ther 2018;17(1 Suppl):Abstract nr B037.
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Affiliation(s)
| | | | | | | | | | | | - Jian Zou
- 1Kyowa Hakko Kirin Co., Ltd., Shizuoka, Japan
| | - Noriyuki Kasai
- 2Kyowa Kirin Pharmaceutical Development, Inc., Princeton, NJ
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Haraguchi A, Fujishima K, Ando T, Mori F, Imaizumi M, Abiru N, Yamasaki H, Matsumoto K, Takamura N, Kawakami A. Multiple drug combination of anti-diabetic agents as a predictor for poor clinical response to liraglutide. MINERVA ENDOCRINOL 2014; 39:289-297. [PMID: 25371055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
AIM Aim of the study was to retrospectively analyze the clinical parameters that contribute to the therapeutic outcome of GLP-1 analogues. METHODS We enrolled 106 patients with type 2 diabetes mellitus (T2DM), treated with liraglutide (N.=69) or exenatide (N.=37) for longer than three months. The patients were divided into two groups: good responders and poor responders to GLP-1 analogues, based on pretreatment and post-treatment HbA1c levels. Good responders were those whose HbA1c level had decreased by 1% or more, or maintained at less than 7%. All other patients were categorized as poor responders. We used univariate and multivariate analyses to assess pretreatment parameters between the two groups. RESULTS Approximately 35% of the patients were poor responders. Our analysis of the pretreatment clinical parameters revealed that number of anti-diabetic agents and use of sulfonylurea were significantly associated with poor response to liraglutide (P=0.02 and P=0.03, respectively) in a multivariate analysis. We were not able to find any candidate related to clinical response to exenatide. CONCLUSION Our study showed that the therapeutic effects of GLP-1 analogues on T2DM patients were heterogeneous. T2DM patients who require multiple anti-diabetic agents, especially sulfonylurea, do not benefit from liraglutide treatment.
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Affiliation(s)
- A Haraguchi
- Division of Endocrinology and Metabolism Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan -
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Suzuki Y, Yamaguchi I, Myojo K, Kimoto N, Imaizumi M, Takada C, Sanada H, Takaba K, Yamate J. Histopathological characterization of renal tubular and interstitial changes in 5/6 nephrectomized marmoset monkeys (Callithrix jacchus). ACTA ACUST UNITED AC 2014; 67:41-51. [PMID: 25446802 DOI: 10.1016/j.etp.2014.09.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2014] [Revised: 09/20/2014] [Accepted: 09/26/2014] [Indexed: 01/09/2023]
Abstract
Common marmosets (Callithrix jacchus) have become a useful animal model, particularly for development of biopharmaceuticals. While various renal failure models have been established in rodents, there is currently no acceptable model in marmosets. We analyzed the damaged renal tubules and tubulointerstitial changes (inflammation and fibrosis) of 5/6 nephrectomized (Nx) common marmosets by histopathological/immunohistochemical methods, and compared these findings to those in 5/6 Nx SD rats. In Nx marmosets and rats sacrificed at 5 and 13 weeks after Nx, variously dilated and atrophied renal tubules were seen in the cortex in common; however, the epithelial proliferating activity was much less in Nx marmosets. Furthermore, the degrees of inflammation and fibrosis seen in the affected cortex were more severe and massive in Nx marmosets with time-dependent increase. Interestingly, inflammation in Nx marmosets, of which degree was less in Nx rats, consisted of a large number of CD3-positive T cells and CD20-positive B cells (occasionally forming follicles), and a few CD68-positive macrophages. Based on these findings, lymphocytes might contribute to the progressive renal lesions in Nx marmosets. Fibrotic areas in Nx marmosets comprised myofibroblasts expressing vimentin and α-smooth muscle actin (α-SMA), whereas along with vimentin and α-SMA expressions, desmin was expressed in myofibroblasts in Nx rats. This study shows that there are some differences in renal lesions induced by Nx between marmosets and rats, which would provide useful, base-line information for pharmacology and toxicology studies using Nx marmosets.
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Affiliation(s)
- Yui Suzuki
- Translational Research Unit, Research and Development Division, Kyowa Hakko Kirin, Co., Ltd., Japan; Veterinary Pathology, Osaka Prefecture University, Japan.
| | - Itaru Yamaguchi
- Translational Research Unit, Research and Development Division, Kyowa Hakko Kirin, Co., Ltd., Japan
| | - Kensuke Myojo
- Translational Research Unit, Research and Development Division, Kyowa Hakko Kirin, Co., Ltd., Japan
| | - Naoya Kimoto
- Research Functions Unit, Research and Development Division, Kyowa Hakko Kirin, Co., Ltd., Japan
| | - Minami Imaizumi
- Translational Research Unit, Research and Development Division, Kyowa Hakko Kirin, Co., Ltd., Japan
| | - Chie Takada
- Translational Research Unit, Research and Development Division, Kyowa Hakko Kirin, Co., Ltd., Japan
| | - Hiroko Sanada
- Research Functions Unit, Research and Development Division, Kyowa Hakko Kirin, Co., Ltd., Japan
| | - Katsumi Takaba
- Translational Research Unit, Research and Development Division, Kyowa Hakko Kirin, Co., Ltd., Japan
| | - Jyoji Yamate
- Veterinary Pathology, Osaka Prefecture University, Japan
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Yamaguchi I, Myojo K, Sanada H, Takami A, Suzuki Y, Imaizumi M, Takada C, Kimoto N, Saeki K, Yamate J, Takaba K. Five-sixth Nephrectomy in Female Common Marmosets(Callithrix jacchus) as a Chronic Renal Failure Model: -A Longitudinal Course of Serum Biochemical, Hematological and Histopathological Changes-. J Toxicol Pathol 2014; 27:183-95. [PMID: 25378803 PMCID: PMC4217228 DOI: 10.1293/tox.2013-0055] [Citation(s) in RCA: 3] [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: 09/30/2013] [Accepted: 06/04/2014] [Indexed: 12/29/2022] Open
Abstract
To assess the relevance and availability of subtotal nephrectomized common marmoset monkeys as a chronic renal failure (CRF) model, we observed for 26 weeks the pathophysiological condition of female marmosets subjected to five-sixth surgical nephrectomy (5/6Nx) by a two-step surgical method. The 5/6Nx marmosets showed a significant increase in serum levels of urea nitrogen, creatinine and cystatin-C immediately after 5/6Nx surgery. These renal disorder parameters subsequently tended to decrease with the passage of time but remained higher than the control levels by the end of the study. Hyperplastic parathyroid glands, a high turnover state of osteodystrophy in the femoral bone with higher serum ALP activity and anemia with hypocellularity of bone marrow were evident. The 5/6Nx marmosets showed a stable CRF condition for a long time and some characteristic disorders similar to those observed in CRF patients. These diagnostic aspects might be a species-specific anatomical and physiological signature, reflecting the nutritional condition. The CRF model using 5/6Nx marmosets might become a useful method of evaluating the unique mechanism of CRF development.
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Affiliation(s)
- Itaru Yamaguchi
- Fuji Research Park, Kyowa Hakko Kirin Co., Ltd., 1188 Shimotogari, Nagaizumi-cho, Sunto-gun, Shizuoka 411–8731, Japan
| | - Kensuke Myojo
- Fuji Research Park, Kyowa Hakko Kirin Co., Ltd., 1188 Shimotogari, Nagaizumi-cho, Sunto-gun, Shizuoka 411–8731, Japan
| | - Hiroko Sanada
- Fuji Research Park, Kyowa Hakko Kirin Co., Ltd., 1188 Shimotogari, Nagaizumi-cho, Sunto-gun, Shizuoka 411–8731, Japan
| | - Atsuko Takami
- Fuji Research Park, Kyowa Hakko Kirin Co., Ltd., 1188 Shimotogari, Nagaizumi-cho, Sunto-gun, Shizuoka 411–8731, Japan
| | - Yui Suzuki
- Fuji Research Park, Kyowa Hakko Kirin Co., Ltd., 1188 Shimotogari, Nagaizumi-cho, Sunto-gun, Shizuoka 411–8731, Japan
- Veterinary Pathology, Osaka Prefecture University, 1–58 Rinkuu Ourai Kita, Izumisano, Osaka 598–8531, Japan
| | - Minami Imaizumi
- Fuji Research Park, Kyowa Hakko Kirin Co., Ltd., 1188 Shimotogari, Nagaizumi-cho, Sunto-gun, Shizuoka 411–8731, Japan
| | - Chie Takada
- Fuji Research Park, Kyowa Hakko Kirin Co., Ltd., 1188 Shimotogari, Nagaizumi-cho, Sunto-gun, Shizuoka 411–8731, Japan
| | - Naoya Kimoto
- Fuji Research Park, Kyowa Hakko Kirin Co., Ltd., 1188 Shimotogari, Nagaizumi-cho, Sunto-gun, Shizuoka 411–8731, Japan
| | - Koji Saeki
- Fuji Research Park, Kyowa Hakko Kirin Co., Ltd., 1188 Shimotogari, Nagaizumi-cho, Sunto-gun, Shizuoka 411–8731, Japan
| | - Jyoji Yamate
- Veterinary Pathology, Osaka Prefecture University, 1–58 Rinkuu Ourai Kita, Izumisano, Osaka 598–8531, Japan
| | - Katsumi Takaba
- Fuji Research Park, Kyowa Hakko Kirin Co., Ltd., 1188 Shimotogari, Nagaizumi-cho, Sunto-gun, Shizuoka 411–8731, Japan
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10
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Yamaguchi I, Myojo K, Sanada H, Sudo E, Ootsuka S, Okumura H, Takami A, Yoneshige T, Suzuki Y, Imaizumi M, Takada C, Kimoto N, Saeki K, Takaba K. Spontaneous Malignant T Cell Lymphoma in a Young Male Common Marmoset (Callithrix jacchus). J Toxicol Pathol 2013; 26:301-7. [PMID: 24155563 PMCID: PMC3787608 DOI: 10.1293/tox.26.301] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2012] [Accepted: 03/21/2013] [Indexed: 11/26/2022] Open
Abstract
We histopathologically and immunohistochemically investigated a case of malignant
lymphoma that spontaneously developed in a male common marmoset at two years of age.
Beginning at two years four months of age, the animal had an enlargement of the
submandibular and inguinal lymph nodes, small subcutaneous nodules near the right breast
and an approximately fivefold increase in peripheral lymphocyte count compared with the
previous examination value. The postmortem findings at two years eight months of age
showed lymphadenopathy with enlargement of the thymus and spleen. Small- to
intermediate-sized neoplastic lymphocytes had diffusely proliferated in the enlarged
nodes. The neoplastic cells were pleomorphic and had irregularly shaped nuclei. The
nuclear chromatin staining revealed hyperchromatism in the small-sized cells, and the
intermediate-sized cells exhibited vesicular staining. An immunohistochemical examination
indicated that the neoplastic lymphocytes were positive for CD3 and negative for CD20,
thus suggesting that they had originated from T cells. In addition, the proliferation of
high endothelial venules and reactive epithelioid histiocytes was observed. Scattered
tingible body-laden macrophages were infrequently detected. Neoplastic lymphocytes were
also observed in the thymus, spleen, heart, lungs, liver, kidneys, adrenal glands and
femoral and sternal bone marrow. This malignant lymphoma in a young male common marmoset
was considered to fit the category of “peripheral T-cell lymphoma, not otherwise specified
(PTCL-NOS)” according to the new WHO system of classification.
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Affiliation(s)
- Itaru Yamaguchi
- Toxicological Research Laboratories, Kyowa Hakko Kirin Co., Ltd., 1188 Shimotogari, Nagaizumi-cho, Sunto-gun, Shizuoka 411-8731, Japan
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11
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Suzuki Y, Yamaguchi I, Onoda N, Saito T, Myojo K, Imaizumi M, Takada C, Kimoto N, Takaba K, Yamate J. Differential renal glomerular changes induced by 5/6 nephrectomization between common marmoset monkeys (Callithrix jacchus) and rats. ACTA ACUST UNITED AC 2013; 65:667-76. [DOI: 10.1016/j.etp.2012.08.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2012] [Revised: 05/10/2012] [Accepted: 08/19/2012] [Indexed: 12/14/2022]
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12
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Takaba K, Imada T, Katsumata S, Okumura H, Iwamoto S, Suzuki Y, Imaizumi M, Myojo K, Takada C, Kimoto N, Saeki K, Yamaguchi I. Spontaneous Adenosquamous Carcinoma with Rapid Growth and EMT-like Changes in the Mammary Gland of a Young Adult Female BALB/c Mouse. J Toxicol Pathol 2013; 25:265-71. [PMID: 23345929 PMCID: PMC3517922 DOI: 10.1293/tox.25.265] [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: 12/27/2011] [Accepted: 01/30/2012] [Indexed: 11/19/2022] Open
Abstract
This study histopathologically and immunohistochemically investigated a spontaneously occurring single mass subcutaneously located in the left lower abdomen of a female BALB/cAJcl-nu/+ mouse at 10 weeks of age. The mass was about 20 × 15 × 10 mm in size after formalin fixation; nevertheless, it was not detected by clinical observations at 9 weeks of age. H&E staining revealed the tumor origin was epithelial and probably arose from the mammary gland, and the tumor cells demonstrated a squamous, acinar or polyhedral/basal pattern. A cell kinetics analysis revealed that many of the tumor cells of the squamous, acinar or polyhedral/basal component were positive for PCNA and cyclin D1, although there were a few of TUNEL-positive tumor cells in all of the components. An epithelial/mesenchymal analysis demonstrated that most of the tumor cells of the squamous and acinar components contained keratin and E-cadherin; however, most of the tumor cells of the polyhedral/basal component were less or very weakly positive for these markers. The tumor cells of the squamous component were negative for vimentin and SMA; however, many of the tumor cells of the polyhedral/basal component exhibited vimentin. In addition, expression of SMA was confirmed in some tumor cells of the acinar and basal components. Based on the microscopic and immunohistochemical characterizations, the tumor was diagnosed to be adenosquamous carcinoma that originated from the mammary gland with rapid growth, and the tumor cells demonstrated epithelial-mesenchymal transition-like changes.
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Affiliation(s)
- Katsumi Takaba
- Toxicological Research Laboratories, Kyowa Hakko Kirin Co., Ltd., 1188 Shimotogari, Nagaizumi-cho, Sunto-gun, Shizuoka 411-8731, Japan
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13
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Kato H, Matsuda K, Baba K, Shimosegawa E, Isohashi K, Imaizumi M, Hatazawa J. MR imaging-based correction for partial volume effect improves detectability of intractable epileptogenic foci on iodine 123 iomazenil brain SPECT images: an extended study with a larger sample size. AJNR Am J Neuroradiol 2012; 33:2088-94. [PMID: 22627794 DOI: 10.3174/ajnr.a3121] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE It has been suggested, on the basis of a previous pilot study conducted in a small number of patients, that MR imaging-based PVE correction in I-123 iomazenil brain SPECT improves the detectability of cortical epileptogenic foci. In the present study, we performed an investigation by using a larger sample size to establish the effectiveness of the PVE correction and to conduct a detailed evaluation based on the histologic classification of lesions. MATERIALS AND METHODS Seventy-five patients (male/female, 37/38; age, 28 ± 12 years) with intractable epilepsy who had undergone surgical treatment were enrolled in this study. I-123 iomazenil SPECT and MR imaging examinations were performed before the operation in all patients. I-123 iomazenil SPECT images with and without MR imaging-based PVE correction were assessed visually and by semiquantitative analysis based on the AI(%) of the SPECT count in the resected lesions. RESULTS The sensitivity, specificity, and accuracy of foci detection by visual assessment were significantly higher after PVE correction compared with the values obtained before the correction. The results of the semiquantitative analysis revealed that the asymmetry of the SPECT counts was significantly increased after the PVE correction in the surgically resected lesions in cases of mesial temporal sclerosis, tumor, and malformations of cortical development. CONCLUSIONS The effectiveness of MR imaging-based PVE correction in I-123 iomazenil brain SPECT in improving the detection of cortical epileptogenic foci with abnormal histologic findings was established by our investigation conducted on a large sample size.
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Affiliation(s)
- H Kato
- Department of Nuclear Medicine and Tracer Kinetics, Osaka University Graduate School of Medicine, Osaka, Japan.
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14
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Umeda Y, Imaizumi M, Okada W, Yokoya H, Tanaka T. A Case of Sciatic Arterio-venous Malformation. Eur J Vasc Endovasc Surg 2011. [DOI: 10.1016/j.ejvs.2011.09.018] [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: 10/15/2022]
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15
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Hida A, Akahoshi M, Takagi Y, Imaizumi M, Sera N, Soda M, Maeda R, Nakashima E, Ida H, Kawakami A, Nakamura T, Eguchi K. Lipid infiltration in the parotid glands: a clinical manifestation of metabolic syndrome. Exp Clin Endocrinol Diabetes 2011; 120:110-5. [PMID: 22068614 DOI: 10.1055/s-0031-1291315] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Abstract
BACKGROUND The clinical features of lipid infiltration in the parotid glands (LIPG) have not been studied. Monitoring of atomic-bomb survivors for late effects of radiation exposure has provided the opportunity to review the clinical findings of LIPG. METHODS A total of 992 atomic-bomb survivors in Nagasaki, Japan underwent lachrymal and salivary secretion tests and anthropometric, biochemical, and abdominal ultrasonographic examinations between 2002 and 2004. Among 465 subjects who had reduced tear and/or salivary excretion, 176 subjects took a salivary magnetic resonance imaging (MRI) examination. RESULTS LIPG was detected in 53 of the 176 subjects who had salivary MRI. LIPG cases showed a preponderance of females and fatty liver compared with the subjects without LIPG. Age-and-sex-adjusted regression analysis revealed that body mass index (BMI), low-density lipoprotein cholesterol, triglycerides, hemoglobin A1c, and C-reactive protein were higher, whereas high-density lipoprotein cholesterol and adiponectin were lower, in the subjects with LIPG. Multivariate logistic regression analysis showed that BMI and fatty liver were mutually associated with LIPG independently from radiation dose. CONCLUSIONS LIPG associated with BMI, fatty liver, and coronary risk factors was a clinical manifestation of metabolic syndrome.
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Affiliation(s)
- A Hida
- Department of Clinical Studies, Radiation Eff ects Research Foundation, Nakagawa, Nagasaki, Japan.
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16
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Suzuki Y, Takaba K, Yamaguchi I, Myoujou K, Kimoto N, Ikegami H, Saeki K, Imaizumi M, Takada C. Histopathological, immunohistochemical and ultrastructural studies of a renal mesenchymal tumor in a young beagle dog. J Vet Med Sci 2011; 74:89-92. [PMID: 21836376 DOI: 10.1292/jvms.10-0504] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A 15-month-old male beagle dog used in a toxicity study had a primary renal mesenchymal tumor. Macroscopically, the tumor was a gray-white mass which was found in the right kidney, and extended from the capsule to a position slightly compressing the medulla. Microscopically, most of the tumor cells showed a myxoid pattern, in which the matrix was positive for alcian blue staining. In the other parts of the tumor, a fascicular and wavy pattern was observed, and the matrix was full of collagen fibrils. Immunohistochemically, tumor cells were positive for vimentin and fibronectin, and negative for cytokeratin, desmin, α-smooth muscle actin, Von Willebrand factor, cyclooxigenase-2 and myelin basic protein. As a result, we diagnosed this case to be a renal mesenchymal tumor. Based on the microscopic findings, interstitial characteristics and immunohistochemical features, the present case was classified as a congenital mesoblastic tumor.
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Affiliation(s)
- Yui Suzuki
- Toxicological Research Laboratories, Kyowa Hakko Kirin, Co., Ltd., Shizuoka, Japan.
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17
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Umeda Y, Imaizumi M, Tanaka T. [Outcome of treatment for chest trauma at a single institution]. Kyobu Geka 2011; 64:545-547. [PMID: 21766703] [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: 05/31/2023]
Abstract
Between March 2005 and September 2009, 41,827 patients visited our emergency outpatient clinic, and 50 patients (0.12%) were admitted to our institution for chest trauma. Seventy percent of the chest traumas were caused by traffic accidents. Eighty-five percent of the traffic accidents were associated with car driving or motorcycle driving. Rib fracture, pneumothorax, hemothorax, and lung injury were seen in 56%, 40%, 22%, and 28% of the patients, respectively. Chest tube drainage was performed in 36% of the patients. Sixty-two percent of the patients with chest trauma underwent conservative follow-up. Only 1 patient underwent the ligation of the intercostal artery. One patient with chest trauma and fracture of the cervical vertebra and the pelvis died, who was in the state of cardio-pulmonary arrest on arrival. Forty-nine patients were discharged in 15.2 +/- 17.0 days. Twenty-two percent of the patients were hospitalized only 1 night.
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Affiliation(s)
- Y Umeda
- Department of Cardiovascular Surgery, Toyohashi Medical Center, Toyohashi, Japan
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18
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Umeda Y, Fukumoto Y, Miyauchi T, Imaizumi M, Shimabukuro K, Mori Y, Takemura H. [Reconstruction of the left common carotid artery for dissective occlusion detected by intra-operative ultrasonography]. Kyobu Geka 2010; 63:355-357. [PMID: 20446601] [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: 05/29/2023]
Abstract
We describe a case of Stanford type A acute aortic dissection. Replacement of the ascending aorta and aortic arch was performed using an "arch 1st technique". Following the completion of replacement, hypotension of the left superficial temporal artery pressure was detected. Ultrasonography revealed dissection of the left common carotid artery (LCCA) and compressive occlusion of the true lumen. Reconstruction of the LCCA was performed in the neck. The patient did well after the operation without any neurological abnormalities.
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Affiliation(s)
- Y Umeda
- Department of General and Cardiothoracic Surgery, Gifu University, Gifu, Japan
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Sasaki K, Odagiri N, Nakamura Y, Yamanaka H, Ma C, Imaizumi M, Atai H, Iizuka H, Nishi K. Comprehensive evaluation of safety pharmacology core battery for monkey in a novel chamber of whole-body plethysmography. J Pharmacol Toxicol Methods 2009. [DOI: 10.1016/j.vascn.2009.04.035] [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: 10/20/2022]
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Affiliation(s)
- Y Matsuno
- Department of Cardiovascular Surgery, Gifu Prefectural General Medical Center, Gifu, Japan.
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21
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Murakami E, Iwata H, Imaizumi M, Takemura H. Prevention of arterial graft spasm by botulinum toxin: an in-vitro experiment. Interact Cardiovasc Thorac Surg 2009; 9:395-8. [DOI: 10.1510/icvts.2009.207076] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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22
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Fujiwara S, Suyama A, Cologne JB, Akahoshi M, Yamada M, Suzuki G, Koyama K, Takahashi N, Kasagi E, Grant EJ, Lagarde E, Hsu WL, Furukawa K, Ohishi W, Tatsukawa Y, Neriishi K, Takahashi I, Ashizawa K, Hida A, Imaizumi M, Nagano J, Cullings HM, Katayama H, Ross NP, Kodama K, Shore RE. Prevalence of adult-onset multifactorial disease among offspring of atomic bomb survivors. Radiat Res 2009; 170:451-7. [PMID: 19024652 DOI: 10.1667/rr1392.1] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The first study to examine whether parental radiation exposure leads to increased heritable risk of common adult-onset multifactorial diseases (i.e., hypertension, diabetes mellitus, hypercholesterolemia, ischemic heart disease, and stroke) was conducted among 11,951 participants in the clinical examination program out of a potential of 24,673 mail survey subjects who were offspring of survivors born from May 1946 through December 1984. Logistic regression analyses demonstrated no evidence of an association between the prevalence of multifactorial diseases in the offspring and parental radiation exposure, after adjusting for age, city, gender and various risk factors. The odds ratio (OR) for a paternal dose of 1 Gy was 0.91 [95% confidence interval (CI) 0.81-1.01, P = 0.08], and that for a maternal dose of 1 Gy was 0.98 (95% CI 0.86-1.10, P = 0.71). There was no apparent effect of parental age at exposure or of elapsed time between parental exposure and birth, but male offspring had a low odds ratio (OR = 0.76 at 1 Gy) for paternal exposure, but cautious interpretation is needed for this finding. The clinical assessment of nearly 12,000 offspring of A-bomb survivors who have reached a median age of about 50 years provided no evidence for an increased prevalence of adult-onset multifactorial diseases in relation to parental radiation exposure.
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Affiliation(s)
- S Fujiwara
- Department of Clinical Studies, Radiation Effects Research Foundation, Hiroshima, Japan.
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23
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Hida A, Akahoshi M, Takagi Y, Ashizawa K, Imaizumi M, Soda M, Maeda R, Nakashima E, Ida H, Kawakami A, Nakamura T, Eguchi K. Prevalence of Sjogren syndrome among Nagasaki atomic bomb survivors. Ann Rheum Dis 2008; 67:689-95. [PMID: 17905783 DOI: 10.1136/ard.2007.073650] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
OBJECTIVES Through a comprehensive epidemiological study, we determined Sjögren syndrome (SS) prevalence and examined the association between SS and ionising radiation dose. METHODS A total of 1008 atomic bomb survivors in Nagasaki agreed to undergo the tests comprising a questionnaire for xerophthalmia and xerostomia, Schirmer-I test, Saxon test, and tests of anti-SS-A/Ro and anti-SS-B/La antibodies, and, if necessary, Rose Bengal stain test, salivary ultrasonographic and MRI examination from November 2002 through October 2004. Diagnosis of SS was based on the American-European Consensus Group criteria, or a modified version thereof. RESULTS Among the 1008 participants (male 398, female 610, average age 71.6 years), 154 participants (15.3%) complained of xerophthalmia, and 264 (26.2%) of xerostomia. Reduced tear flow as assessed by the Schirmer-I test was detected in 371 of 992 participants (37.4%) and reduced saliva flow as assessed by the Saxon test in 203 of 993 participants (20.4%). Among all participants, 38 (3.8%) and 10 (1.0%) participants tested positive for anti-SS-A/Ro and anti-SS-B/La antibodies, respectively. Taking into consideration all the results, 23 participants were diagnosed with SS (primary 20, secondary 3), yielding a prevalence of 2.3%. Although the association between SS and radiation dose was not significant, radiation dose was significantly associated with hyposalivation. CONCLUSIONS The present comprehensive epidemiological study reveals that the prevalence of SS was 2.3% among Nagasaki atomic bomb survivors and was not associated with radiation dose. The association between radiation dose and hyposalivation supported the possibility that radiation exposure damaged salivary gland function.
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Affiliation(s)
- A Hida
- Department of Clinical Studies, Radiation Effects Research Foundation, 1-8-6 Nakagawa, Nagasaki 850-0013, Japan.
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Fujita M, Imaizumi M, Zoghbi S, Fujimura Y, Farris A, Suhara T, Hong J, Pike V, Innis R. Kinetic analysis in healthy humans of [11C]PBR28, a new positron emission tomography radioligand to image the peripheral benzodiazepine receptor. Neuroimage 2008. [DOI: 10.1016/j.neuroimage.2008.04.208] [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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Fujita M, Zoghbi S, Imaizumi M, Hong J, Gladding R, Pike V, Innis R. Species Differences in Brain Phosphodiesterase Levels Measured With [11C](R)-Rolipram PET. Neuroimage 2008. [DOI: 10.1016/j.neuroimage.2008.04.152] [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: 11/15/2022] Open
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26
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Umeda Y, Fukumoto Y, Miyauchi T, Imaizumi M, Shimabukuro K, Mori Y, Takemura H. [Anaphylactic shock related to aprotinin induced by anti-aprotinin immunoglobulin G antibody alone; report of a case]. Kyobu Geka 2007; 60:69-71. [PMID: 17249542] [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: 05/13/2023]
Abstract
Anaphylactic shock related to aprotinin has been reported to be induced exclusively in the presence of IgE antibody. And the possibility of anaphylactic shock induced by anti-aprotinin IgG antibody alone was controversial. In this paper, we describe the first case of anaphylactic shock induced by aprotinin-specific IgG antibody alone. A 55-year-old man underwent surgical repair of the descending aorta with the use of aprotinin at 2 months after first aprotinin usage. Immediately after initiation of cardiopulmonary bypass with the continuous infusion of aprotinin, clinical symptoms of anaphylactic reaction were found. Postoperative drug lymphocyte stimulation test for aprotinin and aprotinin-specific IgE antibody were negative, but aprotinin-specific IgG antibody was 163 mg/l and positive.
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Affiliation(s)
- Y Umeda
- Advanced Surgery, Department of Organ Pathobiology, Gifu University School of Medicine, Gifu, Japan
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27
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Inukai T, Hirose K, Inaba T, Kurosawa H, Hama A, Inada H, Chin M, Nagatoshi Y, Ohtsuka Y, Oda M, Goto H, Endo M, Morimoto A, Imaizumi M, Kawamura N, Miyajima Y, Ohtake M, Miyaji R, Saito M, Tawa A, Yanai F, Goi K, Nakazawa S, Sugita K. Hypercalcemia in childhood acute lymphoblastic leukemia: frequent implication of parathyroid hormone-related peptide and E2A-HLF from translocation 17;19. Leukemia 2006; 21:288-96. [PMID: 17183364 DOI: 10.1038/sj.leu.2404496] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Hypercalcemia is relatively rare but clinically important complication in childhood leukemic patients. To clarify the clinical characteristics, mechanisms of hypercalcemia, response to management for hypercalcemia, incidence of t(17;19) and final outcome of childhood acute lymphoblastic leukemia (ALL) accompanied by hypercalcemia, clinical data of 22 cases of childhood ALL accompanied by hypercalcemia (>12 mg/dl) reported in Japan from 1990 to 2005 were retrospectively analyzed. Eleven patients were 10 years and older. Twenty patients had low white blood cell count (<20 x 10(9)/l), 15 showed hemoglobin> or =8 g/dl and 14 showed platelet count > or =100 x 10(9)/l. Parathyroid hormone-related peptide (PTHrP)-mediated hypercalcemia was confirmed in 11 of the 16 patients in whom elevated-serum level or positive immunohistochemistry of PTHrP was observed. Hypercalcemia and accompanying renal insufficiency resolved quickly, particularly in patients treated with bisphosphonate. t(17;19) or add(19)(p13) was detected in five patients among 17 patients in whom karyotypic data were available, and the presence of E2A-HLF was confirmed in these five patients. All five patients with t(17;19)-ALL relapsed very early. Excluding the t(17;19)-ALL patients, the final outcome of ALL accompanied by hypercalcemia was similar to that of all childhood ALL patients, indicating that the development of hypercalcemia itself is not a poor prognostic factor.
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Affiliation(s)
- T Inukai
- Department of Pediatrics, University of Yamanashi, School of Medicine, Yamanashi, Japan.
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28
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Osaki Y, Takasawa M, Doi K, Nishimura H, Iwaki T, Imaizumi M, Oku N, Hatazawa J, Kubo T. Auditory and tactile processing in a postmeningitic deaf-blind patient with a cochlear implant. Neurology 2006; 67:887-90. [PMID: 16966560 DOI: 10.1212/01.wnl.0000234141.72891.13] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The authors examined the neural function of a postmeningitic deaf-blind patient who regained his hearing with a multichannel cochlear implant. Auditory stimuli activated the temporal cortices of both sides in a manner similar to that of controls, reflecting the successful recruitment of the auditory cortex after implantation. The patient's occipital lobes were deactivated during the tactile language task, the results of which were completely different from those before cochlear implantation.
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Affiliation(s)
- Y Osaki
- Department of Otorhinolaryngology and Sensory Organ Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan.
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Ogawa M, Saito Y, Imaizumi M, Wada H, Jinno K. Longitudinal Miniaturization of Fiber-Packed Capillary Column in High Temperature Gas Chromatography. Chromatographia 2006. [DOI: 10.1365/s10337-006-0771-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Niizuma H, Nakamura Y, Ozaki T, Nakanishi H, Ohira M, Isogai E, Kageyama H, Imaizumi M, Nakagawara A. Bcl-2 is a key regulator for the retinoic acid-induced apoptotic cell death in neuroblastoma. Oncogene 2006; 25:5046-55. [PMID: 16568081 DOI: 10.1038/sj.onc.1209515] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Retinoic acid (RA) has been shown to induce neuronal differentiation and/or apoptosis, and is widely used as a chemotherapeutic agent for treating the patients with neuroblastoma. However, the therapeutic effect of RA is still limited. To unveil the molecular mechanism(s) inducing differentiation and apoptosis in neuroblastoma cells, we compared CHP134 and NB-39-nu cell lines, in which all-trans-RA (ATRA) induces apoptosis, with LA-N-5 and RTBM1 cell lines, in which it induces neuronal differentiation. Here, we found that Bcl-2 was strongly downregulated in CHP134 and NB-39-nu cells, whereas it was abundantly expressed in LA-N-5 and RTBM1 cells. ATRA-mediated apoptosis in CHP134 and NB-39-nu cells was associated with a significant activation of caspase-9 and caspase-3 as well as cytoplasmic release of cytochrome c from mitochondria in a p53-independent manner. Enforced expression of Bcl-2 significantly inhibited ATRA-mediated apoptosis in CHP134 cells. In addition, treatment of RTBM1 cells with a Bcl-2 inhibitor, HA14-1, enhanced apoptotic response induced by ATRA. Of note, two out of 10 sporadic neuroblastomas expressed bcl-2 at undetectable levels and underwent cell death in response to ATRA in primary cultures. Thus, our present results suggest that overexpression of Bcl-2 is one of the key mechanisms to give neuroblastoma cells the resistance against ATRA-mediated apoptosis. This may provide a new therapeutic strategy against the ATRA-resistant and aggressive neuroblastomas by combining treatment with ATRA and a Bcl-2 inhibitor.
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Affiliation(s)
- H Niizuma
- Division of Biochemistry, Chiba Cancer Center Research Institute, Chuoh-ku, Chiba, Japan
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31
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Fujita M, Imaizumi M, D'Sa C, Zoghbi S, Hong J, Musachio J, Gee A, Pike V, Duman R, B Innis R. In vivo and in vitro measurement of brain phosphodiesterase 4 in rats after antidepressant treatment. Neuroimage 2006. [DOI: 10.1016/j.neuroimage.2006.04.126] [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: 11/26/2022] Open
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32
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Imaizumi M, Zoghbi S, Hong J, Musachio J, Kim H, Chuang DM, Pike V, Innis R, Fujita M. PET imaging of cerebral ischemia with a peripheral benzodiazepine receptor ligand. Neuroimage 2006. [DOI: 10.1016/j.neuroimage.2006.04.025] [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] Open
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33
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Fukumoto Y, Umeda Y, Imaizumi M, Miyauchi T, Shimabukuro K, Takemura H. [Arch first technique using handmade branched graft]. Kyobu Geka 2005; 58:997-1001. [PMID: 16235850] [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: 05/04/2023]
Abstract
We created a method using handmade branched graft to do the aortic arch surgery easier and safer. We made the branched graft using 12 and 8 mm vascular graft. A 77-year-old man with Stanford type A aortic dissection was operated with this method under deep hypothermia. After aortic root manipulation, perfusion of the aortic arch was stopped and selective cerebral perfusion was established. Left subclavian artery (LSCA) was anastomosed to one of the branches. The perfusion of the LSCA was re-started via one of its branches. Respectively, left common carotid artery and brachiocephalic artery reconstruction and reperfusion were performed in a same fashion. After distal anastomosis, anastomosis between the branched graft and main graft was performed consecutively. Postoperative course was uneventful and there was no complication. The treatment of our branched graft was easier than that of ready-made 4-branched graft. We could perform the operation under clear view for its movability with minimal cerebral ischemic time.
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Affiliation(s)
- Y Fukumoto
- Department of Advanced Surgery, Division of Organ Pathobiology, Gifu University School of Medicine, Gifu, Japan
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Prima V, Gore L, Caires A, Boomer T, Yoshinari M, Imaizumi M, Varella-Garcia M, Hunger SP. Cloning and functional characterization of MEF2D/DAZAP1 and DAZAP1/MEF2D fusion proteins created by a variant t(1;19)(q23;p13.3) in acute lymphoblastic leukemia. Leukemia 2005; 19:806-13. [PMID: 15744350 DOI: 10.1038/sj.leu.2403684] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
We analyzed the TS-2 acute lymphoblastic leukemia (ALL) cell line that contains a t(1;19)(q23;p13.3) but lacks E2A-PBX1 fusion typically present in leukemias with this translocation. We found that the t(1;19) in TS-2 fuses the 19p13 gene DAZAP1 (Deleted in Azoospermia-Associated Protein 1) to the 1q23 gene MEF2D (Myocyte Enhancer Factor 2D), leading to expression of reciprocal in-frame DAZAP1/MEF2D and MEF2D/DAZAP1 transcripts. MEF2D is a member of the MEF2 family of DNA binding proteins that activate transcription of genes involved in control of muscle cell differentiation, and signaling pathways that mediate response to mitogenic signals and survival of neurons and T-lymphocytes. DAZAP1 is a novel RNA binding protein expressed most abundantly in the testis. We demonstrate that MEF2D/DAZAP1 binds avidly and specifically to DNA in a manner indistinguishable from that of native MEF2D and is a substantially more potent transcriptional activator than MEF2D. We also show that DAZAP1/MEF2D is a sequence-specific RNA-binding protein. MEF2D has been identified as a candidate oncogene in murine retroviral insertional mutagenesis studies. Our data implicate MEF2D in human cancer and suggest that MEF2D/DAZAP1 and/or DAZAP1/MEF2D contribute to leukemogenesis by altering signaling pathways normally regulated by wild-type MEF2D and DAZAP1.
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Affiliation(s)
- V Prima
- Department of Pediatrics, University of Florida College of Medicine and the University of Florida Shands Cancer Center, Gainesville, FL 32610, USA
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35
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Ogata N, Imaizumi M, Kurokawa H, Arichi M, Matsumura M. Optic nerve compression by normal carotid artery in patients with normal tension glaucoma. Br J Ophthalmol 2005; 89:174-9. [PMID: 15665348 PMCID: PMC1772506 DOI: 10.1136/bjo.2004.047035] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/07/2004] [Indexed: 12/30/2022]
Abstract
AIM To determine whether compression of the optic nerve by the intracranial carotid artery (ICA) can be a causative factor of normal tension glaucoma (NTG). METHODS The medical records of 103 eyes of 54 Japanese patients with NTG and 104 eyes of 52 age matched control patients were reviewed. The neuroradiological findings of magnetic resonance images (MRI) were evaluated to determine the relation between the optic nerve and ICA. The clinical characteristics and general medical conditions, such as diabetes and systemic hypertension, were also compared between the two groups. RESULTS The prevalence of optic nerve compression by the ICA in patients with NTG was 49.5%, which was significantly higher than that in control group with 34.6% (p = 0.035). Bilateral compression of the optic nerve was detected in 22 patients with NTG (40.7%), and this was also significantly higher (p = 0.029) than that in the control group (11 patients, 21.2%). In the NTG group, eyes with cup/disc ratio (C/D ratio) > or =0.7 showed a higher percentage of compression (52.6%) compared with eyes with C/D ratio of <0.7 (12.5%; p = 0. 042). The presence of diabetes and hypertension did not affect the incidence of optic nerve compression by ICA significantly. CONCLUSIONS The significantly higher percentage of NTG patients who had optic nerve compression by the ICA suggests that compression of the optic nerve by ICA may be a possible causative factor or a risk factor for optic nerve damage in some patients with NTG.
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Affiliation(s)
- N Ogata
- Department of Ophthalmology, Kansai Medical University, 10-15 Fumizono-cho, Moriguchi, Osaka 570-8507, Japan.
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Imaizumi M, Saito Y, Ban K, Wada H, Hayashida M, Jinno K. In-Valve Sample Preparation Cartridge Designed for Microcolumn Liquid Chromatography. Chromatographia 2004. [DOI: 10.1365/s10337-004-0428-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Hamada C, Ohta M, Wada H, Fujimura S, Kodama K, Imaizumi M, Nakanishi Y, Matsuoka N. Survival benefit of oral UFT for adjuvant chemotherapy after completely resected non-small-cell lung cancer. J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.7002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- C. Hamada
- Tokyo University of Science, Tokyo, Japan; Japan Lung Cancer Research Group, Tokyo, Japan; West Japan Study Group for Lung Cancer Surgery, Kyoto, Japan; North-east Japan Study Group for Lung Cancer, Sendai, Japan; Osaka Lung Cancer Study Group, Osaka, Japan; Adjuvant Chemotherapy for Lung Cancer Study Group, Nagoya, Japan
| | - M. Ohta
- Tokyo University of Science, Tokyo, Japan; Japan Lung Cancer Research Group, Tokyo, Japan; West Japan Study Group for Lung Cancer Surgery, Kyoto, Japan; North-east Japan Study Group for Lung Cancer, Sendai, Japan; Osaka Lung Cancer Study Group, Osaka, Japan; Adjuvant Chemotherapy for Lung Cancer Study Group, Nagoya, Japan
| | - H. Wada
- Tokyo University of Science, Tokyo, Japan; Japan Lung Cancer Research Group, Tokyo, Japan; West Japan Study Group for Lung Cancer Surgery, Kyoto, Japan; North-east Japan Study Group for Lung Cancer, Sendai, Japan; Osaka Lung Cancer Study Group, Osaka, Japan; Adjuvant Chemotherapy for Lung Cancer Study Group, Nagoya, Japan
| | - S. Fujimura
- Tokyo University of Science, Tokyo, Japan; Japan Lung Cancer Research Group, Tokyo, Japan; West Japan Study Group for Lung Cancer Surgery, Kyoto, Japan; North-east Japan Study Group for Lung Cancer, Sendai, Japan; Osaka Lung Cancer Study Group, Osaka, Japan; Adjuvant Chemotherapy for Lung Cancer Study Group, Nagoya, Japan
| | - K. Kodama
- Tokyo University of Science, Tokyo, Japan; Japan Lung Cancer Research Group, Tokyo, Japan; West Japan Study Group for Lung Cancer Surgery, Kyoto, Japan; North-east Japan Study Group for Lung Cancer, Sendai, Japan; Osaka Lung Cancer Study Group, Osaka, Japan; Adjuvant Chemotherapy for Lung Cancer Study Group, Nagoya, Japan
| | - M. Imaizumi
- Tokyo University of Science, Tokyo, Japan; Japan Lung Cancer Research Group, Tokyo, Japan; West Japan Study Group for Lung Cancer Surgery, Kyoto, Japan; North-east Japan Study Group for Lung Cancer, Sendai, Japan; Osaka Lung Cancer Study Group, Osaka, Japan; Adjuvant Chemotherapy for Lung Cancer Study Group, Nagoya, Japan
| | - Y. Nakanishi
- Tokyo University of Science, Tokyo, Japan; Japan Lung Cancer Research Group, Tokyo, Japan; West Japan Study Group for Lung Cancer Surgery, Kyoto, Japan; North-east Japan Study Group for Lung Cancer, Sendai, Japan; Osaka Lung Cancer Study Group, Osaka, Japan; Adjuvant Chemotherapy for Lung Cancer Study Group, Nagoya, Japan
| | - N. Matsuoka
- Tokyo University of Science, Tokyo, Japan; Japan Lung Cancer Research Group, Tokyo, Japan; West Japan Study Group for Lung Cancer Surgery, Kyoto, Japan; North-east Japan Study Group for Lung Cancer, Sendai, Japan; Osaka Lung Cancer Study Group, Osaka, Japan; Adjuvant Chemotherapy for Lung Cancer Study Group, Nagoya, Japan
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38
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Seki Y, Imaizumi M, Shigemitsu K, Yoshioka H, Ueda Y. [Mucinous adenocarcinoma of the anterior mediastinum]. Kyobu Geka 2004; 57:413-6. [PMID: 15151047] [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: 04/29/2023]
Abstract
The authors report are a rare case of primary mucinous adenocarcinoma of the anterior mediastinum in a 34-year-old Japanese woman. Routine chest radiography revealed an abnormal mass lesion in the left upper mediastinum. Her serum CA 19-9 level was elevated at 299 (normal < 37) U/ml. The large tumor in the anterior mediastinum, 8 cm in diameter, were made of multicystic part with thick wall and thick spetrum and solid part in chest computed tomography (CT). Teratoma was suggested by percutaneous needle biopsy under CT scanning. When the chest was opened through a median sternotomy, adding a left collar incision, we found a hard tumor occupying the superior anterior mediastinum and then resected the tumor together with the left brachiocephalic vein, the left pleura, the pericardium and the left phrenic nerve because of invaded them. Grossly, the tumor was 13 x 10 x 8 cm and weighted 400 g. Pathologic diagnosis was mucinous adenocarcinoma of the anterior mediastinum. No primary cancer lesions were found in pancreas, ovarium, gastrointestinal tract and mammary gland. Microscopic examination showed minimal atypia site in mucinous adenocarcinoma and normal thymic tissues surrounding this tumor. These findings have led this case to conclude the primary tumor of thymus.
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Affiliation(s)
- Y Seki
- National Nagoya Hospital, Nagoya, Japan
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39
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Hamada C, Ohta M, Wada H, Fujimura S, Kodama K, Imaizumi M, Nakanishi Y, Matsuoka N. 768 Efficacy of oral UFT for adjuvant chemotherapy after complete resection of non-small cell lung cancer: Meta-analysis of six randomized trials in 2003 patients. EJC Suppl 2003. [DOI: 10.1016/s1359-6349(03)90793-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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Abstract
Many human autoimmune diseases, including those of the thyroid gland, are affected by immune changes during pregnancy and the postpartum period. To investigate this influence, we have developed an animal model of pregnancy thyroiditis by using thyroglobulin (Tg)-induced experimental autoimmune thyroiditis (EAT). We now report a study of the post-partum period in mice with EAT. At 5 weeks postpartum, which was 9 weeks after the completion of a Tg immunization regime, the mean thyroiditis grade was significantly increased in the postpartum group from 0.23 to 0.43 (p<0.05) and the thyroiditis Index, which reflected both the frequency and severity of thyroiditis, was similarly increased compared to controls (29.0 vs 9.0). When Tg immunized CBA/J (H-2k) female mice were mated with BALB/c (H-2d) males, there was a similar increase in the severity of thyroiditis in the postpartum period as seen with CBA/J males suggesting that allogeneic factors were not able to further this postpartum exacerbation. Spleen cell IL-4 secretion was enhanced in the postpartum but only in the presence of thyroiditis indicating enhanced activity of Th2 immune responses. There were no differences in IFN-gamma secretion, titers of anti-Tg, CD8+ & CD4+ T cells and T cell chemokine receptor (CCR5, CCR3) expression between non-pregnant control mice with thyroiditis and postpartum thyroiditis. In summary, we found that the severity of EAT during the postpartum was significantly greater than in non-pregnant control mice and was associated with enhanced Th2 immune responses. The allogenicity of the pregnancy had no influence on these findings. The lack of allogenic impact was in contrast to earlier observations in pregnancy itself where an exacerbation of thyroiditis was male strain-dependent and involved primarily Th1 responses. This indicated that the postpartum exacerbation of autoimmune thyroid disease was not a simple response to fetal antigens but secondary to unique postpartum factors.
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Affiliation(s)
- M Imaizumi
- Division of Endocrinology and Metabolism, Mount Sinai School of Medicine, New York, NY 10128, USA
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Abstract
To investigate a possible relationship between fetal microchimerism and autoimmune thyroiditis, we looked for the presence of fetal cells in the maternal blood and thyroid gland in murine experimental autoimmune thyroiditis (EAT). We used a quantitative PCR-ELISA for products of the SRY locus on the Y chromosome to detect fetal male cells during pregnancy and the postpartum period with a sensitivity of approximately 1 male cell/10(5) female cells. Within the thyroid glands, 12 of 26 (46%) Tg-immunized pregnant mice were SRY positive (range, 1-1700 cells), whereas, in contrast, few SRY transcripts were detected in control thyroids from nonimmunized pregnant mice (P < 0.05). At 5 wk postpartum, although SRY was still detected in the thyroids of 12 of 40 (30%) Tg-immunized mice, the number of male cells was markedly decreased (range, 1-30), and by 10 wk postpartum SRY had disappeared. Using allogeneic male mice heterozygous for green fluorescent protein expression, green fluorescent fetal cells were detected in the blood and bone marrow of pregnant mice. However, green cells were only found in thyroid glands from Tg-immunized pregnant mice that had green fluorescent protein-transgenic green fetuses and not in control nonimmunized pregnant mice. Cytologically, the fetal cells appeared to be of variable origin. Using antibody-mediated affinity purification of thyroid digests we showed this cell population to include fetal cells of T cell and dendritic cell lineage. Hence, fetal cells of immune origin were shown to accumulate within the thyroid glands of mice with EAT during pregnancy and the early postpartum. These data indicated that the inflamed thyroid gland was capable of accumulating fetal cells, including T cells and dendritic cells. Such active immune cells may have a profound regulatory influence on autoimmune thyroiditis in pregnancy and the postpartum period.
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Affiliation(s)
- M Imaizumi
- Division of Endocrinology and Metabolism, Department of Medicine, Mount Sinai School of Medicine, 1 Gustave L. Levy Place, New York, NY 10128, USA
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Kawasaki H, Isoyama K, Eguchi M, Hibi S, Kinukawa N, Kosaka Y, Oda T, Oda M, Nishimura S, Imaizumi M, Okamura T, Hongo T, Okawa H, Mizutani S, Hayashi Y, Tsukimoto I, Kamada N, Ishii E. Superior outcome of infant acute myeloid leukemia with intensive chemotherapy: results of the Japan Infant Leukemia Study Group. Blood 2001; 98:3589-94. [PMID: 11739161 DOI: 10.1182/blood.v98.13.3589] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
This study analyzed data on 35 infants with acute myeloid leukemia (AML) who were treated with intensive chemotherapy between 1995 and 1998 in Japan. The incidence of boys, younger age (< 6 months old), and hyperleukocytosis at onset was high in patients with the M4/M5 subtype (n = 23) in the French-American-British classification, compared with the non-M4/M5 subtype (n = 12). Thirteen (56%) and 16 (70%) patients with the M4/M5 subtype also showed 11q23 translocations and MLL gene rearrangements, respectively, whereas only one patient with the non-M4/M5 subtype had this rearrangement. All 35 patients were treated with the ANLL91 protocol consisting of etoposide, high-dose cytarabine, and anthracyclines. Overall survival and the event-free survival (EFS) rates at 3 years of all patients were 76% (95% confidence interval [CI], 61.3%-90.7%) and 72% (95% CI, 56.4%-87.9%), respectively. EFS showed no significant difference between 2 subgroups divided by age, gender, presence of the MLL gene rearrangements, and white blood cell count at onset; EFS in patients with the M4/M5 subtype tended to be better than those with the non-M4/M5 subtype. Although all 6 patients who underwent allogeneic stem cell transplantation (SCT) have been in complete remission, no benefit of SCT was confirmed. These findings suggest that the intensive chemotherapy with the ANLL91 protocol might have been responsible for the observed good outcome of infant AML, even without SCT. The presence of the MLL gene rearrangements or the age at onset had no impact on the outcome of infant AML.
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MESH Headings
- Aclarubicin/administration & dosage
- Antibiotics, Antineoplastic/administration & dosage
- Antibiotics, Antineoplastic/adverse effects
- Antineoplastic Combined Chemotherapy Protocols/administration & dosage
- Antineoplastic Combined Chemotherapy Protocols/adverse effects
- Chromosomes, Human, Pair 11
- Cytarabine/administration & dosage
- Cytarabine/adverse effects
- DNA-Binding Proteins/genetics
- Disease-Free Survival
- Doxorubicin/administration & dosage
- Doxorubicin/analogs & derivatives
- Etoposide/administration & dosage
- Etoposide/adverse effects
- Female
- Hematopoietic Stem Cell Transplantation
- Histone-Lysine N-Methyltransferase
- Humans
- Immunophenotyping
- Infant
- Leukemia, Myeloid, Acute/drug therapy
- Leukemia, Myeloid, Acute/genetics
- Leukemia, Myeloid, Acute/mortality
- Male
- Mitoxantrone/administration & dosage
- Myeloid-Lymphoid Leukemia Protein
- Prognosis
- Proto-Oncogenes
- Remission Induction
- Survival Rate
- Transcription Factors
- Translocation, Genetic
- Treatment Outcome
- Vincristine/administration & dosage
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Affiliation(s)
- H Kawasaki
- Department of Pediatrics, Mie University, Japan
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Sakamoto O, Yoshinari M, Rikiishi T, Fujiwara I, Imaizumi M, Tsuchiya S, Iinuma K. Hypercalcemia due to all-trans retinoic acid therapy for acute promyelocytic leukemia: a case report of effective treatment with bisphosphonate. Pediatr Int 2001; 43:688-90. [PMID: 11737750 DOI: 10.1046/j.1442-200x.2001.01457.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- O Sakamoto
- Department of Pediatrics, Tohoku University School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai 980-8574, Japan.
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Manabe Y, Toyoda T, Kuroda K, Imaizumi M, Yamamoto T, Fushiki T. Effect of diazepam binding inhibitor (DBI) on the fluid intake, preference and the taste reactivity in mice. Behav Brain Res 2001; 126:197-204. [PMID: 11704264 DOI: 10.1016/s0166-4328(01)00263-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
We have reported that a diazepam binding inhibitor (DBI)-like peptide is released by the aversive quinine stimuli 'Chem. Senses 25 (2000) 739'. To determine the effect of DBI on the fluid intake, we injected a DBI peptide fragment into the fourth ventricle in mice. DBI suppressed the intake of 5% sucrose, water and 0.9 mM quinine-HCl and the preference for 0.05% saccharin. Administration (i.p.) of flumazenil, a benzodiazepine receptor antagonist, 20 min before the injection of DBI (i.c.v.) antagonized the suppressive effect of DBI on the intake and the preference for saccharin. We also studied the dose dependency of the effect of DBI on the intake of 5% sucrose. Injection of DBI in excess of 3 microg suppressed the intake of 5% sucrose in mice. Furthermore, injection of DBI (i.c.v.) increased the aversive response to 0.9% NaCl in the taste reactivity in mice. These results suggest that DBI affect the preference to food.
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Affiliation(s)
- Y Manabe
- Laboratory of Nutrition Chemistry, Division of Applied Life Science, Graduate School of Agriculture, Kyoto University, Kitashirakawa Oiwake-cho, Kyoto 606-8502, Japan
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45
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Abstract
A previously developed capillary zone electrophoresis (CZE) method with indirect UV detection for the simultaneous determination of inorganic and organic anions, amino acids and carbohydrates using 20 mM 2,6-pyridinedicarboxylic acid (PDC) as the background electrolyte was extended to allow determination of 206 anions including those above--mentioned and physiological amino acids, nucleotides, aromatic acids, haloacetic acids, alcohols, phosphorylated saccharides, oxyhalides, metal oxoacids, metal-ethylenediaminetetraacetic acid (EDTA) complexes, forensic anions, Good's buffers and herbicides. Every compound could be analyzed and their electrophoretic mobility determined simply by selecting detection wavelength. This method is simple and universal for anion analysis, and could be readily applied to the simultaneous determination of anionic compounds. In this work, it was used to identify and quantify important anions in sea urchin and sake.
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Affiliation(s)
- T Soga
- Institute for Advanced Biosciences, Keio University, Tsuruoka, Yamagata, Japan.
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Takasawa M, Hashikawa K, Ohtsuki T, Imaizumi M, Oku N, Kitagawa K, Hori M, Matsumoto M. Transient crossed cerebellar diaschisis following thalamic hemorrhage. J Neuroimaging 2001; 11:438-40. [PMID: 11677887 DOI: 10.1111/j.1552-6569.2001.tb00076.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
This report concerns a 65-year-old right-handed woman with cerebral hemorrhage who presented with mild right-sided hemiparesis. Computed tomography (CT) revealed hematoma in the left thalamus and compression of the posterior limb of the internal capsule by a brain edema surrounding the lesion. 99mTc-hexamethylpropyleneamine oxime (HMPAO) single photon emission computed tomography (SPECT) images obtained 4 days after onset showed hypoperfusion in the left thalamus containing a hematoma as well as contralateral cerebellar hypoperfusion to the supratentorial lesion, which is well recognized as crossed cerebellar diaschisis (CCD) after stroke. CT 14 days after the onset revealed reduction of the brain edema of the posterior limb of the internal capsule accompanied by gradual neurological improvement. SPECT obtained 14 and 28 days later showed that CCD had disappeared. In this case report, the authors discuss the disappearance of CCD due to transient edematous compression of the internal capsule following thalamic hemorrhage on serial 99mTc-HMPAO SPECT scans. CCD was possibly caused by the lesion confined to the posterior limb of the internal capsule, which anatomically constitutes the cerebropontocerebellar pathway.
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Affiliation(s)
- M Takasawa
- Department of Internal Medicine and Therapeutics, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita City, Osaka, 565-0871, Japan.
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47
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Imaizumi M, Watanabe A, Kikuta A, Takano T, Ito E, Shimizu T, Tsuchiya S, Iinuma K, Konno T, Ohi R, Hayashi Y. Improved survival of children with advanced neuroblastoma treated by intensified therapy including myeloablative chemotherapy with stem cell transplantation: a retrospective analysis from the Tohoku Neuroblastoma Study Group. TOHOKU J EXP MED 2001; 195:73-83. [PMID: 11846211 DOI: 10.1620/tjem.195.73] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
In the hospitals of the Tohoku Neuroblastoma Study Group (TNBSG), treatment for children with advanced neuroblastoma (NB) was intensified in the mid-1990's with the introduction of myeloablative therapy (MT) with stem cell transplantation (SCT) including the use of autologous peripheral blood stem cells (PBSC) and bone marrow transplantation (BMT). In this report, we examined whether the intensified therapy improved the outcome of children with advanced NB (age> 12 months) who were diagnosed between 1991 and 1997. Patients were 36 children (23 boys and 13 girls) with an average age of 3.4 years (range; 1 to 14 years). Six of them had stage III disease, and the other 30 had stage IV. They were treated initially with induction chemotherapy, surgery, and post-operative chemoradiotherapy, after which 17 of them continued further chemotherapy and the other 19 received MT/SCT (18 with PBSCT and 1 with BMT). Progression-free survival (PFS) rate at seven years from diagnosis was 43.5% for all patients, 66.7% for stage III patients and 38.2% for stage IV patients. The difference between stage III and IV patients was not significant. Among the 30 patients with stage IV disease, PFS at seven years was significantly higher in the 19 patients who received MT/SCT (55.6%) than in the 11 patients who did not receive it (12.5%). There was no difference in clinical and biological risk factors between these two groups, except for the proportion of patients with favorable response to initial therapy (36% and 80% for patients without and with MT/SCT, respectively). Furthermore, the proportion of patients with N-myc amplification was significantly higher in patients with progressive disease (PD) after MT/SCT than in those in CR after MT/SCT. The results of this retrospective study of children with advanced NB suggest that therapy intensification involving MT/SCT might result in lengthened survival time for patients with stage IV disease, and that post-transplant PD remains a risk for patients with high levels of N-myc amplification.
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Affiliation(s)
- M Imaizumi
- Department of Pediatric Hematology and Oncology, Tohoku University School of Medicine, Sendai, Japan.
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Abstract
At 4 weeks and 8 months following initial symptoms, we performed single-photon emission computed tomography (SPECT) with acetazolamide (ACZ) testing in a patient recovering from acute encephalitis, possibly acute disseminated encephalomyelitis (ADEM). Both regional hypoperfusion at baseline and diminished cerebrovascular reserve were seen after focal hyperintensities had disappeared in magnetic resonance imaging (MRI). The time course of SPECT abnormalities reflected the clinical course more closely than the time course of MRI abnormalities. Thus, persistent cerebral circulatory impairment probably contributed to cognitive and language deficits observed at the subacute stage.
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Affiliation(s)
- M Okamoto
- Department of Internal Medicine, Osaka National Hospital, Hoenzaka, Chuo-ku, Osaka, Japan.
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Affiliation(s)
- M Imaizumi
- Laboratory of Nutritional Chemistry, Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Kyoto, 606-8502, Japan.
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Shigemitsu K, Sekido Y, Usami N, Mori S, Sato M, Horio Y, Hasegawa Y, Bader SA, Gazdar AF, Minna JD, Hida T, Yoshioka H, Imaizumi M, Ueda Y, Takahashi M, Shimokata K. Genetic alteration of the beta-catenin gene (CTNNB1) in human lung cancer and malignant mesothelioma and identification of a new 3p21.3 homozygous deletion. Oncogene 2001; 20:4249-57. [PMID: 11464291 DOI: 10.1038/sj.onc.1204557] [Citation(s) in RCA: 81] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2001] [Revised: 04/12/2001] [Accepted: 04/18/2001] [Indexed: 12/29/2022]
Abstract
The beta-catenin gene (CTNNB1) has been shown to be genetically mutated in various human malignancies. To determine whether the beta-catenin gene is responsible for oncogenesis in thoracic malignancies, we searched for the mutation in 166 lung cancers (90 primary tumors and 76 cell lines), one blastoma and 10 malignant mesotheliomas (two primary tumors and eight cell lines). Among the lung cancers, including 43 small cell lung cancers (SCLCs) and 123 non-small cell lung cancers (NSCLCs), we identified four alterations in exon 3, which is the target region of mutation for stabilizing beta-catenin. One primary adenocarcinoma had a somatic mutation from C to G, leading to an amino acid substitution from Ser to Cys at codon 37. Among the cell lines, SCLC NCI-H1092 had a mutation from A to G, leading to an Asp to Gly substitution at codon 6, NSCLC HCC15 had a mutation from C to T, leading to a Ser to Phe substitution at codon 45, and NSCLC NCI-H358 had a mutation from A to G, leading to a Thr to Ala substitution at codon 75. One blastoma also had a somatic mutation from C to G, leading to a Ser to Cys substitution at codon 37. Among the 10 malignant mesotheliomas, we identified a homozygous deletion in the NCI-H28 cell line. Cloning of the rearranged fragment from NCI-H28 indicated that all the exons except exon 1 of the beta-catenin gene are deleted and that the deletion junction is 13 kb downstream from exon 1. Furthermore, Northern blot analysis of 26 lung cancer and eight mesothelioma cell line RNAs detected ubiquitous expression of the beta-catenin messages except NCI-H28, although Western blot analysis showed that relatively less amounts of protein products were expressed in some of lung cancer cell lines. Our findings suggest that the beta-catenin gene is infrequently mutated in lung cancer and that the NCI-H28 homozygous deletion of the beta-catenin gene might indicate the possibility of a new tumor suppressor gene residing in this region at 3p21.3, where various types of human cancers show frequent allelic loss.
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Affiliation(s)
- K Shigemitsu
- Department of Thoracic Surgery, Nagoya University School of Medicine, Nagoya 466-8550, Japan
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