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Okano N, Furukawa N, Yoshida Y, Koitabashi N, Ohno T. The Potential Therapeutic Effects of Carbon Ion Beams and X-Rays on Mice with Heart Failure: Preliminary Results. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.1612] [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: 11/30/2022]
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Ashikawa S, Komatsu Y, Kawai Y, Aoyama K, Nakano S, Cui X, Hayakawa M, Sakabe N, Furukawa N, Ikeda K, Murohara T, Nagata K. Pharmacological inhibition of the lipid phosphatase PTEN ameliorates heart damage and adipose tissue inflammation in stressed rats with metabolic syndrome. Physiol Rep 2022; 10:e15165. [PMID: 35005845 PMCID: PMC8744130 DOI: 10.14814/phy2.15165] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 12/15/2021] [Accepted: 12/17/2021] [Indexed: 06/14/2023] Open
Abstract
Phosphatidylinositol 3-kinase (PI3K) signaling promotes the differentiation and proliferation of regulatory B (Breg) cells, and the lipid phosphatase phosphatase and tensin homolog deleted on chromosome 10 (PTEN) antagonizes the PI3K-Akt signaling pathway. We previously demonstrated that cardiac Akt activity is increased and that restraint stress exacerbates hypertension and both heart and adipose tissue (AT) inflammation in DS/obese rats, an animal model of metabolic syndrome (MetS). We here examined the effects of restraint stress and pharmacological inhibition of PTEN on heart and AT pathology in such rats. Nine-week-old animals were treated with the PTEN inhibitor bisperoxovanadium-pic [bpV(pic)] or vehicle in the absence or presence of restraint stress for 4 weeks. BpV(pic) treatment had no effect on body weight or fat mass but attenuated hypertension in DS/obese rats subjected to restraint stress. BpV(pic) ameliorated left ventricular (LV) inflammation, fibrosis, and diastolic dysfunction as well as AT inflammation in the stressed rats. Restraint stress reduced myocardial capillary density, and this effect was prevented by bpV(pic). In addition, bpV(pic) increased the proportions of Breg and B-1 cells as well as reduced those of CD8+ T and B-2 cells in AT of stressed rats. Our results indicate that inhibition of PTEN by bpV(pic) alleviated heart and AT inflammation in stressed rats with MetS. These positive effects of bpV(pic) are likely due, at least in part, to a reduction in blood pressure, an increase in myocardial capillary formation, and an altered distribution of immune cells in fat tissue that result from the activation of PI3K-Akt signaling.
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Affiliation(s)
- Sao Ashikawa
- Pathophysiology SciencesDepartment of Integrated Health SciencesNagoyaJapan
| | - Yuki Komatsu
- Pathophysiology SciencesDepartment of Integrated Health SciencesNagoyaJapan
| | - Yumeno Kawai
- Pathophysiology SciencesDepartment of Integrated Health SciencesNagoyaJapan
| | - Kiyoshi Aoyama
- Pathophysiology SciencesDepartment of Integrated Health SciencesNagoyaJapan
| | - Shiho Nakano
- Pathophysiology SciencesDepartment of Integrated Health SciencesNagoyaJapan
| | - Xixi Cui
- Pathophysiology SciencesDepartment of Integrated Health SciencesNagoyaJapan
| | - Misaki Hayakawa
- Pathophysiology SciencesDepartment of Integrated Health SciencesNagoyaJapan
| | - Nanako Sakabe
- Pathophysiology SciencesDepartment of Integrated Health SciencesNagoyaJapan
| | - Nozomi Furukawa
- Pathophysiology SciencesDepartment of Integrated Health SciencesNagoyaJapan
| | - Katsuhide Ikeda
- Pathophysiology SciencesDepartment of Integrated Health SciencesNagoyaJapan
| | - Toyoaki Murohara
- Department of CardiologyNagoya University Graduate School of MedicineNagoyaJapan
| | - Kohzo Nagata
- Pathophysiology SciencesDepartment of Integrated Health SciencesNagoyaJapan
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Ikeda K, Oboshi W, Hashimoto Y, Komene T, Yamaguchi Y, Sato S, Maruyama S, Furukawa N, Sakabe N, Nagata K. Characterizing the Effect of Processing Technique and Solution Type on Cytomorphology Using Liquid-Based Cytology. Acta Cytol 2021; 66:55-60. [PMID: 34644702 DOI: 10.1159/000519335] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 08/31/2021] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Liquid-based cytology (LBC) is increasingly used for nongynecologic applications. However, the cytological preparation of LBC specimens is influenced by the processing technique and the preservative used. In this study, the influence of the processing techniques and preservatives on cell morphology was examined mathematically and statistically. METHODS Cytological specimens were prepared using the ThinPrep (TP), SurePath (SP), and AutoSmear methods, with 5 different preservative solutions. The cytoplasmic and nuclear areas of Papanicolaou-stained specimens were measured for all samples. RESULTS The cytoplasmic and nuclear areas were smaller in cells prepared using the 2 LBC methods, compared to that prepared using the AutoSmear method, irrespective of the preservative used. The cytoplasmic and nuclear areas of cells prepared using the SP method were smaller than those of cells prepared using the TP method, irrespective of the preservative used. There were fewer differences among the cytoplasmic areas of cells prepared with different preservative solutions using the TP method; however, the cytoplasmic areas of cells prepared using the SP method changed with the preservative solution used. CONCLUSIONS The most significant difference affecting the cytoplasmic and nuclear areas was the processing technique. The TP method increased the cytoplasmic and nuclear areas, while the methanol-based PreservCyt solution enabled the highest enlargement of the cell. LBC is a superior preparation technique for standardization of the specimens. Our results offer a better understanding of methods suitable for specimen preparation for developing precision AI-based diagnosis in cytology.
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Affiliation(s)
- Katsuhide Ikeda
- Pathophysiology Sciences, Department of Integrated Health Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Wataru Oboshi
- Department of Medical Technology and Sciences, School of Health Sciences at Narita, International University of Health and Welfare, Narita, Japan
| | - Yusuke Hashimoto
- Department of Medical Technology and Sciences, School of Health Sciences at Narita, International University of Health and Welfare, Narita, Japan
| | - Tetsuya Komene
- Department of Medical Technology and Sciences, School of Health Sciences at Narita, International University of Health and Welfare, Narita, Japan
| | - Yoshitaka Yamaguchi
- Department of Medical Technology and Sciences, School of Health Sciences at Narita, International University of Health and Welfare, Narita, Japan
| | - Shouichi Sato
- Department of Medical Technology and Sciences, School of Health Sciences at Narita, International University of Health and Welfare, Narita, Japan
| | - Sayumi Maruyama
- Pathophysiology Sciences, Department of Integrated Health Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Nozomi Furukawa
- Pathophysiology Sciences, Department of Integrated Health Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Nanako Sakabe
- Pathophysiology Sciences, Department of Integrated Health Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kohzo Nagata
- Pathophysiology Sciences, Department of Integrated Health Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
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Komatsu Y, Aoyama K, Yoneda M, Ashikawa S, Nakano S, Kawai Y, Cui X, Furukawa N, Ikeda K, Nagata K. The prebiotic fiber inulin ameliorates cardiac, adipose tissue, and hepatic pathology, but exacerbates hypertriglyceridemia in rats with metabolic syndrome. Am J Physiol Heart Circ Physiol 2021; 320:H281-H295. [PMID: 33216624 DOI: 10.1152/ajpheart.00657.2020] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 11/18/2020] [Indexed: 01/17/2023]
Abstract
Prebiotics ameliorate dysbiosis and influence metabolism and the immune system, but their effects on cardiovascular complications in metabolic disorders remain largely unknown. We here investigated the effects of the soluble fiber inulin on cardiac, adipose tissue, and hepatic pathology as well as on metabolic disorders in DahlS.Z-Leprfa/Leprfa (DS/obese) rats, an animal model of metabolic syndrome (MetS). DS/obese rats and their homozygous lean (DahlS.Z-Lepr+/Lepr+, or DS/lean) littermate controls were fed a purified diet containing 5% or 20% inulin from 9 to 13 wk of age. The high-fiber diet ameliorated hypertension, left ventricular inflammation, fibrosis and diastolic dysfunction; attenuated adipose tissue inflammation and fibrosis; and alleviated the elevation of interleukin-6 levels, without affecting insulin resistance, in DS/obese rats. In addition, high fiber intake ameliorated lipid accumulation, inflammation, and fibrosis; attenuated the reduction in AMPK activity; upregulated sterol regulatory element-binding protein-1c gene expression; and increased the expression of microsomal triglyceride transfer protein gene in the liver of DS/obese rats. It also mitigated increases in total and non-high-density lipoprotein cholesterol levels but increased the triglyceride concentration in serum in these rats. None of these parameters were affected by high dietary fiber in DS/lean rats. The proportion of regulatory T cells in adipose tissue was influenced by dietary fiber but not by genotype. Our results indicate that inulin exacerbates hypertriglyceridemia but alleviates hypertension and cardiac injury as well as adipose tissue and hepatic pathology in MetS rats.NEW & NOTEWORTHY Prebiotics ameliorate dysbiosis and influence metabolism and the immune system, but their effects on cardiovascular complications in metabolic disorders remain largely unknown. Inulin ameliorated hypertension, cardiac injury, and diastolic dysfunction without affecting obesity or insulin resistance in a rat model of metabolic syndrome. The favorable cardiac effects of inulin may be related to inhibition of systemic inflammation associated with a reduction in circulating interleukin-6 levels. Additionally, inulin exacerbated hypertriglyceridemia but alleviates adipose tissue and hepatic pathology in these animals, as well as increased the number of regulatory T cells in adipose tissue.
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Affiliation(s)
- Yuki Komatsu
- Pathophysiology Sciences, Department of Integrated Health Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kiyoshi Aoyama
- Pathophysiology Sciences, Department of Integrated Health Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Mamoru Yoneda
- Pathophysiology Sciences, Department of Integrated Health Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Sao Ashikawa
- Pathophysiology Sciences, Department of Integrated Health Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Shiho Nakano
- Pathophysiology Sciences, Department of Integrated Health Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yumeno Kawai
- Pathophysiology Sciences, Department of Integrated Health Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Xixi Cui
- Pathophysiology Sciences, Department of Integrated Health Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Nozomi Furukawa
- Pathophysiology Sciences, Department of Integrated Health Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Katsuhide Ikeda
- Pathophysiology Sciences, Department of Integrated Health Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kohzo Nagata
- Pathophysiology Sciences, Department of Integrated Health Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
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Komatsu Y, Aoyama K, Yoneda M, Ito S, Sano Y, Kawai Y, Cui X, Yamada Y, Furukawa N, Ikeda K, Nagata K. Surgical ablation of whitened interscapular brown fat ameliorates cardiac pathology in salt-loaded metabolic syndrome rats. Ann N Y Acad Sci 2020; 1492:11-26. [PMID: 33340110 DOI: 10.1111/nyas.14546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 10/27/2020] [Accepted: 11/12/2020] [Indexed: 11/30/2022]
Abstract
Brown adipose tissue (BAT) is an endocrine organ that contributes to thermogenesis and energy consumption. We investigated the effects of salt loading and surgical removal of whitened interscapular BAT (iBAT) on cardiac and adipose tissue pathology in DahlS.Z-Leprfa /Leprfa (DS/obese) rats, an animal model of metabolic syndrome (MetS). DS/obese rats were subjected to surgical removal of iBAT or sham surgery at 8 weeks of age and were provided with drinking water containing or not containing 0.3% NaCl for 4 weeks beginning at 9 weeks of age. Removal of iBAT suppressed the salt-induced exacerbation of left ventricular inflammation, fibrosis, and diastolic dysfunction, but not that of hypertension development, in DS/obese rats. Salt loading attenuated adipocyte hypertrophy but enhanced inflammation in both visceral white adipose tissue (WAT) and iBAT. Although iBAT removal did not affect visceral WAT pathology in salt-loaded DS/obese rats, it attenuated the elevation of circulating interleukin-6 levels in these animals. Downregulation of uncoupling protein-1 expression in iBAT of DS/obese rats was not affected by salt loading. Our results suggest that the conversion of iBAT to WAT-like tissue contributes to a salt-induced elevation of circulating proinflammatory cytokine levels that leads to exacerbation of cardiac pathology in this model of MetS.
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Affiliation(s)
- Yuki Komatsu
- Pathophysiology Sciences, Department of Integrated Health Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kiyoshi Aoyama
- Pathophysiology Sciences, Department of Integrated Health Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Mamoru Yoneda
- Pathophysiology Sciences, Department of Integrated Health Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Shogo Ito
- Pathophysiology Sciences, Department of Integrated Health Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yusuke Sano
- Pathophysiology Sciences, Department of Integrated Health Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yumeno Kawai
- Pathophysiology Sciences, Department of Integrated Health Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Xixi Cui
- Pathophysiology Sciences, Department of Integrated Health Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yuichiro Yamada
- Pathophysiology Sciences, Department of Integrated Health Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Nozomi Furukawa
- Pathophysiology Sciences, Department of Integrated Health Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Katsuhide Ikeda
- Pathophysiology Sciences, Department of Integrated Health Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kohzo Nagata
- Pathophysiology Sciences, Department of Integrated Health Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
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Potratz M, Mohemed K, Friedrichs K, Rudolph V, Gilis-Januszewski T, Furukawa N, Schramm R, Bleiziffer S, Gummert J, Rudolph T. Comparison of Hemodynamic Performance of Two Current Generation Transcatheter Heart Valve Prostheses. Thorac Cardiovasc Surg 2020. [DOI: 10.1055/s-0040-1705409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Seki M, Furukawa N, Koitabashi N, Obokata M, Conway SJ, Arakawa H, Kurabayashi M. Periostin-expressing cell-specific transforming growth factor-β inhibition in pulmonary artery prevents pulmonary arterial hypertension. PLoS One 2019; 14:e0220795. [PMID: 31437169 PMCID: PMC6705784 DOI: 10.1371/journal.pone.0220795] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Accepted: 07/23/2019] [Indexed: 12/27/2022] Open
Abstract
Transforming growth factor beta (TGF-β) has been shown to play a critical role in pathogenesis of pulmonary arterial hypertension (PAH) although the precise role of TGF-β signaling remains uncertain. A recent report has shown that periostin (Pn) is one of the most upregulated proteins in human PAH lung compared with healthy lungs. We established type I TGF-β receptor knockout mice specifically with Pn expressing cell (Pn-Cre/Tgfb1fl/fl mice). Increases in PA pressure and pulmonary artery muscularization were induced by hypoxia of 10% oxygen for 4 weeks. Lung Pn expression was markedly induced by 4 week-hypoxia. Pn-Cre/Tgfb1fl/fl mice showed lower right ventricular pressure elevation, inhibition of PA medial thickening. Fluorescent co-immunostaining showed that Smad3 activation in Pn expressing cell is attenuated. These results suggest that TGF-β signaling in Pn expressing cell may have an important role in the pathogenesis of PAH by controlling medial thickening.
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Affiliation(s)
- Mitsuru Seki
- Department of Pediatrics, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
- Department of Pediatrics, Jichi Medical University, Shimotsuke, Tochigi, Japan
| | - Nozomi Furukawa
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Norimichi Koitabashi
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
- * E-mail:
| | - Masaru Obokata
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Simon J. Conway
- Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
| | - Hirokazu Arakawa
- Department of Pediatrics, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Masahiko Kurabayashi
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
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Iso T, Sunaga H, Matsui H, Kasama S, Oshima N, Haruyama H, Furukawa N, Nakajima K, Machida T, Murakami M, Yokoyama T, Kurabayashi M. Serum levels of fatty acid binding protein 4 and fat metabolic markers in relation to catecholamines following exercise. Clin Biochem 2017; 50:896-902. [PMID: 28583436 DOI: 10.1016/j.clinbiochem.2017.05.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 05/25/2017] [Accepted: 05/31/2017] [Indexed: 01/06/2023]
Abstract
BACKGROUND Lipolysis is stimulated by activation of adrenergic inputs to adipose tissues. Our recent study showed that serum concentrations of fatty acid binding protein 4 (FABP4) are robustly elevated in patients with acute myocardial infarction and ventricular tachyarrhythmia, that display a marked activation of the sympathetic nervous system (SNS). However, it remains unknown whether circulating FABP4 concentrations are associated with exercise-induced SNS activation. METHODS Thirty one healthy volunteers underwent cardiopulmonary exercise testing on a cycle ergometer up to the workload levels below and above anaerobic threshold, low- and high-intensity exercise, respectively. Serial blood samplings were performed before and after exercise. RESULTS High-intensity exercise significantly increased serum concentrations of FABP4 and catecholamines, and their concentrations declined fast thereafter in a similar fashion. These changes were accompanied by little, if any, changes in other metabolic markers. Regardless of adiposity, percent change from baseline to peak FABP4 levels (%FABP4) was comparable in all subjects. Stepwise regression analysis revealed that %FABP4 was highly correlated with that in norepinephrine. CONCLUSIONS Our study reveals the significant correlation between circulating FABP4 and norepinephrine levels during exercise testing. Together with the fact that FABP4 is secreted from adipocytes via β-adrenergic-mediated lipolytic mechanisms, this study suggests FABP4 as a potential biomarker for adrenergic overdrive.
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Affiliation(s)
- Tatsuya Iso
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan; Education and Research Support Center, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan.
| | - Hiroaki Sunaga
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan
| | - Hiroki Matsui
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan
| | - Shu Kasama
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan
| | - Naomi Oshima
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan
| | - Hikari Haruyama
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan
| | - Nozomi Furukawa
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan
| | - Kiyomi Nakajima
- Department of Clinical Laboratory Medicine, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan
| | - Tetsuo Machida
- Department of Clinical Laboratory Medicine, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan
| | - Masami Murakami
- Department of Clinical Laboratory Medicine, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan
| | - Tomoyuki Yokoyama
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan
| | - Masahiko Kurabayashi
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan
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Furukawa N, Kuss O, Emmel E, Scholtz S, Scholtz W, Becker T, Fujita B, Ensminger S, Gummert J, Börgermann J. Aortic Valve Replacement via Ministernotomy versus Transcatheter Aortic Valve Implantation in Intermediate Risk Patients: Propensity Score Analysis. Thorac Cardiovasc Surg 2017. [DOI: 10.1055/s-0037-1598752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- N. Furukawa
- Herz- und Diabeteszentrum NRW, Klinik für Thorax- und Kardiovaskularchirurgie, Bad Oeynhausen, Germany
| | - O. Kuss
- Institut für Biometrie und Epidemiologie, Deutsches Diabetes-Zentrum, Leibniz Institut für Diabetes Research, Düsseldorf, Germany
| | - E. Emmel
- Herz- und Diabeteszentrum NRW, Klinik für Thorax- und Kardiovaskularchirurgie, Bad Oeynhausen, Germany
| | - S. Scholtz
- Herz- und Diabeteszentrum NRW, Klinik für Kardiologie, Bad Oeynhausen, Germany
| | - W. Scholtz
- Herz- und Diabeteszentrum NRW, Klinik für Kardiologie, Bad Oeynhausen, Germany
| | - T. Becker
- Herz- und Diabeteszentrum NRW, Klinik für Thorax- und Kardiovaskularchirurgie, Bad Oeynhausen, Germany
| | - B. Fujita
- Herz- und Diabeteszentrum NRW, Klinik für Thorax- und Kardiovaskularchirurgie, Bad Oeynhausen, Germany
| | - S. Ensminger
- Herz- und Diabeteszentrum NRW, Klinik für Thorax- und Kardiovaskularchirurgie, Bad Oeynhausen, Germany
| | - J. Gummert
- Herz- und Diabeteszentrum NRW, Klinik für Thorax- und Kardiovaskularchirurgie, Bad Oeynhausen, Germany
| | - J. Börgermann
- Herz- und Diabeteszentrum NRW, Klinik für Thorax- und Kardiovaskularchirurgie, Bad Oeynhausen, Germany
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Itani Y, Arakawa A, Tsubamoto H, Ito K, Nishikawa R, Inoue K, Yamamoto S, Miyagi Y, Hori K, Furukawa N. Validation of the distress and impact thermometer and the changes of mood during the first 6 months of treatment in gynecological cancer patients: a Kansai Clinical Oncology Group (KCOG)-G1103 prospective study. Arch Gynecol Obstet 2016; 294:1273-1281. [PMID: 27488702 DOI: 10.1007/s00404-016-4166-y] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Accepted: 07/28/2016] [Indexed: 12/30/2022]
Abstract
PURPOSE To verify distress and impact thermometer (DIT) for screening emotional distress in gynecological cancer patients by Hospital Anxiety and Depression Scale total (HADS-T) as gold standard and to assess emotional changes by DIT and HADS-T. METHODS A prospective study was conducted in newly diagnosed gynecological cancer patients during the peri-treatment period after the cancer diagnosis followed by 6-month. We defined a HADS-T score of ≥11 as being indicative of emotional distress. RESULTS 117 patients were enrolled between May 1, 2011 and March 31, 2012, and 95 were eligible. The median age was 54 years (range 31-77). (1) From the baseline to 3-month, distress (DIT-D) ≥4 with Impact (DIT-I) ≥2 exhibited sensitivity, specificity, positive predictive value (PPV), and negative predictive values (NPV) of 0.776 [95 % confidential interval (CI) 0.688, 0.850], 0.889 (95 % CI 0.824, 0.954), 0.868 (95 % CI 0.792, 0.949), and 0.808 (95 % CI 0.731, 0.886), respectively. (2) At 6-month, DIT-D ≥2 with DIT-I ≥1 exhibited sensitivity, specificity, PPV and NPV of 0.893 (95 % CI 0.778, 1), 0.825 (95 % CI 0.707, 0.942), 0.781 (95 % CI 0.638, 0.928), and 0.917 (95 % CI 0.826, 1). (3) At 6-month, the HADS-T, DIT-D, and DIT-I scores in individual patients were significantly reduced by a mean of 4.57 (p < 0.0001), 2.34 (p < 0.0001), and 1.10 (p = 0.0031), respectively, compared with those scores of baseline (Student's paired t test), but still remained high. CONCLUSIONS (1) On acute phase within 3-month setting, DIT; DIT-D ≥4 with DIT-I ≥2, is a reliable cut-off to screen emotional distress among gynecological cancer patients. (2) The patients' moods had improved, but not completely recovered at 6-month after the diagnosis.
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Affiliation(s)
- Y Itani
- Department of Obstetrics and Gynecology, Nara Prefecture General Medical Center, Nara, Japan.
| | - A Arakawa
- Department of Obstetrics and Gynecology, Nagoya City University Graduate School of Medicine, Nagoya, Japan
| | - H Tsubamoto
- Department of Obstetrics and Gynecology, Hyogo College of Medicine, Nishinomiya, Japan
| | - K Ito
- Department of Obstetrics and Gynecology, Kansai Rosai Hospital, Amagasaki, Japan
| | - R Nishikawa
- Department of Obstetrics and Gynecology, Nagoya City University Graduate School of Medicine, Nagoya, Japan
| | - K Inoue
- Department of Obstetrics and Gynecology, Meiwa General Hospital, Amagasaki, Japan
| | - S Yamamoto
- Department of Obstetrics and Gynecology, Kansai Rosai Hospital, Amagasaki, Japan
| | - Y Miyagi
- Department of Gynecology Okayama, Ohfuku Clinic, Okayama, Japan
| | - K Hori
- Department of Obstetrics and Gynecology, Kansai Rosai Hospital, Amagasaki, Japan
| | - N Furukawa
- Department of Obstetrics and Gynecology, Nara Prefectural Seiwa Medical Center, Ikomagun-Sangocho, Japan
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Börgermann J, Emmel E, Scholtz S, Ensminger S, Furukawa N, Fujita B, Scholtz W, Becker T, Zittermann A, Horstkotte D, Kuss O, Gummert J. Conventional vs. Transapical vs. Transfemoral Aortic Valve Replacement - Real World Comparison of 3,751 Patients. Thorac Cardiovasc Surg 2016. [DOI: 10.1055/s-0036-1571505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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12
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Furukawa N, Ito F, Kawahara N, Komeda S. 415P Evaluation of palonosetron in combination with 1-day dexamethasone for chemotherapy-induced nausea and vomiting in patients receiving multiple cycles of paclitaxel and carboplatin for gynecologic malignancies. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv531.48] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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13
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Tokunaga M, Akaki M, Ito T, Miyahara S, Miyake A, Kuwahara H, Furukawa N. Magnetic control of transverse electric polarization in BiFeO3. Nat Commun 2015; 6:5878. [DOI: 10.1038/ncomms6878] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Accepted: 11/17/2014] [Indexed: 11/09/2022] Open
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14
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Furukawa N, Kuss O, Aboud A, Schonbrodt M, Renner A, Hakim Meibodi K, Becker T, Zittermann A, Gummert JF, Borgermann J. Ministernotomy versus conventional sternotomy for aortic valve replacement: matched propensity score analysis of 808 patients. Eur J Cardiothorac Surg 2014; 46:221-6; discussion 226-7. [DOI: 10.1093/ejcts/ezt616] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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15
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Kawaguchi R, Furukawa N, Kimura M, Kanno M. Long-Term Survival Following of Neoadjuvant Intraarterial Chemotherapy for Stage IIIB Cervical Cancer. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt459.31] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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16
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Furukawa N, Aboud A, Schonbrodt M, Renner A, Hakim K, Becker T, Zittermann A, Oliver K, Gummert JF, Borgermann J. 316 * MINISTERNOTOMY VERSUS CONVENTIONAL STERNOTOMY FOR AORTIC VALVE REPLACEMENT: PROPENSITY SCORE ANALYSIS OF 808 PATIENTS. Interact Cardiovasc Thorac Surg 2013. [DOI: 10.1093/icvts/ivt372.316] [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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17
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Börgermann J, Furukawa N, Aboud A, Schönbrodt M, Renner A, Hakim-Meibodi K, Becker T, Zittermann A, Kuss O, Gummert JF. Ministernotomy versus conventional sternotomy for aortic valve replacement: Propensity score analysis of 808 patients. Thorac Cardiovasc Surg 2013. [DOI: 10.1055/s-0032-1332320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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18
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Komeda S, Furukawa N, Kasai T, Washida A, Kobayashi H. Uterine metastasis of lobular breast cancer during adjuvant letrozole therapy. J OBSTET GYNAECOL 2012; 33:99-101. [DOI: 10.3109/01443615.2012.721407] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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19
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Kawaguchi R, Tanase Y, Haruta S, Nagai A, Yoshida S, Furukawa N, Ooi H, Kobayashi K. Paclitaxel plus Carboplatin Chemotherapy for Primary Peritoneal Carcinoma: A Study of 22 Cases and Comparison with Stage III-IV Ovarian Serous Carcinoma. Case Rep Oncol 2012; 5:173-80. [PMID: 22666209 PMCID: PMC3364097 DOI: 10.1159/000338402] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
The aim of this study was to assess the clinical characteristics and outcome of patients with either primary peritoneal carcinoma (PPC) or ovarian serous carcinoma (OSC) treated with paclitaxel plus carboplatin chemotherapy. We retrospectively identified 22 PPC patients and 55 stage III–IV OSC patients treated between 2002 and 2007. After exploratory laparotomy, all patients received paclitaxel and carboplatin every 3 weeks, with the goal of optimal cytoreduction. There were no statistically significant differences between the PPC and OSC groups with regard to tumor stage, residual tumor after debulking surgery (initial or interval), serum cancer antigen (CA) 125 levels at diagnosis, and completion of first-line chemotherapy. The progression-free survival (PFS) durations were 12.7 months (95% CI, 6.3–18.5) in the patients with PPC and 15.9 months (95% CI, 13.3–18.5) in those with OSC (p = 0.016). However, the median survival durations were 26.5 months (95% CI, 14.6–38.3) in the patients with PPC and 38 months (95% CI, 23.8–53.8) in those with OSC (p = 0.188). Survival was longer for all patients whose CA125 levels normalized to 26 U/ml during and after treatment. Overall survival (OS) of the patients with PPC was similar to that of the patients with OSC, suggesting that management for advanced-stage OSC would be similar to that for PPC. The combination of optimal debulking with paclitaxel plus carboplatin chemotherapy may offer patients the most effective treatment. The CA125 nadir after cytoreductive surgery can be considered a prognostic factor for OS and PFS in patients with PPC.
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Affiliation(s)
- R Kawaguchi
- Department of Obstetrics and Gynecology, Nara Medical University, Kashihara, Japan
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20
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Abstract
Chemotherapy-induced nausea and vomiting (CINV) and nephrotoxicity are adverse events induced by cisplatin administration. These effects can be reduced by treatment regimens with low-dose cisplatin, but high-dose cisplatin is still used. In Japan, high-dose cisplatin is usually administered in an inpatient setting to permit management of CINV. However, with use of new-generation antiemetic agents such as aprepitant, CINV and nephrotoxicity are controllable in an outpatient setting. Here, we discuss issues related to the management of high-dose cisplatin administration in outpatients. Grade 2 or worse CINV induced by high-dose cisplatin occurs in more than 40% of patients without treatment with aprepitant, but is controllable by administration of a 5-HT3 receptor antagonist, steroids and aprepitant. Moreover, prevention of CINV using these drugs is cost-effective, since outpatient settings have advantages with regard to health economics and patient quality of life. These findings suggest that shifting high-dose cisplatin administration to the outpatient setting may be achieved with co-administration of aprepitant. Available facilities and the status of the patient should be considered when selecting whether an outpatient setting is suitable for administration of cisplatin, but the use of aprepitant and adequate oral hydration should allow use of cisplatin in this setting.
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Affiliation(s)
- N Furukawa
- Department of Obstetrics and Gynecology, Nara Medical University, Kashihara, Nara, Japan.
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21
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Kawaguchi R, Furukawa N, Kobayashi H. A study of prognostic factors in patients with locally advanced cervical cancer treated with radiotherapy: Establishing post-treatment cut-off levels for tumor marker squamous cell carcinoma antigen. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e15571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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22
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Takekuma M, Hirashima Y, Ito K, Tsubamoto H, Tabata T, Arakawa A, Itani Y, Furukawa N, Murakoshi H, Takeuchi S. Phase II trial of paclitaxel and nedaplatin in patients with advanced/recurrent uterine cervical cancer: A Kansai Clinical Oncology Group study. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.5102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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23
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Furukawa N, Shigetomi H, Yoshida S, Kawaguchi R, Komeda S, Tanase Y, Yamada Y, Kobayashi H. CA125 as a predictive marker for optimal interval debulking surgery in advanced ovarian cancer. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e15543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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24
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Abstract
Isolated tricuspid regurgitation with rupture of the chordae tendinae caused by blunt trauma is uncommon. We present a 20-year-old man who was asymptomatic for four months after a traffic accident, but then developed severe tricuspid regurgitation, caused by rupture of the chordae tendinae. We performed minimally invasive tricuspid valve repair with chordal reconstruction and annuloplasty. We discuss the optimal treatment of traumatic valve insufficiency in a young patient and review the literature.
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Affiliation(s)
- N Furukawa
- Department of Cardiothoracic Surgery, Heart and Diabetes Center North Rhine-Westphalia, Bad Oeynhausen, Germany.
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25
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Tanase Y, Morioka S, Niiro E, Onogi A, Shigetomi H, Kawaguchi R, Yoshida S, Furukawa N, Yamada Y, Oi H, Kobayashi H. Atypical Endometriosis of the Ovary: A Description of 2 Cases Treated with Laparoscopic Surgery and Review of the Literature. J Minim Invasive Gynecol 2010. [DOI: 10.1016/j.jmig.2010.08.490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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26
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Murakawa H, Onose Y, Miyahara S, Furukawa N, Tokura Y. Ferroelectricity induced by spin-dependent metal-ligand hybridization in Ba₂CoGe₂O₇. Phys Rev Lett 2010; 105:137202. [PMID: 21230803 DOI: 10.1103/physrevlett.105.137202] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2010] [Indexed: 05/30/2023]
Abstract
We have investigated the variation of induced ferroelectric polarization under a magnetic field with various directions and magnitudes in a staggered antiferromagnet Ba₂CoGe₂O₇. While the ferroelectric polarization cannot be explained by the well-accepted spin current model nor the exchange striction mechanism, we have shown that it is induced by the spin-dependent p-d hybridization between the transition metal (Co) and ligand (O) via the spin-orbit interaction. On the basis of the correspondence between the direction of electric polarization and the magnetic state, we have also demonstrated the electrical control of the magnetization direction.
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Affiliation(s)
- H Murakawa
- Multiferroics Project, ERATO, Japan Science and Technology Agency (JST), c/o Department of Applied Physics, University of Tokyo, Tokyo, Japan
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27
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Koshibae W, Furukawa N, Nagaosa N. Real-time quantum dynamics of interacting electrons: self-organized nanoscale structure in a spin-electron coupled system. Phys Rev Lett 2009; 103:266402. [PMID: 20366326 DOI: 10.1103/physrevlett.103.266402] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2009] [Indexed: 05/29/2023]
Abstract
We investigate the quantum evolution of the excited electronic states combined with the classical dynamics of the order parameter field in a spin-electron coupled system. It is found that the nanoscale spatial structure of the spins evolves spontaneously accompanied by the localization of the electronic wave functions, and the nonadiabatic quantum transitions through a resonant mutual precession analogous to the electron spin resonance (ESR) process.
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Affiliation(s)
- W Koshibae
- Cross-Correlated Materials Research Group, RIKEN, Saitama 351-0198, Japan
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28
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Tanase Y, Komeda S, Onogi A, Kanayama S, Yoshida S, Furukawa N, Yamada Y, Oi H, Kobayashi H. A Rare Case of Huge Ovarian Teratoma Mimicking Omental Cyst Treated with Laparoscopic Surgery. J Minim Invasive Gynecol 2009. [DOI: 10.1016/j.jmig.2009.08.311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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29
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Tokunaga M, Yamasaki Y, Onose Y, Mochizuki M, Furukawa N, Tokura Y. Novel multiferroic state of Eu1-xYxMnO3 in high magnetic fields. Phys Rev Lett 2009; 103:187202. [PMID: 19905827 DOI: 10.1103/physrevlett.103.187202] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2008] [Indexed: 05/28/2023]
Abstract
Magnetic and dielectric properties of Eu1-xYxMnO3 (x=0 and 0.4) are studied in pulsed magnetic fields up to 55 T. For x=0, application of magnetic fields higher than 20 T along the b axis causes magnetic transitions accompanied by generation of electric polarization (P) along the a axis. Similar first-order transitions are also observed in crystals of x=0.4, in which the ground state at zero magnetic field is already a ferroelectric P parallel a phase of different origin. Realistic model calculation indicates the presence of a novel multiferroic state induced by the spin exchange striction mechanism in high magnetic fields as an essential nature of the frustrated Mn spin system in this class of manganites.
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Affiliation(s)
- M Tokunaga
- The Institute for Solid State Physics (ISSP), The University of Tokyo, Chiba 277-8581, Japan.
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30
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Kagawa F, Mochizuki M, Onose Y, Murakawa H, Kaneko Y, Furukawa N, Tokura Y. Dynamics of multiferroic domain wall in spin-cycloidal ferroelectric DyMnO3. Phys Rev Lett 2009; 102:057604. [PMID: 19257556 DOI: 10.1103/physrevlett.102.057604] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2008] [Indexed: 05/27/2023]
Abstract
We report the dielectric dispersion of the giant magnetocapacitance (GMC) in multiferroic DyMnO3 over a wide frequency range. The GMC is found to be attributable not to the softened electromagnon but to the electric-field-driven motion of multiferroic domain wall (DW). In contrast to conventional ferroelectric DWs, the present multiferroic DW motion holds an extremely high relaxation rate of approximately 10;{7} s;{-1} even at low temperatures. This mobile nature as well as the model simulation suggests that the multiferroic DW is not atomically thin as in ferroelectrics but thick, reflecting its magnetic origin.
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Affiliation(s)
- F Kagawa
- Multiferroics Project, ERATO, Japan Science and Technology Agency (JST), c/o Department of Applied Physics, University of Tokyo, Tokyo 113-8656, Japan
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31
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Takahashi Y, Kida N, Yamasaki Y, Fujioka J, Arima T, Shimano R, Miyahara S, Mochizuki M, Furukawa N, Tokura Y. Evidence for an electric-dipole active continuum band of spin excitations in multiferroic TbMnO3. Phys Rev Lett 2008; 101:187201. [PMID: 18999857 DOI: 10.1103/physrevlett.101.187201] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2008] [Revised: 08/05/2008] [Indexed: 05/27/2023]
Abstract
The wide range optical spectra on a multiferroic prototype TbMnO3 have been investigated to clarify the origin of spin excitations observed in the far-infrared region. We elucidate the full band structure, whose high energy edge (133 cm;{-1}) exactly corresponds to twice of the highest-lying magnon energy. Thus the origin of this absorption band is clearly assigned to two-magnon excitation driven by the electric field of light. There is an overlap between the two-magnon and phonon energy ranges, where the strong coupling between them is manifested by the frequency shift and transfer of oscillator strength of the phonon mode.
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Affiliation(s)
- Y Takahashi
- Multiferroics Project, ERATO, Japan Science and Technology Agency (JST), Japan c/o Department of Applied Physics, The University of Tokyo, Tokyo 113-8656, Japan
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32
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Hata M, Hayasaka M, Sezai A, Niino T, Yoda M, Unosawa S, Taoka M, Osaka S, Furukawa N, Kimura H, Minami K. Proton Pump Inhibitors May Increase the Risk of Delayed Bleeding Complications after Open Heart Surgery if Used Concomitantly with Warfarin. Thorac Cardiovasc Surg 2008; 56:274-7. [DOI: 10.1055/s-2008-1038378] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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33
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Hata M, Sezai A, Niino T, Yoda M, Unosawa S, Taoka M, Osaka S, Furukawa N, Minami K. Optimal treatment strategy and prognosis for the patients with type B acute aortic dissection. Thorac Cardiovasc Surg 2008. [DOI: 10.1055/s-2008-1038047] [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: 10/21/2022]
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34
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Furukawa N, Hata M, Sezai A, Niino T, Yoda M, Minami K. Validation of the EuroSCORE in Japan. Thorac Cardiovasc Surg 2008. [DOI: 10.1055/s-2008-1037865] [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: 10/21/2022]
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35
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Horibe Y, Shingu M, Kurushima K, Ishibashi H, Ikeda N, Kato K, Motome Y, Furukawa N, Mori S, Katsufuji T. Spontaneous formation of vanadium "molecules" in a geometrically frustrated crystal: AlV2O4. Phys Rev Lett 2006; 96:086406. [PMID: 16606207 DOI: 10.1103/physrevlett.96.086406] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2005] [Indexed: 05/08/2023]
Abstract
We investigated the charge-ordered (CO) state in spinel AlV2O4 by electron diffraction, synchrotron x-ray diffraction, and magnetic measurements. It was found that the CO structure appearing below 700 K is characterized by the formation of V clusters (heptamers), each of which is consisting of 7 vanadium atoms and is in a spin-singlet state as a total. Theoretical consideration indicates that this unique molecularlike V heptamer is stabilized by a strong bonding of vanadium t(2g) orbitals.
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Affiliation(s)
- Y Horibe
- Department of Physics, Osaka Prefecture University, Osaka 599-8531, Japan
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37
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Ohta T, Sasase T, Miyajima K, Matsui K, Matsushita M, Furukawa N, Yonemori F. Daily inhibition of postprandial hyperglycaemia with JTT-608, a novel oral antidiabetic agent, ameliorates pancreatic function in neonatally streptozotocin-treated rats. Diabetes Obes Metab 2005; 7:517-24. [PMID: 16050944 DOI: 10.1111/j.1463-1326.2004.00419.x] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
AIM Chronic glycaemic control, in particular, the control of postprandial hyperglycaemia, is essential for preventing the development of diabetic complications. We therefore evaluated the chronic treatment effect of a new antidiabetic agent, JTT-608 [trans-4-(methylcyclohexyl)-4-oxobutyric acid], in neonatally streptozotocin-treated rats. METHODS The rats were maintained with liquid meal three times a day and treated orally with JTT-608 10 min before each meal for 12 weeks. Haemoglobin A1C (HbA1C) and fasting blood glucose levels were measured at 4-week intervals, and effects of JTT-608 on pancreatic function and diabetic complications were examined after dosing period. RESULTS The postprandial hyperglycaemia was suppressed by JTT-608 administration, and both HbA1C levels and fasting blood glucose levels were reduced during the experimental period. After the treatment period of 12 weeks, JTT-608 further improved the early insulin secretion and the impaired glucose tolerance after meal loading in the diabetic rats. Also, pathological examination revealed that JTT-608 reduced the incidence of the decrease in immunoreactivity of insulin. In examination of other diabetic complications, JTT-608 ameliorated the reduced motor nerve conduction velocities observed in diabetic rats and inhibited the incidence of cataracts with diabetes. CONCLUSIONS We conclude that a newly developed antidiabetic agent, JTT-608, improves the pancreatic function and prevents the development of diabetic complications by inhibition of daily postprandial hyperglycaemia and could be useful for the treatment of diabetic subjects with impaired insulin secretion.
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Affiliation(s)
- T Ohta
- Japan Tobacco, Central Pharmaceutical Research Institute, 1-1, Murasaki-cho, Takatsuki, Osaka, Japan.
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38
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Sueki H, Furukawa N, Higo N, Akiyama M, Batchelor J, Iijima M. Association of verrucous skin lesions and skin ulcers on the feet in patients with diabetic neuropathy. Clin Exp Dermatol 2004; 29:247-53. [PMID: 15115503 DOI: 10.1111/j.1365-2230.2004.01479.x] [Citation(s) in RCA: 11] [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: 11/27/2022]
Abstract
We report the simultaneous or chronological association of verrucous skin lesions and diabetic ulcers on the feet of three diabetic patients. All three patients had poor diabetic control and were suffering from complications such as neuropathy, retinopathy and nephropathy at the time of presentation. In patient 1, verrucous skin lesions on the feet in diabetic neuropathy (VSLDN) and a diabetic skin ulcer developed simultaneously. In patient 2, VSLDN preceded the development of diabetic ulcers, while in patient 3, diabetic ulcers preceded VSLDN. These associations suggest that VSLDN and diabetic ulcers are closely related in their aetiology and pathogenesis. Strategies for the treatment and prevention of VSLDN should include multiple treatment modalities combined with foot care as proposed by the international working group on the diabetic foot.
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Affiliation(s)
- H Sueki
- Department of Dermatology, Showa University School of Medicine, Tokyo, Japan.
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Abstract
We previously reported that intra-4th-ventricular (i.4th.v.) administration of a non-NMDA receptor antagonist, NBQX, abolished vagally induced retching. This study was undertaken to ascertain whether or not the neuronal response in the solitary tract nucleus (NTS) to vagal stimulation and the vago-vagal gastric reflexes induced by non-emetic stimulation are also abolished by NBQX with a similar latency as in the case of retching. Ketamine and thiopental- or chloralose-anesthetized dogs were decerebrated, and the dorsal surface of the medulla was exposed. This study consisted of two series of experiments. In the first series, extracellular neuronal responses in the NTS to pulse-train vagal stimulation were recorded. Effects of NBQX on the neural response and vagally induced fictive retching were observed. In the second series, effects of glutamate receptor antagonists on gastric corpus responses to esophageal or gastric antral distension were observed. Retching was abolished 5-15 min after an i.4th.v. application of NBQX. and the neuronal responses disappeared within 14 min after application in nine of 10 NTS neurons. On the other hand, corpus contractility was inhibited by esophageal distension, and inhibited and/or enhanced by antral distension. While the inhibitory responses disappeared within 17 min after NBQX, the enhanced response remained even after NBQX and vagotomy, but was abolished by i.v. administration of hexamethonium. These results suggest that adaptive relaxation in the corpus, as well as retching, may be mediated by glutaminergic vagal afferents and non-NMDA receptors in the NTS.
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Affiliation(s)
- N Furukawa
- Department of Physiology, Kawasaki Medical School, Kurashiki, Japan.
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Kobayashi K, Tanaka K, Izawa H, Arai Y, Furukawa N. Syntheses and properties of ditelluroxanes and oligochalcogenoxanes: hypervalent oligomers with Te-O apical linkages in the main chain. Chemistry 2001; 7:4272-9. [PMID: 11686608 DOI: 10.1002/1521-3765(20011001)7:19<4272::aid-chem4272>3.0.co;2-u] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The reaction of ditelluroxanes [Ar2Te-O-TeAr]2+[X]2- (2) (Ar = p-tolyl) with a telluroxide 1, a selenoxide 7, or a carboxylate 10 to produce oligochalcogenoxanes with hypervalent Te-O apical linkages in their main chain is described. The 125Te NMR chemical shifts of 2 (2a: X- = CF3SO3-, 2b: X- = CF3CO2-, 2c: X- = CH3CO2-, 2d: X- = Cl-) are shifted downfield with decreasing nucleophilicity of the counteranions. This result reflects both the cationic character and the reactivity of the Te atoms of 2. The reaction of 2a with one, two, three, or four equivalents of telluroxide 1a (Ar = p-tolyl) selectively gave a tritelluroxane 3a, tetratelluroxane 4a, pentatelluroxane 5a, and hexatelluroxane 6a, respectively. In contrast, the reaction of 2b with an excess of 1a produced only tritelluroxane 3b. An equilibrium between the oligotelluroxanes was confirmed by crossover experiments of the reactions of 2a with 4a and of 2a with 1b (Ar = Ph). The selective equilibrium formation of a selenoxaditelluroxane 8 or a bis(selenoxa)ditelluroxane 9 was achieved by the reaction of 2a with one or two equivalents of selenoxide 7, respectively. The association constant of 2a with 7 to form 8 was estimated to be Ka = (2.18+/-0.12) x 10(4) M(-1) in CD3CN at -40 degrees C. The reaction of 2a with two equivalents of carboxylates 10a-d gave a mixture of bis(carboxylate)ditelluroxanes and diaryldicarboxytelluranes 12b-d, respectively, in which the product ratio of these depended upon the electron-withdrawing ability of 10. The reaction of 3a with two equivalents of 10a-d afforded 11a-d in all cases. The present results suggest that the sigma*-n orbital interaction plays an essential role in the reactivity of ditelluroxanes and in the formation of self-assembled oligochalcogenoxanes, and that a hypervalent bond via a sigma*-n orbital interaction is viable as a new supramolecular synthon for molecular assembly.
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Affiliation(s)
- K Kobayashi
- Department of Chemistry, University of Tsukuba, Ibaraki, Japan.
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41
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Kobayashi K, Koyama E, Kono C, Namatame K, Nakamura K, Furukawa N. Evidence for intermolecular interaction between sulfonium and sulfide sulfur atoms and its application to synthesis of cyclic bis(disulfide) dimer. J Org Chem 2001; 66:2085-90. [PMID: 11300905 DOI: 10.1021/jo001645k] [Citation(s) in RCA: 9] [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: 11/30/2022]
Abstract
On the basis of the remote Pummerer reaction of p-bis(alkylthio)-aromatic S-oxides, the intermolecular interaction between the sulfonium and sulfide sulfur atoms is described. (1) In marked contrast to the Pummerer reaction of 1b-d(3) with (CF(3)CO)(2)O (J. Org. Chem. 1999, 64, 3190-3195), the reaction of 3,3',5,5'-tetramesityl-4-(trideuteriomethylsulfinyl)-4'-(methylthio)biphenyl (1a-d(3)) as a sterically hindered analogue of 1b gave only 2a-d(2). (2) Both reactions of the two unsymmetrical regioisomers of 1-(ethylthio)-4-(methylthio)benzene S-oxide (5a and 5b) with (CF(3)CO)(2)O afforded a mixture of the mono-Pummerer products 6a and 6b, the bis-Pummerer product 7, and the bis-sulfide 8 in a similar ratio. The quenching at the initial stage of both reactions produced 5a, 5b, 8, and the bis-sulfoxide 10 in a similar ratio. These results indicate the equilibrium in the intermolecular interaction between the sulfur atoms. (3) The reaction of the p-bis(benzylthio)-aromatic S-oxide 16 with (CF(3)SO(2))(2)O gave the cyclic bis(disulfide) dimer 17 for the diphenyl sulfide and diphenylmethane spacers or the cyclic tetrakis(disulfide) tetramer 19 for the benzene and biphenyl spacers via the debenzylation of an intermolecular dithia dication. The cyclic bis(dithia dication) dimer A resulting from the intermolecular interaction between the sulfonium and sulfide sulfur atoms is proposed as an intermediate throughout the present reactions.
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Affiliation(s)
- K Kobayashi
- Department of Chemistry, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan.
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42
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Arai N, Furukawa N, Miyamae T, Goshima Y, Sasaki Y, Ohshima E, Suzuki F, Fujita K, Misu Y. DOPA cyclohexyl ester, a competitive DOPA antagonist, protects glutamate release and resultant delayed neuron death by transient ischemia in hippocampus CA1 of conscious rats. Neurosci Lett 2001; 299:213-6. [PMID: 11165773 DOI: 10.1016/s0304-3940(01)01520-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
In rat striata, DOPA released is a causal factor for glutamate release and resultant delayed neuron death by four-vessel occlusion. Nanomolar DOPA cyclohexyl ester (CHE), a potent and relatively stable competitive DOPA antagonist, protects these events. We tried to clarify whether DOPA CHE protects these events in hippocampal CA1 pyramidal cell layers most vulnerable against ischemia. Five to 10 min ischemia caused slight to mild glutamate release in 10 min samples during microdialysis and mild to severe neuron death 96 h after reperfusion. DOPA and dopamine were under assay limit in this design, but were basally detected by 20 min sampling and released by 20 min ischemia. In 10 min samples, intrahippocampal perfusion of 100 nM DOPA CHE 10 min before ischemia for 70 min did not inhibit glutamate release by 10 min ischemia, while it abolished glutamate release and protected delayed neuron death by 5 min ischemia. DOPA CHE is neuroprotective under a mild ischemic condition in rat hippocampus CA1.
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Affiliation(s)
- N Arai
- Department of Clinical Neuropathology, Tokyo Metropolitan Institute of Neuroscience, 183-8526, Tokyo, Japan
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43
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Furukawa N, Arai N, Goshima Y, Miyamae T, Ohshima E, Suzuki F, Fujita K, Misu Y. Endogenously released DOPA is a causal factor for glutamate release and resultant delayed neuronal cell death by transient ischemia in rat striata. J Neurochem 2001; 76:815-24. [PMID: 11158253 DOI: 10.1046/j.1471-4159.2001.00068.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [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: 11/20/2022]
Abstract
Glutamate is implicated in neuronal cell death. Exogenously applied DOPA by itself releases neuronal glutamate and causes neuronal cell death in in vitro striatal systems. Herein, we attempt to clarify whether endogenous DOPA is released by 10 min transient ischemia due to four-vessel occlusion during rat striatal microdialysis and, further, whether DOPA, when released, functions to cause glutamate release and resultant delayed neuronal cell death. Ischemia increased extracellular DOPA, dopamine, and glutamate, and elicited neuronal cell death 96 h after ischemic insult. Inhibition of striatal L-aromatic amino acid decarboxylase 10 min before ischemia increased markedly basal DOPA, tripled glutamate release with a tendency of decrease in dopamine release by ischemia, and exaggerated neuronal cell death. Intrastriatal perfusion of 10-30 nM DOPA cyclohexyl ester, a competitive DOPA antagonist, 10 min before ischemia, concentration-dependently decreased glutamate release without modification of dopamine release by ischemia. At 100 nM, the antagonist elicited a slight ceiling effect on decreases in glutamate release by ischemia and protected neurons from cell death. Glutamate was released concentration-dependently by intrastriatal perfusion of 0.3-1 mM DOPA and stereoselectively by 0.6 mM DOPA. The antagonist elicited no hypothermia during and after ischemia. Endogenously released DOPA is an upstream causal factor for glutamate release and resultant delayed neuronal cell death by brain ischemia in rat striata. DOPA antagonist has a neuroprotective action.
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Affiliation(s)
- N Furukawa
- Department of Pharmacology, Yokohama City University School of Medicine, Yokohama, Japan
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Yoshizato K, Shirotani T, Furukawa N, Taguchi T, Motoshima H, Toyonaga T, Hirashima Y, Kawashima J, Ebina Y, Shichiri M, Araki E. Identification of a cis-acting element and a novel trans-acting factor of the human insulin receptor gene in HepG2 and rat liver cells. Biochem Biophys Res Commun 2001; 280:428-34. [PMID: 11162534 DOI: 10.1006/bbrc.2000.4140] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The liver is a major target organ of insulin and is important for glucose homeostasis. We analyzed the tissue specific regulation of the insulin receptor gene in the liver by studying the cis-acting element and trans-acting factor of the human insulin receptor gene in human hepatoma cell line, HepG2 cells. In the chloramphenicol acetyl transferase (CAT) assay with chimeric plasmids containing various deletions and insertions of the human insulin receptor promoter/CAT gene, a HepG2 cell specific cis-acting element was identified between nt -592 to -577 of the promoter. In electrophoretic mobility shift assay and UV cross-link analysis, a 35-kDa nuclear protein that bound to 5'-TCCCTCCC-3' (nt -588 to -581) sequence was identified in HepG2 cells as well as in rat hepatocytes. This nuclear protein, designated as hepatocyte-specific transcription factor of the insulin receptor gene (HTFIR), might play an important role in tissue-specific expression of the insulin receptor gene in the liver.
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Affiliation(s)
- K Yoshizato
- Department of Metabolic Medicine, Kumamoto University School of Medicine, Kumamoto, Japan
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Adachi S, Itani Y, Ito K, Noda T, Shintani M, Saito K, Furukawa N, Tomii Y. Prognostic results of cisplatin IP and carboplatin IV with G-CSF in patients with ovarian cancer. Oncol Rep 2001. [DOI: 10.3892/or.8.1.27] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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46
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Adachi S, Itani Y, Ito K, Noda T, Shintani M, Saito K, Furukawa N, Tomii Y. Prognostic results of cisplatin IP and carboplatin IV with G-CSF in patients with ovarian cancer. Oncol Rep 2001; 8:27-31. [PMID: 11115564] [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: 02/18/2023] Open
Abstract
We performed a dose-escalation study of carboplatin combined with a fixed dose of intraperitoneal cisplatin and G-CSF in patients with epithelial ovarian cancer, and analyzed the progression-free and overall survival. Six of the patients who entered the study with stage IC and II disease are still alive with no evidence of disease. The five-year survival rate was 61% for the 18 patients with stage III and IV disease; progression-free survival over 5 years was 32%. Our results show this to be an effective treatment regimen for epithelial ovarian cancer. Prognosis is good with this combined carboplatin/cisplatin/G-CSF therapy, especially for those patients with microscopic or no residual disease.
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MESH Headings
- Adenocarcinoma/drug therapy
- Adenocarcinoma/pathology
- Adenocarcinoma, Clear Cell/drug therapy
- Adenocarcinoma, Clear Cell/mortality
- Adenocarcinoma, Clear Cell/pathology
- Adult
- Aged
- Antineoplastic Combined Chemotherapy Protocols/adverse effects
- Antineoplastic Combined Chemotherapy Protocols/therapeutic use
- Carboplatin/administration & dosage
- Carboplatin/adverse effects
- Carcinoma, Endometrioid/drug therapy
- Carcinoma, Endometrioid/mortality
- Carcinoma, Endometrioid/pathology
- Child, Preschool
- Cisplatin/administration & dosage
- Cisplatin/adverse effects
- Cystadenocarcinoma, Mucinous/drug therapy
- Cystadenocarcinoma, Mucinous/mortality
- Cystadenocarcinoma, Mucinous/pathology
- Cystadenocarcinoma, Serous/drug therapy
- Cystadenocarcinoma, Serous/mortality
- Cystadenocarcinoma, Serous/pathology
- Disease-Free Survival
- Drug Administration Schedule
- Female
- Follow-Up Studies
- Granulocyte Colony-Stimulating Factor/therapeutic use
- Hematologic Diseases/chemically induced
- Hematologic Diseases/drug therapy
- Hematologic Diseases/prevention & control
- Humans
- Infusions, Intravenous
- Injections, Intraperitoneal
- Japan/epidemiology
- Life Tables
- Middle Aged
- Ovarian Neoplasms/drug therapy
- Ovarian Neoplasms/mortality
- Ovarian Neoplasms/pathology
- Prognosis
- Survival Analysis
- Treatment Outcome
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Affiliation(s)
- S Adachi
- Department of Obstetrics and Gynecology, Hyogo College of Medicine, Hyogo 663, Japan.
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Kaneko K, Sakai M, Matsumura T, Biwa T, Furukawa N, Shirotani T, Kiritoshi S, Anami Y, Matsuda K, Sasahara T, Shichiri M. Group-II phospholipase A(2) enhances oxidized low density lipoprotein-induced macrophage growth through enhancement of GM-CSF release. Atherosclerosis 2000; 153:37-46. [PMID: 11058698 DOI: 10.1016/s0021-9150(00)00391-9] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Inflammatory process plays an important role in the development and progression of atherosclerotic lesions. Recently, group-II phospholipase A(2) (PLA(2)), an inflammatory mediator, was reported to exist in human atherosclerotic lesions and to enhance the development of murine atherosclerotic lesions. Oxidized low density lipoprotein (Ox-LDL) stimulates the growth of several types of macrophages in vitro. Since proliferation of macrophages occurs in atherosclerotic lesions, it is possible to assume that the Ox-LDL-induced macrophage proliferation might be involved in the progression of atherosclerosis. In this study, the role of group-II PLA(2) in the Ox-LDL-induced macrophage growth was investigated using thioglycollate-elicited mouse peritoneal macrophages. Thioglycollate-elicited macrophages significantly expressed group-II PLA(2) and released it into the culture medium. The Ox-LDL-induced thymidine incorporation into thioglycollate-elicited macrophages was three times higher than that into resident macrophages, whereas under the same conditions, granulocyte/macrophage colony-stimulating factor (GM-CSF) equally induced thymidine incorporation into both types of macrophages. Moreover, the Ox-LDL-induced GM-CSF release from thioglycollate-elicited macrophages was significantly higher than that from resident macrophages. In addition, the Ox-LDL-induced thymidine incorporation into macrophages obtained from human group-II PLA(2) transgenic mice and the GM-CSF release from these cells were significantly higher than those from their negative littermates, and the Ox-LDL-induced thymidine incorporation into human group-II PLA(2) transgenic macrophages was significantly inhibited by a polyclonal anti-human group-II PLA(2) antibody. These results suggest that the expression of group-II PLA(2) in thioglycollate-elicited macrophages may play an enhancing role in the Ox-LDL-induced macrophage growth through the enhancement of the GM-CSF release.
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Affiliation(s)
- K Kaneko
- Department of Metabolic Medicine, Kumamoto University School of Medicine, 1-1-1 Honjo, 860-8556, Kumamoto, Japan
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Akimoto T, Moritomo Y, Nakamura A, Furukawa N. Observation of anomalous single-magnon scattering in half-metallic ferromagnets by chemical pressure control. Phys Rev Lett 2000; 85:3914-3917. [PMID: 11041959 DOI: 10.1103/physrevlett.85.3914] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2000] [Indexed: 05/23/2023]
Abstract
The temperature variation of the resistivity rho and specific heat C have been measured for prototypical half-metallic ferromagnets, R0. 6Sr 0.4MnO3, by controlling the one-electron bandwidth W. We have found variations in the temperature scalings of rho from approximately T2 ( R = La, and Nd) to approximately T3 ( R = Sm), and have interpreted the T3 law in terms of the anomalous single-magnon scattering process in the half-metallic system.
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Affiliation(s)
- T Akimoto
- Department of Crystalline Materials Science, Nagoya University, Nagoya 464-8603, Japan
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Horn E, Zhang SZ, Furukawa N. Crystal structure of S,S’-4,4’-diphenyl ether 2,5-bis(trimethylsilyl)thiophenium bis(triflate), C32H48OS2Si4(CF3SO3)2. Z KRIST-NEW CRYST ST 2000. [DOI: 10.1515/ncrs-2000-0443] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- E. Horn
- 1University of Tsukuba, Tsukuba Advanced Research Alliance Center and Department of Chemistry, Tsukuba, Ibaraki 305-8577, Japan/ Rikkyo University, Department of Chemistry, 3-34-1 Nishi-Ikebukuro, Tosima-ku, Tokyo 171-8501, Japan
| | - S.-Z. Zhang
- 2University of Tsukuba, Tsukuba Advanced Research Alliance Center and Department of Chemistry, Tsukuba, Ibaraki 305-8577, Japan
| | - N. Furukawa
- 2University of Tsukuba, Tsukuba Advanced Research Alliance Center and Department of Chemistry, Tsukuba, Ibaraki 305-8577, Japan
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50
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Horn E, Zhang SZ, Nakahodo T, Sato S, Furukawa N. Crystal structure of S-[4-(2,6-dimethylphenylselenide)-3,5-dimethylphenyl]-dibenzothiophenium bis(triflate) hydrate, [C20H16SSe0.5]2 · (CF3O3S)2 · 2.78H2O. Z KRIST-NEW CRYST ST 2000. [DOI: 10.1515/ncrs-2000-0442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- E. Horn
- 1University of Tsukuba, Tsukuba Advanced Research Alliance Center and Department of Chemistry, Tsukuba, Ibaraki 305-8577, Japan/ Rikkyo University, Department of Chemistry, 3-34-1 Nishi-Ikebukuro, Tosima-ku, Tokyo 171-8501, Japan
| | - S.-Z. Zhang
- 2University of Tsukuba, Tsukuba Advanced Research Alliance Center and Department of Chemistry, Tsukuba, Ibaraki 305-8577, Japan
| | - T. Nakahodo
- 3Rikkyo University, Department of Chemistry, 3-34-1 Nishi-Ikebukuro, Tosima-ku, Tokyo 171-8501, Japan
| | - S. Sato
- 2University of Tsukuba, Tsukuba Advanced Research Alliance Center and Department of Chemistry, Tsukuba, Ibaraki 305-8577, Japan
| | - N. Furukawa
- 2University of Tsukuba, Tsukuba Advanced Research Alliance Center and Department of Chemistry, Tsukuba, Ibaraki 305-8577, Japan
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