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Kisoh K, Sugahara G, Ogawa Y, Furukawa S, Ishida Y, Okanoue T, Kohara M, Tateno C. Estimating Drug Efficacy with a Diet-Induced NASH Model in Chimeric Mice with Humanized Livers. Biomedicines 2021; 9:1647. [PMID: 34829876 PMCID: PMC8615377 DOI: 10.3390/biomedicines9111647] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 11/03/2021] [Accepted: 11/03/2021] [Indexed: 01/09/2023] Open
Abstract
Nonalcoholic fatty liver disease/steatohepatitis (NAFLD/NASH) is the most common liver disorder in developed countries. Although many new therapeutics for NASH are present in the drug development pipeline, there are still no approved drugs. One of the reasons that makes NASH drug development challenging is the lack of appropriate animal NASH models that resolve issues arising from inter-species differences between humans and rodents. In the present study, we developed a choline-deficient, L-amino-acid-defined, high-fat-diet (CDAHFD)-induced human NASH model using human liver chimeric mice. We demonstrated human hepatocyte injury by an elevation of plasma human alanine aminotransferase 1 in mice fed CDAHFD. Histological analysis showed that CDAHFD feeding induced similar histological changes to human NASH patients, including ballooning, inflammation, apoptosis, regeneration of human hepatocytes, and pericellular and perisinusoidal fibrosis. The chimeric mice fed CDAHFD were treated with a peroxisome-proliferator-activated receptor α/δ agonist, Elafibranor. Elafibranor ameliorated steatosis, ballooning of hepatocytes, and preserved fibrosis progression. We developed a novel humanized NASH model that can elucidate pathophysiological mechanisms and predict therapeutic efficacy in human NASH. This model will be useful in exploring new drugs and biomarkers in the early stages of human NASH.
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Affiliation(s)
- Keishi Kisoh
- Research and Development Department, PhoenixBio Co., Ltd., 3-4-1 Kagamiyama, Higashihiroshima 739-0046, Japan; (K.K.); (G.S.); (Y.O.); (S.F.); (Y.I.)
| | - Go Sugahara
- Research and Development Department, PhoenixBio Co., Ltd., 3-4-1 Kagamiyama, Higashihiroshima 739-0046, Japan; (K.K.); (G.S.); (Y.O.); (S.F.); (Y.I.)
| | - Yuko Ogawa
- Research and Development Department, PhoenixBio Co., Ltd., 3-4-1 Kagamiyama, Higashihiroshima 739-0046, Japan; (K.K.); (G.S.); (Y.O.); (S.F.); (Y.I.)
| | - Suzue Furukawa
- Research and Development Department, PhoenixBio Co., Ltd., 3-4-1 Kagamiyama, Higashihiroshima 739-0046, Japan; (K.K.); (G.S.); (Y.O.); (S.F.); (Y.I.)
| | - Yuji Ishida
- Research and Development Department, PhoenixBio Co., Ltd., 3-4-1 Kagamiyama, Higashihiroshima 739-0046, Japan; (K.K.); (G.S.); (Y.O.); (S.F.); (Y.I.)
- Research Center for Hepatology and Gastroenterology, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8551, Japan
| | - Takeshi Okanoue
- Department of Gastroenterology and Hepatology, Saiseikai Suita Hospital, 1-2 Kawazonocho, Suita 564-0013, Japan;
| | - Michinori Kohara
- Department of Microbiology and Cell Biology, Tokyo Metropolitan Institute of Medical Science, 2-1-6 Kamikitazawa, Setagaya-ku, Tokyo 156-8506, Japan;
| | - Chise Tateno
- Research and Development Department, PhoenixBio Co., Ltd., 3-4-1 Kagamiyama, Higashihiroshima 739-0046, Japan; (K.K.); (G.S.); (Y.O.); (S.F.); (Y.I.)
- Research Center for Hepatology and Gastroenterology, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8551, Japan
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2
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Fujihira H, Itoi C, Furukawa S, Kato N, Kashino M. Auditory brainstem responses in adults with autism spectrum disorder. Clin Neurophysiol Pract 2021; 6:179-184. [PMID: 34235293 PMCID: PMC8249870 DOI: 10.1016/j.cnp.2021.04.004] [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: 08/23/2020] [Revised: 04/01/2021] [Accepted: 04/26/2021] [Indexed: 12/02/2022] Open
Abstract
OBJECTIVE To investigate possible differences in the auditory peripheral and brainstem functions between adults with autism spectrum disorder (ASD) and neurotypical (NT) adults. METHODS Click-evoked auditory brainstem responses (ABRs) were obtained from 17 high-functioning ASD adults (aged 21-38 years) and 20 NT adults (aged 22-36 years). A relatively large number of stimulus presentations (6000) were adopted, and ABRs by horizontal and vertical electrode montages were evaluated, in order to allow precise evaluations of early ABR components. RESULTS Waves I, II, III, and V were identified in the vertical electrode montage, and wave I and the summating potential (SP) in electrocochleograms were identified in the horizontal electrode montage. There were no significant group differences in the wave I, II, III, and V latencies or the interpeak latencies (IPLs) in the vertical electrode montage. In the horizontal montage, the ASD adults exhibited significantly shortened SP latencies compared with the NT adults, whereas there was no significant group difference in the wave I latency. CONCLUSION The ASD adults may have the abnormalities of processing more in the peripheral auditory system than in the brainstem. SIGNIFICANCE The current study suggests that the peripheral abnormality is associated with ASD.
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Affiliation(s)
- H. Fujihira
- NTT Communication Science Laboratories, Morinosato Wakamiya, Atsugi, Kanagawa, Japan
- Japan Society for the Promotion of Science (JSPS), Kojimachi, Chiyoda-ku, Tokyo, Japan
| | - C. Itoi
- Department of Psychology, Faculty of Letters, Chuo University, Higashinakano, Hachioji, Tokyo, Japan
| | - S. Furukawa
- NTT Communication Science Laboratories, Morinosato Wakamiya, Atsugi, Kanagawa, Japan
| | - N. Kato
- Medical Institute of Developmental Disabilities Research, Showa University, Kitakarasuyama, Setagaya, Tokyo, Japan
| | - M. Kashino
- NTT Communication Science Laboratories, Morinosato Wakamiya, Atsugi, Kanagawa, Japan
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3
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Sugahara G, Yamasaki C, Yanagi A, Furukawa S, Ogawa Y, Fukuda A, Enosawa S, Umezawa A, Ishida Y, Tateno C. Humanized liver mouse model with transplanted human hepatocytes from patients with ornithine transcarbamylase deficiency. J Inherit Metab Dis 2021; 44:618-628. [PMID: 33336822 PMCID: PMC8247293 DOI: 10.1002/jimd.12347] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Revised: 12/10/2020] [Accepted: 12/16/2020] [Indexed: 12/20/2022]
Abstract
Ornithine transcarbamylase deficiency (OTCD) is a metabolic and genetic disease caused by dysfunction of the hepatocytic urea cycle. To develop new drugs or therapies for OTCD, it is ideal to use models that are more closely related to human metabolism and pathology. Primary human hepatocytes (HHs) isolated from two patients (a 6-month-old boy and a 5-year-old girl) and a healthy donor were transplanted into host mice (hemi-, hetero-OTCD mice, and control mice, respectively). HHs were isolated from these mice and used for serial transplantation into the next host mouse or for in vitro experiments. Histological, biochemical, and enzyme activity analyses were performed. Cultured HHs were treated with ammonium chloride or therapeutic drugs. Replacement rates exceeded 80% after serial transplantation in both OTCD mice. These highly humanized OTCD mice showed characteristics similar to OTCD patients that included increased blood ammonia levels and urine orotic acid levels enhanced by allopurinol. Hemi-OTCD mice showed defects in OTC expression and significantly low enzymatic activities, while hetero-OTCD mice showed residual OTC expression and activities. A reduction in ammonium metabolism was observed in cultured HHs from OTCD mice, and treatment with the therapeutic drug reduced the ammonia levels in the culture medium. In conclusion, we established in vivo OTC mouse models with hemi- and hetero-patient HHs. HHs isolated from the mice were useful as an in vitro model of OTCD. These OTC models could be a source of valuable patient-derived hepatocytes that would enable large scale and reproducible experiments using the same donor.
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Affiliation(s)
- Go Sugahara
- Research and Development DepartmentPhoenixBio Co., LtdHigashi‐HiroshimaJapan
| | - Chihiro Yamasaki
- Research and Development DepartmentPhoenixBio Co., LtdHigashi‐HiroshimaJapan
| | - Ami Yanagi
- Research and Development DepartmentPhoenixBio Co., LtdHigashi‐HiroshimaJapan
| | - Suzue Furukawa
- Research and Development DepartmentPhoenixBio Co., LtdHigashi‐HiroshimaJapan
| | - Yuko Ogawa
- Research and Development DepartmentPhoenixBio Co., LtdHigashi‐HiroshimaJapan
| | - Akinari Fukuda
- National Center for Child Health and DevelopmentTokyoJapan
| | - Shin Enosawa
- Division for Advanced Medical SciencesNational Center for Child Health and DevelopmentTokyoJapan
| | - Akihiro Umezawa
- Regenerative MedicineNational Center for Child Health and DevelopmentTokyoJapan
| | - Yuji Ishida
- Research and Development DepartmentPhoenixBio Co., LtdHigashi‐HiroshimaJapan
- Research Center for Hepatology and GastroenterologyHiroshima UniversityHiroshimaJapan
| | - Chise Tateno
- Research and Development DepartmentPhoenixBio Co., LtdHigashi‐HiroshimaJapan
- Research Center for Hepatology and GastroenterologyHiroshima UniversityHiroshimaJapan
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4
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Ogawa A, Watanabe T, Natsume T, Okura E, Saito S, Kato S, Nakayama Y, Furukawa S, Yamaguchi T, Kosho T, Uehara T, Kobayashi N, Agematsu K, Nakazawa Y, Shigemura T. Early-Onset Inflammatory Bowel Disease Caused by Mutations in the X-Linked Gene IL2RG. J Investig Allergol Clin Immunol 2021; 31:69-71. [PMID: 32490820 DOI: 10.18176/jiaci.0523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- A Ogawa
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - T Watanabe
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - T Natsume
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - E Okura
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - S Saito
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - S Kato
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - Y Nakayama
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - S Furukawa
- Department of Laboratory Medicine, Shinshu University Hospital, Matsumoto, Japan
| | - T Yamaguchi
- Department of Medical Genetics, Shinshu University School of Medicine, Matsumoto, Japan.,Center for Medical Genetics, Shinshu University Hospital, Matsumoto, Japan
| | - T Kosho
- Department of Medical Genetics, Shinshu University School of Medicine, Matsumoto, Japan.,Center for Medical Genetics, Shinshu University Hospital, Matsumoto, Japan
| | - T Uehara
- Department of Laboratory Medicine, Shinshu University Hospital, Matsumoto, Japan
| | - N Kobayashi
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - K Agematsu
- Department of Molecular and Cellular Immunology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Y Nakazawa
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - T Shigemura
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
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5
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Ishida Y, Yamasaki C, Iwanari H, Yamashita H, Ogawa Y, Yanagi A, Furukawa S, Kojima Y, Chayama K, Kamiie J, Tateno C. Detection of acute toxicity of aflatoxin B1 to human hepatocytes in vitro and in vivo using chimeric mice with humanized livers. PLoS One 2020; 15:e0239540. [PMID: 32966316 PMCID: PMC7510964 DOI: 10.1371/journal.pone.0239540] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 09/09/2020] [Indexed: 11/19/2022] Open
Abstract
Aflatoxin B1 (AFB1), a mycotoxin, is acutely hepatotoxic to many animals including humans. However, there are marked interspecies differences in sensitivity to AFB1-induced toxicity depending on bioactivation by cytochrome P450s (CYPs). In the present study, we examined the applicability of chimeric mice with humanized livers and derived fresh human hepatocytes for in vivo and vitro studies on AFB1 cytotoxicity to human hepatocytes. Chimeric mice with highly humanized livers and SCID mice received daily injections of vehicle (corn oil), AFB1 (3 mg/kg), and carbon tetrachloride (50 mg/kg) for 2 days. Histological analysis revealed that AFB1 promoted hepatocyte vacuolation and inflammatory cell infiltration in the area containing human hepatocytes. A novel human alanine aminotransferase 1 specific enzyme-linked immunosorbent assay demonstrated the acute toxicity of AFB1 to human hepatocytes in the chimeric mouse livers. The sensitivity of cultured fresh human hepatocytes isolated from the humanized liver mice for AFB1 cytotoxicity was comparable to that of primary human hepatocytes. Long-term exposure to AFB1 (6 or 14 days) produced a more severe cytotoxicity. The half-maximal lethal concentration was 10 times lower in the 2-week treatment than after 2 days of exposure. Lastly, the significant reduction of AFB1 cytotoxicity by a pan-CYP inhibitor or transfection with CYP3A4 specific siRNA clearly suggested that bioactivation of AFB1 catalyzed by CYPs was essential for AFB1 cytotoxicity to the human hepatocytes in our mouse model. Collectively, our results implicate the humanized liver mice and derived fresh human hepatocytes are useful models for studies of AFB1 cytotoxicity to human hepatocytes.
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Affiliation(s)
- Yuji Ishida
- Department of Research and Development, PhoenixBio Co., Ltd., Higashi-Hiroshima, Hiroshima, Japan
- Research Center for Hepatology and Gastroenterology, Hiroshima University, Hiroshima, Hiroshima, Japan
| | - Chihiro Yamasaki
- Department of Research and Development, PhoenixBio Co., Ltd., Higashi-Hiroshima, Hiroshima, Japan
| | - Hiroko Iwanari
- Quantitative Biology and Medicine, Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Meguro, Tokyo, Japan
| | | | - Yuko Ogawa
- Department of Research and Development, PhoenixBio Co., Ltd., Higashi-Hiroshima, Hiroshima, Japan
| | - Ami Yanagi
- Department of Research and Development, PhoenixBio Co., Ltd., Higashi-Hiroshima, Hiroshima, Japan
| | - Suzue Furukawa
- Department of Research and Development, PhoenixBio Co., Ltd., Higashi-Hiroshima, Hiroshima, Japan
| | - Yuha Kojima
- Department of Research and Development, PhoenixBio Co., Ltd., Higashi-Hiroshima, Hiroshima, Japan
| | - Kazuaki Chayama
- Research Center for Hepatology and Gastroenterology, Hiroshima University, Hiroshima, Hiroshima, Japan
- Department of Gastroenterology and Metabolism, Applied Life Sciences, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Hiroshima, Japan
| | - Junichi Kamiie
- Laboratory of Veterinary Pathology, School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan
| | - Chise Tateno
- Department of Research and Development, PhoenixBio Co., Ltd., Higashi-Hiroshima, Hiroshima, Japan
- Research Center for Hepatology and Gastroenterology, Hiroshima University, Hiroshima, Hiroshima, Japan
- * E-mail:
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6
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Hashizume H, Sano Y, Furukawa S, Imokawa S. Eosinophilic granulomatosis with polyangiitis mimicking coronavirus disease 2019: a case report. J Eur Acad Dermatol Venereol 2020; 34:e557-e559. [PMID: 32495957 PMCID: PMC7300604 DOI: 10.1111/jdv.16705] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- H Hashizume
- Department of Dermatology, Iwata City Hospital, Iwata, Japan
| | - Y Sano
- Department of Dermatology, Iwata City Hospital, Iwata, Japan
| | - S Furukawa
- Department of Dermatology, Iwata City Hospital, Iwata, Japan
| | - S Imokawa
- Departmant of Pulmonology, Iwata City Hospital, Iwata, Japan
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7
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Yamashita K, Zhang K, Ichiki RT, Nakamura S, Furukawa S. Novel host immune evasion strategy of the endoparasitoid Drino inconspicuoides. Bull Entomol Res 2019; 109:643-648. [PMID: 30724140 DOI: 10.1017/s0007485318001049] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The tachinid fly Drino inconspicuoides (Diptera: Tachinidae) is an ovolarviparous endoparasitoid whose larvae develop in the host haemocoel and avoids the host immune system. In this study, we investigated the immune evasion mechanisms of this species during infestation in the host Mythimna separata (Lepidoptera: Noctuidae). We discovered a unique 'cloak' that surrounded D. inconspicuoides larvae that penetrated into the host and determined through genomic polymerase chain reaction analysis that this structure originated from the host rather than the tachinid. The 'cloak' contained both haemocytes and fat body cells from the host, with the haemocytes assembling around the larvae first and the fat body cells then covering the haemocyte layer, following which the two mixed. Living D. inconspicuoides larvae that were wrapped in the 'cloak' were not melanized whereas encapsulated dead larvae were melanized, suggesting that this structure contributes to the avoidance of host immune reactions.
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Affiliation(s)
- K Yamashita
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - K Zhang
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - R T Ichiki
- National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki, Japan
| | - S Nakamura
- Japan International Research Center for Agricultural Sciences (JIRCAS), Tsukuba, Ibaraki, Japan
| | - S Furukawa
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
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8
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Minami H, Nogami K, Yada K, Ogiwara K, Furukawa S, Soeda T, Kitazawa T, Shima M. Emicizumab, the bispecific antibody to factors IX/IXa and X/Xa, potentiates coagulation function in factor XI-deficient plasma in vitro. J Thromb Haemost 2019; 17:126-137. [PMID: 30444568 DOI: 10.1111/jth.14334] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [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: 03/10/2018] [Indexed: 08/31/2023]
Abstract
Essentials Emicizumab mimics factor (F)VIIIa cofactor function, augments the intrinsic tenase activity. We assessed the emicizumab-driven hemostatic function in FXI-deficient plasmas. Emicizumab improved the coagulation potentials in severe FXI-deficient plasma. Emicizumab may provide a possibility for clinical application in patients with FXI deficiency. SUMMARY: Background Patients with factor (F)XI deficiency commonly present with markedly prolonged activated partial thromboplastin times (APTT), although bleeding phenotypes are heterogeneous. Emicizumab, a bispecific monoclonal antibody to FIX/FIXa and FX/FXa, mimics FVIIIa cofactor function on phospholipid (PL) surfaces. Antibody reactions were designed, therefore, to augment mechanisms during the propagation phase of blood coagulation. Aim To assess emicizumab-driven hemostatic function in FXI-deficient plasmas. Methods and Results Standard ellagic acid (Elg)/PL-based APTTs of different FXI-deficient plasmas (n = 13; FXI activity, < 1 IU dl-1 ) were markedly shortened dose dependently by the presence of emicizumab. To further analyze the effects of emicizumab, clot waveform analysis (CWA) in FXI-deficient plasmas with emicizumab, triggered by tissue factor (TF)/Elg demonstrated improvements in both clot times, reflecting the initiation phase, and coagulation velocity, which represents the propagation phase. Emicizumab also enhanced the TF/Elg-triggered thrombin generation in FXI-deficient plasmas dose-dependently although the degree of enhancement varied in individual cases. Thrombin generation with either FVII-deficient plasma or FIX-deficient plasma treated with anti-FXI antibody showed little or no increase by the co-presence of emicizumab, suggesting that the accelerated thrombin generation in FXI-deficient plasmas by emicizumab should depend on the FIXa-involved coagulation propagation initially triggered by FVIIa/TF. The ex vivo addition of emicizumab to whole blood from three patients with severe FXI deficiency demonstrated modest, dose-dependent improvements in Ca2+ -triggered thromboelastograms (NATEM mode). Conclusion Emicizumab appeared to improve coagulation function in severe FXI-deficient plasma, and might provide possibilities for clinical application in patients with FXI deficiency.
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Affiliation(s)
- H Minami
- Department of Pediatrics, Nara Medical University, Kashihara, Nara, Japan
| | - K Nogami
- Department of Pediatrics, Nara Medical University, Kashihara, Nara, Japan
| | - K Yada
- Department of Pediatrics, Nara Medical University, Kashihara, Nara, Japan
| | - K Ogiwara
- Department of Pediatrics, Nara Medical University, Kashihara, Nara, Japan
| | - S Furukawa
- Department of Pediatrics, Nara Medical University, Kashihara, Nara, Japan
| | - T Soeda
- Research Division, Chugai Pharmaceutical Co., Ltd, Kamakura, Japan
| | - T Kitazawa
- Research Division, Chugai Pharmaceutical Co., Ltd, Kamakura, Japan
| | - M Shima
- Department of Pediatrics, Nara Medical University, Kashihara, Nara, Japan
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9
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Sevim S, Sorrenti A, Franco C, Furukawa S, Pané S, deMello AJ, Puigmartí-Luis J. Self-assembled materials and supramolecular chemistry within microfluidic environments: from common thermodynamic states to non-equilibrium structures. Chem Soc Rev 2018; 47:3788-3803. [PMID: 29714390 PMCID: PMC5989397 DOI: 10.1039/c8cs00025e] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Indexed: 12/15/2022]
Abstract
Self-assembly is a crucial component in the bottom-up fabrication of hierarchical supramolecular structures and advanced functional materials. Control has traditionally relied on the use of encoded building blocks bearing suitable moieties for recognition and interaction, with targeting of the thermodynamic equilibrium state. On the other hand, nature leverages the control of reaction-diffusion processes to create hierarchically organized materials with surprisingly complex biological functions. Indeed, under non-equilibrium conditions (kinetic control), the spatio-temporal command of chemical gradients and reactant mixing during self-assembly (the creation of non-uniform chemical environments for example) can strongly affect the outcome of the self-assembly process. This directly enables a precise control over material properties and functions. In this tutorial review, we show how the unique physical conditions offered by microfluidic technologies can be advantageously used to control the self-assembly of materials and of supramolecular aggregates in solution, making possible the isolation of intermediate states and unprecedented non-equilibrium structures, as well as the emergence of novel functions. Selected examples from the literature will be used to confirm that microfluidic devices are an invaluable toolbox technology for unveiling, understanding and steering self-assembly pathways to desired structures, properties and functions, as well as advanced processing tools for device fabrication and integration.
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Affiliation(s)
- S. Sevim
- Institute for Chemical & Bioengineering
, Department of Chemistry & Applied Biosciences, ETH Zurich
,
Zurich 8093
, Switzerland
.
;
| | - A. Sorrenti
- Institute for Chemical & Bioengineering
, Department of Chemistry & Applied Biosciences, ETH Zurich
,
Zurich 8093
, Switzerland
.
;
| | - C. Franco
- Institute for Chemical & Bioengineering
, Department of Chemistry & Applied Biosciences, ETH Zurich
,
Zurich 8093
, Switzerland
.
;
| | - S. Furukawa
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS)
, Kyoto University
, Yoshida
,
Sakyo-ku
, Kyoto 606-8501
, Japan
| | - S. Pané
- Multi-Scale Robotics Lab (MSRL)
, Institute of Robotics & Intelligent Systems (IRIS)
, ETH Zurich
,
Zurich 8092
, Switzerland
| | - A. J. deMello
- Institute for Chemical & Bioengineering
, Department of Chemistry & Applied Biosciences, ETH Zurich
,
Zurich 8093
, Switzerland
.
;
| | - J. Puigmartí-Luis
- Institute for Chemical & Bioengineering
, Department of Chemistry & Applied Biosciences, ETH Zurich
,
Zurich 8093
, Switzerland
.
;
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10
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Stassen I, Boldog I, Steuwe C, De Vos D, Roeffaers M, Furukawa S, Ameloot R. Photopatterning of fluorescent host-guest carriers through pore activation of metal-organic framework single crystals. Chem Commun (Camb) 2018; 53:7222-7225. [PMID: 28462973 DOI: 10.1039/c7cc02709e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Encoded fluorescent particles are fabricated through the selective uptake of dyes in photopatterned metal-organic framework single crystals. The concept is based on spatially controlled photochemical cleavage of pore-blocking pendant groups. Because of the crystalline and porous nature of the host, this approach enables guest uptake that is tunable and can be triggered though controlled irradiation.
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Affiliation(s)
- I Stassen
- Centre for Surface Chemistry and Catalysis, KU Leuven - University of Leuven, Celestijnenlaan 200F, Leuven, 3001, Belgium.
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11
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Yoshimasu Y, Ikeda T, Sakai N, Yagi A, Hirayama S, Morinaga Y, Furukawa S, Nakao R. Rapid Bactericidal Action of Propolis against Porphyromonas gingivalis. J Dent Res 2018; 97:928-936. [PMID: 29494308 DOI: 10.1177/0022034518758034] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Propolis, a resinous substance produced by bees, is used as a folk medicine for treatment of periodontal diseases. However, its mode of the action and the compounds responsible for its activities remain obscure. In the present study, we comprehensively investigated the antibacterial activities of ethanol-extracted propolis (EEP) and EEP-derived compounds toward Porphyromonas gingivalis, a keystone pathogen for periodontal diseases. Broth microdilution and agar dilution assays were used to determine the minimum inhibitory concentrations of EEP against a range of oral bacterial species, of which P. gingivalis showed a higher level of sensitivity than oral commensals such as streptococci. Its antibacterial activity toward P. gingivalis was maintained even after extensive heat treatment, demonstrating a high level of thermostability. EEP also induced death of P. gingivalis cells by increasing membrane permeability within 30 min. Spatiotemporal analysis based on high-speed atomic force microscopy revealed that EEP immediately triggered development of aberrant membrane blebs, followed by bleb fusion events on the bacterial surface. Furthermore, we isolated artepillin C, baccharin, and ursolic acid from EEP as antibacterial compounds against P. gingivalis. Of those, artepillin C and baccharin showed bacteriostatic activities with membrane blebbing, while ursolic acid showed bactericidal activity with membrane rupture. In particular, ursolic acid demonstrated a greater ability to affect bacterial membrane potential with increased membrane permeability, probably because of its highly lipophilic nature as compared with other compounds. Taken together, these findings provide mechanistic insight into the antibacterial activities of EEP and its exquisite membrane-targeting antibacterial compounds and imply the applicability of narrow-spectrum therapeutics with EEP for treatment of periodontitis. In addition, the advanced technology utilized in the present study to visualize the nanometer-scale dynamics of microorganisms will contribute to expanding our understanding of the activities of antimicrobials and the mechanism of drug resistance in bacteria.
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Affiliation(s)
- Y Yoshimasu
- 1 Department of Bacteriology I, National Institute of Infectious Diseases, Tokyo, Japan.,2 Department of Food Bioscience and Biotechnology, College of Bioresource Science, Nihon University, Kanagawa, Japan
| | - T Ikeda
- 3 Department of Pharmaceutical Sciences, Sojo University, Kumamoto, Japan
| | - N Sakai
- 4 Division of Medical Elemental Technology Development, Department of Micro System Technology, Olympus Corporation, Tokyo, Japan
| | - A Yagi
- 4 Division of Medical Elemental Technology Development, Department of Micro System Technology, Olympus Corporation, Tokyo, Japan
| | - S Hirayama
- 1 Department of Bacteriology I, National Institute of Infectious Diseases, Tokyo, Japan.,5 Japan Agency for Medical Research and Development (AMED), Tokyo, Japan
| | - Y Morinaga
- 2 Department of Food Bioscience and Biotechnology, College of Bioresource Science, Nihon University, Kanagawa, Japan
| | - S Furukawa
- 2 Department of Food Bioscience and Biotechnology, College of Bioresource Science, Nihon University, Kanagawa, Japan.,Deceased
| | - R Nakao
- 1 Department of Bacteriology I, National Institute of Infectious Diseases, Tokyo, Japan
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12
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Nishida S, Inagaki R, Furukawa S, Iwata M, Suzuki J, Ito Y, Yasuda T. Selegiline hydrochloride (SEL) inhibits the uptake of 3 meta–iodobenzylguanidine (MIBG) and influences the result of MIBG myocardial scintigraphy in patients with parkinsonism. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1664] [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: 10/18/2022]
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13
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Suzuki J, Inagaki R, Furukawa S, Iwata M, Nakai N, Nishida S, Ito Y. Efficacy of prehospital stroke scale including atrial fibrillation (Topspin) –10 years experiences. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2829] [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: 11/25/2022]
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14
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Furukawa S, Nogami K, Ogiwara K, Yada K, Shima M. Successful prophylaxis using activated prothrombin complex concentrates (aPCC) in a severe haemophilia A patient with inhibitor previously unresponsive to on-demand daily infusions of aPCC. Haemophilia 2017; 23:e481-e484. [PMID: 28771891 DOI: 10.1111/hae.13310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/12/2017] [Indexed: 06/07/2023]
Affiliation(s)
- S Furukawa
- Department of Pediatrics, Nara Medical University, Kashihara, Nara, Japan
| | - K Nogami
- Department of Pediatrics, Nara Medical University, Kashihara, Nara, Japan
| | - K Ogiwara
- Department of Pediatrics, Nara Medical University, Kashihara, Nara, Japan
| | - K Yada
- Department of Pediatrics, Nara Medical University, Kashihara, Nara, Japan
| | - M Shima
- Department of Pediatrics, Nara Medical University, Kashihara, Nara, Japan
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15
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Furukawa S, Nogami K, Yoshizawa H, Ogiwara K, Shima M. Successful perioperative haemostatic management of aortic coarctation in a 5-week-old infant with severe haemophilia A. Haemophilia 2017; 23:e243-e246. [DOI: 10.1111/hae.13229] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/13/2017] [Indexed: 11/27/2022]
Affiliation(s)
- S. Furukawa
- Pediatrics Nara Medical University; Kashihara Nara Japan
| | - K. Nogami
- Pediatrics Nara Medical University; Kashihara Nara Japan
| | - H. Yoshizawa
- Pediatrics Nara Medical University; Kashihara Nara Japan
| | - K. Ogiwara
- Pediatrics Nara Medical University; Kashihara Nara Japan
| | - M. Shima
- Pediatrics Nara Medical University; Kashihara Nara Japan
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16
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Kyozuka H, Watanabe T, Furukawa S, Soeda S, Kiko Y, Fujimori K. Lymphoepithelioma-like carcinoma of the uterine cervix: a case report. EUR J GYNAECOL ONCOL 2017; 38:459-461. [PMID: 29693892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Lymphoepithelioma-like carcinoma (LELC) is a rare variant of carcinoma of the uterine cervix, of which Epstein-Barr virus (EBV) and/or human papilloma virus (HPV) may play an important role in the pathogenesis. The authors report a case of a patient with cervical LELC who was also examined for the presence of EBV and HPV. A 31-year-old Japanese female presented with irregular genital bleeding. The biopsy showed an invasive squamous cell carcinoma. Based on the clinical data, the patient was diagnosed as having squamous cervical carcinoma, and radical hysterectomy with ovarian conservation was performed. A diagnosis of cervical LELC was then made by histological methods. An additional examination revealed that the patient was infected with HPV types 16 and 71, but not infected with EBV.
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17
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Kawahara T, Murakami S, Noiri Y, Ehara A, Takemura N, Furukawa S, Ebisu S. Effects of Cyclosporin-A-induced Immunosuppression on Periapical Lesions in Rats. J Dent Res 2016; 83:683-7. [PMID: 15329372 DOI: 10.1177/154405910408300905] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Cyclosporin A (CsA) might induce immune response alterations in periapical lesions and modify bone remodeling. This study determined the changes that occur in the periapical lesions of rats during CsA administration and after CsA withdrawal. After the induction of periapical lesions, the animals were treated with CsA (0–20 mg/kg/day) for 4 wks. Lesion volumes were measured by computed tomography. Histological observations and immunohistochemical evaluations were performed with anti-CD3 and anti-CD25 antibodies. CsA administration reduced lesion volumes, and the lesions significantly expanded after CsA withdrawal. CsA inhibited the proliferation and activation of T-cells at lesion sites. The effects of CsA on T-cells were dose-dependent up to 10 mg/kg/day, after which no significant difference was evident. These results suggest that CsA inhibits periapical destruction by interfering with T-cell function in periapical lesions.
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Affiliation(s)
- T Kawahara
- Department of Restorative Dentistry, Osaka University Graduate School of Dentistry, Yamadaoka, Suita, Japan
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18
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Furukawa S, Sakai T, Niiya T, Miyaoka H, Miyake T, Yamamoto S, Maruyama K, Ueda T, Senba H, Todo Y, Torisu M, Minami H, Onji M, Tanigawa T, Matsuura B, Hiasa Y, Miyake Y. Diabetic peripheral neuropathy and prevalence of erectile dysfunction in Japanese patients aged <65 years with type 2 diabetes mellitus: The Dogo Study. Int J Impot Res 2016; 29:30-34. [PMID: 27784886 DOI: 10.1038/ijir.2016.40] [Citation(s) in RCA: 11] [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] [Received: 04/29/2015] [Revised: 07/13/2016] [Accepted: 10/03/2016] [Indexed: 12/22/2022]
Abstract
Only limited epidemiological evidence exists regarding the relationship between diabetic neuropathy and erectile dysfunction (ED) among Japanese patients with type 2 diabetes mellitus. To investigate the relationship between diabetic neuropathy and ED among Japanese patients with type 2 diabetes mellitus, a multicenter cross-sectional study was conducted in 287 male Japanese patients with type 2 diabetes mellitus, age (19-65 years). Diabetic neuropathy was diagnosed if the patients showed two or more of the following three characteristics: neuropathic symptoms, decreased or disappeared Achilles tendon reflex and/or abnormal vibration perception. ED, moderate to severe ED, and severe ED were defined as present when a subject had a Sexual Health Inventory for Men score <22, <12 and <8, respectively. The prevalence values of diabetic neuropathy and severe ED were 47.0 and 39.0%, respectively. Diabetic neuropathy was independently positively associated with severe ED, but not ED and moderate ED: the adjusted odds ratio was 1.90 (95% confidence interval: 1.08-3.38). No relationships were found between diabetic retinopathy or diabetic nephropathy and ED. Diabetic neuropathy is positively associated with severe erectile dysfunction among Japanese type 2 diabetes mellitus patients aged <65 years.
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Affiliation(s)
- S Furukawa
- Department of Epidemiology and Preventive Medicine, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Japan.,Epidemiology and Medical Statistics Unit, Translational Research Center, Ehime University Hospital, Shitsukawa, Toon, Japan
| | - T Sakai
- Department of Internal Medicine, Yawatahama General City Hospital, Yawatahama, Japan
| | - T Niiya
- Department of Internal Medicine, Matsuyama Shimin Hospital, Otemachi, Matsuyama, Japan
| | - H Miyaoka
- Department of Internal Medicine, Saiseikai Matsuyama Hospital, Matsuyama, Japan
| | - T Miyake
- Department of Gastroenterology and Metabology, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Japan
| | - S Yamamoto
- Department of Lifestyle-related Medicine and Endocrinology, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Japan
| | - K Maruyama
- Department of Public Health, Juntendo University School of Medicine, Bunkyo, Tokyo, Japan
| | - T Ueda
- Department of Internal Medicine, Ehime Prefectural Central Hospital, Matsuyama, Japan
| | - H Senba
- Department of Epidemiology and Preventive Medicine, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Japan.,Department of Gastroenterology and Metabology, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Japan
| | - Y Todo
- Department of Internal Medicine, Matsuyama Shimin Hospital, Otemachi, Matsuyama, Japan
| | - M Torisu
- Department of Internal Medicine, Saiseikai Saijo Hospital, Saijo, Japan
| | - H Minami
- Department of Internal Medicine, Ehime Niihama Hospital, Niihama, Japan
| | - M Onji
- Department of Internal Medicine, Saiseikai Imabari Hospital, Imabari, Japan
| | - T Tanigawa
- Department of Public Health, Juntendo University School of Medicine, Bunkyo, Tokyo, Japan
| | - B Matsuura
- Department of Lifestyle-related Medicine and Endocrinology, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Japan
| | - Y Hiasa
- Department of Gastroenterology and Metabology, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Japan
| | - Y Miyake
- Department of Epidemiology and Preventive Medicine, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Japan.,Epidemiology and Medical Statistics Unit, Translational Research Center, Ehime University Hospital, Shitsukawa, Toon, Japan
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19
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Janson O, Furukawa S, Momoi T, Sindzingre P, Richter J, Held K. Magnetic Behavior of Volborthite Cu_{3}V_{2}O_{7}(OH)_{2}·2H_{2}O Determined by Coupled Trimers Rather than Frustrated Chains. Phys Rev Lett 2016; 117:037206. [PMID: 27472136 DOI: 10.1103/physrevlett.117.037206] [Citation(s) in RCA: 4] [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: 09/14/2015] [Indexed: 06/06/2023]
Abstract
Motivated by recent experiments on volborthite single crystals showing a wide 1/3-magnetization plateau, we perform microscopic modeling by means of density functional theory (DFT) with the single-crystal structural data as a starting point. Using DFT+U, we find four leading magnetic exchanges: antiferromagnetic J and J_{2}, as well as ferromagnetic J^{'} and J_{1}. Simulations of the derived spin Hamiltonian show good agreement with the experimental low-field magnetic susceptibility and high-field magnetization data. The 1/3-plateau phase pertains to polarized magnetic trimers formed by strong J bonds. An effective J→∞ model shows a tendency towards condensation of magnon bound states preceding the plateau phase.
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Affiliation(s)
- O Janson
- Institut für Festkörperphysik, TU Wien, Wiedner Hauptstraße 8-10, 1040 Vienna, Austria
| | - S Furukawa
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - T Momoi
- Condensed Matter Theory Laboratory, RIKEN, Wako, Saitama 351-0198, Japan
- RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama 351-0198, Japan
| | - P Sindzingre
- Laboratoire de Physique Théorique de la Matière Condensée, Université P. & M. Curie, 75252 Paris, France
| | - J Richter
- Institut für Theoretische Physik, Universität Magdeburg, D-39016 Magdeburg, Germany
| | - K Held
- Institut für Festkörperphysik, TU Wien, Wiedner Hauptstraße 8-10, 1040 Vienna, Austria
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20
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Abstract
The pathogenesis of thrombocytopenia in patients with antiphospholipid syndrome (APS) is heterogeneous. Patients with antiphospholipid antibodies (aPL) and thrombocytopenia in the absence of clinical manifestations of APS will be diagnosed and treated as idiopathic thrombocytopenic purpura. However, the presence of aPL places those individuals at particular risk for developing both bleeding and thrombotic complications. Therefore, we propose the inclusion of such patients in the subgroup ‘aPL-associated thrombocytopenia’. More attention should be devoted to this subgroup of patients to elucidate the role of aPL in the development of thrombocytopenia and to facilitate the adequate monitoring of its potential thrombotic risk.
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MESH Headings
- Antibodies, Antiphospholipid/blood
- Antibodies, Antiphospholipid/physiology
- Humans
- Purpura, Thrombocytopenic, Idiopathic/blood
- Purpura, Thrombocytopenic, Idiopathic/physiopathology
- Purpura, Thrombocytopenic, Idiopathic/prevention & control
- Purpura, Thrombotic Thrombocytopenic/blood
- Purpura, Thrombotic Thrombocytopenic/physiopathology
- Purpura, Thrombotic Thrombocytopenic/prevention & control
- Risk Factors
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Affiliation(s)
- T Atsumi
- Department of Medicine II, Hokkaido University Graduate School of Medicine, Sapporo, Japan.
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21
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Nogami K, Ogiwara K, Yada K, Shida Y, Takeyama M, Yaoi H, Minami H, Furukawa S, Hosokawa K, Shima M. Assessing the clinical severity of type 1 von Willebrand disease patients with a microchip flow-chamber system. J Thromb Haemost 2016; 14:667-74. [PMID: 27061057 DOI: 10.1111/jth.13273] [Citation(s) in RCA: 20] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Indexed: 11/30/2022]
Abstract
BACKGROUND The clinical phenotype of von Willebrand disease (VWD) is heterogeneous, and von Willebrand factor ristocetin cofactor activity (VWF:RCo) does not always reflect clinical severity, especially in VWD type 1. We have reported the potential of a microchip flow-chamber system (Total-Thrombus Formation Analysis System [T-TAS®]) for assessing physiologic hemostasis in VWD. Aim To evaluate the relationship between T-TAS, bleeding score (BS) and laboratory test results in type 1 VWD patients. METHODS Microchips coated with collagen (platelet chip [PL-chip]) or collagen/thromboplastin (AR-chip) were used to assess platelet thrombus formation (PTF) at high shear rates or fibrin-rich PTF at low shear rates, respectively, in whole blood from 50 patients. The times needed for the flow pressure to increase by 10 kPa and 30 kPa (T10 and T30 ) from baseline were calculated from flow pressure curves. BS was determined by the use of a standardized questionnaire. RESULTS PL-T10 values correlated with BS (R(2) ~ 0.45) better than VWF:RCo (R(2) ~ 0.36), irrespective of the flow rate, whereas AR-T10 showed only a weak correlation with BS (R(2) ~ 0.18). Patients with PL-T10 > 10 min or AR-T10 > 30 min had lower VWF levels and higher BS than those with PL-T10 ≤ 10 min or AR-T10 ≤ 30 min, and the greatest differences were observed with PL-T10. Clinical severity appeared to correlate best with PL-T10 > 8 min. BS was significantly higher in patients with VWF:RCo of < 10 IU dL(-1) than in those with VWF:RCo of 10 IU dL(-1) to < 25 IU dL(-1) and 25-40 IU dL(-1). In patients with VWF:RCo of < 10 IU dL(-1) , BS was significantly higher in those with PL-T10 > 8 min than in those with PL-T10 ≤ 8 min. CONCLUSION T-TAS could be a useful technique for discriminating and predicting BS in VWD type 1 patients.
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Affiliation(s)
- K Nogami
- Department of Pediatrics, Nara Medical University, Kashihara, Nara, Japan
| | - K Ogiwara
- Department of Pediatrics, Nara Medical University, Kashihara, Nara, Japan
| | - K Yada
- Department of Pediatrics, Nara Medical University, Kashihara, Nara, Japan
| | - Y Shida
- Department of Pediatrics, Nara Medical University, Kashihara, Nara, Japan
| | - M Takeyama
- Department of Pediatrics, Nara Medical University, Kashihara, Nara, Japan
| | - H Yaoi
- Department of Pediatrics, Nara Medical University, Kashihara, Nara, Japan
| | - H Minami
- Department of Pediatrics, Nara Medical University, Kashihara, Nara, Japan
| | - S Furukawa
- Department of Pediatrics, Nara Medical University, Kashihara, Nara, Japan
| | - K Hosokawa
- Research Institute, Fujimori Kogyo Co., Ltd, Yokohama, Kanagawa, Japan
| | - M Shima
- Department of Pediatrics, Nara Medical University, Kashihara, Nara, Japan
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22
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Abe M, Hagio S, Tsuji N, Kuroda Y, Hayashi S, Furukawa S. Immunohistochemical analysis of γH2AX, a biomarker for DNA double-strand breaks, in the liver of genotoxic carcinogen-treated mice. Toxicol Lett 2015. [DOI: 10.1016/j.toxlet.2015.08.755] [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: 10/23/2022]
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23
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Furukawa S, Nogami K, Ogiwara K, Yada K, Minami H, Shima M. Systematic monitoring of hemostatic management in hemophilia A patients with inhibitor in the perioperative period using rotational thromboelastometry. J Thromb Haemost 2015; 13:1279-84. [PMID: 25903848 DOI: 10.1111/jth.12987] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [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: 11/12/2014] [Accepted: 04/19/2015] [Indexed: 12/01/2022]
Abstract
BACKGROUND The management of hemophilia A (HA) patients with inhibitors on bypassing therapy remains challenging. In particular, the monitoring of treatment is restricted by the limited reliability and lack of standardization of currently available methods to evaluate the physiological effects of various hemostatic agents. Accurate monitoring of these patients is particularly important in surgical situations. The recently developed comprehensive coagulation assays, including rotational thromboelastometry (ROTEM), may be useful in these circumstances. OBJECTIVE We have attempted to establish a systematic monitoring protocol using ROTEM (NATEM triggered by CaCl2 ) to evaluate the choice and effectiveness of different bypassing agents in the perioperative period. METHODS AND RESULTS The hemostatic effects of recombinant factor VIIa (rFVIIa) and activated prothrombin complex concentrates (aPCC) were determined using a three-step procedure (spike, preoperative and perioperative) in eight patients with HA inhibitor admitted for elective surgery and assessed for individually tailored therapy. The ROTEM parameters demonstrated similar improvement to approximately normal levels at each stage after treatment with rFVIIa. Results in the presence of aPCC showed a marked improvement in the spike data, although this appeared to be different from those in the preoperative and perioperative assessments. The information derived from the spike and preoperative findings provided a useful guide for establishing an effective dose of therapeutic material, and facilitated good hemostatic control during and after surgery in all cases. CONCLUSION The findings suggest that this systematic analysis using ROTEM could provide a promising strategy for the use of bypassing therapy in HA patients with inhibitor.
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Affiliation(s)
- S Furukawa
- Department of Pediatrics, Nara Medical University, Kashihara, Japan
| | - K Nogami
- Department of Pediatrics, Nara Medical University, Kashihara, Japan
| | - K Ogiwara
- Department of Pediatrics, Nara Medical University, Kashihara, Japan
| | - K Yada
- Department of Pediatrics, Nara Medical University, Kashihara, Japan
| | - H Minami
- Department of Pediatrics, Nara Medical University, Kashihara, Japan
| | - M Shima
- Department of Pediatrics, Nara Medical University, Kashihara, Japan
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24
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Ribierre JC, Zhao L, Furukawa S, Kikitsu T, Inoue D, Muranaka A, Takaishi K, Muto T, Matsumoto S, Hashizume D, Uchiyama M, André P, Adachi C, Aoyama T. Ambipolar organic field-effect transistors based on solution-processed single crystal microwires of a quinoidal oligothiophene derivative. Chem Commun (Camb) 2015; 51:5836-9. [PMID: 25686576 DOI: 10.1039/c4cc09608h] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A simple and versatile solution-processing method based on molecular self-assembly is used to fabricate organic single crystal microwires of a low bandgap quinoidal oligothiophene derivative. Individual single crystal microwire transistors present well-balanced ambipolar behaviour with hole and electron mobilities as high as 0.4 and 0.5 cm(2) V(-1) s(-1), respectively.
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Affiliation(s)
- J C Ribierre
- Kyushu University, Center for Organic Photonics and Electronics Research (OPERA), Fukuoka 819-0395, Japan.
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25
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Yashiro K, Iwata A, Takada K, Murakami S, Uchiyama Y, Furukawa S. Temporomandibular joint articulations on working side during chewing in adult females with cross-bite and mandibular asymmetry. J Oral Rehabil 2014; 42:163-72. [PMID: 25545582 DOI: 10.1111/joor.12266] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/23/2014] [Indexed: 11/28/2022]
Abstract
Influence of mandibular asymmetry and cross-bite on temporomandibular joint (TMJ) articulation remained unknown. This study aimed to investigate whether/how the working-side condylar movement irregularity and articular spaces during chewing differ between patients with mandibular asymmetry/cross-bite and control subjects. The cross-bite group and the control group consisted of 10 adult female patients and 10 adult female subjects, respectively. They performed unilateral gum-chewing. The mandibular movements were recorded using a video-based opto-electronic system. The 3D articular surface of the TMJ for each individual was reconstructed using CT/MRI data. For local condylar points, the normalised jerk cost (NJC) towards normal direction to the condylar surface, the angle between tangential velocity vector and condylar long axis and intra-articular space were measured. Three rotatory angles at centre of the condyle were also measured. During closing and intercuspation, (i) movements of posterior portion of the deviated side condyle showed significantly less smoothness as compared with those for the non-deviated side and control subjects, (ii) the rotations of the condyle on the deviated side induced greater intra-articular space at posterior and lateral portions. These findings suggest that chewing on the side of mandibular deviation/cross-bite may cause irregular movement and enlarged intra-articular space at posterior portion of the deviated side condyle.
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Affiliation(s)
- K Yashiro
- Department of Orthodontics and Dentofacial Orthopedics, Graduate School of Dentistry and Center for Advanced Medical Engineering and Informatics, Osaka University, Suita, Japan
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26
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Furukawa S, Fujiwara K, Ohara G, Kagohashi K, Satoh H. Domperidone-induced hyper-prolactinemia in an elderly who received chemotherapy for lung cancer. Eur Geriatr Med 2014. [DOI: 10.1016/j.eurger.2014.06.030] [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: 11/24/2022]
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27
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Jeong J, Le MD, Bourges P, Petit S, Furukawa S, Kim SA, Lee S, Cheong SW, Park JG. Temperature-dependent interplay of Dzyaloshinskii-Moriya interaction and single-ion anisotropy in multiferroic BiFeO3. Phys Rev Lett 2014; 113:107202. [PMID: 25238381 DOI: 10.1103/physrevlett.113.107202] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Indexed: 06/03/2023]
Abstract
Low-energy magnon excitations in multiferroic BiFeO3 were measured in detail as a function of temperature around several Brillouin zone centers by inelastic neutron scattering experiments on single crystals. Unique features around 1 meV are directly associated with the interplay of the Dzyaloshinskii-Moriya interaction and a small single-ion anisotropy. The temperature dependence of these and the exchange interactions were determined by fitting the measured magnon dispersion with spin-wave calculations. The spectra best fit an easy-axis type magnetic anisotropy and the deduced exchange and anisotropy parameters enable us to determine the anharmonicity of the magnetic cycloid. We then draw a direct connection between the changes in the parameters of spin Hamiltonian with temperature and the physical properties and structural deformations of BiFeO3.
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Affiliation(s)
- Jaehong Jeong
- Center for Correlated Electron Systems, Institute for Basic Science (IBS), Seoul 151-747, Korea and Department of Physics and Astronomy, Seoul National University, Seoul 151-747, Korea
| | - Manh Duc Le
- Center for Correlated Electron Systems, Institute for Basic Science (IBS), Seoul 151-747, Korea and Department of Physics and Astronomy, Seoul National University, Seoul 151-747, Korea
| | - P Bourges
- Laboratoire Léon Brillouin, CEA-CNRS, CEA-Saclay, F-91191 Gif-sur-Yvette, France
| | - S Petit
- Laboratoire Léon Brillouin, CEA-CNRS, CEA-Saclay, F-91191 Gif-sur-Yvette, France
| | - S Furukawa
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Shin-Ae Kim
- Neutron Science Division, Korea Atomic Energy Research Institute, Daejeon 305-353, Korea
| | - Seongsu Lee
- Neutron Science Division, Korea Atomic Energy Research Institute, Daejeon 305-353, Korea
| | - S-W Cheong
- Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
| | - Je-Geun Park
- Center for Correlated Electron Systems, Institute for Basic Science (IBS), Seoul 151-747, Korea and Department of Physics and Astronomy, Seoul National University, Seoul 151-747, Korea
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Yashiro K, Yamamoto K, Takada K, Murakami S, Uchiyama Y, Furukawa S. Influence of balancing-side occlusal interference on smoothness of working-side condylar movement and intra-articular space in chewing efforts. J Oral Rehabil 2014; 42:10-7. [PMID: 25159131 DOI: 10.1111/joor.12225] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/30/2014] [Indexed: 11/30/2022]
Abstract
Response of temporomandibular joint (TMJ) articulation adapting to occlusal alteration has been sparsely known. For 10 healthy adults with acceptably good occlusion, an artificial occlusal interference (OI) was introduced to the lower molar on the balancing side of unilateral chewing. Subjects were asked to chew a gum on their preferred side. The chewing jaw movements with/without the OI were recorded using a video-based optoelectronic system. The mandibular movements were generated in each individual's TMJ model reconstructed by magnetic resonance images. The smoothness of local condylar point movements towards the normal direction of the condylar surface and interarticular space on the working side was measured. Overall, the smoothness of condylar point movements in the closing phase was impaired immediately after introduction of the OI. In the intercuspal phase, the OI increased the joint space. After about 60 chewing cycles, the movement smoothness and joint space began to recover. These findings suggest that OI on the balancing side induced irregular stress field translation on the working-side condylar surface followed by acute recovery process.
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Affiliation(s)
- K Yashiro
- Department of Orthodontics and Dentofacial Orthopedics, Graduate School of Dentistry and Center for Advanced Medical Engineering and Informatics, Osaka University, Suita, Japan
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Moriyama M, Furukawa S, Kawano S, Goto Y, Kiyoshima T, Tanaka A, Maehara T, Hayashida JN, Ohta M, Nakamura S. The diagnostic utility of biopsies from the submandibular and labial salivary glands in IgG4-related dacryoadenitis and sialoadenitis, so-called Mikulicz's disease. Int J Oral Maxillofac Surg 2014; 43:1276-81. [PMID: 25062551 DOI: 10.1016/j.ijom.2014.06.014] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Revised: 06/26/2014] [Accepted: 06/30/2014] [Indexed: 12/24/2022]
Abstract
IgG4-related dacryoadenitis and sialoadenitis (IgG4-DS) is characterized by serum IgG4 elevation and the infiltration of IgG4-positive plasma cells in glandular tissues. For definitive diagnosis of IgG4-DS, biopsies of local lesions are recommended to exclude Sjögren's syndrome (SS), malignant tumours, and similar disorders. In this study, we examined the diagnostic utility of submandibular gland (SMG) and labial salivary gland (LSG) biopsies in IgG4-DS. Fourteen patients presenting with swelling of the SMG (eight females and six males) underwent both SMG and LSG biopsies. The sensitivity, specificity, and accuracy of SMG biopsies were all 100.0%. In contrast, those of LSG biopsies were 69.2%, 100.0%, and 71.4%, respectively. Thirty-three out of 61 LSG biopsies (54.1%) from all 14 patients were positive for the diagnostic criteria of IgG4-DS (IgG4-positive/IgG-positive plasma cells >0.4). None of the patients experienced complications such as facial nerve palsy, sialocele, or hyposalivation. The IgG4/IgG ratio showed no significant correlation between the LSG and SMG. The final diagnosis was IgG4-DS in 13 patients and marginal zone B-cell lymphoma (MZL) in one. These results suggest that incisional biopsy of the SMG is useful and appropriate for the definitive diagnosis of IgG4-DS, while diagnosis by LSG biopsy alone requires more caution.
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Affiliation(s)
- M Moriyama
- Section of Oral and Maxillofacial Oncology, Division of Maxillofacial Diagnostic and Surgical Sciences, Faculty of Dental Science, Kyushu University, Fukuoka, Japan.
| | - S Furukawa
- Section of Oral and Maxillofacial Oncology, Division of Maxillofacial Diagnostic and Surgical Sciences, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - S Kawano
- Section of Oral and Maxillofacial Oncology, Division of Maxillofacial Diagnostic and Surgical Sciences, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Y Goto
- Section of Oral and Maxillofacial Oncology, Division of Maxillofacial Diagnostic and Surgical Sciences, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - T Kiyoshima
- Laboratory of Oral Pathology, Division of Maxillofacial Diagnostic and Surgical Sciences, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - A Tanaka
- Section of Oral and Maxillofacial Oncology, Division of Maxillofacial Diagnostic and Surgical Sciences, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - T Maehara
- Section of Oral and Maxillofacial Oncology, Division of Maxillofacial Diagnostic and Surgical Sciences, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - J-N Hayashida
- Section of Oral and Maxillofacial Oncology, Division of Maxillofacial Diagnostic and Surgical Sciences, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - M Ohta
- Section of Oral and Maxillofacial Oncology, Division of Maxillofacial Diagnostic and Surgical Sciences, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - S Nakamura
- Section of Oral and Maxillofacial Oncology, Division of Maxillofacial Diagnostic and Surgical Sciences, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
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Furukawa S, Moriyama M, Kawano S, Tanaka A, Maehara T, Hayashida JN, Goto Y, Kiyoshima T, Shiratsuchi H, Ohyama Y, Ohta M, Imabayashi Y, Nakamura S. Clinical relevance of Küttner tumour and IgG4-related dacryoadenitis and sialoadenitis. Oral Dis 2014; 21:257-62. [PMID: 24844187 PMCID: PMC4359042 DOI: 10.1111/odi.12259] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Revised: 05/05/2014] [Accepted: 05/14/2014] [Indexed: 12/24/2022]
Abstract
Objectives Küttner tumour (KT), so-called chronic sclerosing sialoadenitis, is characterised by concomitant swelling of the submandibular glands secondary to strong lymphocytic infiltration and fibrosis independent of sialolith formation. However, recent studies have indicated that some patients with KT develop high serum levels of IgG4 and infiltration of IgG4-positive plasma cells, namely IgG4-related dacryoadenitis and sialoadenitis (IgG4-DS), so-called Mikulicz's disease. The aim of this study was to clarify the clinical and pathological associations between KT and IgG4-DS. Materials and Methods Fifty-four patients pathologically diagnosed with KT or chronic sialoadenitis were divided into two groups according to the presence or absence of sialolith (KT-S (+) or KT-S (−), respectively). Results There were no significant differences in the clinical findings, including the mean age, sex and disease duration, between the two groups. All patients in the KT-S (+) group showed unilateral swelling without infiltration of IgG4-positive plasma cells or a history of other IgG4-related diseases (IgG4-RD), while those in the KT-S (−) group showed bilateral swelling (37.5%), strong infiltration of IgG4-positive plasma cells (87.5%) and a history of other IgG4-RD (12.5%). Conclusions These results suggest an association between the pathogeneses of KT-S (−) and IgG4-DS, but not KT-S (+).
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Affiliation(s)
- S Furukawa
- Section of Oral and Maxillofacial Oncology, Division of Maxillofacial Diagnostic and Surgical Sciences, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
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Tagawa M, Shirane K, Yu L, Sato T, Furukawa S, Mizuguchi H, Kuji R, Kawamura K, Takahashi N, Kato K, Hayakawa S, Sawada S, Furukawa K. Enhanced expression of the β4-galactosyltransferase 2 gene impairs mammalian tumor growth. Cancer Gene Ther 2014; 21:219-27. [DOI: 10.1038/cgt.2014.21] [Citation(s) in RCA: 9] [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] [Received: 02/15/2014] [Revised: 04/14/2014] [Accepted: 04/16/2014] [Indexed: 01/09/2023]
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Ohyama K, Moriyama M, Hayashida JN, Tanaka A, Maehara T, Ieda S, Furukawa S, Ohta M, Imabayashi Y, Nakamura S. Saliva as a potential tool for diagnosis of dry mouth including Sjögren's syndrome. Oral Dis 2014; 21:224-31. [DOI: 10.1111/odi.12252] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Revised: 04/10/2014] [Accepted: 04/15/2014] [Indexed: 01/29/2023]
Affiliation(s)
- K Ohyama
- Section of Oral and Maxillofacial Oncology; Division of Maxillofacial Diagnostic and Surgical Sciences; Faculty of Dental Science; Kyushu University; Fukuoka Japan
| | - M Moriyama
- Section of Oral and Maxillofacial Oncology; Division of Maxillofacial Diagnostic and Surgical Sciences; Faculty of Dental Science; Kyushu University; Fukuoka Japan
| | - J-N Hayashida
- Section of Oral and Maxillofacial Oncology; Division of Maxillofacial Diagnostic and Surgical Sciences; Faculty of Dental Science; Kyushu University; Fukuoka Japan
| | - A Tanaka
- Section of Oral and Maxillofacial Oncology; Division of Maxillofacial Diagnostic and Surgical Sciences; Faculty of Dental Science; Kyushu University; Fukuoka Japan
| | - T Maehara
- Section of Oral and Maxillofacial Oncology; Division of Maxillofacial Diagnostic and Surgical Sciences; Faculty of Dental Science; Kyushu University; Fukuoka Japan
| | - S Ieda
- Section of Oral and Maxillofacial Oncology; Division of Maxillofacial Diagnostic and Surgical Sciences; Faculty of Dental Science; Kyushu University; Fukuoka Japan
| | - S Furukawa
- Section of Oral and Maxillofacial Oncology; Division of Maxillofacial Diagnostic and Surgical Sciences; Faculty of Dental Science; Kyushu University; Fukuoka Japan
| | - M Ohta
- Section of Oral and Maxillofacial Oncology; Division of Maxillofacial Diagnostic and Surgical Sciences; Faculty of Dental Science; Kyushu University; Fukuoka Japan
| | - Y Imabayashi
- Section of Oral and Maxillofacial Oncology; Division of Maxillofacial Diagnostic and Surgical Sciences; Faculty of Dental Science; Kyushu University; Fukuoka Japan
| | - S Nakamura
- Section of Oral and Maxillofacial Oncology; Division of Maxillofacial Diagnostic and Surgical Sciences; Faculty of Dental Science; Kyushu University; Fukuoka Japan
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Blanchard F, Sumida K, Wolpert C, Tsotsalas M, Tanaka T, Doi A, Kitagawa S, Cooke DG, Furukawa S, Tanaka K. Terahertz phase contrast imaging of sorption kinetics in porous coordination polymer nanocrystals using differential optical resonator. Opt Express 2014; 22:11061-11069. [PMID: 24921804 DOI: 10.1364/oe.22.011061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The enhancement of light-matter coupling when light is confined to wavelength scale volumes is useful both for studying small sample volumes and increasing the overall sensing ability. At these length scales, nonradiative interactions are of key interest to which near-field optical techniques may reveal new phenomena facilitating next-generation material functionalities and applications. Efforts to develop novel chemical or biological sensors using metamaterials have yielded innovative ideas in the optical and terahertz frequency range whereby the spatially integrated response over a resonator structure is monitored via the re-radiated or leaked light. But although terahertz waves generally exhibit distinctive response in chemical molecules or biological tissue, there is little absorption for subwavelength size sample and therefore poor image contrast. Here, we introduce a method that spatially resolves the differential near-field phase response of the entire resonator as a spectral fingerprint. By simultaneously probing two metallic ring resonators, where one loaded with the sample of interest, the differential phase response is able to resolve the presence of guest molecules (e.g. methanol) as they are adsorbed or released within the pores of a prototypical porous coordination polymer.
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Kakimoto N, Shimamoto H, Chindasombatjaroen J, Tsujimoto T, Tomita S, Hasegawa Y, Murakami S, Furukawa S. Comparison of the T2 relaxation time of the temporomandibular joint articular disk between patients with temporomandibular disorders and asymptomatic volunteers. AJNR Am J Neuroradiol 2014; 35:1412-7. [PMID: 24742804 DOI: 10.3174/ajnr.a3880] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [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 T2 relaxation time is a quantitative MR imaging parameter used to detect degenerated cartilage in the knee and lumbar intervertebral disks. We measured the T2 relaxation time of the articular disk of the temporomandibular joint in patients with temporomandibular disorders and asymptomatic volunteers to demonstrate an association between T2 relaxation time and temporomandibular disorder MR imaging findings. MATERIALS AND METHODS One hundred forty-four patients with temporomandibular disorders and 17 volunteers were enrolled in this study. An 8-echo spin-echo sequence for measuring the T2 relaxation times was performed in the closed mouth position, and the T2 relaxation time of the entire articular disk was measured. Patients were classified according to the articular disk location and function, articular disk configuration, presence of joint effusion, osteoarthritis, and bone marrow abnormalities. RESULTS The T2 relaxation time of the entire articular disk was 29.3 ± 3.8 ms in the volunteer group and 30.7 ± 5.1 ms in the patient group (P = .177). When subgroups were analyzed, however, the T2 relaxation times of the entire articular disk in the anterior disk displacement without reduction group, the marked or extensive joint effusion group, the osteoarthritis-positive group, and the bone marrow abnormality-positive group were significantly longer than those in the volunteer group (P < .05). CONCLUSIONS The T2 relaxation times of the articular disk of the temporomandibular joint in patients with progressive temporomandibular disorders were longer than those of healthy volunteers.
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Affiliation(s)
- N Kakimoto
- From the Department of Oral and Maxillofacial Radiology (N.K., H.S., T.T., S.T., S.M., S.F.), Osaka University Graduate School of Dentistry, Osaka, Japan
| | - H Shimamoto
- From the Department of Oral and Maxillofacial Radiology (N.K., H.S., T.T., S.T., S.M., S.F.), Osaka University Graduate School of Dentistry, Osaka, Japan
| | - J Chindasombatjaroen
- Department of Oral and Maxillofacial Radiology (J.C.), Faculty of Dentistry, Mahidol University, Bangkok, Thailand
| | - T Tsujimoto
- From the Department of Oral and Maxillofacial Radiology (N.K., H.S., T.T., S.T., S.M., S.F.), Osaka University Graduate School of Dentistry, Osaka, Japan
| | - S Tomita
- From the Department of Oral and Maxillofacial Radiology (N.K., H.S., T.T., S.T., S.M., S.F.), Osaka University Graduate School of Dentistry, Osaka, Japan
| | - Y Hasegawa
- Department of Dentistry and Oral Surgery (Y.H.), Hyogo College of Medicine, Hyogo, Japan
| | - S Murakami
- From the Department of Oral and Maxillofacial Radiology (N.K., H.S., T.T., S.T., S.M., S.F.), Osaka University Graduate School of Dentistry, Osaka, Japan
| | - S Furukawa
- From the Department of Oral and Maxillofacial Radiology (N.K., H.S., T.T., S.T., S.M., S.F.), Osaka University Graduate School of Dentistry, Osaka, Japan
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Shirane K, Kuji R, Tareyanagi C, Sato T, Kobayashi Y, Furukawa S, Murata T, Kubota S, Ishikawa Y, Segawa K, Furukawa K. Gene expression levels of 4-galactosyltransferase 5 correlate with the tumorigenic potentials of B16-F10 mouse melanoma cells. Glycobiology 2014; 24:532-41. [DOI: 10.1093/glycob/cwu021] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Furukawa S, Eguchi E, Maruyama K, Tanigawa T. Nocturnal intermittent hypoxia as an associated risk factor for microalbuminuria in women with type 2 diabetes mellitus. Sleep Med 2013. [DOI: 10.1016/j.sleep.2013.11.291] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Uchiyama Y, Matsumoto K, Murakami S, Kanesaki T, Matsumoto A, Kishino M, Furukawa S. MRI in a case of osteosarcoma in the temporomandibular joint. Dentomaxillofac Radiol 2013; 43:20130280. [PMID: 24247589 DOI: 10.1259/dmfr.20130280] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Osteosarcoma of the temporomandibular joint (TMJ) is rare. We report a case of osteosarcoma in the TMJ of a 62-year-old female, pre-operatively diagnosed to have a benign tumour, and discuss the usefulness and limits of MRI using a TMJ coil as a diagnosis.
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Affiliation(s)
- Y Uchiyama
- Department of Oral and Maxillofacial Radiology, Osaka University Graduate School of Dentistry, Osaka, Japan
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Hirano S, Shimada H, Higuchi M, Ikoma Y, Shinotoh H, Furukawa S, Moriguchi S, Eguchi Y, Nogami T, Nagashima T, Suzuki M, Takahata K, Sasaki T, Kodaka F, Fujiwara H, Kimura Y, Yamada M, Maruyama M, Takano H, Zhang MR, Kuwabara S, Ito H, Suhara T. In vivo visualization of tau pathology in Alzheimer's disease patients by [11c]PBB3-PET. J Neurol Sci 2013. [DOI: 10.1016/j.jns.2013.07.1190] [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: 11/17/2022]
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Furukawa S, Wei L, Krams SM, Esquivel CO, Martinez OM. PI3Kδ inhibition augments the efficacy of rapamycin in suppressing proliferation of Epstein-Barr virus (EBV)+ B cell lymphomas. Am J Transplant 2013; 13:2035-43. [PMID: 23841834 PMCID: PMC4076428 DOI: 10.1111/ajt.12328] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Revised: 04/25/2013] [Accepted: 05/06/2013] [Indexed: 01/25/2023]
Abstract
Posttransplant lymphoproliferative disorder (PTLD) continues to be a devastating and potentially life-threatening complication in organ transplant recipients. PTLD is associated with EBV infection and can result in malignant B cell lymphomas. Here we demonstrate that the PI3K/Akt/mTOR pathway is highly activated in EBV+ B cell lymphoma lines derived from patients with PTLD. Treatment with the mTORC1 inhibitor Rapamycin (RAPA) partially inhibited the proliferation of EBV+ B cell lines. Resistance to RAPA treatment correlated with high levels of Akt phosphorylation. An mTORC1/2 inhibitor and a PI3K/mTOR dual inhibitor suppressed Akt phosphorylation and showed a greater anti-proliferative effect on EBV+ B lymphoma lines compared to RAPA. EBV+ B cell lymphoma lines expressed high levels of PI3Kδ. We demonstrate that PI3Kδ is responsible for Akt activation in EBV+ B cell lymphomas, and that selective inhibition of PI3Kδ by either siRNA, or a small molecule inhibitor, augmented the anti-proliferative effect of RAPA on EBV+ B cell lymphomas. These results suggest that PI3Kδ is a novel, potential therapeutic target for the treatment of EBV-associated PTLD and that combined blockade of PI3Kδ and mTOR provides increased efficacy in inhibiting proliferation of EBV+ B cell lymphomas.
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Affiliation(s)
- S Furukawa
- Division of Abdominal Transplantation, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
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Kanaya S, Fujisaki W, Nishida S, Furukawa S, Yokosawa K. Comparisons of temporal frequency limits for cross-attribute binding tasks in vision and audition. J Vis 2013. [DOI: 10.1167/13.9.885] [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] Open
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41
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Komatsu Y, Takei M, Yuki S, Fuse N, Furukawa S, Kato T, Takeda H, Kato M, Asaka M. Treatment of a Gilbert's Syndrome Patient with Irinotecan, Leucovorin and 5-Fluorouracil. J Chemother 2013; 17:111-4. [PMID: 15828453 DOI: 10.1179/joc.2005.17.1.111] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
The patient was an elderly male who had radical surgery for sigmoid cancer in 2001. Owing to metastasis of his cancer to the left supraclavicular lymph nodes in 2002, the patient was admitted to our hospital for systemic chemotherapy. We started treatment with irinotecan, leucovorin, 5-fluorouracil (IFL). After administering 100 mg/m2 of irinotecan, 250 mg/m2 leucovorin and 600 mg/m2 5-fluorouracil to the patient on day 1, grade 3 leukopenia developed rapidly and grade 4 thrombocytopenia was observed on day 5. We excluded irinotecan from the medication and continued the administration of 5-fluorouracil and leucovorin, but his tumors had not been reduced sufficiently. Based on some examination results, we assumed that the patient had Gilbert's syndrome and that the severe side effects that occurred were due to prolongation of SN38 metabolism. We again administered irinotecan but at reduced dose (25 mg/m2). Four courses of this modified IFL were administered safely and the response was favorable.
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Affiliation(s)
- Y Komatsu
- Dept of Gastroenterology, Hokkaido University School of Medicine, Sapporo-city, Hokkaido, Japan.
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Sakata Y, Furukawa S, Kondo M, Hirai K, Horike N, Takashima Y, Uehara H, Louvain N, Meilikhov M, Tsuruoka T, Isoda S, Kosaka W, Sakata O, Kitagawa S. Shape-Memory Nanopores Induced in Coordination Frameworks by Crystal Downsizing. Science 2013; 339:193-6. [DOI: 10.1126/science.1231451] [Citation(s) in RCA: 409] [Impact Index Per Article: 37.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Furukawa S, Naito K, Sugiura K. 187 EXPRESSION AND REGULATION OF THE FIBROBLAST GROWTH FACTOR GENE FAMILY DURING MOUSE FOLLICULAR DEVELOPMENT. Reprod Fertil Dev 2013. [DOI: 10.1071/rdv25n1ab187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Recent studies have shown the critical roles of fibroblast growth factors (FGFs), including FGF8 produced by oocytes, in regulating follicular development. However, the expression and regulation of the FGF gene family, which consists of 22 ligands and 4 receptors, in the mouse ovary have not been well understood. The aim of the present study was to assess the expression and regulation of FGF ligands and receptors in the mouse ovary. Transcript levels of FGF ligands and receptors in immature (3-week-old) and adult (7- to 8-week-old) ovaries as well as other tissues of B6/DBA2F1 mice were analysed with RT-PCR. Furthermore, expression levels of FGF receptors in cumulus cells (CC) and mural granulosa cells (MG) before and after equine chorionic gonadotropin (eCG) treatment were determined with RT-quantitative PCR. Among 21 FGF ligands examined, 12 and 9 transcripts were detectable in immature and adult ovaries, respectively. More FGF ligands were detected in ovary, testis, heart, and brain compared to other tissues, including liver and spleen. Transcripts of all 4 FGF receptors (Fgfr1–4) were detectable in both immature and adult ovaries. Expression levels of Fgfr1 and Fgfr2 were significantly higher in MG compared with CC before and after the eCG treatment. Levels of Fgfr4 were comparable between MG and CC before the eCG treatment, but became significantly different with higher expression levels in MG after the eCG treatment. Fgfr3 transcripts were barely detectable in CC and MG. Overall levels of Fgfr1 in granulosa cells (CC and MG) were downregulated by eCG treatment, whereas those of Fgfr2 and Fgfr4 were upregulated. In summary, many FGF ligands are expressed, at least in mRNA levels, in mouse ovaries. Moreover, the expression levels of Fgfr transcripts in granulosa cells are dynamically regulated during follicular development.
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Kubonoya K, Furukawa S, Machida T, Miyakawa T, Hisamatsu M, Sekine K, Takemura H, Sato K. W280 A 30-YEAR CASE STUDY BASED ON 64,528 BREECH PRESENTATIONS; CHANGES IN DELIVERY MODE AND INFANT MORTALITY. Int J Gynaecol Obstet 2012. [DOI: 10.1016/s0020-7292(12)62003-7] [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: 10/27/2022]
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Mukuda H, Furukawa S, Kinouchi H, Yashima M, Kitaoka Y, Shirage PM, Eisaki H, Iyo A. High-Tc nodeless s±-wave superconductivity in (Y,La)FeAsO(1-y) with Tc=50 K:75As-NMR study. Phys Rev Lett 2012; 109:157001. [PMID: 23102353 DOI: 10.1103/physrevlett.109.157001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2012] [Indexed: 06/01/2023]
Abstract
We report on an (75)As-NMR study on the Fe-pnictide high-T(c) superconductor Y(0.95)La(0.05)FeAsO(1-y) (Y(0.95)La(0.05)1111) with T(c)=50 K that includes no magnetic rare-earth elements. The measurement of the nuclear-spin lattice-relaxation rate (75)(1/T(1)) has revealed that the nodeless bulk superconductivity takes place at T(c)=50 K while antiferromagnetic spin fluctuations develop moderately in the normal state. These features are consistently described by the multiple fully gapped s(±)-wave model based on the Fermi-surface nesting. Incorporating the theory based on band calculations, we propose that the reason that T(c)=50 K in Y(0.95)La(0.05)1111 is larger than T(c)=28 K in La1111 is that the Fermi-surface multiplicity is maximized, and hence the Fermi-surface nesting condition is better than that in La1111.
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Affiliation(s)
- H Mukuda
- Graduate School of Engineering Science, Osaka University, Osaka 560-8531, Japan.
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Azemoto N, Kumagi T, Yokota T, Kuroda T, Koizumi M, Yamanishi H, Soga Y, Furukawa S, Abe M, Ikeda Y, Hiasa Y, Matsuura B, Watanabe J, Kushihata F, Onji M. An unusual case of subclinical diffuse glucagonoma coexisting with two nodules in the pancreas: characteristic features on computed tomography. Clin Res Hepatol Gastroenterol 2012; 36:e43-7. [PMID: 22239827 DOI: 10.1016/j.clinre.2011.12.003] [Citation(s) in RCA: 4] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2011] [Revised: 12/02/2011] [Accepted: 12/05/2011] [Indexed: 02/04/2023]
Abstract
A lesion was discovered in the tail of the pancreas by ultrasonography performed during a health checkup for a 59-year-old Japanese man. Abdominal contrast-enhanced computed tomography (CE-CT) revealed strong enhancement in a 4-cm tumor in the pancreatic tail and in a 1-cm tumor in the pancreatic body. Serum glucagon levels were elevated to 54,405 pg/mL and a preoperative diagnosis of glucagonoma was made. The pancreatic tail and spleen were resected en bloc, along with a protruding tumor in the pancreatic body. However, histopathological evaluation revealed diffuse glucagonoma throughout the pancreas. When we retrospectively reviewed abdominal CE-CT after the operation, the entire pancreas was seen to be enlarged and diffusely enhanced by strong spots. Immunohistochemical examination using anti-CD31 demonstrated rich microvessels in two solid glucagonomas as well as microglucagonoma throughout the entire pancreas, indicating hypervascularity. Enlarged pancreas and diffuse enhancement of the pancreas by strong spots may be characteristic features of diffuse glucagonoma on abdominal CE-CT.
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Affiliation(s)
- N Azemoto
- Endoscopy Center, Ehime University Hospital, Shitsukawa, Toon, Ehime, Japan
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Akiyama H, Yoshida K, Shimizutani K, Yamazaki H, Koizumi M, Yoshioka Y, Kakimoto N, Murakami S, Furukawa S, Ogawa K. PO-369 COMPARISON OF 60 GY AND 54 GY IN HIGH-DOSE-RATE INTERSTITIAL BRACHYTHERAPY FOR EARLY ORAL TONGUE CANCER. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)72335-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Shimamoto H, Chindasombatjaroen J, Kakimoto N, Kishino M, Murakami S, Furukawa S. Perineural spread of adenoid cystic carcinoma in the oral and maxillofacial regions: evaluation with contrast-enhanced CT and MRI. Dentomaxillofac Radiol 2012; 41:143-51. [PMID: 22301639 DOI: 10.1259/dmfr/21825064] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES The objective of this study was to compare the accuracy of contrast-enhanced CT (CECT) and contrast-enhanced MRI (CEMRI) in the detection of perineural spread (PNS) of adenoid cystic carcinoma (ACC) in the oral and maxillofacial regions. METHODS This study consisted of 13 ACCs from 13 patients, all of which were histopathologically diagnosed. Both CECT and CEMRI were performed in all patients before the treatment. The images of each patient were retrospectively evaluated for the detection of PNS. The definitions of PNS included abnormal density/signal intensity, contrast enhancement or widening of the pterygopalatine fossa, palatine foramen, incisive canal, mandibular foramen and mandibular canal, and enlargement or excessive contrast enhancement of a nerve. RESULTS 11 out of 13 cases were proven to exhibit PNS histopathologically. 8 of the 11 cases for which PNS was histopathologically proven exhibited PNS on MR images. Six of the eight cases for which PNS was exhibited on MR images also exhibited PNS on CT images. The sensitivity, specificity and accuracy for the detection of PNS were 55%, 100% and 62% on CT images and 73%, 100% and 77% on MR images, respectively. Although the accuracy of PNS on MR images was slightly superior to that on CT images, there were no statistically significant differences between the detection of PNS on CT images and on MR images. CONCLUSIONS CT and MR images are equally useful for the detection of PNS of ACC in the oral and maxillofacial regions.
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Affiliation(s)
- H Shimamoto
- Department of Oral and Maxillofacial Radiology, Osaka Univeristy Graduate School of Dentistry, Japan.
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Hasegawa S, Ichiyama T, Sonaka I, Ohsaki A, Okada S, Wakiguchi H, Kudo K, Kittaka S, Hara M, Furukawa S. Cysteine, histidine and glycine exhibit anti-inflammatory effects in human coronary arterial endothelial cells. Clin Exp Immunol 2012; 167:269-74. [PMID: 22236003 DOI: 10.1111/j.1365-2249.2011.04519.x] [Citation(s) in RCA: 101] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
The activation of nuclear factor-kappa B (NF-κB) in vascular endothelial cells may be involved in vascular pathogeneses such as vasculitis or atherosclerosis. Recently, it has been reported that some amino acids exhibit anti-inflammatory effects. We investigated the inhibitory effects of a panel of amino acids on cytokine production or expression of adhesion molecules that are involved in inflammatory diseases in various cell types. The activation of NF-κB was determined in human coronary arterial endothelial cells (HCAECs) because NF-κB modulates the production of many cytokines and the expression of adhesion molecules. We examined the inhibitory effects of the amino acids cysteine, histidine and glycine on the induction of NF-κB activation, expression of CD62E (E-selectin) and the production of interleukin (IL)-6 in HCAECs stimulated with tumour necrosis factor (TNF)-α. Cysteine, histidine and glycine significantly reduced NF-κB activation and inhibitor κBα (IκBα) degradation in HCAECs stimulated with TNF-α. Additionally, all the amino acids inhibited the expression of E-selectin and the production of IL-6 in HCAECs, and the effects of cysteine were the most significant. Our results show that glycine, histidine and cysteine can inhibit NF-κB activation, IκBα degradation, CD62E expression and IL-6 production in HCAECs, suggesting that these amino acids may exhibit anti-inflammatory effects during endothelial inflammation.
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Affiliation(s)
- S Hasegawa
- Department of Pediatrics, Yamaguchi University Graduate School of Medicine, Ube, Japan.
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Jeong J, Goremychkin EA, Guidi T, Nakajima K, Jeon GS, Kim SA, Furukawa S, Kim YB, Lee S, Kiryukhin V, Cheong SW, Park JG. Spin wave measurements over the full Brillouin zone of multiferroic BiFeO3. Phys Rev Lett 2012; 108:077202. [PMID: 22401246 DOI: 10.1103/physrevlett.108.077202] [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] [Subscribe] [Scholar Register] [Received: 11/01/2011] [Indexed: 05/31/2023]
Abstract
Using the inelastic neutron scattering technique, we measured the spin wave dispersion over the entire Brillouin zone of room temperature multiferroic BiFeO(3) single crystals with magnetic excitations extending to as high as 72.5 meV. The full spin waves can be explained by a simple Heisenberg Hamiltonian with a nearest-neighbor exchange interaction (J=4.38 meV), a next-nearest-neighbor exchange interaction (J'=0.15 meV), and a Dzyaloshinskii-Moriya-like term (D=0.107 meV). This simple Hamiltonian determined, for the first time, for BiFeO(3) provides a fundamental ingredient for understanding the novel magnetic properties of BiFeO(3).
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Affiliation(s)
- Jaehong Jeong
- FPRD Department of Physics & Astronomy, Center for Strongly Correlated Materials Research, Seoul National University, Seoul, Korea
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