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Nagashima D, Ishibashi Y, Kawaguchi S, Furukawa M, Toho M, Ohno M, Nitto T, Izumo N. Human Recombinant Lactoferrin Promotes Differentiation and Calcification on MC3T3-E1 Cells. Pharmaceutics 2022; 15:pharmaceutics15010060. [PMID: 36678689 PMCID: PMC9861834 DOI: 10.3390/pharmaceutics15010060] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 12/15/2022] [Accepted: 12/22/2022] [Indexed: 12/29/2022] Open
Abstract
Lactoferrin (LF), known to be present in mammalian milk, has been reported to promote the proliferation of osteoblasts and suppress bone resorption by affecting osteoclasts. However, the mechanisms underlying the effects of human sources LF on osteoblast differentiation have not yet been elucidated, and almost studies have used LF from bovine sources. The presented study aimed to characterize the molecular mechanisms of bovine lactoferrin (IF-I) and human recombinant lactoferrin (LF-II) on MC3T3-E1 pre-osteoblast cells. MC3T3-E1 cells were treated with LF, ascorbic acid, and β-glycerophosphate (β-GP). Cell proliferation was analyzed using the MTT assay. Alkaline phosphatase activation and osteopontin expression levels were evaluated via cell staining and immunocytochemistry. The differentiation markers were examined using quantitative real-time PCR. The cell viability assay showed the treatment of 100 μg/mL LF significantly increased; however, it was suppressed by the simultaneous treatment of ascorbic acid and β-GP. Alizarin red staining showed that the 100 μg/mL treatment of LF enhanced calcification. Quantitative real-time PCR showed a significant increase in osterix expression. The results suggest that treatment with both LFs enhanced MC3T3-E1 cell differentiation and promoted calcification. The mechanisms of calcification suggest that LFs are affected by an increase in osterix and osteocalcin mRNA levels.
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Affiliation(s)
- Daichi Nagashima
- General Health Medical Research Center, Yokohama University of Pharmacy, Yokohama 245-0066, Japan
- Pharmaceutical Education Center, Yokohama University of Pharmacy, Yokohama 245-0066, Japan
| | - Yukiko Ishibashi
- Department of Biochemistry, Yokohama University of Pharmacy, Yokohama 245-0066, Japan
| | - Sachiko Kawaguchi
- Laboratory of Pharmacotherapy, Yokohama University of Pharmacy, Yokohama 245-0066, Japan
| | - Megumi Furukawa
- Pharmaceutical Education Center, Yokohama University of Pharmacy, Yokohama 245-0066, Japan
| | - Masahiro Toho
- Laboratory of Pharmacotherapy, Yokohama University of Pharmacy, Yokohama 245-0066, Japan
| | | | - Takeaki Nitto
- Laboratory of Pharmacotherapy, Yokohama University of Pharmacy, Yokohama 245-0066, Japan
| | - Nobuo Izumo
- General Health Medical Research Center, Yokohama University of Pharmacy, Yokohama 245-0066, Japan
- Laboratory of Pharmacotherapy, Yokohama University of Pharmacy, Yokohama 245-0066, Japan
- Correspondence: ; Tel.: +81-45-859-1300
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2
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Nocerino E, Witteveen C, Kobayashi S, Forslund OK, Matsubara N, Zubayer A, Mazza F, Kawaguchi S, Hoshikawa A, Umegaki I, Sugiyama J, Yoshimura K, Sassa Y, von Rohr FO, Månsson M. Nuclear and magnetic spin structure of the antiferromagnetic triangular lattice compound LiCrTe 2 investigated by [Formula: see text]SR, neutron and X-ray diffraction. Sci Rep 2022; 12:21657. [PMID: 36522382 PMCID: PMC9755140 DOI: 10.1038/s41598-022-25921-9] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 12/07/2022] [Indexed: 12/23/2022] Open
Abstract
Two-dimensional (2D) triangular lattice antiferromagnets (2D-TLA) often manifest intriguing physical and technological properties, due to the strong interplay between lattice geometry and electronic properties. The recently synthesized 2-dimensional transition metal dichalcogenide LiCrTe[Formula: see text], being a 2D-TLA, enriched the range of materials which can present such properties. In this work, muon spin rotation ([Formula: see text]SR) and neutron powder diffraction (NPD) have been utilized to reveal the true magnetic nature and ground state of LiCrTe[Formula: see text]. From high-resolution NPD the magnetic spin order at base-temperature is not, as previously suggested, helical, but rather collinear antiferromagnetic (AFM) with ferromagnetic (FM) spin coupling within the ab-plane and AFM coupling along the c-axis. The value if the ordered magnetic Cr moment is established as [Formula: see text]. From detailed [Formula: see text]SR measurements we observe an AFM ordering temperature [Formula: see text] K. This value is remarkably higher than the one previously reported by magnetic bulk measurements. From [Formula: see text]SR we are able to extract the magnetic order parameter, whose critical exponent allows us to categorize LiCrTe[Formula: see text] in the 3D Heisenberg AFM universality class. Finally, by combining our magnetic studies with high-resolution synchrotron X-ray diffraction (XRD), we find a clear coupling between the nuclear and magnetic spin lattices. This suggests the possibility for a strong magnon-phonon coupling, similar to what has been previously observed in the closely related compound LiCrO[Formula: see text].
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Affiliation(s)
- E. Nocerino
- KTH Royal Institute of Technology, Department of Applied Physics, Alba Nova University Center, 114 21 Stockholm, Sweden
| | - C. Witteveen
- Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest-Ansermet, 1211 Geneva 4, Switzerland
- Department of Physics, University of Zürich, Winterthurerstr. 190, 8057 Zurich, Switzerland
| | - S. Kobayashi
- Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Kouto, Sayo, 679-5198 Japan
| | - O. K. Forslund
- Department of Physics, Chalmers University of Technology, 412 96 Göteborg, Sweden
| | - N. Matsubara
- KTH Royal Institute of Technology, Department of Applied Physics, Alba Nova University Center, 114 21 Stockholm, Sweden
| | - A. Zubayer
- Department of Physics, Chemistry and Biology (IFM), Linköping University, 581 83 Linköping, Sweden
| | - F. Mazza
- Insitute of Solid State Physics, TU Wien, Wiedner Haupstraße 8-10, 1040 Vienna, Austria
| | - S. Kawaguchi
- Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Kouto, Sayo, 679-5198 Japan
| | - A. Hoshikawa
- Frontier Research Center for Applied Atomic Sciences, Ibaraki University, 162-1 Shirakata, Tokai, Ibaraki 319-1106 Japan
| | - I. Umegaki
- Muon Science Laboratory, Institute of Materials Structure Science, KEK, Tokai, Ibaraki 319-1106 Japan
| | - J. Sugiyama
- Neutron Science and Technology Center, Comprehensive Research Organization for Science and Society (CROSS), Tokai, Ibaraki 319-1106 Japan
- Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195 Japan
| | - K. Yoshimura
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto, 606-8502 Japan
| | - Y. Sassa
- Department of Physics, Chalmers University of Technology, 412 96 Göteborg, Sweden
| | - F. O. von Rohr
- Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest-Ansermet, 1211 Geneva 4, Switzerland
| | - M. Månsson
- KTH Royal Institute of Technology, Department of Applied Physics, Alba Nova University Center, 114 21 Stockholm, Sweden
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3
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Handa M, Takiuchi T, Kawaguchi S, Komukai S, Kitamura T, Miyake T, Ohara Y, Doshida M, Takeuchi T, Matsubayashi H, Ishikawa T, Kimura T. O-130 Reproductive outcomes of normal ovarian reserve patients after progestin-primed ovarian stimulation with chlormadinone acetate vs GnRH antagonist: A retrospective study with inverse-probability-of-treatment weighting. Hum Reprod 2022. [DOI: 10.1093/humrep/deac105.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Study question
To evaluate the effectiveness of chlormadinone acetate (CMA) for preventing premature LH surge in patients with normal ovarian reserve compared to cetrorelix.
Summary answer
In progestin-primed ovarian stimulation (PPOS) than GnRH antagonist (GnRH-ant), the incidence of premature LH surge was significantly lower, without significant difference in oocyte maturation rate.
What is known already
The GnRH-ant protocol is one of the conventional protocols which has some disadvantages including increased premature LH surge rate and cancelation rate. In recent years, the PPOS protocol has attracted attention as a new ovarian stimulation using progestin as an alternative to GnRH analog for suppressing a premature LH surge, however its efficacy is still controversial. In addition, many studies have investigated the reproductive outcomes of PPOS using medroxy-progesterone acetate or dydrogesterone; however, there are few reports of CMA, an oral progestin, which is inexpensive and widely used in Japan.
Study design, size, duration
This retrospective cohort study was performed in a reproduction center between March 2018 and October 2020 which included 977 Japanese patients with normal ovarian reserve undergoing PPOS with CMA (n = 299), or GnRH antagonist (GnRH-ant) with cetrorelix (n = 608) in their first IVF cycle at the reproduction center. In subgroup analysis, pregnancy outcomes after frozen embryo transfers (FET) between PPOS (n = 284) and GnRH-ant (n = 579) were also compared.
Participants/materials, setting, methods
The inclusion criteria were patients aged < 40 years and AMH ≧ 1.1 ng/mL, who underwent autologous oocyte retrieval in their first IVF cycle with freeze-all strategy. The primary outcome was the incidence of premature LH surge, the secondary outcomes was oocyte maturation rate. To reduce the impact of treatment bias and potential confounding factors, we conducted logistic regression models with inverse-probability-of-treatment weighting (IPTW).
Main results and the role of chance
After IPTW, baseline clinical data were well-balanced between the two groups, including age, AMH, BMI, the duration, type, and cause of infertility, antral follicle count, the history of recurrent spontaneous abortion, and previous IVF attempts. The premature LH surge rate was significantly lower with PPOS (3.1%) compared to GnRH-ant (20.1%) (odds ratio, 0.21; 95% confidence interval, 0.11–0.36). No significant differences were found in total gonadotropin dose (2400IU for PPOS vs 2400IU for GnRH-ant, p = 0.136), the number of oocyte retrieval (n = 15 vs n = 15, p = 0.484), oocyte maturation rate (78.8% vs 77.8%, p = 0.275), fertilization rate (73.0% vs 72.0%, p = 0.412), viable embryo rate per oocyte retrieval (40% vs 40%, p = 0.890), and good quality blastocyst rate (72.0% vs 69.6%, p = 0.092). However, the good quality day-3 embryo rate was significantly lower with PPOS (37.2% vs 49.1%, p < 0.05). There were no differences in the incidence of moderate-to-severe OHSS (0.3% vs 0.7%, p = 0.481). In FET cycles, the pregnancy outcomes, such as implantation rate (43.1 % vs 51.9 %, p = 0.013) and clinical pregnancy rate (46.5% vs 54.7%, p = 0.027) were significantly lower with PPOS, however, no significant differences were found in ongoing pregnancy rate (75.6% vs 80.5%, p = 0.325), and live birth rate (72.4% vs 79.5 %, p = 0.142).
Limitations, reasons for caution
This was a retrospective cohort study conducted in a single center. The participants in this study were limited to Japanese ethnicity. The results need to be validated across different centers and other ethnicities.
Wider implications of the findings
This is the first report assessing the reproductive outcomes on PPOS using CMA, widely used in Japan. The PPOS with CMA significantly suppressed the premature LH surge rate compared to GnRH-ant protocol, without decrease in oocyte maturation rate.
Trial registration number
N/A
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Affiliation(s)
- M Handa
- Osaka university Graduate School of Medicine, Obstetrics and Gynecology , Osaka, Japan
| | - T Takiuchi
- Osaka university Graduate School of Medicine, Obstetrics and Gynecology , Osaka, Japan
- Osaka university Graduate School of Medicine, Clinical Genomics , Osaka, Japan
| | - S Kawaguchi
- Osaka university Graduate School of Medicine, Division of Biomedical Statistics- Integrated Medicine , Osaka, Japan
| | - S Komukai
- Osaka university Graduate School of Medicine, Division of Biomedical Statistics- Integrated Medicine , Osaka, Japan
| | - T Kitamura
- Osaka university Graduate School of Medicine, Division of Environmental Medicine and Population Services- Social and Environmental Medicine , Osaka, Japan
| | - T Miyake
- Osaka university Graduate School of Medicine, Obstetrics and Gynecology , Osaka, Japan
| | - Y Ohara
- Reproduction Clinic Osaka, Reproductive Medicine , Osaka, Japan
| | - M Doshida
- Reproduction Clinic Tokyo, Reproductive Medicine , Tokyo, Japan
| | - T Takeuchi
- Reproduction Clinic Tokyo, Reproductive Medicine , Tokyo, Japan
| | - H Matsubayashi
- Reproduction Clinic Osaka, Reproductive Medicine , Osaka, Japan
- Reproduction Clinic Tokyo, Reproductive Medicine , Tokyo, Japan
| | - T Ishikawa
- Reproduction Clinic Osaka, Reproductive Medicine , Osaka, Japan
- Reproduction Clinic Tokyo, Reproductive Medicine , Tokyo, Japan
| | - T Kimura
- Osaka university Graduate School of Medicine, Obstetrics and Gynecology , Osaka, Japan
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Cavan EL, Belcher A, Atkinson A, Hill SL, Kawaguchi S, McCormack S, Meyer B, Nicol S, Ratnarajah L, Schmidt K, Steinberg DK, Tarling GA, Boyd PW. The importance of Antarctic krill in biogeochemical cycles. Nat Commun 2019; 10:4742. [PMID: 31628346 PMCID: PMC6800442 DOI: 10.1038/s41467-019-12668-7] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [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] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 09/25/2019] [Indexed: 02/02/2023] Open
Abstract
Antarctic krill (Euphausia superba) are swarming, oceanic crustaceans, up to two inches long, and best known as prey for whales and penguins - but they have another important role. With their large size, high biomass and daily vertical migrations they transport and transform essential nutrients, stimulate primary productivity and influence the carbon sink. Antarctic krill are also fished by the Southern Ocean's largest fishery. Yet how krill fishing impacts nutrient fertilisation and the carbon sink in the Southern Ocean is poorly understood. Our synthesis shows fishery management should consider the influential biogeochemical role of both adult and larval Antarctic krill.
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Affiliation(s)
- E L Cavan
- Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, TAS, Australia.
- Department of Life Sciences, Imperial College London, Silwood Park Campus, Buckhurst Road, Ascot, Berkshire, SL5 7PY, UK.
| | - A Belcher
- British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Rd, Cambridge, CB3 0ET, UK
| | - A Atkinson
- Plymouth Marine Laboratory, Prospect Place, The Hoe, Plymouth, PL1 3DH, UK
| | - S L Hill
- British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Rd, Cambridge, CB3 0ET, UK
| | - S Kawaguchi
- Australian Antarctic Division, Kingston, TAS, Australia
| | - S McCormack
- Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, TAS, Australia
- Antarctic Climate and Ecosystems CRC, University of Tasmania, Hobart, TAS, Australia
| | - B Meyer
- Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany
- Institute for Chemistry and Biology of the Marine Environment, University of Oldenburg, Carl-von-Ossietzky-Straße 9-11, 26111, Oldenburg, Germany
- Helmholtz Institute for Functional Marine Biodiversity at the University of Oldenburg, Ammerländer Heerstrasse 231, Oldenburg, 26129, Germany
| | - S Nicol
- Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, TAS, Australia
| | - L Ratnarajah
- Department of Earth, Ocean and Ecological Sciences, University of Liverpool, Liverpool, UK
| | - K Schmidt
- School of Geography, Earth and Environmental Science, University of Plymouth, Plymouth, UK
| | - D K Steinberg
- Virginia Institute of Marine Science, College of William & Mary, Williamsburg, VA, USA
| | - G A Tarling
- British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Rd, Cambridge, CB3 0ET, UK
| | - P W Boyd
- Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, TAS, Australia
- Antarctic Climate and Ecosystems CRC, University of Tasmania, Hobart, TAS, Australia
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5
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Xiang Z, Kasahara Y, Asaba T, Lawson B, Tinsman C, Chen L, Sugimoto K, Kawaguchi S, Sato Y, Li G, Yao S, Chen YL, Iga F, Singleton J, Matsuda Y, Li L. Quantum oscillations of electrical resistivity in an insulator. Science 2018; 362:65-69. [PMID: 30166438 DOI: 10.1126/science.aap9607] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Accepted: 08/20/2018] [Indexed: 11/02/2022]
Abstract
In metals, orbital motions of conduction electrons on the Fermi surface are quantized in magnetic fields, which is manifested by quantum oscillations in electrical resistivity. This Landau quantization is generally absent in insulators. Here, we report a notable exception in an insulator-ytterbium dodecaboride (YbB12). The resistivity of YbB12, which is of a much larger magnitude than the resistivity in metals, exhibits distinct quantum oscillations. These unconventional oscillations arise from the insulating bulk, even though the temperature dependence of the oscillation amplitude follows the conventional Fermi liquid theory of metals with a large effective mass. Quantum oscillations in the magnetic torque are also observed, albeit with a lighter effective mass.
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Affiliation(s)
- Z Xiang
- Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Y Kasahara
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - T Asaba
- Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA
| | - B Lawson
- Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA.,Faculty of Applied Science, Université Chrétienne Bilingue du Congo, Beni, North-Kivu, Democratic Republic of Congo
| | - C Tinsman
- Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Lu Chen
- Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA
| | - K Sugimoto
- Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198, Japan
| | - S Kawaguchi
- Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198, Japan
| | - Y Sato
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - G Li
- Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA
| | - S Yao
- National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
| | - Y L Chen
- Department of Physics, Clarendon Laboratory, University of Oxford, Oxford OX1 3PU, UK
| | - F Iga
- College of Science, Ibaraki University, Mito 310-8512, Japan
| | - John Singleton
- National High Magnetic Field Laboratory, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
| | - Y Matsuda
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan.
| | - Lu Li
- Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA.
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6
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Ishii Y, Kawaguchi S, Asai K, Mori S. Incommensurate phase of the stuffed tridymite derivative BaSrFe4O8. J SOLID STATE CHEM 2018. [DOI: 10.1016/j.jssc.2018.06.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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7
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Kawaguchi S, Okada M, Fujita S, Hasebe N. P3740Myocardial metabolic regulation by the beta-3 adrenergic receptor in sepsis. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p3740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- S Kawaguchi
- Asahikawa Medical University, Emergency Medicine, Asahikawa, Japan
| | - M Okada
- Asahikawa Medical University, Emergency Medicine, Asahikawa, Japan
| | - S Fujita
- Asahikawa Medical University, Emergency Medicine, Asahikawa, Japan
| | - N Hasebe
- Asahikawa Medical University, Division of Cardiology, Nephrology, Pulmonology and Neurology, Department of Internal Medicine, Asahikawa, Japan
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8
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Kadono Y, Nohara T, Kawaguchi S, Sakamoto J, Makino T, Nakashima K, Iijima M, Shigehara K, Izumi K, Mizokami A. Changes in penile length after radical prostatectomy: effect of neoadjuvant androgen deprivation therapy. Andrology 2018; 6:903-908. [PMID: 29968337 DOI: 10.1111/andr.12517] [Citation(s) in RCA: 1] [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] [Received: 01/16/2018] [Revised: 05/14/2018] [Accepted: 05/30/2018] [Indexed: 10/28/2022]
Abstract
Although reports have shown evidence for penile length (PL) shortening after radical prostatectomy (RP), the association between neoadjuvant androgen deprivation therapy (NADT) and PL after RP has yet to be determined. This study evaluates chronological changes in PL after NADT and RP. Stretched PLs (SPLs) of 143 patients, 41 of whom had undergone NADT, were measured before, 10 days after, and 1, 3, 6, 9, 12, 18, and 24 months after RP. Chronological erectile function and testosterone levels were then evaluated. SPL was shortest 10 days after RP in both the NADT (-) and NADT (+) groups and gradually recovered in length thereafter. SPL in the NADT (-) group was significantly longer than that in the NADT (+) group before RP. However, no significant differences in SPLs were found between both groups 6 months after RP. Although all subjects in the NADT (+) group had testosterone levels of <50 ng/dL before RP, such levels increased after RP. Before RP, the NADT (-) group was found to have significantly better erectile function than the NADT (+) group. However, differences in erectile function between the NADT (-) and NADT (+) groups after RP were not significant. This report is the first to show that among patients with prostate cancer, those who underwent NADT had greater PL recovery after RP than those who did not. Data regarding PL recovery after NADT and RP obtained in this study could be useful for patients with prostate cancer who plan to undergo such procedures.
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Affiliation(s)
- Y Kadono
- Department of Integrative Cancer Therapy and Urology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - T Nohara
- Department of Integrative Cancer Therapy and Urology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - S Kawaguchi
- Department of Integrative Cancer Therapy and Urology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - J Sakamoto
- Department of Integrative Cancer Therapy and Urology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - T Makino
- Department of Integrative Cancer Therapy and Urology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - K Nakashima
- Department of Integrative Cancer Therapy and Urology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - M Iijima
- Department of Integrative Cancer Therapy and Urology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - K Shigehara
- Department of Integrative Cancer Therapy and Urology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - K Izumi
- Department of Integrative Cancer Therapy and Urology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - A Mizokami
- Department of Integrative Cancer Therapy and Urology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
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9
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Nakajima K, Fujita J, Tohyama S, Ohno R, Kanazawa H, Seki T, Kishino Y, Okada M, Kawaguchi S, Tanosaki S, Someya S, Shimizu H, Tabata Y, Kobayashi E, Fukuda K. P2542The regenerative therapy of human induced pluripotent stem cells-derived pure cardiac spheroids with gelatin hydrogel restores cardiac function and has weak arrhythmogenic property in heart failure. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p2542] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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10
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Kawaguchi S, Okada M, Hayashi K, Kashiwagi Y, Hasebe N, Fujita S. P1486Beta-3 adrenergic receptor is a therapeutic target for sepsis-induced cardiomyopathy. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p1486] [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: 11/14/2022] Open
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11
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Kawaguchi S, Takemoto M, Osaka K, Nishibori E, Moriyoshi C, Kubota Y, Kuroiwa Y, Sugimoto K. High-throughput powder diffraction measurement system consisting of multiple MYTHEN detectors at beamline BL02B2 of SPring-8. Rev Sci Instrum 2017; 88:085111. [PMID: 28863664 DOI: 10.1063/1.4999454] [Citation(s) in RCA: 107] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
In this study, we developed a user-friendly automatic powder diffraction measurement system for Debye-Scherrer geometry using a capillary sample at beamline BL02B2 of SPring-8. The measurement system consists of six one-dimensional solid-state (MYTHEN) detectors, a compact auto-sampler, wide-range temperature control systems, and a gas handling system. This system enables to do the automatic measurement of temperature dependence of the diffraction patterns for multiple samples. We introduced two measurement modes in the MYTHEN system and developed new attachments for the sample environment such as a gas handling system. The measurement modes and the attachments can offer in situ and/or time-resolved measurements in an extended temperature range between 25 K and 1473 K and various gas atmospheres and pressures. The results of the commissioning and performance measurements using reference materials (NIST CeO2 674b and Si 640c), V2O3 and Ti2O3, and a nanoporous coordination polymer are presented.
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Affiliation(s)
- S Kawaguchi
- Research and Utilization Division, Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - M Takemoto
- Research and Utilization Division, Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - K Osaka
- Industrial Application Division, Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - E Nishibori
- Faculty of Pure and Applied Sciences, TIMS and CiRfSE, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - C Moriyoshi
- Graduate School of Science, Hiroshima University, Higashihiroshima, Hiroshima 739-8526, Japan
| | - Y Kubota
- Department of Physical Science, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan
| | - Y Kuroiwa
- Graduate School of Science, Hiroshima University, Higashihiroshima, Hiroshima 739-8526, Japan
| | - K Sugimoto
- Research and Utilization Division, Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
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Kawaguchi S, Fujita J, Hirano A, Kanazawa H, Tohyama S, Handa N, Okuda S, Hishikawa S, Kunita S, Seki T, Nakajima K, Tabata Y, Kobayashi E, Shimizu H, Fukuda K. P2560The regenerative therapy with human iPS cells-derived cardiac spheroids and gelatin hydrogel significantly improves cardiac function and cause no lethal arrhythmia in a pig model of heart failure. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p2560] [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: 11/13/2022] Open
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13
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Ishii Y, Tsukasaki H, Kawaguchi S, Ouchi Y, Mori S. Structural investigation of the SrAl 2 O 4 -BaAl 2 O 4 solid solution system with unstable domain walls. J SOLID STATE CHEM 2017. [DOI: 10.1016/j.jssc.2017.03.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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14
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Kawaguchi S, Ishibashi H, Nagami K, Kubota Y. Suppression of phase transitions at low temperature by chromium substitution in vanadium spinel Fe(V1-x Cr x )2O4. J Phys Condens Matter 2016; 28:296001. [PMID: 27250516 DOI: 10.1088/0953-8984/28/29/296001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Synchrotron powder diffraction, magnetization, and specific heat measurements have been used to investigate the structural and magnetic phase transitions in the spinel-type vanadate Fe(V1-x Cr x )2O4 (0.0 ⩽ x ⩽ 1.0). We observed five different transitions in our polycrystalline samples. The canted-type ferrimagnetic phase transition accompanied by the lattice distortion was suppressed by Cr substitution (x = 0.2). Additionally, high-resolution synchrotron powder diffraction revealed that the low-temperature orthorhombic phase appears in FeV2O4 below 30 K and disappears by subtle Cr doping. In contrast, for x ⩾ 0.7, we observed a different magnetic transition of possibly conical-type ferrimagnetic ordering that did not induce significant lattice distortion at the transition temperature. We performed structural refinements for low-temperature phases and suggest that the crystal system of Fe(V1-x Cr x )2O4 at 15K is an orthorhombic lattice for all x values. In the orthorhombic phase, a unique behaviour was observed, with the lattice constants a and b approaching each other as Cr doping increased. This behaviour can be explained by the change of orbitally ordered states of the Fe(2+) ions.
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Affiliation(s)
- S Kawaguchi
- Research & Utilization Division, Japan Synchrotron Radiation Research Institute (JASRI/SPring-8), 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
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Terao C, Ota M, Shiokawa M, Kuriyama K, Kodama Y, Uchida K, Yamaguchi I, Kawaguchi T, Kawaguchi S, Higasa K, Mimori T, Okazaki K, Chiba T, Kawa S, Matsuda F. OP0238 Fcgr2b and Multiple Hla Loci Are Associated with Susceptibility To IGG4-Related Disease. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.3046] [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: 11/03/2022]
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Kawaguchi S, Mirza R, Nissim R, Ridley J. Internal Medicine Residents' Beliefs, Attitudes, and Experiences Relating to Palliative Care: A Qualitative Study. Am J Hosp Palliat Care 2016; 34:366-372. [PMID: 26843534 DOI: 10.1177/1049909116628799] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Internal medicine residents are frequently called upon to provide palliative care to hospitalized patients, but report feeling unprepared to do so effectively. Curricular development to enhance residents' palliative care skills and competencies requires an understanding of current beliefs, attitudes and learning priorities. METHODS We conducted a qualitative study consisting of semi-structured interviews with ten internal medicine residents to explore their understanding of and experiences with palliative care. RESULTS All of the residents interviewed had a sound theoretical understanding of palliative care, but faced many challenges in being able to provide care in practice. The challenges described by residents were system-related, patient-related and provider-related. They identified several priority areas for further learning, and discussed ways in which their current education in palliative care could be enhanced. CONCLUSIONS Our findings provide important insights to guide curricular development for internal medicine trainees. The top five learning priorities in palliative care that residents identified in our study were: 1) knowing how and when to initiate a palliative approach, 2) improving communication skills, 3) improving symptom management skills, 4) identifying available resources, and 5) understanding the importance of palliative care. Residents felt that their education in palliative care could be improved by having a mandatory rotation in palliative care, more frequent didactic teaching sessions, more case-based teaching from palliative care providers, opportunities to be directly observed, and increased support from palliative care providers after-hours.
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Affiliation(s)
- S Kawaguchi
- 1 Division of Palliative Care, Department of Family and Community Medicine, Mount Sinai Hospital, Toronto, Ontario, Canada
| | - R Mirza
- 2 Faculty of Medicine, Institute for Life Course and Aging, University of Toronto, Toronto, Ontario, Canada
| | - R Nissim
- 3 Department of Psychosocial Oncology and Palliative Care, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
| | - J Ridley
- 4 Division of Palliative Care, Department of Family and Community Medicine, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
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Meyer B, Martini P, Biscontin A, De Pittà C, Romualdi C, Teschke M, Frickenhaus S, Harms L, Freier U, Jarman S, Kawaguchi S. Pyrosequencing and de novo assembly of Antarctic krill (Euphausia superba) transcriptome to study the adaptability of krill to climate-induced environmental changes. Mol Ecol Resour 2015; 15:1460-71. [PMID: 25818178 PMCID: PMC4672718 DOI: 10.1111/1755-0998.12408] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Revised: 03/13/2015] [Accepted: 03/18/2015] [Indexed: 11/28/2022]
Abstract
The Antarctic krill, Euphausia superba, has a key position in the Southern Ocean food web by serving as direct link between primary producers and apex predators. The south-west Atlantic sector of the Southern Ocean, where the majority of the krill population is located, is experiencing one of the most profound environmental changes worldwide. Up to now, we have only cursory information about krill’s genomic plasticity to cope with the ongoing environmental changes induced by anthropogenic CO2 emission. The genome of krill is not yet available due to its large size (about 48 Gbp). Here, we present two cDNA normalized libraries from whole krill and krill heads sampled in different seasons that were combined with two data sets of krill transcriptome projects, already published, to produce the first knowledgebase krill ‘master’ transcriptome. The new library produced 25% more E. superba transcripts and now includes nearly all the enzymes involved in the primary oxidative metabolism (Glycolysis, Krebs cycle and oxidative phosphorylation) as well as all genes involved in glycogenesis, glycogen breakdown, gluconeogenesis, fatty acid synthesis and fatty acids β-oxidation. With these features, the ‘master’ transcriptome provides the most complete picture of metabolic pathways in Antarctic krill and will provide a major resource for future physiological and molecular studies. This will be particularly valuable for characterizing the molecular networks that respond to stressors caused by the anthropogenic CO2 emissions and krill’s capacity to cope with the ongoing environmental changes in the Atlantic sector of the Southern Ocean.
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Affiliation(s)
- B Meyer
- Section Polar Biological Oceanography, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570, Bremerhaven, Germany.,Institute for Chemistry and Biology of the Marine Environment, Carl von Ossietzky University of Oldenburg, Carl-von-Ossietzky-Straße 9-11, 26111, Oldenburg, Germany
| | - P Martini
- Dipartimento di Biologia, Università degli Studi di Padova, via U. Bassi, 58/B, 35131, Padova, Italy
| | - A Biscontin
- Dipartimento di Biologia, Università degli Studi di Padova, via U. Bassi, 58/B, 35131, Padova, Italy
| | - C De Pittà
- Dipartimento di Biologia, Università degli Studi di Padova, via U. Bassi, 58/B, 35131, Padova, Italy
| | - C Romualdi
- Dipartimento di Biologia, Università degli Studi di Padova, via U. Bassi, 58/B, 35131, Padova, Italy
| | - M Teschke
- Section Polar Biological Oceanography, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570, Bremerhaven, Germany
| | - S Frickenhaus
- Section Scientific Computing, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570, Bremerhaven, Germany.,Hochschule Bremerhaven, An der Karlstadt 8, 27568, Bremerhaven, Germany
| | - L Harms
- Section Scientific Computing, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570, Bremerhaven, Germany
| | - U Freier
- SC-Scientific Consulting, Münchener Str. 41a, D-41472, Neuss, Germany
| | - S Jarman
- Australian Antarctic Division, Kingston, Tas., 7050, Australia
| | - S Kawaguchi
- Australian Antarctic Division, Kingston, Tas., 7050, Australia
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Akaishi R, Yamada T, Kawaguchi S, Kojima T, Koyama T, Umazume T, Morikawa M, Cho K, Minakami H. Uptake of non-invasive prenatal testing by Japanese women. Ultrasound Obstet Gynecol 2015; 45:113-114. [PMID: 25270576 DOI: 10.1002/uog.14676] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Revised: 09/10/2014] [Accepted: 09/19/2014] [Indexed: 06/03/2023]
Affiliation(s)
- R Akaishi
- Department of Obstetrics, Hokkaido University Graduate School of Medicine, Kita-ku, Sapporo, Japan
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Nihei S, Sato J, Kimura T, Otsuka K, Kawaguchi S, Kudo K. [Treatment algorithm for oxaliplatin-induced peripheral neuropathy]. Gan To Kagaku Ryoho 2014; 41:1387-1390. [PMID: 25434440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Oxaliplatin (L-OHP) is a key drug in the treatment of colorectal cancer; however, L-OHP-induced peripheral neuropathy becomes a dose-limiting factor for which withdrawal is the only effective option. In the present study, we attempted to treat L-OHP-induced peripheral neuropathy using the algorithm consisting of pregabalin, duloxetine, and oxycodone at Iwate Medical University Hospital. The first, second, and third stages of the algorithm consist of pregabalin, duloxetine, and oxycodone, respectively. We examined the usefulness and safety of the treatment algorithm for 27 patients with colorectal cancer by evaluating the side effects and degree of improvement of subjective symptoms. When discontinuation was necessary due to adverse events or invalid treatment during the 4-week study period, the patient was transitioned to the next stage. The response rates of the first, second, and third stages of the algorithm were 33% (9/27), 33% (6/18), and 17% (1/6), respectively, whereas the overall response rate was 59% (16/27). The side effect rates of the first, second, and third stages were 37% (10/27), 33% (6/18), and 83% (5/6), respectively. Somnolence was the most common side effect of these drugs. Thus, our treatment algorithm appears to be useful for L-OHP-induced peripheral neuropathy. However, pregabalin, duloxetine, and oxycodone should be administered with specific attention on the potential side effects.
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Affiliation(s)
- Satoru Nihei
- Dept. of Pharmacy, Iwate Medical University Hospital
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Abstract
We have synthesized the Fe(1-x)Mn(x)V(2)O(4) (0 ≦ x ≦ 1) system, and have investigated its structural and magnetic properties through synchrotron powder diffraction, magnetization and specific heat measurements. We have examined the local distortion for both the FeO(4) tetrahedron and VO(6) octahedron on the basis of structural refinements using the synchrotron diffraction data. We found that the behaviour of these local distortions and the temperature dependent magnetization changes continuously with respect to the Mn(2+) concentration, x. The local distortion of the FeO(4) tetrahedron derived from the orbital order of the x(2)-y(2) type below the ferrimagnetic transition temperature becomes smaller for x ≦ 0.6, and is absent for x > 0.6. The ferro-orbital order, leading to compressed local distortion of VO(6) below the non-collinear ferrimagnetic order temperature, is gradually suppressed with increasing x and changes to the antiferro-orbital order for x > 0.6, for which the long range orbital order of Fe(2+) disappears. We suggest that the two types of V(3+) orbital orders are strongly correlated with the non-collinear magnetic order, and that the ferro-orbital order is possibly stabilized by the orbital degrees of freedom of the Fe(2+) ions located at the A-site.
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Affiliation(s)
- S Kawaguchi
- Department of Physical Science, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan
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Affiliation(s)
- M. Davies
- School of Veterinary Medicine and Science; University of Nottingham; Sutton Bonington Loughborough LE12 5RD UK
| | - S. Kawaguchi
- School of Veterinary Medicine and Science; University of Nottingham; Sutton Bonington Loughborough LE12 5RD UK
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Wongsapai M, Suebnukarn S, Rajchagool S, Beach D, Kawaguchi S. Health-oriented electronic oral health record: development and evaluation. Health Informatics J 2014; 20:104-17. [PMID: 24810725 DOI: 10.1177/1460458213483613] [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] [Indexed: 11/17/2022]
Abstract
This study aims to develop and evaluate a new Health-oriented Electronic Oral Health Record that implements the health-oriented status and intervention index. The index takes the principles of holistic oral healthcare and applies them to the design and implementation of the Health-oriented Electronic Oral Health Record. We designed an experiment using focus groups and a consensus (Delphi process) method to develop a new health-oriented status and intervention index and graphical user interface. A comparative intervention study with qualitative and quantitative methods was used to compare an existing Electronic Oral Health Record to the Health-oriented Electronic Oral Health Record, focusing on dentist satisfaction, accuracy, and completeness of oral health status recording. The study was conducted by the dental staff of the Inter-country Center for Oral Health collaborative hospitals in Thailand. Overall, the user satisfaction questionnaire had a positive response to the Health-oriented Electronic Oral Health Record. The dentists found it easy to use and were generally satisfied with the impact on their work, oral health services, and surveillance. The dentists were significantly satisfied with the Health-oriented Electronic Oral Health Record compared to the existing Electronic Oral Health Record (p < 0.001). The accuracy and completeness values of the oral health information recorded using the Health-oriented Electronic Oral Health Record were 97.15 and 93.74 percent, respectively. This research concludes that the Health-oriented Electronic Oral Health Record satisfied many dentists, provided benefits to holistic oral healthcare, and facilitated the planning, managing, and evaluation of the healthcare delivery system.
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Kawaguchi S, Ishibashi H, Nishihara S, Miyagawa M, Inoue K, Mori S, Kubota Y. Anomalous magnetization behaviour in a single crystal of vanadium spinel FeV2O4. J Phys Condens Matter 2013; 25:416005. [PMID: 24055870 DOI: 10.1088/0953-8984/25/41/416005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Spinel oxide FeV2O4, having the orbital degrees of freedom at Fe(2+) and V(3+) ions, exhibits multi-step magnetic phase transitions and successive structural phase transitions at low temperatures. In order to clarify the magnetic properties of FeV2O4, we have measured the temperature dependence of magnetization, isothermal magnetization curves and specific heat using a single crystal of FeV2O4. Temperature-induced magnetization jumps below the 110 K were observed in the zero-field-cooled magnetization curves. Furthermore, we found that the behaviours of the isothermal magnetization curves were quite different between the zero-field-cooled and field-cooled conditions. We suggest that the change of the magnetic domain structure under the magnetic field associated with the orbital states of Fe(2+) ions is the possible origin of these intriguing and anomalous magnetic properties in a single crystal of FeV2O4.
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Affiliation(s)
- S Kawaguchi
- Department of Physical Science, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan
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Kawaguchi S, Shigehara K, Sasagawa T, Kuribayashi M, Junicho A, Hasegawa T, Maeda Y, Namiki M. A Case Study of Human Papillomavirus-associated Bladder Carcinoma Developing after Urethral Condyloma Acuminatum. Jpn J Clin Oncol 2012; 42:455-8. [DOI: 10.1093/jjco/hys024] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Fukuchi T, Nakase H, Ito D, Yamashita H, Matsuura M, Nagatani Y, Koga H, Senda K, Eguchi T, Ubukata S, Kawaguchi S, Ueda A, Tanaka T, Ohashi R, Otzuka M, Ashida K. Rapid induction of mucosal healing by intensive granulocyte and monocyte adsorptive aphaeresis in active ulcerative colitis patients without concomitant corticosteroid therapy. Aliment Pharmacol Ther 2011; 34:583-5. [PMID: 21806645 DOI: 10.1111/j.1365-2036.2011.04768.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Yoshimoto M, Takebayashi T, Kawaguchi S, Tsuda H, Ida K, Wada T, Suzuki D, Yamashita T. Minimally Invasive Technique for Decompression of Lumbar Foraminal Stenosis Using a Spinal Microendoscope: Technical Note. ACTA ACUST UNITED AC 2011; 54:142-6. [DOI: 10.1055/s-0031-1279716] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Hashimoto H, Hara K, Hishiki A, Kawaguchi S, Yoshizawa T, Unzai S, Tamaru Y, Shimizu T, Sato M. Crystal structure of zinc-finger domain of Nanos and its functional implications. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311094566] [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: 11/10/2022] Open
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28
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Kaya M, Wada T, Nagoya S, Kawaguchi S, Yamashita T, Yamamoto N, Yoshimoto M, Okada F, Ishii S. TNP-470 Suppresses the Tumorigenicity of HT1080 Fibrosarcoma Tumor Through the Inhibition of VEGF Secretion From the Tumor Cells. Sarcoma 2011; 5:197-202. [PMID: 18521314 PMCID: PMC2395463 DOI: 10.1080/13577140120099182] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Angiogenesis inhibitors are a novel class of promising therapeutic agents for treating cancer. TNP-470, a systemic analogue
of fumagillin, is an angiogenesis inhibitor capable of suppressing the tumorigenicity in several animal models even though
the mechanisms of action have not been completely clarified. In the current study, we investigated the effects of TNP-470
on human fibrosarcoma cells in vivo and in vitro. The administration of TNP-470 could suppress the tumorigenicity of
HT1080 fibrosarcoma tumor. The conditioned medium from HT1080 fibrosarcoma cells treated with TNP-470 inhibited
the proliferation and migration of human endothelial cell line, HUVEC and ECV304. The concentration of VEGF in the
conditioned medium from HT1080 cells treated with TNP-470 was lower than that of the cells without TNP-470 treatment,
indicating that TNP-470 downregulates the secretion of VEGF from HT1080 cells. These findings strongly suggest that the
direct action of TNP-470 on sarcoma cells inhibits angiogenesis through the downregulation of VEGF secretion and this
angiogenesis suppression resulted in the inhibition of tumorigenicity of HT1080 fibrosarcoma tumo.
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Affiliation(s)
- M Kaya
- Department of Orthopedic Surgery Sapporo Medical University School of Medicine S-1, W-16, Chuo-ku, Sapporo Hokkaido 060-8543 Japan
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Obitsu Y, Koizumi N, Kawaguchi S, Shigematsu H. Endovascular Treatment of Late Anastomotic Aneurysm Following Bypass Surgery for Atypical Aortic Coarctation due to Takayasu Arteritis. Eur J Vasc Endovasc Surg 2010. [DOI: 10.1016/j.ejvs.2010.04.024] [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: 11/28/2022]
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Morioka R, Arita M, Sakamoto K, Kawaguchi S, Tei H, Horimoto K. Period-phase map: two-dimensional selection of circadian rhythm-related genes. IET Syst Biol 2009; 3:487-95. [PMID: 19947774 DOI: 10.1049/iet-syb.2008.0179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Many genes related to the circadian rhythm, especially those involved in phase shifts induced by different environmental stimuli, still remain enigmatic. In this study, the authors monitored the expression of rat genes measured with multiple phase-resetting stimuli, and developed a technique to extract the candidate genes for the changes in circadian rhythm by the stimuli, from microarray data. First, the spectra for the time series of gene expression were estimated by fast Fourier transform, and then two fitting methods, the random period fitting method and the conditional curve fitting method, using the estimated periods as the initial values, were applied to the control and the stimulated expression data to estimate the periods and the phases. Finally, by comparing the two sets of periods and phases, the period change and the phase shift by stimuli were estimated to extract the candidate genes related to the master clock, by mapping the period change and the phase shift on a two-dimensional space, a period-phase map (PPM). As an indirect validation of the genes selected by our method, the significant enrichment of extracted gene clusters on the PPM was further evaluated, in terms of biological function. As a result, the gene clusters related to photoreceptors and neural regulation emerged on the PPM, thus implying the relationships in the stimulus response of the master clock that resides in the brain at the intersection of the optic nerves. Thus, the present approach is a feasible means to explore the oscillatory genes related to stimulus responses.
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Affiliation(s)
- R Morioka
- National Institute of Advanced Industrial Science and Technology, Computational Biology Research Center, Koto, Tokyo, Japan
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Hachimaru T, Watanabe M, Kawaguchi S, Nakahara H. [Large saphenous vein graft aneurysm after coronary artery bypass grafting]. Kyobu Geka 2009; 62:1140-1143. [PMID: 19999091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A 64-year-old man underwent coronary artery bypass grafting (CABG) in 1994. Eleven years later, coronary angiography (CAG) showed a saphenous vein graft (SVG) aneurysm. In April 2008, the CAG demonstrated enlargement of the aneurysm. Enhanced computed tomography showed a large aneurysm measuring 53 x 44 mm in diameter of the SVG-right coronary artery (RCA) [#3] anastomosis. Off-pump coronary surgery to RCA and aneurysmectomy was planned through a median epigastric incision. However re-grafting was difficult because of severe adhesion and calcification of the coronary artery. We confirmed sufficient back flow from the distal coronary artery without hemodynamic and electrocardiographic changes under SVG clamp. Aneurysmectomy was then performed without coronary bypass. The patient was discharged 9 days after surgery and has been well for 8 months in outpatient clinic.
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Affiliation(s)
- T Hachimaru
- Department of Cardiovascular Surgery, Hiroo Hospital, Tokyo, Japan
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Murase M, Kano M, Tsukahara T, Takahashi A, Torigoe T, Kawaguchi S, Kimura S, Wada T, Uchihashi Y, Kondo T, Yamashita T, Sato N. Side population cells have the characteristics of cancer stem-like cells/cancer-initiating cells in bone sarcomas. Br J Cancer 2009; 101:1425-32. [PMID: 19826427 PMCID: PMC2768447 DOI: 10.1038/sj.bjc.6605330] [Citation(s) in RCA: 103] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Background: Several human cancers have been found to contain cancer stem-like cells (CSCs) having cancer-initiating ability. However, only a few reports have shown the existence of CSCs in bone and soft tissue sarcomas. In this study, we identified and characterised side population (SP) cells that showed drug-resistant features in human bone sarcoma cell lines. Methods: In seven osteosarcoma cell lines (OS2000, KIKU, NY, Huo9, HOS, U2OS and Saos2) and in one bone malignant fibrous histiocytoma (MFH) cell line (MFH2003), the frequency of SP cells was analysed. Tumourigenicity of SP cells was assessed in vitro and in vivo. Gene profiles of SP cells and other populations (main population; MP) of cells were characterised using cDNA microarrays. Results: SP cells were found in NY (0.31%) and MFH2003 (5.28%). SP cells of MFH2003 formed spherical colonies and re-populated into SP and MP cells. In an NOD/SCID mice xenograft model, 1 × 103 sorted SP cell-induced tumourigenesis. cDNA microarray analysis showed that 23 genes were upregulated in SP cells. Conclusions: We showed that SP cells existed in bone sarcoma cell lines. SP cells of MFH2003 had cancer-initiating ability in vitro and in vivo. The gene profiles of SP cells could serve as candidate markers for CSCs in bone sarcomas.
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Affiliation(s)
- M Murase
- Department of Orthopaedic Surgery, Sapporo Medical University School of Medicine, Chuo-ku, Sapporo, Japan
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Yamaguchi Y, Kawaguchi S, Arimura H, Morishita J, Ohki M, Uno Y, Ideguchi T, Tokumori K, Higashida Y, Toyofuku F. SU-FF-I-65: Relative Contributions of Rayleigh Scattering for PMMA in the Mammography Energy Range. Med Phys 2009. [DOI: 10.1118/1.3181185] [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: 11/07/2022] Open
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Kawaguchi S, Yamaguchi Y, Arimura H, Morishita J, Ohki M, Uno Y, Ideguchi T, Higashida Y, Toyofuku F. SU-FF-I-55: Reconstruction of Mammography X-Ray Spectrum Using Rayleigh and Compton Scattering Corrections. Med Phys 2009. [DOI: 10.1118/1.3181174] [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: 11/07/2022] Open
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Bengtson Nash SM, Poulsen AH, Kawaguchi S, Vetter W, Schlabach M. Persistent organohalogen contaminant burdens in Antarctic krill (Euphausia superba) from the eastern Antarctic sector: a baseline study. Sci Total Environ 2008; 407:304-14. [PMID: 18848720 DOI: 10.1016/j.scitotenv.2008.08.034] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2008] [Revised: 08/13/2008] [Accepted: 08/14/2008] [Indexed: 05/22/2023]
Abstract
A baseline for persistent organohalogen compound (POC) accumulation in the Antarctic keystone species, Antarctic krill (Euphausia superba) has been established for a 50 degrees longitudinal range of the eastern Antarctic sector. Samples of adult krill, caught from 12 sites distributed between 30 degrees and 80 degrees E (60-70 degrees S), were analysed for >100 organohalogen compounds including chlorinated pesticides, polychlorinated biphenyls (PCBs), polybrominated organic compounds and polychlorinated dibenzo-p-dioxins/furans (PCDD/Fs). Organochlorine pesticides dominated measured krill contaminant burdens with hexachlorobenzene (HCB) as the single most abundant compound quantified. Krill HCB concentrations were comparable to those detected at this trophic level in both the Arctic and temperate northwest Atlantic, lending support for the hypothesis that HCB will approach global equilibrium at a faster rate than other POCs. Para, para'-dichlorodiphenylethene (p,p'-DDE) was detected at notable concentrations. Measurements of DDT and its degradation products provide an important baseline for monitoring the temporal and geographical influence of renewed, DDT usage for malaria-control in affected southern hemisphere countries. In contrast to the Arctic, PCBs did not feature prominently in contaminant burdens of Antarctic krill. The major commercial polybrominated diphenyl ether (PBDE) congeners -99 and -47 were quantified at low background levels with clear concentration spikes observed at around 70 degrees E , in the vicinity of modern, active research stations. The likelihood that local anthropogenic activities are supplementing low PBDE levels, delivered otherwise primarily via long range environmental transport, is discussed. The suspected naturally occurring brominated organic compound, 2,4,6-tribromoanisole (TBA), was a ubiquitous contaminant in all samples whereas the only PCDD/Fs quantifiable were trace levels of octachlorodibenzo-p-dioxin (OCDD) and 1,2,3,4,7,8/1,2,3,4,7,9-hexachlorodibenzofuran (HxCDF). With the aims of; i) Generating a robust and broadly applicable POC auditing platform for the scarcely studied eastern Antarctic sector; ii) Determining the compounds accumulating in Antarctic krill for further toxicity evaluation studies and iii) Establishing a baseline for Antarctic predator exposure to POCs, this study represents one of the most comprehensive reports of POC contamination of the Antarctic food web to date.
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Affiliation(s)
- S M Bengtson Nash
- The University of Queensland, The National Research Centre for Environmental Toxicology, Coopers Plains, Queensland 4180, Australia.
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Hachimaru T, Kawaguchi S, Watanabe M, Nakahara H. [Proximal anastomotic pseudoaneurysm due to gelatin-resorcin-formalin (GRF) glue after replacement of ascending aorta for acute aortic dissection; report of a case]. Kyobu Geka 2008; 61:242-245. [PMID: 18323193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A 78-year-old man had previously undergone replacement of ascending aorta using gelatin-resorcin-formalin (GRF) glue for acute aortic dissection. Five years later, a follow-up computed tomography (CT) showed an aortic root pseudoaneurysm. Ultrasound cardiography revealed moderate aortic regurgitation and pseudoaneurysm of aortic root. Aortic root replacement was planned based on a clinical diagnosis of an anastomotic pseudoaneurysm of the aortic root. The patient was discharged without complication 26 days after surgery. In the histopathological examination, the necrotic change of smooth muscle cells in the aortic media was revealed. Previous reports suggests that the use of GRF glue for reconstructing the dissected aorta results in higher rates of postoperative redissection or pseudoaneurysm. Therefore, careful postoperative follow-up is necessary in such cases and further improvements in the quality of glue or alternative methods will be necessary to prevent problems in the first place.
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Fujimaki H, Kasuya Y, Kawaguchi S, Hara S, Koga S, Takahashi T, Mizuno S. [Relevant factors concerning phenomena related to the process of initiating dialysis in elderly patients with chronic renal failure: predicting the outcomes of subsequent phenomena at the stage of the initial phenomenon]. Nihon Ronen Igakkai Zasshi 2008; 45:81-89. [PMID: 18332577 DOI: 10.3143/geriatrics.45.81] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
AIM We previously investigated the relevant factors concerning each individual phenomenon related to the process of initiating dialysis in elderly patients with chronic renal failure. Background factors that were identified as relevant factors were significant in terms of enabling us to predict the outcome of each phenomenon in new patients. However, the significance of these factors in predicting the outcomes of subsequent phenomena at the stage of the initial phenomenon was unclear. This was attributed to the fact that the subjects with phenomena decreased in number and because of changes in characteristics (hereafter, changes in subjects) with the progression of the process of initiating dialysis. In the present study, we aimed to identify relevant factors for predicting the outcomes of subsequent phenomena at the stage of the initial phenomenon. For this purpose, we assumed that "progression of the process of initiating dialysis does not result in significant reductions in the number of cases and causes only minor changes in characteristics". METHODS We studied a total of 152 patients with advanced chronic renal failure aged >or=60 years. Background factors were investigated in all patients. The following phenomena were analyzed: acceptance of dialysis, urgency of initiating dialysis, alleviation of disease, and returning home. In order to identify new relevant factors, we focused on the order and condition of the process by which each background factor was narrowed down during logistic regression analysis for each phenomenon. We determined which background factor to focus on for each phenomenon based on changes in background factors. RESULTS Age and cognitive function were related to the urgency of initiating dialysis and alleviation of disease. Age, walking ability, and cognitive function were related to returning home. Age was eliminated at the final stage of logistic regression analysis for alleviation of disease and at the penultimate stage of logistic regression analysis for returning home. CONCLUSION We simulated the restoration of cases lost during the process of initiating dialysis in order to determine the relationship of age to alleviation of disease as well as returning home. Although age significantly affected alleviation of disease, its relationship to returning home was unclear. Age was thus identified as a new relevant factor for alleviation of disease. In addition, all relevant factors identified from investigation of each phenomenon enabled prediction of outcomes of subsequent phenomena at the stage of the initial phenomenon.
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Affiliation(s)
- Hiroshi Fujimaki
- Bureau of Social Welfare and Public Health, Tokyo Metropolitan Government
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Koizumi N, Obitsu Y, Sato M, Iwahashi T, Makimura S, Yokoi Y, Kawaguchi S, Shigematsu H. [Adequate size of elephant trunk in the procedure of total arch replacement for acute aortic dissection]. Kyobu Geka 2007; 60:329-33. [PMID: 17416102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Total aortic arch replacement using the 'elephant trunk (ET)' procedure has commonly been applied to acute aortic dissection, but enlargement of a residual false lumen of the descending thoracic aorta sometimes occurs. We performed endovascular stent-grafting to close the entry as the second operation and obtained successful outcomes. From April 1997 to January 2004, we performed the modified ET procedure for acute aortic dissection in 29 patients and evaluated postoperative changes of the false lumen. In many cases of the residual false lumen, kinks and wrinkles were observed at the site of the ET grafts in the descending aorta. An adequate length of ET would be about 8 cm long to prevent kinking, and a diameter about 20 mm to prevent wrinkles.
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Affiliation(s)
- Nobusato Koizumi
- Department of Vascular Surgery, Tokyo Medical University, Tokyo, Japan
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Passmore AJ, Jarman SN, Swadling KM, Kawaguchi S, McMinn A, Nicol S. DNA as a dietary biomarker in Antarctic krill, Euphausia superba. Mar Biotechnol (NY) 2006; 8:686-96. [PMID: 16924375 DOI: 10.1007/s10126-005-6088-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2005] [Accepted: 06/07/2006] [Indexed: 05/11/2023]
Abstract
The diet of Antarctic krill (Euphausia superba) has been studied using a variety of techniques, but current methods still suffer from problems that are difficult to solve. This study examined an alternative approach utilizing DNA as a prey biomarker. Methods were developed for the preservation, extraction, and identification of prey DNA from krill collected in the field. Group-specific polymerase chain reaction (PCR) was used to amplify diatom prey (Phylum: Bacillariophyta) and the results from DNA clone libraries were compared with microscopic diet analysis. DNA analysis was superior to microscopy for prey detection. However, differences in prey relative abundance estimates between the two techniques suggested some bias in the DNA-based estimates. Quantification showed that large amounts of prey DNA had been successfully preserved and extracted. Overall the results suggest that the application of DNA-based diet analysis to krill warrants further investigation, particularly for prey that are difficult to study using other methods.
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Affiliation(s)
- A J Passmore
- Institute of Antarctic and Southern Ocean Studies, University of Tasmania, Private Bag 77, Hobart, Tasmania, 7001, Australia.
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Watanabe M, Kawaguchi S, Nagai K. Self-organization of polymer particles on hydrophobic solid substrates in aqueous media. I. Self-organization of cationic polymer particles on alkylated glass plates. Colloid Polym Sci 2006. [DOI: 10.1007/s00396-006-1567-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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41
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Honaga E, Ukai S, Ishii R, Kawaguchi S, Yamamoto M, Ogawa A, Nakahachi T, Fujita N, Yoshimine T, Shinosaki K, Takeda M. P03.6 Neuromagnetic oscillatory response during movement observation in Asperger disorder. Clin Neurophysiol 2006. [DOI: 10.1016/j.clinph.2006.06.213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Matsumoto M, Kawaguchi S, Ishizashi H, Yagi H, Iida J, Sakaki T, Fujimura Y. Platelets treated with ticlopidine are less reactive to unusually large von Willebrand factor multimers than are those treated with aspirin under high shear stress. Pathophysiol Haemost Thromb 2006; 34:35-40. [PMID: 16293984 DOI: 10.1159/000088546] [Citation(s) in RCA: 33] [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] [Subscribe] [Scholar Register] [Received: 01/06/2005] [Accepted: 03/06/2005] [Indexed: 12/20/2022]
Abstract
Much attention has recently been focused on the interaction between unusually large von Willebrand factor multimers (UL-VWFM) and platelets under high shear stress in pathological thrombus formation. The antiplatelet drugs acetylsalicylic acid (aspirin) and a thienopyridine derivative (ticlopidine) are commonly used to treat cerebral ischemia but exert different effects on high-shear-stress-induced platelet aggregation (H-SIPA) in the plasma. To examine the effects of these drugs in the absence of plasma factors, we studied H-SIPA using washed platelets (WPs) and purified UL-VWFM. WPs were prepared from the blood of 9 aspirin-treated and 11 ticlopidine-treated patients with cerebral ischemia, and H-SIPA in the presence of UL-VWFM was measured using a cone plate aggregometer. Plasma levels of VWF antigen with its multimer analysis, ristocetin cofactor and VWF-cleaving protease (ADAMTS13) activity were also measured. Forty-six healthy volunteers from 2 age groups, 20-40 years (n=20) and 41-60 years old (n=26), were also tested as controls. H-SIPA was significantly inhibited for ticlopidine-treated platelets, but it was observed to a lesser extent for aspirin-treated platelets. For both groups, no difference in the plasma levels of VWF antigen, ristocetin cofactor and ADAMTS13 activity was noted. All patients possessed UL-VWFM, and it was detected in healthy volunteers with increasing frequency with increasing age. Under plasma-free conditions, platelets from aspirin-treated patients exhibit marginal but significant inhibition of H-SIPA. Furthermore, the presence of UL-VWFM in the plasma of patients and normal volunteers is directly related to their age rather than being a consequence of underlying disease.
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Affiliation(s)
- M Matsumoto
- Department of Blood Transfusion Medicine, Nara Medical University, Kashihara, Japan
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Li Y, Tomiyama H, Sato K, Hatano Y, Yoshino H, Atsumi M, Kitaguchi M, Sasaki S, Kawaguchi S, Miyajima H, Toda T, Mizuno Y, Hattori N. Clinicogenetic study of PINK1 mutations in autosomal recessive early-onset parkinsonism. Neurology 2005; 64:1955-7. [PMID: 15955953 DOI: 10.1212/01.wnl.0000164009.36740.4e] [Citation(s) in RCA: 108] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The authors performed PINK1 mutation analysis of 51 families with autosomal recessive Parkinson disease (ARPD). They found two novel PINK1 mutations: one was a homozygous deletion (13516-18118del) and the other a homozygous missense mutation (C388R). Clinically, the patients with the deletion had dementia. Thus, early-onset PD with dementia may be considered PINK1-linked parkinsonism. Furthermore, patients with PINK1 mutations form 8.9% of parkin- and DJ-1-negative ARPD families.
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Affiliation(s)
- Y Li
- Department of Neurology, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
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Nishio T, Kawaguchi S, Yamamoto M, Iseda T, Kawasaki T, Hase T. Tenascin-C regulates proliferation and migration of cultured astrocytes in a scratch wound assay. Neuroscience 2005; 132:87-102. [PMID: 15780469 DOI: 10.1016/j.neuroscience.2004.12.028] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/03/2004] [Indexed: 11/23/2022]
Abstract
Tenascin-C (TNC), an extracellular matrix glycoprotein, is involved in tissue morphogenesis like embryogenesis, wound healing or tumorigenesis. Astrocytes are known to play major roles in wound healing in the CNS. To elucidate the roles of TNC in wound closure by astrocytes, we have examined the morphological changes of cultured astrocytes in a scratch wound assay and measured the content of soluble TNC released into the medium. We have also localized the expression of TNC mRNA, TNC, glial fibrillary acidic protein (GFAP), vimentin and integrin beta1. After wounding, glial cells rapidly released the largest TNC isoform and proliferated in the border zones. Subsequently, they became polarized with unidirectional processes and finally migrated toward the denuded area. The proliferating border zone cells and pre-migratory cells intensely expressed TNC mRNA, TNC-, vimentin-, GFAP- and integrin beta1-like immunoreactivity, while the migratory cells showed generally reduced expression except the front. Exogenous TNC enhanced cell proliferation and migration, while functional blocking with anti-TNC or anti-integrin beta1 antibody reduced both of them. These results suggest that mechanical injury induces boundary astrocytes to produce and release TNC that promotes cell proliferation and migration via integrin beta1 in an autocrine/paracrine fashion.
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Affiliation(s)
- T Nishio
- Department of Integrative Brain Science, Kyoto University Graduate School of Medicine, Yoshida-Konoe, Sakyo, Kyoto 606-8501, Japan.
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Fujimaki H, Kasuya Y, Kawaguchi S, Hara S, Koga S, Takahashi T, Mizuno S. [Refusal of initiation of dialysis by elderly patients with chronic renal failure]. Nihon Ronen Igakkai Zasshi 2005; 42:417-22. [PMID: 16117483 DOI: 10.3143/geriatrics.42.417] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
AIM Refusal of dialysis is not uncommon in elderly patients with chronic renal failure. In this study, we retrospectively inspected our dealings with patients who refused our offer to initiate dialysis. In addition, we discussed how to grasp the meaning of this phenomenon. METHODS We treated 152 patients with advanced chronic renal failure aged 60 years and over at Tokyo Metropolitan Geriatric Hospital. The patients fulfilling the following two criteria were considered to be refusal cases. The first criterion was that an acceptance of the initiation of dialysis could not be obtained in spite of repeated counseling. The second criterion was that a definite outcome was precipitated by the development of severe uremic symptoms. In every refusal case, clinical characteristics and household members were surveyed. Verbal expressions of the reasons for refusal were retrieved from medical charts. The outcome was also studied. RESULTS The two criteria were fulfilled in 7 cases. The male/female ratio was 5:2. The age was 78 +/- 7 years (mean +/- standard deviation). All but one cases were ambulatory, and all cases had normal cognitive function. Four cases were married, and the other cases had lost their partners. The number of household members was 3.9 +/- 1.8. We speculated that every case could maintain a good quality of life even after the initiation of dialysis. Representative expressions of the reasons for refusal were "I have already lived fully" and "I would prefer to accept death rather than dialysis". The outcome was urgent initiation of dialysis (five cases) and death (two cases). The time between initial counseling and the outcome was 115 +/- 37 days. CONCLUSION Accepting or refusing dialysis therapy is a selection related to life or death. We must make an effort to obtain consent to initiating dialysis if patients are assessed as suitable for dialysis.
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Affiliation(s)
- Hiroshi Fujimaki
- Bureau of Social Welfare and Public Health, Tokyo Metropolitan Government
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Kawaguchi S, Ishimaru S. [Endovascular stent grafting for thoracic aortic disease in elderly patients]. Kyobu Geka 2005; 58:689-94. [PMID: 16097619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Despite advances in operative technique and management having improved the clinical outcomes of conventional open surgical replacement for thoracic aortic aneurysms, it remains an invasive procedure especially for aged patients. Over the past 10 years, minimally invasive endovascular surgery using a stent graft, has made significant advances for the treatment of aneurysms. For 10 years from 1995, 476 patients of thoracic aortic aneurysms were treated with the endovascular technique using the stent graft in our hospital. Exclusion of the aneurysms without endoleak were achieved within 2 weeks postoperatively in over 95%. Also in elderly patients (46/476), same good results came out. Endovascular stent grafting shows potential as a safe and useful treatment for thoracic aortic aneurysms, but further investigation should attempt to determine its efficacy over a longer postoperative period.
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Affiliation(s)
- S Kawaguchi
- Second Department of Surgery, Tokyo Medical University, Tokyo, Japan
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Ukai S, Kawaguchi S, Ishii R, Yamamoto M, Ogawa A, Mizuno-Matsumoto Y, Robinson SE, Fujita N, Yoshimine T, Shinosaki K, Takeda M. SAM(g2) analysis for detecting spike localization: a comparison with clinical symptoms and ECD analysis in an epileptic patient. Neurol Clin Neurophysiol 2004; 2004:57. [PMID: 16012618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
SAM(g2) analysis, a combination of synthetic aperture magnetometry (SAM) and excess kurtosis (g2) method, is a novel epilepsy analysis procedure based on a spatial filtering technique. By producing a three-dimensional image of the g2 values and superimposing them onto a patient's MR images, this analysis can automatically estimate spike localization from raw MEG epilepsy signals including spikes. The aim of this study is to examine SAM(g2) analysis using MEG signals of an epileptic patient, whose clinical symptoms of colored elementary visual auras had ceased in accordance with the changes of the estimated localizations of the equivalent current dipoles (ECDs) of the interictal spikes. His visual auras were experienced in 1997, while they ceased in 1999 with effective medication. The patient provided written informed consent for the experimental procedures. The MEG signals were recorded in 1997 and 1999, and were analyzed using both ECD and SAM(g2) analyses. For the MEG signals of 1997, ECD analysis estimated most of the interictal spikes in the right fusiform and inferior temporal gyri, which subserve human color processing. SAM(g2) analysis also estimated them in the same areas. For those of 1999, both ECD and SAM(g2) analyses estimated them in the right transverse gyrus of Heschl. As well as ECD analysis, SAM(g2) analysis successfully estimated the changes of the localizations of the interictal spikes in accordance with the changes of the patient's clinical symptoms, indicating that SAM(g2) analysis is useful for detection of interictal spike localization in epileptic patients.
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Affiliation(s)
- S Ukai
- Department of Psychiatry and Behavioral Science, Osaka University Graduate School of Medicine, Japan.
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Fujimaki H, Kasuya Y, Hara S, Kawaguchi S, Koga S, Takahashi T, Mizuno S. [A pitfall in analyses of relevant factors concerning phenomena in the process of initiating dialysis: alterations in the characteristics of subjects diminish the significance of age]. Nihon Ronen Igakkai Zasshi 2004; 41:653-9. [PMID: 15651384 DOI: 10.3143/geriatrics.41.653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
In our previous studies, relevant factors concerning the main phenomena related to the process of initiating dialysis were examined in elderly patients with chronic renal failure. Examined phenomena were as follows: (1) the acceptance of dialysis; (2) the urgency of initiating dialysis; (3) short-term outcome; (4) returning home. Multivariate logistic regression analysis was used to determine relevant factors. Although we speculated that age should be a relevant factor for each phenomenon, the phenomenon on which age had some impact was only the first. We suspected the existence of a pitfall, through which the relation of age was lost in the second, the third, or the fourth phenomenon. The fact that every phenomenon had its own relevant factors was thought to be an important clue to the discovery of pitfalls. Relevant factors were derived from both the number of dropout-patients and their demographic and clinical status. From the viewpoint of nondropout-patients, the progression of the process of initiating dialysis might alter the characteristics of subjects for successive phenomena In this study, we set out to investigate whether alterations in the characteristics of subjects were pitfalls. Alterations were regarded as a fall of the mean age, an increment of the rate of the patients with ability to walk, and an increment of the rate of the patients with normal cognitive function. In addition, the old-old patients tended to have limited numbers of those who had the ability to walk and normal cognitive function. In other words, aging changes in ambulatory and cognitive function were not brought to subjects. These alterations may cause the loss of the relation of age to each phenomenon. Thus, we presumed these alterations to be pitfalls. We must clarify whether aging changes are brought to subjects beforehand in analyses that include the old-old patients as subjects.
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Hashimoto H, Iida J, Kawaguchi S, Sakaki T. Clinical features and management of brain arteriovenous malformations in elderly patients. Acta Neurochir (Wien) 2004; 146:1091-8; discussion 1098. [PMID: 15316880 DOI: 10.1007/s00701-004-0346-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
BACKGROUND Brain arteriovenous malformations (AVMs) of the elderly have not received sufficient attention, given the increase in age of individuals in recent years. We therefore designed a retrospective study to clarify features of brain AVMs in this age group in comparison with their counterparts in the general population. METHODS A retrospective study was performed, based on data for AVMs treated in Nara Medical University Hospital and affiliated hospitals over the past 13 years. The series included all cases of brain AVMs, except for pure dural AVMs, diagnosed from June 1989 to June 2003. A total of 175 patients were diagnosed as having an AVM during this period, including 32 patients more than 60 years old. Clinical features and effective treatment of brain AVMs in those over and under 60 were explored and outcome at 3 to 6 months after surgery was evaluated according to a modified neurological scale. FINDINGS The most common mode of presentation was intracranial hemorrhage in both groups, and this was remarkable in the elderly. Epilepsy at presentation was less frequent in the elderly (P< 0.05). In the elderly group infratentorial lesions were encountered more frequently (P< 0.05). Good or excellent outcomes of surgery were accomplished in 82.6% of the non-elderly group, and in 69.6% of the elderly group. When restricted to the grades I or II of Spetzler and Martin (S & M) grading, postoperative neurological scores of both groups were significantly better than preoperative values (P < 0.01). In the grade III cases, the non-elderly demonstrated significant improvement after surgery (P <0.01), but the elderly did not. INTERPRETATION Elderly patients with a brain AVM had clinical features of less frequent epileptic presentation and more frequent infratentorial lesions. It was suggested that surgery was acceptable in elderly patients with pallial AVMs of grade I and II. Surgery for grade III AVMs of the elderly remains to be clarified.
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Affiliation(s)
- H Hashimoto
- Department of Neurosurgery, Nara Medical University, Kashihara, Japan.
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50
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Iseda T, Nishio T, Kawaguchi S, Yamanoto M, Kawasaki T, Wakisaka S. Spontaneous regeneration of the corticospinal tract after transection in young rats: a key role of reactive astrocytes in making favorable and unfavorable conditions for regeneration. Neuroscience 2004; 126:365-74. [PMID: 15207354 DOI: 10.1016/j.neuroscience.2004.03.056] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/29/2004] [Indexed: 11/29/2022]
Abstract
We demonstrated the occurrence of marked regeneration of the corticospinal tract (CST) after a single transection and failure of regeneration after a repeated transection in young rats. To provide convincing evidence for the complete transection and regeneration we used retrograde neuronal double labeling. Double-labeled neurons that took up the first tracer from the transection site and the second tracer from the injection site caudal to the transection site were observed in the sensorimotor cortex. The anterograde tracing method revealed various patterns of regeneration. In the most successful cases the vast majority of regenerated fibers descended in the normal tract and terminated normally whereas a trace amount of fibers coursed aberrantly. In the less successful cases fibers descended partly normally and partly aberrantly or totally aberrantly. To clarify the role of astrocytes in determining the success or failure of regeneration we compared expression of glial fibrillary acidic protein (GFAP), vimentin and neurofilament (NF) immunoreactivity (IR) in the lesion between single and repeated transections. In either transection, astrocytes disappeared from the CST near the lesion site as early as 3 h after lesioning. However, by 24 h after a single transection, immature astrocytes coexpressing GFAP- and vimentin-IR appeared in the former astrocyte-free area and NF-positive axons crossed the lesion. By contrast, after a repeated transection the astrocyte-free area spread and NF-positive axons never crossed the lesion. It appears likely that the major sign, and possibly cause of failure of regeneration is the prolonged disappearance of astrocytes in the lesioned tract area.
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Affiliation(s)
- T Iseda
- Department of Integrative Brain Science, Graduate School of Medicine, Kyoto University, Yoshida-Konoe, Sakyo, Kyoto 606-8501, Japan
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