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Yasumoto M, Ohta M, Kawamura Y, Hatayama A. Analysis of rapid increase in the plasma density during the ramp-up phase in a radio frequency negative ion source by large-scale particle simulation. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2014; 85:02B126. [PMID: 24593566 DOI: 10.1063/1.4858136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Numerical simulations become useful for the developing RF-ICP (Radio Frequency Inductively Coupled Plasma) negative ion sources. We are developing and parallelizing a two-dimensional three velocity electromagnetic Particle-In-Cell code. The result shows rapid increase in the electron density during the density ramp-up phase. A radial electric field due to the space charge is produced with increase in the electron density and the electron transport in the radial direction is suppressed. As a result, electrons stay for a long period in the region where the inductive electric field is strong, and this leads efficient electron acceleration and a rapid increasing of the electron density.
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Takahashi H, Ishii H, Aoyama T, Kamoi D, Kawamura Y, Sakakibara T, Kumada Y, Murohara T. Association of geriatric nutritional risk index and C-reactive protein with cardiovascular morbidity in end-stage renal disease patients who just began hemodialysis therapy. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.4357] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Kamoi D, Ishii H, Kawamura Y, Sakakibara T, Aoyama T. First-generation vs. second-generation drug-eluting stent to coronary intervention in hemodialysis patients. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.850] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Takahashi H, Ishii H, Kamoi D, Aoyama T, Kawamura Y, Sakakibara T, Kumada Y, Ishii J, Murohara T. Multiple biomarkers improve the prediction of cardiovascular mortality in patients on chronic hemodialysis. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p5155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Ishii H, Aoyama T, Kumada Y, Kamoi D, Sakakibara T, Kawamura Y, Suzuki S, Tanaka M, Yoshikawa D, Murohara T. Treatment with cilostazol prevents incidence of stroke in haemodialysis patients with peripheral artery disease: propensity score-adjusted analysis. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht307.p388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Kumada Y, Nogaki H, Takahashi H, Ishii H, Aoyama T, Kamoi D, Kawamura Y, Sakakibara T, Murohara T. Long-term clinical outcome after surgical or percutaneous coronary revascularization in hemodialysis patients. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p2151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Namba K, Mashio K, Kawamura Y, Higaki A, Nemoto S. Swine hybrid aneurysm model for endovascular surgery training. Interv Neuroradiol 2013; 19:153-8. [PMID: 23693037 DOI: 10.1177/159101991301900202] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2012] [Accepted: 01/17/2013] [Indexed: 11/16/2022] Open
Abstract
The aim of this study was to develop a technically simple swine aneurysm-training model by inserting a silicone aneurysm circuit in the cervical vessels. A silicone aneurysm circuit was created by designing multiple aneurysms in size and configuration on a silicone vessel. Five swine underwent surgical implantation of this circuit in the cervical vessels: one end in the common carotid artery and the other in the external jugular vein. Using this model, an aneurysm coiling procedure was simulated under fluoroscopic guidance, roadmapping and digital subtraction angiography. Creating an aneurysm model for training purposes by this method was technically simple and enabled the formation of a wide variety of aneurysms in a single procedure. The quality of the model was uniform and the model was reproducible. Coiling training using this model resembled a realistic clinical situation. The swine hybrid aneurysm-training model was advantageous from the standpoint of technical simplicity in the creation and variety of aneurysms it provided. The swine hybrid aneurysm model may be an additional option for aneurysm coiling training.
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Okamoto A, Kawamura Y, Takahashi H, Kumagai T, Daibo A, Kitajima S. Development of Multi-Port Imaging System for Divertor Simulating Linear Device. FUSION SCIENCE AND TECHNOLOGY 2013. [DOI: 10.13182/fst13-a16906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Kamiya Y, Shimada Y, Ito S, Kikuchi M, Yasuda M, Kawamura Y, Deguchi T. Analysis of the quinolone-resistance determining region of the gyrA gene and the analogous region of the parC gene in Ureaplasma parvum and Ureaplasma urealyticum detected in first-void urine of men with non-gonococcal urethritis. J Antimicrob Chemother 2012; 68:480-2. [DOI: 10.1093/jac/dks417] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Takeyama H, Kanamaru A, Yoshino Y, Kakuta H, Kawamura Y, Matsunaga T. Production of antioxidant vitamins, beta-carotene, vitamin C, and vitamin E, by two-step culture of Euglena gracilis Z. Biotechnol Bioeng 2012; 53:185-90. [PMID: 18633963 DOI: 10.1002/(sici)1097-0290(19970120)53:2<185::aid-bit8>3.0.co;2-k] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Euglena gracilis Z is one of the few microorganisms which simultaneously produces antioxidant vitamins such as beta-carotene and vitamins C and E. Photoheterotrophically cultured E. gracilis Z produced larger levels of biomass but with a lower content of antioxidant vitamins than photoautotrophically grown cultures. For efficient production of these vitamins, a two-step culture was performed. Cells were grown photoheterotrophically and then transferred to photoautotrophic conditions. When E. gracilis Z cells were grown in fed-batch culture under photoheterotrophic conditions, their density reached 19 g/L after 145 h. Subsequent transfer of these cells to photoautotrophic conditions increased vitamin content, enhancing the total vitamin yields, which were 71.0 mg/L of beta-carotene, 30.1 mg/L of vitamin E, and 86.5 mg/L of vitamin C. (c) 1997 John Wiley & Sons, Inc.
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Erhardt A, Akula N, Schumacher J, Czamara D, Karbalai N, Müller-Myhsok B, Mors O, Borglum A, Kristensen AS, Woldbye DPD, Koefoed P, Eriksson E, Maron E, Metspalu A, Nurnberger J, Philibert RA, Kennedy J, Domschke K, Reif A, Deckert J, Otowa T, Kawamura Y, Kaiya H, Okazaki Y, Tanii H, Tokunaga K, Sasaki T, Ioannidis JPA, McMahon FJ, Binder EB. Replication and meta-analysis of TMEM132D gene variants in panic disorder. Transl Psychiatry 2012; 2:e156. [PMID: 22948381 PMCID: PMC3565207 DOI: 10.1038/tp.2012.85] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
A recent genome-wide association study in patients with panic disorder (PD) identified a risk haplotype consisting of two single-nucleotide polymorphisms (SNPs) (rs7309727 and rs11060369) located in intron 3 of TMEM132D to be associated with PD in three independent samples. Now we report a subsequent confirmation study using five additional PD case-control samples (n = 1670 cases and n = 2266 controls) assembled as part of the Panic Disorder International Consortium (PanIC) study for a total of 2678 cases and 3262 controls in the analysis. In the new independent samples of European ancestry (EA), the association of rs7309727 and the risk haplotype rs7309727-rs11060369 was, indeed, replicated, with the strongest signal coming from patients with primary PD, that is, patients without major psychiatric comorbidities (n = 1038 cases and n = 2411 controls). This finding was paralleled by the results of the meta-analysis across all samples, in which the risk haplotype and rs7309727 reached P-levels of P = 1.4e-8 and P = 1.1e-8, respectively, when restricting the samples to individuals of EA with primary PD. In the Japanese sample no associations with PD could be found. The present results support the initial finding that TMEM132D gene contributes to genetic susceptibility for PD in individuals of EA. Our results also indicate that patient ascertainment and genetic background could be important sources of heterogeneity modifying this association signal in different populations.
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Matsumaru N, Shirai K, Kawamura Y, Yokota Y, Kumada K, Toyoda I, Ogura S. Quantified temporal changes of heart rate variability when developing SIRS. Crit Care 2012. [PMCID: PMC3504910 DOI: 10.1186/cc11796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Kawamura Y, Matsuo H, Chiba T, Nagamori S, Nakayama A, Inoue H, Utsumi Y, Oda T, Nishiyama J, Kanai Y, Shinomiya N. Pathogenic GLUT9 mutations causing renal hypouricemia type 2 (RHUC2). NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2012; 30:1105-11. [PMID: 22132964 DOI: 10.1080/15257770.2011.623685] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Abstract
Renal hypouricemia (MIM 220150) is an inherited disorder characterized by low serum uric acid levels and has severe complications such as exercise-induced acute renal failure and urolithiasis. We have previously reported that URAT1/SLC22A12 encodes a renal urate-anion exchanger and that its mutations cause renal hypouricemia type 1 (RHUC1). With the large health-examination database of the Japan Maritime Self-Defense Force, we found two missense mutations (R198C and R380W) of GLUT9/SLC2A9 in hypouricemia patients. R198C and R380W occur in highly conserved amino acid motifs in the "sugar transport proteins signatures" that are observed in GLUT family transporters. The corresponding mutations in GLUT1 (R153C and R333W) are known to cause GLUT1 deficiency syndrome because arginine residues in this motif are reportedly important as the determinants of the membrane topology of human GLUT1. Therefore, on the basis of membrane topology, the same may be true of GLUT9. GLUT9 mutants showed markedly reduced urate transport in oocyte expression studies, which would be the result of the loss of positive charges in those conserved amino acid motifs. Together with previous reports on GLUT9 localization, our findings suggest that these GLUT9 mutations cause renal hypouricemia type 2 (RHUC2) by their decreased urate reabsorption on both sides of the renal proximal tubule cells. However, a previously reported GLUT9 mutation, P412R, was unlikely to be pathogenic. These findings also enable us to propose a physiological model of the renal urate reabsorption via GLUT9 and URAT1 and can lead to a promising therapeutic target for gout and related cardiovascular diseases.
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Kawamura Y, Ohashi M, Asahito H, Takahashi Y, Kojima S, Yoshikawa T. Posterior reversible encephalopathy syndrome in a child with post-transplant HHV-6B encephalitis. Bone Marrow Transplant 2012; 47:1381-2. [DOI: 10.1038/bmt.2012.42] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Ohmori K, Kawamura Y. Cell transformation activities of abietic acid and dehydroabietic acid: safety assessment of possible contaminants in paper and paperboard for food contact use. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2011; 26:568-73. [PMID: 19680931 DOI: 10.1080/02652030802471221] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Abietic acid (AA) and dehydroabietic acid (DHA) have been detected in virgin paper products and recycled paper products used for food packaging. In order to evaluate the cell transformation activities of AA and DHA, the Bhas 42 cell-transformation assay for initiation and promotion was carried out. Tested in the initiation stage, AA and DHA did not significantly increase transformation frequencies. On the other hand, both chemicals induced transformed foci dose dependently at the promotion stage. The highest transformed foci density induced by AA was about 13 foci/well at 60 nmol ml(-1), and that of DHA was about 16 foci/well at 40 nmol ml(-1) (solvent control = 2.3 +/- 1.4 foci/well). The present results suggest that AA and DHA may have tumour-promoting potential.
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Sonne C, Bott-Fluegel L, Hauck S, Michalk F, Lesevic H, Demetz G, Braun D, Hausleiter J, Schoemig A, Kolb C, Hirayama Y, Tsukamoto M, Hotta D, Yokoyama H, Kikuchi K, Ohori K, Sato N, Kawamura Y, Hasebe N, Kaladaridis A, Bramos D, Skaltsiotis I, Kottis G, Antoniou A, Matthaios I, Agrios I, Vasiladiotis N, Pamboucas C, Toumanidis S, Minati M, Cavarretta E, De Ruvo E, Rebecchi M, Sciarra L, Matera S, Fratini S, Zuccaro L, Lioy E, Calo' L, Esposito C, Chinali M, D' Asaro M, Toscano A, Iacobelli R, Del Pasqua A, Di Clemente S, Parisi F, Pongiglione G, Rinelli G, Djordjevic-Dikic A, Nikcevic G, Raspopovic S, Jovanovic V, Tesic M, Djordjevic S, Milasinovic G, Gurel E, Tigen K, Karaahmet T, Dundar C, Guler A, Fotbolcu H, Basaran Y, Risum N, Williams E, Khouri M, Jackson K, Olsen N, Jons C, Storm K, Velazquez EJ, Kisslo J, Sogaard P, Separovic Hanzevacki J, Baricevic Z, Pezo Nikolic B, Lovric D, Ivanac Vranesic I, Ernst A, Milicic D, Jurin H, Esmaeilzadeh M, Salehi Omran M, Maleki M, Haghjoo M, Noohi F, Ojaghi Haghighi Z, Sadeghpour A, Nakhostin Davari P, Bakhshandeh Abkenar H. Moderated Poster Sessions 4: Velocity and deformation imaging in electrophysiology * Friday 9 December 2011, 14:00-18:00 * Location: Moderated Poster Area. EUROPEAN JOURNAL OF ECHOCARDIOGRAPHY 2011. [DOI: 10.1093/ejechocard/jer215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Yokota S, Hirayama T, Hirano K, Kaneko R, Toyoda S, Kawamura Y, Hirabayashi M, Hirabayashi T, Yagi T. Identification of the cluster control region for the protocadherin-beta genes located beyond the protocadherin-gamma cluster. J Biol Chem 2011; 286:31885-95. [PMID: 21771796 DOI: 10.1074/jbc.m111.245605] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The clustered protocadherins (Pcdhs), Pcdh-α, -β, and -γ, are transmembrane proteins constituting a subgroup of the cadherin superfamily. Each Pcdh cluster is arranged in tandem on the same chromosome. Each of the three Pcdh clusters shows stochastic and combinatorial expression in individual neurons, thus generating a hugely diverse set of possible cell surface molecules. Therefore, the clustered Pcdhs are candidates for determining neuronal molecular diversity. Here, we showed that the targeted deletion of DNase I hypersensitive (HS) site HS5-1, previously identified as a Pcdh-α regulatory element in vitro, affects especially the expression of specific Pcdh-α isoforms in vivo. We also identified a Pcdh-β cluster control region (CCR) containing six HS sites (HS16, 17, 17', 18, 19, and 20) downstream of the Pcdh-γ cluster. This CCR comprehensively activates the expression of the Pcdh-β gene cluster in cis, and its deletion dramatically decreases their expression levels. Deleting the CCR nonuniformly down-regulates some Pcdh-γ isoforms and does not affect Pcdh-α expression. Thus, the CCR effect extends beyond the 320-kb region containing the Pcdh-γ cluster to activate the upstream Pcdh-β genes. Thus, we concluded that the CCR is a highly specific regulatory unit for Pcdh-β expression on the clustered Pcdh genomic locus. These findings suggest that each Pcdh cluster is controlled by distinct regulatory elements that activate their expression and that the stochastic gene regulation of the clustered Pcdhs is controlled by the complex chromatin architecture of the clustered Pcdh locus.
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Watanabe E, Sobue Y, Osaka M, Ozaki Y, Kodama I, Tanabe T, Aizawa Y, Lousinha A, Oliveira M, Silva Cunha P, Nogueira Silva M, Lopes J, Silva S, Carlos I, Cruz Ferreira R, Chiladakis I, Kalogeropoulos A, Koutsogiannis N, Zagkli F, Arvanitis P, Alexopoulos D, Sepsi M, Kadlecova V, Zeman M, Sindler M, Gaillyova R, Vasku A, Kozak M, Krivan L, Talib A, Sato N, Talib A, Nakagawa N, Sakamoto N, Takeuchi T, Kawamura Y, Hasebe N. Non invasive of risk stratification sudden cardiac death. Europace 2011. [DOI: 10.1093/europace/eur216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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69
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Niibe K, Kawamura Y, Araki D, Morikawa S, Miura K, Suzuki S, Shimmura S, Sunabori T, Mabuchi Y, Nagai Y, Nakagawa T, Okano H, Matsuzaki Y. Purified mesenchymal stem cells are an efficient source for iPS cell induction. PLoS One 2011; 6:e17610. [PMID: 21412425 PMCID: PMC3055883 DOI: 10.1371/journal.pone.0017610] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2011] [Accepted: 01/31/2011] [Indexed: 12/13/2022] Open
Abstract
Background Induced pluripotent stem (iPS) cells are generated from mouse and human somatic cells by the forced expression of defined transcription factors. Although most somatic cells are capable of acquiring pluripotency with minimal gene transduction, the poor efficiency of cell reprogramming and the uneven quality of iPS cells are still important problems. In particular, the choice of cell type most suitable for inducing high-quality iPS cells remains unclear. Methodology/Principal Findings Here, we generated iPS cells from PDGFRα+ Sca-1+ (PαS) adult mouse mesenchymal stem cells (MSCs) and PDGFRα− Sca-1− osteo-progenitors (OP cells), and compared the induction efficiency and quality of individual iPS clones. MSCs had a higher reprogramming efficiency compared with OP cells and Tail Tip Fibroblasts (TTFs). The iPS cells induced from MSCs by Oct3/4, Sox2, and Klf4 appeared to be the closest equivalent to ES cells by DNA microarray gene profile and germline-transmission efficiency. Conclusions/Significance Our findings suggest that a purified source of undifferentiated cells from adult tissue can produce high-quality iPS cells. In this context, prospectively enriched MSCs are a promising candidate for the efficient generation of high-quality iPS cells.
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Aoki K, Itoh Y, Kawamura Y, Inoue A, Masumoto T. Nanocrystalline TiAl Compacts Prepared by Hddr and Hot Pressing. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-460-153] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
ABSTRACTNanocrystalline TiAl powder was formed by the modified HDDR (hydrogenation-disproportion-dehydrogenaton-recombination) method utilizing ball milling in a hydrogen atmosphere. That is, TiAl compound powder decomposed into TiH2 and Al-rich TiAl powders by mechanical grinding in a hydrogen atmosphere (HD process). Dehydrogenaton-recombination (realloying) resulted in the formation of nanocrystalline TiAl powder when heated to about 700 K in an argon atmosphere (DR process). Almost fully dense nanocrystalline TiAl compacts were prepared by a combination of HDDR and hot-pressing at 873 K which is lower than the usual consolidation temperature by about 300 K. The TiAl compact thus made was brittle in the as-pressed state but showed compressive ductility after annealing.
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Yamashita T, Inoue H, Okumura K, Kodama I, Aizawa Y, Atarashi H, Ohe T, Ohtsu H, Kato T, Kamakura S, Kumagai K, Kurachi Y, Koretsune Y, Saikawa T, Sakurai M, Sato T, Sugi K, Nakaya H, Hirai M, Hirayama A, Fukatani M, Mitamura H, Yamazaki T, Watanabe E, Ogawa S, Katoh T, Igawa O, Matsumoto N, Yamashita T, Kaneko Y, Watanabe E, Ogawa S, Osaka T, Fujii E, Niwano S, Yoshioka K, Kato M, Okazaki O, Kusano K, Okuyama Y, Furushima H, Suzuki M, Noda T, Kawara T, Sato T, Kamakura S, Endoh Y, Kumagai K, Hiyoshi Y, Ishiyama T, Ohtsuka T, Matsumoto M, Chishaki A, Shinohara T, Shirayama T, Koretsune Y, Yokoyama E, Ajiki K, Fujio K, Sugi K, Yamakawa T, Yusu S, Inoue H, Kawamura Y, Hayano M, Date T, Mizusawa Y, Kobayashi Y, Satomi K, Imai Y, Atarashi H, Fukunami M, Yokoshiki H, Betsuyaku T, Okumura K, Takeda H, Matsumoto K, Okishige K, Tagawa M, Hirai M, Okazaki H. Randomized trial of angiotensin II-receptor blocker vs. dihydropiridine calcium channel blocker in the treatment of paroxysmal atrial fibrillation with hypertension (J-RHYTHM II Study). Europace 2010; 13:473-9. [DOI: 10.1093/europace/euq439] [Citation(s) in RCA: 91] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Fukaya M, Tayama K, Tamaki T, Tagami H, Okumura H, Kawamura Y, Beppu T. Cloning of the Membrane-Bound Aldehyde Dehydrogenase Gene of Acetobacter polyoxogenes and Improvement of Acetic Acid Production by Use of the Cloned Gene. Appl Environ Microbiol 2010; 55:171-6. [PMID: 16347820 PMCID: PMC184073 DOI: 10.1128/aem.55.1.171-176.1989] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A genomic clone bank of Acetobacter polyoxogenes NBI1028 constructed in Escherichia coli by use of the expression vector pUC18 was screened with antibody raised against membrane-bound aldehyde dehydrogenase (ALDH; 75 kilodaltons [kDa]) from A. polyoxogenes NBI1028. A clone that synthesized a 41-kDa protein cross-reactive with anti-ALDH antibody was isolated. For cloning of the full-length ALDH structural gene, a cosmid gene bank was screened by Southern blot hybridization with the cloned DNA as a probe, and subcloning from the positive cosmid clone was performed with shuttle vector pMV24. Plasmid pAL25, containing the full-length ALDH structural gene, was isolated and expressed in both E. coli and Acetobacter aceti to produce a fused protein (78 kDa) with a short NH(2)-terminal beta-galactosidase peptide. pAL25 conferred ALDH production on a mutant of A. aceti lacking the enzyme activity. Transformation of A. aceti subsp. xylinum NBI2099 with pAL25 caused 2- and 1.4-fold increases in the production rate and in the maximum concentration of acetic acid in submerged fermentation, respectively.
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Hirakawa M, Ikeda K, Akuta N, Kawamura Y, Hosaka T, Kobayashi M, Suzuki F, Suzuki Y, Arase Y, Kumada H. Effect of IFN therapy and amino acid substitutions in the hepatitis C virus (HCV) core region on hepatocarcinogenesis in HCV-related cirrhotic patients. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.4009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Kawamura Y, Ikeda K, Hirakawa M, Hosaka T, Akuta N, Kobayashi M, Saitoh S, Suzuki F, Suzuki Y, Kumada H. A new classification of dynamic CT images predictive of malignant characteristics of hepatocellular carcinoma. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e14598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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75
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Matsuda K, Tabata S, Kawamura Y, Kurosawa T, Yoshie N, Taniyama H. Ectopic ossification with haematopoietic bone marrow in the heart valves of a crossbred heavy horse. J Comp Pathol 2010; 143:213-7. [PMID: 20167331 DOI: 10.1016/j.jcpa.2010.01.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2009] [Revised: 01/04/2010] [Accepted: 01/12/2010] [Indexed: 11/25/2022]
Abstract
Ectopic bone formation in the left atrioventricular valves and cardiac fibroskeleton, with systemic circulatory disturbance, is reported in a 4-year-old crossbred heavy horse. Microscopically, there was fibrosis, chondral metaplasia and mature bone, with bone marrow within the left atrioventricular cusps and in the annuli of the aortic and right atrioventricular valves.
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