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Yamamoto T, Fujimoto T, Naito T, Nakazawa Y, Tamura M, Yakushi K, Ikemoto Y, Moriwaki T, Kato R. Charge and Lattice Fluctuations in Molecule-Based Spin Liquids. Sci Rep 2017; 7:12930. [PMID: 29018228 PMCID: PMC5635065 DOI: 10.1038/s41598-017-13118-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 09/19/2017] [Indexed: 11/10/2022] Open
Abstract
Spin liquid (SL) systems have been the subject of much attention recently, as they have been theoretically predicted to not freeze, even at 0 K. Despite extensive searches being made for such a system, only a few candidates have been found. All of these candidates share geometrical frustrations that are based on triangular lattices. We applied vibrational spectroscopy to one of the candidates of a molecule-based SL system, and we compared its results against three antiferromagnetic compounds and four charge-ordered compounds. All of their structural motifs belong to triangular lattices. The C=C stretching modes in the SL state indicated that there were charge and lattice fluctuations. These fluctuations were suppressed but non-negligible in the AF compounds. This finding is potentially significant, as it indicates that a hidden lattice and charge fluctuation are the driving force of a geometrical frustration, which eventually leads to a SL state.
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Sasaki S, Hashimoto K, Kobayashi R, Itoh K, Iguchi S, Nishio Y, Ikemoto Y, Moriwaki T, Yoneyama N, Watanabe M, Ueda A, Mori H, Kobayashi K, Kumai R, Murakami Y, Müller J, Sasaki T. Crystallization and vitrification of electrons in a glass-forming charge liquid. Science 2017; 357:1381-1385. [PMID: 28963251 DOI: 10.1126/science.aal3120] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Accepted: 08/23/2017] [Indexed: 11/03/2022]
Abstract
Charge ordering (CO) is a phenomenon in which electrons in solids crystallize into a periodic pattern of charge-rich and charge-poor sites owing to strong electron correlations. This usually results in long-range order. In geometrically frustrated systems, however, a glassy electronic state without long-range CO has been observed. We found that a charge-ordered organic material with an isosceles triangular lattice shows charge dynamics associated with crystallization and vitrification of electrons, which can be understood in the context of an energy landscape arising from the degeneracy of various CO patterns. The dynamics suggest that the same nucleation and growth processes that characterize conventional glass-forming liquids guide the crystallization of electrons. These similarities may provide insight into our understanding of the liquid-glass transition.
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Tamura T, Sakai D, Sugimoto N, Tokunaga S, Tsuji A, Ishida H, Otsu S, Moriwaki T, Satake H, Uchino K, Matsumoto S, Baba E, Sato M, Taniguchi H, Kishimoto J, Boku N, Hyodo I, Muro K. Predictive value of primary tumor location: Results from randomized phase II study of panitumumab + irinotecan versus cetuximab + irinotecan in patients with KRAS exon2 wild-type metastatic colorectal cancer (WJOG6510G). Ann Oncol 2017. [DOI: 10.1093/annonc/mdx393.109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Takayoshi K, Okamoto W, Hironaka S, Honma Y, Ebi H, Nakanishi R, Kajiwara T, Kudo T, Tamura T, Komatsu Y, Hara H, Naruge D, Moriwaki T, Miki I, Sudo T, Nomura S, Fujii S, Shitara K, Ohtsu A, Yoshino T. The nationwide cancer genome screening project in Japan SCRUM-Japan GI-SCREEN: Efficient identification of cancer genome alterations in advanced small intestine cancer. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx369.147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Higaki Y, Inutsuka Y, Sakamaki T, Terayama Y, Takenaka A, Higaki K, Yamada NL, Moriwaki T, Ikemoto Y, Takahara A. Effect of Charged Group Spacer Length on Hydration State in Zwitterionic Poly(sulfobetaine) Brushes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:8404-8412. [PMID: 28737401 DOI: 10.1021/acs.langmuir.7b01935] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Effect of alkyl chain spacer length between the charged groups (CSL) in zwitterionic poly(sulfobetaine) (PSB) brushes on the hydration state was investigated. PSB brushes with ethyl (PMAES), propyl (PMAPS), or butyl (PMABS) CSL were prepared by surface-initiated atom transfer radical polymerization on silicon wafers. Hydration states of the PSB brushes in aqueous solutions and/or humid vapor were investigated by contact angle measurement, infrared spectroscopy, AFM observation, and neutron reflectivity. The PSB brushes are swollen in humid air and deionized water due to the hydration of the charged groups leading to the reduction of hydrated PSB brushes/water interfacial free energy. The hydrated PSB brushes exhibit clear interface with low interfacial roughness due to networking of the PSB brush chains through association of the SBs. The hydrated PSB brushes produce diffusive swollen layer in the presence of NaCl because of the charge screening followed by SB dissociation by the bound ions. The ionic strength sensitivity in the hydration got more significant with increasing the CSL in SBs because of the augmentation in partial charge by charged group separation.
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Kubo S, Kogoma M, Inomata T, Sugimitsu H, Moriwaki T, Okazaki S. Formation de l’ozone par « effet couronne» sur une électrode très fine. ACTA ACUST UNITED AC 2017. [DOI: 10.1051/jcp/1987840087] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Sugimitsu H, Moriwaki T, Okazaki S. Analyse des caractéristiques d'un ozoneur avec un modèle d'avalanche d'électrons de townsend. ACTA ACUST UNITED AC 2017. [DOI: 10.1051/jcp/1984810355] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Sugimitsu H, Moriwaki T, Okazaki S. Réaction chimique de formation de l'ozone dans l'ozoneur. ACTA ACUST UNITED AC 2017. [DOI: 10.1051/jcp/1984810423] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Sugimitsu H, Moriwaki T, Okazaki S. Influence of gas pressure and composition on the rate of formation of ozone in an ozonizer. ACTA ACUST UNITED AC 2017. [DOI: 10.1051/jcp/1983800681] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Kogoma M, Okamura H, Sugimitsu H, Moriwaki T, Okazaki S. Synthèse de l'ozone par l'azote actif ou l'azote atomique dans l'ozoneur à air. ACTA ACUST UNITED AC 2017. [DOI: 10.1051/jcp/1984810513] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Terasaki I, Asai S, Taniguchi H, Okazaki R, Yasui Y, Ikemoto Y, Moriwaki T. Optical evidence for the spin-state disorder in LaCo 1-xRh xO 3. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2017; 29:235802. [PMID: 28497775 DOI: 10.1088/1361-648x/aa6ebc] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Accepted: 04/24/2017] [Indexed: 06/07/2023]
Abstract
We have measured the infrared reflectivity of single-crystalline samples of LaCo1-xRhxO3(x = 0, 0.05 and 0.10) from 10 to 300 K from 0.05 to 0.15 eV. We find that the optical phonons of the Co-O stretching mode depend on temperature and the Rh content. Analysis with three Lorentz oscillators reveals that the spin state of Co3+in LaCo1-xRhxO3can be understood in terms of a solid solution of low-spin- and high-spin-state Co3+ions, and the substituted Rh ion retains some fraction of the high-spin Co3+ions down to low temperature.
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Obata Y, Sano H, Ohta N, Moriwaki T, Ishida K, Uchida Y, Takayama K. Characterization of simple intercellular lipid model of atopic dermatitis stratum corneum containing sphingosine and sphinganine. J Dermatol Sci 2017. [DOI: 10.1016/j.jdermsci.2017.02.128] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Obata Y, Ohta N, Moriwaki T, Ishida K, Uchida Y, Takayama K. 429 The ratio of sphingosine to sphinganine in the stratum corneum determines lipid lamellar structure packing. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.02.448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Pejov L, Panda MK, Moriwaki T, Naumov P. Probing Structural Perturbation in a Bent Molecular Crystal with Synchrotron Infrared Microspectroscopy and Periodic Density Functional Theory Calculations. J Am Chem Soc 2017; 139:2318-2328. [DOI: 10.1021/jacs.6b11212] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Moriwaki T, Gosho M, Sugaya A, Yamada T, Yamamoto Y, Hyodo I. 187P Optimal treatment strategy of first-line oxaliplatin (Oxa)-containing therapy in metastatic colorectal cancer (mCRC): A trial-level meta-analysis. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw581.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Yamazaki K, Kito Y, Esaki T, Satake H, Taniguchi H, Tsuda T, Denda T, Moriwaki T, Mori K. 217TiP Dose-finding phase Ib study of FOLFOXIRI plus ramucirumabas first-line therapy for patients with metastatic colorectal cancer. Ann Oncol 2016. [DOI: 10.1016/s0923-7534(21)00374-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Yamazaki K, Kito Y, Esaki T, Satake H, Taniguchi H, Tsuda T, Denda T, Moriwaki T, Mori K. 217TiP Dose-finding phase Ib study of FOLFOXIRI plus ramucirumab as first-line therapy for patients with metastatic colorectal cancer. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw581.049] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Yoshino T, Shinozaki E, Yamazaki K, Nishina T, Komatsu Y, Baba H, Tsuji A, Yamaguchi K, Muro K, Sugimoto N, Tsuji Y, Moriwaki T, Esaki T, Hamada C, Tanase T, Ohtsu A. PD-014 Final survival results and onset of neutropenia as an indicator of therapeutic effect in phase 2 of TAS-102 vs placebo with metastatic colorectal cancer (J003-10040030). Ann Oncol 2016. [DOI: 10.1093/annonc/mdw200.14] [Citation(s) in RCA: 5] [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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Yamazaki K, Nagase M, Tamagawa H, Ueda S, Tamura T, Murata K, Eguchi Nakajima T, Baba E, Tsuda M, Moriwaki T, Esaki T, Tsuji Y, Muro K, Taira K, Denda T, Funai S, Shinozaki K, Yamashita H, Sugimoto N, Okuno T, Nishina T, Umeki M, Kurimoto T, Takayama T, Tsuji A, Yoshida M, Hosokawa A, Shibata Y, Suyama K, Okabe M, Suzuki K, Seki N, Kawakami K, Sato M, Fujikawa K, Hirashima T, Shimura T, Taku K, Otsuji T, Tamura F, Shinozaki E, Nakashima K, Hara H, Tsushima T, Ando M, Morita S, Boku N, Hyodo I. Randomized phase III study of bevacizumab plus FOLFIRI and bevacizumab plus mFOLFOX6 as first-line treatment for patients with metastatic colorectal cancer (WJOG4407G). Ann Oncol 2016; 27:1539-46. [PMID: 27177863 DOI: 10.1093/annonc/mdw206] [Citation(s) in RCA: 161] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Accepted: 05/09/2016] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND FOLFIRI and FOLFOX have shown equivalent efficacy for metastatic colorectal cancer (mCRC), but their comparative effectiveness is unknown when combined with bevacizumab. PATIENTS AND METHODS WJOG4407G was a randomized, open-label, phase III trial conducted in Japan. Patients with previously untreated mCRC were randomized 1:1 to receive either FOLFIRI plus bevacizumab (FOLFIRI + Bev) or mFOLFOX6 plus bevacizumab (mFOLFOX6 + Bev), stratified by institution, adjuvant chemotherapy, and liver-limited disease. The primary end point was non-inferiority of FOLFIRI + Bev to mFOLFOX6 + Bev in progression-free survival (PFS), with an expected hazard ratio (HR) of 0.9 and non-inferiority margin of 1.25 (power 0.85, one-sided α-error 0.025). The secondary end points were response rate (RR), overall survival (OS), safety, and quality of life (QoL) during 18 months. This trial is registered to the University Hospital Medical Information Network, number UMIN000001396. RESULTS Among 402 patients enrolled from September 2008 to January 2012, 395 patients were eligible for efficacy analysis. The median PFS for FOLFIRI + Bev (n = 197) and mFOLFOX6 + Bev (n = 198) were 12.1 and 10.7 months, respectively [HR, 0.905; 95% confidence interval (CI) 0.723-1.133; P = 0.003 for non-inferiority]. The median OS for FOLFIRI + Bev and mFOLFOX6 + Bev were 31.4 and 30.1 months, respectively (HR, 0.990; 95% CI 0.785-1.249). The best overall RRs were 64% for FOLFIRI + Bev and 62% for mFOLFOX6 + Bev. The common grade 3 or higher adverse events were leukopenia (11% in FOLFIRI + Bev/5% in mFOLFOX6 + Bev), neutropenia (46%/35%), diarrhea (9%/5%), febrile neutropenia (5%/2%), peripheral neuropathy (0%/22%), and venous thromboembolism (6%/2%). The QoL assessed by FACT-C (TOI-PFC) and FACT/GOG-Ntx was favorable for FOLFIRI + Bev during 18 months. CONCLUSION FOLFIRI plus bevacizumab was non-inferior for PFS, compared with mFOLFOX6 plus bevacizumab, as the first-line systemic treatment for mCRC. CLINICAL TRIALS NUMBER UMIN000001396.
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Ebihara T, Teshima K, Kondo T, Tagawa Y, Moriwaki T, Asahi S. Pharmacokinetics of TAK-475, a Squalene Synthase Inhibitor, in Rats and Dogs. Drug Res (Stuttg) 2016; 66:287-92. [DOI: 10.1055/s-0035-1569407] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Fukata N, Jevasuwan W, Ikemoto Y, Moriwaki T. Bonding and electronic states of boron in silicon nanowires characterized by an infrared synchrotron radiation beam. NANOSCALE 2015; 7:7246-7251. [PMID: 25812173 DOI: 10.1039/c5nr00427f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The infrared synchrotron radiation (IR-SR) beamline of SPring-8 as an IR light source was applied to characterize boron (B) atoms in silicon nanowires (SiNWs). The use of an IR-SR beam with much higher brilliance than conventional IR light sources and a wide range of wavenumbers from visible to far IR regions made it possible to detect a local vibrational mode of B in SiNWs. The use of this technique has also made it possible to detect other IR peaks related to transitions of a bound hole from the ground state of a B acceptor atom to excited states, clarifying the electronic state of B acceptors in SiNWs.
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Ichikawa W, Uehara K, Minamimura K, Tanaka C, Takii Y, Miyauchi H, Sadahiro S, Fujita K, Moriwaki T, Nakamura M, Takahashi T, Tsuji A, Shinozaki K, Morita S, Ando Y, Okutani Y, Sugihara M, Sugiyama T, Ohashi Y, Sakata Y. An internally and externally validated nomogram for predicting the risk of irinotecan-induced severe neutropenia in advanced colorectal cancer patients. Br J Cancer 2015; 112:1709-16. [PMID: 25880011 PMCID: PMC4430714 DOI: 10.1038/bjc.2015.122] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Revised: 02/16/2015] [Accepted: 03/07/2015] [Indexed: 02/08/2023] Open
Abstract
Background: In Asians, the risk of irinotecan-induced severe toxicities is related in part to UGT1A1*6 (UGT, UDP glucuronosyltransferase) and UGT1A1*28, variant alleles that reduce the elimination of SN-38, the active metabolite of irinotecan. We prospectively studied the relation between the UGT1A1 genotype and the safety of irinotecan-based regimens in Japanese patients with advanced colorectal cancer, and then constructed a nomogram for predicting the risk of severe neutropenia in the first treatment cycle. Methods: Safety data were obtained from 1312 patients monitored during the first 3 cycles of irinotecan-based regimen in a prospective observational study. In development of the nomogram, multivariable logistic regression analysis was used to test the associations of candidate factors to severe neutropenia in the first cycle. The final nomogram based on the results of multivariable analysis was constructed and validated internally using a bootstrapping technique and externally in an independent data set (n=350). Results: The UGT1A1 genotype was confirmed to be associated with increased risks of irinotecan-induced grade 3 or 4 neutropenia and diarrhoea. The final nomogram included type of regimen, administered dose of irinotecan, gender, age, UGT1A1 genotype, Eastern Cooperative Oncology Group performance status, pre-treatment absolute neutrophil count, and total bilirubin level. The model was validated both internally (bootstrap-adjusted concordance index, 0.69) and externally (concordance index, 0.70). Conclusions: Our nomogram can be used before treatment to accurately predict the probability of irinotecan-induced severe neutropenia in the first cycle of therapy. Additional studies should evaluate the effect of nomogram-guided dosing on efficacy in patients receiving irinotecan.
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Panda MK, Ghosh S, Yasuda N, Moriwaki T, Mukherjee GD, Reddy CM, Naumov P. Spatially resolved analysis of short-range structure perturbations in a plastically bent molecular crystal. Nat Chem 2014; 7:65-72. [DOI: 10.1038/nchem.2123] [Citation(s) in RCA: 232] [Impact Index Per Article: 23.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Accepted: 10/29/2014] [Indexed: 12/24/2022]
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Moriwaki T, Ishida H, Araki M, Endo S, Yoshida S, Kobayashi M, Hamano Y, Sugaya A, Shimoyamada M, Hasegawa N, Imanishi M, Ito Y, Sato D, Ishige K, Fukuda K, Abei M, Yamaguchi T, Hyodo I. A Phase I Study of Gemcitabine (Gem), Cisplatin (Cddp), and S-1 Combination in Untreated Patients (Pts) with Advanced Biliary Tract Cancer (Abtc). Ann Oncol 2014. [DOI: 10.1093/annonc/mdu334.110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Yamaguchi K, Hironaka S, Sugimoto N, Moriwaki T, Komatsu Y, Nishina T, Tsuji A, Nakajima T, Gotoh M, Machida N, Fuse N, Esaki T, Emi Y, Takinishi Y, Matsumoto S, Boku N, Baba H, Hyodo I. Randomized Phase Ii Study of S-1 Plus Oral Leucovorin (Sl) Versus Sl Plus Oxaliplatin (Sol) Versus S-1 Plus Cisplatin (Sp) in Patients with Advanced Gastric Cancer (Agc):Updated Overall Survival Data. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu334.10] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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