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  1. Article ; Online: A Multicenter Study of Docetaxel at a Dose of 100 mg/m

    Hirata, Taizo / Ozaki, Shinji / Tabata, Masahiro / Iwamoto, Takayuki / Hinotsu, Shiro / Hamada, Akinobu / Motoki, Takayuki / Nogami, Tomohiro / Shien, Tadahiko / Taira, Naruto / Matsuoka, Junji / Doihara, Hiroyoshi

    Internal medicine (Tokyo, Japan)

    2020  Volume 60, Issue 8, Page(s) 1183–1190

    Abstract: ... at a dose of 100 mg/m ...

    Abstract Objective This study examined the pharmacokinetics, safety and anti-tumor activity of docetaxel at a dose of 100 mg/m
    MeSH term(s) Adult ; Aged ; Antineoplastic Combined Chemotherapy Protocols ; Breast Neoplasms/drug therapy ; Docetaxel/therapeutic use ; Drug Administration Schedule ; Humans ; Japan/epidemiology ; Middle Aged ; Neoplasm Recurrence, Local/drug therapy ; Taxoids/therapeutic use
    Chemical Substances Taxoids ; Docetaxel (15H5577CQD)
    Language English
    Publishing date 2020-11-16
    Publishing country Japan
    Document type Journal Article ; Multicenter Study
    ZDB-ID 32371-8
    ISSN 1349-7235 ; 0021-5120 ; 0918-2918
    ISSN (online) 1349-7235
    ISSN 0021-5120 ; 0918-2918
    DOI 10.2169/internalmedicine.5089-20
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Cleavage of C-O and C-H bonds in ethers by a genuine Si[double bond, length as m-dash]O bond.

    Kobayashi, Ryo / Ishida, Shintaro / Iwamoto, Takeaki

    Dalton transactions (Cambridge, England : 2003)

    2021  Volume 50, Issue 4, Page(s) 1413–1421

    Abstract: ... observed for the hitherto-known electronically stabilised isolable Si[double bond, length as m-dash]O ... of the genuine Si[double bond, length as m-dash]O bond is a key interaction for the reaction. ...

    Abstract An isolable three-coordinate dialkylsilanone without substantial electronic stabilization reacts with several ethers resulting in the cleavage of the C-O or C-H and C-O bonds in the ethers which have not been observed for the hitherto-known electronically stabilised isolable Si[double bond, length as m-dash]O species. The formation of the Lewis base (DMAP and MTHP) complexes of the dialkylsilanone and the DFT calculations elucidated that the coordination of the ethereal oxygen atom to the Lewis acidic Si atom of the genuine Si[double bond, length as m-dash]O bond is a key interaction for the reaction.
    Language English
    Publishing date 2021-01-12
    Publishing country England
    Document type Journal Article
    ZDB-ID 1472887-4
    ISSN 1477-9234 ; 1364-5447 ; 0300-9246 ; 1477-9226
    ISSN (online) 1477-9234 ; 1364-5447
    ISSN 0300-9246 ; 1477-9226
    DOI 10.1039/d0dt04240d
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: ERK Plays a Role in Chromosome Alignment and Participates in M-Phase Progression.

    Iwamoto, Erika / Ueta, Natsumi / Matsui, Yuki / Kamijo, Keiju / Kuga, Takahisa / Saito, Youhei / Yamaguchi, Naoto / Nakayama, Yuji

    Journal of cellular biochemistry

    2016  Volume 117, Issue 6, Page(s) 1340–1351

    Abstract: ... in cell cycle progression, particularly during M-phase. Although, association with the mitotic spindle has been ... reported, the precise roles played by ERK in the dynamics of the mitotic spindle and in M-phase progression ... of ERK in M-phase progression and chromosome alignment. Fluorescence microscopy revealed that ERK is ...

    Abstract Cell division, a prerequisite for cell proliferation, is a process in which each daughter cell inherits one complete set of chromosomes. The mitotic spindle is a dedicated apparatus for the alignment and segregation of chromosomes. Extracellular signal-regulated kinase (ERK) 1/2 plays crucial roles in cell cycle progression, particularly during M-phase. Although, association with the mitotic spindle has been reported, the precise roles played by ERK in the dynamics of the mitotic spindle and in M-phase progression remain to be elucidated. In this study, we used MEK inhibitors U0126 and GSK1120212 to dissect the roles of ERK in M-phase progression and chromosome alignment. Fluorescence microscopy revealed that ERK is localized to the spindle microtubules in a manner independent of Src kinase, which is one of the kinases upstream of ERK at mitotic entry. ERK inhibition induces an increase in the number of prophase cells and a decrease in the number of anaphase cells. Time-lapse imaging revealed that ERK inhibition perturbs chromosome alignment, thereby preventing cells from entering anaphase. These results suggest that ERK plays a role in M-phase progression by regulating chromosome alignment and demonstrate one of the mechanisms by which the aberration of ERK signaling may produce cancer cells.
    MeSH term(s) Anaphase/drug effects ; Animals ; Butadienes/pharmacology ; Cell Line ; Chromosomes, Human/genetics ; Extracellular Signal-Regulated MAP Kinases/metabolism ; Humans ; Nitriles/pharmacology ; Prophase/drug effects ; Pyridones/pharmacology ; Pyrimidinones/pharmacology ; Spindle Apparatus/genetics ; Spindle Apparatus/metabolism ; Swine ; Time-Lapse Imaging
    Chemical Substances Butadienes ; Nitriles ; Pyridones ; Pyrimidinones ; U 0126 ; trametinib (33E86K87QN) ; Extracellular Signal-Regulated MAP Kinases (EC 2.7.11.24)
    Language English
    Publishing date 2016-06
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 392402-6
    ISSN 1097-4644 ; 0730-2312
    ISSN (online) 1097-4644
    ISSN 0730-2312
    DOI 10.1002/jcb.25424
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: M-mode Diagnosis of Tachyarrhythmia Can be Erroneous Owing to "Pseudo 1:1 Atrioventricular Movement" of the Atrial Wall Adjacent to the Atrioventricular Valve Possibly due to Atrioventricular Constraint: A Case of Neonatal Atrial Flutter With 2:1 Atrioventricular Conduction.

    Kawano, Akiko / Oshima, Ayumi / Masutani, Satoshi / Ishiguro, Akio / Iwamoto, Yoichi / Ishido, Hirotaka / Taketazu, Mio / Senzaki, Hideaki

    Clinical Medicine Insights. Cardiology

    2018  Volume 12, Page(s) 1179546818771700

    Abstract: M-mode echocardiography has been playing an important role in the diagnosis of fetal ... However, M-mode erroneously indicated 1:1 atrioventricular movement. While the movement of the atrial wall ...

    Abstract M-mode echocardiography has been playing an important role in the diagnosis of fetal tachyarrhythmia. We recently encountered a neonatal case of atrial flutter with 2:1 atrioventricular conduction. However, M-mode erroneously indicated 1:1 atrioventricular movement. While the movement of the atrial wall far from the atrioventricular valve was much faster than that of the ventricular wall, the atrial wall adjacent to the atrioventricular valve fully synchronized to that of the ventricular wall. Thus, to avoid this novel pitfall, it would be important to add an additional assessment focusing on the movement of the atrial wall far from the ventricle.
    Language English
    Publishing date 2018-04-18
    Publishing country United States
    Document type Case Reports
    ZDB-ID 2575256-X
    ISSN 1179-5468
    ISSN 1179-5468
    DOI 10.1177/1179546818771700
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Heteroaryldisilenes: heteroaryl groups serve as electron acceptors for Si[double bond, length as m-dash]Si double bonds in intramolecular charge transfer transitions.

    Kosai, Tomoyuki / Ishida, Shintaro / Iwamoto, Takeaki

    Dalton transactions (Cambridge, England : 2003)

    2017  Volume 46, Issue 34, Page(s) 11271–11281

    Abstract: ... length as m-dash]Si double bonds. ...

    Abstract Although many stable disilenes (silicon-silicon doubly-bonded compounds) containing organic π-electron systems have been reported, stable disilenes with heteroaromatic groups remain rare. Herein, we report the synthesis of monodisilenyl-substituted thiophene 1, anthracene 4, acridine 5, and mesitylene 7 and bis(disilenyl)-substituted thiophene 2, 2,2'-bithiophene 3, and anthracene 6via reactions of dialkylmesityldisilenide 8 with the corresponding haloarenes. Disilenes 1-7 show absorption bands with contributions of intramolecular charge transfer (ICT) transitions from π(disilene) to π*(aryl). In the ICT transitions, (bi)thienyl groups as well as anthryl and acrydinyl groups serve as electron acceptors for the Si[double bond, length as m-dash]Si double bonds.
    Language English
    Publishing date 2017-08-29
    Publishing country England
    Document type Journal Article
    ZDB-ID 1472887-4
    ISSN 1477-9234 ; 1364-5447 ; 0300-9246 ; 1477-9226
    ISSN (online) 1477-9234 ; 1364-5447
    ISSN 0300-9246 ; 1477-9226
    DOI 10.1039/c7dt02357j
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: A long-lived M-like state of phoborhodopsin that mimics the active state.

    Sudo, Yuki / Nishihori, Tatsuya / Iwamoto, Masayuki / Shimono, Kazumi / Kojima, Chojiro / Kamo, Naoki

    Biophysical journal

    2008  Volume 95, Issue 2, Page(s) 753–760

    Abstract: ... in the membrane that transmits a light signal to the sensory system in the cytoplasm. The M-state during ... in characterizing the M-state at physiological temperature has been slow because its lifetime is very short (decay ... hydroxylamine reacts selectively with the M-state, and we found that this stable photoproduct also reacts ...

    Abstract Pharaonis phoborhodopsin (ppR, also called pharaonis sensory rhodopsin II) is a seven transmembrane helical retinal protein. ppR forms a signaling complex with pharaonis Halobacterial transducer II (pHtrII) in the membrane that transmits a light signal to the sensory system in the cytoplasm. The M-state during the photocycle of ppR (lambda(max) = 386 nm) is one of the active (signaling) intermediates. However, progress in characterizing the M-state at physiological temperature has been slow because its lifetime is very short (decay half-time is approximately 1 s). In this study, we identify a highly stable photoproduct that can be trapped at room temperature in buffer solution containing n-octyl-beta-d-glucoside, with a decay half-time and an absorption maximum of approximately 2 h and 386 nm, respectively. HPLC analysis revealed that this stable photoproduct contains 13-cis-retinal as a chromophore. Previously, we reported that water-soluble hydroxylamine reacts selectively with the M-state, and we found that this stable photoproduct also reacts selectively with that reagent. These results suggest that the physical properties of the stable photoproduct (named the M-like state) are very similar with the M-state during the photocycle. By utilizing the high stability of the M-like state, we analyzed interactions of the M-like state and directly estimated the pK(a) value of the Schiff base in the M-like state. These results suggest that the dissociation constant of the ppR(M-like)/pHtrII complex greatly increases (to 5 muM) as the pK(a) value greatly decreases (from 12 to 1.5). The proton transfer reaction of ppR from the cytoplasmic to the extracellular side is proposed to be caused by this change in pK(a).
    MeSH term(s) Dose-Response Relationship, Radiation ; Halorhodopsins/chemistry ; Halorhodopsins/radiation effects ; Light ; Radiation Dosage ; Sensory Rhodopsins/chemistry ; Sensory Rhodopsins/radiation effects
    Chemical Substances Halorhodopsins ; Sensory Rhodopsins ; sensory rhodopsin II protein, archaeal
    Language English
    Publishing date 2008-03-28
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 218078-9
    ISSN 1542-0086 ; 0006-3495
    ISSN (online) 1542-0086
    ISSN 0006-3495
    DOI 10.1529/biophysj.107.125294
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Nucleic acid sensor for M. tuberculosis detection based on surface plasmon resonance.

    Prabhakar, Nirmal / Arora, Kavita / Arya, Sunil K / Solanki, Pratima R / Iwamoto, M / Singh, Harpal / Malhotra, B D

    The Analyst

    2008  Volume 133, Issue 11, Page(s) 1587–1592

    Abstract: ... bioelectrode have been estimated as 8.5 x 10(4) m(-1) s(-1) and 3.6 x 10(-3) s(-1), respectively. ...

    Abstract Cysteine modified NH(2)-end peptide nucleic acid (PNA) (24-mer) probe and 5'-thiol end labeled deoxyribonucleic acid (DNA) probes specific to Mycobacterium tuberculosis have been immobilized onto BK-7 gold coated glass plates for the detection of complementary, one-base mismatch, non-complementary targets and complementary target sequence in genomic DNA of Mycobacterium tuberculosis using a surface plasmon resonance (SPR) technique. The DNA/Au and PNA/Au bio-electrodes have been characterized using contact angle, atomic force microscopy (AFM), electrochemical impedance spectroscopy (EIS) and cyclic voltammetric (CV) techniques, respectively. It is revealed that there is a 252 millidegrees SPR angle change in the case of PNA immobilization and 205 millidegrees for DNA immobilization, indicating increased amount of immobilized PNA molecules. Hybridization studies reveal that there is no binding of the non-complementary target to DNA/Au and PNA/Au electrode. Compared to the DNA/Au bioelectrode, PNA/Au electrode has been found to be more efficient for detection of one-base mismatch sequence. The PNA/Au bioelectrode shows better detection limit (1.0 ng ml(-1)) over the DNA-Au bioelectrode (3.0 ng ml(-1)). The values of the association (k(a)) and dissociation rate constant (k(d)) for the complementary sequence in case of the PNA/Au bioelectrode have been estimated as 8.5 x 10(4) m(-1) s(-1) and 3.6 x 10(-3) s(-1), respectively.
    MeSH term(s) Biosensing Techniques ; DNA Probes ; DNA, Bacterial/analysis ; Gold ; Humans ; Microelectrodes ; Mycobacterium tuberculosis/genetics ; Surface Plasmon Resonance/methods ; Tuberculosis/diagnosis
    Chemical Substances DNA Probes ; DNA, Bacterial ; Gold (7440-57-5)
    Language English
    Publishing date 2008-11
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 210747-8
    ISSN 1364-5528 ; 0003-2654
    ISSN (online) 1364-5528
    ISSN 0003-2654
    DOI 10.1039/b808225a
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Relationship among collagen amount, distribution and architecture in the M. longissimus thoracis and M. pectoralis profundus from pigs.

    Nakamura, Y-N / Iwamoto, H / Ono, Y / Shiba, N / Nishimura, S / Tabata, S

    Meat science

    2011  Volume 64, Issue 1, Page(s) 43–50

    Abstract: The relative distribution of types I and III collagens and collagen fibre architecture in the perimysium and endomysium were compared to the longissimus thoracis (LT) and pectoralis profundus (PP) muscles in pigs. The LT muscle was composed of type I ... ...

    Abstract The relative distribution of types I and III collagens and collagen fibre architecture in the perimysium and endomysium were compared to the longissimus thoracis (LT) and pectoralis profundus (PP) muscles in pigs. The LT muscle was composed of type I myofibres 16.8%, IIA 12.9% and IIB 70.2%, and the PP muscle was 25.4, 23.1 and 51.5%, respectively. The total collagen amount differed significantly between the LT (2.66 mg/g) and PP (4.13 mg/g) muscle (P<0.001). On image analysis of the immunohistochemical preparations for types I and III collagens, the percentage area of the perimysium to the total collagen area showed significant differences between the muscles, where perimysial type I collagen occupied 25.4% of the total area in the LT muscle and 45.7% in the PP and perimysial type III 37.6 and 54.5%, respectively (P<0.001). In scanning electron microscopic photographs of the macerated preparation, very thick collagen layers composed of several fibre bands were observed in the perimysia of the PP muscle and appeared differently from the thinner perimysia with a few bands in the LT. Similar architecture of endomysial collagen fibres were observed around every myofibre type in the PP muscle and also in the LT. The fine surface cover of reticular collagen fibres around an adipocyte was shown as a global cast. These results suggested that the total collagen amount of the PP muscle was related mainly to the well developed perimysia composed of several collagen bands, indicating tougher meat compared with the LT muscle.
    Language English
    Publishing date 2011-10-29
    Publishing country England
    Document type Journal Article
    ZDB-ID 753319-6
    ISSN 1873-4138 ; 0309-1740
    ISSN (online) 1873-4138
    ISSN 0309-1740
    DOI 10.1016/s0309-1740(02)00135-3
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Book ; Online: GENERATION OF THE 30 M-MESH GLOBAL DIGITAL SURFACE MODEL BY ALOS PRISM

    Tadono, T. / Nagai, H. / Ishida, H. / Oda, F. / Naito, S. / Minakawa, K. / Iwamoto, H.

    eISSN: 2194-9034

    2016  

    Abstract: ... and its dataset consists of the global DSM dataset with 0.15 arcsec. pixel spacing (approx. 5 m mesh ... and ortho-rectified PRISM image with 2.5 m resolution. JAXA is also processing the global DSM with 1 ... arcsec. spacing (approx. 30 m mesh) based on the AW3D DSM dataset, and partially releasing it free ...

    Abstract Topographical information is fundamental to many geo-spatial related information and applications on Earth. Remote sensing satellites have the advantage in such fields because they are capable of global observation and repeatedly. Several satellite-based digital elevation datasets were provided to examine global terrains with medium resolutions e.g. the Shuttle Radar Topography Mission (SRTM), the global digital elevation model by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER GDEM). A new global digital surface model (DSM) dataset using the archived data of the Panchromatic Remote-sensing Instrument for Stereo Mapping (PRISM) onboard the Advanced Land Observing Satellite (ALOS, nicknamed “Daichi”) has been completed on March 2016 by Japan Aerospace Exploration Agency (JAXA) collaborating with NTT DATA Corp. and Remote Sensing Technology Center, Japan. This project is called “ALOS World 3D” (AW3D), and its dataset consists of the global DSM dataset with 0.15 arcsec. pixel spacing (approx. 5 m mesh) and ortho-rectified PRISM image with 2.5 m resolution. JAXA is also processing the global DSM with 1 arcsec. spacing (approx. 30 m mesh) based on the AW3D DSM dataset, and partially releasing it free of charge, which calls “ALOS World 3D 30 m mesh” (AW3D30). The global AW3D30 dataset will be released on May 2016. This paper describes the processing status, a preliminary validation result of the AW3D30 DSM dataset, and its public release status. As a summary of the preliminary validation of AW3D30 DSM, 4.40 m (RMSE) of the height accuracy of the dataset was confirmed using 5,121 independent check points distributed in the world.
    Subject code 910
    Language English
    Publishing date 2016-06-13
    Publishing country de
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  10. Article: FTIR spectroscopy of the M photointermediate in pharaonis rhoborhodopsin.

    Furutani, Yuji / Iwamoto, Masayuki / Shimono, Kazumi / Kamo, Naoki / Kandori, Hideki

    Biophysical journal

    2002  Volume 83, Issue 6, Page(s) 3482–3489

    Abstract: ... the Schiff base of the retinal chromophore is deprotonated upon formation of the M intermediate (ppR(M ... The present FTIR spectroscopy of ppR(M) revealed that the Schiff base proton is transferred to Asp-75 ... vibrations of Asn-105 were assigned for ppR and ppR(M). The common hydrogen-bonding alterations in Asn-105 ...

    Abstract pharaonis phoborhodopsin (ppR; also called pharaonis sensory rhodopsin II, psR-II) is a photoreceptor for negative phototaxis in Natronobacterium pharaonis. During the photocycle of ppR, the Schiff base of the retinal chromophore is deprotonated upon formation of the M intermediate (ppR(M)). The present FTIR spectroscopy of ppR(M) revealed that the Schiff base proton is transferred to Asp-75, which corresponds to Asp-85 in a light-driven proton-pump bacteriorhodopsin (BR). In addition, the C==O stretching vibrations of Asn-105 were assigned for ppR and ppR(M). The common hydrogen-bonding alterations in Asn-105 of ppR and Asp-115 of BR were found in the process from photoisomerization (K intermediate) to the primary proton transfer (M intermediate). These results implicate similar protein structural changes between ppR and BR. However, BR(M) decays to BR(N) accompanying a proton transfer from Asp-96 to the Schiff base and largely changed protein structure. In the D96N mutant protein of BR that lacks a proton donor to the Schiff base, the N-like protein structure was observed with the deprotonated Schiff base (called M(N)) at alkaline pH. In ppR, such an N-like (M(N)-like) structure was not observed at alkaline pH, suggesting that the protein structure of the M state activates its transducer protein.
    MeSH term(s) Archaeal Proteins/chemistry ; Archaeal Proteins/metabolism ; Archaeal Proteins/radiation effects ; Bacteriorhodopsins/chemistry ; Bacteriorhodopsins/radiation effects ; Carotenoids/chemistry ; Carotenoids/metabolism ; Carotenoids/radiation effects ; Escherichia coli/chemistry ; Escherichia coli/genetics ; Escherichia coli/metabolism ; Halorhodopsins ; Hydrogen-Ion Concentration ; Light ; Liposomes/chemistry ; Photochemistry/methods ; Protein Conformation ; Proton Pumps/chemistry ; Proton Pumps/genetics ; Proton Pumps/metabolism ; Recombinant Proteins/chemistry ; Recombinant Proteins/metabolism ; Recombinant Proteins/radiation effects ; Sensory Rhodopsins ; Spectroscopy, Fourier Transform Infrared/methods ; Structure-Activity Relationship ; Temperature
    Chemical Substances Archaeal Proteins ; Halorhodopsins ; Liposomes ; Proton Pumps ; Recombinant Proteins ; Sensory Rhodopsins ; sensory rhodopsin II protein, archaeal ; Carotenoids (36-88-4) ; Bacteriorhodopsins (53026-44-1)
    Language English
    Publishing date 2002-12-17
    Publishing country United States
    Document type Journal Article
    ZDB-ID 218078-9
    ISSN 1542-0086 ; 0006-3495
    ISSN (online) 1542-0086
    ISSN 0006-3495
    DOI 10.1016/s0006-3495(02)75347-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

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