RADIOISOTOPES
Online ISSN : 1884-4111
Print ISSN : 0033-8303
ISSN-L : 0033-8303
Search
Advanced search
OR
Browse
Search
Volume 52, Issue 12
Displaying 1-7 of 7 articles from this issue
Show all abstracts
    • |<
    • <
    • 1
    • >
    • >|
  • Isolation and Characteristics of Tritium Gas (Hydrogen) Oxidizing Soil Bacteria, Which Were Identified to Belong to the Genus Kitasatospora
    Maho KOMURO, Yusuke ICHIMASA, Michiko ICHIMASA
    2003 Volume 52 Issue 12 Pages 667-676
    Published: December 15, 2003
    Released on J-STAGE: March 01, 2011
    DOIhttps://doi.org/10.3769/radioisotopes.52.667
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    The tritium gas (HT) oxidizing bacteria were isolated from cultivated and natural field soils in Ibaraki prefecture ; 969 strains from the cultivated and 197 strains from the natural soils, respectively. Among theseHT-oxidizing isolates, 89% were actinomycetes, and its 13% were actinomycetes with meso-DAP in their cell wall. According to morphological and chemotaxomic analysis and, for some isolates, 16S rDNA sequence analysis, the 8 strains with gray colony color, smooth-surface spores, long spore chains, meso-DAP, galactose and mannose as whole-cell sugars, phospholipid type of II, non-mycolic acids andMK-9 (H6, 8) as the major menaquinone were identified to belong to the genus Kitasatospora.
    View full abstract
    Download PDF (2736K)
  • Effect of Anoxia on Choline Uptake and Release of Acetylcholine in Brain Slices Estimated With a Bioradiographic Technique Using [11C] Choline
    Toru SASAKI, Yoshihito FUNAKI, Masanori SHOZUSHIMA, Kazunori TERASAKI
    2003 Volume 52 Issue 12 Pages 677-685
    Published: December 15, 2003
    Released on J-STAGE: March 01, 2011
    DOIhttps://doi.org/10.3769/radioisotopes.52.677
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    The uptake of choline for the synthesis and release of acetylcholine and the metabolism of glucose under anoxic conditions was investigated in brain slices by bioradiography using [N-methyl-11C] choline ( [11C] choline) and [18F] 2-fluoro-2-deoxy-D-glucose ( [18F] FDG ) . [11C] Choline uptake and the release of accumulated11Cradioactivity in brain slices decreased with anoxic treatment, whereas [18F] FDG uptake increased. The decrease of [11C] choline uptake and the11Cradioactivity accumulated in striatal slices were recovered by acetyl-L-carnitine, an acetyl-donor. However, this effect was not seen in cerebral cortex. These results indicate that choline uptake for the synthesis and release of acetylcholine in brain are energy sensitive. The cholinergic dysfunction in ischemic brain might be improved by compensating for energy loss.
    View full abstract
    Download PDF (3202K)
  • Antitumor and Radiation Protection Effects of, β-1, 3-D-Glucan Extracted from Yeast (Saccharomyces cerevisiae)
    Akinobu YOSHIMURA, Takeo HASEGAWA, Hajime MONZEN, Hitoshi TAWARAYA, To ...
    2003 Volume 52 Issue 12 Pages 687-691
    Published: December 15, 2003
    Released on J-STAGE: March 01, 2011
    DOIhttps://doi.org/10.3769/radioisotopes.52.687
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    (Objectives) Various natural extracts are manufactured and on sale as health food products, which are raising popular consciousness of being ft, because they are considered effective or suppressible for cancer. in the current experiment, we measured the immunological activity, antitumor effects, and radioprotective effects of β-1, 3-D-glucan (Macroglucan) extracted from bread yeast.
    (Experimental Methods and Materials) Macroglucan of 0, 200, 400, and 800mg/kgwere administered intraperitoneally toC3H/HeJmice, respectively. The antitumor effects of Macroglucan were examined by measuringNKandLAKcell activity and tumor volume. Change in weight, survival, and microscopic manifestation of the intestine were evaluated in theC3H/HeJmice received total body irradiation to measure radioprotective effect of Macroglucan.
    (Results and Discussion) According to measurements of cellular cytotoxicity, levels ofNKandLAKcell activity were significantly higher in the group administered Macroglucan than in the control group. Macroglucan's role in immunological activity was suggested by the observed suppression of tumor growth in the Macroglucanadministered group. That group also experienced suppression of weight loss after irradiation in the experiment for radioprotection, and a consequent increase in the survival rate compared with the control group. Protective effects appeared in photomicrographs of the intestinal cells. These results confirmed Macroglucan's radioprotective effects. These effects may be related to the suppression of infection accompanying immunological activation due to Macroglucan administration, antioxidant activity, and radical scavenging capacity.
    View full abstract
    Download PDF (511K)
  • Development of the Radiation Control System for Personal Permission, Status and Record
    Atsushi MIYAMOTO, Hirohito YAMAZAKI, Hideyuki YUKI, Masashi NANAO, Yum ...
    2003 Volume 52 Issue 12 Pages 693-698
    Published: December 15, 2003
    Released on J-STAGE: March 01, 2011
    DOIhttps://doi.org/10.3769/radioisotopes.52.693
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    The radiation control system for automated locks, personal status, and recordings in the database was developed atLaboratory of Nuclear Science (LNS), Tohoku University.It consists of theProgrammable Logic Controllers (PLC) for the entrance system andWindows PC.ThePLCis controlled withFinsGatewayandCompoleton theWindows PC through an ethernet. TheSQL Server 2000was also installed on theWindows PC for database management. In the system, personal data such as destination, purpose, working hours and radiation dose are stored in the database. Furthermore, monthly report of personal data can easily be printed out by using the system. Personal status can be checked by a status monitor of the accelerator in the operation room and the entrance of the radiation controlled area, etc.
    View full abstract
    Download PDF (533K)
  • The Front of Radiation Imaging Technique (3) . Microfocus X-ray Sources and Application
    Michihiro ITO
    2003 Volume 52 Issue 12 Pages 699-703
    Published: December 15, 2003
    Released on J-STAGE: July 21, 2010
    DOIhttps://doi.org/10.3769/radioisotopes.52.699
    JOURNAL FREE ACCESS
    Download PDF (4189K)
  • The Front of Radiation Imaging Technique (3) . Developments and Applications of 4D-CT
    Masahiro ENDO
    2003 Volume 52 Issue 12 Pages 705-711
    Published: December 15, 2003
    Released on J-STAGE: December 16, 2010
    DOIhttps://doi.org/10.3769/radioisotopes.52.705
    JOURNAL FREE ACCESS
    Download PDF (4986K)
  • Reconstitution of Ribonuclease P from the Hyperthermophilic Archaeon Pyrococcus horikoshii
    Yoshiaki KOUZUMA, Makoto KIMURA
    2003 Volume 52 Issue 12 Pages 713-715
    Published: December 15, 2003
    Released on J-STAGE: July 21, 2010
    DOIhttps://doi.org/10.3769/radioisotopes.52.713
    JOURNAL FREE ACCESS
    Download PDF (1531K)
    • |<
    • <
    • 1
    • >
    • >|
feedback
 Top