Abstract：
PURPOSE:Public concern about radiation protection of the environment and non-human species is increasing. The potential impact of chronic gamma radiation on the bacterial community in a rice paddy ecosystem was investigated. MATERIALS AND METHODS:Paddy field microcosm samples were continuously exposed at a dose rate of 1 Gy day(-1) for five days after which the bacterial community structures in them were compared with those of unirradiated control samples by denaturing gradient gel electrophoresis (DGGE) of the 16S ribosomal ribonucleic acid (rRNA) gene. Dissolved ions in ponding waters of the microcosm samples were determined by ion chromatography. RESULTS:The DGGE band profiles were clearly different between the control and exposure samples. Sequencing of selected DGGE bands revealed that a specific species of the genus Clostridium and of the genus Massilia were grown under radiation exposure. Additionally, the concentrations of sulphate ion in the ponding water of the microcosm samples increased under radiation exposure. Concentrations of Na(+), Ca(2+), and F(-) inversely decreased. CONCLUSIONS:The data presented suggest that chronic gamma radiation affects the bacterial community structure and material cycles in the rice paddy ecosystem.
journal_name
Int J Radiat Bioljournal_title
International journal of radiation biologyauthors
Ishii N,Fuma S,Tagami K,Honma-Takeda S,Shikano Sdoi
10.3109/09553002.2010.549534subject
Has Abstractpub_date
2011-07-01 00:00:00pages
663-72issue
7eissn
0955-3002issn
1362-3095journal_volume
87pub_type
杂志文章abstract：PURPOSE:The present work summarises the history and current status of research into the importance of cancer stem cells for radiobiological research and for clinical radiation oncology. An effort is made to differentiate clonogenicity from stemness of cancer cells. CONCLUSION:In radiooncology, cancer stem cells have b...
journal_title：International journal of radiation biology
pub_type： 杂志文章,评审
doi：10.1080/09553000902836404
更新日期：2009-05-01 00:00:00
abstract：PURPOSE:To develop a reproducible single-cell gel electrophoresis assay for DNA damage and repair in buccal mucosa and sublingual exfoliated cells. MATERIALS AND METHODS:Buccal mucosa and sublingual cells and lymphocytes from six individuals (three males, three females, aged 34-45 years) were challenged with increasin...
journal_title：International journal of radiation biology
pub_type： 杂志文章
doi：10.1080/09553000410001723866
更新日期：2004-07-01 00:00:00
abstract：PURPOSE:To investigate whether mobile phone radiation might affect snail nociception, employing radiofrequency (RF) electromagnetic fields (EMF) which, to our knowledge, have hitherto not been studied in a snail model. Exposure to extremely low frequency (ELF) magnetic fields has however been shown to significantly aff...
journal_title：International journal of radiation biology
pub_type： 杂志文章
doi：10.3109/09553002.2012.644257
更新日期：2012-03-01 00:00:00
abstract：PURPOSE:The extreme radiotoxicity of Auger electrons and their exquisite capacity to irradiate specific molecular sites has prompted scientists to extensively investigate their radiobiological effects. Their efforts have been punctuated by quadrennial international symposia that have focused on biophysical aspects of A...
journal_title：International journal of radiation biology
pub_type： 杂志文章,评审
doi：10.1080/09553000802395527
更新日期：2008-12-01 00:00:00
abstract：PURPOSE:Solar energy has a number of short- and long-term detrimental effects on skin that can result in several skin disorders. The aim of this review is to summarise current knowledge on endogenous systems within the skin for protection from solar radiation and present research findings to date, on the exogenous opti...
journal_title：International journal of radiation biology
pub_type： 杂志文章,评审
doi：10.3109/09553002.2010.501842
更新日期：2010-12-01 00:00:00
abstract：PURPOSE:Many studies have shown that exposure to radiofrequency radiation (RFR) could activate cellular signal transduction pathways. In the present research, we investigated the effects of exposure to a 1.8-GHz RFR at different intensities on epidermal growth factor (EGF) receptor clustering and phosphorylation in hum...
journal_title：International journal of radiation biology
pub_type： 杂志文章
doi：10.3109/09553002.2011.634882
更新日期：2012-03-01 00:00:00
abstract：:Intact Chinese hamster ovary cells were exposed to the restriction endonucleases (REs) AluI or BamHI. In metaphase spreads from these cells, 300 breakpoints per RE were localized in G-banded chromosome type aberrations (dicentrics, translocations, rings, terminal and interstitial deletions). The majority of breakpoint...
journal_title：International journal of radiation biology
pub_type： 杂志文章
doi：10.1080/09553009514551401
更新日期：1995-10-01 00:00:00
abstract：PURPOSE:To determine the contribution of intra-alveolar cells as opposed to cells fixed in the interstitium in the development of radiation-induced lung injury. MATERIALS AND METHODS:C3H/HeN mice were irradiated to the thorax with various doses of radiation. The cellular composition and cytokine production were assess...
journal_title：International journal of radiation biology
pub_type： 杂志文章
doi：10.1080/0955300031000076894
更新日期：2003-03-01 00:00:00
abstract：PURPOSE:This study evaluates early changes in human mesenchymal stem cells (MSC) isolated from dental pulp and periodontal ligament after γ-irradiation and the effect of ataxia-telangiectasia mutated (ATM) inhibition. METHODS:MSC were irradiated with 2 and 20 Gy by (60)Co. For ATM inhibition, specific inhibitor KU5593...
journal_title：International journal of radiation biology
pub_type： 杂志文章
doi：10.3109/09553002.2013.775530
更新日期：2013-07-01 00:00:00
abstract：:The dose-rate effect has been the topic of extensive radiobiological studies and has important implications in radiation therapy and in the field of radiation protection. Three examples will be discussed: two in radiation therapy and one in protection. First, continuous low dose-rate interstitial brachytherapy may be ...
journal_title：International journal of radiation biology
pub_type： 杂志文章,评审
doi：10.1080/09553009114550531
更新日期：1991-03-01 00:00:00
abstract：PURPOSE:This review examines the evidence for the hypothesis that epigenetics are involved in the initiation and perpetuation of radiation-induced genomic instability (RIGI). CONCLUSION:In addition to the extensively studied targeted effects of radiation, it is now apparent that non-targeted delayed effects such as RI...
journal_title：International journal of radiation biology
pub_type： 杂志文章,评审
doi：10.3109/09553002.2010.522686
更新日期：2011-02-01 00:00:00
abstract：PURPOSE:The aim of this research was to demonstrate the effects of 50 Hz sinusoidal extremely low frequency of magnetic fields (ELF-MF) on preincubated chicken embryo hearts at histopathological, biochemical, and ultrastructural levels. MATERIALS AND METHODS:Ninety healthy fertilized eggs were divided into six groups ...
journal_title：International journal of radiation biology
pub_type： 杂志文章
doi：10.3109/09553002.2013.754556
更新日期：2013-04-01 00:00:00
abstract：PURPOSE:To evaluate and compare cytotoxic and mutational effects of graded doses of gamma-rays and 4He++ ions at different LET values (nominally 80 and 123 keV/microm) in V79 cells. MATERIALS AND METHODS:4He++ ion beams at 80 and 123 keV/microm were supplied by the 7 MV Van de Graaff CN accelerator of the INFN-LNL in ...
journal_title：International journal of radiation biology
pub_type： 杂志文章
doi：10.1080/09553000210146572
更新日期：2002-09-01 00:00:00
abstract：PURPOSE:To examine the heat sensitivity of DNA-dependent protein kinase (DNA-PK) activity in a variety of cultured mouse, hamster and human cell lines. MATERIALS AND METHODS:Eight cell lines, which have been routinely used in our laboratory, were examined. Cells were heated at 44.0 +/- 0.05 degrees C and DNA-PK activi...
journal_title：International journal of radiation biology
pub_type： 杂志文章
doi：10.1080/09553000310001596959
更新日期：2003-08-01 00:00:00
abstract：PURPOSE:To describe the design and dosimetric characterization of a simple and economical small animal irradiator. MATERIALS AND METHODS:A high dose rate (HDR) (192)Ir brachytherapy source from a commercially available afterloader was used with a 1.3 cm thick tungsten collimator to provide sharp beam penumbra suitable...
journal_title：International journal of radiation biology
pub_type： 杂志文章
doi：10.3109/09553002.2014.922719
更新日期：2014-10-01 00:00:00
abstract：PURPOSE:In radiation biology, rats are often irradiated, but the precise dose distributions are often lacking, particularly in areas that receive scatter radiation. We used a non-dedicated set of resources to calculate detailed dose distributions, including doses to peripheral organs well outside of the primary field, ...
journal_title：International journal of radiation biology
pub_type： 杂志文章
doi：10.3109/09553002.2013.791407
更新日期：2013-09-01 00:00:00
abstract：PURPOSE:This review is a contribution to the memory of Dr William (Bill) Morgan and highlights an area of research and deliberation that he considered extremely important in support of the setting of protective radiation dose limits. Biological research has generally played a minor role in the estimation of adverse hea...
journal_title：International journal of radiation biology
pub_type： 杂志文章,评审
doi：10.1080/09553002.2017.1290848
更新日期：2017-10-01 00:00:00
abstract：PURPOSE:To determine the relationships between the frequencies of radiation-induced chromosomal alterations and the extent of apoptosis in G0 human lymphocytes. MATERIAL AND METHODS:G0 human peripheral blood lymphocytes (HPBL) were X or gamma-irradiated, in the presence or absence of the repair inhibitor cytosine arab...
journal_title：International journal of radiation biology
pub_type： 杂志文章
doi：10.1080/09553000500303690
更新日期：2005-08-01 00:00:00
abstract：PURPOSE:Adverse effects on human health caused by electromagnetic fields (EMF) associated with the use of mobile phones, particularly among young people, are increasing all the time. The potential deleterious effects of EMF exposure resulting from mobile phones being used in close proximity to the brain require particu...
journal_title：International journal of radiation biology
pub_type： 杂志文章
doi：10.1080/09553002.2016.1206223
更新日期：2016-10-01 00:00:00
abstract：PURPOSE:Cells derived from individuals in which the ataxia telangiectasia (ATM) gene is mutated are hypersensitive to ionizing radiation. Whether differences in ATM protein levels exist among human malignant glioma cell lines and whether such differences are correlated with cellular radiosensitivity were determined. M...
journal_title：International journal of radiation biology
pub_type： 杂志文章
doi：10.1080/095530098141591
更新日期：1998-08-01 00:00:00
abstract：PURPOSE:We introduce and evaluate a high throughput biodosimetry test system (REDI-Dx) suitable for testing of thousands of potential radiation victims following a mass scale nuclear event caused by detonation of a nuclear device or a nuclear accident, as part of an overall strategy for effective medical management of ...
journal_title：International journal of radiation biology
pub_type： 杂志文章
doi：10.1080/09553002.2018.1532615
更新日期：2020-01-01 00:00:00
abstract：:A comparison has been made of the in vitro light-activated drug cytotoxicities of two different porphyrin compounds, Photofrin II and TPPS4. An early passage human colon adenocarcinoma cell line, WiDr, has been exposed to either drug for 24 h, the excess drug washed from the cells and the cells irradiated with light u...
journal_title：International journal of radiation biology
pub_type： 杂志文章
doi：10.1080/09553008814552061
更新日期：1988-10-01 00:00:00
abstract：PURPOSE:In order to understand the molecular mechanism of nucleobase damage caused by ultrasoft X-ray irradiation, guanine radicals have been studied using an X-band EPR (electron paramagnetic resonance) spectrometer installed in a synchrotron soft X-ray beamline. MATERIALS AND METHODS:Guanine pellets were irradiated ...
journal_title：International journal of radiation biology
pub_type： 杂志文章
doi：10.1080/09553000400017689
更新日期：2004-11-01 00:00:00
abstract：:Induction of mutations to 6-thioguanine resistance (TGr) by gamma-rays at three different dose-rates and molecular changes in the HPRT gene were studied in human lymphoblastoid WIL2-NS cells. Mutant induction showed a curvilinear dose-response for acute irradiation (30 Gy/h). The total mutant frequency was lower after...
journal_title：International journal of radiation biology
pub_type： 杂志文章
doi：10.1080/095530096145201
更新日期：1996-08-01 00:00:00
abstract：:In the last decade the 'comet assay' or 'single cell gel electrophoresis assay' has been established as a sensitive method for the detection of DNA damage and the measurement of its recovery. The results published in the literature have often been obtained with different methods for comet structure measurement. In mos...
journal_title：International journal of radiation biology
pub_type：
doi：10.1080/095530097143220
更新日期：1997-10-01 00:00:00
abstract：:A/J and C57BL/6J mice, strains which differ in susceptibility to chemical-induced lung tumours, were examined for differential sensitivity to radon-induced lung cancer. Sixty weeks after exposure to 952 WLM radon (3.34 J h1 m-3), no lung tumours were found in the control, sham- (one dust-) exposed, or radon-exposed C5...
journal_title：International journal of radiation biology
pub_type： 杂志文章
doi：10.1080/095530097144184
更新日期：1997-03-01 00:00:00
abstract：PURPOSE:The assessment of biological effects caused by radiation exposure has been currently carried out with the linear-quadratic (LQ) model as an extension of the linear non-threshold (LNT) model. In this study, we suggest a new mathematical model named as SeaSaw (SS) model, which describes proliferation and cell dea...
journal_title：International journal of radiation biology
pub_type： 杂志文章
doi：10.1080/09553002.2021.1854487
更新日期：2020-12-15 00:00:00
abstract：:One of the important temporal stages of radiation action in cellular systems is the chemical phase, where oxygen fixation reactions compete with chemical repair reactions involving reducing agents such as GSH. Using the gas explosion technique it is possible to follow the kinetics of these fast (greater than 1 ms) rea...
journal_title：International journal of radiation biology
pub_type： 杂志文章
doi：10.1080/09553009214551571
更新日期：1992-06-01 00:00:00
abstract：:The role of protein kinase C in radiation-induced death of thymocytes was studied. For this purpose murine thymocytes were irradiated and incubated for 6 h at 37 degrees C and afterwards the fraction of fragmented DNA was measured. Results indicate that radiation-induced DNA fragmentation can be prevented by adding th...
journal_title：International journal of radiation biology
pub_type： 杂志文章
doi：10.1080/09553009214551471
更新日期：1992-05-01 00:00:00
abstract：:Cells use substrates such as glucose and glutamine to provide energy for repair of radiation damage. Glutaminolysis and glycolysis were inhibited by aminooxyacetic acid (AOAA) and 2-deoxyglucose (2DG), respectively, to inhibit metabolism of these substrates in order to determine the effect on radiation response of CHO...
journal_title：International journal of radiation biology
pub_type： 杂志文章
doi：10.1080/095530098142419
更新日期：1998-03-01 00:00:00
