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DNA fragmentation induced in human fibroblasts by 56Fe ions: experimental data and Monte Carlo simulations
https://repo.qst.go.jp/records/45508
https://repo.qst.go.jp/records/45508f355b8a5-ea92-4dd3-9f08-a8b745322e66
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2009-05-14 | |||||
タイトル | ||||||
タイトル | DNA fragmentation induced in human fibroblasts by 56Fe ions: experimental data and Monte Carlo simulations | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
Campa, A
× Campa, A× Belli, Mauro× Furusawa, Yoshiya× et.al× 古澤 佳也 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | We studied the DNA fragmentation induced in human fibroblasts by iron-ion beams of two different energies: 115 MeV/nucleon and 414 MeV/nucleon. Experimental data were obtained in the fragment size range 1-5700 kbp; Monte Carlo simulations were performed with the PARTRAC code; data analysis was also performed through the Generalized Broken Stick (GBS) model. The comparison between experimental and simulated data for the number of fragments produced in two different size ranges, 1-23 kbp and 23-5700 kbp, gives a satisfactory agreement for both radiation qualities. The Monte Carlo simulations also allow the counting of fragments outside the experimental range: The number of fragments smaller than 1 kbp is large for both beams, although with a strong difference between the two cases. As a consequence, we can compute different RBEs depending on the size range considered for the fragment counting. The PARTRAC evaluation takes into account fragments of all sizes, while the evaluation from the experimental data considers only the fragments in the range of 1-5700 kbp. When the PARTRAC evaluation is restricted to this range, the agreement between experimental and computed RBE values is again good. When fragments smaller than 1 kbp are also considered, the RBE increases considerably, since gamma rays produce a small number of such fragments. The analysis performed with the GBS model proved to be quite sensitive to showing, with a phenomenological single parameter, variations in double-strand break (DSB) correlation. | |||||
書誌情報 |
Radiation Research 巻 171, 号 4, p. 438-445, 発行日 2009-04 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0033-7587 |