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CsCl-supplemented diet to evaluate the effects of low dose-rate exposureTanaka, Sota; Kinouchi, Tadatoshi*; Fujii, Tsuguru*; Imanaka, Tetsuji*; Takahashi, Tomoyuki*; Fukutani, Satoshi*; Maki, Daisuke*; Notomi, Akihiro*; Takahashi, Sentaro*
Scientific Reports (Internet), 10, p.16055_1 - 16055_7, 2020/09
Times Cited Count：7 Percentile：49.75(Multidisciplinary Sciences)Since the Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident, morphological abnormalities of the lepidopteran insects have been reported. However, it is unclear whether the abnormalities were caused directly by radiation because they did not study on absorbed dose and dose-effect relationship. In this study, we conducted an internal exposure experiment on silkworm using CsCl-supplemented artificial diet and estimated the absorbed dose to evaluate the morphological abnormalities in silkworm. The ratio of wing to whole body of pupae was compared between the CsCl-exposured and control groups and no significant differences were observed between the groups. This result suggest that morphological abnormalities in lepidopterans are unlikely due to direct radiation effects from Cs contamination after the FDNPP accident.
Ueda, Daisuke*; Shirai, Koji*; Funayama, Tomoo; Sakashita, Tetsuya; Yokota, Yuichiro; Kobayashi, Yasuhiko
JAEA-Review 2014-050, JAEA Takasaki Annual Report 2013, P. 84, 2015/03
In this study, we investigated the effects of irradiation to the silkworm eggs at various developmental stages. First, we tried the irradiation to the unfertilized eggs (at 1.5 hour after oviposition). At this stage, the female pronucleus and the sperm nucleus are observed in the eggs, but not fertilized. After irradiation, the irradiated eggs stopped the development after fertilization. About 2 hours after, the egg restarted the nuclear cleavage. This result indicates the DNA damage on pronuleus cannot prevent the fertilization. We also investigated the effects of irradiation to the egg at the nuclear cleavage stage (at 6 hour after oviposition). The egg also stopped the development after irradiation, but the duration time of the developmental arrest was almost two times longer (about 4 hours) than that of the egg irradiated at fertilization.
Kobayashi, Yasuhiko; Kiguchi, Kenji*
Isotope News, (593), p.9 - 12, 2003/09
no abstracts in English
Tu, Z.; Kobayashi, Yasuhiko; Kiguchi, Kenji*; Watanabe, Hiroshi
Nuclear Instruments and Methods in Physics Research B, 206, p.591 - 595, 2003/05
no abstracts in English
Tu, Z.; Kobayashi, Yasuhiko; Kiguchi, Kenji*; Watanabe, Hiroshi; Yamamoto, Kazuo*
Journal of Radiation Research, 43(3), p.269 - 275, 2002/11
Times Cited Count：11 Percentile：32.16(Biology)no abstracts in English
, by localized irradiation of heavy ion microbeamsKiguchi, Kenji*; Kinjo, Y.*; Masahashi, K.*; Tu, Z.; Tamura, Hajime*; Shirai, K.*; Kanekatsu, Rensuke*; Kobayashi, Yasuhiko; Taguchi, Mitsumasa; Watanabe, Hiroshi
JAERI-Review 2000-024, TIARA Annual Report 1999, p.51 - 53, 2000/10
no abstracts in English
Kiguchi, Kenji*; Kobayashi, Yasuhiko
Hoshasen To Sangyo, (85), p.30 - 36, 2000/03
no abstracts in English
Kobayashi, Yasuhiko; Taguchi, Mitsumasa; Watanabe, Hiroshi; Yamamoto, Kazuo*; Yamasaki, Shuhei*; Tu, Z. L.*; Kinjo, Y.*; Kiguchi, Kenji*
Proceedings of 11th International Congress of Radiation Research (ICRR-11), 2, p.182 - 186, 2000/00
no abstracts in English
; Morphological changes of the nuclei and cells after spot irradiationKiguchi, Kenji*; Shima, T.*; Kinjo, Y.*; Tu, Z. L.*; Yamasaki, Shuhei*; Kobayashi, Yasuhiko; Taguchi, Mitsumasa; Watanabe, Hiroshi
JAERI-Review 99-025, TIARA Annual Report 1998, p.53 - 55, 1999/10
no abstracts in English
Tu, Z. L.*; Shirai, Koji*; Kanekatsu, Rensuke*; Kiguchi, Kenji*; Kobayashi, Yasuhiko; Taguchi, Mitsumasa; Watanabe, Hiroshi
Nihon Sanshigaku Zasshi, 68(6), p.491 - 500, 1999/00
no abstracts in English
Tu, Z. L.*; Yamasaki, Shuhei*; Shirai, Koji*; Kanekatsu, Rensuke*; Kiguchi, Kenji*; Kobayashi, Yasuhiko; Taguchi, Mitsumasa; Watanabe, Hiroshi
Nihon Sanshigaku Zasshi, 68(6), p.443 - 453, 1999/00
no abstracts in English
