Okayasu R - Search Results

1

Induction of DNA DSB and its rejoining in clamped and non-clamped tumours after exposure to carbon ion beams in comparison to X rays.

Hirayama R, Uzawa A, Matsumoto Y, Noguchi M, Kase Y, Takase N, Ito A, Koike S, Ando K, Okayasu R, Furusawa Y. Hirayama R, et al. Among authors: okayasu r. Radiat Prot Dosimetry. 2011 Feb;143(2-4):508-12. doi: 10.1093/rpd/ncq478. Epub 2010 Dec 9. Radiat Prot Dosimetry. 2011. PMID: 21148587

2

Contributions of direct and indirect actions in cell killing by high-LET radiations.

Hirayama R, Ito A, Tomita M, Tsukada T, Yatagai F, Noguchi M, Matsumoto Y, Kase Y, Ando K, Okayasu R, Furusawa Y. Hirayama R, et al. Among authors: okayasu r. Radiat Res. 2009 Feb;171(2):212-8. doi: 10.1667/RR1490.1. Radiat Res. 2009. PMID: 19267547

3

Evaluation of SCCVII tumor cell survival in clamped and non-clamped solid tumors exposed to carbon-ion beams in comparison to X-rays.

Hirayama R, Uzawa A, Takase N, Matsumoto Y, Noguchi M, Koda K, Ozaki M, Yamashita K, Li H, Kase Y, Matsufuji N, Koike S, Masunaga S, Ando K, Okayasu R, Furusawa Y. Hirayama R, et al. Among authors: okayasu r. Mutat Res. 2013 Aug 30;756(1-2):146-51. doi: 10.1016/j.mrgentox.2013.05.008. Epub 2013 Jun 2. Mutat Res. 2013. PMID: 23735375

4

Lethal DNA Lesions Caused by Direct and Indirect Actions of X rays are Repaired via Different DSB Repair Pathways under Aerobic and Anoxic Conditions.

Hirayama R, Ito A, Uzawa A, Matsumoto Y, Noguchi M, Li H, Suzuki M, Ando K, Okayasu R, Hasegawa S, Furusawa Y. Hirayama R, et al. Among authors: okayasu r. Radiat Res. 2021 May 1;195(5):441-451. doi: 10.1667/RADE-20-00235.1. Radiat Res. 2021. PMID: 33721021

5

Repair of DNA damage induced by accelerated heavy ions in mammalian cells proficient and deficient in the non-homologous end-joining pathway.

Okayasu R, Okada M, Okabe A, Noguchi M, Takakura K, Takahashi S. Okayasu R, et al. Radiat Res. 2006 Jan;165(1):59-67. doi: 10.1667/rr3489.1. Radiat Res. 2006. PMID: 16392963

6

Inhibition of homologous recombination repair in irradiated tumor cells pretreated with Hsp90 inhibitor 17-allylamino-17-demethoxygeldanamycin.

Noguchi M, Yu D, Hirayama R, Ninomiya Y, Sekine E, Kubota N, Ando K, Okayasu R. Noguchi M, et al. Among authors: okayasu r. Biochem Biophys Res Commun. 2006 Dec 22;351(3):658-63. doi: 10.1016/j.bbrc.2006.10.094. Epub 2006 Oct 30. Biochem Biophys Res Commun. 2006. PMID: 17083915

7

The difference in LET and ion species dependence for induction of initially measured and non-rejoined chromatin breaks in normal human fibroblasts.

Tsuruoka C, Suzuki M, Hande MP, Furusawa Y, Anzai K, Okayasu R. Tsuruoka C, et al. Among authors: okayasu r. Radiat Res. 2008 Aug;170(2):163-71. doi: 10.1667/RR1279.1. Radiat Res. 2008. PMID: 18666815

8

Rejoining kinetics of G1-PCC breaks induced by different heavy-ion beams with a similar LET value.

Tsuruoka C, Furusawa Y, Anzai K, Okayasu R, Suzuki M. Tsuruoka C, et al. Among authors: okayasu r. Mutat Res. 2010 Aug 14;701(1):47-51. doi: 10.1016/j.mrgentox.2010.04.020. Epub 2010 Apr 24. Mutat Res. 2010. PMID: 20420934

9

Effects of carbon ion beam on putative colon cancer stem cells and its comparison with X-rays.

Cui X, Oonishi K, Tsujii H, Yasuda T, Matsumoto Y, Furusawa Y, Akashi M, Kamada T, Okayasu R. Cui X, et al. Among authors: okayasu r. Cancer Res. 2011 May 15;71(10):3676-87. doi: 10.1158/0008-5472.CAN-10-2926. Epub 2011 Mar 31. Cancer Res. 2011. PMID: 21454414

10

OH radicals from the indirect actions of X-rays induce cell lethality and mediate the majority of the oxygen enhancement effect.

Hirayama R, Ito A, Noguchi M, Matsumoto Y, Uzawa A, Kobashi G, Okayasu R, Furusawa Y. Hirayama R, et al. Among authors: okayasu r. Radiat Res. 2013 Nov;180(5):514-23. doi: 10.1667/RR13368.1. Epub 2013 Oct 21. Radiat Res. 2013. PMID: 24138483

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