Ryuichi Okayasu

4.3k total citations
113 papers, 3.7k citations indexed

About

Ryuichi Okayasu is a scholar working on Molecular Biology, Pulmonary and Respiratory Medicine and Cancer Research. According to data from OpenAlex, Ryuichi Okayasu has authored 113 papers receiving a total of 3.7k indexed citations (citations by other indexed papers that have themselves been cited), including 94 papers in Molecular Biology, 41 papers in Pulmonary and Respiratory Medicine and 36 papers in Cancer Research. Recurrent topics in Ryuichi Okayasu's work include DNA Repair Mechanisms (76 papers), Radiation Therapy and Dosimetry (37 papers) and Carcinogens and Genotoxicity Assessment (36 papers). Ryuichi Okayasu is often cited by papers focused on DNA Repair Mechanisms (76 papers), Radiation Therapy and Dosimetry (37 papers) and Carcinogens and Genotoxicity Assessment (36 papers). Ryuichi Okayasu collaborates with scholars based in Japan, United States and China. Ryuichi Okayasu's co-authors include George Iliakis, Akira Fujimori, Joel S. Bedford, Yoshiya Furusawa, Gabriel E. Pantelias, Robert L. Ullrich, Miho Noguchi, Sentaro Takahashi, Takamitsu A. Kato and Ryoichi Hirayama and has published in prestigious journals such as Journal of Biological Chemistry, PLoS ONE and Applied and Environmental Microbiology.

In The Last Decade

Ryuichi Okayasu

113 papers receiving 3.6k citations

Peers

Countries citing papers authored by Ryuichi Okayasu

Since Specialization

Citations

This map shows the geographic impact of Ryuichi Okayasu's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ryuichi Okayasu with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ryuichi Okayasu more than expected).

Fields of papers citing papers by Ryuichi Okayasu

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ryuichi Okayasu. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ryuichi Okayasu. The network helps show where Ryuichi Okayasu may publish in the future.

Co-authorship network of co-authors of Ryuichi Okayasu

This figure shows the co-authorship network connecting the top 25 collaborators of Ryuichi Okayasu. A scholar is included among the top collaborators of Ryuichi Okayasu based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Ryuichi Okayasu. Ryuichi Okayasu is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

#	Work	Indexed citations
1	Strategies to Enhance Radiosensitivity to Heavy Ion Radiation Therapy 2018 ·International Journal of Particle Therapy ·Younghyun Lee, Ryuichi Okayasu	2
2	STARLIFE—An International Campaign to Study the Role of Galactic Cosmic Radiation in Astrobiological Model Systems 2017 ·Astrobiology ·Ralf Moeller, Marina Raguse, Stefan Leuko, Thomas Berger, Christine E. Hellweg, Akira Fujimori, Ryuichi Okayasu, G. Horneck	44
3	TAS-116, a Novel Hsp90 Inhibitor, Selectively Enhances Radiosensitivity of Human Cancer Cells to X-rays and Carbon Ion Radiation 2016 ·Molecular Cancer Therapeutics ·Younghyun Lee, Shigeaki Sunada, Hirokazu Hirakawa, Akira Fujimori, Jac A. Nickoloff, Ryuichi Okayasu	22
4	The purine scaffold Hsp90 inhibitor PU-H71 sensitizes cancer cells to heavy ion radiation by inhibiting DNA repair by homologous recombination and non-homologous end joining 2016 ·Radiotherapy and Oncology ·Younghyun Lee, (unknown), Aya Masaoka, Shigeaki Sunada, Hirokazu Hirakawa, Akira Fujimori, Jac A. Nickoloff, Ryuichi Okayasu	26
5	Carbon ion beam is more effective to induce cell death in sphere-type A172 human glioblastoma cells compared with X-rays 2014 ·International Journal of Radiation Biology ·Momoko Takahashi, Hirokazu Hirakawa, (unknown), (unknown), Ryuichi Okayasu, Akira Fujimori	20
6	Radiosensitization of human lung cancer cells by the novel purine-scaffold Hsp90 inhibitor, PU-H71 2013 ·International Journal of Molecular Medicine ·Tatsuya Segawa, Yoshihiro Fujii, Aya Tanaka, (unknown), Ryuichi Okayasu, Ken Ohnishi, Nobuo Kubota	23
7	Selective Enhancing Effect of Early Mitotic Inhibitor 1 (Emi1) Depletion on the Sensitivity of Doxorubicin or X-ray Treatment in Human Cancer Cells 2013 ·Journal of Biological Chemistry ·N. SHIMIZU, Nakako Izumi Nakajima, Takaaki Tsunematsu, Ikuko Ogawa, Hidehiko Kawai, Ryoichi Hirayama, Akira Fujimori, Akiko Yamada, Ryuichi Okayasu, Naozumi Ishimaru, Takashi Takata, Yasusei Kudo	17
8	Evaluation of SCCVII tumor cell survival in clamped and non-clamped solid tumors exposed to carbon-ion beams in comparison to X-rays 2013 ·Mutation Research/Genetic Toxicology and Environmental Mutagenesis ·Ryoichi Hirayama, Akiko Uzawa, (unknown), Yoshitaka Matsumoto, Miho Noguchi, (unknown), (unknown), (unknown), Huizi Li, Yuki Kase, Naruhiro Matsufuji, Sachiko Koike, Shin‐ichiro Masunaga, Koichi Andō, Ryuichi Okayasu, Yoshiya Furusawa	28
9	Radiosensitization effect of poly(ADP‐ribose) polymerase inhibition in cells exposed to low and high liner energy transfer radiation 2012 ·Cancer Science ·Takahisa Hirai, Hidenori Shirai, Hiroaki Fujimori, Ryuichi Okayasu, (unknown), Mitsuko Masutani	59
10	Effects of Carbon Ion Beam on Putative Colon Cancer Stem Cells and Its Comparison with X-rays 2011 ·Cancer Research ·Xing Cui, (unknown), Hirohiko Tsujii, Takeshi Yasuda, Yoshitaka Matsumoto, Yoshiya Furusawa, Makoto Akashi, Tadashi Kamada, Ryuichi Okayasu	106
11	In vitro characterization of cells derived from chordoma cell line U-CH1 following treatment with X-rays, heavy ions and chemotherapeutic drugs 2011 ·Radiation Oncology ·Takamitsu A. Kato, (unknown), Mitsuru Uesaka, Akira Fujimori, Tadashi Kamada, Hirohiko Tsujii, Ryuichi Okayasu	31
12	Rejoining kinetics of G1-PCC breaks induced by different heavy-ion beams with a similar LET value 2010 ·Mutation Research/Genetic Toxicology and Environmental Mutagenesis ·Chizuru Tsuruoka, Yoshiya Furusawa, Kazunori Anzai, Ryuichi Okayasu, Masao Suzuki	8
13	ATM-Dependent Hyper-Radiosensitivity in Mammalian Cells Irradiated by Heavy Ions 2009 ·International Journal of Radiation OncologyBiologyPhysics ·Lian Xue, Dong Yu, Yoshiya Furusawa, Jianping Cao, Ryuichi Okayasu, Saijun Fan	38
14	Arsenic accumulation, elimination, and interaction with copper, zinc and manganese in liver and kidney of rats 2008 ·Food and Chemical Toxicology ·Xing Cui, Ryuichi Okayasu	47
15	Single extreme low dose/low dose rate irradiation causes alteration in lifespan and genome instability in primary human cells 2007 ·British Journal of Cancer ·Maki Okada, Atsushi Okabe, Y. Uchihori, Hisashi Kitamura, (unknown), (unknown), Masao Suzuki, Ryuichi Okayasu	21
16	Facilitated detection of chromosome break and repair at low levels of ionizing radiation by addition of wortmannin to G1-type PCC fusion incubation 2004 ·Mutation Research/Genetic Toxicology and Environmental Mutagenesis ·Maki Okada, (unknown), Ryuichi Okayasu	8
17	Induction of DNA double strand breaks by arsenite: comparative studies with DNA breaks induced by X-rays 2003 ·DNA repair ·Ryuichi Okayasu	18
18	Increased frequency of formation of interphase ring-chromosomes in radiosensitive irs-1 cells exposed to X-rays 1993 ·Mutation Research/DNA Repair ·Ryuichi Okayasu, Gabriel E. Pantelias, George Iliakis	14
19	Comparative studies on repair inhibition by AraA, AraC and aphidicolin of radiation induced dna and chromosome damage in rodent cells: Comparison with fixation of PLD 1989 ·International Journal of Radiation OncologyBiologyPhysics ·George Iliakis, Gabriel E. Pantelias, Ryuichi Okayasu, (unknown)	14
20	Radiosensitive Xrs-5 and Parental CHO Cells Show Identical DNA Neutral Filter Elution Dose—response: Implications for a Relationship between Cell Radiosensitivity and Induction of DNA Double-strand Breaks 1988 ·International Journal of Radiation Biology ·George Iliakis, Ryuichi Okayasu, (unknown)	49

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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