Keizo Takeshita

3.2k total citations · 1 hit paper
49 papers, 2.8k citations indexed

About

Keizo Takeshita is a scholar working on Biophysics, Organic Chemistry and Materials Chemistry. According to data from OpenAlex, Keizo Takeshita has authored 49 papers receiving a total of 2.8k indexed citations (citations by other indexed papers that have themselves been cited), including 27 papers in Biophysics, 20 papers in Organic Chemistry and 17 papers in Materials Chemistry. Recurrent topics in Keizo Takeshita's work include Electron Spin Resonance Studies (27 papers), Free Radicals and Antioxidants (13 papers) and Lanthanide and Transition Metal Complexes (12 papers). Keizo Takeshita is often cited by papers focused on Electron Spin Resonance Studies (27 papers), Free Radicals and Antioxidants (13 papers) and Lanthanide and Transition Metal Complexes (12 papers). Keizo Takeshita collaborates with scholars based in Japan, United States and China. Keizo Takeshita's co-authors include Robert C. MacDonald, Ruby I. MacDonald, Nanda K. Subbarao, Bert Ph. M. Menco, Toshihiko Ozawa, Hideo Utsumi, Junichi Ueda, Shoko Okazaki, Jin‐Yi Han and Kazunori Anzai and has published in prestigious journals such as Analytical Chemistry, Cancer Research and Chemical Communications.

In The Last Decade

Keizo Takeshita

47 papers receiving 2.7k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Small-volume extrusion apparatus for preparation of large, unilamellar vesicles

1991 1.3k citations Robert C. MacDonald, Robert C. MacDonald et al. Biochimica et Biophysica Acta (BBA) - Biomembranes profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Keizo Takeshita Japan	23	1.4k	546	446	397	294	49	2.8k
Marjeta Šentjurc Slovenia	33	1.2k 0.9×	531 1.0×	308 0.7×	356 0.9×	498 1.7×	126	3.2k
Gérard Déléris France	30	1.0k 0.7×	845 1.5×	402 0.9×	817 2.1×	392 1.3×	130	3.6k
Bernard Pucci France	31	1.7k 1.2×	203 0.4×	279 0.6×	880 2.2×	144 0.5×	147	2.9k
Kamilla Małek Poland	25	639 0.5×	766 1.4×	453 1.0×	156 0.4×	443 1.5×	111	2.7k
Antonino Natalello Italy	36	2.0k 1.5×	275 0.5×	442 1.0×	220 0.6×	443 1.5×	127	3.6k
Bernadette Byrne United Kingdom	35	3.6k 2.6×	165 0.3×	388 0.9×	293 0.7×	257 0.9×	134	5.3k
Krishnananda Chattopadhyay India	24	1.2k 0.9×	163 0.3×	647 1.5×	196 0.5×	282 1.0×	99	2.4k
Sherwin S. Lehrer United States	42	4.3k 3.2×	327 0.6×	783 1.8×	394 1.0×	195 0.7×	104	6.6k
Jakob R. Winther Denmark	39	3.3k 2.4×	156 0.3×	478 1.1×	276 0.7×	239 0.8×	103	4.9k
Mark Nitz Canada	38	2.8k 2.0×	370 0.7×	786 1.8×	1.1k 2.7×	715 2.4×	131	4.5k

Countries citing papers authored by Keizo Takeshita

Since Specialization

Citations

This map shows the geographic impact of Keizo Takeshita'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 Keizo Takeshita with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Keizo Takeshita more than expected).

Fields of papers citing papers by Keizo Takeshita

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Keizo Takeshita. 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 Keizo Takeshita. The network helps show where Keizo Takeshita may publish in the future.

Co-authorship network of co-authors of Keizo Takeshita

This figure shows the co-authorship network connecting the top 25 collaborators of Keizo Takeshita. A scholar is included among the top collaborators of Keizo Takeshita 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 Keizo Takeshita. Keizo Takeshita 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

Takeshita, Keizo, et al.. (2023). Protective effects of 2-aminoethylthiosulfuric acid and structurally analogous organosulfur compounds against ionizing radiation. Journal of Clinical Biochemistry and Nutrition. 72(2). 117–125. 2 indexed citations

Takeshita, Keizo, et al.. (2013). Nitroxyl Radicals Remarkably Enhanced the Superoxide Anion Radical-Induced Chemiluminescence of Cypridina Luciferin Analogues. Analytical Chemistry. 85(14). 6833–6839. 14 indexed citations

Iohara, Daisuke, Fumitoshi Hirayama, Keizo Takeshita, et al.. (2012). Evaluation of Photodynamic Activity of C60/2-Hydroxypropyl-β-Cyclodextrin Nanoparticles. Journal of Pharmaceutical Sciences. 101(9). 3390–3397. 22 indexed citations

Takeshita, Keizo, et al.. (2011). Effect of Cholesterol on Distribution of Stable, Hydrophobic Perchlorotriphenylmethyl Triethylester Radical Incorporated in Lecithin Liposomal Membranes. Chemical and Pharmaceutical Bulletin. 59(5). 624–628. 3 indexed citations

Takeshita, Keizo, Kumiko Kawaguchi, Megumi Ueno, et al.. (2010). Heterogeneity of Regional Redox Status and Relation of the Redox Status to Oxygenation in a Tumor Model, Evaluated Using Electron Paramagnetic Resonance Imaging. Cancer Research. 70(10). 4133–4140. 25 indexed citations

Kathirvelu, Velavan, Christopher Smith, Christopher Parks, et al.. (2008). Relaxation rates for spirocyclohexyl nitroxyl radicals are suitable for interspin distance measurements at temperatures up to about 125 K. Chemical Communications. 454–456. 36 indexed citations

Iyer, Arun K., Khaled Greish, Takahiro Seki, et al.. (2007). Polymeric micelles of zinc protoporphyrin for tumor targeted delivery based on EPR effect and singlet oxygen generation. Journal of drug targeting. 15(7-8). 496–506. 95 indexed citations

Takeshita, Keizo, et al.. (2006). Reaction ofpara-hydroxybenzoic acid esters with singlet oxygen in the presence of glutathione produces glutathione conjugates of hydroquinone, potent inducers of oxidative stress. Free Radical Research. 40(3). 233–240. 44 indexed citations

Anzai, Kazunori, Megumi Ueno, Akira Yoshida, et al.. (2005). Comparison of stable nitroxide, 3-substituted 2,2,5,5-tetramethylpyrrolidine-N-oxyls, with respect to protection from radiation, prevention of DNA damage, and distribution in mice. Free Radical Biology and Medicine. 40(7). 1170–1178. 15 indexed citations

10.

Nakanishi, Ikuo, Kei Ohkubo, Keizo Takeshita, et al.. (2005). Hydroxyl radical generation via photoreduction of a simple pyridine N-oxide by an NADH analogue. Organic & Biomolecular Chemistry. 3(18). 3263–3263. 9 indexed citations

11.

Takeshita, Keizo, et al.. (2005). In vivo generation of free radicals in the skin of live mice under ultraviolet light, measured by L-band EPR spectroscopy. Free Radical Biology and Medicine. 40(5). 876–885. 40 indexed citations

12.

Takeshita, Keizo, et al.. (2004). Hydroxyl Radical Generation Caused by the Reaction of Singlet Oxygen with a Spin Trap, DMPO, Increases Significantly in the Presence of Biological Reductants. Free Radical Research. 38(4). 385–392. 27 indexed citations

13.

Takeshita, Keizo & Toshihiko Ozawa. (2004). Recent Progress in In Vivo ESR Spectroscopy. Journal of Radiation Research. 45(3). 373–384. 46 indexed citations

14.

Saito, Keita, Keizo Takeshita, Junichi Ueda, & Toshihiko Ozawa. (2003). Two Reaction Sites of a Spin Label, TEMPOL (4-Hydroxy-2,2,6,6-tetramethylpiperidine-N-oxyl), with Hydroxyl Radical. Journal of Pharmaceutical Sciences. 92(2). 275–280. 39 indexed citations

15.

Ueda, Junichi, et al.. (2003). Singlet Oxygen-mediated Hydroxyl Radical Production in the Presence of Phenols: Whether DMPO-·OH Formation Really Indicates Production of ·OH?¶. Photochemistry and Photobiology. 77(2). 165–165. 53 indexed citations

16.

Utsumi, Hideo, Keizo Takeshita, Kazuhiro Ichikawa, et al.. (1996). In vivo ESR measurements of free radical reactions in living mice.. PubMed. 21(5). 293–5. 8 indexed citations

17.

Utsumi, Hideo, Kazuhiro Ichikawa, & Keizo Takeshita. (1995). In vivo ESR measurements of free radical reactions in living mice. Toxicology Letters. 82-83. 561–565. 32 indexed citations

18.

Takeshita, Keizo, Hideo Utsumi, & A. Hamada. (1993). Whole mouse measurement of paramagnetism-loss of nitroxide free radical in lung with a L-band ESR spectrometer.. PubMed. 29(1). 17–24. 22 indexed citations

19.

Subbarao, Nanda K., Ruby I. MacDonald, Ruby I. MacDonald, et al.. (1991). Characteristics of spectrin-induced leakage of extruded, phosphatidylserine vesicles. Biochimica et Biophysica Acta (BBA) - Biomembranes. 1063(1). 147–154. 32 indexed citations

20.

MacDonald, Robert C., Robert C. MacDonald, Ruby I. MacDonald, et al.. (1991). Small-volume extrusion apparatus for preparation of large, unilamellar vesicles. Biochimica et Biophysica Acta (BBA) - Biomembranes. 1061(2). 297–303. 1335 indexed citations breakdown →

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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