Chikara Kojima

523 total citations
21 papers, 405 citations indexed

About

Chikara Kojima is a scholar working on Environmental Chemistry, Molecular Biology and Health, Toxicology and Mutagenesis. According to data from OpenAlex, Chikara Kojima has authored 21 papers receiving a total of 405 indexed citations (citations by other indexed papers that have themselves been cited), including 18 papers in Environmental Chemistry, 17 papers in Molecular Biology and 11 papers in Health, Toxicology and Mutagenesis. Recurrent topics in Chikara Kojima's work include Arsenic contamination and mitigation (18 papers), Retinoids in leukemia and cellular processes (13 papers) and Heavy Metal Exposure and Toxicity (9 papers). Chikara Kojima is often cited by papers focused on Arsenic contamination and mitigation (18 papers), Retinoids in leukemia and cellular processes (13 papers) and Heavy Metal Exposure and Toxicity (9 papers). Chikara Kojima collaborates with scholars based in Japan, United States and Zambia. Chikara Kojima's co-authors include Michael P. Waalkes, Teruaki Sakurai, Seiichiro Himeno, Kitao Fujiwara, Erik J. Tokar, Ronald P. Mason, Masayuki Ochiai, Zuzana Drobná, Miroslav Stýblo and Darío C. Ramírez and has published in prestigious journals such as JNCI Journal of the National Cancer Institute, British Journal of Pharmacology and Toxicology and Applied Pharmacology.

In The Last Decade

Chikara Kojima

19 papers receiving 394 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Chikara Kojima Japan 12 242 181 170 79 31 21 405
S. R. Frame United States 9 252 1.0× 106 0.6× 305 1.8× 23 0.3× 23 0.7× 20 637
K. Y. Jan Taiwan 9 209 0.9× 266 1.5× 155 0.9× 90 1.1× 37 1.2× 16 487
Adriana Sampayo‐Reyes Mexico 12 437 1.8× 319 1.8× 309 1.8× 141 1.8× 13 0.4× 22 669
Charles Packianathan United States 15 383 1.6× 253 1.4× 261 1.5× 92 1.2× 32 1.0× 24 771
Zhilong Gong Canada 9 340 1.4× 170 0.9× 242 1.4× 95 1.2× 23 0.7× 13 536
Rebecca A. Mason United States 7 129 0.5× 172 1.0× 106 0.6× 32 0.4× 26 0.8× 7 340
Ana María Salazar Mexico 10 150 0.6× 150 0.8× 175 1.0× 23 0.3× 29 0.9× 17 452
Eric Wildfang United States 7 243 1.0× 283 1.6× 152 0.9× 74 0.9× 103 3.3× 8 513
Stephen B. Waters United States 13 690 2.9× 402 2.2× 513 3.0× 207 2.6× 47 1.5× 16 953
Shigeyuki Takenaka Japan 15 248 1.0× 49 0.3× 191 1.1× 19 0.2× 47 1.5× 39 592

Countries citing papers authored by Chikara Kojima

Since Specialization
Citations

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

Fields of papers citing papers by Chikara Kojima

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Chikara Kojima

This figure shows the co-authorship network connecting the top 25 collaborators of Chikara Kojima. A scholar is included among the top collaborators of Chikara Kojima 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 Chikara Kojima. Chikara Kojima is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Tokar, Erik J., Chikara Kojima, & Michael P. Waalkes. (2013). Methylarsonous acid causes oxidative DNA damage in cells independent of the ability to biomethylate inorganic arsenic. Archives of Toxicology. 88(2). 249–261. 20 indexed citations
2.
Orihuela, Rubén, Chikara Kojima, Erik J. Tokar, et al.. (2013). Oxidative DNA damage after acute exposure to arsenite and monomethylarsonous acid in biomethylation-deficient human cells. Toxicology Mechanisms and Methods. 23(6). 389–395. 9 indexed citations
3.
Sun, Yang, Chikara Kojima, Colin F. Chignell, Ronald P. Mason, & Michael P. Waalkes. (2011). Arsenic transformation predisposes human skin keratinocytes to UV-induced DNA damage yet enhances their survival apparently by diminishing oxidant response. Toxicology and Applied Pharmacology. 255(3). 242–250. 23 indexed citations
4.
Jenkins, Stephen J., T.A. Cooper, Anuja Mathew, et al.. (2009). Effects of Syndyphalin-33 on immune function during a Salmonella challenge in recently weaned pigs.. Journal of Animal and Veterinary Advances. 8(12). 2562–2567. 1 indexed citations
5.
Kojima, Chikara, Darío C. Ramírez, Erik J. Tokar, et al.. (2009). Requirement of Arsenic Biomethylation for Oxidative DNA Damage. JNCI Journal of the National Cancer Institute. 101(24). 1670–1681. 91 indexed citations
6.
Sakurai, Takuya, Chikara Kojima, Yayoi Kobayashi, et al.. (2006). Toxicity of a trivalent organic arsenic compound, dimethylarsinous glutathione in a rat liver cell line (TRL 1215). British Journal of Pharmacology. 149(7). 888–897. 32 indexed citations
7.
Nagashima, Yuji, Kazuo Shiomi, Teruaki Sakurai, et al.. (2006). Caspase-independent apoptosis induced in rat liver cells by plancitoxin I, the major lethal factor from the crown-of-thorns starfish Acanthaster planci venom. Toxicon. 48(8). 1002–1010. 23 indexed citations
8.
Kojima, Chikara, Wei Qu, Michael P. Waalkes, Seiichiro Himeno, & Teruaki Sakurai. (2006). Chronic Exposure to Methylated Arsenicals Stimulates Arsenic Excretion Pathways and Induces Arsenic Tolerance in Rat Liver Cells. Toxicological Sciences. 91(1). 70–81. 26 indexed citations
9.
Sakurai, Teruaki, Chikara Kojima, Michael P. Waalkes, & Seiichiro Himeno. (2006). Effects of exogenous cysteine on inorganic and organic arsenicals‐induced cytolethality. Applied Organometallic Chemistry. 20(9). 549–556.
10.
Kojima, Chikara, Seiichiro Himeno, & Teruaki Sakurai. (2005). Chronic Methylated Arsenic-Exposure Induces Tolerance to the Acute Cytolethality of Inorganic Arsenate in Rat Liver Cells. 22. 59–66. 2 indexed citations
11.
Sakurai, Teruaki, et al.. (2005). Evaluation of immunotoxic and immunodisruptive effects of inorganic arsenite on human monocytes/macrophages. International Immunopharmacology. 6(2). 304–315. 40 indexed citations
12.
Sakurai, Teruaki, et al.. (2005). Evaluation ofin vivo acute immunotoxicity of arsenocholine, a trimethyl arsenic compound in seafood. Applied Organometallic Chemistry. 19(2). 226–230. 1 indexed citations
13.
Kojima, Chikara, Teruaki Sakurai, Michael P. Waalkes, & Seiichiro Himeno. (2005). Cytolethality of Glutathione Conjugates with Monomethylarsenic or Dimethylarsenic Compounds. Biological and Pharmaceutical Bulletin. 28(10). 1827–1832. 14 indexed citations
14.
Kojima, Chikara, Teruaki Sakurai, & Kitao Fujiwara. (2004). Studies on the Mechanisms of Arsenic Tolerance Induced in Rat Liver Cells by Chronic Exposure to Methylated Arsenicals. 21. 65–72. 2 indexed citations
15.
Sakurai, Teruaki, Masayuki Ochiai, Chikara Kojima, et al.. (2004). Preventive mechanism of cellular glutathione in monomethylarsonic acid-induced cytolethality. Toxicology and Applied Pharmacology. 206(1). 54–65. 26 indexed citations
16.
Kojima, Chikara, et al.. (2004). Evaluation of immunotoxic and immunodisruptive effects of inorganic arsenite on human monocytes/macrophages. International Immunopharmacology. 4(13). 1661–1673. 3 indexed citations
17.
Sakurai, Teruaki, et al.. (2004). Cellular glutathione prevents cytolethality of monomethylarsonic acid. Toxicology and Applied Pharmacology. 195(2). 129–141. 28 indexed citations
18.
Sakurai, Teruaki, et al.. (2003). Evaluation of in vivo acute immunotoxicity of a major organic arsenic compound arsenobetaine in seafood. International Immunopharmacology. 4(2). 179–184. 38 indexed citations
19.
Sakurai, Teruaki, Masayuki Ochiai, Chikara Kojima, Hidetoshi Kumata, & Kitao Fujiwara. (2002). Study of in vitro cytotoxicity of arsenocholine, a trimethyl arsenic compound in seafood. Applied Organometallic Chemistry. 16(8). 415–420. 2 indexed citations
20.
Yamaguchi, Shigeo, Noriyuki Kaji, Hetron Mweemba Munang’andu, et al.. (2000). Quantification of chicken anaemia virus by competitive polymerase chain reaction. Avian Pathology. 29(4). 305–310. 17 indexed citations

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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