Katashi Okuma

468 total citations
13 papers, 393 citations indexed

About

Katashi Okuma is a scholar working on Physiology, Cardiology and Cardiovascular Medicine and Organic Chemistry. According to data from OpenAlex, Katashi Okuma has authored 13 papers receiving a total of 393 indexed citations (citations by other indexed papers that have themselves been cited), including 5 papers in Physiology, 3 papers in Cardiology and Cardiovascular Medicine and 2 papers in Organic Chemistry. Recurrent topics in Katashi Okuma's work include Smoking Behavior and Cessation (3 papers), BRCA gene mutations in cancer (2 papers) and Helicobacter pylori-related gastroenterology studies (2 papers). Katashi Okuma is often cited by papers focused on Smoking Behavior and Cessation (3 papers), BRCA gene mutations in cancer (2 papers) and Helicobacter pylori-related gastroenterology studies (2 papers). Katashi Okuma collaborates with scholars based in Japan. Katashi Okuma's co-authors include Nobuyuki Hamajima, Keitaro Matsuo, Toshiko Saito, Kazuo Tajima, Kenji Yamao, Suketami Tominaga, Hidemi Ito, Ryuzo Ueda, Hiroshi Kumimoto and Tsuneya Nakamura and has published in prestigious journals such as American Heart Journal, Preventive Medicine and Journal of Epidemiology.

In The Last Decade

Katashi Okuma

13 papers receiving 376 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Katashi Okuma Japan	10	103	99	92	90	69	13	393
Jefferson P. Lomenick United States	14	91 0.9×	97 1.0×	134 1.5×	123 1.4×	62 0.9×	20	579
Sergio Muntoni Italy	16	132 1.3×	102 1.0×	68 0.7×	33 0.4×	198 2.9×	39	536
U. Karck Germany	11	42 0.4×	82 0.8×	25 0.3×	82 0.9×	46 0.7×	20	368
K. Berg Norway	12	123 1.2×	66 0.7×	39 0.4×	28 0.3×	90 1.3×	37	397
R. G. McArthur Canada	14	219 2.1×	140 1.4×	42 0.5×	44 0.5×	215 3.1×	30	618
Hong Zang China	16	59 0.6×	97 1.0×	62 0.7×	58 0.6×	67 1.0×	39	599
Claire Jones United Kingdom	6	64 0.6×	60 0.6×	59 0.6×	36 0.4×	36 0.5×	12	363
Byung-Koo Yoon South Korea	16	90 0.9×	93 0.9×	39 0.4×	42 0.5×	139 2.0×	42	670
Srdjan Marković Serbia	9	62 0.6×	69 0.7×	80 0.9×	22 0.2×	42 0.6×	31	314
Jadwiga Snarska Poland	15	116 1.1×	117 1.2×	55 0.6×	25 0.3×	23 0.3×	48	415

Countries citing papers authored by Katashi Okuma

Since Specialization

Citations

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

Fields of papers citing papers by Katashi Okuma

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Katashi Okuma

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

All Works

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13 of 13 papers shown

Ito, Hidemi, Keitaro Matsuo, Kenji Wakai, et al.. (2005). An intervention study of smoking cessation with feedback on genetic cancer susceptibility in Japan. Preventive Medicine. 42(2). 102–108. 45 indexed citations

Ito, Hidemi, Keitaro Matsuo, Nobuyuki Hamajima, et al.. (2005). Significant association of interleukin 8 −251T/A polymorphism with smoking behavior in a Japanese population. Journal of Human Genetics. 50(11). 567–573. 9 indexed citations

Ito, Hidemi, Nobuyuki Hamajima, Keitaro Matsuo, et al.. (2003). Monoamine oxidase polymorphisms and smoking behaviour in Japanese. Pharmacogenetics. 13(2). 73–79. 55 indexed citations

Hamajima, Nobuyuki, Toshiko Saito, Keitaro Matsuo, et al.. (2002). Genotype Frequencies of 50 Polymorphisms for 241 Japanese Non-cancer Patients.. Journal of Epidemiology. 12(3). 229–236. 46 indexed citations

Hamajima, Nobuyuki, Keitaro Matsuo, Toshiko Saito, et al.. (2001). Interleukin 1 Polymorphisms, Lifestyle Factors, and Helicobacter pylori Infection. Japanese Journal of Cancer Research. 92(4). 383–389. 131 indexed citations

Hamajima, Nobuyuki, Hiroji Iwata, Yuichi Obata, et al.. (2000). No Association of the 5′Promoter Region Polymorphism of CYP17 with Breast Cancer Risk in Japan. Japanese Journal of Cancer Research. 91(9). 880–885. 32 indexed citations

Hamajima, Nobuyuki, Kazuo Tajima, Suketami Tominaga, et al.. (1999). Tea Polyphenol Intake and Changes in Serum Pepsinogen Levels. Japanese Journal of Cancer Research. 90(2). 136–143. 8 indexed citations

Hamajima, Nobuyuki, et al.. (1998). Patients' Views on Residual Blood Use for Research Purposes. Japanese Journal of Cancer Research. 89(3). 341–346. 10 indexed citations

Ichihara, Yoshio, Takafumi Anno, Katashi Okuma, et al.. (1996). Oxygen Uptake and Its Relation to Physical Activity and Other Coronary Risk Factors in Asymptomatic Middle-Aged Japanese. Journal of Cardiopulmonary Rehabilitation. 16(6). 378–385. 24 indexed citations

10.

Okuma, Katashi, et al.. (1984). [Acute cardiotoxicity of anthracyclines--analysis by using Holter ECG].. PubMed. 11(4). 902–11. 12 indexed citations

11.

Okuma, Katashi, et al.. (1984). [Protective effect of coenzyme Q10 in cardiotoxicity induced by adriamycin].. PubMed. 11(3). 502–8. 9 indexed citations

12.

Okuma, Katashi. (1976). ECG and VCG changes in experimental hemiblock and bifascicular block. American Heart Journal. 92(4). 473–480. 11 indexed citations

13.

Okuma, Katashi, et al.. (1958). The structure of cellocidin.. PubMed. 11(3). 84–6. 1 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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