Kazuo Okumoto

1.0k total citations
45 papers, 767 citations indexed

About

Kazuo Okumoto is a scholar working on Hepatology, Epidemiology and Surgery. According to data from OpenAlex, Kazuo Okumoto has authored 45 papers receiving a total of 767 indexed citations (citations by other indexed papers that have themselves been cited), including 28 papers in Hepatology, 20 papers in Epidemiology and 15 papers in Surgery. Recurrent topics in Kazuo Okumoto's work include Liver Disease Diagnosis and Treatment (16 papers), Hepatitis C virus research (11 papers) and Liver physiology and pathology (9 papers). Kazuo Okumoto is often cited by papers focused on Liver Disease Diagnosis and Treatment (16 papers), Hepatitis C virus research (11 papers) and Liver physiology and pathology (9 papers). Kazuo Okumoto collaborates with scholars based in Japan and United States. Kazuo Okumoto's co-authors include Takafumi Saito, Hisayoshi Watanabe, Sumio Kawata, Hitoshi Togashi, Koji Saito, Etsuko Hattori, Hiroaki Haga, Junitsu Ito, Yoshiyuki Ueno and Kazuhiko Sugahara and has published in prestigious journals such as PLoS ONE, Hepatology and The Journal of Clinical Endocrinology & Metabolism.

In The Last Decade

Kazuo Okumoto

41 papers receiving 741 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Kazuo Okumoto Japan 17 376 287 248 171 87 45 767
Chao‐Long Chen Taiwan 14 522 1.4× 219 0.8× 245 1.0× 148 0.9× 67 0.8× 25 975
Andrew Scanga United States 10 383 1.0× 295 1.0× 175 0.7× 156 0.9× 16 0.2× 19 683
Hiroteru Kamimura Japan 16 251 0.7× 245 0.9× 142 0.6× 141 0.8× 36 0.4× 86 867
Aysha Ali United Kingdom 5 354 0.9× 353 1.2× 157 0.6× 176 1.0× 33 0.4× 13 845
Sonja Hillebrandt Germany 9 317 0.8× 318 1.1× 195 0.8× 130 0.8× 29 0.3× 12 804
David Pereyra Austria 14 287 0.8× 226 0.8× 185 0.7× 90 0.5× 17 0.2× 52 573
Michel Guiguet France 10 189 0.5× 221 0.8× 77 0.3× 118 0.7× 56 0.6× 25 628
Bo Wei China 12 340 0.9× 350 1.2× 246 1.0× 177 1.0× 11 0.1× 46 676
Belinda Sánchez Pérez Spain 15 248 0.7× 150 0.5× 310 1.3× 144 0.8× 19 0.2× 89 809

Countries citing papers authored by Kazuo Okumoto

Since Specialization
Citations

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

Fields of papers citing papers by Kazuo Okumoto

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Kazuo Okumoto

This figure shows the co-authorship network connecting the top 25 collaborators of Kazuo Okumoto. A scholar is included among the top collaborators of Kazuo Okumoto 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 Kazuo Okumoto. Kazuo Okumoto 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.
Okumoto, Kazuo, et al.. (2025). [Drug-induced liver injury due to asymptomatically discovered Saire-to: a case report].. PubMed. 122(3). 216–220.
2.
Okumoto, Kazuo, et al.. (2024). A case of methotrexate-related lymphoproliferative disease showing multiple liver lesions in a patient with rheumatoid arthritis. Clinical Journal of Gastroenterology. 17(4). 705–710.
3.
Fujita, Masashi, Kazumichi Abe, Hidekatsu Kuroda, et al.. (2022). Influence of skeletal muscle volume loss during lenvatinib treatment on prognosis in unresectable hepatocellular carcinoma: a multicenter study in Tohoku, Japan. Scientific Reports. 12(1). 6479–6479. 10 indexed citations
4.
5.
Katsumi, Tomohiro, Masashi Ninomiya, Kei Mizuno, et al.. (2016). MiR-139-5p is associated with inflammatory regulation through c-FOS suppression, and contributes to the progression of primary biliary cholangitis. Laboratory Investigation. 96(11). 1165–1177. 26 indexed citations
6.
Tomita, Kyoko, Hiroaki Haga, Kei Mizuno, et al.. (2014). Epiregulin promotes the emergence and proliferation of adult liver progenitor cells. American Journal of Physiology-Gastrointestinal and Liver Physiology. 307(1). G50–G57. 14 indexed citations
7.
Saito, Takafumi, Kei Mizuno, Tomohiro Katsumi, et al.. (2014). Transmission of Hepatitis C Virus From a Mother to a Child Carrying IL28B Heterozygote rs8099917 Among Three Brothers: A Long-Term Follow-Up. Journal of Medical Cases. 5(4). 227–231. 1 indexed citations
8.
Saito, Takafumi, Li Shao, Kazuo Okumoto, et al.. (2013). Serum prolactin levels and prolactin mRNA expression in peripheral blood mononuclear cells in hepatitis C virus infection. Journal of Medical Virology. 85(7). 1199–1205. 7 indexed citations
9.
Tomita, Kyoko, Hiroaki Haga, Tomohiro Katsumi, et al.. (2013). Clinical Manifestations of Liver Dysfunction in Patients With Anorexia Nervosa. Clinical Gastroenterology and Hepatology. 12(1). 163–163. 1 indexed citations
10.
Saito, Takafumi, Kazuo Okumoto, Hiroaki Haga, et al.. (2011). Potential Therapeutic Application of Intravenous Autologous Bone Marrow Infusion in Patients with Alcoholic Liver Cirrhosis. Stem Cells and Development. 20(9). 1503–1510. 54 indexed citations
11.
Ito, Junitsu, Takafumi Saito, Yoshihiro Suzuki, et al.. (2011). A case of monocular blindness as the initial presentation of hepatocellular carcinoma with skull metastasis. Clinical Journal of Gastroenterology. 4(4). 273–277. 1 indexed citations
12.
Nishise, Yuko, Takafumi Saito, Naohiko Makino, et al.. (2010). Relationship between Alcohol Consumption and Serum Adiponectin Levels: The Takahata Study—A Cross-Sectional Study of a Healthy Japanese Population. The Journal of Clinical Endocrinology & Metabolism. 95(8). 3828–3835. 21 indexed citations
13.
Saito, Takafumi, Yuko Nishise, Naohiko Makino, et al.. (2009). Impact of metabolic syndrome on elevated serum alanine aminotransferase levels in the Japanese population. Metabolism. 58(8). 1067–1075. 24 indexed citations
14.
15.
Okumoto, Kazuo, Takafumi Saito, Etsuko Hattori, et al.. (2006). Serum levels of stem cell factor and thrombopoietin are markedly decreased in fulminant hepatic failure patients with a poor prognosis. Journal of Gastroenterology and Hepatology. 22(8). 1265–1270. 11 indexed citations
16.
Okumoto, Kazuo, Takafumi Saito, Etsuko Hattori, et al.. (2005). Differentiation of rat bone marrow cells cultured on artificial basement membrane containing extracellular matrix into a liver cell lineage. Journal of Hepatology. 43(1). 110–116. 18 indexed citations
17.
Okumoto, Kazuo, Takafumi Saito, Etsuko Hattori, et al.. (2003). Differentiation of bone marrow cells into cells that express liver-specific genes in vitro: implication of the Notch signals in differentiation. Biochemical and Biophysical Research Communications. 304(4). 691–695. 62 indexed citations
18.
Adachi, Tohru, Hitomi Watanabe, Kazuo Okumoto, et al.. (2003). Endoscopic Incision for Esophageal Intramural Hematoma after Injection SclerotherapyCase Report. Gastrointestinal Endoscopy. 58(3). 466–468. 3 indexed citations
19.
Kimura, Mariko, T Matsuda, Kazutoshi Fukase, et al.. (2002). [Clinical study of dissection of the superior mesenteric artery].. PubMed. 99(2). 145–51. 7 indexed citations
20.
Koshima, Isao, Kiichi Inagawa, Katsuyuki Urushibara, Kazuo Okumoto, & Takahiko Moriguchi. (2000). Fingertip Reconstructions Using Partial-Toe Transfers. Plastic & Reconstructive Surgery. 105(5). 1666–1674. 66 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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