Kotaro Kumagai

1.0k total citations
59 papers, 791 citations indexed

About

Kotaro Kumagai is a scholar working on Hepatology, Epidemiology and Immunology. According to data from OpenAlex, Kotaro Kumagai has authored 59 papers receiving a total of 791 indexed citations (citations by other indexed papers that have themselves been cited), including 32 papers in Hepatology, 31 papers in Epidemiology and 11 papers in Immunology. Recurrent topics in Kotaro Kumagai's work include Liver Disease Diagnosis and Treatment (26 papers), Hepatitis C virus research (14 papers) and Hepatitis B Virus Studies (12 papers). Kotaro Kumagai is often cited by papers focused on Liver Disease Diagnosis and Treatment (26 papers), Hepatitis C virus research (14 papers) and Hepatitis B Virus Studies (12 papers). Kotaro Kumagai collaborates with scholars based in Japan, United States and China. Kotaro Kumagai's co-authors include Akio Ido, Seiichi Mawatari, Hirofumi Uto, Hirohito Tsubouchi, Akihiro Moriuchi, Tsutomu Tamai, Shuji Kanmura, Kohei Oda, Makoto Oketani and Yasushi Imamura and has published in prestigious journals such as The Journal of Immunology, Gastroenterology and PLoS ONE.

In The Last Decade

Kotaro Kumagai

53 papers receiving 784 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Kotaro Kumagai Japan 16 390 226 186 158 103 59 791
Shuji Kanmura Japan 18 278 0.7× 171 0.8× 218 1.2× 164 1.0× 202 2.0× 83 891
Benedikt Kaufmann Germany 14 467 1.2× 234 1.0× 424 2.3× 128 0.8× 119 1.2× 26 881
Po–Sung Chu Japan 15 442 1.1× 343 1.5× 154 0.8× 242 1.5× 106 1.0× 42 825
Ali Mencin United States 6 340 0.9× 242 1.1× 176 0.9× 147 0.9× 117 1.1× 7 670
Yan Wen China 17 316 0.8× 119 0.5× 199 1.1× 132 0.8× 165 1.6× 50 749
Kenichiro Mikami Japan 17 363 0.9× 303 1.3× 267 1.4× 84 0.5× 172 1.7× 38 823
Seiichi Mawatari Japan 16 383 1.0× 233 1.0× 145 0.8× 99 0.6× 115 1.1× 49 731
Xiaogang Xiang China 21 739 1.9× 507 2.2× 261 1.4× 246 1.6× 131 1.3× 61 1.3k
Karen Wallace United Kingdom 14 337 0.9× 443 2.0× 248 1.3× 87 0.6× 242 2.3× 23 907
Maya Margalit Israel 17 508 1.3× 123 0.5× 294 1.6× 317 2.0× 170 1.7× 46 1.1k

Countries citing papers authored by Kotaro Kumagai

Since Specialization
Citations

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

Fields of papers citing papers by Kotaro Kumagai

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Kotaro Kumagai

This figure shows the co-authorship network connecting the top 25 collaborators of Kotaro Kumagai. A scholar is included among the top collaborators of Kotaro Kumagai 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 Kotaro Kumagai. Kotaro Kumagai 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.
Shibata, Keisuke, Yuichi Akasaki, Akihiro Tokushige, et al.. (2025). Blood pressure elevations post-lenvatinib treatment in hepatocellular carcinoma: a potential marker for better prognosis. Hypertension Research. 48(4). 1542–1553.
2.
Sugita, Koshiro, Keisuke Yano, Shun Onishi, et al.. (2023). Superiority of Intestinal Adaptation by Hepatocyte Growth Factor in the Jejunum: An Experimental Study in a Short-Bowel Rat Model. Journal of Pediatric Surgery. 59(4). 627–633. 3 indexed citations
3.
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5.
Yano, Keisuke, Koshiro Sugita, Mitsuru Muto, et al.. (2022). The preventive effect of recombinant human hepatocyte growth factor for hepatic steatosis in a rat model of short bowel syndrome. Journal of Pediatric Surgery. 57(7). 1286–1292. 7 indexed citations
6.
Yano, Keisuke, Tatsuru Kaji, Koshiro Sugita, et al.. (2021). The administration of hepatocyte growth factor prevents total parenteral nutrition-induced hepatocellular injury in a rat model. Pediatric Surgery International. 37(3). 353–361. 5 indexed citations
7.
Jacob, Noam, Kotaro Kumagai, Yosuke Shimodaira, et al.. (2020). Direct signaling of TL1A-DR3 on fibroblasts induces intestinal fibrosis in vivo. Scientific Reports. 10(1). 18189–18189. 27 indexed citations
8.
Kanmura, Shuji, Shiho Arima, Kotaro Kumagai, et al.. (2019). Extract of Lactobacillus plantarum strain 06CC2 induces JNK/p38 MAPK pathway-mediated apoptosis through endoplasmic reticulum stress in Caco2 colorectal cancer cells. Biochemistry and Biophysics Reports. 20. 100691–100691. 17 indexed citations
9.
Mawatari, Seiichi, Kohei Oda, Kotaro Kumagai, et al.. (2018). Sustained virologic response after eight weeks of treatment with sofosbuvir, ledipasvir, and ribavirin in a decompensated cirrhotic patient with hepatitis C virus genotype 1b. Hepatology Research. 49(2). 239–243. 1 indexed citations
10.
Zhang, Hong, Libo Zheng, Dermot McGovern, et al.. (2017). Myeloid ATG16L1 Facilitates Host–Bacteria Interactions in Maintaining Intestinal Homeostasis. The Journal of Immunology. 198(5). 2133–2146. 59 indexed citations
11.
Tamai, Tsutomu, Kohei Oda, Kotaro Kumagai, et al.. (2017). Utility of percutaneous radiofrequency ablation alone or combined with transarterial chemoembolization for early hepatocellular carcinoma. Oncology Letters. 14(3). 3199–3206. 13 indexed citations
12.
Kumagai, Kotaro, Fumisato Sasaki, Yoichiro Takami, et al.. (2015). Glycoprotein Nonmetastatic Melanoma B (Gpnmb)-Positive Macrophages Contribute to the Balance between Fibrosis and Fibrolysis during the Repair of Acute Liver Injury in Mice. PLoS ONE. 10(11). e0143413–e0143413. 54 indexed citations
13.
Ishigami, Masatoshi, Kazuhiko Hayashi, Shinya Wakusawa, et al.. (2015). Copper Accumulates in Hemosiderins in Livers of Patients with Iron Overload Syndromes. Journal of Clinical and Translational Hepatology. 3(2). 85–92. 8 indexed citations
14.
Mawatari, Seiichi, Hirofumi Uto, Akihiro Moriuchi, et al.. (2014). Horizontal transmission of de novo hepatitis B between spouses: A case report. Hepatology Research. 45(8). 933–938. 2 indexed citations
15.
Uto, Hirofumi, Kotaro Kumagai, Fumisato Sasaki, et al.. (2013). Impact of antibody to hepatitis B core antigen on the clinical course of hepatitis C virus carriers in a hyperendemic area in Japan: A community‐based cohort study. Hepatology Research. 43(11). 1130–1138. 8 indexed citations
16.
Uto, Hirofumi, Kohei Oda, Rie Ibusuki, et al.. (2013). Dietary fructose enhances the incidence of precancerous hepatocytes induced by administration of diethylnitrosamine in rat. European journal of medical research. 18(1). 54–54. 27 indexed citations
17.
Mawatari, Seiichi, Hirofumi Uto, Akio Ido, et al.. (2013). Hepatitis C Virus NS3/4A Protease Inhibits Complement Activation by Cleaving Complement Component 4. PLoS ONE. 8(12). e82094–e82094. 14 indexed citations
18.
Uto, Hirofumi, Yasushi Imamura, Ken Kusano, et al.. (2011). Impact of cigarette smoking on onset of nonalcoholic fatty liver disease over a 10-year period. Journal of Gastroenterology. 46(6). 769–778. 117 indexed citations
19.
Mawatari, Seiichi, Kōhei Oda, Kotaro Kumagai, et al.. (2011). A case of severe alcoholic hepatitis with development of an intramuscular hematoma in the left upper arm following anticoagulation therapy. Kanzo. 52(1). 18–25. 1 indexed citations
20.
Uto, Hirofumi, Sherri O. Stuver, Katsuhiro Hayashi, et al.. (2009). Increased rate of death related to presence of viremia among hepatitis C virus antibody–positive subjects in a community‐based cohort study†. Hepatology. 50(2). 393–399. 43 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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