Ryuji Okamoto

2.0k total citations
61 papers, 1.4k citations indexed

About

Ryuji Okamoto is a scholar working on Cardiology and Cardiovascular Medicine, Molecular Biology and Surgery. According to data from OpenAlex, Ryuji Okamoto has authored 61 papers receiving a total of 1.4k indexed citations (citations by other indexed papers that have themselves been cited), including 30 papers in Cardiology and Cardiovascular Medicine, 23 papers in Molecular Biology and 13 papers in Surgery. Recurrent topics in Ryuji Okamoto's work include Protein Kinase Regulation and GTPase Signaling (11 papers), Cardiomyopathy and Myosin Studies (11 papers) and Protein Tyrosine Phosphatases (6 papers). Ryuji Okamoto is often cited by papers focused on Protein Kinase Regulation and GTPase Signaling (11 papers), Cardiomyopathy and Myosin Studies (11 papers) and Protein Tyrosine Phosphatases (6 papers). Ryuji Okamoto collaborates with scholars based in Japan, United States and Germany. Ryuji Okamoto's co-authors include Masaaki Ito, Takeshi Nakano, Naoki Isaka, Nobuyuki Moriki, David J. Hartshorne, Yasuko Kureishi, Tetsuya Seko, James K. Liao, Katsuya Onishi and Ping‐Yen Liu and has published in prestigious journals such as Circulation, Journal of Clinical Investigation and Journal of the American College of Cardiology.

In The Last Decade

Ryuji Okamoto

56 papers receiving 1.4k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Ryuji Okamoto Japan 17 803 433 225 177 153 61 1.4k
Howard K. Surks United States 20 1.0k 1.3× 408 0.9× 421 1.9× 191 1.1× 207 1.4× 32 1.8k
Mauro Siragusa Germany 17 721 0.9× 186 0.4× 250 1.1× 179 1.0× 111 0.7× 27 1.3k
Federico Damilano United States 18 808 1.0× 454 1.0× 267 1.2× 163 0.9× 84 0.5× 26 1.4k
Guenter Daum United States 23 842 1.0× 244 0.6× 221 1.0× 245 1.4× 177 1.2× 30 1.6k
Akiko Ishii Japan 24 738 0.9× 222 0.5× 249 1.1× 125 0.7× 83 0.5× 75 1.6k
Mauro Torti Italy 25 492 0.6× 242 0.6× 240 1.1× 113 0.6× 88 0.6× 39 1.4k
Julián R. Reguero Spain 23 569 0.7× 794 1.8× 125 0.6× 141 0.8× 106 0.7× 52 1.4k
Hiroto Ueba Japan 13 459 0.6× 302 0.7× 390 1.7× 255 1.4× 170 1.1× 16 1.2k
Christophe Montessuit Switzerland 21 1.0k 1.2× 563 1.3× 362 1.6× 210 1.2× 71 0.5× 48 1.8k
Xiaoying Zhang United States 21 968 1.2× 721 1.7× 118 0.5× 195 1.1× 86 0.6× 39 1.5k

Countries citing papers authored by Ryuji Okamoto

Since Specialization
Citations

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

Fields of papers citing papers by Ryuji Okamoto

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ryuji Okamoto

This figure shows the co-authorship network connecting the top 25 collaborators of Ryuji Okamoto. A scholar is included among the top collaborators of Ryuji Okamoto 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 Ryuji Okamoto. Ryuji Okamoto 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.
Gotō, Tomoyuki, et al.. (2024). Vanishing Left Atrial Mass in a Middle-aged Woman: Spontaneous Intramural Left Atrial Hematoma in Isolated Atrial Amyloidosis. Circulation Cardiovascular Imaging. 17(12). e016905–e016905.
2.
Okamoto, Ryuji, Rie Ito, Yusuf Ali, et al.. (2024). Myosin Light Chain Phosphatase Plays an Important Role in Cardiac Fibrosis in a Model of Mineralocorticoid Receptor‐Associated Hypertension. Journal of the American Heart Association. 13(5). e032828–e032828. 1 indexed citations
3.
Sawada, Hirofumi, Yoshihide Mitani, Yoshiki Miyasaka, et al.. (2024). C–C Motif chemokine receptor-2 blockade ameliorates pulmonary hypertension in rats and synergizes with a pulmonary vasodilator. Cardiovascular Research. 121(7). 1076–1090. 3 indexed citations
4.
Ikematsu, Hiroaki, Ryuji Okamoto, Toshihiro Takamatsu, et al.. (2024). Possibility of determining high quantitative fecal occult blood on stool surface using hyperspectral imaging. Journal of Gastroenterology. 60(1). 77–85. 1 indexed citations
5.
Sawada, Hirofumi, Yoshihide Mitani, Junko Maruyama, et al.. (2022). Perinatal hypoxia aggravates occlusive pulmonary vasculopathy in SU5416/hypoxia-treated rats later in life. American Journal of Physiology-Lung Cellular and Molecular Physiology. 323(2). L178–L192. 1 indexed citations
6.
Okamoto, Ryuji, Ryotaro Hashizume, Noboru Suzuki, et al.. (2022). Serum-Induced Expression of Brain Natriuretic Peptide Contributes to Its Increase in Patients with HFpEF. International Journal of Molecular Sciences. 23(6). 2991–2991. 1 indexed citations
7.
Okamoto, Ryuji, et al.. (2022). Arrhythmogenic right ventricular cardiomyopathy complicating hypertrophic cardiomyopathy. European Heart Journal - Cardiovascular Imaging. 23(9). e326–e326.
8.
Okamoto, Ryuji, Masahiro Inagaki, Tetsuya Seko, et al.. (2021). U-Shaped Intrapericardial Chronic Expanding Hematoma Due to Blunt Chest Trauma. Circulation Cardiovascular Imaging. 14(2). e011176–e011176. 2 indexed citations
9.
Okamoto, Ryuji, et al.. (2021). Fatal myopericarditis complicated with coronary vein perforation under the triple antithrombotic therapy: a case report. European Heart Journal - Case Reports. 5(4). ytab098–ytab098.
10.
Ito, Masaaki, et al.. (2021). Regulation of myosin light-chain phosphorylation and its roles in cardiovascular physiology and pathophysiology. Hypertension Research. 45(1). 40–52. 23 indexed citations
11.
Okamoto, Ryuji, Itaru Goto, Yuhei Nishimura, et al.. (2020). Gap junction protein beta 4 plays an important role in cardiac function in humans, rodents, and zebrafish. PLoS ONE. 15(10). e0240129–e0240129. 13 indexed citations
12.
Murakami, Hiroaki, Naoki Fujimoto, Kei Nakata, et al.. (2020). Serial cardiac magnetic resonance imaging in wet beriberi. Journal of Cardiology Cases. 22(3). 100–102. 1 indexed citations
13.
Okamoto, Ryuji, et al.. (2019). Overlooked pericarditis complicated with cardiac tamponade due to an uncommon cause. European Heart Journal - Cardiovascular Imaging. 21(1). 116–116.
14.
15.
Goto, Itaru, Ryuji Okamoto, Ryotaro Hashizume, et al.. (2018). Renal papillary tip extract stimulates BNP production and excretion from cardiomyocytes. PLoS ONE. 13(5). e0197078–e0197078. 1 indexed citations
16.
Okamoto, Ryuji, et al.. (2016). Tracking isolated myocarditis in a young adult with acute rheumatic fever on cardiac magnetic resonance imaging. International Journal of Cardiology. 222. 921–923. 1 indexed citations
17.
Sawai, Toshiki, Ryuji Okamoto, Kaoru Dohi, et al.. (2013). Marked improvement of renal failure and severe hypertension after renal artery stenting in the solitary functioning kidney. Journal of Cardiology Cases. 7(3). e82–e85. 1 indexed citations
18.
Nohria, Anju, Adnan Pršić, Ping‐Yen Liu, et al.. (2008). Statins inhibit Rho kinase activity in patients with atherosclerosis. Atherosclerosis. 205(2). 517–521. 113 indexed citations
19.
Ito, Masaaki, Yasuko Kureishi, Nobuyuki Moriki, et al.. (2005). Critical Role of Rho/Rho-kinase Pathway for C-reactive Protein-induced Plasminogen Activator Inhibitor-1 Expression in Bovine Aortic Endothelial Cells(Atherosclerosis, Basic 1 (IHD), The 69th Annual Scientific Meeting of the Japanese Circulation Society). Japanese Circulation Journal-english Edition. 69. 145. 1 indexed citations
20.
Saika, Takeshi, et al.. (1998). A Mechanism of Clarithromycin Resistance in Helicobacter pylori. Kansenshogaku zasshi. 72(9). 918–923. 2 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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