Koji Obata

3.5k total citations
118 papers, 2.8k citations indexed

About

Koji Obata is a scholar working on Cardiology and Cardiovascular Medicine, Surgery and Electrical and Electronic Engineering. According to data from OpenAlex, Koji Obata has authored 118 papers receiving a total of 2.8k indexed citations (citations by other indexed papers that have themselves been cited), including 33 papers in Cardiology and Cardiovascular Medicine, 29 papers in Surgery and 28 papers in Electrical and Electronic Engineering. Recurrent topics in Koji Obata's work include Bladder and Urothelial Cancer Treatments (17 papers), Cardiac electrophysiology and arrhythmias (16 papers) and Urinary and Genital Oncology Studies (13 papers). Koji Obata is often cited by papers focused on Bladder and Urothelial Cancer Treatments (17 papers), Cardiac electrophysiology and arrhythmias (16 papers) and Urinary and Genital Oncology Studies (13 papers). Koji Obata collaborates with scholars based in Japan, United States and China. Koji Obata's co-authors include Mitsuhiro Yokota, Kohzo Nagata, Hideo Izawa, Toyoaki Murohara, Akiko Noda, Sahoko Ichihara, Tomoko S. Kato, Kazuo Matsukawa, Miyako Takaki and Mitsunori Iwase and has published in prestigious journals such as Circulation, Journal of the American College of Cardiology and PLoS ONE.

In The Last Decade

Koji Obata

117 papers receiving 2.7k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Koji Obata Japan 30 930 655 633 546 399 118 2.8k
Vincenzo Lionetti Italy 37 1.4k 1.5× 751 1.1× 1.9k 3.0× 139 0.3× 257 0.6× 131 4.1k
Ruben M. Sandoval United States 43 256 0.3× 499 0.8× 1.8k 2.9× 238 0.4× 508 1.3× 110 5.5k
M Hori Japan 35 1.3k 1.4× 826 1.3× 1.0k 1.6× 60 0.1× 237 0.6× 89 4.2k
Ping Hua China 29 278 0.3× 208 0.3× 486 0.8× 381 0.7× 194 0.5× 104 2.5k
Juan Cinca Spain 40 3.6k 3.9× 933 1.4× 1.1k 1.7× 151 0.3× 302 0.8× 193 4.9k
Jun Koyama Japan 35 1.7k 1.8× 825 1.3× 1.9k 3.1× 1.2k 2.1× 156 0.4× 179 5.0k
Claudio Brunelli Italy 30 1.5k 1.6× 530 0.8× 492 0.8× 87 0.2× 115 0.3× 131 3.1k
Junichi Yamazaki Japan 23 738 0.8× 407 0.6× 161 0.3× 261 0.5× 137 0.3× 139 1.8k
René R. Sevag Packard United States 22 510 0.5× 404 0.6× 761 1.2× 87 0.2× 213 0.5× 60 2.3k
Akihiro Takahashi Japan 39 233 0.3× 662 1.0× 931 1.5× 167 0.3× 123 0.3× 147 4.7k

Countries citing papers authored by Koji Obata

Since Specialization
Citations

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

Fields of papers citing papers by Koji Obata

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Koji Obata

This figure shows the co-authorship network connecting the top 25 collaborators of Koji Obata. A scholar is included among the top collaborators of Koji Obata 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 Koji Obata. Koji Obata 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.
Obata, Koji, Hironobu Morita, & Miyako Takaki. (2020). Mechanism underlying the negative inotropic effect in rat left ventricle in hyperthermia: the role of TRPV1. The Journal of Physiological Sciences. 70(1). 4–4. 5 indexed citations
2.
Kawao, Naoyuki, et al.. (2017). Effects of hypergravity on gene levels in anti-gravity muscle and bone through the vestibular system in mice. The Journal of Physiological Sciences. 68(5). 609–616. 6 indexed citations
3.
4.
Tateishi, Ryosuke, Nobuko Akiyama, Maki Miyauchi, et al.. (2015). Hypergravity Provokes a Temporary Reduction in CD4+CD8+ Thymocyte Number and a Persistent Decrease in Medullary Thymic Epithelial Cell Frequency in Mice. PLoS ONE. 10(10). e0141650–e0141650. 8 indexed citations
5.
Myny, Kris, Steve Smout, Maarten Rockelé, et al.. (2014). 30.1 8b Thin-film microprocessor using a hybrid oxide-organic complementary technology with inkjet-printed P<sup>2</sup>ROM memory. Lirias (KU Leuven). 486–487. 29 indexed citations
6.
Takeshita, Daisuke, Masahiro Tanaka, Shoshu Mitsuyama, et al.. (2012). A new calpain inhibitor protects left ventricular dysfunction induced by mild ischemia-reperfusion in in situ rat hearts. The Journal of Physiological Sciences. 63(2). 113–123. 19 indexed citations
7.
Zhang, Guo‐Xing, Koji Obata, Daisuke Takeshita, et al.. (2012). Evaluation of left ventricular mechanical work and energetics of normal hearts in SERCA2a transgenic rats. The Journal of Physiological Sciences. 62(3). 221–231. 9 indexed citations
8.
Matsuyoshi, Hiroko, Hiroki Kuniyasu, M. Okumura, et al.. (2010). A 5-HT4-receptor activation-induced neural plasticity enhances in vivo reconstructs of enteric nerve circuit insult. Neurogastroenterology & Motility. 22(7). 806–e226. 44 indexed citations
9.
Matsukawa, Kazuo, Takashi Morie, Y. Tokunaga, et al.. (2009). Design methods for pipeline & delta-sigma A-to-D converters with convex optimization. Asia and South Pacific Design Automation Conference. 690–695. 5 indexed citations
10.
Yamada, Takashi, Kohzo Nagata, Xian Wu Cheng, et al.. (2009). Long-term administration of nifedipine attenuates cardiac remodeling and diastolic heart failure in hypertensive rats. European Journal of Pharmacology. 615(1-3). 163–170. 32 indexed citations
11.
Cheng, Xian Wu, Toyoaki Murohara, Masafumi Kuzuya, et al.. (2008). Superoxide-Dependent Cathepsin Activation Is Associated with Hypertensive Myocardial Remodeling and Represents a Target for Angiotensin II Type 1 Receptor Blocker Treatment. American Journal Of Pathology. 173(2). 358–369. 48 indexed citations
12.
Kobayashi, Masakazu, Hideo Izawa, Xian Wu Cheng, et al.. (2008). Dobutamine Stress Testing as a Diagnostic Tool for Evaluation of Myocardial Contractile Reserve in Asymptomatic or Mildly Symptomatic Patients With Dilated Cardiomyopathy. JACC. Cardiovascular imaging. 1(6). 718–726. 35 indexed citations
13.
Hayashi, Keiko, Hirotaka Kimata, Koji Obata, et al.. (2008). Xanthine Oxidase Inhibition Improves Left Ventricular Dysfunction in Dilated Cardiomyopathic Hamsters. Journal of Cardiac Failure. 14(3). 238–244. 24 indexed citations
14.
Hirashiki, Akihiro, Hideo Izawa, Koji Obata, et al.. (2006). Prognostic Value of Pacing-Induced Mechanical Alternans in Patients With Mild-to-Moderate Idiopathic Dilated Cardiomyopathy in Sinus Rhythm. Journal of the American College of Cardiology. 47(7). 1382–1389. 15 indexed citations
15.
Obata, Koji, Kohzo Nagata, Mitsunori Iwase, et al.. (2005). Overexpression of calmodulin induces cardiac hypertrophy by a calcineurin-dependent pathway. Biochemical and Biophysical Research Communications. 338(2). 1299–1305. 30 indexed citations
16.
Obata, Koji, Masafumi Koide, Kohzo Nagata, et al.. (2001). Role of FK506-Binding Protein 12 in Development of the Chick Embryonic Heart. Biochemical and Biophysical Research Communications. 283(3). 613–620. 6 indexed citations
17.
Miyanaga, Naoto, Hideyuki Akaza, Taiji Tsukamoto, et al.. (1999). Urinary nuclear matrix protein 22 as a new marker for the screening of urothelial cancer in patients with microscopic hematuria. International Journal of Urology. 6(4). 173–177. 49 indexed citations
18.
Kuriyama, Manabu, et al.. (1996). Serum Prostate‐Specific Antigen Values for the Prediction of Clinical Stage and Prognosis in Patients with Prostate Cancer: An Analysis of 749 Cases. International Journal of Urology. 3(6). 462–467. 7 indexed citations
19.
Hasegawa, Soichiro, Kanefusa Kato, Munehisa Takashi, et al.. (1992). Effect of Extracorporeal Shockwave Lithotripsy for Urolithiasis on Concentrations of Creatine Kinase Isozymes in Patient Serum and Urine. Urologia Internationalis. 48(4). 420–424. 2 indexed citations
20.
Morrison, Alan S., Anders Ahlbom, Kunio Aoki, et al.. (1985). Occupation and bladder cancer in Boston, USA, Manchester, UK, and Nagoya, Japan.. Journal of Epidemiology & Community Health. 39(4). 294–300. 32 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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