Ken‐ei Sada

3.5k total citations
149 papers, 1.9k citations indexed

About

Ken‐ei Sada is a scholar working on Rheumatology, Pulmonary and Respiratory Medicine and Genetics. According to data from OpenAlex, Ken‐ei Sada has authored 149 papers receiving a total of 1.9k indexed citations (citations by other indexed papers that have themselves been cited), including 69 papers in Rheumatology, 58 papers in Pulmonary and Respiratory Medicine and 30 papers in Genetics. Recurrent topics in Ken‐ei Sada's work include Vasculitis and related conditions (52 papers), Systemic Lupus Erythematosus Research (37 papers) and Coagulation, Bradykinin, Polyphosphates, and Angioedema (21 papers). Ken‐ei Sada is often cited by papers focused on Vasculitis and related conditions (52 papers), Systemic Lupus Erythematosus Research (37 papers) and Coagulation, Bradykinin, Polyphosphates, and Angioedema (21 papers). Ken‐ei Sada collaborates with scholars based in Japan, United States and United Kingdom. Ken‐ei Sada's co-authors include Hirofumi Makino, Yoshihiro Arimura, Masahiro Yamamura, Takayuki Katsuyama, Yoshinori Matsumoto, Jun Wada, Masayoshi Harigai, Hitoshi Sugiyama, Haruki Watanabe and Yohei Maeshima and has published in prestigious journals such as Journal of Clinical Investigation, The Journal of Immunology and PLoS ONE.

In The Last Decade

Ken‐ei Sada

128 papers receiving 1.9k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Ken‐ei Sada Japan 24 736 716 422 397 290 149 1.9k
Sara Monti Italy 26 933 1.3× 803 1.1× 257 0.6× 353 0.9× 217 0.7× 117 2.2k
İhsan Ertenli Türkiye 28 554 0.8× 997 1.4× 677 1.6× 525 1.3× 118 0.4× 155 2.7k
Víctor M. Martínez‐Taboada Spain 19 1.4k 1.9× 1.3k 1.8× 313 0.7× 402 1.0× 183 0.6× 65 2.5k
Alvise Berti Italy 27 1.1k 1.5× 824 1.2× 525 1.2× 601 1.5× 844 2.9× 114 2.6k
K.H. Ly France 31 1.3k 1.7× 1.2k 1.7× 191 0.5× 376 0.9× 421 1.5× 139 2.7k
Michel De Bandt France 28 595 0.8× 1.3k 1.8× 402 1.0× 693 1.7× 263 0.9× 81 2.7k
Ömer Karadağ Türkiye 26 675 0.9× 940 1.3× 580 1.4× 544 1.4× 109 0.4× 215 2.6k
Tristan Mirault France 24 1.1k 1.5× 493 0.7× 304 0.7× 244 0.6× 78 0.3× 121 2.4k
Gina Gregorini Italy 26 1.5k 2.1× 1.1k 1.5× 390 0.9× 388 1.0× 601 2.1× 58 2.7k
Keita Fujikawa Japan 24 556 0.8× 931 1.3× 524 1.2× 417 1.1× 292 1.0× 153 2.4k

Countries citing papers authored by Ken‐ei Sada

Since Specialization
Citations

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

Fields of papers citing papers by Ken‐ei Sada

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ken‐ei Sada. 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 Ken‐ei Sada. The network helps show where Ken‐ei Sada may publish in the future.

Co-authorship network of co-authors of Ken‐ei Sada

This figure shows the co-authorship network connecting the top 25 collaborators of Ken‐ei Sada. A scholar is included among the top collaborators of Ken‐ei Sada 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 Ken‐ei Sada. Ken‐ei Sada 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.
2.
Ichikawa, Takanori, Dai Kishida, Yasuhiro Shimojima, et al.. (2025). Trust in Health Information Sources Among Patients With Systemic Lupus Erythematosus in the Social Networking Era: The TRUMP2-SLE Study. The Journal of Rheumatology. 52(10). 1005–1012.
3.
Sada, Ken‐ei, N. Dobashi, Sho Sasaki, et al.. (2025). Association of physicians’ Big Five personality traits with shared decision-making in patients with SLE. Lara D. Veeken. 64(10). 5269–5276.
4.
Aoki, Takuya, et al.. (2024). Primary Care Research Connect: Reflecting on the first 5 years and looking to the future. Journal of General and Family Medicine. 26(2). 189–190.
5.
Sada, Ken‐ei, Takako Miyamae, Kayoko Kaneko, et al.. (2024). Effects of cyclophosphamide administration on ovarian dysfunction in pediatric patients with connective tissue diseases: A systematic scoping review. Modern Rheumatology. 35(1). 88–93.
6.
Ōnishi, Akira, Keisuke Nishimura, Yuzuru Yamamoto, et al.. (2024). Predictive validity of Lupus Patient-Reported Outcome for damage accrual in patients with systemic lupus erythematosus: the LUNA Registry. Lara D. Veeken. 64(4). 1880–1885.
7.
Katsuyama, Eri, Kunio Matsumoto, Kei Hirose, et al.. (2023). A case of sitosterolaemia-caused systemic large-vessel stenosis mimicking Takayasu arteritis in which FDG-PET provided a clue for the differential diagnosis. Rheumatology Advances in Practice. 7(3). rkad096–rkad096. 1 indexed citations
8.
Oguro, Nao, Nobuyuki Yajima, Yuichi Ishikawa, et al.. (2023). Effect of Attending Rheumatologists’ Big 5 Personality Traits on Patient Trust in Patients With Systemic Lupus Erythematosus: The TRUMP2-SLE Project. The Journal of Rheumatology. 51(2). 168–175. 2 indexed citations
9.
Ichikawa, Takanori, Dai Kishida, Yasuhiro Shimojima, et al.. (2023). Impact of online health information-seeking behavior on shared decision-making in patients with systemic lupus erythematosus: The TRUMP 2 -SLE project. Lupus. 32(11). 1258–1266. 9 indexed citations
10.
Kurita, Noriaki, Nao Oguro, Yoshia Miyawaki, et al.. (2022). Trust in the attending rheumatologist, health-related hope and medication adherence among Japanese systemic lupus erythematosus patients. Lara D. Veeken. 62(6). 2147–2153. 10 indexed citations
11.
Saito, Mayu, Nobuyuki Yajima, Kunihiro Ichinose, et al.. (2021). Prevalence and treatment conditions for hypertension and dyslipidaemia complicated with systemic lupus erythematosus: A multi-centre cross-sectional study. Lupus. 30(7). 1146–1153. 11 indexed citations
12.
Michihata, Nobuaki, Ken‐ei Sada, Kazuaki Uda, et al.. (2020). Comparison of fracture risk between proton pump inhibitors and histamine-2 receptor antagonists in ANCA-associated vasculitis patients: a nested case–control study. Lara D. Veeken. 60(4). 1717–1723. 10 indexed citations
13.
Hiramatsu, Sumie, Yosuke Asano, Yoshia Miyawaki, et al.. (2019). Regulation of Cathepsin E gene expression by the transcription factor Kaiso in MRL/lpr mice derived CD4+ T cells. Scientific Reports. 9(1). 3054–3054. 12 indexed citations
14.
Miyawaki, Yoshia, Ken‐ei Sada, Yosuke Asano, et al.. (2018). Progressive reduction of serum complement levels: a risk factor for relapse in patients with hypocomplementemia in systemic lupus erythematosus. Lupus. 27(13). 2093–2100. 5 indexed citations
15.
Asano, Yosuke, Ken‐ei Sada, Keigo Hayashi, et al.. (2018). Lymphoproliferative disease in a patient with Takayasu arteritis and ulcerative colitis. Modern Rheumatology Case Reports. 3(1). 34–37. 1 indexed citations
16.
Teshigawara, Sanae, Sumie Hiramatsu, Takayuki Katsuyama, et al.. (2018). Role of Lgals9 Deficiency in Attenuating Nephritis and Arthritis in BALB/c Mice in a Pristane‐Induced Lupus Model. Arthritis & Rheumatology. 70(7). 1089–1101. 26 indexed citations
17.
Watanabe, Haruki, Ken‐ei Sada, Yoshinori Matsumoto, et al.. (2018). Association Between Reappearance of Myeloperoxidase–Antineutrophil Cytoplasmic Antibody and Relapse in Antineutrophil Cytoplasmic Antibody–Associated Vasculitis. Arthritis & Rheumatology. 70(10). 1626–1633. 28 indexed citations
18.
Miyawaki, Yoshia, Ken‐ei Sada, Yosuke Asano, et al.. (2018). An open-label pilot study on preventing glucocorticoid-induced diabetes mellitus with linagliptin. Journal of Medical Case Reports. 12(1). 288–288. 5 indexed citations
19.
Katsuyama, Eri, Sumie Hiramatsu, Haruki Watanabe, et al.. (2017). Downregulation of miR-200a-3p, Targeting CtBP2 Complex, Is Involved in the Hypoproduction of IL-2 in Systemic Lupus Erythematosus–Derived T Cells. The Journal of Immunology. 198(11). 4268–4276. 31 indexed citations
20.
Hara, Ryoki, Kenichi Nishimura, Tomo Nozawa, et al.. (2015). A national survey on current use of mycophenolate mofetil for childhood-onset systemic lupus erythematosus in Japan.. PubMed. 25(6). 858–64. 5 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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