Hirayasu Kai

1.6k total citations
41 papers, 810 citations indexed

About

Hirayasu Kai is a scholar working on Nephrology, Immunology and Molecular Biology. According to data from OpenAlex, Hirayasu Kai has authored 41 papers receiving a total of 810 indexed citations (citations by other indexed papers that have themselves been cited), including 20 papers in Nephrology, 12 papers in Immunology and 6 papers in Molecular Biology. Recurrent topics in Hirayasu Kai's work include Renal Diseases and Glomerulopathies (12 papers), Chronic Kidney Disease and Diabetes (9 papers) and Dialysis and Renal Disease Management (9 papers). Hirayasu Kai is often cited by papers focused on Renal Diseases and Glomerulopathies (12 papers), Chronic Kidney Disease and Diabetes (9 papers) and Dialysis and Renal Disease Management (9 papers). Hirayasu Kai collaborates with scholars based in Japan, United States and France. Hirayasu Kai's co-authors include Satoko Tahara‐Hanaoka, Kazuko Shibuya, Shin‐ichiro Honda, Akira Shibuya, Kai Shibata, Kunihiro Yamagata, Yumi Yamashita, Teruhito Yasui, Akiko Iguchi‐Manaka and Hitoshi Kikutani and has published in prestigious journals such as Proceedings of the National Academy of Sciences, The Journal of Experimental Medicine and Blood.

In The Last Decade

Hirayasu Kai

39 papers receiving 796 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Hirayasu Kai Japan 14 452 197 158 100 69 41 810
Kunio Morozumi Japan 17 131 0.3× 282 1.4× 55 0.3× 154 1.5× 68 1.0× 76 785
B.H. Rovin United States 12 345 0.8× 194 1.0× 54 0.3× 54 0.5× 33 0.5× 14 750
J.P. Soulillou France 15 297 0.7× 182 0.9× 59 0.4× 109 1.1× 58 0.8× 40 765
Arnaud Lionet France 17 625 1.4× 561 2.8× 88 0.6× 126 1.3× 116 1.7× 56 1.2k
Scott E. Wenderfer United States 16 297 0.7× 281 1.4× 28 0.2× 144 1.4× 77 1.1× 60 780
M Cavaillé‐Coll United States 10 159 0.4× 103 0.5× 98 0.6× 156 1.6× 45 0.7× 15 684
Max Weiß Germany 13 201 0.4× 170 0.9× 80 0.5× 91 0.9× 157 2.3× 27 882
J. Strehlau Germany 14 144 0.3× 120 0.6× 39 0.2× 48 0.5× 61 0.9× 28 565
Atkins Rc Australia 12 173 0.4× 228 1.2× 40 0.3× 120 1.2× 115 1.7× 23 655
Brian Susskind United States 15 304 0.7× 146 0.7× 51 0.3× 90 0.9× 26 0.4× 36 1.3k

Countries citing papers authored by Hirayasu Kai

Since Specialization
Citations

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

Fields of papers citing papers by Hirayasu Kai

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Hirayasu Kai

This figure shows the co-authorship network connecting the top 25 collaborators of Hirayasu Kai. A scholar is included among the top collaborators of Hirayasu Kai 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 Hirayasu Kai. Hirayasu Kai 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.
Sakamoto, Tatsuhiro, Hirayasu Kai, Toshiaki Usui, et al.. (2025). Multiple Myeloma in a Patient with Birt-Hogg-Dubé Syndrome. Internal Medicine. 64(18). 2764–2768. 1 indexed citations
2.
Usui, Joichi, Tatsuya Shimizu, Akinori Hattori, et al.. (2025). A case of autosomal dominant polycystic kidney disease with systemic lupus erythematosus developing after SARS-CoV-2 vaccination. CEN Case Reports. 14(5). 679–685.
3.
Okubo, Reiko, Toshiyuki Imasawa, Chie Saito, et al.. (2023). Health-related Quality of Life in 10 years Long-term Survivors of Chronic Kidney Disease: A From-J Study. Journal of Renal Nutrition. 34(2). 161–169. 1 indexed citations
4.
5.
Hoshino, Junichi, Kei Nagai, Hirayasu Kai, et al.. (2021). Comparison of annual eGFR decline among primary kidney diseases in patients with CKD G3b-5: results from a REACH-J CKD cohort study. Clinical and Experimental Nephrology. 25(8). 902–910. 8 indexed citations
6.
Okubo, Reiko, Masahide Kondo, Kei Nagai, et al.. (2021). Physical functioning in patients with chronic kidney disease stage G3b‐5 in Japan: The reach‐J CKD cohort study. Nephrology. 26(12). 981–987. 1 indexed citations
7.
Saito, Chie, Kei Nagai, Keisei Kosaki, et al.. (2021). Ratio of serum creatinine to cystatin C is related to leg strength in predialysis CKD patients. Clinical and Experimental Nephrology. 25(10). 1079–1086. 1 indexed citations
8.
Kai, Hirayasu, Ryota Ishii, Akiko Fujita, et al.. (2020). A case report of progressive multifocal leukoencephalopathy during steroid treatment for ANCA-associated renal vasculitis. CEN Case Reports. 9(4). 354–358. 2 indexed citations
9.
Hoshino, Junichi, Kei Nagai, Hirayasu Kai, et al.. (2017). A nationwide prospective cohort study of patients with advanced chronic kidney disease in Japan: The Reach-J CKD cohort study. Clinical and Experimental Nephrology. 22(2). 309–317. 9 indexed citations
10.
Usui, Joichi, Atsushi Ueda, Satoshi Iwabuchi, et al.. (2016). Temporal Changes in Post-Infectious Glomerulonephritis in Japan (1976-2009). PLoS ONE. 11(6). e0157356–e0157356. 4 indexed citations
11.
Kai, Hirayasu, et al.. (2016). Evaluation of the Validity of a Novel CKD Assessment Checklist Used in the Frontier of Renal Outcome Modifications in Japan Study. Journal of Renal Nutrition. 26(5). 334–340. 1 indexed citations
12.
Kai, Hirayasu, Megumi Watanabe, Noriaki Moriyama, et al.. (2015). Two autosomal dominant polycystic kidney (ADPKD) cases with advanced renal dysfunction, effectively treated with tolvaptan. CEN Case Reports. 5(1). 87–90. 2 indexed citations
13.
Hitomi, Shigemi, et al.. (2014). A case of secondary syphilis demonstrating nephrotic syndrome and a solitary intrahepatic mass in a human immunodeficiency virus-1-infected patient. Journal of Infection and Chemotherapy. 21(1). 62–64. 1 indexed citations
14.
Okubo, Reiko, Hirayasu Kai, Masahide Kondo, et al.. (2013). Health-related quality of life and prognosis in patients with chronic kidney disease: a 3-year follow-up study. Clinical and Experimental Nephrology. 18(5). 697–703. 25 indexed citations
15.
Nagai, Kei, Chie Saito, Chihiro Sato, et al.. (2012). Annual incidence of persistent proteinuria in the general population from Ibaraki annual urinalysis study. Clinical and Experimental Nephrology. 17(2). 255–260. 10 indexed citations
16.
Kondo, Masahide, Hirayasu Kai, Chie Saito, et al.. (2010). Measurement of health-related quality of life in patients with chronic kidney disease in Japan with EuroQol (EQ-5D). Clinical and Experimental Nephrology. 14(4). 340–348. 54 indexed citations
17.
Iguchi‐Manaka, Akiko, Hirayasu Kai, Yumi Yamashita, et al.. (2008). Accelerated tumor growth in mice deficient in DNAM-1 receptor. The Journal of Experimental Medicine. 205(13). 2959–2964. 221 indexed citations
18.
Kai, Hirayasu, Yoshio Shimizu, Masahiro Hagiwara, et al.. (2006). Post-MRSA infection glomerulonephritis with marked Staphylococcus aureus cell envelope antigen deposition in glomeruli. Journal of Nephrology. 19(2). 215–219. 26 indexed citations
19.
Yamagata, Kunihiro, Kaori Muro, Masahiro Hagiwara, et al.. (2002). Mitochondrial DNA Mutations in Focal Segmental Glomerulosclerosis Lesions. Journal of the American Society of Nephrology. 13(7). 1816–1823. 55 indexed citations
20.
Hirayama, Kouichi, Satoshi Yamamoto, Hirayasu Kai, et al.. (2002). Predominance of Type-2 Immune Response in Idiopathic Membranous Nephropathy. ˜The œNephron journals/Nephron journals. 91(2). 255–261. 42 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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