Ayumi Okuyama

555 total citations
23 papers, 445 citations indexed

About

Ayumi Okuyama is a scholar working on Rheumatology, Genetics and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Ayumi Okuyama has authored 23 papers receiving a total of 445 indexed citations (citations by other indexed papers that have themselves been cited), including 16 papers in Rheumatology, 8 papers in Genetics and 8 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Ayumi Okuyama's work include Vasculitis and related conditions (7 papers), Chronic Lymphocytic Leukemia Research (6 papers) and Systemic Lupus Erythematosus Research (6 papers). Ayumi Okuyama is often cited by papers focused on Vasculitis and related conditions (7 papers), Chronic Lymphocytic Leukemia Research (6 papers) and Systemic Lupus Erythematosus Research (6 papers). Ayumi Okuyama collaborates with scholars based in Japan and United States. Ayumi Okuyama's co-authors include Koichi Amano, Hirofumi Takei, Ryota Sakai, Tsuneo Kondo, Tatsuo Senshu, Kyoichi Akiyama, Tsutomu Takeuchi, Takahiko Kurasawa, Akiko Shibata and Hideto Kameda and has published in prestigious journals such as Blood, Biochimica et Biophysica Acta (BBA) - General Subjects and Lara D. Veeken.

In The Last Decade

Ayumi Okuyama

21 papers receiving 438 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Ayumi Okuyama Japan	11	206	113	100	97	95	23	445
Patricia Moya Spain	14	253 1.2×	111 1.0×	74 0.7×	128 1.3×	81 0.9×	65	565
Keisuke Nishimura Japan	15	151 0.7×	249 2.2×	41 0.4×	111 1.1×	122 1.3×	74	682
Ola Börjesson Sweden	7	209 1.0×	68 0.6×	33 0.3×	92 0.9×	54 0.6×	11	512
Dana P. Ascherman United States	5	353 1.7×	94 0.8×	79 0.8×	122 1.3×	100 1.1×	6	816
Nina Daha Netherlands	13	381 1.8×	31 0.3×	98 1.0×	141 1.5×	69 0.7×	22	699
N. Hunzelmann Germany	14	118 0.6×	59 0.5×	78 0.8×	55 0.6×	303 3.2×	26	519
Takashi Igawa Japan	12	256 1.2×	44 0.4×	31 0.3×	143 1.5×	63 0.7×	33	631
Stephen J. Murphy United States	4	95 0.5×	215 1.9×	33 0.3×	129 1.3×	100 1.1×	6	458
Lavanya Kamesh United Kingdom	8	128 0.6×	176 1.6×	73 0.7×	165 1.7×	28 0.3×	12	578
Edward J. Fudman United States	9	274 1.3×	43 0.4×	82 0.8×	118 1.2×	104 1.1×	10	598

Countries citing papers authored by Ayumi Okuyama

Since Specialization

Citations

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

Fields of papers citing papers by Ayumi Okuyama

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ayumi Okuyama

This figure shows the co-authorship network connecting the top 25 collaborators of Ayumi Okuyama. A scholar is included among the top collaborators of Ayumi Okuyama 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 Ayumi Okuyama. Ayumi Okuyama is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Nakayama, Takahiro, et al.. (2024). A case of refractory microscopic polyangiitis with recurrent relapses after hemodialysis successfully treated with avacopan. Nihon Toseki Igakkai Zasshi. 57(4). 155–160.

Saito, Shuntaro, Ayumi Okuyama, Yusuke Okada, et al.. (2019). Tocilizumab monotherapy for large vessel vasculitis: results of 104-week treatment of a prospective, single-centre, open study. Lara D. Veeken. 59(7). 1617–1621. 28 indexed citations

Sakai, Ryota, Tsuneo Kondo, Takahiko Kurasawa, et al.. (2017). Current clinical evidence of tocilizumab for the treatment of ANCA-associated vasculitis: a prospective case series for microscopic polyangiitis in a combination with corticosteroids and literature review. Clinical Rheumatology. 36(10). 2383–2392. 33 indexed citations

Tokuhira, Michihide, Shuntaro Saito, Ayumi Okuyama, et al.. (2017). Impact of the Duration of Methotrexate Administration and the Specific HLA Alleles on the Regressive Methotrexate-Induced Lymphoproliferative Disorders. Blood. 130. 4024–4024. 1 indexed citations

Tokuhira, Michihide, Shuntaro Saito, Ayumi Okuyama, et al.. (2017). Clinicopathologic investigation of methotrexate-induced lymphoproliferative disorders, with a focus on regression. Leukemia & lymphoma. 59(5). 1143–1152. 50 indexed citations

Kasuga, Ikuma, et al.. (2017). Usability of low-dose spiral computed tomography in the early detection of lung and mediastinal tumors. Health Evaluation and Promotion. 44(4). 575–579.

Kikuchi, Jun, Tsuneo Kondo, Akiko Shibata, et al.. (2017). Efficacy and tolerability of six-week extended dosing interval with tocilizumab therapy in a prospective cohort as remission maintenance in patients with rheumatoid arthritis. Modern Rheumatology. 28(3). 444–451. 6 indexed citations

Tokuhira, Michihide, Takayuki Tabayashi, Yuta Kimura, et al.. (2017). The aggressive clinical courses of Hodgkin lymphoma primarily diagnosed as methotrexate-induced non-specific lymphoproliferative disorder in patients with rheumatoid arthritis. Journal of Clinical and Experimental Hematopathology. 56(3). 165–169. 10 indexed citations

Sakai, Ryota, Tsuneo Kondo, Jun Kikuchi, et al.. (2016). Corticosteroid-free treatment of tocilizumab monotherapy for microscopic polyangiitis: a single-arm, single-center, clinical trial. Modern Rheumatology. 26(6). 900–907. 16 indexed citations

10.

Sakai, Ryota, Akiko Shibata, Tsuneo Kondo, et al.. (2015). Corticosteroid- and cyclophosphamide-free treatment of anti-neutrophil cytoplasmic antibody-associated vasculitis using tocilizumab. Modern Rheumatology. 25(5). 810–811. 9 indexed citations

11.

Tokuhira, Michihide, Yuta Kimura, M. Sagawa, et al.. (2014). Therapy-Related Myeloid Neoplasm in Methotrexate-Associated Lymphoproliferative Disease in a Rheumatoid Arthritis Patient. Journal of Clinical and Experimental Hematopathology. 54(2). 137–141. 3 indexed citations

12.

Kameda, Hideto, Hiroe Ogawa, Hayato Nagasawa, et al.. (2013). Efficacy of weekly mizoribine pulse therapy in refractory lupus nephritis. Modern Rheumatology. 23(1). 97–103. 8 indexed citations

13.

Tokuhira, Michihide, M. Sagawa, Morihiro Higashi, et al.. (2013). Impact Of Epstein-Barr Viral Infection In The Regression Of Methotrexate-Induced Lymphoproliferative Diseases In Patients With Rheumatoid Arthritis. Blood. 122(21). 3006–3006. 2 indexed citations

14.

Kurasawa, Takahiko, Hayato Nagasawa, Hirofumi Takei, et al.. (2013). Successful Treatment of Class IV+V Lupus Nephritis with Combination Therapy of High-dose Corticosteroids, Tacrolimus and Intravenous Cyclophosphamide. Internal Medicine. 52(10). 1125–1130. 5 indexed citations

15.

Sakai, Ryota, Hayato Nagasawa, Ayumi Okuyama, et al.. (2012). Successful treatment of adult-onset Still’s disease with tocilizumab monotherapy: two case reports and literature review. Clinical Rheumatology. 31(3). 569–574. 33 indexed citations

16.

Kameda, Hideto, Hiroe Ogawa, Hayato Nagasawa, et al.. (2012). Efficacy of weekly mizoribine pulse therapy in refractory lupus nephritis. Modern Rheumatology. 23(1). 97–103. 10 indexed citations

17.

Takei, Hirofumi, Hayato Nagasawa, Ryota Sakai, et al.. (2012). A Case of Multiple Giant Coronary Aneurysms and Abdominal Aortic Aneurysm Coexisting with IgG4-related Disease. Internal Medicine. 51(8). 963–967. 25 indexed citations

18.

Suzuki, Katsuya, Hideto Kameda, Koichi Amano, et al.. (2010). Single center prospective study of tacrolimus efficacy and safety in the treatment of various manifestations in systemic lupus erythematosus. Rheumatology International. 31(6). 757–763. 29 indexed citations

19.

Kameda, Hideto, et al.. (2007). Lymphomatoid granulomatosis and diffuse alveolar damage associated with methotrexate therapy in a patient with rheumatoid arthritis. Clinical Rheumatology. 26(9). 1585–1589. 31 indexed citations

20.

Akiyama, Kyoichi, et al.. (1988). Combined biochemical and immunochemical comparison of peptidylarginine deiminases present in various tissues. Biochimica et Biophysica Acta (BBA) - General Subjects. 966(3). 375–383. 112 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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