Koichi Sayama

1.6k total citations
37 papers, 1.1k citations indexed

About

Koichi Sayama is a scholar working on Pulmonary and Respiratory Medicine, Physiology and Immunology. According to data from OpenAlex, Koichi Sayama has authored 37 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 17 papers in Pulmonary and Respiratory Medicine, 17 papers in Physiology and 10 papers in Immunology. Recurrent topics in Koichi Sayama's work include Asthma and respiratory diseases (14 papers), Allergic Rhinitis and Sensitization (6 papers) and Mast cells and histamine (5 papers). Koichi Sayama is often cited by papers focused on Asthma and respiratory diseases (14 papers), Allergic Rhinitis and Sensitization (6 papers) and Mast cells and histamine (5 papers). Koichi Sayama collaborates with scholars based in Japan, United States and United Kingdom. Koichi Sayama's co-authors include Koichiro Asano, Tsuyoshi Oguma, Koichi Fukunaga, Stephen J. Galli, Yusuke Suzuki, Tomoko Betsuyaku, Koji Yano, Chris S. Lantz, John J. Costa and Nancy Noben-Trauth and has published in prestigious journals such as The Journal of Immunology, Biochemical and Biophysical Research Communications and Journal of Allergy and Clinical Immunology.

In The Last Decade

Koichi Sayama

37 papers receiving 1.1k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Koichi Sayama Japan 16 528 467 389 201 134 37 1.1k
Katsuyuki Takeda United States 22 423 0.8× 423 0.9× 641 1.6× 118 0.6× 282 2.1× 56 1.5k
Brigita Šitkauskienė Lithuania 21 463 0.9× 372 0.8× 359 0.9× 177 0.9× 176 1.3× 61 1.1k
Sally E. Wenzel United States 21 1.1k 2.1× 846 1.8× 514 1.3× 349 1.7× 296 2.2× 36 1.9k
Annette Balhorn United States 20 684 1.3× 408 0.9× 515 1.3× 198 1.0× 85 0.6× 21 1.2k
Theo A. Out Netherlands 21 517 1.0× 530 1.1× 665 1.7× 155 0.8× 197 1.5× 51 1.7k
Taku Kodama United States 20 634 1.2× 252 0.5× 661 1.7× 222 1.1× 161 1.2× 28 1.2k
Shinji Motojima Japan 16 775 1.5× 520 1.1× 304 0.8× 203 1.0× 130 1.0× 43 1.3k
S. Létuvé France 16 459 0.9× 342 0.7× 439 1.1× 71 0.4× 386 2.9× 28 1.2k
Nathalie Pagé Canada 19 710 1.3× 344 0.7× 793 2.0× 202 1.0× 376 2.8× 31 1.6k
Yves Pachéco France 19 565 1.1× 726 1.6× 325 0.8× 86 0.4× 357 2.7× 50 1.5k

Countries citing papers authored by Koichi Sayama

Since Specialization
Citations

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

Fields of papers citing papers by Koichi Sayama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Koichi Sayama

This figure shows the co-authorship network connecting the top 25 collaborators of Koichi Sayama. A scholar is included among the top collaborators of Koichi Sayama 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 Koichi Sayama. Koichi Sayama 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.
Okada, Masahiko, Kohei Horiuchi, Koichi Sayama, et al.. (2024). Real-World Efficacy and Safety of Atezolizumab for Advanced Non-Small Cell Lung Cancer in Japan: A Retrospective Multicenter Analysis. Journal of Clinical Medicine. 13(24). 7815–7815. 1 indexed citations
2.
Muto, Yutaka, Eri Hagiwara, Tomohisa Baba, et al.. (2022). Unilateral Autoimmune Pulmonary Alveolar Proteinosis with Polymyositis-related Interstitial Lung Disease. Internal Medicine. 61(20). 3095–3100. 2 indexed citations
3.
Kabata, Hiroki, Jun Miyata, Katsunori Masaki, et al.. (2020). Clinical characteristics of patients with not well-controlled severe asthma in Japan: Analysis of the Keio Severe Asthma Research Program in Japanese population (KEIO-SARP) registry. Allergology International. 70(1). 61–67. 8 indexed citations
4.
Ueda, Soichiro, Koichi Fukunaga, Takahisa Takihara, et al.. (2018). Deficiency of CRTH2, a Prostaglandin D2 Receptor, Aggravates Bleomycin-induced Pulmonary Inflammation and Fibrosis. American Journal of Respiratory Cell and Molecular Biology. 60(3). 289–298. 16 indexed citations
5.
Hasegawa, Ichiro, et al.. (2015). Interventional Therapeutic Strategy for Hemoptysis Originating from Infectious Pulmonary Artery Pseudoaneurysms. Journal of Vascular and Interventional Radiology. 26(7). 1046–1051.e1. 9 indexed citations
6.
Miyazaki, Masaki, Hidetoshi Nakamura, Shotaro Chubachi, et al.. (2014). Analysis of comorbid factors that increase the COPD assessment test scores. Respiratory Research. 15(1). 13–13. 82 indexed citations
7.
Miyata, Jun, Hiroki Kabata, Katsunori Masaki, et al.. (2014). Determinants of Long-Term Persistence with Tiotropium Bromide for Chronic Obstructive Pulmonary Disease. COPD Journal of Chronic Obstructive Pulmonary Disease. 12(3). 234–242. 8 indexed citations
8.
Masaki, Katsunori, Yusuke Suzuki, Shizuko Kagawa, et al.. (2014). Dual Role of Interleukin-23 in Epicutaneously-Sensitized Asthma in Mice. Allergology International. 63. 13–22. 9 indexed citations
9.
Miyata, Jun, Sadatomo Tasaka, Masaki Miyazaki, et al.. (2013). <i>Bacillus cereus</i> Necrotizing Pneumonia in a Patient with Nephrotic Syndrome. Internal Medicine. 52(1). 101–104. 13 indexed citations
10.
Ishii, Makoto, Koichiro Asano, Yuichiro Hayashi, et al.. (2012). Tuberous sclerosis diagnosed by incidental computed tomography findings of multifocal micronodular pneumocyte hyperplasia: a case report. Journal of Medical Case Reports. 6(1). 352–352. 1 indexed citations
11.
Miyata, Jun, Koichi Fukunaga, Ryo Iwamoto, et al.. (2012). Dysregulated synthesis of protectin D1 in eosinophils from patients with severe asthma. Journal of Allergy and Clinical Immunology. 131(2). 353–360.e2. 108 indexed citations
12.
Oguma, Tsuyoshi, Koichiro Asano, Katsuyoshi Tomomatsu, et al.. (2011). Induction of Mucin and MUC5AC Expression by the Protease Activity of Aspergillus fumigatus in Airway Epithelial Cells. The Journal of Immunology. 187(2). 999–1005. 50 indexed citations
13.
Kagawa, Shizuko, Koichi Fukunaga, Tsuyoshi Oguma, et al.. (2011). Role of Prostaglandin D Receptor CRTH2 in Sustained Eosinophil Accumulation in the Airways of Mice with Chronic Asthma. International Archives of Allergy and Immunology. 155(Suppl. 1). 6–11. 15 indexed citations
14.
Asano, Koichiro, Tsuyoshi Oguma, Shizuko Kagawa, et al.. (2010). Strain-Specific Phenotypes of Airway Inflammation and Bronchial Hyperresponsiveness Induced by Epicutaneous Allergen Sensitization in BALB/c and C57BL/6 Mice. International Archives of Allergy and Immunology. 152(Suppl. 1). 67–74. 22 indexed citations
15.
Asano, Koichiro, Tetsuya Shiomi, Takeshi Nakajima, et al.. (2009). Impact of pharmacokinetics and pharmacogenetics on the efficacy of pranlukast in Japanese asthmatics. Respirology. 14(6). 822–827. 8 indexed citations
16.
Suzuki, Yusuke, Koichiro Asano, Kyoko Niimi, et al.. (2008). TP receptor-mediated release of eosinophil chemotactic activity from human bronchial smooth muscle cells. European Journal of Pharmacology. 600(1-3). 133–139. 5 indexed citations
17.
Shiraishi, Yoshiki, Koichiro Asano, Kyoko Niimi, et al.. (2008). Cyclooxygenase-2/Prostaglandin D2/CRTH2 Pathway Mediates Double-Stranded RNA-Induced Enhancement of Allergic Airway Inflammation. The Journal of Immunology. 180(1). 541–549. 71 indexed citations
18.
19.
Niimi, Kyoko, Koichiro Asano, Yoshiki Shiraishi, et al.. (2007). TLR3-Mediated Synthesis and Release of Eotaxin-1/CCL11 from Human Bronchial Smooth Muscle Cells Stimulated with Double-Stranded RNA. The Journal of Immunology. 178(1). 489–495. 41 indexed citations
20.
Sayama, Koichi, Maximilian Diehn, Kentaro Matsuda, et al.. (2002). Transcriptional response of human mast cells stimulated via the FcεRI and identification of mast cells as a source of IL-11. BMC Immunology. 3(1). 5–5. 55 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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