Koichi Sayama

70 total papers · 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, Nancy Noben-Trauth, John J. Costa and Masao Yamaguchi and has published in prestigious journals such as The Journal of Immunology, Biochemical and Biophysical Research Communications and Journal of Allergy and Clinical Immunology.

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.

Koichi Sayama

36 papers receiving 1.1k citations

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.

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).

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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2026