Kou Katayama

797 total citations
30 papers, 595 citations indexed

About

Kou Katayama is a scholar working on Rheumatology, Pathology and Forensic Medicine and Genetics. According to data from OpenAlex, Kou Katayama has authored 30 papers receiving a total of 595 indexed citations (citations by other indexed papers that have themselves been cited), including 21 papers in Rheumatology, 7 papers in Pathology and Forensic Medicine and 6 papers in Genetics. Recurrent topics in Kou Katayama's work include Rheumatoid Arthritis Research and Therapies (19 papers), Lymphoma Diagnosis and Treatment (7 papers) and Autoimmune and Inflammatory Disorders Research (6 papers). Kou Katayama is often cited by papers focused on Rheumatoid Arthritis Research and Therapies (19 papers), Lymphoma Diagnosis and Treatment (7 papers) and Autoimmune and Inflammatory Disorders Research (6 papers). Kou Katayama collaborates with scholars based in Japan, United States and Netherlands. Kou Katayama's co-authors include Kuniaki Terato, Masakazu Kondo, Masako Hara, Naoki Ishiguro, Tsuneyo Mimori, Kazuhiko Yamamoto, Satoshi Soen, Takayuki Sumida, Nobuyuki Miyasaka and Takeo Matsuno and has published in prestigious journals such as PLoS ONE, Annals of the Rheumatic Diseases and British Journal of Radiology.

In The Last Decade

Kou Katayama

29 papers receiving 572 citations

Peers

Countries citing papers authored by Kou Katayama

Since Specialization

Citations

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

Fields of papers citing papers by Kou Katayama

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Kou Katayama

This figure shows the co-authorship network connecting the top 25 collaborators of Kou Katayama. A scholar is included among the top collaborators of Kou Katayama 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 Kou Katayama. Kou Katayama 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

#	Work	Indexed citations
1	Investigation of treatment continuity, usefulness, and nocebo effect in switching from the original etanercept to its biosimilar in patients with rheumatoid arthritis: A JET observational study in Japanese clinical practice 2023 ·Modern Rheumatology ·Tsukasa Matsubara, Kou Katayama, Akira Sagawa, Masaaki Yoshida, (unknown), Keisuke Hashimoto, (unknown), Masakazu Kondo, (unknown), (unknown), Ichiro Yoshii, Motohiro Oribe, Shigeki Momohara, (unknown)	1
2	Oral and Intestinal Bacterial Substances Associated with Disease Activities in Patients with Rheumatoid Arthritis: A Cross-Sectional Clinical Study 2022 ·Journal of Immunology Research ·(unknown), Hiroshi Shionoya, (unknown), (unknown), (unknown), Chiyuki Abe, (unknown), Keita Nishimura, (unknown), Kou Katayama, Kuniaki Terato, Takaki Waritani	24
3	Efficacy and safety of peficitinib (ASP015K) in patients with rheumatoid arthritis and an inadequate response to methotrexate: results of a phase III randomised, double-blind, placebo-controlled trial (RAJ4) in Japan 2019 ·Annals of the Rheumatic Diseases ·Tsutomu Takeuchi, Yoshiya Tanaka, Sakae Tanaka, Atsushi Kawakami, Manabu Iwasaki, Kou Katayama, Mitsuhiro Rokuda, (unknown), Satoshi Ushijima, Yuichiro Kaneko, (unknown), Emi Yamada, Désirée van der Heijde	101
4	Contribution of bacterial pathogens to evoking serological disease markers and aggravating disease activity in rheumatoid arthritis 2018 ·PLoS ONE ·Kuniaki Terato, Takaki Waritani, (unknown), Hiroshi Shionoya, Hiroshi Itoh, Kou Katayama	9
5	Computer-Based Radiographic Quantification of Joint Space Narrowing Progression Using Sequential Hand Radiographs: Validation Study in Rheumatoid Arthritis Patients from Multiple Institutions 2017 ·Journal of Digital Imaging ·(unknown), Tamotsu Kamishima, Kenneth Sutherland, Jun Fukae, Kou Katayama, (unknown), (unknown), (unknown), (unknown), (unknown), Kazuhide Tanimura	5
6	Performance of computer-based analysis using temporal subtraction to assess joint space narrowing progression in rheumatoid patients 2015 ·Rheumatology International ·(unknown), Tamotsu Kamishima, Kenneth Sutherland, (unknown), Kou Katayama	8
7	The usefulness of a new triple combination treatment utilizing methotrexate, salazosulfapyridine, and bucillamine in rheumatoid arthritis 2015 ·Modern Rheumatology ·Hiroaki Matsuno, Masato Okada, Yoshitada Sakai, Chiyuki Abe, Kou Katayama, Akira Sagawa, (unknown), Masakazu Kondo, (unknown), Tsukasa Matsubara	7
8	Radiographic quantifications of joint space narrowing progression by computer-based approach using temporal subtraction in rheumatoid wrist 2015 ·British Journal of Radiology ·(unknown), Tamotsu Kamishima, Kenneth Sutherland, (unknown), Kou Katayama	11
9	Safety and efficacy of combination therapy of iguratimod with methotrexate for patients with active rheumatoid arthritis with an inadequate response to methotrexate: An open-label extension of a randomized, double-blind, placebo-controlled trial 2013 ·Modern Rheumatology ·Masako Hara, Naoki Ishiguro, Kou Katayama, Masakazu Kondo, Takayuki Sumida, Tsuneyo Mimori, Satoshi Soen, (unknown), (unknown), Kazuhiko Yamamoto	47
10	Concomitant iguratimod therapy in patients with active rheumatoid arthritis despite stable doses of methotrexate: a randomized, double-blind, placebo-controlled trial 2013 ·Modern Rheumatology ·Naoki Ishiguro, Kazuhiko Yamamoto, Kou Katayama, Masakazu Kondo, Takayuki Sumida, Tsuneyo Mimori, Satoshi Soen, (unknown), (unknown), Masako Hara	45
11	Concomitant iguratimod therapy in patients with active rheumatoid arthritis despite stable doses of methotrexate: a randomized, double-blind, placebo-controlled trial 2012 ·Modern Rheumatology ·Naoki Ishiguro, Kazuhiko Yamamoto, Kou Katayama, Masakazu Kondo, Takayuki Sumida, Tsuneyo Mimori, Satoshi Soen, (unknown), (unknown), Masako Hara	48
12	Tacrolimus-induced pulmonary injury in rheumatoid arthritis patients 2011 ·Pulmonary Pharmacology & Therapeutics ·Ryuji Koike, Michi Tanaka, Yukiko Komano, Fumikazu Sakai, Haruhito Sugiyama, Toshihiro Nanki, Hiroshi Ide, Satoshi Jodo, Kou Katayama, Hidekazu Matsushima, Yusuke Miwa, Koichi Morita, Hiroshi Nakashima, Hiroyuki Nakamura, (unknown), Yoshiko Sato, (unknown), (unknown), Nobuyuki Miyasaka, Masayoshi Harigai	21
13	Supplemental treatment of rheumatoid arthritis with natural milk antibodies against enteromicrobes and their toxins: results of an open-labelled pilot study 2011 ·Nutrition Journal ·Kou Katayama, Takeo Matsuno, Takaki Waritani, Kuniaki Terato, Hiroshi Shionoya	25
14	Effects of an Oral Administration of Glucosamine-Chondroitin-Quercetin Glucoside on the Synovial Fluid Properties in Patients with Osteoarthritis and Rheumatoid Arthritis 2009 ·Bioscience Biotechnology and Biochemistry ·Hiroaki Matsuno, Hiroshi Nakamura, Kou Katayama, (unknown), (unknown), Kazuo Yudoh, Yoshinobu Kiso	46
15	Long-term efficacy of leflunomide on disease activity and inhibition of joint damage: retrospective comparison with methotrexate for Japanese rheumatoid arthritis patients 2009 ·Modern Rheumatology ·Kou Katayama, Takeo Matsuno	2
16	Effects of Bisphosphonates on Fracture Incidence and Bone Metabolism in Rheumatoid Arthritis Patients in General Practice Taking Long-Term Corticosteroid Therapy 2008 ·Clinical Drug Investigation ·Kou Katayama, Takeo Matsuno	9
17	Arthroscopic reconstruction of the anterior cruciate ligament-A comparison of bone-patellar tendon-bone autograft and semitendinosus-gracilis tendon autograft- 2000 ·(unknown), Takeo Matsuno, Kou Katayama, (unknown), (unknown), (unknown)	0
18	Fracture of the hamate hook presenting as median nerve palsy 1998 ·Archives of Orthopaedic and Trauma Surgery ·(unknown), Kou Katayama, (unknown)	12
19	Electric field distribution of event-related potentials in stroke patients 1996 ·Brain Topography ·Koichi Hirata, Soichi Katayama, Kaoru Yamazaki, (unknown), Kou Katayama	10
20	Specificity of antibodies to type II collagen in rheumatoid arthritis 1990 ·Arthritis & Rheumatism ·Kuniaki Terato, (unknown), Kou Katayama, Yoshiharu Takemitsu, Izumi Yamashita, (unknown), Katsuyuki Fujii, (unknown), (unknown), Makoto Goto, Kusuki Nishioka, Nobuyuki Miyasaka, Yutaka Nagai	140

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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