Kei Sakao

758 total citations
19 papers, 625 citations indexed

About

Kei Sakao is a scholar working on Rheumatology, Surgery and Molecular Biology. According to data from OpenAlex, Kei Sakao has authored 19 papers receiving a total of 625 indexed citations (citations by other indexed papers that have themselves been cited), including 15 papers in Rheumatology, 8 papers in Surgery and 7 papers in Molecular Biology. Recurrent topics in Kei Sakao's work include Osteoarthritis Treatment and Mechanisms (12 papers), RNA Interference and Gene Delivery (3 papers) and Orthopedic Infections and Treatments (3 papers). Kei Sakao is often cited by papers focused on Osteoarthritis Treatment and Mechanisms (12 papers), RNA Interference and Gene Delivery (3 papers) and Orthopedic Infections and Treatments (3 papers). Kei Sakao collaborates with scholars based in Japan and United States. Kei Sakao's co-authors include Kenji Takahashi, Toshikazu Kubo, Masazumi Saito, Hitoshi Tonomura, Kuniaki Honjo, Osam Mazda, Jirô Imanishi, Yuji Arai, Yuji Arai and Shuji Nakagawa and has published in prestigious journals such as Journal of Orthopaedic Research®, Osteoarthritis and Cartilage and Journal of Bone and Mineral Metabolism.

In The Last Decade

Kei Sakao

18 papers receiving 602 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Kei Sakao Japan 11 349 211 160 151 135 19 625
Kuniaki Honjo Japan 13 284 0.8× 182 0.9× 142 0.9× 156 1.0× 127 0.9× 19 601
Rina Andriamanalijaona France 10 287 0.8× 178 0.8× 97 0.6× 234 1.5× 52 0.4× 10 739
Wolfgang Eger Germany 10 503 1.4× 236 1.1× 74 0.5× 140 0.9× 125 0.9× 15 662
Arnavaz Hakimiyan United States 11 331 0.9× 165 0.8× 78 0.5× 114 0.8× 57 0.4× 17 471
Klaus Bobacz Austria 14 547 1.6× 170 0.8× 82 0.5× 334 2.2× 84 0.6× 30 915
Marc J. Brouillette United States 11 341 1.0× 197 0.9× 61 0.4× 130 0.9× 46 0.3× 26 517
Jimin Yin China 9 470 1.3× 272 1.3× 64 0.4× 197 1.3× 211 1.6× 12 819
W. Wei Netherlands 9 343 1.0× 108 0.5× 45 0.3× 119 0.8× 76 0.6× 15 484
Teresa I. Morales United States 10 514 1.5× 165 0.8× 71 0.4× 169 1.1× 64 0.5× 13 777
D.A. Surtel Netherlands 7 441 1.3× 158 0.7× 107 0.7× 190 1.3× 25 0.2× 26 642

Countries citing papers authored by Kei Sakao

Since Specialization
Citations

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

Fields of papers citing papers by Kei Sakao

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Kei Sakao

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

All Works

19 of 19 papers shown
1.
2.
Takahashi, Kenji, Yuji Arai, Kei Sakao, et al.. (2010). Intra‐articular injection of hyaluronan restores the aberrant expression of matrix metalloproteinase‐13 in osteoarthritic subchondral bone. Journal of Orthopaedic Research®. 29(3). 354–360. 30 indexed citations
3.
Arai, Yoshiyuki, Kuniaki Honjo, Shuji Nakagawa, et al.. (2009). 164 HYALURONAN AND INTERMITTENT HYDROSTATIC PRESSURE SYNERGISTICALLY SUPPRESSED MMP-13 AND IL-6 EXPRESSIONS IN OSTEOBLASTS FROM OA SUBCHONDRAL BONE. Osteoarthritis and Cartilage. 17. S97–S97. 8 indexed citations
4.
Sakao, Kei, Kenji Takahashi, Yuji Arai, et al.. (2009). Osteoblasts derived from osteophytes produce interleukin-6, interleukin-8, and matrix metalloproteinase-13 in osteoarthritis. Journal of Bone and Mineral Metabolism. 27(4). 412–423. 76 indexed citations
5.
Sakao, Kei, Kenji Takahashi, Yuji Arai, et al.. (2009). Asporin and transforming growth factor-β gene expression in osteoblasts from subchondral bone and osteophytes in osteoarthritis. Journal of Orthopaedic Science. 14(6). 738–747. 24 indexed citations
6.
Nakagawa, Shuji, Yuji Arai, Osam Mazda, et al.. (2009). N‐acetylcysteine prevents nitric oxide‐induced chondrocyte apoptosis and cartilage degeneration in an experimental model of osteoarthritis. Journal of Orthopaedic Research®. 28(2). 156–163. 80 indexed citations
7.
8.
Saito, M, Mikihiro Fujioka, Keiichiro Ueshima, et al.. (2009). Total Hip Arthroplasty Using Proximal Porous Coating Stem with Distal Sleeve: Mid-Term Outcome. Journal of orthopaedic surgery. 17(1). 36–41. 1 indexed citations
9.
Inoue, Atsuo, Kenji Takahashi, Osam Mazda, et al.. (2009). Comparison of anti-rheumatic effects of local RNAi-based therapy in collagen induced arthritis rats using various cytokine genes as molecular targets. Modern Rheumatology. 19(2). 125–133. 18 indexed citations
10.
Saito, Motoki, Kenji Takahashi, Yuji Arai, et al.. (2009). Intraarticular administration of platelet-rich plasma with biodegradable gelatin hydrogel microspheres prevents osteoarthritis progression in the rabbit knee.. PubMed. 27(2). 201–7. 153 indexed citations
11.
Sakao, Kei, Kenji Takahashi, Osam Mazda, et al.. (2008). Enhanced expression of interleukin-6, matrix metalloproteinase-13, and receptor activator of NF-κB ligand in cells derived from osteoarthritic subchondral bone. Journal of Orthopaedic Science. 13(3). 202–210. 32 indexed citations
12.
Sakao, Kei, Kenji Takahashi, Yuji Arai, et al.. (2008). Induction of chondrogenic phenotype in synovium-derived progenitor cells by intermittent hydrostatic pressure. Osteoarthritis and Cartilage. 16(7). 805–814. 33 indexed citations
13.
Inoue, Atsuo, Kenji Takahashi, Osam Mazda, et al.. (2008). Comparison of anti-rheumatic effects of local RNAi-based therapy in collagen induced arthritis rats using various cytokine genes as molecular targets. Modern Rheumatology. 19(2). 125–133. 19 indexed citations
14.
Saito, Masazumi, Osam Mazda, Kenji Takahashi, et al.. (2007). Sonoporation mediated transduction of pDNA/siRNA into joint synovium in vivo. Journal of Orthopaedic Research®. 25(10). 1308–1316. 36 indexed citations
15.
Saito, Motoki, Yoshinori Arai, Atsuko Inoue, et al.. (2007). 428 THE PREVENTIVE EFFECT OF PLATELET-RICH PLASMA AND BIODEGRADABLE GELATIN HYDROGEL MICROSPHERES ON EXPERIMENTAL OSTEOARTHRITIS IN THE RABBIT KNEE. Osteoarthritis and Cartilage. 15. C232–C232. 2 indexed citations
16.
Hamaguchi, Hiroyuki, Mikihiro Fujioka, Kenji Takahashi, et al.. (2006). Age-related changes in the hemodynamics of the femoral head as evaluated by early phase of bone scintigraphy. Annals of Nuclear Medicine. 20(1). 35–40. 8 indexed citations
17.
Yamamoto, Toshiro, Masakazu Kita, Isao Kimura, et al.. (2006). Hydrostatic Pressure Induces Cytokine Production in Human Periodontal Ligament Cells. Oral Science International. 3(2). 64–71. 4 indexed citations
18.
Inoue, Atsuo, Kenji Takahashi, Yuji Arai, et al.. (2005). The therapeutic effects of basic fibroblast growth factor contained in gelatin hydrogel microspheres on experimental osteoarthritis in the rabbit knee. Arthritis & Rheumatism. 54(1). 264–270. 92 indexed citations
19.
Sakao, Kei, et al.. (2003). Analysis of fractures in patients with rheumatoid arthritis. 25(1). 429–431. 1 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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