Sadakazu Usuda

1.6k total citations
28 papers, 1.4k citations indexed

About

Sadakazu Usuda is a scholar working on Epidemiology, Hepatology and Molecular Biology. According to data from OpenAlex, Sadakazu Usuda has authored 28 papers receiving a total of 1.4k indexed citations (citations by other indexed papers that have themselves been cited), including 16 papers in Epidemiology, 13 papers in Hepatology and 8 papers in Molecular Biology. Recurrent topics in Sadakazu Usuda's work include Hepatitis B Virus Studies (16 papers), Hepatitis C virus research (12 papers) and Monoclonal and Polyclonal Antibodies Research (8 papers). Sadakazu Usuda is often cited by papers focused on Hepatitis B Virus Studies (16 papers), Hepatitis C virus research (12 papers) and Monoclonal and Polyclonal Antibodies Research (8 papers). Sadakazu Usuda collaborates with scholars based in Japan, United States and Uzbekistan. Sadakazu Usuda's co-authors include Yuzo Miyakawa, Makoto Mayumi, Hiroaki Okamoto, Hiroko Iwanari, Fumio Tsuda, Kiyoshi Baba, Masashi Mizokami, Ryuzo Ueda, Hideaki Kato and Shunji Mishiro and has published in prestigious journals such as Journal of Biological Chemistry, The Journal of Immunology and Gastroenterology.

In The Last Decade

Sadakazu Usuda

27 papers receiving 1.3k citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Sadakazu Usuda Japan	16	1.1k	958	216	164	85	28	1.4k
Senko Tsukuda Japan	17	1.0k 1.0×	747 0.8×	354 1.6×	172 1.0×	57 0.7×	34	1.4k
J. L. Gerin United States	17	938 0.9×	643 0.7×	167 0.8×	309 1.9×	34 0.4×	27	1.2k
Gennadiy Koev United States	19	564 0.5×	703 0.7×	237 1.1×	429 2.6×	49 0.6×	25	1.3k
Eric Ferrari United States	13	581 0.5×	864 0.9×	470 2.2×	492 3.0×	70 0.8×	17	1.4k
Tsuyoshi Adachi Japan	12	406 0.4×	694 0.7×	370 1.7×	305 1.9×	37 0.4×	20	1.2k
Musaddeq Hussain United States	14	283 0.3×	279 0.3×	619 2.9×	151 0.9×	71 0.8×	25	1.2k
J C Pugh United States	16	877 0.8×	556 0.6×	193 0.9×	358 2.2×	65 0.8×	23	1.1k
Asako Murayama Japan	18	882 0.8×	975 1.0×	514 2.4×	150 0.9×	18 0.2×	50	1.6k
Ann W. Walsh United States	10	1.1k 1.0×	1.0k 1.1×	147 0.7×	307 1.9×	33 0.4×	11	1.4k
Xuanyong Lu United States	16	473 0.4×	319 0.3×	246 1.1×	145 0.9×	35 0.4×	26	781

Countries citing papers authored by Sadakazu Usuda

Since Specialization

Citations

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

Fields of papers citing papers by Sadakazu Usuda

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Sadakazu Usuda

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

Yamasaki, Chihiro, Miho Kataoka, Yumiko Kato, et al.. (2010). In Vitro Evaluation of Cytochrome P450 and Glucuronidation Activities in Hepatocytes Isolated from Liver-Humanized Mice. Drug Metabolism and Pharmacokinetics. 25(6). 539–550. 61 indexed citations

Kato, Hideaki, Robert G. Gish, Natalie Bzowej, et al.. (2004). Eight genotypes (A–H) of hepatitis B virus infecting patients from San Francisco and their demographic, clinical, and virological characteristics. Journal of Medical Virology. 73(4). 516–521. 55 indexed citations

Suzuki, Seiji, Fuminaka Sugauchi, Etsuro Orito, et al.. (2003). Distribution of hepatitis B virus (HBV) genotypes among HBV carriers in the cote d'Ivoire: Complete genome sequence and phylogenetic relatedness of HBV genotype E. Journal of Medical Virology. 69(4). 459–465. 63 indexed citations

Kato, Hideaki, Etsuro Orito, Fuminaka Sugauchi, et al.. (2003). Frequent coinfection with hepatitis B virus strains of distinct genotypes detected by hybridization with type-specific probes immobilized on a solid-phase support. Journal of Virological Methods. 110(1). 29–35. 43 indexed citations

Furusyo, Norihiro, Hisashi Nakashima, Kenichiro Kashiwagi, et al.. (2002). Clinical outcomes of hepatitis B virus (HBV) genotypes B and C in Japanese patients with chronic HBV infection.. American Journal of Tropical Medicine and Hygiene. 67(2). 151–157. 26 indexed citations

Kato, Hideaki, Ruslan Ruzibakiev, Nadira Yuldasheva, et al.. (2002). Hepatitis B virus genotypes in Uzbekistan and validity of two different systems for genotyping. Journal of Medical Virology. 67(4). 477–483. 42 indexed citations

Kato, Hideaki, Etsuro Orito, Fuminaka Sugauchi, et al.. (2001). Determination of hepatitis B virus genotype G by polymerase chain reaction with hemi-nested primers. Journal of Virological Methods. 98(2). 153–159. 77 indexed citations

Usuda, Sadakazu, Hiroaki Okamoto, Takeshi Tanaka, et al.. (2000). Differentiation of hepatitis B virus genotypes D and E by ELISA using monoclonal antibodies to epitopes on the preS2-region product. Journal of Virological Methods. 87(1-2). 81–89. 80 indexed citations

Takahashi, Kazuaki, Betsy Brotman, Sadakazu Usuda, Shunji Mishiro, & Alfred M. Prince. (2000). Full-Genome Sequence Analyses of Hepatitis B Virus (HBV) Strains Recovered from Chimpanzees Infected in the Wild: Implications for an Origin of HBV. Virology. 267(1). 58–64. 85 indexed citations

10.

Usuda, Sadakazu, Hiroaki Okamoto, Hiroko Iwanari, et al.. (1999). Serological detection of hepatitis B virus genotypes by ELISA with monoclonal antibodies to type-specific epitopes in the preS2-region product. Journal of Virological Methods. 80(1). 97–112. 268 indexed citations

11.

Usuda, Sadakazu, Hiroaki Okamoto, Takeshi Tanaka, et al.. (1997). A monoclonal antibody against a hepatitis B e antigen epitope borne by six amino acids encoded by the precore region. Journal of Virological Methods. 68(2). 207–215. 4 indexed citations

12.

Tsuda, Fumio, T. Matsui, Takeshi Tanaka, et al.. (1986). Application of hepatitis B core particles produced by human primary hepatocellular carcinoma (PLC/342) propagated in nude mice to the determination of anti-HBc by passive hemagglutination. Journal of Immunological Methods. 89(2). 221–227. 2 indexed citations

13.

Ohnuma, Hiroyuki, Kazuaki Takahashi, Shinji Kishimoto, et al.. (1986). Large Hepatitis B Surface Antigen Polypeptides of Dane Particles With the Receptor for Polymerized Human Serum Albumin. Gastroenterology. 90(3). 695–701. 29 indexed citations

14.

Imai, Mitsunobu, Fumio Tsuda, Seiichi Furuta, et al.. (1985). Immunoglobulin a antibody against hepatitis B core antigen in the acute and persistent infection with hepatitis B virus. Gastroenterology. 89(5). 1109–1113. 24 indexed citations

15.

Tanaka, Eiji, Mitsunobu Imai, Sadakazu Usuda, et al.. (1985). A two-site sandwich radioimmunoassay of human gamma interferon with monoclonal antibodies. Journal of Immunological Methods. 77(2). 275–282. 15 indexed citations

16.

Tachibana, Katsumi, Eiji Tanaka, Sadakazu Usuda, et al.. (1984). A two-site sandwich radioimmunoassay of β2-microglobulin with monoclonal antibodies. Journal of Immunological Methods. 75(1). 43–51. 8 indexed citations

17.

Yanase, Y., Eiji Tanaka, Sadakazu Usuda, et al.. (1983). A two-site sandwich radioimmunoassay of human fibroblast (beta)-interferon with monoclonal antibodies. Journal of Immunological Methods. 64(1-2). 31–37. 7 indexed citations

18.

Imai, Mitsunobu, et al.. (1983). A pitfall in two-site sandwich ‘one-step’ immunoassay with monoclonal antibodies for the determination of human alpha-fetoprotein. Journal of Immunological Methods. 56(1). 13–17. 14 indexed citations

19.

Fukui, Hiroshi, Koichi Koshimizu, Yoshimitsu Yamazaki, & Sadakazu Usuda. (1977). Structures of Plant Growth Inhibitors in Seeds ofCucurbita pepoL. Agricultural and Biological Chemistry. 41(1). 189–194. 1 indexed citations

20.

Fukui, Hiroshi, Koichi Koshimizu, Sadakazu Usuda, & Yoshimitsu Yamazaki. (1977). Isolation of Plant Growth Regulators from Seeds ofCucurbita pepoL. Agricultural and Biological Chemistry. 41(1). 175–180. 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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