Toshiki Ehata

1.4k total citations
20 papers, 1.2k citations indexed

About

Toshiki Ehata is a scholar working on Epidemiology, Hepatology and Infectious Diseases. According to data from OpenAlex, Toshiki Ehata has authored 20 papers receiving a total of 1.2k indexed citations (citations by other indexed papers that have themselves been cited), including 18 papers in Epidemiology, 18 papers in Hepatology and 8 papers in Infectious Diseases. Recurrent topics in Toshiki Ehata's work include Hepatitis B Virus Studies (18 papers), Hepatitis C virus research (16 papers) and Liver Disease Diagnosis and Treatment (10 papers). Toshiki Ehata is often cited by papers focused on Hepatitis B Virus Studies (18 papers), Hepatitis C virus research (16 papers) and Liver Disease Diagnosis and Treatment (10 papers). Toshiki Ehata collaborates with scholars based in Japan and Taiwan. Toshiki Ehata's co-authors include Osamu Yokosuka, Masao Ohto, Masao Omata, Kei Hosoda, Wan‐Long Chuang, Fumio Imazeki, Hiromitsu Saisho, Masao Omata, Yoshihiro Ito and Keiichi Fujiwara and has published in prestigious journals such as New England Journal of Medicine, Journal of Clinical Investigation and Gastroenterology.

In The Last Decade

Toshiki Ehata

20 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
Toshiki Ehata Japan 14 1.1k 1.1k 190 47 36 20 1.2k
Ulrike C. Wend Germany 17 934 0.9× 980 0.9× 171 0.9× 45 1.0× 27 0.8× 28 1.1k
Gloria Moraleda Spain 14 798 0.7× 883 0.8× 243 1.3× 48 1.0× 22 0.6× 29 973
I‐Jane Sheen Taiwan 16 1.1k 1.0× 867 0.8× 294 1.5× 19 0.4× 12 0.3× 27 1.2k
Montserrat Cotrina Spain 13 789 0.7× 600 0.6× 294 1.5× 17 0.4× 16 0.4× 18 900
Frances V. Wells United States 12 532 0.5× 675 0.6× 184 1.0× 54 1.1× 15 0.4× 15 801
L. O. Magnius Sweden 8 1.3k 1.2× 1.4k 1.3× 165 0.9× 58 1.2× 90 2.5× 12 1.4k
S. M. Bowyer South Africa 11 571 0.5× 551 0.5× 117 0.6× 30 0.6× 15 0.4× 17 666
Caroline Scholtès France 20 915 0.9× 867 0.8× 308 1.6× 50 1.1× 37 1.0× 46 1.2k
Yoshiyuki Nakatsuji Japan 10 650 0.6× 661 0.6× 163 0.9× 27 0.6× 5 0.1× 25 852
Bert L. Murphy United States 13 375 0.3× 402 0.4× 137 0.7× 41 0.9× 8 0.2× 19 538

Countries citing papers authored by Toshiki Ehata

Since Specialization
Citations

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

Fields of papers citing papers by Toshiki Ehata

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Toshiki Ehata

This figure shows the co-authorship network connecting the top 25 collaborators of Toshiki Ehata. A scholar is included among the top collaborators of Toshiki Ehata 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 Toshiki Ehata. Toshiki Ehata 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.
2.
Fujiwara, Keiichi, Osamu Yokosuka, Toshiki Ehata, Fumio Imazeki, & Hiromitsu Saisho. (2000). PCR-SSCP Analysis of 5"-Nontranslated Region of Hepatitis A Viral RNA:. Digestive Diseases and Sciences. 45(12). 2422–2427. 21 indexed citations
3.
4.
5.
Fujiwara, Keiichi, Osamu Yokosuka, Toshiki Ehata, et al.. (1998). The Two Different States of Hepatitis B Virus DNA in Asymptomatic Carriers (HBe-Antigen-Positive versus Anti-HBe-Positive Asymptomatic Carriers). Digestive Diseases and Sciences. 43(2). 368–376. 43 indexed citations
6.
Kanda, Tatsuo, Osamu Yokosuka, Fumio Imazeki, et al.. (1997). GB virus-C RNA in Japanese patients with hepatocellular carcinoma and cirrhosis. Journal of Hepatology. 27(3). 464–469. 27 indexed citations
7.
Kanda, Tatsuo, Osamu Yokosuka, Toshiki Ehata, et al.. (1997). Detection of GBV-C RNA in patients with non-A-E fulminant hepatitis by reverse-transcription polymerase chain reaction. Hepatology. 25(5). 1261–1265. 58 indexed citations
8.
Ehata, Toshiki, Osamu Yokosuka, Fumio Imazeki, & Masao Omata. (1996). Point mutation in precore region of hepatitis B virus: Sequential changes from ‘wild’ to ‘mutant'. Journal of Gastroenterology and Hepatology. 11(6). 566–574. 4 indexed citations
9.
Yokosuka, Osamu, Toshiki Ehata, Wan‐Long Chuang, et al.. (1995). Detection of hepatitis B virus precore stop codon mutants by selective amplification method: Frequent detection of precore mutants in hepatitis B e antigen positive healthy carriers. Journal of Gastroenterology and Hepatology. 10(4). 419–425. 16 indexed citations
10.
Ehata, Toshiki, Osamu Yokosuka, & Masao Omata. (1995). [Epitopes of hepatitis B virus nucleocapsid protein].. PubMed. 53 Suppl(Pt 2). 148–54. 1 indexed citations
11.
Chuang, Wan‐Long, Masao Omata, Toshiki Ehata, et al.. (1994). Coinfection study of precore mutant and wild-type hepatitis B-like virus in ducklings. Hepatology. 19(3). 569–576. 17 indexed citations
12.
Ehata, Toshiki, Masao Omata, Wan‐Long Chuang, et al.. (1993). Mutations in core nucleotide sequence of hepatitis B virus correlate with fulminant and severe hepatitis.. Journal of Clinical Investigation. 91(3). 1206–1213. 126 indexed citations
13.
Chuang, Wan‐Long, Masao Omata, Toshiki Ehata, Osamu Yokosuka, & Masao Ohto. (1993). Concentrating missense mutations in core gene of hepatitis B virus. Digestive Diseases and Sciences. 38(4). 594–600. 28 indexed citations
14.
Chuang, Wan‐Long, Masao Omata, Toshiki Ehata, et al.. (1993). Precore mutations and core clustering mutations in chronic hepatitis B virus infection. Gastroenterology. 104(1). 263–271. 99 indexed citations
15.
Ehata, Toshiki, Wan‐Long Chuang, & Masao Omata. (1993). Mutations of hepatitis B virus liver disease. Gastroenterologia Japonica. 28(S4). 7–11. 2 indexed citations
16.
Imazeki, Fumio, Toshiki Ehata, & Masao Omata. (1992). [Analysis of mutations in precore and core regions of HBV genome by PCR].. PubMed. 50 Suppl. 233–8. 1 indexed citations
17.
Ehata, Toshiki, Masao Omata, Osamu Yokosuka, Kei Hosoda, & Masao Ohto. (1992). Variations in codons 84-101 in the core nucleotide sequence correlate with hepatocellular injury in chronic hepatitis B virus infection.. Journal of Clinical Investigation. 89(1). 332–338. 147 indexed citations
18.
Ehata, Toshiki, et al.. (1991). Amino acid residues of core region of hepatitis B virus. Asymptomatic carriers versus patients with liver disease. Journal of Gastroenterology and Hepatology. 6(3). 292–296. 8 indexed citations
19.
Omata, Masao, Toshiki Ehata, Osamu Yokosuka, Kei Hosoda, & Masao Ohto. (1991). Mutations in the Precore Region of Hepatitis B Virus DNA in Patients with Fulminant and Severe Hepatitis. New England Journal of Medicine. 324(24). 1699–1704. 432 indexed citations
20.
Yokosuka, Osamu, Masao Omata, Kazuhiko Hosoda, et al.. (1991). Detection and direct sequencing of hepatitis B virus genome by DNA amplification method. Gastroenterology. 100(1). 175–181. 39 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.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by Ulrike C. Wend Breakdown of academic impact, for papers by Gloria Moraleda Breakdown of academic impact, for papers by I‐Jane Sheen Breakdown of academic impact, for papers by Montserrat Cotrina Breakdown of academic impact, for papers by Frances V. Wells Breakdown of academic impact, for papers by L. O. Magnius Breakdown of academic impact, for papers by S. M. Bowyer Breakdown of academic impact, for papers by Caroline Scholtès Breakdown of academic impact, for papers by Yoshiyuki Nakatsuji Breakdown of academic impact, for papers by Bert L. Murphy
Rankless by CCL
2026