K Okita

2.8k total citations
56 papers, 2.2k citations indexed

About

K Okita is a scholar working on Surgery, Hepatology and Epidemiology. According to data from OpenAlex, K Okita has authored 56 papers receiving a total of 2.2k indexed citations (citations by other indexed papers that have themselves been cited), including 22 papers in Surgery, 21 papers in Hepatology and 17 papers in Epidemiology. Recurrent topics in K Okita's work include Liver Disease Diagnosis and Treatment (15 papers), Helicobacter pylori-related gastroenterology studies (8 papers) and Hepatitis C virus research (8 papers). K Okita is often cited by papers focused on Liver Disease Diagnosis and Treatment (15 papers), Helicobacter pylori-related gastroenterology studies (8 papers) and Hepatitis C virus research (8 papers). K Okita collaborates with scholars based in Japan, United States and Taiwan. K Okita's co-authors include Mikio Karita, Hideo Yanai, Masahiro Tada, Takanobu Nakazawa, Akira Murakami, Tadayoshi Takemoto, Muhammad Morshed, Masataka Tsuda, T. Aibe and I SAKAIDA and has published in prestigious journals such as Hepatology, JNCI Journal of the National Cancer Institute and Cancer.

In The Last Decade

K Okita

56 papers receiving 2.1k citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
K Okita Japan	23	966	669	584	545	350	56	2.2k
Hideyuki Tamai Japan	26	1.5k 1.5×	1.1k 1.7×	414 0.7×	395 0.7×	365 1.0×	92	2.3k
Jan Bornschein Germany	26	923 1.0×	524 0.8×	367 0.6×	466 0.9×	203 0.6×	84	2.1k
Abdurrahman Kadayıfçı Türkiye	22	809 0.8×	307 0.5×	226 0.4×	843 1.5×	227 0.6×	86	1.9k
Fang‐Ku P’eng Taiwan	25	1.0k 1.0×	596 0.9×	458 0.8×	442 0.8×	73 0.2×	63	2.1k
Akiyoshi Nishio Japan	27	1.2k 1.2×	289 0.4×	505 0.9×	879 1.6×	176 0.5×	118	2.6k
Young Woon Chang South Korea	22	515 0.5×	295 0.4×	728 1.2×	757 1.4×	171 0.5×	135	1.7k
B Dragosics Austria	23	1.4k 1.5×	960 1.4×	205 0.4×	398 0.7×	810 2.3×	46	3.2k
Tadayoshi Takemoto Japan	22	1.8k 1.9×	1.1k 1.6×	178 0.3×	289 0.5×	732 2.1×	133	2.5k
Sung Bum Cho South Korea	26	688 0.7×	588 0.9×	659 1.1×	435 0.8×	200 0.6×	144	2.1k
Wan‐Sik Lee South Korea	28	967 1.0×	908 1.4×	134 0.2×	179 0.3×	447 1.3×	137	2.2k

Countries citing papers authored by K Okita

Since Specialization

Citations

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

Fields of papers citing papers by K Okita

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of K Okita

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

Hino, Keisuke, Fumie Kurokawa, Sohji Nishina, et al.. (2008). Validating a Markov Model of Treatment for Hepatitis C Virus-related Hepatocellular Carcinoma. Methods of Information in Medicine. 47(6). 529–540. 4 indexed citations

Takayasu, Kenichi, et al.. (2007). First International Symposium of Current Issues for Nationwide Survey of Primary Liver Cancer in Korea, Taiwan and Japan. Japanese Journal of Clinical Oncology. 37(3). 233–240. 3 indexed citations

Yanai, Hideo, K Okita, Kazuyuki Tadatomo, et al.. (2006). Preliminary Experience with a Gastrointestinal Endoscope Using a White Light-Emitting Diode. Endoscopy. 38(3). 290–291. 3 indexed citations

SAKAIDA, I, Shuji Terai, & K Okita. (2005). Use of bone marrow cells for the development of cellular therapy in liver diseases. Hepatology Research. 31(4). 195–196. 1 indexed citations

Ide, Tatsuya, Ryukichi Kumashiro, H Kumada, et al.. (2005). Timing of interferon therapy and sources of infection in patients with acute hepatitis C. Hepatology Research. 34(1). 35–40. 8 indexed citations

SAKAIDA, I, et al.. (2005). The effect of a late evening snack in patients with liver cirrhosis. Hepatology Research. 31(2). 95–103. 49 indexed citations

Fujiwara, Daisuke, Keisuke Hino, Yoshiyuki Y. Yamaguchi, et al.. (2004). Type I interferon receptor and response to interferon therapy in chronic hepatitis C patients: a prospective study. Journal of Viral Hepatitis. 11(2). 136–140. 16 indexed citations

Fujiwara, Keiichi, Osamu Yokosuka, Toshiki Ehata, et al.. (2002). Association between severity of type A hepatitis and nucleotide variations in the 5` non-translated region of hepatitis A virus RNA: strains from fulminant hepatitis have fewer nucleotide substitutions. Gut. 51(1). 82–88. 61 indexed citations

Hino, Keisuke, Yasuhiro Satoh, Daisuke Fujiwara, et al.. (2002). Interferon retreatment reduces or delays the incidence of hepatocellular carcinoma in patients with chronic hepatitis C. Journal of Viral Hepatitis. 9(5). 370–376. 20 indexed citations

10.

Korenaga, Masataka, Keisuke Hino, Yoshiharu Katoh, et al.. (2001). A possible role of hypervariable region 1 quasispecies in escape of hepatitis C virus particles from neutralization. Journal of Viral Hepatitis. 8(5). 331–340. 14 indexed citations

11.

Yasunaga, Masahiro, et al.. (1996). Hepatocyte proliferation induced in rats by lead nitrate is suppressed by several tumor necrosis factor α inhibitors. Hepatology. 23(1). 104–114. 30 indexed citations

12.

Sakaida, Isao, et al.. (1995). Protection against Acetaminophen-Induced Liver Injury in Vivo by an Iron Chelator, Deferoxamine. Scandinavian Journal of Gastroenterology. 30(1). 61–67. 55 indexed citations

13.

Terai, Shuji, et al.. (1995). High MDM2 mRNA expression in hepatoblastoma cell-lines. International Hepatology Communications. 3(6). 330–336. 3 indexed citations

14.

Karita, Mikio, Qian Li, Domingo Cantero, & K Okita. (1994). Establishment of a small animal model for human Helicobacter pylori infection using germ-free mouse.. PubMed. 89(2). 208–13. 65 indexed citations

15.

Karita, Mikio, Masahiro Tada, K Okita, Momoko Tsuda, & Takanobu Nakazawa. (1993). Evaluation of methylene blue and triple therapy for eradication of Helicobacter pylori infection in the nude mouse model. European Journal of Gastroenterology & Hepatology. 5. 3 indexed citations

16.

Karita, Mikio, Qian Li, & K Okita. (1993). Evaluation of new therapy for eradication of H. pylori infection in nude mouse model.. PubMed. 88(9). 1366–72. 20 indexed citations

17.

Okita, K, et al.. (1993). Anti-growth effects with components of Sho-saiko-to (TJ-9) on cultured human hepatoma cells. European Journal of Cancer Prevention. 2(2). 169–176. 62 indexed citations

18.

Tada, Masahiro, Akira Murakami, Mikio Karita, Hideo Yanai, & K Okita. (1993). Endoscopic Resection of Early Gastric Cancer. Endoscopy. 25(7). 445–450. 302 indexed citations

19.

Yanai, Hideo, Masahiro Tada, T. Aibe, et al.. (1992). Application of Ultrasonic Probes Prior to Endoscopic Resection of Early Gastric Cancer. Endoscopy. 24(S 1). 329–333. 38 indexed citations

20.

Okita, K, L. H. Kligman, & Emmanuel Farber. (1975). A New Common Marker for Premalignant and Malignant Hepatocytes Induced in the Rat by Chemical Carcinogens2. JNCI Journal of the National Cancer Institute. 54(1). 199–202. 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.

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