Keiji Maruyama

1.3k total citations
50 papers, 1.1k citations indexed

About

Keiji Maruyama is a scholar working on Molecular Biology, Surgery and Oncology. According to data from OpenAlex, Keiji Maruyama has authored 50 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 14 papers in Molecular Biology, 13 papers in Surgery and 11 papers in Oncology. Recurrent topics in Keiji Maruyama's work include Genetic factors in colorectal cancer (5 papers), Colorectal Cancer Treatments and Studies (5 papers) and Wnt/β-catenin signaling in development and cancer (5 papers). Keiji Maruyama is often cited by papers focused on Genetic factors in colorectal cancer (5 papers), Colorectal Cancer Treatments and Studies (5 papers) and Wnt/β-catenin signaling in development and cancer (5 papers). Keiji Maruyama collaborates with scholars based in Japan, China and United Kingdom. Keiji Maruyama's co-authors include Atsushi Ochiai, Setsuo Hirohashi, Shozo Baba, Yasuyoshi Naishiro, Tesshi Yamada, Reiko Hayashi, Chihaya Maesawa, Atsushi Yamashita, Takayuki Sugiura and Saori Oka and has published in prestigious journals such as Journal of Clinical Oncology, Cancer and Oncogene.

In The Last Decade

Keiji Maruyama

44 papers receiving 1.1k citations

Peers

Keiji Maruyama

ONCOL

CMN

SURGE

Almut Dufner Switzerland

David F. Restuccia Switzerland

Hung Q. Nguyen United States

Richard T. Pickard United States

Cecilia Hurtado Canada

Mei Zheng China

Yi Xie China

Osamu Sakai Japan

Jacques Abello France

Laurent Baricault France

Almut Dufner Switzerland

Keiji Maruyama

1.4k ×2.2

219 ×0.8

ONCOL

118 ×0.6

CMN

85 ×0.5

SURGE

208 ×1.4

Citations per year, relative to Keiji Maruyama Keiji Maruyama (= 1×) peers Almut Dufner

Countries citing papers authored by Keiji Maruyama

Since Specialization

Citations

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

Fields of papers citing papers by Keiji Maruyama

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Keiji Maruyama

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

Park, Eun‐Sil, Michio Suzuki, Masanobu Kimura, et al.. (2016). Epidemiological and pathological study of feline morbillivirus infection in domestic cats in Japan. BMC Veterinary Research. 12(1). 228–228. 40 indexed citations

Park, Eun‐Sil, Michio Suzuki, Masanobu Kimura, et al.. (2014). Identification of a natural recombination in the F and H genes of feline morbillivirus. Virology. 468-470. 524–531. 30 indexed citations

Watanabe, Tamaki, et al.. (2010). Use Situation of Supplement and Health Food for Pediatrics Patients in Teikyo University Hospital Pediatrics Outpatient Clinic. 11(3). 156–162. 2 indexed citations

Oka, Saori, et al.. (2008). 2-Arachidonoyl-sn-glycero-3-phosphoinositol: A Possible Natural Ligand for GPR55. The Journal of Biochemistry. 145(1). 13–20. 158 indexed citations

Igarashi, Hisaki, Kimihiro Yamashita, Masaya Suzuki, et al.. (2005). Simultaneous imaging of membrane antigen and the corresponding chromosomal locus in pathology archives. Pathology International. 55(12). 753–756. 7 indexed citations

Wang, Jiandong, Hideki Kataoka, Masaya Suzuki, et al.. (2005). Downregulation of EphA7 by hypermethylation in colorectal cancer. Oncogene. 24(36). 5637–5647. 91 indexed citations

Numazawa, Satoshi, Keiji Maruyama, Yosuke Kawahara, et al.. (2005). Impaired nuclear translocation of CAR in hepatic preneoplastic lesions: Association with an attenuated CYP2B induction by phenobarbital. FEBS Letters. 579(17). 3560–3564. 9 indexed citations

Nakamura, Toshio, et al.. (2004). Refractory Ulcerative Colitis Complicated by a Cytomegaloviral Infection Requiring Surgery: Report of a Case. Surgery Today. 34(1). 68–71. 9 indexed citations

Nakamura, Toshio, et al.. (2003). A CASE OF ABSCESS OF THE TRANSVERSE COLON TREATED BY ENDOSCOPIC DRAINAGE. Acta gastro-enterologica belgica. 45(10). 2100–2103.

10.

Nakamura, Toshio, Katsutoshi Miura, Yuji Maruo, et al.. (2002). Aggressive angiomyxoma of the perineum originating from the rectal wall. Journal of Gastroenterology. 37(4). 303–308. 16 indexed citations

11.

Nakamura, Toshio, et al.. (2002). Diverticulitis causing a high serum level of carbohydrate antigen 19-9: report of a case.. Surgery Today. 32(3). 282–284. 8 indexed citations

12.

Nakamura, Toshio, Shohachi Suzuki, Yoshihiro Yokoi, et al.. (2002). Duodenal cancer in a patient with Peutz-Jeghers syndrome: molecular analysis. Journal of Gastroenterology. 37(5). 376–380. 9 indexed citations

13.

Nakamura, Toshio, et al.. (2001). A Case of Colonic Perforation Complicated with Acute Pancreatitis.. The Japanese Journal of Gastroenterological Surgery. 34(6). 624–627. 2 indexed citations

14.

Maruyama, Keiji, et al.. (2001). Expression of heparanase in oral cancer cell lines and oral cancer tissues. Oral Oncology. 37(2). 177–184. 55 indexed citations

15.

Maruyama, Keiji, Atsushi Ochiai, Shingo Akimoto, et al.. (2000). Cytoplasmic Beta-Catenin Accumulation as a Predictor of Hematogenous Metastasis in Human Colorectal Cancer. Oncology. 59(4). 302–309. 91 indexed citations

16.

Maruyama, Keiji, et al.. (1998). [Dysfunction of E-cadherin-catenin system in invasion and metastasis of colorectal cancer].. PubMed. 99(7). 402–8. 5 indexed citations

17.

Uchida, Hiroyuki, Hiroshi Ando, Keiji Maruyama, et al.. (1998). Genetic Alterations of Mixed Hyperplastic Adenomatous Polyps in the Colon and Rectum. Japanese Journal of Cancer Research. 89(3). 299–306. 44 indexed citations

18.

Maruyama, Keiji, Tatsuo Tanaka, Shozo Baba, et al.. (1996). p53 Accumulation in Colorectal Cancer with Hepatic Metastasis. Japanese Journal of Cancer Research. 87(4). 368–376. 10 indexed citations

19.

Igarashi, Hisaki, Haruhiko Sugimura, Keiji Maruyama, et al.. (1994). Alteration of immunoreactivity by hydrated autoclaving, microwave treatment, and simple heating of paraffin‐embedded tissue sections. Apmis. 102(1-6). 295–307. 52 indexed citations

20.

Maruyama, Keiji, Kiyotsugu Yoshikawa, Hiroshi Takemoto, et al.. (1993). A Case of Hepatocellular Adenoma Associated with Oral Contraceptive.. The Japanese Journal of Gastroenterological Surgery. 26(11). 2658–2662.

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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