Akitoshi Koga

1.5k total citations
45 papers, 1.1k citations indexed

About

Akitoshi Koga is a scholar working on Surgery, Oncology and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Akitoshi Koga has authored 45 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 27 papers in Surgery, 19 papers in Oncology and 12 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Akitoshi Koga's work include Drug Transport and Resistance Mechanisms (13 papers), Gallbladder and Bile Duct Disorders (11 papers) and Pediatric Hepatobiliary Diseases and Treatments (10 papers). Akitoshi Koga is often cited by papers focused on Drug Transport and Resistance Mechanisms (13 papers), Gallbladder and Bile Duct Disorders (11 papers) and Pediatric Hepatobiliary Diseases and Treatments (10 papers). Akitoshi Koga collaborates with scholars based in Japan and China. Akitoshi Koga's co-authors include Fumio Nakayama, Kazuo Chijiiwa, Kohji Miyazaki, Hitoshi Ichimiya, Satoru Todo, Shinji Matsumoto, Minoru Tanaka, Kohji Yamaguchi, S Kuroki and Nobuyuki Hamanaka and has published in prestigious journals such as Gastroenterology, Cancer and Cellular and Molecular Life Sciences.

In The Last Decade

Akitoshi Koga

44 papers receiving 1.1k citations

Peers

Akitoshi Koga

SURGE

PRM

ONCOL

HEPAT

EPIDE

Brigitte Hermelin France

Kiyohiko Yamashita Japan

Y Ogawa Japan

Shigeki Yokomuro Japan

Phillips Mj Canada

Yasuhiko Fukuda Japan

J. Lawrence Werther United States

Luca Maroni Italy

Michiko Yamagata Japan

Keinosuke Ishido Japan

Brigitte Hermelin France

Akitoshi Koga

513 ×0.6

SURGE

219 ×0.4

PRM

443 ×1.5

ONCOL

150 ×0.8

HEPAT

186 ×1.3

EPIDE

Citations per year, relative to Akitoshi Koga Akitoshi Koga (= 1×) peers Brigitte Hermelin

Countries citing papers authored by Akitoshi Koga

Since Specialization

Citations

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

Fields of papers citing papers by Akitoshi Koga

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Akitoshi Koga

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

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Kanaya, Shigehiko, Kouichi Tokuda, Shôzô Tanaka, et al.. (1998). [Rare case of ulcerative colitis and ankylosing spondylitis associated with aortitis and severe aortic valve insufficiency].. PubMed. 87(11). 2316–8. 1 indexed citations

Satoh, Hiroshi & Akitoshi Koga. (1997). Fine structure of cholesterolosis in the human gallbladder and the mechanism of lipid accumulation. Microscopy Research and Technique. 39(1). 14–21. 2 indexed citations

Okabe, Hirohisa, et al.. (1994). Increased sinusoidal efflux of reduced and oxidized glutathione in rats with endotoxin/D-galactosamine hepatitis.. PubMed. 42(3). 115–20. 3 indexed citations

Irita, Kazuo, et al.. (1994). The effects of dichloroacetate on liver damage and circulating fuels in rats exposed to carbon tetrachloride. Journal of Gastroenterology and Hepatology. 9(1). 26–29. 3 indexed citations

Chijiiwa, Kazuo & Akitoshi Koga. (1993). Surgical management and long-term follow-up of patients with choledochal cysts. The American Journal of Surgery. 165(2). 238–242. 113 indexed citations

Ogawa, Takahiro, et al.. (1992). Promoting effects of both dietary cholesterol and cholestyramine on pancreatic carcinogenesis initiated by N-nitrosobis(2-oxopropyl)amine in Syrian golden hamsters. Carcinogenesis. 13(11). 2047–2052. 6 indexed citations

Chijiiwa, Kazuo, et al.. (1991). Fibronectin: a possible factor promoting cholesterol monohydrate crystallization in bile. Biochimica et Biophysica Acta (BBA) - Lipids and Lipid Metabolism. 1086(1). 44–48. 35 indexed citations

Koga, Akitoshi, et al.. (1991). Ultrastructure of Well-Differentiated Adenocarcinoma of the Gallbladder. Ultrastructural Pathology. 15(1). 41–48. 8 indexed citations

Nakayama, Fumio, et al.. (1991). Hepatolithiasis in East Asia: Comparison between Japan and China. Journal of Gastroenterology and Hepatology. 6(2). 155–158. 11 indexed citations

10.

Koga, Akitoshi, et al.. (1990). TIME-RELATED MORPHOLOGICAL CHANGES IN COLD-STORED RAT LIVERS. Transplantation. 50(5). 745–754. 60 indexed citations

11.

Koga, Akitoshi, et al.. (1988). Effects of bile duct obstruction and decompression on hepatic microsomal mixed function oxidase system in rats. Experimental and Molecular Pathology. 49(1). 62–74. 7 indexed citations

12.

Koga, Akitoshi, et al.. (1988). Effects of partial hepatectomy on microtubules and hepatocellular transport of indocyanine green in rats. Virchows Archiv B Cell Pathology Including Molecular Pathology. 56(1). 5–12. 5 indexed citations

13.

Obata, Hideaki & Akitoshi Koga. (1988). Glucose intolerance and pancreatic endocrine dysfunction in dogs with obstructive jaundice. Gastroenterologia Japonica. 23(6). 666–672. 5 indexed citations

14.

Koga, Akitoshi, et al.. (1987). Effects of bile acids and endotoxin on the function and morphology of cultured hamster Kupffer cells. Virchows Archiv B Cell Pathology Including Molecular Pathology. 54(1). 303–311. 11 indexed citations

15.

Koga, Akitoshi, et al.. (1985). Ultrasonographic detection of early and curable carcinoma of the gallbladder. British journal of surgery. 72(9). 728–730. 45 indexed citations

16.

Koga, Akitoshi, Kohji Miyazaki, Hitoshi Ichimiya, & Fumio Nakayama. (1984). Choice of treatment for hepatolithiasis based on pathological findings. World Journal of Surgery. 8(1). 36–40. 28 indexed citations

17.

Todo, Satoru, et al.. (1983). Management of massive hemobilia with angiographic embolization. Surgery Today. 13(4). 348–353. 8 indexed citations

18.

Koga, Akitoshi, et al.. (1977). [Structural study of black pigment gallstones].. PubMed. 74(9). 1154–9. 1 indexed citations

19.

Koga, Akitoshi. (1972). Some Observations on the Fine Structure of the Human Mesonephros. Archivum histologicum japonicum. 34(2). 185–201. 7 indexed citations

20.

Koga, Akitoshi. (1971). Morphogenesis of intrahepatic bile ducts of the human fetus. Anatomy and Embryology. 135(2). 156–184. 49 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