Hideaki Niiyama

2.5k total citations · 1 hit paper
25 papers, 1.9k citations indexed

About

Hideaki Niiyama is a scholar working on Surgery, Physiology and Biotechnology. According to data from OpenAlex, Hideaki Niiyama has authored 25 papers receiving a total of 1.9k indexed citations (citations by other indexed papers that have themselves been cited), including 13 papers in Surgery, 8 papers in Physiology and 6 papers in Biotechnology. Recurrent topics in Hideaki Niiyama's work include Telomeres, Telomerase, and Senescence (7 papers), Cancer Research and Treatments (5 papers) and Gastrointestinal disorders and treatments (4 papers). Hideaki Niiyama is often cited by papers focused on Telomeres, Telomerase, and Senescence (7 papers), Cancer Research and Treatments (5 papers) and Gastrointestinal disorders and treatments (4 papers). Hideaki Niiyama collaborates with scholars based in Japan, United States and Papua New Guinea. Hideaki Niiyama's co-authors include Sergey V. Kantsevoy, Anthony N. Kalloo, Sanjay Jagannath, Carolyn Magee, Cheryl A. Vaughn, Susan L. Hill, Vikesh K. Singh, Masao Tanaka, Kazuhiro Mizumoto and Masahiro Kusumoto and has published in prestigious journals such as Gastroenterology, Cancer and FEBS Letters.

In The Last Decade

Hideaki Niiyama

23 papers receiving 1.9k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Flexible transgastric peritoneoscopy: a novel approach to diagnostic and therapeutic interventions in the peritoneal cavity

2004 982 citations Anthony N. Kalloo, Vikesh K. Singh et al. Gastrointestinal Endoscopy profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Hideaki Niiyama Japan	15	1.5k	864	529	425	246	25	1.9k
Wenxian Guan China	20	287 0.2×	478 0.6×	164 0.3×	224 0.5×	352 1.4×	49	1.2k
Koji Sasajima Japan	21	659 0.4×	498 0.6×	133 0.3×	308 0.7×	215 0.9×	81	1.3k
Ken‐ichi Mafune Japan	24	752 0.5×	539 0.6×	354 0.7×	266 0.6×	288 1.2×	81	1.4k
Zhining Fan China	19	816 0.6×	728 0.8×	147 0.3×	448 1.1×	281 1.1×	93	1.3k
Jingyu Deng China	26	645 0.4×	1.0k 1.2×	339 0.6×	365 0.9×	710 2.9×	140	2.1k
Toshiyasu Ojima Japan	25	939 0.6×	1.1k 1.3×	498 0.9×	563 1.3×	272 1.1×	131	2.0k
Bin Bai China	19	347 0.2×	381 0.4×	163 0.3×	180 0.4×	240 1.0×	56	1.1k
Sylvain Kirzin France	18	560 0.4×	244 0.3×	85 0.2×	699 1.6×	218 0.9×	41	1.2k
Hirochika Makino Japan	25	725 0.5×	1.0k 1.2×	494 0.9×	234 0.6×	263 1.1×	80	1.6k
Masao Tanaka Japan	10	725 0.5×	430 0.5×	129 0.2×	514 1.2×	223 0.9×	11	1.3k

Countries citing papers authored by Hideaki Niiyama

Since Specialization

Citations

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

Fields of papers citing papers by Hideaki Niiyama

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Hideaki Niiyama

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

Kantsevoy, Sergey V., Sanjay Jagannath, Hideaki Niiyama, et al.. (2007). A novel safe approach to the peritoneal cavity for per-oral transgastric endoscopic procedures. Gastrointestinal Endoscopy. 65(3). 497–500. 63 indexed citations

Kantsevoy, Sergey V., Hideaki Niiyama, Sanjay Jagannath, et al.. (2006). The endoscopic transilluminator: an endoscopic device for identification of the proximal jejunum for transgastric endoscopic gastrojejunostomy. Gastrointestinal Endoscopy. 63(7). 1055–1058. 22 indexed citations

Kantsevoy, Sergey V., Sanjay Jagannath, Hideaki Niiyama, et al.. (2005). Endoscopic gastrojejunostomy with survival in a porcine model. Gastrointestinal Endoscopy. 62(2). 287–292. 310 indexed citations

Kalloo, Anthony N., Vikesh K. Singh, Sanjay Jagannath, et al.. (2004). Flexible transgastric peritoneoscopy: a novel approach to diagnostic and therapeutic interventions in the peritoneal cavity. Gastrointestinal Endoscopy. 60(1). 114–117. 982 indexed citations breakdown →

Niiyama, Hideaki, Sanjay Jagannath, Sergey V. Kantsevoy, et al.. (2003). Intrasphincteric Nitric Oxide Reduces Sphincter of Oddi Motility in an Endoscopic Porcine Model. Digestive Diseases and Sciences. 48(11). 2187–2190. 7 indexed citations

Abe, Tomoya, Hideaki Niiyama, & Takeo Sasahara. (2002). Cloning of cDNA for UDP-glucose pyrophosphorylase and the expression of mRNA in rice endosperm. Theoretical and Applied Genetics. 105(2). 216–221. 28 indexed citations

Ogawa, Yoshiaki, et al.. (2001). Possible Role of Telomerase Activation in The Multistep Tumor Progression of Periampullary Lesions in Patients With Familial Adenomatous Polyposis. The American Journal of Gastroenterology. 96(4). 1261–1265. 6 indexed citations

Niiyama, Hideaki, Norihiro Sato, Ryuichi Mibu, et al.. (2001). Quantitative analysis of hTERT mRNA expression in colorectal cancer. The American Journal of Gastroenterology. 96(6). 1895–1900. 35 indexed citations

Ohtsuka, Takao, Ken Inoue, Jiro Ohuchida, et al.. (2001). Carcinoma Arising in Choledochocele. Endoscopy. 33(7). 614–619. 55 indexed citations

10.

Mizumoto, Kazuhiro, Norihiro Sato, Masahiro Kusumoto, et al.. (2000). Diverse effects of 9-hydroxyellipticine on the chemosensitivity of human pancreatic cancer cells harboring p53 mutations. Cancer Letters. 149(1-2). 85–94. 4 indexed citations

11.

Sato, Norihiro, Kazuhiro Mizumoto, Masafumi Nakamura, et al.. (1999). Centrosome abnormalities in pancreatic ductal carcinoma.. PubMed. 5(5). 963–70. 101 indexed citations

12.

Zhang, Li, Kazuhiro Mizumoto, Norihiro Sato, et al.. (1999). Quantitative determination of apoptotic death in cultured human pancreatic cancer cells by propidium iodide and digitonin. Cancer Letters. 142(2). 129–137. 75 indexed citations

13.

Mizumoto, Kazuhiro, Takahiro Ogawa, Eisuke Koike, et al.. (1999). Stricture of the Main Pancreatic Duct Due to Focal Pancreatitis Coexistent with Pancreatic Cystadenoma. Pancreas. 19(2). 211–213. 1 indexed citations

14.

Niiyama, Hideaki, Kazuhiro Mizumoto, Masahiro Kusumoto, et al.. (1999). Activation of telomerase and its diagnostic application in biopsy specimens from biliary tract neoplasms. Cancer. 85(10). 2138–2143. 24 indexed citations

15.

Mizumoto, Kazuhiro, Masahiro Kusumoto, Hideaki Niiyama, et al.. (1998). Telomerase activity detected in pancreatic juice 19 months before a tumor is detected in a patient with pancreatic cancer. The American Journal of Gastroenterology. 93(10). 1967–1971. 39 indexed citations

16.

Sato, Norihiro, Kazuhiro Mizumoto, Masahiro Kusumoto, et al.. (1998). 9‐Hydroxyellipticine inhibits telomerase activity in human pancreatic cancer cells. FEBS Letters. 441(2). 318–321. 22 indexed citations

17.

Tanaka, Minoru, Hideaki Niiyama, Kazunori Yokohata, et al.. (1997). Telomerase activity in pancreatic juice differentiates ductal carcinoma from adenoma and pancreatitis.. PubMed. 3(12 Pt 1). 2479–83. 63 indexed citations

18.

Niiyama, Hideaki, et al.. (1994). THYROID GLAND METASTASIS FROM RENAL CELL CARCINOMA MASQUERADING AS NODULAR GOITRE. Australian and New Zealand Journal of Surgery. 64(4). 286–288. 14 indexed citations

19.

Niiyama, Hideaki, et al.. (1994). Intersegmental connection with aberrant hepatic duct. Abdominal Imaging. 19(5). 425–426. 1 indexed citations

20.

Nishihara, Kazuyoshi, Masazumi Tsuneyoshi, Hideaki Niiyama, & Hitoshi Ichimiya. (1993). Composite glandular-endocrine cell carcinoma of the extrahepatic bile duct: Immunohistochemical study. Pathology. 25(1). 90–94. 23 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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