Masayoshi Hayama

887 total citations
39 papers, 711 citations indexed

About

Masayoshi Hayama is a scholar working on Surgery, Molecular Biology and Immunology. According to data from OpenAlex, Masayoshi Hayama has authored 39 papers receiving a total of 711 indexed citations (citations by other indexed papers that have themselves been cited), including 20 papers in Surgery, 14 papers in Molecular Biology and 10 papers in Immunology. Recurrent topics in Masayoshi Hayama's work include Helicobacter pylori-related gastroenterology studies (13 papers), Galectins and Cancer Biology (7 papers) and Glycosylation and Glycoproteins Research (5 papers). Masayoshi Hayama is often cited by papers focused on Helicobacter pylori-related gastroenterology studies (13 papers), Galectins and Cancer Biology (7 papers) and Glycosylation and Glycoproteins Research (5 papers). Masayoshi Hayama collaborates with scholars based in Japan, Australia and United States. Masayoshi Hayama's co-authors include Hiroyoshi Ota, Kendo Kiyosawa, Shigeyuki Kawa, Hideaki Hamano, Akira Horiuchi, Masanobu Momose, Jun Nakayama, Osamu Nishizawa, Haruaki Kato and Masao Hotchi and has published in prestigious journals such as Gastroenterology, The Journal of Urology and Journal of Lipid Research.

In The Last Decade

Masayoshi Hayama

39 papers receiving 687 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Masayoshi Hayama Japan 16 405 230 173 172 106 39 711
Paul S. Seifert United States 16 217 0.5× 82 0.4× 205 1.2× 148 0.9× 65 0.6× 29 850
Jinxiong Wei United States 14 323 0.8× 104 0.5× 411 2.4× 59 0.3× 97 0.9× 17 825
T H Rand United States 14 201 0.5× 315 1.4× 124 0.7× 66 0.4× 123 1.2× 22 1.1k
Luc Chouinard Canada 15 146 0.4× 170 0.7× 252 1.5× 71 0.4× 27 0.3× 28 733
Nicholas Peake United Kingdom 14 92 0.2× 121 0.5× 162 0.9× 122 0.7× 74 0.7× 23 635
Celeste C. Elia Brazil 14 235 0.6× 55 0.2× 166 1.0× 142 0.8× 48 0.5× 25 885
Roland Carlsson Sweden 18 117 0.3× 115 0.5× 308 1.8× 163 0.9× 23 0.2× 35 1.0k
Jao W United States 13 117 0.3× 49 0.2× 91 0.5× 136 0.8× 77 0.7× 21 561
C S Lee Australia 9 144 0.4× 35 0.2× 164 0.9× 48 0.3× 112 1.1× 9 631
Efstratios Vakirlis Greece 18 70 0.2× 75 0.3× 84 0.5× 309 1.8× 79 0.7× 95 965

Countries citing papers authored by Masayoshi Hayama

Since Specialization
Citations

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

Fields of papers citing papers by Masayoshi Hayama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Masayoshi Hayama

This figure shows the co-authorship network connecting the top 25 collaborators of Masayoshi Hayama. A scholar is included among the top collaborators of Masayoshi Hayama 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 Masayoshi Hayama. Masayoshi Hayama 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.
Momose, Masanobu, Hiroyoshi Ota, & Masayoshi Hayama. (2011). Re‐evaluation of melanin bleaching using warm diluted hydrogen peroxide for histopathological analysis. Pathology International. 61(6). 345–350. 28 indexed citations
2.
Kato, Haruaki, et al.. (2005). Anatomical and histological studies of so‐called Müllerian duct cyst. International Journal of Urology. 12(5). 465–468. 17 indexed citations
3.
Kato, Haruaki, et al.. (2004). Large intestinal type‐urachal adenocarcinoma with focal expression of prostatic specific antigen. International Journal of Urology. 11(11). 1033–1035. 5 indexed citations
4.
Ehara, Takashi, et al.. (2004). Loss of calponin h1 in renal angiomyolipoma correlates with aggressive clinical behavior. Urology. 64(3). 468–473. 16 indexed citations
5.
Ehara, Takashi, Haruaki Kato, Masayoshi Hayama, et al.. (2004). Calponin h1 Expression in Renal Tumor Vessels: Correlations With Multiple Pathological Factors of Renal Cell Carcinoma. The Journal of Urology. 171(3). 1319–1323. 11 indexed citations
6.
Hayama, Masayoshi, Oi Harada, Fumiko Terasawa, et al.. (2003). Immunohistochemical localization of sodium–potassium ATPase in human normal stomach and gastric adenocarcinomas. Histochemistry and Cell Biology. 119(4). 317–322. 1 indexed citations
7.
Hayama, Masayoshi, Hiroyoshi Ota, Toshihiko Toki, et al.. (2002). Cell kinetic study of the endometrium by nonisotopic in situ hybridization for histone H3 messenger RNA and immunohistochemistry for Ki‐67 and for estrogen and progesterone receptors. The Anatomical Record. 266(4). 234–240. 11 indexed citations
8.
Horiuchi, Akira, Shigeyuki Kawa, Hideaki Hamano, et al.. (2002). ERCP features in 27 patients with autoimmune pancreatitis. Gastrointestinal Endoscopy. 55(4). 494–499. 163 indexed citations
9.
Horiuchi, Akira, Shigeyuki Kawa, Hideaki Hamano, et al.. (2002). ERCP features in 27 patients with autoimmune pancreatitis. Gastrointestinal Endoscopy. 55(4). 494–499. 62 indexed citations
10.
Kato, Haruaki, Masayoshi Hayama, Shinya Kobayashi, et al.. (2002). Are Neuroendocrine Cells Responsible for the Development of Benign Prostatic Hyperplasia?. European Urology. 42(2). 79–83. 7 indexed citations
11.
Hayama, Masayoshi, et al.. (2001). Prostatic adenocarcinoma with marked neuroendocrine differentiation. International Journal of Urology. 8(7). 412–415. 2 indexed citations
12.
Kato, H, et al.. (2001). Adenocarcinoma of female paraurethral duct showing neuroendocrine differentiation. Urology. 58(6). 1058–1058. 15 indexed citations
13.
Honda, Takayuki, Hiroyoshi Ota, K.I. Arai, et al.. (2001). Three-dimensional analysis of alveolar structure in usual interstitial pneumonia. Archiv für Pathologische Anatomie und Physiologie und für Klinische Medicin. 441(1). 47–52. 14 indexed citations
14.
Ota, Hiroyoshi, et al.. (2000). Helicobacter pylori infection produces expression of a secretory component in gastric mucous cells. Archiv für Pathologische Anatomie und Physiologie und für Klinische Medicin. 437(5). 514–520. 9 indexed citations
15.
Ikeno, Tatsuo, Fukuto Maruta, Masayoshi Hayama, et al.. (2000). Long‐term Helicobacter pylori colonization produces G cell hyperplasia and carcinoid tumor in Mongolian gerbils. Journal of Cellular and Molecular Medicine. 4(4). 308–309. 2 indexed citations
16.
Nakayama, Jun, Masanobu Momose, Masayoshi Hayama, et al.. (1998). Helicobacter pylori infection produces reversible glycosylation changes to gastric mucins. Archiv für Pathologische Anatomie und Physiologie und für Klinische Medicin. 433(5). 419–426. 76 indexed citations
17.
Nakamura, Toshitsugu, Masayoshi Hayama, Toshihiko Sakai, Masao Hotchi, & Eiji Tanaka. (1993). Proliferative activity of hepatocytes in chronic viral hepatitis as revealed by immunohistochemistry for proliferating cell nuclear antigen. Human Pathology. 24(7). 750–753. 26 indexed citations
18.
Kobayashi, Kazuo, Masayoshi Hayama, & Masao Hotchi. (1988). The application of immunoperoxidase staining for the detection of causative fungi in tissue specimens of mycosis I. Mycopathologia. 102(2). 107–113. 24 indexed citations
19.
Hayama, Masayoshi, Tsutomu Katsuyama, Jun Nakayama, Taiji Akamatsu, & Takayuki Honda. (1987). A Combined Stain for Identifying Epithelial Cells of the Gastric Mucosa. Stain Technology. 62(1). 35–40. 5 indexed citations
20.
Hayama, Masayoshi, Tsutomu Katsuyama, & Kenzo Ono. (1985). An Improved Method for Identifying 8-O-Acetyl-N-Acetylneuraminic Acid. Stain Technology. 60(4). 201–205. 6 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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