Masayasu Kojima

41.6k total citations · 10 hit papers
216 papers, 32.9k citations indexed

About

Masayasu Kojima is a scholar working on Endocrine and Autonomic Systems, Nutrition and Dietetics and Physiology. According to data from OpenAlex, Masayasu Kojima has authored 216 papers receiving a total of 32.9k indexed citations (citations by other indexed papers that have themselves been cited), including 158 papers in Endocrine and Autonomic Systems, 107 papers in Nutrition and Dietetics and 96 papers in Physiology. Recurrent topics in Masayasu Kojima's work include Regulation of Appetite and Obesity (149 papers), Biochemical Analysis and Sensing Techniques (105 papers) and Adipose Tissue and Metabolism (79 papers). Masayasu Kojima is often cited by papers focused on Regulation of Appetite and Obesity (149 papers), Biochemical Analysis and Sensing Techniques (105 papers) and Adipose Tissue and Metabolism (79 papers). Masayasu Kojima collaborates with scholars based in Japan, United States and Spain. Masayasu Kojima's co-authors include Kenji Kangawa, Hiroshi Hosoda, Hisayuki Matsuo, Yukari Date, Masamitsu Nakazato, Shigeru Matsukura, Noboru Murakami, Muhtashan S. Mondal, Masamitsu Nakazato and Kazuwa Nakao and has published in prestigious journals such as Nature, Journal of Biological Chemistry and Circulation.

In The Last Decade

Masayasu Kojima

211 papers receiving 32.0k citations

Hit Papers

Ghrelin is a growth-hormone-releasing acylated peptide fr... 1993 2026 2004 2015 1999 2001 2005 2000 2001 2.0k 4.0k 6.0k
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.

  1. Ghrelin is a growth-hormone-releasing acylated peptide from stomach
    1999 6.8k citations Masayasu Kojima, Hiroshi Hosoda et al. profile →
  2. A role for ghrelin in the central regulation of feeding
    2001 2.8k citations Masamitsu Nakazato, Noboru Murakami et al. profile →
  3. Ghrelin: Structure and Function
    2005 2.1k citations Masayasu Kojima, Kenji Kangawa profile →
  4. Ghrelin, a Novel Growth Hormone-Releasing Acylated Peptide, Is Synthesized in a Distinct Endocrine Cell Type in the Gastrointestinal Tracts of Rats and Humans1
    2000 1.5k citations Yukari Date, Masayasu Kojima et al. Endocrinology profile →
  5. Stomach Is a Major Source of Circulating Ghrelin, and Feeding State Determines Plasma Ghrelin-Like Immunoreactivity Levels in Humans
    2001 1.0k citations Hiroshi Hosoda, Masayasu Kojima et al. The Journal of Clinical Endocrinology & Metabolism profile →
  6. Ghrelin and Des-acyl Ghrelin: Two Major Forms of Rat Ghrelin Peptide in Gastrointestinal Tissue
    2000 770 citations Hiroshi Hosoda, Masayasu Kojima et al. Biochemical and Biophysical Research Communications profile →
  7. Ghrelin Stimulates Gastric Acid Secretion and Motility in Rats
    2000 733 citations Yutaka Masuda, Norio Inomata et al. Biochemical and Biophysical Research Communications profile →
  8. Ghrelin, an Endogenous Growth Hormone Secretagogue, Is a Novel Orexigenic Peptide That Antagonizes Leptin Action Through the Activation of Hypothalamic Neuropeptide Y/Y1 Receptor Pathway
    2001 690 citations Masayasu Kojima, Kenji Kangawa et al. profile →
  9. Cloning and Characterization of cDNA Encoding a Precursor for Human Adrenomedullin
    1993 529 citations Junichiro Sakata, Kenji Kangawa et al. Biochemical and Biophysical Research Communications profile →
  10. Upregulation of Ghrelin Expression in the Stomach upon Fasting, Insulin-Induced Hypoglycemia, and Leptin Administration
    2001 529 citations Muhtashan S. Mondal, Masamitsu Nakazato et al. Biochemical and Biophysical Research Communications profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Masayasu Kojima Japan 72 24.9k 16.4k 16.0k 4.3k 3.8k 216 32.9k
Masamitsu Nakazato Japan 66 20.5k 0.8× 10.8k 0.7× 10.9k 0.7× 3.3k 0.7× 3.3k 0.9× 291 28.2k
Stephen C. Woods United States 106 23.2k 0.9× 11.1k 0.7× 16.9k 1.1× 5.9k 1.4× 6.4k 1.7× 455 41.3k
Randy J. Seeley United States 97 20.3k 0.8× 10.4k 0.6× 16.6k 1.0× 6.7k 1.5× 7.4k 1.9× 413 37.9k
Michael W. Schwartz United States 111 27.5k 1.1× 13.6k 0.8× 19.1k 1.2× 5.1k 1.2× 5.6k 1.5× 291 45.7k
Matthias H. Tschöp United States 88 17.5k 0.7× 10.1k 0.6× 15.8k 1.0× 6.5k 1.5× 4.5k 1.2× 303 33.6k
Roger D. Cone United States 76 19.7k 0.8× 14.9k 0.9× 8.0k 0.5× 1.8k 0.4× 2.0k 0.5× 185 28.5k
Tamás L. Horváth United States 97 15.8k 0.6× 7.0k 0.4× 11.9k 0.7× 2.9k 0.7× 2.2k 0.6× 328 34.7k
Denis G. Baskin United States 61 13.5k 0.5× 6.4k 0.4× 7.7k 0.5× 2.3k 0.5× 2.5k 0.7× 117 20.1k
Bradford B. Lowell United States 106 18.9k 0.8× 9.7k 0.6× 24.2k 1.5× 2.9k 0.7× 4.6k 1.2× 200 50.5k
Rexford S. Ahima United States 80 13.9k 0.6× 6.2k 0.4× 13.8k 0.9× 3.9k 0.9× 2.7k 0.7× 238 32.2k

Countries citing papers authored by Masayasu Kojima

Since Specialization
Citations

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

Fields of papers citing papers by Masayasu Kojima

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Masayasu Kojima

This figure shows the co-authorship network connecting the top 25 collaborators of Masayasu Kojima. A scholar is included among the top collaborators of Masayasu Kojima 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 Masayasu Kojima. Masayasu Kojima 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.
Shiimura, Yuki, Dohyun Im, Hidetsugu Asada, et al.. (2025). The structure and function of the ghrelin receptor coding for drug actions. Nature Structural & Molecular Biology. 32(3). 531–542. 3 indexed citations
2.
Shiimura, Yuki, Masayasu Kojima, & Takahiro Sato. (2025). How the ghrelin receptor recognizes the acyl-modified orexigenic hormone. Frontiers in Molecular Neuroscience. 18. 1549366–1549366. 2 indexed citations
3.
Sano, Hiroko, Akira Nakamura, Mariko Yamane, et al.. (2022). The polyol pathway is an evolutionarily conserved system for sensing glucose uptake. PLoS Biology. 20(6). e3001678–e3001678. 17 indexed citations
4.
Pearson, James T., Kate N. Thomas, Hirotsugu Tsuchimochi, et al.. (2020). Dysregulation of ghrelin in diabetes impairs the vascular reparative response to hindlimb ischemia in a mouse model; clinical relevance to peripheral artery disease. Scientific Reports. 10(1). 13651–13651. 8 indexed citations
5.
Kojima, Masayasu, Akie Hamamoto, & Takahiro Sato. (2016). GhrelinO-acyltransferase (GOAT), a specific enzyme that modifies ghrelin with a medium-chain fatty acid. The Journal of Biochemistry. 160(4). 189–194. 25 indexed citations
6.
Nishi, Yoshihiro, Hiroharu Mifune, & Masayasu Kojima. (2012). Ghrelin Acylation by Ingestion of Medium-Chain Fatty Acids. Methods in enzymology on CD-ROM/Methods in enzymology. 514. 303–315. 17 indexed citations
7.
Nishi, Yoshihiro, Hiroshi Hosoda, Yuji Tajiri, et al.. (2011). Plasma levels of n-decanoyl ghrelin, another acyl- and active-form of ghrelin, in human subjects and the effect of glucose- or meal-ingestion on its dynamics. Regulatory Peptides. 167(1). 140–148. 16 indexed citations
8.
Sato, Takahiro, Yoshiki Nakashima, Yuki Nakamura, Takanori Ida, & Masayasu Kojima. (2010). Continuous Antagonism of the Ghrelin Receptor Results in Early Induction of Salt-Sensitive Hypertension. Journal of Molecular Neuroscience. 43(2). 193–199. 15 indexed citations
9.
García, Edwin, Peter H. King, Kally Sidhu, et al.. (2009). The role of ghrelin and ghrelin-receptor gene variants and promoter activity in type 2 diabetes. European Journal of Endocrinology. 161(2). 307–315. 29 indexed citations
10.
Sato, Takahiro, Hiromasa Inoue, Satoru Fukuyama, et al.. (2005). The neuropeptide neuromedin U promotes inflammation by direct activation of mast cells. The Journal of Experimental Medicine. 202(2). 217–224. 78 indexed citations
11.
Mori, Kenji, Mikiya Miyazato, Takanori Ida, et al.. (2005). Identification of neuromedin S and its possible role in the mammalian circadian oscillator system. The EMBO Journal. 24(2). 325–335. 141 indexed citations
12.
Nishi, Yoshihiro, Hiroshi Hiejima, Hiroshi Hosoda, et al.. (2005). Ingested Medium-Chain Fatty Acids Are Directly Utilized for the Acyl Modification of Ghrelin. Endocrinology. 146(5). 2255–2264. 206 indexed citations
13.
Kojima, Masayasu. (2004). Serum cholesterol lowering action of the rat by the azuki bean polyphenol. 76. 895. 1 indexed citations
14.
HASHIZUME, Tsutomu, et al.. (2003). Effects of Ghrelin on growth hormone secretion from cultured adenohypophysial cells in pigs. Domestic Animal Endocrinology. 24(3). 209–218. 32 indexed citations
15.
Tanaka, Keisuke, Hiroyuki Minoura, Toshimichi Yoshida, et al.. (2003). Ghrelin Is Involved in the Decidualization of Human Endometrial Stromal Cells. The Journal of Clinical Endocrinology & Metabolism. 88(5). 2335–2340. 61 indexed citations
16.
Murakami, N., Takahiro Hayashida, Kou Nakahara, et al.. (2002). Role for central ghrelin in food intake and secretion profile of stomach ghrelin in rats. Journal of Endocrinology. 174(2). 283–288. 207 indexed citations
17.
Matsumoto, Masaru, Yasuo Kitajima, Yujiro Hayashi, et al.. (2001). Structural Similarity of Ghrelin Derivatives to Peptidyl Growth Hormone Secretagogues. Biochemical and Biophysical Research Communications. 284(3). 655–659. 45 indexed citations
18.
Date, Yukari, Masayasu Kojima, Hiroshi Hosoda, et al.. (2000). Ghrelin, a Novel Growth Hormone-Releasing Acylated Peptide, Is Synthesized in a Distinct Endocrine Cell Type in the Gastrointestinal Tracts of Rats and Humans1. Endocrinology. 141(11). 4255–4261. 1459 indexed citations breakdown →
19.
Masuda, Yutaka, Norio Inomata, Norio Ohnuma, et al.. (2000). Ghrelin Stimulates Gastric Acid Secretion and Motility in Rats. Biochemical and Biophysical Research Communications. 276(3). 905–908. 733 indexed citations breakdown →
20.
Mizuno, Kensaku, Junichiro Sakata, Masayasu Kojima, Kenji Kangawa, & Hisayuki Matsuo. (1986). Peptide C-terminal α-amidating enzyme purified to homogeneity from Xenopuslaevis skin. Biochemical and Biophysical Research Communications. 137(3). 984–991. 68 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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