2026 Masayasu Kojima: Medicine Researcher – H-Index, Publications & Awards

Discipline name	D-Index	World Ranking	Current World Ranking	National Ranking	Current National Ranking	Publications	Citations
Medicine	96	9454	8871	254	241	264	65332

Overview

Masayasu Kojima is affiliated with Kurume University in Japan. The research mainly spans the fields of Neuroscience and Medicine, with a focus on subfields such as Endocrine and Autonomic Systems, Physiology, Nutrition and Dietetics, Cellular and Molecular Neuroscience, and Molecular Biology.

The scientist's research topics encompass:

Regulation of Appetite and Obesity
Biochemical Analysis and Sensing Techniques
Adipose Tissue and Metabolism
Diet, Metabolism, and Disease
Lipid Metabolism and Biosynthesis
Neuropeptides and Animal Physiology
Receptor Mechanisms and Signaling

Recent publications include key studies such as:

"Structure of an antagonist-bound ghrelin receptor reveals possible ghrelin recognition mode," 2020, Nature Communications
"The polyol pathway is an evolutionarily conserved system for sensing glucose uptake," 2022, PLoS Biology
"Insights Into the Regulation of Offspring Growth by Maternally Derived Ghrelin," 2022, Frontiers in Endocrinology
"Thermoregulatory role of ghrelin in the induction of torpor under a restricted feeding condition," 2021, Scientific Reports
"Dysregulation of ghrelin in diabetes impairs the vascular reparative response to hindlimb ischemia in a mouse model; clinical relevance to peripheral artery disease," 2020, Scientific Reports

The most frequent publication venues for Kojima's work include:

Frontiers in Endocrinology (4 publications)
Scientific Reports (3 publications)
bioRxiv (Cold Spring Harbor Laboratory) (2 publications)
Nature Communications (1 publication)
PLoS Biology (1 publication)

Kojima collaborates regularly with several researchers, including:

Takahiro Sato (9 coauthored papers)
Yuki Shiimura (6 coauthored papers)
Takanori Ida (5 coauthored papers)
Hiroko Sano (3 coauthored papers)
Akira Nakamura (3 coauthored papers)

Best Publications

Ghrelin is a growth-hormone-releasing acylated peptide from stomach.

Masayasu Kojima;Hiroshi Hosoda;Yukari Date;Masamitsu Nakazato

12467
Citations
A role for ghrelin in the central regulation of feeding.

Masamitsu Nakazato;Noboru Murakami;Yukari Date;Masayasu Kojima

4681
Citations
Ghrelin: Structure and Function

Masayasu Kojima;Kenji Kangawa

2669
Citations
Ghrelin, a novel growth hormone-releasing acylated peptide, is synthesized in a distinct endocrine cell type in the gastrointestinal tracts of rats and humans.

Yukari Date;Masayasu Kojima;Hiroshi Hosoda;Akira Sawaguchi

2430
Citations
Upregulation of Ghrelin expression in the stomach upon fasting, insulin-induced hypoglycemia, and leptin administration.

Koji Toshinai;Muhtashan S. Mondal;Masamitsu Nakazato;Yukari Date

2269
Citations
Primary structure of the receptor for calcium channel blockers from skeletal muscle

Tsutomu Tanabe;Hiroshi Takeshima;Atsushi Mikami;Veit Flockerzi

1746
Citations
Stomach Is a Major Source of Circulating Ghrelin, and Feeding State Determines Plasma Ghrelin-Like Immunoreactivity Levels in Humans

Hiroyuki Ariyasu;Kazuhiko Takaya;Tetsuya Tagami;Yoshihiro Ogawa

1713
Citations
Ghrelin Strongly Stimulates Growth Hormone Release in Humans

Kazuhiko Takaya;Hiroyuki Ariyasu;Naotetsu Kanamoto;Hiroshi Iwakura

1526
Citations
Ghrelin and des-acyl ghrelin: two major forms of rat ghrelin peptide in gastrointestinal tissue.

Hiroshi Hosoda;Masayasu Kojima;Hisayuki Matsuo;Kenji Kangawa

1341
Citations
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

Mitsuyo Shintani;Yoshihiro Ogawa;Ken Ebihara;Megumi Aizawa-Abe

1270
Citations
Ghrelin stimulates gastric acid secretion and motility in rats.

Yutaka Masuda;Tsuguhiko Tanaka;Norio Inomata;Norio Ohnuma

1202
Citations
Cloning, sequencing and expression of complementary DNA encoding the muscarinic acetylcholine receptor

Tai Kubo;Kazuhiko Fukuda;Atsushi Mikami;Akito Maeda

1195
Citations
Cloning and characterization of cDNA encoding a precursor for human adrenomedullin.

K. Kitamura;J. Sakata;K. Kangawa;M. Kojima

901
Citations
Ghrelin is present in pancreatic α-cells of humans and rats and stimulates insulin secretion

Yukari Date;Masamitsu Nakazato;Suzuko Hashiguchi;Katsuya Dezaki

870
Citations
Hemodynamic and hormonal effects of human ghrelin in healthy volunteers

Noritoshi Nagaya;Masayasu Kojima;Masaaki Uematsu;Masakazu Yamagishi

857
Citations
Ghrelin, A New Gastrointestinal Endocrine Peptide that Stimulates Insulin Secretion: Enteric Distribution, Ontogeny, Influence of Endocrine, and Dietary Manipulations

Heung-Man Lee;Guiyun Wang;Ella W. Englander;Masayasu Kojima

768
Citations
Ghrelin: discovery of the natural endogenous ligand for the growth hormone secretagogue receptor

Masayasu Kojima;Hiroshi Hosoda;Hisayuki Matsuo;Kenji Kangawa

723
Citations
Chronic administration of ghrelin improves left ventricular dysfunction and attenuates development of cardiac cachexia in rats with heart failure

Noritoshi Nagaya;Masaaki Uematsu;Masayasu Kojima;Yoshihiko Ikeda

690
Citations
Weight loss increases circulating levels of ghrelin in human obesity.

Troels Krarup Hansen;Rolf Dall;Hiroshi Hosoda;Masayasu Kojima

681
Citations
Ghrelin, a novel placental-derived hormone.

O Gualillo;J Caminos;M Blanco;T Garcìa-Caballero

618
Citations

Frequent Co-Authors

Kenji Kangawa National Cerebral and Cardiovascular Center

Hiroshi Hosoda Shinshu University

Hisayuki Matsuo Osaka University

Masamitsu Nakazato University of Miyazaki

Kazuwa Nakao Kyoto University

Kensaku Mizuno Tohoku University

Noritoshi Nagaya National Archives and Records Administration

Kazuhiko Kume Nagoya City University

Kiminori Hosoda Kyoto University

Yoshihiro Ogawa Kyushu University

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