Hiroaki Okamura

8.2k total citations · 3 hit papers
197 papers, 6.8k citations indexed

About

Hiroaki Okamura is a scholar working on Molecular Biology, Organic Chemistry and Reproductive Medicine. According to data from OpenAlex, Hiroaki Okamura has authored 197 papers receiving a total of 6.8k indexed citations (citations by other indexed papers that have themselves been cited), including 74 papers in Molecular Biology, 49 papers in Organic Chemistry and 49 papers in Reproductive Medicine. Recurrent topics in Hiroaki Okamura's work include Hypothalamic control of reproductive hormones (46 papers), Marine Sponges and Natural Products (30 papers) and Phytochemical compounds biological activities (30 papers). Hiroaki Okamura is often cited by papers focused on Hypothalamic control of reproductive hormones (46 papers), Marine Sponges and Natural Products (30 papers) and Phytochemical compounds biological activities (30 papers). Hiroaki Okamura collaborates with scholars based in Japan, Canada and United States. Hiroaki Okamura's co-authors include Tetsuo Iwagawa, Munehiro Nakatani, Carsten Bolm, Yoshihiro Wakabayashi, Satoshi Ohkura, Robert A. Steiner, Víctor M. Navarro, Donald K. Clifton, Makoto Yokosuka and Hiroko Tsukamura and has published in prestigious journals such as Cell, Proceedings of the National Academy of Sciences and Journal of Biological Chemistry.

In The Last Decade

Hiroaki Okamura

195 papers receiving 6.6k 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.

Regulation of Gonadotropin-Releasing Hormone Secretion by Kisspeptin/Dynorphin/Neurokinin B Neurons in the Arcuate Nucleus of the Mouse

2009 609 citations Víctor M. Navarro, Hiroaki Okamura et al. Journal of Neuroscience profile →
Cloning and expression of the rat prolactin receptor, a member of the growth hormone/prolactin receptor gene family

1988 489 citations Jean‐Marie Boutin, Christine Jolicoeur et al. profile →
Neurokinin B and Dynorphin A in Kisspeptin Neurons of the Arcuate Nucleus Participate in Generation of Periodic Oscillation of Neural Activity Driving Pulsatile Gonadotropin-Releasing Hormone Secretion in the Goat

2010 470 citations Yoshihiro Wakabayashi, Tomoaki Nakada et al. Journal of Neuroscience profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Hiroaki Okamura Japan	41	2.6k	2.5k	1.2k	1.1k	794	197	6.8k
Gary P. O’Neill Canada	38	408 0.2×	2.0k 0.8×	546 0.4×	1.1k 1.0×	230 0.3×	80	6.1k
Mats Carlquist Sweden	33	750 0.3×	4.3k 1.7×	422 0.3×	2.8k 2.4×	1.1k 1.4×	76	8.4k
Patrízia Limonta Italy	41	1.1k 0.4×	2.0k 0.8×	109 0.1×	796 0.7×	638 0.8×	125	4.7k
Chizuko Yanaihara Japan	36	389 0.1×	2.1k 0.8×	542 0.4×	236 0.2×	589 0.7×	276	4.8k
Paul W. Sylvester United States	39	228 0.1×	1.8k 0.7×	902 0.7×	345 0.3×	228 0.3×	148	4.7k
Stefan Nilsson Sweden	34	1.0k 0.4×	4.0k 1.6×	325 0.3×	7.3k 6.4×	2.3k 2.9×	50	10.8k
Jean‐Pierre Raynaud France	46	1.1k 0.4×	1.8k 0.7×	252 0.2×	2.1k 1.8×	2.3k 2.9×	165	6.5k
Eva Enmark Sweden	24	2.1k 0.8×	5.1k 2.0×	309 0.3×	10.7k 9.5×	3.1k 3.8×	29	14.9k
Tommie W. Redding United States	40	1.5k 0.6×	1.6k 0.6×	163 0.1×	664 0.6×	1.8k 2.3×	128	5.5k
Susan P. Rohrer United States	27	246 0.1×	902 0.4×	606 0.5×	912 0.8×	498 0.6×	60	2.7k

Countries citing papers authored by Hiroaki Okamura

Since Specialization

Citations

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

Fields of papers citing papers by Hiroaki Okamura

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Hiroaki Okamura

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

Sudoh, Masayuki, Satoaki Onitsuka, Hiroaki Okamura, et al.. (2024). Sulfoquinovosyl diacylglycerol, a component of Holy Basil Ocimum tenuiflorum, inhibits the activity of the SARS-CoV-2 main protease and viral replication in vitro. Journal of Natural Medicines. 79(1). 122–133. 1 indexed citations

Sasaki, Takuya, Daisuke Ito, Yasuhiro Morita, et al.. (2019). Peripheral administration of κ-opioid receptor antagonist stimulates gonadotropin-releasing hormone pulse generator activity in ovariectomized, estrogen-treated female goats. Domestic Animal Endocrinology. 68. 83–91. 16 indexed citations

Hamada, Toshiyuki, et al.. (2017). Essential oil composition of citrus peels in Kikai-jima Island, Japan. 5(3). 12–15. 1 indexed citations

Murata, Ken T., Yoshihiro Wakabayashi, Hidenori Watanabe, et al.. (2014). Identification of an Olfactory Signal Molecule that Activates the Central Regulator of Reproduction in Goats. Current Biology. 24(6). 681–686. 39 indexed citations

Wakabayashi, Yoshihiro, et al.. (2012). Electrophysiological and Morphological Evidence for Synchronized GnRH Pulse Generator Activity Among Kisspeptin/Neurokinin B/Dynorphin A (KNDy) Neurons in Goats. Journal of Reproduction and Development. 59(1). 40–48. 65 indexed citations

Okamura, Hiroaki, Tetsuo Iwagawa, & Toshiyuki Hamada. (2012). Development of Catalytic Diels-Alder Reactions Based on Diene Activation Methodology, and Their Synthetic Applications for Biologically Active Cyclohexeneoxides and Carbasugars. Journal of Synthetic Organic Chemistry Japan. 70(3). 227–239. 2 indexed citations

Leonard, Kwati, et al.. (2010). One-pot sonochemical synthesis of dendron-stabilized gold nanoparticles as promising nano-hybrid with potential impact in biological application. Materials Letters. 64(20). 2240–2243. 6 indexed citations

Wakabayashi, Yoshihiro, Tomoaki Nakada, Ken T. Murata, et al.. (2010). Neurokinin B and Dynorphin A in Kisspeptin Neurons of the Arcuate Nucleus Participate in Generation of Periodic Oscillation of Neural Activity Driving Pulsatile Gonadotropin-Releasing Hormone Secretion in the Goat. Journal of Neuroscience. 30(8). 3124–3132. 470 indexed citations breakdown →

KOMATSU, Masanori, Yoichi Sato, Hiroaki Okamura, et al.. (2010). Nucleotide polymorphisms and the 5′‐UTR transcriptional analysis of the bovine growth hormone secretagogue receptor 1a (GHSR1a) gene. Animal Science Journal. 81(5). 530–550. 10 indexed citations

10.

Murata, Koshi, Yoshihiro Wakabayashi, Hiromi Ohara, et al.. (2009). Modulation of Gonadotrophin‐Releasing Hormone Pulse Generator Activity by the Pheromone in Small Ruminants. Journal of Neuroendocrinology. 21(4). 346–350. 15 indexed citations

11.

Ohkura, Satoshi, Shuichi Matsuyama, Kazutaka Mogi, et al.. (2009). Gonadotrophin‐Releasing Hormone Pulse Generator Activity in the Hypothalamus of the Goat. Journal of Neuroendocrinology. 21(10). 813–821. 170 indexed citations

12.

Iwagawa, Tetsuo, et al.. (2008). Limonoids from the stem bark of Cedrela odorata. Phytochemistry. 69(8). 1782–1787. 42 indexed citations

13.

Ichimaru, Toru, Kazutaka Mogi, Satoshi Ohkura, Y. Mori, & Hiroaki Okamura. (2007). Exposure to ram wool stimulates gonadotropin-releasing hormone pulse generator activity in the female goat. Animal Reproduction Science. 106(3-4). 361–368. 16 indexed citations

14.

Momozawa, Yukihide, Yukari Takeuchi, Koji Masuda, et al.. (2007). Gene Expression Profiles Linked to the Hormonal Induction of Male-Effect Pheromone Synthesis in Goats (Capra hircus)1. Biology of Reproduction. 77(1). 102–107. 10 indexed citations

15.

Takigami, Shu, Yoshihiro Wakabayashi, Shunji Ohsako, et al.. (2004). Fetal development of vomeronasal system in the goat. Developmental Brain Research. 149(2). 113–120. 12 indexed citations

16.

Iwagawa, Tetsuo, et al.. (1994). Novel cembranoids with a 13-membered carbocyclic skeleton from a soft coral, sarcophyton species. Tetrahedron Letters. 35(45). 8415–8416. 4 indexed citations

17.

Sato, Tomomi, et al.. (1992). Estrogen receptor expression in the genital tract of female mice treated neonatally with diethylstilbestrol.. PubMed. 6(2). 151–6. 34 indexed citations

18.

Okamura, Hiroaki, Kazuhisa Yamamoto, Saeko Hayashi, Ataru Kuroiwa, & Masayasu Muramatsu. (1992). A polyclonal antibody to the rat oestrogen receptor expressed in Escherichia coli: characterization and application to immunohistochemistry. Journal of Endocrinology. 135(2). 333–NP. 64 indexed citations

19.

Jeandel, Lydie, Hiroaki Okamura, Marthe Belles‐Isles, et al.. (1989). Immunocytochemical localization, binding, and effects of atrial natriuretic peptide in rat adipocytes. Molecular and Cellular Endocrinology. 62(1). 69–78. 28 indexed citations

20.

Kelly, Paul A., Jean‐Marie Boutin, Christine Jolicoeur, et al.. (1989). Purification, Cloning, and Expression of the Prolactin Receptor1. Biology of Reproduction. 40(1). 27–32. 26 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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