Hiroki Koizumi

1.1k total citations
47 papers, 887 citations indexed

About

Hiroki Koizumi is a scholar working on Cellular and Molecular Neuroscience, Molecular Biology and Otorhinolaryngology. According to data from OpenAlex, Hiroki Koizumi has authored 47 papers receiving a total of 887 indexed citations (citations by other indexed papers that have themselves been cited), including 11 papers in Cellular and Molecular Neuroscience, 9 papers in Molecular Biology and 9 papers in Otorhinolaryngology. Recurrent topics in Hiroki Koizumi's work include Ear Surgery and Otitis Media (7 papers), Nerve injury and regeneration (6 papers) and Eating Disorders and Behaviors (6 papers). Hiroki Koizumi is often cited by papers focused on Ear Surgery and Otitis Media (7 papers), Nerve injury and regeneration (6 papers) and Eating Disorders and Behaviors (6 papers). Hiroki Koizumi collaborates with scholars based in Japan and Vietnam. Hiroki Koizumi's co-authors include Kenji Hashimoto, Masaomi Iyo, Eiji Shimizu, Michiko Nakazato, Naoe Okamura, Hideaki Suzuki, Chikara Kumakiri, Naoya Komatsu, Toyoaki Ohbuchi and Kaori Koike and has published in prestigious journals such as Biological Psychiatry, Brain Research and European Journal of Neuroscience.

In The Last Decade

Hiroki Koizumi

44 papers receiving 864 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Hiroki Koizumi Japan 17 287 221 173 144 115 47 887
Daniel Paredes United States 16 513 1.8× 196 0.9× 182 1.1× 359 2.5× 171 1.5× 32 1.2k
Sara B. Glickstein United States 25 489 1.7× 83 0.4× 194 1.1× 555 3.9× 144 1.3× 37 1.7k
Kuriko Kagitani‐Shimono Japan 24 126 0.4× 94 0.4× 511 3.0× 270 1.9× 327 2.8× 69 1.5k
Linda Scoriels United Kingdom 14 219 0.8× 85 0.4× 254 1.5× 182 1.3× 55 0.5× 36 936
Salman Zubedat Israel 14 222 0.8× 59 0.3× 74 0.4× 218 1.5× 82 0.7× 27 747
Ralf Kuehn Germany 5 345 1.2× 85 0.4× 143 0.8× 248 1.7× 143 1.2× 5 819
Emine Eren‐Koçak Türkiye 11 107 0.4× 53 0.2× 71 0.4× 183 1.3× 131 1.1× 21 756
Idil Çavuş United States 15 489 1.7× 62 0.3× 321 1.9× 176 1.2× 92 0.8× 20 1.2k
Shane W. Rau United States 17 437 1.5× 84 0.4× 88 0.5× 473 3.3× 129 1.1× 23 2.5k
Caroline Wass Sweden 19 315 1.1× 52 0.2× 141 0.8× 222 1.5× 151 1.3× 32 796

Countries citing papers authored by Hiroki Koizumi

Since Specialization
Citations

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

Fields of papers citing papers by Hiroki Koizumi

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Hiroki Koizumi

This figure shows the co-authorship network connecting the top 25 collaborators of Hiroki Koizumi. A scholar is included among the top collaborators of Hiroki Koizumi 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 Hiroki Koizumi. Hiroki Koizumi 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.
Suzuki, Hideaki, Hiroki Koizumi, Toyoaki Ohbuchi, et al.. (2017). Hearing Outcomes in Patients with Cholesteatomatous Otitis Media Complicated by Labyrinthine Fistula. Practica Oto-Rhino-Laryngologica. 110(11). 727–732.
2.
Koizumi, Hiroki, et al.. (2016). A Study on Nasopharyngeal Cancer. Practica Oto-Rhino-Laryngologica. 109(7). 501–506.
3.
Ohkubo, Jun‐ichi, et al.. (2016). Treatment outcome of ion beam therapy in eight patients with head and neck cancers. European Archives of Oto-Rhino-Laryngology. 273(12). 4397–4402. 5 indexed citations
4.
Takeuchi, Shoko, et al.. (2014). Relationship between sleep apnea and thyroid function. Sleep And Breathing. 19(1). 85–89. 34 indexed citations
5.
Koizumi, Hiroki, Hideaki Suzuki, Toyoaki Ohbuchi, et al.. (2014). Increased permeability of the epithelium of middle ear cholesteatoma. Clinical Otolaryngology. 40(2). 106–114. 13 indexed citations
6.
Suzuki, Hideaki, Takahisa Tabata, Hiroki Koizumi, et al.. (2014). Prediction of Hearing Outcomes by Multiple Regression Analysis in Patients With Idiopathic Sudden Sensorineural Hearing Loss. Annals of Otology Rhinology & Laryngology. 123(12). 821–825. 29 indexed citations
7.
Ohbuchi, Toyoaki, Jun‐ichi Ohkubo, Koichi Hashida, et al.. (2013). Identification of Pannexins in Rat Nasal Mucosa. Allergy & Rhinology. 4(2). 63–65. 5 indexed citations
8.
Katoh, Akiko, et al.. (2012). Three Cases of Intraparotid Facial Nerve Schwannoma. Practica Oto-Rhino-Laryngologica. 105(11). 1059–1063. 1 indexed citations
9.
Wakasugi, Tetsuro, Gunji Nagatani, Jun‐ichi Ohkubo, et al.. (2012). A Case of Primary Hyperparathyroidism with Brown Tumor of the Maxilla. Practica Oto-Rhino-Laryngologica. 105(10). 973–980.
10.
Koizumi, Hiroki, Toyoaki Ohbuchi, Gunji Nagatani, et al.. (2012). A Clinical Study of 64 Cases of Acute Epiglottitis. Practica Oto-Rhino-Laryngologica. 105(11). 1079–1083. 1 indexed citations
11.
Suzuki, Hideaki, et al.. (2012). Efficacy of intratympanic steroid administration on idiopathic sudden sensorineural hearing loss in comparison with hyperbaric oxygen therapy. The Laryngoscope. 122(5). 1154–1157. 31 indexed citations
12.
Nagatani, Gunji, Hideaki Suzuki, Takanori Mori, et al.. (2010). Clinical Parotid Carcinoma Analysis. Practica Oto-Rhino-Laryngologica. 103(4). 349–356. 2 indexed citations
13.
Koizumi, Hiroki, Kenji Hashimoto, & Masaomi Iyo. (2006). Dietary restriction changes behaviours in brain‐derived neurotrophic factor heterozygous mice: role of serotonergic system. European Journal of Neuroscience. 24(8). 2335–2344. 31 indexed citations
14.
Shimizu, Eiji, Kenji Hashimoto, Shintaro Ohgake, et al.. (2005). Association between angiotensin I-converting enzyme insertion/deletion gene functional polymorphism and novelty seeking personality in healthy females. Progress in Neuro-Psychopharmacology and Biological Psychiatry. 30(1). 99–103. 10 indexed citations
15.
Koike, Kazuhiko, Kenji Hashimoto, Goro Fukami, et al.. (2005). The immunophilin ligand FK506 protects against methamphetamine-induced dopaminergic neurotoxicity in mouse striatum. Neuropharmacology. 48(3). 391–397. 17 indexed citations
16.
Shimizu, Eiji, Kenji Hashimoto, Hiroki Koizumi, et al.. (2005). No association of the brain-derived neurotrophic factor (BDNF) gene polymorphisms with panic disorder. Progress in Neuro-Psychopharmacology and Biological Psychiatry. 29(5). 708–712. 35 indexed citations
17.
Hashimoto, Kenji, Takeshi Fukushima, Eiji Shimizu, et al.. (2003). Possible role of d-serine in the pathophysiology of Alzheimer's disease. Progress in Neuro-Psychopharmacology and Biological Psychiatry. 28(2). 385–388. 95 indexed citations
18.
Koizumi, Hiroki, Kenji Hashimoto, Chikara Kumakiri, et al.. (2003). Association between the glutathione S‐transferase M1 gene deletion and female methamphetamine abusers. American Journal of Medical Genetics Part B Neuropsychiatric Genetics. 126B(1). 43–45. 26 indexed citations
19.
Nakazato, Michiko, Kenji Hashimoto, Eiji Shimizu, et al.. (2003). Decreased levels of serum brain-derived neurotrophic factor in female patients with eating disorders. Biological Psychiatry. 54(4). 485–490. 129 indexed citations
20.
Koizumi, Hiroki, et al.. (1992). Effects of novel synthesized retinobenzoic acid (Am-80) on adenylate cyclase and arachidonic acid release in pig epidermis. Journal of Dermatological Science. 3(2). 97–102. 2 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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