Noboru Okamura

4.6k total citations · 1 hit paper
142 papers, 3.8k citations indexed

About

Noboru Okamura is a scholar working on Molecular Biology, Oncology and Infectious Diseases. According to data from OpenAlex, Noboru Okamura has authored 142 papers receiving a total of 3.8k indexed citations (citations by other indexed papers that have themselves been cited), including 48 papers in Molecular Biology, 47 papers in Oncology and 20 papers in Infectious Diseases. Recurrent topics in Noboru Okamura's work include Drug Transport and Resistance Mechanisms (36 papers), Pharmacogenetics and Drug Metabolism (14 papers) and Pharmacological Effects and Toxicity Studies (14 papers). Noboru Okamura is often cited by papers focused on Drug Transport and Resistance Mechanisms (36 papers), Pharmacogenetics and Drug Metabolism (14 papers) and Pharmacological Effects and Toxicity Studies (14 papers). Noboru Okamura collaborates with scholars based in Japan, United States and New Zealand. Noboru Okamura's co-authors include Yusuke Tanigawara, Midori Hirai, Toshiyuki Sakaeda, Tohru Komano, Kazumitsu Ueda, Noriyuki Kioka, Katsuhiko Okumura, Tsutomu Nakamura, R Hori and Ryusuke Hori and has published in prestigious journals such as Journal of Biological Chemistry, SHILAP Revista de lepidopterología and PLoS ONE.

In The Last Decade

Noboru Okamura

140 papers receiving 3.6k 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.

Human P-glycoprotein transports cortisol, aldosterone, and dexamethasone, but not progesterone.

1992 578 citations Noboru Okamura, Midori Hirai et al. profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Noboru Okamura Japan	32	1.4k	1.0k	780	452	451	142	3.8k
Doug Stryke United States	22	1.0k 0.7×	1.2k 1.2×	435 0.6×	617 1.4×	211 0.5×	33	3.1k
Miyuki Kimura Japan	29	928 0.6×	465 0.5×	531 0.7×	439 1.0×	700 1.6×	88	2.7k
Pradeep K. Dudeja United States	51	1.3k 0.9×	4.4k 4.3×	346 0.4×	513 1.1×	246 0.5×	293	8.5k
Ravinder K. Gill United States	38	982 0.7×	2.2k 2.1×	224 0.3×	423 0.9×	195 0.4×	142	4.6k
Nicholas L. Simmons United Kingdom	33	979 0.7×	1.0k 1.0×	501 0.6×	143 0.3×	170 0.4×	63	2.9k
Johanna Weiß Germany	34	1.8k 1.2×	1.1k 1.0×	932 1.2×	1.1k 2.4×	807 1.8×	167	4.4k
Tohru Komano Japan	25	1.6k 1.1×	1.3k 1.3×	900 1.2×	295 0.7×	308 0.7×	135	3.2k
Jian Lin China	33	925 0.6×	915 0.9×	349 0.4×	461 1.0×	706 1.6×	137	3.0k
Waddah A. Alrefai United States	38	1.1k 0.7×	2.2k 2.1×	212 0.3×	331 0.7×	188 0.4×	149	4.7k
In‐Wha Kim South Korea	28	1.6k 1.1×	1.9k 1.9×	683 0.9×	442 1.0×	354 0.8×	90	4.4k

Countries citing papers authored by Noboru Okamura

Since Specialization

Citations

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

Fields of papers citing papers by Noboru Okamura

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Noboru Okamura

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

Okamura, Noboru, et al.. (2020). <p>Patients’ Attitudes, Awareness, and Opinions About Community Pharmacies in Japan: Next Steps for the Health Support Pharmacy System</p>. PubMed. Volume 9. 243–256. 4 indexed citations

Fujita, Megumi, Ai Hasegawa, Motohiro Yamamori, & Noboru Okamura. (2017). In vitro and in vivo cytotoxicity of troglitazone in pancreatic cancer. Journal of Experimental & Clinical Cancer Research. 36(1). 91–91. 26 indexed citations

Omatsu, H., Akiko Kuwahara, Motohiro Yamamori, et al.. (2013). TNF-α -857C>T Genotype is Predictive of Clinical Response after Treatment with Definitive 5-Fluorouracil/cisplatin-based Chemoradiotherapy in Japanese Patients with Esophageal Squamous Cell Carcinoma. International Journal of Medical Sciences. 10(12). 1755–1760. 6 indexed citations

Takemura, Keiji, et al.. (2011). Examination of Importance and Problems of Medication History Management in Emergency Hospitalization as Compared to Scheduled Hospitalization. Iryo Yakugaku (Japanese Journal of Pharmaceutical Health Care and Sciences). 37(1). 41–47.

Tomiyama, Naoki, et al.. (2009). Factors Influencing Peak Concentrations of Arbekacin in Patients. Iryo Yakugaku (Japanese Journal of Pharmaceutical Health Care and Sciences). 35(10). 701–705. 3 indexed citations

Horie, Rie, T. Sakamoto, Takayuki Nakagawa, et al.. (2009). Sustained delivery of lidocaine into the cochlea using poly lactic/glycolic acid microparticles. The Laryngoscope. 120(2). 377–383. 46 indexed citations

Yamasaki, Daisuke, Tsutomu Nakamura, Noboru Okamura, et al.. (2009). Effects of acid and lactone forms of 3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitors on the induction of MDR1 expression and function in LS180 cells. European Journal of Pharmaceutical Sciences. 37(2). 126–132. 33 indexed citations

Kumita, Wakako, Ryoichi Saito, Kenya Sato, et al.. (2009). Molecular characterizations of carbapenem and ciprofloxacin resistance in clinical isolates of Pseudomonas putida. Journal of Infection and Chemotherapy. 15(1). 6–12. 14 indexed citations

Yamamori, Motohiro, Shingo Maeda, Tsutomu Nakamura, et al.. (2008). VEGF T-1498C polymorphism, a predictive marker of differentiation of colorectal adenocarcinomas in Japanese. International Journal of Medical Sciences. 5(2). 80–86. 10 indexed citations

10.

Ioroi, Takeshi, et al.. (2008). Multicenter Trial on Hypersensitivity Reactions following Treatment with FOLFOX Regimens. Iryo Yakugaku (Japanese Journal of Pharmaceutical Health Care and Sciences). 34(10). 919–926. 3 indexed citations

11.

Nakamura, Tsutomu, Takeshi Ioroi, Toshiyuki Sakaeda, et al.. (2006). Serum cystatin C levels to predict serum concentration of digoxin in Japanese patients. International Journal of Medical Sciences. 3(3). 92–96. 8 indexed citations

12.

Markova, Svetlana, Tsutomu Nakamura, Toshiyuki Sakaeda, et al.. (2006). Genotype-dependent Down-regulation of Gene Expression and Function of MDR1 in Human Peripheral Blood Mononuclear Cells under Acute Inflammation. Drug Metabolism and Pharmacokinetics. 21(3). 194–200. 16 indexed citations

13.

Sakaeda, Toshiyuki, Noboru Okamura, Akinobu Gotoh, et al.. (2005). EGFR mRNA is Upregulated, but Somatic Mutations of the Gene are Hardly Found in Renal Cell Carcinoma in Japanese Patients. Pharmaceutical Research. 22(10). 1757–1761. 15 indexed citations

14.

Sakaeda, Toshiyuki, Tsutomu Nakamura, Yuka Moriya, et al.. (2004). MDR1, MRP1 and MRP2 genotypes and in vitro chemosensitivity in Japanese patients with colorectal adenocarcinomas.. PubMed. 50(5-6). 181–8. 12 indexed citations

15.

Osawa, Kayo, et al.. (2003). Significance of methicillin-resistant Staphylococcus aureus (MRSA) survey in a university teaching hospital. Journal of Infection and Chemotherapy. 9(2). 172–177. 20 indexed citations

16.

Murase, Toshiyuki, et al.. (2001). An outbreak of diarrhoea due to multiple antimicrobial-resistant Shiga toxin-producing Escherichia coli O26[ratio ]H11 in a nursery. Epidemiology and Infection. 127(2). 221–227. 38 indexed citations

17.

Tsukasaki, Hiroaki, et al.. (2000). Electrolyzed Strong Acidic Water as a New Harmless Disinfectant Agent and its Application to Dentistry. 20(2). 173–179. 5 indexed citations

18.

Fujii, Masatoshi, Noboru Okamura, Takero Mazaki, et al.. (1995). Preoperative and postoperative adjuvant chemotherapy for colorectal cancer - Results of 5-year survival using UFT. A pilot study. 30(3). 584–594. 3 indexed citations

19.

Okamura, Noboru. (1985). Virulence of Shigella: Epithelial cell invasiveness and other dysentery-producing factors.. Nippon Saikingaku Zasshi. 40(6). 875–882. 2 indexed citations

20.

NAKAYA, Rintaro, Noboru Okamura, Hidemasa Ogawa, & Y Osada. (1977). . Nippon Saikingaku Zasshi. 32(6). 785–804. 1 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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