Olaf Schaefer

1.4k total citations · 1 hit paper
16 papers, 1.1k citations indexed

About

Olaf Schaefer is a scholar working on Oncology, Pharmacology and Molecular Biology. According to data from OpenAlex, Olaf Schaefer has authored 16 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 8 papers in Oncology, 8 papers in Pharmacology and 5 papers in Molecular Biology. Recurrent topics in Olaf Schaefer's work include Drug Transport and Resistance Mechanisms (6 papers), Pharmacological Effects and Toxicity Studies (5 papers) and Hops Chemistry and Applications (4 papers). Olaf Schaefer is often cited by papers focused on Drug Transport and Resistance Mechanisms (6 papers), Pharmacological Effects and Toxicity Studies (5 papers) and Hops Chemistry and Applications (4 papers). Olaf Schaefer collaborates with scholars based in Japan, Germany and United States. Olaf Schaefer's co-authors include Thomas Ebner, Wataru Kishimoto, Tae Inoue, Sumio Ohtsuki, Eva Ludwig-Schwellinger, Tetsuya Terasaki, Hirotaka Kawakami, M. Hümpel, Naoki Ishiguro and Asami Saito and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Journal of Biological Chemistry and Oncogene.

In The Last Decade

Olaf Schaefer

16 papers receiving 1.1k 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.

Simultaneous Absolute Protein Quantification of Transporters, Cytochromes P450, and UDP-Glucuronosyltransferases as a Novel Approach for the Characterization of Individual Human Liver: Comparison with mRNA Levels and Activities

2011 357 citations Sumio Ohtsuki, Olaf Schaefer et al. Drug Metabolism and Disposition profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Olaf Schaefer Japan	14	528	515	362	160	147	16	1.1k
Lesley A. Stanley United Kingdom	23	452 0.9×	367 0.7×	723 2.0×	66 0.4×	71 0.5×	41	1.7k
S. Cyrus Khojasteh United States	24	617 1.2×	609 1.2×	627 1.7×	98 0.6×	68 0.5×	94	1.6k
Wongwiwat Tassaneeyakul Thailand	16	570 1.1×	256 0.5×	157 0.4×	130 0.8×	80 0.5×	24	1.4k
Katsuyuki Fukuda Japan	24	492 0.9×	386 0.7×	354 1.0×	84 0.5×	57 0.4×	114	1.9k
Adrian J. Fretland United States	22	437 0.8×	376 0.7×	1.1k 3.2×	99 0.6×	49 0.3×	52	2.1k
Shangara S. Dehal United States	19	584 1.1×	275 0.5×	418 1.2×	149 0.9×	36 0.2×	27	1.5k
S.S. Thorgeirsson United States	21	581 1.1×	632 1.2×	810 2.2×	104 0.7×	57 0.4×	44	2.1k
Susan Wong United States	17	314 0.6×	248 0.5×	220 0.6×	98 0.6×	34 0.2×	39	833
Mitsukazu Kitada Japan	18	426 0.8×	276 0.5×	259 0.7×	115 0.7×	34 0.2×	61	939
Naomi Mizuno Japan	12	308 0.6×	577 1.1×	286 0.8×	252 1.6×	71 0.5×	16	1.1k

Countries citing papers authored by Olaf Schaefer

Since Specialization

Citations

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

Fields of papers citing papers by Olaf Schaefer

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Olaf Schaefer

This figure shows the co-authorship network connecting the top 25 collaborators of Olaf Schaefer. A scholar is included among the top collaborators of Olaf Schaefer 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 Olaf Schaefer. Olaf Schaefer is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

16 of 16 papers shown

Nakanishi, Takeo, Hisakazu Komori, Xinying Wang, et al.. (2017). Different Involvement of OAT in Renal Disposition of Oral Anticoagulants Rivaroxaban, Dabigatran, and Apixaban. Journal of Pharmaceutical Sciences. 106(9). 2524–2534. 9 indexed citations

Ishiguro, Naoki, et al.. (2013). Impact of Endogenous Esterase Activity on In Vitro P-Glycoprotein Profiling of Dabigatran Etexilate in Caco-2 Monolayers. Drug Metabolism and Disposition. 42(2). 250–256. 42 indexed citations

Kishimoto, Wataru, Naoki Ishiguro, Eva Ludwig-Schwellinger, Thomas Ebner, & Olaf Schaefer. (2013). In Vitro Predictability of Drug-Drug Interaction Likelihood of P-Glycoprotein-Mediated Efflux of Dabigatran Etexilate Based on [I]2/IC50 Threshold. Drug Metabolism and Disposition. 42(2). 257–263. 47 indexed citations

Ishiguro, Naoki, Hidetada Shimizu, Wataru Kishimoto, Thomas Ebner, & Olaf Schaefer. (2012). Evaluation and Prediction of Potential Drug-Drug Interactions of Linagliptin Using In Vitro Cell Culture Methods. Drug Metabolism and Disposition. 41(1). 149–158. 24 indexed citations

Ohtsuki, Sumio, Olaf Schaefer, Hirotaka Kawakami, et al.. (2011). Simultaneous Absolute Protein Quantification of Transporters, Cytochromes P450, and UDP-Glucuronosyltransferases as a Novel Approach for the Characterization of Individual Human Liver: Comparison with mRNA Levels and Activities. Drug Metabolism and Disposition. 40(1). 83–92. 357 indexed citations breakdown →

Sakamoto, Atsushi, Takehisa Matsumaru, Naoki Ishiguro, et al.. (2011). Reliability and Robustness of Simultaneous Absolute Quantification of Drug Transporters, Cytochrome P450 Enzymes, and Udp-Glucuronosyltransferases in Human Liver Tissue by Multiplexed MRM/Selected Reaction Monitoring Mode Tandem Mass Spectrometry with Nano-Liquid Chromatography. Journal of Pharmaceutical Sciences. 100(9). 4037–4043. 51 indexed citations

Schaefer, Olaf, Sumio Ohtsuki, Hirotaka Kawakami, et al.. (2011). Absolute Quantification and Differential Expression of Drug Transporters, Cytochrome P450 Enzymes, and UDP-Glucuronosyltransferases in Cultured Primary Human Hepatocytes. Drug Metabolism and Disposition. 40(1). 93–103. 115 indexed citations

Rad, Mohammad Navid Soltani, M. Hümpel, Olaf Schaefer, et al.. (2006). Pharmacokinetics and systemic endocrine effects of the phyto‐oestrogen 8‐prenylnaringenin after single oral doses to postmenopausal women. British Journal of Clinical Pharmacology. 62(3). 288–296. 77 indexed citations

Zhong, Minghao, Melissa A. Henriksen, Kenji Takeuchi, et al.. (2005). Implications of an antiparallel dimeric structure of nonphosphorylated STAT1 for the activation–inactivation cycle. Proceedings of the National Academy of Sciences. 102(11). 3966–3971. 126 indexed citations

10.

Hümpel, M., Olaf Schaefer, Ulrike Kaufmann, et al.. (2005). Tissue specificity of 8-prenylnaringenin: Protection from ovariectomy induced bone loss with minimal trophic effects on the uterus. The Journal of Steroid Biochemistry and Molecular Biology. 97(3). 299–305. 53 indexed citations

11.

Schaefer, Olaf, Rolf Bohlmann, Wolf‐Dieter Schleuning, Kai Schulze‐Forster, & M. Hümpel. (2005). Development of a Radioimmunoassay for the Quantitative Determination of 8-Prenylnaringenin in Biological Matrices. Journal of Agricultural and Food Chemistry. 53(8). 2881–2889. 40 indexed citations

12.

Schaefer, Olaf, M. Hümpel, Karl‐Heinrich Fritzemeier, Rolf Bohlmann, & Wolf‐Dieter Schleuning. (2003). 8-Prenyl naringenin is a potent ERα selective phytoestrogen present in hops and beer. The Journal of Steroid Biochemistry and Molecular Biology. 84(2-3). 359–360. 87 indexed citations

13.

Yang, Edward, Melissa A. Henriksen, Olaf Schaefer, Natalia Zakharova, & James Darnell. (2002). Dissociation Time from DNA Determines Transcriptional Function in a STAT1 Linker Mutant. Journal of Biological Chemistry. 277(16). 13455–13462. 64 indexed citations

14.

Kim, Jung-Sik, Farzaneh Pirnia, Yung Hyun Choi, et al.. (2000). Lovastatin induces apoptosis in a primitive neuroectodermal tumor cell line in association with RB down-regulation and loss of the G1 checkpoint. Oncogene. 19(52). 6082–6090. 25 indexed citations

15.

Schaefer, Olaf, et al.. (1992). 089 Qualitative and quantitative determination of a multi-component-pesticide mixture in water by bioanalytical and chemometric methods. Analytical and Bioanalytical Chemistry. 343(1). 147–148. 1 indexed citations

16.

Schlaeppi, Jean-Marc, Olaf Schaefer, & Dimitri Karamata. (1985). Cell wall and DNA cosegregation in Bacillus subtilis studied by electron microscope autoradiography. Journal of Bacteriology. 164(1). 130–135. 16 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.

Explore authors with similar magnitude of impact