Maria Schaefer-Ridder

3.2k total citations · 1 hit paper
15 papers, 2.4k citations indexed

About

Maria Schaefer-Ridder is a scholar working on Molecular Biology, Organic Chemistry and Cancer Research. According to data from OpenAlex, Maria Schaefer-Ridder has authored 15 papers receiving a total of 2.4k indexed citations (citations by other indexed papers that have themselves been cited), including 8 papers in Molecular Biology, 7 papers in Organic Chemistry and 6 papers in Cancer Research. Recurrent topics in Maria Schaefer-Ridder's work include Carcinogens and Genotoxicity Assessment (6 papers), Cancer therapeutics and mechanisms (4 papers) and DNA Repair Mechanisms (3 papers). Maria Schaefer-Ridder is often cited by papers focused on Carcinogens and Genotoxicity Assessment (6 papers), Cancer therapeutics and mechanisms (4 papers) and DNA Repair Mechanisms (3 papers). Maria Schaefer-Ridder collaborates with scholars based in Germany and United States. Maria Schaefer-Ridder's co-authors include P. H. Hofschneider, E. Neumann, Roland E. Lehr, Yuan Wang, Donald M. Jerina, Wayne Levin, Allan H. Conney, Alexander W. Wood, Jean M. Karle and Richard L. Chang and has published in prestigious journals such as Science, Proceedings of the National Academy of Sciences and The EMBO Journal.

In The Last Decade

Maria Schaefer-Ridder

15 papers receiving 2.2k citations

Hit Papers

Gene transfer into mouse lyoma cells by electroporation i... 1982 2026 1996 2011 1982 500 1000 1.5k
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.

  1. Gene transfer into mouse lyoma cells by electroporation in high electric fields.
    1982 1.8k citations E. Neumann, Maria Schaefer-Ridder et al. The EMBO Journal profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Maria Schaefer-Ridder Germany 11 1.3k 1.0k 864 270 265 15 2.4k
Jean Belehradek France 26 2.5k 2.0× 927 0.9× 1.6k 1.9× 129 0.5× 233 0.9× 48 3.6k
Sui‐Lam Wong Canada 25 426 0.3× 2.5k 2.4× 213 0.2× 478 1.8× 38 0.1× 54 3.1k
Klaus Breddam Denmark 32 488 0.4× 2.1k 2.0× 68 0.1× 77 0.3× 75 0.3× 88 2.8k
Arthur E. Sowers United States 19 1.2k 0.9× 672 0.6× 970 1.1× 28 0.1× 398 1.5× 39 1.9k
Isao Uno Japan 32 123 0.1× 3.6k 3.4× 437 0.5× 252 0.9× 45 0.2× 68 4.0k
Kwan Yong Choi South Korea 24 216 0.2× 1.1k 1.1× 186 0.2× 70 0.3× 16 0.1× 57 1.8k
R Sikorski United States 11 190 0.1× 8.1k 7.8× 532 0.6× 523 1.9× 46 0.2× 18 8.8k
Jui‐Yoa Chang United States 29 141 0.1× 1.8k 1.7× 67 0.1× 383 1.4× 28 0.1× 93 2.8k
Terrance A. Stadheim United States 25 475 0.4× 1.8k 1.8× 217 0.3× 133 0.5× 13 0.0× 38 2.2k
Tirso Pons Spain 21 441 0.3× 975 0.9× 130 0.2× 171 0.6× 9 0.0× 68 1.8k

Countries citing papers authored by Maria Schaefer-Ridder

Since Specialization
Citations

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

Fields of papers citing papers by Maria Schaefer-Ridder

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Maria Schaefer-Ridder

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

All Works

15 of 15 papers shown
1.
Engelhardt, Ulrich H., et al.. (1985). Differentiated genotoxic response of carcinogenic and non-carcinogenic benzacridines and metabolites in rat hepatoma cells. Carcinogenesis. 6(3). 455–457. 2 indexed citations
2.
Schaefer-Ridder, Maria, et al.. (1984). Inactivation of the thymidine kinase gene after in vitro modification with benzo(a)pyrene-diol-epoxide and transfer to LTK- cells as a eukaryotic test for carcinogens.. PubMed. 44(12 Pt 1). 5861–6. 5 indexed citations
3.
Wood, Alexander W., Richard L. Chang, Wayne Levin, et al.. (1983). Mutagenicity of diol-epoxides and tetrahydroepoxides of benz(a)acridine and benz(c)acridine in bacteria and in mammalian cells.. PubMed. 43(4). 1656–62. 40 indexed citations
4.
Wang, Yuan, Christian Stratowa, Maria Schaefer-Ridder, Johannes Doehmer, & P. H. Hofschneider. (1983). Enhanced Production of Hepatitis B Surface Antigen in NIH 3T3 Mouse Fibroblasts by Using Extrachromosomally Replicating Bovine Papillomavirus Vector. Molecular and Cellular Biology. 3(6). 1032–1039. 23 indexed citations
5.
Neumann, E., et al.. (1982). Gene transfer into mouse lyoma cells by electroporation in high electric fields.. The EMBO Journal. 1(7). 841–845. 1826 indexed citations breakdown →
6.
Schaefer-Ridder, Maria, Yuan Wang, & P. H. Hofschneider. (1982). Liposomes as Gene Carriers: Efficient Transformation of Mouse L Cells by Thymidine Kinase Gene. Science. 215(4529). 166–168. 124 indexed citations
7.
Engelhardt, Ulrich H. & Maria Schaefer-Ridder. (1981). N-oxidation versus epoxidation in polycyclic azaarenes. Tetrahedron Letters. 22(47). 4687–4690. 6 indexed citations
8.
Schaefer-Ridder, Maria & Ulrich H. Engelhardt. (1981). Synthesis of trans-3,4-dihydroxy-3,4-dihydrobenz[a]- and -[c]acridines, possible proximate carcinogenic metabolites of polycyclic azaarenes. The Journal of Organic Chemistry. 46(14). 2895–2899. 10 indexed citations
9.
Wislocki, Peter G., Jaime Kapitulnik, Wayne Levin, et al.. (1978). Exceptional carcinogenic activity of benz[a]anthracene 3,4-dihydrodiol in the newborn mouse and the bay region theory.. Munich Personal RePEc Archive (Ludwig Maximilian University of Munich). 38(3). 693–6. 30 indexed citations
10.
Anastassiou, A. G., et al.. (1978). Pericyclic synthesis and exploratory photochemistry of potentially direct progenitors of the unrestricted hetero[11]annulene system. The Journal of Organic Chemistry. 43(2). 315–322. 15 indexed citations
11.
Lehr, Roland E., Maria Schaefer-Ridder, & Donald M. Jerina. (1977). Synthesis and properties of the vicinal trans dihydrodiols of anthracene, phenanthrene, and benzo[a]anthracene. The Journal of Organic Chemistry. 42(4). 736–744. 62 indexed citations
12.
Lehr, Roland E., Maria Schaefer-Ridder, & Donald M. Jerina. (1977). Synthesis and reactivity of diol epoxides derived from non-K-region trans-dihydrodiols of benzo[a]anthracene. Tetrahedron Letters. 18(6). 539–542. 27 indexed citations
13.
Wood, Alexander W., Richard L. Chang, Wayne Levin, et al.. (1977). Mutagenicity and cytotoxicity of benz[ a ]anthracene diol epoxides and tetrahydro-epoxides: Exceptional activity of the bay region 1,2-epoxides. Proceedings of the National Academy of Sciences. 74(7). 2746–2750. 72 indexed citations
14.
Wood, Alexander W., Wayne Levin, Richard L. Chang, et al.. (1977). Tumorigenicity of five dihydrodiols of benz(a)anthracene on mouse skin: exceptional activity of benz(a)anthracene 3,4-dihydrodiol.. Proceedings of the National Academy of Sciences. 74(8). 3176–3179. 48 indexed citations
15.
Wood, Alexander W., Wayne Levin, Albert Lu, et al.. (1976). Mutagenicity of metabolically activated benzo[a]anthracene 3,4-dihydrodiol: Evidence for bay region activation of carcinogenic polycyclic hydrocarbons. Biochemical and Biophysical Research Communications. 72(2). 680–686. 74 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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