Jan St. Pyrek

1.8k total citations
74 papers, 1.5k citations indexed

About

Jan St. Pyrek is a scholar working on Molecular Biology, Oncology and Surgery. According to data from OpenAlex, Jan St. Pyrek has authored 74 papers receiving a total of 1.5k indexed citations (citations by other indexed papers that have themselves been cited), including 37 papers in Molecular Biology, 18 papers in Oncology and 15 papers in Surgery. Recurrent topics in Jan St. Pyrek's work include Drug Transport and Resistance Mechanisms (16 papers), Analytical Chemistry and Chromatography (12 papers) and Steroid Chemistry and Biochemistry (12 papers). Jan St. Pyrek is often cited by papers focused on Drug Transport and Resistance Mechanisms (16 papers), Analytical Chemistry and Chromatography (12 papers) and Steroid Chemistry and Biochemistry (12 papers). Jan St. Pyrek collaborates with scholars based in United States, Poland and Italy. Jan St. Pyrek's co-authors include Roger Lester, A Radomińska-Pyrek, George J. Schroepfer, Jack P. Goodman, Piotr Zimniak, William K. Wilson, Eugene W. Adcock, Louis B. Hersh, O. Achmatowicz and Atish Mukherjee and has published in prestigious journals such as Journal of the American Chemical Society, Journal of Biological Chemistry and Journal of Clinical Investigation.

In The Last Decade

Jan St. Pyrek

72 papers receiving 1.4k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Jan St. Pyrek United States 23 706 378 364 237 217 74 1.5k
Terence Lawson United States 26 858 1.2× 172 0.5× 345 0.9× 180 0.8× 169 0.8× 97 1.8k
M. Galli Kienle Italy 23 766 1.1× 325 0.9× 189 0.5× 75 0.3× 80 0.4× 103 1.6k
Mitsuteru Numazawa Japan 23 1.0k 1.5× 298 0.8× 171 0.5× 304 1.3× 403 1.9× 160 2.2k
K Krisch Germany 25 841 1.2× 169 0.4× 267 0.7× 91 0.4× 195 0.9× 106 1.8k
Masuo Morisaki Japan 23 919 1.3× 190 0.5× 111 0.3× 291 1.2× 160 0.7× 113 1.9k
Marcel Gut United States 25 1.0k 1.4× 326 0.9× 164 0.5× 276 1.2× 484 2.2× 121 2.0k
Michael D. Aleo United States 24 694 1.0× 107 0.3× 309 0.8× 139 0.6× 769 3.5× 51 2.0k
Gino Salituro United States 20 803 1.1× 194 0.5× 164 0.5× 392 1.7× 75 0.3× 46 1.6k
Dominick L. Cinti United States 26 1.2k 1.7× 134 0.4× 435 1.2× 87 0.4× 1.2k 5.6× 74 2.7k
Shlomo Burstein United States 24 800 1.1× 341 0.9× 198 0.5× 83 0.4× 381 1.8× 83 2.0k

Countries citing papers authored by Jan St. Pyrek

Since Specialization
Citations

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

Fields of papers citing papers by Jan St. Pyrek

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Jan St. Pyrek. 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 Jan St. Pyrek. The network helps show where Jan St. Pyrek may publish in the future.

Co-authorship network of co-authors of Jan St. Pyrek

This figure shows the co-authorship network connecting the top 25 collaborators of Jan St. Pyrek. A scholar is included among the top collaborators of Jan St. Pyrek 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 Jan St. Pyrek. Jan St. Pyrek 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.
Wang, Hongna, Anwar Hussain, Jan St. Pyrek, Jack P. Goodman, & Peter J. Wedlund. (2004). Assay for nipecotic acid in small blood samples by gas chromatography–mass spectroscopy. Journal of Pharmaceutical and Biomedical Analysis. 34(5). 1063–1070. 23 indexed citations
2.
Mukherjee, Atish, María A. Juliano, Jan St. Pyrek, et al.. (2001). Analysis of the Subsite Specificity of Rat Insulysin Using Fluorogenic Peptide Substrates. Journal of Biological Chemistry. 276(2). 1152–1155. 34 indexed citations
3.
Wang, Dasheng, Tsui‐Ting Ching, Jan St. Pyrek, & Ching‐Shih Chen. (2000). Biotinylated Phosphatidylinositol 3,4,5-Trisphosphate as Affinity Ligand. Analytical Biochemistry. 280(2). 301–307. 11 indexed citations
4.
Chow, K. Martin, Éva Csuhai, María A. Juliano, et al.. (2000). Studies on the Subsite Specificity of Rat Nardilysin (N-Arginine Dibasic Convertase). Journal of Biological Chemistry. 275(26). 19545–19551. 12 indexed citations
5.
6.
Snyder, John, Zhenhua Guo, Richard R. Thacker, Jack P. Goodman, & Jan St. Pyrek. (1993). 2,3-Dihydrofarnesoic acid, a unique terpene from trichomes ofLycopersicon hirsutum, repels spider mites. Journal of Chemical Ecology. 19(12). 2981–2997. 37 indexed citations
7.
Stoilov, Ivan, David S. Watt, Jan St. Pyrek, et al.. (1993). Synthesis of biological markers in fossil fuels. 7. Selected diastereomers of 4.alpha.-methyl-5.alpha.-stigmastane and 5.alpha.-dinosterane. The Journal of Organic Chemistry. 58(12). 3444–3454. 11 indexed citations
8.
Radominska, A, Joanna M. Little, Roger Lester, & Jan St. Pyrek. (1992). Hepatic metabolism of 3-oxoandrost-4-ene-17β-carboxylic acid in the adult rat: formation of carboxyl-linked glucuronides both in vivo and in vitro. Steroids. 57(7). 328–334. 2 indexed citations
9.
Pyrek, Jan St., J.L. Vermilion, T.W. Stephens, William K. Wilson, & George J. Schroepfer. (1989). Inhibitors of sterol synthesis. Journal of Biological Chemistry. 264(8). 4536–4543. 81 indexed citations
10.
Schroepfer, George J., Hong-Seok Kim, J.L. Vermilion, et al.. (1988). Enzymatic formation and chemical synthesis of an active metabolite of 3β-hydroxy-5α-cholest-8(14)-en-15-one, a potent regulator of cholesterol metabolism. Biochemical and Biophysical Research Communications. 151(1). 130–136. 31 indexed citations
11.
Radomińska-Pyrek, A, Piotr Zimniak, Yacoub M. Irshaid, et al.. (1987). Glucuronidation of 6 alpha-hydroxy bile acids by human liver microsomes.. Journal of Clinical Investigation. 80(1). 234–241. 82 indexed citations
12.
Pyrek, Jan St.. (1987). Constituents of human meconium—III. Identification of 3,20-dihydroxypregnan-21-oic acids. Steroids. 49(4-5). 313–333. 4 indexed citations
13.
Radomińska-Pyrek, A, Karen E. Shattuck, Piotr Zimniak, Roger Lester, & Jan St. Pyrek. (1986). Diglucuronide: a novel bile acid metabolite. Fed. Proc., Fed. Am. Soc. Exp. Biol.; (United States). 2 indexed citations
14.
Wenkert, Ernest, et al.. (1986). Carbon-carbon bond-forming additions to 1-alkyl-3-acylpyridinium salts. The Journal of Organic Chemistry. 51(15). 2995–3000. 23 indexed citations
15.
Pyrek, Jan St.. (1985). Sesquiterpene lactones of Cichorium intybus and Leontodon autumnalis. Phytochemistry. 24(1). 186–188. 48 indexed citations
16.
Lester, Roger, Jan St. Pyrek, J M Little, & Eugene W. Adcock. (1983). Diversity of Bile Acids in the Fetus and Newborn Infant. Journal of Pediatric Gastroenterology and Nutrition. 2(2). 355–364. 30 indexed citations
17.
Tcholakian, Robert K., Anna Steinberger, & Jan St. Pyrek. (1983). Metabolism of 3H-estradiol-17β by cultures of isolated rat sertoli cells and the effect of fsh: presence of 16α-hydroxylase. Steroids. 42(1). 55–62. 3 indexed citations
18.
Arnone, Alberto, Rafael Francisco Lia Mondelli, & Jan St. Pyrek. (1979). 13C NMR spectroscopy of natural substances: IV—13C NMR studies of trachylobane diterpenes: Complete carbon assignment. Organic Magnetic Resonance. 12(7). 429–431. 21 indexed citations
19.
Pyrek, Jan St.. (1969). A new 4β-methyl-sterol from Marigold flowers. Journal of the Chemical Society D Chemical Communications. 0(3). 107–108. 5 indexed citations
20.
Kasprzyk, Zofia, et al.. (1968). The variations of free and bound sterols in Calendula officinalis during vegetation.. PubMed. 15(2). 149–59. 8 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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