Karel Šmejkal

5.2k total citations · 2 hit papers
125 papers, 4.0k citations indexed

About

Karel Šmejkal is a scholar working on Molecular Biology, Plant Science and Pharmacology. According to data from OpenAlex, Karel Šmejkal has authored 125 papers receiving a total of 4.0k indexed citations (citations by other indexed papers that have themselves been cited), including 79 papers in Molecular Biology, 41 papers in Plant Science and 20 papers in Pharmacology. Recurrent topics in Karel Šmejkal's work include Natural product bioactivities and synthesis (37 papers), Bioactive natural compounds (29 papers) and Phytochemistry and Biological Activities (28 papers). Karel Šmejkal is often cited by papers focused on Natural product bioactivities and synthesis (37 papers), Bioactive natural compounds (29 papers) and Phytochemistry and Biological Activities (28 papers). Karel Šmejkal collaborates with scholars based in Czechia, Italy and Slovakia. Karel Šmejkal's co-authors include Jakub Treml, Jan Hošek, Stefano Dall’Acqua, Sherif T. S. Hassan, Tereza Šlapetová, Margita Dvorská, Peter Kubatka, Milan Žemlička, Josef Cvačka and Murat Kartal and has published in prestigious journals such as SHILAP Revista de lepidopterología, PLoS ONE and Journal of Agricultural and Food Chemistry.

In The Last Decade

Karel Šmejkal

120 papers receiving 3.9k 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.

Flavonoids as Potent Scavengers of Hydroxyl Radicals

2016 355 citations Jakub Treml, Karel Šmejkal profile →
Berberine in Cardiovascular and Metabolic Diseases: From Mechanisms to Therapeutics

2019 323 citations Sherif T. S. Hassan, Karel Šmejkal et al. profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Karel Šmejkal Czechia	36	1.9k	1.0k	732	649	478	125	4.0k
Hyung Won Ryu South Korea	38	1.9k 1.0×	1.1k 1.1×	704 1.0×	591 0.9×	506 1.1×	182	4.6k
Mi Kyeong Lee South Korea	34	1.9k 1.0×	1.2k 1.1×	679 0.9×	456 0.7×	548 1.1×	208	3.6k
Ching‐Shu Lai Taiwan	43	2.0k 1.1×	1.1k 1.1×	591 0.8×	1.1k 1.7×	634 1.3×	92	4.9k
Soon Sung Lim South Korea	37	1.7k 0.9×	761 0.7×	471 0.6×	548 0.8×	528 1.1×	141	3.6k
Kasi Pandima Devi India	40	2.1k 1.1×	1.0k 1.0×	755 1.0×	653 1.0×	549 1.1×	118	5.9k
Birgit Waltenberger Austria	20	1.5k 0.8×	840 0.8×	565 0.8×	368 0.6×	477 1.0×	51	3.7k
Lie‐Fen Shyur Taiwan	38	1.9k 1.0×	1.3k 1.3×	452 0.6×	587 0.9×	588 1.2×	120	4.7k
Yumiko Kimura Japan	38	2.4k 1.3×	1.1k 1.0×	848 1.2×	580 0.9×	616 1.3×	100	4.4k
Shi Yong Ryu South Korea	41	2.2k 1.2×	928 0.9×	519 0.7×	472 0.7×	593 1.2×	118	4.2k
Motohiko Ukiya Japan	34	1.7k 0.9×	737 0.7×	597 0.8×	460 0.7×	529 1.1×	67	3.4k

Countries citing papers authored by Karel Šmejkal

Since Specialization

Citations

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

Fields of papers citing papers by Karel Šmejkal

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Karel Šmejkal

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

Šmejkal, Karel, et al.. (2025). Natural Phenolics Disrupt Microbial Communication by Inhibiting Quorum Sensing. Microorganisms. 13(2). 287–287.

Malaník, Milan, Jakub Treml, Renata Kubínová, et al.. (2025). Isolation of a Unique Monoterpene Diperoxy Dimer From Ziziphora clinopodioides subsp. bungeana Together With Triterpenes With Antidiabetic Properties. Phytochemical Analysis. 36(4). 1223–1230.

Malaník, Milan, Karel Šmejkal, Emil Švajdlenka, et al.. (2024). Dibenzocyclooctadiene Lignans from Schisandra chinensis with Anti-Inflammatory Effects. International Journal of Molecular Sciences. 25(6). 3465–3465. 9 indexed citations

Blondeau, Nicolas, Jan Kotouček, Karel Šmejkal, et al.. (2024). Enhancing Solubility and Bioefficacy of Stilbenes by Liposomal Encapsulation─The Case of Macasiamenene F. ACS Omega. 9(8). 9027–9039. 3 indexed citations

Malaník, Milan, et al.. (2023). Treating Epilepsy with Natural Products: Nonsense or Possibility?. Pharmaceuticals. 16(8). 1061–1061. 3 indexed citations

Trávnı́ček, Zdeněk, Ján Vančo, Jan Belza, et al.. (2023). The Gold(I) Complex with Plant Hormone Kinetin Shows Promising In Vitro Anticancer and PPARγ Properties. International Journal of Molecular Sciences. 24(3). 2293–2293. 3 indexed citations

Awad, Ezzat M., Simon Heß, André Oszwald, et al.. (2023). Lipophilic Statins Eliminate Senescent Endothelial Cells by inducing Anoikis-Related Cell Death. Cells. 12(24). 2836–2836. 12 indexed citations

Samec, Marek, Alena Líšková, Lenka Koklesová, et al.. (2021). Flavonoids Targeting HIF-1: Implications on Cancer Metabolism. Cancers. 13(1). 130–130. 72 indexed citations

Özgen, Ufuk, Karel Šmejkal, Fatma Sezer Şenol, et al.. (2020). Cholinesterase and Tyrosinase Inhibitory Potential and Antioxidant Capacity of <İ>Lysimachia verticillaris</İ> L. and Isolation of the Major Compounds. Turkish Journal of Pharmaceutical Sciences. 17(5). 528–534. 6 indexed citations

10.

Šmejkal, Karel, et al.. (2020). Flavonol glycosides from aerial parts of Astragalus thracicus Griseb. Phytochemistry Letters. 41. 119–122. 3 indexed citations

11.

Yeung, Andy Wai Kan, Andrei Mocan, Nikolay Tzvetkov, et al.. (2020). Natural Products, the Continuous Source of Therapeutic Molecules for Various Diseases: Literature Landscape Analysis. Current Molecular Pharmacology. 14(6). 993–1002. 1 indexed citations

12.

Hassan, Sherif T. S., Miroslava Šudomová, Kateřina Berchová‐Bímová, Karel Šmejkal, & Javier Echeverría. (2019). Psoromic Acid, a Lichen-Derived Molecule, Inhibits the Replication of HSV-1 and HSV-2, and Inactivates HSV-1 DNA Polymerase: Shedding Light on Antiherpetic Properties. Molecules. 24(16). 2912–2912. 33 indexed citations

13.

Yeung, Andy Wai Kan, Nikolay Tzvetkov, Andrei Mocan, et al.. (2019). Curcumin: Total-Scale Analysis of the Scientific Literature. Molecules. 24(7). 1393–1393. 57 indexed citations

14.

Sychrová, Alice, Sherif T. S. Hassan, Kateřina Berchová‐Bímová, et al.. (2019). Multiple In vitro biological effects of phenolic compounds from Morus alba root bark. Journal of Ethnopharmacology. 248. 112296–112296. 49 indexed citations

15.

Açıkara, Özlem Bahadır, Serkan Özbilgin, Gülçin Saltan Çitoğlu, et al.. (2018). Phytochemical Analysis of Podospermum and Scorzonera n-Hexane Extracts and the HPLC Quantitation of Triterpenes. Molecules. 23(7). 1813–1813. 16 indexed citations

16.

Šmejkal, Karel, et al.. (2016). Use of plant extracts as an efficient alternative therapy of respiratory tract infections. Česká a slovenská farmacie. 65(4). 139–160. 6 indexed citations

17.

Orhan, İlkay Erdoğan, Fatma Sezer Şenol, Betül Demırcı, et al.. (2016). Antioxidant potential of some natural and semi-synthetic flavonoid derivatives and the extracts from Maclura pomifera (Rafin.) Schneider (osage orange) and its essential oil composition. Turkish Journal of Biochemistry. 41(6). 403–411. 7 indexed citations

18.

Žemlička, Milan, et al.. (2015). The chemotaxonomic significance of phenylethanoid glycosides of Lathraea squamaria L. (Orobanchaceae). Biochemical Systematics and Ecology. 64. 53–56. 11 indexed citations

19.

Hošek, Jan, et al.. (2010). Effect of diplacone on LPS-induced inflammatory gene expression in macrophages.. PubMed. 56(3). 124–30. 20 indexed citations

20.

Šmejkal, Karel, et al.. (2009). Analgesic compounds from Scorzonera Latifolia. Research Padua Archive (University of Padua). 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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