Nikola Valkov

739 total citations
20 papers, 623 citations indexed

About

Nikola Valkov is a scholar working on Molecular Biology, Oncology and Public Health, Environmental and Occupational Health. According to data from OpenAlex, Nikola Valkov has authored 20 papers receiving a total of 623 indexed citations (citations by other indexed papers that have themselves been cited), including 13 papers in Molecular Biology, 8 papers in Oncology and 3 papers in Public Health, Environmental and Occupational Health. Recurrent topics in Nikola Valkov's work include Cancer therapeutics and mechanisms (10 papers), Cancer Research and Treatments (3 papers) and Cancer-related Molecular Pathways (3 papers). Nikola Valkov is often cited by papers focused on Cancer therapeutics and mechanisms (10 papers), Cancer Research and Treatments (3 papers) and Cancer-related Molecular Pathways (3 papers). Nikola Valkov collaborates with scholars based in United States, Bulgaria and United Kingdom. Nikola Valkov's co-authors include Daniel M. Sullivan, Jana Gump, Wen‐Ming Yang, Edward Seto, Shih‐Chang Tsai, Lori Hazlehurst, David Boulware, Lee Wisner, William S. Dalton and Burt Anderson and has published in prestigious journals such as Nature Genetics, Journal of Clinical Oncology and Blood.

In The Last Decade

Nikola Valkov

19 papers receiving 604 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Nikola Valkov United States 13 369 161 63 63 58 20 623
Chantal Illy France 9 415 1.1× 129 0.8× 45 0.7× 24 0.4× 108 1.9× 11 644
P. Elaine Butler United Kingdom 6 292 0.8× 122 0.8× 35 0.6× 29 0.5× 132 2.3× 10 564
G. Fendrich Switzerland 5 253 0.7× 123 0.8× 123 2.0× 13 0.2× 88 1.5× 5 541
Robert Kuhelj Slovenia 7 260 0.7× 161 1.0× 30 0.5× 26 0.4× 245 4.2× 9 518
Suzanne M. Gignac Germany 16 306 0.8× 136 0.8× 107 1.7× 19 0.3× 38 0.7× 38 697
Gerold Schwarz Germany 9 429 1.2× 156 1.0× 34 0.5× 21 0.3× 89 1.5× 13 746
Claudia M. Espitia United States 17 646 1.8× 270 1.7× 59 0.9× 18 0.3× 111 1.9× 39 1.1k
William Cushley United Kingdom 14 369 1.0× 107 0.7× 28 0.4× 79 1.3× 53 0.9× 44 899
Raymond A. Dwek United Kingdom 11 381 1.0× 57 0.4× 37 0.6× 21 0.3× 69 1.2× 11 654
Tibisay Guevara Spain 16 383 1.0× 168 1.0× 42 0.7× 15 0.2× 126 2.2× 31 827

Countries citing papers authored by Nikola Valkov

Since Specialization
Citations

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

Fields of papers citing papers by Nikola Valkov

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Nikola Valkov

This figure shows the co-authorship network connecting the top 25 collaborators of Nikola Valkov. A scholar is included among the top collaborators of Nikola Valkov 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 Nikola Valkov. Nikola Valkov 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.
2.
Permuth‐Wey, Jenny, David Boulware, Nikola Valkov, et al.. (2009). Sampling Strategies for Tissue Microarrays to Evaluate Biomarkers in Ovarian Cancer. Cancer Epidemiology Biomarkers & Prevention. 18(1). 28–34. 11 indexed citations
3.
Hassell, John R., et al.. (2008). Increased stromal extracellular matrix synthesis and assembly by insulin activated bovine keratocytes cultured under agarose. Experimental Eye Research. 87(6). 604–611. 25 indexed citations
4.
Moulder, Stacy, Nikola Valkov, Jana Gump, et al.. (2006). Is cytoplasmic localization of topoisomerase I (topo I) a mechanism of resistance for topo I inhibitors? Results from an NCCN sponsored phase II trial of gemcitabine and irinotecan in metastatic breast cancer.. Cancer Research. 66. 1270–1271. 1 indexed citations
5.
Moulder, Stacy L., Nikola Valkov, S. Minton, et al.. (2006). A single arm phase II trial of gemcitabine (G) and irinotecan (I) in metastatic breast cancer: Can localization of topoisomerase I (topo I) predict response to topo I inhibitors?. Journal of Clinical Oncology. 24(18_suppl). 661–661. 2 indexed citations
6.
Daud, Adil, Nikola Valkov, Barbara A. Centeno, et al.. (2005). Phase II Trial of Karenitecin in Patients with Malignant Melanoma: Clinical and Translational Study. Clinical Cancer Research. 11(8). 3009–3016. 57 indexed citations
7.
Valkov, Nikola, et al.. (2004). The cytoplasmic trafficking of DNA topoisomerase IIα correlates with etoposide resistance in human myeloma cells. Experimental Cell Research. 295(2). 421–431. 30 indexed citations
8.
Valkov, Nikola & Daniel M. Sullivan. (2003). Tumor p53 status and response to topoisomerase II inhibitors. Drug Resistance Updates. 6(1). 27–39. 28 indexed citations
9.
Hazlehurst, Lori, Nikola Valkov, Lee Wisner, et al.. (2001). Reduction in drug-induced DNA double-strand breaks associated with β1 integrin–mediated adhesion correlates with drug resistance in U937 cells. Blood. 98(6). 1897–1903. 105 indexed citations
10.
Widen, Raymond, et al.. (2001). Intracellular Induction of the Bartonella henselae virB Operon by Human Endothelial Cells. Infection and Immunity. 69(10). 6495–6502. 31 indexed citations
11.
Tsai, Shih‐Chang, Nikola Valkov, Wen‐Ming Yang, et al.. (2000). Histone deacetylase interacts directly with DNA topoisomerase II. Nature Genetics. 26(3). 349–353. 133 indexed citations
12.
Sullivan, Daniel M., William S. Dalton, Karen K. Fields, et al.. (2000). A phase i study of high-dose melphalan + topotecan + VP-16 phosphate (Mtv) Followed by autologous stem cell rescue in multiple myeloma. Experimental Hematology. 28(7). 110–110. 2 indexed citations
13.
Gowda, Siddarame, T. Satyanarayana, Craig L. Davis, et al.. (2000). The p20 Gene Product of Citrus Tristeza Virus Accumulates in the Amorphous Inclusion Bodies. Virology. 274(2). 246–254. 53 indexed citations
14.
Hu, Xiaotang, et al.. (2000). Prolonged activation of the mitogen-activated protein kinase pathway is required for macrophage-like differentiation of a human myeloid leukemic cell line.. PubMed. 11(4). 191–200. 51 indexed citations
15.
Widen, Raymond H., et al.. (2000). Transcriptional Activation of the htrA (High-Temperature Requirement A) Gene from Bartonella henselae. Infection and Immunity. 68(10). 5970–5978. 25 indexed citations
16.
Hochhauser, Daniel, Nikola Valkov, Jana Gump, et al.. (1999). Effects of wild‐type p53 expression on the quantity and activity of topoisomerase IIα and β in various human cancer cell lines. Journal of Cellular Biochemistry. 75(2). 245–257. 4 indexed citations
17.
Hochhauser, Daniel, Nikola Valkov, Jana Gump, et al.. (1999). Effects of wild-type p53 expression on the quantity and activity of topoisomerase II? and ? in various human cancer cell lines. Journal of Cellular Biochemistry. 75(2). 245–257. 17 indexed citations
18.
Valkov, Nikola, Jana Gump, & Daniel M. Sullivan. (1997). Quantitative immunofluorescence and immunoelectron microscopy of the topoisomerase IIα associated with nuclear matrices from wild-type and drug-resistant Chinese hamster ovary cell lines. Journal of Cellular Biochemistry. 67(1). 112–130. 14 indexed citations
19.
Valkov, Nikola, et al.. (1995). Electron microscopic demonstration of transcription of ram sperm chromatin.. PubMed. 84(339). 91–6. 8 indexed citations
20.
Valkov, Nikola, et al.. (1995). Electron microscopic data for the presence of post-meiotic gene expression in isolated ram sperm chromatin.. PubMed. 83(333). 85–90. 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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