Roberta M. Johnke

676 total citations
23 papers, 571 citations indexed

About

Roberta M. Johnke is a scholar working on Radiology, Nuclear Medicine and Imaging, Molecular Biology and Oncology. According to data from OpenAlex, Roberta M. Johnke has authored 23 papers receiving a total of 571 indexed citations (citations by other indexed papers that have themselves been cited), including 13 papers in Radiology, Nuclear Medicine and Imaging, 10 papers in Molecular Biology and 5 papers in Oncology. Recurrent topics in Roberta M. Johnke's work include Effects of Radiation Exposure (13 papers), Ginseng Biological Effects and Applications (5 papers) and DNA Repair Mechanisms (5 papers). Roberta M. Johnke is often cited by papers focused on Effects of Radiation Exposure (13 papers), Ginseng Biological Effects and Applications (5 papers) and DNA Repair Mechanisms (5 papers). Roberta M. Johnke collaborates with scholars based in United States, China and Brazil. Roberta M. Johnke's co-authors include Ron R. Allison, Tung‐Kwang Lee, Kevin O’Brien, Larry Dobbs, C. J. Kovacs, Mark J. Evans, Chao Sheng, Ulf Karlsson, Tao Wang and Hyder Arastu and has published in prestigious journals such as Analytical Biochemistry, International Journal of Radiation Oncology*Biology*Physics and Stem Cells.

In The Last Decade

Roberta M. Johnke

23 papers receiving 547 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Roberta M. Johnke United States 13 267 190 120 89 70 23 571
Miyuki Ito Japan 16 256 1.0× 119 0.6× 63 0.5× 35 0.4× 47 0.7× 43 653
Luís Gaspar Portugal 11 117 0.4× 131 0.7× 280 2.3× 42 0.5× 31 0.4× 18 857
Craig B Struble United States 15 128 0.5× 114 0.6× 33 0.3× 43 0.5× 41 0.6× 33 544
Abouzar Bagheri Iran 18 323 1.2× 69 0.4× 31 0.3× 179 2.0× 35 0.5× 54 720
Saijun Fan China 11 257 1.0× 66 0.3× 62 0.5× 75 0.8× 63 0.9× 32 581
Jiahao Zhang China 7 284 1.1× 40 0.2× 81 0.7× 70 0.8× 28 0.4× 25 604
Dan Song China 14 180 0.7× 74 0.4× 29 0.2× 70 0.8× 59 0.8× 41 497
Frank P. Lloyd United States 11 155 0.6× 52 0.3× 37 0.3× 87 1.0× 103 1.5× 13 532
Yong‐Seok Song United States 15 285 1.1× 27 0.1× 115 1.0× 98 1.1× 159 2.3× 50 693

Countries citing papers authored by Roberta M. Johnke

Since Specialization
Citations

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

Fields of papers citing papers by Roberta M. Johnke

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Roberta M. Johnke. 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 Roberta M. Johnke. The network helps show where Roberta M. Johnke may publish in the future.

Co-authorship network of co-authors of Roberta M. Johnke

This figure shows the co-authorship network connecting the top 25 collaborators of Roberta M. Johnke. A scholar is included among the top collaborators of Roberta M. Johnke 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 Roberta M. Johnke. Roberta M. Johnke 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.
Johnke, Roberta M., et al.. (2014). Radioprotective Agents for Radiation Therapy: Future Trends. Future Oncology. 10(15). 2345–2357. 119 indexed citations
2.
Huang, Zhibin, Nina A. Mayr, Simon S. Lo, et al.. (2011). A generalized linear-quadratic model incorporating reciprocal time pattern of radiation damage repair. Medical Physics. 39(1). 224–230. 12 indexed citations
3.
Lee, Tung‐Kwang, Kevin O’Brien, Roberta M. Johnke, et al.. (2010). Radioprotective Effect of American Ginseng on Human Lymphocytes at 90 Minutes Postirradiation: A Study of 40 Cases. The Journal of Alternative and Complementary Medicine. 16(5). 561–567. 43 indexed citations
4.
Johnke, Roberta M., et al.. (2009). Radioprotection of murine gastrointestinal epithelium by interleukin-1alpha involves down-regulation of the apoptotic response.. PubMed. 28(6A). 3601–7. 6 indexed citations
5.
Lee, Tung‐Kwang, Kevin O’Brien, Chao Sheng, et al.. (2009). American Ginseng Modifies 137Cs-Induced DNA Damage and Oxidative Stress in Human Lymphocytes. PubMed. 1(1). 1–8. 12 indexed citations
6.
Johnke, Roberta M., Mark J. Evans, Gladys N. Nangami, et al.. (2009). Circulating cytokine levels in prostate cancer patients undergoing radiation therapy: influence of neoadjuvant total androgen suppression.. PubMed. 23(5). 827–33. 17 indexed citations
7.
Lee, Tung‐Kwang, et al.. (2008). Effect of North American Ginseng on 137Cs‐induced Micronuclei in Human Lymphocytes: A Comparison with WR‐1065. Phytotherapy Research. 22(12). 1614–1622. 13 indexed citations
8.
Menezes, Priscila Fernanda Campos de, Vanderlei Salvador Bagnato, Roberta M. Johnke, et al.. (2007). Photodynamic therapy for Photogem® and Photofrin® using different light wavelengths in 375 human melanoma cells. Laser Physics Letters. 4(7). 546–551. 34 indexed citations
9.
Lee, Tung‐Kwang, Roberta M. Johnke, Ron R. Allison, Kevin O’Brien, & Larry Dobbs. (2005). Radioprotective potential of ginseng. Mutagenesis. 20(4). 237–243. 162 indexed citations
10.
Johnke, Roberta M., C. J. Kovacs, Mark J. Evans, et al.. (2005). Response of T lymphocyte populations in prostate cancer patients undergoing radiotherapy: influence of neoajuvant total androgen suppression.. PubMed. 25(4). 3159–66. 15 indexed citations
11.
Kovacs, C. J., et al.. (2005). The expression of p21/WAF-1 and cyclin B1 mediate mitotic delay in x-irradiated fibroblasts.. PubMed. 25(2A). 1123–9. 5 indexed citations
12.
Ahmed, Farid, Larry Dobbs, Roberta M. Johnke, et al.. (2004). Isolation of circulating colon carcinoma cells for reverse transcriptase polymerase chain reaction. Analytical Biochemistry. 332(2). 394–397. 1 indexed citations
13.
Ahmed, Farid, Donald T. Lysle, Larry Dobbs, et al.. (2004). Improved Methods for Extracting RNA from Exfoliated Human Colonocytes in Stool and RT-PCR Analysis. Digestive Diseases and Sciences. 49(11-12). 1889–1898. 27 indexed citations
14.
Lee, Tung‐Kwang, Ron R. Allison, Kevin O’Brien, et al.. (2003). Ginseng reduces the micronuclei yield in lymphocytes after irradiation. Mutation Research/Genetic Toxicology and Environmental Mutagenesis. 557(1). 75–84. 29 indexed citations
15.
Lee, Tung‐Kwang, Ron R. Allison, Kevin O’Brien, et al.. (2003). Lymphocyte radiosensitivity correlated with pelvic radiotherapy morbidity. International Journal of Radiation Oncology*Biology*Physics. 57(1). 222–229. 37 indexed citations
16.
17.
18.
Kovacs, C. J., et al.. (1992). Absence of interleukin 1α radioprotection in tumor-bearing animals: elevated plasma levels of prostaglandin E versus a preexisting primed marrow. Journal of Leukocyte Biology. 51(1). 53–58. 1 indexed citations
19.
Johnke, Roberta M., et al.. (1990). Accelerated Postirradiation Recovery of Hematopoietic Marrow Following Priming with Low Doses of Vincristine. Radiation Research. 122(3). 234–234. 2 indexed citations
20.
Kovacs, C. J., et al.. (1985). Haemopoietic modulation in tumour‐bearing animals: enhanced progenitor‐cell production in femoral marrow. Cell Proliferation. 18(3). 235–246. 12 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

Breakdown of academic impact, for papers by Miyuki Ito Breakdown of academic impact, for papers by Luís Gaspar Breakdown of academic impact, for papers by Craig B Struble Breakdown of academic impact, for papers by Abouzar Bagheri Breakdown of academic impact, for papers by Saijun Fan Breakdown of academic impact, for papers by Jiahao Zhang Breakdown of academic impact, for papers by Dan Song Breakdown of academic impact, for papers by Frank P. Lloyd Breakdown of academic impact, for papers by Yong‐Seok Song
Rankless by CCL
2026