Leonard R. Johnson

8.9k total citations · 1 hit paper
165 papers, 7.0k citations indexed

About

Leonard R. Johnson is a scholar working on Molecular Biology, Surgery and Biochemistry. According to data from OpenAlex, Leonard R. Johnson has authored 165 papers receiving a total of 7.0k indexed citations (citations by other indexed papers that have themselves been cited), including 82 papers in Molecular Biology, 31 papers in Surgery and 30 papers in Biochemistry. Recurrent topics in Leonard R. Johnson's work include Polyamine Metabolism and Applications (52 papers), Amino Acid Enzymes and Metabolism (30 papers) and Helicobacter pylori-related gastroenterology studies (23 papers). Leonard R. Johnson is often cited by papers focused on Polyamine Metabolism and Applications (52 papers), Amino Acid Enzymes and Metabolism (30 papers) and Helicobacter pylori-related gastroenterology studies (23 papers). Leonard R. Johnson collaborates with scholars based in United States, Taiwan and Australia. Leonard R. Johnson's co-authors include Ramesh M. Ray, Sujoy Bhattacharya, Morton I. Grossman, Artur Dembiński, Lenard M. Lichtenberger, Paul D. Guthrie, Stanley J. Dudrick, Shirley A. McCormack, Edward M. Copeland and Eugene D. Jacobson and has published in prestigious journals such as Journal of Biological Chemistry, The Journal of Experimental Medicine and Gastroenterology.

In The Last Decade

Leonard R. Johnson

161 papers receiving 6.4k 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.

The Trophic Action of Gastrointestinal Hormones

1976 361 citations Leonard R. Johnson Gastroenterology profile →

Peers

Leonard R. Johnson

SURGE

PHYSI

CMN

Kazumasa Matsumoto Japan

Ronaldo P. Ferraris United States

Michael C. Nelson United States

Chee‐Yin Chai Taiwan

Giuseppe Calamita Italy

Hongwei Wang China

Norbert Weiss Germany

Marvin M. Nachlas United States

Pawel R. Kiela United States

Takeshi Horio Japan

Kazumasa Matsumoto Japan

Leonard R. Johnson

2.8k ×1.0

1.9k ×0.9

SURGE

386 ×0.4

408 ×0.5

PHYSI

543 ×0.7

CMN

Citations per year, relative to Leonard R. Johnson Leonard R. Johnson (= 1×) peers Kazumasa Matsumoto

Countries citing papers authored by Leonard R. Johnson

Since Specialization

Citations

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

Fields of papers citing papers by Leonard R. Johnson

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Leonard R. Johnson. 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 Leonard R. Johnson. The network helps show where Leonard R. Johnson may publish in the future.

Co-authorship network of co-authors of Leonard R. Johnson

This figure shows the co-authorship network connecting the top 25 collaborators of Leonard R. Johnson. A scholar is included among the top collaborators of Leonard R. Johnson 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 Leonard R. Johnson. Leonard R. Johnson 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

Johnson, Leonard R., et al.. (2023). Severe Thrombocytopenia in a 30-Year-Old African American Male With Newly Diagnosed Sarcoidosis: A Case Report. Cureus. 15(1). e34135–e34135. 1 indexed citations

Giuliano, Christopher, et al.. (2022). Azithromycin Versus Beta-lactams in Hospitalized Patients with Acute Exacerbations of COPD. Journal of General Internal Medicine. 37(16). 4183–4188. 3 indexed citations

Thompson, Karin E., Ramesh M. Ray, Shanta Alli, et al.. (2018). Prevention and treatment of secretory diarrhea by the lysophosphatidic acid analog Rx100. Experimental Biology and Medicine. 243(13). 1056–1065. 8 indexed citations

Deng, Wenlin, Yasuhiro Kimura, Andrea Balogh, et al.. (2015). Mitigation of the Hematopoietic and Gastrointestinal Acute Radiation Syndrome by Octadecenyl Thiophosphate, a Small Molecule Mimic of Lysophosphatidic Acid. Radiation Research. 183(4). 465–475. 31 indexed citations

Ray, Ramesh M., et al.. (2014). Spermidine, a sensor for antizyme 1 expression regulates intracellular polyamine homeostasis. Amino Acids. 46(8). 2005–2013. 14 indexed citations

Ray, Ramesh M. & Leonard R. Johnson. (2013). Regulation of intestinal mucosal growth by amino acids. Amino Acids. 46(3). 565–573. 24 indexed citations

Jin, Shi, et al.. (2013). The mechanism by which MEK/ERK regulates JNK and p38 activity in polyamine depleted IEC-6 cells during apoptosis. APOPTOSIS. 19(3). 467–479. 27 indexed citations

Ray, Ramesh M., Chunying Li, Sujoy Bhattacharya, Anjaparavanda P. Naren, & Leonard R. Johnson. (2011). Spermine, a molecular switch regulating EGFR, integrin β3, Src, and FAK scaffolding. Cellular Signalling. 24(4). 931–942. 19 indexed citations

Elias, Bertha C., et al.. (2010). Polyamine-dependent activation of Rac1 is stimulated by focal adhesion-mediated Tiam1 activation. Cell Adhesion & Migration. 4(3). 419–430. 15 indexed citations

10.

Bhattacharya, Sujoy, Ramesh M. Ray, & Leonard R. Johnson. (2008). Role of polyamines in p53-dependent apoptosis of intestinal epithelial cells. Cellular Signalling. 21(4). 509–522. 44 indexed citations

11.

Lippke, Bruce, Jeffrey M. Comnick, & Leonard R. Johnson. (2007). Environmental performance index for the forest. Wood and Fiber Science. 37. 149–155. 13 indexed citations

12.

Johnson, Leonard R., Bruce Lippke, John D. Marshall, & Jeffrey M. Comnick. (2005). Life-Cycle Impacts of Forest Resource Activities in the Pacific Northwest and Southeast United States. Wood and Fiber Science. 37. 30–46. 73 indexed citations

13.

Deng, Wenlin, Mary Jane Viar, & Leonard R. Johnson. (2005). Polyamine depletion inhibits irradiation-induced apoptosis in intestinal epithelia. American Journal of Physiology-Gastrointestinal and Liver Physiology. 289(3). G599–G606. 23 indexed citations

14.

Han, Han‐Sup, et al.. (2004). Economic feasibility of an integrated harvesting system for small-diameter trees in southwest Idaho.. Forest Products Journal. 54(2). 21–27. 61 indexed citations

15.

Deng, Wenlin, Helen Poppleton, Satoshi Yasuda, et al.. (2004). Optimal Lysophosphatidic Acid-induced DNA Synthesis and Cell Migration but Not Survival Require Intact Autophosphorylation Sites of the Epidermal Growth Factor Receptor. Journal of Biological Chemistry. 279(46). 47871–47880. 20 indexed citations

16.

Johnson, Dianna A., Rajesh Sharma, Katherine S. Allan, Ramesh M. Ray, & Leonard R. Johnson. (2004). Immunocytochemical localization of polyamines during attachment and spreading of retinal pigment epithelial and intestinal epithelial cells. Cell Motility and the Cytoskeleton. 58(4). 269–280. 2 indexed citations

17.

Lai, Wen‐Fu T., et al.. (1998). Two distinct classes of rat intestinal mucosal enzymes incorporating putrescine into protein. FEBS Letters. 435(2-3). 251–256. 13 indexed citations

18.

Wang, Jianying & Leonard R. Johnson. (1991). Polyamines and ornithine decarboxylase during repair of duodenal mucosa after stress in rats. Gastroenterology. 100(2). 333–343. 115 indexed citations

19.

Johnson, Leonard R., et al.. (1988). Ocean Sciences Directorate of the Office of Naval Research. Oceanography. 1(1). 24–25. 2 indexed citations

20.

Johnson, Leonard R., et al.. (1978). Costing forest residue recovery through simulation. Winter Simulation Conference. 787–792. 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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