John J. Ryan

2.7k total citations
35 papers, 2.1k citations indexed

About

John J. Ryan is a scholar working on Molecular Biology, Oncology and Immunology. According to data from OpenAlex, John J. Ryan has authored 35 papers receiving a total of 2.1k indexed citations (citations by other indexed papers that have themselves been cited), including 11 papers in Molecular Biology, 10 papers in Oncology and 8 papers in Immunology. Recurrent topics in John J. Ryan's work include Cytokine Signaling Pathways and Interactions (5 papers), Mast cells and histamine (4 papers) and Erythrocyte Function and Pathophysiology (3 papers). John J. Ryan is often cited by papers focused on Cytokine Signaling Pathways and Interactions (5 papers), Mast cells and histamine (4 papers) and Erythrocyte Function and Pathophysiology (3 papers). John J. Ryan collaborates with scholars based in United States, United Kingdom and Canada. John J. Ryan's co-authors include Ian Hay, Erik J. Bergstralh, Colum A. Gorman, Kenneth P. Offord, Stephen L. Archer, Zhigang Hong, Erik Morrow, Hannah J. Zhang, Willard W. Sharp and Sarah M. Jacobs-Helber and has published in prestigious journals such as Blood, Immunity and The Journal of Immunology.

In The Last Decade

John J. Ryan

34 papers receiving 2.1k citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
John J. Ryan United States	24	638	484	446	422	333	35	2.1k
Paola Altieri Italy	28	594 0.9×	212 0.4×	365 0.8×	262 0.6×	274 0.8×	77	2.3k
Anand P. Chokkalingam United States	29	918 1.4×	310 0.6×	335 0.8×	330 0.8×	220 0.7×	79	2.9k
Pamela Clark United States	17	361 0.6×	319 0.7×	369 0.8×	241 0.6×	327 1.0×	29	1.7k
Anna Vašků Czechia	27	610 1.0×	376 0.8×	233 0.5×	212 0.5×	190 0.6×	153	2.4k
Fred P.H.T.M. Romijn Netherlands	29	1.4k 2.3×	536 1.1×	319 0.7×	218 0.5×	329 1.0×	61	3.7k
Robert C. Atkins Australia	27	749 1.2×	803 1.7×	169 0.4×	191 0.5×	401 1.2×	58	2.9k
W. Bensen Canada	26	526 0.8×	246 0.5×	611 1.4×	134 0.3×	779 2.3×	74	3.4k
Marina Scavini Italy	31	499 0.8×	312 0.6×	451 1.0×	1.2k 2.8×	974 2.9×	116	3.0k
M Ferdeghini Italy	34	467 0.7×	261 0.5×	578 1.3×	1.3k 3.0×	740 2.2×	153	3.2k
A. Testa Italy	26	330 0.5×	173 0.4×	213 0.5×	216 0.5×	372 1.1×	86	2.1k

Countries citing papers authored by John J. Ryan

Since Specialization

Citations

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

Fields of papers citing papers by John J. Ryan

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by John J. Ryan. 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 John J. Ryan. The network helps show where John J. Ryan may publish in the future.

Co-authorship network of co-authors of John J. Ryan

This figure shows the co-authorship network connecting the top 25 collaborators of John J. Ryan. A scholar is included among the top collaborators of John J. Ryan 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 John J. Ryan. John J. Ryan 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

O’Neill, Eileen, Dai‐Yin Lu, John J. Ryan, et al.. (2025). Methamphetamine‐Associated Pulmonary Arterial Hypertension Is Associated With Worse Right Ventricular Function Than Idiopathic Pulmonary Arterial Hypertension: A Matched Study. Echocardiography. 42(5). e70180–e70180.

Stephenson, Daniel, L. Alexis Hoeferlin, Jennifer S. Wayne, et al.. (2019). The interaction of ceramide 1-phosphate with group IVA cytosolic phospholipase A ₂ coordinates acute wound healing and repair. Science Signaling. 12(610). 31 indexed citations

Hall, Jennifer L., John J. Ryan, Bruce E. Bray, et al.. (2016). Merging Electronic Health Record Data and Genomics for Cardiovascular Research. Circulation Cardiovascular Genetics. 9(2). 193–202. 17 indexed citations

Sardar, Partha, Saurav Chatterjee, Jay Giri, et al.. (2015). Endovascular therapy for acute ischaemic stroke: a systematic review and meta-analysis of randomized trials. European Heart Journal. 36(35). 2373–2380. 60 indexed citations

Ryan, John J., et al.. (2011). Fall Risk Assessment Among Older Adults With Mild Alzheimer Disease. Journal of Geriatric Physical Therapy. 34(1). 19–27. 28 indexed citations

Masuda, Yoshito, Takesumi Yoshimura, Jumboku Kajiwara, & John J. Ryan. (2007). [Trend of PCB/PCDF concentrations in the blood of Yusho patients for 38 years after the incidence].. PubMed. 98(5). 182–95. 5 indexed citations

Ryan, John J., Mohit Kashyap, Daniel P. Bailey, et al.. (2007). Mast Cell Homeostasis: A Fundamental Aspect of Allergic Disease. Critical Reviews in Immunology. 27(1). 15–32. 69 indexed citations

Dickensheets, Harold, Nancy Vázquez, Faruk Sheikh, et al.. (2006). Suppressor of cytokine signaling-1 is an IL-4-inducible gene in macrophages and feedback inhibits IL-4 signaling. Genes and Immunity. 8(1). 21–27. 65 indexed citations

Jindal, Rahul M., et al.. (2005). Kidney Transplantation and Gender Disparity. American Journal of Nephrology. 25(5). 474–483. 115 indexed citations

10.

Rudd, Meghan L., et al.. (2004). Autocrine actions of macrophage-derived catecholamines on interleukin-1β. Journal of Neuroimmunology. 160(1-2). 87–91. 46 indexed citations

11.

Shelburne, Christopher P., Margaret E. McCoy, Roland P. Piekorz, et al.. (2002). Stat5: an essential regulator of mast cell biology. Molecular Immunology. 38(16-18). 1187–1191. 26 indexed citations

12.

Ryan, John J., Christopher P. Shelburne, Daniel P. Bailey, et al.. (2001). Catecholamines in murine bone marrow derived mast cells. Journal of Neuroimmunology. 119(2). 231–238. 52 indexed citations

13.

Garcia-Valenzuela, Enrique, et al.. (2000). MULTIPLE RECURRENCES OF EXUDATIVE RETINAL DETACHMENT IN A PATIENT WITH VOGT-KOYANAGI-HARADA DISEASE. Retina. 20(6). 672–674. 6 indexed citations

14.

Wang, Helen Y., et al.. (1999). Cutting Edge: Effects of an Allergy-Associated Mutation in the Human IL-4Rα (Q576R) on Human IL-4-Induced Signal Transduction. The Journal of Immunology. 162(8). 4385–4389. 36 indexed citations

15.

Guo, Yue Leon, et al.. (1996). Different congeners of PCBs/PCDFs may have contributed to different health outcomes in the Yucheng cohort. Neurotoxicology and Teratology. 18(3). 255–256. 9 indexed citations

16.

Ryan, John J., Karen A. Klein, T. J. Neuberger, et al.. (1994). Role for the stem cell factor/KIT complex in schwann cell neoplasia and mast cell proliferation associated with neurofibromatosis. Journal of Neuroscience Research. 37(3). 415–432. 75 indexed citations

17.

Innes, Andrew J., Martin Dennis, A G Morgan, John J. Ryan, & R. P. Burden. (1992). ATTITUDES TOWARD ELECTIVE PRETRANSPLANT BLOOD TRANSFUSIONS IN RENAL UNITS IN THE UNITED KINGDOM. Transplantation. 53(4). 934–934. 1 indexed citations

18.

Gonchoroff, Nick J., John J. Ryan, Teresa K. Kimlinger, et al.. (1990). Effect of sonication on paraffin‐embedded tissue preparation for DNA flow cytometry. Cytometry. 11(5). 642–646. 33 indexed citations

19.

Grant, Clive S., Ian Hay, John J. Ryan, et al.. (1990). Diagnostic and prognostic utility of flow cytometric DNA measurements in follicular thyroid tumors. World Journal of Surgery. 14(3). 283–289. 41 indexed citations

20.

Hay, Ian, et al.. (1988). Distant Metastases in Differentiated Thyroid Carcinoma: A Multivariate Analysis of Prognostic Variables*. The Journal of Clinical Endocrinology & Metabolism. 67(3). 501–508. 280 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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