J. M. Ryan

454 total citations
16 papers, 360 citations indexed

About

J. M. Ryan is a scholar working on Molecular Biology, Physiology and Cancer Research. According to data from OpenAlex, J. M. Ryan has authored 16 papers receiving a total of 360 indexed citations (citations by other indexed papers that have themselves been cited), including 12 papers in Molecular Biology, 6 papers in Physiology and 3 papers in Cancer Research. Recurrent topics in J. M. Ryan's work include Telomeres, Telomerase, and Senescence (6 papers), RNA Interference and Gene Delivery (5 papers) and Pluripotent Stem Cells Research (3 papers). J. M. Ryan is often cited by papers focused on Telomeres, Telomerase, and Senescence (6 papers), RNA Interference and Gene Delivery (5 papers) and Pluripotent Stem Cells Research (3 papers). J. M. Ryan collaborates with scholars based in United States, United Kingdom and Czechia. J. M. Ryan's co-authors include Vincent J. Cristofalo, Patrick A. Marcotte, Sarah A. Dorwin, Eva Y. Deykin, Peter Nielsen, Georg N. Duda, Louisa Nelson, David G. Ostrow, Elliot S. Gershon and Xandra O. Breakefield and has published in prestigious journals such as Journal of Biological Chemistry, Biochemical and Biophysical Research Communications and Experimental Cell Research.

In The Last Decade

J. M. Ryan

16 papers receiving 339 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
J. M. Ryan United States	9	221	138	59	41	38	16	360
Louis F. Marek United States	7	184 0.8×	107 0.8×	18 0.3×	26 0.6×	30 0.8×	9	311
Steven Schonberg United States	13	247 1.1×	80 0.6×	52 0.9×	147 3.6×	15 0.4×	19	422
Sarah A. Bruce United States	9	197 0.9×	85 0.6×	29 0.5×	54 1.3×	21 0.6×	18	382
Pia Osterman Sweden	10	292 1.3×	182 1.3×	47 0.8×	60 1.5×	65 1.7×	19	483
Anjali A. Sarkar United States	11	219 1.0×	41 0.3×	30 0.5×	42 1.0×	8 0.2×	30	408
Marie‐Alix Derieppe France	8	280 1.3×	38 0.3×	121 2.1×	46 1.1×	12 0.3×	15	490
Marı́a José Ramı́rez Spain	13	478 2.2×	58 0.4×	151 2.6×	120 2.9×	21 0.6×	48	689
M.M. Aronson United States	13	264 1.2×	50 0.4×	75 1.3×	213 5.2×	5 0.1×	48	498
Heloísa G. dos Santos Portugal	11	652 3.0×	46 0.3×	11 0.2×	102 2.5×	9 0.2×	18	767
Stefan Zalavary Sweden	10	149 0.7×	52 0.4×	67 1.1×	31 0.8×	3 0.1×	12	395

Countries citing papers authored by J. M. Ryan

Since Specialization

Citations

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

Fields of papers citing papers by J. M. Ryan

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

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

This figure shows the co-authorship network connecting the top 25 collaborators of J. M. Ryan. A scholar is included among the top collaborators of J. M. 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 J. M. Ryan. J. M. 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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16 of 16 papers shown

Beqaj, Safedin, et al.. (2004). IDENTIFICATION OF CELLS RESPONSIBLE FOR UROKINASE-TYPE PLASMINOGEN ACTIVATOR SYNTHESIS AND SECRETION IN HUMAN DIPLOID KIDNEY CELL CULTURES. In Vitro Cellular & Developmental Biology - Animal. 40(3). 102–102. 2 indexed citations

Beqaj, Safedin, D. Post, & J. M. Ryan. (2003). SINGLE-NUCLEOTIDE POLYMORPHISM OF THE UROKINASE-PLASMINOGEN ACTIVATOR GENE DURING AGING AND TRANSFORMATION OF HUMAN DIPLOID KIDNEY CELL CULTURES. In Vitro Cellular & Developmental Biology - Animal. 39(8). 343–343. 1 indexed citations

Marcotte, Patrick A., et al.. (1992). The matrix metalloproteinase pump-1 catalyzes formation of low molecular weight (pro)urokinase in cultures of normal human kidney cells.. Journal of Biological Chemistry. 267(20). 13803–13806. 54 indexed citations

Deykin, Eva Y., et al.. (1988). Fathers of adopted children: A study of the impact of child surrender on birthfathers.. American Journal of Orthopsychiatry. 58(2). 240–248. 25 indexed citations

Ryan, J. M., Peter Nielsen, & Louisa Nelson. (1982). The effects of division rate‐limiting amounts of fetal bovine serum on the proliferation and aging of cultured chick cells. Journal of Cellular Physiology. 110(2). 175–182. 5 indexed citations

Ryan, J. M., et al.. (1981). A comparison of the proliferative and replicative life span kinetics of cell cultures derived from monozygotic twins. In Vitro Cellular & Developmental Biology - Plant. 17(1). 20–27. 8 indexed citations

Nielsen, Peter & J. M. Ryan. (1981). Cumulative population doublings as the determinant of chick cell lifespan in vitro. Journal of Cellular Physiology. 107(3). 371–378. 13 indexed citations

Ryan, J. M.. (1979). Effect of different fetal bovine serum concentrations on the replicative life span of cultured chick cells. In Vitro Cellular & Developmental Biology - Plant. 15(11). 895–899. 27 indexed citations

Ryan, J. M. & Vincent J. Cristofalo. (1979). Hydrocortisone-dependent alterations of transcriptional activity in WI38 cells. Experimental Cell Research. 122(1). 179–184. 5 indexed citations

10.

Ryan, J. M.. (1979). The kinetics of chick cell population aging in vitro. Journal of Cellular Physiology. 99(1). 67–77. 22 indexed citations

11.

Ryan, J. M. & Vincent J. Cristofalo. (1975). Chromatin template activity during aging in WI38 cells. Experimental Cell Research. 90(2). 456–458. 41 indexed citations

12.

Ryan, J. M.. (1975). Alterations in Chromatin Functions during Aging in Vitro. Advances in experimental medicine and biology. 53. 123–136. 6 indexed citations

13.

Ryan, J. M., et al.. (1975). The influence of culture medium volume on cell density and lifespan of human diploid fibroblasts. Experimental Cell Research. 91(2). 389–392. 64 indexed citations

14.

Ryan, J. M., Georg N. Duda, & Vincent J. Cristofalo. (1974). Error Accumulation and Aging in Human Diploid Cells. Journal of Gerontology. 29(6). 616–621. 23 indexed citations

15.

Ryan, J. M. & Vincent J. Cristofalo. (1972). Histone acetylation during aging of human cells in culture. Biochemical and Biophysical Research Communications. 48(4). 735–742. 57 indexed citations

16.

Ryan, J. M., et al.. (1971). Nucleohistone content during aging in tissue culture. In Vitro Cellular & Developmental Biology - Plant. 6(4). 269–273. 7 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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