JP Ryan

581 total citations
23 papers, 474 citations indexed

About

JP Ryan is a scholar working on Public Health, Environmental and Occupational Health, Molecular Biology and Gastroenterology. According to data from OpenAlex, JP Ryan has authored 23 papers receiving a total of 474 indexed citations (citations by other indexed papers that have themselves been cited), including 7 papers in Public Health, Environmental and Occupational Health, 6 papers in Molecular Biology and 6 papers in Gastroenterology. Recurrent topics in JP Ryan's work include Reproductive Biology and Fertility (7 papers), Gastrointestinal motility and disorders (5 papers) and Ion channel regulation and function (4 papers). JP Ryan is often cited by papers focused on Reproductive Biology and Fertility (7 papers), Gastrointestinal motility and disorders (5 papers) and Ion channel regulation and function (4 papers). JP Ryan collaborates with scholars based in United States, Australia and China. JP Ryan's co-authors include Henry P. Parkman, C. O’Neill, S. M. Junk, Melanie Walls, Roger Hart, Alaina J. Ammit, Henry N. Jabbour, G. Evans, W.M.C. Maxwell and Robert J. Washabau and has published in prestigious journals such as Gastroenterology, American Journal of Physiology-Endocrinology and Metabolism and American Journal of Physiology-Gastrointestinal and Liver Physiology.

In The Last Decade

JP Ryan

23 papers receiving 445 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
JP Ryan United States 12 187 107 97 96 70 23 474
Jacques Gonzalès France 12 277 1.5× 301 2.8× 48 0.5× 9 0.1× 119 1.7× 30 562
A. M. Akbar United States 13 81 0.4× 281 2.6× 12 0.1× 307 3.2× 72 1.0× 24 768
M. Elena Martinez United States 14 56 0.3× 54 0.5× 90 0.9× 5 0.1× 105 1.5× 35 738
Camilla Dorian Australia 9 90 0.5× 18 0.2× 33 0.3× 26 0.3× 49 0.7× 11 429
Yan Dai China 10 45 0.2× 18 0.2× 20 0.2× 42 0.4× 137 2.0× 43 400
Nobuyuki Koyama Japan 11 426 2.3× 313 2.9× 6 0.1× 58 0.6× 205 2.9× 24 625
Micheline Glauser Switzerland 7 29 0.2× 179 1.7× 17 0.2× 11 0.1× 59 0.8× 9 507
Göran Westlander Sweden 16 360 1.9× 422 3.9× 11 0.1× 12 0.1× 162 2.3× 27 812
C.S. Forster New Zealand 7 82 0.4× 47 0.4× 3 0.0× 102 1.1× 27 0.4× 12 425
Marie‐Pierre Primi Switzerland 12 173 0.9× 164 1.5× 83 0.9× 2 0.0× 116 1.7× 25 484

Countries citing papers authored by JP Ryan

Since Specialization
Citations

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

Fields of papers citing papers by JP Ryan

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of JP Ryan

This figure shows the co-authorship network connecting the top 25 collaborators of JP Ryan. A scholar is included among the top collaborators of JP 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 JP Ryan. JP Ryan 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.
Walls, Melanie, S. M. Junk, JP Ryan, & Roger Hart. (2012). IVF versus ICSI for the fertilization of in-vitro matured human oocytes. Reproductive BioMedicine Online. 25(6). 603–607. 43 indexed citations
2.
Ryan, JP, et al.. (2004). Effects of clonidine and tricyclic antidepressants on gastric smooth muscle contractility. Neurogastroenterology & Motility. 16(2). 143–153. 21 indexed citations
3.
O’Brien, Justine K., et al.. (2000). Comparison of In Vitro Maturation, In Vitro Fertilization, Metabolism and Ultrastructure of Oocytes from Prepubertal and Adult Pigs. Reproduction in Domestic Animals. 35(3-4). 101–107. 11 indexed citations
4.
Ryan, JP, et al.. (1998). Subtypes of muscarinic receptors regulating gallbladder cholinergic contractions. Gastroenterology. 114. A819–A819. 9 indexed citations
5.
Ryan, JP, et al.. (1998). Regional differences in myogenic and neurogenic properties of rabbit sphincter of Oddi smooth muscle. Gastroenterology. 114. A819–A819. 6 indexed citations
6.
Ryan, JP, et al.. (1996). Erythromycin inhibits rabbit pyloric smooth muscle through neuronal motilin receptors. Gastroenterology. 111(3). 682–690. 21 indexed citations
7.
Catt, James, et al.. (1995). Clinical intracytoplasmic sperm injection (ICSI) results from Royal North Shore Hospital. Reproduction Fertility and Development. 7(2). 255–261. 5 indexed citations
8.
Parkman, Henry P., et al.. (1995). Gastrokinetic effects of erythromycin: myogenic and neurogenic mechanisms of action in rabbit stomach. American Journal of Physiology-Gastrointestinal and Liver Physiology. 269(3). G418–G426. 66 indexed citations
9.
O’Neill, C., et al.. (1994). Injection of multiple sperm into the perivitelline space as a treatment of male infertility. Reproduction Fertility and Development. 6(1). 51–55. 1 indexed citations
10.
Washabau, Robert J., et al.. (1994). Role of myosin light-chain phosphorylation in guinea pig gallbladder smooth muscle contraction. American Journal of Physiology-Gastrointestinal and Liver Physiology. 266(3). G469–G474. 8 indexed citations
11.
Ryan, JP, et al.. (1992). Time of ovulation in merino ewes superovulated with PMSG and FSH-P. Reproduction Fertility and Development. 4(1). 91–97. 10 indexed citations
12.
O’Neill, C., et al.. (1992). Outcome of pregnancies resulting from a trial of supplementing human IVF culture media with platelet activating factor. Reproduction Fertility and Development. 4(1). 109–112. 25 indexed citations
13.
Ryan, JP, et al.. (1992). Metabolic and developmental responses of preimplantation embryos to platelet activating factor (PAF). Reproduction Fertility and Development. 4(4). 387–398. 20 indexed citations
14.
Renzetti, Louis M., et al.. (1992). Modulation of cat antral slow waves by ion substitution, Ca2+ and K+ channel blockade, and ACh stimulation. American Journal of Physiology-Gastrointestinal and Liver Physiology. 263(6). G880–G886. 2 indexed citations
15.
Jabbour, Henry N., JP Ryan, G. Evans, & W.M.C. Maxwell. (1991). Effects of season, GnRH administration and lupin supplementation on the ovarian and endocrine responses of merino ewes treated with PMSG and FSH-P to induce superovulation. Reproduction Fertility and Development. 3(6). 699–707. 30 indexed citations
16.
17.
Washabau, Robert J., et al.. (1991). Myosin light chain phosphorylation and contraction of guinea pig gallbladder smooth muscle. American Journal of Physiology-Gastrointestinal and Liver Physiology. 261(6). G952–G957. 10 indexed citations
18.
Renzetti, Louis M., et al.. (1991). Electrical slow-wave activity from the circular layer of cat terminal antrum. American Journal of Physiology-Gastrointestinal and Liver Physiology. 261(1). G78–G82. 4 indexed citations
19.
Ryan, JP, et al.. (1990). Antagonists of embryo-derived platelet-activating factor act by inhibiting the ability of the mouse embryo to implant. Reproduction. 88(1). 241–248. 41 indexed citations
20.
Ryan, JP, et al.. (1990). Development of gastric antral smooth muscle contractility in newborn rabbits. American Journal of Physiology-Gastrointestinal and Liver Physiology. 258(4). G571–G575. 16 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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