Peter J. O’Shaughnessy

6.9k total citations
129 papers, 5.4k citations indexed

About

Peter J. O’Shaughnessy is a scholar working on Reproductive Medicine, Molecular Biology and Endocrinology, Diabetes and Metabolism. According to data from OpenAlex, Peter J. O’Shaughnessy has authored 129 papers receiving a total of 5.4k indexed citations (citations by other indexed papers that have themselves been cited), including 58 papers in Reproductive Medicine, 57 papers in Molecular Biology and 41 papers in Endocrinology, Diabetes and Metabolism. Recurrent topics in Peter J. O’Shaughnessy's work include Sperm and Testicular Function (55 papers), Hormonal and reproductive studies (38 papers) and Sexual Differentiation and Disorders (37 papers). Peter J. O’Shaughnessy is often cited by papers focused on Sperm and Testicular Function (55 papers), Hormonal and reproductive studies (38 papers) and Sexual Differentiation and Disorders (37 papers). Peter J. O’Shaughnessy collaborates with scholars based in United Kingdom, United States and Australia. Peter J. O’Shaughnessy's co-authors include P. J. Baker, Paul Fowler, Ana Monteiro, Siladitya Bhattacharya, H. M. Charlton, Keith Dudley, Guido Verhoeven, Mark Johnston, Marianne Hope Abel and Lee B. Smith and has published in prestigious journals such as Journal of Biological Chemistry, PLoS ONE and Development.

In The Last Decade

Peter J. O’Shaughnessy

128 papers receiving 5.4k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Peter J. O’Shaughnessy United Kingdom 44 2.5k 2.0k 1.8k 1.4k 1000 129 5.4k
Nigel G. Wreford Australia 40 2.4k 1.0× 1.8k 0.9× 1.4k 0.8× 1.6k 1.2× 979 1.0× 76 5.4k
Liza O’Donnell Australia 44 3.4k 1.4× 1.8k 0.9× 2.2k 1.2× 1.9k 1.4× 1.2k 1.2× 104 6.4k
Luiz R. França Brazil 46 3.8k 1.5× 1.6k 0.8× 3.0k 1.7× 1.8k 1.3× 492 0.5× 99 7.0k
Lee B. Smith United Kingdom 40 2.0k 0.8× 2.3k 1.2× 1.5k 0.8× 1.1k 0.8× 748 0.7× 115 5.3k
Chris McKinnell United Kingdom 39 2.3k 0.9× 1.6k 0.8× 1.3k 0.7× 1.1k 0.8× 594 0.6× 59 5.0k
Barry R. Zirkin United States 57 4.5k 1.8× 2.8k 1.4× 1.7k 1.0× 1.9k 1.4× 2.5k 2.5× 163 9.4k
Margaret E. E. Jones Australia 43 1.6k 0.6× 1.6k 0.8× 2.9k 1.6× 1.0k 0.7× 1.5k 1.5× 74 6.7k
Larry Johnson United States 42 2.7k 1.1× 1.5k 0.8× 1.0k 0.6× 1.6k 1.2× 607 0.6× 117 5.1k
Eugenia H. Goulding United States 29 2.8k 1.1× 2.3k 1.2× 2.2k 1.2× 2.0k 1.5× 386 0.4× 52 6.3k
David Bunick United States 33 1.9k 0.8× 1.5k 0.8× 2.3k 1.3× 795 0.6× 948 0.9× 72 4.7k

Countries citing papers authored by Peter J. O’Shaughnessy

Since Specialization
Citations

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

Fields of papers citing papers by Peter J. O’Shaughnessy

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Peter J. O’Shaughnessy. 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 Peter J. O’Shaughnessy. The network helps show where Peter J. O’Shaughnessy may publish in the future.

Co-authorship network of co-authors of Peter J. O’Shaughnessy

This figure shows the co-authorship network connecting the top 25 collaborators of Peter J. O’Shaughnessy. A scholar is included among the top collaborators of Peter J. O’Shaughnessy 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 Peter J. O’Shaughnessy. Peter J. O’Shaughnessy 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.
Nielsen, John E., Jovana Kaludjerovic, Peter J. O’Shaughnessy, et al.. (2025). Changes in local mineral homeostasis facilitate the formation of benign and malignant testicular microcalcifications. eLife. 13.
2.
Nielsen, John E., Jovana Kaludjerovic, Peter J. O’Shaughnessy, et al.. (2024). Changes in local mineral homeostasis facilitate the formation of benign and malignant testicular microcalcifications. eLife. 13. 2 indexed citations
3.
Hyötyläinen, Tuulia, Aidan McGlinchey, Samira Salihović, et al.. (2024). In utero exposures to perfluoroalkyl substances and the human fetal liver metabolome in Scotland: a cross-sectional study. The Lancet Planetary Health. 8(1). e5–e17. 17 indexed citations
4.
O’Shaughnessy, Peter J., Jean‐Philippe Antignac, Bruno Le Bizec, et al.. (2019). Alternative (backdoor) androgen production and masculinization in the human fetus. PLoS Biology. 17(2). e3000002–e3000002. 108 indexed citations
5.
Rebourcet, Diane, Ana Monteiro, Lyndsey Cruickshanks, et al.. (2019). Relationship of transcriptional markers to Leydig cell number in the mouse testis. PLoS ONE. 14(7). e0219524–e0219524. 5 indexed citations
6.
Filis, Panagiotis, et al.. (2019). Nutrient transporter expression in both the placenta and fetal liver are affected by maternal smoking. Placenta. 78. 10–17. 15 indexed citations
7.
Drake, Amanda J., Peter J. O’Shaughnessy, Siladitya Bhattacharya, et al.. (2015). In utero exposure to cigarette chemicals induces sex-specific disruption of one-carbon metabolism and DNA methylation in the human fetal liver. BMC Medicine. 13(1). 18–18. 57 indexed citations
8.
Fowler, Paul, Richard A. Anderson, Philippa T. K. Saunders, et al.. (2011). Development of Steroid Signaling Pathways during Primordial Follicle Formation in the Human Fetal Ovary. The Journal of Clinical Endocrinology & Metabolism. 96(6). 1754–1762. 88 indexed citations
9.
O’Shaughnessy, Peter J., Ana Monteiro, Siladitya Bhattacharya, & Paul Fowler. (2011). Maternal Smoking and Fetal Sex Significantly Affect Metabolic Enzyme Expression in the Human Fetal Liver. The Journal of Clinical Endocrinology & Metabolism. 96(9). 2851–2860. 56 indexed citations
10.
Abel, Marianne Hope, P. J. Baker, H. M. Charlton, et al.. (2008). Spermatogenesis and Sertoli Cell Activity in Mice Lacking Sertoli Cell Receptors for Follicle-Stimulating Hormone and Androgen. Endocrinology. 149(7). 3279–3285. 111 indexed citations
11.
O’Shaughnessy, Peter J., Ian D. Morris, & PJ Baker. (2008). Leydig cell re-generation and expression of cell signaling molecules in the germ cell-free testis. Reproduction. 135(6). 851–858. 44 indexed citations
12.
13.
O’Shaughnessy, Peter J., et al.. (2003). Identification of Developmentally Regulated Genes in the Somatic Cells of the Mouse Testis Using Serial Analysis of Gene Expression1. Biology of Reproduction. 69(3). 797–808. 41 indexed citations
14.
O’Shaughnessy, Peter J., et al.. (2002). Changes in Leydig Cell Gene Expression During Development in the Mouse1. Biology of Reproduction. 66(4). 966–975. 185 indexed citations
15.
O’Shaughnessy, Peter J., et al.. (2002). Failure of normal adult Leydig cell development in androgen-receptor-deficient mice. Journal of Cell Science. 115(17). 3491–3496. 114 indexed citations
16.
17.
Majdič, Gregor, Richard M. Sharpe, Peter J. O’Shaughnessy, & Philippa T. K. Saunders. (1996). Expression of cytochrome P450 17alpha-hydroxylase/C17-20 lyase in the fetal rat testis is reduced by maternal exposure to exogenous estrogens.. Endocrinology. 137(3). 1063–1070. 133 indexed citations
18.
Mannan, M. A., et al.. (1995). Development of cytochrome P450 aromatase mRNA levels and enzyme activity in ovaries of normal and hypogonadal (hpg) mice. Journal of Molecular Endocrinology. 14(3). 295–301. 28 indexed citations
19.
20.
Brown, Pamela & Peter J. O’Shaughnessy. (1980). Short-term effect of cyproterone acetate on testicular FSH binding in immature rats. Reproduction. 60(2). 477–480. 3 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 Nigel G. Wreford Breakdown of academic impact, for papers by Liza O’Donnell Breakdown of academic impact, for papers by Luiz R. França Breakdown of academic impact, for papers by Lee B. Smith Breakdown of academic impact, for papers by Chris McKinnell Breakdown of academic impact, for papers by Barry R. Zirkin Breakdown of academic impact, for papers by Margaret E. E. Jones Breakdown of academic impact, for papers by Larry Johnson Breakdown of academic impact, for papers by Eugenia H. Goulding Breakdown of academic impact, for papers by David Bunick
Rankless by CCL
2026