Ralph L. Cooper

8.8k citations

114 papers · 6.6k indexed · 2 hit papers · h-index 43

Impact in

Health, Toxicology and Mutagenesis top 0.1%
- Effects and risks of endocrine disrupting chemicals
- Toxic Organic Pollutants Impact
- Environmental Toxicology and Ecotoxicology
Reproductive Medicine top 0.5%

Papers in

Behavioral Neuroscience 13
- Stress Responses and Cortisol 13
Reproductive Medicine 29
- Ovarian function and disorders 16
- Hypothalamic control of reproductive hormones 16

Co-authors: Jerome M. Goldman Tammy E. Stoker L. Earl Gray Ashley S. Murr Joseph Ostby Christy Lambright Robert J. Kavlock Susan Laws
Journals: Reproductive Toxicology (12 papers)Toxicological Sciences (10 papers)Toxicology and Applied Pharmacology (7 papers)Toxicology and Industrial Health (6 papers)Toxicology (6 papers)
Partner nations: United States United Kingdom Netherlands

In The Last Decade

Ralph L. Cooper

113 papers receiving 6.3k citations

Hit Papers

align trajectories log scale

The rodent estrous cycle: characterization of vaginal cytology and its utility in toxicological studies 2007 · 607 citations

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if any of the following hold:

it has ≥500 total citations;
it reaches ≥1.5× the top-1% citation threshold for papers in the same subfield and year (the threshold is the minimum needed to enter the top 1%, not the average within it);
it reaches the top citation threshold in at least one of its specific research topics.

2007 Birth Defects Research Part B Developmental and Reproductive Toxicology
1999 Toxicology and Industrial Health

Peers

Countries citing papers authored by Ralph L. Cooper

Since Specialization

Citations

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

Fields of papers citing papers by Ralph L. Cooper

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ralph L. Cooper. 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 Ralph L. Cooper. The network helps show where Ralph L. Cooper may publish in the future.

Co-authors

The 25 scholars most cited alongside Ralph L. Cooper, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with Ralph L. Cooper Line = papers co-authored together Ralph L. Cooper links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

#	Work
1	Effects of atrazine on the HPG and HPA axes and steroidogenic pathways in females: relevance to reproductive function and breast, ovarian and uterine cancer Frontiers in Toxicology ·Ralph L. Cooper, James Simpkins, Charles B. Breckenridge	2026	1
2	Novel molecular events associated with altered steroidogenesis induced by exposure to atrazine in the intact and castrate male rat Reproductive Toxicology ·M. Hjelm, Gary Klinefelter, Ralph L. Cooper, Witold Winnik, Adam Swank, Saro Jayaraman, Juan D. Suarez, Deborah S. Best, Susan Laws	2014	19
3	Gestational atrazine exposure: Effects on male reproductive development and metabolite distribution in the dam, fetus, and neonate Reproductive Toxicology ·Tyna Connor, Michael G. Narotsky, Deborah S. Best, Tammy E. Stoker, Lori K. Davis, Jerome M. Goldman, В С Максимов, Gary Klinefelter, Alaa Kamel, Yaorong Qian, Lynda V. Podhorniak, Ralph L. Cooper	2011	34
4	The effects of prenatal exposure to atrazine on pubertal and postnatal reproductive indices in the female rat Reproductive Toxicology ·Lori K. Davis, Ashley S. Murr, Deborah S. Best, Tyna Connor, Leah M. Zorrilla, Michael G. Narotsky, Tammy E. Stoker, Jerome M. Goldman, Ralph L. Cooper	2011	44
5	The OECD validation program of the H295R steroidogenesis assay: Phase 3. Final inter-laboratory validation study Environmental Science and Pollution Research ·Markus Hecker, Henner Hollert, Ralph L. Cooper, Anne Marie Vinggaard, Yumi Akahori, Margaret B. Murphy, Christine Nellemann, Eric Higley, John L. Newsted, John W. Laskey, Angela R. Buckalew, Stefanie Grund, Sibylle Maletz, John P. Giesy, S S Camargo	2010	72
6	Reproductive effects of maternal and pre-weaning undernutrition in rat offspring: Age at puberty, onset of female reproductive senescence and intergenerational pup growth and viability Reproductive Toxicology ·Neil Chernoff, J. Garancher, Tammy E. Stoker, Ralph L. Cooper, Mary E. Gilbert, E. H. Rogers	2009	25
7	A Tiered Approach to Life Stages Testing for Agricultural Chemical Safety Assessment Critical Reviews in Toxicology ·Ralph L. Cooper, James C. Lamb, Sue Barlow, Karin S. Bentley, A.M. Brady, Nancy G. Doerrer, David L. Eisenbrandt, Penelope A. Fenner-Crisp, Ronald N. Hines, Rosie Cleary-McHarg, Carole A. Kimmel, H.B.W.M. Koëter, Abby A. Li, Susan L. Makris, Larry P. Sheets, G.J.A. Speijers, K. Toh	2006	94
8	Reproductive functions and hypothalamic catecholamines in response to the soil fumigant metam sodium: Adaptations to extended exposures Neurotoxicology and Teratology ·Jerome M. Goldman, Ralph L. Cooper, Ashley S. Murr	2006	4
9	Nature of the Binding Interaction for 50 Structurally Diverse Chemicals with Rat Estrogen Receptors Toxicological Sciences ·Susan Laws, T S Stein, Ralph L. Cooper, J. Charles Eldridge	2006	37
10	In vivo and in vitro anti-androgenic effects of DE-71, a commercial polybrominated diphenyl ether (PBDE) mixture Toxicology and Applied Pharmacology ·Tammy E. Stoker, Ralph L. Cooper, Christy Lambright, Vickie S. Wilson, Johnathan Furr, L. Earl Gray	2005	209
11	Neonatal Low- and High-Dose Exposure to Estradiol Benzoate in the Male Rat: I. Effects on the Prostate Gland1 Biology of Reproduction ·Oliver Putz, Chuyu Liu, Steve Kim, Gerald A. LeBlanc, Ralph L. Cooper, Gail S. Prins	2001	60
12	Atrazine Disrupts the Hypothalamic Control of Pituitary-Ovarian Function Toxicological Sciences ·Ralph L. Cooper	2000	276
13	Effects of Castration and Chronic Steroid Treatments on Hypothalamic Gonadotropin-Releasing Hormone Content and Pituitary Gonadotropins in Male Wild-Type and Estrogen Receptor-α Knockout Mice Endocrinology ·Jonathan Lindzey, William C. Wetsel, John F. Couse, Tammy E. Stoker, Ralph L. Cooper, Kenneth S. Korach	1998	147
14	Environmental endocrine disruption: an effects assessment and analysis. Environmental Health Perspectives ·Thomas M. Crisp, E. D. Clegg, Ralph L. Cooper, William P. Wood, David G. Anderson, Karl P. Baetcke, S. Mshima, JacquesCrépeau, Rodrigue Armel Muvunyi, Gabriel Santos de Castro, Leslie W. Touart, Maurice Zeeman, Yesha Patel	1998	450
15	Influence of the Formamidine Pesticide Chlordimeform on Ovulation in the Female Hamster: Dissociable Shifts in the Luteinizing Hormone Surge and Oocyte Release Toxicology and Applied Pharmacology ·Jerome M. Goldman, Tammy E. Stoker, Sally D. Perreault, Ralph L. Cooper, Р. А. Янтимирова	1993	6
16	Suppression of the Luteinizing Hormone Surge by Chlordimeform in Ovariectomized, Steroid‐Primed Female Rats Pharmacology & Toxicology ·Jerome M. Goldman, Ralph L. Cooper, Tammy L. Edwards, Georgia L. Rehnberg, W. Keith McElroy, Joy F. Hein	1991	23
17	Effects of the benomyl metabolite, carbendazim, on the hypothalamic-pituitary reproductive axis in the male rat Toxicology ·William Mallmann, Georgia L. Rehnberg, Ralph L. Cooper, L. Earl Gray, Joy F. Hein, W. Keith McElroy	1989	34
18	Lack of effects from 2000‐Hz magnetic fields on mammary adenocarcinoma and reproductive hormones in rats Bioelectromagnetics ·Stephen B. Baumann, Ralph L. Cooper, Ezra Berman, Dennis E. House, William T. Joines	1989	7
19	The development of a protocol to assess reproductive effects of toxicants in the rat Reproductive Toxicology ·L. Earl Gray, Joseph Ostby, Luis Dinis, Janet M. Ferrell, Georgia L. Rehnberg, Ralph E. Linder, Ralph L. Cooper, Jerome M. Goldman, John W. Laskey	1988	45
20	Pharmacodynamics and Pharmacokinetics of Ethanol, Diazepam and Pentobarbital in Young and Aged Rats Pharmacology & Toxicology ·Sally K. Guthrie, Ralph L. Cooper, Ronald G. Thurman, Markku Linnoila	1987	20

About Ralph L. Cooper

Ralph L. Cooper is a scholar working on Behavioral Neuroscience, Reproductive Medicine, Health, Toxicology and Mutagenesis, Pollution and Endocrinology, Diabetes and Metabolism, having authored 114 papers that have together received 6.6k indexed citations. Recurring topics across this work include Effects and risks of endocrine disrupting chemicals (33 papers), Estrogen and related hormone effects (24 papers), Ovarian function and disorders (16 papers), Hypothalamic control of reproductive hormones (16 papers), Pesticide and Herbicide Environmental Studies (14 papers), Stress Responses and Cortisol (13 papers), Neuroendocrine regulation and behavior (13 papers) and Hormonal and reproductive studies (12 papers). The work is most often cited by research in Health, Toxicology and Mutagenesis (3.3k citations), Reproductive Medicine (958 citations), Pollution (1.0k citations), Behavioral Neuroscience (316 citations) and Physiology (323 citations). Ralph L. Cooper has collaborated with scholars based in United States, United Kingdom and Netherlands. Frequent co-authors include Jerome M. Goldman, Tammy E. Stoker, L. Earl Gray, Ashley S. Murr, Joseph Ostby, Christy Lambright, Robert J. Kavlock, Susan Laws, Matthew E. Price and W. Keith McElroy. Their work appears in journals such as Reproductive Toxicology, Toxicological Sciences, Toxicology and Applied Pharmacology, Toxicology and Industrial Health and Toxicology.

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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