Jorma Toppari

1.6k total citations
21 papers, 1.3k citations indexed

About

Jorma Toppari is a scholar working on Reproductive Medicine, Molecular Biology and Public Health, Environmental and Occupational Health. According to data from OpenAlex, Jorma Toppari has authored 21 papers receiving a total of 1.3k indexed citations (citations by other indexed papers that have themselves been cited), including 11 papers in Reproductive Medicine, 9 papers in Molecular Biology and 7 papers in Public Health, Environmental and Occupational Health. Recurrent topics in Jorma Toppari's work include Sperm and Testicular Function (8 papers), Reproductive Biology and Fertility (5 papers) and Sexual Differentiation and Disorders (5 papers). Jorma Toppari is often cited by papers focused on Sperm and Testicular Function (8 papers), Reproductive Biology and Fertility (5 papers) and Sexual Differentiation and Disorders (5 papers). Jorma Toppari collaborates with scholars based in Finland, Denmark and United Kingdom. Jorma Toppari's co-authors include Marko Kaleva, Katharina M. Main, Ilpo Huhtaniemi, N. E. Skakkeb�k, NE Skakkebæk, Niels Keiding, Tina Kold Jensen, N E Skakkebæk, Claudia Mau and M Reunanen and has published in prestigious journals such as The Lancet, Developmental Biology and Clinical Chemistry.

In The Last Decade

Jorma Toppari

19 papers receiving 1.2k citations

Peers

Jorma Toppari
NE Skakkebæk Denmark
Inge A. Olesen Denmark
Matti Vierula Finland
Diane Rebourcet United Kingdom
Ching-hang Wong United States
Sheila Macpherson United Kingdom
C. Sultan France
Anne‐Maarit Haavisto Finland
Mirja Nurmio Finland
Shiari Nozawa Japan
NE Skakkebæk Denmark
Jorma Toppari
Citations per year, relative to Jorma Toppari Jorma Toppari (= 1×) peers NE Skakkebæk

Countries citing papers authored by Jorma Toppari

Since Specialization
Citations

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

Fields of papers citing papers by Jorma Toppari

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Jorma Toppari

This figure shows the co-authorship network connecting the top 25 collaborators of Jorma Toppari. A scholar is included among the top collaborators of Jorma Toppari 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 Jorma Toppari. Jorma Toppari 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.
Rahman, Nafis A., Marcin Chruściel, Donata Ponikwicka‐Tyszko, et al.. (2025). Targeted destruction of follicle stimulating hormone receptor-positive cancer cells in vitro and in vivo by a lytic peptide Phor21-FSHβ conjugate. Molecular Medicine. 31(1). 224–224.
2.
Varimo, Tero, Mitja Lääperi, Hanna Huopio, et al.. (2025). Puberty‐Promoting Treatment and Psychosocial Well‐Being in Boys With Constitutional Delay of Puberty: A Randomized Controlled Trial. Clinical Endocrinology. 104(2). 139–146.
3.
Varimo, Tero, Hanna Huopio, Sirpa Tenhola, et al.. (2019). Anti-Müllerian hormone and letrozole levels in boys with constitutional delay of growth and puberty treated with letrozole or testosterone. Human Reproduction. 35(2). 257–264. 11 indexed citations
4.
Joensen, Ulla Nordström, Elisabeth Carlsen, Juris Ērenpreiss, et al.. (2016). 176 Varicocele is negatively associated with semen quality and hormone levels: A study of 7067 men from six European countries. European Urology Supplements. 15(3). e176–e176. 1 indexed citations
5.
Rantakokko, Panu, Katharina M. Main, Christine Wohlfahrt‐Veje, et al.. (2013). Association of placenta organotin concentrations with congenital cryptorchidism and reproductive hormone levels in 280 newborn boys from Denmark and Finland. Human Reproduction. 28(6). 1647–1660. 46 indexed citations
6.
Bois, Camille, Christelle Delalande, Mirja Nurmio, et al.. (2010). Age- and cell-related gene expression of aromatase and estrogen receptors in the rat testis. Journal of Molecular Endocrinology. 45(3). 147–159. 57 indexed citations
7.
Rivero‐Müller, Adolfo, et al.. (2008). Targeted therapy for adrenocortical tumors in transgenic mice through their LH receptor by Hecate-human chorionic gonadotropin   conjugate. Endocrine Related Cancer. 15(2). 635–648. 11 indexed citations
8.
Boisen, Kirsten A., Marko Kaleva, Katharina M. Main, et al.. (2004). Difference in prevalence of congenital cryptorchidism in infants between two Nordic countries. The Lancet. 363(9417). 1264–1269. 383 indexed citations
9.
Wang, Yibin, et al.. (2004). Tumor necrosis factor-alpha (TNF-alpha) promotes cell survival during spermatogenesis, and this effect can be blocked by infliximab, a TNF-alpha antagonist. European Journal of Endocrinology. 151(5). 629–640. 66 indexed citations
10.
Meyts, Ewa Rajpert‐De, et al.. (2003). Testicular Neoplasia in Childhood and Adolescence. Endocrine development. 5. 110–123. 4 indexed citations
11.
Main, Katharina M., et al.. (2002). Early postnatal treatment of hypogonadotropic hypogonadism with recombinant human FSH and LH. European Journal of Endocrinology. 146(1). 75–79. 82 indexed citations
12.
Jensen, Tina Kold, Rémy Slama, B. Ducot, et al.. (2001). Regional differences in waiting time to pregnancy among fertile couples from four European cities. Human Reproduction. 16(12). 2697–2704. 75 indexed citations
13.
Horte, Antero, Matti Vierula, Jorma Toppari, & Jaakko Suominen. (2001). Reassessment of sperm morphology of archival semen smears from the period 1980–1994. International Journal of Andrology. 24(2). 120–124. 12 indexed citations
14.
Yan, Wei, et al.. (2001). The expression and regulation of Bcl-2-related ovarian killer (Bok) mRNA in the developing and adult rat testis. European Journal of Endocrinology. 145(6). 771–778. 20 indexed citations
15.
16.
Toppari, Jorma & Marko Kaleva. (1999). Maldescendus testis. Hormone Research in Paediatrics. 51(6). 261–269. 64 indexed citations
17.
Kallio, Jaana, et al.. (1999). Timing of Peak Serum Cortisol Values in Preterm Infants in Low-Dose and the Standard ACTH Tests. Pediatric Research. 45(3). 367–369. 17 indexed citations
18.
Toppari, Jorma & N. E. Skakkeb�k. (1998). Sexual differentiation and environmental endocrine disrupters. Baillière s Clinical Endocrinology and Metabolism. 12(1). 143–156. 107 indexed citations
19.
Rannikko, Antti, et al.. (1996). Stage-specific expression of the FSH receptor gene in the prepubertal and adult rat seminiferous epithelium. Journal of Endocrinology. 151(1). 29–35. 33 indexed citations
20.
Huhtaniemi, Ilpo & Jorma Toppari. (1995). Endocrine, Paracrine and Autocrine Regulation of Testicular Steroidogenesis. Advances in experimental medicine and biology. 377. 33–54. 65 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 NE Skakkebæk Breakdown of academic impact, for papers by Inge A. Olesen Breakdown of academic impact, for papers by Matti Vierula Breakdown of academic impact, for papers by Diane Rebourcet Breakdown of academic impact, for papers by Ching-hang Wong Breakdown of academic impact, for papers by Sheila Macpherson Breakdown of academic impact, for papers by C. Sultan Breakdown of academic impact, for papers by Anne‐Maarit Haavisto Breakdown of academic impact, for papers by Mirja Nurmio Breakdown of academic impact, for papers by Shiari Nozawa
Rankless by CCL
2026