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Dive into the research topics where Jorma Toppari is active.

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Featured researches published by Jorma Toppari.


Archive | 1994

Local Growth Factor Effects During Spermatogenesis

Martti Parvinen; Harri Hakovirta; Antti Kaipia; Tarja-Leena Penttilä; Jorma Toppari; Viqar Syed; Bernard Jégou; Håkan Persson; Aida Wahab; Olof Söder

In the mammalian seminiferous epithelium, the cell associations follow each other in a wavelike fashion. The cell associations are characterized by constant cell composition and are identified usually by changing morphology of the acrosome system and of the nucleus in the early spermatids. Cells at DNA synthesis—that is, the six different classes of spermatogonia and preleptotene spermatocytes—are also accurately localized in defined stages of the cycle of the seminiferous epithelium.


Environmental Health Perspectives | 1996

Male reproductive health and environmental xenoestrogens.

Jorma Toppari; John Chr. Larsen; P. Christiansen; A. Giwercman; Philippe Grandjean; L.J. Guillette; Bernard Jégou; Tina Kold Jensen; P. Jouannet; Niels Keiding; Henrik Leffers; John A. McLachlan; O. Meyer; Jørn Müller; E Rajpert-De Meyts; Thomas H. Scheike; Richard M. Sharpe; John P. Sumpter; Niels E. Skakkebæk


Journal of Cell Science | 2000

Source, catabolism and role of the tetrapeptide N-acetyl-ser-asp-lys-Pro within the testis

Jean-Philippe Stéphan; Nathalie Melaine; Eric Ézan; Harri Hakovirta; Simon Maddocks; Jorma Toppari; Danielle-Hélène Garnier; Joanna Wdzieczak-Bakala; Bernard Jégou


Archive | 2012

Possible developmental early effects of endocrine disrupters on child health

Jorma Toppari; Annika Adamsson; Malene Boas; Anders Juul; Katharina M. Main; Niels Erik Skakkebæk; H. Virtanen


Archive | 2013

Testicular Cancer Pathogenesis, Diagnosis and Endocrine Aspects

Ewa Rajpert-De Meyts; Niels E Skakkebaek; Jorma Toppari


Archive | 2011

Multi-System Endocrine Disruption

Jean-Pierre Bourguignon; Bernard Jégou; Bernard Kerdelhué; Jorma Toppari; Yves Christen


WOS | 2018

Association of In Utero Persistent Organic Pollutant Exposure With Placental Thyroid Hormones

Zhong-Min Li; David Hernandez-Moreno; Katharina M Main; Niels Erik Skakkebæk; Hannu Kiviranta; Jorma Toppari; Ulla Feldt-Rasmussen; Heqing Shen; Karl-Werner Schramm; Meri De Angelis


Archive | 2018

Association of Endocrine Disrupting Chemicals With Male Reproductive Health

Helena E. Virtanen; Katharina M Main; Jorma Toppari


20th European Congress of Endocrinology | 2018

A validated LC-Q-TOF-MS method for quantitative analysis of thyroxine and metabolites in placenta

Zhong-Min Li; Florian Giesert; Daniela Vogt-Weisenhorn; Katharina M Main; Niels E Skakkebaek; Hannu Kiviranta; Jorma Toppari; Ulla Feldt-Rasmussen; Heqing Shen; Karl-Werner Schramm; Meri De Angelis


20th European Congress of Endocrinology | 2018

Association of placental thyroid hormone concentrations with congenital cryptorchidism

Zhong-Min Li; David Hernandez-Moreno; Katharina M Main; Niels Erik Skakkebæk; Hannu Kiviranta; Jorma Toppari; Ulla Feldt-Rasmussen; Heqing Shen; Karl-Werner Schramm; Angelis Meri De

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Hannu Kiviranta

National Institute for Health and Welfare

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