Projects
EMSG36: Further Development and Scientific Evaluation of Appropriate Methods for Identification and Characterisation of Toxic Effects of Hormonally Active Substances on Reproduction in Birds as Part of Multi-Generation-Studies
The effects of so-called ”endocrine disruptors” (EDs), i.e. hormone-like acting substances of natural or anthropogenic origin or compounds disturbing the endocrine system by other mechanisms, on reproduction are subject to extensive discussion worldwide. For better identification of such effects, regulatory […]
Read more
EMSG29: Examination of Bull Sperm as a Sentinel Species for Male Reproductive Health
Discussions over possible declines in male sperm counts are hampered by the lack of human data. Data is readily available, however, on sperm counts from other mammals, and this can provide helpful insight to questions regarding male fertility rates. This […]
Read more
EMSG17: Identification of Biomedical Endpoints of Oestrogen Action in the Male Rat With Possible Confirmation in Primate Model and in Man
The objective of the project was to identify biochemical endpoints of oestrogen action in the male rat during foetal and neonatal development, which may have potential for monitoring the level of "oestrogen" exposure of individual animals, either in infancy or […]
Read more
EMSG19: Chemicals and Pregnancy Study-UK (CHAPS-UK): Multicentre Study of Occupational Exposure to Chemicals and Male Fertility
The research institutes will study 6000 men attending any of the 10 fertility clinics in the UK over a period of 2 years. They will be classified as either fertile or infertile on the basis of sperm parameters. Standardised methods […]
Read more
EMSG20: Environmental Factors and Male Reproductive Functions. A Cohort Study of the Incidence of Cryptorchidism and Hypospadia in 5000 Newborn Boys in the Rotterdam Area
This is a study of 10,000 men, their (pregnant) partners and their new-born children. Information will be collected on the incidence of urogenital disorders such as Cryptorchidism, Hypospadia, lifestyle, working conditions of the male partner and time to pregnancy. The […]
Read more
EMSG25: Comparative Developmental and Reproductive Toxicity of Endocrine Disrupting Chemicals in Vivo Rat Model
The study will investigate sex steroid-regulated gene expression in two sexually dimorphic brain regions i.e. the preoptic region, the bed nucleus of stria terminalis and the ventromedial hypothalamic nucleus, which are part of the neural network controlling sexually dimorphic behaviours […]
Read more
RTD-INSERM: Neuroendocrine Effects of Endocrine Active Chemicals (EAC): a Literature Review
The mammalian brain and pituitary gland (hypophysis) are clearly target organs for steroid and thyroid hormone action. There is also evidence that prenatal (in utero) or neonatal (young) exposure to high concentrations of some chemicals can affect the developing nervous […]
Read more
EMSG24: Environmental Oestrogens and the Neuro-Endocrine Regulation of Reproduction of Fish
The aim of the study was to study neuro-endocrine regulation, particularly the brain-pituitary-gonad (BPG) axis, 3 freshwater fish species (catfish, trout and tilapia) exposed to 4-nonyl phenol (4-NP) or oestradiol (EE). The research also sought to establish an immortalised gonadotroph […]
Read more
EMSG7: Screening Test in Fish – Aquatic Toxicity Project A
An in vivo screening test for oestrogenicity was developed jointly by three laboratories by measuring vitellogenin in fathead minnows after up to 21 days exposure. This method will be further refined by determination of (anti-)androgens and aromatase inhibitors in the […]
Read more
EMSG34A: Validation of the OECD protocol for the surgical castrate rat (Hershberger) assay
The objective of this project was the evaluation and validation of the Hershberger assay as part of the official OECD validation of this test method. This test, developed under the EDTA programme, is designed to help detect chemicals interfering with […]
Read more