In 1998, the OECD initiated a high-priority project aimed at revising existing test guidelines and developing new test guidelines for screening of potential endocrine disruptors. In 2011, OECD 443 was adopted, and in 2015 OECD 421 and OECD 422 were updated with endocrine disruptor relevant endpoints. A feasibility study for the enhancement of OECD 414 with endocrine disruptor relevant endpoints is currently ongoing. The addition of these endpoints is considered crucial for gaining more information on endocrine disruptor potency of tested chemicals, however it should be noted that these additions have a major impact on the study designs and give rise to several practical challenges. The aim of this review is to discuss important aspects of these challenging study designs and to share our knowledge on their implementation in our laboratory. Together, this review can be used as guidance for other laboratories, study monitors and registration officers.
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http://dx.doi.org/10.1016/j.reprotox.2016.04.002 | DOI Listing |
Environ Epidemiol
February 2025
Department of Public Health Sciences, University of Rochester Medical Center, Rochester, New York.
Background: Sex steroid hormones are critical for maintaining pregnancy and optimal fetal development. Air pollutants are potential endocrine disruptors that may disturb sex steroidogenesis during pregnancy, potentially leading to adverse health outcomes.
Methods: In the Environmental influences on Child Health Outcomes Understanding Pregnancy Signals and Infant Development pregnancy cohort (Rochester, NY), sex steroid concentrations were collected at study visits in early-, mid-, and late-pregnancy in 299 participants.
Clin Epigenetics
January 2025
Biotechnology of Animal and Human Reproduction (TechnoSperm), Institute of Food and Agricultural Technology, University of Girona, 17003, Girona, Spain.
Recent studies support the influence of paternal lifestyle and diet before conception on the health of the offspring via epigenetic inheritance through sperm DNA methylation, histone modification, and small non-coding RNA (sncRNA) expression and regulation. Smoking may induce DNA hypermethylation in genes related to anti-oxidation and insulin resistance. Paternal diet and obesity are associated with greater risks of metabolic dysfunction in offspring via epigenetic alterations in the sperm.
View Article and Find Full Text PDFObstet Gynecol Surv
January 2025
Professor, Department of Biochemistry and Molecular Biology-A, University of Murcia, Murcia, Spain.
Importance: Infertility affects around 180 million people in the world and can be influenced by a number of nutritional factors.
Objective: The idea of a pretreatment optimization including beneficial weight loss, adequate physical activity, and good lifestyle habits could enhance fertility for many couples who want to conceive a baby.
Results: There are different aspects related to nutrition, such as obesity (affecting 23%-30% of reproductive-aged women), dietary patterns (type of diet, good or bad habits, and physical activity), nutrients (vitamins or minerals), hormones (adipokines, among others), and endocrine-disrupting chemicals (phytoestrogens and bisphenol A, among others) that have a clear impact on women's fertility.
BMC Genomics
January 2025
Laboratory for Marine Ecology and Environmental Science and Technology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao, 266061, China.
Background: Tris (2-chloroethyl) phosphate (TCEP), a widely used flame retardant, is widespread in the environment and potentially harmful to organisms. However, the specific mechanisms of TCEP-induced neurological and reproductive toxicity in fish are largely unknown. Turbot (Scophthalmus maximus) is cultivated on a large scale, and the emergence of pollutants with endocrine disrupting effects seriously affects its economic benefits.
View Article and Find Full Text PDFMar Pollut Bull
January 2025
School of Physical and Chemical Sciences, University of Canterbury, Christchurch 8140, New Zealand.
The presence of twenty-four emerging organic contaminants (EOCs) from a range of chemical classes including antimicrobial agents, biocides, industrial chemicals, plastic precursors, preservatives and UV filters in sediment and shellfish samples collected from fifteen sampling sites across Sri Lanka (a tropical developing country) was investigated. Sixteen EOCs were detected in sediments at concentrations ranging from 0.32 to 370.
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