Automatic flow-through system for exploration of the human bioaccessibility of endocrine disrupting compounds from microplastics

The Analyst ◽  
2021 ◽  
Author(s):  
Manuel Miro ◽  
Alexandra Sixto ◽  
Bilal El-Morabit ◽  
María José Trujillo-Rodríguez ◽  
Enrique Javier Carrasco-Correa
Keyword(s):  
Endocrine Disrupting Compounds ◽  
Gi Tract ◽  
Endocrine Disrupting ◽  
Flow Through

This article reports on the first attempt towards investigating the leaching rates in the human gastrointestinal (GI) tract of plastic-borne contaminants that can be ingested accidentally using physiologically relevant body...

Nanofiltration of endocrine disrupting compounds

2003 ◽  
Vol 3 (5-6) ◽  
pp. 321-327 ◽  
Author(s):  
M. Gallenkemper ◽  
T. Wintgens ◽  
T. Melin
Keyword(s):  
Wastewater Treatment ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
Endocrine Disrupting Compounds ◽  
Municipal Wastewater Treatment ◽  
Water And Wastewater Treatment ◽  
Wide Range ◽  
Endocrine Disrupting ◽  
Municipal Wastewater Treatment Plants ◽  
Set Up

Endocrine disrupting compounds can affect the hormone system in organisms. A wide range of endocrine disrupters were found in sewage and effluents of municipal wastewater treatment plants. Toxicological evaluations indicate that conventional wastewater treatment plants are not able to remove these substances sufficiently before disposing effluent into the environment. Membrane technology, which is proving to be an effective barrier to these substances, is the subject of this research. Nanofiltration provides high quality permeates in water and wastewater treatment. Eleven different nanofiltration membranes were tested in the laboratory set-up. The observed retention for nonylphenol (NP) and bisphenol A (BPA) ranged between 70% and 100%. The contact angle is an indicator for the hydrophobicity of a membrane, whose influence on the permeability and retention of NP was evident. The retention of BPA was found to be inversely proportional to the membrane permeability.

scholarly journals Effects of the Hedgehog signalling inhibitor itraconazole on developing rat ovaries

2021 ◽  
Author(s):  
Hanna Katarina Lilith Johansson ◽  
Camilla Taxvig ◽  
Gustav Peder Mohr Olsen ◽  
Terje Svingen
Keyword(s):  
Endocrine Disrupting Chemicals ◽  
Endocrine Disrupting Compounds ◽  
Perinatal Period ◽  
Endocrine Function ◽  
Ovary Development ◽  
Knock Out ◽  
Female Reproductive Health ◽  
Endocrine Disrupting ◽  
Hh Signaling ◽  
Knock Out Mice

Abstract Early ovary development is considered to be largely hormone independent, yet there are associations between fetal exposure to endocrine disrupting chemicals and reproductive disorders in women. This can potentially be explained by perturbations to establishment of ovarian endocrine function rather than interference with an already established hormone system. In this study we explore if Hedgehog (HH) signaling, a central pathway for correct ovary development, can be disrupted by exposure to HH-disrupting chemicals, using the antifungal itraconazole as model compound. In the mouse Leydig cell line TM3, used as a proxy for ovarian theca cells, itraconazole exposure had a suppressing effect on genes downstream of HH signaling, such as Gli1. Exposing explanted rat ovaries (gestational day 22 or postnatal day 3) to 30 µM itraconazole for 72 h induced significant suppression of genes in the HH signaling pathway with altered Ihh, Gli1, Ptch1, and Smo expression similar to those previously observed in Ihh/Dhh knock-out mice. Exposing rat dams to 50 mg/kg bw/day in the perinatal period did not induce observable changes in the offspring’s ovaries. Overall, our results suggest that HH signal disruptors may affect ovary development with potential long-term consequences for female reproductive health. However, potent HH inhibitors would likely cause severe teratogenic effects at doses lower than those causing ovarian dysgenesis, so the concern with respect to reproductive disorder is for the presence of HH disruptors at low concentration in combination with other ovary or endocrine disrupting compounds.

Comparative assessment of endocrine disrupting compounds removal in heterotrophic and enriched nitrifying biomass

Chemosphere ◽  
2019 ◽  
Vol 217 ◽  
pp. 659-668 ◽  
Author(s):  
Elissavet Kassotaki ◽  
Maite Pijuan ◽  
Ignasi Rodriguez-Roda ◽  
Gianluigi Buttiglieri
Keyword(s):  
Endocrine Disrupting Compounds ◽  
Comparative Assessment ◽  
Endocrine Disrupting

The potential reproductive effects of exposure of domestic ruminants to endocrine disrupting compounds

2002 ◽  
Vol 74 (1) ◽  
pp. 3-12 ◽  
Author(s):  
M.L. Boerjan ◽  
S. Freijnagel ◽  
S.M. Rhind ◽  
G.A.L. Meijer
Keyword(s):  
Drinking Water ◽  
Reproductive Function ◽  
Endocrine Disrupting Compounds ◽  
Laboratory Animals ◽  
Domestic Ruminants ◽  
Reproductive Effects ◽  
Endocrine Disrupting ◽  
Contaminated Food

AbstractChemical compounds that mimic or block some of the actions of the steroid hormone oestradiol, have created public concern primarily because of potential adverse reproductive effects in wildlife and humans. Many studies, in vivo and in vitro, have revealed abnormal reproductive function following exposure to these compounds. The number of chemicals known to have the potential to modulate endocrine functions is increasing. In contrast to humans and wildlife, the potential reproductive effects of exposure of domestic animals to endocrine disrupting compounds (EDC) have been studied little. The aim of this overview is to evaluate the possible contribution of EDC to reproductive failure in domestic ruminants.Sources and classes of EDC are discussed as well as their structure and the modes of hormone disruption. Endocrine disrupting agents may interfere with the reproductive processes of both males and females at several points of the reproductive cycle and through a range of physiological mechanisms. Extrapolating from the results obtained with laboratory animals, the mechanisms whereby infertility in domestic ruminants might be expressed by exposure to EDC through contaminated food and drinking water are addressed.A preliminary risk assessment is included and it is concluded that under certain circumstances there may be a significantly enhanced intake of oestrogenic hormones and EDC through sewage-contaminated water or soil-contaminated herbage. The physiological consequences for domestic ruminants of EDC ingestion, at the rates estimated, are largely unknown. However, the levels of exposure to oestrogenic hormones and phthalates in grazing ruminants are such that when studying fertility problems in high-yielding dairy cattle the impacts of exposure to endocrine disruptors via the food and drinking water cannot be neglected.

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