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Endocrine disruptor

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https://www.readbyqxmd.com/read/28937960/prenatal-exposure-to-nonpersistent-endocrine-disruptors-and-behavior-in-boys-at-3-and-5-years
#1
Claire Philippat, Dorothy Nakiwala, Antonia M Calafat, Jérémie Botton, Maria De Agostini, Barbara Heude, Rémy Slama
BACKGROUND: Sex-specific associations have been reported between phthalates, bisphenol A (BPA), and child behavior. No data on large study populations are available for other phenols with possible endocrine-disrupting properties. OBJECTIVES: We aimed to study associations between prenatal exposure to phthalates and several phenols on behavior among male infants. METHODS: We quantified 11 phthalate metabolites and nine phenols (four parabens, benzophenone-3, BPA, two dichlorophenols, triclosan) in spot urine samples collected during pregnancy among EDEN cohort mothers who delivered a boy...
September 15, 2017: Environmental Health Perspectives
https://www.readbyqxmd.com/read/28937689/endocrine-disruptors-flame-retardants-and-increased-risk-of-thyroid-cancer
#2
Bilal B Mughal, Barbara A Demeneix
No abstract text is available yet for this article.
September 22, 2017: Nature Reviews. Endocrinology
https://www.readbyqxmd.com/read/28936609/a-hierarchical-testing-strategy-for-micropollutants-in-drinking-water-regarding-their-potential-endocrine-disrupting-effects-towards-health-related-indicator-values
#3
Jochen Kuckelkorn, Regine Redelstein, Timon Heide, Jennifer Kunze, Sibylle Maletz, Petra Waldmann, Tamara Grummt, Thomas-Benjamin Seiler, Henner Hollert
In Germany, micropollutants that (may) occur in drinking water are assessed by means of the health-related indicator value (HRIV concept), developed by the German Federal Environment Agency. This concept offers five threshold values (≤ 0.01 to ≤ 3 μg l(-1)) depending on availability and completeness of data regarding genotoxicity, neurotoxicity, and germ cell-damaging potential. However, the HRIV concept is yet lacking integration of endocrine disruptors as one of the most prominent toxicological concerns in water bodies, including drinking water...
September 21, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28935616/endocrine-disruptors-and-health-effects-in-africa-a-call-for-action
#4
Maria S Bornman, Natalie H Aneck-Hahn, Christiaan de Jager, Gesina M Wagenaar, Hindrik Bouwman, Irene E J Barnhoorn, Sean M Patrick, Laura N Vandenberg, Andreas Kortenkamp, Bruce Blumberg, Sarah Kimmins, Bernard Jegou, Jacques Auger, Joseph DiGangi, Jerrold J Heindel
BACKGROUND: Africa faces a number of unique environmental challenges. Unfortunately, it lacks the infrastructure needed to support the comprehensive environmental studies that could provide the scientific basis to inform environmental policies. There are a number of known sources of endocrine-disrupting chemicals (EDCs) and other hazardous chemicals in Africa. However, a coordinated approach to identify and monitor these contaminants and to develop strategies for public health interventions has not yet been made...
August 22, 2017: Environmental Health Perspectives
https://www.readbyqxmd.com/read/28935448/perinatal-effects-of-exposure-to-pcbs-on-social-preferences-in-young-adult-and-middle-aged-offspring-mice
#5
Alaa Karkaba, Nidhal Soualeh, Rachid Soulimani, Jaouad Bouayed
In social species, social interactions between conspecifics constitute a fundamental component to establish relations, provide best chances to reproduce, and even improve survival rates. In this study, a three-chambered social approach test was used to estimate the level of sociability and level of preference for social novelty in both male and female young adult (postnatal day (PND) 50) and middle-aged (PND 330) offspring mice (n=10 per group) that were perinatally exposed to a mixture of six polychlorinated biphenyls (PCBs), 28, 52, 101, 138, 153, and 180, at environmentally low doses (10 and 1000ng/kg b...
September 18, 2017: Hormones and Behavior
https://www.readbyqxmd.com/read/28934726/application-of-adverse-outcome-pathways-to-u-s-epa-s-endocrine-disruptor-screening-program
#6
REVIEW
Patience Browne, Pamela D Noyes, Warren M Casey, David J Dix
BACKGROUND: The U.S. EPA's Endocrine Disruptor Screening Program (EDSP) screens and tests environmental chemicals for potential effects in estrogen, androgen, and thyroid hormone pathways, and it is one of the only regulatory programs designed around chemical mode of action. OBJECTIVES: This review describes the EDSP's use of adverse outcome pathway (AOP) and toxicity pathway frameworks to organize and integrate diverse biological data for evaluating the endocrine activity of chemicals...
September 1, 2017: Environmental Health Perspectives
https://www.readbyqxmd.com/read/28934718/urinary-bpa-and-phthalate-metabolite-concentrations-and-plasma-vitamin-d-levels-in-pregnant-women-a-repeated-measures-analysis
#7
Lauren E Johns, Kelly K Ferguson, David E Cantonwine, Thomas F McElrath, Bhramar Mukherjee, John D Meeker
BACKGROUND: In addition to its well-established role in maintaining skeletal health, vitamin D has essential regulatory functions in female reproductive and pregnancy outcomes. Phthalates and bisphenol A (BPA) are endocrine disruptors, and previous research has suggested that these chemical agents may disrupt circulating levels of total 25(OH)D in adults. OBJECTIVES: We investigated the relationships between repeated measures of urinary phthalate metabolites and BPA and circulating total 25(OH)D in a prospective cohort of pregnant women...
August 31, 2017: Environmental Health Perspectives
https://www.readbyqxmd.com/read/28928807/effects-of-low-dose-of-bisphenol-a-on-the-proliferation-and-mechanism-of-primary-cultured-prostate-epithelial-cells-in-rodents
#8
Dongyan Huang, Jianhui Wu, Xin Su, Han Yan, Zuyue Sun
Bisphenol A (BPA) is a well-known endocrine disruptor compound (EDC) that aggravates testosterone-induced benign prostate hyperplasia by increasing the relative weight of the ventral and dorsolateral prostate in rats. This phenomenon is primarily attributed to the exogenous estrogen effect of BPA. However, the direct effect of BPA on prostate cells has not been characterized. The present study investigated the proliferative effect and possible mechanisms of action of BPA on the prostatic epithelium of rats...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28928476/bisphenol-a-affects-on-the-functional-properties-and-proteome-of-testicular-germ-cells-and-spermatogonial-stem-cells-in-vitro-culture-model
#9
Polash Chandra Karmakar, Hyun-Gu Kang, Yong-Hee Kim, Sang-Eun Jung, Md Saidur Rahman, Hee-Seok Lee, Young-Hyun Kim, Myung-Geol Pang, Buom-Yong Ryu
The endocrine disruptor bisphenol A (BPA) is well known for its adverse effect on male fertility. Growing evidence suggests that BPA may interact with testicular germ cells and cause infertility as a result of its estrogenic activity. Objective of current in vitro study was to investigate the proliferation, survivability and stemness properties of mouse testicular germ cells exposed to BPA, and to evaluate possible expression of cellular proteome. Our results showed that germ cell viability and proliferation were not affected by low concentrations (0...
September 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28919451/biphasic-modulation-of-neuro-and-interrenal-steroidogenesis-in-juvenile-african-sharptooth-catfish-clarias-gariepinus-exposed-to-waterborne-di-2-ethylhexyl-phthalate
#10
Augustine Arukwe, Oju R Ibor, Aina O Adeogun
Receptor (i.e genomic) and non-receptor (or non-genomic) effects of endocrine toxicology have received limited or almost non-existent attention for tropical species and regions. In the present study, we have studied the effects of di-(2-ethylhexyl) phthalate (DEHP) on neuro- and interrenal steroidogenesis of the African catfish (Clarias gariepinus) using molecular, immunochemical and physiological approaches. Juvenile fish (mean weight and length: 5.6 ± 0.6g and 8.2 ± 1.2 cm, respectively), were randomly distributed into ten 120 L rectangular glass tanks containing 60 L of dechlorinated tap water, at 50 fish per exposure group...
September 14, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28918853/hormone-related-cancers-and-endocrine-disruptors-new-aspects-of-an-old-question
#11
EDITORIAL
(no author information available yet)
No abstract text is available yet for this article.
December 5, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28916285/profiling-of-bisphenol-s-towards-nuclear-receptors-activities-in-human-reporter-cell-lines
#12
Ondrej Zenata, Zdenek Dvorak, Radim Vrzal
Bisphenol S (BPS) is heat-stable structural analog of bisphenol A (BPA), a known endocrine disruptor. Due to the effort to replace BPA with BPS, it is essential to know if BPS is suitable non-toxic replacement without reported deleterious effects of BPA. Since most of the BPA effects are ascribed to its ability to activate nuclear receptors, we screened some prominent members of this family in order to confirm or refute some recent findings. We found that BPS insignificantly activated aryl hydrocarbon receptor (AhR) in reporter gene assay and no induction of AhR target gene CYP1A1 was observed in human hepatocytes (HH)...
September 12, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28915546/emergent-contaminants-endocrine-disruptors-and-their-laccase-assisted-degradation-a-review
#13
REVIEW
Carlos Barrios-Estrada, Magdalena de Jesús Rostro-Alanis, Blanca Delia Muñoz-Gutiérrez, Hafiz M N Iqbal, Soundarapandian Kannan, Roberto Parra-Saldívar
Herein, an effort has been made to highlight the trends of the state-of-the-art of laccase-assisted degradation of emerging contaminants at large and endocrine disruptors in particular. Since first described in the 19th century, laccase has received particular interest for inter- and multidisciplinary investigations due to its uniqueness and remarkable biotechnological applicability. There has always been a paramount concern over the widespread occurrences of various pollutant types, around the globe. Therefore, pollution free processes are gaining ground all over the world...
September 11, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28915506/maternal-diethylhexyl-phthalate-exposure-affects-adiposity-and-insulin-tolerance-in-offspring-in-a-pcna-dependent-manner
#14
Brian G Hunt, Yuan-Liang Wang, Min-Shan Chen, Shao-Chun Wang, Susan E Waltz
The ubiquitous plasticizer, diethylhexyl phthalate (DEHP), is a known endocrine disruptor. However, DEHP exposure effects are not well understood. Changes in industrial and agricultural practices have resulted in increased prevalence of DEHP exposure and has coincided with the heightened occurrence of metabolic syndrome and obesity. DEHP and its metabolites are detected in the umbilical cord blood of newborns; however, the prenatal and perinatal effects of DEHP exposure have not been intensively studied. Previously, we discovered that phosphorylation (p) of proliferating cell nuclear antigen (PCNA) at tyrosine 114 (Y114) is required for adipogenesis and diet-induced obesity in mice...
September 12, 2017: Environmental Research
https://www.readbyqxmd.com/read/28915396/a-novel-biodegradation-pathway-of-the-endocrine-disruptor-di-2-ethyl-hexyl-phthalate-by-pleurotus-ostreatus-based-on-quantum-chemical-investigation
#15
Miriam Ahuactzin-Pérez, Saúl Tlecuitl-Beristain, Jorge García-Dávila, Ericka Santacruz-Juárez, Manuel González-Pérez, María Concepción Gutiérrez-Ruíz, Carmen Sánchez
Di(2-ethyl hexyl) phthalate (DEHP) is a plasticizer that interfere with endocrine systems in mammals. Growth parameters for Pleurotus ostreatus grown on media containing glucose and different concentrations of DEHP (0, 500 and 1000mg/L) were evaluated. The highest biomass production was observed in medium supplemented with 1000mg of DEHP/L. Half-life of DEHP biodegradation, biodegradation constant of DEHP, and percentage of removal efficiency (%E) were also determined. P. ostreatus degraded 100% of DEHP after 504h...
September 12, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28915126/toxicological-profile-of-organochlorines-aldrin-and-dieldrin-an-indian-perspective
#16
REVIEW
Noopur Sharma, Deepali Garg, Roumi Deb, Ratika Samtani
Several epidemiological studies have suggested various environmental factors as a possible cause for increased incidence of various abnormalities. Of the various environmental contaminants, the most prevalent and the most discussed are the endocrine disrupting chemicals. Contact of such disruptors with humans has become inevitable today. They are cosmopolitan and present from agriculture to industrial sectors, even in day-to-day consumer products. Aldrin and dieldrin belong to one such class of substances which are known to have a toxic effect on various physiological systems of the human body...
September 15, 2017: Reviews on Environmental Health
https://www.readbyqxmd.com/read/28914781/response-to-elwood-m-et-al-comment-on-maternal-exposure-to-domestic-hair-cosmetics-and-occupational-endocrine-disruptors-is-associated-with-a-higher-risk-of-hypospadias-in-the-offspring-int-j-environ-res-public-health-2017-14-27
#17
Elodie Haraux, Karine Braun, Philippe Buisson, Erwan Stéphan-Blanchard, Camille Devauchelle, Jannick Ricard, Bernard Boudailliez, Pierre Tourneux, Richard Gouron, Karen Chardon
Dear Editor, Thank you for inviting us to reply to a "Comment" paper to our published paper "Maternal Exposure to Domestic Hair Cosmetics and Occupational Endocrine Disruptors Is Associated with a Higher Risk of Hypospadias in the Offspring" (Authors: Elodie Haraux, Karine Braun, Philippe Buisson, Erwan Stéphan-Blanchard, Jannick Ricard, Camille Devauchelle, Bernard Boudailliez, Pierre Tourneux, Richard Gouron, Karen Chardon).[...].
September 15, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28911802/transient-gestational-exposure-to-drinking-water-containing-excess-hexavalent-chromium-modifies-insulin-signaling-in-liver-and-skeletal-muscle-of-rat-progeny
#18
Navaneethabalakrishnan Shobana, Mariajoseph Michael Aruldhas, Lalmuankimi Tochhawng, Ayyalu Loganathan, Sadhasivam Balaji, Mani Kathiresh Kumar, Liaquat Alikhan Sheerin Banu, Ajit Kumar Navin, Chinnaiyan Mayilvanan, Ramachandran Ilangovan, Karundevi Balasubramanian
Chromium (Cr), an essential micronutrient potentiates insulin action, whereas excess hexavalent Cr (CrVI) acts as an endocrine disruptor. Pregnant mothers living in areas abutting industries using the metal and chromite ore dumps are exposed to ground water contaminated with Cr. Nevertheless, the impact of prenatal exposure to excess CrVI on insulin signaling in the progeny remains obscure. We tested the hypothesis "transient gestational exposure to drinking water containing excess CrVI may modify insulin signaling during postnatal life"...
September 11, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28910977/bisphenol-a-induced-apoptosis-and-transcriptome-differences-of-spermatogonial-stem-cells-in-vitro
#19
Xiaowen Gong, Hui Xie, Xiaoyong Li, Ji Wu, Yi Lin
Bisphenol A (BPA) is widely used as an industrial plasticizer, which is also an endocrine disruptor and considered to have adverse effects on reproduction. In male mammals, the long-term production of billions of spermatozoa relies on the regulated proliferation and differentiation of spermatogonial stem cells (SSCs). However, little is known about the effects of BPA on the viability of SSCs. To investigate the influence of BPA exposure on SSCs in vitro, we isolated SSCs from mouse and successfully established in vitro propagation of SSCs...
September 1, 2017: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/28906429/comment-on-maternal-exposure-to-domestic-hair-cosmetics-and-occupational-endocrine-disruptors-is-associated-with-a-higher-risk-of-hypospadias-in-the-offspring-int-j-environ-res-public-health-2017-14-27
#20
Mark Elwood, Dillon O'Brien, Katie-Anne Budgen
There are considerable inconsistencies in the results of Haraux et al. [1].[...].
September 14, 2017: International Journal of Environmental Research and Public Health
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