background : this research provides an insight into exposure information and particle size distributions of bisphenol a (bpa), a common environmental hormone, at polycarbonate (pc) molding plants in southern taiwan. methods : the inhalable dust sampler as iom and the micro-orifice uniform deposition impactor (moudi) were used for samples collection to evaluate the level and particle size distri...

Bisphenol A (BPA) is a chemical widely used to make polycarbonate plastics and epoxy resins lining food and beverage containers. A number of in vitro and in vivo studies have demonstrated that BPA has an estrogenic effect by binding to the nuclear estrogen receptor, and early BPA exposure could in induce early puberty. However, effects of human exposure to BPA on pubertal onset and the associat...

Background: Bisphenol A (BPA) has received attention in environmental and toxicological research due to its widespread effects in biological systems. While several anti-oxidants have been used in ameliorating BPA-induced toxicities in experimental animals, there is the scarcity of research information on the use of Gallic acid (GA) in protecting against BPA-induced toxicity. This study investig...

Background and Objectives: Bisphenol-A (BPA) is a substance used in epoxy resin monomers and polycarbonate plastics. This research focuses on the effect of Bisphenol A on histology alterations in prefrontal cortex (PFC) of rats. Materials and Methods: Thirty male rats were divided into 3 groups: A control group, a placebo group received distilled water intra peritoneal and the experiment group...

The environmental toxin bisphenol A (BPA) is a known mammalian hormone disrupter but its effects on plants have not been well established. The effect of BPA on gene expression in Arabidopsis thaliana was determined using microarray analysis and quantitative gene PCR. Many hormone responsive genes showed changes in expression after BPA treatment. BPA disrupted flowering by a mechanism that may i...

This document is a summary statement of the outcome from he meeting: “Bisphenol A: An Examination of the Relevance of cological, In vitro and Laboratory Animal Studies for Assessng Risks to Human Health” sponsored by both the NIEHS and IDCR at NIH/DHHS, as well as the US-EPA and Commonweal n the estrogenic environmental chemical bisphenol A (BPA, ,2-bis(4-hydroxyphenyl)propane; CAS# 80-05-7). T...

Bisphenol A (BPA) is being removed from many consumer products because of concerns about the chemical’s potential to disrupt the endocrine system. A chemical analog known as bisphenol S (BPS) has been adopted as an alternative in products such as water and baby bottles, thermal paper, and linings of metal cans. In this issue of EHP, a new study shows that BPS has nearly identical impacts on the...

Bisphenol A (BPA; 2,2-bis(4-hydroxyphenyl)propane; CAS Registry No. 80-05-7) is one of endocrine disruptors and is made by combining acetone and phenol. BPA can be metabolized by extensive organisms. In this review these BPA biodegradations or metabolisms by many organisms from microorganisms to mammals were referred. Though the metabolites of BPA can enhance estrogenicity or toxicity, generall...

Concerns about the safety of Bisphenol A, a chemical found in plastics, receipts, food packaging and more, have led to its replacement with substitutes now found in a multitude of consumer products. However, several popular BPA-free alternatives, such as Bisphenol S, share a high degree of structural similarity with BPA, suggesting that these substitutes may disrupt similar developmental and re...

The garden plant portulaca (Portulaca oleracea cv.) efficiently removes bisphenol A (BPA), an endocrine-disrupting chemical, from a hydroponic solution, but the molecular mechanisms underlying BPA metabolism by portulaca remain unclear. In this study, BPA metabolites converted by portulaca were analyzed by liquid chromatography coupled with tandem mass spectrometry. We observed the hydroxylatio...