153 Articles found
John Wiley & Sons, Ltd. Articles
-
Environmental and socioeconomic factors contributing to elevated blood lead levels in children from an industrial area of Upper Silesia
The present study concentrated on a cross‐sectional analysis of recent exposure to lead (Pb) and the socioeconomic factors behind increased Pb exposure in Polish children. Lead is one of the most widespread toxic heavy metals in the industrial ...
-
Comparing the sensitivity of chlorophytes, cyanobacteria, and diatoms to major‐use antibiotics
The occurrence of antibiotic residues in the aquatic environment is an emerging concern. In contrast to daphnia and fish, algae are known to be particularly sensitive to antibiotic exposure. However, to date, a systematic evaluation of the ...
-
Multiphase partitioning and risk assessment of endocrine‐disrupting chemicals in the Pearl River, China
Multiphase partitioning of endocrine‐disrupting chemicals (EDCs) in the Pearl River (China) were investigated. The colloidal concentrations for 4‐tert‐octylphenol, 4‐nonylphenol, bisphenol A (BPA), and estrone (E1) were in the ranges of 0.2 ng/L ...
-
Evaluation of the scientific underpinnings for identifying estrogenic chemicals in nonmammalian taxa using mammalian test systems
The US Environmental Protection Agency has responsibility for assessing endocrine activity of more than 10 000 chemicals, a task that cannot reasonably be achieved solely through use of available mammalian and nonmammalian in vivo screening ...
-
Effects of diluted bitumen exposure on juvenile sockeye salmon: From cells to performance
Diluted bitumen (dilbit; the product of oil sands extraction) is transported through freshwater ecosystems critical to Pacific salmon. This is concerning, as crude oil disrupts cardiac development, morphology, and function in embryonic fish, and ...
-
Exposure to a PBDE/OH‐BDE mixture alters juvenile zebrafish (Danio rerio) development
Polybrominated diphenyl ethers (PBDEs) and their metabolites (e.g. hydroxylated BDEs (OH‐BDEs)) are contaminants detected together frequently in human tissues, and are structurally similar to thyroid hormones (TH). THs partially mediate ...
-
Molecular and physiological responses to titanium dioxide and cerium oxide nanoparticles in arabidopsis
Changes in tissue transcriptomes and productivity of Arabidopsis thaliana were investigated during exposure of plants to two widely used engineered metal oxide nanoparticles, titanium dioxide (nano‐titanium) and cerium dioxide (nano‐cerium). ...
-
Oxidative stress response of the aquatic macrophyte Hydrilla verticillata exposed to TiO2 nanoparticles
The present study investigated the effects of titanium dioxide nanoparticles (TiO2‐NPs) on the oxidative stress response in Hydrilla verticillata. Macrophytes were exposed to different concentrations of TiO2‐NPs (0 mg/L, 0.01 mg/L, 0.1 mg/L, ...
-
Petroleum biomarkers as tracers of Exxon Valdez oil
Over the past quarter century, petroleum biomarkers persisted in sequestered Exxon Valdez oil in Prince William Sound and the Gulf of Alaska, hence the oil remained identifiable. These biomarkers are molecular fossils derived from biochemicals in ...
-
Selected pharmaceuticals entering an estuary: Concentrations, temporal trends, partitioning, and fluxes
In many coastal watersheds and ecosystems, rivers discharging to estuaries receive waters from domestic wastewater treatment plants resulting in the release and distribution of pharmaceuticals to the marine environment. In the present study, 15 ...
-
Assessing the mutagenic effect potential of pharmaceuticals and of their transformation products. Implications in the gene expression profiling
The selection and prioritization of pharmaceuticals and of their transformation products for evaluating effects on the environment and human health is a challenging task. Both compound‐ (e.g. mixture composition, concentrations) and biological‐ ...
-
Tissue explant co‐culture model of the hypothalamic‐pituitary‐gonadal‐liver axis of the fathead minnow (Pimephales promelas) as a predictive tool for endocrine disruption
Endocrine disrupting compounds (EDCs) can impact the reproductive system by interfering with the hypothalamic‐pituitary‐gonadal (HPG) axis. While in vitro testing methods have been developed to screen chemicals for endocrine disruption, ...
-
Lethal and sublethal effects of phthalate diesters in Silurana tropicalis larvae
Phthalates are compounds used in polymers to increase their flexibility and are now ubiquitous in the environment due to widespread use. As few studies have focused on the adverse effects of these chemicals in aquatic species, this study aimed to ...
-
An in vitro method for determining the bioaccessibility of pharmaceuticals in wildlife
Wildlife can be exposed to human pharmaceuticals via prey that have accumulated the compounds from wastewater, surface water, sediment and soil. One factor affecting internal absorption of pharmaceuticals is bioaccessibility, the proportion of ...
-
Prednisolone impairs embryonic and post‐hatching development and shell formation of the freshwater snail, Physa acuta
The aim of the present study was to investigate the lethal and sublethal effects of prednisolone (PDS) exposure on the embryonic and post‐hatching stage of the freshwater snail, Physa acuta. The egg masses were exposed for 14 d to PDS ...
-
Long‐term exposure to triphenyl phosphate alters hormone balance and HPG, HPI, and HPT gene expression in zebrafish (Danio rerio)
With the global decline in the use of polybrominated diphenyl ethers (PBDEs), demand for alternative flame retardants, such as triphenyl phosphate (TPP), has increased substantially. TPP is now detected in various environments including aquatic ...
-
Chronic exposure to mono‐(2‐ethylhexyl)‐phthalate causes endocrine disruption and reproductive dysfunction in zebrafish
Phthalic acid esters are frequently detected in aquatic environment. In this study, zebrafish were exposed to low concentrations (0, 0.46, 4.0, and 37.5 µg/L) of mono‐(2‐ethylhexyl) phthalate (MEHP) for 81 days, and the effects on reproduction, ...
-
Sex‐specific changes in thyroid gland function and circulating thyroid hormones in nestling American kestrels (Falco sparverius) following embryonic exposure to PBDEs by maternal transfer
High concentrations of polybrominated diphenyl ethers (PBDEs) accumulate in predatory birds. Several PBDE congeners are considered thyroid disruptors however avian studies are limited. Here, we examined circulating thyroid hormones, thyroid gland ...
-
The effects of bupropion on hybrid striped bass brain chemistry and predatory behavior
Increased use of antidepressants has led to an increase in their detection in final treated wastewater effluents and receiving streams. Antidepressants are intended to modify human behavior by altering brain chemistry, and due to the high ...
-
Ecotoxicological evaluation of low‐concentration bisphenol A exposure on the soil nematode Caenorhabditis elegans and intrinsic mechanisms of stress response in vivo
As a representative species of nematodes, Caenorhabditis elegans is an attractive animal model for evaluating ecotoxicological effects and intrinsic mechanisms of stress response in vivo. To acquire a better knowledge of environmental effects of ...