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https://www.readbyqxmd.com/read/28727988/environmental-exposures-and-pediatric-kidney-function-and-disease-a-systematic-review
#1
REVIEW
Laura Y Zheng, Alison P Sanders, Jeffrey M Saland, Robert O Wright, Manish Arora
BACKGROUND: Environmental chemical exposures have been implicated in pediatric kidney disease. No appraisal of the available evidence has been conducted on this topic. METHODS: We performed a systematic review of the epidemiologic studies that assessed association of environmental exposures with measures of kidney function and disease in pediatric populations. The search period went through July 2016. RESULTS: We found 50 studies that met the search criteria and were included in this systematic review...
July 17, 2017: Environmental Research
https://www.readbyqxmd.com/read/28709372/occurrence-of-and-human-exposure-to-parabens-benzophenones-benzotriazoles-triclosan-and-triclocarban-in-outdoor-swimming-pool-water-in-changsha-china
#2
Jing Lu, Huiyue Mao, Haipu Li, Qiang Wang, Zhaoguang Yang
The entry of personal care products (PCPs) into the environment has, in turn, caused negative influences to human health. Public swimming pools are places that have attracted increasing concerns. In this article, 35 outdoor swimming pools in Changsha City (China) were examined in view of the occurrence of 22 target PCPs contaminants, which fall into four categories: preservatives, UV filters, anticorrosion agents, and antimicrobials. Out of them, 16 compounds were detected in the collected samples. The preservatives was the most dominant category, with methyl paraben being the top compound (a...
July 10, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28709092/exposure-to-benzophenones-parabens-and-triclosan-among-pregnant-women-in-different-trimesters
#3
Hongzhi Zhao, Wenqian Huo, Jiufeng Li, Xinli Ma, Wei Xia, Zhengji Pang, Mingyi Xie, Shunqing Xu, Zongwei Cai
Humans are potentially exposed to many environmental pollutants, many of which may cause adverse health effects, especially to pregnant women and their fetuses. In this study, 11 environmental pollutants from three different chemical classes, including benzophenones, parabens and triclosan were measured in 627 urine samples collected from 209 pregnant women to evaluate exposure and trends as a function of pregnancy stage. Methylparaben (MeP), ethylparaben, propylparaben (PrP), butylparaben, 2,4-dihydroxybenzophenone (BP-1), 2-hydroxy-4-methoxybenzophenone (BP-3) and 4-hydroxybenzophenone were detected in >50% samples...
July 11, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28707517/joint-effect-of-triclosan-and-copper-nanoparticles-on-wastewater-biological-nutrient-removal
#4
Hong Chen, Yuying Cheng, Di Meng, Gang Xue, Mingji Jiang, Xiang Li
Triclosan (TCS) is widely used in household and personal care products, and its release to wastewater might have impact on wastewater biological treatment due to its broad-spectrum antibacterial property. In addition, emerging pollutant such as copper nanoparticles (CuNPs) will release as well from nanoparticle-containing products, and show joint effect with TCS on biological nutrient removal. It was found that TCS of 1 mg/L and 10 mg/L could inhibit the nitrosification and nitrification stage, and the first step of denitrification was supressed as well, resulting in the final total nitrogen removal efficiency decline...
July 14, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28704661/direct-and-indirect-photolysis-of-seven-micropollutants-in-secondary-effluent-from-a-wastewater-lagoon
#5
Yufei Wang, Felicity A Roddick, Linhua Fan
The photodegradation of seven micropollutants commonly found in municipal wastewater, namely caffeine, carbamazepine, diuron, simazine, sulfamethoxazole, triclosan and 2,4-D, was investigated in pure water and secondary effluent to understand the direct and indirect photolysis of these compounds under natural sunlight irradiation. Sulfamethoxazole and triclosan were readily photodegraded with half-lives of 5.8 and 1.8 h, respectively, whilst the others were relatively resistant towards sunlight irradiation...
June 29, 2017: Chemosphere
https://www.readbyqxmd.com/read/28697425/are-the-tio2-nps-a-trojan-horse-for-personal-care-products-pcps-in-the-clam-ruditapes-philippinarum
#6
M Sendra, M G Pintado-Herrera, G V Aguirre-Martínez, I Moreno-Garrido, L M Martin-Díaz, P A Lara-Martín, Blasco J
In recent years, increasing quantities of personal care products (PCPs) are being released into the environment. However, data about bioaccumulation and toxicity are scarce; and extraction and analytical approaches are not well developed. In this work, the marine clam Ruditapes philippinarum, selected as model organism, has been employed to investigate bioaccumulation, antioxidant enzyme activities and DNA damage due to exposure to TiO2 nanoparticles and bulk TiO2 (inorganic compounds that are frequent components of PCPs, plastics, paints and coatings, foods and disinfectant water treatments)...
July 3, 2017: Chemosphere
https://www.readbyqxmd.com/read/28692897/fate-and-impacts-of-pharmaceuticals-and-personal-care-products-after-repeated-applications-of-organic-waste-products-in-long-term-field-experiments
#7
Marjolaine Bourdat-Deschamps, Sabrina Ferhi, Nathalie Bernet, Fréderic Feder, Olivier Crouzet, Dominique Patureau, Denis Montenach, Géraud D Moussard, Vincent Mercier, Pierre Benoit, Sabine Houot
Recycling organic waste products in agriculture is a potential route for the dispersion of pharmaceutical residues in the environment. In this study, the concentrations of thirteen pharmaceuticals and the personal care product triclosan (PPCPs) were determined in different environmental matrices from long-term experimental fields amended with different organic waste products (OWPs), including sludge, composted sludge with green wastes, livestock effluents and composted urban wastes applied at usual agricultural rates...
July 7, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28691101/advancing-discontinuous-fiber-reinforced-composites-above-critical-length-for-replacing-current-dental-composites-and-amalgam
#8
Richard C Petersen
Clinicians have been aware that posterior dental particulate-filled composites (PFCs) have many placement disadvantages and indeed fail clinically at an average rate faster than amalgam alloys. Secondary caries is most commonly identified as the chief failure mechanism for both dental PFCs and amalgam. In terms of a solution, fiber-reinforced composites (FRCs) above critical length (Lc) can provide mechanical property safety factors with compound molding packing qualities to reduce many problems associated with dental PFCs...
February 2017: Journal of Nature and Science
https://www.readbyqxmd.com/read/28688846/evaluation-of-nitrate-effects-in-the-aqueous-photodegradability-of-selected-phenolic-pollutants
#9
G Castro, I Rodríguez, M Ramil, R Cela
The effect of nitrate in the aqueous photodegradation of five phenolic environmental pollutants (ortho-phenylphenol, OPP; methyl paraben, MeP; propyl paraben, PrP; Triclosan, TCS and bisphenol A, BPA) is evaluated. Time-course of precursor compounds and formation of transformation products (TPs) were investigated by liquid chromatography quadrupole time-of-flight mass spectrometry (LC-QTOF-MS). Nitrate showed a positive effect in the removal of selected pollutants. Observed TPs resulted from hydroxylation, aromatic nitration (with or without molecule cleavage) and nitro dehalogenation processes...
July 3, 2017: Chemosphere
https://www.readbyqxmd.com/read/28683430/loading-and-removal-of-pahs-fragrance-compounds-triclosan-and-toxicity-by-composting-process-from-sewage-sludge
#10
Noriatsu Ozaki, Akihiro Nakazato, Kazuki Nakashima, Tomonori Kindaichi, Akiyoshi Ohashi
Although the production of compost from sewage sludge is well established in developed countries, the use of sludge-based compost may represent a source of pollutants. The present study assessed the levels of potentially harmful compounds in compost as well as their rates of decrease during composting. The concentrations of 16 polycyclic aromatic hydrocarbons (PAHs), three fragrance compounds (OTNE, HHCB and AHTN) and triclosan were determined in the initial sewage sludge and in compost over the span of 1year...
July 3, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28683399/incorporation-of-triclosan-and-acridine-orange-into-liposomes-for-evaluating-the-susceptibility-of-candida-albicans
#11
Karla B Romio, Kevin F Dos Santos, Romário J da Silva, Maria F C Pedro, Alessandro S Kalck, Marcos da Silva Sousa, Leandro M Possamai, Paula C S Souto, Josmary R Silva, Nara C de Souza
Candida albicans is responsible for many of the infections affecting immunocompromised individuals. Although most C. albicans are susceptible to antifungal drugs, uncontrolled use of these drugs has promoted the development of resistance to current antifungals. The clinical implication of resistant strains has led to the search for safer and more effective drugs as well as alternative approaches, such as controlled drug release using liposomes and photodynamic inactivation (PDI), to eliminate pathogens by combining light and photosensitizers...
June 24, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28674705/antibacterial-effects-of-toothpastes-evaluated-in-an-%C3%A2-in-vitro-biofilm-model
#12
Eva Fernández, María Del Carmen Sánchez, Arancha Llama-Palacios, Mariano Sanz, David Herrera
PURPOSE: To test the antibacterial effects of different toothpastes with the slurry method of toothpaste application in an in vitro oral biofilm model including relevant periodontal pathogens. MATERIALS AND METHODS: Four commercially available toothpastes, two containing sodium fluoride (NaF) at different concentrations (1450 and 2500 ppm), two NaF with either triclosan or stannous fluoride, and a control phosphate-buffered saline (PBS) were used. Multispecies biofilms containing 6 species of oral bacteria were grown on hydroxyapatite disks for 72 h and then exposed for 2 min to the toothpaste slurries or phosphate buffer saline (PBS) by immersion, under continuous agitation at 37°C...
2017: Oral Health & Preventive Dentistry
https://www.readbyqxmd.com/read/28662789/evidence-appraisal-of-de-jonge-sw-atema-jj-solomkin-js-boermeester-ma-meta-analysis-and-trial-sequential-analysis-of-triclosan-coated-sutures-for-the-prevention-of-surgical-site-infection-br-j-surg-2017-104-2-e118-e133
#13
https://www.readbyqxmd.com/read/28658955/salt-induced-regenerative-surface-for-bacteria-killing-and-release
#14
Bozhen Wu, Lixun Zhang, Lei Huang, Shengwei Xiao, Yin Yang, Mingqiang Zhong, Jintao Yang
Antibacterial surfaces with both bacteria killing and release functions show great promise in biological and biomedical applications, in particular for reusable medical devices. However, these surfaces either require a sophisticated technique to create delicate structures or need rigorous stimuli to trigger the functions, greatly limiting their practical application. In this study, we made a step forward by developing a simple system based on a salt-responsive polyzwitterionic brush. Specifically, the salt-responsive brush of poly(3-(dimethyl (4-vinylbenzyl) ammonium) propyl sulfonate) (polyDVBAPS) was endowed with bactericidal function by grafting an effective bactericide, i...
July 10, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28647880/selective-removal-and-preconcentration-of-triclosan-using-a-water-compatible-imprinted-nano-magnetic-chitosan-particles
#15
Yuan Chen, Xin Lei, Rongni Dou, Yuancai Chen, Yongyou Hu, Zhiqi Zhang
A water-compatible magnetic triclosan (TCS) imprinted material (TCS-CTS-Fe(0)-MIPs) was synthesized for selective enrichment and detection of TCS in real complex water samples. The material was synthesized by using chitosan (CTS) as functional monomer, which has rich surface O- and N-containing functional groups. The TCS imprinted CTS was coated on Fe(0) surface and then cross-linked with glutaraldehyde. Scanning electron microscopy suggested that the imprinted material was covered with a layer of imprinted film, Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy confirmed that the imprinted material had more functional groups (amino and hydroxyl groups) than that of non-imprinted material...
June 25, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28646739/contribution-of-pharmaceuticals-and-personal-care-products-ppcps-to-whole-toxicity-of-water-samples-collected-in-effluent-dominated-urban-streams
#16
Ikumi Tamura, Yusuke Yasuda, Kei-Ichiro Kagota, Saori Yoneda, Norihide Nakada, Vimal Kumar, Yutaka Kameda, Kumiko Kimura, Norihisa Tatarazako, Hiroshi Yamamoto
Water samples were collected from effluent-dominated urban streams in Tokushima, Kyoto, and Saitama in Japan to roughly determine the contribution of pharmaceuticals and personal care products (PPCPs) and surfactants to whole toxicity of the water. Approximately 100 PPCPs including anionic surfactants such as linear alkylbenzene sulfonate (LAS), were chemically analyzed. Using 14 water samples, chronic or sub-chronic toxicity tests were conducted on three aquatic species, the green alga Raphidocelis subcapitata, the cladoceran Ceriodaphnia dubia, and the zebrafish Danio rerio...
June 21, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28646572/general-fate-model-for-microconstituents-in-an-activated-sludge-system
#17
Bahman Banihashemi
Nine lab-scale continuous flow porous-pot bioreactors operating at various solids retention times and hydraulic retention times were conducted to simulate activated sludge (AS) systems and to evaluate the biodegradation kinetic models for the fate of 17α-ethinylestradiol (EE2), bisphenol-A (BPA), and triclosan (TCS) at the µg/L range. Mathematical models were applied to describe the degradation mechanism of selected microconstituents (MCs) and pseudo second-order model were found to best fit the results when active MCs degraders (XC) were used (r2= 0...
June 16, 2017: Water Environment Research: a Research Publication of the Water Environment Federation
https://www.readbyqxmd.com/read/28641188/risk-assessment-of-triclosan-released-from-sewage-treatment-plants-in-european-rivers-using-a-combination-of-risk-quotient-methodology-and-monte-carlo-simulation
#18
Vasiliki S Thomaidi, Christos Matsoukas, Athanasios S Stasinakis
Ιn this study a probabilistic risk assessment was applied to investigate the environmental risks for the European aquatic environment associated with triclosan (TCS) occurrence in treated wastewater. The concentrations of TCS in effluents of European Sewage Treatment Plants (STPs) were recorded through literature review, while toxicity data was collected for three groups of aquatic organisms (algae, Daphnia magna and fish). The ratio of Measured Environmental Concentration (MEC) and Predicted No Effect Concentration (PNEC), expressed as a Risk Quotient (RQ), was calculated for risk characterization, while Monte Carlo simulation was applied to quantify the associated uncertainty...
June 19, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28639849/degradation-of-emerging-contaminants-by-acclimated-activated-sludge
#19
Shizong Wang, Jianlong Wang
The emerging organic micro-pollutants (EMOPs) cannot be effectively removed by conventional wastewater treatment processes. In this paper, the most commonly detected EMOPs in the effluent of wastewater treatment plants, including trimethoprim, sulfamethoxazole, carbamazepine, diclofenac, triclosan and methyl 3,5-dichloro-4-hydroxybenzoate, were selected to acclimate activated sludge, to enhance the biodegradation of EMOPs. The results showed that the acclimated activated sludge can significantly enhance the removal of trimethoprim, sulfamethoxazole, diclofenac, triclosan and methyl 3,5-dichloro-4-hydroxybenzoate, but slightly improve the degradation of carbamazepine...
July 5, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28632490/the-florence-statement-on-triclosan-and-triclocarban
#20
Rolf U Halden, Avery E Lindeman, Allison E Aiello, David Andrews, William A Arnold, Patricia Fair, Rebecca E Fuoco, Laura A Geer, Paula I Johnson, Rainer Lohmann, Kristopher McNeill, Victoria P Sacks, Ted Schettler, Roland Weber, R Thomas Zoeller, Arlene Blum
The Florence Statement on Triclosan and Triclocarban documents a consensus of more than 200 scientists and medical professionals on the hazards of and lack of demonstrated benefit from common uses of triclosan and triclocarban. These chemicals may be used in thousands of personal care and consumer products as well as in building materials. Based on extensive peer-reviewed research, this statement concludes that triclosan and triclocarban are environmentally persistent endocrine disruptors that bioaccumulate in and are toxic to aquatic and other organisms...
June 20, 2017: Environmental Health Perspectives
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