Read by QxMD icon Read


Shizong Wang, Yanan Yin, Jianlong Wang
Triclosan is an antimicrobial agent which has been frequently detected in the environment. In this paper, the biodegradation of triclosan after radiation-induced advanced oxidation was investigated. The results show that the removal efficiency of triclosan in the combined irradiation and biological treatment process ranged from 88% to 97%, depending on the absorbed dose, while it was only 54% in the single biological treatment process. The removal efficiency of total organic carbon (TOC) was in the range of 53...
October 13, 2016: Chemosphere
Patrick J McNamara, Stuart B Levy
The Food and Drug Administration (FDA) recently released a final rule to ban triclosan and 18 other antimicrobial chemicals from soaps. We applaud this rule specifically because of the associated risks that triclosan poses to the spread of antibiotic resistance throughout the environment. This persistent chemical will apply constant stress to bacteria to adapt, and behavior that promotes antibiotic resistance needs to be stopped immediately when the benefits are null.
October 10, 2016: Antimicrobial Agents and Chemotherapy
Pingping Zhai, Xuan Chen, Wenbo Dong, Hongjing Li, Jean-Marc Chovelon
This study aimed to investigate the degradation of triclosan (TCS) in the presence of p-aminobenzoic acid (PABA) under simulated sunlight irradiation (λ ≥ 290 nm). The effect of PABA concentration, pH, dissolved organic matter (DOM), and DOM-hydrolytic Fe(III) species complexes on the photodegradation of TCS in the presence of PABA (TCS-PABA) was also studied. The photolysis of TCS-PABA obeyed pseudo-first-order kinetics well, and the degradation of TCS-PABA enhanced with increasing solution pH (from 3...
October 13, 2016: Environmental Science and Pollution Research International
Zeynep Ustaoglu Iyigundogdu, Okan Demir, Ayla Burcin Asutay, Fikrettin Sahin
In conjunction with an increasing public awareness of infectious diseases, the textile industry and scientists are developing hygienic fabrics by the addition of various antimicrobial and antiviral compounds. In the current study, sodium pentaborate pentahydrate and triclosan are applied to cotton fabrics in order to gain antimicrobial and antiviral properties for the first time. The antimicrobial activity of textiles treated with 3 % sodium pentaborate pentahydrate, 0.03 % triclosan, and 7 % Glucapon has been investigated against a broad range of microorganisms including bacteria, yeast, and fungi...
October 12, 2016: Applied Biochemistry and Biotechnology
Anton Ribbenstedt, Lukas Mustajärvi, Magnus Breitholtz, Elena Gorokhova, Philipp Mayer, Anna Sobek
Ecotoxicity testing is a crucial component of chemical risk assessment. Still, due to methodological difficulties related to controlling exposure concentrations over time, data on long-term effects of organic chemicals at low concentrations are limited. The aim of the present study was therefore to test the applicability of passive dosing to maintain stable concentrations of the organochlorine bacteriocide triclosan in the water phase during a 6-week multi-generation population development test with the harpacticoid copepod Nitocra spinipes...
October 12, 2016: Environmental Toxicology and Chemistry
Yanshan Lv, Shaoyou Lu, Yanyan Dai, Caiyan Rui, Yongjun Wang, Yuanxiu Zhou, Yanru Li, Qihua Pang, Ruifang Fan
Bisphenol A (BPA) is a widely used chemical in the production of many polycarbonate plastics, epoxy resin linings for food and beverage containers and thermal papers. Oral intakes from the contaminated diets were considered as the predominant source of BPA exposure for humans. However, due to the high levels of BPA on thermal receipts and their wide applications in our daily life, the amount of BPA be transferred to the skin after holding thermal paper should not be underestimated, particularly for cashiers...
October 8, 2016: Environment International
L W B Olaniyan, N Mkwetshana, A I Okoh
Triclosan (TCS) is a broad spectrum antibacterial agent present as an active ingredient in some personal care products such as soaps, toothpastes and sterilizers. It is an endocrine disrupting compound and its increasing presence in water resources as well as in biosolid-amended soils used in farming, its potential for bioaccumulation in fatty tissues and toxicity in aquatic organisms are a cause for concern to human and environmental health. TCS has also been detected in blood, breast milk, urine and nails of humans...
2016: SpringerPlus
Lesa L Aylward, Sean M Hays, Angelika Zidek
Population biomonitoring data sets such as the Canadian Health Measures Survey (CHMS) and the United States National Health and Nutrition Examination Survey (NHANES) collect and analyze spot urine samples for analysis for biomarkers of exposure to non-persistent chemicals. Estimation of population intakes using such data sets in a risk-assessment context requires consideration of intra- and inter-individual variability to understand the relationship between variation in the biomarker concentrations and variation in the underlying daily and longer-term intakes...
October 5, 2016: Journal of Exposure Science & Environmental Epidemiology
Claire Morvan, David Halpern, Gérald Kénanian, Constantin Hays, Jamila Anba-Mondoloni, Sophie Brinster, Sean Kennedy, Patrick Trieu-Cuot, Claire Poyart, Gilles Lamberet, Karine Gloux, Alexandra Gruss
The bacterial pathway for fatty acid biosynthesis, FASII, is a target for development of new anti-staphylococcal drugs. This strategy is based on previous reports indicating that self-synthesized fatty acids appear to be indispensable for Staphylococcus aureus growth and virulence, although other bacteria can use exogenous fatty acids to compensate FASII inhibition. Here we report that staphylococci can become resistant to the FASII-targeted inhibitor triclosan via high frequency mutations in fabD, one of the FASII genes...
October 5, 2016: Nature Communications
Seyed Mohammad Davachi, Behzad Shiroud Heidari, Iman Hejazi, Javad Seyfi, Erfan Oliaei, Arman Farzaneh, Hamid Rashedi
In this study, an optimized interface-modified ternary blend with antibacterial activity based on polylactic acid/starch/poly ε-caprolactone (PLASCL20), mixed with nano hydroxyapatite (nHA) via melt blending. This method results in a homogeneous nanocomposite blend in which the addition of 3% nHA improves the overall properties such as hydrolytic degradation, hydrophilicity, antibacterial activity and the drug release comparing to PLASCL20. Moreover, the simultaneous use of nHA and encapsulated triclosan (LATC30) compensated the negative effect of triclosan through increasing the possible cell attachment...
January 2, 2017: Carbohydrate Polymers
Yu-Rong Cheng, Zhi-Jie Sun, Gu-Zhen Cui, Xiaojin Song, Qiu Cui
Developing a strain with high docosahexaenoic acid (DHA) yield and stable fermenting-performance is an imperative way to improve DHA production using Aurantiochytrium sp., a microorganism with two fatty acid synthesis pathways: polyketide synthase (PKS) pathway and Type I fatty acid synthase (FAS) pathway. This study investigated the growth and metabolism response of Aurantiochytrium sp. CGMCC 6208 to two inhibitors of enoyl-ACP reductase of Type II FAS pathway (isoniazid and triclosan), and proposed a method of screening high DHA yield Aurantiochytrium sp...
November 2016: Enzyme and Microbial Technology
Yupeng He, Enguang Nie, Chengming Li, Qingfu Ye, Haiyan Wang
The increasing discharge of pharmaceuticals and personal care products (PPCPs) into the environment has generated serious public concern. The recent awareness of the environmental impact of this emerging class of pollutants and their potential adverse effects on human health have been documented in many reports. However, information regarding uptake and intracellular distribution of PPCPs in hydrophytes under hydroponic conditions, and potential human exposure is very limited. A laboratory experiment was conducted using (14)C-labeled triclosan (TCS) to investigate uptake and distribution of TCS in six aquatic plants (water spinach, purple perilla, cress, penny grass, cane shoot, and rice), and the subcellular distribution of (14)C-TCS was determined in these plants...
September 29, 2016: Environmental Pollution
Violeta Melinte, Tinca Buruiana, Andreea Chibac, Mihai Mares, Horia Aldea, Emil C Buruiana
OBJECTIVE: To achieve bisphenol A glycerolate dimethacrylate (BisGMA) analogs with reduced viscosity to be used in the formulation of dental adhesives containing biocidal components. METHODS: A series of low-viscosity BisGMA derivatives (η: 39-12Pas) modified with 30, 60 and, respectively 80mol% carboxylic acid units were synthesized and characterized. Hydrogen bonding interactions in our monomers, the photopolymerization behavior and implicitly the conversion degree (DC) for some experimental adhesive formulations containing acid-modified BisGMA, commercial BisGMA (only in F1-F3), triethyleneglycol dimethacrylate and 2-hydroxyethyl methacrylate were examined by FTIR spectroscopy...
September 23, 2016: Dental Materials: Official Publication of the Academy of Dental Materials
Nabil Shaikh, Saru Taujale, Huichun Zhang, Kateryna Artyushkova, Abdul-Mehdi S Ali, José M Cerrato
We investigated the reaction of manganese oxide [MnOx(s)] with phenol, aniline, and triclosan in batch experiments using X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, and aqueous chemistry measurements. Analyses of XPS high-resolution spectra suggest that the Mn(III) content increased 8-10% and the content of Mn(II) increased 12-15% in the surface of reacted MnOx(s) compared to the control, indicating that the oxidation of organic compounds causes the reduction of MnOx(s). Fitting of C 1s XPS spectra suggests an increase in the number of aromatic and aliphatic bonds for MnOx(s) reacted with organic compounds...
October 7, 2016: Environmental Science & Technology
Borui Pi, Dongliang Yu, Xiaoting Hua, Zhi Ruan, Yunsong Yu
During the last decade, an increasing amount of attention has focused on the potential threat of triclosan to both the human body and environmental ecology. However, the role of triclosan in the development of drug resistance and cross resistance is still in dispute ascribed to largely unknown of triclosan resistance mechanism. In this work, Acinetobacter baumannii MDR-ZJ06, a multidrug-resistant strain, was induced by triclosan, and the genomic variation and transcriptional levels were investigated, respectively...
September 24, 2016: Archives of Microbiology
Safa Ouerghemmi, Stéphanie Degoutin, Nicolas Tabary, Frédéric Cazaux, Mickaël Maton, Valérie Gaucher, Ludovic Janus, Christel Neut, Feng Chai, Nicolas Blanchemain, Bernard Martel
This work focuses on the relevance of antibacterial nanofibers based on a polyelectrolyte complex formed between positively charged chitosan (CHT) and an anionic hydroxypropyl betacyclodextrin (CD)-citric acid polymer (PCD) complexing triclosan (TCL). The study of PCD/TCL inclusion complex and its release in dynamic conditions, a cytocompatibility study, and finally the antibacterial activity assessment were studied. The fibers were obtained by electrospinning a solution containing chitosan mixed with PCD/TCL inclusion complex...
September 21, 2016: International Journal of Pharmaceutics
Lena Mutzner, Philipp Staufer, Christoph Ort
Wet-weather discharges contribute to anthropogenic micropollutant loads entering the aquatic environment. Thousands of wet-weather discharges exist in Swiss sewer systems, and we do not have the capacity to monitor them all. We consequently propose a model-based approach designed to identify critical discharge points in order to support effective monitoring. We applied a dynamic substance flow model to four substances representing different entry routes: indoor (Triclosan, Mecoprop, Copper) as well as rainfall-mobilized (Glyphosate, Mecoprop, Copper) inputs...
November 1, 2016: Water Research
Ji Yoon Song, Imteaz Ahmed, Pill Won Seo, Sung Hwa Jhung
The metal-organic framework (MOF) UiO-66 was synthesized in one step from zirconium chloride and isophthalic acid (IPA), together with the usual link material, terephthalic acid (TPA). UiO-66 with free -COOH can be obtained in a facile way by replacing up to 30% of the TPA with IPA. However, the chemical and thermal stability of the synthesized MOFs decreased with increasing IPA content used in the syntheses, suggesting an increase in the population of imperfect bonds in the MOFs because of the asymmetrical structure of IPA...
October 3, 2016: ACS Applied Materials & Interfaces
Marjo Renko, Niko Paalanne, Terhi Tapiainen, Matti Hinkkainen, Tytti Pokka, Sohvi Kinnula, Juha-Jaakko Sinikumpu, Matti Uhari, Willy Serlo
BACKGROUND: Surgical site infections (SSIs) are a pervasive problem in surgery. Sutures coated or impregnated with triclosan might reduce the occurrence of SSIs, but evidence of their efficacy is limited, especially in children. METHODS: We designed a randomised, double-blind, controlled trial in patients who underwent elective or daytime emergency surgery at Oulu University Hospital (Oulu, Finland). We included children younger than 18 years staying in the paediatric surgery and orthopaedics ward for any elective or emergency surgery during the daytime and with anticipated use of absorbing sutures...
September 19, 2016: Lancet Infectious Diseases
Abigail T Ntreh, Jon W Weeks, Logan M Nickels, Helen I Zgurskaya
: TriABC-OpmH is an efflux pump from Pseudomonas aeruginosa with an unusual substrate specificity and protein composition. When overexpressed, this pump confers a high level of resistance to biocide triclosan and the detergent SDS, which are commonly used in combinations for antimicrobial treatments. This activity requires an RND transporter TriC, an outer membrane channel OpmH and two periplasmic membrane fusion proteins TriA and TriB with non-equivalent functions. In the active complex, TriA is responsible for the recruitment of OpmH, while TriB is responsible for stimulation of the transporter TriC...
September 19, 2016: Journal of Bacteriology
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"