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https://www.readbyqxmd.com/read/28938783/phytochemicals-reduce-aflatoxin-induced-toxicity-in-chicken-embryos
#1
Hsin-Bai Yin, Chi-Hung Chen, Michael J Darre, Ann M Donoghue, Dan J Donoghue, Kumar Venkitanarayanan
Aflatoxins (AF) are toxic metabolites produced by molds, Aspergillus flavus and Aspergillus parasiticus, which frequently contaminate poultry feed ingredients. Ingestion of AF-contaminated feed by chickens leads to deleterious effects, including decreased bird performance and reduced egg production. Moreover, AF residues in fertilized eggs result in huge economic losses by decreasing embryo viability and hatchability. This study investigated the efficacy of 2 generally recognized as safe phytochemicals, namely carvacrol (CR) and trans-cinnamaldehyde (TC), in protecting chicken embryos from AF-induced toxicity...
October 1, 2017: Poultry Science
https://www.readbyqxmd.com/read/28938770/application-of-bacteriophages-to-reduce-salmonella-contamination-on-workers-boots-in-rendering-processing-environment
#2
C Gong, X Jiang, J Wang
Workers' boots are considered one of the re-contamination routes of Salmonella for rendered meals in the rendering-processing environment. This study was conducted to evaluate the efficacy of a bacteriophage cocktail for reducing Salmonella on workers' boots and ultimately for preventing Salmonella re-contamination of rendered meals. Under laboratory conditions, biofilms of Salmonella Typhimurium avirulent strain 8243 formed on rubber templates or boots were treated with a bacteriophage cocktail of 6 strains (ca...
October 1, 2017: Poultry Science
https://www.readbyqxmd.com/read/28938765/advanced-oxidation-process-sanitization-of-hatching-eggs-reduces-salmonella-in-broiler-chicks
#3
A C Rehkopf, J A Byrd, C D Coufal, T Duong
The microbial quality of eggs entering the hatchery is an important critical control point for biosecurity, pathogen reduction, and food safety programs in poultry production. Developing interventions to reduce Salmonella contamination of eggs is important to improving the microbial food safety of poultry and poultry products. The hydrogen peroxide (H2O2) and ultraviolet light (UV) Advanced Oxidation Process (AOP) has been previously demonstrated to be effective in reducing Salmonella on the surface of experimentally contaminated eggs...
October 1, 2017: Poultry Science
https://www.readbyqxmd.com/read/28938452/dose-specific-effects-of-di-isononyl-phthalate-on-the-endocannabinoid-system-and-on-liver-of-female-zebrafish
#4
Isabel Forner-Piquer, Francesca Maradonna, Giorgia Gioacchini, Stefania Santangeli, Marco Allarà, Fabiana Piscitelli, Hamid R Habibi, Vincenzo Di Marzo, Oliana Carnevali
Phthalates, used as plasticizers, have become a ubiquitous contaminant and have been reported for their potential to induce toxicity in living organisms. Among them, the Di-isononyl phthalate (DiNP) has been recently used to replace the bis(2-ethylhexyl) phthalate (DEHP). Nowadays, there is evidence that DiNP is an Endocrine Disrupting Chemical (EDC), however little is known about its effects on the Endocannabinoid System (ECS) and lipid metabolism. Hence, the aim of our study was to investigate the effects of DiNP on the ECS in zebrafish liver and brain and on hepatic lipid storage...
August 14, 2017: Endocrinology
https://www.readbyqxmd.com/read/28938329/mandibular-osteomyelitis-and-cervical-lymphadenitis-due-to-mycobacterium-abscessus-surgical-management-of-a-pediatric-cohort-with-a-shared-epidemiologic-exposure
#5
Peter W Thompson, Joseph K Williams
BACKGROUND: Mycobacterium abscessus has been implicated as the cause of various infections in the setting of healthcare-related "outbreaks." Mandibular osteomyelitis caused by M abscessus is exceedingly rare, with only 1 patient reported in the literature. The authors describe the surgical management of 12 pediatric patients with M abscessus-related mandibular osteomyelitis and cervical lymphadenitis caused by exposure to contaminated water at a regional dental clinic. METHODS: Following institutional review board approval, new suspected patients were reviewed and followed prospectively...
September 21, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28938209/interactions-between-biogenic-selenium-nanoparticles-and-goethite-colloids-and-consequence-for-remediation-of-elemental-mercury-contaminated-groundwater
#6
Xiaonan Wang, Daoyong Zhang, Haifeng Qian, Yan Liang, Xiangliang Pan, Geoffrey Michael Gadd
Ubiquitous colloidal minerals such as goethite can have a significant impact on the performance of nanoparticles-based groundwater remediation due to aggregation. Heteroaggregation and retention of Se nanoparticles (SeNPs) by goethite in groundwater, and its impact on Hg(0) remediation by SeNPs were investigated in this study. In order to mitigate the adverse effects of aggregation, the effects of bacterial extracellular polymeric substances (EPS) on the stability of SeNPs and Hg(0) sequestration using SeNPs were also evaluated...
September 19, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28938208/effects-of-process-operating-conditions-on-the-autotrophic-denitrification-of-nitrate-contaminated-groundwater-using-bioelectrochemical-systems
#7
D Cecconet, M Devecseri, A Callegari, A G Capodaglio
Nitrates have been detected in groundwater worldwide, and their presence can lead to serious groundwater use limitations, especially because of potential health problems. Amongst different options for their removal, bioelectrochemical systems (BESs) have achieved promising results; in particular, attention has raised on BES-driven autotrophic denitrification processes. In this work, the performance of a microbial electrolysis cell (MEC) for groundwater autotrophic denitrification, is assessed in different conditions of nitrate load, hydraulic retention time (HRT) and process configuration...
September 19, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28938207/zinc-oxide-nanoparticles-in-predicted-environmentally-relevant-concentrations-leading-to-behavioral-impairments-in-male-swiss-mice
#8
Joyce Moreira de Souza, Bruna de Oliveira Mendes, Abraão Tiago Batista Guimarães, Aline Sueli de Lima Rodrigues, Thales Quintão Chagas, Thiago Lopes Rocha, Guilherme Malafaia
Although the potential neurotoxic effects from the exposure to zinc oxide nanoparticles (ZnO NPs) on humans and on experimental models have been reported in previous studies, the effects from the exposure to environmentally relevant concentrations of them remain unclear. Thus, the aim of the present study is to investigate the effects from the exposure to environmentally relevant concentrations of ZnO NPs on the behavior of male Swiss mice. The animals were daily exposed to environmentally relevant concentrations of ZnO NPs (5...
September 19, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28938202/effect-of-different-diode-laser-wavelengths-on-root-dentin-decontamination-infected-with-enterococcus-faecalis
#9
Caroline Cristina Borges, Carlos Estrela, Fabiane Carneiro Lopes, Regina Guenka Palma-Dibb, Jesus Djalma Pecora, Cyntia Rodrigues De Araújo Estrela, Manoel Damião de Sousa-Neto
The objective of this study was to evaluate the antibacterial effect and the ultrastructural alterations of diode laser with different wavelengths (808nm and 970nm) and its association with irrigating solutions (2.5% sodium hypochlorite and 2% chlorhexidine) in root dentin contaminated by a five days biofilm. Thirteen uniradicular teeth were sectioned into 100 dentin intraradicular blocks. Initially, the blocks were immersed for 5min in 17% EDTA and washed with distilled water for 5min, then samples were sterilized for 30min at 120°C...
September 13, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28938196/sorption-of-uranium-vi-onto-hydrous-ferric-oxide-modified-zeolite-assessment-of-the-effect-of-ph-contact-time-temperature-selected-cations-and-anions-on-sorbent-interactions
#10
Pfano Mathews Nekhunguni, Nikita Tawanda Tavengwa, Hlanganani Tutu
Zeolites are commonly used as adsorbents for metal removal in most applications e.g. in wastewater. However, the ubiquity of iron in such systems may, in the long-term, distort the true interactions and mechanisms of contaminant removal as a result of modification of the zeolite surface. In this study, this potential phenomenon was assessed for the removal of uranium(VI) from aqueous solution by hydrous ferric oxide-modified zeolite (HFOMZ). This was prepared by precipitating iron hydroxide (the common precipitate of iron in aqueous systems) onto zeolite...
September 19, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28938171/behavior-of-radioactive-cesium-during-incineration-of-radioactively-contaminated-wastes-from-decontamination-activities-in-fukushima
#11
Hiroshi Fujiwara, Hidetoshi Kuramochi, Kazutaka Nomura, Tomoharu Maeseto, Masahiro Osako
Large volumes of decontamination wastes (DW) generated by off-site decontamination activities in Fukushima Prefecture have been incinerated since 2015. The behavior of radioactive cesium during incineration of DW was investigated at a working incineration plant. The incineration discharged bottom ash (BA) and fly ash (FA) with similar levels of radiocesium, and the leachability of the radiocesium from both types of ash was very low (<1%). These results are significantly different from those obtained for the incineration of contaminated municipal solid waste (CMSW) reported in earlier studies...
September 18, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28938141/amendment-damages-the-function-of-continuous-flooding-in-decreasing-cd-and-pb-uptake-by-rice-in-acid-paddy-soil
#12
Xinxin Ye, Hongying Li, Ligan Zhang, Rushan Chai, Renfeng Tu, Hongjian Gao
Combinations of remediation technologies are needed to solve the problem of soil contamination in paddy rice, due to multiple potential toxic elements (PTEs). Two potential mitigation methods, water management and in-situ remediation by soil amendment, have been widely used in treatment of PTE-polluted paddy soil. However, the interactive relationship between soil amendment and water management, and its influence on the accumulation of PTEs in rice are poorly understood. Greenhouse pot experiments were conducted to examine the effects of phosphate amendment on Cd and Pb availability in soil and their influence on Cd and Pb uptake into rice, on Fe and P availability in soil, and on the alteration of Fe amount and compartment on root surface among different water management strategies...
September 19, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28937894/microbiologic-evaluation-of-cotton-and-polytetrafluoroethylene-ptfe-tape-as-endodontic-spacer-materials-in-primary-molars-an-in-vivo-study
#13
Attiguppe Ramasetty Prabhakar, Kratika Dixit, O S Raju
OBJECTIVE: PTFE tape, which is commonly used as plumber's tape is an inorganic, non-fibrous, ribbon like material. The aim of this study was to evaluate PTFE tape as endodontic spacer material and to compare it with commonly used spacer material that is cotton, in primary teeth. STUDY DESIGN: Seventeen children undergoing pulpectomy of lower second primary molar bilaterally were included in the study. Cotton and PTFE tape were placed as spacers on each side randomly...
September 22, 2017: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28937856/detection-of-selected-trace-elements-in-yogurt-components
#14
Marcela Capcarova, Lubos Harangozo, Tomas Toth, Loretta Schwarczova, Alica Bobkova, Robert Stawarz, Alessandra Guidi, Peter Massanyi
The objective of this study was to determine the concentrations of Cu, Cd, Pb, Mn, Cr, Co, Ni, Zn, and Hg in the white and fruit parts of commercially available yogurts (n = 30) from Nitra markets (Slovak Republic). The results were correlated to determine their relationships. Three yogurt fruit flavors were chosen and tested, strawberry (n = 10), blueberry (n = 10), and cherry (n = 10). The elements were analyzed using atomic absorption spectrophotometry. Higher concentrations of toxic elements, such as Cd and Pb, were found in the fruit parts of the yogurt, and in some cases, the tolerable limit was exceeded...
September 22, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/28937850/environmental-transport-of-endogenous-dairy-manure-estrogens
#15
Inna E Popova, Matthew J Morra
Although estrogens originating from dairy manure applied to agricultural soils as a fertilizer can potentially contaminate surface water and groundwater, the variables that control transport are poorly understood. Our objective was to assess the potential for off-site movement of endogenous dairy cattle estrogens when manure is applied on fields at agronomically relevant fertilization rates. Estrone (E1), 17α-estradiol (α-E2), and 17β-estradiol (β-E2) were used in laboratory sorption, desorption, and transformation incubations with both manure and an agriculturally relevant soil...
September 22, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/28937751/high-precision-simultaneous-18-o-16-o-13-c-12-c-and-17-o-16-o-analyses-for-%C3%A2%C2%B5g-quantities-of-caco3-by-tunable-infrared-laser-absorption-spectroscopy
#16
Saburo Sakai, Shinichi Matsuda, Toshihide Hikida, Akio Shimono, Barry J McManus, Mark S Zahniser, David D Nelson, David Dettman, Danzhou Yang, Naohiko Ohkouchi
Stable isotope ratios ((18)O/(16)O, (13)C/(12)C and (17)O/(16)O) in carbonates have contributed greatly to understanding of Earth and planetary systems, climates, and history. Current methods for measuring isotopologues of CO2 derived from CaCO3 are primarily gas-source isotope ratio mass spectroscopy (IRMS). However, IRMS has drawbacks, such as mass overlap by multiple CO2 isotopologues and contaminants, the requirement of careful sample purification, and use of major instrumentation needing permanent installation and a high power electrical supply...
September 22, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28937637/adsorption-mechanisms-of-dodecylbenzene-sulfonic-acid-by-corn-straw-and-poplar-leaf-biochars
#17
Nan Zhao, Xixiang Yang, Jing Zhang, Ling Zhu, Yizhong Lv
Biochar is an eco-friendly, renewable, and cost-effective material that can be used as an adsorbent for the remediation of contaminated environments. In this paper, two types of biochar were prepared through corn straw and poplar leaf pyrolysis at 300 °C and 700 °C (C300, C700, P300, P700). Brunaer-Emmett-Teller N₂ surface area, scanning electron microscope, elemental analysis, and infrared spectra were used to characterize their structures. These biochars were then used as adsorbents for the adsorption of dodecylbenzene sulfonic acid (DBSA)...
September 22, 2017: Materials
https://www.readbyqxmd.com/read/28937586/monitoring-the-temporal-expression-of-genes-involved-in-ochratoxin-a-production-of-aspergillus-carbonarius-under-the-influence-of-temperature-and-water-activity
#18
Iliada K Lappa, Dimosthenis Kizis, Efstathios Z Panagou
The objective of this study was to investigate the effect of environmental factors, namely temperature and water activity, on genes involved in the regulation of ochratoxin A (OTA) production over time. For this purpose, the previously characterized toxigenic Aspergilluscarbonarius Ac29 isolate from Greek vineyards and the A. carbonarius ITEM 5010 reference strain were subjected to combined temperature and water activity (aw) treatments to study OTA production and relative gene expression. The fungal isolates were grown on a synthetic grape juice liquid medium (SGM) under different temperature (20 °C, 25 °C and 30 °C) and aw (0...
September 22, 2017: Toxins
https://www.readbyqxmd.com/read/28936873/biochemical-characterization-of-arsi-a-novel-c-as-lyase-for-degradation-of-environmental-organoarsenicals
#19
Shashank S Pawitwar, Venkadesh S Nadar, Ashoka Kandegedara, Timothy L Stemmler, Barry P Rosen, Masafumi Yoshinaga
Organoarsenicals such as the methylarsenical methylarsenate (MAs(V)) and aromatic arsenicals including roxarsone (4-hydroxy-3-nitrobenzenearsenate or Rox(V)) have been extensively used as an herbicide and growth enhancers in animal husbandry, respectively. They undergo environmental degradation to more toxic inorganic arsenite (As(III)) that contaminates crops and drinking water. We previously identified a bacterial gene (arsI) responsible for aerobic demethylation of methylarsenite (MAs(III)). The gene product, ArsI, is an Fe(II)-dependent extradiol dioxygenase that cleaves the carbon-arsenic (C-As) bond in MAs(III) and in trivalent aromatic arsenicals...
September 22, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28936805/compound-specific-isotopic-and-congener-specific-analyses-of-polychlorinated-biphenyl-in-the-heat-medium-and-rice-oil-of-the-yusho-incident
#20
Takashi Miyawaki, Mari Sugihara, Shusaku Hirakawa, Tsuguhide Hori, Jumboku Kajiwara, Susumu Katsuki, Chikage Mitoma, Masutaka Furue
Compound-specific isotope analysis (CSIA) can be used to examine the source and transformation processes of organic pollutants in the environment. We performed a carbon stable isotope analysis of polychlorinated biphenyl (PCB) congeners in the PCB heat-transfer medium (heat medium) and the original Kanechlor-400 (KC-400, a commercial brand of PCBs) involved in the Yusho incident. The main purpose is to investigate whether isotope fractionation occurred in the rice oil deodorization process that caused the incident...
September 21, 2017: Environmental Science and Pollution Research International
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