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https://www.readbyqxmd.com/read/28431356/heavy-metals-pollution-levels-and-children-health-risk-assessment-of-yerevan-kindergartens-soils
#1
Gevorg Tepanosyan, Nairuhi Maghakyan, Lilit Sahakyan, Armen Saghatelyan
Children, the most vulnerable urban population group, are exceptionally sensitive to polluted environments, particularly urban soils, which can lead to adverse health effects upon exposure. In this study, the total concentrations of Ag, As, Ba, Cd, Co, Cr, Cu, Fe, Hg, Mn, Mo, Ni, Pb, Ti, V, and Zn were determined in 111 topsoil samples collected from kindergartens in Yerevan. The objectives of this study were to evaluate heavy metal pollution levels of kindergarten's soils in Yerevan, compare with national legal and international requirements on heavy metal contents in kindergarten soil, and assess related child health risk...
April 18, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28427272/biological-technologies-for-the-remediation-of-co-contaminated-soil
#2
Shujing Ye, Guangming Zeng, Haipeng Wu, Chang Zhang, Juan Dai, Jie Liang, Jiangfang Yu, Xiaoya Ren, Huan Yi, Min Cheng, Chen Zhang
Compound contamination in soil, caused by unreasonable waste disposal, has attracted increasing attention on a global scale, particularly since multiple heavy metals and/or organic pollutants are entering natural ecosystem through human activities, causing an enormous threat. The remediation of co-contaminated soil is more complicated and difficult than that of single contamination, due to the disparate remediation pathways utilized for different types of pollutants. Several modern remediation technologies have been developed for the treatment of co-contaminated soil...
April 21, 2017: Critical Reviews in Biotechnology
https://www.readbyqxmd.com/read/28426988/solar-photocatalytic-application-of-nbo2oh-as-alternative-photocatalyst-for-water-treatment
#3
Luana Márcia Bezerra Batista, Alexsandro Jhones Dos Santos, Djalma Ribeiro da Silva, Ana Paula de Melo Alves, Sergi Garcia-Segura, Carlos Alberto Martínez-Huitle
Water recycling and industrial effluents remediation are a hot topic of research to reduce the environmental impact of the human activity. Persistent organic pollutants are highly recalcitrant compounds with hazardous effects associated to their fate in water bodies. Several novel technologies have been developed during the last decades to deal with this novel contamination. However, the natural sources and idiosyncrasy of each country lead to the potential application of different technologies. In this context, we have focused on the development of phocotalytic treatment of solutions containing dyes using a novel photocatalytic material, the NbO2OH...
April 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28426257/facial-eschar-following-a-single-application-of-black-salve
#4
Dayne Laskey, Midori Tran
A previously healthy 86-year-old male was transported by ambulance to the trauma bay of the emergency department (ED) for profuse bleeding from the left temple. The ambulance crew raised concern that the volume and force of the bleed may suggest arterial involvement. The patient reported having applied a natural topical remedy to a mole two weeks prior at the recommendation of a naturopath. The patient described progressive blackening and swelling of the area in the days following the single application of the product...
April 20, 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28420137/modification-of-the-mycotoxin-deoxynivalenol-using-microorganisms-isolated-from-environmental-samples
#5
Nina M Wilson, Nicole McMaster, Dash Gantulga, Cara Soyars, Susan P McCormick, Ken Knott, Ryan S Senger, David G Schmale
The trichothecene mycotoxin deoxynivalenol (DON) is a common contaminant of wheat, barley, and maize. New strategies are needed to reduce or eliminate DON in feed and food products. Microorganisms from plant and soil samples collected in Blacksburg, VA, USA, were screened by incubation in a mineral salt media containing 100 μg/mL DON and analysis by gas chromatography mass spectrometry (GC/MS). Two mixed cultures derived from soil samples consistently decreased DON levels in assays using DON as the sole carbon source...
April 15, 2017: Toxins
https://www.readbyqxmd.com/read/28419963/acute-toxicity-and-anti-fatigue-activity-of-polysaccharide-rich-extract-from-corn-silk
#6
He-Peng Zhao, Yang Zhang, Zhuo Liu, Jiang-Yue Chen, Song-Yan Zhang, Xiu-Dong Yang, Hong-Li Zhou
The aim of this study was to evaluate the safety and potential of PCS as the anti-fatigue functional food. PCS was prepared by water extracting-alcohol precipitating method, and its chemical compositions of monosaccharide were analyzed. Then, acute toxicity and anti-fatigue activity of PCS were evaluated. PCS is composed of Rha, Arab, Xyl, Man, Glu, and Gal, its molar ratio is 0.17: 0.30: 0.26: 0.35: 1.00: 0.57. No mortality and general symptoms of toxicity were observed in the PCS treated mice (7.5, 15, and 20g/kg body weight), the body weight and food consumption were not significantly changed compared with the normal control group...
April 15, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28415154/annona-species-annonaceae-a-rich-source-of-potential-antitumor-agents
#7
REVIEW
Rosa Tundis, Jianbo Xiao, Monica R Loizzo
Plants have provided the basis of traditional medicine systems throughout the world for thousands of years and continue to yield molecules for new remedies. We analyzed studies published from 2009 to 2016 on the Annona species (Annonaceae), including A. coriacea, A. crassifolia, A. hypoglauca, A. muricata, A. squamosa, A. sylvatica, and A. vepretorum, as sources of potential antitumor agents. Here, we report and discuss the mechanisms of action and structure-activity relationships of the most active Annona constituents...
April 17, 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/28412310/increased-seizure-susceptibility-and-other-toxicity-symptoms-following-acute-sulforaphane-treatment-in-mice
#8
Katarzyna Socała, Dorota Nieoczym, Edyta Kowalczuk-Vasilev, Elżbieta Wyska, Piotr Wlaź
Activation of Nrf2 with sulforaphane has recently gained attention as a new therapeutic approach in the treatment of many diseases, including epilepsy. As a plant-derived compound, sulforaphane is considered to be safe and well-tolerated. It is widely consumed, also by patients suffering from seizure and taking antiepileptic drugs, but no toxicity profile of sulforaphane exists. Since many natural remedies and dietary supplements may increase seizure risk and potentially interact with antiepileptic drugs, the aim of our study was to investigate the acute effects of sulforaphane on seizure thresholds and activity of some first- and second-generation antiepileptic drugs in mice...
April 12, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28411144/management-of-sexuality-intimacy-and-menopause-symptoms-sims-in-ovarian-cancer-patients-expert-review
#9
REVIEW
Margaret Whicker, Jonathan Black, Gary Altwerger, Gulden Menderes, Jacqueline Feinberg, Elena Ratner
Issues of sexuality, intimacy, and early menopause significantly impact the quality of life of patients following the diagnosis and treatment of ovarian cancer. These are undertreated problems. Successful treatment requires the provider's awareness of the problem, ability to identify it, and willingness to treat it. Unfortunately many providers do not address these issues in the pre-treatment or perioperative period. Furthermore, patients do not often alert their providers to their symptoms. While systemic hormone therapy may improve many of the issues, they are not appropriate for all patients given their action on estrogen receptors...
April 11, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28406093/antiviral-activity-of-nobiletin-against-chikungunya-virus-in-vitro
#10
Shih-Chao Lin, Mei-Chun Chen, Shiming Li, Chi-Chen Lin, Tony T Wang
BACKGROUND: Chikungunya virus (CHIKV), a highly contagious re-emerging virus, is transmitted by infected mosquitoes. CHIKV is prevalent in tropical countries and is continuing to creep farther north into temperate areas. CHIKV is responsible for induction of Chikungunya Fever (CF) and severe joint stiffness with the capability of developing into bilateral and systemic arthralgia or even encephalitis. Despite the high morbidity rate, no approved antiviral drug is available. Therefore, an anti-CHIKV therapy is necessary to control this disease...
April 13, 2017: Antiviral Therapy
https://www.readbyqxmd.com/read/28402897/green-synthesis-of-a-magnetic-hybrid-adsorbent-cofe2o4-nom-removal-of-chromium-from-industrial-effluent-and-evaluation-of-the-catalytic-potential-of-recovered-chromium-ions
#11
Daiane R S Cruz, Bruna T J Santos, Graziele C Cunha, Luciane P C Romão
This work describes the removal of chromium ions from industrial effluent using a hybrid magnetic adsorbent, CoFe2O4/NOM, synthesized using water rich in natural organic matter. The hybrid obtained at ambient temperature (HbAmb) was calcined at 200, 400, and 800°C for 2h, and formation of the cobalt ferrite phase was confirmed by XRD, which indicated the presence of NOM in the structure of the material. Removal tests showed that HbAmb provided efficient removal of chromium at the natural pH of the effluent, while the other materials were effective at pH 6...
March 31, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28401142/comprehensive-survey-of-household-radon-gas-levels-and-risk-factors-in-southern-alberta
#12
Fintan K T Stanley, Siavash Zarezadeh, Colin D Dumais, Karin Dumais, Renata MacQueen, Fiona Clement, Aaron A Goodarzi
BACKGROUND: The inhalation of naturally occurring radon (222Rn) gas from indoor air exposes lung tissue to α-particle bombardment, a highly mutagenic form of ionizing radiation that damages DNA and increases the lifetime risk of lung cancer. We analyzed household radon concentrations and risk factors in southern Alberta, including Calgary, the third-largest Canadian metropolis. METHODS: A total of 2382 residential homes (2018 in Calgary and 364 in surrounding townships) from an area encompassing 82% of the southern Alberta population were tested for radon, per Health Canada guidelines, for at least 90 days (median 103 d) between 2013 and 2016...
January 2017: CMAJ Open
https://www.readbyqxmd.com/read/28397170/the-organohalide-respiring-bacterium-sulfurospirillum-multivorans-a-natural-source-for-unusual-cobamides
#13
REVIEW
Torsten Schubert
Cobamides ('complete' corrinoids) are essential for organohalide-respiring bacteria because they act as cofactors of reductive dehalogenases (RDases). RDases are the key enzymes in organohalide respiration, a process relevant for environmental remediation. More than a decade ago, the unusual norpseudo-B12 was identified as cofactor of the tetrachloroethene RDase (PceA) purified from the epsilonproteobacterium Sulfurospirillum multivorans. Since then, the question was raised whether or not the production of the uncommon cobamide is a specific adaptation to the requirements of PceA...
May 2017: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/28396855/radon-risk-and-remediation-a-psychological-perspective
#14
David Hevey
Although radon exposure in the home increases the risk of lung cancer, this risk can be managed. However, evidence indicates that testing for radon and subsequent home remediation rates are generally low in many countries. The present perspective outlines some key insights from psychological science that might account for sub-optimal radon protection. Psychological aspects of how the health risks posed by radon are perceived and managed are outlined. There is need to consider radon risk perception in terms of the (a) cognitive and emotional responses to radon and (b) social context in which the radon threat occurs...
2017: Frontiers in Public Health
https://www.readbyqxmd.com/read/28395860/application-of-natural-resource-valuation-concepts-for-development-of-sustainable-remediation-plans-for-groundwater
#15
John A Connor, Shawn Paquette, Thomas McHugh, Elaine Gie, Mark Hemingway, Gino Bianchi
This paper explores the application of natural resource assessment and valuation procedures as a tool for developing groundwater remediation strategies that achieve the objectives for health and environmental protection, in balance with considerations of economic viability and conservation of natural resources. The natural resource assessment process, as applied under U.S. and international guidelines, entails characterization of groundwater contamination in terms of the pre-existing beneficial services of the impacted resource, the loss of these services caused by the contamination, and the measures and associated costs necessary to restore or replace the lost services...
April 7, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28394361/effects-of-walnut-oil-on-lipid-profiles-in-hyperlipidemic-type-2-diabetic-patients-a-randomized-double-blind-placebo-controlled-trial
#16
M J Zibaeenezhad, P Farhadi, A Attar, A Mosleh, F Amirmoezi, A Azimi
BACKGROUND: The role of herbal medicine is now well documented in preventing and controlling diabetes mellitus. The main aim of this study was to evaluate the effects of walnut oil consumption on lipid profiles of hyperlipidemic patients with type 2 diabetes. METHODS: In a randomized, double-blind, placebo-controlled clinical trial, 100 hyperlipidemic type 2 diabetic patients aged 35-75 years were assigned to receive 15 cc Persian walnut oil or placebo every day for 90 days...
April 10, 2017: Nutrition & Diabetes
https://www.readbyqxmd.com/read/28384184/assessing-biosynthetic-potential-of-agricultural-groundwater-through-metagenomic-sequencing-a-diverse-anammox-community-dominates-nitrate-rich-groundwater
#17
William B Ludington, Thaddeus D Seher, Olin Applegate, Xunde Li, Joseph I Kliegman, Charles Langelier, Edward R Atwill, Thomas Harter, Joseph L DeRisi
BACKGROUND: Climate change produces extremes in both temperature and precipitation causing increased drought severity and increased reliance on groundwater resources. Agricultural practices, which rely on groundwater, are sensitive to but also sources of contaminants, including nitrate. How agricultural contamination drives groundwater geochemistry through microbial metabolism is poorly understood. METHODS: On an active cow dairy in the Central Valley of California, we sampled groundwater from three wells at depths of 4...
2017: PloS One
https://www.readbyqxmd.com/read/28382899/organizational-learning-strategies-and-verbal-memory-deficits-in-bipolar-disorder
#18
George C Nitzburg, Armando Cuesta-Diaz, Luz H Ospina, Manuela Russo, Megan Shanahan, Mercedes Perez-Rodriguez, Emmett Larsen, Sandra Mulaimovic, Katherine E Burdick
BACKGROUND: Verbal memory (VM) impairment is prominent in bipolar disorder (BD) and is linked to functional outcomes. However, the intricacies of VM impairment have not yet been studied in a large sample of BD patients. Moreover, some have proposed VM deficits that may be mediated by organizational strategies, such as semantic or serial clustering. Thus, the exact nature of VM break-down in BD patients is not well understood, limiting remediation efforts. We investigated the intricacies of VM deficits in BD patients versus healthy controls (HCs) and examined whether verbal learning differences were mediated by use of clustering strategies...
April 2017: Journal of the International Neuropsychological Society: JINS
https://www.readbyqxmd.com/read/28378313/microbial-degradation-of-chloroethenes-a-review
#19
Iva Dolinová, Martina Štrojsová, Miroslav Černík, Jan Němeček, Jiřina Macháčková, Alena Ševců
Contamination by chloroethenes has a severe negative effect on both the environment and human health. This has prompted intensive remediation activity in recent years, along with research into the efficacy of natural microbial communities for degrading toxic chloroethenes into less harmful compounds. Microbial degradation of chloroethenes can take place either through anaerobic organohalide respiration, where chloroethenes serve as electron acceptors; anaerobic and aerobic metabolic degradation, where chloroethenes are used as electron donors; or anaerobic and aerobic co-metabolic degradation, with chloroethene degradation occurring as a by-product during microbial metabolism of other growth substrates, without energy or carbon benefit...
April 5, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28374919/all-trans-retinoic-acid-ameliorates-arsenic-induced-oxidative-stress-and-apoptosis-in-the-rat-uterus-by-modulating-mapk-signaling-proteins
#20
Aniruddha Chatterjee, Urmi Chatterji
Exposure to arsenic leads to inhibition of the antioxidant defense mechanism of the body. Reactive oxygen species generated in response to arsenic causes reproductive failures in exposed females and also acts as an inducer of apoptosis. As a prospective remedial agent, all-trans retinoic acid (ATRA) was assessed for reversing arsenic-induced oxidative stress and apoptosis. Rats exposed to arsenic for 28 days were allowed to recover naturally or were treated simultaneously with ATRA for 28 days or up to 56 days...
April 4, 2017: Journal of Cellular Biochemistry
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