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https://www.readbyqxmd.com/read/28432972/assessment-of-the-bioavailability-and-depuration-of-uranium-cesium-and-thorium-in-snails-cantareus-aspersus-using-kinetics-models
#1
B Pauget, A Villeneuve, P O Redon, A Cuvier, A de Vaufleury
Uranium ore waste has led to soil contamination that may affect both environmental and soil health. To analyze the risk of metal transfer, metal bioavailability must be estimated by measuring biological parameters. Kinetic studies allow taking into account the dynamic mechanisms of bioavailability, as well as the steady state concentration in organisms necessary to take into account for relevant risk assessment. In this way, this work aims to model the snail accumulation and excretion kinetics of uranium (U), cesium (Cs) and thorium (Th)...
April 7, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28432963/health-hazards-of-child-labor-in-the-leather-products-and-surgical-instrument-manufacturing-industries-of-sialkot-pakistan
#2
Muhammad Junaid, Riffat Naseem Malik, De-Sheng Pei
Child labor is a major challenge in the developing countries and comprehensive health hazard identification studies on this issue are still lacking. Therefore, the current study is an effort to highlight the health concerns of child labor exposed in the key small scale industries of Sialkot, Pakistan. Our findings revealed jolting levels of heavy metals in the urine, blood, serum, saliva, and hair samples collected from the exposed children. For example, in the urine samples, Cd, Cr, Ni, and Pb were measured at the respective concentrations of 39...
April 19, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28432887/application-of-a-%C3%AE-rs-index-based-method-and-techno-economic-analysis-for-in-situ-treatment-of-137-cs-contaminated-soils-by-cement-barite-based-stabilisation-solidification
#3
Pietro P Falciglia, Stefano Romano, Federico G A Vagliasindi
This paper examines the application of cement (C)-barite (Ba) based-Stabilisation/Solidification (S/S) for the remediation of (137)Cs-contaminated soils, investigating the influence of soil: grout and C: Ba ratios on the shielding performance of the S/S mix assessed as gamma radiation shielding (γRS) index variation. Results from experiments were used to perform a novel approach and an economic analysis in order to calculate the effective dose reduction achievable by S/S and to assess the optimum quantities and costs of selected mixes, respectively...
April 19, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28432638/community-gardens-as-environmental-health-interventions-benefits-versus-potential-risks
#4
REVIEW
W K Al-Delaimy, M Webb
PURPOSE OF REVIEW: The purpose of this paper was to summarize current findings on community gardens relevant to three specific areas of interest as follows: (1) health benefits, (2) garden interventions in developing versus developed countries, and (3) the concerns and risks of community gardening. RECENT FINDINGS: Community gardens are a reemerging phenomenon in many low- and high-income urban neighborhoods to address the common risk factors of modern lifestyle...
April 21, 2017: Current Environmental Health Reports
https://www.readbyqxmd.com/read/28432507/study-of-the-potential-of-barnyard-grass-for-the-remediation-of-cd-and-pb-contaminated-soil
#5
Jianling Xu, Qiongyao Cai, Hanxi Wang, Xuejun Liu, Jing Lv, Difu Yao, Yue Lu, Wei Li, Yuanyuan Liu
In this study, the microwave digestion method was used to determine total cadmium (Cd) and lead (Pb) concentrations, the BCR method was used to determine different states of Cd and Pb, and atomic absorption spectroscopy (AAS) and inductively coupled plasma optical emission spectrometry (ICP-OES) were used to determine Cd and Pb concentrations in simulated soil and barnyard grass before and after planting barnyard grass to provide a theoretical basis for the remediation of Cd- and Pb-contaminated soil. The results showed that the bioconcentration factor changes with different Cd concentrations are relatively complex and that the removal rate increases regularly...
May 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28431369/the-temporal-paradox-of-hebbian-learning-and-homeostatic-plasticity
#6
REVIEW
Friedemann Zenke, Wulfram Gerstner, Surya Ganguli
Hebbian plasticity, a synaptic mechanism which detects and amplifies co-activity between neurons, is considered a key ingredient underlying learning and memory in the brain. However, Hebbian plasticity alone is unstable, leading to runaway neuronal activity, and therefore requires stabilization by additional compensatory processes. Traditionally, a diversity of homeostatic plasticity phenomena found in neural circuits is thought to play this role. However, recent modelling work suggests that the slow evolution of homeostatic plasticity, as observed in experiments, is insufficient to prevent instabilities originating from Hebbian plasticity...
April 18, 2017: Current Opinion in Neurobiology
https://www.readbyqxmd.com/read/28431356/heavy-metals-pollution-levels-and-children-health-risk-assessment-of-yerevan-kindergartens-soils
#7
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/28431347/improving-water-quality-in-china-environmental-investment-pays-dividends
#8
Yongqiang Zhou, Jianrong Ma, Yunlin Zhang, Boqiang Qin, Erik Jeppesen, Kun Shi, Justin D Brookes, Robert G M Spencer, Guangwei Zhu, Guang Gao
This study highlights how Chinese economic development detrimentally impacted water quality in recent decades and how this has been improved by enormous investment in environmental remediation funded by the Chinese government. To our knowledge, this study is the first to describe the variability of surface water quality in inland waters in China, the affecting drivers behind the changes, and how the government-financed conservation actions have impacted water quality. Water quality was found to be poorest in the North and the Northeast China Plain where there is greater coverage of developed land (cities + cropland), a higher gross domestic product (GDP), and higher population density...
April 14, 2017: Water Research
https://www.readbyqxmd.com/read/28429987/beyond-integrated-care
#9
Thomas Plochg, Stefania Ilinca, Mirko Noordegraaf
Integrated care tops the health care agenda. But more integration alone will not remedy the crisis in health care, and there is a danger in the increasingly prevalent conceptualization of care integration as a goal in itself rather than as an instrument for improving performance. Operating integrated care systems, staffed by an overly specialized medical workforce, is unsustainable in terms of human and financial resources and is likely to produce little benefit for patients with multi-morbidity. An alternative approach involves health care leaders going beyond integrated care and nurturing transformative change from within the medical workforce instead...
January 1, 2017: Journal of Health Services Research & Policy
https://www.readbyqxmd.com/read/28429852/anti-inflammatory-and-retinal-protective-effects-of-capsaicin-on-ischemia-induced-injuries-through-the-release-of-endogenous-somatostatin
#10
Jun Wang, Wenke Tian, Shuaiwei Wang, Wenqiang Wei, Dongdong Wu, Honggang Wang, Li Wang, Ruisheng Yang, Ailing Ji, Yanzhang Li
The mechanisms regarding the retinal protective and anti-inflammatory effects of capsaicin (CAP) remain unclear. Somatostatin is contained in CAP-sensitive sensory neurons, including nerve terminals, from which it can be released by capsaicin. The present study provides a novel neurohumoral regulatory mechanism for CAP-induced-endogenous somatostatin in a retinal ischemic-reperfusion (I/R) mouse model. CAP (0.5 mg kg(-1) ) was injected subcutaneously 5 min after I/R. A selective somatostatin-depleting agent, cysteamine, was applied subcutaneously 4 hours before the experiment to examine the effects of endogenous somatostatin...
April 21, 2017: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/28429319/biochemistry-and-physiology-of-heavy-metal-resistance-and-accumulation-in-euglena
#11
Rafael Moreno-Sánchez, Sara Rodríguez-Enríquez, Ricardo Jasso-Chávez, Emma Saavedra, Jorge D García-García
Free-living microorganisms may become suitable models for removal of heavy metals from polluted water bodies, sediments, and soils by using and enhancing their metal accumulating abilities. The available research data indicate that protists of the genus Euglena are a highly promising group of microorganisms to be used in bio-remediation of heavy metal-polluted aerobic and anaerobic acidic aquatic environments. This chapter analyzes the variety of biochemical mechanisms evolved in E. gracilis to resist, accumulate and remove heavy metals from the environment, being the most relevant those involving (1) adsorption to the external cell pellicle; (2) intracellular binding by glutathione and glutathione polymers, and their further compartmentalization as heavy metal-complexes into chloroplasts and mitochondria; (3) polyphosphate biosynthesis; and (4) secretion of organic acids...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28429296/diurnal-changes-in-transcript-and-metabolite-levels-during-the-iron-deficiency-response-of-rice
#12
Jamie Selby-Pham, Adrian Lutz, Laura T Moreno-Moyano, Berin A Boughton, Ute Roessner, Alexander A T Johnson
BACKGROUND: Rice (Oryza sativa L.) is highly susceptible to iron (Fe) deficiency due to low secretion levels of the mugineic acid (MA) family phytosiderophore (PS) 2'-deoxymugineic acid (DMA) into the rhizosphere. The low levels of DMA secreted by rice have proved challenging to measure and, therefore, the pattern of DMA secretion under Fe deficiency has been less extensively studied relative to other graminaceous monocot species that secrete high levels of PS, such as barley (Hordeum vulgare L...
December 2017: Rice
https://www.readbyqxmd.com/read/28428751/identification-of-nf-%C3%AE%C2%BAb-as-determinant-of-posttraumatic-stress-disorder-and-its-inhibition-by-the-chinese-herbal-remedy-free-and-easy-wanderer
#13
Chunlan Hong, Anja Schüffler, Ulrich Kauhl, Jingming Cao, Ching-Fen Wu, Till Opatz, Eckhard Thines, Thomas Efferth
Posttraumatic stress disorder (PTSD) is a mental disorder developing after exposure to traumatic events. Although psychotherapy reveals some therapeutic effectiveness, clinically sustainable cure is still uncertain. Some Chinese herbal formulae are reported to work well clinically against mental diseases in Asian countries, but the safety and their mode of action are still unclear. In this study, we investigated the mechanisms of Chinese remedy free and easy wanderer (FAEW) on PTSD. We used a reverse pharmacology approach combining clinical data to search for mechanisms of PTSD with subsequent in vitro verification and bioinformatics techniques as follows: (1) by analyzing microarray-based transcriptome-wide mRNA expression profiling of PTSD patients; (2) by investigating the effect of FAEW and the antidepressant control drug fluoxetine on the transcription factor NF-κB using reporter cell assays and western blotting; (3) by performing molecular docking and literature data mining based on phytochemical constituents of FAEW...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28428704/lead-poisoning-due-to-herbal-medications
#14
Shailja Chambial, Pankaj Bhardwaj, Abbas Ali Mahdi, Praveen Sharma
Lead ranks as one of the most serious environmental poisons all over the world amongst toxic heavy metals with no known biological function useful for the human body. A case of lead toxicity due to consumption of herbal medicine is being discussed. The case presented with gastrointestinal complaints and history of intake of herbal medicines for diabetes control for past 8 months. The analysis of the powdered herbal medicine procured from ayurveda practitioner was found to have high content of lead responsible for the lead toxicity...
June 2017: Indian Journal of Clinical Biochemistry: IJCB
https://www.readbyqxmd.com/read/28427272/biological-technologies-for-the-remediation-of-co-contaminated-soil
#15
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
#16
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/28426569/salve-and-burdock-a-safe-effective-amish-remedy-for-treatment-of-traumatic-wounds
#17
Mitchell D Flurry, Kelsie L Herring, Logan W Carr, Randy M Hauck, John D Potochny
BACKGROUND: Amish patients show a demonstrated preference for traditional, herbal remedies over modern medical interventions such as skin grafting. One such remedy is a mixture of Burn & Wound Ointment (B & W Ointment; Holistic Acres, LLC; Newcomerstown, Ohio) and steeped burdock leaves. Although both have demonstrated some antimicrobial and wound healing properties, burdock and/or the combination of B & W Ointment and burdock has never been studied to determine its purported ability to reduce pain, prevent infection, and accelerate wound healing...
May 2017: Advances in Skin & Wound Care
https://www.readbyqxmd.com/read/28426257/facial-eschar-following-a-single-application-of-black-salve
#18
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/28425297/new-approaches-for-itaconic-acid-production-bottlenecks-and-possible-remedies
#19
Richa Bafana, R A Pandey
Currently, growing attention is being devoted to the conversion of biomass into value-added products, such as itaconic acid (IA), which is considered as the cleanest alternative to petroleum-based acrylic acid. IA is an unsaturated dicarboxylic acid that is used as a building block chemical for the production of several value-added products such as poly-itaconic acid. IA and its derivatives have a wide range of potential applications in textile, paint, pharmaceutical and chemical industries. Presently, industries are producing IA on the large scale by fermentation from glucose...
April 20, 2017: Critical Reviews in Biotechnology
https://www.readbyqxmd.com/read/28425131/garlic-dermatitis-on-the-neck-of-an-infant-treated-for-nasal-congestion
#20
Amin Esfahani, Sarah L Chamlin
The health benefits of garlic (Allium sativum) as a naturopathic remedy have been well documented, but topical application of garlic has been linked to allergic and irritant contact dermatitis. We present a case of severe irritant contact dermatitis due to application of a fresh garlic necklace to the neck of infant for treatment of nasal congestion.
April 19, 2017: Pediatric Dermatology
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