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Heavy metal screen

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https://www.readbyqxmd.com/read/29150881/genotoxicity-of-11-heavy-metals-detected-as-food-contaminants-in-two-human-cell-lines
#1
B Kopp, D Zalko, M Audebert
Heavy metals, such as arsenic (As), antimony (Sb), barium (Ba), cadmium (Cd), cobalt (Co), germanium (Ge), lead (Pb), nickel (Ni), tellurium (Te), and vanadium (V) are widely distributed in the environment and in the food chain. Human exposure to heavy metals through water and food has been reported by different international agencies. Although some of these heavy metals are essential elements for human growth and development, they may also be toxic at low concentrations due to indirect mechanisms. In this study, the genotoxic and cytotoxic properties of 15 different oxidation statuses of 11 different heavy metals were investigated using high-throughput screening (γH2AX assay) in two human cell lines (HepG2 and LS-174T) representative of target organs (liver and colon) for food contaminants...
November 18, 2017: Environmental and Molecular Mutagenesis
https://www.readbyqxmd.com/read/29127817/heavy-metals-detection-using-biosensor-cells-of-a-novel-marine-luminescent-bacterium-vibrio-sp-mm1-isolated-from-the-caspian-sea
#2
Mojtaba Mohseni, Jaber Abbaszadeh, Shima-Sadat Maghool, Mohammad-Javad Chaichi
Monitoring and assessing toxic materials which are being released into the environment along with wastewater is a growing concern in many industries. The current research describes a highly sensitive and rapid method for the detection of toxic concentrations of heavy metals in aquatic environments. Water samples were collected from southern coasts of the Caspian Sea followed by screening of luminescent bacteria. Phylogenetic analysis, including gene sequence of 16S rRNA, and biochemical tests were performed for identification of the isolate...
November 8, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29116456/soil-plant-transfer-models-for-metals-to-improve-soil-screening-value-guidelines-valid-for-s%C3%A3-o-paulo-brazil
#3
Sabrina N Dos Santos-Araujo, Frank A Swartjes, Kees W Versluijs, Fabio Netto Moreno, Luís R F Alleoni
In Brazil, there is a lack of combined soil-plant data attempting to explain the influence of specific climate, soil conditions, and crop management on heavy metal uptake and accumulation by plants. As a consequence, soil-plant relationships to be used in risk assessments or for derivation of soil screening values are not available. Our objective in this study was to develop empirical soil-plant models for Cd, Cu, Pb, Ni, and Zn, in order to derive appropriate soil screening values representative of humid tropical regions such as the state of São Paulo (SP), Brazil...
November 7, 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/29103419/marker-based-standardization-and-investigation-of-nutraceutical-potential-of-indian-propolis
#4
Nanaware Sadhana, Sathiyanarayanan Lohidasan, Kakasaheb Ramoo Mahadik
OBJECTIVE: Propolis, a resinous material collected by honey bees from various plants, has been explored globally for its medicinal and nutritional properties. However, research over Indian propolis is at infancy. This study was designed to investigate nutraceutical potential of Indian propolis. METHODS: In the present study, propolis extract was standardized with respect to markers caffeic acid phenethyl ester, caffeic acid, galangin, luteolin, curcumin, apigenin, pinocembrin and quercetin by new high-performance thin-layer chromatographic (HPTLC) methods...
November 2017: Journal of Integrative Medicine
https://www.readbyqxmd.com/read/29081456/lead-poisoning-caused-by-traditional-chinese-medicine-a-case-report-and-literature-review
#5
Guangmin Tang, Xiang Tu, Ping Feng
Traditional Chinese herbal medicine is widely used for primary health care worldwide as it mostly consists of herbs or herbal extracts known to be safe. However, owing to the intentional or unintentional addition to herbs of lead-containing bases or pastes, lead poisoning from traditional Chinese medicine (TCM) remains a serious issue. We report here a case of lead poisoning caused by long-term use of homemade TCM. A 66-year-old man was admitted for periumbilical pain and constipation. A detailed medication history revealed that the patient had been using homemade TCM for the past 8 months...
October 2017: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/29059628/co-selection-of-antibiotic-resistance-via-copper-shock-loading-on-bacteria-from-a-drinking-water-bio-filter
#6
Menglu Zhang, Lihua Chen, Chengsong Ye, Xin Yu
Heavy metal contamination of source water frequently occurred in developing countries as a result of accidents. To address the problems, most of the previous studies have focused on engineering countermeasures. In this study, we investigated the effects of heavy metals, particularly copper, on the development of antibiotic resistance by establishing a copper shock loading test. Results revealed that co-selection occurred rapidly within 6 h. Copper, at the levels of 10 and 100 mg/L, significantly increased bacterial resistance to the antibiotics tested, including rifampin, erythromycin, kanamycin, and a few others...
October 20, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29039319/heavy-metals-identification-and-exposure-at-workplace-environment-its-extent-of-accumulation-in-blood-of-iron-and-steel-recycling-foundry-workers-of-lahore-pakistan
#7
Muhammad Ahsan Riaz, Amtul Bari Tabinda Akhtar, Ayesha Riaz, Ghulam Mujtaba, Muhammad Ali, Beenish Ijaz
The determination of heavy metals in blood is an important occupational environmental toxicology screening procedure. The aim of study was to determine the concentrations of Pb, Cd, Cr and Ni in blood samples of iron and steel foundry workplace exposed workers under routine clinical laboratory conditions. The method was employed for the quantitative determination of lead, cadmium, chromium and nickel in workplace environment particulate matter blood samples from iron and steel foundry workers and in unexposed controls...
July 2017: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29034204/studies-on-analgesic-anti-inflammatory-activities-of-stem-and-roots-of-inula-cuspidata-c-b-clarke
#8
Sarvesh Kumar Paliwal, Bhawana Sati, Samriti Faujdar, Swapnil Sharma
The present study was carried out to evaluate analgesic and anti-inflammatory activities in Inula cuspidata stem and root extracts along with heavy metals estimation in stem and root powder. Stem and roots were extracted with chloroform (ICSCE, ICRCE) and methanol (ICSME, ICRME). Acute oral toxicity of all extracts was determined by OECD guidelines 425. Analgesic activity was investigated by using hot plate and acetic acid induced writhing models. Anti-inflammatory activity (acute) of all extracts was evaluated by carrageenan induced paw edema model...
October 2017: Journal of Traditional and Complementary Medicine
https://www.readbyqxmd.com/read/29018594/comparative-study-of-cd-uptake-and-tolerance-of-two-italian-ryegrass-lolium-multiflorum-cultivars
#9
Zhigang Fang, Laiqing Lou, Zhenglan Tai, Yufeng Wang, Lei Yang, Zhubing Hu, Qingsheng Cai
Cadmium (Cd) is one of the most toxic heavy metals and is difficult to be removed from contaminated soil and water. Italian ryegrass (Lolium multiflorum), as an energy crop, exhibits a valuable potential to develop Cd polluted sites due to its use as a biofuel rather than as food and forage. Previously, via a screening for Cd-tolerant ryegrass, the two most extreme cultivars (IdyII and Harukaze) with high and low Cd tolerance during seed germination, respectively, were selected. However, the underlying mechanism for Cd tolerance was not well investigated...
2017: PeerJ
https://www.readbyqxmd.com/read/28990146/a-preliminary-study-to-design-a-floating-treatment-wetland-for-remediating-acid-mine-drainage-impacted-water-using-vetiver-grass-chrysopogon-zizanioides
#10
Jeffrey D Kiiskila, Dibyendu Sarkar, Kailey A Feuerstein, Rupali Datta
Acid mine drainage (AMD) is extremely acidic, sulfate-rich effluent from abandoned or active mine sites that also contain elevated levels of heavy metals. Untreated AMD can contaminate surface and groundwater and pose severe ecological risk. Both active and passive methods have been developed for AMD treatment consisting of abiotic and biological techniques. Abiotic techniques are expensive and can create large amounts of secondary wastes. Passive biological treatment mainly consists of aerobic or anaerobic constructed wetlands...
October 8, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28963704/assessment-of-heavy-metal-tolerance-and-biosorptive-potential-of-klebsiella-variicola-isolated-from-industrial-effluents
#11
Abuzar Muhammad Afzal, Muhammad Hidayat Rasool, Muhammad Waseem, Bilal Aslam
Heavy metal contamination now a day is one of the major global environmental concerns. Textile effluents of Faisalabad Pakistan are heavily contaminated with heavy metals and demands to explore native microorganisms as effective bioremediation tool. Study aimed to isolate heavy metal tolerant bacteria from textile effluents of Faisalabad Pakistan and to evaluate their biosorptive potential. Out of 30 collected samples 13 isolates having metal tolerance potential against Ni and Co were screened out. Maximum tolerable concentration and multi metal resistance was determined...
September 29, 2017: AMB Express
https://www.readbyqxmd.com/read/28945077/a-target-lighted-dsdna-indicator-for-high-performance-monitoring-of-mercury-pollution-and-its-antagonists-screening
#12
Zhihe Qing, Lixuan Zhu, Xiaoxuan Li, Sheng Yang, Zhen Zou, Jingru Guo, Zhong Cao, Ronghua Yang
As well-known, the excessive discharge of heavy-metal mercury not only destroys the ecological environment, bust also leads to severe damage of human health after ingestion via drinking and bioaccumulation of food chains, and mercury ion (Hg(2+)) is designated as one of most prevalent toxic metal ions in drinking water. Thus, the high-performance monitoring of mercury pollution is necessary. Functional nucleic acids have been widely used as recognition probes in biochemical sensing. In this work, a carbazole derivative, ethyl-4-[3,6-bis(1-methyl-4-vinylpyridium iodine)-9H-carbazol -9-yl)] butanoate (EBCB), has been synthesized and found as a target-lighted DNA fluorescent indicator...
October 3, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28940054/framework-for-assessment-and-phytoremediation-of-asbestos-contaminated-sites
#13
Cédric Gonneau, Kinsey Miller, Sanjay K Mohanty, Rengyi Xu, Wei-Ting Hwang, Jane K Willenbring, Brenda B Casper
We examine the feasibility of phytoremediation as an alternative strategy to limit the exposure of asbestos in site with asbestos-containing materials. We collected soils from four locations from two sites-one with naturally occurring asbestos, and another, a superfund site, where asbestos-containing materials were disposed over decades-and performed ecotoxicology tests. We also performed two experiments with crop cultivar and two grasses from serpentine ecotype and cultivar to determined best choice for phytoremediation...
September 22, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28933031/screening-isolation-and-molecular-identification-of-biodegrading-mycobacteria-from-iranian-ecosystems-and-analysis-of-their-biodegradation-activity
#14
Davood Azadi, Hasan Shojaei, Sina Mobasherizadeh, Abass Daei Naser
Anthropogenic origin pollutants including pesticides, heavy metals, pharmaceuticals and industry chemicals impose many risks to human health and environment and bioremediation has been considered the strategy of choice to reduce the risk of hazardous chemicals. In the current study, we aimed to screen and characterize mycobacteria from the diverse range of Iranian aquatic and terrestrial ecosystems with harsh and unfavorable environmental conditions that can be utilized for biodegradation of target pollutants...
September 20, 2017: AMB Express
https://www.readbyqxmd.com/read/28914778/screening-for-autochthonous-phytoextractors-in-a-heavy-metal-contaminated-coal-mining-area
#15
Kuangjia Li, Zijian Lun, Lin Zhao, Qilong Zhu, Yansheng Gu, Manzhou Li
In order to protect public health and crops from soil heavy metal (HM) contamination at a coal mining area in Henan, central China, HM pollution investigation and screening of autochthonous HM phytoextractors were conducted. The concentrations of cadmium (Cd), lead (Pb), copper (Cu) and zinc (Zn) in surface soils exceeded the corresponding local background values and the China National Standard (CNS). The maximum potential ecological risk (RI) was 627.30, indicating very high ecological risk. The monomial risk of Cd contributed the most to the RI, varying from 85...
September 15, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28841996/disposable-sputtered-bismuth-screen-printed-sensors-for-voltammetric-monitoring-of-cadmium-and-lead-in-atmospheric-particulate-matter-samples
#16
M R Palomo-Marín, F Rueda-Holgado, J Marín-Expósito, E Pinilla-Gil
We report here the use of commercial screen-printed disposable sensors comprising a sputtered bismuth working electrode, a silver pseudo reference electrode and a carbon auxiliary electrode (whole set referred as BispSPE), as a new and advantageous alternative for reliable and convenient monitoring of Cd and Pb in atmospheric particulate matter (PM10 fraction) by anodic stripping voltammetry after acid digestion. After a detailed exploration of surface composition and depth profiles of the BispSPE by SEM, EDX, XPS and EIS, chemical and instrumental variables have been optimized to develop a reliable method capable of measuring Cd and Pb with detection limits of 11...
December 1, 2017: Talanta
https://www.readbyqxmd.com/read/28836031/a-field-screening-test-for-the-assessment-of-concentrations-and-mobility-of-potentially-toxic-elements-in-soils-a-case-study-on-urban-soils-from-rome-and-novi-sad
#17
Maria Rita Montereali, Valentina Pinto, Francesca Schiavella, Giovanna Armiento, Massimo Angelone, Cinzia Crovato, Maja Manojlović, Ranko Čabilovski, Carlo Cremisini
The increasing demand for environmental pollution control results in the development and use of new procedures for the determination of dangerous chemicals. Simple screening methods, which can be used directly in the field for a preliminary assessment of soil contamination, seem to be extremely advantageous. In our laboratory, we developed and optimized a rapid test for a preliminary evaluation of both the concentration and the mobility of some potentially toxic metals in soils. This screening test consists of a single extraction of the soil sample with a buffer solution, followed by the titration of the extracted solution with dithizone to determine the contents of bi-valent heavy metals (such as Pb, Cu, Zn, and Cd)...
August 23, 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28812956/toxicity-identification-and-evaluation-for-the-effluent-from-a-nonmetallic-mineral-mining-facility-in-korea-using-d-magna
#18
Sungjong Lee, Hongjoo Ha, JinKyung Hong, Guyoung Kang, Chunsang Hong
Industrial wastewater has attracted increasing attention in recent years because of its impact on ecosystems and human health. Whole-effluent tests are generally used to monitor toxicities of unknown chemicals and conventional pollutants from industrial effluent discharges. This study described identification evaluation (TIE) procedures to determine the acute toxicity of a nonmetallic mineral mining facility effluent that was toxic to Daphnia magna. In the characterization step (TIE phase I), toxic effects of heavy metals, organic compounds, oxidants, volatile organic compounds, suspended solids, and ammonia were screened...
January 1, 2017: Toxicology and Industrial Health
https://www.readbyqxmd.com/read/28806672/a-novel-approach-for-rapidly-and-cost-effectively-assessing-toxicity-of-toxic-metals-in-acidic-water-using-an-acidophilic-iron-oxidizing-biosensor
#19
Shih-Hung Yang, Kuo-Chih Cheng, Vivian Hsiu-Chuan Liao
Contamination by heavy metals and metalloids is a serious environmental and health concern. Acidic wastewaters are often associated with toxic metals which may enter and spread into agricultural soils. Several biological assays have been developed to detect toxic metals; however, most of them can only detect toxic metals in a neutral pH, not in an acidic environment. In this study, an acidophilic iron-oxidizing bacterium (IOB) Strain Y10 was isolated, characterized, and used to detect toxic metals toxicity in acidic water at pH 2...
November 2017: Chemosphere
https://www.readbyqxmd.com/read/28802093/clinical-aspects-of-opium-adulterated-with-lead-in-iran-a-review
#20
REVIEW
Samira Alinejad, Jan Aaseth, Mohammad Abdollahi, Hossein Hassanian-Moghaddam, Omid Mehrpour
Adulteration of drugs with poisonous substances during production or consumption has caused numerous health problems. Among contaminants that have the potential of producing poisonous effects are the heavy metals lead, arsenic and thallium that make up an important group of toxic substances. The emergence of these new health problems related to opioid abuse has precipitated this MiniReview on the status of the most hazardous and common opioid adulterants. In fact, adulterated opium is a major public health problem and can threaten the health of users...
August 12, 2017: Basic & Clinical Pharmacology & Toxicology
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