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chromium and nickel toxicity

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https://www.readbyqxmd.com/read/29157887/spatial-patterns-of-heavy-metal-accumulation-in-sediments-and-macrophytes-of-bellandur-wetland-bangalore
#1
T V Ramachandra, P B Sudarshan, M K Mahesh, S Vinay
Heavy metals are one among the toxic chemicals and accumulation in sediments and plants has been posing serious health impacts. Wetlands aid as kidneys of the landscape and help in remediation through uptake of nutrients, heavy metals and other contaminants. The analyses of macrophytes and sediment samples help in evaluating pollution status in aquatic environment. In this study concentration of six heavy metals (Cadmium (Cd), Chromium (Cr), Copper (Cu), Nickel (Ni), Lead (Pb) and Zinc (Zn)) were assessed in sediment and dominant macrophyte samples collected from Bellandur Lake, largest Lake of Bangalore, India...
November 17, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/29115570/luteolin-inhibits-multi-heavy-metal-mixture-induced-hl7702-cell-apoptosis-through-downregulation-of-ros-activated-mitochondrial-pathway
#2
Yafei Wang, Hong Su, Xin Song, Samuel Selorm Fiati Kenston, Jinshun Zhao, Yuanliang Gu
With the rapid economic development in recent years, China is facing a great challenge due to heavy metal pollution. The heavy metals may enter the human body through ingestion of aqua products to cause great health risks. In the present study, the inhibitory effects of luteolin on the combined toxicity of multi-heavy metals (including zinc, manganese, lead, copper, cadmium, mercury, chromium and nickel) were investigated in HL7702 hepatocyte cells. An MTT assay demonstrated that 20 µM luteolin significantly alleviated the multi-heavy metal mixture-induced cell death and morphological changes...
October 27, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29103395/evaluation-of-trace-element-status-of-organic-dairy-cattle
#3
I Orjales, C Herrero-Latorre, M Miranda, F Rey-Crespo, R Rodríguez-Bermúdez, M López-Alonso
The present study aimed to evaluate trace mineral status of organic dairy herds in northern Spain and the sources of minerals in different types of feed. Blood samples from organic and conventional dairy cattle and feed samples from the respective farms were analysed by inductively coupled plasma mass spectrometry to determine the concentrations of the essential trace elements (cobalt (Co), chromium (Cr), copper (Cu), iron (Fe), iodine (I), manganese (Mn), molybdenum (Mo), nickel (Ni), selenium (Se) and zinc (Zn)) and toxic trace elements (arsenic (As), cadmium (Cd), mercury (Hg) and lead (Pb))...
November 6, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/29078166/encapsulation-of-living-bacteria-in-electrospun-cyclodextrin-ultrathin-fibers-for-bioremediation-of-heavy-metals-and-reactive-dye-from-wastewater
#4
Nalan Oya San Keskin, Asli Celebioglu, Omer Faruk Sarioglu, Tamer Uyar, Turgay Tekinay
Cyclodextrins (CD) are cyclic oligosaccharides produced from the enzymatic degradation of starch as a white powder form; on the other hand, they can be transformed into ultrathin electrospun fiber form by electrospinning technique. The electrospun cyclodextrin fibers (CD-F) can be quite attractive materials to encapsulate bacteria for bioremediation purposes. For instance, CD-F not only serve as a carrier matrix but also it serves as a feeding source for the encapsulated bacteria. In the present study, we demonstrate a facile approach by encapsulation of bacteria into CD-F matrix for wastewater treatment application...
October 18, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29051458/heavy-metal-pollution-of-chari-river-water-during-the-crossing-of-n-djamena-chad
#5
N'garam Nambatingar, Yohann Clement, Alain Merle, Tchadanaye New Mahamat, Pierre Lanteri
This study was carried out to identify and assess the water quality of the Chari River. The Chari, 1200 km long, is Chad's major water source. Municipal sewage, industrial wastewater discharge, and seasonal run-off from agriculture are regularly fed into the river. Several trace metals such as Cu, Zn, Fe, Ni, Cr, Mn, and Cd, were measured in different sampling stations located along the Chari River at N'Djamena in different campaigns from 2008 to 2010. Overall, manganese, zinc, chromium, and copper concentration levels were mainly in the range of the permissible limits prescribed by WHO guidelines (WHO 2011)...
October 12, 2017: Toxics
https://www.readbyqxmd.com/read/28994612/metal-concentrations-in-samples-of-frozen-cephalopods-cuttlefish-octopus-squid-and-shortfin-squid-an-evaluation-of-dietary-intake
#6
D Sangiuliano, C Rubio, A J Gutiérrez, D González-Weller, C Revert, A Hardisson, E Zanardi, S Paz
Cephalopods are an important source of nutrients and some of the most widely consumed marine foods. However, because of contamination of the oceans and the bioaccumulative nature of toxic metals, these foods may pose a health risk. For this reason, the concentrations of some trace elements (chromium [Cr], lithium, strontium [Sr], copper [Cu], and nickel) and toxic metals (aluminum [Al], cadmium, and lead) were determined in 65 frozen samples of cuttlefish, octopus, common squid, and shortfin squid by inductively coupled plasma optical emission spectrometry to evaluate dietary intake and toxic risk...
October 10, 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28988324/potential-sex-differences-relative-to-autism-spectrum-disorder-and-metals
#7
REVIEW
Aisha S Dickerson, Ran S Rotem, MacKinsey A Christian, Vy T Nguyen, Aaron J Specht
PURPOSE OF REVIEW: This study aims to summarize the current body of literature on the relationship between various toxic metals exposures (i.e., aluminum, antimony, arsenic, beryllium, cadmium, chromium, lead, manganese, and nickel) and autism spectrum disorder (ASD), with a focus on potential sex differences in these associations. RECENT FINDINGS: Sex differences in ASD diagnosis and mutagenic effects of toxic exposures indicate that sex differences may play a major part in the causal relationship of any potential associations seen; however, we were only able to find three studies that reported on sex differences in observed associations with toxic metals exposure and ASD...
December 2017: Current Environmental Health Reports
https://www.readbyqxmd.com/read/28858712/bioaccumulation-of-trace-metals-in-farmed-pacific-oysters-crassostrea-gigas-from-sw-gulf-of-california-coast-mexico
#8
M P Jonathan, N P Muñoz-Sevilla, Andrés Martin Góngora-Gómez, Raquel Gabriela Luna Varela, S B Sujitha, D C Escobedo-Urías, P F Rodríguez-Espinosa, Lorena Elizabeth Campos Villegas
The aim of the study was to evaluate the bioavailability of trace metals (Chromium, Copper, Nickel, Lead, Zinc, Cadmium, Arsenic, and Mercury) in the commercially consumed Crassostrea gigas oysters collected over a 12-month growth period (2011-12) from an experimental cultivation farm in La Pitahaya, Sinaloa State, Mexico. Sediment and water samples were also collected from four different zones adjacent to the cultivation area to identify the concentration patterns of metals. The results revealed that sewage disposals, fertilizers used for agricultural practices and shrimp culture are the major sources for the enrichment of certain toxic metals...
August 22, 2017: Chemosphere
https://www.readbyqxmd.com/read/28809623/how-to-choose-between-the-implant-materials-steel-and-titanium-in-orthopedic-trauma-surgery-part-2-biological-aspects
#9
S M Perren, P Regazzoni, A A Fernandez
BIOLOGICAL ASPECTS OF STEEL AND TITANIUM AS IMPLANT MATERIAL IN ORTHOPEDIC TRAUMA SURGERY The following case from the ICUC database, where a titanium plate was implanted into a flourishing infection, represents the clinical experience leading to preferring titanium over steel. (Fig. 1) (6). Current opinions regarding biological aspects of implant function. The "street" opinions regarding the biological aspects of the use of steel versus titanium as a surgical trauma implant material differ widely. Statements of opinion leaders range from "I do not see any difference in the biological behavior between steel and titanium in clinical application" to "I successfully use titanium implants in infected areas in a situation where steel would act as foreign body "sustaining" infection...
2017: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/28751028/toxic-metals-biomonitoring-based-on-prey-predator-interactions-and-environmental-forensics-techniques-a-study-at-the-romanian-ukraine-cross-border-of-the-black-sea
#10
Stefan-Adrian Strungaru, Mircea Nicoara, Carmen Teodosiu, Dragos Micu, Gabriel Plavan
Marine cross-border areas are ideal for monitoring pollutants so as to increase ecosystems protection. This study was conducted at the Romanian-Ukraine border of the Black Sea to reveal evidence of contamination with toxic metals based on biomonitoring of: cadmium, lead, total chromium, nickel and copper at different water depths and prey-predator interactions, combined with environmental forensics techniques of biological sampling and separation in witnesses size groups. The species used were Mytilus galloprovincialis L...
July 25, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28712078/effects-based-spatial-assessment-of-contaminated-estuarine-sediments-from-bear-creek-baltimore-harbor-md-usa
#11
Sharon E Hartzell, Michael A Unger, Beth L McGee, Lance T Yonkos
Estuarine sediments in regions with prolonged histories of industrial activity are often laden to significant depths with complex contaminant mixtures, including trace metals and persistent organic pollutants. Given the complexity of assessing risks from multi-contaminant exposures, the direct measurement of impacts to biological receptors is central to characterizing contaminated sediment sites. Though biological consequences are less commonly assessed at depth, laboratory-based toxicity testing of subsurface sediments can be used to delineate the scope of contamination at impacted sites...
October 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28683391/biodegradable-alternative-for-removing-toxic-compounds-from-sugarcane-bagasse-hemicellulosic-hydrolysates-for-valorization-in-biorefineries
#12
T Silva-Fernandes, J C Santos, F Hasmann, R C L B Rodrigues, H J Izario Filho, M G A Felipe
Among the major challenges for hemicellulosic hydrolysate application in fermentative processes, there is the presence of toxic compounds generated during the pretreatment of the biomass, which can inhibit microbial growth. Therefore, the development of efficient, biodegradable and cost-effective detoxification methods for lignocellulosic hydrolysates is crucial. In this work, two tannin-based biopolymers (called A and B) were tested in the detoxification of sugarcane bagasse hydrolysate for subsequent fermentation by Candida guilliermondii...
November 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28681292/biochars-mitigate-greenhouse-gas-emissions-and-bioaccumulation-of-potentially-toxic-elements-and-arsenic-speciation-in-phaseolus-vulgaris-l
#13
Muhammad Ibrahim, Gang Li, Sardar Khan, Qiaoqiao Chi, Yaoyang Xu
Anthropogenic and natural activities can lead to increased greenhouse gas emissions and discharge of potentially toxic elements (PTEs) into soil environment. Biochar amendment to soils is a cost-effective technology and sustainable approach used to mitigate greenhouse gas emissions, improve phytoremediation, and minimize the health risks associated with consumption of PTE-contaminated vegetables. Greenhouse pot experiments were conducted to investigate the effects of peanut shell biochar (PNB) and sewage sludge biochar (SSB) on greenhouse gas (GHG) emissions, plant growth, PTE bioaccumulation, and arsenic (As) speciation in bean plants...
July 5, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28675125/toxic-and-essential-metals-in-cyprinus-carpio-carassius-gibelio-and-luciobarbus-esocinus-tissues-from-keban-dam-lake-pertek-turkey
#14
Gokce Kaya, Semra Turkoglu
In various tissues of Luciobarbus esocinus, Cyprinus carpio and Carassius gibelio which were taken from Keban Dam Lake Pertek region's freshwaters, Turkey in January-February 2016, concentrations of mercury, nickel, lead, cadmium, arsenic, manganese, chromium and cobalt were analyzed by ICP-MS after microwave digestion. In fish muscle mean chromium concentration (0.614 mgkg(-1) in C. carpio muscle) was higher than the maximum limits as set by the Federal Environmental Protection Agency (2003) and World Health Organisation (1985)...
July 4, 2017: Food Additives & Contaminants. Part B, Surveillance
https://www.readbyqxmd.com/read/28660804/evaluation-of-the-molecular-mechanisms-associated-with-cytotoxicity-and-inflammation-after-pulmonary-exposure-to-different-metal-rich-welding-particles
#15
Mohammad Shoeb, Vamsi Kodali, Breanne Farris, Lindsey M Bishop, Terence Meighan, Rebecca Salmen, Tracy Eye, Jenny R Roberts, Patti Zeidler-Erdely, Aaron Erdely, James M Antonini
Welding generates a complex aerosol of incidental nanoparticles and cytotoxic metals, such as chromium (Cr), manganese (Mn), nickel (Ni), and iron (Fe). The goal was to use both in vivo and in vitro methodologies to determine the mechanisms by which different welding fumes may damage the lungs. Sprague-Dawley rats were treated by intratracheal instillation (ITI) with 2.0 mg of gas metal arc-mild steel (GMA-MS) or manual metal arc-stainless steel (MMA-SS) fumes or saline (vehicle control). At 1, 3, and 10 days, bronchoalveolar lavage (BAL) was performed to measure lung toxicity...
July 18, 2017: Nanotoxicology
https://www.readbyqxmd.com/read/28643849/prevalence-of-exposure-of-heavy-metals-and-their-impact-on-health-consequences
#16
Kanwal Rehman, Fiza Fatima, Iqra Waheed, Muhammad Sajid Hamid Akash
Even in the current era of growing technology, the concentration of heavy metals present in drinking water is still not within the recommended limits as set by the regulatory authorities in different countries of the world. Drinking water contaminated with heavy metals namely; arsenic, cadmium, nickel, mercury, chromium, zinc, and lead is becoming a major health concern for public and health care professionals. Occupational exposure to heavy metals is known to occur by the utilization of these metals in various industrial processes and/or contents including color pigments and alloys...
June 23, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28628796/evaluation-of-cd-cr-cu-ni-and-pb-in-selected-cosmetic-products-from-jordanian-sudanese-and-syrian-markets
#17
A M Massadeh, M Y El-Khateeb, S M Ibrahim
OBJECTIVES: There is no sufficient data that evaluate heavy metal content in cosmetic products in Jordan as well as Sudan and Syria. This study aims to assess metal levels which include Cadmium (Cd), Chromium (Cr), Copper (Cu), Nickel (Ni), and Lead (Pb) in cosmetic products. These elements have draft limits because they are identified as potential impurities and are known to be toxic. This study aims to provide information to the population that may be beneficial to public health. STUDY DESIGN: Samples were collected from different brands obtained from markets in Jordan, Sudan, and Syria...
August 2017: Public Health
https://www.readbyqxmd.com/read/28595798/mineral-content-of-smooth-scallop-flexopecten-glaber-caught-canakkale-turkey-and-evaluation-in-terms-of-food-safety
#18
Nermin Berik, Ekrem Cem Çankırılıgil, Güzin Gül
In this research, one of the most promising scallop species, smooth scallop (Flexopecten glaber) was studied. According to our findings, smooth scallop has beneficial micro and macro minerals, fat and carbohydrate just before the spawning. While the ratios protein, ash and water decreased from autumn to summer, ratio of crude fat increased till reproduction season in late spring and decreased in summer (P<0.05). In digestive glands, aluminum, bromine, cadmium, calcium, chromium, copper, iron, manganese, nickel, and zinc were detected more compared to adductor muscles (P<0...
July 2017: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/28553695/metal-speciation-in-sediment-and-bioaccumulation-in-meretrix-lyrata-in-the-tien-estuary-in-vietnam
#19
Nguyen Van Hop, Hoang Thi Quynh Dieu, Nguyen Hai Phong
The concentrations of seven toxic metals (cadmium (Cd), nickel (Ni), chromium (Cr), arsenic (As), lead (Pb), copper (Cu), and zinc (Zn)) were determined in sediments and the soft tissues of a bivalve species (Meretrix lyrata) collected from the Tien Estuary in Tien Giang Province, South Vietnam. The total metal concentrations in sediments (mg/kg dry weight) increased as Cd (0.06) < Cu (5.0) < Pb (13.9) < As (16.3) < Ni (24) < Cr (50) < Zn (62). Speciation analysis revealed that these metals existed mainly in the residual fraction (43-94%), followed by the Fe-Mn oxide-bound (5-35%) and organic/sulfide-bound (0...
June 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28412307/the-9th-conference-on-metal-toxicity-and-carcinogenesis-the-conference-overview
#20
EDITORIAL
James T F Wise, Lei Wang, Zhuo Zhang, Xianglin Shi
Heavy metals, such as arsenic, chromium, cadmium, nickel, mercury, and uranium are known to cause many human diseases and health complications after occupational or environmental exposure. Consequently, metals are environmental health concerns. This manuscript is an overview of the 9th Conference on Metal Toxicity and Carcinogenesis held in October 2016 in Lexington, Kentucky. Since 2000, this biennial meeting brings together experts in the field to discuss current and prospective research in an effort to advance research pertaining to metal toxicity and carcinogenesis...
September 15, 2017: Toxicology and Applied Pharmacology
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