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Mercury toxicity

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https://www.readbyqxmd.com/read/28718096/contamination-status-of-arsenic-in-fish-and-shellfish-from-three-river-basins-in-ghana
#1
Francis Gbogbo, Samuel Darlynton Otoo, Obed Asomaning, Robert Quaye Huago
Fish and shellfish are regularly consumed and sold in Ghana, yet studies on arsenic pollution in Ghana are limited largely to ground water. This study evaluated arsenic concentrations in seven species of shellfish and 10 species of fish inhabiting the mouth of Ankobra, Densu and Volta basins in Ghana and assessed the public health implications. Arsenic levels varied from 0.2 to 2.2 mg L(-1) in the three rivers and were higher than WHO recommended values of 10 μg L(-1) for drinking water. Except for Periophthalmus sp...
August 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28716727/systematic-review-and-meta-analysis-links-autism-and-toxic-metals-and-highlights-the-impact-of-country-development-status-higher-blood-and-erythrocyte-levels-for-mercury-and-lead-and-higher-hair-antimony-cadmium-lead-and-mercury
#2
REVIEW
Amene Saghazadeh, Nima Rezaei
BACKGROUND: Autism spectrum disorder (ASD) is a heterogeneous neurodevelopmental disorder that affects cognitive and higher cognitive functions. Increasing prevalence of ASD and high rates of related comorbidities has caused serious health loss and placed an onerous burden on the supporting families, caregivers, and health care services. Heavy metals are among environmental factors that may contribute to ASD. However, due to inconsistencies across studies, it is still hard to explain the association between ASD and toxic metals...
July 14, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28702205/association-of-arsenobetaine-with-beta-cell-function-assessed-by-homeostasis-model-assessment-homa-in-nondiabetic-koreans-data-from-the-fourth-korea-national-health-and-nutrition-examination-survey-knhanes-2008-2009
#3
Kiook Baek, Namhoon Lee, Insung Chung
BACKGROUND: Arsenic is known as an endocrine disruptor that people are exposed to through various sources such as drinking water and indigestion of marine products. Although some epidemiological and animal studies have reported a correlation between arsenic exposure and diabetes development, there are limited studies regarding the toxic effects of organic arsenic including arsenobetaine on the human body. Here, we analyzed the association between urine arsenobetaine and the homeostasis model assessment of β-cell function (HOMA-β), which is an index for predicting diabetes development and reflecting the function of pancreatic β-cells...
2017: Annals of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28701428/a-mercury-toxicity-case-complicated-by-hyponatremia-and-abnormal-endocrinological-test-results
#4
Matthew Carter, Abdul Abdi, Fareeha Naz, Farouq Thabet, Arpita Vyas
Mercury (Hg) poisoning is considered a rare disease by the National Institutes of Health and the diagnosis can present great challenges to clinicians. Children who are exposed to Hg can present with a wide variety of symptoms, including acrodynia, tremor, excessive salivation, and psychiatric symptoms, including insomnia. However, endocrinologic manifestations from Hg exposure are less well known. This is a case report of a 12-year-old boy who presented with body rash, irritability, insomnia, and profuse sweating after returning from a summer camp...
July 13, 2017: Pediatrics
https://www.readbyqxmd.com/read/28693110/potential-effects-of-brevetoxins-and-toxic-elements-on-various-health-variables-in-kemp-s-ridley-lepidochelys-kempii-and-green-chelonia-mydas-sea-turtles-after-a-red-tide-bloom-event
#5
Justin R Perrault, Nicole I Stacy, Andreas F Lehner, Cody R Mott, Sarah Hirsch, Jonathan C Gorham, John P Buchweitz, Michael J Bresette, Catherine J Walsh
Natural biotoxins and anthropogenic toxicants pose a significant risk to sea turtle health. Documented effects of contaminants include potential disease progression and adverse impacts on development, immune function, and survival in these imperiled species. The shallow seagrass habitats of Florida's northwest coast (Big Bend) serve as an important developmental habitat for Kemp's ridley (Lepidochelys kempii) and green (Chelonia mydas) sea turtles; however, few studies have been conducted in this area. Our objectives were (1) to evaluate plasma analytes (mass, minimum straight carapace length, body condition index [BCI], fibropapilloma tumor score, lysozyme, superoxide dismutase, reactive oxygen/nitrogen species, plasma protein electrophoresis, cholesterol, and total solids) in Kemp's ridleys and green turtles and their correlation to brevetoxins that were released from a red tide bloom event from July-October 2014 in the Gulf of Mexico near Florida's Big Bend, and (2) to analyze red blood cells in Kemp's ridleys and green turtles for toxic elements (arsenic, cadmium, lead, mercury, selenium, thallium) with correlation to the measured plasma analytes...
July 6, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28688358/trace-element-concentrations-in-feathers-and-blood-of-northern-goshawk-accipiter-gentilis-nestlings-from-norway-and-spain
#6
Kevin J Dolan, Tomasz M Ciesielski, Syverin Lierhagen, Igor Eulaers, Torgeir Nygård, Trond V Johnsen, Pilar Gómez-Ramírez, Antonio J García-Fernández, Jan O Bustnes, Manuel E Ortiz-Santaliestra, Veerle L B Jaspers
Information on trace element pollution in the terrestrial environment and its biota is limited compared to the marine environment. In the present study, we collected body feathers and blood of 37 Northern goshawk (Accipiter gentilis) nestlings from Tromsø (northern Norway), Trondheim (central Norway), and Murcia (southeastern Spain) to study regional exposure, hypothesizing the potential health risks of metals and other trace elements. Blood and body feathers were analyzed by a high resolution inductively coupled plasma mass spectrometer (HR-ICP-MS) for aluminum (Al), nickel (Ni), copper (Cu), zinc (Zn), arsenic (As), selenium (Se), cadmium (Cd), mercury (Hg) and lead (Pb)...
July 5, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28688298/maternal-transfer-of-mercury-to-songbird-eggs
#7
Joshua T Ackerman, C Alex Hartman, Mark P Herzog
We evaluated the maternal transfer of mercury to eggs in songbirds, determined whether this relationship differed between songbird species, and developed equations for predicting mercury concentrations in eggs from maternal blood. We sampled blood and feathers from 44 house wren (Troglodytes aedon) and 34 tree swallow (Tachycineta bicolor) mothers and collected their full clutches (n = 476 eggs) within 3 days of clutch completion. Additionally, we sampled blood and feathers from 53 tree swallow mothers and randomly collected one egg from their clutches (n = 53 eggs) during mid to late incubation (6-10 days incubated) to evaluate whether the relationship varied with the timing of sampling the mother's blood...
July 5, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28686469/dietary-compounds-as-modulators-of-metals-and-metalloids-toxicity
#8
Carlos Jadán-Piedra, Gabriela Matuoka Chiocchetti, María Jesús Clemente, Dinoraz Vélez, Vicenta Devesa
A large part of the population is exposed to metals and metalloids through the diet. Most of the in vivo studies on its toxicokinetics and toxicity are conducted by means of exposure through drinking water or by intragastric or intraperitoneal administration of aqueous standards, and therefore they do not consider the effect of the food matrix on the exposure. Numerous studies show that some components of the diet can modulate the toxicity of these food contaminants, reducing their effect on a systemic level...
July 7, 2017: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/28678414/freshwater-toxicity-testing-using-rehydrated-philodina-sp-rotifera-as-test-animals
#9
Terry W Snell, Rachel K Johnston, Amelia B Matthews
Rotifers have become widely used in aquatic toxicology as a rapid screening test for toxicity. The commercial availability of diapausing embryos (cysts) have facilitated their popularity because test animals can be obtained without having to master the details of culturing. Other rotifer species have life stages capable of surviving desiccation and also could be used in non-culture systems for toxicity assessment. In this article, we describe a system for toxicity testing in freshwater based on rehydrating desiccated bdelloid rotifers in the genus Philodina...
July 5, 2017: Environmental Toxicology
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
#10
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/28662415/medico-legal-aspects-of-self-injection-of-metallic-mercury-in-cases-of-suicide-or-self-harming
#11
REVIEW
Ugo Da Broi, Carlo Moreschi, Antonio Colatutto, Barbara Marcon, Silvia Zago
Metallic mercury may be self-injected for suicidal or self-harm purposes or sometimes for superstitious or other inadvisable reasons. Local tissue or systemic consequences such as mercurialism can frequently occur in cases of subcutaneous or deep injection, while death due to pulmonary embolism and cardiac, brain, hepatic or renal toxicity may occur in cases of high dosage intravenous administration. The aim of this review is to focus on the diagnostic difficulties facing coroners and forensic pathologists when the courts require confirmation that evidence of self-injection of metallic mercury is the result of suicide or self-harming...
June 19, 2017: Journal of Forensic and Legal Medicine
https://www.readbyqxmd.com/read/28655297/reduced-egfr-elevated-urine-protein-and-low-level-of-personal-protective-equipment-compliance-among-artisanal-small-scale-gold-miners-at-bibiani-ghana-a-cross-sectional-study
#12
Justice Afrifa, Samuel Essien-Baidoo, Richard K D Ephraim, Daniel Nkrumah, Daniel Osei Dankyira
BACKGROUND: Mercury is a toxic metal with its effects on human health ranging from acute to chronic in a very short time of exposure. Artisanal and small-scale gold mining (ASGM) is the main source of direct human exposure to mercury. AIM: To access the effect of mercury exposure on the renal function and level of personal protective equipment (PPE) compliance among small-scale gold miners in Bibiani District of the Western Region of Ghana METHOD: 110 consenting male gold miners were purposively recruited for this study...
June 27, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28650684/intentional-ingestion-of-elemental-mercury-requiring-multi-step-decontamination-and-prophylactic-appendectomy-a-case-report-and-treatment-proposal
#13
Andrea Michielan, Azzurra Schicchi, Roberto Cappuccio, Davide Lonati, Francesca Lamboglia, Alessandra Vitalba, Alessandro Caroli, Marta Crevani, Carlo A Locatelli, Giorgio Betetto
BACKGROUND: Ingestion of elemental mercury (Hg0) is considered non-toxic. After massive ingestion, local intestinal complications may develop: retention within appendix is quite frequent but treatment is debated. We describe a case of intentional ingestion of Hg0 requiring multi-step decontamination and prophylactic appendectomy. Case detail: A 19-year-old woman was admitted to ED for abdominal pain. History revealed ingestion of large amount of Hg0 as suicide attempt. To prevent absorption, facilitate elimination, and avoid complications a conservative approach was started...
June 26, 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28647262/development-of-a-hybrid-photo-bioreactor-and-nanoparticle-adsorbent-system-for-the-removal-of-co2-and-selected-organic-and-metal-co-pollutants
#14
Andrea A Rocha, Christian Wilde, Zhenzhong Hu, Oleg Nepotchatykh, Yevgen Nazarenko, Parisa A Ariya
Fossil fuel combustion and many industrial processes generate gaseous emissions that contain a number of toxic organic pollutants and carbon dioxide (CO2) which contribute to climate change and atmospheric pollution. There is a need for green and sustainable solutions to remove air pollutants, as opposed to conventional techniques which can be expensive, consume additional energy and generate further waste. We developed a novel integrated bioreactor combined with recyclable iron oxide nano/micro-particle adsorption interfaces, to remove CO2, and undesired organic air pollutants using natural particles, while generating oxygen...
July 2017: Journal of Environmental Sciences (China)
https://www.readbyqxmd.com/read/28645012/associations-between-toxic-and-essential-trace-elements-in-maternal-blood-and-fetal-congenital-heart-defects
#15
Yanqiu Ou, Michael S Bloom, Zhiqiang Nie, Fengzhen Han, Jinzhuang Mai, Jimei Chen, Shao Lin, Xiaoqing Liu, Jian Zhuang
Prenatal exposure to toxic trace elements, including heavy metals, is an important public health concern. Few studies have assessed if individual and multiple trace elements simultaneously affect cardiac development. The current study evaluated the association between maternal blood lead (Pb), cadmium (Cd), chromium (Cr), copper (Cu), mercury (Hg), and selenium (Se) levels and congenital heart defects (CHDs) in offspring. This hospital-based case-control study included 112 case and 107 control infants. Maternal peripheral blood draw was made during gestational weeks 17-40 and used to determine trace element levels by inductively coupled plasma mass spectrometry...
June 20, 2017: Environment International
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, chromium, 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/28641884/oxidative-stress-profiles-in-brain-point-out-a-higher-susceptibility-of-fish-to-waterborne-divalent-mercury-compared-to-dietary-organic-mercury
#17
Olívia Cardoso, Sónia Puga, Fátima Brandão, João Canário, Nelson J O'Driscoll, Maria Ana Santos, Mário Pacheco, Patrícia Pereira
This study examines, for the first time, the neurotoxicity of Hg(II) and MeHg in fish (Diplodus sargus) in a time-course comparative perspective and considering realistic exposure levels and routes. Both forms followed an identical time-variation pattern of accumulation in the brain, but dietary MeHg was more efficiently transported to the brain. MeHg was substantially eliminated from the brain in 28days of depuration, which did not occur for Hg(II). Moreover, Hg(II) displayed a high neurotoxicity potential, as unveiled by the poor activation of brain antioxidant defenses and recurrent oxidative damage (as protein oxidation), while the opposite was recorded upon MeHg exposure...
June 19, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28622806/graphitic-carbon-nitride-supported-platinum-nanocomposites-for-rapid-and-sensitive-colorimetric-detection-of-mercury-ions
#18
Yi-Wei Wang, Lixing Wang, Fengping An, Hui Xu, Zejin Yin, Shurong Tang, Huang-Hao Yang, Hongbo Song
In this study, graphitic carbon nitride supported platinum nanocomposites (g-C3N4/PtNPs) have been synthesized for the first time by an ultrasonic-assisted chemical reduction method. By using g-C3N4 as the stabilizer, Pt ions could be reduced to PtNPs by NaBH4 and uniformly deposited on the surface of g-C3N4. The resulting g-C3N4/PtNPs exhibited enhanced catalytic activity for the oxidation of 3,3',5,5'-tetramethylbenzidine (TMB) compared to that of g-C3N4 or PtNPs alone. After interaction with Hg(2+), the catalytic activity of g-C3N4/PtNPs was effectively inhibited due to the formation of HgPt amalgam...
August 8, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28620728/contents-of-heavy-metals-in-chinese-edible-herbs-evidence-from-a-case-study-of-epimedii-folium
#19
Xiao-Hua Yang, Hua-Feng Zhang, Li-Li Niu, Ying Wang, Jiang-Hua Lai
Toxic heavy metal contamination in Chinese edible herbs has raised a worldwide concern. In this study, heavy metals in Epimedii Folium, an edible medicinal plant in China, were quantitatively analyzed. Variations of heavy metals in different species, in various organs (i.e., leaves, stems, and roots), in wild-growing and cultivated plants, and in 35 market samples of Epimedii Folium, were systematically investigated. In all of Epimedium samples, Hg (mercury) was not detectable (0.00 μg/g). Four species, Epimedium pubescens, Epimedium sagittatum, Epimedium brevicornu, and Epimedium wushanense, were found to contain Cu (copper) and Pb (lead)...
June 16, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28614596/efficient-mercury-capture-using-functionalized-porous-organic-polymer
#20
Briana Aguila, Qi Sun, Jason A Perman, Lyndsey D Earl, Carter W Abney, Radwan Elzein, Rudy Schlaf, Shengqian Ma
The primary challenge in materials design and synthesis is achieving the balance between performance and economy for real-world application. This issue is addressed by creating a thiol functionalized porous organic polymer (POP) using simple free radical polymerization techniques to prepare a cost-effective material with a high density of chelating sites designed for mercury capture and therefore environmental remediation. The resulting POP is able to remove aqueous and airborne mercury with uptake capacities of 1216 and 630 mg g(-1) , respectively...
June 14, 2017: Advanced Materials
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