Results 41 to 50 of about 1,705,009 (219)

Biochemical characterization and mercury methylation capacity of Geobacter sulfurreducens biofilms grown in media containing iron hydroxide or fumarate

Biofilm, 2023
Geobacter species are common in iron-rich environments and can contribute to formation of methylmercury (MeHg), a neurotoxic compound with high bioaccumulation potential formed as a result of bacterial and archaeal physiological activity.
Elena Yunda, Quynh Nhu Phan Le, Erik Björn, Madeleine Ramstedt   +3 more
doaj   +1 more source

Experimental Evidence for Mobilization of Mercury From the Eggshell by the Developing Embryo in an Avian Model Organism

Environmental Toxicology, EarlyView.
ABSTRACT Of the many pollutants wildlife is exposed to, mercury ranks among the most toxic. In birds, mercury does not only accumulate within generations, but also is transferred across generations via maternal offloading in eggs, with higher mercury concentrations found in shells of unhatched eggs.
Matteo Beccardi, Justine Bertram, Sandra Bouwhuis, Pablo Salmón, Peter J. Schupp, Oscar Vedder   +5 more
wiley   +1 more source

Ecotoxicological Assessment of Mercury in Fish From a Gold‐Mining‐Impacted Amazonian River: Biomonitoring and Human Health Risk

Environmental Toxicology, EarlyView.
ABSTRACT The Peixoto de Azevedo River, located in northern Mato Grosso, southern Brazilian Amazon, has a long history of artisanal and small‐scale gold mining (ASGM). This study evaluated total mercury (THg) concentrations in fish tissues to assess biomagnification and potential risks.
Augusto Cesar da Costa Castilho, Kleber Solera, Vinícius José Santos Lopes, Gleyce Alves Machado, Ricardo Lopes Tortorela de Andrade, Leandro Dênis Battirola   +5 more
wiley   +1 more source

Inhibition of Horse Liver Alcohol Dehydrogenase by Methyltin Compounds

Bioinorganic Chemistry and Applications, 2005
The study of inorganic tin (SnCl2, SnCl4) and methyltin compounds (MeSnCl3, Me2SnCI2, Me3SnCl) effects on the enzymatic activity of alcohol dehydrogenase (ADH) in the reaction of ethanol oxidation has been carried out.
Pavel V. Bychkov, Tatyana N. Shekhovtsova, Elena R. Milaeva   +2 more
doaj   +1 more source

Associations of gestational and early-life exposure to toxic metals and fluoride with a diagnosis of food allergy or atopic eczema at 1 year of age

Environment International, 2023
Studies have indicated that early-life exposure to toxic metals and fluoride affects the immune system, but evidence regarding their role in allergic disease development is scarce.
Mariza Kampouri, Klara Gustin, Mia Stråvik, Malin Barman, Anna Sandin, Ann-Sofie Sandberg, Agnes E. Wold, Marie Vahter, Maria Kippler   +8 more
doaj   +1 more source

Protective Effects of Bee Venom (Apis mellifera) Against Cadmium‐Induced Hepatorenal Toxicity, Oxidative Stress, and Anxiety‐Like Behavior in Rats

Environmental Toxicology, EarlyView.
ABSTRACT Cadmium (Cd) is a persistent environmental heavy metal and a major public health concern because it persists in the body for long periods and gradually accumulates in vital organs, particularly the liver, kidneys, and brain. Chronic Cd exposure promotes the excessive production of reactive oxygen species (ROS), which ultimately leads to ...
Soumaya Ghodbane, Chedli Ellijimi, Rym Elfessi, Ranya Hezzi, Khemaies Ben Rhouma, Hafedh Abdelmelek, Najet Srairi‐Abid, Mohsen Sakly, Riadh Marrouchi   +8 more
wiley   +1 more source

Voltammetric and other properties of methylmercury compounds and distribution of methylmercury in environmental samples [PDF]

, 1975
The reduction of aqueous methylmercury solutions has been studied using polarography and cyclic voltammetry at the dropping mercury electrode. By scanning a broad range of pH, pCl and methylmercury concentrations, a detailed reduction mechanism has been ...
Arah, Reginald Okay
core   +1 more source

A Role for Gene-Environment Interactions in Autism Spectrum Disorder Is Supported by Variants in Genes Regulating the Effects of Exposure to Xenobiotics

Frontiers in Neuroscience, 2022
Heritability estimates support the contribution of genetics and the environment to the etiology of Autism Spectrum Disorder (ASD), but a role for gene-environment interactions is insufficiently explored.
João Xavier Santos, João Xavier Santos, Célia Rasga, Célia Rasga, Ana Rita Marques, Ana Rita Marques, Hugo Martiniano, Hugo Martiniano, Muhammad Asif, Muhammad Asif, Joana Vilela, Joana Vilela, Guiomar Oliveira, Guiomar Oliveira, Lisete Sousa, Ana Nunes, Ana Nunes, Astrid M. Vicente, Astrid M. Vicente   +18 more
doaj   +1 more source

Effect of Glutathione S‐Transferase and Metallothionein Polymorphisms on Mercury Levels and End‐Stage Renal Disease (ESRD) in Colombian Patients

Environmental Toxicology, EarlyView.
ABSTRACT Epidemiological studies have demonstrated a link between chronic kidney disease (CKD) and environmental mercury (Hg) exposure. Colombia has a well‐documented history of artisanal and small‐scale gold mining, where Hg exposure affects miners and nearby riverside and urban populations. This study aimed to evaluate the effects of polymorphisms in
Diana M. Narváez, Juliana Lago, Carlos Trillos, Marcela Varona, Leonardo Briceño, Ruth Marien Palma, Sonia M. Díaz, Gilma Hernández, Eliana M. Téllez, Juan Sebastián Aguilar, Daniela Castellanos, Xavier Martínez, Estefanía Zapata, Alix Rocio Barrios, Ignacio Villanueva, Michael R. Fonseca, Helena Groot   +16 more
wiley   +1 more source

Marine migration influences mercury accumulation in anadromous Arctic char (Salvelinus alpinus)

Journal of Fish Biology, EarlyView.
Abstract Mercury (Hg) is a globally distributed toxic metal present in northern natural environments that biomagnifies in food webs and bioaccumulates in apex predator fish, such as Arctic char (Salvelinus alpinus)—an iteroparous species with a circumpolar distribution. Arctic char exhibit a variety of life history types, with the migrating, anadromous
Isabel R. Hilgendag, Michael Power, Mehdi M. Aqdam, Christopher W. Lewis, Zoya Martin, Ashley D. Ehrman, Heidi K. Swanson   +6 more
wiley   +1 more source