Results 61 to 70 of about 42,224 (206)

Concentrations of Polychlorinated Biphenyls (PCB’s), Chlorinated Pesticides, and Heavy Metals and Other Elements in Tissues of Belugas, Delphinapterus leucas, from Cook Inlet [PDF]

, 2000
Tissues from Cook Inlet beluga whales, Delphinapterus leucas, that were collected as part of the Alaska Marine Mammal Tissue Archival Project were analyzed for polychlorinated biphenyls (PCB’s), chlorinated pesticides, and heavy metals and other elements.
Becker, Paul R., Demiralp, Rabia, Donais, Mary Kate, Epstein, Michael S., Krahn, Margaret M., Mackey, Elizabeth A., Muir , Derek C. G., Porter, Barbara J., Schantz , Michele M., Wise , Stephen A.   +9 more
core  

A Decade of Post‐Fire Succession Amplifies the Effect of Wildfire on the Surface Radiation Balance and Permafrost Thaw in Subarctic Peatlands

Permafrost and Periglacial Processes, Volume 37, Issue 1, Page 124-142, January/March 2026.
ABSTRACT Increasing wildfire activity is driving permafrost thaw in subarctic peatlands across the southern Northwest Territories, but the key mechanisms and progression of thaw following fire remain poorly understood. In response, 10 years (2015–2024) of near‐continuous surface (four‐component radiation, wind, and snow) and subsurface measurements ...
Maude Auclair, Stephanie N. Wright, David Olefeldt, Oliver Sonnentag, William L. Quinton   +4 more
wiley   +1 more source

Morphine protects against methylmercury intoxication: a role for opioid receptors in oxidative stress? [PDF]

PLoS ONE, 2014
Mercury is an extremely dangerous environmental contaminant responsible for episodes of human intoxication throughout the world. Methylmercury, the most toxic compound of this metal, mainly targets the central nervous system, accumulating preferentially ...
Allan Costa-Malaquias, Mauro B Almeida, José R Souza Monteiro, Barbarella de Matos Macchi, José Luiz M do Nascimento, María Elena Crespo-Lopez   +5 more
doaj   +1 more source

Mercury in Florida Bay fish: spatial distribution of elevated concentrations and possible linkages to Everglades restoration [PDF]

, 2005
Health advisories are now posted in northern Florida Bay, adjacent to the Everglades, warning of high mercury concentrations in some species of gamefish.
Crumley, Peter H., Evans, David W.
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Dissolved and Particulate Methylated Mercury in a Highly Productive Area of the Southern Ocean

Global Biogeochemical Cycles, Volume 40, Issue 1, January 2026.
Abstract Methylated mercury (MeHg), including dimethylmercury and monomethylmercury (MMHg), is a pollutant of concern because it biomagnifies in marine biota. The formation of MeHg in the oceans, specifically at highly productive regions and at high oxygen levels, remains elusive.
Harald Biester, Marta Pérez‐Rodríguez, Adelina Calean, Marco Benkhettab Sindlev, Florian Lüskow, Evgeny A. Pakhomov, Ingrid Stimac, Scarlett Trimborn, Aurélie Dufour, Natalia Torres‐Rodriguez, Lars‐Eric Heimbürger‐Boavida, Frank Wenzhöfer, Ronnie N. Glud   +12 more
wiley   +1 more source

Molecular composition of organic matter controls methylmercury formation in boreal lakes

Nature Communications, 2017
Neurotoxic methylmercury can be found in high levels in aquatic systems, but the role of organic matter in methylmercury formation is not well understood. Here, Bravoet al.
Andrea G. Bravo, Sylvain Bouchet, Julie Tolu, Erik Björn, Alejandro Mateos-Rivera, Stefan Bertilsson   +5 more
doaj   +1 more source

Leveraging Epidemiology to Improve Risk Assessment. [PDF]

, 2011
The field of environmental public health is at an important crossroad. Our current biomonitoring efforts document widespread exposure to a host of chemicals for which toxicity information is lacking.
Burke, Thomas A, Fox, Mary A, Nachman, Keeve E, Rodricks, Joseph V, Sheehan, Mary C, Woodruff, Tracey J   +5 more
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Heavy Metal Contamination in Chocolates and Candies: Sources, Health Risks, and Analytical Insights

Journal of Chemistry, Volume 2026, Issue 1, 2026.
The presence of heavy metals in chocolates and candies poses growing public health concerns, particularly for children who are frequent consumers. This review consolidates evidence on the occurrence, sources, toxicological impacts, and analytical monitoring of metals, including Pb, Cd, Hg, As, Cr, Ni, and Al, in confectionery products.
Mahmood Ahmed, Maryam, Ali Abbas Aslam, Fatima Aftab, Ahmad Saeed, Mudassar Sanaullah, Muhammad Hassan, Riaz Hussain, Eisha Eiman, Masooma Irfan, Muhammad Yaseen, Muhammad Zaeem Mehdi, Sohini Basu Roy   +12 more
wiley   +1 more source

Reduced tubulin tyrosination as an early marker of mercury toxicity in differentiating N2a cells [PDF]

, 2007
The aims of this work were to compare the effects of methyl mercury chloride and Thimerosal on neurite/process outgrowth and microtubule proteins in differentiating mouse N2a neuroblastoma and rat C6 glioma cells.
A.J. Hargreaves, Atchison, Barra, C. Lloyd Mills, Cambray-Deakin, Castoldi, Counter, Denizot, Dringen, Erck, Flaskos, Goldman, Graff, Hajela, Hargreaves, Heidemann, Jacobson, James, Laemmli, Lowry, M. Iqbal, M. Kontovraki, M. Lawton, Miura, Olivieri, O’Kusky, Parran, Towbin, Ueha-Ishibashi, Webster   +29 more
core   +1 more source

Binding of Hg(I) and Hg(II) Ions to Amyloid‐Beta (Aβ) Peptide Variants Affect their Structure and Aggregation

ChemBioChem, Volume 26, Issue 24, December 11, 2025.
Mercury (Hg) is a possible risk factor for Alzheimer's disease, where neuronal death is related to amyloid brain plaques containing aggregated amyloid‐β (Aβ) peptides. We show that equimolar Hg(I) or Hg(II) ions inhibit normal Aβ aggregation. Hg(II) binds Aβ(1–40) with an apparent binding affinity 28 ± 8 μM.
Elina Berntsson, Andra Noormägi, Kärt Padari, Jüri Jarvet, Astrid Gräslund, Margus Pooga, Peep Palumaa, Sebastian K. T. S. Wärmländer   +7 more
wiley   +1 more source