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http://dx.doi.org/10.5858/arpa.2011-0667-LE | DOI Listing |
Environ Sci Technol
September 2025
IPREM, Institut des Sciences Analytiques et de Physico-chimie pour l'Environnement et les Matériaux, E2S-UPPA, CNRS, Université de Pau et des Pays de l'Adour, 2 Av. du Président Pierre Angot, Pau 64000, France.
The origin of the bioaccumulative neurotoxin methylmercury (MeHg) in the ocean remains elusive. The current paradigm suggests that the microbial methylation of inorganic Hg within the oceanic water column produces monomethylmercury (MMHg) and potentially dimethylmercury (DMHg). Reaction rates and main drivers governing MeHg levels (sum of MMHg and DMHg) are poorly constrained.
View Article and Find Full Text PDFSci Total Environ
August 2025
Laboratory of Environmental Toxicology, Center for Nuclear Energy in Agriculture, University of São Paulo, Piracicaba, Brazil. Electronic address:
Cyanobacteria can produce a range of cyanotoxins, with guanitoxin (GNT) being the only naturally occurring organophosphate reported. Despite its potency as a neurotoxin, data on its toxicity, especially in combination with other neurotoxic compounds, remain limited. This study evaluates the combined toxicity of GNT, malathion (MLT), and trichlorfon (TCF) in Oreochromis niloticus.
View Article and Find Full Text PDFToxins (Basel)
July 2025
LAQV/REQUIMTE, Periodontology and Oral Surgery Department, Faculty of Dental Medicine, University of Porto (FMDUP), Rua Dr. Manuel Pereira da Silva, 4200-393 Porto, Portugal.
Current research reported that the number of clinical studies found for botulinum toxin (BoNT) key effects on biochemical biomarkers in head and neck chronic conditions linked to inflammation was very low. There are no systematic reviews of animal studies on this topic, and hence our review aimed to evaluate the quality of the preclinical evidence. We searched PubMed, Scopus, and Web of Science databases, and registries up to 29 January 2024.
View Article and Find Full Text PDFMar Mamm Sci
May 2025
University of Washington, Cooperative Institute for Climate, Ocean, and Ecosystem Studies, Seattle, WA, USA.
In August 2024, a northern fur seal mortality event was observed on St. Paul Island, AK in the southeast (SE) Bering Sea. Ten seals in good body condition were found dead along with large accumulations of dead fish on Benson Beach located on St.
View Article and Find Full Text PDFDis Aquat Organ
August 2025
Bigelow Laboratory for Ocean Sciences, East Boothbay, ME 04544, USA.
Domoic acid (DA) is a naturally occurring amino acid structurally analogous to kainic acid (KA). DA, a neurotoxin commonly associated with toxigenic Pseudo-nitzschia species, enters the food chain via filter feeders and poses a potential threat to predators such as sea stars. To assess the presence of DA, wild-collected sea stars (Pisaster ochraceus and Asterias spp.
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