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Zinc speciation promotes distinct effects on dinoflagellate growth and coral trypsin-like enzyme activity.
Biometals
January 2025
Instituto de Química, Universidade de São Paulo, Av. Lineu Prestes 748, São Paulo, 05508-000, Brazil.
Zinc is an essential metal to living organisms, including corals and their symbiotic microalgae (Symbiodiniaceae). Both Zn(II) deprivation and overload are capable of leading to dysfunctional metabolism, coral bleaching, and even organism death. The present work investigated the effects of chemically defined Zn species (free Zn, ZnO nanoparticles, and the complexes Zn-histidinate and Zn-EDTA) over the growth of the dinoflagellates Symbiodinium microadriaticum, Breviolum minutum, and Effrenium voratum, and on the trypsin-like proteolytic activity of the hydrocoral Millepora alcicornis.
View Article and Find Full Text PDFAlgae extract-based nanoemulsions for photoprotection against UVB radiation: an electrical impedance spectroscopy study.
Sci Rep
January 2025
Departamento de Farmacia, Facultad de Ciencias, Universidad Nacional de Colombia, Cra. 30 N° 45-03, Bogotá D.C., Colombia.
Skin cancer is one of the most common types of cancer worldwide, with exposure to UVB radiation being a significant risk factor for its development. To prevent skin cancer, continuous research efforts have focused on finding suitable photoprotective ingredients from natural sources that are also environmentally friendly. This study aimed to develop oil-in-water photoprotective nanoemulsions containing marine macroalgae extract.
View Article and Find Full Text PDFSeasonal variability and risk evaluation of emerging organic contaminants in European river: linking in silico and in vitro approaches to prioritize hazardous EOCs.
Environ Res
January 2025
University of St. Thomas, Department of Biology, Mail OWS 390, 2115 Summit Ave, Saint Paul, MN, 55105, USA.
Emerging organic contaminants (EOCs) are a growing concern for aquatic ecosystems, underscoring the need for advanced risk assessment methodologies. This study employed an integrated approach to evaluate the risks associated with 563 EOCs across 13 monitoring sites along the Sava River in Croatia. Sampling was conducted during the winter and spring months, spanning February to May.
View Article and Find Full Text PDFGene transcription in the oyster Crassostrea gigas exposed to environmental concentrations of the UV filter Benzophenone-3.
Aquat Toxicol
January 2025
Laboratory of Biomarkers of Aquatic Contamination and Immunochemistry-LABCAI, Federal University of Santa Catarina - UFSC, Florianópolis, SC 88037-000, Brazil. Electronic address:
Personal care products (PCPs), such as sunscreens, are usually found in various aquatic ecosystems at low concentrations (ng l to µg l). However, there is limited information regarding their effects on marine bivalves. Therefore, the aim of this study was to evaluate the sublethal effects of environmental concentrations (1 and 100 µg l) of benzophenone-3 (BP-3) in Crassostrea gigas oysters after 1 and 7 days of exposure.
View Article and Find Full Text PDFBiosynthesized ZnO NPs loaded-electrospun PVA/sodium alginate/glycine nanofibers: synthesis, spinning optimization and antimicrobial activity evaluation.
Sci Rep
January 2025
Chemistry Department, Faculty of Science, Menoufia University, Shibin El-Kom, 32511, Egypt.
In this work, microalgae-based zinc oxide nanoparticles loaded with electrospun polyvinyl alcohol (PVA)/sodium alginate (SA) nanofibers were fabricated by electro-spinner. PVA/SA fibrous mats were crosslinked by citric acid, which enhanced their thermal stability and swelling behavior. Green-synthesized ZnO NPs were laboratory synthesized and characterized by FTIR, XRD, EDX, SEM, TEM and TGA analyses.
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