Effects of Microplastics Associated with Triclosan on the Oyster Crassostrea brasiliana: An Integrated Biomarker Approach

Autor(es)

Nobre, Caio Rodrigues ^[1] ; Moreno, Beatriz Barbosa ^[2] ; Alves, Aline Vecchio ^[2] ; Rosa, Jonas de Lima ^[3] ; Franco, Heloisa da Rosa ^[3] ; de Souza Abessa, Denis Moledo ^[1] ; Maranho, Luciane Alves ^[1] ; Choueri, Rodrigo Brasil ^[2] ; Gusso-Choueri, Paloma Kachel ^{[3, 1]} ; Seabra Pereira, Camilo Dias ^{[3, 2]}

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ, Biosci Inst, Sao Vicente, SP - Brazil

^[2] Univ Fed Sao Paulo, Dept Marine Sci, Santos, SP - Brazil

^[3] Univ Santa Cecilia, Dept Ecotoxicol, Santos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Archives of Environmental Contamination and Toxicology; v. 79, n. 1 APR 2020.
• Citações Web of Science: 0

Resumo

Urban waste is a complex mixture of different substances, including microplastics and pharmaceuticals and personal care products. Microplastics have a high affinity for hydrophobic substances. One of these substances is triclosan, a bactericide used in a variety of hygiene products. Therefore, microplastics (MPs) may serve as a vector between triclosan and aquatic organisms. The current study sought to evaluate the effects of the interaction between microplastics and triclosan based on a mechanistic approach in which the oyster Crassostrea brasiliana was used as a model. The organisms were exposed to three conditions: the control, microplastic (MP), and microplastic contaminated with triclosan (MPT). The organisms were exposed for 3 or 7 days. After the exposure time, hemolymph was sampled for performing the neutral red retention time assay and, subsequently, the gills, digestive glands, and adductor muscles were dissected for measuring biomarkers responses (EROD, DBF, GST, GPx, GSH, lipid peroxidation, DNA strand breaks, and AChE). Our results demonstrate combined effects of MPs associated with triclosan on oyster physiology and biochemistry, as well as on lysosomal membrane stability. These results contribute to understanding the effects of contaminants of emerging concern and microplastics on aquatic organisms. (AU)

• Processo FAPESP: 17/12193-9 - Avaliação do risco ambiental da interação de microplástico, fármaco e antimicrobiano: uma abordagem ecotoxicológica
• Beneficiário: Caio Rodrigues Nobre
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 17/04970-5 - Relações entre concentrações de metais no sedimento, bioacumulação e respostas tóxicas em p. vivipara: subsídios para avaliação de risco ambiental
• Beneficiário: Paloma Kachel Gusso Choueri
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado