دورية أكاديمية
Subchronic oral exposure to polystyrene microplastics affects hepatic lipid metabolism, inflammation, and oxidative balance in gilthead seabream (Sparus aurata)
| العنوان: | Subchronic oral exposure to polystyrene microplastics affects hepatic lipid metabolism, inflammation, and oxidative balance in gilthead seabream (Sparus aurata) |
|---|---|
| المؤلفون: | Filomena Del Piano, Bethanie Carney Almroth, Adriano Lama, Giovanni Piccolo, Nicola Francesco Addeo, Orlando Paciello, Giovanni Martino, Sergio Esposito, Raffaelina Mercogliano, Claudio Pirozzi, Rosaria Meli, Maria Carmela Ferrante |
| المصدر: | Ecotoxicology and Environmental Safety, Vol 279, Iss , Pp 116455- (2024) |
| بيانات النشر: | Elsevier, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Environmental pollution LCC:Environmental sciences |
| مصطلحات موضوعية: | Hepatic metabolic dysfunction, Nonalcoholic fatty liver disease (NAFLD), Inflammatory response, Oxidative stress, Hepatic antioxidant system, Fish, Environmental pollution, TD172-193.5, Environmental sciences, GE1-350 |
| الوصف: | Microplastics (MPs) pose a clear threat to aquatic organisms affecting their health. Their impact on liver homeostasis, as well as on the potential onset of nonalcoholic fatty liver disease (NAFLD), is still poorly investigated and remains almost unknown. The aim of this study was to evaluate the outcomes of subchronic exposure to polystyrene MPs (PS-MPs; 1–20 μm; 0, 25, or 250 mg/kg b.w./day) on lipid metabolism, inflammation, and oxidative balance in the liver of gilthead seabreams (Sparus aurata Linnaeus, 1758) exposed for 21 days via contaminated food. PS-MPs induced an up-regulation of mRNA levels of crucial genes associated with lipid synthesis and storage (i.e., PPARy, Srebp1, Fasn) without modifications of genes involved in lipid catabolism (i.e., PPARα, HL, Pla2) or transport and metabolism (Fabp1) in the liver. The increase of CSF1R and pro-inflammatory cytokines gene expression (i.e., TNF-α and IL-1β) was also observed in exposed fish in a dose-dependent manner. These findings were confirmed by hepatic histological evaluations reporting evidence of lipid accumulation, inflammation, and necrosis. Moreover, PS-MPs caused the impairment of the hepatic antioxidant defense system through the alteration of its enzymatic (catalase, superoxide dismutase, and glutathione reductase) and non-enzymatic (glutathione) components, resulting in the increased production of reactive oxygen species (ROS) and malondialdehyde (MDA), as biomarkers of oxidative damage. The alteration of detoxifying enzymes was inferred by the decreased Ethoxyresorufin-O-deethylase (EROD) activity and the increased activity of glutathione-S-transferase (GST) at the highest PS-MP dose. The study suggests that PS-MPs affect the liver health of gilthead seabream. The liver dysfunction and damage caused by exposure to PS-MPs result from a detrimental interplay of inflammation, oxidative damage, and antioxidant and detoxifying enzymatic systems modifications, altering the gut-liver axis homeostasis. This scenario is suggestive of the involvement of MP-induced effects in the onset and progression of hepatic lipid dysfunction in gilthead seabream. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 0147-6513 |
| Relation: | http://www.sciencedirect.com/science/article/pii/S0147651324005311; https://doaj.org/toc/0147-6513 |
| DOI: | 10.1016/j.ecoenv.2024.116455 |
| URL الوصول: | https://doaj.org/article/2d1b08e4c68149b4881b2e65699a9cb4 |
| رقم الأكسشن: | edsdoj.2d1b08e4c68149b4881b2e65699a9cb4 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 01476513 |
|---|---|
| DOI: | 10.1016/j.ecoenv.2024.116455 |