Impact of polypropylene microplastics and chemical pollutants on European sea bass (Dicentrarchus labrax) gut microbiota and health

Protective efficacy of dietary natural antioxidants on microplastic particles-induced histopathological lesions in African catfish (Clarias gariepinus)

“…Similar to kidney and liver tissues, MP exposure also reduced tissue carbohydrate content. Previous studies have reported similar structural and pathological changes following MP exposure, including shortening, erosion, and swelling of villi; vacuolation, swelling, and blebbing of enterocytes, focal necrosis of enterocytes and mucosal epithelial cells, disruption of the epithelial boundary, complete detachment of the epithelium and lamina propria, infiltration of leukocytes, degeneration of the basement membrane, goblet cell hypertrophy, atrophy of the submucosa, pyknotic nuclei, hemorrhage, and vacuolation of mucosal cells (Ahrendt et al 2020;Chen et al 2022;Espinosa et al 2019;Guo et al 2022;Iheanacho and Odo 2020;Jabeen et al 2018;Liao et al 2022;Lei et al 2018;Lu et al 2016;Montero et al 2022;Pedà et al 2016;Qiao et al 2019a;Song et al 2019;Xia et al 2018b;Zhu et al 2020;Zuo et al 2022). Exposure to MPs also enhanced the number of mucosal neutrophils as revealed by PAS straining (Limonta et al 2019) and markedly reduced goblet cell coverage as well as gut mucus volume, indicating epithelial layer damage (Qiao et al 2019b).…”

“…Some of the main effects that have been identified due to the ingestion of MPs include hindered predatory capacity, neurotoxicity, and reduced metabolic rate, as well as increased mortality rates (Vázquez-Rowe et al 2021). There have been numerous reports on the histopathological effects of MPs on fish (da Costa Araújo et al 2020;Espinosa et al 2017;González-Doncel et al 2022;Jabeen et al 2018;Karami et al 2016;Liu et al 2022;Lu et al 2016Lu et al , 2022Montero et al 2022;Rainieri et al 2018;Rochman et al 2013;Xia et al 2020;Yang et al 2020;Yin et al 2018;Yu et al 2018), and it may be due to oxidative stress and inflammation (Hoseini et al 2022a, b). Histopathological and histochemical examination methods provide sensitive indicators of cellular and tissue alterations within target organs such as the kidney and liver (Hamed et al 2022b;Haredi et al 2020;Sayed et al 2022).…”

Current knowledge on the presence, biodegradation, and toxicity of discarded face masks in the environment

“…On the other hand, exposed crabs ( Carcinus maenas ) exhibited reduced food consumption and, thus, reduced energy available for growth [155] and, on shrimps, exposure of Palaemonetes pugio resulted in acute toxicity being fibres the most toxic microplastics [117] although, according to Carreras-Colom et al there were no adverse effects on Aristeus antennatus [118] . On fish, Dicentrarchus labrax fed with PP microplastics, virgin or contaminated, had an intestinal inflammatory response and an imbalance in gut microbiota, however, with no alterations in their growth [156] . On Trachurus trachurus and Oryzias latipes, it impacted reproduction due to anomalies in the production of vitellogenin [157] , [158] .…”

Tracking contemporary microbial evolution in a changing ocean

“…In the ocean, this is of particular interest for our understanding of animal microbiotas that may be affected by global change in ways that we currently cannot predict and that could have significant impacts. For example, changes in the microbiota of fish could lead to changes in their health and populations [31], while changes in the coral microbiota could negatively impact the highly diverse coral reef ecosystems, with negative cascade effects in associated animal species [32].…”