ArticleJournal of molecular histology2024
Variations in liver histology and P-gp expression among fish species in Doce River Basin, Brazil: implications for pollution sensitivity.
Article in Journal of molecular histology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Fish may have different sensitivity to pollutants present in the water. We analyzed the liver histology, and P-gp expression in six species of fish from the Doce River basin. Fish were caught at six different points in the Doce River, and liver samples were taken for histological analysis. P-gp expression was analyzed using an immunohistochemical technique. In Astyanax lacustris, Hoplias intermedius, Hypostomus affinis, Trachelyopterus striatulus and Oligosarcus acutirostris, a double arrangement of hepatocyte plates was generally observed (tubular-form), while in Deutorodon taeniatus, a single arrangement of hepatocyte plates was frequently observed (cord-like). Histological changes, such as cytoplasmic vacuolation and nuclear alteration, were observed in the livers of all species analyzed, however, the species A. lacustris (34.1%) and H. affinis (33.3%) were those with the fewest individuals with histological changes. The H. intermedius, T. striatulus, and O. acutirostris were the species that presented more than 80% of their individuals with histological changes. The A. lacustris and H. affinis were the species that showed the highest P-pg immunolabeling in the liver, while the T. striatulus and O. acutirostris had the lowest levels. These results support the hypothesis that levels of P-gp expression could respond to the resistance or sensitivity of each species to environmental pollutants.
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