Bisfenol A (BPA), polikarbonat plastiklerin ve epoksi reçinelerinin üretiminde kullanılan çevresel bir kirleticidir. Bununla birlikte bisfenol S (BPS), son zamanlarda BPA ürünlerine alternatif olarak kullanılmaya başlanan bir bisfenol analoğudur. Bu çalışmada farklı BPS konsantrasyonlarına (0, 100 ve 500 μg/L) 21 gün maruz bırakılan japon balıklarının (Carassius auratus) karaciğer, böbrek, gonad ve solungaç dokularındaki bir dizi etki histopatolojik olarak belirlenmiştir. Solungaçlarda BPS'nin hiperemi, ödem, epitel hücrelerinde deskuamasyon ve nekroza neden olduğu dikkat çekmiştir. Böbreklerde nekroz ve melanomakrofaj infiltrasyonları sıklıkla gözlenmiştir. Karaciğerde BPS'nin hiperemi ve inflamatuar hücre infiltrasyonlarına neden olduğu saptanmıştır. Bu çalışma, BPS'nin Carassius auratus'un çeşitli viseral organlarında dejeneratif değişikliklere neden olduğu ve histopatolojik değişikliklerin şiddetinin doza bağlı olduğunu ortaya koymuştur.
Used as a component of polycarbonate plastics and epoxy resins in the modern industrial world, bisphenol A (BPA) is one of the highest volume produced industrial chemicals worldwide. BPA causes important environmental problems including endocrine disrupting effect on the organisms in aquatic environments. This study focused on the histopathological, oxidative and hematological effects of long-term BPA exposure on wild vimba bream (Vimba vimba) for the first time. Twenty-five fish stocked in each aquarium and exposed to 1000 μg/L BPA for four weeks. Hematological parameters of fish did not differ significantly compared to control group. The antioxidant activity of liver and gill tissues created a significant partial difference between the groups. According to the histopathological studies, intense hyperplasia and necrosis were detected in the gill tissues of the fish exposed BPA. In addition, hypertrophy and epithelial lifting symptom were partly observed. Vocalization and hypertrophic cells was determined in the liver tissues. In conclusions, this study revealed that BPA had an oxidative and especially histopathologically adverse effects on V. vimba, even though it did not have a hematological effect on the treated fish. Although BPA has adverse effects on the health of aquatic organisms, future studies should focus on the residue in fish meat and risk assessment on human health.
This study aimed to investigate of bisphenol A (BPA) on histopathological tissue (hepatopancreas and gills), immune ability (lysozyme activity), oxidative stress and antioxidant defence in crayfish (Pontastacus leptodactylus). Crayfish were exposed to BPA to various concentrations (0 (control), and 10, 50, 100 μg/L) for 5 and 20 days in triplicates. Histopathological findings showed moderate to severe hyperemia and inflammatory cell infiltrations, irregular epithelial cell arrangements, degeneration, necrosis and sloughing at the cells, collapse of the hepatopancreas tubules and hyperemia, oedema and sloughing at the epithelial cells of gills. In addition to swelling of gills, accumulation of hemocytes in the hemocoelic space of the gill lamellae relating to dosage were noticed. Antioxidant-related enzyme activities which superoxide dismutase (SOD), Glutathione-S-transferase GST, and glutathione reductase (GR) activity in 10, 50, 100 μg/L BPA group were significantly lower than control at 5 days (p<0.05). Lysozyme activity (LSZ) was no significantly enhanced according to control (p>0.05). These results suggest that the alterations in the antioxidant enzymes and the histological structure of the hepatopancreas, and gill tissue of crayfish can be used as potential biomarkers for risk assessment in aquatic ecosystem.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.