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Effect of polyethylene microplastics on oxidative stress and histopathology damages in Litopenaeus vannamei

Environmental Pollution 2021 122 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 50 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Cheng‐Di Dong Shu‐Ling Hsieh, Ya‐Ting Chen, Shu‐Ling Hsieh, Ya‐Ting Chen, Shu‐Ling Hsieh, Chiu‐Wen Chen, Ya‐Ting Chen, Chiu‐Wen Chen, Shu‐Ling Hsieh, Yichen Wu, Ruo-Qi Xu, Ruo-Qi Xu, Ruo-Qi Xu, Ruo-Qi Xu, Ruo-Qi Xu, Chiu‐Wen Chen, Shu‐Ling Hsieh, Reeta Rani Singhania, Ruo-Qi Xu, Cheng‐Di Dong Shu‐Ling Hsieh, Ruo-Qi Xu, Ruo-Qi Xu, Reeta Rani Singhania, Reeta Rani Singhania, Chiu‐Wen Chen, Chiu‐Wen Chen, Chiu‐Wen Chen, Ya‐Ting Chen, Ya‐Ting Chen, Ya‐Ting Chen, Shu‐Ling Hsieh, Reeta Rani Singhania, Chiu‐Wen Chen, Shu‐Ling Hsieh, Chiu‐Wen Chen, Chiu‐Wen Chen, Chiu‐Wen Chen, Reeta Rani Singhania, Reeta Rani Singhania, Cheng‐Di Dong Chiu‐Wen Chen, Cheng‐Di Dong Shu‐Ling Hsieh, Chiu‐Wen Chen, Cheng‐Di Dong Cheng‐Di Dong Cheng‐Di Dong Shu‐Ling Hsieh, Shu‐Ling Hsieh, Cheng‐Di Dong Cheng‐Di Dong Chiu‐Wen Chen, Cheng‐Di Dong Ya‐Ting Chen, Chiu‐Wen Chen, Chiu‐Wen Chen, Reeta Rani Singhania, Cheng‐Di Dong Cheng‐Di Dong Cheng‐Di Dong Chiu‐Wen Chen, Chiu‐Wen Chen, Cheng‐Di Dong Cheng‐Di Dong Cheng‐Di Dong Cheng‐Di Dong Cheng‐Di Dong Cheng‐Di Dong

Summary

Researchers injected fluorescent polyethylene microspheres into Pacific white shrimp (Litopenaeus vannamei) and found that microplastic exposure increased oxidative stress markers and caused histopathological damage to hepatopancreas and gill tissue, even at relatively low concentrations.

Polymers

Body Systems

Hepatic Musculoskeletal

Study Type Environmental

There has been a significant increase in the microplastic (MP) polluting the ocean in recent time which is regarded as toxic for living organisms. In this study, Fluorescent red polyethylene microspheres (FRPE) were administered intramuscularly to Litopenaeus vannamei juveniles at the concentration of 0.1, 0.2, 0.5 and 1.0 μg (g shrimp), and the survival rate was recorded. Analysis of the hepatopancreas for antioxidant enzyme activity and gene expression were done after seven days. Further tissue morphology and accumulation of FRPE was analysed. The results showed that FRPE at 0.5 and 1.0 μg (g shrimp) reduce the survival rate of L. vannamei. FRPE at 0.5 and 1.0 μg (g shrimp) reduced superoxide dismutase (SOD) activity; FRPE at different concentrations reduced catalase (CAT) activity; FRPE at 0.2, 0.5 and 1.0 μg (g shrimp) increased the lipid peroxide thiobarbituric acid (TBARS) content. FRPE at 0.1, 0.2, and 0.5 μg (g shrimp) significantly affect the performance of SOD and CAT genes; FRPE at 0.2 and 0.5 μg (g shrimp) significantly improves GPx gene performance; FRPE at 1.0 μg (g shrimp) significantly reduced the expression of GPx genes. Analysis of tissue morphology shows that FRPE cause muscle, midgut gland, and hepatopancreas, and gill damage at different concentrations. In the results of accumulation of microplastic, FRPE accumulated in gill tissue at 0.2 and 0.5 μg (g shrimp); FRPE accumulated in gill, muscle and hepatopancreas tissue at 1.0 μg (g shrimp). Based on the above results, FRPE at 0.5 and 1.0 μg (g shrimp) can regulate the antioxidant enzymes of L. vannamei, increase lipid peroxide content, cause tissue damage by accumulating in the tissues. The rate of survival decreased in L. vannamei, and the impact of FRPE at 1.0 μg (g shrimp) was significant.

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