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Effects of nanoplastic on cell apoptosis and ion regulation in the gills of Macrobrachium nipponense by Yiming Li; Zhiquan Liu; Qichen Jiang; Yucong Ye; Yunlong Zhao is a Environmental Science article available to read on EtoBox.

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Nanoplastic, ubiquitous in aquatic environments, are raising concern worldwide. However, studies on nanoplastic exposure and its effects on ion transport in aquatic organisms are limited. In this study, the juvenile oriental river shrimp, Macrobrachium nipponense, was exposed to five levels of nanoplastic concentrations (0, 5, 10, 20, 40 mg/L) in order to evaluate cell viability, ion content, ion transport, ATPase activity, and related gene expression. The results showed that the apoptosis rate was higher in the high concentration nanoplastic group (40 mg/L) compared to the low concentration nanoplastic group (5 mg/L) and the control group (0 mg/L). The ion content of sodium (Na+), potassium (K+), chloride (Cl−), and calcium (Ca2+) showed a decreasing trend in gill tissue compared to the control group. The Na+K+-ATPase, V(H)-ATPase, Ca2+Mg2+-ATPase, and total ATPase activities in the gills of M. nipponense showed a general decrease with the increasement of nanoplastic concentration and time of exposure. When increasing nanoplastic concentration, the expression of ion transport-related genes in the gills of M. nipponense showed first rise then descend trend. As elucidated by the res

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Author

Yiming Li; Zhiquan Liu; Qichen Jiang; Yucong Ye; Yunlong Zhao

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Environmental Science (Physical Sciences)