Effects of waterborne ZnO nanoparticles and Zn2+ions on the gills of rainbow trout (Oncorhynchus mykiss): Bioaccumulation, histopathological and ultrastructural changes

Mansouri, B. and Johari, S.A. and Azadi, N.A. and Sarkheil, M. (2018) Effects of waterborne ZnO nanoparticles and Zn2+ions on the gills of rainbow trout (Oncorhynchus mykiss): Bioaccumulation, histopathological and ultrastructural changes. Turkish Journal of Fisheries and Aquatic Sciences, 18 (5). pp. 739-746.

[img] Text
Effects-of-waterborne-ZnO-nanoparticles-and-Znions-on-the-gills-of-rainbow-trout-Oncorhynchus-mykiss-Bioaccumulation-histopathological-and-ultrastructural-changes2018Turkish-Journal-of-Fisheries-and-Aquatic-SciencesO.pdf

Download (921kB)
Official URL: https://www.scopus.com/inward/record.uri?eid=2-s2....

Abstract

The aim of this study was comparing the toxic effects of zinc oxide nanoparticles (ZnO NPs) versus zinc ions (Zn2+) at a high non-lethal (500μg/L) and a low environmental relevant (0.05μg/L) concentrations on gills of rainbow trout (Oncorhynchus mykiss) following 14 days of waterborne exposure. Structural alterations, histopathological anomalies, and zinc bioaccumulation were investigated in the gills using field emission scanning electron microscopy (FESEM), hematoxylin and eosin staining (H&E), and graphite furnace atomic absorption spectrophotometry (GFAAS) respectively. Some damages such as shortening and fusion of secondary lamellae, surface epithelium hypertrophy, and hyperplasia of the primary lamellae were observed in the gill tissue. Histopathological alterations of gills were minimum in both 659777250 exposed (control) fish and fish exposed to 0.05μg/L Zn2+. The severity of gill damages were higher in fish exposed to 500μg/L ZnO NPs compared to 500μg/L Zn2+and 0.05μg/L ZnO NPs. The Zn accumulation in the gills was concentration-dependent such that bioaccumulation order was as 500μg/L Zn2+> 500μg/L ZnO NPs � 0.05μg/L Zn2+> 0.05μg/L ZnO NPs> control. In summary, the results of present study showed that although the accumulation capability of Zn2+was higher than ZnO NPs, but NPs cause more structural damages to gills compare to ions. © 2018, Central Fisheries Research Inst. All rights reserved.

Item Type: Article
Additional Information: cited By 0
Subjects: QV Pharmacology
Depositing User: eprints admin
Date Deposited: 19 Dec 2018 15:31
Last Modified: 10 Jul 2019 10:46
URI: http://eprints.iums.ac.ir/id/eprint/6621

Actions (login required)

View Item View Item