Gill histopathologies following exposure to nanosilver or silver nitrate

Journal of Toxicology and Environmental Health. Part a
Adam D HawkinsKristine L Willett

Abstract

Fish gill is the site for many crucial physiological functions. It is among the first sites of xenobiotic exposure, and gill histopathological alterations may be detected soon after toxicant exposure. Silver (Ag) is one of the most toxic metals to aquatic organisms mainly due to its ability to disrupt ionic regulation. The goal of this study was to determine the effect of ionic and nanoscale Ag on fathead minnow gills by examining gill histology and Na(+)/K(+)-ATPase immunoreactivity. Fathead minnows were exposed to two measured concentrations of silver nitrate (AgNO3: 1.3 or 3.7 μg/L as Ag(+)), citrate silver nanoparticles (citrate-AgNP: 15 or 39 μg/L), and polyvinylpyrrolidone-AgNP (PVP-AgNP) (AgNP: 11 or 50 μg/L). Circulatory disturbances were the most prevalent gill alterations detected and were significantly increased in all Ag treatment groups compared to control. AgNO3 (1.3 μg/L) was the only treatment that significantly elevated the number of total mucous goblet cells present. In all other Ag treatments, the percent of degenerated goblet cells was significantly increased compared to control. When the sum of all histopathological abnormalities (weighted index) was calculated, all Ag groups displayed a significantly highe...Continue Reading

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Sep 30, 2014·Environmental Toxicology and Chemistry·Adam D HawkinsKristine L Willett

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Citations

Mar 19, 2016·Aquatic Toxicology·Maurizio ManeraBahram Sayyaf Dezfuli
Apr 30, 2016·Journal of Toxicology and Environmental Health. Part B, Critical Reviews·Mohamed AlarabyAlba Hernández
Sep 12, 2017·Journal of Toxicology and Environmental Health. Part a·Airton da Cunha MartinsFernando Barbosa
Dec 28, 2018·Nanotoxicology·Bedanta Kumar Barik, Monalisa Mishra
Mar 19, 2020·International Journal of Molecular Sciences·Liyuan QiangJinping Cheng
Oct 29, 2020·Journal of Applied Toxicology : JAT·Eşref Demir
Jun 3, 2021·International Journal of Environmental Research and Public Health·Maurizio Manera
Nov 2, 2021·Journal of Toxicology and Environmental Health. Part a·Roland VogtDunja Katharina Lamatsch

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Methods Mentioned

BETA
transmission electron microscopy
dynamic light scattering
flow fractionation
dissections

Software Mentioned

Improvision Openlab
GraphPad Prism
ImagePro Plus
Openlab

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