Titanium Dioxide Nanoparticles (TiO2NPs) could cause alterations in exposed aquatic species, in terms of oxygen consumption, ammonia excretion and tissues functionality therefore, the aim of the present study is to evaluate the effects of acute exposure to different concentrations of TiO2NPs (0.1, 0.5, 1.0 and 2.5 mgL-1) on routine metabolism (oxygen consumption and ammonia excretion) and histological parameters (branchial and hepatic) in Oreochromis niloticus. After 24 hours, we observed an increase in oxygen consumption of 2.36 and 3.23 times in groups exposed to 1.0 and 2.5 mgL-1 of TiO2NPs respectively, as well as an increase in ammonia excretion of 3.54, 4.0 and 4.82 times higher in groups exposed to 0.5, 1.0 and 2.5 mgL-1 of TiO2NPs respectively, compared to the control group. Histological analysis showed, after 72 hours, moderate to severe alterations in both gills and liver of TiO2 exposed fish at concentrations 1.0 and 2.5 mgL-1, the severity and occurrence of the alteration observed was grade 3 (severe and extensive pathological alterations). We concluded that waterborne exposure of Nile tilapia to TiO2NPs caused alteration in routine metabolism and histological parameters in a dose-dependent manner.

Rezende, K.F.O., Bergami, E., Alves, K.V.B., Corsi, I., Barbieri, E. (2018). Titanium dioxide nanoparticles alter routine metabolism and cause histopathological alterations in oreochromis niloticus. BOLETIM DO INSTITUTO DE PESCA, 44(2) [10.20950/1678-2305.2018.343].

Titanium dioxide nanoparticles alter routine metabolism and cause histopathological alterations in oreochromis niloticus

Corsi, Ilaria;
2018-01-01

Abstract

Titanium Dioxide Nanoparticles (TiO2NPs) could cause alterations in exposed aquatic species, in terms of oxygen consumption, ammonia excretion and tissues functionality therefore, the aim of the present study is to evaluate the effects of acute exposure to different concentrations of TiO2NPs (0.1, 0.5, 1.0 and 2.5 mgL-1) on routine metabolism (oxygen consumption and ammonia excretion) and histological parameters (branchial and hepatic) in Oreochromis niloticus. After 24 hours, we observed an increase in oxygen consumption of 2.36 and 3.23 times in groups exposed to 1.0 and 2.5 mgL-1 of TiO2NPs respectively, as well as an increase in ammonia excretion of 3.54, 4.0 and 4.82 times higher in groups exposed to 0.5, 1.0 and 2.5 mgL-1 of TiO2NPs respectively, compared to the control group. Histological analysis showed, after 72 hours, moderate to severe alterations in both gills and liver of TiO2 exposed fish at concentrations 1.0 and 2.5 mgL-1, the severity and occurrence of the alteration observed was grade 3 (severe and extensive pathological alterations). We concluded that waterborne exposure of Nile tilapia to TiO2NPs caused alteration in routine metabolism and histological parameters in a dose-dependent manner.
2018
Rezende, K.F.O., Bergami, E., Alves, K.V.B., Corsi, I., Barbieri, E. (2018). Titanium dioxide nanoparticles alter routine metabolism and cause histopathological alterations in oreochromis niloticus. BOLETIM DO INSTITUTO DE PESCA, 44(2) [10.20950/1678-2305.2018.343].
File in questo prodotto:
File Dimensione Formato  
corsi30.pdf

accesso aperto

Tipologia: PDF editoriale
Licenza: Creative commons
Dimensione 1.3 MB
Formato Adobe PDF
1.3 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/1070936