Studies on liver damage induced by nanosized-titanium dioxide in mouse

Area of Science:

• Toxicology
• Nanotechnology
• Biochemistry

Background:

• Titanium dioxide (TiO2) nanoparticles are widely used in various industries.
• Understanding the potential health risks, particularly liver toxicity, of nanosized TiO2 is crucial.

Purpose of the Study:

• To investigate the effects of nanosized TiO2 exposure on mouse liver tissue.
• To assess biochemical and ultrastructural changes in the liver following exposure.

Main Methods:

• Mice were exposed to nanosized TiO2.
• Liver biochemical parameters (transaminases, alkaline phosphatase) were measured.
• Liver ultrastructure was examined using transmission electron microscopy.
• Antioxidant enzyme activities (superoxide dismutase, catalase, glutathione peroxidase, aldehyde dehydrogenase) were assessed.

Main Results:

• Exposure to nanosized TiO2 significantly increased glutamic-oxaloacetic transaminase (AST), glutamic-pyruvic transaminase (ALT), and alkaline phosphatase (ALP) levels.
• Transmission electron microscopy revealed accumulation of nanosized TiO2 in the periphery of liver sinusoids.
• Activities of superoxide dismutase (SOD), catalase (CAT), and aldehyde dehydrogenase (ALDH) were significantly inhibited.
• Glutathione peroxidase (GPx) activity remained unchanged.

Conclusions:

• Nanosized TiO2 exposure induces liver tissue damage in mice.
• Biochemical and ultrastructural alterations suggest a toxic effect of nanosized TiO2 on the liver.
• The observed changes in enzyme activities highlight the potential for oxidative stress and cellular damage.