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Oxidative Modifications of Rat Liver Cell Components During Fasciola hepatica Infection

Ewa Siemieniuk1, Lidia Kolodziejczyk, Elżbieta Skrzydlewska

  • 1Department of Inorganic and Analytical Chemistry, Medical University of Bialystok, Poland.

Toxicology Mechanisms and Methods
|August 22, 2009
PubMed

Insights

Fasciola hepatica infection in rats impairs liver antioxidant capacity, leading to increased oxidative damage to proteins and lipids. This parasitic infection significantly alters liver function and elevates liver damage markers.

Area of Science:

  • * Parasitology
  • * Biochemistry
  • * Hepatology

Background:

  • * Fasciola hepatica is a liver fluke that infects various mammals, causing significant economic losses in livestock.
  • * Hepatic parasitic infections can induce oxidative stress and alter cellular components.

Purpose of the Study:

  • * To investigate the impact of Fasciola hepatica infection on oxidative modifications of rat liver proteins and lipids.
  • * To assess changes in antioxidant status and liver damage markers during the course of infection.

Main Methods:

  • * Wistar rats were infected with F. hepatica metacercariae.
  • * Liver damage markers, antioxidant status (Total Antioxidant Status - TAS), and oxidative modifications of lipids and proteins were measured at 4, 7, and 10 weeks post-infection.

Main Results:

  • * F. hepatica infection decreased TAS, indicating reduced antioxidant capacity.
  • * Increased lipid peroxidation products (conjugated dienes, lipid hydroperoxides, malondialdehyde, 4-hydroxynonenal) and protein modifications (increased carbonyl groups, dityrosine; decreased tryptophan, sulfhydryl, amino groups) were observed.
  • * Elevated serum alanine aminotransferase (ALT) and aspartate aminotransferase (AST) levels indicated liver damage. Lysosomal and total cathepsin B activity decreased.

Conclusions:

  • * Fasciola hepatica infection induces significant oxidative stress in rat liver, damaging cellular components.
  • * Oxidative damage to lipids and proteins, coupled with altered antioxidant capacity, leads to impaired liver function.
  • * The study highlights the detrimental effects of fasciolosis on liver integrity and function.

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