Protective Effects of Xanthine Derivatives Against Arsenic Trioxide-Induced Oxidative Stress in Mouse Hepatic and...

Area of Science:

• Toxicology
• Pharmacology
• Biochemistry

Background:

• Arsenic trioxide (ATO) is a toxicant known to induce significant organ damage.
• Oxidative stress and inflammation are key mechanisms underlying ATO-induced toxicity.
• Pentoxifylline (PTX), a xanthine derivative, possesses anti-inflammatory and antioxidant properties.

Purpose of the Study:

• To investigate the protective effects of pentoxifylline (PTX) against arsenic trioxide (ATO)-induced liver and kidney injury in a mouse model.
• To evaluate the impact of PTX on oxidative stress markers and antioxidant capacity following ATO exposure.

Main Methods:

• A mouse model was used, with animals divided into groups receiving saline, ATO, PTX, or a combination.
• Serum biochemistry, liver histopathology, and oxidative stress markers (nitric oxide, lipid peroxidation) were analyzed.
• Real-Time PCR was employed to assess the expression of antioxidant genes (CAT, GSR, GPx, MPO, SOD).

Main Results:

• ATO exposure significantly elevated serum liver and kidney damage markers and induced histopathological changes.
• ATO increased nitric oxide and lipid peroxidation, while decreasing antioxidant enzyme expression, total thiol groups, and total antioxidant capacity.
• PTX treatment ameliorated ATO-induced biochemical and histopathological damage, improved antioxidant status, but did not significantly alter nitric oxide levels.

Conclusions:

• Pentoxifylline demonstrates significant protective efficacy against arsenic trioxide-induced acute liver and kidney injury.
• PTX mitigates toxicity by enhancing antioxidant defense mechanisms and reducing oxidative stress.
• These findings suggest PTX has therapeutic potential for treating organ damage caused by various toxic insults.