Changes in malondialdehyde concentrations and glutathione peroxidase activity in purebred Arabian mares with endometritis.
Authors: Yaralioglu-Gurgoze Sema, Cetin Hayrettin, Cen Osman, Yilmaz Seval, Atli M Osman
Journal: Veterinary journal (London, England : 1997)
Summary
Endometritis remains a significant cause of subfertility in mares, yet the underlying oxidative mechanisms driving inflammation in the endometrium are incompletely understood. Researchers measured plasma malondialdehyde (MDA)—a marker of lipid peroxidation—and erythrocyte glutathione peroxidase (GPx) activity in purebred Arabian mares with clinical endometritis compared to healthy controls, revealing substantially elevated MDA concentrations alongside significantly depressed GPx activity in affected animals. These findings indicate that endometrial inflammation generates excessive free radicals, which overwhelm the antioxidant defence system and deplete the endogenous scavenging capacity. For practitioners managing subfertile mares, this work suggests that oxidative stress may represent a tractable therapeutic target; considerations around antioxidant supplementation (particularly selenium and vitamin E cofactors for GPx) or interventions to reduce free radical load warrant further investigation as adjunctive strategies alongside conventional uterine treatment protocols.
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Practical Takeaways
- •Endometritis involves oxidative stress and depletion of antioxidant systems; consider monitoring inflammatory markers in subfertile mares
- •Antioxidant supplementation may warrant investigation as an adjunctive therapy for mares with endometritis
- •Understanding the oxidative stress mechanism in endometritis could inform treatment strategies beyond standard antibiotic/anti-inflammatory protocols
Key Findings
- •Malondialdehyde (MDA) plasma concentration was significantly increased in mares with endometritis compared to healthy controls
- •Erythrocyte glutathione peroxidase (GPx) activity was significantly decreased in mares with endometritis
- •Increased lipid peroxidation consumes GPx antioxidant defenses in endometritis-affected mares