Glutathione peroxidase and selenium in the blood of healthy horses and foals affected by muscular dystrophy.

The study investigates the relationship between selenium levels and the activity of an enzyme, glutathione peroxidase, in the blood of standardbred horses, and compares these parameters between healthy foals, foals suffering from muscular dystrophy, and their mother horses. The research found a strong correlation between selenium concentration and enzyme activity in horses, but discovered no significant differences between healthy and diseased foals or their respective mothers.

Relationship between Selenium and Glutathione Peroxidase Activity

• The researchers tested the blood selenium concentrations and the activity of an enzyme called glutathione peroxidase, in 30 standardbred horses.
• They found a strong correlation between selenium concentrations and glutathione peroxidase activity in these horses, with a correlation coefficient (r) of +0.97.
• This indicates that selenium levels in the blood of horses may have a significant impact on the functioning of the enzyme glutathione peroxidase, which serves a crucial function in protecting the organism from oxidative damage.

Comparison Between Healthy Foals, Foals with Muscular Dystrophy, and Their Respective Mares

• The researchers also investigated the activity of glutathione peroxidase in foals with muscular dystrophy, healthy foals, and their respective mother horses.
• Despite the known impacts of muscular dystrophy, there were no detectable differences in the enzyme’s activity levels between the sick and healthy foals.”
• Similar results were found when comparing the enzyme activity levels between the mares of healthy foals and mares of foals with muscular dystrophy. This suggests that the activity of this particular enzyme is not affected by the health status of the foals or their mothers.

Implications and Future Research

• This research provides important insights into the interplay between selenium levels and the action of glutathione peroxidase in horses.
• However, the lack of differences in enzyme activities between healthy and diseased foals and their mothers suggests that other factors besides selenium levels and this specific enzyme’s activity may play key roles in equine muscular dystrophy.
• These results pave the way for future research to further investigate potential factors influencing horse health, particularly relating to conditions like muscular dystrophy.