Changes of blood metabolites in horses after racing, with particular reference to uric acid.

The research article investigates the changes in blood metabolite levels in 30 thoroughbred horses following a race of 1110 meters, placing special attention on the variations of uric acid.

Study Methodology and Results

• The study took a sample of 30 thoroughbred horses and had them run a race of 1110 metres. The purpose was to observe any changes in their blood metabolite concentrations following the intense physical activity.
• Several different metabolites were studied. These included urea and aspartate aminotransferase, plasma sodium, potassium, and calcium, as well as plasma phosphate, creatinine, and lactic acid.
• No significant changes were found in the horses’ blood urea or aspartate aminotransferase levels within the three hours following the race.
• Immediately after the race, plasma sodium, potassium, and calcium levels were heightened. However, they returned to normal one hour after the race.
• There was a notable drop in plasma phosphate levels one hour after the race. On the other hand, the concentrations of creatinine and lactic acid increased ten minutes after the race.
• While these levels did decrease afterwards, the lactic acid level remained significantly high even one hour after the race. Creatinine levels were still high three hours after the race.

Focus on Uric Acid

• One of the key observations was on the levels of uric acid. The study found that uric acid levels were significantly high, well above resting levels, ten minutes after the race.
• Interestingly, these levels increased even further over the next hour. Additionally, urinary uric acid levels also showed elevation during this time.
• Three hours post-race, a few horses still exhibited high plasma uric acid levels. Moreover, every horse from the sample showed a significant rise in creatine phosphokinase.
• The researchers discuss potential physiological reasons for these observations. While the specific discussions are not stated, this may include the impacts of intense physical exertion on metabolic processes and the body’s methods of dealing with increased metabolic waste.