Effect of exercise on serum concentration of cartilage oligomeric matrix protein in Thoroughbreds.

This research investigated the effects of exercise on serum concentrations of cartilage oligomeric matrix protein (COMP) in horses, finding that these concentrations rose with exercise and could suggest changes in COMP’s movement into circulation and basal turnover rate.

Research Methodology

• The researchers conducted two separate experiments involving Thoroughbred horses. Experiment 1 involved 15 horses, while experiment 2 included 27 horses.
• For the first experiment, the horses which were free of any orthopedic diseases were subjected to a standardized exercise pattern. Key measurements such as the running velocity, heart rate, and blood samples were recorded immediately before and 1, 5, and 24 hours following a single exercise episode.
• In the second experiment, the horses underwent a structured training program comprising of 9 stages, each with 4 to 8 consecutive daily workouts followed by a rest day. Blood samples were collected before the first and last workouts of each stage.
• Both experiment’s primary aim was to ascertain the changes in serum COMP concentrations in response to exercise. The measurement of COMP concentration was carried out using inhibition ELISA with a monoclonal antibody against equine COMP.

Research Findings

• The results from experiment 1 showed that the average serum COMP concentration was significantly higher one and five hours following exercise than the baseline. Twenty-four hours post-exercise, COMP concentrations returned to baseline.
• It was also observed that the baseline COMP concentration increased with the increase in the velocity of running and heart rate. Particularly, the COMP concentrations were markedly higher during the third and fourth exercise tests compared to the first one.
• As for experiment 2, the findings revealed that the mean baseline COMP concentration at the final workout of each stage was significantly higher than that at the stage’s first workout, starting from stage 3.

Conclusions

• The research concluded that exercise impacts serum COMP concentrations significantly in horses.
• The fluctuations noted may indicate a possible enhancement in the movement of COMP into circulation and changes in the basal turnover rate of COMP due to exercise.