Controlling the misuse of cobalt in horses.

This research article investigates the misuse of cobalt as a performance enhancing substance in equine sports. The study proposes certain thresholds for cobalt levels in a horse’s system in different contexts (race day versus non-race day), and recommends the banning of cobalt-containing supplements on race day and the day before.

Context and Methodology

• The research revolves around the misuse of cobalt in horses, particularly in equine sports. Cobalt is known to trigger hypoxia-like effects in organisms, modulating certain genes to induce erythropoietin transcription, leading to increased red blood cell production and thus, enhanced aerobic performance.
• The affordability and accessibility of cobalt salts, coupled with their oral activity, make them attractive for blood doping in sports, essentially enhancing an equine athlete’s stamina and performance.
• The authors conducted surveys of cobalt levels in race day samples, using a technique called Inductively Coupled Plasma Mass Spectrometry (ICP-MS).

Findings

• From their research, the scientists proposed certain thresholds to control cobalt misuse on raceday or in competition samples. These thresholds are set at a urinary track of 75 ng/mL and a plasma threshold of 2 ng/mL.
• Investigations on the effects of cobalt-containing supplements revealed that the common supplements could increase urinary and plasma cobalt levels beyond the proposed thresholds within just 24 hours of administration. This is a significant finding as it shows how readily cobalt levels can be manipulated in the body, making doping easier.

Suggestions for Control

• In light of their findings, the authors suggest banning the use of cobalt-containing supplements on raceday and the day before racing. This move is proposed as a way to enforce the suggested thresholds successfully.
• Considering that misuse could occur during training periods as well as racedays, separate urinary and plasma cobalt thresholds are suggested in the context of non-racedays or out-of-competition samples.
• To implement this, the recommended thresholds to control cobalt misuse are observed to be 2000 ng/mL for urinary and 10 ng/mL for plasma.
• The thresholds were recommended based on normal use of legitimate cobalt-containing supplements, ensuring that proper use won’t be affected by these regulations.