The use of capillary column gas chromatography and negative ion chemical ionization mass spectrometry to confirm the administration of synthetic corticosteroids to horses.

This research article is about the development of a method to confirm the presence of synthetic corticosteroids in horse urine, using techniques such as capillary column gas chromatography and negative ion chemical ionization mass spectrometry.

Objective of the Study

• The study aimed to develop a method to confirm whether synthetic corticosteroids have been administered to horses. The need for such a method arises from the fact that synthetic corticosteroids can be used to enhance the performance of horses artificially, a practice that is usually considered unethical or illegal in professional sports.

Methods Used

• The researchers used capillary column gas chromatography and negative ion chemical ionization mass spectrometry (NIMS) in their research. These are analytical techniques commonly used to identify and quantify different substances in a sample.
• The team experimented with the corticosteroids prednisolone, betamethasone and dexamethasone, creating MO-TMS derivatives of these compounds and analyzing them with the stated methods.

Results

• The results of the mass spectrometry showed clear differences between the spectra of the three different steroid derivatives. The mass to charge ratio (m/z) showed significant diagnostic ions at values greater than 300.
• This outcome resulted in a definitive discrimination between the three steroid derivatives, which is crucial in confirming the type of steroid used.

Application of the Findings

• With the results obtained, the researchers successfully developed a method using capillary column gas chromatography and negative ion chemical ionization mass spectrometry to confirm the presence of these corticosteroids in horse urine.
• This development is important because, once a synthetic corticosteroid is administered to a horse, it is metabolized and usually excreted in the urine. The ability to detect these substances in horse urine, therefore, provides a way to confirm whether a horse has been artificially enhanced with these substances.