Comparison of different liquid chromatography stationary phases in LC-HRMS metabolomics for the detection of recombinant growth hormone doping control.

This research article involves devising a better method to detect the administration of growth hormone (GH) in horse racing, a substance believed to enhance performance. The study examined the use of different liquid chromatography stationary phases in combination with high-resolution mass spectrometry metabolism studies to discern changes caused by equine growth hormone use.

Objective of the Research

• The research aimed to increase the efficiency of detecting growth hormone usage in horse racing. This was attempted by studying metabolomics, specifically how the hormone altered the metabolic profile of the treated animals.
• The researchers also intended to compare the effects of using different chromatographic columns, including Uptisphere Strategy NEC, Uptisphere HDO and Luna hydrophilic interaction chromatography phases.

Methodology and Approach

• The scientific team conducted a metabolomics study using LC-high resolution mass spectrometry to examine metabolic changes caused by injecting horses with equine growth hormones.
• The team identified several ions responsible for altering the metabolic profiles of the treated animals, though they were not structurally identified.
• The study was initially performed using Uptisphere Strategy NEC as the chromatographic column.
• Later, after observing the increased use of new chromatographic supports like hydrophilic interaction chromatography for analyzing polar compounds in metabolomics studies, the researchers investigated the usage of Uptisphere HDO and Luna hydrophilic interaction chromatography stationary phases.
• The team analyzed urinary metabolomics fingerprints to establish comparative results with the Uptisphere Strategy NEC.

Findings and Conclusion

• The most appropriate chromatographic column for the detection of new biomarkers of growth hormone was determined. It was then utilized to create a statistical model based on the analysis of over a hundred biological samples.
• While the abstract does not specify the most effective chromatographic column among Uptisphere Strategy NEC, Uptisphere HDO, and Luna hydrophilic interaction chromatography, it implies that a more effective strategy to detect growth hormone administration has been developed.