Effects of Docosahexaenoic Acid-Rich Microalgae Supplementation on Metabolic and Inflammatory Parameters in Horses With Equine Metabolic Syndrome.

The research article investigates the potential therapeutic benefits of omega-3 fatty acid, specifically docosahexaenoic acid (DHA)-rich microalgae, supplementation on metabolic and inflammatory parameters in horses with Equine Metabolic Syndrome (EMS) for 46 days. It was found that the supplementation helps in increasing circulating fatty acids, lowering serum triglycerides, potential reduction of inflammation, and modulates metabolic parameters.

Introduction and Research Objective

• The researchers aimed to study the effects of omega-3 fatty acid supplementation, specifically DHA-rich microalgae, in horses with EMS, given the health risks associated with obesity in the equine population.
• Their objective was to evaluate its impact on metabolic and inflammatory markers and establish its potential development as a pharmacological treatment regime as it’s unclear and limited resources available for EMS.

Methodology

• In the study, 10 mixed-sex and mixed-breed horses with EMS were used, where some were fed DHA-rich microalgae containing 16g DHA per horse per day for 46 days and the rest served as controls.
• The research team measured inflammatory status using a serologic enzyme-linked immunosorbent assay and in peripheral blood mononuclear cells via flow cytometry and reverse transcription polymerase chain reaction.
• They also tracked circulating fatty acids, triglyceride, leptin, and adiponectin concentrations and assessed insulin and glucose dynamics with an oral sugar test and frequently sampled intravenous glucose tolerance testing.

Findings

• The research found that post-supplementation, treated horses showed an increase in many circulating fatty acids, including DHA and had lower serum triglycerides.
• There was also a trend observed for reduced inflammation in the form of PBMC tumor necrosis factor α.
• Interestingly, control horses showed an increase in insulin responses to the oral sugar test after 46 days, which was not seen in the treated horses.

Conclusion

• The pilot study indicates that DHA-rich microalgae supplementation effectively alters circulating fatty acids and metabolic parameters, and potentially reduces inflammation in horses with EMS.
• This opens the door for further research in utilizing omega-3 fatty acid supplementation as a therapeutic strategy for metabolic dysfunction in horses and possibly other animals.