Fibronectin concentration in plasma of mares and neonatal foals.

This study analysed plasma fibronectin concentrations in both healthy adult horses and their newborn foals, using a reliable and consistent assay method. The findings suggested that these concentrations remained similar in both groups, whether before or after the foals drank their mothers’ colostrum.

Background

• The study aimed to measure the concentration of plasma fibronectin, a high-molecular-weight glycoprotein present in the soluble fraction of plasma, in healthy mares and their newborn foals.
• This protein plays significant roles in diverse physiological functions such as embryonic development, wound healing, blood clotting, and host defence mechanisms. Thus, understanding its concentration helps shed light on these critical biological processes.

Methods

• The researchers used a modified human fibronectin competitive enzyme-linked immunosorbent assay (ELISA). ELISA is an extensively used laboratory method in immunology for detecting and quantifying substances such as peptides, proteins, antibodies, and hormones.
• As the plasma fibronectin has similarities with the human fibronectin, the researchers found it reliable and reproducible to use a human fibronectin-based assay method.

Results

• Plasma fibronectin concentrations were similar in healthy mares and their newborn foals, both before and after colostrum ingestion.
• Colostrum, the first form of milk produced by the mammary glands of mammals, is highly enriched with antibodies, providing the newborns with a natural immunity boost. Despite the vital role colostrum plays in the immune response, its ingestion did not affect the plasma fibronectin concentration.
• This finding implies that the fibronectin concentration is not influenced by the initial passive immunity animals acquire from maternal milk.

Conclusion

• This study provides valuable insight into the fibronectin concentration in the plasma of mares and newborn foals, establishing that the level remains unaltered by colostrum consumption.
• These findings might help future research to better understand the role of fibronectin and its connection with various physiological processes.