In Vitro Evaluation of the Effect of Storage at -20°C and Proximal Gastrointestinal Conditions on Viability of Equine Fecal Microbiota Transplant.

The research paper focusses on the method of Fecal microbiota transplant (FMT) and its effects when used in horses. The study investigates the effects of storage conditions on the prepared manure before the transplant procedure and how it affects microbes’ viability.

Study Objective and Method

• The objective of this study was to determine and analyze the effects of storage conditions and exposure to specific simulated conditions on the fecal microbiota transplant’s viability. The horse manure prepared for the transplant was stored at -20°C for up to 4 weeks.
• To further understand the procedure’s impact, the study simulated a passage through the proximal gastrointestinal tract. This scenario helped determine the effect of digestive tract conditions on the stored manure’s viability.

Findings of the Study

• From the experiment, a significant decrease in the viability of the microbial population was observed when the manure was stored at -20°C for more than a week. Also, the exposure to proximal GI tract conditions further diminished the microbial population’s viability.
• The gram-negative enteric bacteria, classified as anaerobic or facultatively anaerobic rods that ferment glucose and other carbohydrates, were the most significantly impacted.

Conclusion and Further Research

• Despite the findings, the study only serves as a preliminary evaluation. It suggests that more extensive work and research are necessary to determine the best practices for preserving fecal microbiota transplant’s viability for effective veterinary use. Special attention should be given to storage conditions and the procedure’s environment.