Regional blood flow to the stomach and small intestine in ponies.

This research article detailed a study conducted on the regional blood flow to the stomach and small intestine in ponies. Using carbonized microspheres as a tracer, the researchers found that the non-glandular stomach region showed the least blood flow per 100g tissue while the duodenum demonstrated the highest blood flow.

Methodology

• The research team used nine anesthetized ponies for the research. They injected carbonized, 85Sr-labeled microspheres into the left atrium (upper-left heart chamber responsible for receiving oxygen-rich blood from lungs) of the ponies. These microspheres were 15 +/- 5 microns in diameter.
• The microspheres served as a tracer to determine the distribution of blood flow in the ponies’ digestive system, specifically the stomach and small intestine.

Measurements & Results

• In four of these ponies, the researchers measured the regional blood flows specifically to the mucosal-submucosal layers of the stomach and the small intestine.
• The study revealed that the non-glandular region of the stomach received the least blood per 100g tissue. This non-glandular region in horses and ponies is essentially a region that lacks the glands which produce digestive enzymes and stomach acid.
• Contrarily, the part of the small intestine called the duodenum showed the most significant blood flow. The duodenum is the first and shortest segment of the small intestine where a significant part of digestion takes place.

Conclusion

• The research concluded that blood flow distribution in the analyzed part of the digestive system in ponies was uneven, with the duodenum receiving a significantly higher blood flow than the glandular stomach region, the jejunum (middle part of small intestines), and the ileum (last part of small intestines).
• This finding is important for deeper understanding of the physiology of the digestive system in ponies and horses, potential diagnosis and treatment of gastrointestinal diseases in these animals.