Ameliorating small bowel injury using a cavitary two-layer preservation method with perfluorocarbon and a...

Area of Science:

• Organ preservation
• Surgical innovation
• Biomedical engineering

Background:

• Small bowel (SB) preservation quality is critical for transplantation success.
• Current cold storage methods have limitations in maintaining SB viability.
• Combining perfluorocarbon (PFC) and amino acid (AA) solutions may enhance preservation.

Purpose of the Study:

• To improve small bowel (SB) cold storage quality.
• To evaluate the efficacy of combining perfluorocarbon (PFC) and a novel luminal amino acid-rich solution.
• To assess the impact on SB energetics, histology, and mucosal function.

Main Methods:

• Rodent SB was flushed with University of Wisconsin (UW) solution and then luminally treated.
• Groups included control (UW), luminal UW in PFC, luminal AA in PFC, and luminal AA in AA solution.
• Assessments included energetics (ATP), histology, and electrophysiology over 24 hours at 4°C.

Main Results:

• Groups 2-4 showed higher ATP levels than the control.
• Groups 3 and 4 (luminal AA) demonstrated superior ATP, ATP/ADP ratios, and energy charge after 12 hours.
• AA-treated tissues (Groups 3 and 4) had lower histologic injury, with Group 4 showing minimal damage after 24 hours, unlike Groups 1 and 2 which had infarction.

Conclusions:

• Combined luminal amino acid solution and oxygenated storage (PFC or AA solution) significantly improves SB energetics and mucosal function.
• This strategy shows promise for enhancing clinical small bowel preservation.
• The findings suggest a potential breakthrough in reducing ischemic injury during SB storage.