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Ductal injection does not increase the islet yield or function after cold storage in a vascular perfusion model
Wataru Nakanishi1, Takehiro Imura, Akiko Inagaki
1Division of Advanced Surgical Science and Technology, Tohoku University, Sendai, Japan.
Plos One
|August 18, 2012
Summary
Ductal injection does not further improve islet yield or function when vascular perfusion is used for pancreas preservation after cold storage. Vascular perfusion alone is sufficient for optimal organ preservation.
Area of Science:
- Transplantation Biology
- Organ Preservation
- Islet Isolation
Background:
- Pancreatic ductal preservation has been suggested to enhance islet yield and function post-cold storage.
- Previous studies lacked rigorous controls, such as vascular perfusion, a standard clinical organ preservation technique.
Purpose of the Study:
- To investigate the impact of ductal injection on islet yield and function in a rat model with vascular perfusion after cold storage.
- To compare ductal injection with vascular perfusion and their combination for pancreas preservation.
Main Methods:
- A rat model of pancreas cold ischemia (10 hours) was established.
- Groups included: no perfusion, ductal injection only, vascular perfusion only, and combined ductal injection and vascular perfusion.
- Islet yield, function, viability, inflammatory mediators, and exocrine tissue pathology were assessed using Hanks' Balanced Salt Solution (HBSS), University of Wisconsin Solution (UWS), and Histidine-Tryptophan-Ketoglutarate solution (HTK).
Main Results:
- Both ductal injection and vascular perfusion improved islet yield in the HBSS model compared to controls.
- Ductal injection provided no additional benefit to islet yield, function, or inflammatory mediator suppression when combined with vascular perfusion.
- Vascular perfusion significantly reduced exocrine tissue vacuolation, an effect not seen with ductal injection alone.
Conclusions:
- Ductal injection offers no added advantage to islet yield or function when vascular perfusion is employed for pancreas preservation after cold storage.
- Vascular perfusion is a highly effective method for pancreas preservation, rendering additional ductal injection unnecessary in most clinical scenarios.
- Ductal injection may serve as a simple alternative to vascular perfusion when the latter is not feasible, but it is not required when routine vascular perfusion is performed.
