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Albumin improves islet isolation: specific versus nonspecific effects
G A Perdrizet1, M J Rewinski, S A Bartus
1Department of Surgery, Hartford Hospital, CT 06102-5037, USA.
Transplantation Proceedings
|December 1, 1995
Summary
Bovine serum albumin (BSA) enhances islet isolation yields and protects islets from injury. This albumin effect is independent of collagenase source and lot, and not solely due to colloid action.
Area of Science:
- Biotechnology
- Islet Isolation
- Organ Transplantation
Background:
- Islet isolation is crucial for treating type 1 diabetes.
- Standard collagenase digestion techniques are used for islet isolation.
- Improving islet yields and viability is a key challenge.
Purpose of the Study:
- To investigate the role of Bovine Serum Albumin (BSA) in islet isolation.
- To determine if BSA improves islet yields and protects against injury.
- To elucidate the mechanism of BSA's effect.
Main Methods:
- Standard collagenase digestion techniques were employed.
- Islet isolation was performed with and without BSA.
- Comparison with Hydroxyethyl Starch (HES) to assess colloid action.
- Assessment of islet protection against warm ischemic injury.
Main Results:
- BSA-containing solutions significantly improve islet yields.
- The beneficial effect of BSA is consistent across different collagenase sources and lots.
- BSA's protective action is not solely due to its colloid properties.
- BSA demonstrated a unique protective effect against warm ischemic injury, superior to HES.
Conclusions:
- BSA is a valuable additive for enhancing islet isolation efficiency.
- BSA offers protection against warm ischemic injury, improving islet viability.
- The mechanism of BSA's benefit involves more than just colloid action, suggesting specific albumin properties are key.