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Donor-specific tolerance permits burn allografting without increased sepsis
J L Garrison1, P R Cunningham, R M Lust
1Department of Surgery, School of Medicine, East Carolina University, Greenville, North Carolina 27858.
The Journal of Surgical Research
|November 1, 1990
Summary
Inducing donor-specific tolerance (DST) for skin allografts after severe burns in mice did not increase infection risk. This approach avoids chronic immunosuppression, potentially improving outcomes for burn patients.
Area of Science:
- Immunology
- Surgical Research
- Burn Treatment
Background:
- Early excision and allografting are crucial for managing massive burns but require immunosuppression.
- Chronic immunosuppression increases infection risk, posing a significant challenge in burn care.
- Donor-specific tolerance (DST) offers a potential alternative to avoid chronic immunosuppression.
Purpose of the Study:
- To evaluate if inducing DST compromises host resistance to infection following a severe burn.
- To assess the safety of DST induction in conjunction with burn wound management.
Main Methods:
- Mice with a 30% total body surface area (TBSA) burn underwent excision and allografting.
- Donor-specific tolerance was induced using perigrafting antithymocyte globulin (ATG) and donor bone marrow (DBM).
- Septic challenge was induced via cecal ligation and puncture (CLP) 10 days post-burn; mortality and blood cultures were analyzed.
Main Results:
- Burn excision and grafting significantly reduced mortality (P <= 0.05).
- Allografted mice receiving DST induction (ATG or ATG + DBM) showed no increased mortality compared to isografted controls.
- Positive blood cultures were found in 97% of mortalities, indicating sepsis as the cause of death.
Conclusions:
- Induction of DST for skin allografts in a murine severe burn model does not impair host resistance to sepsis.
- This DST strategy allows for the benefits of burn excision and allografting without the complications of chronic immunosuppression.
- Skin allografting with DST presents a promising approach to improve burn management by mitigating infection risks.