Key result
Adding rIL-4 to rIL-2 cultures increases T cell propagation from grade 0-1a heart biopsies by ~61%.
Why the study?
Activated T cells can be propagated from cardiac allograft EMB samples using rIL-2, but propagation is sometimes unsuccessful or yields too few cells for further study.
Does the addition of rIL-4 to rIL-2 improve the propagation of activated T lymphocytes from endomyocardial biopsy samples of heart transplant recipients?
Population
532 consecutive EMB samples from 120 adult and pediatric heart transplant recipients
Comparison
Culture with rIL-2 plus rIL-4 versus culture with rIL-2 alone
Design
Ex vivo culture study of biopsy samples
Follow-up
14 days
Authors
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May enhance ex vivo T-cell expansion from low-rejection biopsies; leaves open utility for transplant immunology research pending higher-level evidence.
Does the addition of rIL-4 to rIL-2 improve the propagation of activated T lymphocytes from endomyocardial biopsy samples of heart transplant recipients?
Absolute Event Rate: 29% vs 18%
p-value: p=0.02
The addition of rIL-4 to rIL-2 enhances the ex vivo propagation of donor-specific T cells from heart biopsy samples, particularly in cases with minimal rejection, facilitating further immunological studies.
Webber et al. (2002) studied Heart transplant recipients (n=120). Recombinant interleukin-4 (rIL-4) vs. rIL-2 alone (30 U/mL) was evaluated on Lymphocyte growth in grade 0-1a endomyocardial biopsies (p=0.02). Addition of rIL-4 to rIL-2 cultures enhanced the propagation of T cells from grade 0-1a heart biopsy samples compared to rIL-2 alone (29% vs 18%, p=0.02).
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