期刊
AMERICAN JOURNAL OF TRANSPLANTATION
卷 22, 期 1, 页码 154-164出版社
WILEY
DOI: 10.1111/ajt.16785
关键词
clinical research; practice; diabetes; type 1; endocrinology; diabetology; graft survival; islet isolation; islet transplantation
资金
- Diabetes UK [BDA 06/0003362]
- National Health Service National Commissioning Group
The UK islet allotransplant program is nationally funded and provides one or two transplants to individuals with type 1 diabetes. Analysis shows that recipients of two transplants have higher graft survival over the first 12 months compared to recipients of one transplant, but function at 1 and 6 years is comparable. Minimizing the interval between 2 islet infusions may maximize cumulative impact on graft function.
The UK islet allotransplant program is nationally funded to deliver one or two transplants over 12 months to individuals with type 1 diabetes and recurrent severe hypoglycemia. Analyses were undertaken 10 years after program inception to evaluate associations between transplanted mass; single versus two transplants; time between two transplants and graft survival (stimulated C-peptide >50 pmol/L) and function. In total, 84 islet transplant recipients were studied. Uninterrupted graft survival over 12 months was attained in 23 (68%) single and 47 (94%) (p = .002) two transplant recipients (separated by [median (IQR)] 6 (3-8) months). 64% recipients of one or two transplants with uninterrupted function at 12 months sustained graft function at 6 years. Total transplanted mass was associated with Mixed Meal Tolerance Test stimulated C-peptide at 12 months (p < .01). Despite 1.9-fold greater transplanted mass in recipients of two versus one islet infusion (12 218 [9291-15 417] vs. 6442 [5156-7639] IEQ/kg; p < .0001), stimulated C-peptide was not significantly higher. Shorter time between transplants was associated with greater insulin dose reduction at 12 months (beta -0.35; p = .02). Graft survival over the first 12 months was greater in recipients of two versus one islet transplant in the UK program, although function at 1 and 6 years was comparable. Minimizing the interval between 2 islet infusions may maximize cumulative impact on graft function.
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