Abstract
The efficacy of islet transplant is compromised by a significant loss of islet mass posttransplant due to an innate inflammatory reaction. We report the use of a combination of etanercept and anakinra (ANA+ETA) to block inflammatory islet damage in 100 patients undergoing total pancreatectomy with islet autotransplant. The patients were divided into 3 groups: no treatment (control [CTL]), etanercept alone (ETA), or a combination of etanercept and anakinra (ANA+ETA). Peritransplant serum samples were analyzed for protein markers of islet damage and for inflammatory cytokines. Graft function was assessed by fasting blood glucose, basal C-peptide, secretory unit of islet transplant objects (SUITO) index, and hemoglobin A1c . Administration of both antiinflammatory drugs was well tolerated without any major adverse events. Reductions in interleukin-6, interleukin-8, and monocyte chemoattractant protein 1 were observed in patients receiving ANA+ETA compared with the CTL group, while also showing a modest improvement in islet function as assessed by basal C-peptide, glucose, hemoglobin A1c , and SUITO index but without differences in insulin dose. These results suggest that double cytokine blockade (ANA+ETA) reduces peritransplant islet damage due to nonspecific inflammation and may represent a promising strategy to improve islet engraftment, leading to better transplant outcomes.
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