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- W2107600535 abstract "Recovery of cytomegalovirus (CMV)-specific CD8+ T cells after allogeneic stem cell transplantation (SCT) is critical for protection against CMV infection and disease. Moreover, Foxp3+CD4+CD25(high) regulatory T cells (Tregs) are a major regulator of adaptive immunity, preventing graft-versus-host disease (GVHD) and so promoting timely and complete immune recovery. The aim of our study was to evaluate the recovery of circulating tetramer-based CMV-specific CD8+ T cells and T regs in 46 patients after allogeneic peripheral blood SCT (PBSCT). CMV infection and/or disease was observed in 7% and 94% of patients with or without CMV-specific CD8+ T cells recovery (P < .001), and in 77% and 4% of patients with or without acute GVHD (aGVHD) (P < .001), respectively. T regs values were higher in patients without than with CMV infection and/or disease at 2 (P < .001) and 3 months (P < .001) after allogeneic PBSCT, respectively. Moreover, we observed a positive correlation between T regs and the recovery of CMV-specific CD8+ T cells at 2 (r = .61, P < .0001) and 3 (r = .72, P < .00001) months, respectively. Tregs were higher in patients without than with aGVHD at 1, 2 (P < .001) and 3 months (P < .0001), respectively. At multivariate logistic regression, aGVHD (odds ratio [OR]: 2.60, 95% confidence interval [CI] [1.3-5.0], P = .0006) and CMV-specific CD8+ T cells recovery (OR:2.25, 95% CI [1.2-4.8], P = .05) were correlated with CMV infection and/or disease, whereas no correlation was found for Tregs, absolute neutrophil count, patients' and donors' age, disease status pretransplantation, type of disease, and CMV serology. Taken together, our data may suggest the existence of a correlation between Tregs and the recovery of CMV-specific CD8+ T cells; Tregs may preserve an optimal microenvironment for the reconstitution of functional immunity and mediate protective effects against aGVHD." @default.
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- W2107600535 date "2011-04-01" @default.
- W2107600535 modified "2023-09-27" @default.
- W2107600535 title "Recovery of CMV-Specific CD8+ T Cells and Tregs after Allogeneic Peripheral Blood Stem Cell Transplantation" @default.
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- W2107600535 doi "https://doi.org/10.1016/j.bbmt.2010.04.011" @default.
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