Association of soluble HLA-G with acute rejection episodes and early development of bronchiolitis obliterans in lung transplantation

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Abstract

Lung transplantation has evolved into a life-saving therapy for select patients with end-stage lung diseases. However, long-term survival remains limited because of bronchiolitis obliterans syndrome (BOS). Soluble HLA-G, a mediator of adaptive immunity that modulates regulatory T cells and certain classes of effector T cells, may be a useful marker of survival free of BOS. We conducted a retrospective, single-center, pilot review of 38 lung transplant recipients who underwent collection of serum and bronchoalveolar lavage fluid 3, 6 and 12 months after transplantation, and compared soluble HLA-G concentrations in each to the presence of type A rejection and lymphocytic bronchiolitis in the first 12 months and to the presence of BOS at 24 months after transplantation. Lung soluble HLA-G concentrations were directly related to the presence of type A rejection but not to lymphocytic bronchiolitis. Our data demonstrate that soluble HLA-G concentrations in bronchoalveolar lavage but not in serum correlates with the number of acute rejection episodes in the first 12 months after lung transplantation, and thus may be a reactive marker of rejection. © 2014 White et al.

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White, S. R., Floreth, T., Liao, C., & Bhorade, S. M. (2014). Association of soluble HLA-G with acute rejection episodes and early development of bronchiolitis obliterans in lung transplantation. PLoS ONE, 9(7). https://doi.org/10.1371/journal.pone.0103643

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