Tumour necrosis factor-alpha gene expression by alveolar macrophages in human lung allograft recipient with recurrence of sarcoidosis. Toulouse Lung Transplantation Group

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Abstract
Recurrence of sarcoidosis in lung allografts is an interesting model to study the pathogenesis of this disease. We report a case of sarcoidosis recurrence in a single lung allograft recipient 2 years after transplantation. The expression of tumour necrosis factor-alpha (TNF-alpha) gene by alveolar macrophages was monitored. The TNF-alpha gene was not expressed at the time of recurrence of sarcoidosis, but only later when prominent granulomas were observed.