Abstract
Fibrotic lung disorders, either idiopathic, or associated with a specific etiology or a specific condition such as scleroderma, are increasingly recognized. As a whole they constitute a group of diseases characterized by the progressive destruction of the lung which ultimately leads to chronic respiratory failure and death. Improving the prognosis of these disorders requires the identification of drugs capable of inhibiting partially or totally the progression of lung fibrosis, and perhaps to reversing established fibrosis. This has been the focus of huge efforts from academic groups and pharma companies, and more than 20 different molecules are being investigated in clinical trials in idiopathic pulmonary fibrosis (IPF) a well defined and relatively frequent fibrotic lung disease of unknown etiology. However, until now, only one drug has been approved for lung fibrosis treatment. This drug, pirfenidone, has been shown to slow the decline of lung function in IPF, but no drug has demonstrated on the survival of patients with lung fibrosis (1). The effort must be prolonged and intensified.
Highlights
Fibrotic lung disorders, either idiopathic, or associated with a specific etiology or a specific condition such as scleroderma, are increasingly recognized
Scleroderma affects mainly women, whereas idiopathic pulmonary fibrosis (IPF) predominates in men; usual interstitial pneumonia is the pathological pattern of IPF, whereas non specific interstitial pneumonia is the main pattern in patients with scleroderma; the MUC5B promotor polymorphism is associated with IPF whereas it is not observed in patients with IPF [3]; IPF is rapidly progressive disorder as compared with the slowly moving scleroderma-associated lung fibrosis [2]
Gisela Lindhal and colleagues recently compared the mRNA microarray profile of lung fibroblasts isolated from patients with IPF, systemic sclerosis, or controls [10]
Summary
Either idiopathic, or associated with a specific etiology or a specific condition such as scleroderma, are increasingly recognized. Beside IPF, scleroderma-associated lung fibrosis is a well recognized fibrotic disorder. Lung fibrosis is the main cause of death of patients with scleroderma [2].
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