Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0034069 (pulmonary fibrosis)
 7,050 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Rheumatoid arthritis is a multi-system disease. Pulmonary manifestations and complications include pleural disease, pulmonary infections, pneumonitis and interstitial pulmonary fibrosis, bronchogenic carcinoma, arteritis with pulmonary hypertension, obliterative bronchiolitis, bronchiectasis, and amyloidosis. Pulmonary rheumatoid nodules, including rheumatoid pneumoconiosis (Caplan's Syndrome), can result in spontaneous pneumothorax. In this article, the authors present a patient with rheumatoid arthritis and recurrent spontaneous pneumothorax. Through investigation, a bronchopleural fistula caused by a rheumatoid nodule was revealed. The authors also discuss the potential pitfalls caused by a lung nodule in a patient with rheumatoid arthritis, including the overlap with bronchogenic carcinoma and confusion with tuberculosis.
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PMID:Case report: recurrent pneumothorax in a patient with rheumatoid arthritis. 807 34

Although rare, rheumatoid pneumoconiosis, also known as Caplan's syndrome, can occur in workers exposed to silica, as well as in patients with silicosis, coal workers' pneumoconiosis or asbestosis. Prevalence is higher among patients with silicosis, despite the fact that it was originally described in coal workers with pneumoconiosis. The classical finding that defines this syndrome is that of rheumatoid nodules in the lungs, regardless of whether there are small rounded opacities suggestive of pneumoconiosis or large opacities consistent with massive pulmonary fibrosis, with or without clinical rheumatoid arthritis. We describe the case of a female patient with rheumatoid arthritis, diagnosed 34 years after 7 years of occupational exposure to silica at a porcelain plant. A chest X-ray showed circular opacities of 1-5 cm in diameter, bilaterally distributed at the periphery of the lungs. A CT-guided thoracic punch biopsy of one of those nodules revealed that it was rheumatoid nodule surrounded by a palisade of macrophages, which is typical of Caplan's syndrome. Aspects of diagnosis, classification and occurrence of this syndrome are discussed, emphasizing the importance of the occupational anamnesis of patients with rheumatoid arthritis and lung opacities on chest X-rays.
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PMID:Rheumatoid pneumoconiosis (Caplan's syndrome) with a classical presentation. 1982 Aug 22

Autoimmune disorders are induced by various environmental and occupational substances. Among the most typical factors involving these substances, it is well known that silica exposure causes not only pulmonary fibrosis known as silicosis, but also induces autoimmune diseases such as rheumatoid arthritis known as Caplan's syndrome, systemic sclerosis, systemic lupus erythematosus, and anti-neutrophil cytoplasmic autoantibody (ANCA)-related vasculitis/nephritis. To investigate the immunological effects of silica, a focus on the occurrence of autoimmune dysfunction may clarify these autoimmune diseases and develop effective tools for observing silicosis patients (SIL). In this review, our investigation concerns the autoantibodies found in SIL, alteration of CD95/Fas and related molecules in SIL, case-oriented and in vitro analyses of silica-induced activation of responder and regulatory T cells, and supposed mechanisms of reduction of CD4+25+FoxP3+ regulatory T cells (T(reg)) in SIL. Further studies are required to investigate Th17 and the interaction with T(reg) in SIL to understand the cellular and molecular mechanisms of environmental and occupational autoimmune disorders.
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PMID:Environmental factors producing autoimmune dysregulation--chronic activation of T cells caused by silica exposure. 2222 3