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Autoimmune diseases are a group of disorders in which the body's immune system mistakenly attacks its own cells, tissues, and organs. This results from an overactive immune response against substances and tissues normally present in the body. Let's delve into the concept and mechanism of autoimmune diseases from an immune system point of view, explore different causes and examples of such diseases, and discuss potential solutions.
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Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease
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[Interstitial pneumonia with autoimmune features: monocentric prospective study].

L A Akulkina1, A A Shchepalina1, A S Moiseev1,2

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Summary

Interstitial pneumonia with autoimmune features (IPAF) shows lower survival than connective tissue disease-interstitial lung disease (CTD-ILD). Predictors of mortality in IPAF include diabetes and usual interstitial pneumonia patterns.

Keywords:
connective tissue diseaseinterstitial lung diseaseinterstitial pneumonia with autoimmune features

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Area of Science:

  • Pulmonology
  • Rheumatology
  • Immunology

Context:

  • Interstitial pneumonia with autoimmune features (IPAF) is an emerging diagnostic category.
  • Understanding IPAF's clinical course and outcomes is crucial for patient management.
  • Comparison with established interstitial lung disease in connective tissue diseases (CTD-ILD) provides a valuable benchmark.

Purpose:

  • To characterize the demographic, clinical, serological, and morphological features of IPAF.
  • To compare survival rates between IPAF and CTD-ILD cohorts.
  • To identify predictors of mortality and progression to CTD within the IPAF group.

Summary:

  • The study analyzed 48 IPAF and 49 CTD-ILD patients, finding IPAF characterized by specific clinical, serological, and morphological findings.
  • Mortality was significantly higher in the IPAF group (29.2%) compared to CTD-ILD (6.1%).
  • Independent predictors of mortality in IPAF included diabetes mellitus, usual interstitial pneumonia pattern, and low forced vital capacity. Progression to CTD occurred in 8.3% of IPAF patients, with elevated C-reactive protein as a predictor.

Impact:

  • IPAF demonstrates a poorer survival outcome than CTD-ILD.
  • The risk of transformation from IPAF to a defined CTD is relatively low.
  • Identifying mortality predictors in IPAF can guide early intervention and improve patient prognosis.