Comparison of pulmonary involvement between patients expressing anti-PL-7 and anti-Jo-1 antibodies

Lung. 2015 Feb;193(1):79-83. doi: 10.1007/s00408-014-9665-7. Epub 2014 Nov 14.

Abstract

Anti-PL-7 is an anti-tRNA synthetase antibody, and interstitial lung disease (ILD) is the most frequent complication of anti-PL-7-associated antisynthetase syndrome. However, the features of ILD have not been fully elucidated. The present study retrospectively compares 7 and 15 patients who were positive for anti-PL-7 and anti-Jo-1 antibodies, respectively. The features of ILD did not significantly differ between the two groups, but the ratio of lymphocytes in bronchoalveolar lavage fluid was higher in the Jo-1 than in the PL-7 group. High-resolution computed tomography revealed nonspecific interstitial pneumonia in all patients in the PL-7 group and organizing pneumonia in four of the 15 patients in the Jo-1 group. These findings suggest that pulmonary complications slightly differ between patients expressing anti-PL-7 and anti-Jo-1 antibodies. Further studies are required to clarify the features of ILD associated with PL-7.

Publication types

  • Comparative Study

MeSH terms

  • Adult
  • Antibodies, Antinuclear / blood*
  • Biomarkers / blood
  • Cryptogenic Organizing Pneumonia / blood
  • Cryptogenic Organizing Pneumonia / diagnosis
  • Cryptogenic Organizing Pneumonia / etiology*
  • Cryptogenic Organizing Pneumonia / immunology
  • Female
  • Humans
  • Lung / diagnostic imaging
  • Lung Diseases, Interstitial / blood
  • Lung Diseases, Interstitial / diagnosis
  • Lung Diseases, Interstitial / etiology*
  • Lung Diseases, Interstitial / immunology
  • Male
  • Middle Aged
  • Myositis / blood
  • Myositis / complications*
  • Myositis / diagnosis
  • Myositis / immunology
  • Predictive Value of Tests
  • Retrospective Studies
  • Threonine-tRNA Ligase / immunology*
  • Tomography, X-Ray Computed

Substances

  • Antibodies, Antinuclear
  • Biomarkers
  • Jo-1 antibody
  • Threonine-tRNA Ligase

Supplementary concepts

  • Antisynthetase syndrome