Adiposity and Interstitial Lung Abnormalities in Community-Dwelling Adults: The MESA Cohort Study. Academic Article uri icon

Overview

abstract

  • BACKGROUND: Obesity is associated with restrictive ventilatory defects and a faster rate of decline in FVC. This association is not exclusively mediated by mechanical factors and may reflect direct pulmonary injury by adipose-derived mediators. RESEARCH QUESTION: Is adipose tissue involved in the pathogenesis of interstitial lung disease (ILD)? STUDY DESIGN AND METHODS: We evaluated the association of CT measures of pericardial, abdominal visceral, and abdominal subcutaneous adipose tissue with high-attenuation areas (HAAs) and interstitial lung abnormalities (ILAs) in a large multicenter cohort study of community-dwelling adults, using multivariable-adjusted models. We secondarily evaluated the association of adipose depot size with FVC and biomarkers of obesity and inflammation. RESULTS: In fully adjusted models, every doubling in pericardial adipose tissue volume was associated with a 63.4-unit increase in HAA (95% CI, 55.5-71.3), 20% increased odds of ILA (95% CI, -2% to 50%), and a 5.5% decrease in percent predicted FVC (95% CI, -6.8% to -4.3%). IL-6 levels accounted for 8% of the association between pericardial adipose tissue and HAA. Every doubling in visceral adipose tissue area was associated with a 41.5-unit increase in HAA (95% CI, 28.3-54.7), 30% increased odds of ILA (95% CI, -10% to 80%), and a 5.4% decrease in percent predicted FVC (95% CI, -6.6% to -4.3%). IL-6 and leptin accounted for 17% and 18%, respectively, of the association between visceral adipose tissue and HAA. INTERPRETATION: Greater amounts of pericardial and abdominal visceral adipose tissue were associated with CT measures of early lung injury and lower FVC in a cohort of community-dwelling adults. Adipose tissue may represent a modifiable risk factor for ILD.

publication date

  • April 15, 2021

Research

keywords

  • Adiposity
  • Independent Living
  • Respiratory System Abnormalities

Identity

PubMed Central ID

  • PMC8411451

Scopus Document Identifier

  • 85111318910

Digital Object Identifier (DOI)

  • 10.1016/j.chest.2021.03.058

PubMed ID

  • 33844978

Additional Document Info

volume

  • 160

issue

  • 2