Associations of Serum Adipokines With Subclinical Interstitial Lung Disease Among Community-Dwelling Adults

The Multi-Ethnic Study of Atherosclerosis (MESA)
Published:October 31, 2019DOI:https://doi.org/10.1016/j.chest.2019.10.011

      Background

      Adipokines have inflammatory and fibrotic properties that may be critical in interstitial lung disease (ILD). We examined associations of serum adipokine levels with CT imaging-based measures of subclinical ILD and lung function among community-dwelling adults.

      Methods

      A subset of the original Multi-Ethnic Study of Atherosclerosis cohort (n = 1,968) had adiponectin, leptin, and resistin measured during follow-up visits (2002-2005). We used regression models to examine associations of adiponectin, leptin, and resistin levels with (1) high-attenuation areas (HAAs) from CT scans (2004-2005, n = 1,144), (2) interstitial lung abnormalities (ILAs) from CT scans (2010-2012, n = 872), and (3) FVC from spirometry (2004-2006, n = 1,446). We used –(1/HAA 2), which we denoted with H, to model HAA as our outcome to meet model assumptions.

      Results

      Higher adiponectin was associated with lower HAA on CT imaging among adults with a BMI ≥ 25 kg/m 2 ( P for BMI interaction = .07). Leptin was more strongly associated with ILA among never smokers compared with ever smokers ( P for smoking interaction = .004). For every 1-SD increment of log-transformed leptin, the percent predicted FVC was 3.8% lower (95% CI, −5.0 to −2.5). Higher serum resistin levels were associated with greater HAA on CT in a fully adjusted model. For every 1-SD increment of log-transformed resistin there was an increase in H of 14.8 (95% CI, 3.4-26.3).

      Conclusions

      Higher adiponectin levels were associated with lower HAA on CT imaging among adults with a higher BMI. Higher leptin and resistin levels were associated with lower FVC and greater HAA, respectively.

      Key Words

      Abbreviations:

      BALF ( BAL fluid), HAA ( high-attenuation areas), IL ( interleukin), ILA ( interstitial lung abnormality), ILD ( interstitial lung disease), MESA ( Multi-Ethnic Study of Atherosclerosis)
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