PM10 increases mortality risk in rheumatoid arthritis-associated interstitial lung disease

© Author(s) (or their employer(s)) 2024. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ..

OBJECTIVES: The effect of air pollution on the prognosis of rheumatoid arthritis-associated interstitial lung disease (RA-ILD) remains poorly understood. We aimed to evaluate the effect of long-term exposure to particulate matter with an aerodynamic diameter of ≤10 µm (PM10) and nitrogen dioxide (NO2) on mortality in patients with RA-ILD.

METHODS: We included 309 patients (mean age, 61.7 years; male, 44.3%) with RA-ILD. Individual-level long-term exposures to PM10 and NO2 at their residential addresses were estimated using a national-scale exposure prediction model. The effect of the two air pollutants on mortality was estimated using a Cox-proportional hazards model adjusted for individual-level and area-level characteristics.

RESULTS: The median follow-up period was 4.8 years, and 40.8% of patients died or underwent lung transplantation. The annual average concentrations of PM10 and NO2 were 56.3 μg/m3 and 22.4 ppb, respectively. When air pollutant levels were stratified by quartiles, no association was observed between air pollutant concentration and mortality in patients with RA-ILD. However, when stratified by two groups (high exposure (top 25th percentile) vs low exposure (bottom 75th percentile)), we observed a significant association between high PM10 exposure and mortality (HR 1.68; 95% CI 1.11 to 2.52; p=0.013) but no association between NO2 exposure and mortality. In the subgroup analyses, the effect of high PM10 exposure on mortality was significant in patients aged <65 years (HR 1.98; 95% CI 1.02 to 3.85; p=0.045).

CONCLUSIONS: Our results indicated that high PM10 exposure may be associated with mortality in patients with RA-ILD.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:10

Enthalten in:

RMD open - 10(2024), 1 vom: 08. Feb.

Sprache:

Englisch

Beteiligte Personen:

Kim, Soo Han [VerfasserIn]
Kim, Sun-Young [VerfasserIn]
Yoon, Hee-Young [VerfasserIn]
Song, Jin Woo [VerfasserIn]

Links:

Volltext

Themen:

Air Pollutants
Arthritis
Journal Article
Nitrogen Dioxide
Pulmonary Fibrosis
Rheumatoid Arthritis
S7G510RUBH

Anmerkungen:

Date Completed 14.02.2024

Date Revised 14.02.2024

published: Electronic

Citation Status MEDLINE

doi:

10.1136/rmdopen-2023-003680

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM368209598