Abstract
Although hepatitis B virus (HBV) and hepatitis C virus (HCV) are hepatotrophic viruses, they may affect pulmonary diseases. The purpose of this study was to assess whether chronic viral hepatitis (CVH) infection was associated with a rapid decline in lung function. Repeated measurements of lung function were obtained from a well-curated health check-up database. A case was defined as an individual positive for HBsAg or anti-HCV antibody. A control was randomly selected (from the same dataset) after 1:1 matching in terms of age, sex, height, the body mass index, and smoking status. Separate analyses of non-smokers and smokers were performed. A total of 701 cases were enrolled (586 with HBV and 115 with HCV). In cross-sectional analysis, both forced expiratory volume in 1 s (FEV1) and forced vital capacity (FVC) decreased significantly only in smokers (smoking cases vs. smoking controls) (adjusted p = 6.6 × 10−5 and adjusted p = 2.2 × 10−3, respectively). In longitudinal analysis, smoking cases showed significantly greater FEV1 and FVC decline rates than did smoking controls (adjusted p = 8.5 × 10−3 and adjusted p = 1.2 × 10−5, respectively). Such associations were particularly high in smoking cases at intermediate-to-high risk of hepatic fibrosis, as evaluated by the non-invasive Fibrosis-4 index. In summary, CVH was associated with both decreased lung function and accelerated lung function decline in smokers. A non-invasive measurement of hepatic fibrosis may be useful in predicting rapid lung function decline in smokers with CVH.
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Abbreviations
- ALT:
-
Alanine aminotransferase
- AST:
-
Aspartate aminotransferase
- BMI:
-
Body mass index
- COPD:
-
Chronic obstructive pulmonary disease
- CVH:
-
Chronic viral hepatitis
- FEV1:
-
Forced expiratory volume in 1 s
- FIB-4:
-
Fibrosis-4 index
- FVC:
-
Forced vital capacity
- HBV:
-
Hepatitis B virus
- HBsAg:
-
HBV surface antigen
- HCV:
-
Hepatitis C virus
- IQR:
-
Interquartile range
- S/CO ratio:
-
Signal-to-cutoff ratio
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S-YL, S-SK, and H-WP helped in study conception and design and statistical analysis. S-SK and S-HL acquired the data. All authors analyzed and interpreted the data and critically revised the manuscript. S-YL and S–SK drafted the manuscript.
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Lee, SY., Kim, SS., Lee, SH. et al. Chronic viral hepatitis accelerates lung function decline in smokers. Clin Exp Med 23, 2159–2165 (2023). https://doi.org/10.1007/s10238-022-00963-5
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DOI: https://doi.org/10.1007/s10238-022-00963-5