Lung Biomarkers Before and After Quitting Smoking
Author Information
Author(s): Bouloukaki Izolde, Tsiligianni Ioanna G, Tsoumakidou Maria, Mitrouska Ioanna, Prokopakis Emmanuel P, Mavroudi Irene, Siafakas Nikolaos M, Tzanakis Nikolaos
Primary Institution: University of Crete, Greece
Hypothesis
What changes occur in lung-specific biomarkers after smoking cessation?
Conclusion
Nasal lavage SLPI levels decrease after one year of smoking cessation, indicating ongoing inflammation in healthy ex-smokers.
Supporting Evidence
- SLPI and CC16 levels were higher in smokers compared to never-smokers before cessation.
- Nasal lavage SLPI decreased significantly after 12 months of smoking cessation.
- No significant changes were observed in sputum biomarkers up to one year after cessation.
Takeaway
When people stop smoking, some markers in their lungs change, but it takes a long time to see big differences.
Methodology
Induced sputum and nasal lavage were collected from smokers before and after smoking cessation, and biomarker levels were measured using ELISA kits.
Potential Biases
Potential bias due to the small sample size and the nature of self-reported smoking cessation.
Limitations
The study had a small control group and a high dropout rate among smokers.
Participant Demographics
76 smokers (65 males, 11 females) with an average age of 48 years, and 10 never-smokers (8 males, 2 females) with an average age of 33 years.
Statistical Information
P-Value
p=0.033
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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