Elevation of surfactant protein A in plasma and sputum in cigarette smokers
| Autor: | Pentti Nieminen, Katri Vuopala, Witold Mazur, Hideo Kobayashi, Vuokko L. Kinnula, Steffen Ohlmeier, Tuula Toljamo |
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| Rok vydání: | 2011 |
| Předmět: |
Male
Pulmonary and Respiratory Medicine medicine.medical_specialty Gastroenterology Internal medicine Blood plasma Pulmonary fibrosis medicine Humans Longitudinal Studies Respiratory system Lung Aged Pulmonary Surfactant-Associated Protein A business.industry Smoking Respiratory disease Phlegm Age Factors Sputum Middle Aged medicine.disease Respiratory Function Tests respiratory tract diseases Surfactant protein A medicine.anatomical_structure Cough Immunology Female Smoking Cessation medicine.symptom business |
| Zdroj: | European Respiratory Journal. 38:277-284 |
| ISSN: | 1399-3003 0903-1936 |
| DOI: | 10.1183/09031936.00110510 |
| Popis: | Serum surfactant protein (SP)-A has been postulated to associate with pulmonary fibrosis, but its role in cigarette smoking-related lung diseases is undefined. SP-A levels in plasma and induced sputum in nonsmokers, smokers with respiratory symptoms (cough and/or phlegm) and symptom-free smokers were assessed using a validated EIA method. A total of 474 current smokers without any diseases or medications were enrolled and followed for 2 yrs with 111 of them succeeding in stopping. Plasma SP-A level was detectable in all subjects and elevated in smokers independently of the symptoms compared to nonsmokers (p = 0.001). After 2 yrs of follow-up, the SP-A level was higher in those who continued smoking compared to the quitters (p0.001). Plasma SP-A levels were associated with age, smoking history and lung function. Sputum (n = 109) SP-A was nondetectable in most nonsmokers, whereas smoking and symptoms increased sputum SP-A highly significantly (p = 0.001). In conclusion, SP-A may be involved in pathogenesis of cigarette smoking-related lung diseases. Further studies are needed to elucidate the role of SP-A in chronic obstructive pulmonary disease. |
| Databáze: | OpenAIRE |
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