Relationship of serum elastin peptide level to single breath transfer factor for carbon monoxide in French coal miners.
نویسندگان
چکیده
BACKGROUND Clinical and epidemiological studies have given discordant results on the usefulness of the level of circulating elastin peptide (EP), a potential marker of both elastin destruction (a key phenomenon in pulmonary emphysema) and neosynthesis, for assessing structural changes in the lung extracellular matrix. The aim of the present study was to explore the relationship between levels of EP and forced expiratory volume in one second (FEV1) and single breath transfer factor for carbon monoxide (TLCO and KCO) in coal miners. METHODS The study population comprised 227 working coal miners aged 34-50 years consisting of 75 miners heavily exposed to underground coal dust with pulmonary radiographs classified as 0/1 or 1/0 by the International Labour Office classification, 75 exposed miners with radiographs classified as normal (0/0), and 77 miners slightly exposed to coal dust with normal radiographs. The subjects answered a standardised questionnaire and performed spirometric tests and a carbon monoxide (CO) transfer test. RESULTS No association was observed between EP levels and % predicted FEV1 (or FEV1/FVC). The level of EP increased significantly with decreased % predicted TLCO (r = -0.20). Miners in the lowest % predicted KCO quintile had higher EP levels than the rest (3.28 (1.37) vs 2.47 (1.16)). A significantly lower EP level was observed in miners with radiographs classified as 1/0 or 0/1, especially in those with round opacities, compared with miners with a normal radiograph, and in current smokers compared with the rest. CONCLUSIONS The results of this study suggest that the level of EP may reflect some remodelling activity in emphysema and lung fibrosis.
منابع مشابه
Dust exposure, respiratory symptoms, and longitudinal decline of lung function in young coal miners.
OBJECTIVES To study the role of dust exposure on incidence of respiratory symptoms and decline of lung function in young coal miners. METHODS The loss of lung function (forced vital capacity (FVC), forced expiratory volume in one second (FEV1), forced expiratory flow (MEF), carbon monoxide transfer factor (TLCO)) with time and the incidence of respiratory symptoms in 909 Sardinian coal miners...
متن کاملDust exposure , respiratory symptoms , and longitudinal decline of lung function in young coal
Accepted 12 December 1995 Abstract Objectives-To study the role of dust exposure on incidence of respiratory symptoms and decline of lung function in young coal miners. Methods-The loss of lung function (forced vital capacity (FVC), forced expiratory volume in one second (FEV,), forced expiratory flow (MEF), carbon monoxide transfer factor (TLCO)) with time and the incidence of respiratory symp...
متن کاملSingle breath transfer factor measured concurrently by two methods in asthmatic and normal subjects.
Haydu, S. P. (1974). Thorax, 29,232-236. Single breath transfer factor measured concurrently by two methods in asthmatic and normal subjects. There have been conflicting reports that the single breath transfer factor for carbon monoxide in asthma may be normal, high or low. To resolve this point the single breath transfer factor was measured in comparable groups of asthmatic and normal subjects...
متن کاملThe single-breath transfer factor for carbon monoxide and respiratory symptoms in a Norwegian community sample.
Reduced single-breath transfer factors of the lung for carbon monoxide are seen in a number of conditions. The hypothesis of the present study was that self-reported respiratory symptoms differ in their prediction of TL,CO level in a general population in Norway. A cross-sectional survey of a general population sample in Norway, made up of 1,275 subjects aged 18-73 yrs, was conducted in 1987-19...
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ورودعنوان ژورنال:
- Thorax
دوره 52 12 شماره
صفحات -
تاریخ انتشار 1997