Publication Date:
1979-12-14
Description:
Current concepts of the pathogenesis of emphysema suggest that it results from an imbalance of elastase and antielastase activity within the alveolar structures. Although emphysema that is associated with hereditary deficiency of serum alpha 1-antitrypsin conforms to this scheme, the major risk factor in the more common form of emphysema is cigarette smoking. A study was designed to evaluate the premise that cigarette smoking may be associated with an acquired, functional defect in lung alpha 1-antitrypsin. Determination of the antielastase activity of alpha 1-antitrypsin obtained from the lungs of smoking and nonsmoking individuals revealed a nearly twofold reduction in the functional activity of this elastase inhibitor in the lungs of cigarette smokers. These data suggest that cigarette smokers may lose some of the normal antielastase protective screen of the lower respiratory tract, making them more vulnerable to destructive lung disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gadek, J E -- Fells, G A -- Crystal, R G -- New York, N.Y. -- Science. 1979 Dec 14;206(4424):1315-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/316188" target="_blank"〉PubMed〈/a〉
Keywords:
Adult
;
Bronchi/enzymology
;
Extracellular Space/enzymology
;
Humans
;
Lung/*enzymology
;
Pancreatic Elastase/antagonists & inhibitors
;
Plants, Toxic
;
Pulmonary Emphysema/enzymology/etiology
;
Smoking/complications/*physiopathology
;
Tobacco
;
*alpha 1-Antitrypsin Deficiency
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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