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Abstract
The mean serum antitrypsin (AT) activity for 1,829 patients hospitalized with medical problems exceeded the mean for a group of blood bank donors by 51%. Analysis of data from individual patients in terms of the general category (there were 16) of their disease and smoking status (smoker, nonsmoker, former smoker) indicated significant differences due to disease status and smoking status. The highest mean AT levels were associated with infectious, respiratory, and neoplastic diseases. Smokers had significantly higher mean levels than nonsmokers, and lung cancer patients had significantly higher mean levels than those with other malignant neoplasms.
Among smokers (as a group) mean AT levels, though elevated relative to non- smokers were not significantly related to duration or intensity of smoking; but former smokers showed a decline (with time following cessation of smoking) in their mean AT level to the mean level for non-smokers. These findings provide further evidence of the sensitivity of serum antitrypsin activity to environmental influences.
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