Total Serum IgE Levels in Normals and Patients with Chronic Non–Specific Lung Diseases

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Abstract
Total serum Ig[immunoglobulin]E was measured, using a sensitive sandwich method, in a healthy control population, in healthy persons with a familial history of chronic non-specific lung disease and in patients with chronic non-specific lung disease (CNSLD). In the control population a median total serum IgE of 39 IU/ml was found. Total serum IgE levels were significantly lower in women that in men. Healthy persons with a familial history of CNSLD had significantly increased total IgE levels compared with the control population. The IgE level was even higher in the group of patients with CNSLD. The presence of specific IgE antibodies and/or an early onset of the symptoms of CNSLD was accompanied by higher total serum IgE levels compared iwth the IgE values in the other CNSLD patients. The total IgE levels were increased in all subgroups of CNSLD patients. A significant decrease of the IgE level with age was observed in CNSLD patients.