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Abstract
There is evidence that eosinophils are involved in inflammation in asthma, a correlation having been observed between blood eosinophil (B-EOS) count and pulmonary function. It has been suggested that eosinophils, and its product, eosinophil cationic protein (ECP), can serve as markers of disease activity. This paper examines this hypothesis. B-EOS count, serum ECP level, and peak expiratory flow (PEF) were estimated in two groups of asthmatics and controls at three visits in 4 weeks. The mean B-EOS count in acute and stable asthmatic groups was higher than in controls at presentation; the difference was statistically significant (p < 0.02). Similarly, mean ECP was higher in the two groups than in controls, but with no statistically significant difference. The B-EOS count and serum ECP level within the groups fell between week 0 and week 4 because of treatment. There was positive correlation between ECP and PEF and also between B-EOS and ECP and PEF. The findings reveal that blood eosinophils reflect some degree of activity in asthmatic patients in the acute and chronic state.
Published Version
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