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Abstract
Metachromatic cells are increased in the airways of asthmatic patients. We obtained metachromatic cells from asthmatic airways using an induced sputum technique. The histamine release following ConA, anti-IgE and anti-IgE + IL 3 from those cells were evaluated before and following the addition of cromoline Na and nedocromil Na. Metachromatic cells had a higher rate of spontaneous histamine release when compared to peripheral basophils. Cromoline Na and nedocromil Na inhibited histamine release from triggered metachromatic cells but not from peripheral basophils. It is concluded that airway metachromatic cells from asthmatics behave differently than peripheral basophils.
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