Abstract
The contribution of mast cell subtypes and their different mediators to the pathogenesis of chronic obstructive lung diseases (COLD) has not yet been established. In the present study, enzymatic digestion, centrifugal elutriation and Percoll gradient centrifugation were used to obtain two populations of mast cell subtypes from human lung tissue. Mast cell subtypes were challenged with anti-human IgE, propranolol, compound 48/80, or opsonized zymosan. Both subtypes were able to release histamine, but differed in the amount of the amine released. Only the formalin-sensitive and alcian blue-positive type (FS-AB) released histamine on challenge with opsonized zymosan. The same subtype was able to release leukotriene C4 (LTC4) after challenge with anti-human IgE. The other subtype, the formalin-insensitive and alcian blue-positive type (FI-AB), did not respond to opsonized zymosan and did not release LTC4 after challenge with anti-human IgE. Stimulation with propranolol or compound 48/80 did not release histamine from the FS-AB mast cells while the FI-AB mast cells released only about 10% of their histamine content upon challenge with these secretagogues.
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van Overveld, F.J., Houben, L.A.M.J., Bruijnzeel, P.L.B. et al. Mast cell subtypes from human lung tissue: Their identification, separation, and functional characteristics. Agents and Actions 23, 227–229 (1988). https://doi.org/10.1007/BF02142548
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DOI: https://doi.org/10.1007/BF02142548