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Histamine release from skin mast cells and basophils in patients with urticaria pigmentosa



Histamine release from skin mast cells and basophils in patients with urticaria pigmentosa



Acta Dermato-Venereologica 70(2): 154-156



Histamine release from dispersed skin mast cells may be used for functional studies on the mast cell. However, technical difficulties have hampered such studies. In the present study a new fiberglass-based histamine assay was applied to previously described dispersion techniques, using excision biopsies from 7 patients with urticaria pigmentosa, 3 with psoriasis as well as 4 with urticaria. However, sufficient mast cell numbers for performing histamine release could only be obtained from patients with urticaria pigmentosa. The average mast cell yield was 935 +/- 470 cells (mean +/- SD) per mg wet weight of tissue. The skin mast cells from these patients responded with dose-dependent histamine release to anti-IgE, calcium ionophore A23187, and N-formyl-methionyl-leucyl-phenylalanine challenge without previous passive sensitization. The pattern of histamine release of mast cells and corresponding blood basophils did not indicate substantial differences between the two cell types.

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Accession: 007401678

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PMID: 1690493


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