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. 1990 Apr;30(1-2):102-5.
doi: 10.1007/BF01969010.

The sensitivity to Zn2+ discriminates between typical and atypical mast cells

M Mousli  1 , J P Gies, C Bertrand, F Pelen, C Bronner, Y Landry
Affiliations

The sensitivity to Zn2+ discriminates between typical and atypical mast cells

M Mousli et al. Agents Actions. 1990 Apr.

Abstract

The effects of zinc gluconate have been studied on rat peritoneal mast cells and rat basophilic leukemia cells (RBL 2H3) stimulated by various secretagogues. The IC50's of zinc gluconate on peritoneal cells were (microM): 1.6, 1.9, 5.4 and 18 for ionophore A23187, phorbol 12-myristate 13-acetate, substance P and immunoglobulin E-antigen, respectively. Higher concentrations of zinc gluconate were required to inhibit histamine secretion from RBL 2H3 cells, i.e. 12 microM (ionophore A23187) and 140 microM (immunoglobulin E-antigen). Zinc gluconate (10(-4) to 10(-3) M) also inhibited the IgE-dependent contraction of guinea pig trachea but was unable to affect that induced by exogenous histamine. These results suggest that zinc gluconate acts intracellularly and is selective of "typical" or "connective tissue" mast cells.

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