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Effect of ketotifen on the distribution and degranulation of uterine eosinophils in estrogen-treated rats

  • Allery, Histamine and Kinins
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Abstract

Eosinophil leukocytes migrate from the blood to the uterus under estrogen stimulation, redistribute through uterine extravascular compartment, degranulate in the organ, and release agents that are involved in several parameters of estrogen action. Agents that induce blood eosinopenia, block their migration to the uterus, interfere with their redistribution within the organ or modify their degranulation, selectively interfere with eosinophil-mediated responses to estrogen. The present study investigated whether ketotifen, an antiallergic agent that inhibits allergen-induced eosinophil degranulation, interferes with estrogen-induced eosinophil migration to the uterus and their subsequent degranulation. Ketotifen does not interfere with estrogen-induced eosinophil accumulation in the uterus, but decreases the proportion of eosinophils located in endometrium and inhibitis their degranulation. These results suggest that neither histamine, calcium or slow reacting substance of anaphilaxis are involved in eosinophil migration to the uterus. The inhibition by ketotifen of eosinophil degranulation may diminish eosinophil migration through extravascular compartment via a decrease in the release from degranulating eosinophils of enzymes required for this migration. It is possible that the inhibition by ketotifen of both, eosinophil degranulation and eosinophil motility through uterine extravascular compartment, interfere with eosinophil-mediated responses to estrogen or with other functions of these cells.

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Authors and Affiliations

  1. Department of Experimental Medicine, University of Chile Medical School, Casilla 21104, Correo 21, Santiago, Chile

    J. Soto, P. Poloni, G. Voigt, B. Caro & M. Agurto

  2. Laboratory of Experimental Endocrinology of the Department of Experimental Morphology, University of Chile Medical School, Casilla 21104, Correo 21, Santiago, Chile

    A. N. Tchernitchin

Authors
  1. J. Soto
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  2. A. N. Tchernitchin
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  3. P. Poloni
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  4. G. Voigt
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  5. B. Caro
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  6. M. Agurto
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Soto, J., Tchernitchin, A.N., Poloni, P. et al. Effect of ketotifen on the distribution and degranulation of uterine eosinophils in estrogen-treated rats. Agents and Actions 28, 198–203 (1989). https://doi.org/10.1007/BF01967401

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  • DOI: https://doi.org/10.1007/BF01967401

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