alexa Are Basophils and T helper 2 Cells Implicated in Mastocytosis?
ISSN: 2155-6121

Journal of Allergy & Therapy
Open Access

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Research Article

Are Basophils and T helper 2 Cells Implicated in Mastocytosis?

Ana Spínola1, Joana Guimarães1, Marlene Santos1,4, Catarina Lau1,4, Maria dos Anjos Teixeira1,4, Rosário Alves2,3,4 and Margarida Lima1,3,4*

1Laboratory of Cytometry, Department of Hematology, Hospital de Santo António (HSA), Centro Hospitalar do Porto (CHP), Porto, Portugal

2Department of Dermatology, Hospital de Santo António (HSA), Centro Hospitalar do Porto (CHP), Porto, Portugal

3Mutidisciplinar Consultation for Cutaneous Lymphomas and Mastocytosis, Hospital de Santo António (HSA), Centro Hospitalar do Porto (CHP), Porto, Portugal

4Unit for Multidisciplinary Investigation in Biomedicine (UMIB), Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto (UP), Porto, Portugal

*Corresponding Author:
Margarida Lima
Laboratory of Cytometry, Department of Hematology
Hospital de Santo António, Centro Hospitalar do Porto Rua
D. Manuel II, s/n, 4099-001 Porto, Portugal
Tel: 351226004808
E-mail:[email protected]

Received date: August 14, 2014; Accepted date: September 22, 2014; Published date: September 29, 2014

Citation: Spínola A, Guimarães J, Santos M, Lau C, Teixeira MA, et al. (2014) Are Basophils and T helper 2 Cells Implicated in Mastocytosis? J Allergy Ther 5:192. doi: 10.4172/2155-6121.1000192

Copyright: © 2014 Spínola A, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

Background: Clinical signs and symptoms observed in patients with mastocytosis are not only related to organ infiltration, but also result of either local or systemic mast cells mediator release. Knowing that mast cells, basophils and T helper 2 (Th2) cells have been implicated in allergy, we hypothesized that basophils and Th2 cells could also be involved in the episodes of mediator release often seen in patients with mastocytosis and, in a small proportion, could be on the bloodstream in an activated mode and/or be over-reactive to stimuli.

Methods: We aimed to quantify and characterize, by flow cytometry, the basophil (CD45+dim, CD123+bright, CD294/CRTH2+, CD3- and HLA-DR-), Th2 (CD3+, CD294/CRTH2+) and activated (CD3+, HLA-DR+) T cell populations in the peripheral blood from 19 patients with mastocytosis, as well as the ability of peripheral blood basophils to be activated, thereby expressing CD63 and down-regulating CD193/CCR3 expression on the cell surface, in response to different stimuli (fMLP and anti-FcƨRI), as compared with 19 normal individuals.

Results: We found no evidence for increased basophil, Th2 and activated T cell counts, neither for over-reactive basophils in response to fMLP and anti-FcƨRI, in mastocytosis patients, as compared with normal individuals.

Conclusions: Using the present methodology, our results argue against a possible role of basophils and Th2 cells in the episodes of mediator release observed in patients with mastocytosis.

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