HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Citation Map Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Request Permissions Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Klein, A. Articles by Teixeira, M. M. Search for Related Content PubMed PubMed Citation Articles by Klein, A. Articles by Teixeira, M. M. Pubmed/NCBI databases Compound via MeSH Substance via MeSH Medline Plus Health Information Pleural Disorders

Stem Cell Factor Plays a Major Role in the Recruitment of Eosinophils in Allergic Pleurisy in Mice Via the Production of Leukotriene B₄¹

Andre Klein^*, Andre Talvani^*, Denise C. Cara, Kenia L. Gomes^*, Nicholas W. Lukacs and Mauro M. Teixeira^2,*

^* Immunopharmacology Laboratory, Departamento de Farmacologia and Departmento de Patologia, Instituto de Ciencias Biologicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil; and Department of Pathology, University of Michigan, Ann Arbor, MI 48109

The understanding of the mechanisms underlying eosinophil migration into tissue is an essential step in the development of novel therapies aimed at treating allergic diseases where eosinophil recruitment and activation are thought to play an essential role. In this study, we have examined the effects of the in vivo administration of stem cell factor (SCF) on eosinophil recruitment and tested whether endogenous SCF was involved in mediating eosinophil recruitment in response to Ag challenge in sensitized mice. The intrapleural injection of SCF induced a time- and concentration-dependent recruitment of eosinophils in mice. In allergic mice, SCF message was expressed early after Ag challenge and returned to baseline levels after 8 h. In agreement with the ability of SCF to induce eosinophil recruitment and its expression in the allergic reaction, an anti-SCF polyclonal Ab abrogated eosinophil recruitment when given before Ag challenge. SCF increased the levels of leukotriene B₄ (LTB₄) in the pleural cavity of mice and an LTB₄ receptor antagonist, CP105,696, abrogated the effects of SCF on eosinophil recruitment. Similarly, recruitment of eosinophils in the allergic reaction was virtually abolished by CP105,696. Together, our data favor the hypothesis that the local release of SCF following Ag challenge may activate and/or prime mast cells for IgE-mediated release of inflammatory mediators, especially LTB₄. The mediators released in turn drive the recruitment of eosinophils. Inhibition of the function of SCF in vivo may reduce the migration of eosinophils to sites of allergic inflammation and may, thus, be a relevant principle in the treatment of allergic diseases.

This article has been cited by other articles:

				V. Pinho, R. de Castro Russo, F. A. Amaral, L. P. de Sousa, M. M. Barsante, D. G. de Souza, J. C. Alves-Filho, D. C. Cara, J. S. Hayflick, C. Rommel, et al. Tissue- and Stimulus-Dependent Role of Phosphatidylinositol 3-Kinase Isoforms for Neutrophil Recruitment Induced by Chemoattractants In Vivo J. Immunol., December 1, 2007; 179(11): 7891 - 7898. [Abstract] [Full Text] [PDF]

				C. Bonnans, K. Fukunaga, R. Keledjian, N. A. Petasis, and B. D. Levy Regulation of phosphatidylinositol 3-kinase by polyisoprenyl phosphates in neutrophil-mediated tissue injury J. Exp. Med., April 17, 2006; 203(4): 857 - 863. [Abstract] [Full Text] [PDF]

				V. Pinho, D. G. Souza, M. M. Barsante, F. P. Hamer, M. S. De Freitas, A. G. Rossi, and M. M. Teixeira Phosphoinositide-3 kinases critically regulate the recruitment and survival of eosinophils in vivo: importance for the resolution of allergic inflammation J. Leukoc. Biol., May 1, 2005; 77(5): 800 - 810. [Abstract] [Full Text] [PDF]

				V. Pinho, S. H. Oliveira, D. G. Souza, D. Vasconcelos, A. L. Alessandri, N. W. Lukacs, and M. M. Teixeira The role of CCL22 (MDC) for the recruitment of eosinophils during allergic pleurisy in mice J. Leukoc. Biol., March 1, 2003; 73(3): 356 - 362. [Abstract] [Full Text] [PDF]

				K. H. Mohamed, A. I. Abdelhamid, Y. C. G. Lee, K. B. Lane, B. Conner, M. Hawthorne, and R. W. Light Pleural Fluid Levels of Interleukin-5 and Eosinophils Are Closely Correlated* Chest, August 1, 2002; 122(2): 576 - 580. [Abstract] [Full Text] [PDF]

				A. Klein, A. Talvani, P. M. R. Silva, M. A. Martins, T. N. C. Wells, A. Proudfoot, N. W. Luckacs, and M. M. Teixeira Stem Cell Factor-Induced Leukotriene B4 Production Cooperates with Eotaxin to Mediate the Recruitment of Eosinophils During Allergic Pleurisy in Mice J. Immunol., July 1, 2001; 167(1): 524 - 531. [Abstract] [Full Text] [PDF]

				S. H. P. Oliveira, C. M. Hogaboam, A. Berlin, and N. W. Lukacs SCF-induced airway hyperreactivity is dependent on leukotriene production Am J Physiol Lung Cell Mol Physiol, June 1, 2001; 280(6): L1242 - L1249. [Abstract] [Full Text] [PDF]