High levels of CXC Ligand 12/stromal cell-derived factor 1 in apical lesions of endodontic origin associated with mast cell infiltration
Author
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Cavalla, Franco
Author
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Reyes, Montserrat
Author
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Vernal Astudillo, Rolando
Author
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Álvarez, Carla
Author
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Paredes, Rodolfo
Author
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García Sesnich, Jocelyn
Author
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Infante, Magdalena
Author
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Fariña, Valeska
Author
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Barrón, Ignacio
Author
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Hernández, Marcela
Admission date
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2018-12-20T15:24:46Z
Available date
dc.date.available
2018-12-20T15:24:46Z
Publication date
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2013
Cita de ítem
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Journal of Endodontics, Volumen 39, Issue 10, 2013, Pages 1234-1239.
Identifier
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00992399
Identifier
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10.1016/j.joen.2013.06.020
Identifier
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https://repositorio.uchile.cl/handle/2250/159090
Abstract
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INTRODUCTION:
CXC ligand 12/stromal-derived factor-1 (CXCL12/SDF-1) is a pleiotropic chemokine that regulates the influx of a wide range of leukocytes. The aim of this study was to characterize CXCL12/SDF-1 in apical lesions (ALs) of endodontic origin, with special emphasis in associated immune cell populations.
METHODS:
In this case-control study, 29 individuals with chronic apical periodontitis and 21 healthy volunteers were enrolled. ALs and healthy periodontal ligament samples were obtained for tissue homogenization, immune Western blotting, and enzyme-linked immunosorbent assay to determine CXCL12/SDF-1 forms and levels. Anatomopathologic diagnosis, immunostaining for CXCL12/SDF-1, CD117-CXCL12/SDF-1, and toluidine blue were also performed to identify tissue and cell localization. Finally, a set of tissue samples were digested and analyzed by flow cytometry to identify CXCL12/SDF-1 in different immune cell populations. Data were analyzed with Stata v11 and WinDi 2.9 software, and significance was considered if P < .05.
RESULTS:
CXCL12/SDF-1 was predominantly identified as monomers; levels of CXCL12/SDF-1 were significantly higher in ALs compared with controls, and it was primarily localized to inflammatory infiltrates. Expression of CXCL12/SDF-1 was colocalized to mast cells in tissue sections. Furthermore, CD117(+) mast cells were the second most frequent infiltrating cells and the main CXCL12/SDF-1 expressing cells, followed by CD4(+) lymphocytes, monocytes/macrophages, neutrophils, and dendritic cells.
CONCLUSIONS:
ALs of endodontic origin demonstrated higher levels of CXCL12/SDF-1 compared with controls. CXCL12/SDF-1 was identified in immune cell populations, whereas mast cells represented the major CXCL12/SDF-1 expressing cells, suggesting that this chemokine might play a central role in apical tissue destruction, most probably inducing persistent recruitment of immune cells, particularly of mast cells.