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Influence of gingival crevicular washing on the expression of polymorphonuclear leukocyte membrane receptors before and after periodontal therapy
Author(s) -
Murro Carlo,
Fattorossi Andrea,
Paolantonio Michele,
Pedrazzoli Vinicio,
Sergi Giovanni,
Casciaro Anna,
D'Amelio Raffaele,
Cattabriga Marcello
Publication year - 1995
Publication title -
journal of clinical periodontology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.456
H-Index - 151
eISSN - 1600-051X
pISSN - 0303-6979
DOI - 10.1111/j.1600-051x.1995.tb00807.x
Subject(s) - periodontitis , chemotaxis , n formylmethionine leucyl phenylalanine , receptor , flow cytometry , phagocytosis , chemistry , granulocyte , gingival and periodontal pocket , motility , dentistry , immunology , medicine , biology , biochemistry , microbiology and biotechnology
. Extensive data demonstrate that polymorphonuclear leukocytes (PMN) are the predominant cell type involved in periodontal disease and that gingival crevicular fluid constituents are influenced by the inflamed gingiva. The aim of the present study was to evaluate the ability of gingival crevicular washing (GCW) (a dilution of gingival crevicular fluid) from periodontal sites in different clinical conditions of modulating the PMN membrane receptors involved in motility, adhesion and phagocytosis before and after periodontal treatment. 10 patients affected by adult periodontitis (AP) were selected. From each patient. 2 test sites (TS) were chosen on the basis of a probing depth > 5 mm and attachment loss, and 2 control sites (CS) with probing depth < 3 mm without attachment loss. Modifications of membrane receptor density of PMN from healthy donors incubated with GCW harvested from TS and CS was evaluated using fluorescent probes and flow cytometry. Compared to CS‐GCW. TS‐GCW before therapy increased the expression of the β2 integrin CD 11b and the chemotactic receptor for the oligopeptide N‐formyl methionyl leucyl phenylalanine (FMLP‐R) while it reduced the expression of L‐selection. GCW collected from the same TS after the successful completion of periodontal treatment did not influence PMN receptors, indicating that the clinical improvement paralleled the disappearance of the PMN modulating capability contained in TS‐GCW before therapy. In conclusion, the present data illustrate the relevant modifications occurring at PMN membrane in chronic adult periodontitis exerted by GCW obtained by a simple fluid collection technique. Thus, monitoring gingival crevicular fluid PMN activating capability may help disclose the presence of chronic periodontitis and may be useful in assessing successful treatment.