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1

Expressions of selected adhesion molecules on peripheral blood leukocytes in patients with aggressive periodontitis

100%
Pietruska M., Zak J., Pietruski J., Wysocka J.
Archivum Immunologiae et Therapiae Experimentalis
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2005
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vol. 53
|
issue 3
266-271
EN
Aggressive forms of periodontitis lead to rapid bone destruction resulting in extensive losses in children's and young adults' dentition. Adhesion molecule deficiency syndrome and abnormalities in the expression of various adhesion molecules on peripheral blood leukocytes can be observed in prepubertal and aggressive periodontitis (AP) patients. The aim of the study was thus to assess the expression of selected cell adhesion molecules (CAMs; CD11a, CD11b, CD11c, CD54, and CD62L) on monocytes, neutrophils, and lymphocytes of the peripheral blood in patients with AP. The study involved 16 patients with AP and a control group of 13 generally healthy subjects with healthy periodontium. CAM expressions were determined by flow cytometry and presented as mean fluorescence intensity (MIF) and percentage of cells showing expression of the assessed adhesion molecules. Neutrophil CAM expressions in AP patients were comparable with those of the control group. MIF of CD62L on monocytes in AP patients was significantly lower than that of the controls. Lymphocytes showed increased CD11b expression compared with the control group. The percentage of leukocytes showing CAM expression in both groups was similar. Only the percentage of lymphocytes with CD11b in AP patients was significantly higher than in healthy controls. Because of the evident lack of differences between patients and controls and the great amount of individual dispersion of the results, the above CAMs on peripheral blood leukocytes in generally healthy patients with AP do not seem to be characteristic markers of this disease.
2

Evaluation of selected peripheral blood leukocyte functions in patients with various forms of periodontal disease

76%
Pietruska M., Zak J., Wysocka J., Jaworowska B., Zelazowska B., Lipska A., Stokowska W.
Archivum Immunologiae et Therapiae Experimentalis
|
2004
|
vol. 52
|
issue 3
208-212
EN
Periodontitis (P) is an infectious disease that develops in the supporting tissues of the tooth. One of the risk factors leading to it may be dysfunction of some immune system cells. Therefore, the object of the study was to assess selected functions of peripheral blood leukocytes in patients with various forms of P. As leukocytes are able to secrete interleukin (IL)-4 and IL-6, concentrations of their soluble receptors and the expression of their membrane receptors were investigated. Twenty generally healthy subjects with agressive (AP) and chronic periodontitis (CP) were enrolled in the study. The control group consisted of 8 healthy subjects, with no changes in periodontium. Peripheral blood mononuclear cells (PBMCs) were isolated and cultured. Levels of IL-4, IL-6, and their soluble receptors sIL-4R and sIL-6R were determined in the supernatant by ELISA. The expressions of cell surface IL-4R and IL-6R were assayed on PBMC using flow cytometry. No statistically significant differences were found in the selected parameters between people with periodontal disease and healthy controls. However, in subjects with AP, there was an increasing tendency in IL-6 concentration and IL-4R expression on PBMCs. Our results show that leukocytes play a significant part in P and their activity is probably lesion-dependent. Estimation of the cytokines secreted by leukocytes may facilitate differentiation and prognosis of the disease progression.
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