Browsing by Author "Alpaydin A.Ö."

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    Relationship of systemic antiinflammatory markers and functional parameters in chronic obstructive pulmonary disease; [Kronik obstrüktif akciǧer hastalıǧında fonksiyonel paramatrelerle sistemik antiinflamatuar belirteçlerin ilişkisi]
    (AVES, 2011) Satar S.; Alpaydin A.Ö.; Var A.; Coşkun A.Ş.; Çelik P.; Yorgancioǧlu A.
    Objective: Airway inflammation and oxidative stress biomarkers increase in chronic obstructive pulmonary disease (COPD) and this is thought to be related to faster decrease in lung functions. Systemic markers of oxidative stress include nitric oxide (NO) and malonyl dialdehyde (MDA), while antioxidant markers are erythrocyte superoxide dismutase (SOD) and gluthathionperoxidase (GSH-Px). We investigated the relationship between levels of systemic oxidative/antioxidant markers and functional parameters. Material and Method: Fifty-one COPD patients without any systemic inflammation were included in the study. Pulmonary function test parameters were evaluated. 6-minute walk test (6MWT) and dyspnea severity were recorded. Twelve healthy persons in a control group were also included in the study. Venous blood specimens of the patients and the control group were collected and serum NO, MDA and erythrocyte SOD, GSHPx levels were measured. Results: Mean age of the patients were 62.94±10.56 years. When the control group and COPD patients were compared; MDA (p<0.001), NO (p=0.012) and GSH-Px (p=0.012) were significantly higher in the control group than COPD patients. However, when the age factor was controlled, only MDA(p=0.017) was found higher in the control group. As forced expiratory volume in 1st second (FEV1) decreased; NO, SOD, MDA and GSH-Px increased, although there was no statistical significance. Like FEV1, 6MWT and dyspnea severity by VAS did not show any statistical significance with the parameters investigated. Conclusion: From the results, we could not observe the reflections of oxidant/antioxidant imbalance on functional parameters in COPD. This may be due to incomplete systemic response to local disorders as well as the attempts of antioxidant systems to maintain an equilibrium resembling that in healthy individuals.
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    Toll-like receptor 2 expression and peripheral blood CD4+/CD8+ T cell ratio in COPD
    (AVES Ibrahim Kara, 2014) Ulutaş G.Ş.; Alpaydin A.Ö.; Taneli F.; Çetinkaya C.; Ulman C.; Güvenç Y.; Horasan G.D.; Coşkun A.Ş.
    OBJECTIVES: We aimed to evaluate toll-like receptor 2 (TLR-2) expression on monocytes and peripheral blood CD4+/CD8+ T cell ratio, as well as the relationship of these cells with pulmonary functions in chronic obstructive pulmonary disease (COPD) patients. MATERIAL AND METHODS: Forty COPD patients and 40 healthy volunteers were included. Participants were analysed in four groups according to their smoking status. Peripheral blood CD4+ and CD8+ T cells and monocyte TLR-2 expression were measured by flow cytometry in the whole study population. RESULTS: No significant difference was observed in TLR-2 expression, number of CD4+ and CD8+ T cells, and CD4+/CD8+ T cell ratio between the study groups. CD4+/CD8+ T cell ratio and FEV1/FVC were found to have a mild positive correlation (r=0.295, p=0.022). A mild negative correlation was observed between smoking intensity and CD4+/CD8+ T cell ratio (r=-0.274, p=0.034). CONCLUSION: We demonstrated a mild correlation between pulmonary functions and peripheral blood CD4+/CD8+ T cell ratio. However, we did not find a significant difference in TLR-2 expression of CD14+ monocytes in patients with airway obstruction. © 2014 by Turkish Thoracic Society.