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Öğe Assessment of serum ischemia-modified albumin, prolidase and thiol-disulphide levels in subjects with breast cancer.(UNIV PRESS, 2019) Abuşoğlu, Sedat; Eryavuz, Duygu; Bal, Ceylan; Nural, Cemil; Özcan, Erel; Yıldırımel, Mehmet; Çelik, Saadet; Ünlü, AliBackground: Oxidative damage is of great importance for patients with breast cancer. Thus, studies were performed to identify the relationship between breast cancer and oxidative stress biomarkers. Objectives: In this study, our aim was to find out the oxidative and antioxidant status, serum thiol-disulphide levels in subjects with breast cancer. Methods: This study was conducted between March and June 2018 with 82 control subjects (aged between 3267 years) and 127 breast cancer patients (aged between 27-66 years) (p= 0.058) in Selcuk University Faculty of Medicine, Konya, Turkey. Serum myeloperoxidase (MPO), catalase, prolidase were analyzed with kinetic spectrophotometric and thiol-disulphide, ischemia-modified albumin (IMA), ceruloplasmin were detected by colorimetric methods. Results: Serum levels of catalase [199.3 (16.4-489.9) vs 81.6 (18.2-322.9) (kU/L)], MPO [124 +/- 28 vs 101 +/- 31 U/L], disulphide [25 (11-61) vs 18 (2-41) mu mol/L], IMA [0.66 (0.31-3.30) vs 0.62 (0.19-1.31) absorbance unit (ABSU)] and prolidase levels [2217 +/- 538 vs 1456 +/- 401 U/L] were higher in patients than control subjects (For all p< 0.001 except for IMA p=0.031). Native thiol [342 +/- 60 vs 391 +/- 52 mu mol/L] and total thiol levels [396 +/- 56 vs 430 +/- 52 mu mol/L] were lower in patients compared with the control group (For all p< 0.001). Conclusions: Levels of serum thiol/disulphide and prolidase might be reliable indicators for determining oxidative status in certain patient populations.Öğe Association of depressive symptoms with 25(OH) vitamin D in hemodialysis patients and effect of gender(SPRINGER, 2020) Yavuz, Yasemin Coşkun; Bıyık, Zeynep; Özkul, Durmuş; Abuşoğlu, Sedat; Eryavuz, Duygu; Dağ, Mikail; Körez, Muslu Kazım; Güney, İbrahim; Altıntepe, LütfullahBackground Depression is common in chronic kidney disease ( CKD) patients and associated with significant increase in morbidity and mortality. In recent years, a relationship between vitamin D deficiency and depression has been shown. The aim of this study is to investigate the relationship between 25-hydroxy (OH) vitamin D and depression in hemodialysis patients. Methods A total of 140 patients were included in the study. Hamilton depression scale (HAM-D) was completed by all patients. 25(OH) vitamin D levels were compared between patients with and without depressive symptoms. Results Patients who had depressive symptoms had significantly lower 25(OH) vitamin D levels (13.70 [24.3-8.25] vs. 18.20 [29.2-11.7] ng/mL, p = 0.016). HAM-D score showed significant association with gender (p = 0.011) and 25(OH) vitamin D level (p = 0.011). Univariate logistic regression analysis showed that males had lower risk of depression by a ratio of 61.1% (OR 0.389, p = 0.012) and vitamin D-deficient patients had 2.88 times greater risk of depression compared to non-deficient patients (OR 2.885, p = 0.013). Multivariate logistic regression analysis showed that males had 53.7% less risk of depression (OR 0.463, p = 0.046) and vitamin D-deficient patients had 2.39 times greater risk of depression (OR 2.397, p = 0.047). When evaluated by gender, univariate logistic regression analysis showed that 25(OH) vitamin D and other variables were not associated with depression in females (p > 0.05), while only vitamin D level had a significant effect on depression in males (OR 8.207, p = 0.008). Conclusions We found a significant association between vitamin D level and depressive symptoms in hemodialysis patients. When analyzed according to gender, this association was found to stand independent of other variables only in males.Öğe Serum vitamin D levels in patients with chronic obstructive pulmonary disease(WILEY, 2017) Ünlü, Ali; Abuşoğlu, Sedat; Sivrikaya, A.; Eryavuz, Duygu[Abstract not Available]Öğe Total methylated arginine load as a risk parameter in subjects with masked hypertension(TAYLOR & FRANCIS INC, 2020) Hoşaf, Müşerref; Abuşoğlu, Sedat; Avcı, Ahmet; Demir, Kenan; Ünlü, Ali; Eryavuz, Duygu; Abuşoğlu, GülsümAsymmetric dimethylarginine, symmetric dimethylarginine, and L-monomethylarginine are originated from the subsequent proteolytic catalysis of methylated arginine residues on different proteins and inhibit the endogenous nitric oxide generation. The changes in total methylarginine load (Asymmetric dimethylarginine plus symmetric dimethylarginine plus L-monomethylarginine) may contribute to hypertension. The aim of this study was to determine serum methylarginine concentrations in patients with masked hypertension and determine the association between these biomarkers and blood pressure measurements. Control group, masked hypertension and hypertension groups consisted of 40 subjects (11 males, 28 females, mean age 48.6 +/- 13.1), 28 subjects (14 males, 14 females, mean age 50.9 +/- 11.0) and 36 subjects (15 males, 21 females, mean age 54.4 +/- 12.3 years), respectively (P= 0.149). Serum total methylarginine load was significantly higher in hypertension group (0.63 +/- 0.23) compared to masked hypertension (0.49 +/- 0.16) and control groups (0.38 +/- 0.13) (P= 0.008 and P< 0.001). While there was no statistically significant difference between healthy control groups [0.147 (0.03-0.29)] and masked hypertension patients [0.144 (0.05-0.42)] for serum symmetric dimethylarginine levels (P= 0.970), it was markedly elevated in hypertension group [0.25 (0.07-0.54)] compared to masked hypertension group [0.14 (0.05-0.42)] (P= 0.001). Serum total methylarginine load was positively correlated with night-time SBP (r = 0.214, P= 0.029). Serum methylarginine levels might be a useful marker for determining the courses of clinical hypertension.
