Dicle University

About: Dicle University is a education organization based out in Diyarbakır, Turkey. It is known for research contribution in the topics: Population & Catalysis. The organization has 3007 authors who have published 6368 publications receiving 94797 citations. The organization is also known as: Dicle Üniversitesi & Zanîngeha Dîcleyê.

Evaluation of New Biomarkers in the Prediction of Malignant Mesothelioma in Subjects with Environmental Asbestos Exposure.

Abstract: The purpose of this study was to investigate the potential value of certain biomarkers in predicting the presence of malignant pleural mesothelioma (MPM) in individuals environmentally exposed to asbestos. This prospective study investigated three groups; a control group composed of 41 healthy subjects, an asbestos exposure group consisting of 48 individuals, and a MPM group consisting of 42 patients. Serum levels of soluble mesothelin-related peptide (SMRP), thioredoxin-1 (TRX), epidermal growth factor receptor (EGFR), fibulin-3, syndecan-1 (SDC-1), and mesothelin were determined. Benign pleural plaques were present in 27 (58.3 %) of the individuals in the asbestos exposure group. The asbestos exposure group had significantly higher mean TRX, SMRP, and mesothelin levels compared to the control group (p = 0.023, p = 0.011, and p < 0.001, respectively). Compared to the asbestos exposure group, the MPM group had significantly higher mean EGFR, TRX, SMRP, and fibulin-3 levels (p = 0.041, p = 0.023, p = 0.002, and p = 0.001, respectively), and significantly lower mean SDC-1 levels (p = 0.002). Unlike the other biomarkers, SMRP and TRX levels increased in a graded fashion among the control, asbestos exposure, and MPM groups, respectively. Area under the curve values for SMRP and TRX were 0.86 and 0.72, respectively (95 % CI 0.79–0.92 and p < 0.001 for SMRP, and 95 % CI 0.62–0.81 and p < 0.001 for TRX). The cut-off value for SMRP was 0.62 nmol/l (sensitivity: 97.6 %, specificity: 68.9 %, positive predictive value (PPV): 56.2 %, and negative predictive value (NPV): 98.3 %) and for TRX was 156.67 ng/ml (sensitivity: 92.9 %, specificity: 77.6 %, PPV: 41.4 %, and NPV: 92.1 %). The combination of the biomarkers reached a sensitivity of 100 %, but had lower specificity (as high as 27.7 %). Serum biomarkers may be helpful for early diagnosis of MPM in asbestos-exposed cases. SMRP and TRX increased in a graded fashion from the controls to asbestos exposure and MPM groups. These two seem to be the most valuable biomarkers for the diagnosis of MPM, both individually and in combination.

New copper(II), manganese(III), nickel(II) and zinc(II) complexes with a chiral quadridentate Schiff base

Abstract: A chiral Schiff base ligand (H2L) was obtained by condensing 2-hydroxynaphthalene-1-carbaldehyde with substituted (1R,2R)-(−)-diaminocyclohexane Chiral Schiff base complexes [CuL], [NiL], [ZnL] and [MnLOH] have been synthesized and characterized by elemental analyses, Λ M, ir, uv–vis and 1H-nmr and magnetic measurements

Assessment of acute phase proteins in acute ischemic stroke.

Abstract: Acute phase proteins (APPs) have been implicated to play important roles during both acute and chronic inflammatory processes in different diseases including ischemic stroke. Though there are several studies showing the importance of APPs as inflammation markers in acute ischemic stroke (AIS), the time course of these proteins during acute phase of AIS is not well known. Thus, the aim of this study was to show the changes in plasma levels of six APPs (i.e., haptoglobin [Hp], ceruloplasmin [Cp], high-sensitive C-reactive protein [h-CRP], fibrinogen, complement 3 [C3] and complement 4 [C4]) during the first 10 days after acute stroke. The study group consisted of 34 female and 19 male patients (n = 53; mean age 65 +/- 12 years), who had first acute ischemic stroke (AIS). An age-matched control group (n = 53; 32 female and 21 male subjects, mean age 62 +/- 6 years) was also included. To evaluate the plasma levels of six APPs, the blood samples of patients with AIS were withdrawn on admission (day 1), and after 3, 5 and 10 days, whereas only one measurement was performed in the control group. In addition, several cerebrovascular risk factors were determined. The peak levels of APPs were higher in the AIS group than the control group (p 0.05). After stroke, h-CRP, C3 and fibrinogen reached their highest values on the third day, Cp and C4 on the fifth day, and Hp on the tenth day. The plasma levels of h-CRP correlated positively with other five APPs studied (p < 0.05). These findings support the importance of inflammation processes after stroke. We suggest that the differences in levels of APPs could be used in predicting the outcome of stroke patients.

Synthesis and spectral characterization of macrocyclic Schiff base by reaction of 2,6-diaminopyridine and 1,4-bis(2-carboxyaldehydephenoxy)butane and its CuII, NiII, PbII, CoIII and LaIII complexes

Abstract: A new macrocyclic ligand, 1,3,5-triaza-2,4:7,8:15,16-tribenzo-9,15-dioxacycloheptadeca-1,5-diene (L) was synthesized by reaction of 2,6-diaminopyridine with 1,4-bis(2-carboxyaldehydephenoxy)butane. Then, its CuII, NiII, PbII, CoIII and LaIII complexes were synthesized by the template effect by reaction of 2,6-diaminopyridine and 1,4-bis (2-carboxyaldehydephenoxy)butane and Cu(NO3)2 · 3H2O, Ni(NO3)2 · 6H2O, Pb(NO3)2, Co(NO3)2 · 6H2O, La (NO3)3 · 6H2O, respectively. The ligand and its metal complexes were characterized by elemental analysis, IR, 1H- and 13C-n.m.r., UV-vis spectra, magnetic susceptibility, thermal gravimetric analysis, conductivity measurements and mass spectra. All complexes are diamagnetic and the CuII complex is binuclear. The CoII complex was oxidised to CoIII.