Uvod: Oksidacioni stres, stanje neravnoteže između reaktivnih vrsta kiseonika i antioksidacione odbrane, igra značajnu ulogu u nastanku i razvoju
 akutnog koronarnog sindroma (AKS). Doprinosi nestabilnosti plaka, inflamaciji i disfunkciji endotela, što na kraju dovodi do rupture plaka i tromboze,
 obeležja AKS.
 Cilj: Cilj ovog rada bio je da se ispitaju promene u pokazateljima oksidacionog stresa- konjugovanih diena (CD), ukupnih hidroperoksida (TH),
 uznapredovalih oksidacionih produkata proteina (AOPP) i elemenata antioksidacione zaštite – koncentracije ukupnih tiola (TT), aktivnosti superoksid
 dismutaze (SOD) i glutation peroksidaze-3 usled akutne miokardne ishemije  u plazmi pacijenata sa ACS.
 Materijal i metode: Određivane su aktivnosti SOD, GPox-3,  i koncentracije CD, TH, AOPP i TT u plazmi kod 77 pacijenata sa AKS u i upoređene  sa
 vrednostima kod 33 zdrava dobrovoljna davaoca krvi.
 Rezultati: Koncentracija CD (p<0,0001), TH (p<0,0001) i AOPP (p<0,0001) je značajno povećana u plazmi pacijenata sa AKS. Koncentracija TT je bila
 nepromenjena (p=0,8859), aktivnost SOD je smanjena (p<0,0001), i povećana aktivnost GPox-3 (p<0,0001) u plazmi pacijenata sa AKS.
 Zaključak: Intenzitet oksidacionog stresa u plazmi u akutnom koronarnom sindromu je visok i ispoljava se povećanom oksidacionom modifikacijom
 lipida i proteina Nivo antioksidacione zaštite je nedovoljan da bi sprečio oksidacionu modifikaciju lipida i proteina u plazmi u akutnom koronarnom
 sindromu i predstavlja slab odgovor na povećani oksidacioni stres.
 Ključne reči: oksidacioni stres, antioksidaciona zaštita, akutni koronarni sindrom

Introduction: The occurrence of microalbuminuria in type 2 diabetes mellitus (T2DM) patients is regarded as an early clinical sign of incipient kidney damage. Microalbuminuria is often evaluated as urinary albumin to urinary creatinine ratio (ACR). Aim: To assess determinants of microalbuminuria in T2DM patients without prior diagnosis of nephropathy using ACR cut-off values. Materials and Methods: ACR was measured in a total of 90 T2DM patients, during two months in three non-consecutive days, and routine biochemical analyses were performed, including glycated hemoglobin (HbA1c), serum uric acid (SUA), and atherogenic index of plasma (AIP). The cut-off values of ACR were ≤ 2.5 mg/mmol in males, and ≤ 3.5 mg/mmol in females. Duration of T2DM, history of hypertension, HbA1c, estimated glomerular filtration rate (eGFR), AIP, and SUA were investigated for association with microalbuminuria. Results: According to ACR patients were considered as non-albuminuric (n= 57) and microalbuminuric (n = 33). Compared to non-albuminuric group, microalbuminuric group had increased urinary creatinine, urinary albumin, HbA1c, triglycerides and SUA, whilst decreased HDL-cholesterol levels. Although eGFR was generally reduced, the correlation between LogACR and eGFR was not significant (p > 0.05). However, the correlation between LogACR and LogHbA1c was significant. The multiple logistic regression analysis revealed HbA1c (t = 3.42; p = 0.012) and SUA (t = 2.44; p = 0.040) as independent predictors of microalbuminuria in T2DM patients. Conclusion: At ACR cut-off values, concentrations of HbA1c and SUA were independent predictors of microalbuminuria in T2DM patients not yet diagnosed with nephropathy.

The aim of this study was to evaluate the diagnostic accuracy of ischemia modified albumin (IMA) alone, or in combination with cardiac troponin T (cTnT) and electrocardiogram (ECG) findings for diagnosis of acute coronary syndrome (ACS). The study included patients with acute chest pain suggestive on ACS, recruited within 6 hours from onset. Patients were classified in ACS group and non-ischemic chest pain group (NICP). Of 84 patients, 49 were diagnosed with ACS and 35 with NICP. IMA was significantly higher in ACS group (p<0.0001). The area under receiver operating curve for IMA in ACS diagnosis was 0.95 (p<0.0001). Sensitivity and specificity of IMA for ACS diagnosis were 89.8% and 91.4%, respectively. IMA significantly (p<0.05) improved the sensitivity of ECG and cTnT, alone, and in combination. Sensitivity and negative predictive value of combination of IMA, ECG and cTnT for diagnosis of ACS were 100%. IMA is useful for diagnosis of ACS, in combination with ECG and cTnT.