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Povzetek: Background: The early detection of ovarian cancer is presently not effective, and it is crucial to establish biomarkers for the early diagnosis of ovarian cancer to improve the survival of patients. Materials and methods: The aim of this study was to investigate the role of thymidine kinase 1 (TK1) in combination with CA 125 or HE4 to serve as a potential diagnostic biomarkers for ovarian cancer. In this study, a set of 198 serum samples consisting of 134 ovarian tumor patients and 64 healthy age-matched controls were analyzed. The TK1 protein levels in serum samples were determined using the AroCell TK 210 ELISA. Results: A combination of TK1 protein with CA 125 or HE4 showed better performance than either of them alone in the differentiation of early stage ovarian cancer from the healthy control group, but also a significantly better performance than the ROMA index. However, this was not observed using a TK1 activity test in combination with the other markers. Furthermore, the combination of TK1 protein and CA 125 or HE4 could differentiate early stage disease (stage I, II) more efficiently from advanced-stage (stage III, IV) disease (p < 0.0001). Conclusions: The combination of TK1 protein with CA 125 or HE4 increased the potential of detecting ovarian cancer at early stages.
Ključne besede: thymidine kinase 1, TK 210 ELISA, TK-liaison, CA 125, HE4, ROMA index, ovarian cancer
Objavljeno v DiRROS: 06.08.2026; Ogledov: 55; Prenosov: 32
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Povzetek: The correct balance between reactive oxygen species and antioxidant defense in an organism is disturbed in oxidative stress. To assess oxidative balance in 36 SSc patients and 26 healthy controls (HCs), we measured reactive oxidative metabolites (ROMs), total antioxidant capacity (TAC), lipid peroxidation (measuring 4-HNE), and DNA oxidative damage (measuring 8-OHdG) in serum. Furthermore, DNA breaks in leukocytes of 35 SSc patients and 32 HCs were evaluated using COMET. While we report high ROMs for both SSc patients and age/sex matched HC samples, there was a significant increase in TAC in SSc patients as compared to HCs, and thus also a significantly higher oxidative stress index in SSc patients. TAC was significantly higher in SSc patients with ILD and gastrointestinal involvement, as well as in patients with anti-topoisomerase antibodies. We observe no difference in serum lipid peroxidation status or oxidative DNA damage. However, SSc patients had significantly more leukocyte DNA breaks than HCs; the most damage was observed in patients treated with immunosuppressives. Thus, our study confirms presence of oxidative stress and increased DNA damage in leukocytes of SSc patients; however, it points toward increased antioxidant capacity, which needs to be further studied.
Ključne besede: systemic sclerosis, oxidative stress, reactive oxidative metabolites, antioxidants, lipid peroxidation, DNA damage, DNA breaks
Objavljeno v DiRROS: 05.08.2026; Ogledov: 64; Prenosov: 49
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Povzetek: Background: Transarterial chemoembolization (TACE) is the treatment of choice for the intermediate stage hepatocellular carcinoma (HCC). Doxorubicin remains the most used chemotherapeutic agent in TACE, although in vitro screening has demonstrated that idarubicin exhibits greater cytotoxicity against HCC. This study aimed to evaluate safety, efficacy, and pharmacokinetics of idarubicin-loaded drug-eluting microspheres TACE (DEMIDA-TACE) in intermediate stage HCC patients. Patients and methods: Between September 2019 and December 2021, 31 consecutive intermediate stage HCC patients (96.8% cirrhotic) were included to this study. 2 mL of LifePearl™ microspheres (100 μm) loaded with 10 mg of 1 mg/mL idarubicin were used for treatment. The adverse events, objective response rate (ORR), progression free survival (PFS), time to TACE untreatable progression (TTUP), median overall survival (mOS), and pharmacokinetics were evaluated. Results: There were 68 TACE procedures performed. Adverse events grade ≥ 3 were noted after 29.4% procedures. The ORR was 83.9%, median PFS and TTUP were 10.5 months (95% CI: 6.8-14.3 months) and 24.6 months (95% CI: 11.6-37.6 months), respectively. Median OS was 36.0 months (95% CI: 21.1-50.9 months). Significant differences between patients achieving objective response (OR) and those with progressive disease were observed regarding idarubicinol and combined idarubicin-idarubicinol plasma concentrations at 72 hours post-procedure, higher plasma concentrations were observed in patients achieving OR (p = 0.014 and 0.014; cut-off values 1.2 and 1.29 ng/mL, respectively). Conclusions: DEMIDA-TACE emerges as a safe and effective method of treatment for the intermediate stage HCC with low rates of adverse events alongside high tumor response, favourable disease control and overall survival. Idarubicinol and combined idarubicin-idarubicinol plasma concentrations at 72 hours post-procedure may serve as prognostic factors for achieving OR.
Ključne besede: drug-eluting microspheres transarterial chemoembolization, efficacy, hepatocellular carcinoma, idarubicin, pharmacokinetics, safety
Objavljeno v DiRROS: 26.06.2026; Ogledov: 187; Prenosov: 132
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Povzetek: Measurement of cardiac troponin in serum is an essential part of diagnosing myocardial infarction in the emergency department. The guidelines suggest that high-sensitivity techniques should be used for measuring cardiac troponin I (cTnI) or cardiac troponin T (cTnT). The aim of our study was to correlate the values of both troponins, and to ascertain which type of troponin is more in agreement with the diagnosis. The patients were classified into four groups: 43 patients in non-ST-elevation myocardial infarction (NSTEMI), 7 in ST-elevation myocardial infarction (STEMI), 48 in Type 2 myocardial infarction, and 21 in the control group. A significant correlation between cTnI and cTnT was found in the NSTEMI (r = 0.70) and Type 2 (r = 0.75) groups while in the control group there was no association (r = −0.06). The ratios of cTnI and cTnT relative to their cut-off values were lower in Type 2 myocardial infarction compared to NSTEMI. This difference can be attributed to the pathophysiology of these two types of heart conditions. The ratio in the NSTEMI group was higher in female than in male patients (53.3 vs. 24.6 ng/L); the same difference was found for the ratio of cTnT (20.8 vs. 13.1 ng/L). In the same manner, the ratios in the Type 2 group were higher in female than in male patients for cTnI (25.6 vs. 12.7 ng/L) as well as for cTnT (19.0 vs. 6.73 ng/L). These differences could be due to biological differences, but they could also be influenced by other factors contributing to different damage responses.
Ključne besede: cardiac troponin I, cardiac troponin T, myocardial infarction
Objavljeno v DiRROS: 03.06.2026; Ogledov: 262; Prenosov: 211
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Povzetek: We evaluated tumor necrosis factor alpha (TNFα) and uterine artery pulsatility index (UtA-PI) in the triage of patients with suspected preterm delivery (PTD), preeclampsia (PE), fetal growth restriction (FGR), and PE+FGR. The study included 125 pregnant women attending high-risk pregnancy clinics for triage of pregnancy complications. There were 31 pure PE cases, 42 cases of PE combined with FGR, 16 pure FGR cases, 15 PTD cases, and 21 term normal delivery controls. Maternal serum TNFα was determined by immune-diagnostic testing. UtA-PI was measured by Doppler sonography. Demographic, medical and pregnancy history, and mean arterial blood pressure (MAP) were extracted from the hospital medical records. Linear regression coefficients, and Box and Whisker plots were calculated and depicted using non-parametric statistics (Kruskal Wallis and Mann–Whitney). Spearman’s regression coefficient assessed marker accuracy; p<0.05 was considered significant. It was found that high TNFα in cases <34 weeks gestation, when coupled to low UtA-PI and normal blood pressure are found in early PTD most likely linked to maternal inflammation. At term, high TNFα combined with high UtA-PI is associated with any FGR (with/without PE), possibly reflecting inflammation and maternal and fetal hypoxia due to the very long period of altered placental perfusion. Accordingly, TNFα, and Doppler UtA-PI could be used for the differential diagnosis of early PTD, and FGR (with/without PE) near delivery.
Ključne besede: fetal growth restriction, gestational week, inflammation, mean arterial blood pressure, placental hypoxia, placental perfusion, preeclampsia, pregnancy
Objavljeno v DiRROS: 18.05.2026; Ogledov: 241; Prenosov: 175
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