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Petrović M, Brković V, Baralić M, Marić I, Petković N, Stanković S, Lalić N, Stanisavljević D, Đukanović L, Ležaić V. Comparative Analysis of Vascular Calcification Risk Factors in Pre-Hemodialysis and Prevalent Hemodialysis Adult Patients: Insights into Calcification Biomarker Associations and Implications for Intervention Strategies in Chronic Kidney Disease. Diagnostics (Basel) 2024; 14:824. [PMID: 38667470 PMCID: PMC11049133 DOI: 10.3390/diagnostics14080824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2024] [Revised: 04/06/2024] [Accepted: 04/12/2024] [Indexed: 04/28/2024] Open
Abstract
This retrospective study aimed to compare risk factors for vascular calcification (VC) between pre-hemodialysis (HD) and prevalent HD adult patients while investigating associations with calcification biomarkers. Baseline data from 30 pre-HD and 85 HD patients were analyzed, including iPTH, vitamin D, FGF 23, fetuin-A, sclerostin, and VC scores (Adragao method). Prevalence of VC was similar in both groups, but HD patients had more frequent VC scores ≥ 6. Pre-HD patients were older, with higher prevalence of hypertension and less frequent use of calcium phosphate binders. Both groups showed similar patterns of hyperphosphatemia, low vitamin D, and iPTH. Fetuin-A and sclerostin levels were higher in pre-HD, while FGF 23 was elevated in HD patients. Higher VC risk in pre-HD patients was associated with male gender, older age, lower fetuin-A and higher sclerostin, lower ferritin, and no vitamin D treatment, while in HD patients with higher sclerostin, FGF 23 and urea, and lower iPTH. Conclusion: Biomarkers could be measurable indicators of biological processes underlying VC in CKD patients that may serve as a potential guide for considering personalized therapeutic approaches. Further studies are needed to elucidate the underlying pathways.
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Affiliation(s)
- Marko Petrović
- Department of Nephrology, University Clinical Centre of Serbia, 11000 Belgrade, Serbia; (M.P.); (M.B.)
| | - Voin Brković
- Department of Nephrology, University Clinical Centre of Serbia, 11000 Belgrade, Serbia; (M.P.); (M.B.)
- Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia (L.Đ.)
| | - Marko Baralić
- Department of Nephrology, University Clinical Centre of Serbia, 11000 Belgrade, Serbia; (M.P.); (M.B.)
- Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia (L.Đ.)
| | - Ivko Marić
- Special Hospital for Internal Diseases, 11550 Lazarevac, Serbia
| | - Nenad Petković
- Fresenius Medical Care Dialysis Center, 76230 Šamac, Bosnia and Herzegovina
| | - Sanja Stanković
- Centre for Medical Biochemistry, University Clinical Centre of Serbia, 11000 Belgrade, Serbia;
- Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia
| | - Nataša Lalić
- Uromedica Polyclinic Belgrade, 11000 Belgrade, Serbia
| | | | - Ljubica Đukanović
- Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia (L.Đ.)
| | - Višnja Ležaić
- Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia (L.Đ.)
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Todorović A, Bobić K, Veljković F, Pejić S, Glumac S, Stanković S, Milovanović T, Vukoje I, Nedeljković JM, Radojević Škodrić S, Pajović SB, Drakulić D. Comparable Toxicity of Surface-Modified TiO 2 Nanoparticles: An In Vivo Experimental Study on Reproductive Toxicity in Rats. Antioxidants (Basel) 2024; 13:231. [PMID: 38397829 PMCID: PMC10886084 DOI: 10.3390/antiox13020231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 02/07/2024] [Accepted: 02/08/2024] [Indexed: 02/25/2024] Open
Abstract
Nanoparticles (NPs), a distinct class of particles ranging in size from 1 to 100 nm, are one of the most promising technologies of the 21st century, and titanium dioxide NPs (TiO2 NPs) are among the most widely produced and used NPs globally. The increased application of TiO2 NPs raises concerns regarding their global safety and risks of exposure. Many animal studies have reported the accumulation of TiO2 NPs in female reproductive organs; however, evidence of the resultant toxicity remains ambiguous. Since the surface area and chemical modifications of NPs can significantly change their cytotoxicity, we aimed to compare the toxic effects of pristine TiO2 powder with surface-modified TiO2 powders with salicylic acid (TiO2/SA) and 5-aminosalicylic acid (TiO2/5-ASA) on the ovaries, oviducts, and uterus on the 14th day following acute oral treatment. The results, based on alterations in food and water intake, body mass, organ-to-body mass ratio, hormonal status, histological features of tissues of interest, and antioxidant parameters, suggest that the modification with 5-ASA can mitigate some of the observed toxic effects of TiO2 powder and encourage future investigations to create NPs that can potentially reduce the harmful effects of TiO2 NPs while preserving their positive impacts.
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Affiliation(s)
- Ana Todorović
- Department of Molecular Biology and Endocrinology, VINČA Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia; (A.T.); (K.B.); (S.P.); (S.B.P.); (D.D.)
| | - Katarina Bobić
- Department of Molecular Biology and Endocrinology, VINČA Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia; (A.T.); (K.B.); (S.P.); (S.B.P.); (D.D.)
| | - Filip Veljković
- Department of Physical Chemistry, VINČA Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia;
| | - Snežana Pejić
- Department of Molecular Biology and Endocrinology, VINČA Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia; (A.T.); (K.B.); (S.P.); (S.B.P.); (D.D.)
| | - Sofija Glumac
- Institute of Pathology, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia
| | - Sanja Stanković
- Centre for Medical Biochemistry, University Clinical Centre of Serbia, 11000 Belgrade, Serbia;
- Faculty of Medical Sciences, University of Kragujevac, 550601 Kragujevac, Serbia
| | | | - Ivana Vukoje
- Department of Radiation Chemistry and Physics, VINČA Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia; (I.V.); (J.M.N.)
| | - Jovan M. Nedeljković
- Department of Radiation Chemistry and Physics, VINČA Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia; (I.V.); (J.M.N.)
| | | | - Snežana B. Pajović
- Department of Molecular Biology and Endocrinology, VINČA Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia; (A.T.); (K.B.); (S.P.); (S.B.P.); (D.D.)
| | - Dunja Drakulić
- Department of Molecular Biology and Endocrinology, VINČA Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia; (A.T.); (K.B.); (S.P.); (S.B.P.); (D.D.)
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3
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Krljanac G, Apostolović S, Polovina M, Maksimović R, Nedeljković Arsenović O, Đorđevic N, Stanković S, Savić L, Ušćumlić A, Stanković S, Ašanin M. Differences in left ventricular myocardial function and infarct size in female patients with ST elevation myocardial infarction and spontaneous coronary artery dissection. Front Cardiovasc Med 2024; 10:1280605. [PMID: 38259320 PMCID: PMC10800883 DOI: 10.3389/fcvm.2023.1280605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Accepted: 12/19/2023] [Indexed: 01/24/2024] Open
Abstract
Introduction Differences in pathophysiology, clinical presentation, and natural course of ST-elevation myocardial infarction in female patients due to either spontaneous dissection (SCAD-STEMI) or atherothrombotic occlusion (type 1 STEMI) have been discussed. Current knowledge on differences in left ventricular myocardial function and infarct size is limited. The aim of this study was to assess baseline clinical characteristics, imaging findings, and therapeutic approach and to compare differences in echocardiographic findings at baseline and 3-month follow-up in patients with SCAD-STEMI and type 1 STEMI. Methods This was a prospective multicenter study of 32 female patients (18-55 years of age) presenting with either SCAD-STEMI due to left anterior descending coronary artery (LAD) dissection or type 1 STEMI due to atherothrombotic LAD occlusion. Results The two groups were similar in age, risk factors, comorbidities, and complications. SCAD-STEMI patients more often had Thrombolysis in Myocardial Infarction 3 flow, while type 1 STEMI patients were more often treated with percutaneous coronary intervention and dual antiplatelet therapy. Baseline mean left ventricular (LV) ejection fraction (LVEF) was similar in the two groups (48.0% vs. 48.6%, p = 0.881), but there was a significant difference at the 3-month follow-up, driven by an improvement in LVEF in SCAD-STEMI compared to type 1 STEMI patients (Δ LVEF 10.1 ± 5.3% vs. 1.8 ± 5.1%, p = 0.002). LV global longitudinal strain was slightly improved in both groups at follow-up; however, the improvement was not significantly different between groups (-4.6 ± 2.9% vs. -2.0 ± 2.8%, p = 0.055). Conclusions The results suggest that female patients with SCAD-STEMI are more likely to experience improvement in LV systolic function than type 1 STEMI patients.
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Affiliation(s)
- Gordana Krljanac
- Cardiology Clinic, University Clinical Center of Serbia, Belgrade, Serbia
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Svetlana Apostolović
- Coronary Care Unit, Cardiology Clinic, University Clinical Center of Nis, Nis, Serbia
- Faculty of Medicine, University of Nis, Nis, Serbia
| | - Marija Polovina
- Cardiology Clinic, University Clinical Center of Serbia, Belgrade, Serbia
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Ružica Maksimović
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia
- Center for Radiology and Magnetic Resonance Imaging, University Clinical Center of Serbia, Belgrade, Serbia
| | - Olga Nedeljković Arsenović
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia
- Center for Radiology and Magnetic Resonance Imaging, University Clinical Center of Serbia, Belgrade, Serbia
| | - Nemanja Đorđevic
- Cardiology Clinic, University Clinical Center of Serbia, Belgrade, Serbia
| | - Stefan Stanković
- Cardiology Clinic, University Clinical Center of Serbia, Belgrade, Serbia
| | - Lidija Savić
- Cardiology Clinic, University Clinical Center of Serbia, Belgrade, Serbia
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Ana Ušćumlić
- Cardiology Clinic, University Clinical Center of Serbia, Belgrade, Serbia
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Sanja Stanković
- Center for Medical Biochemistry, University Clinical Center of Serbia, Belgrade, Serbia
- Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
| | - Milika Ašanin
- Cardiology Clinic, University Clinical Center of Serbia, Belgrade, Serbia
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia
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Lazarević LB, Knežević G, Purić D, Teovanović P, Petrović MB, Ninković M, Živanović M, Stanković S, Branković M, Lukić P, Opačić G, Žeželj I. Tracking variations in daily questionable health behaviors and their psychological roots: a preregistered experience sampling study. Sci Rep 2023; 13:14058. [PMID: 37640927 PMCID: PMC10462719 DOI: 10.1038/s41598-023-41243-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 08/23/2023] [Indexed: 08/31/2023] Open
Abstract
People resort to various questionable health practices to preserve or regain health - they intentionally do not adhere to medical recommendations (e.g. self-medicate or modify the prescribed therapies; iNAR), or use traditional/complementary/alternative (TCAM) medicine. As retrospective reports overestimate adherence and suffer from recall and desirability bias, we tracked the variations in daily questionable health behaviors and compared them to their retrospectively reported lifetime use. We also preregistered and explored their relations to a wide set of psychological predictors - distal (personality traits and basic thinking dispositions) and proximal (different unfounded beliefs and biases grouped under the term irrational mindset). A community sample (N = 224) tracked daily engagement in iNAR and TCAM use for 14 days, resulting in 3136 data points. We observed a high rate of questionable health practices over the 14 days; daily engagement rates roughly corresponded to lifetime ones. Both iNAR and TCAM were weakly, but robustly positively related. Independent of the assessment method, an irrational mindset was the most important predictor of TCAM use. For iNAR, however, psychological predictors emerged as relevant only when assessed retrospectively. Our study offers insight into questionable health behaviors from both a within and between-person perspective and highlights the importance of their psychological roots.
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Affiliation(s)
- L B Lazarević
- Faculty of Philosophy, Institute of Psychology, University of Belgrade, Belgrade, Serbia
- Faculty of Philosophy, Laboratory for Research of Individual Differences, University of Belgrade, Belgrade, Serbia
| | - G Knežević
- Faculty of Philosophy, Laboratory for Research of Individual Differences, University of Belgrade, Belgrade, Serbia
- Faculty of Philosophy, Department of Psychology, University of Belgrade, Čika Ljubina 18-20, 11000, Belgrade, Serbia
| | - D Purić
- Faculty of Philosophy, Laboratory for Research of Individual Differences, University of Belgrade, Belgrade, Serbia
- Faculty of Philosophy, Department of Psychology, University of Belgrade, Čika Ljubina 18-20, 11000, Belgrade, Serbia
| | - P Teovanović
- Faculty of Philosophy, Laboratory for Research of Individual Differences, University of Belgrade, Belgrade, Serbia
- Faculty of Special Education and Rehabilitation, University of Belgrade, Belgrade, Serbia
| | - M B Petrović
- Faculty of Philosophy, Laboratory for Research of Individual Differences, University of Belgrade, Belgrade, Serbia
- Faculty of Philosophy, Department of Psychology, University of Belgrade, Čika Ljubina 18-20, 11000, Belgrade, Serbia
| | - M Ninković
- Faculty of Philosophy, Laboratory for Research of Individual Differences, University of Belgrade, Belgrade, Serbia
- Faculty of Philosophy, Department of Psychology, University of Belgrade, Čika Ljubina 18-20, 11000, Belgrade, Serbia
| | - M Živanović
- Faculty of Philosophy, Institute of Psychology, University of Belgrade, Belgrade, Serbia
- Faculty of Philosophy, Laboratory for Research of Individual Differences, University of Belgrade, Belgrade, Serbia
| | - S Stanković
- Faculty of Philosophy, Institute of Psychology, University of Belgrade, Belgrade, Serbia
- Faculty of Philosophy, Laboratory for Research of Individual Differences, University of Belgrade, Belgrade, Serbia
| | - M Branković
- Faculty of Philosophy, Laboratory for Research of Individual Differences, University of Belgrade, Belgrade, Serbia
- Institute for Philosophy and Social Theory, University of Belgrade, Belgrade, Serbia
- Faculty of Media and Communication, Singidunum University, Belgrade, Serbia
| | - P Lukić
- Faculty of Philosophy, Laboratory for Research of Individual Differences, University of Belgrade, Belgrade, Serbia
- Faculty of Philosophy, Department of Psychology, University of Belgrade, Čika Ljubina 18-20, 11000, Belgrade, Serbia
| | - G Opačić
- Faculty of Philosophy, Laboratory for Research of Individual Differences, University of Belgrade, Belgrade, Serbia
- Faculty of Philosophy, Department of Psychology, University of Belgrade, Čika Ljubina 18-20, 11000, Belgrade, Serbia
| | - I Žeželj
- Faculty of Philosophy, Laboratory for Research of Individual Differences, University of Belgrade, Belgrade, Serbia.
- Faculty of Philosophy, Department of Psychology, University of Belgrade, Čika Ljubina 18-20, 11000, Belgrade, Serbia.
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5
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Grigorov I, Pejić S, Todorović A, Drakulić D, Veljković F, Vukajlović JM, Bobić K, Soldatović I, Đurašević S, Jasnić N, Stanković S, Glumac S, Mihailović-Vučinić V, Milenković B. Serum High-Mobility Group Box 1 and Heme Oxygenase-1 as Biomarkers in COVID-19 Patients at Hospital Admission. Int J Mol Sci 2023; 24:13164. [PMID: 37685970 PMCID: PMC10488018 DOI: 10.3390/ijms241713164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 08/06/2023] [Accepted: 08/18/2023] [Indexed: 09/10/2023] Open
Abstract
The careful monitoring of patients with mild/moderate COVID-19 is of particular importance because of the rapid progression of complications associated with COVID-19. For prognostic reasons and for the economic management of health care resources, additional biomarkers need to be identified, and their monitoring can conceivably be performed in the early stages of the disease. In this retrospective cross-sectional study, we found that serum concentrations of high-mobility group box 1 (HMGB1) and heme oxygenase-1 (HO-1), at the time of hospital admission, could be useful biomarkers for COVID-19 management. The study included 160 randomly selected recovered patients with mild to moderate COVID-19 on admission. Compared with healthy controls, serum HMGB1 and HO-1 levels increased by 487.6 pg/mL versus 43.1 pg/mL and 1497.7 pg/mL versus 756.1 pg/mL, respectively. Serum HO-1 correlated significantly with serum HMGB1, oxidative stress parameters (malondialdehyde (MDA), the phosphatidylcholine/lysophosphatidylcholine ratio (PC/LPC), the ratio of reduced and oxidative glutathione (GSH/GSSG)), and anti-inflammatory acute phase proteins (ferritin, haptoglobin). Increased heme catabolism/hemolysis were not detected. We hypothesize that the increase in HO-1 in the early phase of COVID-19 disease is likely to have a survival benefit by providing protection against oxidative stress and inflammation, whereas the level of HMGB1 increase reflects the activity of the innate immune system and represents levels within which the disease can be kept under control.
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Affiliation(s)
- Ilijana Grigorov
- Institute for Biological Research “Siniša Stanković”—National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia
| | - Snežana Pejić
- Vinča Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia; (S.P.); (A.T.); (D.D.); (F.V.); (J.M.V.); (K.B.)
| | - Ana Todorović
- Vinča Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia; (S.P.); (A.T.); (D.D.); (F.V.); (J.M.V.); (K.B.)
| | - Dunja Drakulić
- Vinča Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia; (S.P.); (A.T.); (D.D.); (F.V.); (J.M.V.); (K.B.)
| | - Filip Veljković
- Vinča Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia; (S.P.); (A.T.); (D.D.); (F.V.); (J.M.V.); (K.B.)
| | - Jadranka Miletić Vukajlović
- Vinča Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia; (S.P.); (A.T.); (D.D.); (F.V.); (J.M.V.); (K.B.)
| | - Katarina Bobić
- Vinča Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia; (S.P.); (A.T.); (D.D.); (F.V.); (J.M.V.); (K.B.)
| | - Ivan Soldatović
- Institute of Medical Statistics and Informatic, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia;
| | - Siniša Đurašević
- Faculty of Biology, University of Belgrade, 11000 Belgrade, Serbia; (S.Đ.); (N.J.)
| | - Nebojša Jasnić
- Faculty of Biology, University of Belgrade, 11000 Belgrade, Serbia; (S.Đ.); (N.J.)
| | - Sanja Stanković
- Center for Medical Biochemistry, University Clinical Center of Serbia, 11000 Belgrade, Serbia;
| | - Sofija Glumac
- Institute of Pathology, School of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (S.G.); (V.M.-V.); (B.M.)
| | - Violeta Mihailović-Vučinić
- Institute of Pathology, School of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (S.G.); (V.M.-V.); (B.M.)
- Clinic for Pulmonary Diseases, University Clinical Center of Serbia, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia
| | - Branislava Milenković
- Institute of Pathology, School of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (S.G.); (V.M.-V.); (B.M.)
- Clinic for Pulmonary Diseases, University Clinical Center of Serbia, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia
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6
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Milovanović APS, Milovanović A, Srebro D, Pajic J, Stanković S, Petrović T. Serum Concentration of Prostaglandin E2 as a Diagnostic Biomarker in Patients With Silicosis: A Case-Control Study. J Occup Environ Med 2023; 65:546-552. [PMID: 36977359 DOI: 10.1097/jom.0000000000002848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
Abstract
OBJECTIVE Silicosis is a prevalent incurable pneumoconiosis caused by inhalation of silica dust. Study aimed to investigate inflammatory, hematological, and biochemical parameters as additional biomarkers for diagnosing or monitoring silicosis. METHODS Research enrolled 14 workers with silicosis and 7 healthy controls (without exposure and silicosis). The serum level of prostaglandin E2, C-reactive protein, fibrinogen, biochemical, and hematological parameters were measured. The receiver operating characteristic curve was used to determine diagnostic sensitivity of each biomarker. RESULTS Patients with silicosis have a significantly higher level of prostaglandin E2, erythrocyte, hemoglobin, and hematocrit than patients without silicosis. Prostaglandin E2, hemoglobin, and the erythrocyte count are significant in separating the silicosis cases from healthy controls. CONCLUSIONS Prostaglandin E2 might be an adjuvant peripheral diagnostic biomarker for silicosis, while hematological parameters (erythrocytes, hemoglobin, and hematocrit) might be prognostic biomarkers.
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Affiliation(s)
- Aleksandar P S Milovanović
- From the University of Belgrade, Faculty of Medicine; Belgrade, Serbia (A.P.S.M., A.M., D.S., T.P.); Serbian Institute of Occupational Health "Dr Dragomir Karajovic," Belgrade, Serbia (A.P.S.M. J.P., T.P.); Clinic for Rehabilitation, University Clinical Center of Serbia, Belgrade, Serbia (A.M.); University of Kragujevac, Faculty of Medical Sciences, Kragujevac, Serbia (S.S.); and Center for Medical Biochemistry, University Clinical Center of Serbia, Belgrade, Serbia (S.S.)
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7
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Purić D, Petrović MB, Živanović M, Lukić P, Zupan Z, Branković M, Ninković M, Lazarević LB, Stanković S, Žeželj I. Development of a novel instrument for assessing intentional non-adherence to official medical recommendations (iNAR-12): a sequential mixed-methods study in Serbia. BMJ Open 2023; 13:e069978. [PMID: 37369402 PMCID: PMC10410978 DOI: 10.1136/bmjopen-2022-069978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 06/13/2023] [Indexed: 06/29/2023] Open
Abstract
OBJECTIVES We aimed to (1) develop a novel instrument, suitable for the general population, capturing intentional non-adherence (iNAR), consisting of non-adherence to prescribed therapy, self-medication and avoidance of seeking medical treatment; (2) differentiate it from other forms of non-adherence, for example, smoking; and (3) relate iNAR to patient-related factors, such as sociodemographics, health status and endorsement of irrational beliefs (conspiratorial thinking and superstitions) and to healthcare-related beliefs and experiences ((mis)trust and negative experiences with the healthcare system, normalisation of patient passivity). DESIGN То generate iNAR items, we employed a focus group with medical doctors, supplemented it with a literature search and invited a public health expert to refine it further. We examined the internal structure and predictors of iNAR in an observational study. SETTING Data were collected online using snowball sampling and social networks. PARTICIPANTS After excluding those who failed one or more out of three attention checks, the final sample size was n=583 adult Serbian citizens, 74.4% female, mean age 39.01 years (SD=12.10). PRIMARY AND SECONDARY OUTCOME MEASURES The primary, planned outcome is the iNAR Questionnaire, while smoking was used for comparison purposes. RESULTS Factor analysis yielded a one-factor solution, and the final 12-item iNAR Questionnaire had satisfactory internal reliability (alpha=0.72). Health condition and healthcare-related variables accounted for 14% of the variance of iNAR behaviours, whereas sociodemographics and irrational beliefs did not additionally contribute. CONCLUSIONS We constructed a brief yet comprehensive measure of iNAR behaviours and related them to health and sociodemographic variables and irrational beliefs. The findings suggest that public health interventions should attempt to improve patients' experiences with the system and build trust with their healthcare practitioners rather than aim at specific demographic groups or at correcting patients' unfounded beliefs. STUDY REGISTRATION The design and confirmatory analyses plan were preregistered (https://osf.io/pnugm).
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Affiliation(s)
- D Purić
- Department of Psychology, University of Belgrade, Belgrade, Serbia
- Laboratory for Research of Individual Differences, University of Belgrade, Belgrade, Serbia
| | - M B Petrović
- Department of Psychology, University of Belgrade, Belgrade, Serbia
- Laboratory for Research of Individual Differences, University of Belgrade, Belgrade, Serbia
| | - M Živanović
- Laboratory for Research of Individual Differences, University of Belgrade, Belgrade, Serbia
- Institute for Psychology, University of Belgrade, Belgrade, Serbia
| | - P Lukić
- Department of Psychology, University of Belgrade, Belgrade, Serbia
- Laboratory for Research of Individual Differences, University of Belgrade, Belgrade, Serbia
| | - Z Zupan
- Laboratory for Research of Individual Differences, University of Belgrade, Belgrade, Serbia
- Institute for Psychology, University of Belgrade, Belgrade, Serbia
| | - M Branković
- Institute for Philosophy and Social Theory, Belgrade, Serbia
- Singidunum University, Belgrade, Serbia
| | - M Ninković
- Department of Psychology, University of Belgrade, Belgrade, Serbia
- Laboratory for Research of Individual Differences, University of Belgrade, Belgrade, Serbia
| | - L B Lazarević
- Laboratory for Research of Individual Differences, University of Belgrade, Belgrade, Serbia
- Institute for Psychology, University of Belgrade, Belgrade, Serbia
| | - S Stanković
- Laboratory for Research of Individual Differences, University of Belgrade, Belgrade, Serbia
- Institute for Psychology, University of Belgrade, Belgrade, Serbia
| | - I Žeželj
- Department of Psychology, University of Belgrade, Belgrade, Serbia
- Laboratory for Research of Individual Differences, University of Belgrade, Belgrade, Serbia
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Beletić A, Dudvarski-Ilić A, Nagorni-Obradović L, Milenković B, Ljujić M, Radojković D, Đorđević V, Stanković S. W138 Interpretative cut-off for alpha-1-antitrypsin concentration in detection of alpha-1-antitrypsin deficiency among adults – a pilot study in the Republic of Serbia. Clin Chim Acta 2022. [DOI: 10.1016/j.cca.2022.04.893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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9
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Jorgačević B, Stanković S, Filipović J, Samardžić J, Vučević D, Radosavljević T. Betaine modulates MIF-mediated oxidative stress, inflammation, and fibrogenesis in Thioacetamide-induced Nephrotoxicity. Curr Med Chem 2022; 29:5254-5267. [PMID: 35400322 DOI: 10.2174/0929867329666220408102856] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 12/15/2021] [Accepted: 01/19/2022] [Indexed: 11/22/2022]
Abstract
BACKGROUND Macrophage migration inhibitory factor (MIF) is a proinflammatory cytokine with chemokine properties released by various immune and nonimmune cells. It contributes to the pathogenesis of many inflammatory, autoimmune diseases and malignant tumors. OBJECTIVE Our study aimed to investigate the role of betaine in the modulation of MIF-mediated oxidative stress, inflammation, and fibrogenesis during toxic kidney damage induced by thioacetamide (TAA). METHODS The experiment is performed on wild-type and knockout MIF-/- C57BL/6 mice. They are randomly divided into groups: Control; Bet-group, received betaine (2% wt/v dissolved in drinking water); MIF-/- mice group; MIF-/-+Bet; TAA-group, treated with TAA (200 mg/kg b.w.), intraperitoneally, 3x/week/8 weeks); TAA+Bet; MIF-/-+TAA, and MIF-/-+TAA+Bet group. After eight weeks of treatment, animals are sacrificed and kidney samples are taken to determine oxidative stress parameters, proinflammatory cytokines, profibrogenic factors, and histopathology of renal tissue Results: In MIF-/-mice, TAA decreases malondialdehyde (MDA) concentration, IL-6, tumor necrosis factor-alpha (TNF-, transforming growth factor-beta 1 (TGF-1) and plateled-derived growth factor-BB (PDGF-BB) and increases superoxide dismutases (SOD) and catalase (CAT) activities, as well as glutathione (GSH) content in kidneys, compared to TAA group. Betaine alleviates the mechanism of MIF-mediated effects in TAA-induced nephrotoxicity, reducing MDA, IL-6, TNF-, TGF-1, and PDGF-BB, and increasing SOD and CAT activity, as well as GSH levels. CONCLUSION MIF mediates TAA-induced nephrotoxicity by increasing oxidative stress, inflammation, and profibrogenic mediators. MIF-targeted therapy could potentially alleviate oxidative stress and inflammation in the kidney, as well as pathohistological changes in renal tissue, but the exact mechanism of its action is not completely clear. Betaine alleviates MIF nephrotoxic effects by increasing the antioxidative capacity of kidney cells, and decreasing lipid peroxidation and cytokine production in the renal tissue. It suggests that betaine can be used for the prevention of kidney damage.
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Affiliation(s)
- Bojan Jorgačević
- Institute of Pathophysiology \'\'Ljubodrag Buba Mihailović\'\', Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia
| | - Sanja Stanković
- Centre of Medical Biochemistry, Clinical Centre of Serbia, 11000 Belgrade, Belgrade, Serbia
| | - Jelena Filipović
- Institute of Pathology \'\'Đorđe Jovanović\'\', Faculty of Medicine, University of Belgrade, 11000 Belgrade,Serbia
| | - Janko Samardžić
- Institute of Pharmacology, Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia
| | - Danijela Vučević
- Institute of Pathophysiology \'\'Ljubodrag Buba Mihailović\'\', Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia
| | - Tatjana Radosavljević
- Institute of Pathophysiology \'\'Ljubodrag Buba Mihailović\'\', Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia
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10
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Beletić A, Tijanić A, Chrastina P, Nikolić T, Stefanović A, Stanković S. The markers of the organic acidemias and their ratios in healthy neonates in Serbian population. Drug Metab Pers Ther 2022; 37:271-275. [PMID: 35254746 DOI: 10.1515/dmpt-2021-0218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 02/08/2022] [Indexed: 11/15/2022]
Abstract
OBJECTIVES The newborn screening (NBS) program in the Republic of Serbia has several decades of tradition, but it has not included any organic acidemias (OA). Therefore, this study aimed to establish the cut-offs of the corresponding NBS markers in the population of healthy newborns. METHODS In dried blood samples (DBS) collected from 1,771 healthy newborns, we analyzed levels of propionylcarnitine (C3), isovalerylcarnitine (C5), and glutarylcarnitine (C5DC) using tandem mass spectrometry. Further we calculated the following ratios: C3/acetylcarnitine (C3/C2), C3/palmitoylcarnitine (C3/C16), C5/ free carnitine (C0), C5/C2, C5/C3, C5DC/octanoylcarnitine (C8), and C5DC/C0. RESULTS The cut-offs for methylmalonic acidemia (MMA) or propionic acidemia (PA) were C3>5.73 μmol/L, C3/C2>0.23, and C3/C16>2.36. Based on the study findings, the screening results indicative for isovaleric acidemia (IVA) would include C5>0.372 μmol/L, C5/C0>0.020, C5/C2>0.019, and C5/C3>0.31. Finally, C5DC>0.303 μmol/L, C5DC/C8>7.1, and C5DC/C0>0.019 would justify further testing for glutaric acidemia type I (GA1). The cut-offs were satisfactorily validated via the comparison with worldwide estimates and data for several Caucasian populations. CONCLUSIONS The levels of the OA biomarkers in the Serbian population of healthy newborns have a distribution pattern similar to the other world populations. Therefore, the proposed cut-offs represent a reliable starting point for the future development of the OA NBS.
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Affiliation(s)
- Anđelo Beletić
- Center for Medical Biochemistry, University Clinical Center of Serbia, Belgrade, Serbia
| | - Aleksandra Tijanić
- Center for Medical Biochemistry, University Clinical Center of Serbia, Belgrade, Serbia
| | - Petr Chrastina
- Department of Pediatrics and Inherited Metabolic Disorders, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
| | - Tatjana Nikolić
- Clinic for Gynecology and Obstetrics, University Clinical Centre of Serbia, Belgrade, Serbia
| | - Aleksandar Stefanović
- Clinic for Gynecology and Obstetrics, University Clinical Centre of Serbia, Belgrade, Serbia
- School of Medicine, University of Belgrade, Belgrade, Serbia
| | - Sanja Stanković
- Center for Medical Biochemistry, University Clinical Center of Serbia, Belgrade, Serbia
- Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
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11
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Soldat-Stanković V, Popović-Pejičić S, Stanković S, Prtina A, Malešević G, Bjekić-Macut J, Livadas S, Ognjanović S, Mastorakos G, Micić D, Macut D. The effect of metformin and myoinositol on metabolic outcomes in women with polycystic ovary syndrome: role of body mass and adiponectin in a randomized controlled trial. J Endocrinol Invest 2022; 45:583-595. [PMID: 34665453 DOI: 10.1007/s40618-021-01691-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Accepted: 10/08/2021] [Indexed: 12/20/2022]
Abstract
PURPOSE To compare the effects of insulin sensitizers metformin (MET) and myo-inositol (MI) on adiponectin levels and metabolic characteristics in women with polycystic ovary syndrome (PCOS) with respect to their body mass index (BMI). METHODS In this open label, parallel randomized clinical trial, 66 women with PCOS (33 normal-weight and 33 overweight/obese) were randomized to either MI (4 g/day) or MET (1500 mg/day) for a period of 6 months. Serum concentration of adiponectin, hormonal and metabolic laboratory outcomes and clinical assessment of BMI, body composition and Ferriman-Gallwey score (FG score) were evaluated before and after treatment. RESULTS After the 6-month intervention, comparison between MET and MI in time to treatment analysis showed no significant differences between the two treatments for all analyzed parameters. Only borderline significantly lower AUC glucose was found in the MET group in comparison to the MI group (p = 0.071). The main effect of treatment was shown for glucose concentration at 120 min OGTT (p = 0.032) and testosterone (p = 0.002). The main effect of time was shown for body mass (p = 0.004), waist circumference (p < 0.001), BMI (p = 0.003), body fat mass (p = 0.001), adiponectin (p = 0.020), fasting glucose (p = 0.001), testosterone (p = 0.015), SHBG (p = 0.013), 17OH progesterone (p = 0.008), LH (p = 0.004) and estradiol (p = 0.014). CONCLUSION Our study showed similar effects of MET and MI on BMI, body composition, hormonal profile, metabolism of glucose and insulin, and adiponectin level. The two insulin sensitizers, MET and MI, were useful in reducing BMI and improving body composition without significant differences between the two treatments in PCOS women. TRIAL REGISTRATION ISRCTN13199265. Trial registration date: 14.04.2021. (ISRCTN Registry), retrospectively registered.
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Affiliation(s)
- V Soldat-Stanković
- University Clinical Center of the Republic of Srpska, Internal Medicine Clinic, Faculty of Medicine, University of Banja Luka, Banja Luka, Bosnia and Herzegovina
| | - S Popović-Pejičić
- University Clinical Center of the Republic of Srpska, Internal Medicine Clinic, Faculty of Medicine, University of Banja Luka, Banja Luka, Bosnia and Herzegovina
| | - S Stanković
- Faculty of Medicine, University of Banja Luka, Banja Luka, Bosnia and Herzegovina
| | - A Prtina
- Faculty of Medicine, University of Banja Luka, Banja Luka, Bosnia and Herzegovina
| | - G Malešević
- University Clinical Center of the Republic of Srpska, Internal Medicine Clinic, Faculty of Medicine, University of Banja Luka, Banja Luka, Bosnia and Herzegovina
| | - J Bjekić-Macut
- Department of Endocrinology, CHC Bežanijska Kosa, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - S Livadas
- Endocrine Unit, Metropolitan Hospital, Athens, Greece
| | - S Ognjanović
- Clinic of Endocrinology, Diabetes and Metabolic Diseases, Clinical Center of Serbia, Faculty of Medicine, University of Belgrade, dr Subotica 13, 11000, Belgrade, Serbia
| | - G Mastorakos
- Unit of Endocrine Diseases, Aretaieion Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - D Micić
- Department of Medical Sciences, Serbian Academy of Sciences and Arts, Belgrade, Serbia
| | - D Macut
- Clinic of Endocrinology, Diabetes and Metabolic Diseases, Clinical Center of Serbia, Faculty of Medicine, University of Belgrade, dr Subotica 13, 11000, Belgrade, Serbia.
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12
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Savić I, Nikolić M, Nikolić A, Kandić V, Vico I, Duduk N, Stanković S. First Report of Fusarium verticillioides Causing Fusariosis on Triticale Grain in Serbia. Plant Dis 2022; 106:1071. [PMID: 34735280 DOI: 10.1094/pdis-07-21-1579-pdn] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Affiliation(s)
- I Savić
- Maize Research Institute, Zemun Polje, Slobodana Bajića 1, 11185 Belgrade, Serbia
| | - M Nikolić
- Maize Research Institute, Zemun Polje, Slobodana Bajića 1, 11185 Belgrade, Serbia
| | - A Nikolić
- Maize Research Institute, Zemun Polje, Slobodana Bajića 1, 11185 Belgrade, Serbia
| | - V Kandić
- Maize Research Institute, Zemun Polje, Slobodana Bajića 1, 11185 Belgrade, Serbia
| | - I Vico
- University in Belgrade, Faculty of Agriculture, Nemanjina 6, 11080 Belgrade, Serbia
| | - N Duduk
- University in Belgrade, Faculty of Agriculture, Nemanjina 6, 11080 Belgrade, Serbia
| | - S Stanković
- Maize Research Institute, Zemun Polje, Slobodana Bajića 1, 11185 Belgrade, Serbia
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13
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Stanković S, Tasić-Kostov M. Formulation of biologics for alternative routes of administration: Current problems and perspectives. Acta fac medic Naissensis 2022. [DOI: 10.5937/afmnai39-35426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Introduction: Biologics (biopharmaceuticals) present new promising therapies for many diseases such as cancers, chronical inflammatory diseases and today's biggest challenge - COVID-19. Research: Today, most biologics have been synthetized using modern methods of biotechnology, in particular DNA recombinant technology. Current pharmaceutical forms of protein/peptide biopharmaceuticals are intended for parenteral route of administration due to their instability and large size of molecules. In order to improve patient compliance, many companies are working on developing adequate forms of biopharmaceuticals for alternative, non-invasive routes of administration. The aim of this work is to review current aspirations and problems in formulation of biopharmaceuticals for alternative (non-parenteral) routes of administration and to review the attempts to overcome them. These alternative routes of administration could be promising in prevention and treatment of COVID-19, among other serious diseases. Conclusion: The emphasis is on stabilizing monoclonal antibodies into special formulations and delivery systems; their application should be safer, more comfortable and reliable. When it comes to hormones, vaccines and smaller peptides, some companies have already registered drugs intended for nasal and oral delivery.
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Đuric D, Gatarić N, Todorović D, Stanković S, Dragičević-Cvjetković D, Stojiljković M, Škrbić R, Vučković S. The effects of subchronic intake of magnesium hydro-carbonate-rich mineral water on cardiometabolic markers and electrolytes in rats with streptozotocin-induced diabetes. Scripta Medica 2022. [DOI: 10.5937/scriptamed53-40112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Background/Aim: Hypomagnesaemia is one of the most detected electrolyte abnormalities in diabetics. Modulation of numerous cardiovascular pathophysiological processes is a potential goal for anti-diabetic therapy. Magnesium supplementation prevents subclinical tissue magnesium deficiency, thus delaying the onset of metabolic imbalance in diabetes, but long-term effects of magnesium supplementation in chronic diabetes and numerous pathophysiological processes remain unknown. Aim of this study was to determine the effects of subchronic intake of magnesium hydrocarbonate-rich mineral water on cardiometabolic markers and electrolytes in rats with streptozotocin-induced diabetes. Methods: A total of 28 Wistar, male rats, body weight 160 g at start, were divided into four groups of 7 each: two controls, group that drank tap water and received a single ip injection of saline (0.9 % NaCl) (TW-C), group that drank mineral water rich in magnesium hydrocarbonate and received a single ip injection of saline (0.9 % NaCl) (MW-C); and two experimental groups with streptozotocin-induced diabetes, group that drank tap water and received a single ip injection of streptozotocin (100 mg/kg) in saline (0.9 % NaCl, 1 mL) (TW-DM), group that drank mineral water rich in magnesium hydrocarbonate and received a single ip injection of streptozotocin (100 mg/kg) in saline (0.9 % NaCl, 1 mL) (MW-DM). Results: Regarding the biochemical parameters, a decrease was observed in the MW-C group for vitamin B12 and proteins, while triglycerides were higher compared to the TW-C group. By comparing the haemostatic biomarkers between TW-C and MW-C groups, a statistically significant decrease was found for fibrinogen, while the electrolyte analysis showed an increase in phosphates for the MW-C group. Biochemical value comparison between TW-DM and MWDM groups showed that magnesium hydrocarbonate usage in diabetic rats did not significantly reduce glycaemia although the average glycaemic values were lower in the group treated with magnesium hydrocarbonate. Regarding the electrolyte values, a statistically significant decrease was observed for sodium, potassium and phosphate in the MW-DM group. The MW-DM group also showed a significant increase in iron value compared to TW-DM group. Conclusion: Subchronic intake of magnesium hydrocarbonate-rich mineral water, as a form of magnesium supplementation, did not cause a significant improvement in glycaemia or normalisation of diabetes-induced dyslipidaemia. This study showed the reduction of fibrinogen value, thus indicating the possibility of usage of this form of magnesium supplementation in different pro-thrombogenic conditions.
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15
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Živanović J, Jarić I, Ajdžanović V, Miler M, Stanković S, Milošević V, Filipović B. Genistein regulates calcium and phosphate homeostasis without activation of MEK 1/2 signalling pathway in an animal model of the andropause. Ann Anat 2021; 239:151836. [PMID: 34563672 DOI: 10.1016/j.aanat.2021.151836] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 09/16/2021] [Accepted: 09/16/2021] [Indexed: 01/02/2023]
Abstract
Soy isoflavone genistein interplays with numerous physiological or pathophysiological processes during ageing. However, its protective role and underlying mechanisms of action in the regulation of calcium (Ca2+) and phosphate (Pi) homeostasis in an animal model of the andropause are yet to be fully clarified. Wistar male rats (16-month-old) were divided into sham-operated, orchidectomized, orchidectomized estradiol-treated (0.625 mg/kg b.m./day) and orchidectomized genistein-treated (30 mg/kg b.m./day) groups. Treatments were administered subcutaneously for 3 weeks, while the controls received vehicle alone. Estradiol treatment increased the expression level of fibroblast growth factor receptor (FGFR) and parathyroid hormone 1 receptor (PTH1R), and activated mitogen - activated protein kinase kinase 1/2 (MEK 1/2) signaling pathway in the kidneys. Genistein application induced a prominent gene and protein expression of Klotho and downregulated the expression of FGFR and PTH1R in the kidney of andropausal rats. Activation of protein kinase B (Akt) signalling pathway was observed, while MEK 1/2 signaling pathway wasn't altered after genistein treatment. The increase of 25 (OH) vitamin D in the serum and decrease in Ca2+ urine content was observed after genistein application. Our findings strongly suggest genistein as a potent biocompound with beneficial effects on the regulation of Ca2+ and Pi homeostasis, especially during aging process when the balance of mineral metabolism is impaired. These novel data provide closer insights into the physiological roles of genistein in the regulation of mineral homeostasis.
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Affiliation(s)
- Jasmina Živanović
- Department of Cytology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia.
| | - Ivana Jarić
- Department of Cytology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia; Animal Welfare Division, Vetsuisse, University of Bern, Bern, Switzerland
| | - Vladimir Ajdžanović
- Department of Cytology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Marko Miler
- Department of Cytology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Sanja Stanković
- Center for Medical Biochemistry, Clinical Centre of Serbia, Belgrade, Serbia
| | - Verica Milošević
- Department of Cytology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Branko Filipović
- Department of Cytology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
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Đurašević S, Ružičić A, Lakić I, Tosti T, Đurović S, Glumac S, Pavlović S, Borković-Mitić S, Grigorov I, Stanković S, Jasnić N, Đorđević J, Todorović Z. The Effects of a Meldonium Pre-Treatment on the Course of the Faecal-Induced Sepsis in Rats. Int J Mol Sci 2021; 22:ijms22189698. [PMID: 34575863 PMCID: PMC8464894 DOI: 10.3390/ijms22189698] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 08/29/2021] [Accepted: 09/01/2021] [Indexed: 12/29/2022] Open
Abstract
Sepsis is a life-threatening condition caused by the dysregulated and overwhelming response to infection, accompanied by an exaggerated pro-inflammatory state and lipid metabolism disturbance leading to sequential organ failure. Meldonium is an anti-ischemic and anti-inflammatory agent which negatively interferes with lipid metabolism by shifting energy production from fatty acid oxidation to glycolysis, as a less oxygen-demanding pathway. Thus, we investigated the effects of a four-week meldonium pre-treatment on faecal-induced sepsis in Sprague-Dawley male rats. Surprisingly, under septic conditions, meldonium increased animal mortality rate compared with the meldonium non-treated group. However, analysis of the tissue oxidative status did not provide support for the detrimental effects of meldonium, nor did the analysis of the tissue inflammatory status showing anti-inflammatory, anti-apoptotic, and anti-necrotic effects of meldonium. After performing tissue lipidomic analysis, we concluded that the potential cause of the meldonium harmful effect is to be found in the overall decreased lipid metabolism. The present study underlines the importance of uninterrupted energy production in sepsis, closely drawing attention to the possible harmful effects of lipid-mobilization impairment caused by certain therapeutics. This could lead to the much-needed revision of the existing guidelines in the clinical treatment of sepsis while paving the way for discovering new therapeutic approaches.
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Affiliation(s)
- Siniša Đurašević
- Faculty of Biology, University of Belgrade, 11000 Belgrade, Serbia; (A.R.); (I.L.); (N.J.); (J.Đ.)
- Correspondence: ; Tel.: +381-63-367108
| | - Aleksandra Ružičić
- Faculty of Biology, University of Belgrade, 11000 Belgrade, Serbia; (A.R.); (I.L.); (N.J.); (J.Đ.)
| | - Iva Lakić
- Faculty of Biology, University of Belgrade, 11000 Belgrade, Serbia; (A.R.); (I.L.); (N.J.); (J.Đ.)
| | - Tomislav Tosti
- Faculty of Chemistry, University of Belgrade, 11000 Belgrade, Serbia;
| | - Saša Đurović
- Institute of General and Physical Chemistry, University of Belgrade, 11000 Belgrade, Serbia;
| | - Sofija Glumac
- School of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (S.G.); (Z.T.)
| | - Slađan Pavlović
- Institute for Biological Research “Siniša Stanković”—National Institute of Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia; (S.P.); (S.B.-M.); (I.G.)
| | - Slavica Borković-Mitić
- Institute for Biological Research “Siniša Stanković”—National Institute of Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia; (S.P.); (S.B.-M.); (I.G.)
| | - Ilijana Grigorov
- Institute for Biological Research “Siniša Stanković”—National Institute of Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia; (S.P.); (S.B.-M.); (I.G.)
| | - Sanja Stanković
- Centre for Medical Biochemistry, University Clinical Centre of Serbia, 11000 Belgrade, Serbia;
- Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia
| | - Nebojša Jasnić
- Faculty of Biology, University of Belgrade, 11000 Belgrade, Serbia; (A.R.); (I.L.); (N.J.); (J.Đ.)
| | - Jelena Đorđević
- Faculty of Biology, University of Belgrade, 11000 Belgrade, Serbia; (A.R.); (I.L.); (N.J.); (J.Đ.)
| | - Zoran Todorović
- School of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (S.G.); (Z.T.)
- University Medical Centre “Bežanijska kosa”, University of Belgrade, 11000 Belgrade, Serbia
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17
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Vukićević D, Rovčanin B, Gopčević K, Stanković S, Vučević D, Jorgačević B, Mladenović D, Vesković M, Samardžić J, Ješić R, Radosavljević T. The Role of MIF in Hepatic Function, Oxidative Stress, and Inflammation in Thioacetamide-induced Liver Injury in Mice: Protective Effects of Betaine. Curr Med Chem 2021; 28:3249-3268. [PMID: 33148149 DOI: 10.2174/0929867327666201104151025] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 09/25/2020] [Accepted: 09/27/2020] [Indexed: 02/08/2023]
Abstract
BACKGROUND Macrophage migration inhibitory factor (MIF) is a multipotent cytokine that contributes to the inflammatory response to chemical liver injury. This cytokine exhibits pro- and anti-inflammatory effects depending on the etiology and stage of liver disease. OBJECTIVE Our study aimed to investigate the role of MIF in oxidative stress and inflammation in the liver, and modulatory effects of betaine on MIF in thioacetamide (TAA)-induced chronic hepatic damage in mice. METHODS The experiment was performed on wild type and knockout MIF-/- C57BL/6 mice. They were divided into the following groups: control; Bet-group that received betaine (2% wt/v dissolved in drinking water); MIF-/- mice group; MIF-/-+Bet; TAA-group that received TAA (200 mg/kg b.w.), intraperitoneally, 3x/week/8 weeks); TAA+Bet; MIF-/-+TAA, and MIF-/-+TAA+Bet. In TAA- and Bet-treated groups, animals received the same doses. After eight weeks of treatment, blood samples were collected for biochemical analysis, and liver specimens were prepared for the assessment of parameters of oxidative stress and inflammation. RESULTS In MIF-/-mice, TAA reduced transaminases, γ-glutamyltranspeptidase, bilirubin, malondialdehyde (MDA), oxidative protein products (AOPP), total oxidant status (TOS), C-reactive protein (CRP), IL-6, IFN-γ, and increased thiols and total antioxidant status (TAS). Betaine attenuated the mechanism of MIF and mediated effects in TAA-induced liver injury, reducing transaminases, γ-glutamyltranspeptidase, bilirubin, MDA, AOPP, TOS, CRP, IL-6, IFN-g, and increasing thiols. CONCLUSION MIF is a mediator in hepatotoxic, pro-oxidative, and proinflammatoryeffects of TAA-induced liver injury. MIF-targeted therapy can potentially mitigate oxidative stress and inflammation in the liver, but the exact mechanism of its action requires further investigation. Betaine increases anti-oxidative defense and attenuates hepatotoxic effects of MIF, suggesting that betaine can be used for the prevention and treatment of liver damage.
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Affiliation(s)
- Dušan Vukićević
- Institute of Pathophysiology "Ljubodrag Buba Mihailovic", Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Branislav Rovčanin
- Center for Endocrine Surgery, Clinical Center of Serbia, Belgrade, Serbia
| | - Kristina Gopčević
- Institute of Chemistry in Medicine "Prof. Dr. Petar Matavulj", Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Sanja Stanković
- Centre of Medical Biochemistry, Clinical Centre of Serbia, Belgrade, Serbia
| | - Danijela Vučević
- Institute of Pathophysiology "Ljubodrag Buba Mihailovic", Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Bojan Jorgačević
- Institute of Pathophysiology "Ljubodrag Buba Mihailovic", Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Dušan Mladenović
- Institute of Pathophysiology "Ljubodrag Buba Mihailovic", Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Milena Vesković
- Institute of Pathophysiology "Ljubodrag Buba Mihailovic", Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Janko Samardžić
- Institute of Pharmacology, Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Belgrade, Dr. Subotica 9, 11000 Belgrade, Serbia
| | - Rada Ješić
- Institute of Digestive Diseases, Clinical Centre of Serbia, Belgrade, Serbia
| | - Tatjana Radosavljević
- Institute of Pathophysiology "Ljubodrag Buba Mihailovic", Faculty of Medicine, University of Belgrade, Belgrade, Serbia
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18
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Knežević M, Berić T, Buntić A, Delić D, Nikolić I, Stanković S, Stajković-Srbinović O. Potential of root nodule nonrhizobial endophytic bacteria for growth promotion of Lotus corniculatus L. and Dactylis glomerata L. J Appl Microbiol 2021; 131:2929-2940. [PMID: 34003543 DOI: 10.1111/jam.15152] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 05/11/2021] [Accepted: 05/11/2021] [Indexed: 11/29/2022]
Abstract
AIMS This research aimed to isolate and characterize nonrhizobial endophytic bacteria from root nodules of Medicago sativa L. and Lotus corniculatus L. with plant growth-promoting characteristics and to test its activity in a pot experiment with acid soil. METHODS AND RESULTS Out of 44 nonrhizobial isolates, the majority exhibited indole-3-acetic acid (IAA) production; 29 produced siderophores, few isolates performed phosphate solubilization and/or produced lytic enzymes, while 30% of isolates showed notable antifungal activity. The most promising strains were identified as members of Bacillus, Pseudomonas and Serratia genera, based on 16S rRNA. Bacillus megaterium DZK1BH exhibited the overall best attributes for plant growth promotion and positively influenced the growth of L. corniculatus and Dactylis glomerata. CONCLUSIONS Root nodule endophytic B. megaterium DZK1BH could potentially be used as a biofertilizer for growing L. corniculatus L. and D. glomerata L. in acid soils, while Bacillus mojavensis L3 is a candidate for further antifungal potential investigation. SIGNIFICANCE OF IMPACT OF THE STUDY The use of root nodule endophytic bacteria with PGP traits may find its future application in organic agriculture, as their utilization could decrease the use of chemical fertilizers and pesticides and simultaneously promote plant growth, especially in soils with low production quality.
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Affiliation(s)
- M Knežević
- Department of Microbiology, Institute of Soil Science, Belgrade, Serbia
| | - T Berić
- Faculty of Biology, University of Belgrade, Belgrade, Serbia
| | - A Buntić
- Department of Microbiology, Institute of Soil Science, Belgrade, Serbia
| | - D Delić
- Department of Microbiology, Institute of Soil Science, Belgrade, Serbia
| | - I Nikolić
- Faculty of Biology, University of Belgrade, Belgrade, Serbia
| | - S Stanković
- Faculty of Biology, University of Belgrade, Belgrade, Serbia
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19
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Gatarić N, Ilić A, Todorović D, Mutavdžin S, Jakovljević-Uzelac J, Stanković S, Đurić D. Functional dynamics of myocardial injury biomarkers production during acute isoprenaline treatment in rats. Medicinski podmladak 2021. [DOI: 10.5937/mp72-31512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
Abstract
Introduction: Isoprenaline or isoproterenol (1-(3,4-dihydroxyphenyl)-2-isopropylaminoethanolhydrochloride; ISO), a synthetic b-adrenergic agonist, can be used to establish myocardial ischemia, cardiotoxicity, necrosis and/or an experimental model of infarction in rats. Aim: Determination of the dynamics of myocardial injury biomarkers production of aspartate transaminase (AST), lactate dehydrogenase (LDH), creatine kinase (CK), and high-sensitive troponin T (hsTnT), with changes on electrocardiogram (ECG) parameters during the subcutaneous aplication of ISO in male Wistar rats. Material and methods: All animals (n = 23) were divided into two groups: control group (n = 11) treated with a saline solution, during two consecutive days (0,2 ml/kg b.m. daily, sc); and the ISO group (n = 12) treated with isoprenaline, during two consecutive days (85 mg/kg b.m. daily, sc). Blood was drawn from the rat tail vein in both groups, in order to determine serum activity levels of myocardial injury biomarkers, and an ECG (n = 6) was registered prior to the application, as well as 48h following the first dose of of saline solution or isoprenaline. Results: In comparison to the control group, in which no significant enzyme activities elevation (p > 0.05) nor ECG changes were registered, ISO group presented a significant rise of two clinically significant biomarkers of acute myocardial injury/myocardial infarction (AMI), CK (p = 0.05) and hsTnT (p < 0.01), as well as an ST segment elevation, with a patognomonic ECG change. Conclusion: Obtained results support previous studies, proving that isoprenaline represents an adequate experimental model for myocardial injury/AMI induction, and a "golden standard" for evaluating potential cardioprotective effects of pharmacological and non-pharmacological therapeutic modalities, with the ultimate goal of lowering the degree of lesions and improving post-infarction myocardium function.
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20
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Mlakar V, Marc J, Manolopoulos VG, Cascorbi I, Stanković S, Llerena A, Simmaco M, Visvikis-Siest S, Amstutz U, Sipeky C, Meyer UA, Meier-Abt P, van Schaik RH, Ansari M. 4th ESPT summer school: precision medicine and personalised health. Pharmacogenomics 2020; 20:471-474. [PMID: 31124416 DOI: 10.2217/pgs-2019-0008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In September 2018, the European Society of Pharmacogenomics and Personalised Therapy (ESPT), with the support of the Swiss Personalized Health Network (SPHN), organized its 4th biennial summer school, entitled 'Precision Medicine and Personalised Health' (Campus Biotech, Geneva, Switzerland; www.esptsummerschool.eu/ ). The school's comprehensive and innovative educational program aimed to address the fundamentals of pharmacogenomics, the latest knowledge on established and new concepts in the field of precision medicine, as well as its advanced clinical applications in personalized health. The school consisted of 31 lectures, eight interactive workshops, visits to genome center and poster presentations, involving 40 speakers from distinguished international faculties. The meeting was a resounding success by generating informal environments between more than 80 participants from 26 different countries.
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Affiliation(s)
- Vid Mlakar
- CANSEARCH Research Laboratory, Department of Paediatrics, Faculty of Medicine, Geneva University, 1205 Geneva, Switzerland
| | - Janja Marc
- Department of Clinical Chemistry, Faculty of Pharmacy, University of Ljubljana, 1000 Ljubljana, Slovenia
| | - Vangelis G Manolopoulos
- Laboratory of Pharmacology, Medical School, Democritus University of Thrace, 68100 Alexandroupolis, Greece
| | - Ingolf Cascorbi
- Institute of Experimental & Clinical Pharmacology, University Hospital Schleswig-Holstein Campus Kiel, 24105 Kiel, Germany
| | - Sanja Stanković
- Center for Medical Biochemistry, Clinical Center of Serbia, 11000 Beograd, Serbia
| | - Adrian Llerena
- CICAB Clinical Research Center, Extremadura University Hospital and Medical School, 06006 Badajoz, Spain
| | - Maurizio Simmaco
- Second Faculty of Medicine, St Andrea Hospital, Sapienza University of Rome, 00189 Rome, Italy
| | | | - Ursula Amstutz
- University Institute of Clinical Chemistry, Inselspital, Bern University Hospital, University of Bern, INO-F, CH-3010 Bern, Switzerland
| | - Csilla Sipeky
- Institute of Biomedicine, University of Turku, 20520 Turku, Finland
| | - Urs A Meyer
- Biozentrum, University of Basel, 4056 Basel, Switzerland
| | - Peter Meier-Abt
- Swiss Academy of Medical Sciences and Swiss Personalized Health Network, 3001 Berne, Switzerland
| | - Ron H van Schaik
- Department of Clinical Chemistry, Erasmus MC University Medical Hospital, 3015CN Rotterdam, The Netherlands
| | - Marc Ansari
- CANSEARCH Research Laboratory, Department of Paediatrics, Faculty of Medicine, Geneva University, 1205 Geneva, Switzerland.,Oncology and Haematology Unit, Department of Paediatrics, Geneva University Hospital, 1211 Geneva, Switzerland
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21
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Stanković S, Glišić S, Alavanatić D. Retraction of: The Effect of a Gender Difference in the Apolipoprotein E Gene DNA Polymorphism on Serum Lipid Levels in a Serbian Healthy Population. Clin Chem Lab Med 2020; 58:e94. [PMID: 31730520 DOI: 10.1515/cclm-2019-8899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Sanja Stanković
- Department of Medical Biochemistry, University School of Pharmacy, Belgrade, Yugoslavia
| | - Sanja Glišić
- Laboratory for Radiobiology and Molecular Genetics, Institute of Nuclear Sciences "Vinca", Belgrade, Yugoslavia
| | - Dragan Alavanatić
- "Vinca" Institute of Nuclear Sciences, Laboratory for Radiobiology and Molecular Genetics, P.O. Box 522, YU-11001 Belgrade, Yugoslavia
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22
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Janakiev T, Dimkić I, Bojić S, Fira D, Stanković S, Berić T. Bacterial communities of plum phyllosphere and characterization of indigenous antagonistic Bacillus thuringiensis R3/3 isolate. J Appl Microbiol 2019; 128:528-543. [PMID: 31606926 DOI: 10.1111/jam.14488] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 09/30/2019] [Accepted: 10/08/2019] [Indexed: 12/01/2022]
Abstract
AIMS The characterization of bacterial communities diversity on four local plum cultivars in two phenological stages using culture-dependent and culture-independent methods and screening among culturable plum community for indigenous bacteria active against phytopathogens. METHODS AND RESULTS The bacterial communities associated with leaves and fruits of four local Serbian plum cultivars (Požegača, Ranka, Čačanska Lepotica and Čačanska Rodna) were investigated in two phenological stages during early (May) and late (July) fruit maturation. Metagenomic approach revealed Methylobacterium, Sphingomonas and Hymenobacter as dominant genera. The most frequently isolated representatives with cultivable approach were pseudomonads with Pseudomonas syringae and Pseudomonas graminis, the most likely resident species of plum community. Antagonistic Bacillus thuringiensis R3/3 isolate from plum phyllosphere had ability to produce exoenzymes, reduce the growth of phytopathogenic bacteria in co-culture environment and show quorum quenching activity. CONCLUSIONS Plum cultivar and growth season contribute to the structure of the bacterial community associated with plum. Plum phyllosphere is good source of antagonists effective against phytopathogens. SIGNIFICANCE AND IMPACT OF STUDY Knowledge of bacterial communities on plum will have an impact on studies related to phyllosphere ecology and biocontrol. The indigenous antagonistic isolate, B. thuringiensis R3/3, from plum could be further investigated for its potential use in biological control of plum diseases.
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Affiliation(s)
- T Janakiev
- University of Belgrade - Faculty of Biology, Belgrade, Serbia
| | - I Dimkić
- University of Belgrade - Faculty of Biology, Belgrade, Serbia
| | - S Bojić
- University of Belgrade - Faculty of Biology, Belgrade, Serbia
| | - D Fira
- University of Belgrade - Faculty of Biology, Belgrade, Serbia
| | - S Stanković
- University of Belgrade - Faculty of Biology, Belgrade, Serbia
| | - T Berić
- University of Belgrade - Faculty of Biology, Belgrade, Serbia
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23
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Bogdanović J, Ašanin M, Krljanac G, Lalić NM, Jotić A, Stanković S, Rajković N, Stošić L, Rasulić I, Milin J, Popović D, Bogdanović L, Lalić K. Impact of acute hyperglycemia on layer-specific left ventricular strain in asymptomatic diabetic patients: an analysis based on two-dimensional speckle tracking echocardiography. Cardiovasc Diabetol 2019; 18:68. [PMID: 31159858 PMCID: PMC6545629 DOI: 10.1186/s12933-019-0876-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 05/28/2019] [Indexed: 02/20/2023] Open
Abstract
BACKGROUND Hyperglycemia has detrimental effect on ischemic myocardium, but the impact of acute hyperglycemia on the myocardium in asymptomatic diabetic patients has not been fully elucidated. Thus, this follow-up study was aimed to investigate the effects and reversibility of acute hyperglycemia on regional contractile function of left ventricle (LV) in diabetic patients without cardiovascular disease. METHODS The two-dimensional speckle tracking echocardiography (2D-STE), including multilayer strain analysis, was used for evaluation of global and regional LV function in asymptomatic, normotensive patients with uncomplicated diabetes, with acute hyperglycemia ( ≥ 11.1 mmol/l) (Group A, n = 67), or with optimal metabolic control (fasting plasma glucose < 7 mmol/l and HbA1c < 7%) (Group B, n = 20), while 20 healthy individuals served as controls (Group C). In group A, after 72 h of i.v. continuous insulin treatment (at the time euglycemia was achieved) (second examination) and after 3 months following acute hyperglycemia (third examination) 2D-STE was repeated. RESULTS Global longitudinal strain (GLS) (- 19.6 ± 0.4%) in Group A was significantly lower in comparison to both groups B (- 21.3 ± 0.4%; p < 0.05) and C (- 21.9 ± 0.4%; p < 0.01) at baseline, while we could not detect the differences between groups B and C. Peak systolic longitudinal endocardial (Endo), mid-myocardial (Mid) and epicardial (Epi) layer strain were significantly lower in group A at baseline compared to both groups B and C. Deterioration in peak systolic circumferential strain was observed at basal LV level, in all three layers (Endo, Mid and Epi) and in mid-cavity LV level in Epi layer in group A in comparison to group C. Moreover, in group A, after euglycemia was achieved (at second and third examination) GLS, as well as peak longitudinal and circumferential strain remain the same. CONCLUSION Acute hyperglycemia in asymptomatic diabetic patients has significant negative effects on systolic LV myocardial mechanics primarily by reducing GLS and multilayer peak systolic longitudinal and circumferential strain which was not reversible after three months of good glycemic control.
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Affiliation(s)
- Jelena Bogdanović
- Clinic for Endocrinology, Diabetes and Metabolic Diseases, Clinical Center of Serbia, dr Subotića 13, Belgrade, 11000, Serbia
| | - Milika Ašanin
- Faculty of Medicine, University of Belgrade, dr Subotića 8, Belgrade, 11000, Serbia.,Clinic for Cardiology, Clinical Center of Serbia, Pasterova 2, Belgrade, 11000, Serbia
| | - Gordana Krljanac
- Faculty of Medicine, University of Belgrade, dr Subotića 8, Belgrade, 11000, Serbia.,Clinic for Cardiology, Clinical Center of Serbia, Pasterova 2, Belgrade, 11000, Serbia
| | - Nebojša M Lalić
- Clinic for Endocrinology, Diabetes and Metabolic Diseases, Clinical Center of Serbia, dr Subotića 13, Belgrade, 11000, Serbia.,Faculty of Medicine, University of Belgrade, dr Subotića 8, Belgrade, 11000, Serbia
| | - Aleksandra Jotić
- Clinic for Endocrinology, Diabetes and Metabolic Diseases, Clinical Center of Serbia, dr Subotića 13, Belgrade, 11000, Serbia.,Faculty of Medicine, University of Belgrade, dr Subotića 8, Belgrade, 11000, Serbia
| | - Sanja Stanković
- Center for Medical Biochemistry, Clinical Center of Serbia, Pasterova 2, Belgrade, 11000, Serbia
| | - Nataša Rajković
- Clinic for Endocrinology, Diabetes and Metabolic Diseases, Clinical Center of Serbia, dr Subotića 13, Belgrade, 11000, Serbia.,Faculty of Medicine, University of Belgrade, dr Subotića 8, Belgrade, 11000, Serbia
| | - Ljubica Stošić
- Clinic for Endocrinology, Diabetes and Metabolic Diseases, Clinical Center of Serbia, dr Subotića 13, Belgrade, 11000, Serbia.,Faculty of Medicine, University of Belgrade, dr Subotića 8, Belgrade, 11000, Serbia
| | - Iva Rasulić
- Clinic for Endocrinology, Diabetes and Metabolic Diseases, Clinical Center of Serbia, dr Subotića 13, Belgrade, 11000, Serbia
| | - Jelena Milin
- Faculty of Medicine, University of Belgrade, dr Subotića 8, Belgrade, 11000, Serbia.,Institute for Medical Statistics and Informatics, dr Subotića 15, Belgrade, 11000, Serbia
| | - Dragana Popović
- Clinic for Endocrinology, Diabetes and Metabolic Diseases, Clinical Center of Serbia, dr Subotića 13, Belgrade, 11000, Serbia
| | - Ljiljana Bogdanović
- Faculty of Medicine, University of Belgrade, dr Subotića 8, Belgrade, 11000, Serbia.,Institute for Pathology, dr Subotića 1, Belgrade, 11000, Serbia
| | - Katarina Lalić
- Clinic for Endocrinology, Diabetes and Metabolic Diseases, Clinical Center of Serbia, dr Subotića 13, Belgrade, 11000, Serbia. .,Faculty of Medicine, University of Belgrade, dr Subotića 8, Belgrade, 11000, Serbia.
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24
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Nikolić I, Berić T, Dimkić I, Popović T, Lozo J, Fira D, Stanković S. Biological control of Pseudomonas syringae pv. aptata on sugar beet with Bacillus pumilus SS-10.7 and Bacillus amyloliquefaciens (SS-12.6 and SS-38.4) strains. J Appl Microbiol 2018; 126:165-176. [PMID: 30117660 DOI: 10.1111/jam.14070] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 08/06/2018] [Accepted: 08/13/2018] [Indexed: 12/20/2022]
Abstract
AIM Assessment of biological control of Pseudomonas syringae pv. aptata using crude lipopeptide extracts (CLEs) of two Bacillus amyloliquefaciens strains (SS-12.6 and SS-38.4) and one Bacillus pumilus strain (SS-10.7). METHODS AND RESULTS The minimum inhibitory concentration (MIC) of CLEs and their combinations against the pathogen and potential interaction between the extracts were determined in vitro. The most effective antibacterial activity was achieved with the CLE from B. amyloliquefaciens SS-12.6, with an MIC value of 0·63 mg ml-1 . Interactions between CLE combinations were mostly indifferent. The biocontrol potential of CLEs, mixtures of CLEs, and cell culture of B. amyloliquefaciens SS-12.6 was tested on sugar beet plants inoculated with P. syringae pv. aptata P53. The best result in inhibiting the appearance of tissue necrosis (up to 92%) was achieved with B. amyloliquefaciens SS-12.6 cell culture. CONCLUSION This work demonstrated significant biocontrol potential of the CLE and cell culture of B. amyloliquefaciens SS-12.6 which successfully suppress leaf spot disease severity on sugar beet plants. SIGNIFICANCE AND IMPACT OF THE STUDY The findings of biocontrol of sugar beet emerging pathogen will contribute to growers in terms of alternative disease control management. This study represents first assessment of biological control of P. syringae pv. aptata.
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Affiliation(s)
- I Nikolić
- Faculty of Biology, University of Belgrade, Belgrade, Serbia
| | - T Berić
- Faculty of Biology, University of Belgrade, Belgrade, Serbia
| | - I Dimkić
- Faculty of Biology, University of Belgrade, Belgrade, Serbia
| | - T Popović
- Institute for Plant Protection and Environment, Belgrade, Serbia
| | - J Lozo
- Faculty of Biology, University of Belgrade, Belgrade, Serbia
| | - D Fira
- Faculty of Biology, University of Belgrade, Belgrade, Serbia
| | - S Stanković
- Faculty of Biology, University of Belgrade, Belgrade, Serbia
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25
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Micić D, Lalić N, Djukić V, Stanković S, Trajković G, Oluić B, Polovina S. Influence of IL-6, TNF-α and Hs-CRP on Insulin Sensitivity in Patients after Laparoscopic Cholecystectomy or Open Hernia Repair. J Med Biochem 2018; 37:328-335. [PMID: 30598630 PMCID: PMC6298464 DOI: 10.1515/jomb-2017-0043] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 08/12/2017] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND The aim of this study was to investigate the influence of IL-6, TNF-α and hs-CRP on insulin sensitivity during postoperative follow-up in patients with laparoscopic cholecystectomy (LC) or open hernia repair (OHR). METHODS 65 patients were studied: after laparoscopic cholecystectomy (LC; n=40) or open hernia repair (OHR; n=25). Glucose, insulin, hs-CRP, IL-6 and TNF-a were determined at day 0 (before the operation) and at days 1, 3 and 7 (after the operation). RESULTS There were no difference between LC and OHR groups concerning age, BMI, glucose, insulin, hs-CRP, IL-6 and TNF-α at day 0. hs-CRP increased at day 1, 3 and 7 vs. day 0 (p<0.0005), without difference between groups (p=0.561). IL-6 increased at day 1 and day 3 vs. day 0 (p<0.005). IL-6 was higher at day 1 in OHR group in comparison with LC group (p=0.044). There were no differences in TNF-a levels between LC and OHR groups (p=0.056). There was increase of HOMA-IR at day 1, 3 and 7 vs. day 0 (p<0.0005) in both groups. Significantly higher increase of HOMA-IR was in OHR group compared with LC group at day 1 (p=0.045). There was a positive correlation between hs-CRP and HOMA-IR (r=0.46; p=0.025) and between IL-6 and HOMA-IR at day 1 in OHR group (r=0.44; p=0.030). CONCLUSIONS Significantly higher HOMA-IR was found in OHR group compared with LC. Positive correlation between hs-CRP and IL-6 with HOMA-IR in OHR group at day 1, indicate possible influence of this mediators on impairment of insulin sensitivity.
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Affiliation(s)
- Dušan Micić
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia
- Clinic for Emergency Surgery, Emergency Center, Clinical Center of Serbia, Belgrade, Serbia
| | - Nebojša Lalić
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia
- Clinic for Endocrinology, Diabetes and Diseases of Metabolism, Clinical Center of Serbia, Belgrade, Serbia
| | - Vladimir Djukić
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia
- Clinic for Emergency Surgery, Emergency Center, Clinical Center of Serbia, Belgrade, Serbia
| | - Sanja Stanković
- Center for Medical Biochemistry, Clinical Center of Serbia, Belgrade, Serbia
| | - Goran Trajković
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia
- Department for Medical Statistics and Informatics, Faculty of Medicine, University ofBelgrade, Serbia
| | - Branislav Oluić
- Clinic for Emergency Surgery, Emergency Center, Clinical Center of Serbia, Belgrade, Serbia
| | - Snežana Polovina
- Clinic for Endocrinology, Diabetes and Diseases of Metabolism, Clinical Center of Serbia, Belgrade, Serbia
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26
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Kostić S, Mićovic Ž, Andrejević L, Cvetković S, Stamenković A, Stanković S, Obrenović R, Labudović-Borović M, Hrnčić D, Jakovljević V, Djurić D. The effects of L-cysteine and N-acetyl-L-cysteine on homocysteine metabolism and haemostatic markers, and on cardiac and aortic histology in subchronically methionine-treated Wistar male rats. Mol Cell Biochem 2018; 451:43-54. [PMID: 29936684 DOI: 10.1007/s11010-018-3391-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Accepted: 06/17/2018] [Indexed: 11/24/2022]
Abstract
Methionine is the precursor of homocysteine, a sulfur amino acid intermediate in the methylation and transsulfuration pathways; methionine-rich diets were used to induce hyperhomocysteinemia, and cardiovascular pathology was often observed. Other sulfur amino acids interfere with this metabolism, i.e., L-cysteine (Cys) and N-aceyl-L-cysteine (NAC), and probably also affect cardiovascular system. Their effects are controversial due to their ability to act both as anti- or pro-oxidant. Thus, this study aimed to elucidate their influence on levels of homocysteine, folate and vitamin B12, levels of different haemostatic parameters (fibrinogen, D-dimer, vWF Ag, vWF Ac) in rat serum or plasma as well as their effects on cardiac and aortic tissue histology in subchronically methionine-treated rats. Wistar albino rats were divided into 4 experimental groups: (a) control group (0.9% sodium chloride 0.1-0.2 mL/day) (n = 10) (K); (b) DL-methionine (0.8 mmol/kg/bw/day) (n = 10) (M); (c) DL-methionine (0.8 mmol/kg/bw/day) + L-cysteine (7 mg/kg/bw/day) (n = 8) (C); (d) DL-methionine (0.8 mmol/ kg/bw/day) + N-acetyl-L-cysteine (50 mg/kg/bw/day) (n = 8) (N). All substances were applied i.p., treatment duration 3 weeks. Lower levels of vitamin B12 in all the groups were found. Folate was reduced only in N group. Decreased fibrinogen was noted in C and N groups and increased D-dimer only in C. VWF activity was reduced in M and C groups. Deleterious effects in heart were observed, especially after Cys and NAC application. Aortic tissue remained unchanged. In conclusion, it could be said that sulfur amino acids have the significant impact on cardiovascular system in subchronically methionine-treated rats. This study points out the relevance of their complex interactions and deleterious effects mediated by either direct influence or procoagulant properties.
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Affiliation(s)
- Sanja Kostić
- Faculty of Medicine, Institute of Medical Physiology "Richard Burian", University of Belgrade, Visegradska 26/II, Belgrade, 11000, Serbia
| | - Žarko Mićovic
- Military Health Department, Ministry of Defence, Belgrade, Serbia
| | - Lazar Andrejević
- Clinic of Gynecology and Obstetrics, Faculty of Medical Science University of Pristina - Kosovska Mitrovica, Kosovska Mitrovica, Serbia
| | - Saša Cvetković
- Clinic of Gynecology and Obstetrics, Faculty of Medical Science University of Pristina - Kosovska Mitrovica, Kosovska Mitrovica, Serbia
| | - Aleksandra Stamenković
- St. Boniface Hospital Research Center, Institute of Cardiovascular Sciences, University of Manitoba, Winnipeg, Canada
| | - Sanja Stanković
- Centre of Medical Biochemistry, Clinical Centre of Serbia, Belgrade, Serbia
| | - Radmila Obrenović
- Centre of Medical Biochemistry, Clinical Centre of Serbia, Belgrade, Serbia
| | - Milica Labudović-Borović
- Faculty of Medicine, Institute of Histology and Embryology "Aleksandar Dj. Kostic", University of Belgrade, Belgrade, Serbia
| | - Dragan Hrnčić
- Faculty of Medicine, Institute of Medical Physiology "Richard Burian", University of Belgrade, Visegradska 26/II, Belgrade, 11000, Serbia
| | - Vladimir Jakovljević
- Department of Physiology, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia.,Department of Human Pathology, 1st Moscow State Medical University IM Sechenov, Moscow, Russian Federation
| | - Dragan Djurić
- Faculty of Medicine, Institute of Medical Physiology "Richard Burian", University of Belgrade, Visegradska 26/II, Belgrade, 11000, Serbia.
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Đukanović L, Račić M, Marić I, Maksimović Z, Simić J, Aleksić J, Stanković S, Pejović V, Ležaić V. How common is Balkan endemic nephropathy among immigrants in endemic regions? Int Urol Nephrol 2018; 50:1301-1309. [DOI: 10.1007/s11255-018-1889-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2018] [Accepted: 05/06/2018] [Indexed: 10/16/2022]
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Micić D, Stanković S, Lalić N, Đukić V, Polovina S. Prognostic Value of Preoperative Neutrophil-to-lymphocyte Ratio for Prediction of Severe Cholecystitis. J Med Biochem 2018; 37:121-127. [PMID: 30581347 PMCID: PMC6294096 DOI: 10.1515/jomb-2017-0063] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Accepted: 12/26/2017] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND The predictive value of preoperative neutrophil-to-lymphocyte ratio (NLR) in patients with cholecystitis has not been established. The aim of this study was to investigate preoperative NLR in patients with cholecystitis and to identify a relevant NLR value that discriminates between simple and severe cholecystitis. METHODS This study included 136 patients who under went laparoscopic cholecystectomy due to cholecystitis. The Receiver Operating Characteristic (ROC) analysis was performed to identify the most useful NLR cut-off value in relation to the severity of cholecystitis. The patients were di vided into two groups according to the cut-off NLR value: high NLR group (≥4.18, n=23) and low NLR group (<4.18, n=113). Severe cholecystitis was defined as a state which includes inflammation, empyema, gangrene, perforation of gallbladder, adhesions or difficulty in dissecting Calot's triangle. RESULTS In the high NLR group, severe cholecystitis (p<0.0001) and higher C-reactive protein level (CRP) and white blood cells count (WBC) (p<0.0001) were significantly more frequent. There was no difference in homeostatic model assessment-insulin resistance index (HOMA-IR) between both groups before the operation (p<0.634). The incidence of severe cholecystitis was 16.9%. The NLR of 4.18 could predict severe cholecystitis with 78.3% sensitivity and 74.3% specificity. Spearman's correlation revealed significant association between the preoperative NLR and HOMA-IR on day 1, (r=0.254, p=0.030) and between preoperative NLR and CRP on day 1 (ρ=0.355; p<0.0001). CONCLUSIONS NLR ≥4.18 was significantly associated with severe cholecystitis. The preoperative NLR in patients under going cholecystectomy due to cholecystitis could be a useful surrogate marker of severe cholecystitis.
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Affiliation(s)
- Dušan Micić
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia
- Clinic for Emergency Surgery, Emergency Center, Clinical Center of Serbia, Belgrade, Serbia
| | - Sanja Stanković
- Center for Medical Biochemistry, Clinical Center of Serbia, Belgrade, Serbia
| | - Nebojša Lalić
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia
- Clinic for Endocrinology, Diabetes and Diseases of Metabolism, Clinical Center of Serbia, Belgrade, Serbia
| | - Vladimir Đukić
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia
- Clinic for Emergency Surgery, Emergency Center, Clinical Center of Serbia, Belgrade, Serbia
| | - Snežana Polovina
- Clinic for Endocrinology, Diabetes and Diseases of Metabolism, Clinical Center of Serbia, Belgrade, Serbia
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Arsenijević V, Šijački A, Marjanović I, Micić D, Nikolić V, Veljković A, Popović P, Stanković S, Jeremić V. Erythropoietin in the Evaluation of Treatment Outcomes in Patients with Polytrauma. Acta Clin Croat 2017; 56:581-587. [PMID: 29590709 DOI: 10.20471/acc.2017.56.04.01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Polytrauma is a term describing patients with injuries involving multiple body regions that compromises function of the body and/or organ involved. The aim of the study was to evaluate the potential role of erythropoietin in predicting poorer outcome in trauma patients. This prospective study included 86 patients admitted to the Emergency Center of Serbia due to polytrauma assigned according to Injury Severity Score (ISS). The patients were further evaluated using the Acute Physiology and Chronic Health Evaluation II and Sequential Organ Failure Assessment scores and erythropoietin levels. There was a significant difference among erythropoietin levels at admission, after 48 and 72 hours, and on day 7 of hospital stay, with significantly higher levels in patients with ISS values 49-75. Based on the results, ROC curves were used to identify cut-off levels to predict ISS score with critical clinical course. It was concluded that erythropoietin could be a good marker of injury severity. Further research has to be performed to determine the cut-off values of erythropoietin that are significant for injury severity.
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Affiliation(s)
| | - Ana Šijački
- Clinical Department of Emergency Surgery, Emergency Center, Clinical Centre of Serbia, Belgrade, Serbia.,School of Medicine, University of Belgrade, Belgrade, Serbia
| | - Ivan Marjanović
- Clinical Department of Emergency Surgery, Emergency Center, Clinical Centre of Serbia, Belgrade, Serbia
| | - Dušan Micić
- Clinical Department of Emergency Surgery, Emergency Center, Clinical Centre of Serbia, Belgrade, Serbia
| | | | | | - Pavle Popović
- Clinical Department of Emergency Surgery, Emergency Center, Clinical Centre of Serbia, Belgrade, Serbia
| | - Sanja Stanković
- Center of Medical Biochemistry, Clinical Centre of Serbia, Belgrade, Serbia
| | - Vasilije Jeremić
- Clinical Department of Emergency Surgery, Emergency Center, Clinical Centre of Serbia, Belgrade, Serbia.,School of Medicine, University of Belgrade, Belgrade, Serbia
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Stefanović B, Đurić O, Stanković S, Mijatović S, Doklestić K, Stefanović B, Jovanović B, Marjanović N, Kalezić N. Elevated Serum Protein S100B and Neuron Specific Enolase Values as Predictors of Early Neurological Outcome After Traumatic Brain Injury. J Med Biochem 2017; 36:314-321. [PMID: 30581328 PMCID: PMC6294083 DOI: 10.1515/jomb-2017-0018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2017] [Accepted: 03/25/2017] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND The objective of our study was to determine the serum concentrations of protein S100B and neuron specific enolase (NSE) as well as their ability and accuracy in the prediction of early neurological outcome after a traumatic brain injury. METHODS A total of 130 polytraumatized patients with the associated traumatic brain injuries were included in this prospective cohort study. Serum protein S100B and NSE levels were measured at 6, 24, 48 and 72 hours after the injury. Early neurological outcome was scored by Glasgow Outcome Scale (GOS) on day 14 after the brain injury. RESULTS The protein S100B concentrations were maximal at 6 hours after the injury, which was followed by an abrupt fall, and subsequently slower release in the following two days with continual and significantly increased values (p<0.0001) in patients with poor outcome. Secondary increase in protein S100B at 72 hours was recorded in patients with lethal outcome (GOS 1). Dynamics of NSE changes was characterized by a secondary increase in concentrations at 72 hours after the injury in patients with poor outcome. CONCLUSION Both markers have good predictive ability for poor neurological outcome, although NSE provides better discriminative potential at 72 hours after the brain injury, while protein S100B has better discriminative potential for mortality prediction.
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Affiliation(s)
- Branislava Stefanović
- School of Medicine, University of Belgrade, Belgrade, Serbia
- Department of Anesthesiology, Emergency Center, Clinical Center of Serbia, Belgrade, Serbia
| | - Olivera Đurić
- School of Medicine, University of Belgrade, Belgrade, Serbia
- Institute for Epidemiology, School of Medicine, University of Belgrade, Belgrade, Serbia
| | - Sanja Stanković
- Center for Medical Biochemistry, Clinical Center of Serbia, Belgrade, Serbia
| | - Srđan Mijatović
- School of Medicine, University of Belgrade, Belgrade, Serbia
- Clinic for Emergency Surgery, Emergency Center, Clinical Center of Serbia, Belgrade, Serbia
| | - Krstina Doklestić
- School of Medicine, University of Belgrade, Belgrade, Serbia
- Clinic for Emergency Surgery, Emergency Center, Clinical Center of Serbia, Belgrade, Serbia
| | - Branislav Stefanović
- School of Medicine, University of Belgrade, Belgrade, Serbia
- Clinic for Emergency Surgery, Emergency Center, Clinical Center of Serbia, Belgrade, Serbia
| | - Bojan Jovanović
- School of Medicine, University of Belgrade, Belgrade, Serbia
- Department of Anesthesiology, Emergency Center, Clinical Center of Serbia, Belgrade, Serbia
| | - Nataša Marjanović
- School of Medicine, University of Belgrade, Belgrade, Serbia
- Department of Anesthesiology, Clinic for Digestive Surgery, Clinical Center of Serbia, Belgrade, Serbia
| | - Nevena Kalezić
- School of Medicine, University of Belgrade, Belgrade, Serbia
- Department of Anesthesiology, Clinic for Endocrine Surgery, Clinical Center of Serbia, Belgrade, Serbia
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Antić-Stanković J, Stanković S. THE COMPLEMENT SYSTEM: PATHWAYS OF ACTIVATIONS AND FUNCTION. AMM 2017. [DOI: 10.5633/amm.2017.0108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Kuzmanović M, Božanić DK, Milivojević D, Ćulafić DM, Stanković S, Ballesteros C, Gonzalez-Benito J. Sodium-alginate biopolymer as a template for the synthesis of nontoxic red emitting Mn2+-doped CdS nanoparticles. RSC Adv 2017. [DOI: 10.1039/c7ra11011a] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Structural and optical characteristics of manganese doped cadmium sulfide nanoparticles prepared by in situ chemical synthesis using biocompatible Na-alginate biopolymer as a template is reported.
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Affiliation(s)
- M. Kuzmanović
- Department of Material Science and Engineering
- Faculty of Engineering and Architecture
- Ghent University
- Belgium
- Department of Materials Science and Engineering and Chemical Engineering
| | - D. K. Božanić
- Department of Materials Science and Engineering and Chemical Engineering
- IQMAAB
- Universidad Carlos III de Madrid
- 28911 Leganés (Madrid)
- Spain
| | - D. Milivojević
- University of Belgrade
- Vinča Institute of Nuclear Sciences
- 11001 Belgrade
- Serbia
| | - D. Mitić Ćulafić
- University of Belgrade
- Faculty of Biology
- Center for Genotoxicology and Ecogenotoxicology
- 11001 Belgrade
- Serbia
| | - S. Stanković
- University of Belgrade
- Faculty of Biology
- Center for Genotoxicology and Ecogenotoxicology
- 11001 Belgrade
- Serbia
| | - C. Ballesteros
- Department of Physics
- Universidad Carlos III de Madrid
- Avenida de la Universidad 30
- 28911 Leganés (Madrid)
- Spain
| | - J. Gonzalez-Benito
- Department of Materials Science and Engineering and Chemical Engineering
- IQMAAB
- Universidad Carlos III de Madrid
- 28911 Leganés (Madrid)
- Spain
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Hu Y, Thomson DJ, Khokhar AZ, Stanković S, Mitchell CJ, Gardes FY, Penades JS, Mashanovich GZ, Reed GT. Angled multimode interferometer for bidirectional wavelength division (de)multiplexing. R Soc Open Sci 2015; 2:150270. [PMID: 26587242 PMCID: PMC4632514 DOI: 10.1098/rsos.150270] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Accepted: 09/28/2015] [Indexed: 06/05/2023]
Abstract
We have demonstrated a bidirectional wavelength division (de)multiplexer (WDM) on the silicon-on-insulator platform using two 4-channel angled multimode interferometers (AMMIs) sharing the same multimode interference waveguide. An excellent match of the peak transmission wavelength of each channel between the two AMMIs was achieved. The input and output access waveguides were arranged in a configuration such that the propagation of light of one AMMI in the multimode interference waveguide suffered minimal perturbation by the input and output waveguides of the other AMMI. This type of device is ideal for the WDM system for datacom or telecom applications, e.g. an integrated optical transceiver, where the transmission wavelengths are required to match with the receiving wavelengths. The device also benefits from simple fabrication (as only a single lithography and etching step is required), improved convenience for the transceiver layout design, a reduction in tuning power and circuitry and efficient use of layout space. A low insertion loss of 3-4 dB, and low crosstalk of -15 to -20 dB, was achieved.
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Affiliation(s)
| | | | | | | | | | | | | | | | - G. T. Reed
- Author for correspondence: G. T. Reed e-mail:
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Lozo J, Berić T, Terzić-Vidojević A, Stanković S, Fira D, Stanisavljević L. Microbiota associated with pollen, bee bread, larvae and adults of solitary bee Osmia cornuta (Hymenoptera: Megachilidae). Bull Entomol Res 2015; 105:470-6. [PMID: 25895542 DOI: 10.1017/s0007485315000292] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Using cultivation-dependant method, we isolated 184 strains from fresh and old bee bread, pollen, larvae and adults of solitary bee Osmia cornuta. The 16S rDNA sequencing of 79 selected isolates gave the final species-specific identification of strains. Phylogenetic analysis indicated that microbiota isolated from five different sources were represented with 29 species within three different phyla, Firmicutes with 25 species, Actinobacteria with only one species and Proteobacteria with three species of Enterobacteriaceae. Bacterial biodiversity presented with Shannon-Wiener index (H') was highest in the alimentary tract of adults and old bee bread (H' = 2.43 and H' = 2.53, respectively) and in the same time no dominance of any species was scored. On the contrary, results obtained for Simpson index (D) showed that in pollen samples the dominant species was Pantoea agglomerans (D = 0.42) while in fresh bee bread that was Staphylococcus sp. (D = 0.27). We assume that microbial diversity detected in the tested samples of solitary bee O. cornuta probably come from environment.
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Affiliation(s)
- J Lozo
- Faculty of Biology,University of Belgrade,Studentski trg 16,11000 Belgrade,Serbia
| | - T Berić
- Faculty of Biology,University of Belgrade,Studentski trg 16,11000 Belgrade,Serbia
| | - A Terzić-Vidojević
- University of Belgrade - Institute of Molecular Genetics and Genetic Engineering,Vojvode Stepe 444a,P.O. Box 23,11010 Belgrade,Serbia
| | - S Stanković
- Faculty of Biology,University of Belgrade,Studentski trg 16,11000 Belgrade,Serbia
| | - D Fira
- Faculty of Biology,University of Belgrade,Studentski trg 16,11000 Belgrade,Serbia
| | - L Stanisavljević
- Faculty of Biology,University of Belgrade,Studentski trg 16,11000 Belgrade,Serbia
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Ćurčić M, Tanasković S, Stanković S, Janković S, Antunović M, Djordjević S, Kilibarda V, Vučnić S, Antonijević B. Relationship of hepatotoxicity and the target tissue dose of decabrominated diphenyl ether in subacutely exposed Wistar rats. VOJNOSANIT PREGL 2015; 72:405-413. [PMID: 26165047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023] Open
Abstract
BACKGROUND/AIM Based on numerous studies in animals, the most prominent toxic effects of decabrominated diphenyl ether (BDE-209) are observed in the liver, thyroid hormone homeostasis, reproductive and nervous systems. BDE-209 exhibits its toxic effects partly through the aryl hydrocarbon (Ah) receptor and consequent induction of hepatic microsomal enzymes. The aim of this study was to assess the hepatotoxic effect vs target tissue dose of BDE-209 in the subacutely orally exposed Wistar rats. METHODS Effects were examined on male Wistar rats, weighing 200-240 g, exposed to doses of 1;000, 2,000 or 4,000 mg BDE-209/kg body weight (bw)/day by gavage during 28 days. Animals were treated according to the decision of the Ethics Committee of the Military Medical Academy, No 9667-1/2011. Evaluation of the hepatotoxic effect was based on: relative liver weight water and food intake, biochemical parameters of liver function [aspartate amino transferase (AST), alanine aminotransferase (ALT), alkaline phosphatase (ALP), gama glutamyl transferase (γ-GT)], and oxidative stress parameters in liver homogenates [malondialdehiyde (MDA), superoxide dismutase (SOD), -SH] and morphological and pathohistological changes in the liver. For the assessment of internal dose-response relationship, lower confidence limit of Benchmark dose (BMDL) of 5% or 10% i.e. BMDL5 or BMDL10, were calculated using PROAST software. RESULTS After the application of 1,000,2,000 or 4,000 mg BDE-209/kg bw/day, the concentrations of BDE-209 measured in liver were 0.269, 0.569 and 0.859 mg/kg of liver wet weight, (ww) respectively. Internal doses correlated with external (r = 0.972; p < 0.05) according to equation: internal dose (mg BDE-209/kg of liver ww) = 0.0002 x external dose (mg/kg bw/day) + 0.0622. Hepatotoxicity was demonstrated based on significant increase in AST and γ-GT activities and the degree of histopathological changes. The lowest BMDLs of 0.07228 mg BDE-209 /kg of liver ww, correlating to external dose of 39 mg/kg/day, indicated the increase of AST activity as the most sensitive biomarker of BDE-209 hepatotoxicity in subacutely exposed rats. CONCLUSION The results of the present work add up to the issue ofBDE-209 toxicity profile with a focus on relationship between internal dose and hepatotoxicity. Critical internal dose for the effect on AST of 0.07 mg/kg of liver ww, corresponding to external dose of 39 mg/kg/ day, is the lowest dose ever observed among the studies on BDE-209 hepatotoxicity. For the persistent substances with low absorption rate such as BDE-209, critical effect based on internal dose in majority of cases is considered as more precisely deined than the effect established based on external dose, particularly.
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Kostić M, Dražic S, Popović Z, Stanković S, Sivčev I, Živanović T. Developmental and Feeding Alternations inLeptinotarsa DecemlineataSay. (Coleoptera: Hrysomelidae) Caused bySalvia OfficinalisL. (Lamiaceae) Essential Oil. BIOTECHNOL BIOTEC EQ 2014. [DOI: 10.1080/13102818.2007.10817488] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Gregorić P, Doklestić K, Stanković S, Sijacki A, Karamarković A, Radenković D, Ivancević N, Bajec D. Interleukin-12 as a predictor of outcome in patients with severe acute pancreatitis. Hepatogastroenterology 2014; 61:208-211. [PMID: 24895822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
BACKGROUND/AIMS The aim of this study was to determine the role of serum Interleukin-12 level as early marker of severity of the SAP and correlation between IL12, SIRS score, APACHE II and Ranson score in prediction of illness severity as well as of outcome of SAP. METHODOLOGY We evaluated a total of 234 patients with first onset of SAP, appears in last 24 hours, admitted in surgical Intensive care unit (ICU). Severe Acute Pancreatitis was diagnosed with an APACHE II score of 8 or higher, and/or a Ranson score of 3 or higher, and/or Balthazar scores of 5 or higher. Serum IL-12 concentrations were measured with a commercially aviable IL-12 kit, on admission and days 3, 7, and 14. RESULTS IL-12 concentration was significantly higher at 24h compared with IL-12 levels at admission (P = 0.010) and after 72h (P = 0.005). IL-12 concentrations significantly correlated with IL-6 concentrations (r = 0.209, P < 0.001), IL-8 concentrations (r = 0.527, P < 0.001), IL-10 concentrations (r = 0.552, P < 0.001), interpheron-gamma (r = 0.740, P < 0.001), TNF-alpha (r = 0.088, P < 0.05), C-reactive protein (r = -0.097, P < 0.001), in-hospital death (r = -0.171, P < 0.001), APACHE II score (r = 0.140, P < 0.001), and Ranson score (r = -0.319, P < 0.001). CONCLUSIONS The serum values of the IL-12 can be used as an early marker of severity and course of SAP.
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Berić T, Stanković S, Draganić V, Kojić M, Lozo J, Fira D. Novel antilisterial bacteriocin licheniocin 50.2 from Bacillus licheniformis VPS50.2 isolated from soil sample. J Appl Microbiol 2013; 116:502-10. [PMID: 24238327 DOI: 10.1111/jam.12393] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2013] [Revised: 11/08/2013] [Accepted: 11/08/2013] [Indexed: 11/28/2022]
Abstract
AIM To isolate and characterize bacteriocin, licheniocin 50.2, from soil bacteria identified as Bacillus licheniformis. METHODS AND RESULTS The strain B. licheniformis VPS50.2 was identified as bacteriocin producer, effective against Gram-positive bacteria, including Listeria monocytogenes, methicillin-resistant Staphylococcus aureus (MRSA) and β-haemolytic streptococci. The start of bacteriocin production coincides with the beginning of sporulation. Ammonium sulfate precipitation, chloroform extraction and ultrafiltration were used for bacteriocin purification. MALDI TOF/TOF mass spectrometry of purified sample detected the protein with molecular mass of 3253·209 Da. N-terminal sequencing recognized first 15 amino acids with the sequence: W E E Y N I I X Q L G N K G Q. We named the newly characterized bacteriocin as subclass II.3 bacteriocin, licheniocin 50·2. The bacteriocin activity was insensitive to lysozyme and proteinase K, heat stable after incubation at 100°C for 30 min and over wide range of pH (2-12). MICs of crude bacteriocin extract were determined for L. monocytogenes and MRSA. Time-kill study showed that licheniocin had bactericidal effect to L. monocytogenes. CONCLUSION A novel, thermostable, pH-tolerant bacteriocin active against Gram-positive bacteria was isolated. SIGNIFICANCE AND IMPACT OF THE STUDY Attributes of new, stable licheniocin 50.2 make it a promising agent for application as biopreservative in food industry.
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Affiliation(s)
- T Berić
- Faculty of Biology, University of Belgrade, Belgrade, Serbia
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Stanković S, Ilić N, Ilić T. 29.Subclinical cervical spondylotic myelopathy – Early detection of long tract pathways involvement. Clin Neurophysiol 2012. [DOI: 10.1016/j.clinph.2011.11.069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Vasiljević B, Maglajlić-Djukić S, Gojnić M, Stanković S. The role of oxidative stress in perinatal hypoxic-ischemic brain injury. SRP ARK CELOK LEK 2012; 140:35-41. [PMID: 22462345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023] Open
Abstract
INTRODUCTION The pathogenesis of perinatal hypoxic-ischemic brain damage is highly complex. OBJECTIVE The aim of this study was to assess the role of oxidative stress in hypoxic-ischemic brain injury and subsequent abnormal neurological outcome in infants with perinatal hypoxic-ischemic encephalopathy (HIE). We estimated perinatal oxidative brain damage measuring activity of glutathione peroxidase (GPX) in cerebrospinal fluid (CSF) as an indirect biomarker of free radical production during cerebral hypoxia-ischemia in correlation with the level of intracellular enzyme neuron specific enolase (NSE) in CSF as a biomarker of extend of brain injury. METHODS Ninety neonates (>32 GA) with perinatal HIE were enrolled prospectively. HIE was categorized into three stages according Sarnat and Sarnat clinical scoring system and changes seen on amplitude integrated EEG. CSF for GPX analysis and NSE analysis was taken in the first 72 hours of life. Neurodevelopment outcome was assessed at 12 months of corrected gestational age. RESULTS GPX activity in CSF was in good relation with clinical stage of HIE (p < 0.0001) and GA (p < 0.0001) and significantly corresponded with subsequent neurodevelopment outcome (p < 0.001). GPX activity in CSF showed a strong correlation with NSE levels in CSF (p < 0.001) as the biomarker of extent of brain injury. CONCLUSION Our results suggest that oxidative stress might be important contributing factor in perinatal hypoxic-ischemic brain damage, particularly in preterm neonates.
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Affiliation(s)
- Brankica Vasiljević
- Clinic of Gynecology and Obstetrics, Clinical Centre of Serbia Visgradska 26, 11000 Belgrade, Serbia.
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Colak E, Kosanović-Jaković N, Zorić L, Radosavljević A, Stanković S, Majkić-Singh N. The association of lipoprotein parameters and C-reactive protein in patients with age-related macular degeneration. Ophthalmic Res 2011; 46:125-32. [PMID: 21336002 DOI: 10.1159/000323815] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2010] [Accepted: 12/23/2010] [Indexed: 11/19/2022]
Abstract
BACKGROUND Age-related macular degeneration (AMD) is the most common cause of visual impairment in individuals over 50 years of age, with the prevalence of 0.05% before the age of 50 rising to 30% after 74 years of age. An elevated concentration of plasma lipoproteins is considered to be one of the risk factors of AMD development. The aim of our study was to analyze the concentration of serum lipoproteins - total cholesterol, high-density lipoprotein (HDL), low-density lipoprotein (LDL), non-LDL cholesterol and triglycerides - as well as apolipoproteins - apoA1, apoB and Lp(a) - along with C-reactive protein (CRP) in patients with AMD in order to explore the possible association of lipid and inflammatory parameters with the pathogenesis of AMD. MATERIAL AND METHODS In the cross-sectional study in the University clinical setting, 79 patients with AMD, aged 71.47 ± 7.02 years, and 84 aged-matched control subjects were included. The patients underwent complete ophthalmological examination including visual acuity assessment, color fundus photography and fluorescein angiography. RESULTS Statistical processing data revealed significantly higher total (p = 0.0002), LDL (p = 0.023), non-HDL cholesterol (p = 0.0014) and CRP (p = 0.049) values in AMD patients compared to control subjects. CONCLUSIONS Based on the obtained results, it may be concluded that lipid status disorder and inflammation could play an important role in the development of AMD in elderly people.
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Affiliation(s)
- Emina Colak
- Institute of Medical Biochemistry, Clinical Center of Serbia and Pharmaceutical Faculty, University of Belgrade, Belgrade, Serbia.
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Klisurić O, Stanković S, Lazar D, Sakac M, Penov-Gasi K, Djurendić E, Zobel D, Wagner A. Hydrogen bonding and structure-activity analysis of some antiandrogens. Acta Crystallogr A 2006. [DOI: 10.1107/s0108767306094104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Colak E, Majkić-Singh N, Stanković S, Srecković-Dimitrijević V, Djordjević PB, Lalić K, Lalić N. Parameters of antioxidative defense in type 2 diabetic patients with cardiovascular complications. Ann Med 2005; 37:613-20. [PMID: 16338763 DOI: 10.1080/07853890500330193] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
OBJECTIVE Diabetes-associated oxidative stress is a consequence of both increased production of free radicals and reduced capacity of antioxidative defense. Prolonged hyperglycemia is the major factor in the pathogenesis of atherosclerosis in diabetes which can lead to cardiovascular complications. The aim of this study was to test the parameters of antioxidative defense in type 2 diabetic patients. METHODS A total of 117 type 2 diabetics with and without cardiovascular complications were examined in order to find out the influence of hyperglycemia, type and duration of complications and duration of diabetes on the extent of disorder of antioxidative parameter values: superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), glutathione reductase (GR) and total antioxidant status (TAS). RESULTS Compared to healthy control subjects, type 2 diabetic patients with cardiovascular complications (CVC) had significantly lower SOD (P<0.0001), GSH-Px (P<0.0001), GR ( P = 0.0002) and TAS values (P<0.0001). In type 2 diabetic subjects with CVC, males had significantly lower SOD (778.7+/-103.2 U/gHb, P<0.01) and GR activities (52.2+/-8.9 U/L, P<0.001) compared to females (839.3+/-94.9 U/gHb; 58.5+/-9.1 U/L). Significant and positive correlation was found between glucose levels and SOD (r = 0.375 for P<0.05) and GSH-Px (r = 0.384, P<0.05 ) activity in the group of complications-free diabetics, while significant negative correlation between glucose and GSH-Px values (r = -0.382, P<0.05) was found in the group of type 2 diabetics with coronary artery disease (CAD) and hypertension (HTA) and with CAD and acute myocardial infarction (AMI) (r = -0.860 P<0.05), and highly negative correlation between glucose and SOD levels (r = -0.590, P<0.05) in the group of diabetic subjects with CAD, AMI and HTA. Likewise, there was highly significant negative correlation of SOD (r = -0.949, P<0.05) and TAS (r = -0.393 for P = 0.038) with duration of diabetes in the group of diabetics with CAD and HTA. CONCLUSION Our results confirm the hypothesis that there is reduced antioxidative defense in type 2 diabetics with prominent cardiovascular complications, which negatively correlates with glucose concentrations and duration of diabetes and cardiovascular complications.
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Affiliation(s)
- Emina Colak
- Institute of Medical Biochemistry, Clinical Centre of Serbia, Visegradska 26, 1000 Belgrade, Serbia and Montenegro.
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Dragović S, Nedić O, Stanković S, Bacić G. Radiocesium accumulation in mosses from highlands of Serbia and Montenegro: chemical and physiological aspects. J Environ Radioact 2004; 77:381-388. [PMID: 15381328 DOI: 10.1016/j.jenvrad.2004.04.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2003] [Revised: 04/04/2004] [Accepted: 04/26/2004] [Indexed: 05/24/2023]
Abstract
The aim of this work was (i) to determine the activity levels of 137Cs in mosses from highland ecosystems of Serbia and Montenegro, (ii) to find out if radiocesium is associated with essential biomacromolecules, and (iii) to investigate 137Cs distribution among intracellular compartments. It was found that biomolecules of mosses do not bind significant amounts of radiocesium (2.3-3.3% of the absorbed 137Cs), a behavior that was independent of the moss species. Cellular fractionation of mosses showed that membranes are the primary 137Cs-binding sites at the cellular level. They contained 26.1-43.1% of the initial radiocesium activity. It seems that 137Cs-binding molecules in different mosses are of similar chemical nature, and their distribution between various cellular compartments is not species specific.
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Affiliation(s)
- S Dragović
- Institute for the Application of Nuclear Energy (INEP), Banatska 31b, 11080 Belgrade, Yugoslavia.
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Jovanović ZB, Ilić M, Zidverc-Trajković J, Pavlović AM, Mijajlović M, Sterić N, Stanković S, Beslać-Bumbasirević L, Kostić VS. Plasminogen activator inhibitor-1 in the evolution of stroke. SRP ARK CELOK LEK 2004; 132:143-7. [PMID: 15493583 DOI: 10.2298/sarh0406143j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Fibrinolytic activity in the acute stroke was examined by monitoring the level of plasminogen activator inhibitor-1 (PAI-1), as one of the indicators of fibrinolytic activity. Given the role of PAI-1 in the processes of atherogenesis and thrombogenesis, plasma PAI-1 level was measured in 59 patients (up to 50 years of age) with atherothrombotic stroke (verified by computed tomography scanning or magnetic resonance imaging of brain) in the period from 12 to 24 hours (I analysis) and 30 days after the onset of stroke (II analysis); then, it was correlated with plasma PAI-1 level in the control group (57 healthy subjects), which was 2.86?0.70 U/ml. It was found that PAI-1 level was significantly higher in the acute stroke (I analysis: PAI-1 =4.10?1.40 U/ml, p<0.001; II analysis: PAI-1 =3.64+0.90 U/ml, p<0.001), while fibrinolytic activity was lower, especially on the first day from the stroke that was not completely increased even after 30 days. There was no difference in PAI-1 levels between the subgroups of patients with infarction and lacunar cerebral ischemia (p>0.05), as well as between females and males (p>0.05). Along with significantly increased fibrinogen level (4.65?1 g/l, in the controls - 2.83?0.64 g/l, p<0.001), significantly higher triglycerides (2.04?0.76 mmol/l, in the controls - 1.38+0.54 mmol/l, p<0.001) and lipoproteins(a) (0.405?0.29 g/l, in the controls -0.172?0.14 g/l, p<0.001) were found, correlating with higher plasma PAI-1 level in these patients. The increased plasma level of PAI-1 pointed to possibility of decreased fibrinolytic activity in pathogenesis of ischemie stroke, as well as, risk of reinsult, which had been the greatest after the onset of stroke and declined gradually within several weeks.
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Stanković S. [X-rays in molecular biophysics: structure-activity relationships and activity of steroid hormones]. Med Pregl 2001; 54:413-21. [PMID: 11876002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
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Stanković S, Djurović I, Pitas I. Watermarking in the space/spatial-frequency domain using two-dimensional Radon-Wigner distribution. IEEE Trans Image Process 2001; 10:650-658. [PMID: 18249654 DOI: 10.1109/83.913599] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
A two-dimensional (2-D) signal with a variable spatial frequency is proposed as a watermark in the spatial domain. This watermark is characterized by a linear frequency change. It can be efficiently detected by using 2-D space/spatial-frequency distributions. The projections of the 2-D Wigner distribution--the 2-D Radon-Wigner distribution, are used in order to emphasize the watermark detection process. The watermark robustness with respect to some very important image processing attacks, such as for example, the translation, rotation, cropping, JPEG compression, and filtering, is demonstrated and tested by using Stirmark 3.1.
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Affiliation(s)
- S Stanković
- Electrical Engineering Department, University of Montenegro, Podgorica, Montenegro, Yugoslavia.
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Stanković S, Glisic S, Alavanatić D. The effect of a gender difference in the apolipoprotein E gene DNA polymorphism on serum lipid levels in a Serbian healthy population. Clin Chem Lab Med 2000; 38:539-44. [PMID: 10987203 DOI: 10.1515/cclm.2000.079] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
To date, no data have been available on relationship between apolipoprotein E polymorphism and lipid levels in Serbian populations. Blood samples were obtained from 591 healthy normal individuals (193 women and 398 men). A 244 bp sequence of the apolipoprotein E gene including the two polymorphic sites was amplified by polymerase chain reaction. After digestion with Hhal, DNA fragments were visualized by microplate array diagonal gel electrophoresis. In men, levels of both total and low-density lipoprotein cholesterol among the three apolipoprotein E genotype groups differed significantly (p <0.05). The epsilon2 allele was associated with lower concentrations of both total and low-density lipoprotein cholesterol, where the epsilon4 allele had the opposite effects. No significant effects of apolipoprotein E polymorphism on serum lipid levels were observed in women. The presented data could be taken into consideration in any future disease risk evaluation in this population.
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Affiliation(s)
- S Stanković
- Department of Medical Biochemistry, University School of Pharmacy, Belgrade, Yugoslavia
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