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Butorac D, Ćelap I, Kačkov Maslać S, Miletić T, Tomašković AH, Turčić P, Rašić D, Stojanović I, Rajković MG. Paraoxonase and arylesterase activity of paraoxonase 1 and oxidative stress parameters in cervical intraepithelial neoplasia. Biochem Med (Zagreb) 2024; 34:030701. [PMID: 38125616 PMCID: PMC10731734 DOI: 10.11613/bm.2024.010701] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 09/27/2023] [Indexed: 12/23/2023] Open
Abstract
Introduction Paraoxonase 1 (PON1) is the enzyme that removes carcinogenic radicals from lipids. The aim of the study was to investigate the differences in PON1 activity and oxidation stress parameters between patients with cervical intraepithelial neoplasia (CIN) and healthy controls. Materials and methods The study included 65 women with CIN and 109 healthy women. Lipid parameters were determined on Cobas Integra 400 plus (Roche, Mannheim, Germany). Tiols and reduced glutathione (GSH) were determined spectrophotometric using Eliman reagent. Activity of PON1 was assessed with two substrates, paraoxon and phenylacetate by spectrophotometric method. Malondialdehyde (MDA) was determined by high performance liquid chromatography (Shimadzu Corporation, Kyoto, Japan). Mann-Whitney-test, t-test, χ2-test, correlation and logistic regression was used in statistical analysis. P < 0.05 was considered statistically significant. Results The basal (P = 0.929) and NaCl-stimulated (P = 0.985) PON1 activity and activities standardised on the concentration of high-density lipoprotein (HDL; P = 0.076; P = 0.065, respectively) and apolipoprotein AI (apo AI; P = 0.444; P = 0.499, respectively) as well as PON1 phenotypes (P = 0.842) did not differ significantly between the groups. The PON1 arylesterase activity (53±19 kU/L vs. 77±17 kU/L; P < 0.001) and HDL-standardized activity (37 (28-44) kU/mmol vs. 43 (37-50) kU/mmol; P < 0.001) and apoAI (29±11 kU/g vs. 44±11 kU/g; P < 0.001) was significantly reduced in the CIN group. The concentration of the thiol groups was similar (P = 0.519), of MDA was lower (0.39 (0.27-0.55) µmol/L vs. 0.76 (0.57-1.15) µmol/L; P < 0.001) and of GSH was higher (112.0 (66.0-129.6) µg/mL vs. 53.4 (34.8-134.4) µg/mL; P < 0.001) in the CIN group. Conclusion Reduced PON1 arylesterase activity, lower MDA and higher GSH concentration were observed in CIN patients.
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Affiliation(s)
- Dražan Butorac
- Clinic of Gynecology and Obstetrics, Sestre milosrdnice University Hospital Center, Zagreb, Croatia
| | - Ivana Ćelap
- Department of Clinical Chemistry, Sestre milosrdnice University Hospital Center, Zagreb, Croatia
- Department of Medical biochemistry and Hematology, Faculty of Pharmacy and Biochemistry, University of Zagreb, Zagreb, Croatia
| | | | | | - Andrea Hulina Tomašković
- Department of Medical biochemistry and Hematology, Faculty of Pharmacy and Biochemistry, University of Zagreb, Zagreb, Croatia
| | - Petra Turčić
- Department of Pharmacology, Faculty of Pharmacy and Biochemistry, University of Zagreb, Zagreb, Croatia
| | - Dubravka Rašić
- Unit of Toxicology, Institute for Medical Research and Occupational Health, Zagreb, Croatia
| | - Ivana Stojanović
- Clinic of Gynecology and Obstetrics, Sestre milosrdnice University Hospital Center, Zagreb, Croatia
| | - Marija Grdić Rajković
- Department of Medical biochemistry and Hematology, Faculty of Pharmacy and Biochemistry, University of Zagreb, Zagreb, Croatia
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Stojanović J, Savić-Zdravković D, Jovanović B, Vitorović J, Bašić J, Stojanović I, Popović AŽ, Duran H, Kolarević MK, Milošević Đ. Histopathology of chironomids exposed to fly ash and microplastics as a new biomarker of ecotoxicological assessment. Sci Total Environ 2023; 903:166042. [PMID: 37543338 DOI: 10.1016/j.scitotenv.2023.166042] [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] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 08/02/2023] [Accepted: 08/02/2023] [Indexed: 08/07/2023]
Abstract
In the last few decades, industrial pollution has gained extensive attention in terms of its effect on the aquatic environment. This imposes the need to develop sensitive biomarkers for early detection of pollutant toxicity in ecotoxicological assessment. The advantages of histopathological biomarkers are many, including quick reaction to the presence of contaminants, and the small number of individuals needed for efficient analysis. The present study analyzed the negative effect of lignite coal fly ash (LCFA) and microplastic particles (MPs) on Chironomus riparius, a suggested model organism by the Organization for Economic Cooperation and Development (OECD). This study aimed to perform histological analyses of larval tissues and target potential changes in treated groups that could serve as promising histopathological biomarkers of the contaminant's negative effects. Following that, other known sensitive sub-organismal biomarkers were analyzed and paired with the histopathological ones. Histological analysis of larvae showed a significantly decreased length of microvilli in midgut regions II and III in both treatments. Treatments with MPs affected oxidative stress parameters: thiobarbituric acid reactive substances (TBARS), advanced oxidation protein products (AOPP), superoxide dismutase (SOD), and hemoglobin levels, while LCFA significantly affected all tested sub-organismal biomarkers (DNA damage, levels of AOPP, SOD, and hemoglobin), except catalase (CAT) and TBARS. When observing histological slides, a significant shortage of brush border length in the posterior parts of the midgut was detected in all treatments. In the case of LCFA, the appearance of intensive vacuolization of digestive cells with inclusions resembling apoptotic bodies, in mentioned regions was also detected. This study demonstrated high sensitivity of brush border length to the MPs and LCFA exposure, complementary to other tested sub-organismal biomarkers. Revealing the great potential of this histopathological biomarker in ecotoxicological studies contributes to the international standard ecotoxicology assessment of emerging pollutants.
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Affiliation(s)
- Jelena Stojanović
- Department of Biology and Ecology, Faculty of Sciences and Mathematics, University of Niš, Višegradska 33, Niš, Serbia.
| | - Dimitrija Savić-Zdravković
- Department of Biology and Ecology, Faculty of Sciences and Mathematics, University of Niš, Višegradska 33, Niš, Serbia
| | - Boris Jovanović
- Department of Natural Resource Ecology and Management, Iowa State University, Ames, IA, USA
| | - Jelena Vitorović
- Department of Biology and Ecology, Faculty of Sciences and Mathematics, University of Niš, Višegradska 33, Niš, Serbia
| | - Jelena Bašić
- Department of Biochemistry, Faculty of Medicine, University of Nis, Bulevar dr Zorana Đinđića 81, 18000 Nis, Serbia
| | - Ivana Stojanović
- Department of Biochemistry, Faculty of Medicine, University of Nis, Bulevar dr Zorana Đinđića 81, 18000 Nis, Serbia
| | - Andrea Žabar Popović
- Department of Biology and Ecology, Faculty of Sciences and Mathematics, University of Niš, Višegradska 33, Niš, Serbia
| | - Hatice Duran
- Department of Materials Science & Nanotechnology Engineering, TOBB University of Economics and Technology, Söğütözü Cad. 43, 06560 Ankara, Türkiye; UNAM - National Nanotechnology Research Center and Institute of Materials Science and Nanotechnology, Bilkent University, Ankara, Türkiye
| | - Margareta Kračun Kolarević
- Department of Hydroecology and water protection, Institute for Biological Research "Siniša Stanković", National Institute of the Republic of Serbia, University of Belgrade, Bulevar Despota Stefana 142, 11060 Belgrade, Serbia
| | - Đurađ Milošević
- Department of Biology and Ecology, Faculty of Sciences and Mathematics, University of Niš, Višegradska 33, Niš, Serbia
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Koprivica I, Stanisavljević S, Mićanović D, Jevtić B, Stojanović I, Miljković Đ. ILC3: a case of conflicted identity. Front Immunol 2023; 14:1271699. [PMID: 37915588 PMCID: PMC10616800 DOI: 10.3389/fimmu.2023.1271699] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 10/02/2023] [Indexed: 11/03/2023] Open
Abstract
Innate lymphoid cells type 3 (ILC3s) are the first line sentinels at the mucous tissues, where they contribute to the homeostatic immune response in a major way. Also, they have been increasingly appreciated as important modulators of chronic inflammatory and autoimmune responses, both locally and systemically. The proper identification of ILC3 is of utmost importance for meaningful studies on their role in immunity. Flow cytometry is the method of choice for the detection and characterization of ILC3. However, the analysis of ILC3-related papers shows inconsistency in ILC3 phenotypic definition, as different inclusion and exclusion markers are used for their identification. Here, we present these discrepancies in the phenotypic characterization of human and mouse ILC3s. We discuss the pros and cons of using various markers for ILC3 identification. Furthermore, we consider the possibilities for the efficient isolation and propagation of ILC3 from different organs and tissues for in-vitro and in-vivo studies. This paper calls upon uniformity in ILC3 definition, isolation, and propagation for the increased possibility of confluent interpretation of ILC3's role in immunity.
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Affiliation(s)
| | | | | | | | | | - Đorđe Miljković
- Department of Immunology, Institute for Biological Research “Siniša Stanković” - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
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Saksida T, Paunović V, Koprivica I, Mićanović D, Jevtić B, Jonić N, Stojanović I, Pejnović N. Development of Type 1 Diabetes in Mice Is Associated with a Decrease in IL-2-Producing ILC3 and FoxP3 + Treg in the Small Intestine. Molecules 2023; 28:molecules28083366. [PMID: 37110604 PMCID: PMC10141349 DOI: 10.3390/molecules28083366] [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: 02/09/2023] [Revised: 03/20/2023] [Accepted: 04/03/2023] [Indexed: 04/29/2023] Open
Abstract
Recent data indicate the link between the number and function of T regulatory cells (Treg) in the gut immune tissue and initiation and development of autoimmunity associated with type 1 diabetes (T1D). Since type 3 innate lymphoid cells (ILC3) in the small intestine are essential for maintaining FoxP3+ Treg and there are no data about the possible role of ILC3 in T1D pathogenesis, the aim of this study was to explore ILC3-Treg link during the development of T1D. Mature diabetic NOD mice had lower frequencies of IL-2-producing ILC3 and Treg in small intestine lamina propria (SILP) compared to prediabetic NOD mice. Similarly, in multiple low doses of streptozotocin (MLDS)-induced T1D in C57BL/6 mice, hyperglycemic mice exhibited lower numbers of ILC3, IL-2+ ILC3 and Treg in SILP compared to healthy controls. To boost T1D severity, mice were treated with broad-spectrum antibiotics (ABX) for 14 days prior to T1D induction by MLDS. The higher incidence of T1D in ABX-treated mice was associated with significantly lower frequencies of IL-2+ ILC3 and FoxP3+ Treg in SILP compared with mice without ABX treatment. The obtained findings show that the lower proportions of IL-2-expressing ILC3 and FoxP3+ Treg in SILP coincided with diabetes progression and severity.
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Affiliation(s)
- Tamara Saksida
- Department of Immunology, Institute for Biological Research "Siniša Stanković"-National Institute of Republic of Serbia, University of Belgrade, Bulevar Despota Stefana 142, 11060 Belgrade, Serbia
| | - Verica Paunović
- Institute of Microbiology and Immunology, Faculty of Medicine, University of Belgrade, Pasterova 2, 11000 Belgrade, Serbia
| | - Ivan Koprivica
- Department of Immunology, Institute for Biological Research "Siniša Stanković"-National Institute of Republic of Serbia, University of Belgrade, Bulevar Despota Stefana 142, 11060 Belgrade, Serbia
| | - Dragica Mićanović
- Department of Immunology, Institute for Biological Research "Siniša Stanković"-National Institute of Republic of Serbia, University of Belgrade, Bulevar Despota Stefana 142, 11060 Belgrade, Serbia
| | - Bojan Jevtić
- Department of Immunology, Institute for Biological Research "Siniša Stanković"-National Institute of Republic of Serbia, University of Belgrade, Bulevar Despota Stefana 142, 11060 Belgrade, Serbia
| | - Natalija Jonić
- Department of Immunology, Institute for Biological Research "Siniša Stanković"-National Institute of Republic of Serbia, University of Belgrade, Bulevar Despota Stefana 142, 11060 Belgrade, Serbia
| | - Ivana Stojanović
- Department of Immunology, Institute for Biological Research "Siniša Stanković"-National Institute of Republic of Serbia, University of Belgrade, Bulevar Despota Stefana 142, 11060 Belgrade, Serbia
| | - Nada Pejnović
- Department of Immunology, Institute for Biological Research "Siniša Stanković"-National Institute of Republic of Serbia, University of Belgrade, Bulevar Despota Stefana 142, 11060 Belgrade, Serbia
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Janošević P, Stojanović S, Stojanović I, Janošević M, Najman S. Comparative In Vitro Biocompatibility Study of the Two Orthodontic Bonding Materials of Different Types. Polymers (Basel) 2022; 14:polym14224998. [PMID: 36433124 PMCID: PMC9698495 DOI: 10.3390/polym14224998] [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: 10/08/2022] [Revised: 11/09/2022] [Accepted: 11/12/2022] [Indexed: 11/19/2022] Open
Abstract
In the present study, the in vitro biocompatibility and cell response to two commonly used orthodontic bonding materials of different types, one self-curing and one light-curing, were examined and compared in indirect and direct cell culture systems. The study was conducted on fibroblasts and macrophages as in vitro models to study the biocompatibility of dental materials. Differences were found between the light- and self-curing material in cytotoxicity and effects on fibroblasts' proliferation in indirect cell culture systems as well as in macrophages response in vitro in both direct and indirect cell culture systems. Based on the obtained results, we can conclude that the self-curing material is generally more cytotoxic for fibroblasts compared to the light-curing, while macrophages' response to these materials was dependent on the macrophages' state and differed between the examined materials. This indicates that more attention should be paid when choosing and applying these materials in practice due to their toxicity to cells. Prior to their use, all aspects should be considered regarding the patient's conditions, associated problems, microenvironment in the oral cavity, etc. Further studies on in vivo models should be conducted to fully understand the potential long-term effects of the use of mentioned materials in orthodontics.
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Affiliation(s)
- Predrag Janošević
- Department of Orthodontics, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
| | - Sanja Stojanović
- Department of Biology and Human Genetics, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
- Department for Cell and Tissue Engineering, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
- Correspondence:
| | - Ivana Stojanović
- Department of Biochemistry, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
| | - Mirjana Janošević
- Department of Orthodontics, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
| | - Stevo Najman
- Department of Biology and Human Genetics, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
- Department for Cell and Tissue Engineering, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
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Milošević V, Malobabić M, Stojanović I, Bašić J. Importance of a functional measure in the evaluation of patients in a memory clinic: Validation of the Serbian version of the Amsterdam Instrumental Activities of Daily Living Questionnaire. Clin Neurol Neurosurg 2022; 214:107165. [DOI: 10.1016/j.clineuro.2022.107165] [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] [Received: 01/29/2021] [Revised: 01/11/2022] [Accepted: 02/01/2022] [Indexed: 11/03/2022]
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Koprivica I, Jonić N, Diamantis D, Gajić D, Saksida T, Pejnović N, Tzakos AG, Stojanović I. Phenethyl ester of rosmarinic acid attenuates autoimmune responses during type 1 diabetes development in mice. Life Sci 2022; 288:120184. [PMID: 34838848 DOI: 10.1016/j.lfs.2021.120184] [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] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/01/2021] [Accepted: 11/22/2021] [Indexed: 12/14/2022]
Abstract
AIMS Rosmarinic acid (RA) is a polyphenol that occurs in plants of the Lamiaceae family. Phenethyl ester of RA (PERA), a novel RA derivative, has been developed and evaluated in vivo in an animal model of type 1 diabetes (T1D). METHODS T1D was induced in male C57BL/6 mice using multiple low doses of streptozotocin (STZ) administered intraperitoneally for 5 consecutive days. Intraperitoneal administration of PERA (2.5 mg/kg bw) began from the first STZ injection and continued for 20 days. KEY FINDINGS PERA-treated mice exhibited lower incidence of T1D (monitored up to 38 days from the disease induction), and fluorescent histochemical analysis showed that their pancreatic islets expressed more insulin. PERA treatment significantly down-regulated the proportions of CD11b+ and CD11c+ myeloid cells in the immune cell infiltrates in the pancreatic islets early during T1D pathogenesis (on day 9 after T1D induction), while on day 15, PERA significantly reduced the proportions of CD11c+, CD8+, Th1 and Th17 cells. Simultaneously, it was found that the cells from the pancreatic infiltrates of PERA-treated mice produced significantly less reactive oxygen species than cells from the control group. SIGNIFICANCE These findings suggest that PERA efficiently prevented T1D development in mice. Interestingly, PERA attenuated the inflammatory process in the islets through temporally specific interference with the innate and adaptive immune response and therefore shows great promise for further clinical evaluation as a novel T1D therapeutic.
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Affiliation(s)
- Ivan Koprivica
- Institute for Biological Research "Siniša Stanković" National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Natalija Jonić
- Institute for Biological Research "Siniša Stanković" National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Dimitris Diamantis
- Section of Organic Chemistry & Biochemistry, Department of Chemistry, University of Ioannina, Ioannina, Greece
| | - Dragica Gajić
- Institute for Biological Research "Siniša Stanković" National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Tamara Saksida
- Institute for Biological Research "Siniša Stanković" National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Nada Pejnović
- Institute for Biological Research "Siniša Stanković" National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Andreas G Tzakos
- Section of Organic Chemistry & Biochemistry, Department of Chemistry, University of Ioannina, Ioannina, Greece
| | - Ivana Stojanović
- Institute for Biological Research "Siniša Stanković" National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia.
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Stojanović I, Saksida T, Miljković Đ, Pejnović N. Modulation of Intestinal ILC3 for the Treatment of Type 1 Diabetes. Front Immunol 2021; 12:653560. [PMID: 34149694 PMCID: PMC8209467 DOI: 10.3389/fimmu.2021.653560] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 05/18/2021] [Indexed: 11/22/2022] Open
Abstract
Gut-associated lymphoid tissue (GALT) is crucial for the maintenance of the intestinal homeostasis, but it is also the potential site of the activation of autoreactive cells and initiation/propagation of autoimmune diseases in the gut and in the distant organs. Type 3 innate lymphoid cells (ILC3) residing in the GALT integrate signals from food ingredients and gut microbiota metabolites in order to control local immunoreactivity. Notably, ILC3 secrete IL-17 and GM-CSF that activate immune cells in combating potentially pathogenic microorganisms. ILC3 also produce IL-22 that potentiates the strength and integrity of epithelial tight junctions, production of mucus and antimicrobial peptides thus enabling the proper function of the intestinal barrier. The newly discovered function of small intestine ILC3 is the secretion of IL-2 and the promotion of regulatory T cell (Treg) generation and function. Since the intestinal barrier dysfunction, together with the reduction in small intestine ILC3 and Treg numbers are associated with the pathogenesis of type 1 diabetes (T1D), the focus of this article is intestinal ILC3 modulation for the therapy of T1D. Of particular interest is free fatty acids receptor 2 (FFAR2), predominantly expressed on intestinal ILC3, that can be stimulated by available selective synthetic agonists. Thus, we propose that FFAR2-based interventions by boosting ILC3 beneficial functions may attenuate autoimmune response against pancreatic β cells during T1D. Also, it is our opinion that treatments based on ILC3 stimulation by functional foods can be used as prophylaxis in individuals that are genetically predisposed to develop T1D.
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Affiliation(s)
- Ivana Stojanović
- Department of Immunology, Institute for Biological Research "Siniša Stanković" - National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Tamara Saksida
- Department of Immunology, Institute for Biological Research "Siniša Stanković" - National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Đorđe Miljković
- Department of Immunology, Institute for Biological Research "Siniša Stanković" - National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Nada Pejnović
- Department of Immunology, Institute for Biological Research "Siniša Stanković" - National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
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Miljković Đ, Jevtić B, Stojanović I, Dimitrijević M. ILC3, a Central Innate Immune Component of the Gut-Brain Axis in Multiple Sclerosis. Front Immunol 2021; 12:657622. [PMID: 33912185 PMCID: PMC8071931 DOI: 10.3389/fimmu.2021.657622] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Accepted: 03/15/2021] [Indexed: 12/12/2022] Open
Abstract
Gut immune cells have been increasingly appreciated as important players in the central nervous system (CNS) autoimmunity in animal models of multiple sclerosis (MS). Among the gut immune cells, innate lymphoid cell type 3 (ILC3) is of special interest in MS research, as they represent the innate cell counterpart of the major pathogenic cell population in MS, i.e. T helper (Th)17 cells. Importantly, these cells have been shown to stimulate regulatory T cells (Treg) and to counteract pathogenic Th17 cells in animal models of autoimmune diseases. Besides, they are also well known for their ability to stabilize the intestinal barrier and to shape the immune response to the gut microbiota. Thus, proper maintenance of the intestinal barrier and the establishment of the regulatory milieu in the gut performed by ILC3 may prevent activation of CNS antigen-specific Th17 cells by the molecular mimicry. Recent findings on the role of ILC3 in the gut-CNS axis and their relevance for MS pathogenesis will be discussed in this paper. Possibilities of ILC3 functional modulation for the benefit of MS patients will be addressed, as well.
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Affiliation(s)
- Đorđe Miljković
- Department of Immunology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Bojan Jevtić
- Department of Immunology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Ivana Stojanović
- Department of Immunology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Mirjana Dimitrijević
- Department of Immunology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
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Saksida T, Jevtić B, Djedović N, Miljković Đ, Stojanović I. Redox Regulation of Tolerogenic Dendritic Cells and Regulatory T Cells in the Pathogenesis and Therapy of Autoimmunity. Antioxid Redox Signal 2021; 34:364-382. [PMID: 32458699 DOI: 10.1089/ars.2019.7999] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Significance: Autoimmune diseases are progressively affecting westernized societies, as the proportion of individuals suffering from autoimmunity is steadily increasing over the past decades. Understanding the role of reactive oxygen species (ROS) in modulation of the immune response in the pathogenesis of autoimmune disorders is of utmost importance. The focus of this review is the regulation of ROS production within tolerogenic dendritic cells (tolDCs) and regulatory T (Treg) cells that have the essential role in the prevention of autoimmune diseases and significant potency in their therapy. Recent Advances: It is now clear that ROS are extremely important for the proper function of both DC and T cells. Antigen processing/presentation and the ability of DC to activate T cells depend upon the ROS availability. Treg differentiation, suppressive function, and stability are profoundly influenced by ROS presence. Critical Issues: Although a plethora of results on the relation between ROS and immune cells exist, it remains unclear whether ROS modulation is a productive way for skewing T cells and DCs toward a tolerogenic phenotype. Also, the possibility of ROS modulation for enhancement of regulatory properties of DC and Treg during their preparation for use in cellular therapy has to be clarified. Future Directions: Studies of DC and T cell redox regulation should allow for the improvement of the therapy of autoimmune diseases. This could be achieved through the direct therapeutic application of ROS modulators in autoimmunity, or indirectly through ROS-dependent enhancement of tolDC and Treg preparation for cell-based immunotherapy. Antioxid. Redox Signal. 34, 364-382.
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Affiliation(s)
- Tamara Saksida
- Department of Immunology, Institute for Biological Research "Siniša Stanković," National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Bojan Jevtić
- Department of Immunology, Institute for Biological Research "Siniša Stanković," National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Neda Djedović
- Department of Immunology, Institute for Biological Research "Siniša Stanković," National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Đorđe Miljković
- Department of Immunology, Institute for Biological Research "Siniša Stanković," National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Ivana Stojanović
- Department of Immunology, Institute for Biological Research "Siniša Stanković," National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
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Bergström A, Frantz L, Schmidt R, Ersmark E, Lebrasseur O, Girdland-Flink L, Lin AT, Storå J, Sjögren KG, Anthony D, Antipina E, Amiri S, Bar-Oz G, Bazaliiskii VI, Bulatović J, Brown D, Carmagnini A, Davy T, Fedorov S, Fiore I, Fulton D, Germonpré M, Haile J, Irving-Pease EK, Jamieson A, Janssens L, Kirillova I, Horwitz LK, Kuzmanovic-Cvetković J, Kuzmin Y, Losey RJ, Dizdar DL, Mashkour M, Novak M, Onar V, Orton D, Pasarić M, Radivojević M, Rajković D, Roberts B, Ryan H, Sablin M, Shidlovskiy F, Stojanović I, Tagliacozzo A, Trantalidou K, Ullén I, Villaluenga A, Wapnish P, Dobney K, Götherström A, Linderholm A, Dalén L, Pinhasi R, Larson G, Skoglund P. Origins and genetic legacy of prehistoric dogs. Science 2020; 370:557-564. [PMID: 33122379 PMCID: PMC7116352 DOI: 10.1126/science.aba9572] [Citation(s) in RCA: 85] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 09/10/2020] [Indexed: 12/11/2022]
Abstract
Dogs were the first domestic animal, but little is known about their population history and to what extent it was linked to humans. We sequenced 27 ancient dog genomes and found that all dogs share a common ancestry distinct from present-day wolves, with limited gene flow from wolves since domestication but substantial dog-to-wolf gene flow. By 11,000 years ago, at least five major ancestry lineages had diversified, demonstrating a deep genetic history of dogs during the Paleolithic. Coanalysis with human genomes reveals aspects of dog population history that mirror humans, including Levant-related ancestry in Africa and early agricultural Europe. Other aspects differ, including the impacts of steppe pastoralist expansions in West and East Eurasia and a near-complete turnover of Neolithic European dog ancestry.
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Affiliation(s)
- Anders Bergström
- Ancient Genomics Laboratory, The Francis Crick Institute, London, UK.
| | - Laurent Frantz
- School of Biological and Chemical Sciences, Queen Mary University of London, London, UK.
- Palaeogenomics Group, Department of Veterinary Sciences, Ludwig Maximilian University, Munich, Germany
| | - Ryan Schmidt
- School of Archaeology and Earth Institute, University College Dublin, Dublin, Ireland
- CIBIO-InBIO, University of Porto, Campus de Vairão, Portugal
| | - Erik Ersmark
- Department of Bioinformatics and Genetics, Swedish Museum of Natural History, Stockholm, Sweden
- Centre for Palaeogenetics, Svante Arrhenius väg 18C, Stockholm, Sweden
| | - Ophelie Lebrasseur
- The Palaeogenomics and Bio-Archaeology Research Network, Research Laboratory for Archaeology and History of Art, University of Oxford, Oxford, UK
- Department of Archaeology, Classics and Egyptology, University of Liverpool, Liverpool, UK
| | - Linus Girdland-Flink
- Department of Archaeology, University of Aberdeen, Aberdeen, UK
- Liverpool John Moores University, Liverpool, UK
| | - Audrey T Lin
- The Palaeogenomics and Bio-Archaeology Research Network, Research Laboratory for Archaeology and History of Art, University of Oxford, Oxford, UK
- Department of Zoology, University of Oxford, Oxford, UK
- Department of Anthropology, National Museum of Natural History, Smithsonian Institution, Washington, DC, USA
| | - Jan Storå
- Stockholm University, Stockholm, Sweden
| | | | - David Anthony
- Hartwick College, Oneonta, NY, USA
- Department of Human Evolutionary Biology, Harvard University, Cambridge, MA, USA
| | - Ekaterina Antipina
- Institute of Archaeology of the Russian Academy of Sciences, Moscow, Russian Federation
| | - Sarieh Amiri
- Bioarchaeology Laboratory, Central Laboratory, University of Tehran, Tehran, Iran
| | | | | | | | | | - Alberto Carmagnini
- School of Biological and Chemical Sciences, Queen Mary University of London, London, UK
| | - Tom Davy
- Ancient Genomics Laboratory, The Francis Crick Institute, London, UK
| | - Sergey Fedorov
- North-Eastern Federal University, Yakutsk, Russian Federation
| | - Ivana Fiore
- Bioarchaeology Service, Museo delle Civiltà, Rome, Italy
- Environmental and Evolutionary Biology Doctoral Program, Sapienza University of Rome, Rome, Italy
| | | | | | - James Haile
- University of Copenhagen, Copenhagen, Denmark
| | - Evan K Irving-Pease
- The Palaeogenomics and Bio-Archaeology Research Network, Research Laboratory for Archaeology and History of Art, University of Oxford, Oxford, UK
- Lundbeck GeoGenetics Centre, The Globe Institute, Copenhagen, Denmark
| | - Alexandra Jamieson
- The Palaeogenomics and Bio-Archaeology Research Network, Research Laboratory for Archaeology and History of Art, University of Oxford, Oxford, UK
| | | | | | | | | | - Yaroslav Kuzmin
- Sobolev Institute of Geology and Mineralogy of the Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russian Federation
- Tomsk State University, Tomsk, Russian Federation
| | | | | | - Marjan Mashkour
- Bioarchaeology Laboratory, Central Laboratory, University of Tehran, Tehran, Iran
- Archéozoologie, Archéobotanique, Sociétés, Pratiques et Environnements, Centre National de la Recherche Scientifique, Muséum National d'Histoire Naturelle, Paris, France
| | - Mario Novak
- Centre for Applied Bioanthropology, Institute for Anthropological Research, Zagreb, Croatia
| | - Vedat Onar
- Istanbul University-Cerrahpaşa, Istanbul, Turkey
| | | | - Maja Pasarić
- Institute of Ethnology and Folklore Research, Zagreb, Croatia
| | | | | | | | - Hannah Ryan
- The Palaeogenomics and Bio-Archaeology Research Network, Research Laboratory for Archaeology and History of Art, University of Oxford, Oxford, UK
| | - Mikhail Sablin
- Zoological Institute of the Russian Academy of Sciences, Saint Petersburg, Russian Federation
| | | | | | | | - Katerina Trantalidou
- Hellenic Ministry of Culture & Sports, Athens, Greece
- University of Thessaly, Argonauton & Philellinon, Volos, Greece
| | - Inga Ullén
- National Historical Museums, Stockholm, Sweden
| | - Aritza Villaluenga
- Consolidated Research Group on Prehistory (IT-1223-19), University of the Basque Country (UPV-EHU), Vitoria-Gasteiz, Spain
| | - Paula Wapnish
- Pennsylvania State University, University Park, PA, USA
| | - Keith Dobney
- Department of Archaeology, Classics and Egyptology, University of Liverpool, Liverpool, UK
- Department of Archaeology, University of Aberdeen, Aberdeen, UK
- Department of Archaeology, Simon Fraser University, Burnaby, BC, Canada
- School of Philosophical and Historical Inquiry, Faculty of Arts and Social Sciences, University of Sydney, Sydney, NSW, Australia
| | - Anders Götherström
- Centre for Palaeogenetics, Svante Arrhenius väg 18C, Stockholm, Sweden
- Stockholm University, Stockholm, Sweden
| | | | - Love Dalén
- Department of Bioinformatics and Genetics, Swedish Museum of Natural History, Stockholm, Sweden
- Centre for Palaeogenetics, Svante Arrhenius väg 18C, Stockholm, Sweden
| | - Ron Pinhasi
- Department of Evolutionary Anthropology, University of Vienna, Vienna, Austria.
| | - Greger Larson
- The Palaeogenomics and Bio-Archaeology Research Network, Research Laboratory for Archaeology and History of Art, University of Oxford, Oxford, UK.
| | - Pontus Skoglund
- Ancient Genomics Laboratory, The Francis Crick Institute, London, UK.
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12
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Gajić D, Saksida T, Koprivica I, Šenerović L, Morić I, Šavikin K, Menković N, Pejnović N, Stojanović I. Immunomodulatory activity and protective effects of chokeberry fruit extract on Listeria monocytogenes infection in mice. Food Funct 2020; 11:7793-7803. [PMID: 32808624 DOI: 10.1039/d0fo00946f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Chokeberry (Aronia melanocarpa) fruit extracts (CE) are rich in polyphenols and usually exhibit immunomodulatory, anti-viral and anti-bacterial effects. We have previously shown that the CE used in this study activated macrophages and stimulated effector T cell differentiation in vitro. When applied orally to healthy mice, CE increased the proportion of CD11c+ dendritic cells in the gut-associated lymphoid tissue. CE-pretreated BALB/c mice readily eradicated orally ingested Listeria monocytogenes as evidenced by a slighter decrease in body weight and number of bacteria recovered from the spleen and reduced spleen size compared to the control infected mice. CE pretreatment in infected mice resulted in higher proportions of CD11b+ macrophages and CD8+ cytotoxic T cells both in the gut and the spleen. Phagocytosis, reactive oxygen species production and the proportions of activated CD86+ macrophages (CD11b+) and dendritic cells (CD11c+) were also enhanced in CE-pretreated infected mice. Furthermore, the expression of inducible nitric oxide synthase and IL-6 was increased in CE-pretreated infected mice and similar results were obtained in peritoneal macrophages in vitro. This effect of CE was associated with increased phosphorylation of IκB and Notch1 production. Finally, CE pretreatment elevated the proportion of perforin-producing cells in the spleen compared to control infected mice. This study demonstrates that prophylactic treatment with CE leads to more rapid eradication of bacterial infection with L. monocytogenes predominantly through increased activity of myeloid cells in the gut and in the spleen.
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Affiliation(s)
- Dragica Gajić
- Department of Immunology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11060 Belgrade, Serbia.
| | - Tamara Saksida
- Department of Immunology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11060 Belgrade, Serbia.
| | - Ivan Koprivica
- Department of Immunology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11060 Belgrade, Serbia.
| | - Lidija Šenerović
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade 152, Serbia
| | - Ivana Morić
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade 152, Serbia
| | - Katarina Šavikin
- Institute for Medicinal Plants Research "Dr Josif Pančić", Tadeuša Košćuška 1, 11000 Belgrade, Serbia
| | - Nebojša Menković
- Institute for Medicinal Plants Research "Dr Josif Pančić", Tadeuša Košćuška 1, 11000 Belgrade, Serbia
| | - Nada Pejnović
- Department of Immunology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11060 Belgrade, Serbia.
| | - Ivana Stojanović
- Department of Immunology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11060 Belgrade, Serbia.
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13
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Verdugo MP, Mullin VE, Scheu A, Mattiangeli V, Daly KG, Maisano Delser P, Hare AJ, Burger J, Collins MJ, Kehati R, Hesse P, Fulton D, Sauer EW, Mohaseb FA, Davoudi H, Khazaeli R, Lhuillier J, Rapin C, Ebrahimi S, Khasanov M, Vahidi SMF, MacHugh DE, Ertuğrul O, Koukouli-Chrysanthaki C, Sampson A, Kazantzis G, Kontopoulos I, Bulatovic J, Stojanović I, Mikdad A, Benecke N, Linstädter J, Sablin M, Bendrey R, Gourichon L, Arbuckle BS, Mashkour M, Orton D, Horwitz LK, Teasdale MD, Bradley DG. Ancient cattle genomics, origins, and rapid turnover in the Fertile Crescent. Science 2020; 365:173-176. [PMID: 31296769 DOI: 10.1126/science.aav1002] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Accepted: 06/14/2019] [Indexed: 11/02/2022]
Abstract
Genome-wide analysis of 67 ancient Near Eastern cattle, Bos taurus, remains reveals regional variation that has since been obscured by admixture in modern populations. Comparisons of genomes of early domestic cattle to their aurochs progenitors identify diverse origins with separate introgressions of wild stock. A later region-wide Bronze Age shift indicates rapid and widespread introgression of zebu, Bos indicus, from the Indus Valley. This process was likely stimulated at the onset of the current geological age, ~4.2 thousand years ago, by a widespread multicentury drought. In contrast to genome-wide admixture, mitochondrial DNA stasis supports that this introgression was male-driven, suggesting that selection of arid-adapted zebu bulls enhanced herd survival. This human-mediated migration of zebu-derived genetics has continued through millennia, altering tropical herding on each continent.
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Affiliation(s)
| | - Victoria E Mullin
- Smurfit Institute of Genetics, Trinity College Dublin, Dublin D02 PN40, Ireland.,Department of Earth Sciences, Natural History Museum, London SW7 5BD, UK
| | - Amelie Scheu
- Smurfit Institute of Genetics, Trinity College Dublin, Dublin D02 PN40, Ireland.,Palaeogenetics Group, Institute of Organismic and Molecular Evolution (iOME), Johannes Gutenberg-University Mainz, 55099 Mainz, Germany
| | - Valeria Mattiangeli
- Smurfit Institute of Genetics, Trinity College Dublin, Dublin D02 PN40, Ireland
| | - Kevin G Daly
- Smurfit Institute of Genetics, Trinity College Dublin, Dublin D02 PN40, Ireland
| | - Pierpaolo Maisano Delser
- Smurfit Institute of Genetics, Trinity College Dublin, Dublin D02 PN40, Ireland.,Department of Zoology, University of Cambridge, Cambridge CB2 3EJ, UK
| | - Andrew J Hare
- Smurfit Institute of Genetics, Trinity College Dublin, Dublin D02 PN40, Ireland
| | - Joachim Burger
- Palaeogenetics Group, Institute of Organismic and Molecular Evolution (iOME), Johannes Gutenberg-University Mainz, 55099 Mainz, Germany
| | - Matthew J Collins
- BioArCh, University of York, York YO10 5DD, UK.,Museum of Natural History, University of Copenhagen, Copenhagen, Denmark
| | - Ron Kehati
- 448 Shvil Hachalav Street, Nir Banim 7952500, Israel
| | - Paula Hesse
- Jewish Studies Program, Department of Classics and Ancient Mediterranean Studies, The Pennsylvania State University, University Park, PA 16802, USA
| | - Deirdre Fulton
- Department of Religion, Baylor University, Waco, TX 76798, USA
| | - Eberhard W Sauer
- School of History, Classics and Archaeology, University of Edinburgh, Edinburgh EH8 9AG, UK
| | - Fatemeh A Mohaseb
- Archéozoologie et Archéobotanique (UMR 7209), CNRS, MNHN, UPMC, Sorbonne Universités, Paris, France.,Bioarchaeology Laboratory, Central Laboratory, University of Tehran, 1417634934 Tehran, Iran
| | - Hossein Davoudi
- Bioarchaeology Laboratory, Central Laboratory, University of Tehran, 1417634934 Tehran, Iran.,Osteology Department, National Museum of Iran, 1136918111 Tehran, Iran.,Department of Archaeology, Faculty of Humanities, Tarbiat Modares University, 111-14115 Tehran, Iran
| | - Roya Khazaeli
- Bioarchaeology Laboratory, Central Laboratory, University of Tehran, 1417634934 Tehran, Iran
| | - Johanna Lhuillier
- Archéorient Université Lyon 2, CNRS UMR 5133, Maison de l'Orient et de la Méditerranée, 69365 Lyon, France
| | - Claude Rapin
- Archéologie d'Orient et d'Occident (AOROC, UMR 8546, CNRS ENS), Centre d'archéologie, 75005 Paris, France
| | - Saeed Ebrahimi
- Faculty of Literature and Humanities, Islamic Azad University, 1711734353 Tehran, Iran
| | - Mutalib Khasanov
- Uzbekistan Institute of Archaeology of the Academy of Sciences of the Republic of Uzbekistan, 703051 Samarkand, Uzbekistan
| | - S M Farhad Vahidi
- Agricultural Biotechnology Research Institute of Iran-North branch (ABRII), Agricultural Research, Education and Extension Organization, 4188958883 Rasht, Iran
| | - David E MacHugh
- Animal Genomics Laboratory, UCD School of Agriculture and Food Science, University College Dublin, Dublin D04 V1W8, Ireland.,UCD Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin D04 V1W8, Ireland
| | - Okan Ertuğrul
- Veterinary Faculty, Ankara University, 06110 Ankara, Turkey
| | - Chaido Koukouli-Chrysanthaki
- Hellenic Ministry of Culture and Sports, Department of Prehistoric and Classical Antiquities, and Museums, Serres 62 122, Greece
| | - Adamantios Sampson
- Department of Mediterranean Studies, University of the Aegean, 85132 Rhodes, Greece
| | - George Kazantzis
- Archaeological Museum of Aeani, 500 04, Kozani, Western Macedonia, Greece
| | | | - Jelena Bulatovic
- Laboratory for Bioarchaeology, Department of Archaeology, University of Belgrade, 11000 Belgrade, Serbia
| | | | - Abdesalam Mikdad
- Institut National des Sciences de l'Archéologie et du Patrimoine de Maroc (INSAP) Hay Riad, Madinat al Ifrane, Rabat Instituts, 10000 Rabat, Morocco
| | - Norbert Benecke
- Department of Natural Sciences, German Archaeological Institute, 14195 Berlin, Germany
| | - Jörg Linstädter
- Deutsches Archäologisches Institut, Kommission für Archäologie Außereuropäischer Kulturen (KAAK), 53173 Bonn, Germany
| | - Mikhail Sablin
- Zoological Institute of the Russian Academy of Sciences, 199034 St Petersburg, Russia
| | - Robin Bendrey
- School of History, Classics and Archaeology, University of Edinburgh, Edinburgh EH8 9AG, UK.,Department of Archaeology, University of Reading, Reading RG6 6AB, UK
| | - Lionel Gourichon
- Université Côte d'Azur, CNRS, CEPAM (UMR 7264), 06357 Nice, France
| | - Benjamin S Arbuckle
- Department of Anthropology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Marjan Mashkour
- Archéozoologie et Archéobotanique (UMR 7209), CNRS, MNHN, UPMC, Sorbonne Universités, Paris, France.,Bioarchaeology Laboratory, Central Laboratory, University of Tehran, 1417634934 Tehran, Iran.,Osteology Department, National Museum of Iran, 1136918111 Tehran, Iran
| | - David Orton
- BioArCh, University of York, York YO10 5DD, UK
| | - Liora Kolska Horwitz
- National Natural History Collections, Faculty of Life Sciences, The Hebrew University, 9190401 Jerusalem, Israel
| | - Matthew D Teasdale
- Smurfit Institute of Genetics, Trinity College Dublin, Dublin D02 PN40, Ireland.,BioArCh, University of York, York YO10 5DD, UK
| | - Daniel G Bradley
- Smurfit Institute of Genetics, Trinity College Dublin, Dublin D02 PN40, Ireland.
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14
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Stošić-Grujičić S, Saksida T, Miljković Đ, Stojanović I. MIF and insulin: Lifetime companions from common genesis to common pathogenesis. Cytokine 2019; 125:154792. [PMID: 31400637 DOI: 10.1016/j.cyto.2019.154792] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [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: 05/16/2019] [Revised: 07/01/2019] [Accepted: 07/24/2019] [Indexed: 12/19/2022]
Abstract
Pro-inflammatory nature of macrophage migration inhibitory factor (MIF) has been generally related to the propagation of inflammatory and autoimmune diseases. But this molecule possesses many other peculiar functions, unrelated to the immune system, among which is its supportive role in the post-translational modifications of insulin. In this way MIF enables proper insulin conformation within the pancreatic beta cell and its full activity. The inherent or acquired changes in MIF expression might therefore lead to different insulin processing and initiation of autoimmunity. The relation between MIF and insulin does not stop at this point; these two molecules continue to interact during pathological states characterized by inflammation and insulin resistance. In this context, MIF indirectly and negatively influences insulin action by boosting inflammatory environment and disabling target cells to respond to insulin. On the other side, insulin might interfere with MIF action as well, acting as an anti-inflammatory mediator. Therefore, the proper interaction between MIF and insulin is crucial for maintaining homeostasis, while anti-inflammatory therapies based on the systemic MIF blockage may disturb this balance. This review covers MIF-insulin relationship in the physiological and pathological conditions and discusses the approaches for MIF inhibition and their net effect specifically considering possible impact on insulin misfolding and the possible misinterpretation of previous results due to the discovery of MIF functional homolog D-dopachrome tautomerase.
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Affiliation(s)
- Stanislava Stošić-Grujičić
- Department of Immunology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade, Serbia
| | - Tamara Saksida
- Department of Immunology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade, Serbia
| | - Đorđe Miljković
- Department of Immunology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade, Serbia
| | - Ivana Stojanović
- Department of Immunology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade, Serbia.
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15
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Đedović N, Paunović V, Stojanović I. Isolation and enrichment of mouse insulin-specific CD4 + T regulatory cells. J Immunol Methods 2019; 470:46-54. [PMID: 31039339 DOI: 10.1016/j.jim.2019.04.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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: 01/30/2019] [Revised: 04/01/2019] [Accepted: 04/25/2019] [Indexed: 02/05/2023]
Abstract
Polyclonal T regulatory cells (Treg - CD4+CD25+CD127lowFoxp3+) are used in several protocols for the treatment of type 1 diabetes (T1D), multiple sclerosis and graft-versus host disease in clinical trials. However, general opinion is that autoantigen-specific Treg could be more efficient in autoimmunity suppression due to their direct effect on pathogenic autoantigen-specific effector T cells. This study describes isolation and expansion of insulin-specific Treg in vitro. Insulin-specific Treg are uniformly distributed in lymphoid tissues however their number is extremely low. To enrich the proportion of insulin-specific Treg, pure CD4+ cells were co-cultured with insulin B chain peptide-loaded dendritic cells, isolated from mice that develop T1D spontaneously - NOD mice. Insulin-specific CD4+ cell expansion peaked after 48 h of incubation and was in favour of Treg. These cells were then sorted using insulin peptide-loaded MHC class II tetramers and cultured in vitro for 48 h in the presence of TCR stimulators, TGF-β and IL-2. The proportion of gained insulin-specific cells with T regulatory phenotype (CD4+CD25highCD127lowGITR+FoxP3+) was in average between 93% and 97%. These cells have shown potent in vitro suppressive effect on T effector cells, produced IL-10 and TGF-β and expressed PD-1 and CD39. Further proliferation of these insulin-specific Treg required the presence of dendritic cells, anti-CD3 antibody and IL-2. This study provides new, reproducible experimental design for the enrichment and expansion of insulin-specific Treg that can be used for the cell-based therapy of autoimmunity.
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Affiliation(s)
- Neda Đedović
- Department of Immunology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade, Serbia
| | - Verica Paunović
- Institute of Microbiology and Immunology, School of Medicine, University of Belgrade, Belgrade, Serbia
| | - Ivana Stojanović
- Department of Immunology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade, Serbia.
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16
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Saksida T, Koprivica I, Vujičić M, Stošić-Grujičić S, Perović M, Kanazir S, Stojanović I. Impaired IL-17 Production in Gut-Residing Immune Cells of 5xFAD Mice with Alzheimer's Disease Pathology. J Alzheimers Dis 2019; 61:619-630. [PMID: 29254086 DOI: 10.3233/jad-170538] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [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: 12/21/2022]
Abstract
Alzheimer's disease (AD) is characterized by accumulation of amyloid-β plaques that further promotes microglia-mediated neuroinflammatory responses and inflammation in the brain. Emerging data are revealing the relation between gut-associated lymphoid tissue (GALT) cells and CNS, as effector cells primed in the gut might home to the brain. This study aimed to determine cell composition of GALT in 5xFAD mice, an established model for AD. Immune cells isolated from Peyer's patches (PP) and mesenteric lymph nodes (MLN) were stained with surface and intracellular markers for T helper (Th) subpopulations, B lymphocytes and macrophages and analyzed cytofluorimetrically, while cytokine expression and production were determined by qPCR and ELISA, respectively. Inflammation was detected in GALT of 5xFAD mice with established AD pathology. Although the production of IFN-γ, IL-4, and IL-10 was comparable between the strains, lower IL-17 production was observed in PP and MLN cells. This phenomenon could not be attributed to a lower abundance of Th17 cells, or cytokines that initiate their formation or propagation (TGF-β, IL-6, and IL-23). Also, reduced IL-17 production was not a consequence of altered Il-17 mRNA transcription or deficiency of Rorγt, a key transcription factor for IL-17. However, the expression of miR-155 (a non-coding micro RNA that promotes the development of Th17 cells), was significantly lower in MLN cells of 5xFAD mice. In contrast, mice without AD neuropathology did not have inflammation in GALT or altered Th17 numbers, nor decreased IL-17 production. In conclusion, the observed changes in GALT of 5xFAD mice mirror the disease progression and might reflect inadequate immune surveillance in the gut and lead to enhanced AD pathology.
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Affiliation(s)
- Tamara Saksida
- Department of Immunology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade, Serbia
| | - Ivan Koprivica
- Department of Immunology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade, Serbia
| | - Milica Vujičić
- Department of Immunology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade, Serbia
| | - Stanislava Stošić-Grujičić
- Department of Immunology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade, Serbia
| | - Milka Perović
- Department of Neurobiology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade, Serbia
| | - Selma Kanazir
- Department of Neurobiology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade, Serbia
| | - Ivana Stojanović
- Department of Immunology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade, Serbia
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17
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Koprivica I, Vujičić M, Gajić D, Saksida T, Stojanović I. Ethyl Pyruvate Stimulates Regulatory T Cells and Ameliorates Type 1 Diabetes Development in Mice. Front Immunol 2019; 9:3130. [PMID: 30687329 PMCID: PMC6335294 DOI: 10.3389/fimmu.2018.03130] [Citation(s) in RCA: 15] [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: 10/11/2018] [Accepted: 12/18/2018] [Indexed: 12/31/2022] Open
Abstract
Type 1 diabetes (T1D) is an autoimmune disease in which a strong inflammatory response causes the death of insulin-producing pancreatic β-cells, while inefficient regulatory mechanisms allow that response to become chronic. Ethyl pyruvate (EP), a stable pyruvate derivate and certified inhibitor of an alarmin-high mobility group box 1 (HMGB1), exerts anti-oxidant and anti-inflammatory properties in animal models of rheumatoid arthritis and encephalomyelitis. To test its therapeutic potential in T1D, EP was administered intraperitoneally to C57BL/6 mice with multiple low-dose streptozotocin (MLDS)-induced T1D. EP treatment decreased T1D incidence, reduced the infiltration of cells into the pancreatic islets and preserved β-cell function. Apart from reducing HMGB1 expression, EP treatment successfully interfered with the inflammatory response within the local pancreatic lymph nodes and in the pancreas. Its effect was restricted to boosting the regulatory arm of the immune response through up-regulation of tolerogenic dendritic cells (CD11c+CD11b-CD103+) within the pancreatic infiltrates and through the enhancement of regulatory T cell (Treg) levels (CD4+CD25highFoxP3+). These EP-stimulated Treg displayed enhanced suppressive capacity reflected in increased levels of CTLA-4, secreted TGF-β, and IL-10 and in the more efficient inhibition of effector T cell proliferation compared to Treg from diabetic animals. Higher levels of Treg were a result of increased differentiation and proliferation (Ki67+ cells), but also of the heightened potency for migration due to increased expression of adhesion molecules (CD11a and CD62L) and CXCR3 chemokine receptor. Treg isolated from EP-treated mice had the activated phenotype and T-bet expression more frequently, suggesting that they readily suppressed IFN-γ-producing cells. The effect of EP on Treg was also reproduced in vitro. Overall, our results show that EP treatment reduced T1D incidence in C57BL/6 mice predominantly by enhancing Treg differentiation, proliferation, their suppressive capacity, and recruitment into the pancreas.
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Affiliation(s)
- Ivan Koprivica
- Department of Immunology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade, Serbia
| | - Milica Vujičić
- Department of Immunology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade, Serbia
| | - Dragica Gajić
- Department of Immunology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade, Serbia
| | - Tamara Saksida
- Department of Immunology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade, Serbia
| | - Ivana Stojanović
- Department of Immunology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade, Serbia
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Veljković A, Stanojević G, Branković B, Pavlović D, Stojanović I, Cvetković T, Jevtović T, Sokolović D, Bašić J, Despotović M, Đorđević B, Kocić G. PARAMETERS OF OXIDATIVE STRESS IN COLON CANCER TISSUE. AMM 2016. [DOI: 10.5633/amm.2016.0305] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [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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Branković B, Stanojević G, Nestorović M, Veljković A, Stojanović I, Petrović D, Pavlović D, Kocić G, Đinđić B, Krivokapić Z. TROSATIVE STRESS PARAMETERS IN COLON CANCER TUMOR, ADJACENT AND HEALTHY TISSUE. AMM 2016. [DOI: 10.5633/amm.2016.0107] [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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20
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Djordjević VV, Lazarević D, Ćosić V, Knežević MZ, Djordjević VB, Stojanović I. Diagnostic Accuracy of Brain-derived Neurotrophic Factor and Nitric Oxide in Patients with Schizophrenia: A pilot study. J Med Biochem 2016; 35:7-16. [PMID: 28356859 PMCID: PMC5346796 DOI: 10.1515/jomb-2015-0010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Accepted: 06/16/2015] [Indexed: 01/26/2023] Open
Abstract
Background Brain-derived neurotrophic factor (BDNF) and nitric oxide (NO) play multiple roles in the developing and adult CNS. Since BDNF and NO metabolisms are dysregulated in schizophrenia, we measured these markers simultaneously in the blood of schizophrenics and assessed their diagnostic accuracy. Methods Thirty-eight patients with schizophrenia classified according to demographic characteristics, symptomatologyand therapy and 39 age- and gender-matched healthy controls were enrolled. BDNF was determined by the ELISA technique while the concentration of nitrite/nitrate (NO2−/NO3−) was measured by the colorimetric method. Results Serum BDNF levels were significantly lower (20.38±3.73 ng/mL, P = 1.339E-05), whilst plasma NO2−/NO3− concentrations were significantly higher (84.3 (72–121) μmol/L, P=4.357E-08) in patients with schizophrenia than in healthy controls (25.65±4.32 ng/mL; 60.9 (50–76) μmol/L, respectively). The lowest value of BDNF (18.14±3.26 ng/mL) and the highest NO2−/NO3− concentration (115.3 (80–138) μmol/L) were found in patients treated with second-generation antipsychotics (SGA). The patients diseased before the age of 24 and the patients suffering for up to one year had significantly lower serum BDNF levels than those diseased after the age of 24 and the patients who were ill longer than one year. Both BDNF and NO2−/NO3− showed good diagnostic accuracy, but BDNF had better ROC curve characteristics, especially in patients with negative symptomatology. Conclusions BDNF and nitrite/nitrate showed inverse changes in schizophrenic patients. The most pronounced changes were found in patients treated with second-generation antipsychotics. Although BDNF is not specific of schizophrenia, it may be a clinically useful biomarker for the diagnosis of patients expressing predominantly negative symptoms.
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Affiliation(s)
| | | | - Vladan Ćosić
- Centre for Medical Biochemistry, Clinical Centre Niš, Serbia
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21
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Dejanović B, Ninković M, Stojanović I, Lavrnja I, Radičević T, Stevanović I. Agmatine prevents acute chlorpromazine-induced neurotoxicity in rats. Arh farmaciju 2015. [DOI: 10.5937/arhfarm1506329d] [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: 11/02/2022] Open
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22
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Stojanović I, Milić M, Antović A, Todorović S, Jovanović I. Unusual suicide with a chainsaw. Forensic Sci Int 2013; 228:e58-61. [PMID: 23452874 DOI: 10.1016/j.forsciint.2013.02.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2012] [Revised: 12/06/2012] [Accepted: 02/04/2013] [Indexed: 11/30/2022]
Abstract
A 39-year-old male, with a history of multiple suicidal attempts and psychiatric pathology, a professional lumberjack, was found dead at the meadow with his throat cut and a chainsaw beside him. Autopsy revealed that all physical injuries were confined to the head, neck and left shoulder. Two major (long and wide) wounds were found and documented on both sides of the neck and head. A wound on the posterior and right lateral side of his neck and head was noted. Medical examiner noted an irregular rupture on the posterior-right side of the atlanto-occipital joint with impaired bone, but without any damage on the spinal cord. Another gaping cut was noted in the lower part on the left lateral side of his neck. Medical examiner noted that muscles of the left side of the neck, left common carotid artery, left internal jugular vein and left vagus nerve were completely cut off. The body of the C5 and C6 vertebra, with the spinal cord at that level, was completely cut. Also, there were multiple linear and striped parallel abrasions on the outer side of the left shoulder and one abrasion on the left lateral side of the neck. The conclusion of inquiries was "suicide by chainsaw".
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Affiliation(s)
- I Stojanović
- Institute of Forensic Medicine, Medical Faculty, University of Nis, Dr Zorana Djindjica blv. 81, 18000 Nis, Serbia.
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23
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Bjelaković G, Pavlovic D, Kocic G, Stojanović I, Jevtović-Stoimenov T, Nikolić J, Sokolovic D, Basic J. Dexamethasone decreases the spermidine and spermine concentrations and polyamine oxidase activity in rat thymus. J Basic Clin Physiol Pharmacol 2013; 24:67-72. [PMID: 23425626 DOI: 10.1515/jbcpp-2012-0047] [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] [Received: 09/01/2012] [Accepted: 11/22/2012] [Indexed: 06/01/2023]
Abstract
BACKGROUND Glucocorticoids (GCs) exert a wide range of anti-inflammatory, immunosuppressive, and antineoplastic activities. The aim of our investigation was to elucidate the effect of dexamethasone, a synthetic GC, on polyamine metabolism in the rat thymus. METHODS Male albino Wistar rats, weighing 180-230 g, were divided into two groups: control and experimental. The experimental group received dexamethasone intraperitoneally for 3 days, in a daily dose of 4 mg/animal. The last dose of the hormone was applied on the 3rd day, 1 h before killing. The control group received 0.9% NaCl instead of the hormone. The animals were killed by decapitation. The thymus was removed quickly and rinsed with ice-cold saline. Polyamines were extracted using butanol. The amount of polyamines was investigated by electrophoresis. For the estimation of polyamine oxidase (PAO) activity, 10% water homogenate was prepared. RESULTS Our results suggested that dexamethasone supplementation of experimental animals for 3 days significantly decreased the spermine (Sp) and spermidine (Spd) levels in rat thymus tissue (Sp Control, 362.56±25.33 nmol/g wet weight; Sp Exp. Group, 313.01±21.16 nmol/g wet weight; Spd Control, 673.81±30.95 nmol/g wet weight; Spd Exp. Group, 410.21±17.26 nmol/g wet weight). PAO activity significantly decreased under hormone influence in comparison with the control group (PAO Control, 0.449±0.121 U/mg prot.; PAO Exp. Group, 0.312±0.096 U/mg prot.). CONCLUSIONS The decrease in polyamine amounts in the rat thymus is not due to the change in PAO activity.
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Affiliation(s)
- Gordana Bjelaković
- Faculty of Medicine, Institute of Biochemistry, University of Nis, Nis, Serbia.
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24
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Francuski BM, Ivković B, Stojanović I, Vladimirov S, Francuski D. 2-[2-(Trifluoro-meth-yl)phen-yl]-2H-1-benzopyran-4(3H)-one. Acta Crystallogr Sect E Struct Rep Online 2012; 68:o1522. [PMID: 22590388 PMCID: PMC3344626 DOI: 10.1107/s160053681201687x] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2012] [Accepted: 04/17/2012] [Indexed: 11/29/2022]
Abstract
In the title compound, C16H11F3O2, the γ-pyranone ring adopts an envelope conformation with the chiral C atom standing out of the ring plane. In the crystal, molecules are linked by C—H⋯O and C—H⋯F interactions.
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Djordjević VB, Cosić V, Stojanović I, Kundalić S, Zvezdanović L, Deljanin-Ilić M, Vlahović P, Popović L. Lipoprotein(a) Is the Best Single Marker in Assessing Unstable Angina Pectoris. Cardiol Res Pract 2011; 2011:175363. [PMID: 21403866 PMCID: PMC3051153 DOI: 10.4061/2011/175363] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2010] [Revised: 11/30/2010] [Accepted: 12/30/2010] [Indexed: 01/17/2023] Open
Abstract
This study evaluated whether statin therapy changed a diagnostic validity of lipid and inflammatory markers in ischemic heart disease (IHD) patients. Levels of lipids, lipoproteins, apolipoproteins, inflammatory markers, and atherogenic indexes were determined in 49 apparently healthy men and women, 82 patients having stable angina pectoris (SAP), 80 patients with unstable angina (USAP), and 106 patients with acute ST-elevation myocardial infarction (STEMI) treated or not treated with statins. Diagnostic accuracy of markers was determined by ROC curve analysis. Significantly lower apoA-I in all statin-treated groups and significantly higher apoB in statin-treated STEMI group compared to non-statin-treated groups were observed. CRP showed the best ROC characteristics in the assessment of STEMI patients. Lp(a) is better in the evaluation of SAP and USAP patients, considering that Lp(a) showed the highest area under the curve (AUC). Regarding atherogenic indexes, the highest AUC in SAP group was obtained for TG/apoB and in USAP and STEMI patients for TG/HDL-c. Statins lowered total cholesterol, LDL-c, and TG but fail to normalize apoA-I in patients with IHD.
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Stevanović ID, Jovanović MD, Colić M, Jelenković A, Bokonjić D, Ninković M, Stojanović I. N-nitro-L-arginine methyl ester influence on aluminium toxicity in the brain. Folia Neuropathol 2011; 49:219-229. [PMID: 22101955] [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
We investigated the influence of a non-specific nitric oxide synthase (NOS) inhibitor, N-nitro-L-arginine methyl ester (L-NAME), on brain nitrite concentration and acetylcholine esterase activity in AlCl3-treated Wistar rats. Animals were killed 10 min, three hours, three days and 30 days after the treatment and hippocampus and basal forebrain were removed. The biochemical changes observed in neuronal tissues show the involvement of NO in the AlCl3 toxicity and cholinergic neurotransmission, and that L-NAME may have potential neuroprotective effects. Active avoidance learning was significantly impaired after AlCl3 application, while pretreatment with L-NAME prevented the behavioural deficits caused by AlCl3. We also applied immunohistochemical techniques to identify changes induced by AlCl3, L-NAME+AlCl3, as well as L-NAME injections after survival periods of three days and 30 days. Immunoreactivity of astrocytes and phagocytic microglia based on glial fibrillary acidic protein (GFAP) and a useful marker for rat macrophages (ED1), respectively, revealed a greater inflammatory response in AlCl3-injected animals compared to controls.
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Affiliation(s)
- Ivana D Stevanović
- Military Medical Academy, Institute for Medical Research, Crnotravska 17, 11 000 Belgrade, Serbia.
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Stojanović I, Jelenković A, Stevanović I, Pavlović D, Bjelaković G, Jevtović-Stoimenov T. Spermidine influence on the nitric oxide synthase and arginase activity relationship during experimentally induced seizures. J Basic Clin Physiol Pharmacol 2010; 21:169-85. [PMID: 20853599 DOI: 10.1515/jbcpp.2010.21.2.169] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Nitric oxide (NO), a potential candidate for a modulator of convulsive activity, is a mediator in several pathological events in the central nervous system. The polyamines, spermidine (Spd) and spermine, are neuromodulators influencing the metabolism of L-arginine and NO production. Here we examined the effects of Spd on NO production and arginase activity during convulsions induced by pentylenetetrazol (PTZ). Male Wistar rats were allocated into four experimental groups of 8 animals each and received the following treatments: I (control)--saline, intraperitoneally (i.p.); II (PTZ)--seizures induced by pentylenetetrazol (100mg/kg bw i.p); III (Spd)--Spd (1 mg/kg bw i.p.) 50 min before PTZ application; IV (Mid)--antiepileptic Midazolam (100 mg/kg bw) 45 min before PTZ. In brain cortex, striatum, hippocampus, cerebellum, and brainstem homogenates, nitrite + nitrate levels and arginase activity were determined. Spermidine showed proepileptic effects. shortening seizure latency and inducing a more profound increase of NO production than PTZ in all brain structures. PTZ reduced arginase activity, whereas Spd pretreatment increased enzyme activity, with the most profound effects in cerebellum and brainstem. The results point out the importance of polyamine and arginine metabolism in the brain during seizures, suggesting a regulatory role for polyamines and arginase in NO production.
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Affiliation(s)
- I Stojanović
- Institute of Biochemistry, Faculty ofMedicine, University of Nis, Nis, Serbia.
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Bjelaković G, Stojanović I, Jevtović Stoimenov T, Pavlović D, Kocić G, Rossi S, Tabolacci C, Nikolić J, Sokolović D, Bjelakovic L. Metabolic correlations of glucocorticoids and polyamines in inflammation and apoptosis. Amino Acids 2010; 39:29-43. [PMID: 20169375 DOI: 10.1007/s00726-010-0489-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2009] [Accepted: 01/16/2010] [Indexed: 01/28/2023]
Abstract
Glucocorticoid hormones (GC) are essential in all aspects of human health and disease. Their anti-inflammatory and immunosuppressive properties are reasons for therapeutic application in several diseases. GC suppress immune activation and uncontrolled overproduction and release of cytokines. GC inhibit the release of pro-inflammatory cytokines and stimulate the production of anti-inflammatory cytokines. Investigation of GC's mechanism of action, suggested that polyamines (PA) may act as mediators or messengers of their effects. Beside glucocorticoids, spermine (Spm) is one of endogenous inhibitors of cytokine production. There are many similarities in the metabolic actions of GC and PA. The major mechanism of GC effects involves the regulation of gene expression. PA are essential for maintaining higher order organization of chromatin in vivo. Spermidine and Spm stabilize chromatin and nuclear enzymes, due to their ability to form complexes with negatively charged groups on DNA, RNA and proteins. Also, there is an increasing body of evidence that GC and PA change the chromatin structure especially through acetylation and deacetylation of histones. GC display potent immunomodulatory activities, including the ability to induce T and B lymphocyte apoptosis, mediated via production of reactive oxygen species (ROS) in the mitochondrial pathway. The by-products of PA catabolic pathways (hydrogen peroxide, amino aldehydes, acrolein) produce ROS, well-known cytotoxic agents involved in programmed cell death (PCD) or apoptosis. This review is an attempt in the better understanding of relation between GC and PA, naturally occurring compounds of all eukaryotic cells, anti-inflammatory and apoptotic agents in physiological and pathological conditions connected to oxidative stress or PCD.
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Affiliation(s)
- G Bjelaković
- Faculty of Medicine, Institute of Biochemistry, University of Nis, Nis, Serbia.
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Djordjević VV, Stojanović I, Stanković-Ferlež D, Ristić T, Lazarević D, Ćosić V, Djordjević VB. Plasma nitrite/nitrate concentrations in patients with schizophrenia. Clin Chem Lab Med 2010; 48:89-94. [DOI: 10.1515/cclm.2010.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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Cvjetićanin T, Stojanović I, Timotijević G, Stosić-Grujicić S, Miljković D. T cells cooperate with palmitic acid in induction of beta cell apoptosis. BMC Immunol 2009; 10:29. [PMID: 19463182 PMCID: PMC2693514 DOI: 10.1186/1471-2172-10-29] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2008] [Accepted: 05/22/2009] [Indexed: 12/24/2022] Open
Abstract
Background Diabetes is characterized by progressive failure of insulin producing beta cells. It is well known that both saturated fatty acids and various products of immune cells can contribute to the reduction of beta cell viability and functionality during diabetes pathogenesis. However, their joint action on beta cells has not been investigated, so far. Therefore, we explored the possibility that leukocytes and saturated fatty acids cooperate in beta cell destruction. Results Rat pancreatic islets or insulinoma cells (RIN) were co-cultivated with concanavalin A (ConA)-stimulated rat lymph node cells (LNC), or they were treated with cell-free supernatants (Sn) obtained from ConA-stimulated spleen cells or from activated CD3+ cells, in the absence or presence of palmitic acid (PA). ConA-stimulated LNC or Sn and PA cooperated in inducing caspase-3-dependent RIN cell apoptosis. The observed effect of PA and Sn on RIN cell viability was mediated by p38 mitogen-activated protein kinase (MAPK)-signaling and was achieved through auto-destructive nitric oxide (NO) production. The cooperative effect of Sn was mimicked with the combination of interleukin-1β, interleukin-2, interleukin-6, interleukin-17, interferon-γ and tumor necrosis factor-α. Conclusion These results imply that stimulated T cells produce cytokines that cooperate with saturated free fatty acids in beta cell destruction during diabetes pathogenesis.
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Affiliation(s)
- Tamara Cvjetićanin
- Department of Immunology, Institute for Biological Research Sinisa Stanković, University of Belgrade, Belgrade, Serbia.
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Stevanović ID, Jovanović MD, Jelenković A, Colić M, Stojanović I, Ninković M. Effects of L-NAME, a non-specific nitric oxide synthase inhibitor, on AlCl3-induced toxicity in the rat forebrain cortex. J Vet Sci 2009; 10:15-22. [PMID: 19255519 PMCID: PMC2801103 DOI: 10.4142/jvs.2009.10.1.15] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The present experiments were done to determine the effectiveness of a non-specific nitric oxide synthase inhibitor, N-nitro-L-arginine methyl ester (L-NAME), on oxidative stress parameters induced by aluminium chloride (AlCl3) intrahippocampal injections in Wistar rats. Animals were sacrificed 3 h and 30 d after treatments, heads were immediately frozen in liquid nitrogen and forebrain cortices were removed. Crude mitochondrial fraction preparations of forebrain cortices were used for the biochemical analyses: nitrite levels, superoxide production, malondialdehyde concentrations, superoxide dismutase (SOD) activities and reduced glutathione contents. AlCl3 injection resulted in increased nitrite concentrations, superoxide anion production, malondialdehyde concentrations and reduced glutathione contents in the forebrain cortex, suggesting that AlCl3 exposure promoted oxidative stress in this brain structure. The biochemical changes observed in neuronal tissues showed that aluminium acted as a pro-oxidant. However, the non-specific nitric oxide synthase (NOS) inhibitor, L-NAME, exerted anti-oxidant actions in AlCl3-treated animals. These results revealed that NO-mediated neurotoxicity due to intrahippocampal AlCl3 injection spread temporally and spatially to the forebrain cortex, and suggested a potentially neuroprotective effect for L-NAME.
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Affiliation(s)
- Ivana D Stevanović
- Military Medical Academy, Institute for Medical Research, Crnotravska 17, Belgrade, Serbia.
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Stosić-Grujicić S, Cvjetićanin T, Stojanović I. Retinoids differentially regulate the progression of autoimmune diabetes in three preclinical models in mice. Mol Immunol 2009; 47:79-86. [PMID: 19211146 DOI: 10.1016/j.molimm.2008.12.028] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2008] [Revised: 11/09/2008] [Accepted: 12/24/2008] [Indexed: 11/29/2022]
Abstract
Retinoids have a variety of biological activities, including immunomodulatory action in a number of inflammatory and autoimmune conditions. Considering the pathogenesis of type 1 diabetes mellitus (T1D), in this study we examined the potential role for retinoids, etretinate and all-trans-retinoic acid (ATRA) in preclinical models of human T1D. When administered prophylactically to CBA/H mice made diabetic with multiple low doses of streptozotocin (MLD-STZ), both drugs effectively prevented clinical signs of diabetes. Prevention of T1D was associated with reduced emergence of primed (autoreactive) CD4(+) CD25(+) T cells, but not with the emergence of Foxp3(+) Treg in the peripheral compartments. Moreover, the animals receiving ATRA exhibited reduced Th1/Th17 response and nitric oxide (NO) production in the peripheral lymphoid tissues, thus shifting the balance towards the anti-inflammatory cytokines. In NOD mice with spontaneous form of diabetes, ATRA prophylaxis, starting at a time point immediately before T1D onset, markedly reduced hyperglycemia and incidence of the disease. However, administration of ATRA to NOD mice in which the proportion and function of CD4(+)Foxp3(+) Treg cells was abrogated by cyclophosphamide (CY), failed to permit progression to T1D. These findings suggest that effectiveness of T1D suppression by retinoids depends on the presence of Tregs which down-modulate immunoinflammatory events at the second "check-point" and allow diabetes progression.
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Affiliation(s)
- Stanislava Stosić-Grujicić
- Department of Immunology, Institute for Biological Research Sinisa Stanković, Belgrade University, Bulevar Despota Stefana 142, 11060 Belgrade, Serbia.
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Stevanović ID, Jovanović MD, Jelenković A, Ninković M, Dukić M, Stojanović I, Colić M. The effect of inhibition of nitric oxide synthase on aluminium-induced toxicity in the rat brain. Gen Physiol Biophys 2009; 28 Spec No:235-242. [PMID: 19893106] [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: 05/28/2023]
Abstract
The goal of the present study was to examine the effectiveness of a non-specific nitric oxide synthase (NOS) inhibitor N-nitro-L-arginine methyl ester (L-NAME) to modulate the toxicity of aluminium chloride (AlCl3). Rats were killed at 3 h and at 30 days after treatments and the striatum was removed. Nitrite, superoxide, superoxide dismutase activity, malondialdehyde and reduced glutathione were determined. AlCl3 exposure promoted oxidative stress in the striatum. The biochemical changes observed in neuronal tissues show that aluminium acts as pro-oxidant, while the NOS inhibitor exerts antioxidant action in AlCl3-treated rats. We conclude that L-NAME can efficiently protect neuronal tissue from AlCl3-induced toxicity.
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Affiliation(s)
- Ivana D Stevanović
- Institute for Medical Research, Military Medical Academy, Crnotravska 17, 11 000 Belgrade, Serbia.
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Stojanović I, Cvjetićanin T, Lazaroski S, Stosić-Grujicić S, Miljković D. Macrophage migration inhibitory factor stimulates interleukin-17 expression and production in lymph node cells. Immunology 2008; 126:74-83. [PMID: 18624729 DOI: 10.1111/j.1365-2567.2008.02879.x] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Interleukin (IL)-17 is a pro-inflammatory cytokine produced by recently described T helper type 17 (Th17) cells, which have critical role in immunity to extracellular bacteria and the pathogenesis of several autoimmune disorders. IL-6 and transforming growth factor (TGF)-beta are crucial for the generation of Th17 cells in mice, while the production of IL-17 is supported by various cytokines, including IL-23, IL-1beta, IL-21, IL-15 and tumour necrosis factor (TNF)-alpha. In this study, the influence of a multifunctional cytokine, macrophage migration inhibitory factor (MIF), on IL-17 production in mice was investigated. Treatment of lymph node cells (LNCs) with recombinant MIF up-regulated mitogen-stimulated IL-17 expression and secretion. Additionally, LNCs from MIF knockout mice (mif(-/-)) had severely impaired production of IL-17, as well as of IL-1beta, IL-6, IL-23 and TGF-beta. When stimulated with recombinant IL-1beta, IL-23 or TNF-alpha, mitogen-triggered mif(-/-) LNCs were fully able to achieve the IL-17 production seen in wild-type (WT) LNCs, while the addition of IL-6 and TGF-beta had no effect. Finally, after injection of mice with complete Freund's adjuvant, secretion of IL-17 as well as the number of IL-17-positive cells was significantly lower in the draining lymph nodes of mif(-/-) mice in comparison with WT mice. The effect of MIF on IL-17 production was dependent on p38, extracellular signal-regulated kinase (ERK), Jun N-terminal kinase (JNK) and Janus kinase 2/signal transducer and activator of transcription 3 (Jak2/STAT3), and not on nuclear factor (NF)-kappaB and nuclear factor of activated T cells (NFAT) signalling. Bearing in mind the contribution of MIF and IL-17 to the pathology of inflammatory and autoimmune disorders, from the results presented here it seems plausible that targeting MIF biological activity could be a valid therapeutic approach for the treatment of such diseases.
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Affiliation(s)
- Ivana Stojanović
- Department of Immunology, Institute for Biological Research Sinisa Stanković, University of Belgrade, Belgrade, Serbia.
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Harhaji L, Mijatović S, Maksimović-Ivanić D, Stojanović I, Momcilović M, Maksimović V, Tufegdzić S, Marjanović Z, Mostarica-Stojković M, Vucinić Z, Stosić-Grujicić S. Anti-tumor effect of Coriolus versicolor methanol extract against mouse B16 melanoma cells: in vitro and in vivo study. Food Chem Toxicol 2008; 46:1825-33. [PMID: 18313195 DOI: 10.1016/j.fct.2008.01.027] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2007] [Revised: 12/13/2007] [Accepted: 01/14/2008] [Indexed: 12/14/2022]
Abstract
Numerous studies have shown immunostimulatory and anti-tumor effects of water and standardized aqueous ethanol extracts derived from the medicinal mushroom, Coriolus versicolor, but the biological activity of methanol extracts has not been examined so far. In the present study we investigated the anti-tumor effect of C. versicolor methanol extract (which contains terpenoids and polyphenols) on B16 mouse melanoma cells both in vitro and in vivo. In vitro treatment of the cells with the methanol extract (25-1600 microg/ml) reduced melanoma cell viability in a dose-dependent manner. Furthermore, in the presence of the methanol extract (200 microg/ml, concentration IC(50)) the proliferation of B16 cells was arrested in the G(0)/G(1) phase of the cell cycle, followed by both apoptotic and secondary necrotic cell death. In vivo methanol extract treatment (i.p. 50 mg/kg, for 14 days) inhibited tumor growth in C57BL/6 mice inoculated with syngeneic B16 tumor cells. Moreover, peritoneal macrophages collected 21 days after tumor implantation from methanol extract-treated animals exerted stronger tumoristatic activity ex vivo than macrophages from control melanoma-bearing mice. Taken together, our results demonstrate that C. versicolor methanol extract exerts pronounced anti-melanoma activity, both directly through antiproliferative and cytotoxic effects on tumor cells and indirectly through promotion of macrophage anti-tumor activity.
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Affiliation(s)
- Lj Harhaji
- Department of Immunology, Institute for Biological Research Sinisa Stanković, Belgrade University, Belgrade, Serbia
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Bjelaković G, Stojanović I, Jevtović-Stoimenov T, Kostić G, Sokolović D, Ilić M, Bjelaković L. Polyamine oxidase activity in peripheral blood of newborn infants with neonatal hyperbilirubinemia: is bilirubin an antioxidant? J Basic Clin Physiol Pharmacol 2008; 19:103-18. [PMID: 19024928 DOI: 10.1515/jbcpp.2008.19.2.103] [Citation(s) in RCA: 2] [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: 05/27/2023]
Abstract
BACKGROUND Neonatal hyperbilirubinemia can be physiological and pathological and most frequently is a consequence of faster erythrocytes (RBC) hemolysis. Free unconjugated bilirubin is a highly toxic compound, especially for the central nervous system. The most abundant polyamines circulating in blood are spermidine (Spd) and spermine (Sp), which are mainly localized in RBC, where they control membrane permeability. Polyamine oxidase (PAO) exerts an important activity in the plasma and erythrocytes of newborn infants with hyperbilirubinemia, catalyzing the oxidative deamination of Sp and Spd, producing potentially toxic agents that induce apoptosis of mammalian cells. The present study investigated polyamine metabolism by measuring PAO activity in the blood of newborn infants with hyperbilirubinemia and explored the possible antioxidant function of bilirubin through monitoring malondialdehyde (MDA) levels. METHODS The study included 43 newborns, 10 in the control and 33 in the diseased group. Blood PAO activity and bilirubin and MDA levels were measured using spectrophotometric methods. RESULTS/DISCUSSION Our results indicate that bilirubin, at physiologic concentrations, protects neonatal erythrocytes against oxidative stress. The positive correlation between PAO activity and MDA levels with high bilirubin concentrations (> 200 micromol/L) in newborn infants indicates that in pathological conditions, bilirubin cannot exert its antioxidant function. CONCLUSION Investigating the function of polyamines in erythrocytes and the importance of PAO related to hemolysis and bilirubin synthesis is necessary to shed light on the functions of PAO and its metabolites on the permeability of the erythrocyte membrane.
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Bjelaković G, Beninati S, Pavlović D, Sokolović D, Stojanović I, Jevtović T, Bjelaković GB, Nikolić J, Basić J. Selenomethionine induces polyamine biosynthesis in regenerating rat liver tissue. Amino Acids 2007; 33:525-9. [PMID: 17031481 DOI: 10.1007/s00726-006-0392-0] [Citation(s) in RCA: 2] [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] [Received: 04/25/2006] [Accepted: 06/19/2006] [Indexed: 10/24/2022]
Abstract
Our study was undertaken to elucidate the effects of selenomethionine (SeMet) on polyamine metabolism in regenerating rat liver tissue, as useful model of rapidly growing normal tissue. We have examined the levels of spermine, spermidine and putrescine in liver tissue. At the same time we have evaluated the activities of polyamine oxidase (PAO) and diamine oxidase (DAO), the catabolic enzymes of polyamine metabolism. The obtained results suggest that polyamine levels in regenerating liver tissue, at 7(th) day after two-thirds partial hepatectomy, were higher in comparison with control group. The administration of selenomethionine to hepatectomized animals during seven days, in a single daily dose of 2.5 microg/100 g body weight, increases the amount of spermine and spermidine; the level of putrescine does not change under the influence of SeMet in regenerating rat liver tissue.PAO activity is lower in regenerating hepatic tissue than in control group. Supplementation of hepatectomized animals with SeMet significantly decreases the activity of this enzyme. DAO activity was significantly higher in hepatectomized and in operated animals treated with SeMet compared to the sham-operated and control ones. The differential sensitivity observed in our model of highly proliferating normal tissue to SeMet, compared with the reported anticancer activity of this molecule is discussed.
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Affiliation(s)
- G Bjelaković
- Institute of Biochemistry, Faculty of Medicine, University of Nis, Nis, Serbia.
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Bjelaković G, Beninati S, Pavlović D, Kocić G, Jevtović T, Kamenov B, Saranac LJ, Bjelaković B, Stojanović I, Basić J. Glucocorticoids and oxidative stress. J Basic Clin Physiol Pharmacol 2007; 18:115-27. [PMID: 17715567 DOI: 10.1515/jbcpp.2007.18.2.115] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.0] [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: 12/25/2022]
Abstract
Glucocorticoids (GC) are used widely for the treatment of patients with various disorders, including autoimmune diseases, allergies, and lymphoproliferative disorders. Glucocorticoid therapy is often limited by several adverse reactions associated with GC excess. Excess GC can elicit a variety of symptoms and signs, including growth retardation in children; immunosuppression; cardiovascular disorders like hypertension and atherosclerosis; osteoporosis; myopathy; and diabetes mellitus. Currently, attention is focused on oxidative stress as one of the major determinants of endothelial dysfunction and cardiovascular senescence. The main reason for all unwanted effects of GC is that dexamethasone induces the overproduction of reactive oxygen species, causing dysregulation of physiological processes. Humans and animals with GC-induced hypertension exhibit reduced nitric oxide levels; patients with excess GC levels also suffer from depression as a consequence of low levels of serotonin and melatonin. The common cofactor for the production of these vasoactive molecules is tetrahydrobiopterin (BH4), which is required for nitric oxide synthesis.
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Affiliation(s)
- G Bjelaković
- Institute of Biochemistry, CC Nis, Faculty of Medicine, University of Nisg, Nis, Serbia.
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Djordjević VB, Stanković T, Cosić V, Zvezdanović L, Kamenov B, Tasić-Dimov D, Stojanović I. Immune system-mediated endothelial damage is associated with NO and antioxidant system disorders. Clin Chem Lab Med 2005; 42:1117-21. [PMID: 15552269 DOI: 10.1515/cclm.2004.229] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [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
Two distinct systems of different origin are involved in the pathogenesis of both infectious and immunological vasculitis syndrome: nitric oxide (NO) from endothelial cells and granulocyte NADPH oxidase. In this study, in 31 children with immune system dysfunction, NO, NO synthase (NOS) and antioxidant enzyme activities [catalase, superoxide dismutase (SOD), glutathione peroxidase (GPx)], as well as immunological parameters, were investigated. On the basis of the clinical findings, all children were divided into three groups: group I, 8 children clinically showing macular skin manifestations; group II, 11 children with maculo-papulous changes; and group III, 12 children with clinical findings of papulous changes. Plasma NO values in groups II and III were significantly elevated (79.14+/-30.13 and 65.32+/-6.70 micromol/l), compared to the control group (41.24+/-3.65 micromol/l), while group I showed statistically lower values (32.38+/-3.37 micromol/l). In children with the highest level of NO (group II) NOS activity was two-fold higher (1.77+/-0.59 nmol/ml/min; p<0.01) than in controls (0.98+/-0.23 nmol/ml/min). Catalase activity showed a significant increase and SOD activity a significant decrease in all experimental groups, while GPx was not significantly changed. The results show that immune system dysfunction manifested as vasculitis is associated with significant disturbances in the NO system and free radicals scavengers.
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Kocić G, Vlahović P, Pavlović D, Kocić R, Cvetković T, Stojanović I. The possible importance of the cation-binding site for the oxidative modification of liver 5'-nucleotidase. Arch Physiol Biochem 1998; 106:91-9. [PMID: 9894865 DOI: 10.1076/apab.106.2.91.4386] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [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: 11/03/2022]
Abstract
The oxidative damage of proteins and lipid peroxidation of membrane lipoproteins has already been described as a possible pathogenic mechanism for liver injury. The aim of the present study was to examine the mechanism that could be responsible for the oxidative modification of rat liver 5'-nucleotidase during exposure to different free radical generating systems: FeCl2/ascorbate, xanthine/xanthine oxidase and H2O2. The level of lipid peroxidation products malondialdehyde (MDA), as well as the level of protein carbonyl groups formation was measured in cells and extracellular medium. The activity of 5'-nucleotidase was linearly decreased in both hepatocytes and extracellular medium after exposure to the FeCl2/ascorbate system indicating that the possible mechanism for oxidative modification could be a metal-binding site of the enzyme. In xanthine/xanthine oxidase system the enzyme activity of hepatocytes had decreased in hepatocytes but increased in the extracellular medium indicating that proteolysis of membrane proteins could he responsible for enzyme release in the extracellular medium. When hepatocytes were exposed to a H2O2 free-radical generating system, the activity of 5'-nucleotidase tended to be decreased in cells and decreased in extracellular medium too, indicating that H2O2 could be less reactive in producing an oxidative modification of the enzyme. In order to support the hypothesis that the cation-binding site can be responsible for oxidative modification of the enzyme, the isolated hepatocytes were preincubated with a Ca(2+)-channel blocker (Verapamil) and then exposed to different radical-generating systems. Verapamil had only a slight effect in potentiating the inhibition in the FeCl2/ascorbate system. This probably means that the cellular cation flux and cation binding may be included as a vulnerable site with the greatest importance in the oxidative modification of 5'-nucleotidase.
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Affiliation(s)
- G Kocić
- Institute of Biochemistry, Faculty of Medicine, Nis, Serbia
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Berović Z, Stojanović I, Josipović D, Spasojević L. [Coxitis in rheumatoid arthritis]. SRP ARK CELOK LEK 1970; 98:205-17. [PMID: 5205588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
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Majstorović S, Stojanović I, Lambić I. [Autoimmunity and changes in the cardiovascular system in rheumatoid arthritis]. Med Glas 1970; 24:5-11. [PMID: 5203086] [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: 01/14/2023]
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