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Nesovic Ostojic J, Kovacevic S, Ivanov M, Brkic P, Zivotic M, Mihailovic-Stanojevic N, Karanovic D, Vajic UJ, Jeremic R, Jovovic D, Miloradovic Z. Hyperbaric Oxygen Reduces Oxidative Stress Impairment and DNA Damage and Simultaneously Increases HIF-1α in Ischemia-Reperfusion Acute Kidney Injury. Int J Mol Sci 2024; 25:3870. [PMID: 38612680 PMCID: PMC11011961 DOI: 10.3390/ijms25073870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 03/25/2024] [Accepted: 03/27/2024] [Indexed: 04/14/2024] Open
Abstract
The central exacerbating factor in the pathophysiology of ischemic-reperfusion acute kidney injury (AKI) is oxidative stress. Lipid peroxidation and DNA damage in ischemia are accompanied by the formation of 3-nitrotyrosine, a biomarker for oxidative damage. DNA double-strand breaks (DSBs) may also be a result of postischemic AKI. γH2AX(S139) histone has been identified as a potentially useful biomarker of DNA DSBs. On the other hand, hypoxia-inducible factor (HIF) is the "master switch" for hypoxic adaptation in cells and tissues. The aim of this research was to evaluate the influence of hyperbaric oxygen (HBO) preconditioning on antioxidant capacity estimated by FRAP (ferric reducing antioxidant power) and ABTS (2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid)) assay, as well as on oxidative stress parameter 3-nitrotyrosine, and to assess its effects on γH2AX(S139), HIF-1α, and nuclear factor-κB (NF-κB) expression, in an experimental model of postischemic AKI induced in spontaneously hypertensive rats. The animals were divided randomly into three experimental groups: sham-operated rats (SHAM, n = 6), rats with induced postischemic AKI (AKI, n = 6), and group exposed to HBO preconditioning before AKI induction (AKI + HBO, n = 6). A significant improvement in the estimated glomerular filtration rate, eGFR, in AKI + HBO group (p < 0.05 vs. AKI group) was accompanied with a significant increase in plasma antioxidant capacity estimated by FRAP (p < 0.05 vs. SHAM group) and a reduced immunohistochemical expression of 3-nitrotyrosine and γH2AX(S139). Also, HBO pretreatment significantly increased HIF-1α expression (p < 0.001 vs. AKI group), estimated by Western blot and immunohistochemical analysis in kidney tissue, and decreased immunohistochemical NF-κB renal expression (p < 0.01). Taking all of these results together, we may conclude that HBO preconditioning has beneficial effects on acute kidney injury induced in spontaneously hypertensive rats.
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Affiliation(s)
- Jelena Nesovic Ostojic
- Department of Pathological Physiology, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia;
| | - Sanjin Kovacevic
- Department of Pathological Physiology, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia;
| | - Milan Ivanov
- Department of Cardiovascular Physiology, Institute for Medical Research, National Institute of Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia; (M.I.); (N.M.-S.); (D.K.); (U.J.V.); (D.J.); (Z.M.)
| | - Predrag Brkic
- Department of Medical Physiology, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (P.B.); (R.J.)
| | - Maja Zivotic
- Institute of Pathology, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia;
| | - Nevena Mihailovic-Stanojevic
- Department of Cardiovascular Physiology, Institute for Medical Research, National Institute of Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia; (M.I.); (N.M.-S.); (D.K.); (U.J.V.); (D.J.); (Z.M.)
| | - Danijela Karanovic
- Department of Cardiovascular Physiology, Institute for Medical Research, National Institute of Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia; (M.I.); (N.M.-S.); (D.K.); (U.J.V.); (D.J.); (Z.M.)
| | - Una Jovana Vajic
- Department of Cardiovascular Physiology, Institute for Medical Research, National Institute of Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia; (M.I.); (N.M.-S.); (D.K.); (U.J.V.); (D.J.); (Z.M.)
| | - Rada Jeremic
- Department of Medical Physiology, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (P.B.); (R.J.)
| | - Djurdjica Jovovic
- Department of Cardiovascular Physiology, Institute for Medical Research, National Institute of Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia; (M.I.); (N.M.-S.); (D.K.); (U.J.V.); (D.J.); (Z.M.)
| | - Zoran Miloradovic
- Department of Cardiovascular Physiology, Institute for Medical Research, National Institute of Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia; (M.I.); (N.M.-S.); (D.K.); (U.J.V.); (D.J.); (Z.M.)
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Rasic P, Jeremic M, Jeremic R, Dusanovic Pjevic M, Rasic M, Djuricic SM, Milickovic M, Vukadin M, Mijovic T, Savic D. Targeting B7-H3-A Novel Strategy for the Design of Anticancer Agents for Extracranial Pediatric Solid Tumors Treatment. Molecules 2023; 28:molecules28083356. [PMID: 37110590 PMCID: PMC10145344 DOI: 10.3390/molecules28083356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 04/05/2023] [Accepted: 04/07/2023] [Indexed: 04/29/2023] Open
Abstract
Recent scientific data recognize the B7-H3 checkpoint molecule as a potential target for immunotherapy of pediatric solid tumors (PSTs). B7-H3 is highly expressed in extracranial PSTs such as neuroblastoma, rhabdomyosarcoma, nephroblastoma, osteosarcoma, and Ewing sarcoma, whereas its expression is absent or very low in normal tissues and organs. The influence of B7-H3 on the biological behavior of malignant solid neoplasms of childhood is expressed through different molecular mechanisms, including stimulation of immune evasion and tumor invasion, and cell-cycle disruption. It has been shown that B7-H3 knockdown decreased tumor cell proliferation and migration, suppressed tumor growth, and enhanced anti-tumor immune response in some pediatric solid cancers. Antibody-drug conjugates targeting B7-H3 exhibited profound anti-tumor effects against preclinical models of pediatric solid malignancies. Moreover, B7-H3-targeting chimeric antigen receptor (CAR)-T cells demonstrated significant in vivo activity against different xenograft models of neuroblastoma, Ewing sarcoma, and osteosarcoma. Finally, clinical studies demonstrated the potent anti-tumor activity of B7-H3-targeting antibody-radioimmunoconjugates in metastatic neuroblastoma. This review summarizes the established data from various PST-related studies, including in vitro, in vivo, and clinical research, and explains all the benefits and potential obstacles of targeting B7-H3 by novel immunotherapeutic agents designed to treat malignant extracranial solid tumors of childhood.
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Affiliation(s)
- Petar Rasic
- Department of Abdominal Surgery, Mother and Child Health Care Institute of Serbia "Dr. Vukan Cupic", 11000 Belgrade, Serbia
| | - Marija Jeremic
- Institute of Medical and Clinical Biochemistry, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia
| | - Rada Jeremic
- Institute of Medical Physiology "Richard Burian", Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia
| | - Marija Dusanovic Pjevic
- Institute of Human Genetics, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia
| | - Milica Rasic
- Institute of Human Genetics, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia
| | - Slavisa M Djuricic
- Department of Clinical Pathology, Mother and Child Health Care Institute of Serbia "Dr. Vukan Cupic", 11000 Belgrade, Serbia
- Faculty of Medicine, University of Banja Luka, 78000 Banja Luka, Bosnia and Herzegovina
| | - Maja Milickovic
- Department of Abdominal Surgery, Mother and Child Health Care Institute of Serbia "Dr. Vukan Cupic", 11000 Belgrade, Serbia
- Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia
| | - Miroslav Vukadin
- Department of Abdominal Surgery, Mother and Child Health Care Institute of Serbia "Dr. Vukan Cupic", 11000 Belgrade, Serbia
| | - Tanja Mijovic
- Department of Abdominal Surgery, Mother and Child Health Care Institute of Serbia "Dr. Vukan Cupic", 11000 Belgrade, Serbia
| | - Djordje Savic
- Department of Abdominal Surgery, Mother and Child Health Care Institute of Serbia "Dr. Vukan Cupic", 11000 Belgrade, Serbia
- Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia
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Kovacevic S, Ivanov M, Zivotic M, Brkic P, Miloradovic Z, Jeremic R, Mihailovic-Stanojevic N, Vajic UJ, Karanovic D, Jovovic D, Nesovic Ostojic J. Immunohistochemical Analysis of 4-HNE, NGAL, and HO-1 Tissue Expression after Apocynin Treatment and HBO Preconditioning in Postischemic Acute Kidney Injury Induced in Spontaneously Hypertensive Rats. Antioxidants (Basel) 2021; 10:antiox10081163. [PMID: 34439411 PMCID: PMC8388865 DOI: 10.3390/antiox10081163] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 07/15/2021] [Accepted: 07/16/2021] [Indexed: 01/07/2023] Open
Abstract
Oxidative stress has been considered as a central aggravating factor in the development of postischemic acute kidney injury (AKI). The aim of this study was to perform the immunohistochemical analysis of 4-hydroxynonenal (4-HNE), neutrophil gelatinase-associated lipocalin (NGAL), and heme oxygenase-1 (HO-1) tissue expression after apocynin (APO) treatment and hyperbaric oxygenation (HBO) preconditioning, applied as single or combined protocol, in postischemic acute kidney injury induced in spontaneously hypertensive rats (SHR). Twenty-four hours before AKI induction, HBO preconditioning was carried out by exposing to pure oxygen (2.026 bar) twice a day, for 60 min in two consecutive days. Acute kidney injury was induced by removal of the right kidney while the left renal artery was occluded for 45 min by atraumatic clamp. Apocynin was applied in a dose of 40 mg/kg body weight, intravenously, 5 min before reperfusion. We showed increased 4-HNE renal expression in postischemic AKI compared to Sham-operated (SHAM) group. Apocynin treatment, with or without HBO preconditioning, improved creatinine and phosphate clearances, in postischemic AKI. This improvement in renal function was accompanied with decreased 4-HNE, while HO-1 kidney expression restored close to the control group level. NGAL renal expression was also decreased after apocynin treatment, and HBO preconditioning, with or without APO treatment. Considering our results, we can say that 4-HNE tissue expression can be used as a marker of oxidative stress in postischemic AKI. On the other hand, apocynin treatment and HBO preconditioning reduced oxidative damage, and this protective effect might be expected even in experimental hypertensive condition.
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Affiliation(s)
- Sanjin Kovacevic
- Department of Pathophysiology, Medical Faculty, University of Belgrade, 11000 Belgrade, Serbia;
| | - Milan Ivanov
- Department of Cardiovascular Physiology, Institute for Medical Research, University of Belgrade, 11129 Belgrade, Serbia; (M.I.); (Z.M.); (N.M.-S.); (U.J.V.); (D.K.); (D.J.)
| | - Maja Zivotic
- Institute of Pathology, Medical Faculty, University of Belgrade, 11000 Belgrade, Serbia;
| | - Predrag Brkic
- Department of Medical Physiology, Medical Faculty, University of Belgrade, 11000 Belgrade, Serbia; (P.B.); (R.J.)
| | - Zoran Miloradovic
- Department of Cardiovascular Physiology, Institute for Medical Research, University of Belgrade, 11129 Belgrade, Serbia; (M.I.); (Z.M.); (N.M.-S.); (U.J.V.); (D.K.); (D.J.)
| | - Rada Jeremic
- Department of Medical Physiology, Medical Faculty, University of Belgrade, 11000 Belgrade, Serbia; (P.B.); (R.J.)
| | - Nevena Mihailovic-Stanojevic
- Department of Cardiovascular Physiology, Institute for Medical Research, University of Belgrade, 11129 Belgrade, Serbia; (M.I.); (Z.M.); (N.M.-S.); (U.J.V.); (D.K.); (D.J.)
| | - Una Jovana Vajic
- Department of Cardiovascular Physiology, Institute for Medical Research, University of Belgrade, 11129 Belgrade, Serbia; (M.I.); (Z.M.); (N.M.-S.); (U.J.V.); (D.K.); (D.J.)
| | - Danijela Karanovic
- Department of Cardiovascular Physiology, Institute for Medical Research, University of Belgrade, 11129 Belgrade, Serbia; (M.I.); (Z.M.); (N.M.-S.); (U.J.V.); (D.K.); (D.J.)
| | - Djurdjica Jovovic
- Department of Cardiovascular Physiology, Institute for Medical Research, University of Belgrade, 11129 Belgrade, Serbia; (M.I.); (Z.M.); (N.M.-S.); (U.J.V.); (D.K.); (D.J.)
| | - Jelena Nesovic Ostojic
- Department of Pathophysiology, Medical Faculty, University of Belgrade, 11000 Belgrade, Serbia;
- Correspondence: ; Tel./Fax: +381-11-2685-340
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Kovacevic S, Ivanov M, Miloradovic Z, Brkic P, Vajic UJ, Zivotic M, Jeremic R, Mihailovic-Stanojevic N, Jovovic D, Karanovic D, Nesovic - Ostojic J. P0551THE EFFECTS OF HYPERBARIC OXYGEN PRECONDITIONING AND APOCYNIN TREATMENT IN POSTISCHEMIC ACUTE KIDNEY INJURY INDUCED IN SPONTANEOUSLY HYPERTENSIVE RATS. Nephrol Dial Transplant 2020. [DOI: 10.1093/ndt/gfaa142.p0551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Background and Aims
Acute kidney injury (AKI) is associated with significant in-hospital morbidity and mortality, particularly in those admitted to the Intensive care units, where mortality rates may exceed 50%. Besides increased mortality rates, there are chronic consequences that carry high risk of developing or exacerbating chronic kidney disease and accelerated development of the end-stage renal disease. Renal ischemia/reperfusion injury is a common cause of AKI and hypertension might contribute to the increased incidence of AKI. The purpose of this study was to investigate the effects of combined hyperbaric oxygen (HBO) preconditioning and apocynin treatment on kidney hemodynamics, function and structure in spontaneously hypertensive rats (SHR) after renal ischemia reperfusion injury.
Method
Male SHR were randomly selected in three experimental groups: sham-operated group (SHAM, n=9), AKI control group (AKI, n=11) and AKI group with HBO preconditioning and apocynin treatment (AKI+APO+HBO, n=13). HBO preconditioning was performed by exposing to pure oxygen (2.026 bar) twice a day for two consecutive days for 60 minutes and day before AKI induction. All surgical procedures were performed in anaesthetized rats and AKI was induced by removal of the right kidney and atraumatic clamp occlusion of the left renal artery for 45 minutes. NADPH oxidase inhibitor, apocynin (40 mg/kg b.m., intravenously) was applied as a bolus injection 5 minutes before clamp removal. All hemodynamic parameters were measured 24 hours after reperfusion. After hemodynamic measurements, blood samples were collected and used for further analysis. Animals were sacrificed by pentobarbital overdose injection. Kidney tissue was removed and then prepared for histological examination.
Results
AKI significantly increased renal vascular resistance (RVR, p<0.001) and reduced renal blood flow (RBF, p<0.001), which were significantly improved in group with HBO preconditioning with apocynin treatment (RVR, p<0.05; RBF, p<0,01). AKI induction significantly increased plasma creatinine (p<0.001), urea (p<0.001), phosphate (p<0.001) levels. Remarkable improvement, with decrease in creatinine (p<0.001), urea (p<0.01) and phosphate (p<0.001) levels was observed in treated group. While AKI induction significantly increased plasma KIM – 1 levels (p<0.001), HBO preconditioning with apocynin treatment decreased its levels (p<0.05). Considering renal morphology, in SHAM operated rats, normal morphology of glomeruli, tubulointerstitium, and blood vessels were observed including rare kidney specimens with a few PAS positive casts in the lumen of the tubules. In animals with AKI significant morphological alterations were present: tubular cells necrosis, dilatation of certain segments of the proximal and distal tubules, mostly with loss of brush-border. The most notable changes were present in the cortico-medullary zone, where the broad areas of tubular necrosis and a large number of PAS positive casts in the collecting ducts were observed. In treated animals degrees of morphological changes were significantly lower compared to AKI control. There were reduced tubular dilatation, tubular necrosis in the cortico-medullary zone and PAS positive cast formation.
Conclusion
HBO preconditioning and apocynin treatment improve renal hemodynamics, function and in SHR which suffer AKI. These results suggest that it is reasonable to assume that HBO preconditioning and NADPH oxidase inhibition potentially may have beneficial effects, but further comprehensive experimental and clinical studies are needed to confirm these promising results.
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Affiliation(s)
- Sanjin Kovacevic
- Faculty of Medicine, University of Belgrade, Department of Pathophysiology, Belgrade, Serbia
| | - Milan Ivanov
- Institute for Medical Research, University of Belgrade, Department of Cardiovascular Physiology, Belgrade, Serbia
| | - Zoran Miloradovic
- Institute for Medical Research, University of Belgrade, Department of Cardiovascular Physiology, Belgrade, Serbia
| | - Predrag Brkic
- Medical Faculty, University of Belgrade, Department of Medical Physiology, Belgrade, Serbia
| | - Una-Jovana Vajic
- Institute for Medical Research, University of Belgrade, Department of Cardiovascular Physiology, Belgrade, Serbia
| | - Maja Zivotic
- Medical Faculty, University of Belgrade, Department of Pathology, Belgrade, Serbia
| | - Rada Jeremic
- Medical Faculty, University of Belgrade, Department of Medical Physiology, Belgrade, Serbia
| | - Nevena Mihailovic-Stanojevic
- Institute for Medical Research, University of Belgrade, Department of Cardiovascular Physiology, Belgrade, Serbia
| | - Djurdjica Jovovic
- Institute for Medical Research, University of Belgrade, Department of Cardiovascular Physiology, Belgrade, Serbia
| | - Danijela Karanovic
- Institute for Medical Research, University of Belgrade, Department of Cardiovascular Physiology, Belgrade, Serbia
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Pantic I, Jeremic R, Dacic S, Pekovic S, Pantic S, Djelic M, Vitic Z, Brkic P, Brodski C. Gray-Level Co-Occurrence Matrix Analysis of Granule Neurons of the Hippocampal Dentate Gyrus Following Cortical Injury. Microsc Microanal 2020; 26:166-172. [PMID: 31948501 DOI: 10.1017/s143192762000001x] [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] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Traumatic brain injury (TBI) is a main cause of death and disabilities in young adults. Although learning and memory impairments are a major clinical manifestation of TBI, the consequences of TBI on the hippocampus are still not well understood. In particular, how lesions to the sensorimotor cortex damage the hippocampus, to which it is not directly connected, is still elusive. Here, we study the effects of sensorimotor cortex ablation (SCA) on the hippocampal dentate gyrus, by applying a highly sensitive gray-level co-occurrence matrix (GLCM) analysis. Using GLCM analysis of granule neurons, we discovered, in our TBI paradigm, subtle changes in granule cell (GC) morphology, including textual uniformity, contrast, and variance, which is not detected by conventional microscopy. We conclude that sensorimotor cortex trauma leads to specific changes in the hippocampus that advance our understanding of the cellular underpinnings of cognitive impairments in TBI. Moreover, we identified GLCM analysis as a highly sensitive method to detect subtle changes in the GC layers that is expected to significantly improve further studies investigating the impact of TBI on hippocampal neuropathology.
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Affiliation(s)
- Igor Pantic
- Faculty of Medicine, Institute of Medical Physiology, University of Belgrade, Visegradska 26/II, RS-11129Belgrade, Serbia
- University of Haifa, 199 Abba Hushi Blvd., Mount Carmel, Haifa, IL-3498838, Israel
| | - Rada Jeremic
- Faculty of Medicine, Institute of Medical Physiology, University of Belgrade, Visegradska 26/II, RS-11129Belgrade, Serbia
| | - Sanja Dacic
- Department for General Physiology and Biophysics, Institute of Physiology and Biochemistry "Ivan Djaja", Faculty of Biology, University of Belgrade, Studentski trg 16, 11000Belgrade, Serbia
| | - Sanja Pekovic
- Department of Neurobiology, Institute for Biological Research "Sinisa Stankovic"- National Institute of Republic of Serbia, University of Belgrade, Blvd despota Stefana 142, Belgrade, Serbia
| | - Senka Pantic
- School of Medicine, Institute of Histology and Embryology, University of Belgrade, Visegradska 26/II, RS-11129Belgrade, Serbia
| | - Marina Djelic
- Faculty of Medicine, Institute of Medical Physiology, University of Belgrade, Visegradska 26/II, RS-11129Belgrade, Serbia
| | - Zagorka Vitic
- Department of Physiology and Cell Biology, Zlotowski Center for Neuroscience, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beersheba, Israel
| | - Predrag Brkic
- Faculty of Medicine, Institute of Medical Physiology, University of Belgrade, Visegradska 26/II, RS-11129Belgrade, Serbia
| | - Claude Brodski
- Department of Physiology and Cell Biology, Zlotowski Center for Neuroscience, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beersheba, Israel
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Kovacevic S, Ivanov M, Miloradovic Z, Brkic P, Vajic UJ, Zivotic M, Mihailovic-Stanojevic N, Jovovic D, Karanovic D, Jeremic R, Nesovic-Ostojic J. Hyperbaric oxygen preconditioning and the role of NADPH oxidase inhibition in postischemic acute kidney injury induced in spontaneously hypertensive rats. PLoS One 2020; 15:e0226974. [PMID: 31914135 PMCID: PMC6948727 DOI: 10.1371/journal.pone.0226974] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Accepted: 12/09/2019] [Indexed: 12/14/2022] Open
Abstract
Renal ischemia/reperfusion injury is a common cause of acute kidney injury (AKI) and hypertension might contribute to the increased incidence of AKI. The purpose of this study was to investigate the effects of single and combined hyperbaric oxygen (HBO) preconditioning and NADPH oxidase inhibition on oxidative stress, kidney function and structure in spontaneously hypertensive rats (SHR) after renal ischemia reperfusion injury. HBO preconditioning was performed by exposing to pure oxygen (2.026 bar) twice a day for two consecutive days for 60 minutes, and 24h before AKI induction. For AKI induction, the right kidney was removed and ischemia was performed by clamping the left renal artery for 45 minutes. NADPH oxidase inhibition was induced by apocynin (40 mg/kg b.m., intravenously) 5 minutes before reperfusion. AKI significantly increased renal vascular resistance and reduced renal blood flow, which were significantly improved after apocynin treatment. Also, HBO preconditioning, with or without apocynin treatment showed improvement on renal hemodynamics. AKI significantly increased plasma creatinine, urea, phosphate levels and lipid peroxidation in plasma. Remarkable improvement, with decrease in creatinine, urea and phosphate levels was observed in all treated groups. HBO preconditioning, solitary or with apocynin treatment decreased lipid peroxidation in plasma caused by AKI induction. Also, combined with apocynin, it increased catalase activity and solitary, glutathione reductase enzyme activity in erythrocytes. While AKI induction significantly increased plasma KIM– 1 levels, HBO preconditioning, solitary or with apocynin decreased its levels. Considering renal morphology, significant morphological alterations present after AKI induction were significantly improved in all treated groups with reduced tubular dilatation, tubular necrosis in the cortico-medullary zone and PAS positive cast formation. Our results reveal that NADPH oxidase inhibition and hyperbaric oxygen preconditioning, with or without NADPH oxidase inhibition may have beneficial effects, but their protective role should be evaluated in further studies.
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Affiliation(s)
- Sanjin Kovacevic
- Department of Pathophysiology, Medical Faculty, University of Belgrade, Belgrade, Serbia
- * E-mail: (SK); (JNO)
| | - Milan Ivanov
- Institute for Medical Research, Department of Cardiovascular Physiology, University of Belgrade, Belgrade, Serbia
| | - Zoran Miloradovic
- Institute for Medical Research, Department of Cardiovascular Physiology, University of Belgrade, Belgrade, Serbia
| | - Predrag Brkic
- Department of Medical Physiology, Medical Faculty, University of Belgrade, Belgrade, Serbia
| | - Una Jovana Vajic
- Institute for Medical Research, Department of Cardiovascular Physiology, University of Belgrade, Belgrade, Serbia
| | - Maja Zivotic
- Department of Pathology, Medical Faculty, University of Belgrade, Belgrade, Serbia
| | - Nevena Mihailovic-Stanojevic
- Institute for Medical Research, Department of Cardiovascular Physiology, University of Belgrade, Belgrade, Serbia
| | - Djurdjica Jovovic
- Institute for Medical Research, Department of Cardiovascular Physiology, University of Belgrade, Belgrade, Serbia
| | - Danijela Karanovic
- Institute for Medical Research, Department of Cardiovascular Physiology, University of Belgrade, Belgrade, Serbia
| | - Rada Jeremic
- Department of Medical Physiology, Medical Faculty, University of Belgrade, Belgrade, Serbia
| | - Jelena Nesovic-Ostojic
- Department of Pathophysiology, Medical Faculty, University of Belgrade, Belgrade, Serbia
- * E-mail: (SK); (JNO)
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Ivanov M, Brkic P, Vajic UJ, Mihailovic-Stanojevic N, Milacic D, Jovovic D, Karanovic D, Djelic M, Jeremic R, Miloradovic Z. Hyperbaric oxygenation protects the kidney against ischemia-reperfusion injury. Undersea Hyperb Med 2020; 47:21-30. [PMID: 32176943 DOI: 10.22462/01.03.2020.3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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] [Indexed: 06/10/2023]
Abstract
BACKGROUND Acute kidney injury (AKI) as a consequence of ischemia is a common clinical event that can lead to unacceptably high morbidity and mortality. Hyperbaric oxygen (HBO2) preconditioning has been shown to prevent ischemia-reperfusion injury (IRI) in different tissues. OBJECTIVES The aim of our study was to compare the effects of HBO2 preconditioning on renal hemodynamics, kidney function and oxidative stress in normotensive and spontaneously hypertensive rats that suffered kidney IRI. METHODS An experiment was performed on Wistar (normotensive) and spontaneously hypertensive rats (SHR). The animals were divided into the following experimental groups: sham-operated rats and rats with or without HBO2 preconditioning 24 hours before post-ischemic AKI induction. Treated rats were placed into experimental HBO2 chambers and exposed to pure oxygen twice a day for two consecutive days (2.026 bar of oxygen) for 60 minutes. AKI was performed the next morning. The right kidney was removed and the renal ischemia was performed by clamping the left renal artery for 45 minutes. RESULTS In this study, HBO2 preconditioning significantly improved disturbed renal hemodynamics, major markers of kidney function in plasma (creatinine, urea and phosphate) as well as antioxidant enzymes (superoxide dismutase and catalase) activities in erythrocytes after AKI induction. Also, HBO2 preconditioning decreased lipid peroxidation in plasma after ischemic AKI. Positive effects were observed in both strains of rats. CONCLUSIONS Our results suggest that HBO2 treatment improves renal hemodynamic and kidney function and decreases oxidative stress of Wistar and SHR rats with an AKI episode. Furthermore, it also implies that pre-existing hypertension does not affect the beneficial effects of HBO2 preconditioning.
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Affiliation(s)
- Milan Ivanov
- Department of Cardiovascular Physiology, Institute for Medical Research, University of Belgrade, Belgrade, Serbia
| | - Predrag Brkic
- Institute of Medical Physiology, School of Medicine, University of Belgrade, Belgrade Serbia
| | - Una-Jovana Vajic
- Department of Cardiovascular Physiology, Institute for Medical Research, University of Belgrade, Belgrade, Serbia
| | - Nevena Mihailovic-Stanojevic
- Department of Cardiovascular Physiology, Institute for Medical Research, University of Belgrade, Belgrade, Serbia
| | - Davorka Milacic
- Department of Hyperbaric Medicine, Clinical Center Zemun, Zemun, Serbia
| | - Djurdjica Jovovic
- Department of Cardiovascular Physiology, Institute for Medical Research, University of Belgrade, Belgrade, Serbia
| | - Danijela Karanovic
- Department of Cardiovascular Physiology, Institute for Medical Research, University of Belgrade, Belgrade, Serbia
| | - Marina Djelic
- Institute of Medical Physiology, School of Medicine, University of Belgrade, Belgrade Serbia
| | - Rada Jeremic
- Institute of Medical Physiology, School of Medicine, University of Belgrade, Belgrade Serbia
| | - Zoran Miloradovic
- Department of Cardiovascular Physiology, Institute for Medical Research, University of Belgrade, Belgrade, Serbia
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