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Borović Šunjić S, Jaganjac M, Vlainić J, Halasz M, Žarković N. Lipid Peroxidation-Related Redox Signaling in Osteosarcoma. Int J Mol Sci 2024; 25:4559. [PMID: 38674143 PMCID: PMC11050283 DOI: 10.3390/ijms25084559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Revised: 04/12/2024] [Accepted: 04/17/2024] [Indexed: 04/28/2024] Open
Abstract
Oxidative stress and lipid peroxidation play important roles in numerous physiological and pathological processes, while the bioactive products of lipid peroxidation, lipid hydroperoxides and reactive aldehydes, act as important mediators of redox signaling in normal and malignant cells. Many types of cancer, including osteosarcoma, express altered redox signaling pathways. Such redox signaling pathways protect cancer cells from the cytotoxic effects of oxidative stress, thus supporting malignant transformation, and eventually from cytotoxic anticancer therapies associated with oxidative stress. In this review, we aim to explore the status of lipid peroxidation in osteosarcoma and highlight the involvement of lipid peroxidation products in redox signaling pathways, including the involvement of lipid peroxidation in osteosarcoma therapies.
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Affiliation(s)
- Suzana Borović Šunjić
- Laboratory for Oxidative Stress, Division of Molecular Medicine, Ruder Boskovic Institute, Bijenicka 54, 10000 Zagreb, Croatia; (M.J.); (J.V.); (M.H.)
| | | | | | | | - Neven Žarković
- Laboratory for Oxidative Stress, Division of Molecular Medicine, Ruder Boskovic Institute, Bijenicka 54, 10000 Zagreb, Croatia; (M.J.); (J.V.); (M.H.)
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2
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Smyth SP, Nixon B, Skerrett-Byrne DA, Burke ND, Bromfield EG. Building an Understanding of Proteostasis in Reproductive Cells: The Impact of Reactive Carbonyl Species on Protein Fate. Antioxid Redox Signal 2024. [PMID: 38115641 DOI: 10.1089/ars.2023.0314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
Significance: Stringent regulation of protein homeostasis pathways, under both physiological and pathological conditions, is necessary for the maintenance of proteome fidelity and optimal cell functioning. However, when challenged by endogenous or exogenous stressors, these proteostasis pathways can become dysregulated with detrimental consequences for protein fate, cell survival, and overall organism health. Most notably, there are numerous somatic pathologies associated with a loss of proteostatic regulation, including neurodegenerative disorders, type 2 diabetes, and some cancers. Recent Advances: Lipid oxidation-derived reactive carbonyl species (RCS), such as 4-hydroxynonenal (4HNE) and malondialdehyde, are relatively underappreciated purveyors of proteostatic dysregulation, which elicit their effects via the nonenzymatic post-translational modification of proteins. Emerging evidence suggests that a subset of germline proteins can serve as substrates for 4HNE modification. Among these, prevalent targets include succinate dehydrogenase, heat shock protein A2 and A-kinase anchor protein 4, all of which are intrinsically associated with fertility. Critical Issues: Despite growing knowledge in this field, the RCS adductomes of spermatozoa and oocytes are yet to be comprehensively investigated. Furthermore, the manner by which RCS-mediated adduction impacts protein fate and drives cellular responses, such as protein aggregation, requires further examination in the germline. Given that RCS-protein adduction has been attributed a role in infertility, there has been sparked research investment into strategies to prevent lipid peroxidation in germ cells. Future Directions: An increased depth of knowledge regarding the mechanisms and substrates of RCS-mediated protein modification in reproductive cells may reveal important targets for the development of novel therapies to improve fertility and pregnancy outcomes for future generations.
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Affiliation(s)
- Shannon P Smyth
- Infertility and Reproduction Research Program, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
- School of Environmental and Life Sciences, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, New South Wales, Australia
- Bio21 Institute, School of BioSciences, Faculty of Science, University of Melbourne, Parkville, Victoria, Australia
| | - Brett Nixon
- Infertility and Reproduction Research Program, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
- School of Environmental and Life Sciences, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, New South Wales, Australia
| | - David A Skerrett-Byrne
- Infertility and Reproduction Research Program, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
- School of Environmental and Life Sciences, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, New South Wales, Australia
| | - Nathan D Burke
- Infertility and Reproduction Research Program, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
- School of Environmental and Life Sciences, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, New South Wales, Australia
- Bio21 Institute, School of BioSciences, Faculty of Science, University of Melbourne, Parkville, Victoria, Australia
| | - Elizabeth G Bromfield
- Infertility and Reproduction Research Program, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
- School of Environmental and Life Sciences, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, New South Wales, Australia
- Bio21 Institute, School of BioSciences, Faculty of Science, University of Melbourne, Parkville, Victoria, Australia
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Iuchi K, Fukasawa M, Murakami T, Hisatomi H. Cold atmospheric nitrogen plasma induces metal-initiated cell death by cell membrane rupture and mitochondrial perturbation. Cell Biochem Funct 2023; 41:687-695. [PMID: 37322606 DOI: 10.1002/cbf.3823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 05/06/2023] [Accepted: 06/03/2023] [Indexed: 06/17/2023]
Abstract
Cold atmospheric plasma (CAP) is a novel biomedical tool used for cancer therapy. A device using nitrogen gas (N2 CAP) produced CAP that induced cell death through the production of reactive nitrogen species and an increase in intracellular calcium. In this study, we investigated the effect of N2 CAP-irradiation on cell membrane and mitochondrial function in human embryonic kidney cell line 293T. We investigated whether iron is involved in N2 CAP-induced cell death, as deferoxamine methanesulfonate (an iron chelator) inhibits this process. We found that N2 CAP induced cell membrane disturbance and loss of mitochondrial membrane potential in an irradiation time-dependent manner. BAPTA-AM, a cell-permeable calcium chelator, inhibited N2 CAP-induced loss of mitochondrial membrane potential. These results suggest that disruption of intracellular metal homeostasis was involved in N2 CAP-induced cell membrane rupture and mitochondrial dysfunction. Moreover, N2 CAP irradiation generated a time-dependent production of peroxynitrite. However, lipid-derived radicals are unrelated to N2 CAP-induced cell death. Generally, N2 CAP-induced cell death is driven by the complex interaction between metal movement and reactive oxygen and nitrogen species produced by N2 CAP.
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Affiliation(s)
- Katsuya Iuchi
- Department of Materials and Life Science, Faculty of Science and Technology, Seikei University, Tokyo, Japan
- Department of Molecular Diagnosis and Cancer Prevention, Saitama Cancer Center, Saitama, Japan
| | - Mami Fukasawa
- Department of Materials and Life Science, Faculty of Science and Technology, Seikei University, Tokyo, Japan
| | - Tomoyuki Murakami
- Department of Systems Design Engineering, Faculty of Science and Technology, Seikei University, Tokyo, Japan
| | - Hisashi Hisatomi
- Department of Materials and Life Science, Faculty of Science and Technology, Seikei University, Tokyo, Japan
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4
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Jaganjac M, Zarkovic N. Lipid Peroxidation Linking Diabetes and Cancer: The Importance of 4-Hydroxynonenal. Antioxid Redox Signal 2022; 37:1222-1233. [PMID: 36242098 DOI: 10.1089/ars.2022.0146] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Significance: It is commonly believed that diabetes mellitus may be associated with cancer. Hence, diabetic patients are at higher risk for hepatocellular carcinoma, pancreatic cancer, colorectal cancer, and breast cancer, but the mechanisms that may link these two severe diseases are not well understood. Recent Advances: A number of factors have been suggested to promote tumorigenesis in diabetic patients, including insulin resistance, hyperglycemia, dyslipidemia, inflammation, and elevated insulin-like growth factor-1 (IGF-1), which may also promote pro-oxidants, and thereby alter redox homeostasis. The consequent oxidative stress associated with lipid peroxidation appears to be a possible pathogenic link between cancer and diabetes. Critical Issues: Having summarized the above aspects of diabetes and cancer pathology, we propose that the major bioactive product of oxidative degradation of polyunsaturated fatty acids (PUFAs), the reactive aldehyde 4-hydroxynonenal (4-HNE), which is also considered a second messenger of free radicals, may be the key pathogenic factor linking diabetes and cancer. Future Directions: Because the bioactivities of 4-HNE are cell-type and concentration-dependent, are often associated with inflammation, and are involved in signaling processes that regulate antioxidant activities, proliferation, differentiation, and apoptosis, we believe that further research in this direction could reveal options for better control of diabetes and cancer. Controlling the production of 4-HNE to avoid its cytotoxicity to normal but not cancer cells while preventing its diabetogenic activities could be an important aspect of modern integrative biomedicine. Antioxid. Redox Signal. 37, 1222-1233.
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Affiliation(s)
- Morana Jaganjac
- Laboratory for Oxidative Stress, Division of Molecular Medicine, Ruder Boskovic Institute, Zagreb, Croatia
| | - Neven Zarkovic
- Laboratory for Oxidative Stress, Division of Molecular Medicine, Ruder Boskovic Institute, Zagreb, Croatia
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Jabłońska – Trypuć A, Wiater J. Protective effect of plant compounds in pesticides toxicity. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2022; 20:1035-1045. [PMID: 36406617 PMCID: PMC9672277 DOI: 10.1007/s40201-022-00823-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 06/27/2022] [Accepted: 08/09/2022] [Indexed: 06/16/2023]
Abstract
INTRODUCTION The relationship between pesticide exposure and the occurrence of many chronic diseases, including cancer, is confirmed by literature data. METHODS In this review, through the analysis of more than 70 papers, we explore an increase in oxidative stress level caused by exposure to environmental pollutants and the protective effects of plant-origin antioxidants. RESULTS AND DISCUSSION One of the molecular mechanisms, by which pesticides affect living organisms is the induction of oxidative stress. However, recently many plant-based dietary ingredients with antioxidant properties have been considered as a chemopreventive substances due to their ability to remove free radicals. Such a food component must meet several conditions: eliminate free radicals, be easily absorbed and function at an appropriate physiological level. Its main function is to maintain the redox balance and minimize the cellular damage caused by ROS. Therefore, it should be active in aqueous solutions and membrane domains. These properties are characteristic for phenolic compounds and selected plant hormones. Phenolic compounds have proven antioxidant properties, while increasing number of compounds from the group of plant hormones with a very diverse chemical structure turn out to act as antioxidants, being potential food ingredients that can eliminate negative effects of pesticides.
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Affiliation(s)
- Agata Jabłońska – Trypuć
- Faculty of Civil Engineering and Environmental Sciences, Division of Chemistry, Biology and Biotechnology, Bialystok University of Technology, Wiejska 45E Street, 15-351 Białystok, Białystok, Poland
| | - Józefa Wiater
- Faculty of Civil Engineering and Environmental Sciences, Department of Agri-Food Engineering and Environmental Management, Bialystok University of Technology, Wiejska 45E Street, 15-351 Białystok, Białystok, Poland
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Mukherjee S, Dutta A, Chakraborty A. The interaction of oxidative stress with MAPK, PI3/AKT, NF-κB, and DNA damage kinases influences the fate of γ-radiation-induced bystander cells. Arch Biochem Biophys 2022; 725:109302. [DOI: 10.1016/j.abb.2022.109302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 04/27/2022] [Accepted: 05/22/2022] [Indexed: 11/02/2022]
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Ramachandhiran D, Sankaranarayanan C, Murali R, Babukumar S, Vinothkumar V. β-Caryophyllene promotes oxidative stress and apoptosis in KB cells through activation of mitochondrial-mediated pathway - An in-vitro and in-silico study. Arch Physiol Biochem 2022; 128:148-162. [PMID: 31583906 DOI: 10.1080/13813455.2019.1669057] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Beta-caryophyllene (BCP), are natural bicyclic sesquiterpenes which are present in numerous plants worldwide. BCP has antioxidant, antimicrobial, and antifungal properties. Here, we studied its anticancer, anti-inflammatory, and cytotoxic effects. Cells treated with BCP, in a dose-dependent manner, exhibited morphological changes, showed lower cell growth, underwent apoptosis and lost the ability to metastasis through the suppression of NF-ҡ B via PI3K/AKT signalling pathway. These results elucidate that the inhibition of NF-ҡ B and PI3K/AKT is one of the most important mechanism by which BCP suppresses cancer cell proliferation and enhances apoptosis.
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Affiliation(s)
- Duraisamy Ramachandhiran
- Department of Biochemistry and Biotechnology, Faculty of Science, Annamalai University, Annamalainagar, India
| | | | - Raju Murali
- Department of Biochemistry and Biotechnology, Faculty of Science, Annamalai University, Annamalainagar, India
- Postgraduate and Research Department of Biochemistry, Government Arts College For Women, Krishnagiri, India
| | - Sukumar Babukumar
- Department of Biochemistry and Biotechnology, Faculty of Science, Annamalai University, Annamalainagar, India
| | - Veerasamy Vinothkumar
- Department of Biochemistry and Biotechnology, Faculty of Science, Annamalai University, Annamalainagar, India
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Zarkovic N, Jakovcevic A, Mataic A, Jaganjac M, Vukovic T, Waeg G, Zarkovic K. Post-mortem Findings of Inflammatory Cells and the Association of 4-Hydroxynonenal with Systemic Vascular and Oxidative Stress in Lethal COVID-19. Cells 2022; 11:cells11030444. [PMID: 35159254 PMCID: PMC8834180 DOI: 10.3390/cells11030444] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/19/2022] [Accepted: 01/24/2022] [Indexed: 12/20/2022] Open
Abstract
A recent comparison of clinical and inflammatory parameters, together with biomarkers of oxidative stress, in patients who died from aggressive COVID-19 and survivors suggested that the lipid peroxidation product 4-hydroxynonenal (4-HNE) might be detrimental in lethal SARS-CoV-2 infection. The current study further explores the involvement of inflammatory cells, systemic vascular stress, and 4-HNE in lethal COVID-19 using specific immunohistochemical analyses of the inflammatory cells within the vital organs obtained by autopsy of nine patients who died from aggressive SAR-CoV-2 infection. Besides 4-HNE, myeloperoxidase (MPO) and mitochondrial superoxide dismutase (SOD2) were analyzed alongside standard leukocyte biomarkers (CDs). All the immunohistochemical slides were simultaneously prepared for each analyzed biomarker. The results revealed abundant 4-HNE in the vital organs, but the primary origin of 4-HNE was sepsis-like vascular stress, not an oxidative burst of the inflammatory cells. In particular, inflammatory cells were often negative for 4-HNE, while blood vessels were always very strongly immunopositive, as was edematous tissue even in the absence of inflammatory cells. The most affected organs were the lungs with diffuse alveolar damage and the brain with edema and reactive astrocytes, whereas despite acute tubular necrosis, 4-HNE was not abundant in the kidneys, which had prominent SOD2. Although SOD2 in most cases gave strong immunohistochemical positivity similar to 4-HNE, unlike 4-HNE, it was always limited to the cells, as was MPO. Due to their differential expressions in blood vessels, inflammatory cells, and the kidneys, we think that SOD2 could, together with 4-HNE, be a potential link between a malfunctioning immune system, oxidative stress, and vascular stress in lethal COVID-19.
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Affiliation(s)
- Neven Zarkovic
- Laboratory for Oxidative Stress (LabOS), Ruder Boskovic Institute, HR-10000 Zagreb, Croatia; (M.J.); (T.V.)
- Correspondence:
| | - Antonia Jakovcevic
- Clinical Hospital Centre Zagreb, Division of Pathology, HR-10000 Zagreb, Croatia; (A.J.); (A.M.); (K.Z.)
| | - Ana Mataic
- Clinical Hospital Centre Zagreb, Division of Pathology, HR-10000 Zagreb, Croatia; (A.J.); (A.M.); (K.Z.)
| | - Morana Jaganjac
- Laboratory for Oxidative Stress (LabOS), Ruder Boskovic Institute, HR-10000 Zagreb, Croatia; (M.J.); (T.V.)
| | - Tea Vukovic
- Laboratory for Oxidative Stress (LabOS), Ruder Boskovic Institute, HR-10000 Zagreb, Croatia; (M.J.); (T.V.)
| | - Georg Waeg
- Institute of Molecular Biosciences, Karl Franzens University, A-8010 Graz, Austria;
| | - Kamelija Zarkovic
- Clinical Hospital Centre Zagreb, Division of Pathology, HR-10000 Zagreb, Croatia; (A.J.); (A.M.); (K.Z.)
- Division of Pathology, University of Zagreb School of Medicine, HR-10000 Zagreb, Croatia
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9
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Lavrova AV, Gretskaya NM, Bezuglov VV. Role of Oxidative Stress in the Etiology of Parkinson’s Disease: Advanced Therapeutic Products. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2021. [DOI: 10.1134/s1068162021050307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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Short Overview of Some Assays for the Measurement of Antioxidant Activity of Natural Products and Their Relevance in Dermatology. Molecules 2021; 26:molecules26175301. [PMID: 34500732 PMCID: PMC8433703 DOI: 10.3390/molecules26175301] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 08/25/2021] [Accepted: 08/25/2021] [Indexed: 12/19/2022] Open
Abstract
Impaired systemic redox homeostasis is implicated in the onset and development of various diseases, including skin diseases. Therefore, continuous search for natural products with antioxidant bioactivities applicable in biomedicine is attractive topic of general interest. Research efforts aiming to validate antioxidant potentials of natural products has led to the development of several assays based on various test principles. Hence, understanding the advantages and limitations of various assays is important for selection of assays useful to study antioxidant and related bioactivities of natural products of biomedical interest. This review paper gives a short overview on some chemical and cellular bioassays used to estimate the antioxidant activity of chosen natural products together with a brief overview on the use of natural products with antioxidant activities as adjuvant medicinal remedies in dermatology.
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11
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Lipid peroxidation in brain tumors. Neurochem Int 2021; 149:105118. [PMID: 34197897 DOI: 10.1016/j.neuint.2021.105118] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 04/15/2021] [Accepted: 06/24/2021] [Indexed: 12/20/2022]
Abstract
There is a lot of evidence showing that lipid peroxidation plays very important role in development of various diseases, including neurodegenerative diseases and brain tumors. Lipid peroxidation is achieved by two main pathways, by enzymatic or by non-enzymatic oxidation, respectively. In this paper, we focus on non-enzymatic, self-catalyzed chain reaction of poly-unsaturated fatty acid (PUFA) peroxidation generating reactive aldehydes, notably 4-hydroxynonenal (4-HNE), which acts as second messenger of free radicals and as growth regulating factor. It might originate from astrocytes as well as from blood vessels, even within the blood-brain barrier (BBB), which is in case of brain tumors transformed into the blood-brain-tumor barrier (BBTB). The functionality of the BBB is strongly affected by 4-HNE because it forms relatively stable protein adducts thus allowing the persistence and the spread of lipid peroxidation, as revealed by immunohistochemical findings. Because 4-HNE can act as a regulator of vital functions of normal and of malignant cells acting in the cell type- and concentration-dependent manners, the bioactivities of this product of lipid peroxidation be should further studied to reveal if it acts as a co-factor of carcinogenesis or as natural factor of defense against primary brain tumors and metastatic cancer.
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Sredoja Tisma V, Bulimbasic S, Galesic Ljubanovic D, Galesic K, Morovic-Vergles J, Mitrovic J, Uchida K, Tatzber F, Zarkovic N, Jaganjac M. The Onset of Systemic Oxidative Stress Associated with the Accumulation of Lipid Peroxidation Product Acrolein in the Skin of Patients with Small-Vessel Vasculitis. Molecules 2021; 26:molecules26082344. [PMID: 33920659 PMCID: PMC8073584 DOI: 10.3390/molecules26082344] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 04/02/2021] [Accepted: 04/13/2021] [Indexed: 12/11/2022] Open
Abstract
Small-vessel vasculitis (SVV) is the inflammation of the vessel wall that can result in hemorrhage and/or ischemia. Among the histological findings in SVV are increased infiltrating neutrophils, which, due to their oxidative burst and myeloperoxidase activity, release excessive reactive oxygen species, triggering a chain reaction of lipid peroxidation and yielding reactive aldehydes such as acrolein. The implication of oxidative stress in the pathogenesis of SVV was studied, focusing on acrolein immunohistochemistry in the affected skin vessels and systemic stress response. Samples from SVV patients and healthy subjects were collected and analyzed for total serum peroxides, total antioxidant capacity, inflammatory and immunological parameters, as well as for the presence of acrolein–protein adducts in the skin tissue specimens. The obtained data showed that systemic redox homeostasis and iron metabolism are altered in SVV patients. Possible biomarkers in the evaluation of oxidative status, disease activity and prevalence were indicated. Furthermore, a strong correlation between the accumulation of acrolein–protein adducts in the skin and the progression of the disease was revealed. Thus, the results of this study demonstrate that SVV is not only associated with systemic oxidative stress but also with tissue-specific oxidative stress that promotes acrolein formation and protein modification correlating with the severity of cutaneous vasculitis.
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Affiliation(s)
- Vesna Sredoja Tisma
- Polyclinic Department of Dermatology and Venereology, Dubrava University Hospital, 10040 Zagreb, Croatia;
| | - Stela Bulimbasic
- Department of Pathology and Cytology, University Hospital Centre Zagreb, 10000 Zagreb, Croatia;
| | - Danica Galesic Ljubanovic
- Department of Pathology, School of Medicine Zagreb, University of Zagreb, 10000 Zagreb, Croatia;
- Department of Nephropathology and Electron Microscopy, Dubrava University Hospital, 10040 Zagreb, Croatia
| | - Kresimir Galesic
- Division of Nephrology, Department of Internal Medicine, Dubrava University Hospital, University of Zagreb School of Medicine, 10040 Zagreb, Croatia;
| | - Jadranka Morovic-Vergles
- Division of Clinical Immunology, Allergology and Rheumatology, Department of Internal Medicine, Dubrava University Hospital, University of Zagreb School of Medicine, 10040 Zagreb, Croatia; (J.M.-V.); (J.M.)
| | - Josko Mitrovic
- Division of Clinical Immunology, Allergology and Rheumatology, Department of Internal Medicine, Dubrava University Hospital, University of Zagreb School of Medicine, 10040 Zagreb, Croatia; (J.M.-V.); (J.M.)
| | - Koji Uchida
- Laboratory of Food and Biodynamics, Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya 464-8601, Japan;
| | | | - Neven Zarkovic
- Laboratory for Oxidative Stress, Division of Molecular Medicine Rudjer Boskovic Institute, 10000 Zagreb, Croatia;
| | - Morana Jaganjac
- Laboratory for Oxidative Stress, Division of Molecular Medicine Rudjer Boskovic Institute, 10000 Zagreb, Croatia;
- Correspondence: ; Tel.: +385-1456-1017
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Al-Jaal B, Latiff A, Salama S, Hussain HM, Al-Thani NA, Al-Naimi N, Al-Qasmi N, Horvatovich P, Jaganjac M. Analysis of Multiple Mycotoxins in the Qatari Population and Their Relation to Markers of Oxidative Stress. Toxins (Basel) 2021; 13:toxins13040267. [PMID: 33917988 PMCID: PMC8068385 DOI: 10.3390/toxins13040267] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 04/06/2021] [Accepted: 04/06/2021] [Indexed: 11/16/2022] Open
Abstract
Mycotoxins are naturally occurring food toxins worldwide that can cause serious health effects. The measurement of mycotoxin biomarkers in biological fluids is needed to assess individuals' exposure. The aim of this study was to investigate the incidence of mycotoxins in the Qatari population. Serum samples from 412 adults and urinary samples from 559 adults were analyzed for the presence of mycotoxin biomarkers. Multimycotoxin approaches have been applied, using liquid chromatography mass spectrometry methods. Samples were further analyzed for the oxidative stress markers and compared with regard to the incidence of mycotoxins. The presence of mycotoxins was identified in 37% of serum samples and in less than 20% of urine samples. It was found that 88% of positive of the samples were positive for only one mycotoxin, while 12% of positive samples had two or more mycotoxins. Trichothecenes and zearalenone metabolites were most commonly detected mycotoxins, followed by aflatoxins, roquefortine C and mycophenolic acid. The presence of mycotoxins was found to positively correlate with oxidative stress markers. The obtained results illustrate the importance of mycotoxin biomonitoring studies in humans and the need to elucidate the underlying mechanisms of mycotoxin-induced toxicity.
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Affiliation(s)
- Belqes Al-Jaal
- Anti-Doping Lab Qatar, Sport City Road, Doha P.O. Box 27775, Qatar; (B.A.-J.); (S.S.); (H.M.H.); (N.A.A.-T.); (N.A.-N.); (N.A.-Q.)
| | - Aishah Latiff
- School of Pharmaceutical Sciences, University of Science Malaysia, Gelugor 11700, Pulau Pinang, Malaysia;
| | - Sofia Salama
- Anti-Doping Lab Qatar, Sport City Road, Doha P.O. Box 27775, Qatar; (B.A.-J.); (S.S.); (H.M.H.); (N.A.A.-T.); (N.A.-N.); (N.A.-Q.)
| | - Huda Mohamed Hussain
- Anti-Doping Lab Qatar, Sport City Road, Doha P.O. Box 27775, Qatar; (B.A.-J.); (S.S.); (H.M.H.); (N.A.A.-T.); (N.A.-N.); (N.A.-Q.)
| | - Noora Abdulaziz Al-Thani
- Anti-Doping Lab Qatar, Sport City Road, Doha P.O. Box 27775, Qatar; (B.A.-J.); (S.S.); (H.M.H.); (N.A.A.-T.); (N.A.-N.); (N.A.-Q.)
| | - Noor Al-Naimi
- Anti-Doping Lab Qatar, Sport City Road, Doha P.O. Box 27775, Qatar; (B.A.-J.); (S.S.); (H.M.H.); (N.A.A.-T.); (N.A.-N.); (N.A.-Q.)
| | - Noof Al-Qasmi
- Anti-Doping Lab Qatar, Sport City Road, Doha P.O. Box 27775, Qatar; (B.A.-J.); (S.S.); (H.M.H.); (N.A.A.-T.); (N.A.-N.); (N.A.-Q.)
| | - Peter Horvatovich
- Department of Analytical Biochemistry, Groningen Research Institute of Pharmacy, University of Groningen, 9713 AV Groningen, The Netherlands;
| | - Morana Jaganjac
- Division of Molecular Medicine, Rudjer Boskovic Institute, Bijenicka 54, 10000 Zagreb, Croatia
- Correspondence:
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14
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Jaganjac M, Milkovic L, Sunjic SB, Zarkovic N. The NRF2, Thioredoxin, and Glutathione System in Tumorigenesis and Anticancer Therapies. Antioxidants (Basel) 2020; 9:E1151. [PMID: 33228209 PMCID: PMC7699519 DOI: 10.3390/antiox9111151] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 11/16/2020] [Accepted: 11/17/2020] [Indexed: 12/24/2022] Open
Abstract
Cancer remains an elusive, highly complex disease and a global burden. Constant change by acquired mutations and metabolic reprogramming contribute to the high inter- and intratumor heterogeneity of malignant cells, their selective growth advantage, and their resistance to anticancer therapies. In the modern era of integrative biomedicine, realizing that a personalized approach could benefit therapy treatments and patients' prognosis, we should focus on cancer-driving advantageous modifications. Namely, reactive oxygen species (ROS), known to act as regulators of cellular metabolism and growth, exhibit both negative and positive activities, as do antioxidants with potential anticancer effects. Such complexity of oxidative homeostasis is sometimes overseen in the case of studies evaluating the effects of potential anticancer antioxidants. While cancer cells often produce more ROS due to their increased growth-favoring demands, numerous conventional anticancer therapies exploit this feature to ensure selective cancer cell death triggered by excessive ROS levels, also causing serious side effects. The activation of the cellular NRF2 (nuclear factor erythroid 2 like 2) pathway and induction of cytoprotective genes accompanies an increase in ROS levels. A plethora of specific targets, including those involved in thioredoxin (TRX) and glutathione (GSH) systems, are activated by NRF2. In this paper, we briefly review preclinical research findings on the interrelated roles of the NRF2 pathway and TRX and GSH systems, with focus given to clinical findings and their relevance in carcinogenesis and anticancer treatments.
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Affiliation(s)
| | | | | | - Neven Zarkovic
- Laboratory for Oxidative Stress, Division of Molecular Medicine, Rudjer Boskovic Institute, Bijenicka 54, 10000 Zagreb, Croatia; (M.J.); (L.M.); (S.B.S.)
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15
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Jaganjac M, Milkovic L, Gegotek A, Cindric M, Zarkovic K, Skrzydlewska E, Zarkovic N. The relevance of pathophysiological alterations in redox signaling of 4-hydroxynonenal for pharmacological therapies of major stress-associated diseases. Free Radic Biol Med 2020; 157:128-153. [PMID: 31756524 DOI: 10.1016/j.freeradbiomed.2019.11.023] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 11/04/2019] [Accepted: 11/17/2019] [Indexed: 02/07/2023]
Abstract
Modern analytical methods combined with the modern concepts of redox signaling revealed 4-hydroxy-2-nonenal (4-HNE) as particular growth regulating factor involved in redox signaling under physiological and pathophysiological circumstances. In this review current knowledge of the relevance of 4-HNE as "the second messenger of reactive oxygen species" (ROS) in redox signaling of representative major stress-associated diseases is briefly summarized. The findings presented allow for 4-HNE to be considered not only as second messenger of ROS, but also as one of fundamental factors of the stress- and age-associated diseases. While standard, even modern concepts of molecular medicine and respective therapies in majority of these diseases target mostly the disease-specific symptoms. 4-HNE, especially its protein adducts, might appear to be the bioactive markers that would allow better monitoring of specific pathophysiological processes reflecting their complexity. Eventually that could help development of advanced integrative medicine approach for patients and the diseases they suffer from on the personalized basis implementing biomedical remedies that would optimize beneficial effects of ROS and 4-HNE to prevent the onset and progression of the illness, perhaps even providing the real cure.
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Affiliation(s)
- Morana Jaganjac
- Qatar Analytics & BioResearch Lab, Anti Doping Lab Qatar, Sport City Street, Doha, Qatar
| | - Lidija Milkovic
- Rudjer Boskovic Institute, Laboratory for Oxidative Stress, Div. of Molecular Medicine, Bijenicka 54, Zagreb, Croatia
| | - Agnieszka Gegotek
- Department of Analytical Chemistry, Medical University of Bialystok, Mickiewicza 2D, 15-222, Bialystok, Poland
| | - Marina Cindric
- University of Zagreb, School of Medicine, Div. of Pathology, University Hospital Centre Zagreb, Kispaticeva 12, Zagreb, Croatia
| | - Kamelija Zarkovic
- University of Zagreb, School of Medicine, Div. of Pathology, University Hospital Centre Zagreb, Kispaticeva 12, Zagreb, Croatia
| | - Elzbieta Skrzydlewska
- Department of Analytical Chemistry, Medical University of Bialystok, Mickiewicza 2D, 15-222, Bialystok, Poland
| | - Neven Zarkovic
- Rudjer Boskovic Institute, Laboratory for Oxidative Stress, Div. of Molecular Medicine, Bijenicka 54, Zagreb, Croatia.
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16
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Lakshmi SP, Reddy AT, Kodidhela LD, Varadacharyulu NC. Epigallocatechin gallate diminishes cigarette smoke-induced oxidative stress, lipid peroxidation, and inflammation in human bronchial epithelial cells. Life Sci 2020; 259:118260. [PMID: 32795541 DOI: 10.1016/j.lfs.2020.118260] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 07/28/2020] [Accepted: 08/09/2020] [Indexed: 02/07/2023]
Abstract
Cigarette smoke (CS), the major risk factor of chronic obstructive pulmonary disease (COPD), contains numerous free radicals that can cause oxidative stress and exaggerated inflammatory responses in the respiratory system. Lipid peroxidation which is oxidative degradation of polyunsaturated fatty acids and results in cell damage has also been associated with COPD pathogenesis. Increased levels of lipid peroxidation as well as its end product 4-hydroxynonenal have indeed been detected in COPD patients. Additionally, reactive oxygen species such as those contained in CS can activate nuclear factor-κB signaling pathway, initiating cascades of proinflammatory mediator expression. As emerging evidence attests to the antioxidative and anti-inflammatory properties of tea catechins, we sought to determine whether epigallocatechin gallate, the most abundant tea catechin, can provide protection against oxidative stress, lipid peroxidation, and inflammatory responses caused by CS. We found that EGCG treatment blocked cigarette smoke extract (CSE)-induced oxidative stress as indicated by decreased production and accumulation of reactive oxygen species in airway epithelial cells (AECs). Likewise, lipid peroxidation in CSE-stimulated AECs was suppressed by EGCG. Our findings further suggest that EGCG sequestered 4-hydroxynonenal and interfered with its protein adduct formation. Lastly, we show that EGCG inhibited nuclear factor-κB activation and the downstream expression of proinflammatory mediators. In summary, our study describing the antioxidative and anti-inflammatory effects of EGCG in CSE-exposed AECs provide valuable information about the therapeutic potential of this tea catechin for COPD.
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Affiliation(s)
- Sowmya P Lakshmi
- Department of Biochemistry, Sri Krishnadevaraya University, Anantapur, Andhra Pradesh, India.
| | - Aravind T Reddy
- Department of Biochemistry, Sri Krishnadevaraya University, Anantapur, Andhra Pradesh, India
| | - Lakshmi Devi Kodidhela
- Department of Biochemistry, Sri Krishnadevaraya University, Anantapur, Andhra Pradesh, India
| | - N Ch Varadacharyulu
- Department of Biochemistry, Sri Krishnadevaraya University, Anantapur, Andhra Pradesh, India
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17
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Lipid peroxidation is involved in calcium dependent upregulation of mitochondrial metabolism in skeletal muscle. Biochim Biophys Acta Gen Subj 2020; 1864:129487. [DOI: 10.1016/j.bbagen.2019.129487] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 10/31/2019] [Accepted: 11/01/2019] [Indexed: 02/07/2023]
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18
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Al-Jaal B, Salama S, Al-Qasmi N, Jaganjac M. Mycotoxin contamination of food and feed in the Gulf Cooperation Council countries and its detection. Toxicon 2019; 171:43-50. [PMID: 31586556 DOI: 10.1016/j.toxicon.2019.10.003] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Revised: 09/30/2019] [Accepted: 10/02/2019] [Indexed: 02/04/2023]
Abstract
Mycotoxins are secondary metabolites produced by different fungal spices and are found in diverse agricultural crops worldwide; they pose a severe threat to public health. Mycotoxins can cause either acute or chronic symptoms, depending on the type and dose of mycotoxin one has been exposed to. Thus, a continuous monitoring of mycotoxins is needed. Since the discovery of mycotoxins, numerous countries, including the Gulf Cooperation Council (GCC) countries, have established mycotoxin-specific regulations for feed and food. Although a number of studies in GCC countries have investigated the presence of mycotoxins, till date, there are no reviews focusing on the mycotoxin contamination of the food and feed from this region. This review is the first study to present an up-to-date overview of the occurrence of mycotoxins in feed and food in the GCC countries and to discuss the techniques used for mycotoxin analysis.
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Affiliation(s)
| | - Sofia Salama
- Anti-Doping Lab Qatar, Sport city street, Doha, Qatar
| | - Noof Al-Qasmi
- Anti-Doping Lab Qatar, Sport city street, Doha, Qatar
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19
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Jabłońska-Trypuć A, Krętowski R, Wołejko E, Wydro U, Butarewicz A. Traumatic acid toxicity mechanisms in human breast cancer MCF-7 cells. Regul Toxicol Pharmacol 2019; 106:137-146. [DOI: 10.1016/j.yrtph.2019.04.023] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 04/01/2019] [Accepted: 04/30/2019] [Indexed: 01/08/2023]
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20
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Jaganjac M, Matijevic Glavan T, Zarkovic N. The Role of Acrolein and NADPH Oxidase in the Granulocyte-Mediated Growth-Inhibition of Tumor Cells. Cells 2019; 8:cells8040292. [PMID: 30934946 PMCID: PMC6523906 DOI: 10.3390/cells8040292] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 03/22/2019] [Accepted: 03/26/2019] [Indexed: 11/28/2022] Open
Abstract
Although granulocytes are the most abundant leukocytes in human blood, their involvement in the immune response against cancer is not well understood. While granulocytes are known for their “oxidative burst” when challenged with tumor cells, it is less known that oxygen-dependent killing of tumor cells by granulocytes includes peroxidation of lipids in tumor cell membranes, yielding formation of reactive aldehydes like 4-hydroxynonenal (4-HNE) and acrolein. In the present work, we investigate the role of reactive aldehydes on cellular redox homeostasis and surface toll-like receptor 4 (TLR4) expression. We have further study the granulocyte-tumor cell intercellular redox signaling pathways. The data obtained show that granulocytes in the presence of 4-HNE and acrolein induce excessive ROS formation in tumor cells. Acrolein was also shown to induce granulocyte TLR4 expression. Furthermore, granulocyte-mediated antitumor effects were shown to be mediated via HOCl intracellular pathway by the action of NADPH oxidase. However, further studies are needed to understand interaction between TLR4 and granulocyte-tumor cell intercellular signaling pathways.
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Affiliation(s)
- Morana Jaganjac
- Department of Molecular Medicine, Rudjer Boskovic Institute, HR-10002 Zagreb, Croatia.
- Anti-Doping Lab Qatar, Life Science and Research Division, Doha, Qatar.
| | | | - Neven Zarkovic
- Department of Molecular Medicine, Rudjer Boskovic Institute, HR-10002 Zagreb, Croatia.
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21
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Cherkas A, Zarkovic N. 4-Hydroxynonenal in Redox Homeostasis of Gastrointestinal Mucosa: Implications for the Stomach in Health and Diseases. Antioxidants (Basel) 2018; 7:E118. [PMID: 30177630 PMCID: PMC6162398 DOI: 10.3390/antiox7090118] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 08/22/2018] [Accepted: 08/30/2018] [Indexed: 12/11/2022] Open
Abstract
Maintenance of integrity and function of the gastric mucosa (GM) requires a high regeneration rate of epithelial cells during the whole life span. The health of the gastric epithelium highly depends on redox homeostasis, antioxidant defense, and activity of detoxifying systems within the cells, as well as robustness of blood supply. Bioactive products of lipid peroxidation, in particular, second messengers of free radicals, the bellwether of which is 4-hydroxynonenal (HNE), are important mediators in physiological adaptive reactions and signaling, but they are also thought to be implicated in the pathogenesis of numerous gastric diseases. Molecular mechanisms and consequences of increased production of HNE, and its protein adducts, in response to stressors during acute and chronic gastric injury, are well studied. However, several important issues related to the role of HNE in gastric carcinogenesis, tumor growth and progression, the condition of GM after eradication of Helicobacter pylori, or the relevance of antioxidants for HNE-related redox homeostasis in GM, still need more studies and new comprehensive approaches. In this regard, preclinical studies and clinical intervention trials are required, which should also include the use of state-of-the-art analytical techniques, such as HNE determination by immunohistochemistry and enzyme-linked immunosorbent assay (ELISA), as well as modern mass-spectroscopy methods.
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Affiliation(s)
- Andriy Cherkas
- Department of Internal Medicine #1, Danylo Halystkyi Lviv National Medical University, 79010 Lviv, Ukraine.
| | - Neven Zarkovic
- Laboratory for Oxidative Stress (LabOS), Institute "Rudjer Boskovic", HR-10000 Zagreb, Croatia.
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22
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Uchida K, Shibata T, Toyokuni S, Daniel B, Zarkovic K, Zarkovic N, Sasson S. Development of a novel monoclonal antibody against 4-hydroxy-2E,6Z-dodecadienal (4-HDDE)-protein adducts: Immunochemical application in quantitative and qualitative analyses of lipid peroxidation in vitro and ex vivo. Free Radic Biol Med 2018; 124:12-20. [PMID: 29807161 DOI: 10.1016/j.freeradbiomed.2018.05.079] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 05/21/2018] [Accepted: 05/22/2018] [Indexed: 01/11/2023]
Abstract
Non-enzymatic peroxidation of polyunsaturated fatty acids (PUFA) results in the formation of various α,β-unsaturated aldehydes, of which 4-hydroxyalkenals are abundant. The propensity of n-6 PUFA, such as linoleic acid, γ-linolenic acid and arachidonic acid, to undergo radical-induced peroxidation and generate 4-hydroxy-2E-nonenal (4-HNE) has been widely demonstrated. The ability of the latter to form covalent adducts with macromolecules and modify cellular functions has been linked to numerous pathological processes. Concomitantly, evidence has accumulated on specific signaling properties of low concentrations of 4-HNE that may induce hormetic and protective responses to peroxidation stress in cells. It has long been known that peroxidation of PUFA, and particularly arachidonic acid, also give rise to 4-hydroxy-2E,6Z-dodecadienal (4-HDDE), which is more chemically reactive than 4-HNE. Few studies on 4-HDDE revealed its ability to avidly interact covalently with electronegative moieties in macromolecules and to its ability to selectively activate the transcriptional regulator Peroxisome Proliferator-Activated Receptor (PPAR)-β/δ. The research on 4-HDDE has been impeded due to the lack of available pure 4-HDDE and antibodies that recognize 4-HDDE-modified epitopes in proteins. The purpose of this study was to employ an established procedure to synthesize 4-HDDE and use it to create and characterize a monoclonal antibody against 4-HDDE-modified proteins and establish its application for ELISA and immunohistochemical analysis of cells and tissues and further expand lipid peroxidation research.
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Affiliation(s)
- Koji Uchida
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan; Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya 464-8601, Japan
| | - Takahiro Shibata
- Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya 464-8601, Japan
| | - Shinya Toyokuni
- Department of Pathology and Biological Responses, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Bareket Daniel
- Institute for Drug Research, Faculty of Medicine, Hebrew University, Jerusalem 9112001, Israel
| | - Kamelija Zarkovic
- Division of Pathology, Clinical Hospital Centre "Zagreb", University of Zagreb School of Medicine, Zagreb, Croatia
| | - Neven Zarkovic
- Laboratory for Oxidative Stress (LabOS), Institute "Rudjer Boskovic", Zagreb, Croatia
| | - Shlomo Sasson
- Institute for Drug Research, Faculty of Medicine, Hebrew University, Jerusalem 9112001, Israel.
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Al-Hussaini H, Kilarkaje N. Trans-resveratrol mitigates type 1 diabetes-induced oxidative DNA damage and accumulation of advanced glycation end products in glomeruli and tubules of rat kidneys. Toxicol Appl Pharmacol 2017; 339:97-109. [PMID: 29229234 DOI: 10.1016/j.taap.2017.11.025] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2017] [Revised: 11/17/2017] [Accepted: 11/28/2017] [Indexed: 12/15/2022]
Abstract
Hyperglycemia induces the formation of advanced glycation end products (AGEs) and their receptors (RAGEs), which alter several intracellular signaling mechanisms leading to the onset and progression of diabetic nephropathy. The present study focused on, i) modulatory effects of trans-resveratrol (3,5,4'-trihydroxy-trans-stilbene) on structural changes, AGE (NƐ-carboxymethyl-lysine), RAGE, oxidative stress and DNA damage, and apoptosis, and ii) localization of fibrotic changes, AGE, RAGE, 8-oxo-dG and 4-hydroxynonenal (4-HNE) in diabetic rat kidneys. Resveratrol (5mg/kg; po, administered during last 45days of 90-day-long hyperglycemic period) administration to streptozotocin-induced type 1 diabetic male Wistar rats reduced renal hypertrophy and structural changes (tubular atrophy, mesangial expansion or shrinkage, diffuse glomerulonephritis, and fibrosis), AGE accumulation, oxidative stress and DNA damage (8-oxo-dG), 4-HNE, caspase-3, and cleaved-caspase-3, but not the RAGE expression. The AGE accumulated in the mesangium, vascular endothelium, and proximal convoluted tubules and less intensely in distal convoluted tubules of diabetic rat kidneys. The RAGE expression increased in the convoluted tubules and collecting ducts of diabetic rat kidneys, but not in the mesangium. Diabetes increased the expression of 8-oxo-dG in nuclei and cytoplasm of renal cells, and 4-HNE in glomeruli, convoluted tubules, the loops of Henle and collecting ducts. Hyperglycemia-induced AGE-RAGE axis and oxidative stress in turn induced apoptosis in diabetic kidneys. Resveratrol mitigated all diabetic effects except the RAGE expression. In conclusion, Resveratrol significantly alleviates diabetes-induced glycation, oxidative damage, and apoptosis to inhibit the progression of diabetic nephropathy. Resveratrol supplementation may be useful to hinder the onset and progression of diabetic kidney diseases.
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Affiliation(s)
- Heba Al-Hussaini
- Department of Anatomy, Faculty of Medicine, Kuwait University, Kuwait
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24
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Zhang H, Forman HJ. 4-hydroxynonenal-mediated signaling and aging. Free Radic Biol Med 2017; 111:219-225. [PMID: 27876535 PMCID: PMC5438786 DOI: 10.1016/j.freeradbiomed.2016.11.032] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 11/14/2016] [Accepted: 11/17/2016] [Indexed: 02/07/2023]
Abstract
4-Hydroxy-2-nonenal (HNE), one of the major α, β-unsaturated aldehydes produced during lipid peroxidation, is a potent messenger in mediating signaling pathways. Lipid peroxidation and HNE production appear to increase with aging. Although the cause and effect relation remains arguable, aging is associated with significant changes in diverse signaling events, characterized by enhanced or diminished responses of specific signaling pathways. In this review we will discuss how HNE may contribute to aging-related alterations of signaling pathways.
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Affiliation(s)
- Hongqiao Zhang
- Andrus Gerontology Center of the Leonard Davis School of Gerontology, University of Southern California, 3715 McClintock Ave, Los Angeles, CA 90089-0191, USA
| | - Henry Jay Forman
- Andrus Gerontology Center of the Leonard Davis School of Gerontology, University of Southern California, 3715 McClintock Ave, Los Angeles, CA 90089-0191, USA.
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Gasparovic AC, Milkovic L, Sunjic SB, Zarkovic N. Cancer growth regulation by 4-hydroxynonenal. Free Radic Biol Med 2017; 111:226-234. [PMID: 28131901 DOI: 10.1016/j.freeradbiomed.2017.01.030] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 01/16/2017] [Accepted: 01/18/2017] [Indexed: 02/07/2023]
Abstract
While reactive oxygen species (ROS) gain their carcinogenic effects by DNA mutations, if generated in the vicinity of genome, lipid peroxidation products, notably 4-hydroxynonenal (HNE), have much more complex modes of activities. Namely, while ROS are short living and have short efficiency distance range (in nm or µm) HNE has strong binding affinity for proteins, thus forming relatively stable adducts. Hence, HNE can diffuse from the site or origin changing structure and function of respective proteins. Consequently HNE can influence proliferation, differentiation and apoptosis of cancer cells on one hand, while on the other it can affect genome functionality, too. Although HNE is considered to be important factor of carcinogenesis due to its ability to covalently bind to DNA, it might also be cytotoxic for cancer cells, as well as it can modulate their growth. In addition to direct cytotoxicity, HNE is also involved in activity mechanisms by which several cytostatic drugs and radiotherapy exhibit their anticancer effects. Complementary to that, the metabolic pathway for HNE detoxification through RLIP76, which is enhanced in cancer, may be a target for anti-cancer treatments. In addition, some cancer cells can undergo apoptosis or necrosis, if exposed to supraphysiological HNE levels in the cancer microenvironment, especially if challenged additionally by pro-oxidative cytostatics and/or inflammation. These findings could explain previously observed disappearance of HNE from invading cancer cells, which is associated with the increase of HNE in non-malignant cells close to invading cancer utilizing cardiolipin as the source of cancer-inhibiting HNE.
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Affiliation(s)
| | | | | | - Neven Zarkovic
- Rudjer Boskovic Institute, Bijenicka 54, Zagreb, Croatia.
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26
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Andrisic L, Dudzik D, Barbas C, Milkovic L, Grune T, Zarkovic N. Short overview on metabolomics approach to study pathophysiology of oxidative stress in cancer. Redox Biol 2017; 14:47-58. [PMID: 28866248 PMCID: PMC5583394 DOI: 10.1016/j.redox.2017.08.009] [Citation(s) in RCA: 81] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Accepted: 08/08/2017] [Indexed: 12/14/2022] Open
Abstract
Association of oxidative stress with carcinogenesis is well known, but not understood well, as is pathophysiology of oxidative stress generated during different types of anti-cancer treatments. Moreover, recent findings indicate that cancer associated lipid peroxidation might eventually help defending adjacent nonmalignant cells from cancer invasion. Therefore, untargeted metabolomics studies designed for advanced translational and clinical studies are needed to understand the existing paradoxes in oncology, including those related to controversial usage of antioxidants aiming to prevent or treat cancer. In this short review we have tried to put emphasis on the importance of pathophysiology of oxidative stress and lipid peroxidation in cancer development in relation to metabolic adaptation of particular types of cancer allowing us to conclude that adaptation to oxidative stress is one of the main driving forces of cancer pathophysiology. With the help of metabolomics many novel findings are being achieved thus encouraging further scientific breakthroughs. Combined with targeted qualitative and quantitative methods, especially immunochemistry, further research might reveal bio-signatures of individual patients and respective malignant diseases, leading to individualized treatment approach, according to the concepts of modern integrative medicine.
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Affiliation(s)
- Luka Andrisic
- CEMBIO (Centre for Metabolomics and Bioanalysis); Facultad de Farmacia; Universidad San Pablo CEU, Campus Montepríncipe, Madrid, Spain; Rudjer Boskovic Institute, Division of Molecular Medicine, Laboratory for Oxidative Stress, Zagreb, Croatia
| | - Danuta Dudzik
- CEMBIO (Centre for Metabolomics and Bioanalysis); Facultad de Farmacia; Universidad San Pablo CEU, Campus Montepríncipe, Madrid, Spain
| | - Coral Barbas
- CEMBIO (Centre for Metabolomics and Bioanalysis); Facultad de Farmacia; Universidad San Pablo CEU, Campus Montepríncipe, Madrid, Spain
| | - Lidija Milkovic
- Rudjer Boskovic Institute, Division of Molecular Medicine, Laboratory for Oxidative Stress, Zagreb, Croatia
| | - Tilman Grune
- German Institute of Human Nutrition, Potsdam-Rehbruecke, Nuthetal, Germany
| | - Neven Zarkovic
- Rudjer Boskovic Institute, Division of Molecular Medicine, Laboratory for Oxidative Stress, Zagreb, Croatia.
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Dihydropyridine Derivatives as Cell Growth Modulators In Vitro. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:4069839. [PMID: 28473879 PMCID: PMC5394904 DOI: 10.1155/2017/4069839] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Accepted: 02/20/2017] [Indexed: 01/26/2023]
Abstract
The effects of eleven 1,4-dihydropyridine derivatives (DHPs) used alone or together with prooxidant anticancer drug doxorubicin were examined on two cancer (HOS, HeLa) and two nonmalignant cell lines (HMEC, L929). Their effects on the cell growth (3H-thymidine incorporation) were compared with their antiradical activities (DPPH assay), using well-known DHP antioxidant diludine as a reference. Thus, tested DHPs belong to three groups: (1) antioxidant diludine; (2) derivatives with pyridinium moieties at position 4 of the 1,4-DHP ring; (3) DHPs containing cationic methylene onium (pyridinium, trialkylammonium) moieties at positions 2 and 6 of the 1,4-DHP ring. Diludine and DHPs of group 3 exerted antiradical activities, unlike compounds of group 2. However, novel DHPs had cell type and concentration dependent effects on 3H-thymidine incorporation, while diludine did not. Hence, IB-32 (group 2) suppressed the growth of HOS and HeLa, enhancing growth of L929 cells, while K-2-11 (group 3) enhanced growth of every cell line tested, even in the presence of doxorubicin. Therefore, growth regulating and antiradical activity principles of novel DHPs should be further studied to find if DHPs of group 2 could selectively suppress cancer growth and if those of group 3 promote wound healing.
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28
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Živković NP, Petrovečki M, Lončarić ČT, Nikolić I, Waeg G, Jaganjac M, Žarković K, Žarković N. Positron emission tomography-computed tomography and 4-hydroxynonenal-histidine immunohistochemistry reveal differential onset of lipid peroxidation in primary lung cancer and in pulmonary metastasis of remote malignancies. Redox Biol 2017; 11:600-605. [PMID: 28110216 PMCID: PMC5256674 DOI: 10.1016/j.redox.2017.01.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 01/04/2017] [Accepted: 01/05/2017] [Indexed: 01/22/2023] Open
Abstract
The Aim of the study was to reveal if PET-CT analysis of primary and of secondary lung cancer could be related to the onset of lipid peroxidation in cancer and in surrounding non-malignant lung tissue. METHODS Nineteen patients with primary lung cancer and seventeen patients with pulmonary metastasis were involved in the study. Their lungs were analyzed by PET-CT scanning before radical surgical removal of the cancer. Specific immunohistochemistry for the major bioactive marker of lipid peroxidation, 4-hydroxynonenal (HNE), was done for the malignant and surrounding non-malignant lung tissue using genuine monoclonal antibody specific for the HNE-histidine adducts. RESULTS Both the intensity of the PET-CT analysis and the HNE-immunohistochemistry were in correlation with the size of the tumors analyzed, while primary lung carcinomas were larger than the metastatic tumors. The intensity of the HNE-immunohistochemistry in the surrounding lung tissue was more pronounced in the metastatic than in the primary tumors, but it was negatively correlated with the cancer volume determined by PET-CT. The appearance of HNE was more pronounced in non-malignant surrounding tissue than in cancer or stromal cells, both in case of primary and metastatic tumors. CONCLUSIONS Both PET-CT and HNE-immunohistochemistry reflect the size of the malignant tissue. However, lipid peroxidation of non-malignant lung tissue in the vicinity of cancer is more pronounced in metastatic than in primary malignancies and might represent the mechanism of defense against cancer, as was recently revealed also in case of human liver cancer.
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Affiliation(s)
| | | | | | | | - Georg Waeg
- Karl Franzen's University of Graz, Institute of Molecular Biosciences, Austria
| | - Morana Jaganjac
- Toxicology and Multipurpose Dept., Anti-Doping Lab, Doha, Qatar
| | - Kamelija Žarković
- University of Zagreb School of Medicine, Department of Pathology, Clinical Hospital Center, Zagreb, Croatia
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Zhang H, Forman HJ. Signaling by 4-hydroxy-2-nonenal: Exposure protocols, target selectivity and degradation. Arch Biochem Biophys 2016; 617:145-154. [PMID: 27840096 DOI: 10.1016/j.abb.2016.11.003] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Revised: 10/20/2016] [Accepted: 11/09/2016] [Indexed: 01/26/2023]
Abstract
4-hydroxy-2-nonenal (HNE), a major non-saturated aldehyde product of lipid peroxidation, has been extensively studied as a signaling messenger. In these studies a wide range of HNE concentrations have been used, ranging from the unstressed plasma concentration to far beyond what would be found in actual pathophysiological condition. In addition, accumulating evidence suggest that signaling protein modification by HNE is specific with only those proteins with cysteine, histidine, and lysine residues located in certain sequence or environments adducted by HNE. HNE-signaling is further regulated through the turnover of HNE-signaling protein adducts through proteolytic process that involve proteasomes, lysosomes and autophagy. This review discusses the HNE concentrations and exposure modes used in signaling studies, the selectivity of the HNE-adduction site, and the turnover of signaling protein adducts.
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Affiliation(s)
- Hongqiao Zhang
- Andrus Gerontology Center of the Leonard Davis School of Gerontology, University of Southern California, 3715 McClintock Ave, Los Angeles, CA 90089-0191, USA.
| | - Henry Jay Forman
- Andrus Gerontology Center of the Leonard Davis School of Gerontology, University of Southern California, 3715 McClintock Ave, Los Angeles, CA 90089-0191, USA
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Asati V, Mahapatra DK, Bharti SK. PI3K/Akt/mTOR and Ras/Raf/MEK/ERK signaling pathways inhibitors as anticancer agents: Structural and pharmacological perspectives. Eur J Med Chem 2016; 109:314-41. [PMID: 26807863 DOI: 10.1016/j.ejmech.2016.01.012] [Citation(s) in RCA: 383] [Impact Index Per Article: 47.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Revised: 01/08/2016] [Accepted: 01/09/2016] [Indexed: 12/17/2022]
Abstract
The protein kinases regulate cellular functions such as transcription, translation, proliferation, growth and survival by the process of phosphorylation. Over activation of signaling pathways play a major role in oncogenesis. The PI3K signaling pathway is dysregulated almost in all cancers due to the amplification, genetic mutation of PI3K gene and the components of the PI3K pathway themselves. Stimulation of the PI3K/Akt/mTOR and Ras/Raf/MEK/ERK pathways enhances growth, survival, and metabolism of cancer cells. Recently, the PI3K/Akt/mTOR and Ras/Raf/MEK/ERK signaling pathways have been identified as promising therapeutic targets for cancer therapy. The kinase inhibitors with enhanced specificity and improved pharmacokinetics have been considered for design and development of anticancer agents. This review focuses primarily on the Ras/Raf/MEK/ERK and PI3K/Akt/mTOR signaling pathways as therapeutic targets of anticancer drugs, their specific and dual inhibitors, structure activity relationships (SARs) and inhibitors under clinical trials.
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Affiliation(s)
- Vivek Asati
- Institute of Pharmaceutical Sciences, Guru Ghasidas Vishwavidyalaya (A Central University), Bilaspur 495009, Chhattisgarh, India
| | - Debarshi Kar Mahapatra
- Institute of Pharmaceutical Sciences, Guru Ghasidas Vishwavidyalaya (A Central University), Bilaspur 495009, Chhattisgarh, India
| | - Sanjay Kumar Bharti
- Institute of Pharmaceutical Sciences, Guru Ghasidas Vishwavidyalaya (A Central University), Bilaspur 495009, Chhattisgarh, India.
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Milkovic L, Cipak Gasparovic A, Zarkovic N. Overview on major lipid peroxidation bioactive factor 4-hydroxynonenal as pluripotent growth-regulating factor. Free Radic Res 2015; 49:850-60. [PMID: 25532703 DOI: 10.3109/10715762.2014.999056] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The reactive aldehyde 4-hydroxynonenal (HNE) is major bioactive marker of lipid peroxidation generated under oxidative stress from polyunsaturated fatty acids. Biomedical significance of HNE was first revealed in pathogenesis of various degenerative and malignant diseases. Thus, HNE was considered for decades only as cytotoxic molecule, "second toxic messenger of free radicals" responsible for numerous undesirable consequences of oxidative stress. However, the increase of knowledge on physiology of redox signaling revealed also desirable, physiological roles of HNE, especially in the field of cellular signaling pathways regulating proliferation, differentiation, and apoptosis. These pluripotent effects of HNE can be explained by its concentration-dependent interactions with the cytokine networks and complex cellular antioxidant systems also showing cell and tissue specificities. Therefore, this paper gives a comprehensive, yet short overview on HNE as pluripotent growth-regulating factor.
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Affiliation(s)
- L Milkovic
- Laboratory for Oxidative Stress, Rudjer Boskovic Institute , Zagreb , Croatia
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Kim D, Koo JS, Lee S. Overexpression of Reactive Oxygen Species Scavenger Enzymes Is Associated with a Good Prognosis in Triple-Negative Breast Cancer. Oncology 2015; 88:9-17. [DOI: 10.1159/000358365] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Accepted: 12/20/2013] [Indexed: 11/19/2022]
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Transcriptional and antioxidative responses to endogenous polyunsaturated fatty acid accumulation in yeast. Mol Cell Biochem 2014; 399:27-37. [PMID: 25280400 DOI: 10.1007/s11010-014-2229-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2014] [Accepted: 09/27/2014] [Indexed: 01/06/2023]
Abstract
Pathophysiology of polyunsaturated fatty acids (PUFAs) is associated with aberrant lipid and oxygen metabolism. In particular, under oxidative stress, PUFAs are prone to autocatalytic degradation via peroxidation, leading to formation of reactive aldehydes with numerous potentially harmful effects. However, the pathological and compensatory mechanisms induced by lipid peroxidation are very complex and not sufficiently understood. In our study, we have used yeast capable of endogenous PUFA synthesis in order to understand the effects triggered by PUFA accumulation on cellular physiology of a eukaryotic organism. The mechanisms induced by PUFA accumulation in S. cerevisiae expressing Hevea brasiliensis Δ12-fatty acid desaturase include down-regulation of components of electron transport chain in mitochondria as well as up-regulation of pentose-phosphate pathway and fatty acid β-oxidation at the transcriptional level. Interestingly, while no changes were observed at the transcriptional level, activities of two important enzymatic antioxidants, catalase and glutathione-S-transferase, were altered in response to PUFA accumulation. Increased intracellular glutathione levels further suggest an endogenous oxidative stress and activation of antioxidative defense mechanisms under conditions of PUFA accumulation. Finally, our data suggest that PUFA in cell membrane causes metabolic changes which in turn lead to adaptation to endogenous oxidative stress.
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Radenkovic S, Milosevic Z, Konjevic G, Karadzic K, Rovcanin B, Buta M, Gopcevic K, Jurisic V. Lactate dehydrogenase, catalase, and superoxide dismutase in tumor tissue of breast cancer patients in respect to mammographic findings. Cell Biochem Biophys 2013. [PMID: 23197387 DOI: 10.1007/s12013-012-9482-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Lactate dehydrogenase (LDH), marker of anaerobic metabolism, is associated with highly invasive and metastatic breast cancer. Novel studies show that increased anaerobic metabolism (LDH), as well as activity of antioxidative enzymes (superoxide dismutase (SOD) and catalase (CAT)), is correlated with higher mammographic density, as known predictor of breast cancer risk. In this study, we measured LDH, MDH, and SOD activity in tumor and adjacent tissues of breast cancer patients by spectrophotometric assay. Mammograms were evaluated according to the American College of Radiology Breast Imaging Reporting and Data system. Mammographically dense breast tissue is associated with higher activity of LDH in tumor tissue of breast cancer patients. Moreover, patients with masses have significantly higher activity of LDH compared to patients with focal asymmetries or architectural distortion. Patients with spiculated mass margin had higher activity of LDH compared to patients with focal asymmetries or architectural distortion. Activity of LDH in patients significantly increases, while activity of CAT significantly decreases with the increase of BIRADS category. These results suggest that the association of activity of LDH and CAT in tumor tissue with mammographic characteristics could help in defining aggressive breast cancers.
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Affiliation(s)
- Sandra Radenkovic
- Department of Radiation Oncology and Diagnostics, Institute of Oncology and Radiology of Serbia, Belgrade, Serbia.
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Ashour W, Fathy M, Hamed M, Youssif O, Fawzy N. Association between environmental tobacco smoke exposure and lung cancer susceptibility: Modification by antioxidant enzymes genetic polymorphisms. EGYPTIAN JOURNAL OF CHEST DISEASES AND TUBERCULOSIS 2013. [DOI: 10.1016/j.ejcdt.2013.09.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Fathy M, Hamed M, Youssif O, Fawzy N, Ashour W. Association Between Environmental Tobacco Smoke Exposure and Lung Cancer Susceptibility: Modification by Antioxidant Enzyme Genetic Polymorphisms. Mol Diagn Ther 2013; 18:55-62. [DOI: 10.1007/s40291-013-0051-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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37
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Jaganjac M, Tirosh O, Cohen G, Sasson S, Zarkovic N. Reactive aldehydes--second messengers of free radicals in diabetes mellitus. Free Radic Res 2013; 47 Suppl 1:39-48. [PMID: 23521622 DOI: 10.3109/10715762.2013.789136] [Citation(s) in RCA: 269] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Elevated levels of pro-oxidants and various markers of oxidative tissue damage were found in diabetic patients, indicating involvement of oxidative stress in the pathogenesis of diabetes mellitus (DM). On one side, physiological levels of reactive oxygen species (ROS) play an important role in redox signaling of various cells, while on the other, excessive ROS production can jeopardize the integrity and physiological functions of cellular macromolecules, in particular proteins, thus contributing to the pathogenesis of DM. Reactive aldehydes, especially 4-hydroxynonenal (HNE), are considered as second messengers of free radicals that act both as signaling molecules and as cytotoxic products of lipid peroxidation causing long-lasting biological consequences, in particular by covalent modification of macromolecules. Accordingly, the HNE and related reactive aldehydes may play important roles in the pathophysiology of DM, both in the development of the disease and in its progression and complications due to the following: (i) exposure of cells to supraphysiological levels of 4-hydroxyalkenals, (ii) persistent and sustained generation of 4-hydroxyalkenals that progressively affect vulnerable cells that lack an efficient bioactive aldehyde neutralization system, (iii) altered redox signaling influenced by reactive aldehydes, in particular by HNE, and (iv) induction of extracellular generation of similar aldehydes under secondary pathological conditions, such as low-grade inflammation.
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Affiliation(s)
- M Jaganjac
- Laboratory for Oxidative Stress, Rudjer Boskovic Institute, Zagreb, Croatia
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