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Dikalova A, Ao M, Tkachuk L, Dikalov S. Deacetylation mimetic mutation of mitochondrial SOD2 attenuates ANG II-induced hypertension by protecting against oxidative stress and inflammation. Am J Physiol Heart Circ Physiol 2024; 327:H433-H443. [PMID: 38904850 DOI: 10.1152/ajpheart.00162.2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 06/11/2024] [Accepted: 06/11/2024] [Indexed: 06/22/2024]
Abstract
Almost one-half of adults have hypertension, and blood pressure is poorly controlled in a third of patients despite the use of multiple drugs, likely because of mechanisms that are not affected by current treatments. Hypertension is linked to oxidative stress; however, common antioxidants are ineffective. Hypertension is associated with inactivation of key intrinsic mitochondrial antioxidant, superoxide dismutase 2 (SOD2), due to hyperacetylation, but the role of specific SOD2 lysine residues has not been defined. Hypertension is associated with SOD2 acetylation at lysine 68, and we suggested that deacetylation mimetic mutation of K68 to arginine in SOD2 inhibits vascular oxidative stress and attenuates hypertension. To test this hypothesis, we have developed a new deacetylation mimetic SOD2-K68R mice. We performed in vivo studies in SOD2-K68R mice using angiotensin II (ANG II) model of vascular dysfunction and hypertension. ANG II infusion in wild-type mice induced vascular inflammation and oxidative stress and increased blood pressure to 160 mmHg. SOD2-K68R mutation completely prevented increase in mitochondrial superoxide, abrogated vascular oxidative stress, preserved endothelial nitric oxide production, protected vasorelaxation, and attenuated ANG II-induced hypertension. ANG II and cytokines contribute to vascular oxidative stress and hypertension. Treatment of wild-type aortas with ANG II and cytokines in organoid culture increased mitochondrial superoxide twofold, which was completely prevented in aortas isolated from SOD2-K68R mice. These data support the important role of SOD2-K68 acetylation in vascular oxidative stress and pathogenesis of hypertension. We conclude that strategies to reduce SOD2 acetylation may have therapeutic potential in the treatment of vascular dysfunction and hypertension.NEW & NOTEWORTHY Essential hypertension is associated with hyperacetylation of key mitochondrial antioxidant SOD2; however, the pathophysiological role of SOD2 acetylation has not been defined. Our animal study of angiotensin II hypertension model shows that deacetylation mimetic SOD2-K68R mutation prevents pathogenic increase in vascular mitochondrial superoxide, abrogates vascular oxidative stress, preserves endothelial nitric oxide, protects endothelial-dependent vasorelaxation, and attenuates hypertension. These data support the important role of SOD2-K68 acetylation in vascular oxidative stress and the pathogenesis of hypertension.
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Affiliation(s)
- Anna Dikalova
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, United States
| | - Mingfang Ao
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, United States
| | - Liliya Tkachuk
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, United States
| | - Sergey Dikalov
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, United States
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2
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Tao B, Gong W, Xu C, Ma Z, Mei J, Chen M. The relationship between hypoxia and Alzheimer's disease: an updated review. Front Aging Neurosci 2024; 16:1402774. [PMID: 39086755 PMCID: PMC11288848 DOI: 10.3389/fnagi.2024.1402774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Accepted: 07/04/2024] [Indexed: 08/02/2024] Open
Abstract
Alzheimer's disease (AD) is one of the most common neurodegenerative diseases, and the most prevalent form of dementia. The main hallmarks for the diagnosis of AD are extracellular amyloid-beta (Aβ) plaque deposition and intracellular accumulation of highly hyperphosphorylated Tau protein as neurofibrillary tangles. The brain consumes more oxygen than any other organs, so it is more easily to be affected by hypoxia. Hypoxia has long been recognized as one of the possible causes of AD and other neurodegenerative diseases, but the exact mechanism has not been clarified. In this review, we will elucidate the connection between hypoxia-inducible factors-1α and AD, including its contribution to AD and its possible protective effects. Additionally, we will discuss the relationship between oxidative stress and AD as evidence show that oxidative stress acts on AD-related pathogenic factors such as mitochondrial dysfunction, Aβ deposition, inflammation, etc. Currently, there is no cure for AD. Given the close association between hypoxia, oxidative stress, and AD, along with current research on the protective effects of antioxidants against AD, we speculate that antioxidants could be a potential therapeutic approach for AD and worth further study.
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Affiliation(s)
- Borui Tao
- Department of Pharmacology, School of Basic Medical Sciences, Anhui Medical University, Hefei, China
- The First Clinical Medical College, Anhui Medical University, Hefei, China
| | - Wei Gong
- Department of Otorhinolaryngology Head and Neck Surgery, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Chengyuan Xu
- Department of Pharmacology, School of Basic Medical Sciences, Anhui Medical University, Hefei, China
| | - Zhihui Ma
- Department of Pharmacology, School of Basic Medical Sciences, Anhui Medical University, Hefei, China
| | - Jinyu Mei
- Department of Otorhinolaryngology Head and Neck Surgery, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Ming Chen
- Department of Pharmacology, School of Basic Medical Sciences, Anhui Medical University, Hefei, China
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3
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Kryukov VY, Kosman E, Slepneva I, Vorontsova YL, Polenogova O, Kazymov G, Alikina T, Akhanaev Y, Sidorenko D, Noskov YA, Krivopalov A, Kabilov MR, Yaroslavtseva O. Involvement of bacteria in the development of fungal infections in the Colorado potato beetle. INSECT SCIENCE 2024. [PMID: 38956988 DOI: 10.1111/1744-7917.13414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2024] [Revised: 06/09/2024] [Accepted: 06/14/2024] [Indexed: 07/04/2024]
Abstract
Entomopathogenic fungi may interact with insects' symbiotic bacteria during infection. We hypothesized that topical infection with Beauveria bassiana may alter the microbiota of the Colorado potato beetle (CPB) and that these modifications may alter the course of mycoses. We used a model with two concentrations of conidia: (1) high concentration that causes rapid (acute) pathogenesis with fast mortality followed by bacterial decomposition of insects; (2) lower concentration that leads to prolonged pathogenesis ending in conidiation on cadavers. The fungal infections increased loads of enterobacteria and bacilli on the cuticle surface and in hemolymph and midgut, and the greatest increase was detected during the acute mycosis. By contrast, stronger activation of IMD and JAK-STAT signaling pathways in integuments and fat body was observed during the prolonged mycosis. Relatively stable (nonpathogenic) conditions remained in the midgut during both scenarios of mycosis with slight changes in bacterial communities, the absence of mesh and stat expression, a decrease in reactive oxygen species production, and slight induction of Toll and IMD pathways. Oral administration of antibiotic and predominant CPB bacteria (Enterobacteriaceae, Lactococcus, Pseudomonas) led to minor and mainly antagonistic effects in survival of larvae infected with B. bassiana. We believe that prolonged mycosis is necessary for successful development of the fungus because such pathogenesis allows the host to activate antibacterial reactions. Conversely, after infection with high concentrations of the fungus, the host's resources are insufficient to fully activate antibacterial defenses, and this situation makes successful development of the fungus impossible.
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Affiliation(s)
- Vadim Yu Kryukov
- Institute of Systematics and Ecology of Animals, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia
| | - Elena Kosman
- Institute of Systematics and Ecology of Animals, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia
| | - Irina Slepneva
- Voevodsky Institute of Chemical Kinetics and Combustion, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia
| | - Yana L Vorontsova
- Institute of Systematics and Ecology of Animals, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia
| | - Olga Polenogova
- Institute of Systematics and Ecology of Animals, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia
| | - Gleb Kazymov
- Novosibirsk State University, Novosibirsk, Russia
| | - Tatyana Alikina
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia
| | - Yuriy Akhanaev
- Institute of Systematics and Ecology of Animals, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia
| | - Darya Sidorenko
- Institute of Systematics and Ecology of Animals, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia
| | - Yury A Noskov
- Institute of Systematics and Ecology of Animals, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia
| | - Anton Krivopalov
- Institute of Systematics and Ecology of Animals, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia
| | - Marsel R Kabilov
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia
| | - Olga Yaroslavtseva
- Institute of Systematics and Ecology of Animals, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia
- Novosibirsk State University, Novosibirsk, Russia
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Pavuluri H, Bakhtiary Z, Panner Selvam MK, Hellstrom WJG. Oxidative Stress-Associated Male Infertility: Current Diagnostic and Therapeutic Approaches. MEDICINA (KAUNAS, LITHUANIA) 2024; 60:1008. [PMID: 38929625 PMCID: PMC11205999 DOI: 10.3390/medicina60061008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Revised: 06/11/2024] [Accepted: 06/17/2024] [Indexed: 06/28/2024]
Abstract
Infertility is a prevalent global issue affecting approximately 17.5% of adults, with sole male factor contributing to 20-30% of cases. Oxidative stress (OS) is a critical factor in male infertility, disrupting the balance between reactive oxygen species (ROS) and antioxidants. This imbalance detrimentally affects sperm function and viability, ultimately impairing fertility. OS also triggers molecular changes in sperm, including DNA damage, lipid peroxidation, and alterations in protein expression, further compromising sperm functionality and potential fertilization. Diagnostic tools discussed in this review offer insights into OS markers, antioxidant levels, and intracellular ROS concentrations. By accurately assessing these parameters, clinicians can diagnose male infertility more effectively and thus tailor treatment plans to individual patients. Additionally, this review explores various treatment options for males with OS-associated infertility, such as empirical drugs, antioxidants, nanoantioxidants, and lifestyle modifications. By addressing the root causes of male infertility and implementing targeted interventions, clinicians can optimize treatment outcomes and enhance the chances of conception for couples struggling with infertility.
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Affiliation(s)
| | | | | | - Wayne J. G. Hellstrom
- Department of Urology, Tulane University School of Medicine, New Orleans, LA 70112, USA; (H.P.); (Z.B.); (M.K.P.S.)
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Lee CH, Korvink JG, Jouda M. Frequency multiplexing enables parallel multi-sample EPR. Sci Rep 2024; 14:11815. [PMID: 38783051 PMCID: PMC11116391 DOI: 10.1038/s41598-024-62564-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Accepted: 05/18/2024] [Indexed: 05/25/2024] Open
Abstract
Electron paramagnetic resonance (EPR) spectroscopy stands out as a powerful analytical technique with extensive applications in the fields of biology, chemistry, physics, and material sciences. It proves invaluable for investigating the molecular structure and reaction mechanisms of substances containing unpaired electrons, such as metal complexes, organic and inorganic radicals, and intermediate states in chemical reactions. However, despite their remarkable capabilities, EPR systems face significant limitations in terms of sample throughput, as current commercial systems only target the analysis of one sample at a time. Here we introduce a novel scheme for conducting ultra-high frequency continuous-wave EPR (CW EPR) targeting the EPR spectroscopy of multiple microliter volume samples in parallel. Our proof-of-principle prototype involves two decoupled detection cells equipped with high qualty factor Q = 104 solenoidal coils tuned to 488 and 589 MHz, ensuring a significant frequency gap for effective radio frequency (RF) decoupling between the channels. To further enhance electromagnetic decoupling, an orthogonal alignment of the coils was adopted. The paper further presents an innovative radiofrequency circuit concept that utilizes a single physical RF channel to simultaneously conduct parallel EPR on up to eight cells. Parallel EPR experiments on two BDPA samples, each with a sample volume of 18.3 μL, registered signal-to-noise ratios of 255 and 252 for the two EPR measurement cells, with no observable coupling. The showcased prototype, built using cost-effective commercially available fabrication technology, is readily scalable and represents an initial step with promising potential for advancing sample screening with high-throughput parallel EPR.
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Affiliation(s)
- Chun Him Lee
- Karlsruhe Institute of Technology, Institute of Microstructure Technology, 76344, Eggenstein-Leopoldshafen, Germany
| | - Jan G Korvink
- Karlsruhe Institute of Technology, Institute of Microstructure Technology, 76344, Eggenstein-Leopoldshafen, Germany.
| | - Mazin Jouda
- Karlsruhe Institute of Technology, Institute of Microstructure Technology, 76344, Eggenstein-Leopoldshafen, Germany.
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de la Visitación N, Chen W, Krishnan J, Van Beusecum JP, Amarnath V, Hennen EM, Zhao S, Saleem M, Ao M, Dikalov SI, Dikalova AE, Harrison DG, Patrick DM. Immunoproteasomal Processing of IsoLG-Adducted Proteins Is Essential for Hypertension. Circ Res 2024; 134:1276-1291. [PMID: 38623763 PMCID: PMC11081850 DOI: 10.1161/circresaha.124.324068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Accepted: 03/30/2024] [Indexed: 04/17/2024]
Abstract
BACKGROUND Hypertension is characterized by CD8+ (cluster differentiation 8) T cell activation and infiltration into peripheral tissues. CD8+ T cell activation requires proteasomal processing of antigenic proteins. It has become clear that isoLG (isolevuglandin)-adduced peptides are antigenic in hypertension; however, IsoLGs inhibit the constitutive proteasome. We hypothesized that immunoproteasomal processing of isoLG-adducts is essential for CD8+ T cell activation and inflammation in hypertension. METHODS IsoLG adduct processing was studied in murine dendritic cells (DCs), endothelial cells (ECs), and B8 fibroblasts. The role of the proteasome and the immunoproteasome in Ang II (angiotensin II)-induced hypertension was studied in C57BL/6 mice treated with bortezomib or the immunoproteasome inhibitor PR-957 and by studying mice lacking 3 critical immunoproteasome subunits (triple knockout mouse). We also examined hypertension in mice lacking the critical immunoproteasome subunit LMP7 (large multifunctional peptidase 7) specifically in either DCs or ECs. RESULTS We found that oxidant stress increases the presence of isoLG adducts within MHC-I (class I major histocompatibility complex), and immunoproteasome overexpression augments this. Pharmacological or genetic inhibition of the immunoproteasome attenuated hypertension and tissue inflammation. Conditional deletion of LMP7 in either DCs or ECs attenuated hypertension and vascular inflammation. Finally, we defined the role of the innate immune receptors STING (stimulator of interferon genes) and TLR7/8 (toll-like receptor 7/8) as drivers of LMP7 expression in ECs. CONCLUSIONS These studies define a previously unknown role of the immunoproteasome in DCs and ECs in CD8+ T cell activation. The immunoproteasome in DCs and ECs is critical for isoLG-adduct presentation to CD8+ T cells, and in the endothelium, this guides homing and infiltration of T cells to specific tissues.
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Affiliation(s)
- Néstor de la Visitación
- Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Wei Chen
- Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Jaya Krishnan
- Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Justin P. Van Beusecum
- Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Department of Veterans Affairs, Charleston South Carolina
- Division of Nephrology, Department of Medicine, Medical University of South Carolina, Charleston, SC, USA
| | - Venkataraman Amarnath
- Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | | | - Shilin Zhao
- Vanderbilt Center for Quantitative Science, Vanderbilt University Medical Center
| | - Mohammad Saleem
- Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Mingfang Ao
- Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Sergey I. Dikalov
- Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Anna E. Dikalova
- Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - David G. Harrison
- Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Division of Cardiovascular Medicine, Department of Medicine, Vanderbilt University Medical Center
| | - David M. Patrick
- Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Division of Cardiovascular Medicine, Department of Medicine, Vanderbilt University Medical Center
- Department of Veterans Affairs, Nashville, Tennessee
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Wang S, Nikamo P, Laasonen L, Gudbjornsson B, Ejstrup L, Iversen L, Lindqvist U, Alm JJ, Eisfeldt J, Zheng X, Catrina SB, Taylan F, Vaz R, Ståhle M, Tapia-Paez I. Rare coding variants in NOX4 link high ROS levels to psoriatic arthritis mutilans. EMBO Mol Med 2024; 16:596-615. [PMID: 38379095 PMCID: PMC10940640 DOI: 10.1038/s44321-024-00035-z] [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: 06/14/2023] [Revised: 01/19/2024] [Accepted: 01/26/2024] [Indexed: 02/22/2024] Open
Abstract
Psoriatic arthritis mutilans (PAM) is the rarest and most severe form of psoriatic arthritis, characterized by erosions of the small joints and osteolysis leading to joint disruption. Despite its severity, the underlying mechanisms are unknown, and no susceptibility genes have hitherto been identified. We aimed to investigate the genetic basis of PAM by performing massive parallel sequencing in sixty-one patients from the PAM Nordic cohort. We found rare variants in the NADPH oxidase 4 (NOX4) in four patients. In silico predictions show that the identified variants are potentially damaging. NOXs are the only enzymes producing reactive oxygen species (ROS). NOX4 is specifically involved in the differentiation of osteoclasts, the cells implicated in bone resorption. Functional follow-up studies using cell culture, zebrafish models, and measurement of ROS in patients uncovered that these NOX4 variants increase ROS levels both in vitro and in vivo. We propose NOX4 as the first candidate susceptibility gene for PAM. Our study links high levels of ROS caused by NOX4 variants to the development of PAM, offering a potential therapeutic target.
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Affiliation(s)
- Sailan Wang
- Division of Dermatology and Venereology, Department of Medicine, Solna, Karolinska Institutet, Stockholm, Sweden
| | - Pernilla Nikamo
- Division of Dermatology and Venereology, Department of Medicine, Solna, Karolinska Institutet, Stockholm, Sweden
| | - Leena Laasonen
- Helsinki Medical Imaging Center, Helsinki University Central Hospital, Helsinki, Finland
| | - Bjorn Gudbjornsson
- Centre for Rheumatology Research, University Hospital and Faculty of Medicine, University of Iceland, Reykjavik, Iceland
| | - Leif Ejstrup
- Department of Rheumatology, Odense University Hospital, Odense, Denmark
| | - Lars Iversen
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark
| | - Ulla Lindqvist
- Department of Medical Sciences, Rheumatology, Uppsala University, Uppsala, Sweden
| | - Jessica J Alm
- Department of Microbiology, Tumor and Cell Biology & National Pandemic Center, Karolinska Institutet, Stockholm, Sweden
| | - Jesper Eisfeldt
- Department of Clinical Genetics, Karolinska University Hospital, Stockholm, Sweden
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - Xiaowei Zheng
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - Sergiu-Bogdan Catrina
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
- Center for Diabetes, Academic Specialist Center, Stockholm, Sweden
| | - Fulya Taylan
- Department of Clinical Genetics, Karolinska University Hospital, Stockholm, Sweden
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - Raquel Vaz
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - Mona Ståhle
- Division of Dermatology and Venereology, Department of Medicine, Solna, Karolinska Institutet, Stockholm, Sweden
- Dermatology and Venereology Clinic, Karolinska University Hospital, Stockholm, Sweden
| | - Isabel Tapia-Paez
- Division of Dermatology and Venereology, Department of Medicine, Solna, Karolinska Institutet, Stockholm, Sweden.
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Kjellberg A, Lindholm ME, Zheng X, Liwenborg L, Rodriguez-Wallberg KA, Catrina SB, Lindholm P. Comparing the Blood Response to Hyperbaric Oxygen with High-Intensity Interval Training-A Crossover Study in Healthy Volunteers. Antioxidants (Basel) 2023; 12:2043. [PMID: 38136163 PMCID: PMC10740875 DOI: 10.3390/antiox12122043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 11/22/2023] [Accepted: 11/23/2023] [Indexed: 12/24/2023] Open
Abstract
High-intensity interval training (HIIT) and hyperbaric oxygen therapy (HBOT) induce reactive oxygen species (ROS) formation and have immunomodulatory effects. The lack of readily available biomarkers for assessing the dose-response relationship is a challenge in the clinical use of HBOT, motivating this feasibility study to evaluate the methods and variability. The overall hypothesis was that a short session of hyperbaric oxygen (HBO2) would have measurable effects on immune cells in the same physiological range as shown in HIIT; and that the individual response to these interventions can be monitored in venous blood and/or peripheral blood mononuclear cells (PBMCs). Ten healthy volunteers performed two interventions; a 28 min HIIT session and 28 min HBO2 in a crossover design. We evaluated bulk RNA sequencing data from PBMCs, with a separate analysis of mRNA and microRNA. Blood gases, peripheral venous oxygen saturation (SpvO2), and ROS levels were measured in peripheral venous blood. We observed an overlap in the gene expression changes in 166 genes in response to HIIT and HBO2, mostly involved in hypoxic or inflammatory pathways. Both interventions were followed by downregulation of several NF-κB signaling genes in response to both HBO2 and HIIT, while several interferon α/γ signaling genes were upregulated. Only 12 microRNA were significantly changed in HBO2 and 6 in HIIT, without overlap between interventions. ROS levels were elevated in blood at 30 min and 60 min compared to the baseline during HIIT, but not during/after HBO2. In conclusion, HBOT changed the gene expression in a number of pathways measurable in PBMC. The correlation of these changes with the dose and individual response to treatment warrants further investigation.
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Affiliation(s)
- Anders Kjellberg
- Department of Physiology and Pharmacology, Karolinska Institutet, 17177 Stockholm, Sweden (P.L.)
- Medical Unit Intensive Care and Thoracic Surgery, Perioperative Medicine and Intensive Care, Karolinska University Hospital, 17176 Stockholm, Sweden
| | - Maléne E. Lindholm
- Department of Physiology and Pharmacology, Karolinska Institutet, 17177 Stockholm, Sweden (P.L.)
- Department of Medicine, Cardiovascular Medicine, Stanford University, Stanford, CA 94305, USA
| | - Xiaowei Zheng
- Department of Molecular Medicine and Surgery, Karolinska Institutet, 17176 Stockholm, Sweden
| | - Lovisa Liwenborg
- Department of Physiology and Pharmacology, Karolinska Institutet, 17177 Stockholm, Sweden (P.L.)
| | - Kenny Alexandra Rodriguez-Wallberg
- Department of Oncology-Pathology, Karolinska Institutet, 17176 Stockholm, Sweden
- Department of Reproductive Medicine, Karolinska University Hospital, 17176 Stockholm, Sweden
| | - Sergiu-Bogdan Catrina
- Department of Molecular Medicine and Surgery, Karolinska Institutet, 17176 Stockholm, Sweden
| | - Peter Lindholm
- Department of Physiology and Pharmacology, Karolinska Institutet, 17177 Stockholm, Sweden (P.L.)
- Division of Hyperbaric Medicine, Department of Emergency Medicine, University of California San Diego, La Jolla, CA 92093, USA
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Georgiev T, Nikolova G, Dyakova V, Karamalakova Y, Georgieva E, Ananiev J, Ivanov V, Hadzhibozheva P. Vitamin E and Silymarin Reduce Oxidative Tissue Damage during Gentamycin-Induced Nephrotoxicity. Pharmaceuticals (Basel) 2023; 16:1365. [PMID: 37895836 PMCID: PMC10610356 DOI: 10.3390/ph16101365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 09/20/2023] [Accepted: 09/22/2023] [Indexed: 10/29/2023] Open
Abstract
Aminoglycoside antibiotics and gentamicin (GN), in particular, are still widely used in clinical practice. It is a well-known fact that GN causes nephrotoxicity, and redox disturbances are discussed as a factor in its side effects. Recently, a new type of cell oxidative death, named ferroptosis, was discovered; it is associated with iron accumulation in the cell, glutathione (GSH) depletion and inactivation of glutathione peroxidase-4 (GPX4), reactive oxygen species (ROS) increment with concomitant lipid peroxidation. In this regard, a possible connection between GN-induced renal damage, ferroptosis and the overall antioxidant status of the organism could be investigated. Moreover, due to its beneficial effects, GN is still one of the main choices as a therapeutic agent for several diseases, and the possible reduction of its side effects with the application of certain antioxidants will be of important clinical significance. The study was conducted with adult male white mice divided into several groups (n = 6). GN nephrotoxicity was induced by the administration of GN 100-200 mg/kg i.p. for 10 days. The control group received only saline. The other groups received either Vitamin E (400 mg/kg p.o.) or Silymarin (200 mg/kg p.o.) applied alone or together with GN for the same period. After the end of the study, the animals were sacrificed, and blood and tissue samples were taken for the assessment of biochemical parameters and antioxidant status, as well as routine and specific for GPX4 histochemistry examination. The experimental results indicate that GN-induced nephrotoxicity negatively modulates GPX4 activity and is associated with increased production of ROS and lipid peroxidation. The groups treated with antioxidants demonstrated preserved antioxidant status and better GPX4 activity. In conclusion, the inhibition of ROS production and especially the suppression of ferroptosis, could be of clinical potential and can be applied as a means of reducing the toxic effects of GN application.
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Affiliation(s)
- Tsvetelin Georgiev
- Department of Physiology, Pathophysiology and Pharmacology, Medical Faculty, Trakia University, 6000 Stara Zagora, Bulgaria; (T.G.); (V.D.); (P.H.)
| | - Galina Nikolova
- Department of Chemistry and Biochemistry, Medical Faculty, Trakia University, 6000 Stara Zagora, Bulgaria;
| | - Viktoriya Dyakova
- Department of Physiology, Pathophysiology and Pharmacology, Medical Faculty, Trakia University, 6000 Stara Zagora, Bulgaria; (T.G.); (V.D.); (P.H.)
| | - Yanka Karamalakova
- Department of Chemistry and Biochemistry, Medical Faculty, Trakia University, 6000 Stara Zagora, Bulgaria;
| | - Ekaterina Georgieva
- Department of Chemistry and Biochemistry, Medical Faculty, Trakia University, 6000 Stara Zagora, Bulgaria;
| | - Julian Ananiev
- Department of General and Clinical Pathology, Medical Faculty, Trakia University, 6000 Stara Zagora, Bulgaria;
| | - Veselin Ivanov
- Department of Neurology, Psychiatry and Disaster Medicine, Medical Faculty, Trakia University, 6000 Stara Zagora, Bulgaria;
| | - Petya Hadzhibozheva
- Department of Physiology, Pathophysiology and Pharmacology, Medical Faculty, Trakia University, 6000 Stara Zagora, Bulgaria; (T.G.); (V.D.); (P.H.)
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10
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Palha MS, Legenzov EA, Lamb DR, Zimring JC, Buehler PW, Kao JPY. Superoxide measurement as a novel probe of red blood cell storage quality. BLOOD TRANSFUSION = TRASFUSIONE DEL SANGUE 2023; 21:422-427. [PMID: 36580028 PMCID: PMC10497384 DOI: 10.2450/2022.0246-22] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 11/30/2022] [Indexed: 12/30/2022]
Affiliation(s)
- Mitasha S. Palha
- Center for Biomedical Engineering and Technology, and Department of Physiology, University of Maryland School of Medicine, Baltimore, MD, United States of America
| | - Eric A. Legenzov
- Center for Biomedical Engineering and Technology, and Department of Physiology, University of Maryland School of Medicine, Baltimore, MD, United States of America
| | - Derek R. Lamb
- University of Maryland, School of Medicine, Center for Blood Oxygen Transport and Hemostasis, Department of Pediatrics, Baltimore, MD, United States of America
| | - James C. Zimring
- University of Virginia School of Medicine, Department of Pathology and Carter Immunology Center, Charlottesville, VA, United States of America
| | - Paul W. Buehler
- University of Maryland, School of Medicine, Center for Blood Oxygen Transport and Hemostasis, Department of Pediatrics, Baltimore, MD, United States of America
- University of Maryland, School of Medicine, Department of Pathology, Baltimore, MD, United States of America
| | - Joseph P. Y. Kao
- Center for Biomedical Engineering and Technology, and Department of Physiology, University of Maryland School of Medicine, Baltimore, MD, United States of America
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11
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Wang S, Wen J, Mu L, Hu X, Feng R, Jia Y. Highly active complexes of pyrite and organic matter regulate arsenic fate. JOURNAL OF HAZARDOUS MATERIALS 2023; 458:131967. [PMID: 37421861 DOI: 10.1016/j.jhazmat.2023.131967] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 06/22/2023] [Accepted: 06/28/2023] [Indexed: 07/10/2023]
Abstract
Arsenic (As) presents high toxicity and strong carcinogenicity, and its health risks are regulated by its oxidation state and speciation. As can form complexes with the surface of minerals or organic matter through adsorption, affecting its toxicity and bioavailability. However, the regulation effect of the interaction of coexisting minerals and organic matter on As fate remains largely unknown. Here, we discovered that minerals (e.g., pyrite) and organic matter (e.g., alanyl glutamine, AG) can form pyrite-AG complexes, promoting As(III) oxidation under simulated solar irradiation. The formation of pyrite-AG was explored in terms of the interaction of surface oxygen atoms, electron transfer and crystal surface changes. From the perspective of atoms and molecules, pyrite-AG showed more oxygen vacancies, stronger reactive oxygen species (ROS) and a higher electron transport capacity than pyrite alone. Compared with pyrite, pyrite-AG effectively promoted the conversion of highly toxic As(III) to less toxic As(V) due to the enhanced photochemical properties. Moreover, quantification and capture of ROS confirmed that hydroxyl radicals (•OH) played an important role in As(III) oxidation in the pyrite-AG and As(III) system. Our results provide previously unidentified perspectives on the effects and chemical mechanisms of highly active complexes of mineral and organic matter on As fate and provide new insights into the risk assessment and control of As pollution.
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Affiliation(s)
- Shuting Wang
- Tianjin Key Laboratory of Agro-Environment and Product Safety, Key Laboratory for Environmental Factors Controlling Agro-Product Quality Safety (Ministry of Agriculture and Rural Affairs), Institute of Agro-Environmental Protection, Ministry of Agriculture and Rural Affairs, 300191 Tianjin, China; Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, 300350 Tianjin, China
| | - Jingyu Wen
- Tianjin Key Laboratory of Agro-Environment and Product Safety, Key Laboratory for Environmental Factors Controlling Agro-Product Quality Safety (Ministry of Agriculture and Rural Affairs), Institute of Agro-Environmental Protection, Ministry of Agriculture and Rural Affairs, 300191 Tianjin, China
| | - Li Mu
- Tianjin Key Laboratory of Agro-Environment and Product Safety, Key Laboratory for Environmental Factors Controlling Agro-Product Quality Safety (Ministry of Agriculture and Rural Affairs), Institute of Agro-Environmental Protection, Ministry of Agriculture and Rural Affairs, 300191 Tianjin, China.
| | - Xiangang Hu
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, 300350 Tianjin, China
| | - Ruihong Feng
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, 300350 Tianjin, China
| | - Yuying Jia
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, 300350 Tianjin, China
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12
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Demartini B, Nisticò V, Benayoun C, Cigognini AC, Ferrucci R, Vezzoli A, Dellanoce C, Gambini O, Priori A, Mrakic-Sposta S. Glutamatergic dysfunction, neuroplasticity, and redox status in the peripheral blood of patients with motor conversion disorders (functional movement disorders): a first step towards potential biomarkers discovery. Transl Psychiatry 2023; 13:212. [PMID: 37330537 DOI: 10.1038/s41398-023-02500-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 05/22/2023] [Accepted: 05/30/2023] [Indexed: 06/19/2023] Open
Abstract
Functional movement disorders (FMD) are characterized by the presence of neurological symptoms that cannot be explained by typical neurological diseases or other medical conditions. First evidence showed that, compared to healthy controls (CTR), FMD patients presented increased levels of glutamate+glutamine in the anterior cingulate cortex/medial prefrontal cortex, and decreased levels of glutamate in the cerebrospinal fluid, suggesting that a glutamatergic dysfunction might play a role in FMD pathophysiology. In this study, 12 FMD patients and 20 CTR were recruited and underwent venous blood sampling and urine collection: levels of glutamate, BDNF, dopamine, oxidative stress, creatinine, neopterin, and uric acid were analyzed. Participants also underwent a psychometric assessment investigating depression, anxiety, and alexithymia. We found that levels of glutamate, BDNF, and dopamine were significantly lower in the blood of FMD patients than CTR. Glutamate and dopamine levels were positively associated with levels of alexithymia. Our findings give further evidence that glutamatergic dysfunction might be involved in the pathophysiology of FMD, possibly representing a biomarker of disease; moreover, since glutamatergic and dopaminergic systems are closely interconnected, our results might have a relevance in terms of treatment options for FMD patients.
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Affiliation(s)
- Benedetta Demartini
- Dipartimento di Scienze della Salute, Università degli Studi di Milano, Milano, Italy.
- Unità di Psichiatria 52, Presidio San Paolo, ASST Santi Paolo e Carlo, Milano, Italy.
- "Aldo Ravelli" Research Center for Neurotechnology and Experimental Brain Therapeutics, Università degli Studi di Milano, Milano, Italy.
| | - Veronica Nisticò
- Dipartimento di Scienze della Salute, Università degli Studi di Milano, Milano, Italy.
- "Aldo Ravelli" Research Center for Neurotechnology and Experimental Brain Therapeutics, Università degli Studi di Milano, Milano, Italy.
- Dipartimento di Psicologia, Università degli Studi di Milano - Bicocca, Milano, Italy.
| | - Caroline Benayoun
- Dipartimento di Scienze della Salute, Università degli Studi di Milano, Milano, Italy
| | - Anna Chiara Cigognini
- Dipartimento di Scienze della Salute, Università degli Studi di Milano, Milano, Italy
| | - Roberta Ferrucci
- Dipartimento di Scienze della Salute, Università degli Studi di Milano, Milano, Italy
- Unità di Psichiatria 52, Presidio San Paolo, ASST Santi Paolo e Carlo, Milano, Italy
- III Clinica Neurologica, Presidio San Paolo, ASST Santi Paolo e Carlo, Milano, Italy
| | - Alessandra Vezzoli
- Institute of Clinical Physiology - Milan, National Research Council (CNR), Milano, Italy
| | - Cinzia Dellanoce
- Institute of Clinical Physiology - Milan, National Research Council (CNR), Milano, Italy
| | - Orsola Gambini
- Dipartimento di Scienze della Salute, Università degli Studi di Milano, Milano, Italy
- Unità di Psichiatria 52, Presidio San Paolo, ASST Santi Paolo e Carlo, Milano, Italy
- "Aldo Ravelli" Research Center for Neurotechnology and Experimental Brain Therapeutics, Università degli Studi di Milano, Milano, Italy
| | - Alberto Priori
- Dipartimento di Scienze della Salute, Università degli Studi di Milano, Milano, Italy
- Unità di Psichiatria 52, Presidio San Paolo, ASST Santi Paolo e Carlo, Milano, Italy
- III Clinica Neurologica, Presidio San Paolo, ASST Santi Paolo e Carlo, Milano, Italy
| | - Simona Mrakic-Sposta
- Institute of Clinical Physiology - Milan, National Research Council (CNR), Milano, Italy
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13
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Simona MS, Alessandra V, Emanuela C, Elena T, Michela M, Fulvia G, Vincenzo S, Ilaria B, Federica M, Eloisa A, Massimo A, Maristella G. Evaluation of Oxidative Stress and Metabolic Profile in a Preclinical Kidney Transplantation Model According to Different Preservation Modalities. Int J Mol Sci 2023; 24:ijms24021029. [PMID: 36674540 PMCID: PMC9861050 DOI: 10.3390/ijms24021029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 01/02/2023] [Accepted: 01/03/2023] [Indexed: 01/07/2023] Open
Abstract
This study addresses a joint nuclear magnetic resonance (NMR) and electron paramagnetic resonance (EPR) spectroscopy approach to provide a platform for dynamic assessment of kidney viability and metabolism. On porcine kidney models, ROS production, oxidative damage kinetics, and metabolic changes occurring both during the period between organ retrieval and implantation and after kidney graft were examined. The 1H-NMR metabolic profile—valine, alanine, acetate, trimetylamine-N-oxide, glutathione, lactate, and the EPR oxidative stress—resulting from ischemia/reperfusion injury after preservation (8 h) by static cold storage (SCS) and ex vivo machine perfusion (HMP) methods were monitored. The functional recovery after transplantation (14 days) was evaluated by serum creatinine (SCr), oxidative stress (ROS), and damage (thiobarbituric-acid-reactive substances and protein carbonyl enzymatic) assessments. At 8 h of preservation storage, a significantly (p < 0.0001) higher ROS production was measured in the SCS vs. HMP group. Significantly higher concentration data (p < 0.05−0.0001) in HMP vs. SCS for all the monitored metabolites were found as well. The HMP group showed a better function recovery. The comparison of the areas under the SCr curves (AUC) returned a significantly smaller (−12.5 %) AUC in the HMP vs. SCS. EPR-ROS concentration (μmol·g−1) from bioptic kidney tissue samples were significantly lower in HMP vs. SCS. The same result was found for the NMR monitored metabolites: lactate: −59.76%, alanine: −43.17%; valine: −58.56%; and TMAO: −77.96%. No changes were observed in either group under light microscopy. In conclusion, a better and more rapid normalization of oxidative stress and functional recovery after transplantation were observed by HMP utilization.
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Affiliation(s)
- Mrakic-Sposta Simona
- Institute of Clinical Physiology, National Research Council (IFC-CNR), 20159 Milano, Italy
| | - Vezzoli Alessandra
- Institute of Clinical Physiology, National Research Council (IFC-CNR), 20159 Milano, Italy
- Correspondence: (V.A.); (G.M.)
| | - Cova Emanuela
- Department of Molecular Medicine, IRCCS Foundation Policlinico San Matteo, 27100 Pavia, Italy
| | - Ticcozzelli Elena
- Department of Surgery, IRCCS Foundation Policlinico San Matteo, 27100 Pavia, Italy
| | - Montorsi Michela
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Roma Open University, 00166 Roma, Italy
| | - Greco Fulvia
- Institute of Chemical Sciences and Technologies “G. Natta”, National Research Council (SCITEC-CNR), 20133 Milan, Italy
| | - Sepe Vincenzo
- Department of Molecular Medicine, IRCCS Foundation Policlinico San Matteo, 27100 Pavia, Italy
| | - Benzoni Ilaria
- Department of Surgery, IRCCS Foundation Policlinico San Matteo, 27100 Pavia, Italy
| | - Meloni Federica
- Section of Pneumology, Department of Internal Medicine, University of Pavia, 27100 Pavia, Italy
| | - Arbustini Eloisa
- Centre for Inherited Cardiovascular Diseases, IRCCS Foundation Policlinico San Matteo, 27100 Pavia, Italy
| | - Abelli Massimo
- Department of Surgery, IRCCS Foundation Policlinico San Matteo, 27100 Pavia, Italy
| | - Gussoni Maristella
- Institute of Chemical Sciences and Technologies “G. Natta”, National Research Council (SCITEC-CNR), 20133 Milan, Italy
- Correspondence: (V.A.); (G.M.)
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14
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Bosco G, Giacon TA, Paolocci N, Vezzoli A, Noce CD, Paganini M, Agrimi J, Garetto G, Cialoni D, D'Alessandro N, Camporesi EM, Mrakic-Sposta S. Dopamine/BDNF loss underscores narcosis cognitive impairment in divers: a proof of concept in a dry condition. Eur J Appl Physiol 2023; 123:143-158. [PMID: 36214902 DOI: 10.1007/s00421-022-05055-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Accepted: 09/18/2022] [Indexed: 01/20/2023]
Abstract
PURPOSE Divers can experience cognitive impairment due to inert gas narcosis (IGN) at depth. Brain-derived neurotrophic factor (BDNF) rules neuronal connectivity/metabolism to maintain cognitive function and protect tissues against oxidative stress (OxS). Dopamine and glutamate enhance BDNF bioavailability. Thus, we hypothesized that lower circulating BDNF levels (via lessened dopamine and/or glutamate release) underpin IGN in divers, while testing if BDNF loss is associated with increased OxS. METHODS To mimic IGN, we administered a deep narcosis test via a dry dive test (DDT) at 48 msw in a multiplace hyperbaric chamber to six well-trained divers. We collected: (1) saliva samples before DDT (T0), 25 msw (descending, T1), 48 msw (depth, T2), 25 msw (ascending, T3), 10 min after decompression (T4) to dopamine and/or reactive oxygen species (ROS) levels; (2) blood and urine samples at T0 and T4 for OxS too. We administered cognitive tests at T0, T2, and re-evaluated the divers at T4. RESULTS At 48 msw, all subjects experienced IGN, as revealed by the cognitive test failure. Dopamine and total antioxidant capacity (TAC) reached a nadir at T2 when ROS emission was maximal. At decompression (T4), a marked drop of BDNF/glutamate content was evidenced, coinciding with a persisting decline in dopamine and cognitive capacity. CONCLUSIONS Divers encounter IGN at - 48 msw, exhibiting a marked loss in circulating dopamine levels, likely accounting for BDNF-dependent impairment of mental capacity and heightened OxS. The decline in dopamine and BDNF appears to persist at decompression; thus, boosting dopamine/BDNF signaling via pharmacological or other intervention types might attenuate IGN in deep dives.
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Affiliation(s)
- Gerardo Bosco
- Department of Biomedical Sciences, University of Padova, 35131, Padova, Italy
- Division of Cardiology, Johns Hopkins Medical Institutions, Baltimore, MD, USA
- Institute of Clinical Physiology, National Research Council (CNR), 20162, Milano, Italy
- ATIP Center for Hyperbaric Medicine, Padova, Italy
| | | | - Nazareno Paolocci
- Department of Biomedical Sciences, University of Padova, 35131, Padova, Italy
- Division of Cardiology, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Alessandra Vezzoli
- Institute of Clinical Physiology, National Research Council (CNR), 20162, Milano, Italy
| | - Cinzia Della Noce
- Institute of Clinical Physiology, National Research Council (CNR), 20162, Milano, Italy
| | - Matteo Paganini
- Department of Biomedical Sciences, University of Padova, 35131, Padova, Italy
| | - Jacopo Agrimi
- Division of Cardiology, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | | | - Danilo Cialoni
- Department of Biomedical Sciences, University of Padova, 35131, Padova, Italy
- Division of Cardiology, Johns Hopkins Medical Institutions, Baltimore, MD, USA
- Institute of Clinical Physiology, National Research Council (CNR), 20162, Milano, Italy
- ATIP Center for Hyperbaric Medicine, Padova, Italy
- Dan Europe Foundation, Research Division, Roseto degli Abbruzzi, Teramo, Italy
| | | | | | - Simona Mrakic-Sposta
- Institute of Clinical Physiology, National Research Council (CNR), 20162, Milano, Italy.
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15
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Dandapani H, Kankaanpää P, Jones PR, Kallio P. A Plasmid-Based Fluorescence Reporter System for Monitoring Oxidative Damage in E. coli. SENSORS (BASEL, SWITZERLAND) 2022; 22:6334. [PMID: 36080791 PMCID: PMC9459809 DOI: 10.3390/s22176334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 08/11/2022] [Accepted: 08/17/2022] [Indexed: 06/15/2023]
Abstract
Quantitating intracellular oxidative damage caused by reactive oxygen species (ROS) is of interest in many fields of biological research. The current systems primarily rely on supplemented oxygen-sensitive substrates that penetrate the target cells, and react with ROS to produce signals that can be monitored with spectroscopic or imaging techniques. The objective here was to design a new non-invasive analytical strategy for measuring ROS-induced damage inside living cells by taking advantage of the native redox sensor system of E. coli. The developed plasmid-based sensor relies on an oxygen-sensitive transcriptional repressor IscR that controls the expression of a fluorescent marker in vivo. The system was shown to quantitatively respond to oxidative stress induced by supplemented H2O2 and lowered cultivation temperatures. Comparative analysis with fluorescence microscopy further demonstrated that the specificity of the reporter system was equivalent to the commercial chemical probe (CellROX). The strategy introduced here is not dependent on chemical probes, but instead uses a fluorescent expression system to detect enzyme-level oxidative damage in microbial cells. This provides a cheap and simple means for analysing enzyme-level oxidative damage in a biological context in E. coli.
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Affiliation(s)
- Hariharan Dandapani
- Molecular Plant Biology, Department of Life Technologies, University of Turku, FI-20014 Turku, Finland
| | - Pasi Kankaanpää
- Turku BioImaging and Turku Bioscience Centre, University of Turku, FI-20014 Turku, Finland
- Turku BioImaging and Turku Bioscience Centre, Åbo Akademi University, FI-20500 Turku, Finland
| | - Patrik R. Jones
- Molecular Plant Biology, Department of Life Technologies, University of Turku, FI-20014 Turku, Finland
- Department of Life Sciences, Faculty of Natural Sciences, Imperial College London, London SW7 2BX, UK
| | - Pauli Kallio
- Molecular Plant Biology, Department of Life Technologies, University of Turku, FI-20014 Turku, Finland
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16
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Uddin MJ, Lo JHJ, Oltman CG, Crews BC, Huda T, Liu J, Kingsley PJ, Lin S, Milad M, Aleem AM, Asaduzzaman A, McIntyre JO, Duvall CL, Marnett LJ. Discovery of a Redox-Activatable Chemical Probe for Detection of Cyclooxygenase-2 in Cells and Animals. ACS Chem Biol 2022; 17:1714-1722. [PMID: 35786843 PMCID: PMC10464600 DOI: 10.1021/acschembio.1c00961] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Cyclooxygenase-2 (COX-2) expression is up-regulated in inflammatory tissues and many premalignant and malignant tumors. Assessment of COX-2 protein in vivo, therefore, promises to be a powerful strategy to distinguish pathologic cells from normal cells in a complex disease setting. Herein, we report the first redox-activatable COX-2 probe, fluorocoxib Q (FQ), for in vivo molecular imaging of pathogenesis. FQ inhibits COX-2 selectively in purified enzyme and cell-based assays. FQ exhibits extremely low fluorescence and displays time- and concentration-dependent fluorescence enhancement upon exposure to a redox environment. FQ enters the cells freely and binds to the COX-2 enzyme. FQ exhibits high circulation half-life and metabolic stability sufficient for target site accumulation and demonstrates COX-2-targeted uptake and retention in cancer cells and pathologic tissues. Once taken up, it undergoes redox-mediated transformation into a fluorescent compound fluorocoxib Q-H that results in high signal-to-noise contrast and differentiates pathologic tissues from non-pathologic tissues for real-time in vivo imaging.
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Affiliation(s)
- Md. Jashim Uddin
- Department of Biochemistry, Vanderbilt University, Nashville, Tennessee 37232 USA
| | - Justin Han-Je Lo
- Department of Biochemistry, Vanderbilt University, Nashville, Tennessee 37232 USA
- Division of Hematology and Oncology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232 USA
| | - Connor G. Oltman
- Department of Biochemistry, Vanderbilt University, Nashville, Tennessee 37232 USA
| | - Brenda C. Crews
- Department of Biochemistry, Vanderbilt University, Nashville, Tennessee 37232 USA
| | - Tamanna Huda
- Department of Biochemistry, Vanderbilt University, Nashville, Tennessee 37232 USA
| | - Justin Liu
- Department of Biochemistry, Vanderbilt University, Nashville, Tennessee 37232 USA
- Department of Neuroscience, Columbia University, New York City, New York, 10027 USA
| | - Philip J. Kingsley
- Department of Biochemistry, Vanderbilt University, Nashville, Tennessee 37232 USA
| | - Shuyang Lin
- Department of Biochemistry, Vanderbilt University, Nashville, Tennessee 37232 USA
| | - Mathew Milad
- Department of Biochemistry, Vanderbilt University, Nashville, Tennessee 37232 USA
| | - Ansari M. Aleem
- Department of Biochemistry, Vanderbilt University, Nashville, Tennessee 37232 USA
| | - Abu Asaduzzaman
- Department of Electrical Engineering and Computer Science, Wichita State University, Wichita, Kansas 67260 USA
| | - J. Oliver McIntyre
- Departments of Radiology and Radiological Sciences, and Pharmacology, Vanderbilt Institute of Imaging Science, Vanderbilt University School of Medicine, Nashville, Tennessee 37232 USA
| | - Craig L. Duvall
- Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee 37232 USA
| | - Lawrence J. Marnett
- Departments of Biochemistry, Chemistry, and Pharmacology, Vanderbilt Institute of Chemical Biology, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee 37232 USA
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17
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Reactive oxygen species, the trident of Neptune in the hands of hecate; role in different diseases, signaling pathways, and detection methods. Arch Biochem Biophys 2022; 728:109357. [DOI: 10.1016/j.abb.2022.109357] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 06/29/2022] [Accepted: 07/16/2022] [Indexed: 12/22/2022]
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18
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Elajaili H, Hernandez-Lagunas L, Harris P, Sparagna GC, Jonscher R, Ohlstrom D, Sucharov CC, Bowler RP, Suliman H, Fritz KS, Roede JR, Nozik ES. Extracellular superoxide dismutase (EC-SOD) R213G variant reduces mitochondrial ROS and preserves mitochondrial function in bleomycin-induced lung injury: EC-SOD R213G variant and intracellular redox regulation. ADVANCES IN REDOX RESEARCH 2022; 5:100035. [PMID: 38273965 PMCID: PMC10810244 DOI: 10.1016/j.arres.2022.100035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2024]
Abstract
Extracellular superoxide dismutase (EC-SOD) is highly expressed in the lung and vasculature. A common human single nucleotide polymorphism (SNP) in the matrix binding region of EC-SOD leads to a single amino acid substitution, R213G, and alters EC-SOD tissue binding affinity. The change in tissue binding affinity redistributes EC-SOD from tissue to extracellular fluids. Mice (R213G mice) expressing a knock-in of this EC-SOD SNP exhibit elevated plasma and reduced lung EC-SOD content and activity and are protected against bleomycin-induced lung injury and inflammation. It is unknown how the redistribution of EC-SOD alters site-specific redox-regulated molecules relevant for protection. In this study, we tested the hypothesis that the change in the local EC-SOD content would influence not only the extracellular redox microenvironment where EC-SOD is localized but also protect the intracellular redox status of the lung. Mice were treated with bleomycin and harvested 7 days post-treatment. Superoxide levels, measured by electron paramagnetic resonance (EPR), were lower in plasma and Bronchoalveolar lavage fluid (BALF) cells in R213G mice compared to wild-type (WT) mice, while lung cellular superoxide levels in R213G mice were not elevated post-bleomycin compared to WT mice despite low lung EC-SOD levels. Lung glutathione redox potential (EhGSSG), determined by HPLC and fluorescence, was more oxidized in WT compared to R213G mice. In R213G mice, lung mitochondrial oxidative stress was reduced shown by mitochondrial superoxide level measured by EPR in lung and the resistance to bleomycin-induced cardiolipin oxidation. Bleomycin treatment suppressed mitochondrial respiration in WT mice. Mitochondrial function was impaired at baseline in R213G mice but did not exhibit further suppression in respiration post-bleomycin. Collectively, the results indicate that R213G variant preserves intracellular redox state and protects mitochondrial function in the setting of bleomycin-induced inflammation.
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Affiliation(s)
- Hanan Elajaili
- Cardiovascular Pulmonary Research Laboratories and Pediatric Critical Care Medicine, Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Laura Hernandez-Lagunas
- Cardiovascular Pulmonary Research Laboratories and Pediatric Critical Care Medicine, Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Peter Harris
- Department of Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Genevieve C. Sparagna
- Division of Cardiology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Raleigh Jonscher
- Division of Cardiology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Denis Ohlstrom
- Cardiovascular Pulmonary Research Laboratories and Pediatric Critical Care Medicine, Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Carmen C. Sucharov
- Division of Cardiology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | | | - Hagir Suliman
- Departments of Anesthesiology and Pathology, Duke University School of Medicine, Durham, North Carolina
| | - Kristofer S. Fritz
- Department of Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - James R. Roede
- Department of Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Eva S. Nozik
- Cardiovascular Pulmonary Research Laboratories and Pediatric Critical Care Medicine, Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, Colorado
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19
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Simicic D, Cudalbu C, Pierzchala K. Overview of oxidative stress findings in hepatic encephalopathy: From cellular and ammonium-based animal models to human data. Anal Biochem 2022; 654:114795. [PMID: 35753389 DOI: 10.1016/j.ab.2022.114795] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 05/26/2022] [Accepted: 06/15/2022] [Indexed: 11/30/2022]
Abstract
Oxidative stress is a natural phenomenon in the body. Under physiological conditions intracellular reactive oxygen species (ROS) are normal components of signal transduction cascades, and their levels are maintained by a complex antioxidants systems participating in the in-vivo redox homeostasis. Increased oxidative stress is present in several chronic diseases and interferes with phagocytic and nervous cell functions, causing an up-regulation of cytokines and inflammation. Hepatic encephalopathy (HE) occurs in both acute liver failure (ALF) and chronic liver disease. Increased blood and brain ammonium has been considered as an important factor in pathogenesis of HE and has been associated with inflammation, neurotoxicity, and oxidative stress. The relationship between ROS and the pathophysiology of HE is still poorly understood. Therefore, sensing ROS production for a better understanding of the relationship between oxidative stress and functional outcome in HE pathophysiology is critical for determining the disease mechanisms, as well as to improve the management of patients. This review is emphasizing the important role of oxidative stress in HE development and documents the changes occurring as a consequence of oxidative stress augmentation based on cellular and ammonium-based animal models to human data.
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Affiliation(s)
- D Simicic
- CIBM Center for Biomedical Imaging, Switzerland; Animal Imaging and Technology, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland; Laboratory of Functional and Metabolic Imaging, EPFL, Lausanne, Switzerland
| | - C Cudalbu
- CIBM Center for Biomedical Imaging, Switzerland; Animal Imaging and Technology, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - K Pierzchala
- CIBM Center for Biomedical Imaging, Switzerland; Animal Imaging and Technology, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland; Laboratory of Functional and Metabolic Imaging, EPFL, Lausanne, Switzerland.
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20
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Sun H, Cao M, Zhang P, Tian X, Lu M, Du L, Xue K, Cui G. Magnetic-Field-Enhanced H 2S Sensitivity of Cu 2O/NiO Heterostructure Ordered Nanoarrays. ACS Sens 2022; 7:1903-1911. [PMID: 35729782 DOI: 10.1021/acssensors.2c00495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Magnetism is a promising external intervention for gas sensitivity based on a heterogeneous interfacial structure caused by the regulation of the heterogeneous interface conductivity and the surface oxygen adsorption. In this study, Cu2O/NiO heterostructure-ordered nanoarrays were prepared with a two-dimensional (2D) electrodeposition in situ assembly method for H2S gas detection at room temperature under the action of a magnetic field. The nanoarrays were multibarrier structures with a strictly periodic structure that was greater than hundreds of microns in size. The experimental data confirmed that the response of 50 ppm of H2S based on the nanoarrays was improved by nearly 61% with a relatively weak magnetic field. Particularly at a low concentration (≤20 ppm), the effect of the magnetic field enhancement on the sensitivity was more obvious. We attributed the enhancement of the gas sensitivity with the magnetic field to the regulation of the Cu2O-NiO interface conductance and the surface oxygen adsorption. This study demonstrated that a magnetic field could significantly enhance the gas sensitivity based on heterostructures. Results of this study provide an important reference for the application of magnetism in gas detection and the design of new gas-sensitive materials.
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Affiliation(s)
- Haoming Sun
- School of Mechanical Engineering, Dalian Jiaotong University, Dalian, 116028, China
| | - Meng Cao
- School of Information Engineering, Nanchang University, Nanchang, 330031, China
| | - Pinhua Zhang
- School of Physics and Electrical Engineering, Linyi University, Linyi, 276000, China
| | - Xiaojing Tian
- School of Mechanical Engineering, Dalian Jiaotong University, Dalian, 116028, China
| | - Manli Lu
- School of Physics and Electrical Engineering, Linyi University, Linyi, 276000, China
| | - Lulu Du
- School of Physics and Electrical Engineering, Linyi University, Linyi, 276000, China
| | - Kaifeng Xue
- School of Physics and Electrical Engineering, Linyi University, Linyi, 276000, China
| | - Guangliang Cui
- School of Physics and Electrical Engineering, Linyi University, Linyi, 276000, China
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21
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Lee E, Lee M, Kwon S, Kim J, Kwon Y. Systematic and mechanistic analysis of AuNP-induced nanotoxicity for risk assessment of nanomedicine. NANO CONVERGENCE 2022; 9:27. [PMID: 35680772 PMCID: PMC9184696 DOI: 10.1186/s40580-022-00320-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 05/29/2022] [Indexed: 05/02/2023]
Abstract
For decades, nanoparticles (NPs) have been widely implemented in various biomedical fields due to their unique optical, thermal, and tunable properties. Particularly, gold nanoparticles (AuNPs) have opened new frontiers in sensing, targeted drug delivery, imaging, and photodynamic therapy, showing promising results for the treatment of various intractable diseases that affect quality of life and longevity. Despite the tremendous achievements of AuNPs-based approaches in biomedical applications, few AuNP-based nanomedicines have been evaluated in clinical trials, which is likely due to a shortage of understanding of the biological and pathological effects of AuNPs. The biological fate of AuNPs is tightly related to a variety of physicochemical parameters including size, shape, chemical structure of ligands, charge, and protein corona, and therefore evaluating the effects of these parameters on specific biological interactions is a major ongoing challenge. Therefore, this review focuses on ongoing nanotoxicology studies that aim to characterize the effect of various AuNP characteristics on AuNP-induced toxicity. Specifically, we focus on understanding how each parameter alters the specific biological interactions of AuNPs via mechanistic analysis of nano-bio interactions. We also discuss different cellular functions affected by AuNP treatment (e.g., cell motility, ROS generation, interaction with DNA, and immune response) to understand their potential human health risks. The information discussed herein could contribute to the safe usage of nanomedicine by providing a basis for appropriate risk assessment and for the development of nano-QSAR models.
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Affiliation(s)
- Euiyeon Lee
- Department of Biomedical Engineering, Dongguk University, Seoul, 04620, Korea
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ, 08854, USA
| | - Minhyeong Lee
- Department of Biomedical Engineering, Dongguk University, Seoul, 04620, Korea
| | - San Kwon
- Department of Biomedical Engineering, Dongguk University, Seoul, 04620, Korea
| | - Jongpil Kim
- Department of Chemistry, Dongguk University, Seoul, 04620, Korea.
| | - Youngeun Kwon
- Department of Biomedical Engineering, Dongguk University, Seoul, 04620, Korea.
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22
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Malacrida S, De Lazzari F, Mrakic-Sposta S, Vezzoli A, Zordan MA, Bisaglia M, Menti GM, Meda N, Frighetto G, Bosco G, Dal Cappello T, Strapazzon G, Reggiani C, Gussoni M, Megighian A. Lifespan and ROS levels in different Drosophila melanogaster strains after 24 h hypoxia exposure. Biol Open 2022; 11:275522. [PMID: 35616023 PMCID: PMC9253781 DOI: 10.1242/bio.059386] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 05/18/2022] [Indexed: 11/20/2022] Open
Abstract
During recent decades, model organisms such as Drosophila melanogaster have made it possible to study the effects of different environmental oxygen conditions on lifespan and oxidative stress. However, many studies have often yielded controversial results usually assigned to variations in Drosophila genetic background and differences in study design. In this study, we compared longevity and ROS levels in young, unmated males of three laboratory wild-type lines (Canton-S, Oregon-R and Berlin-K) and one mutant line (Sod1n1) as a positive control of redox imbalance, under both normoxic and hypoxic (2% oxygen for 24 h) conditions. Lifespan was used to detect the effects of hypoxic treatment and differences were analysed by means of Kaplan–Meier survival curves and log-rank tests. Electron paramagnetic resonance spectroscopy was used to measure ROS levels and analysis of variance was used to estimate the effects of hypoxic treatment and to assess ROS differences between strains. We observed that the genetic background is a relevant factor involved in D. melanogaster longevity and ROS levels. Indeed, as expected, in normoxia Sod1n1 are the shortest-lived, while the wild-type strains, despite a longer lifespan, show some differences, with the Canton-S line displaying the lowest mortality rate. After hypoxic stress these variances are amplified, with Berlin-K flies showing the highest mortality rate and most evident reduction of lifespan. Moreover, our analysis highlighted differential effects of hypoxia on redox balance/unbalance. Canton-S flies had the lowest increase of ROS level compared to all the other strains, confirming it to be the less sensitive to hypoxic stress. Sod1n1 flies displayed the highest ROS levels in normoxia and after hypoxia. These results should be used to further standardize future Drosophila research models designed to investigate genes and pathways that may be involved in lifespan and/or ROS, as well as comparative studies on specific mutant strains. Summary: In our study Drosophila melanogaster was used to evaluate the effects of different environmental oxygen conditions on survival and ROS levels in three wild-type and one mutant strain.
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Affiliation(s)
- Sandro Malacrida
- Institute of Mountain Emergency Medicine, Eurac Research, Via Ipazia 2, 39100 Bolzano, Italy
| | - Federica De Lazzari
- MRC Mitochondrial Biology Unit, University of Cambridge, Cambridge Biomedical Campus, Cambridge, CB2 0XY, UK.,Physiology, Genetics and Behaviour Unit, Department of Biology, University of Padova, 35131 Padova, Italy
| | - Simona Mrakic-Sposta
- Institute of Clinical Physiology, National Research Council (CNR), 20162 Milan, Italy
| | - Alessandra Vezzoli
- Institute of Clinical Physiology, National Research Council (CNR), 20162 Milan, Italy
| | - Mauro A Zordan
- Physiology, Genetics and Behaviour Unit, Department of Biology, University of Padova, 35131 Padova, Italy
| | - Marco Bisaglia
- Physiology, Genetics and Behaviour Unit, Department of Biology, University of Padova, 35131 Padova, Italy
| | - Giulio Maria Menti
- Department of Biomedical Sciences, University of Padova, via U. Bassi 58/B, 35131 Padova, Italy
| | - Nicola Meda
- Department of Biomedical Sciences, University of Padova, via U. Bassi 58/B, 35131 Padova, Italy
| | - Giovanni Frighetto
- Department of Integrative Biology and Physiology, University of California, 610 Charles Young Drive East, Los Angeles, CA 90095-7239, USA
| | - Gerardo Bosco
- Department of Biomedical Science, University of Padova, Via Marzolo 3, 35121 Padova, Italy
| | - Tomas Dal Cappello
- Institute of Mountain Emergency Medicine, Eurac Research, Via Ipazia 2, 39100 Bolzano, Italy
| | - Giacomo Strapazzon
- Institute of Mountain Emergency Medicine, Eurac Research, Via Ipazia 2, 39100 Bolzano, Italy
| | - Carlo Reggiani
- Department of Biomedical Science, University of Padova, Via Marzolo 3, 35121 Padova, Italy
| | - Maristella Gussoni
- Institute of Chemical Sciences and Technologies "G. Natta"-SCITEC, National Research Council, CNR-SCITEC, Via A. Corti 12, 20133 Milan, Italy
| | - Aram Megighian
- Department of Biology, University of Padova, via U. Bassi 58/B, 35131 Padova, Italy; Padova Neuroscience Center, University of Padova, via Orus 2/B, 35131 Padova, Italy
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23
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Oulehri W, Collange O, Tacquard C, Bellou A, Graff J, Charles AL, Geny B, Mertes PM. Impaired Myocardial Mitochondrial Function in an Experimental Model of Anaphylactic Shock. BIOLOGY 2022; 11:730. [PMID: 35625458 PMCID: PMC9139016 DOI: 10.3390/biology11050730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 04/30/2022] [Accepted: 05/06/2022] [Indexed: 12/07/2022]
Abstract
Anaphylactic shock (AS) is associated with a profound vasodilation and cardiac dysfunction. The cellular mechanisms underlying AS-related cardiac dysfunction are unknown. We hypothesized that myocardial mitochondrial dysfunction may be associated with AS cardiac dysfunction. In controls and sensitized Brown Norway rats, shock was induced by ovalbumin i.v bolus, and abdominal aortic blood flow (ABF), systemic mean arterial pressure (MAP), and lactatemia were measured for 15 min. Myocardial mitochondrial function was assessed with the evaluation of mitochondrial respiration, oxidative stress production by reactive oxygen species (ROS), reactive nitrogen species (RNS), and the measurement of superoxide dismutases (SODs) activity. Oxidative damage was assessed by lipid peroxidation. The mitochondrial ultrastructure was assessed using transmission electronic microscopy. AS was associated with a dramatic drop in ABF and MAP combined with a severe hyperlactatemia 15 min after shock induction. CI-linked substrate state (197 ± 21 vs. 144 ± 21 pmol/s/mg, p < 0.05), OXPHOS activity by complexes I and II (411 ± 47 vs. 246 ± 33 pmol/s/mg, p < 0.05), and OXPHOS activity through complex II (316 ± 40 vs. 203 ± 28 pmol/s/mg, p < 0.05) were significantly impaired. ROS and RNS production was not significantly increased, but SODs activity was significantly higher in the AS group (11.15 ± 1.02 vs. 15.50 ± 1.40 U/mL/mg protein, p = 0.02). Finally, cardiac lipid peroxidation was significantly increased in the AS group (8.50 ± 0.67 vs. 12.17 ± 1.44 µM/mg protein, p < 0.05). No obvious changes were observed in the mitochondrial ultrastructure between CON and AS groups. Our experimental model of AS results in rapid and deleterious hemodynamic effects and was associated with a myocardial mitochondrial dysfunction with oxidative damage and without mitochondrial ultrastructural injury.
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Affiliation(s)
- Walid Oulehri
- Pôle Anesthésie, Réanimation Chirurgicale, Hôpitaux Universitaires de Strasbourg, 67091 Strasbourg, France; (W.O.); (O.C.); (C.T.)
- Faculté de Médecine de Strasbourg, UR 3072 Institut de Physiologie, FMTS (Fédération de Médecine Translationnelle de Strasbourg), Université de Strasbourg, 67091 Strasbourg, France; (A.-L.C.); (B.G.)
| | - Olivier Collange
- Pôle Anesthésie, Réanimation Chirurgicale, Hôpitaux Universitaires de Strasbourg, 67091 Strasbourg, France; (W.O.); (O.C.); (C.T.)
- Faculté de Médecine de Strasbourg, UR 3072 Institut de Physiologie, FMTS (Fédération de Médecine Translationnelle de Strasbourg), Université de Strasbourg, 67091 Strasbourg, France; (A.-L.C.); (B.G.)
| | - Charles Tacquard
- Pôle Anesthésie, Réanimation Chirurgicale, Hôpitaux Universitaires de Strasbourg, 67091 Strasbourg, France; (W.O.); (O.C.); (C.T.)
- Faculté de Médecine de Strasbourg, UR 3072 Institut de Physiologie, FMTS (Fédération de Médecine Translationnelle de Strasbourg), Université de Strasbourg, 67091 Strasbourg, France; (A.-L.C.); (B.G.)
| | - Abdelouahab Bellou
- Institute of Sciences in Emergency Medicine, Academy of Medical Sciences, Guangdong General People Hospital, Guangzhou 510060, China;
- Department of Emergency Medicine, Wayne State University School of Medicine, Detroit, MI 48201, USA
- Global Healthcare Network & Research Innovation Institute LLC, Brookline, MA 02446, USA
| | - Julien Graff
- Faculté de Médecine de Strasbourg, Institut d’Histologie, Service Central de Microscopie Électronique, FMTS (Fédération de Médecine Translationnelle de Strasbourg), Université de Strasbourg, 67091 Strasbourg, France;
| | - Anne-Laure Charles
- Faculté de Médecine de Strasbourg, UR 3072 Institut de Physiologie, FMTS (Fédération de Médecine Translationnelle de Strasbourg), Université de Strasbourg, 67091 Strasbourg, France; (A.-L.C.); (B.G.)
- Service de Physiologie et d’Explorations Fonctionnelles, Pôle de Pathologie Thoracique, Hôpitaux Universitaires de Strasbourg, 67091 Strasbourg, France
| | - Bernard Geny
- Faculté de Médecine de Strasbourg, UR 3072 Institut de Physiologie, FMTS (Fédération de Médecine Translationnelle de Strasbourg), Université de Strasbourg, 67091 Strasbourg, France; (A.-L.C.); (B.G.)
- Service de Physiologie et d’Explorations Fonctionnelles, Pôle de Pathologie Thoracique, Hôpitaux Universitaires de Strasbourg, 67091 Strasbourg, France
| | - Paul-Michel Mertes
- Pôle Anesthésie, Réanimation Chirurgicale, Hôpitaux Universitaires de Strasbourg, 67091 Strasbourg, France; (W.O.); (O.C.); (C.T.)
- Faculté de Médecine de Strasbourg, UR 3072 Institut de Physiologie, FMTS (Fédération de Médecine Translationnelle de Strasbourg), Université de Strasbourg, 67091 Strasbourg, France; (A.-L.C.); (B.G.)
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24
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Effects of Prolonged Exposure to Hypobaric Hypoxia on Oxidative Stress: Overwintering in Antarctic Concordia Station. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:4430032. [PMID: 35535360 PMCID: PMC9078816 DOI: 10.1155/2022/4430032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Revised: 03/25/2022] [Accepted: 04/09/2022] [Indexed: 12/14/2022]
Abstract
Concordia Station is the permanent, research station on the Antarctic Plateau at 3230 m. During the eleventh winter-over campaign (DC11-2015; February 2015 to November 2015) at Antarctic Concordia Station, 13 healthy team members were studied and blood samples were collected at six different time points: baseline measurements (T0), performed at sea level before the departure, and during the campaign at 3, 7, 20, 90, and 300 days after arrival at Concordia Station. Reducing the partial pressure of O2 as barometric pressure falls, hypobaric hypoxia (HH) triggers several physiological adaptations. Among the others, increased oxidative stress and enhanced generation of reactive oxygen/nitrogen species (ROS/RNS), resulting in severe oxidative damage, were observed, which can share potential physiopathological mechanisms associated with many diseases. This study characterized the extent and time-course changes after acute and chronic HH exposure, elucidating possible fundamental mechanisms of adaptation. ROS, oxidative stress biomarkers, nitric oxide, and proinflammatory cytokines significantly increased (range 24-135%) during acute and chronic hypoxia exposure (peak 20th day) with a decrease in antioxidant capacity (peak 90th day: -52%). Results suggest that the adaptive response of oxidative stress balance to HH requires a relatively long time, more than 300th days, as all the observed variables do not return to the preexposition level. These findings may also be relevant to patients in whom oxygen availability is limited through disease (i.e., chronic heart and lung and/or kidney disease) and/or during long-duration space missions.
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25
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Kumar V, Mishra RK, Ghose D, Kalita A, Dhiman P, Prakash A, Thakur N, Mitra G, Chaudhari VD, Arora A, Dutta D. Free spermidine evokes superoxide radicals that manifest toxicity. eLife 2022; 11:77704. [PMID: 35416771 PMCID: PMC9038194 DOI: 10.7554/elife.77704] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 04/11/2022] [Indexed: 11/25/2022] Open
Abstract
Spermidine and other polyamines alleviate oxidative stress, yet excess spermidine seems toxic to Escherichia coli unless it is neutralized by SpeG, an enzyme for the spermidine N-acetyl transferase function. Thus, wild-type E. coli can tolerate applied exogenous spermidine stress, but ΔspeG strain of E. coli fails to do that. Here, using different reactive oxygen species (ROS) probes and performing electron paramagnetic resonance spectroscopy, we provide evidence that although spermidine mitigates oxidative stress by lowering overall ROS levels, excess of it simultaneously triggers the production of superoxide radicals, thereby causing toxicity in the ΔspeG strain. Furthermore, performing microarray experiment and other biochemical assays, we show that the spermidine-induced superoxide anions affected redox balance and iron homeostasis. Finally, we demonstrate that while RNA-bound spermidine inhibits iron oxidation, free spermidine interacts and oxidizes the iron to evoke superoxide radicals directly. Therefore, we propose that the spermidine-induced superoxide generation is one of the major causes of spermidine toxicity in E. coli.
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Affiliation(s)
- Vineet Kumar
- CSIR Institute of Microbial Technology, Chandigarh, India
| | | | | | - Arunima Kalita
- CSIR Institute of Microbial Technology, Chandigarh, India
| | - Pulkit Dhiman
- CSIR Institute of Microbial Technology, Chandigarh, India
| | - Anand Prakash
- CSIR Institute of Microbial Technology, Chandigarh, India
| | - Nirja Thakur
- CSIR Institute of Microbial Technology, Chandigarh, India
| | - Gopa Mitra
- Division of Molecular Medicine, St John's Medical College Hospital, Bangalore, India
| | | | - Amit Arora
- CSIR Institute of Microbial Technology, Chandigarh, India
| | - Dipak Dutta
- CSIR Institute of Microbial Technology, Chandigarh, India
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26
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Zheng X, Narayanan S, Xu C, Eliasson Angelstig S, Grünler J, Zhao A, Di Toro A, Bernardi L, Mazzone M, Carmeliet P, Del Sole M, Solaini G, Forsberg EA, Zhang A, Brismar K, Schiffer TA, Rajamand Ekberg N, Botusan IR, Palm F, Catrina SB. Repression of hypoxia-inducible factor-1 contributes to increased mitochondrial reactive oxygen species production in diabetes. eLife 2022; 11:70714. [PMID: 35164902 PMCID: PMC8846593 DOI: 10.7554/elife.70714] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 01/27/2022] [Indexed: 12/19/2022] Open
Abstract
Background: Excessive production of mitochondrial reactive oxygen species (ROS) is a central mechanism for the development of diabetes complications. Recently, hypoxia has been identified to play an additional pathogenic role in diabetes. In this study, we hypothesized that ROS overproduction was secondary to the impaired responses to hypoxia due to the inhibition of hypoxia-inducible factor-1 (HIF-1) by hyperglycemia. Methods: The ROS levels were analyzed in the blood of healthy subjects and individuals with type 1 diabetes after exposure to hypoxia. The relation between HIF-1, glucose levels, ROS production and its functional consequences were analyzed in renal mIMCD-3 cells and in kidneys of mouse models of diabetes. Results: Exposure to hypoxia increased circulating ROS in subjects with diabetes, but not in subjects without diabetes. High glucose concentrations repressed HIF-1 both in hypoxic cells and in kidneys of animals with diabetes, through a HIF prolyl-hydroxylase (PHD)-dependent mechanism. The impaired HIF-1 signaling contributed to excess production of mitochondrial ROS through increased mitochondrial respiration that was mediated by Pyruvate dehydrogenase kinase 1 (PDK1). The restoration of HIF-1 function attenuated ROS overproduction despite persistent hyperglycemia, and conferred protection against apoptosis and renal injury in diabetes. Conclusions: We conclude that the repression of HIF-1 plays a central role in mitochondrial ROS overproduction in diabetes and is a potential therapeutic target for diabetic complications. These findings are timely since the first PHD inhibitor that can activate HIF-1 has been newly approved for clinical use. Funding: This work was supported by grants from the Swedish Research Council, Stockholm County Research Council, Stockholm Regional Research Foundation, Bert von Kantzows Foundation, Swedish Society of Medicine, Kung Gustaf V:s och Drottning Victorias Frimurarestifelse, Karolinska Institute’s Research Foundations, Strategic Research Programme in Diabetes, and Erling-Persson Family Foundation for S-B.C.; grants from the Swedish Research Council and Swedish Heart and Lung Foundation for T.A.S.; and ERC consolidator grant for M.M.
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Affiliation(s)
- Xiaowei Zheng
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - Sampath Narayanan
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - Cheng Xu
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | | | - Jacob Grünler
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - Allan Zhao
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - Alessandro Di Toro
- Centre for Inherited Cardiovascular Diseases, IRCCS Foundation University Hospital Policlinico San Matteo, Pavia, Italy
| | - Luciano Bernardi
- Folkälsan Research Center, Folkälsan Institute of Genetics, University of Helsinki, Helsinki, Finland
| | - Massimiliano Mazzone
- Laboratory of Tumor Inflammation and Angiogenesis, Center for Cancer Biology, Vlaams Instituut voor Biotechnologie (VIB); Laboratory of Tumor Inflammation and Angiogenesis, Center for Cancer Biology, Department of Oncology, Katholieke Universiteit (KU) Leuven, Leuven, Belgium
| | - Peter Carmeliet
- Laboratory of Angiogenesis and Vascular Metabolism, Department of Oncology, Katholieke Universiteit (KU) Leuven; Laboratory of Angiogenesis and Vascular Metabolism, Vesalius Research Center, Vlaams Instituut voor Biotechnologie (VIB), Leuven, Belgium
| | - Marianna Del Sole
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | | | - Elisabete A Forsberg
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - Ao Zhang
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - Kerstin Brismar
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - Tomas A Schiffer
- Department of Medical Cell Biology, Uppsala University, Uppsala, Sweden
| | - Neda Rajamand Ekberg
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden.,Department of Endocrinology and Diabetes, Karolinska University Hospital, Stockholm, Sweden.,Center for Diabetes, Academic Specialist Centrum, Stockholm, Sweden
| | - Ileana Ruxandra Botusan
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden.,Department of Endocrinology and Diabetes, Karolinska University Hospital, Stockholm, Sweden.,Center for Diabetes, Academic Specialist Centrum, Stockholm, Sweden
| | - Fredrik Palm
- Department of Medical Cell Biology, Uppsala University, Uppsala, Sweden
| | - Sergiu-Bogdan Catrina
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden.,Department of Endocrinology and Diabetes, Karolinska University Hospital, Stockholm, Sweden.,Center for Diabetes, Academic Specialist Centrum, Stockholm, Sweden
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27
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Pierzchala K, Simicic D, Sienkiewicz A, Sessa D, Mitrea S, Braissant O, McLin VA, Gruetter R, Cudalbu C. Central nervous system and systemic oxidative stress interplay with inflammation in a bile duct ligation rat model of type C hepatic encephalopathy. Free Radic Biol Med 2022; 178:295-307. [PMID: 34890769 DOI: 10.1016/j.freeradbiomed.2021.12.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/12/2021] [Accepted: 12/06/2021] [Indexed: 02/07/2023]
Abstract
The role and coexistence of oxidative stress (OS) and inflammation in type C hepatic encephalopathy (C HE) is a subject of intense debate. Under normal conditions the physiological levels of intracellular reactive oxygen species are controlled by the counteracting antioxidant response to maintain redox homeostasis. Our previous in-vivo1H-MRS studies revealed the longitudinal impairment of the antioxidant system (ascorbate) in a bile-duct ligation (BDL) rat model of type C HE. Therefore, the aim of this work was to examine the course of central nervous system (CNS) OS and systemic OS, as well as to check for their co-existence with inflammation in the BDL rat model of type C HE. To this end, we implemented a multidisciplinary approach, including ex-vivo and in-vitro electron paramagnetic resonance spectroscopy (EPR) spin-trapping, which was combined with UV-Vis spectroscopy, and histological assessments. We hypothesized that OS and inflammation act synergistically in the pathophysiology of type C HE. Our findings point to an increased CNS- and systemic-OS and inflammation over the course of type C HE progression. In particular, an increase in the CNS OS was observed as early as 2-weeks post-BDL, while the systemic OS became significant at week 6 post-BDL. The CNS EPR measurements were further validated by a substantial accumulation of 8-Oxo-2'-deoxyguanosine (Oxo-8-dG), a marker of oxidative DNA/RNA modifications on immunohistochemistry (IHC). Using IHC, we also detected increased synthesis of antioxidants, glutathione peroxidase 1 (GPX-1) and superoxide dismutases (i.e.Cu/ZnSOD (SOD1) and MnSOD (SOD2)), along with proinflammatory cytokine interleukin-6 (IL-6) in the brains of BDL rats. The presence of systemic inflammation was observed already at 2-weeks post-surgery. Thus, these results suggest that CNS OS is an early event in type C HE rat model, which seems to precede systemic OS. Finally, our results suggest that the increase in CNS OS is due to enhanced formation of intra- and extra-cellular ROS rather than due to reduced antioxidant capacity, and that OS in parallel with inflammation plays a significant role in type C HE.
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Affiliation(s)
- K Pierzchala
- Center for Biomedical Imaging, EPFL, Lausanne, Switzerland; Animal Imaging and Technology, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland; Laboratory of Functional and Metabolic Imaging, EPFL, Lausanne, Switzerland.
| | - D Simicic
- Center for Biomedical Imaging, EPFL, Lausanne, Switzerland; Animal Imaging and Technology, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland; Laboratory of Functional and Metabolic Imaging, EPFL, Lausanne, Switzerland
| | - A Sienkiewicz
- Laboratory for Quantum Magnetism, Institute of Physics, EPFL, Lausanne, Switzerland; ADSresonances Sàrl, Préverenges, Switzerland
| | - D Sessa
- Swiss Pediatric Liver Center, Department of Pediatrics, Gynecology and Obstetrics, University Hospitals Geneva and University of Geneva, Geneva, Switzerland
| | - S Mitrea
- Center for Biomedical Imaging, EPFL, Lausanne, Switzerland; Animal Imaging and Technology, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - O Braissant
- Service of Clinical Chemistry, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - V A McLin
- Swiss Pediatric Liver Center, Department of Pediatrics, Gynecology and Obstetrics, University Hospitals Geneva and University of Geneva, Geneva, Switzerland
| | - R Gruetter
- Center for Biomedical Imaging, EPFL, Lausanne, Switzerland; Laboratory of Functional and Metabolic Imaging, EPFL, Lausanne, Switzerland
| | - C Cudalbu
- Center for Biomedical Imaging, EPFL, Lausanne, Switzerland; Animal Imaging and Technology, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
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Cyclic Hydroxylamines as Monitors of Peroxynitrite and Superoxide-Revisited. Antioxidants (Basel) 2021; 11:antiox11010040. [PMID: 35052544 PMCID: PMC8772899 DOI: 10.3390/antiox11010040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 12/16/2021] [Accepted: 12/21/2021] [Indexed: 11/16/2022] Open
Abstract
There is a considerable need for methods that allow quantitative determination in vitro and in vivo of transient oxidative species such as peroxynitrite (ONOOH/ONOO-) and superoxide (HO2•/O2•-). Cyclic hydroxylamines, which upon oxidation yield their respective stable nitroxide radicals, have been suggested as spin probes of peroxynitrite and superoxide. The present study investigated this approach by following the kinetics of peroxynitrite decay in the absence and presence of various 5-membered and 6-membered ring hydroxylamines, and comparing the yield of their respective nitroxides using electron paramagnetic spectroscopy. The results demonstrate that hydroxylamines do not react directly with peroxynitrite, but are oxidized to their respective nitroxides by the radicals formed during peroxynitrite self-decomposition, namely •OH and •NO2. The accumulated nitroxides are far below their expected yield, had the hydroxylamines fully scavenged all these radicals, due to multiple competing reactions of the oxidized forms of the hydroxylamines with •NO2 and ONOO-. Therefore, cyclic hydroxylamines cannot be used for quantitative assay of peroxynitrite in vitro. The situation is even more complex in vivo where •OH and •NO2 are formed also via other oxidizing reactions systems. The present study also compared the yield of accumulated nitroxides under constant flux of superoxide in the presence of various cyclic hydroxylamines. It is demonstrated that certain 5-membered ring hydroxylamines, which their respective nitroxides are poor SOD-mimics, might be considered as stoichiometric monitors of superoxide in vitro at highest possible concentrations and pH.
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Rivellini C, Porrello E, Dina G, Mrakic-Sposta S, Vezzoli A, Bacigaluppi M, Gullotta GS, Chaabane L, Leocani L, Marenna S, Colombo E, Farina C, Newcombe J, Nave KA, Pardi R, Quattrini A, Previtali SC. JAB1 deletion in oligodendrocytes causes senescence-induced inflammation and neurodegeneration in mice. J Clin Invest 2021; 132:145071. [PMID: 34874913 PMCID: PMC8803330 DOI: 10.1172/jci145071] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Accepted: 11/30/2021] [Indexed: 11/17/2022] Open
Abstract
Oligodendrocytes are the primary target of demyelinating disorders and progressive neurodegenerative changes may evolve in the CNS. DNA damage and oxidative stress are considered key pathogenic events, but the underlying molecular mechanisms remain unclear. Moreover, animal models do not fully recapitulate human diseases, complicating the path to effective treatments. Here we report that mice with cell autonomous deletion of the nuclear COP9 signalosome component CSN5 (JAB1) in oligodendrocytes develop DNA damage and defective DNA repair in myelinating glial cells. Interestingly, oligodendrocytes lacking JAB1 expression underwent a senescence-like phenotype that fostered chronic inflammation and oxidative stress. These mutants developed progressive CNS demyelination, microglia inflammation and neurodegeneration, with severe motor deficits and premature death. Notably, blocking microglia inflammation did not prevent neurodegeneration, whereas the deletion of p21CIP1 but not p16INK4a pathway ameliorated the disease. We suggest that senescence is key to sustaining neurodegeneration in demyelinating disorders and may be considered a potential therapeutic target.
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Affiliation(s)
- Cristina Rivellini
- Institute of Experimental Neurology (INSPE), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Emanuela Porrello
- Institute of Experimental Neurology (INSPE), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Giorgia Dina
- Institute of Experimental Neurology (INSPE), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Simona Mrakic-Sposta
- Institute of Clinical Physiology National Research Council, ICF-CNR, Milan, Italy
| | - Alessandra Vezzoli
- Institute of Clinical Physiology National Research Council, ICF-CNR, Milan, Italy
| | - Marco Bacigaluppi
- Institute of Experimental Neurology (INSPE), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Giorgia Serena Gullotta
- Institute of Experimental Neurology (INSPE), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Linda Chaabane
- Institute of Experimental Neurology (INSPE), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Letizia Leocani
- Institute of Experimental Neurology (INSPE), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Silvia Marenna
- Institute of Experimental Neurology (INSPE), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Emanuela Colombo
- Institute of Experimental Neurology (INSPE), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Cinthia Farina
- Institute of Experimental Neurology (INSPE), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Jia Newcombe
- Department of Neuroinflammation, UCL Queen Square Institute of Neurology, London, United Kingdom
| | - Klaus-Armin Nave
- Department of Neurogenetics, Max Planck Institute for Experimental Medicine, Göttingen, Germany
| | - Ruggero Pardi
- Division of Immunology, Transplantation, and Infectious Disease, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Angelo Quattrini
- Institute of Experimental Neurology (INSPE), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Stefano C Previtali
- Institute of Experimental Neurology (INSPE), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
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Myeloperoxidase-induced modification of HDL by isolevuglandins inhibits paraoxonase-1 activity. J Biol Chem 2021; 297:101019. [PMID: 34331945 PMCID: PMC8390528 DOI: 10.1016/j.jbc.2021.101019] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 07/09/2021] [Accepted: 07/27/2021] [Indexed: 11/21/2022] Open
Abstract
Reduced activity of paraoxonase 1 (PON1), a high-density lipoprotein (HDL)-associated enzyme, has been implicated in the development of atherosclerosis. Post-translational modifications of PON1 may represent important mechanisms leading to reduced PON1 activity. Under atherosclerotic conditions, myeloperoxidase (MPO) is known to associate with HDL. MPO generates the oxidants hypochlorous acid and nitrogen dioxide, which can lead to post-translational modification of PON1, including tyrosine modifications that inhibit PON1 activity. Nitrogen dioxide also drives lipid peroxidation, leading to the formation of reactive lipid dicarbonyls such as malondialdehyde and isolevuglandins, which modify HDL and could inhibit PON1 activity. Because isolevuglandins are more reactive than malondialdehyde, we used in vitro models containing HDL, PON1, and MPO to test the hypothesis that IsoLG formation by MPO and its subsequent modification of HDL contributes to MPO-mediated reductions in PON1 activity. Incubation of MPO with HDL led to modification of HDL proteins, including PON1, by IsoLG. Incubation of HDL with IsoLG reduced PON1 lactonase and antiperoxidation activities. IsoLG modification of recombinant PON1 markedly inhibited its activity, while irreversible IsoLG modification of HDL before adding recombinant PON1 only slightly inhibited the ability of HDL to enhance the catalytic activity of recombinant PON1. Together, these studies support the notion that association of MPO with HDL leads to lower PON1 activity in part via IsoLG-mediated modification of PON1, so that IsoLG modification of PON1 could contribute to increased risk for atherosclerosis, and blocking this modification might prove beneficial to reduce atherosclerosis.
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Preisz Z, Hartvig N, Bognár B, Kálai T, Kunsági-Máté S. Comparative EPR Study on the Scavenging Effect of Methotrexate with the Isomers of Its Photoswitchable Derivative. Pharmaceuticals (Basel) 2021; 14:ph14070665. [PMID: 34358091 PMCID: PMC8308517 DOI: 10.3390/ph14070665] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 07/05/2021] [Accepted: 07/07/2021] [Indexed: 12/12/2022] Open
Abstract
The scavenging effect of the antimetabolite dihydrofolate reductase inhibitor methotrexate (MTX) and the isomers of its photoswitchable derivate, cis- and trans-phototrexate (PHX), have been compared by ESR spectroscopy, with the application of a cyclic hydroxylamine spin probe. The results showed the most pronounced scavenging effect in the presence of trans-phototrexate (trans-PHX). At a low concentration (100 µM) cis-PHX also showed a greater scavenging effect than the parent molecule MTX. Direct antioxidant properties of the investigated molecules were measured by ABTS scavenging assay, which showed no significant difference between trans-PHX and cis-PHX, but both of the isomers of PHX showed a higher antioxidant capacity than MTX. These findings imply that trans-PHX may have more pronounced anti-inflammatory and tissue-protective effects than MTX, despite the lack of its cytotoxic, antineoplastic effect.
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Affiliation(s)
- Zsolt Preisz
- Institute of Organic and Medicinal Chemistry, Faculty of Pharmacy, University of Pécs, Szigeti 12, H-7624 Pécs, Hungary; (Z.P.); (B.B.); (T.K.)
- Department of General and Physical Chemistry, Faculty of Sciences, University of Pécs, Ifjúság 6, H-7624 Pécs, Hungary
| | - Nóra Hartvig
- János Szentágothai Research Center, University of Pécs, Ifjúság 20, H-7624 Pécs, Hungary;
| | - Balázs Bognár
- Institute of Organic and Medicinal Chemistry, Faculty of Pharmacy, University of Pécs, Szigeti 12, H-7624 Pécs, Hungary; (Z.P.); (B.B.); (T.K.)
| | - Tamás Kálai
- Institute of Organic and Medicinal Chemistry, Faculty of Pharmacy, University of Pécs, Szigeti 12, H-7624 Pécs, Hungary; (Z.P.); (B.B.); (T.K.)
- János Szentágothai Research Center, University of Pécs, Ifjúság 20, H-7624 Pécs, Hungary;
| | - Sándor Kunsági-Máté
- Institute of Organic and Medicinal Chemistry, Faculty of Pharmacy, University of Pécs, Szigeti 12, H-7624 Pécs, Hungary; (Z.P.); (B.B.); (T.K.)
- Department of General and Physical Chemistry, Faculty of Sciences, University of Pécs, Ifjúság 6, H-7624 Pécs, Hungary
- János Szentágothai Research Center, University of Pécs, Ifjúság 20, H-7624 Pécs, Hungary;
- Correspondence:
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Mrakic-Sposta S, Gussoni M, Montorsi M, Vezzoli A. Comment on Menzel et al. Common and Novel Markers for Measuring Inflammation and Oxidative Stress Ex Vivo in Research and Clinical Practice-Which to Use Regarding Disease Outcomes? Antioxidants 2021, 10, 414. Antioxidants (Basel) 2021; 10:antiox10060836. [PMID: 34073807 PMCID: PMC8225111 DOI: 10.3390/antiox10060836] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 04/23/2021] [Accepted: 05/11/2021] [Indexed: 11/16/2022] Open
Affiliation(s)
- Simona Mrakic-Sposta
- National Research Council—Institute of Clinical Physiology (CNR-IFC), 20162 Milan, Italy;
- Correspondence:
| | - Maristella Gussoni
- National Research Council—Institute of Chemical Sciences and Technologies “G. Natta”-SCITEC (CNR-SCITEC), 20133 Milan, Italy;
| | - Michela Montorsi
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Roma Open University, 20122 Milan, Italy;
| | - Alessandra Vezzoli
- National Research Council—Institute of Clinical Physiology (CNR-IFC), 20162 Milan, Italy;
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Petrova B, Warren A, Vital NY, Culhane AJ, Maynard AG, Wong A, Kanarek N. Redox Metabolism Measurement in Mammalian Cells and Tissues by LC-MS. Metabolites 2021; 11:metabo11050313. [PMID: 34068241 PMCID: PMC8153172 DOI: 10.3390/metabo11050313] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 04/29/2021] [Accepted: 05/10/2021] [Indexed: 11/16/2022] Open
Abstract
Cellular redox state is highly dynamic and delicately balanced between constant production of reactive oxygen species (ROS), and neutralization by endogenous antioxidants, such as glutathione. Physiologic ROS levels can function as signal transduction messengers, while high levels of ROS can react with and damage various molecules eliciting cellular toxicity. The redox state is reflective of the cell’s metabolic status and can inform on regulated cell-state transitions or various pathologies including aging and cancer. Therefore, methods that enable reliable, quantitative readout of the cellular redox state are imperative for scientists from multiple fields. Liquid-chromatography mass-spectrometry (LC-MS) based methods to detect small molecules that reflect the redox balance in the cell such as glutathione, NADH, and NADPH, have been developed and applied successfully, but because redox metabolites are very labile, these methods are not easily standardized or consolidated. Here, we report a robust LC-MS method for the simultaneous detection of several redox-reactive metabolites that is compatible with parallel global metabolic profiling in mammalian cells. We performed a comprehensive comparison between three commercial hydrophilic interaction chromatography (HILIC) columns, and we describe the application of our method in mammalian cells and tissues. The presented method is easily applicable and will enable the study of ROS function and oxidative stress in mammalian cells by researchers from various fields.
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Affiliation(s)
- Boryana Petrova
- Department of Pathology, Boston Children’s Hospital, 300 Longwood Avenue, Boston, MA 02115, USA; (B.P.); (A.W.); (N.Y.V.); (A.J.C.); (A.G.M.); (A.W.)
- Harvard Medical School, Boston, MA 02115, USA
| | - Anna Warren
- Department of Pathology, Boston Children’s Hospital, 300 Longwood Avenue, Boston, MA 02115, USA; (B.P.); (A.W.); (N.Y.V.); (A.J.C.); (A.G.M.); (A.W.)
| | - Nuria Yulia Vital
- Department of Pathology, Boston Children’s Hospital, 300 Longwood Avenue, Boston, MA 02115, USA; (B.P.); (A.W.); (N.Y.V.); (A.J.C.); (A.G.M.); (A.W.)
| | - Andrew J. Culhane
- Department of Pathology, Boston Children’s Hospital, 300 Longwood Avenue, Boston, MA 02115, USA; (B.P.); (A.W.); (N.Y.V.); (A.J.C.); (A.G.M.); (A.W.)
| | - Adam G. Maynard
- Department of Pathology, Boston Children’s Hospital, 300 Longwood Avenue, Boston, MA 02115, USA; (B.P.); (A.W.); (N.Y.V.); (A.J.C.); (A.G.M.); (A.W.)
- Program in Biological and Biomedical Sciences, Harvard Medical School, Boston, MA 02115, USA
| | - Alan Wong
- Department of Pathology, Boston Children’s Hospital, 300 Longwood Avenue, Boston, MA 02115, USA; (B.P.); (A.W.); (N.Y.V.); (A.J.C.); (A.G.M.); (A.W.)
- Program in Biological and Biomedical Sciences, Harvard Medical School, Boston, MA 02115, USA
| | - Naama Kanarek
- Department of Pathology, Boston Children’s Hospital, 300 Longwood Avenue, Boston, MA 02115, USA; (B.P.); (A.W.); (N.Y.V.); (A.J.C.); (A.G.M.); (A.W.)
- Harvard Medical School, Boston, MA 02115, USA
- Broad Institute of Harvard and Massachusetts Institute of Technology, 415 Main Street, Cambridge, MA 02142, USA
- Correspondence: ; Tel.: +1-617-919-7352
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Ji K, Shan J, Wang X, Tan X, Hou J, Liu Y, Song Y. Rational design of near-infrared fluorescent probes for superoxide anion radical: Enhancement of self-stability and sensitivity by self-immolative linker. Free Radic Biol Med 2021; 167:36-44. [PMID: 33711416 DOI: 10.1016/j.freeradbiomed.2021.02.029] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 02/19/2021] [Accepted: 02/22/2021] [Indexed: 01/09/2023]
Abstract
Fluorescent imaging of cellular superoxide anion radical (O2•-) is of great significance to investigate reactive oxygen species-related pathophysiological processes and drug metabolism. However, the application of this technique is far away from maximum partially due to the lack of suitable probes. In this work, we propose a new strategy for design of near-infrared (NIR) O2•- fluorescent probes in which p-cresol is used as a self-immolative linker to conjugate the NIR fluorophore DDAO (9H-1,3-Dichloro-7-hydroxy-9,9-dimethylacridine-2-one) with the O2•--sensing group (i.e., trifluoromethanesulfonate). The introduction of self-immolative linker effectively increases the self-stability of these probes under physiological conditions. Importantly, the electron-withdrawing halogen substituents on the linker greatly enhance the sensitivity of the probes to O2•-. As such, the representative probe DLS4 exhibits high self-stability over a broad range of pHs (5.0-8.5), high selectivity as well as excellent sensitivity to O2•- with a detection limit (LOD) of 7.3 nM and 720-fold fluorescence enhancement upon reaction with O2•-. Moreover, DLS4 enables imaging of O2•- generation in PMA-stimulated RAW 264.7 cells and HeLa cells, and the fluorescence intensities are proportional to the PMA concentrations. In addition, the doxorubicin-induced cytotoxicity of H9c2 cells was also evaluated using DLS4. The present study provides a novel strategy for molecular design of small-molecule O2•- fluorescent probes and the resulting probes show great potential as reliable tools to study the development and progression of O2•--related diseases and drug metabolism in various systems.
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Affiliation(s)
- Kaiyun Ji
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, 300070, PR China; Jincheng General Hospital, Jincheng, Shanxi Province, 048000, PR China
| | - Jinpeng Shan
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, 300070, PR China
| | - Xing Wang
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, 300070, PR China; Tianjin Eye Hospital, Tianjin, 300020, PR China
| | - Xiaoli Tan
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, 300070, PR China
| | - Jingli Hou
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, 300070, PR China
| | - Yangping Liu
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, 300070, PR China
| | - Yuguang Song
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, 300070, PR China.
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Zeng Z, Centner C, Gollhofer A, König D. Effects of Dietary Strategies on Exercise-Induced Oxidative Stress: A Narrative Review of Human Studies. Antioxidants (Basel) 2021; 10:antiox10040542. [PMID: 33807377 PMCID: PMC8066171 DOI: 10.3390/antiox10040542] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 03/27/2021] [Accepted: 03/29/2021] [Indexed: 12/26/2022] Open
Abstract
Exhaustive exercise can induce excessive generation of reactive oxygen species (ROS), which may enhance oxidative stress levels. Although physiological levels are crucial for optimal cell signaling and exercise adaptations, higher concentrations have been demonstrated to damage macromolecules and thus facilitate detrimental effects. Besides single dosages of antioxidants, whole diets rich in antioxidants are gaining more attention due to their practicality and multicomponent ingredients. The purpose of this narrative review is to summarize the current state of research on this topic and present recent advances regarding the antioxidant effects of whole dietary strategies on exercise-induced oxidative stress in humans. The following electronic databases were searched from inception to February 2021: PubMed, Scope and Web of Science. Twenty-eight studies were included in this narrative review and demonstrated the scavenging effects of exercise-induced ROS generation, oxidative stress markers, inflammatory markers and antioxidant capacity, with only one study not confirming such positive effects. Although the literature is still scarce about the effects of whole dietary strategies on exercise-induced oxidative stress, the majority of the studies demonstrated favorable effects. Nevertheless, the protocols are still very heterogeneous and further systematically designed studies are needed to strengthen the evidence.
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Affiliation(s)
- Zhen Zeng
- Department of Sport and Sport Science, University of Freiburg, 79117 Freiburg, Germany; (C.C.); (A.G.)
- School of Sports Medicine and Health, Chengdu Sport University, Chengdu 610041, China
- Correspondence:
| | - Christoph Centner
- Department of Sport and Sport Science, University of Freiburg, 79117 Freiburg, Germany; (C.C.); (A.G.)
- Praxisklinik Rennbahn, 4132 Muttenz, Switzerland
| | - Albert Gollhofer
- Department of Sport and Sport Science, University of Freiburg, 79117 Freiburg, Germany; (C.C.); (A.G.)
| | - Daniel König
- Centre of Sports Science, Department for Nutrition, Exercise and Health, University of Vienna, 1150 Vienna, Austria;
- Faculty of Life Sciences, Department for Nutrition, Exercise and Health, University of Vienna, 1090 Vienna, Austria
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MicroRNA-194 acts as a suppressor during abdominal aortic aneurysm via inhibition of KDM3A-mediated BNIP3. Life Sci 2021; 277:119309. [PMID: 33662431 DOI: 10.1016/j.lfs.2021.119309] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 02/19/2021] [Accepted: 02/26/2021] [Indexed: 11/21/2022]
Abstract
AIMS Abdominal aortic aneurysm (AAA) is a serious disorder with a high disability rates and mortality rates. Accumulating evidence has identified the vital functions of microRNAs (miRNAs) in the treatment of AAA. Hence, this study is aimed at exploring the modulatory role of miR-194 in the development of AAA. MAIN METHODS After the establishment of mouse AAA models, the expression of miR-194 was determined by quantitative reverse transcription polymerase chain reaction (RT-qPCR), while lysine demethylase 3A (KDM3A) was determined by Western blot analysis in vascular smooth muscle cells (VSMCs) from the abdominal aorta. Cell apoptosis, levels of inflammatory factors as well as expressions of matrix metallopeptidase 2 (MMP2) and matrix metallopeptidase 9 (MMP9) were measured after altering the expression of miR-194 and KDM3A in VSMCs. Moreover, the interactions among miR-194, KDM3A, and BCL2 interacting protein 3 (BNIP3) were investigated by chromatin immunoprecipitation (ChIP) assay and dual-luciferase reporter gene assay. KEY FINDINGS miR-194 was poorly expressed while the expression of KDM3A was up-regulated in mice with AAA. miR-194 inhibited the expression of KDM3A while BNIP3 was positively mediated by KDM3A. More importantly, the number of macrophages was significantly reduced whereas the rate of apoptosis in VSMCs was enhanced. miR-194 reduced the inflammatory response and oxidative stress by repressing KDM3A-mediated BNIP3 expression. SIGNIFICANCES miR-194 played a suppressive role in the progression of AAA by inhibiting the expression of BNIP3 via KDM3A, representing a promising target for AAA management.
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Lazarova D, Semkova S, Zlateva G, Tatsuya H, Aoki I, Bakalova R. Quantum Sensors To Track Total Redox-Status and Oxidative Stress in Cells and Tissues Using Electron-Paramagnetic Resonance, Magnetic Resonance Imaging, and Optical Imaging. Anal Chem 2021; 93:2828-2837. [DOI: 10.1021/acs.analchem.0c04116] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Dessislava Lazarova
- Faculty of Medicine, Sofia University “St. Kliment Ohridski”, 1 Koziak Str., Sofia 1407, Bulgaria
| | - Severina Semkova
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, 21 Acad. G. Bonchev Str., Sofia 1113, Bulgaria
| | - Genoveva Zlateva
- Faculty of Medicine, Sofia University “St. Kliment Ohridski”, 1 Koziak Str., Sofia 1407, Bulgaria
| | - Higashi Tatsuya
- Department of Molecular Imaging and Theranostics, National Institutes for Quantum and Radiological Science and Technology (QST/NIRS), 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
| | - Ichio Aoki
- Department of Molecular Imaging and Theranostics, National Institutes for Quantum and Radiological Science and Technology (QST/NIRS), 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
| | - Rumiana Bakalova
- Department of Molecular Imaging and Theranostics, National Institutes for Quantum and Radiological Science and Technology (QST/NIRS), 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
- Faculty of Medicine, Sofia University “St. Kliment Ohridski”, 1 Koziak Str., Sofia 1407, Bulgaria
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Comprehensive Review of Methodology to Detect Reactive Oxygen Species (ROS) in Mammalian Species and Establish Its Relationship with Antioxidants and Cancer. Antioxidants (Basel) 2021; 10:antiox10010128. [PMID: 33477494 PMCID: PMC7831054 DOI: 10.3390/antiox10010128] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 01/09/2021] [Accepted: 01/13/2021] [Indexed: 12/17/2022] Open
Abstract
Evidence suggests that reactive oxygen species (ROS) mediate tissue homeostasis, cellular signaling, differentiation, and survival. ROS and antioxidants exert both beneficial and harmful effects on cancer. ROS at different concentrations exhibit different functions. This creates necessity to understand the relation between ROS, antioxidants, and cancer, and methods for detection of ROS. This review highlights various sources and types of ROS, their tumorigenic and tumor prevention effects; types of antioxidants, their tumorigenic and tumor prevention effects; and abnormal ROS detoxification in cancer; and methods to measure ROS. We conclude that improving genetic screening methods and bringing higher clarity in determination of enzymatic pathways and scale-up in cancer models profiling, using omics technology, would support in-depth understanding of antioxidant pathways and ROS complexities. Although numerous methods for ROS detection are developing very rapidly, yet further modifications are required to minimize the limitations associated with currently available methods.
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Kryukov VY, Rotskaya U, Yaroslavtseva O, Polenogova O, Kryukova N, Akhanaev Y, Krivopalov A, Alikina T, Vorontsova YL, Slepneva I, Kabilov M, Glupov VV. Fungus Metarhizium robertsii and neurotoxic insecticide affect gut immunity and microbiota in Colorado potato beetles. Sci Rep 2021; 11:1299. [PMID: 33446848 PMCID: PMC7809261 DOI: 10.1038/s41598-020-80565-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Accepted: 12/14/2020] [Indexed: 12/13/2022] Open
Abstract
Fungal infections and toxicoses caused by insecticides may alter microbial communities and immune responses in the insect gut. We investigated the effects of Metarhizium robertsii fungus and avermectins on the midgut physiology of Colorado potato beetle larvae. We analyzed changes in the bacterial community, immunity- and stress-related gene expression, reactive oxygen species (ROS) production, and detoxification enzyme activity in response to topical infection with the M. robertsii fungus, oral administration of avermectins, and a combination of the two treatments. Avermectin treatment led to a reduction in microbiota diversity and an enhancement in the abundance of enterobacteria, and these changes were followed by the downregulation of Stat and Hsp90, upregulation of transcription factors for the Toll and IMD pathways and activation of detoxification enzymes. Fungal infection also led to a decrease in microbiota diversity, although the changes in community structure were not significant, except for the enhancement of Serratia. Fungal infection decreased the production of ROS but did not affect the gene expression of the immune pathways. In the combined treatment, fungal infection inhibited the activation of detoxification enzymes and prevented the downregulation of the JAK-STAT pathway caused by avermectins. The results of this study suggest that fungal infection modulates physiological responses to avermectins and that fungal infection may increase avermectin toxicosis by blocking detoxification enzymes in the gut.
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Affiliation(s)
- Vadim Yu Kryukov
- Institute of Systematics and Ecology of Animals, Siberian Branch of Russian Academy of Sciences, Novosibirsk, 630091, Russia. .,Tomsk State University, Tomsk, 634050, Russia.
| | - Ulyana Rotskaya
- Institute of Systematics and Ecology of Animals, Siberian Branch of Russian Academy of Sciences, Novosibirsk, 630091, Russia
| | - Olga Yaroslavtseva
- Institute of Systematics and Ecology of Animals, Siberian Branch of Russian Academy of Sciences, Novosibirsk, 630091, Russia
| | - Olga Polenogova
- Institute of Systematics and Ecology of Animals, Siberian Branch of Russian Academy of Sciences, Novosibirsk, 630091, Russia
| | - Natalia Kryukova
- Institute of Systematics and Ecology of Animals, Siberian Branch of Russian Academy of Sciences, Novosibirsk, 630091, Russia
| | - Yuriy Akhanaev
- Institute of Systematics and Ecology of Animals, Siberian Branch of Russian Academy of Sciences, Novosibirsk, 630091, Russia
| | - Anton Krivopalov
- Institute of Systematics and Ecology of Animals, Siberian Branch of Russian Academy of Sciences, Novosibirsk, 630091, Russia
| | - Tatyana Alikina
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of Russian Academy of Sciences, Novosibirsk, 630090, Russia
| | - Yana L Vorontsova
- Institute of Systematics and Ecology of Animals, Siberian Branch of Russian Academy of Sciences, Novosibirsk, 630091, Russia
| | - Irina Slepneva
- Voevodsky Institute of Chemical Kinetics and Combustion, Siberian Branch of Russian Academy of Sciences, Novosibirsk, 630090, Russia
| | - Marsel Kabilov
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of Russian Academy of Sciences, Novosibirsk, 630090, Russia
| | - Viktor V Glupov
- Institute of Systematics and Ecology of Animals, Siberian Branch of Russian Academy of Sciences, Novosibirsk, 630091, Russia
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Vesković A, Nakarada Đ, Pavićević A, Prokić B, Perović M, Kanazir S, Popović-Bijelić A, Mojović M. In Vivo/Ex Vivo EPR Investigation of the Brain Redox Status and Blood-Brain Barrier Integrity in the 5xFAD Mouse Model of Alzheimer's Disease. Curr Alzheimer Res 2021; 18:25-34. [PMID: 33761860 DOI: 10.2174/1567205018666210324121156] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 12/27/2020] [Accepted: 03/15/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Alzheimer's disease (AD) is the most common neurodegenerative disorder characterized by cognitive decline and total brain atrophy. Despite the substantial scientific effort, the pathological mechanisms underlying neurodegeneration in AD are currently unknown. In most studies, amyloid β peptide has been considered the key pathological change in AD. However, numerous Aβ-targeting treatments have failed in clinical trials. This implies the need to shift the research focus from Aβ to other pathological features of the disease. OBJECTIVE The aim of this study was to examine the interplay between mitochondrial dysfunction, oxidative stress and blood-brain barrier (BBB) disruption in AD pathology, using a novel approach that involves the application of electron paramagnetic resonance (EPR) spectroscopy. METHODS In vivo and ex vivo EPR spectroscopy using two spin probes (aminoxyl radicals) exhibiting different cell-membrane and BBB permeability were employed to assess BBB integrity and brain tissue redox status in the 5xFAD mouse model of AD. In vivo spin probe reduction decay was analyzed using a two-compartment pharmacokinetic model. Furthermore, 15 K EPR spectroscopy was employed to investigate the brain metal content. RESULTS This study has revealed an altered brain redox state, BBB breakdown, as well as ROS-mediated damage to mitochondrial iron-sulfur clusters, and up-regulation of MnSOD in the 5xFAD model. CONCLUSION The EPR spin probes were shown to be excellent in vivo reporters of the 5xFAD neuronal tissue redox state, as well as the BBB integrity, indicating the importance of in vivo EPR spectroscopy application in preclinical studies of neurodegenerative diseases.
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Affiliation(s)
- Ana Vesković
- Faculty of Physical Chemistry, University of Belgrade, Belgrade,Serbia
| | - Đura Nakarada
- Faculty of Physical Chemistry, University of Belgrade, Belgrade,Serbia
| | | | - Bogomir Prokić
- Faculty of Veterinary Medicine, University of Belgrade, Belgrade,Serbia
| | - Milka Perović
- Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade,Serbia
| | - Selma Kanazir
- Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade,Serbia
| | | | - Miloš Mojović
- Faculty of Physical Chemistry, University of Belgrade, Belgrade,Serbia
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Donatienne d'Hose, Danhier P, Northshield H, Isenborghs P, Jordan BF, Gallez B. A versatile EPR toolbox for the simultaneous measurement of oxygen consumption and superoxide production. Redox Biol 2020; 40:101852. [PMID: 33418140 PMCID: PMC7804984 DOI: 10.1016/j.redox.2020.101852] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 12/22/2020] [Accepted: 12/23/2020] [Indexed: 01/30/2023] Open
Abstract
In this paper, we describe an assay to analyze simultaneously the oxygen consumption rate (OCR) and superoxide production in a biological system. The analytical set-up uses electron paramagnetic resonance (EPR) spectroscopy with two different isotopically-labelled sensors: 15N-PDT (4-oxo-2,2,6,6-tetramethylpiperidine-d16-15N-1-oxyl) as oxygen-sensing probe and 14N-CMH (1-hydroxy-3-methoxycarbonyl-2,2,5,5-tetramethylpyrrolidine, a cyclic hydroxylamine, as sensor of reactive oxygen species (ROS). The superoxide contribution to CMH oxidation is assessed using SOD or PEGSOD as controls. Because the EPR spectra are not superimposable, the variation of EPR linewidth of 15N-PDT (linked to OCR) and the formation of the nitroxide from 14N-CMH (linked to superoxide production) can be recorded simultaneously over time on a single preparation. The EPR toolbox was qualified in biological systems of increasing complexity. First, we used an enzymatic assay based on the hypoxanthine (HX)/xanthine oxidase (XO) which is a well described model of oxygen consumption and superoxide production. Second, we used a cellular model of superoxide production using macrophages exposed to phorbol 12-myristate 13-acetate (PMA) which stimulates the NADPH oxidase (NOX) to consume oxygen and produce superoxide. Finally, we exposed isolated mitochondria to established inhibitors of the electron transport chain (rotenone and metformin) in order to assess their impact on OCR and superoxide production. This EPR toolbox has the potential to screen the effect of intoxicants or drugs targeting the mitochondrial function. OCR and superoxide production are crucial to assess mitochondrial (dys)function. The EPR toolbox analyzes simultaneously the OCR and superoxide production. The EPR toolbox was validated in enzymatic system, cells and isolated mitochondria. The EPR toolbox has the potential to screen compounds altering mitochondrial function.
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Affiliation(s)
- Donatienne d'Hose
- Biomedical Magnetic Resonance, Louvain Drug Research Institute (LDRI), Université Catholique de Louvain (UCLouvain), Brussels, Belgium
| | - Pierre Danhier
- Nuclear and Electron Spin Technologies (NEST) Platform, Université Catholique de Louvain (UCLouvain), Brussels, Belgium
| | - Heidi Northshield
- Biomedical Magnetic Resonance, Louvain Drug Research Institute (LDRI), Université Catholique de Louvain (UCLouvain), Brussels, Belgium
| | - Pauline Isenborghs
- Biomedical Magnetic Resonance, Louvain Drug Research Institute (LDRI), Université Catholique de Louvain (UCLouvain), Brussels, Belgium
| | - Bénédicte F Jordan
- Biomedical Magnetic Resonance, Louvain Drug Research Institute (LDRI), Université Catholique de Louvain (UCLouvain), Brussels, Belgium
| | - Bernard Gallez
- Biomedical Magnetic Resonance, Louvain Drug Research Institute (LDRI), Université Catholique de Louvain (UCLouvain), Brussels, Belgium.
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42
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Qi H, Xu G, Peng XL, Li X, Shuai J, Xu R. Roles of four feedback loops in mitochondrial permeability transition pore opening induced by Ca^{2+} and reactive oxygen species. Phys Rev E 2020; 102:062422. [PMID: 33466063 DOI: 10.1103/physreve.102.062422] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 12/04/2020] [Indexed: 11/07/2022]
Abstract
Transient or sustained permeability transition pore (PTP) opening is important in normal physiology or cell death, respectively. These are closely linked to Ca^{2+} and reactive oxygen species (ROS). The entry of Ca^{2+} into mitochondria regulates ROS production, and both Ca^{2+} and ROS trigger PTP opening. In addition to this feedforward loop, there exist four feedback loops in the Ca^{2+}-ROS-PTP system. ROS promotes Ca^{2+} entering (F1) and induces further ROS generation (F2), forming two positive feedback loops. PTP opening results in the efflux of Ca^{2+} (F3) and ROS (F4) from the mitochondria, forming two negative feedback loops. Owing to these complexities, we construct a mathematical model to dissect the roles of these feedback loops in the dynamics of PTP opening. The qualitative agreement between simulation results and recent experimental observations supports our hypothesis that under physiological conditions the PTP opens in an oscillatory state, while under pathological conditions it opens in a high steady state. We clarify that the negative feedback loops are responsible for producing oscillations, wherein F3 plays a more prominent role than F4; whereas the positive feedback loops are beneficial for maintaining oscillation robustness, wherein F1 has a more dominant role than F2. Furthermore, we manifest that the proper increase in negative feedback strength or decrease in positive feedback strength not only facilitates the occurrence of oscillations and thus protects the system against a high steady state, but also assists in lowering the oscillation peak. This study may provide potential therapeutic strategies in treating neurodegenerative diseases due to PTP dysfunction.
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Affiliation(s)
- Hong Qi
- Complex Systems Research Center, Shanxi University, Taiyuan 030006, China
- Shanxi Key Laboratory of Mathematical Techniques and Big Data Analysis on Disease Control and Prevention, Shanxi University, Taiyuan 030006, China
| | - Guoping Xu
- Complex Systems Research Center, Shanxi University, Taiyuan 030006, China
- Shanxi Key Laboratory of Mathematical Techniques and Big Data Analysis on Disease Control and Prevention, Shanxi University, Taiyuan 030006, China
| | - Xiao-Long Peng
- Complex Systems Research Center, Shanxi University, Taiyuan 030006, China
- Shanxi Key Laboratory of Mathematical Techniques and Big Data Analysis on Disease Control and Prevention, Shanxi University, Taiyuan 030006, China
| | - Xiang Li
- Department of Physics, College of Physical Science and Technology, Xiamen University, Xiamen 361005, China
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, Xiamen University, Xiamen 361102, China
| | - Jianwei Shuai
- Department of Physics, College of Physical Science and Technology, Xiamen University, Xiamen 361005, China
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, Xiamen University, Xiamen 361102, China
- National Institute for Data Science in Health and Medicine, Xiamen University, Xiamen 361102, China
| | - Rui Xu
- Complex Systems Research Center, Shanxi University, Taiyuan 030006, China
- Shanxi Key Laboratory of Mathematical Techniques and Big Data Analysis on Disease Control and Prevention, Shanxi University, Taiyuan 030006, China
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43
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Change in Oxidative Stress Biomarkers During 30 Days in Saturation Dive: A Pilot Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17197118. [PMID: 32998440 PMCID: PMC7579105 DOI: 10.3390/ijerph17197118] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 09/19/2020] [Accepted: 09/24/2020] [Indexed: 02/07/2023]
Abstract
Saturation diving allows divers to reduce the risk of decompression sickness while working at depth for prolonged periods but may increase reactive oxygen species (ROS) production. Such modifications can affect endothelial function by exacerbating oxidative stress. This study investigated the effects of saturation diving on oxidative stress damage. Redox status was evaluated through: ROS production; total antioxidant capacity (TAC); nitric oxide metabolites (NOx); nitrotyrosine (3-NT); and lipid peroxidation (8-iso-PGF2α) assessment. Creatinine and neopterin were analyzed as markers of renal function and damage. Measurements were performed on saliva and urine samples obtained at four time points: pre; deep; post; and 24 h post. Four divers were included in the study. After the saturation dive (post), significant (p < 0.05) increases in ROS (0.12 ± 0.03 vs. 0.36 ± 0.06 µmol.min-1), TAC (1.88 ± 0.03 vs. 2.01 ± 0.08 mM), NOx (207.0 ± 103.3 vs. 441.8 ± 97.3 µM), 3-NT (43.32 ± 18.03 vs. 18.64 ± 7.45 nM·L-1), and 8-iso-PGF2α (249.7 ± 45.1 vs. 371.9 ± 54.9 pg·mg-1 creatinine) were detected. Markers of renal damage were increased as well after the end of the saturation dive (creatinine 0.54 ± 0.22 vs. 2.72 ± 1.12 g-L-1; neopterin 73.3 ± 27.9 vs. 174.3 ± 20.53 μmol·mol-1 creatinine). These results could ameliorate commercial or military diving protocols or improve the understanding of symptoms caused by oxygen level elevation.
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44
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Scheinok S, Capeloa T, Porporato PE, Sonveaux P, Gallez B. An EPR Study Using Cyclic Hydroxylamines To Assess The Level of Mitochondrial ROS in Superinvasive Cancer Cells. Cell Biochem Biophys 2020; 78:249-254. [PMID: 32488461 DOI: 10.1007/s12013-020-00921-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Accepted: 05/25/2020] [Indexed: 02/07/2023]
Abstract
It has been proposed that a mitochondrial switch involving a high mitochondrial superoxide production is associated with cancer metastasis. We here report an EPR analysis of ROS production using cyclic hydroxylamines in superinvasive SiHa-F3 compared with less invasive SiHa wild-type human cervix cancer cells. Using the CMH probe, no significant difference was observed in the overall level of ROS between SiHa and SiHa-F3 cells. However, using mitochondria-targeted cyclic hydroxylamine probe mitoTEMPO-H, we detected a significantly higher mitochondrial ROS content in SiHa-F3 compared with the wild-type SiHa cells. To investigate the nature of mitochondrial ROS, we overexpressed superoxide dismutase 2, a SOD isoform exclusively localized in mitochondria, in SiHa-F3 superinvasive cells. A significantly lower signal was detected in SiHa-F3 cells overexpressing SOD2 compared with SiHa-F3. Despite some limitations discussed in the paper, our EPR results suggest that mitochondrial ROS (at least partly superoxide) are produced to a larger extent in superinvasive cancer cells compared with less invasive wild-type cancer cells.
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Affiliation(s)
- Samantha Scheinok
- Biomedical Magnetic Resonance, Louvain Drug Research Institute (LDRI), Université catholique de Louvain (UCLouvain), Brussels, Belgium
| | - Tania Capeloa
- Pole of Pharmacology, Institut de Recherche Expérimentale et Clinique (IREC), Université catholique de Louvain (UCLouvain), Brussels, Belgium
| | - Paolo E Porporato
- Department of Molecular Biotechnology and Health Science, Molecular Biotechnology Center, University of Torino, Torino, Italy
| | - Pierre Sonveaux
- Pole of Pharmacology, Institut de Recherche Expérimentale et Clinique (IREC), Université catholique de Louvain (UCLouvain), Brussels, Belgium
| | - Bernard Gallez
- Biomedical Magnetic Resonance, Louvain Drug Research Institute (LDRI), Université catholique de Louvain (UCLouvain), Brussels, Belgium.
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45
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Robert KA, Sharma R, Henkel R, Agarwal A. An update on the techniques used to measure oxidative stress in seminal plasma. Andrologia 2020; 53:e13726. [PMID: 32814366 DOI: 10.1111/and.13726] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Revised: 05/12/2020] [Accepted: 05/22/2020] [Indexed: 12/15/2022] Open
Abstract
Reactive oxygen species (ROS) are produced in significant amounts by spermatozoa and leucocytes. They are necessary to carry out various physiological functions such as sperm capacitation, hyperactivation, acrosome reaction, sperm-zona binding and cellular signalling pathways. Oxidative stress (OS) results when the ROS levels overwhelm the available antioxidant reserve. A number of direct and indirect tests have been developed to assess oxidative stress. In this manuscript, we discuss these common direct and indirect tests as well as their advantages and disadvantages. Tests measuring sperm dysfunction secondary to oxidative stress such as lipid peroxidation, DNA fragmentation and protein alterations are also described.
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Affiliation(s)
- Kathy A Robert
- American Center for Reproductive Medicine, Cleveland Clinic, Cleveland, OH, USA
| | - Rakesh Sharma
- American Center for Reproductive Medicine, Cleveland Clinic, Cleveland, OH, USA
| | - Ralf Henkel
- Department of Medical Bioscience, University of the Western Cape, Bellville, South Africa
| | - Ashok Agarwal
- American Center for Reproductive Medicine, Cleveland Clinic, Cleveland, OH, USA
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46
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Gotham JP, Li R, Tipple TE, Lancaster JR, Liu T, Li Q. Quantitation of spin probe-detectable oxidants in cells using electron paramagnetic resonance spectroscopy: To probe or to trap? Free Radic Biol Med 2020; 154:84-94. [PMID: 32376456 PMCID: PMC7368495 DOI: 10.1016/j.freeradbiomed.2020.04.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 04/19/2020] [Accepted: 04/22/2020] [Indexed: 12/22/2022]
Abstract
Electron Paramagnetic Resonance (EPR) spectroscopy coupled with spin traps/probes enables quantitative determination of reactive nitrogen and oxygen species (RNOS). Even with numerous studies using spin probes, the methodology has not been rigorously investigated. The autoxidation of spin probes has been commonly overlooked. Using the spin probe 1-hydroxy-3-methoxycarbonyl-2,2,5,5-tetramethylpyrrolidine (CMH), the present study has tested the effects of metal chelators, temperature, and oxygen content on the autoxidation of spin probes, where an optimized condition is refined for cell studies. The apparent rate of CMH autoxidation under this condition is 7.01 ± 1.60 nM/min, indicating low sensitivity and great variation of the CMH method and that CMH autoxidation rate should be subtracted from the generation rate of CMH-detectable oxidants (simplified as oxidants below) in samples. Oxidants in RAW264.7 cells are detected at an initial rate of 4.0 ± 0.7 pmol/min/106 cells, which is not considered as the rate of basal oxidants generation because the same method has failed to detect oxidant generation from the stimulation of phorbol-12-mysirate-13-acetate (PMA, 0.1 nmol/106 cells) in cells (2.5 ± 0.9 for PMA vs. 2.1 ± 1.5 pmol/min/106 cells for dimethyl sulfoxide (DMSO)-treated cells). In contrast, the spin trap 5,5-dimethyl-1-pyrroline-N-oxide (DMPO), which exhibits minimal autoxidation, reveals differences between PMA and DMSO treatment (0.26 ± 0.09 vs. -0.06 ± 0.12 pmol/min/106 cells), which challenges previous claims that spin probes are more sensitive than spin traps. We have also found that low temperature EPR measurements of frozen samples of CMH autoxidation provide lower signal intensity and greater variation compared to RT measurements of fresh samples. The current study establishes an example for method development of RNOS detection, where experimental details are rigorously considered and tested, and raises questions on the applications of spin probes and spin traps.
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Affiliation(s)
- John P Gotham
- Science and Technology Honors College, University of Alabama at Birmingham, Birmingham, AL, 35294, USA; Division of Neonatology, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL, 35294, USA
| | - Rui Li
- Division of Neonatology, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL, 35294, USA
| | - Trent E Tipple
- Division of Neonatology, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL, 35294, USA
| | - Jack R Lancaster
- Department of Pharmacology & Chemical Biology, Medicine, and Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, 15261, USA
| | - Taiming Liu
- Department of Pediatrics, Division of Neonatology, Loma Linda University School of Medicine, Loma Linda, CA, 92354, USA
| | - Qian Li
- Division of Neonatology, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL, 35294, USA.
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Mrakic-Sposta S, Bosco G, Vezzoli A. Commentary on: "Targeted and untargeted metabolomics applied to occupational exposure to hyperbaric atmosphere". Toxicol Lett 2020; 330:71-72. [PMID: 32439579 DOI: 10.1016/j.toxlet.2020.05.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 05/15/2020] [Indexed: 02/06/2023]
Affiliation(s)
- Simona Mrakic-Sposta
- National Research Council - Institute of Clinical Physiology (CNR-IFC), Milano, Italy
| | - Gerardo Bosco
- Department of Biomedical Sciences, University of Padova, Padova, Italy.
| | - Alessandra Vezzoli
- National Research Council - Institute of Clinical Physiology (CNR-IFC), Milano, Italy
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48
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Harris IS, DeNicola GM. The Complex Interplay between Antioxidants and ROS in Cancer. Trends Cell Biol 2020; 30:440-451. [PMID: 32303435 DOI: 10.1016/j.tcb.2020.03.002] [Citation(s) in RCA: 315] [Impact Index Per Article: 78.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 03/10/2020] [Accepted: 03/11/2020] [Indexed: 02/08/2023]
Abstract
Reactive oxygen species (ROS) play important roles in tissue homeostasis, cellular signaling, differentiation, and survival. In this review, we discuss the types ofROS, their impact on cellular processes, and their pro- and antitumorigenic effects. Further, we discuss recent advances in our understanding of both endogenous and exogenous antioxidants in tumorigenic processes. Finally, wediscuss how aberrant activation of antioxidant programs by the transcription factor NFE2-related factor 2 (NRF2) influences tumorigenesis and metastasis, and where the current gaps in our knowledge remain.
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Affiliation(s)
- Isaac S Harris
- Department of Biomedical Genetics and Wilmot Cancer Institute, University of Rochester Medical Center, 601 Elmwood Ave., Rochester, NY 14642, USA.
| | - Gina M DeNicola
- Department of Cancer Physiology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA.
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49
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Nakamura M, Yamasaki T, Ueno M, Shibata S, Ozawa Y, Kamada T, Nakanishi I, Yamada KI, Aoki I, Matsumoto KI. Radiation-induced redox alteration in the mouse brain. Free Radic Biol Med 2019; 143:412-421. [PMID: 31446055 DOI: 10.1016/j.freeradbiomed.2019.08.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 08/20/2019] [Accepted: 08/20/2019] [Indexed: 11/22/2022]
Abstract
Time courses of the redox status in the brains of mice after X-ray or carbon-ion beam irradiation were observed by magnetic resonance redox imaging (MRRI). The relationship between radiation-induced oxidative stress on the cerebral nervous system and the redox status in the brain was discussed. The mice were irradiated by 8-Gy X-ray or carbon-ion beam (C-beam) on their head under anesthesia. C-beam irradiation was performed at HIMAC (Heavy-Ion Medical Accelerator in Chiba, NIRS/QST, Chiba, Japan). MRRI measurements using a blood-brain-barrier-permeable nitroxyl contrast agent, MCP or TEMPOL, were performed using 7-T scanner at several different times, i.e., 5-10 h, 1, 2, 4, and 8 day(s) after irradiation. Decay rates of the nitroxyl-enhanced T1-weighted MR signals in the brains were estimated from MRRI data sets, and variation in the decay rates after irradiation was assessed. The variation in decay rates of MCP and TEMPOL after X-ray or C-beam irradiation was similar, but different variation patterns were observed between X-ray and C-beam. The apparent decay rate of both MCP and TEMPOL decreased due to the temporal reduction of blood flow in the brain several hours after X-ray and/or C-beam irradiation. After decreasing, the apparent decay rates of nitroxyl radicals in the brain gradually increased during the following days after X-ray irradiation or rapidly increased 1 day after C-beam irradiation. The sequential increase in nitroxyl decay rates may have been due to the oxidative atmosphere in the tissue due to ROS generation. X-ray and C-beam irradiation resulted in different redox responses, which may have been due to time-varying oxidative stress/injury, in the mouse brain. The C-beam irradiation effects were more acute and larger than those of X-ray irradiation.
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Affiliation(s)
- Mizuki Nakamura
- Quantitative RedOx Sensing Group, Department of Basic Medical Sciences for Radiation Damages, National Institute of Radiological Sciences, Quantum Medical Science Directorate, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba-shi, Chiba, 263-8555, Japan; Graduate School of Medical and Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba, 260-88670, Japan
| | - Toshihide Yamasaki
- Laboratory of Biophysical Chemistry, Kobe Pharmaceutical University, 4-19-1 Motoyama-kita, Higashinada, Kobe, 658-8558, Japan
| | - Megumi Ueno
- Quantitative RedOx Sensing Group, Department of Basic Medical Sciences for Radiation Damages, National Institute of Radiological Sciences, Quantum Medical Science Directorate, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba-shi, Chiba, 263-8555, Japan
| | - Sayaka Shibata
- Preclinical Research and Development for Functional and Molecular Imaging Group, Department of Molecular Imaging and Theranostics, National Institute of Radiological Sciences, Quantum Medical Science Directorate, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba, 263-8555, Japan
| | - Yoshikazu Ozawa
- Preclinical Research and Development for Functional and Molecular Imaging Group, Department of Molecular Imaging and Theranostics, National Institute of Radiological Sciences, Quantum Medical Science Directorate, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba, 263-8555, Japan
| | - Tadashi Kamada
- Graduate School of Medical and Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba, 260-88670, Japan; Research Center Hospital, Research Center for Charged Particle Therapy, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba, 263-8555, Japan
| | - Ikuo Nakanishi
- Quantitative RedOx Sensing Group, Department of Basic Medical Sciences for Radiation Damages, National Institute of Radiological Sciences, Quantum Medical Science Directorate, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba-shi, Chiba, 263-8555, Japan; Institute for Quantum Life Science (iQLS), National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba, 263-8555, Japan
| | - Ken-Ichi Yamada
- Physical Chemistry for Life Science Laboratory, Faculty of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi Higashi-ku, Fukuoka, 812-8582, Japan; JST, PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan
| | - Ichio Aoki
- Preclinical Research and Development for Functional and Molecular Imaging Group, Department of Molecular Imaging and Theranostics, National Institute of Radiological Sciences, Quantum Medical Science Directorate, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba, 263-8555, Japan; Institute for Quantum Life Science (iQLS), National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba, 263-8555, Japan
| | - Ken-Ichiro Matsumoto
- Quantitative RedOx Sensing Group, Department of Basic Medical Sciences for Radiation Damages, National Institute of Radiological Sciences, Quantum Medical Science Directorate, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba-shi, Chiba, 263-8555, Japan; Institute for Quantum Life Science (iQLS), National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba, 263-8555, Japan.
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Oxidative stress assessment in breath-hold diving. Eur J Appl Physiol 2019; 119:2449-2456. [PMID: 31520216 DOI: 10.1007/s00421-019-04224-4] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 09/03/2019] [Indexed: 01/09/2023]
Abstract
PURPOSE Breath-hold diving results in significant changes in blood gases' levels. Challenging variations in oxygen partial pressures may induce reactive oxygen species (ROS) production that exacerbate oxidative stress and, consequently, affect endothelial function. The aim of this study was to investigate the effects of breath-hold diving on oxidative stress damage, assessing ROS production. Nitric oxide metabolites, inducible nitric oxide synthase (iNOS), aminothiols, and renal function were evaluated too as markers of redox status and renal damage. METHODS ROS production was assessed with electron paramagnetic resonance. Oxidative status values were measured at pre- and post-40 m dive in a deep swimming pool (Y-40) from six divers (mean age 46.6 ± 9.3 years; height 176 ± 4 cm; BMI 25 ± 2.9 kg/m2). RESULTS Significant (p < 0.05) increases at post-dive of ROS production rate (0.158 ± 0.003 vs 0.195 ± 0.006 μmol min-1), lipid peroxidation (8-isoprostane: 375.67 ± 195.62 vs 420.49 ± 232.31 pg mg-1 creatinine), nitrate (27.91 ± 19.71 vs 30.80 ± 20.44 μM), iNOS (31.30 ± 4.52 vs 35.68 ± 6.72 IU mL-1) and neopterin concentration (96.20 ± 40.41 vs 118.76 ± 27.84 μmol mol-1 creatinine) were recorded. Conversely, the antioxidant capacity significantly decreased (3.423 ± 0.089 vs 3.015 ± 0.284 mM) after immersion. CONCLUSION Overproduction of ROS and consequent oxidative damage to lipids of membrane and antioxidant capacity decreasing reflect also a hypoxic condition, which in the breath-hold diving typically occurs in the last few meters below the surface. iNOS produces NO in large quantities under the examined extreme conditions. Neopterin and creatinine concentration level increased, suggesting an "impairment of renal function" as a likely physiological response to PaO2 variations during dive activity.
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