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Ulloa M, Macías F, Clapp C, Martínez de la Escalera G, Arnold E. Prolactin is an Endogenous Antioxidant Factor in Astrocytes That Limits Oxidative Stress-Induced Astrocytic Cell Death via the STAT3/NRF2 Signaling Pathway. Neurochem Res 2024; 49:1879-1901. [PMID: 38755517 PMCID: PMC11144156 DOI: 10.1007/s11064-024-04147-3] [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: 02/05/2024] [Revised: 03/29/2024] [Accepted: 05/02/2024] [Indexed: 05/18/2024]
Abstract
Oxidative stress-induced death of neurons and astrocytes contributes to the pathogenesis of numerous neurodegenerative diseases. While significant progress has been made in identifying neuroprotective molecules against neuronal oxidative damage, little is known about their counterparts for astrocytes. Prolactin (PRL), a hormone known to stimulate astroglial proliferation, viability, and cytokine expression, exhibits antioxidant effects in neurons. However, its role in protecting astrocytes from oxidative stress remains unexplored. Here, we investigated the effect of PRL against hydrogen peroxide (H2O2)-induced oxidative insult in primary cortical astrocyte cultures. Incubation of astrocytes with PRL led to increased enzymatic activity of superoxide dismutase (SOD) and glutathione peroxidase (GPX), resulting in higher total antioxidant capacity. Concomitantly, PRL prevented H2O2-induced cell death, reactive oxygen species accumulation, and protein and lipid oxidation. The protective effect of PRL upon H2O2-induced cell death can be explained by the activation of both signal transducer and activator of transcription 3 (STAT3) and NFE2 like bZIP transcription factor 2 (NRF2) transduction cascades. We demonstrated that PRL induced nuclear translocation and transcriptional upregulation of Nrf2, concurrently with the transcriptional upregulation of the NRF2-dependent genes heme oxygenase 1, Sod1, Sod2, and Gpx1. Pharmacological blockade of STAT3 suppressed PRL-induced transcriptional upregulation of Nrf2, Sod1 and Gpx1 mRNA, and SOD and GPX activities. Furthermore, genetic ablation of the PRL receptor increased astroglial susceptibility to H2O2-induced cell death and superoxide accumulation, while diminishing their intrinsic antioxidant capacity. Overall, these findings unveil PRL as a potent antioxidant hormone that protects astrocytes from oxidative insult, which may contribute to brain neuroprotection.
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Affiliation(s)
- Miriam Ulloa
- Instituto de Neurobiología, Universidad Nacional Autónoma de México, Campus UNAM-Juriquilla, 76230, Querétaro, México
- Posgrado en Ciencias Biológicas, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510, Mexico City, México
| | - Fernando Macías
- Instituto de Neurobiología, Universidad Nacional Autónoma de México, Campus UNAM-Juriquilla, 76230, Querétaro, México
| | - Carmen Clapp
- Instituto de Neurobiología, Universidad Nacional Autónoma de México, Campus UNAM-Juriquilla, 76230, Querétaro, México
| | | | - Edith Arnold
- Instituto de Neurobiología, Universidad Nacional Autónoma de México, Campus UNAM-Juriquilla, 76230, Querétaro, México.
- CONAHCYT-Universidad Nacional Autónoma de México, Campus UNAM-Juriquilla, Querétaro, México.
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2
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Andrés CMC, Pérez de la Lastra JM, Juan CA, Plou FJ, Pérez-Lebeña E. Antioxidant Metabolism Pathways in Vitamins, Polyphenols, and Selenium: Parallels and Divergences. Int J Mol Sci 2024; 25:2600. [PMID: 38473850 DOI: 10.3390/ijms25052600] [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: 11/26/2023] [Revised: 02/19/2024] [Accepted: 02/21/2024] [Indexed: 03/14/2024] Open
Abstract
Free radicals (FRs) are unstable molecules that cause reactive stress (RS), an imbalance between reactive oxygen and nitrogen species in the body and its ability to neutralize them. These species are generated by both internal and external factors and can damage cellular lipids, proteins, and DNA. Antioxidants prevent or slow down the oxidation process by interrupting the transfer of electrons between substances and reactive agents. This is particularly important at the cellular level because oxidation reactions lead to the formation of FR and contribute to various diseases. As we age, RS accumulates and leads to organ dysfunction and age-related disorders. Polyphenols; vitamins A, C, and E; and selenoproteins possess antioxidant properties and may have a role in preventing and treating certain human diseases associated with RS. In this review, we explore the current evidence on the potential benefits of dietary supplementation and investigate the intricate connection between SIRT1, a crucial regulator of aging and longevity; the transcription factor NRF2; and polyphenols, vitamins, and selenium. Finally, we discuss the positive effects of antioxidant molecules, such as reducing RS, and their potential in slowing down several diseases.
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Affiliation(s)
| | - José Manuel Pérez de la Lastra
- Institute of Natural Products and Agrobiology, CSIC-Spanish Research Council, Avda. Astrofísico Fco. Sánchez, 3, 38206 La Laguna, Spain
| | - Celia Andrés Juan
- Cinquima Institute and Department of Organic Chemistry, Faculty of Sciences, Valladolid University, Paseo de Belén, 7, 47011 Valladolid, Spain
| | - Francisco J Plou
- Institute of Catalysis and Petrochemistry, CSIC-Spanish Research Council, 28049 Madrid, Spain
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3
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Kanner J. Food Polyphenols as Preventive Medicine. Antioxidants (Basel) 2023; 12:2103. [PMID: 38136222 PMCID: PMC10740609 DOI: 10.3390/antiox12122103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 12/04/2023] [Accepted: 12/04/2023] [Indexed: 12/24/2023] Open
Abstract
Reactive oxygen species (ROS) are the initiators in foods and in the stomach of oxidized dietary lipids, proteins, and lipid-oxidation end-products (ALEs), inducing in humans the development of several chronic diseases and cancer. Epidemiological, human clinical and animal studies supported the role of dietary polyphenols and derivatives in prevention of development of such chronic diseases. There is much evidence that polyphenols/derivatives at the right timing and concentration, which is critical, acts mostly in the aerobic stomach and generally in the gastrointestinal tract as reducing agents, scavengers of free radicals, trappers of reactive carbonyls, modulators of enzyme activity, generators of beneficial gut microbiota and effectors of cellular signaling. In the blood system, at low concentration, they act as generators of electrophiles and low concentration of H2O2, acting mostly as cellular signaling, activating the PI3K/Akt-mediated Nrf2/eNOS pathways and inhibiting the inflammatory transcription factor NF-κB, inducing the cells, organs and organism for eustress, adaptation and surviving.
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Affiliation(s)
- Joseph Kanner
- Department of Food Science, ARO, Volcani Center, Bet-Dagan 7505101, Israel; or
- Institute of Biochemistry, Food Science and Nutrtion, Faculty of Agriculture Food and Environment, The Hebrew University of Jerusalem, Rehovot 9190501, Israel
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4
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Mu K, Kitts DD. Intestinal polyphenol antioxidant activity involves redox signaling mechanisms facilitated by aquaporin activity. Redox Biol 2023; 68:102948. [PMID: 37922763 PMCID: PMC10643476 DOI: 10.1016/j.redox.2023.102948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 10/26/2023] [Indexed: 11/07/2023] Open
Abstract
Ascertaining whether dietary polyphenols evoke an antioxidant or prooxidant activity, which translates to a functional role required to maintain intestinal cell homeostasis continues to be an active and controversial area of research for food chemists and biochemists alike. We have proposed that the paradoxical function of polyphenols to autoxidize to generate H2O2 is a required first step in the capacity of some plant phenolics to function as intracellular antioxidants. This is based on the fact that cell redox homeostasis is achieved by a balance between H2O2 formation and subsequent outcomes of antioxidant systems function. Maintaining optimal extracellular and intracellular H2O2 concentrations is required for cell survival, since low levels are important to upregulate endogenous antioxidant capacity; whereas, concentrations that go beyond homeostatic control typically result in an inflammatory response, growth arrest, or eventual cell death. Aquaporins (AQPs) are a family of water channel membrane proteins that facilitate cellular transportation of water and other small molecule-derived solutes, such as H2O2, in all organisms. In the intestine, AQPs act as gatekeepers to regulate intracellular uptake of H2O2, generated from extracellular polyphenol autoxidation, thus enabling an intracellular cell signaling responses to mitigate onset of oxidative stress and intestinal inflammation. In this review, we highlight the potential role of AQPs to control important underlying mechanisms that define downstream regulation of intestinal redox homeostasis, specifically. It has been established that polyphenols that undergo oxidation to the quinone form, resulting in subsequent adduction to a thiol group on Keap1-Nrf2 complex, trigger Nrf2 activation and a cascade of indirect intracellular antioxidant effects. Here, we propose a similar mechanism that involves H2O2 generated from specific dietary polyphenols with a predisposition to undergo autoxidation. The ultimate bioactivity is regulated and expressed by AQP membrane function and thus, by extension, represents expression of an intracellular antioxidant chemoprotection mechanism.
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Affiliation(s)
- Kaiwen Mu
- Food Science, Food Nutrition and Health Program. Faculty of Land and Food System, The University of British Columbia, 2205 East Mall, Vancouver, B.C, V6T 1Z4, Canada
| | - David D Kitts
- Food Science, Food Nutrition and Health Program. Faculty of Land and Food System, The University of British Columbia, 2205 East Mall, Vancouver, B.C, V6T 1Z4, Canada.
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5
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Sahoo DK, Heilmann RM, Paital B, Patel A, Yadav VK, Wong D, Jergens AE. Oxidative stress, hormones, and effects of natural antioxidants on intestinal inflammation in inflammatory bowel disease. Front Endocrinol (Lausanne) 2023; 14:1217165. [PMID: 37701897 PMCID: PMC10493311 DOI: 10.3389/fendo.2023.1217165] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 08/07/2023] [Indexed: 09/14/2023] Open
Abstract
Inflammatory bowel disease (IBD) is a chronic, relapsing gastrointestinal (GI) disorder characterized by intestinal inflammation. The etiology of IBD is multifactorial and results from a complex interplay between mucosal immunity, environmental factors, and host genetics. Future therapeutics for GI disorders, including IBD, that are driven by oxidative stress require a greater understanding of the cellular and molecular mechanisms mediated by reactive oxygen species (ROS). In the GI tract, oxidative stressors include infections and pro-inflammatory responses, which boost ROS generation by promoting the production of pro-inflammatory cytokines. Nuclear factor kappa B (NF-κB) and nuclear factor erythroid 2-related factor 2 (Nrf2) represent two important signaling pathways in intestinal immune cells that regulate numerous physiological processes, including anti-inflammatory and antioxidant activities. Natural antioxidant compounds exhibit ROS scavenging and increase antioxidant defense capacity to inhibit pro-oxidative enzymes, which may be useful in IBD treatment. In this review, we discuss various polyphenolic substances (such as resveratrol, curcumin, quercetin, green tea flavonoids, caffeic acid phenethyl ester, luteolin, xanthohumol, genistein, alpinetin, proanthocyanidins, anthocyanins, silymarin), phenolic compounds including thymol, alkaloids such as berberine, storage polysaccharides such as tamarind xyloglucan, and other phytochemicals represented by isothiocyanate sulforaphane and food/spices (such as ginger, flaxseed oil), as well as antioxidant hormones like melatonin that target cellular signaling pathways to reduce intestinal inflammation occurring with IBD.
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Affiliation(s)
- Dipak Kumar Sahoo
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
| | - Romy M. Heilmann
- Department for Small Animals, Veterinary Teaching Hospital, College of Veterinary Medicine, University of Leipzig, Leipzig, SN, Germany
| | - Biswaranjan Paital
- Redox Regulation Laboratory, Department of Zoology, College of Basic Science and Humanities, Odisha University of Agriculture and Technology, Bhubaneswar, India
| | - Ashish Patel
- Department of Life Sciences, Hemchandracharya North Gujarat University, Patan, Gujarat, India
| | - Virendra Kumar Yadav
- Department of Life Sciences, Hemchandracharya North Gujarat University, Patan, Gujarat, India
| | - David Wong
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
| | - Albert E. Jergens
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
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6
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Tambe MA, de Rus Jacquet A, Strathearn KE, Hensel JA, Colón BD, Chandran A, Yousef GG, Grace MH, Ferruzzi MG, Wu Q, Simon JE, Lila MA, Rochet JC. Protective Effects of Polyphenol-Rich Extracts against Neurotoxicity Elicited by Paraquat or Rotenone in Cellular Models of Parkinson's Disease. Antioxidants (Basel) 2023; 12:1463. [PMID: 37508001 PMCID: PMC10376534 DOI: 10.3390/antiox12071463] [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: 04/25/2023] [Revised: 06/16/2023] [Accepted: 06/20/2023] [Indexed: 07/30/2023] Open
Abstract
Parkinson's disease (PD) is a neurodegenerative disorder involving motor symptoms caused by a loss of dopaminergic neurons in the substantia nigra region of the brain. Epidemiological evidence suggests that anthocyanin (ANC) intake is associated with a low risk of PD. Previously, we reported that extracts enriched with ANC and proanthocyanidins (PAC) suppressed dopaminergic neuron death elicited by the PD-related toxin rotenone in a primary midbrain culture model. Here, we characterized botanical extracts enriched with a mixed profile of polyphenols, as well as a set of purified polyphenolic standards, in terms of their ability to mitigate dopaminergic cell death in midbrain cultures exposed to another PD-related toxicant, paraquat (PQ), and we examined underlying neuroprotective mechanisms. Extracts prepared from blueberries, black currants, grape seeds, grape skin, mulberries, and plums, as well as several ANC, were found to rescue dopaminergic neuron loss in PQ-treated cultures. Comparison of a subset of ANC-rich extracts for the ability to mitigate neurotoxicity elicited by PQ versus rotenone revealed that a hibiscus or plum extract was only neuroprotective in cultures exposed to rotenone or PQ, respectively. Several extracts or compounds with the ability to protect against PQ neurotoxicity increased the activity of the antioxidant transcription factor Nrf2 in cultured astrocytes, and PQ-induced dopaminergic cell death was attenuated in Nrf2-expressing midbrain cultures. In other studies, we found that extracts prepared from hibiscus, grape skin, or purple basil (but not plums) rescued defects in O2 consumption in neuronal cells treated with rotenone. Collectively, these findings suggest that extracts enriched with certain combinations of ANC, PAC, stilbenes, and other polyphenols could potentially slow neurodegeneration in the brains of individuals exposed to PQ or rotenone by activating cellular antioxidant mechanisms and/or alleviating mitochondrial dysfunction.
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Affiliation(s)
- Mitali A Tambe
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, 207 S. Martin Jischke Dr., West Lafayette, IN 47907, USA
| | - Aurélie de Rus Jacquet
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, 207 S. Martin Jischke Dr., West Lafayette, IN 47907, USA
| | - Katherine E Strathearn
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, 207 S. Martin Jischke Dr., West Lafayette, IN 47907, USA
| | - Jennifer A Hensel
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, 207 S. Martin Jischke Dr., West Lafayette, IN 47907, USA
- Purdue Institute for Integrative Neuroscience, Purdue University, West Lafayette, IN 47907, USA
| | - Bryce D Colón
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, 207 S. Martin Jischke Dr., West Lafayette, IN 47907, USA
- Purdue Institute for Integrative Neuroscience, Purdue University, West Lafayette, IN 47907, USA
| | - Aswathy Chandran
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, 207 S. Martin Jischke Dr., West Lafayette, IN 47907, USA
- Purdue Institute for Integrative Neuroscience, Purdue University, West Lafayette, IN 47907, USA
| | - Gad G Yousef
- Department of Food Bioprocessing and Nutrition Sciences, Plants for Human Health Institute, North Carolina State University, Kannapolis, NC 28081, USA
| | - Mary H Grace
- Department of Food Bioprocessing and Nutrition Sciences, Plants for Human Health Institute, North Carolina State University, Kannapolis, NC 28081, USA
| | - Mario G Ferruzzi
- Arkansas Children's Nutrition Center, Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Qingli Wu
- Department of Plant Biology, Rutgers University, New Brunswick, NJ 08901, USA
| | - James E Simon
- Department of Plant Biology, Rutgers University, New Brunswick, NJ 08901, USA
| | - Mary Ann Lila
- Department of Food Bioprocessing and Nutrition Sciences, Plants for Human Health Institute, North Carolina State University, Kannapolis, NC 28081, USA
| | - Jean-Christophe Rochet
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, 207 S. Martin Jischke Dr., West Lafayette, IN 47907, USA
- Purdue Institute for Integrative Neuroscience, Purdue University, West Lafayette, IN 47907, USA
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7
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Giordano ME, Lionetto MG. Intracellular Redox Behavior of Quercetin and Resveratrol Singly and in Mixtures. Molecules 2023; 28:4682. [PMID: 37375237 DOI: 10.3390/molecules28124682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 06/02/2023] [Accepted: 06/05/2023] [Indexed: 06/29/2023] Open
Abstract
Polyphenols have attracted great interest as potent antioxidant compounds and nutraceuticals; however, their antioxidant properties represent a multifaceted phenomenon, including pro-oxidant effects under particular conditions and complex behavior when multiple polyphenols are simultaneously present. Moreover, their intracellular behavior cannot always be predicted from their ability to counteract the production of ROS in acellular assays. The present work aimed to study the direct intracellular redox activity of two polyphenols, resveratrol and quercetin, singly and in mixture in a cellular short-term bioassay under both basal and pro-oxidant conditions. The study was carried out by spectrofluorimetric assessment of the intracellular fluorescence of CM-H2DCFDA-charged HeLa cells under either basal conditions, due to the reactive species associated with the normal cellular oxidative metabolism, or pro-oxidant conditions induced by H2O2 exposure. Under basal conditions, the obtained results showed a significant antioxidant effect of quercetin and a weaker antioxidant effect of resveratrol when used singly, while antagonism of their effect was detected in their equimolar mixtures at all the concentrations used. Under exposure of the cells to H2O2, quercetin exhibited a dose-dependent intracellular antioxidant activity whereas resveratrol manifested a pro-oxidant intracellular activity, while their equimolar mixtures showed an intracellular interaction between the 2 polyphenols, with additive effects at 5 µM and synergic at 25 µM and 50 µM. Thus, the results clarified the direct intracellular antioxidant/pro-oxidant activity of quercetin and resveratrol alone and in their equimolar mixtures in the cell model HeLa cells and highlighted that the antioxidant properties of polyphenols in mixtures at the cellular level depend not only on the nature of the compounds themselves but also on the type of interactions in the cellular system, which in turn are influenced by the concentration and the oxidative status of the cell.
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Affiliation(s)
- Maria Elena Giordano
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, 73100 Lecce, Italy
| | - Maria Giulia Lionetto
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, 73100 Lecce, Italy
- NBFC, National Biodiversity Future Center, 90133 Palermo, Italy
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8
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Tyuryaeva I, Lyublinskaya O. Expected and Unexpected Effects of Pharmacological Antioxidants. Int J Mol Sci 2023; 24:ijms24119303. [PMID: 37298254 DOI: 10.3390/ijms24119303] [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: 03/20/2023] [Revised: 05/06/2023] [Accepted: 05/23/2023] [Indexed: 06/12/2023] Open
Abstract
In this review, we have collected the existing data on the bioactivity of antioxidants (N-acetylcysteine, polyphenols, vitamin C) which are traditionally used in experimental biology and, in some cases, in the clinic. Presented data show that, despite the capacity of these substances to scavenge peroxides and free radicals in cell-free systems, their ability to exhibit these properties in vivo, upon pharmacological supplementation, has not been confirmed so far. Their cytoprotective activity is explained mainly by the ability not to suppress, but to activate multiple redox pathways, which causes biphasic hormetic responses and highly pleiotropic effects in cells. N-acetylcysteine, polyphenols, and vitamin C affect redox homeostasis by generating low-molecular-weight redox-active compounds (H2O2 or H2S), known for their ability to stimulate cellular endogenous antioxidant defense and promote cytoprotection at low concentrations but exert deleterious effects at high concentrations. Moreover, the activity of antioxidants strongly depends on the biological context and mode of their application. We show here that considering the biphasic and context-dependent response of cells on the pleiotropic action of antioxidants can help explain many of the conflicting results obtained in basic and applied research and build a more logical strategy for their use.
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Affiliation(s)
- Irina Tyuryaeva
- Department of Intracellular Signaling and Transport, Institute of Cytology of the Russian Academy of Sciences, Tikhoretskii pr. 4, 194064 St. Petersburg, Russia
| | - Olga Lyublinskaya
- Department of Intracellular Signaling and Transport, Institute of Cytology of the Russian Academy of Sciences, Tikhoretskii pr. 4, 194064 St. Petersburg, Russia
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9
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Mu K, Yao Y, Wang D, Kitts DD. Prooxidant capacity of phenolic acids defines antioxidant potential. Biochim Biophys Acta Gen Subj 2023; 1867:130371. [PMID: 37121280 DOI: 10.1016/j.bbagen.2023.130371] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 04/20/2023] [Accepted: 04/25/2023] [Indexed: 05/02/2023]
Abstract
Phenolic acids derived from vegetables, fruits and beverages are considered abundant sources of natural antioxidants consumed in the human diet. In addition to having well-known antioxidant activity, phenolic acids also exhibit pro-oxidant activity under selected conditions. We hypothesized that the availability of extracellular H2O2 derived from phenolic acid autoxidation will diffuse across cell membranes to participate as a messenger molecule to activate intracellular redox signaling in response to oxidative stress. We report on the relative activity of structurally different phenolic acids to generate specific changes in the extracellular - intracellular H2O2 flux that induces intracellular redox signaling corresponding to a function to reduce intracellular oxidative stress. HyPer-3 methodology was used to measure increases in intracellular H2O2 in differentiated Caco-2 intestinal cells in response to phenolic acid autoxidation and changes in extracellular H2O2 production. The potential for different phenolic acids to autoxidize and generate H2O2 was dependent on the structure and concentration of phenolic acid. Activation of nuclear factor erythroid 2-related factor (Nrf2) cell signaling was enhanced (p < 0.05) by phenolic acid induced H2O2 production, and mitigated when present along with catalase (p < 0.05), or, alternatively by blocking AQP3 function (p < 0.05) using DFP00173 as the AQP3 inhibitor. The relative capacity of phenolic acids to generate H2O2 on autoxidation was structure specific and corresponded to the level of Nrf2 cell signaling in differentiated Caco-2 epithelial cells. The Nrf2-Keap1 response paralleled the extent of reduced oxidative stress observed in differentiated Caco-2 cells determined by DCFH-DA.
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Affiliation(s)
- Kaiwen Mu
- Food Science, Food Nutrition and Health Program, Faculty of Land and Food Systems, The University of British Columbia, 2205 East Mall, Vancouver, BC V6T 1Z4, Canada
| | - Yufeng Yao
- Laboratory of Bacterial Pathogenesis, Department of Microbiology and Immunology, Institutes of Medical Sciences, Shanghai Jiao Tong University School of Medicine, Shanghai, China; Department of Infectious Diseases, Shanghai Ruijin Hospital, Shanghai, China; Shanghai Key Laboratory of Emergency Prevention, Diagnosis and Treatment of Respiratory Infectious Diseases, Shanghai, China
| | - Danni Wang
- Laboratory of Bacterial Pathogenesis, Department of Microbiology and Immunology, Institutes of Medical Sciences, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - David D Kitts
- Food Science, Food Nutrition and Health Program, Faculty of Land and Food Systems, The University of British Columbia, 2205 East Mall, Vancouver, BC V6T 1Z4, Canada.
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10
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Tambe MA, de Rus Jacquet A, Strathearn KE, Yousef GG, Grace MH, Ferruzzi MG, Wu Q, Simon JE, Lila MA, Rochet JC. Protective effects of polyphenol-rich extracts against neurotoxicity elicited by paraquat or rotenone in cellular models of Parkinson's disease. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.04.26.538474. [PMID: 37163110 PMCID: PMC10168339 DOI: 10.1101/2023.04.26.538474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Parkinson's disease (PD) is a neurodegenerative disorder involving motor symptoms caused by a loss of dopaminergic neurons in the substantia nigra region of the brain. Epidemiological evidence suggests that anthocyanin (ANC) intake is associated with a low risk of PD. Previously, we reported that extracts enriched with ANC and proanthocyanidins (PAC) suppressed dopaminergic neuron death elicited by the PD-related toxin rotenone in a primary midbrain culture model. Here, we characterized botanical extracts enriched with a mixed profile of polyphenols, as well as a set of purified polyphenolic standards, in terms of their ability to mitigate dopaminergic cell death in midbrain cultures exposed to another PD-related toxicant, paraquat (PQ), and we examined underlying neuroprotective mechanisms. Extracts prepared from blueberries, black currants, grape seeds, grape skin, mulberries, and plums, as well as several ANC, were found to rescue dopaminergic neuron loss in PQ-treated cultures. Comparison of a subset of ANC-rich extracts for the ability to mitigate neurotoxicity elicited by PQ versus rotenone revealed that a hibiscus or plum extract was only neuroprotective in cultures exposed to rotenone or PQ, respectively. Several extracts or compounds with the ability to protect against PQ neurotoxicity increased the activity of the antioxidant transcription factor Nrf2 in cultured astrocytes, and PQ-induced dopaminergic cell death was attenuated in Nrf2-expressing midbrain cultures. In other studies, we found that extracts prepared from hibiscus, grape skin, or purple basil (but not plums) rescued defects in O 2 consumption in neuronal cells treated with rotenone. Collectively, these findings suggest that extracts enriched with certain combinations of ANC, PAC, stilbenes, and other polyphenols could potentially slow neurodegeneration in the brains of individuals exposed to PQ or rotenone by activating cellular antioxidant mechanisms and/or alleviating mitochondrial dysfunction.
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11
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Pistol GC, Marin DE, Bulgaru VC, Anghel AC, Sărăcilă M, Vlassa M, Filip M, Taranu I. Grape seed meal by-product is able to counteract oxidative stress induced by lipopolysaccharide and dextran sulphate in IPEC cells and piglets after weaning. PLoS One 2023; 18:e0283607. [PMID: 37053301 PMCID: PMC10101422 DOI: 10.1371/journal.pone.0283607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 03/13/2023] [Indexed: 04/15/2023] Open
Abstract
Oxidative stress is a pivotal factor in the pathogenesis of intestinal inflammation, leading to cellular damage and tissue injury. Natural antioxidants compounds found in agro-industrial by-products have proven their effectiveness in treatment of intestinal inflammation and oxidative stress, exhibiting many favourable effects. The aim of this study was to evaluate the capacity of a grape seed meal byproduct (GSM) to counteract the effects induced by E. coli lipopolysaccharide (LPS, 5μg/ml) in vitro on IPEC-1 cells and by dextran sulphate sodium (DSS, 1g/b.w./day) in vivo on piglets after weaning. Reactive oxygen species (ROS), pro-oxidant markers (malondialdehyde MDA, thiobarbituric acid reactive substances TBARS, protein carbonyl, DNA oxidative damage) antioxidant enzymes (catalase -CAT, superoxide dismutase -SOD, glutathione peroxidase -GPx, endothelial and inducible nitric oxide synthases -eNOS and iNOS) and several important components of Keap1/Nrf2 signalling pathway were analysed in IPEC-1 cells as well as in piglet's colon and lymph nodes. Our results demonstrated that GSM extract or 8% dietary GSM showed anti-oxidant properties counteracting the pro-oxidant response (ROS, MDA-TBARS, protein carbonyl, DNA/RNA damage) induced by LPS or DSS and restoring the levels of endogenous antioxidant enzymes, including CAT, SOD, GPx, eNOS and iNOS in colon and mesenteric lymph nodes. These beneficial effects were modulated via Nrf2 signalling pathway in both in vitro and in vivo studies.
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Affiliation(s)
- Gina Cecilia Pistol
- Laboratory of Animal Biology, INCDBNA-IBNA, National Research-Development Institute for Animal Biology and Nutrition, Balotesti, Romania
| | - Daniela Eliza Marin
- Laboratory of Animal Biology, INCDBNA-IBNA, National Research-Development Institute for Animal Biology and Nutrition, Balotesti, Romania
| | - Valeria Cristina Bulgaru
- Laboratory of Animal Biology, INCDBNA-IBNA, National Research-Development Institute for Animal Biology and Nutrition, Balotesti, Romania
| | - Andrei Cristian Anghel
- Laboratory of Animal Biology, INCDBNA-IBNA, National Research-Development Institute for Animal Biology and Nutrition, Balotesti, Romania
| | - Mihaela Sărăcilă
- Laboratory of Feed and Food Quality, INCDBNA-IBNA, National Research-Development Institute for Animal Biology and Nutrition, Balotesti, Romania
| | - Mihaela Vlassa
- Raluca Ripan Institute for Research in Chemistry, Babeș-Bolyai University, Cluj-Napoca, Romania
| | - Miuta Filip
- Raluca Ripan Institute for Research in Chemistry, Babeș-Bolyai University, Cluj-Napoca, Romania
| | - Ionelia Taranu
- Laboratory of Animal Biology, INCDBNA-IBNA, National Research-Development Institute for Animal Biology and Nutrition, Balotesti, Romania
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12
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Calderaro A, Patanè GT, Tellone E, Barreca D, Ficarra S, Misiti F, Laganà G. The Neuroprotective Potentiality of Flavonoids on Alzheimer's Disease. Int J Mol Sci 2022; 23:ijms232314835. [PMID: 36499159 PMCID: PMC9736131 DOI: 10.3390/ijms232314835] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/19/2022] [Accepted: 11/24/2022] [Indexed: 12/05/2022] Open
Abstract
Alzheimer's disease (AD), due to its spread, has become a global health priority, and is characterized by senile dementia and progressive disability. The main cause of AD and other neurodegenerations (Huntington, Parkinson, Amyotrophic Lateral Sclerosis) are aggregated protein accumulation and oxidative damage. Recent research on secondary metabolites of plants such as polyphenols demonstrated that they may slow the progression of AD. The flavonoids' mechanism of action in AD involved the inhibition of acetylcholinesterase, butyrylcholinesterase, Tau protein aggregation, β-secretase, oxidative stress, inflammation, and apoptosis through modulation of signaling pathways which are implicated in cognitive and neuroprotective functions, such as ERK, PI3-kinase/Akt, NFKB, MAPKs, and endogenous antioxidant enzymatic systems. This review focuses on flavonoids and their role in AD, in terms of therapeutic potentiality for human health, antioxidant potential, and specific AD molecular targets.
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Affiliation(s)
- Antonella Calderaro
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d’Alcontres 31, 98166 Messina, Italy
| | - Giuseppe Tancredi Patanè
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d’Alcontres 31, 98166 Messina, Italy
| | - Ester Tellone
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d’Alcontres 31, 98166 Messina, Italy
- Correspondence: (E.T.); (D.B.)
| | - Davide Barreca
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d’Alcontres 31, 98166 Messina, Italy
- Correspondence: (E.T.); (D.B.)
| | - Silvana Ficarra
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d’Alcontres 31, 98166 Messina, Italy
| | - Francesco Misiti
- Department of Human Sciences, Society and Health, University of Cassino and Southern Lazio, V. S. Angelo, Loc. Folcara, 3043 Cassino, Italy
| | - Giuseppina Laganà
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d’Alcontres 31, 98166 Messina, Italy
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13
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Harju N. Regulation of oxidative stress and inflammatory responses in human retinal pigment epithelial cells. Acta Ophthalmol 2022; 100 Suppl 273:3-59. [DOI: 10.1111/aos.15275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Niina Harju
- School of Pharmacy University of Eastern Finland Kuopio Finland
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14
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Eugenol Attenuates Transmissible Gastroenteritis Virus-Induced Oxidative Stress and Apoptosis Via ROS-NRF2-ARE Signaling. Antioxidants (Basel) 2022; 11:antiox11091838. [PMID: 36139913 PMCID: PMC9495523 DOI: 10.3390/antiox11091838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 09/09/2022] [Accepted: 09/13/2022] [Indexed: 11/30/2022] Open
Abstract
Transmissible gastroenteritis virus (TGEV), a coronavirus that causes severe diarrhea due to oxidative stress in the piglet intestine, is a major cause of economic loss in the livestock industry. However, limited interventions have been shown to be effective in the treatment of TGEV. Here, we demonstrate the therapeutic activity of eugenol in TGEV-induced intestinal oxidative stress and apoptosis. Our data show that eugenol supplementation protects intestine and IPEC-J2 cells from TGEV-induced damage. Mechanistically, eugenol reduces TGEV-induced oxidative stress in intestinal epithelial cells by reducing reactive oxygen species levels. Interestingly, eugenol also inhibits TGEV-induced intestinal cell apoptosis in vitro and in vivo. In conclusion, our data suggest that eugenol prevents TGEV-induced intestinal oxidative stress by reducing ROS-mediated damage to antioxidant signaling pathways. Therefore, eugenol may be a promising therapeutic strategy for TGEV infection.
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15
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Sufianova G, Gareev I, Beylerli O, Wu J, Shumadalova A, Sufianov A, Chen X, Zhao S. Modern aspects of the use of natural polyphenols in tumor prevention and therapy. Front Cell Dev Biol 2022; 10:1011435. [PMID: 36172282 PMCID: PMC9512088 DOI: 10.3389/fcell.2022.1011435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 08/26/2022] [Indexed: 11/13/2022] Open
Abstract
Polyphenols are secondary plant metabolites or organic compounds synthesized by them. In other words, these are molecules that are found in plants. Due to the wide variety of polyphenols and the plants in which they are found, these compounds are divided according to the source of origin, the function of the polyphenols, and their chemical structure; where the main ones are flavonoids. All the beneficial properties of polyphenols have not yet been studied, since this group of substances is very extensive and diverse. However, most polyphenols are known to be powerful antioxidants and have anti-inflammatory effects. Polyphenols help fight cell damage caused by free radicals and immune system components. In particular, polyphenols are credited with a preventive effect that helps protect the body from certain forms of cancer. The onset and progression of tumors may be related directly to oxidative stress, or inflammation. These processes can increase the amount of DNA damage and lead to loss of control over cell division. A number of studies have shown that oxidative stress uncontrolled by antioxidants or an uncontrolled and prolonged inflammatory process increases the risk of developing sarcoma, melanoma, and breast, lung, liver, and prostate cancer. Therefore, a more in-depth study of the effect of polyphenolic compounds on certain signaling pathways that determine the complex cascade of oncogenesis is a promising direction in the search for new methods for the prevention and treatment of tumors.
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Affiliation(s)
- Galina Sufianova
- Department of Pharmacology, Tyumen State Medical University, Tyumen, Russia
| | - Ilgiz Gareev
- Educational and Scientific Institute of Neurosurgery, Peoples’ Friendship University of Russia (RUDN University), Moscow, Russia
| | - Ozal Beylerli
- Educational and Scientific Institute of Neurosurgery, Peoples’ Friendship University of Russia (RUDN University), Moscow, Russia
| | - Jianing Wu
- Department of Neurosurgery, Shenzhen University General Hospital, Shenzhen, China
| | - Alina Shumadalova
- Department of General Chemistry, Bashkir State Medical University, Ufa, Russia
| | - Albert Sufianov
- Educational and Scientific Institute of Neurosurgery, Peoples’ Friendship University of Russia (RUDN University), Moscow, Russia
- Department of Neurosurgery, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
- *Correspondence: Albert Sufianov, ; Xin Chen, ; Shiguang Zhao,
| | - Xin Chen
- Department of Neurosurgical Laboratory, The First Affiliated Hospital of Harbin Medical University, Harbin, China
- *Correspondence: Albert Sufianov, ; Xin Chen, ; Shiguang Zhao,
| | - Shiguang Zhao
- Department of Neurosurgery, Shenzhen University General Hospital, Shenzhen, China
- Department of Neurosurgical Laboratory, The First Affiliated Hospital of Harbin Medical University, Harbin, China
- *Correspondence: Albert Sufianov, ; Xin Chen, ; Shiguang Zhao,
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16
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Guo B, Chou F, Huang L, Yin F, Fang J, Wang JB, Jia Z. Recent insights into oxidative metabolism of quercetin: catabolic profiles, degradation pathways, catalyzing metalloenzymes and molecular mechanisms. Crit Rev Food Sci Nutr 2022; 64:1312-1339. [PMID: 36037033 DOI: 10.1080/10408398.2022.2115456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Quercetin is the most abundant polyphenolic flavonoid (flavonol subclass) in vegetal foods and medicinal plants. This dietary chemopreventive agent has drawn significant interest for its multiple beneficial health effects ("polypharmacology") largely associated with the well-documented antioxidant properties. However, controversies exist in the literature due to its dual anti-/pro-oxidant character, poor stability/bioavailability but multifaceted bioactivities, leaving much confusion as to its exact roles in vivo. Increasing evidence indicates that a prior oxidation of quercetin to generate an array of chemical diverse products with redox-active/electrophilic moieties is emerging as a new linkage to its versatile actions. The present review aims to provide a comprehensive overview of the oxidative conversion of quercetin by systematically analyzing the current quercetin-related knowledge, with a particular focus on the complete spectrum of metabolite products, the enzymes involved in the catabolism and the underlying molecular mechanisms. Herein we review and compare the oxidation pathways, protein structures and catalytic patterns of the related metalloenzymes (phenol oxidases, heme enzymes and specially quercetinases), aiming for a deeper mechanistic understanding of the unusual biotransformation behaviors of quercetin and its seemingly controversial biological functions.
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Affiliation(s)
- Bin Guo
- Key Laboratory of Phytochemical R&D of Hunan Province, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), Hunan Normal University, Changsha, China
| | - Fang Chou
- Key Laboratory of Phytochemical R&D of Hunan Province, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), Hunan Normal University, Changsha, China
| | - Libin Huang
- Key Laboratory of Phytochemical R&D of Hunan Province, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), Hunan Normal University, Changsha, China
| | - Feifan Yin
- Key Laboratory of Phytochemical R&D of Hunan Province, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), Hunan Normal University, Changsha, China
| | - Jing Fang
- Key Laboratory of Phytochemical R&D of Hunan Province, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), Hunan Normal University, Changsha, China
| | - Jian-Bo Wang
- Key Laboratory of Phytochemical R&D of Hunan Province, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), Hunan Normal University, Changsha, China
| | - Zongchao Jia
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada
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17
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Kirindage KGIS, Fernando IPS, Jayasinghe AMK, Han EJ, Dias MKHM, Kang KP, Moon SI, Shin TS, Ma A, Ahn G. Moringa oleifera Hot Water Extract Protects Vero Cells from Hydrogen Peroxide-Induced Oxidative Stress by Regulating Mitochondria-Mediated Apoptotic Pathway and Nrf2/HO-1 Signaling. Foods 2022; 11:foods11030420. [PMID: 35159570 PMCID: PMC8834631 DOI: 10.3390/foods11030420] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 01/27/2022] [Accepted: 01/27/2022] [Indexed: 12/19/2022] Open
Abstract
The present study discloses the identification of phenolic compounds in Moringa oleifera hot water extract (MOH) and the evaluation of its antioxidant activity on H2O2-induced oxidative stress in Vero cells. Upon analysis, MOH was found to contain phenolic compounds and indicated 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS+) radical scavenging with IC50 values of 102.52 and 122.55 µg/mL, respectively. The ferric reducing antioxidant power (FRAP) of MOH indicated a dose-dependent increase with a maximum absorbance at 125 μg/mL and the oxygen radical absorbance capacity (ORAC) of MOH was 1004.95 µmol TE/mg. Results showed that MOH dose-dependently reduced intracellular ROS generation in H2O2-stimulated Vero cells while increasing the cell viability. Fluorescence microscopy and flowcytometric analyses have supported the above findings. MOH markedly suppressed the H2O2-induced mitochondrial depolarization and apoptosis through suppression of the mitochondrial-mediated apoptosis pathway and activated the Nrf2/HO-1 signaling pathway by possibly involving H2O2 generation in cell media. Findings of western blot were supported by immunocytochemistry of Nrf2 nuclear translocation. Thus, MOH bioactivity would potentiate its applications in manufacturing functional food.
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Affiliation(s)
| | | | | | - Eui-Jeong Han
- Department of Food Technology and Nutrition, Chonnam National University, Yeosu 59626, Korea; (K.G.I.S.K.); (A.M.K.J.); (E.-J.H.); (M.K.H.M.D.)
- Research Center for Healthcare and Biomedical Engineering, Chonnam National University, Yeosu 59626, Korea
| | | | - Kyung-Pil Kang
- Jeju Changhae Fisheries Co., Ltd., Jeju 63072, Korea; (K.-P.K.); (S.-I.M.)
| | - Sung-Ig Moon
- Jeju Changhae Fisheries Co., Ltd., Jeju 63072, Korea; (K.-P.K.); (S.-I.M.)
| | - Tai-Sun Shin
- Department of Food Science and Nutrition, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, Korea; (T.-S.S.); (A.M.)
| | - Ayeong Ma
- Department of Food Science and Nutrition, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, Korea; (T.-S.S.); (A.M.)
| | - Ginnae Ahn
- Department of Food Technology and Nutrition, Chonnam National University, Yeosu 59626, Korea; (K.G.I.S.K.); (A.M.K.J.); (E.-J.H.); (M.K.H.M.D.)
- Department of Marine Bio-Food Sciences, Chonnam National University, Yeosu 59626, Korea;
- Correspondence: ; Tel.: +82-61-659-7213
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18
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Ajoolabady A, Bi Y, McClements DJ, Lip GYH, Richardson DR, Reiter RJ, Klionsky DJ, Ren J. Melatonin-based therapeutics for atherosclerotic lesions and beyond: Focusing on macrophage mitophagy. Pharmacol Res 2022; 176:106072. [PMID: 35007709 DOI: 10.1016/j.phrs.2022.106072] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 01/05/2022] [Accepted: 01/05/2022] [Indexed: 12/11/2022]
Abstract
Atherosclerosis refers to a unique form of chronic proinflammatory anomaly of the vasculature, presented as rupture-prone or occlusive lesions in arteries. In advanced stages, atherosclerosis leads to the onset and development of multiple cardiovascular diseases with lethal consequences. Inflammatory cytokines in atherosclerotic lesions contribute to the exacerbation of atherosclerosis. Pharmacotherapies targeting dyslipidemia, hypercholesterolemia, and neutralizing inflammatory cytokines (TNF-α, IL-1β, IL-6, IL-17, and IL-12/23) have displayed proven promises although contradictory results. Moreover, adjuvants such as melatonin, a pluripotent agent with proven anti-inflammatory, anti-oxidative and neuroprotective properties, also display potentials in alleviating cytokine secretion in macrophages through mitophagy activation. Here, we share our perspectives on this concept and present melatonin-based therapeutics as a means to modulate mitophagy in macrophages and, thereby, ameliorate atherosclerosis.
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Affiliation(s)
- Amir Ajoolabady
- University of Wyoming College of Health Sciences, Laramie, WY 82071, USA; Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital Fudan University, Shanghai 200032, China
| | - Yaguang Bi
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital Fudan University, Shanghai 200032, China
| | - David J McClements
- Department of Food Science, University of Massachusetts Amherst, Amherst, MA 01003, USA
| | - Gregory Y H Lip
- University of Liverpool and Liverpool Heart & Chest Hospital, Liverpool, UK; Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Des R Richardson
- Molecular Pharmacology and Pathology Program, Department of Pathology and Bosch Institute, University of Sydney, Sydney, New South Wales 2006, Australia; Department of Pathology and Biological Responses, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan; Centre for Cancer Cell Biology and Drug Discovery, Griffith Institute for Drug Discovery, Griffith University, Nathan, Brisbane, Queensland 4111, Australia
| | - Russel J Reiter
- Department of Cellular and Structural Biology, University of Texas Health Science Center, San Antonio, TX, USA.
| | - Daniel J Klionsky
- Life Sciences Institute and Departments of Molecular, Cellular and Developmental Biology and Biological Chemistry, University of Michigan, Ann Arbor, MI 48109, USA.
| | - Jun Ren
- University of Wyoming College of Health Sciences, Laramie, WY 82071, USA; Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital Fudan University, Shanghai 200032, China; Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA 98195 USA.
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19
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Speisky H, Shahidi F, Costa de Camargo A, Fuentes J. Revisiting the Oxidation of Flavonoids: Loss, Conservation or Enhancement of Their Antioxidant Properties. Antioxidants (Basel) 2022; 11:antiox11010133. [PMID: 35052636 PMCID: PMC8772813 DOI: 10.3390/antiox11010133] [Citation(s) in RCA: 58] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 12/27/2021] [Accepted: 12/29/2021] [Indexed: 02/06/2023] Open
Abstract
Flavonoids display a broad range of health-promoting bioactivities. Among these, their capacity to act as antioxidants has remained most prominent. The canonical reactive oxygen species (ROS)-scavenging mode of the antioxidant action of flavonoids relies on the high susceptibility of their phenolic moieties to undergo oxidation. As a consequence, upon reaction with ROS, the antioxidant capacity of flavonoids is severely compromised. Other phenol-compromising reactions, such as those involved in the biotransformation of flavonoids, can also markedly affect their antioxidant properties. In recent years, however, increasing evidence has indicated that, at least for some flavonoids, the oxidation of such residues can in fact markedly enhance their original antioxidant properties. In such apparent paradoxical cases, the antioxidant activity arises from the pro-oxidant and/or electrophilic character of some of their oxidation-derived metabolites and is exerted by activating the Nrf2–Keap1 pathway, which upregulates the cell’s endogenous antioxidant capacity, and/or, by preventing the activation of the pro-oxidant and pro-inflammatory NF-κB pathway. This review focuses on the effects that the oxidative and/or non-oxidative modification of the phenolic groups of flavonoids may have on the ability of the resulting metabolites to promote direct and/or indirect antioxidant actions. Considering the case of a metabolite resulting from the oxidation of quercetin, we offer a comprehensive description of the evidence that increasingly supports the concept that, in the case of certain flavonoids, the oxidation of phenolics emerges as a mechanism that markedly amplifies their original antioxidant properties. An overlooked topic of great phytomedicine potential is thus unraveled.
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Affiliation(s)
- Hernan Speisky
- Laboratory of Antioxidants, Nutrition and Food Technology Institute, University of Chile, Santiago 7810000, Chile;
- Correspondence: (H.S.); (J.F.); Tel.: +56-(2)-2978-1519 (H.S.)
| | - Fereidoon Shahidi
- Department of Biochemistry, Memorial University of Newfoundland, St. John’s, NL A1B 3X9, Canada;
| | - Adriano Costa de Camargo
- Laboratory of Antioxidants, Nutrition and Food Technology Institute, University of Chile, Santiago 7810000, Chile;
| | - Jocelyn Fuentes
- Laboratory of Antioxidants, Nutrition and Food Technology Institute, University of Chile, Santiago 7810000, Chile;
- Faculty of Medicine, School of Kinesiology, Universidad Finis Terrae, Santiago 7501015, Chile
- Correspondence: (H.S.); (J.F.); Tel.: +56-(2)-2978-1519 (H.S.)
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20
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Zhang J, Yan E, Zhang L, Wang T, Wang C. Curcumin reduces oxidative stress and fat deposition in longissimus dorsi muscle of intrauterine growth-retarded finishing pigs. Anim Sci J 2022; 93:e13741. [PMID: 35707899 DOI: 10.1111/asj.13741] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 03/14/2022] [Accepted: 05/02/2022] [Indexed: 11/28/2022]
Abstract
Dietary curcumin possessing multiple biological activities may be an effective way to alleviate oxidative damage and fat deposition in intrauterine growth retardation (IUGR) finishing pigs. Therefore, this study was conducted to evaluate effects of dietary curcumin on meat quality, antioxidant capacity, and fat deposition of longissimus dorsi muscle in IUGR finishing pigs. Twelve normal birth weight (NBW) and 24 IUGR female piglets at 26 days of age were divided into 3 dietary groups: NBW (basal diet), IUGR (basal diet), and IUGR + Cur (basal diet supplemented with 200 mg/kg curcumin). The trial lasted for 169 days. Results showed that IUGR increased concentrations of malondialdehyde (MDA) and protein carbonyls (PC) and fat deposition in longissimus dorsi muscle. However, curcumin decreased the intramuscular fat content and the levels of MDA and PC and improved meat quality in IUGR pigs. Furthermore, curcumin inhibited the decrease of nuclear factor erythroid 2-related factor 2 (Nrf2) protein expression and decreased peroxisome pro liferator-activated receptors γ (PPARγ) expression in IUGR pigs. These findings suggested that dietary addition of 200 mg/kg curcumin could improve meat quality, alleviate oxidative stress through activating Nrf2 signaling pathway, and reduce fat deposition via inhibiting PPARγ expression in longissimus dorsi muscle of IUGR finishing pigs.
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Affiliation(s)
- Jiaqi Zhang
- College of Animal Science and Technology, National Experimental Teaching Demonstration Center for Animal Science, Nanjing Agricultural University, Nanjing, China
| | - Enfa Yan
- College of Animal Science and Technology, National Experimental Teaching Demonstration Center for Animal Science, Nanjing Agricultural University, Nanjing, China
| | - Lili Zhang
- College of Animal Science and Technology, National Experimental Teaching Demonstration Center for Animal Science, Nanjing Agricultural University, Nanjing, China
| | - Tian Wang
- College of Animal Science and Technology, National Experimental Teaching Demonstration Center for Animal Science, Nanjing Agricultural University, Nanjing, China
| | - Chao Wang
- College of Animal Science and Technology, National Experimental Teaching Demonstration Center for Animal Science, Nanjing Agricultural University, Nanjing, China
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21
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Zhang Y, Lv C, Sun J, Song X, Makaza N, Wu Y. Protective effects of broccoli extracts and sulforaphane against hydrogen peroxide induced oxidative stress in B16 cells. J Funct Foods 2021. [DOI: 10.1016/j.jff.2021.104833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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22
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de Rus Jacquet A, Ambaw A, Tambe MA, Ma SY, Timmers M, Grace MH, Wu QL, Simon JE, McCabe GP, Lila MA, Shi R, Rochet JC. Neuroprotective mechanisms of red clover and soy isoflavones in Parkinson's disease models. Food Funct 2021; 12:11987-12007. [PMID: 34751296 PMCID: PMC10822195 DOI: 10.1039/d1fo00007a] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Parkinson's disease (PD) is a neurodegenerative disorder characterized by nigrostriatal degeneration and the spreading of aggregated forms of the presynaptic protein α-synuclein (aSyn) throughout the brain. PD patients are currently only treated with symptomatic therapies, and strategies to slow or stop the progressive neurodegeneration underlying the disease's motor and cognitive symptoms are greatly needed. The time between the first neurobiochemical alterations and the initial presentation of symptoms is thought to span several years, and early neuroprotective dietary interventions could delay the disease onset or slow PD progression. In this study, we characterized the neuroprotective effects of isoflavones, a class of dietary polyphenols found in soy products and in the medicinal plant red clover (Trifolium pratense). We found that isoflavone-rich extracts and individual isoflavones rescued the loss of dopaminergic neurons and the shortening of neurites in primary mesencephalic cultures exposed to two PD-related insults, the environmental toxin rotenone and an adenovirus encoding the A53T aSyn mutant. The extracts and individual isoflavones also activated the Nrf2-mediated antioxidant response in astrocytes via a mechanism involving inhibition of the ubiquitin-proteasome system, and they alleviated deficits in mitochondrial respiration. Furthermore, an isoflavone-enriched soy extract reduced motor dysfunction exhibited by rats lesioned with the PD-related neurotoxin 6-OHDA. These findings suggest that plant-derived isoflavones could serve as dietary supplements to delay PD onset in at-risk individuals and mitigate neurodegeneration in the brains of patients.
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Affiliation(s)
- Aurélie de Rus Jacquet
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, IN, 47907, USA.
| | - Abeje Ambaw
- Department of Basic Medical Sciences, Purdue University, West Lafayette, IN, 47907, USA
| | - Mitali Arun Tambe
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, IN, 47907, USA.
| | - Sin Ying Ma
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, IN, 47907, USA.
| | - Michael Timmers
- Plants for Human Health Institute, Department of Food Bioprocessing and Nutrition Sciences, North Carolina State University, Kannapolis, NC, 28081, USA
| | - Mary H Grace
- Plants for Human Health Institute, Department of Food Bioprocessing and Nutrition Sciences, North Carolina State University, Kannapolis, NC, 28081, USA
| | - Qing-Li Wu
- Department of Plant Biology, Rutgers University, New Brunswick, NJ, 08901, USA
| | - James E Simon
- Department of Plant Biology, Rutgers University, New Brunswick, NJ, 08901, USA
| | - George P McCabe
- Department of Statistics, Purdue University, West Lafayette, IN 47907, USA
| | - Mary Ann Lila
- Plants for Human Health Institute, Department of Food Bioprocessing and Nutrition Sciences, North Carolina State University, Kannapolis, NC, 28081, USA
| | - Riyi Shi
- Department of Basic Medical Sciences, Purdue University, West Lafayette, IN, 47907, USA
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, 47907, USA
- Purdue Institute for Integrative Neuroscience, Purdue University, West Lafayette, IN, 47907, USA
| | - Jean-Christophe Rochet
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, IN, 47907, USA.
- Purdue Institute for Integrative Neuroscience, Purdue University, West Lafayette, IN, 47907, USA
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23
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Wangdi JT, O'Leary MF, Kelly VG, Jackman SR, Tang JCY, Dutton J, Bowtell JL. Tart Cherry Supplement Enhances Skeletal Muscle Glutathione Peroxidase Expression and Functional Recovery after Muscle Damage. Med Sci Sports Exerc 2021; 54:609-621. [PMID: 34772901 DOI: 10.1249/mss.0000000000002827] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
INTRODUCTION Montmorency cherry concentrate (MCC) supplementation enhances functional recovery from exercise, potentially due to antioxidant and anti-inflammatory effects. However, to date, supporting empirical evidence for these mechanistic hypotheses is reliant on indirect blood biomarkers. This study is the first to investigate functional recovery from exercise alongside molecular changes within the exercised muscle following MCC supplementation. METHODS Ten participants completed two maximal unilateral eccentric knee extension trials following MCC or placebo supplementation for 7 days prior to and 48 hours following exercise. Knee extension maximum voluntary isometric contractions (MVC), maximal isokinetic contractions, single leg jumps, and soreness measures were assessed before, immediately, 24 and 48 h after exercise. Venous blood and vastus lateralis muscle samples were collected at each time point. Plasma concentrations of IL-6, TNF-α, C-reactive protein, creatine kinase, and phenolic acids were quantified. Intramuscular mRNA expression of SOD 1 and 3, GPX1, 3, 4 and 7, Catalase, and Nrf2 and relative intramuscular protein expression of SOD1, Catalase and GPX3 were quantified. RESULTS MCC supplementation enhanced recovery of normalized MVC 1 s average compared to placebo (Post- Exercise PLA: 59.5 ± 18.0% vs MCC: 76.5 ± 13.9%; 24 h PLA: 69.8 ± 15.9% vs MCC: 80.5 ± 15.3%; supplementation effect p = 0.024). MCC supplementation increased plasma hydroxybenzoic, hippuric and vanillic acid concentrations (supplementation effect p = 0.028, p = 0.002, p = 0.003); SOD3, GPX3, GPX4, GPX7 (supplement effect p < 0.05) and GPX1 (interaction effect p = 0.017) gene expression; and GPX3 protein expression (supplementation effect p = 0.004) versus placebo. There were no significant differences between conditions for other outcome measures. CONCLUSION MCC supplementation conserved isometric muscle strength and upregulated antioxidant gene and protein expression in parallel with increased phenolic acid concentrations.
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Affiliation(s)
- Jimmy T Wangdi
- School of Human Movement and Nutrition Sciences, University of Queensland, Brisbane, QLD, Australia Sport and Health Sciences, St Luke's Campus, University of Exeter, Exeter, Devon, United Kingdom School of Exercise and Nutrition Sciences, Queensland University of Technology, Brisbane, QLD, Australia Norwich Medical School, University of East Anglia, Norwich Research Park, Norwich, Norfolk, United Kingdom
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Canedo-Santos JC, Carrillo-Garmendia A, Mora-Martinez I, Gutierrez-Garcia IK, Ramirez-Romero MG, Regalado-Gonzalez C, Nava GM, Madrigal-Perez LA. Resveratrol shortens the chronological lifespan of Saccharomyces cerevisiae by a pro-oxidant mechanism. Yeast 2021; 39:193-207. [PMID: 34693568 DOI: 10.1002/yea.3677] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 10/19/2021] [Indexed: 12/30/2022] Open
Abstract
The antioxidant phenotype caused by resveratrol has been recognized as a key piece in the health benefits exerted by this phytochemical in diseases related to aging. It has recently been proposed that a mitochondrial pro-oxidant mechanism could be the cause of resveratrol antioxidant properties. In this regard, the hypothesis that resveratrol impedes electron transport to complex III of the electron transport chain as its main target suggests that resveratrol could increase reactive oxygen species (ROS) generation through reverse electron transport or by the semiquinones formation. This idea also explains that cells respond to resveratrol oxidative damage, inducing their antioxidant systems. Moreover, resveratrol pro-oxidant properties could accelerate the aging process, according to the free radical theory of aging, which postulates that organism's age due to the accumulation of the harmful effects of ROS in cells. Nonetheless, there is no evidence linking the chronological lifespan (CLS) shorten occasioned by resveratrol with a pro-oxidant mechanism. Hence, this study aimed to evaluate whether resveratrol shortens the CLS of Saccharomyces cerevisiae due to a pro-oxidant activity. Herein, we provide evidence that supplementation with 100 μM of resveratrol at 5% glucose: (1) shortened the CLS of ctt1Δ and yap1Δ strains; (2) decreased ROS levels and increased the catalase activity in WT strain; (3) maintained unaffected the ROS levels and did not change the catalase activity in ctt1Δ strain; and (4) lessened the exponential growth of ctt1Δ strain, which was restored with the adding of reduced glutathione. These results indicate that resveratrol decreases CLS by a pro-oxidant mechanism.
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Affiliation(s)
- Juan Carlos Canedo-Santos
- División de Ingeniería Bioquímica, Tecnológico Nacional de México/Instituto Tecnológico Superior de Ciudad Hidalgo, Ciudad Hidalgo, Mexico
| | | | - Iridian Mora-Martinez
- División de Ingeniería Bioquímica, Tecnológico Nacional de México/Instituto Tecnológico Superior de Ciudad Hidalgo, Ciudad Hidalgo, Mexico
| | - Ingrid Karina Gutierrez-Garcia
- División de Ingeniería Bioquímica, Tecnológico Nacional de México/Instituto Tecnológico Superior de Ciudad Hidalgo, Ciudad Hidalgo, Mexico
| | - Maria Guadalupe Ramirez-Romero
- División de Ingeniería Bioquímica, Tecnológico Nacional de México/Instituto Tecnológico Superior de Ciudad Hidalgo, Ciudad Hidalgo, Mexico
| | | | - Gerardo M Nava
- Facultad de Química, Universidad Autónoma de Querétaro, Santiago de Querétaro, Mexico
| | - Luis Alberto Madrigal-Perez
- División de Ingeniería Bioquímica, Tecnológico Nacional de México/Instituto Tecnológico Superior de Ciudad Hidalgo, Ciudad Hidalgo, Mexico
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Tentscher PR, Escher BI, Schlichting R, König M, Bramaz N, Schirmer K, von Gunten U. Toxic effects of substituted p-benzoquinones and hydroquinones in in vitro bioassays are altered by reactions with the cell assay medium. WATER RESEARCH 2021; 202:117415. [PMID: 34348209 DOI: 10.1016/j.watres.2021.117415] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 06/19/2021] [Accepted: 07/02/2021] [Indexed: 06/13/2023]
Abstract
Substituted para-benzoquinones and hydroquinones are ubiquitous transformation products that arise during oxidative water treatment of phenolic precursors, for example through ozonation or chlorination. The benzoquinone structural motive is associated with mutagenicity and carcinogenicity, and also with induction of the oxidative stress response through the Nrf2 pathway. For either endpoint, toxicological data for differently substituted compounds are scarce. In this study, oxidative stress response, as indicated by the AREc32 in vitro bioassay, was induced by differently substituted para-benzoquinones, but also by the corresponding hydroquinones. Bioassays that indicate defense against genotoxicity (p53RE-bla) and DNA repair activity (UmuC) were not activated by these compounds. Stability tests conducted under incubation conditions, but in the absence of cell lines, showed that tested para-benzoquinones reacted rapidly with constituents of the incubation medium. Compounds were abated already in phosphate buffer, but even faster in biological media, with reactions attributed to amino- and thiol-groups of peptides, proteins, and free amino acids. The products of these reactions were often the corresponding substituted hydroquinones. Conversely, differently substituted hydroquinones were quantitatively oxidized to p-benzoquinones over the course of the incubation. The observed induction of the oxidative stress response was attributed to hydroquinones that are presumably oxidized to benzoquinones inside the cells. Despite the instability of the tested compounds in the incubation medium, the AREc32 in vitro bioassay could be used as an unspecific sum parameter to detect para-benzoquinones and hydroquinones in oxidatively treated waters.
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Affiliation(s)
- Peter R Tentscher
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Duebendorf CH-8600, Switzerland; Department of Chemistry and Bioscience, Aalborg University, Aalborg 9220, Denmark
| | - Beate I Escher
- Department of Cell Toxicology, UFZ - Helmholtz Centre for Environmental Research, Leipzig 04318, Germany; Center for Applied Geoscience, Eberhard Karls University of Tübingen, Schnarrenbergstr. 94-96, Tübingen 72076, Germany
| | - Rita Schlichting
- Department of Cell Toxicology, UFZ - Helmholtz Centre for Environmental Research, Leipzig 04318, Germany
| | - Maria König
- Department of Cell Toxicology, UFZ - Helmholtz Centre for Environmental Research, Leipzig 04318, Germany
| | - Nadine Bramaz
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Duebendorf CH-8600, Switzerland
| | - Kristin Schirmer
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Duebendorf CH-8600, Switzerland; Department of Environmental Systems Science, ETH Zürich, Zürich CH-8092, Switzerland; Civil and Environmental Engineering (ENAC), School of Architecture, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne CH-1015, Switzerland
| | - Urs von Gunten
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Duebendorf CH-8600, Switzerland; Civil and Environmental Engineering (ENAC), School of Architecture, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne CH-1015, Switzerland.
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Asanuma M, Miyazaki I. Glutathione and Related Molecules in Parkinsonism. Int J Mol Sci 2021; 22:ijms22168689. [PMID: 34445395 PMCID: PMC8395390 DOI: 10.3390/ijms22168689] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 08/08/2021] [Accepted: 08/11/2021] [Indexed: 12/14/2022] Open
Abstract
Glutathione (GSH) is the most abundant intrinsic antioxidant in the central nervous system, and its substrate cysteine readily becomes the oxidized dimeric cystine. Since neurons lack a cystine transport system, neuronal GSH synthesis depends on cystine uptake via the cystine/glutamate exchange transporter (xCT), GSH synthesis, and release in/from surrounding astrocytes. Transcription factor nuclear factor erythroid 2-related factor 2 (Nrf2), a detoxifying master transcription factor, is expressed mainly in astrocytes and activates the gene expression of various phase II drug-metabolizing enzymes or antioxidants including GSH-related molecules and metallothionein by binding to the antioxidant response element (ARE) of these genes. Accumulating evidence has shown the involvement of dysfunction of antioxidative molecules including GSH and its related molecules in the pathogenesis of Parkinson’s disease (PD) or parkinsonian models. Furthermore, we found several agents targeting GSH synthesis in the astrocytes that protect nigrostriatal dopaminergic neuronal loss in PD models. In this article, the neuroprotective effects of supplementation and enhancement of GSH and its related molecules in PD pathology are reviewed, along with introducing new experimental findings, especially targeting of the xCT-GSH synthetic system and Nrf2–ARE pathway in astrocytes.
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Bam S, Buchanan E, Mahony C, O'Ryan C. DNA Methylation of PGC-1α Is Associated With Elevated mtDNA Copy Number and Altered Urinary Metabolites in Autism Spectrum Disorder. Front Cell Dev Biol 2021; 9:696428. [PMID: 34381777 PMCID: PMC8352569 DOI: 10.3389/fcell.2021.696428] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 07/05/2021] [Indexed: 12/12/2022] Open
Abstract
Autism spectrum disorder (ASD) is a complex disorder that is underpinned by numerous dysregulated biological pathways, including pathways that affect mitochondrial function. Epigenetic mechanisms contribute to this dysregulation and DNA methylation is an important factor in the etiology of ASD. We measured DNA methylation of peroxisome proliferator-activated receptor-gamma coactivator-1 alpha (PGC-1α), as well as five genes involved in regulating mitochondrial homeostasis to examine mitochondrial dysfunction in an ASD cohort of South African children. Using targeted Next Generation bisulfite sequencing, we found differential methylation (p < 0.05) at six key genes converging on mitochondrial biogenesis, fission and fusion in ASD, namely PGC-1α, STOML2, MFN2, FIS1, OPA1, and GABPA. PGC-1α, the transcriptional regulator of biogenesis, was significantly hypermethylated at eight CpG sites in the gene promoter, one of which contained a putative binding site for CAMP response binding element 1 (CREB1) (p = 1 × 10–6). Mitochondrial DNA (mtDNA) copy number, a marker of mitochondrial function, was elevated (p = 0.002) in ASD compared to controls and correlated significantly with DNA methylation at the PGC-1α promoter and there was a positive correlation between methylation at PGC-1α CpG#1 and mtDNA copy number (Spearman’s r = 0.2, n = 49, p = 0.04) in ASD. Furthermore, DNA methylation at PGC-1α CpG#1 and mtDNA copy number correlated significantly (p < 0.05) with levels of urinary organic acids associated with mitochondrial dysfunction, oxidative stress, and neuroendocrinology. Our data show differential methylation in ASD at six key genes converging on PGC-1α-dependent regulation of mitochondrial biogenesis and function. We demonstrate that methylation at the PGC-1α promoter is associated with elevated mtDNA copy number and metabolomic evidence of mitochondrial dysfunction in ASD. This highlights an unexplored role for DNA methylation in regulating specific pathways involved in mitochondrial biogenesis, fission and fusion contributing to mitochondrial dysfunction in ASD.
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Affiliation(s)
- Sophia Bam
- Department of Molecular and Cell Biology, University of Cape Town, Cape Town, South Africa
| | - Erin Buchanan
- Department of Molecular and Cell Biology, University of Cape Town, Cape Town, South Africa
| | - Caitlyn Mahony
- Department of Molecular and Cell Biology, University of Cape Town, Cape Town, South Africa
| | - Colleen O'Ryan
- Department of Molecular and Cell Biology, University of Cape Town, Cape Town, South Africa
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Xie K, He X, Hou DX, Zhang B, Song Z. Evaluation of Nitrogen-Corrected Apparent Metabolizable Energy and Standardized Ileal Amino Acid Digestibility of Different Sources of Rice and Rice Milling Byproducts in Broilers. Animals (Basel) 2021; 11:ani11071894. [PMID: 34202124 PMCID: PMC8300392 DOI: 10.3390/ani11071894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 06/08/2021] [Accepted: 06/21/2021] [Indexed: 11/16/2022] Open
Abstract
Simple Summary Rice is the major cereal plant worldwide; the rice processing procedure has produced several rice byproducts that are not for human consumption but are usually used as a feed ingredient for broilers. However, due to the variation of geographic and processing methods, the quality of rice and rice byproducts is merely coincident. Thus, analysis of the chemical composition and evaluation of nutrition digestibility of rice and its byproducts in broilers and establishing the regression equation is vitally important in diet formulation and resource efficiency. Based on the above information, this study examined the differences in the chemical composition of rice, broken rice, and full-fat rice bran from the different major production areas of China, evaluated the nitrogen-corrected apparent metabolizable energy and standardized ileal amino acid digestibility in broilers by nitrogen-free diet method, established a regression equation based on partial correlation assay, and provided novel information in the diet formulation of rice, broken rice, and full-fat rice bran in broilers. Abstract Rice, broken rice (BR), and full-fat rice bran (FFRB) from six different origins were analyzed for their chemical composition, nitrogen-corrected apparent metabolized energy (AMEn), and standardized amino acid digestibility (SIAAD) in 14-day-old and 28-day-old Arbor Acres broilers. Results showed broilers fed with rice and BR had a similar AMEn regardless of the rice and BR having different CP, EE, NDF, ADF, and ash content. FFRB containing significantly different CP, EE, NDF, ADFm and starch presented variable AMEn (p < 0.05), suggesting that starch content in rice and its byproducts contributed most to the AMEn of broilers. The regression equation of AMEn = 14.312 − (0.198 × NDF) and AMEn = 6.491 + (0.103 × Starch) were feasible to integrally predict AMEn of broilers fed to rice and its byproducts. Moreover, 28-day-old broilers had higher SIAAD than 14-day-old ones. The SIAAD of rice were higher than BR and FFRB except for Met, Cys, Thr, and Tyr in 14-day-old broilers (p < 0.05), and the SIAAD of His, Asp, and Ser in BR were higher than FFRB (p < 0.05). In 28-day-old broilers, the SIAAD of Leu, Trp, Asp, Gly, and Pro of rice were still higher than BR and FFRB (p < 0.05), but BR and FFRB had no significant differences (p > 0.05). The regression equations to estimate the SIAAD of Thr, Lys, and Met were: Met = 81.46 + (0.578 × CP), Thr = 0.863 + (6.311 × CP), and Trp = 102.883 − (1.77 × CP), indicating that CP content in rice and its byproducts was likely a major factor for prediction of SIAAD.
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Affiliation(s)
- Kun Xie
- College of Animal Science and Technology, Hunan Engineering Research Center for Poultry Safety, Hunan Agricultural University, Changsha 410128, China; (K.X.); (X.H.)
- Course of Biological Science and Technology, United Graduate School of Agricultural Sciences, Kagoshima University, Kagoshima 890-0056, Japan;
| | - Xi He
- College of Animal Science and Technology, Hunan Engineering Research Center for Poultry Safety, Hunan Agricultural University, Changsha 410128, China; (K.X.); (X.H.)
- Hunan Co-Innovation Center of Animal Production Safety, Changsha 410128, China
| | - De-Xing Hou
- Course of Biological Science and Technology, United Graduate School of Agricultural Sciences, Kagoshima University, Kagoshima 890-0056, Japan;
- Department of Biochemical Science and Technology, Faculty of Agriculture, Kagoshima University, Kagoshima 890-0056, Japan
| | - Bingkun Zhang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100083, China;
| | - Zehe Song
- College of Animal Science and Technology, Hunan Engineering Research Center for Poultry Safety, Hunan Agricultural University, Changsha 410128, China; (K.X.); (X.H.)
- Hunan Co-Innovation Center of Animal Production Safety, Changsha 410128, China
- Correspondence:
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Long J, Guan P, Hu X, Yang L, He L, Lin Q, Luo F, Li J, He X, Du Z, Li T. Natural Polyphenols as Targeted Modulators in Colon Cancer: Molecular Mechanisms and Applications. Front Immunol 2021; 12:635484. [PMID: 33664749 PMCID: PMC7921316 DOI: 10.3389/fimmu.2021.635484] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 01/22/2021] [Indexed: 12/29/2022] Open
Abstract
Colon cancer commonly develops from long-term chronic inflammation in the intestine and seriously threatens human health. Natural polyphenols have been valued as a crucial regulator of nutrient metabolism and metabolic diseases, owing to their anti-inflammatory and antioxidant functions and the ability to maintain a balance between gut microbes and their hosts. Notably, experimental and clinical evidence has shown that natural polyphenols could act as a targeted modulator to play a key role in the prevention or treatment of colon cancer. Thus, in this review, we summarized recent advances in the possible regulatory mechanism and the potential application of natural polyphenols in colon cancer, which might be regarded as a novel platform for the colon cancer management.
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Affiliation(s)
- Jing Long
- Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, Laboratory of Animal Nutrition and Human Health, College of Life Sciences, Hunan Normal University, Changsha, China.,Key Laboratory of Agro-ecological Processes in Subtropical Region, Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
| | - Peng Guan
- Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, Laboratory of Animal Nutrition and Human Health, College of Life Sciences, Hunan Normal University, Changsha, China.,Key Laboratory of Agro-ecological Processes in Subtropical Region, Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
| | - Xian Hu
- Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, Laboratory of Animal Nutrition and Human Health, College of Life Sciences, Hunan Normal University, Changsha, China.,Key Laboratory of Agro-ecological Processes in Subtropical Region, Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
| | - Lingyuan Yang
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, China
| | - Liuqin He
- Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, Laboratory of Animal Nutrition and Human Health, College of Life Sciences, Hunan Normal University, Changsha, China.,Key Laboratory of Agro-ecological Processes in Subtropical Region, Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
| | - Qinlu Lin
- National Engineering Laboratory for Deep Process of Rice and Byproducts, Hunan Key Laboratory of Grain-oil Deep Process and Quality Control, College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha, China
| | - Feijun Luo
- National Engineering Laboratory for Deep Process of Rice and Byproducts, Hunan Key Laboratory of Grain-oil Deep Process and Quality Control, College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha, China
| | - Jianzhong Li
- Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, Laboratory of Animal Nutrition and Human Health, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Xingguo He
- Changsha Green Leaf Biotechnology Co., Ltd., Changsha, China
| | - Zhiliang Du
- Cloud Computing Center, Chinese Academy of Sciences, Dongguan, China
| | - Tiejun Li
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
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Fizeșan I, Rusu ME, Georgiu C, Pop A, Ștefan MG, Muntean DM, Mirel S, Vostinaru O, Kiss B, Popa DS. Antitussive, Antioxidant, and Anti-Inflammatory Effects of a Walnut ( Juglans regia L.) Septum Extract Rich in Bioactive Compounds. Antioxidants (Basel) 2021; 10:119. [PMID: 33467612 PMCID: PMC7830861 DOI: 10.3390/antiox10010119] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 01/11/2021] [Accepted: 01/12/2021] [Indexed: 02/07/2023] Open
Abstract
The antitussive, antioxidant, and anti-inflammatory effects of a walnut (Juglans regia L.) septum extract (WSE), rich in bioactive compounds were investigated using the citric acid aerosol-induced cough experimental model in rodents. Wistar male rats were treated orally for three days with distilled water (control), codeine (reference), and WSE in graded doses. On the third day, all rats were exposed to citric acid aerosols, the number of coughs being recorded. Each animal was sacrificed after exposure, and blood and lung tissue samples were collected for histopathological analysis and the assessment of oxidative stress and inflammatory biomarkers. The results of the experiment showed a significant antitussive effect of WSE, superior to codeine. This activity could be due to cellular protective effect and anti-inflammatory effect via the stimulation of the antioxidant enzyme system and the decrease of IL-6 and CXC-R1 concentration in the lung tissue of WSE-treated animals. The antioxidant and anti-inflammatory effects of WSE were confirmed by biochemical assays and histopathological analysis. This is the first scientific study reporting the antitussive effect of walnut septum, a new potential source of non-opioid antitussive drug candidates, and a valuable bioactive by-product that could be used in the treatment of respiratory diseases.
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Affiliation(s)
- Ionel Fizeșan
- Department of Toxicology, Faculty of Pharmacy, Iuliu Hatieganu University of Medicine and Pharmacy, 8 Victor Babes, 400012 Cluj-Napoca, Romania; (I.F.); (A.P.); (M.-G.Ș.); (B.K.); (D.-S.P.)
| | - Marius Emil Rusu
- Department of Pharmaceutical Technology and Biopharmaceutics, Faculty of Pharmacy, Iuliu Hatieganu University of Medicine and Pharmacy, 8 Victor Babes, 400012 Cluj-Napoca, Romania; (M.E.R.); (D.-M.M.)
| | - Carmen Georgiu
- Department of Pathological Anatomy, Faculty of Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 8 Victor Babes, 400012 Cluj-Napoca, Romania
| | - Anca Pop
- Department of Toxicology, Faculty of Pharmacy, Iuliu Hatieganu University of Medicine and Pharmacy, 8 Victor Babes, 400012 Cluj-Napoca, Romania; (I.F.); (A.P.); (M.-G.Ș.); (B.K.); (D.-S.P.)
| | - Maria-Georgia Ștefan
- Department of Toxicology, Faculty of Pharmacy, Iuliu Hatieganu University of Medicine and Pharmacy, 8 Victor Babes, 400012 Cluj-Napoca, Romania; (I.F.); (A.P.); (M.-G.Ș.); (B.K.); (D.-S.P.)
| | - Dana-Maria Muntean
- Department of Pharmaceutical Technology and Biopharmaceutics, Faculty of Pharmacy, Iuliu Hatieganu University of Medicine and Pharmacy, 8 Victor Babes, 400012 Cluj-Napoca, Romania; (M.E.R.); (D.-M.M.)
| | - Simona Mirel
- Department of Medical Devices, Faculty of Pharmacy, Iuliu Hatieganu University of Medicine and Pharmacy, 8 Victor Babes, 400012 Cluj-Napoca, Romania;
| | - Oliviu Vostinaru
- Department of Pharmacology, Physiology and Physiopathology, Faculty of Pharmacy, Iuliu Hatieganu University of Medicine and Pharmacy, 8 Victor Babes, 400012 Cluj-Napoca, Romania
| | - Béla Kiss
- Department of Toxicology, Faculty of Pharmacy, Iuliu Hatieganu University of Medicine and Pharmacy, 8 Victor Babes, 400012 Cluj-Napoca, Romania; (I.F.); (A.P.); (M.-G.Ș.); (B.K.); (D.-S.P.)
| | - Daniela-Saveta Popa
- Department of Toxicology, Faculty of Pharmacy, Iuliu Hatieganu University of Medicine and Pharmacy, 8 Victor Babes, 400012 Cluj-Napoca, Romania; (I.F.); (A.P.); (M.-G.Ș.); (B.K.); (D.-S.P.)
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Miyazaki I, Asanuma M. Neuron-Astrocyte Interactions in Parkinson's Disease. Cells 2020; 9:cells9122623. [PMID: 33297340 PMCID: PMC7762285 DOI: 10.3390/cells9122623] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 11/20/2020] [Accepted: 12/05/2020] [Indexed: 12/12/2022] Open
Abstract
Parkinson’s disease (PD) is the second most common neurodegenerative disease. PD patients exhibit motor symptoms such as akinesia/bradykinesia, tremor, rigidity, and postural instability due to a loss of nigrostriatal dopaminergic neurons. Although the pathogenesis in sporadic PD remains unknown, there is a consensus on the involvement of non-neuronal cells in the progression of PD pathology. Astrocytes are the most numerous glial cells in the central nervous system. Normally, astrocytes protect neurons by releasing neurotrophic factors, producing antioxidants, and disposing of neuronal waste products. However, in pathological situations, astrocytes are known to produce inflammatory cytokines. In addition, various studies have reported that astrocyte dysfunction also leads to neurodegeneration in PD. In this article, we summarize the interaction of astrocytes and dopaminergic neurons, review the pathogenic role of astrocytes in PD, and discuss therapeutic strategies for the prevention of dopaminergic neurodegeneration. This review highlights neuron-astrocyte interaction as a target for the development of disease-modifying drugs for PD in the future.
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Wang Y, Chen Y, Zhang X, Lu Y, Chen H. New insights in intestinal oxidative stress damage and the health intervention effects of nutrients: A review. J Funct Foods 2020. [DOI: 10.1016/j.jff.2020.104248] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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Silva JM, Nobre MSC, Albino SL, Lócio LL, Nascimento APS, Scotti L, Scotti MT, Oshiro-Junior JA, Lima MCA, Mendonça-Junior FJB, Moura RO. Secondary Metabolites with Antioxidant Activities for the Putative Treatment of Amyotrophic Lateral Sclerosis (ALS): "Experimental Evidences". OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:5642029. [PMID: 33299526 PMCID: PMC7707995 DOI: 10.1155/2020/5642029] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 10/02/2020] [Accepted: 10/04/2020] [Indexed: 12/22/2022]
Abstract
Amyotrophic lateral sclerosis (ALS) is a fatal motor neuron disorder that is characterized by progressive loss of the upper and lower motor neurons at the spinal or bulbar level. Oxidative stress (OS) associated with mitochondrial dysfunction and the deterioration of the electron transport chain are factors that contribute to neurodegeneration and perform a potential role in the pathogenesis of ALS. Natural antioxidant molecules have been proposed as an alternative form of treatment for the prevention of age-related neurological diseases, in which ALS is included. Researches support that regulations in cellular reduction/oxidation (redox) processes are being increasingly implicated in this disease, and antioxidant drugs are aimed at a promising pathway to treatment. Among the strategies used for obtaining new drugs, we can highlight the isolation of secondary metabolite compounds from natural sources that, along with semisynthetic derivatives, correspond to approximately 40% of the drugs found on the market. Among these compounds, we emphasize oxygenated and nitrogenous compounds, such as flavonoids, coumarins, and alkaloids, in addition to the fatty acids, that already stand out in the literature for their antioxidant properties, consisting in a part of the diets of millions of people worldwide. Therefore, this review is aimed at presenting and summarizing the main articles published within the last years, which represent the therapeutic potential of antioxidant compounds of natural origin for the treatment of ALS.
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Affiliation(s)
- Jamire M. Silva
- Postgraduate Program in Pharmaceutical Sciences-PPGCF, Department of Pharmacy, Federal University of Pernambuco, 50670-901 Recife PB, Brazil
- Drug Development and Synthesis Laboratory, Department of Pharmacy, State University of Paraiba, 58429-500 Campina Grande PB, Brazil
| | - Michelangela S. C. Nobre
- Postgraduate Program in Pharmaceutical Sciences-PPGCF, Department of Pharmacy, Federal University of Pernambuco, 50670-901 Recife PB, Brazil
- Drug Development and Synthesis Laboratory, Department of Pharmacy, State University of Paraiba, 58429-500 Campina Grande PB, Brazil
| | - Sonaly L. Albino
- Drug Development and Synthesis Laboratory, Department of Pharmacy, State University of Paraiba, 58429-500 Campina Grande PB, Brazil
- Postgraduate Program in Pharmaceutical Sciences-PPGCF, Department of Pharmacy, State University of Paraiba, 58429-500 Campina Grande PB, Brazil
| | - Lucas L. Lócio
- Drug Development and Synthesis Laboratory, Department of Pharmacy, State University of Paraiba, 58429-500 Campina Grande PB, Brazil
- Postgraduate Program in Pharmaceutical Sciences-PPGCF, Department of Pharmacy, State University of Paraiba, 58429-500 Campina Grande PB, Brazil
| | - Agnis P. S. Nascimento
- Drug Development and Synthesis Laboratory, Department of Pharmacy, State University of Paraiba, 58429-500 Campina Grande PB, Brazil
- Graduate Program in Chemistry-PPGQ, Department of Chemistry, State University of Paraiba, 58429-500 Campina Grande PB, Brazil
| | - Luciana Scotti
- Laboratory of Cheminformatics, Program of Natural and Synthetic Bioactive Products, Federal University of Paraiba, João Pessoa PB, Brazil
| | - Marcus T. Scotti
- Laboratory of Cheminformatics, Program of Natural and Synthetic Bioactive Products, Federal University of Paraiba, João Pessoa PB, Brazil
| | - João A. Oshiro-Junior
- Postgraduate Program in Pharmaceutical Sciences-PPGCF, Department of Pharmacy, State University of Paraiba, 58429-500 Campina Grande PB, Brazil
| | - Maria C. A. Lima
- Postgraduate Program in Pharmaceutical Sciences-PPGCF, Department of Pharmacy, Federal University of Pernambuco, 50670-901 Recife PB, Brazil
| | - Francisco J. B. Mendonça-Junior
- Laboratory of Synthesis and Drug Delivery, Department of Biological Sciences, State University of Paraiba, 58071-160 João Pessoa PB, Brazil
| | - Ricardo O. Moura
- Drug Development and Synthesis Laboratory, Department of Pharmacy, State University of Paraiba, 58429-500 Campina Grande PB, Brazil
- Postgraduate Program in Pharmaceutical Sciences-PPGCF, Department of Pharmacy, State University of Paraiba, 58429-500 Campina Grande PB, Brazil
- Graduate Program in Chemistry-PPGQ, Department of Chemistry, State University of Paraiba, 58429-500 Campina Grande PB, Brazil
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Gureev AP, Sadovnikova IS, Starkova NN, Starkov AA, Popov VN. p62-Nrf2-p62 Mitophagy Regulatory Loop as a Target for Preventive Therapy of Neurodegenerative Diseases. Brain Sci 2020; 10:brainsci10110847. [PMID: 33198234 PMCID: PMC7696015 DOI: 10.3390/brainsci10110847] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 11/08/2020] [Accepted: 11/09/2020] [Indexed: 12/16/2022] Open
Abstract
Turnover of the mitochondrial pool due to coordinated processes of mitochondrial biogenesis and mitophagy is an important process in maintaining mitochondrial stability. An important role in this process is played by the Nrf2/ARE signaling pathway, which is involved in the regulation of the expression of genes responsible for oxidative stress protection, regulation of mitochondrial biogenesis, and mitophagy. The p62 protein is a multifunctional cytoplasmic protein that functions as a selective mitophagy receptor for the degradation of ubiquitinated substrates. There is evidence that p62 can positively regulate Nrf2 by binding to its negative regulator, Keap1. However, there is also strong evidence that Nrf2 up-regulates p62 expression. Thereby, a regulatory loop is formed between two important signaling pathways, which may be an important target for drugs aimed at treating neurodegeneration. Constitutive activation of p62 in parallel with Nrf2 would most likely result in the activation of mTORC1-mediated signaling pathways that are associated with the development of malignant neoplasms. The purpose of this review is to describe the p62-Nrf2-p62 regulatory loop and to evaluate its role in the regulation of mitophagy under various physiological conditions.
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Affiliation(s)
- Artem P. Gureev
- Department of Genetics, Cytology and Bioengineering, Voronezh State University, 394018 Voronezh, Russia; (I.S.S.); (V.N.P.)
- Correspondence:
| | - Irina S. Sadovnikova
- Department of Genetics, Cytology and Bioengineering, Voronezh State University, 394018 Voronezh, Russia; (I.S.S.); (V.N.P.)
| | | | - Anatoly A. Starkov
- Neuroscience Department, Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY 10065, USA;
| | - Vasily N. Popov
- Department of Genetics, Cytology and Bioengineering, Voronezh State University, 394018 Voronezh, Russia; (I.S.S.); (V.N.P.)
- Voronezh State University of Engineering Technologies, 394018 Voronezh, Russia
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Condensed tannins enhanced antioxidant capacity and hypoxic stress survivability but not growth performance and fatty acid profile of juvenile Japanese seabass (Lateolabrax japonicus). Anim Feed Sci Technol 2020. [DOI: 10.1016/j.anifeedsci.2020.114671] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Evaluation of Toxic Effects of Novel Platinum (IV) Complexes in Female Rat Liver: Potential Protective Role of Resveratrol. Cell Biochem Biophys 2020; 79:141-152. [PMID: 33094405 DOI: 10.1007/s12013-020-00953-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/12/2020] [Indexed: 10/23/2022]
Abstract
The use of cisplatin in chemotherapy may provoke a deteriorating impact in many vital organs, suggesting the need for more selective derivatives and effective protective cotreatments. This study assesses the effects of three novel Pt(IV) complexes containing ethyl-, propyl- and butyl-esters of the ethylenediamine-N, N'-di-S, S- (2,2'-dibenzyl) acetic acid on liver injury markers, redox parameters, and cell morphology of female rat liver tissue in comparison to cisplatin. In addition, the study evaluates the possible protective effects of resveratrol as well. The rats were divided into ten groups and were administered intraperitoneally with a single dose of cisplatin (7.5 mg/kg) or Pt(IV) complexes (10 mg/kg) and/or resveratrol (25 mg/kg). All treatments caused changes in body weight, food intake, and liver/bw ratio. Acute treatment with novel complexes decreased the levels of TB and TP while elevated the activity of ALT, AST, GGT, ALP which subsequently indicated on the liver damage. All three complexes significantly reduced the levels of LPO, O2.-, NO2- and activity of CAT, while increasing the activity of SOD, GSH-Px, GR, GST, and level of GSH, implying that these compounds could provoke redox balance disruption in liver cells. Moreover, according to the histopathological observations, the novel Pt(IV) complexes exerted stronger hepatotoxicity than cisplatin. Possible protective effects of resveratrol were not detected and even combined with examined compounds it abolished the activity of the antioxidative system of the liver cells causing more intense toxicity. Further investigation is required to elucidate the effects of Pt-based drugs and resveratrol in the estradiol-rich environment of female rats as well their influence on male rats' tissues.
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Hseu YC, Chiang YC, Vudhya Gowrisankar Y, Lin KY, Huang ST, Shrestha S, Chang GR, Yang HL. The In Vitro and In Vivo Anticancer Properties of Chalcone Flavokawain B through Induction of ROS-Mediated Apoptotic and Autophagic Cell Death in Human Melanoma Cells. Cancers (Basel) 2020; 12:cancers12102936. [PMID: 33053749 PMCID: PMC7600613 DOI: 10.3390/cancers12102936] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 10/05/2020] [Accepted: 10/07/2020] [Indexed: 12/11/2022] Open
Abstract
Melanoma is the most prevalent type of skin cancer with high mortality rates. This study demonstrates the in vitro and in vivo anticancer properties of chalcone flavokawain B (FKB) induced ROS-mediated apoptosis and autophagy in human melanoma (human epithelial melanoma cell line A375 and/or human skin lymph node derived melanoma cell line A2058) cells. Cell viability was calculated by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and the expression patterns of various apoptosis, autophagy-associated proteins were determined by Western blot methods. Annexin V was detected by flow cytometry, whereas acidic vesicular organelles (AVOs) and intracellular ROS levels were measured by fluorescence microscopy. The in vivo anticancer properties of FKB were evaluated by xenografting the A375 cells into nude mice. The results convey that FKB inhibited cell viability, B-Raf proto-oncogene, serine/threonine kinase (BRAF)/extracellular signal-regulated kinase (ERK) expression in human melanoma cells. Caspase-3 activation, poly (ADP-ribose) polymerase (PARP) cleavage pathway, and Bcl2 associated X (Bax)/B-cell lymphoma 2 (Bcl-2) dysregulation were involved in the execution of apoptosis. Moreover, FKB-induced autophagy was observed through increased microtubule-associated protein 1A/1B-light chain 3B (LC3-II) accumulation and AVOs formation, which was also associated with an increase in sequestosome 1 (SQSTM1/p62), decreased protein kinase B (AKT)/mammalian target of rapamycin (mTOR) expressions, and dysregulated Beclin-1/Bcl-2 levels. Autophagy inhibitors [3-methyladenine (3-MA)/chloroquine (CQ)] and LC3 silencing suppressed FKB-induced apoptosis by decreasing caspase-3 in melanoma cells. The antioxidant N-acetylcysteine (NAC) diminished FKB-induced apoptotic and autophagic cell death. However, the inhibition of apoptosis decreased FKB-induced autophagy (LC3-I/II). The in vivo study confirmed that FKB inhibited melanoma growth in A375-xenografted nude mice. This study concluded that FKB is critically associated with the execution and generation of ROS-modulated apoptotic and autophagic cell death of melanoma cells. FKB also repressed tumor growth in xenografted nude mice. Therefore, flavokawain B might be a potential anti-tumor agent in human melanoma treatment.
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Affiliation(s)
- You-Cheng Hseu
- Department of Cosmeceutics, College of Pharmacy, China Medical University, Taichung 40402, Taiwan; (Y.-C.H.); (Y.V.G.)
- Department of Health and Nutrition Biotechnology, Asia University, Taichung 41354, Taiwan
- Chinese Medicine Research Center, China Medical University, Taichung 40402, Taiwan
- Research Center of Chinese Herbal Medicine, China Medical University, Taichung 40402, Taiwan
| | - Yu-Chi Chiang
- Institute of Nutrition, College of Biopharmaceutical and Food Sciences, China Medical University, Taichung 40402, Taiwan; (Y.-C.C.); (S.S.)
| | - Yugandhar Vudhya Gowrisankar
- Department of Cosmeceutics, College of Pharmacy, China Medical University, Taichung 40402, Taiwan; (Y.-C.H.); (Y.V.G.)
| | - Kai-Yuan Lin
- Department of Medical Research, Chi Mei Medical Center, Tainan 71004, Taiwan;
- Department of Biotechnology, Chia Nan University of Pharmacy and Science, Tainan 71004, Taiwan
| | - Sheng-Teng Huang
- School of Chinese Medicine, China Medical University, Taichung 40402, Taiwan;
| | - Sirjana Shrestha
- Institute of Nutrition, College of Biopharmaceutical and Food Sciences, China Medical University, Taichung 40402, Taiwan; (Y.-C.C.); (S.S.)
| | - Geng-Ruei Chang
- Department of Veterinary Medicine, National Chiayi University, Chiayi 60054, Taiwan
- Correspondence: (G.-R.C.); (H.-L.Y.); Tel.: +886-4-2205-3366 (ext. 7503) (H.-L.Y.); Fax: +886-4-2206-2891 (H.-L.Y.)
| | - Hsin-Ling Yang
- Institute of Nutrition, College of Biopharmaceutical and Food Sciences, China Medical University, Taichung 40402, Taiwan; (Y.-C.C.); (S.S.)
- Correspondence: (G.-R.C.); (H.-L.Y.); Tel.: +886-4-2205-3366 (ext. 7503) (H.-L.Y.); Fax: +886-4-2206-2891 (H.-L.Y.)
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Ajoolabady A, Aslkhodapasandhokmabad H, Aghanejad A, Zhang Y, Ren J. Mitophagy Receptors and Mediators: Therapeutic Targets in the Management of Cardiovascular Ageing. Ageing Res Rev 2020; 62:101129. [PMID: 32711157 DOI: 10.1016/j.arr.2020.101129] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Revised: 07/10/2020] [Accepted: 07/19/2020] [Indexed: 12/17/2022]
Abstract
Mitophagy serves as a cardinal regulator in the maintenance of mitochondrial integrity, function, and cardiovascular homeostasis, through the fine control and governance of cellular metabolism, ATP production, redox balance, and mitochondrial quality and quantity control. As a unique form of selective autophagy, mitophagy specifically recognizes and engulfs long-lived or damaged (depolarized) mitochondria through formation of the double-membraned intracellular organelles - mitophagosomes, ultimately resulting in lysosomal degradation. Levels of mitophagy are reported to be altered in pathological settings including cardiovascular diseases and biological ageing although the precise nature of mitophagy change in ageing and ageing-associated cardiovascular deterioration remains poorly defined. Ample clinical and experimental evidence has depicted a convincing tie between cardiovascular ageing and altered mitophagy. In particular, ageing perturbs multiple enigmatic various signal machineries governing mitophagy, mitochondrial quality, and mitochondrial function, contributing to ageing-elicited anomalies in the cardiovascular system. This review will update novel regulatory mechanisms of mitophagy especially in the perspective of advanced ageing, and discuss how mitophagy dysregulation may be linked to cardiovascular abnormalities in ageing. We hope to pave the way for development of new therapeutic strategies against the growing health and socieconomical issue of cardiovascular ageing through targeting mitophagy.
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Polyphenols by Generating H 2O 2, Affect Cell Redox Signaling, Inhibit PTPs and Activate Nrf2 Axis for Adaptation and Cell Surviving: In Vitro, In Vivo and Human Health. Antioxidants (Basel) 2020; 9:antiox9090797. [PMID: 32867057 PMCID: PMC7555200 DOI: 10.3390/antiox9090797] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 08/18/2020] [Accepted: 08/19/2020] [Indexed: 12/29/2022] Open
Abstract
Human health benefits from different polyphenols molecules consumption in the diet, derived mainly by their common activities in the gastrointestinal tract and at the level of blood micro-capillary. In the stomach, intestine and colon, polyphenols act as reducing agents preventing lipid peroxidation, generation and absorption of AGEs/ALEs (advanced glycation end products/advanced lipid oxidation end products) and postprandial oxidative stress. The low absorption of polyphenols in blood does not support their activity as antioxidants and their mechanism of activity is not fully understood. The results are from in vitro, animal and human studies, detected by relevant oxidative stress markers. The review carries evidences that polyphenols, by generating H2O2 at nM concentration, exogenous to cells and organs, act as activators of signaling factors increasing cell Eustress. When polyphenols attain high concentration in the blood system, they generate H2O2 at µM concentration, acting as cytotoxic agents and Distress. Pre-treatment of cells or organisms with polyphenols, by generating H2O2 at low levels, inhibits cellular PTPs (protein tyrosine phosphatases), inducing cell signaling through transcription of the Nrf2 (nuclear factor erythroid 2-related factor 2) axis of adaptation and protection to oxidation stress. Polyphenols ingestion at the right amount and time during the meal acts synergistically at the level of the gastrointestinal tract (GIT) and blood system, for keeping the redox homeostasis in our organism and better balancing human health.
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Roos NJ, Aliu D, Bouitbir J, Krähenbühl S. Lapatinib Activates the Kelch-Like ECH-Associated Protein 1-Nuclear Factor Erythroid 2-Related Factor 2 Pathway in HepG2 Cells. Front Pharmacol 2020; 11:944. [PMID: 32694997 PMCID: PMC7339965 DOI: 10.3389/fphar.2020.00944] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Accepted: 06/10/2020] [Indexed: 12/30/2022] Open
Abstract
The receptor tyrosine kinase inhibitor lapatinib, indicated to treat patients with HER2-positive breast cancer in combination with capecitabine, can cause severe hepatotoxicity. Lapatinib is further associated with mitochondrial toxicity and accumulation of reactive oxygen species. The effect of lapatinib on the Kelch-like ECH-associated protein 1 (Keap1)-nuclear factor erythroid 2-related factor 2 (Nrf2) pathway, the major cellular defense pathway against oxidative stress, has so far not been studied in detail. In the present study, we show that lapatinib (2–20 µM) activates the Keap1-Nrf2 pathway in HepG2 cells, a hepatocellular carcinoma-derived cell line, in a concentration-dependent manner upon 24 h of treatment. Lapatinib stabilized the transcription factor Nrf2 at concentrations ≥5 µM and caused its nuclear translocation. Well-established Nrf2 regulated genes (Nqo1, Gsta1, Gclc, and Gclm) were upregulated at lapatinib concentrations ≥10 µM. Furthermore, cellular and mitochondrial glutathione (GSH) levels increased starting at 10 µM lapatinib. As a marker of oxidative stress, cellular GSSG significantly increased at 10 and 20 µM lapatinib. Furthermore, the gene expression of mitochondrial Glrx2 and SOD2 were increased upon lapatinib treatment, which was also observed for the mitochondrial SOD2 protein content. In conclusion, lapatinib treatment for 24 h activated the Keap1-Nrf2 pathway in HepG2 cells starting at 10 μM, which is a clinically relevant concentration. As a consequence, treatment with lapatinib increased the mRNA and protein expression of antioxidative and other cytoprotective genes and induced GSH synthesis, but these measures could not completely block the oxidative stress associated with lapatinib.
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Affiliation(s)
- Noëmi Johanna Roos
- Division of Clinical Pharmacology & Toxicology, University Hospital, Basel, Switzerland.,Department of Biomedicine, University of Basel, Basel, Switzerland.,Swiss Centre for Applied Human Toxicology (SCAHT), Basel, Switzerland
| | - Diell Aliu
- Division of Clinical Pharmacology & Toxicology, University Hospital, Basel, Switzerland.,Department of Biomedicine, University of Basel, Basel, Switzerland
| | - Jamal Bouitbir
- Division of Clinical Pharmacology & Toxicology, University Hospital, Basel, Switzerland.,Department of Biomedicine, University of Basel, Basel, Switzerland.,Swiss Centre for Applied Human Toxicology (SCAHT), Basel, Switzerland
| | - Stephan Krähenbühl
- Division of Clinical Pharmacology & Toxicology, University Hospital, Basel, Switzerland.,Department of Biomedicine, University of Basel, Basel, Switzerland.,Swiss Centre for Applied Human Toxicology (SCAHT), Basel, Switzerland
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Calabrese EJ, Tsatsakis A, Agathokleous E, Giordano J, Calabrese V. Does Green Tea Induce Hormesis? Dose Response 2020; 18:1559325820936170. [PMID: 32728352 PMCID: PMC7364811 DOI: 10.1177/1559325820936170] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 04/28/2020] [Accepted: 05/21/2020] [Indexed: 12/20/2022] Open
Abstract
Green tea, and its principal constituent (-)-epigallocatechin-3-gallate (EGCG), are commonly shown to induce biphasic concentration/dose responses in a broad range of cell types, including non-tumor cells, and tumor cell lines. The most active area of research dealt with an assessment of neural cells with application to neurodegenerative diseases such as Parkinson's disease and Alzheimer's disease cell models, often using preconditioning experimental protocols. The general findings demonstrate EGCG-induced hormetic effects resulting in an enhanced acquired resilience within an adaptive and temporally dependent homeodynamic framework. The biphasic dose responses displayed the typical quantitative features of the hormetic dose response with respect to the amplitude and width of the stimulatory response. These findings provide further evidence for the general occurrence of hormetic dose responses with such responses being independent of the biological model, end point, inducing agent, and mechanism. The biphasic nature of these responses has important implications since it suggests optimal dose ranges for end points of public health and therapeutic applications. These findings indicate the need to assess the entire dose-response continuum in order to better define the nature of the dose response, especially in the low-dose zone where such exposures are common in human populations.
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Affiliation(s)
- Edward J Calabrese
- Department of Environmental Health Sciences, Morrill Science Center I, University of Massachusetts, Amherst, MA, USA
| | - Aristidis Tsatsakis
- Centre of Toxicology Science and Research, University of Crete, School of Medicine, Crete, Greece
| | - Evgenios Agathokleous
- Institute of Ecology, School of Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing, China
| | - James Giordano
- Department of Neurology and Biochemistry, Georgetown University Medical Center Washington, DC, USA
| | - Vittorio Calabrese
- Department of Biomedical and Biotechnological Sciences, School of Medicine University of Catania, Catania, Italy
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Suppression of LPS-Induced Inflammation by Chalcone Flavokawain A through Activation of Nrf2/ARE-Mediated Antioxidant Genes and Inhibition of ROS/NF κB Signaling Pathways in Primary Splenocytes. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:3476212. [PMID: 32617135 PMCID: PMC7306849 DOI: 10.1155/2020/3476212] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 05/02/2020] [Accepted: 05/18/2020] [Indexed: 01/06/2023]
Abstract
Oxidative stress is an important contributing factor for inflammation. Piper methysticum, also known as Kava-kava, is a shrub whose root extract has been consumed as a drink by the pacific islanders for a long time. Flavokawain A (FKA) is a novel chalcone derived from the kava plant that is known to have medicinal properties. This study was aimed at demonstrating the antioxidant molecular mechanisms mediated by FKA on lipopolysaccharide- (LPS-) induced inflammation in BALB/c mouse-derived primary splenocytes. In vitro data show that the nontoxic concentrations of FKA (2-30 μM) significantly suppressed the proinflammatory cytokine (TNF-α, IL-1β, and IL-6) release but induced the secretion of interleukin-10 (IL-10), an anti-inflammatory cytokine. It was also shown that FKA pretreatment significantly downregulated the LPS-induced ROS production and blocked the activation of the NFκB (p65) pathway leading to the significant suppression of iNOS, COX-2, TNF-α, and IL-1β protein expressions. Notably, FKA favored the nuclear translocation of Nrf2 leading to the downstream expression of antioxidant proteins HO-1, NQO-1, and γ-GCLC via the Nrf2/ARE signaling pathway signifying the FKA's potent antioxidant mechanism in these cells. Supporting the in vitro data, the ex vivo data obtained from primary splenocytes derived from the FKA-preadministered BALB/c mice (orally) show that FKA significantly suppressed the proinflammatory cytokine (TNF-α, IL-1β, and IL-6) secretion in control-, LPS-, or Concanavalin A- (Con A-) stimulated cells. A significant decrease in the ratios of pro- and anti-inflammatory cytokines (IL-6/IL-10; TNF-α/IL-10) showed that FKA possesses strong anti-inflammatory properties. Furthermore, BALB/c mice induced with experimental pancreatitis using cholecystokinin- (CCK-) 8 showed decreased serum lipase levels due to FKA pretreatment. We conclude that with its potent antioxidant and anti-inflammatory properties, chalcone flavokawain A could be a novel therapeutic agent in the treatment of inflammation-associated diseases.
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Kolbasina NA, Gureev AP, Serzhantova OV, Mikhailov AA, Moshurov IP, Starkov AA, Popov VN. Lung cancer increases H 2O 2 concentration in the exhaled breath condensate, extent of mtDNA damage, and mtDNA copy number in buccal mucosa. Heliyon 2020; 6:e04303. [PMID: 32637695 PMCID: PMC7327746 DOI: 10.1016/j.heliyon.2020.e04303] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 11/14/2019] [Accepted: 06/22/2020] [Indexed: 01/29/2023] Open
Abstract
We have shown that the H2O2 concentration in exhaled breath condensate (EBC) in lung cancer patients increases significantly compared to the EBC of healthy people and revealed the correlation between the H2O2 level in the EBC and amount of mtDNA damage in buccal mucosa cells. The H2O2 hyper-production may trigger mitochondrial biogenesis, thereby resulting in an increase in mtDNA copy number. However, we did not observe a significant difference in the studied parameters between smokers and non-smokers. Overall, our data suggest that H2O2 concentration in the EBC, the extent of mtDNA damage, and mtDNA copy number in buccal mucosa could be potential as an early diagnostic marker of lung cancer.
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Affiliation(s)
- Natalya A. Kolbasina
- Department of Genetics, Cytology and Bioengineering, Voronezh State University, Voronezh, Russia
| | - Artem P. Gureev
- Department of Genetics, Cytology and Bioengineering, Voronezh State University, Voronezh, Russia
| | - Olga V. Serzhantova
- Department of Genetics, Cytology and Bioengineering, Voronezh State University, Voronezh, Russia
- Voronezh Regional Clinical Oncological Dispensary, Voronezh, Russia
| | - Andrey A. Mikhailov
- Department of Genetics, Cytology and Bioengineering, Voronezh State University, Voronezh, Russia
- Voronezh Regional Clinical Oncological Dispensary, Voronezh, Russia
| | - Ivan P. Moshurov
- Voronezh Regional Clinical Oncological Dispensary, Voronezh, Russia
| | - Anatoly A. Starkov
- Brain and Mind Research Institute, Weill Medical College of Cornell University, New York, NY, USA
| | - Vasily N. Popov
- Department of Genetics, Cytology and Bioengineering, Voronezh State University, Voronezh, Russia
- Voronezh State University of Engineering Technologies, Voronezh, Russia
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The uricosuric benzbromarone disturbs the mitochondrial redox homeostasis and activates the NRF2 signaling pathway in HepG2 cells. Free Radic Biol Med 2020; 152:216-226. [PMID: 32198009 DOI: 10.1016/j.freeradbiomed.2020.03.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 03/08/2020] [Accepted: 03/12/2020] [Indexed: 11/25/2022]
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Gureev AP, Popov VN, Starkov AA. Crosstalk between the mTOR and Nrf2/ARE signaling pathways as a target in the improvement of long-term potentiation. Exp Neurol 2020; 328:113285. [PMID: 32165256 DOI: 10.1016/j.expneurol.2020.113285] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Revised: 02/22/2020] [Accepted: 03/08/2020] [Indexed: 12/15/2022]
Abstract
In recent years, a significant progress was made in understanding molecular mechanisms of long-term memory. Long-term memory formation requires strengthening of neuronal connections (LTP, long-term potentiation) associated with structural rearrangement of neurons. The key role in the synthesis of proteins essential for these rearrangements belong to mTOR (mammalian target of rapamycin) complexes and signaling pathways involved in mTOR regulation. Suppression of mTOR activity may impair synaptic plasticity and long-term memory, while mTOR activation inhibits autophagy, thereby potentiating amyloidosis and development of Alzheimer's disease (AD) accompanied by irreversible memory loss. Because of this, suppression/inhibition of mTOR might have unpredictable consequences on memory. The Nrf2/ARE signaling pathway affects almost all mitochondrial processes. The activation of this pathway improves memory and exhibits therapeutic effect in AD. In this review, we discuss the crosstalk between the Nrf2/ARE signaling and mTOR in the maintenance of synaptic plasticity. Nrf2 pathway can be activated by pharmacological agents and by changes in mitochondria functioning accompanying various neuronal dysfunctions.
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Affiliation(s)
- Artem P Gureev
- Department of Genetics, Cytology and Bioengineering, Voronezh State University, Voronezh, Russia
| | - Vasily N Popov
- Department of Genetics, Cytology and Bioengineering, Voronezh State University, Voronezh, Russia; Voronezh State University of Engineering Technologies, Voronezh, Russia
| | - Anatoly A Starkov
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY, USA.
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Barraza-Garza G, Pérez-León JA, Castillo-Michel H, de la Rosa LA, Martinez-Martinez A, Cotte M, Alvarez-Parrilla E. Antioxidant effect of phenolic compounds (PC) at different concentrations in IEC-6 cells: A spectroscopic analysis. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 227:117570. [PMID: 31669938 DOI: 10.1016/j.saa.2019.117570] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 09/24/2019] [Accepted: 09/25/2019] [Indexed: 06/10/2023]
Abstract
Phenolic compounds (PC) have been proposed as natural antioxidant agents that protect cells against oxidative stress-related diseases. Nonetheless, their low bioavailability forecasts controversy about mechanisms on their in vivo scavenging activity against reactive oxygen species (ROS). It has been proposed that PC reduce directly ROS concentration. An alternative or complementary action of PC could be the activation of the cell's antioxidant pathway, involving the regulation of gene expression, like that initiated by the Nrf2 transcription factor. To date there is not enough experimental data to support or discard this possibility. In the present study, we evaluated the use of several PC to prevent peroxidation of macromolecules and to elicit the activation of the Nrf2 transcription factor in H2O2-stresed IEC-6 enterocytic cell line. Synchrotron microspectroscopy demonstrated that PC compounds protected proteins, lipids and nucleic acids against oxidation induced by H2O2. Immunofluorescence results showed that treatment with quercetin (Qc), catechin (Cat) and capsaicin (Cap) induced the translocation of Nrf2 into the nucleus, at the same level as did H2O2 treatment, thus mimicking the action of the endogenous cell response to peroxidation. Even though the detailed mechanism still needs to be elucidated, we demonstrated the activation of Nrf2 by PCs in response to oxidative stress.
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Affiliation(s)
- G Barraza-Garza
- Departamento de Ciencias Químico Biológicas, Instituto de Ciencias Biomédicas, Universidad Autónoma de Ciudad Juárez, PRONAF y Estocolmo s/n, 32310, Juárez, Mexico
| | - J A Pérez-León
- Departamento de Ciencias Químico Biológicas, Instituto de Ciencias Biomédicas, Universidad Autónoma de Ciudad Juárez, PRONAF y Estocolmo s/n, 32310, Juárez, Mexico
| | - H Castillo-Michel
- X-ray and Infrared Microspectroscopy Beamline ID21, European Synchrotron Radiation Facility, 71 avenue des Martyrs, 38000, Grenoble, France
| | - L A de la Rosa
- Departamento de Ciencias Químico Biológicas, Instituto de Ciencias Biomédicas, Universidad Autónoma de Ciudad Juárez, PRONAF y Estocolmo s/n, 32310, Juárez, Mexico
| | - A Martinez-Martinez
- Departamento de Ciencias Químico Biológicas, Instituto de Ciencias Biomédicas, Universidad Autónoma de Ciudad Juárez, PRONAF y Estocolmo s/n, 32310, Juárez, Mexico
| | - M Cotte
- X-ray and Infrared Microspectroscopy Beamline ID21, European Synchrotron Radiation Facility, 71 avenue des Martyrs, 38000, Grenoble, France
| | - E Alvarez-Parrilla
- Departamento de Ciencias Químico Biológicas, Instituto de Ciencias Biomédicas, Universidad Autónoma de Ciudad Juárez, PRONAF y Estocolmo s/n, 32310, Juárez, Mexico.
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Gureev AP, Shaforostova EA, Laver DA, Khorolskaya VG, Syromyatnikov MY, Popov VN. Methylene blue elicits non-genotoxic H 2O 2 production and protects brain mitochondria from rotenone toxicity. J Appl Biomed 2019; 17:107-114. [DOI: 10.32725/jab.2019.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 05/14/2019] [Indexed: 02/07/2023] Open
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Rusu ME, Simedrea R, Gheldiu AM, Mocan A, Vlase L, Popa DS, Ferreira IC. Benefits of tree nut consumption on aging and age-related diseases: Mechanisms of actions. Trends Food Sci Technol 2019. [DOI: 10.1016/j.tifs.2019.03.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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49
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Zhou MX, Li GH, Wu XY, Sun L, Li YR, Yang WJ, Ren DM, Wang XN, Xiang L, Lou HX, Shen T. (2S)-5,6,7,3′,4′-pentamethoxyflavanone, a citrus polymethoxyflavone ameliorates arsenic- and cigarette smoke extract-induced cytotoxicity via activating Nrf2-mediated defense system. J Funct Foods 2019. [DOI: 10.1016/j.jff.2019.01.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
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50
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Resveratrol and Its Human Metabolites-Effects on Metabolic Health and Obesity. Nutrients 2019; 11:nu11010143. [PMID: 30641865 PMCID: PMC6357128 DOI: 10.3390/nu11010143] [Citation(s) in RCA: 162] [Impact Index Per Article: 32.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 01/06/2019] [Accepted: 01/08/2019] [Indexed: 01/05/2023] Open
Abstract
Resveratrol is one of the most widely studied polyphenols and it has been assigned a plethora of metabolic effects with potential health benefits. Given its low bioavailability and extensive metabolism, clinical studies using resveratrol have not always replicated in vitro observations. In this review, we discuss human metabolism and biotransformation of resveratrol, and reported molecular mechanisms of action, within the context of metabolic health and obesity. Resveratrol has been described as mimicking caloric restriction, leading to improved exercise performance and insulin sensitivity (increasing energy expenditure), as well as having a body fat-lowering effect by inhibiting adipogenesis, and increasing lipid mobilization in adipose tissue. These multi-organ effects place resveratrol as an anti-obesity bioactive of potential therapeutic use.
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