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Wang X, Song F. The neurotoxicity of organophosphorus flame retardant tris (1,3-dichloro-2-propyl) phosphate (TDCPP): Main effects and its underlying mechanisms. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 346:123569. [PMID: 38369091 DOI: 10.1016/j.envpol.2024.123569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 02/04/2024] [Accepted: 02/12/2024] [Indexed: 02/20/2024]
Abstract
As a major alternative to the brominated flame retardants, the production and use of organophosphorus flame retardants (OPFRs) are increasing. And tris (1,3-dichloro-2-propyl) phosphate (TDCPP), one of the most widely used OPFRs, is now commonly found in a variety of products, such as building materials, furniture, bedding, electronic equipment, and baby products. TDCPP does not readily degrade in the water and tends to accumulate continuously in the environment. It has been detected in indoor dust, air, water, soil, and human samples. Considered as an emerging environmental pollutant, increasing studies have demonstrated its adverse effects on environmental organisms and human beings, with the nerve system identified as a sensitive target organ. This paper systematically summarized the progress of TDCPP application and its current exposure in the environment, with a focus on its neurotoxicity. In particular, we highlighted that TDCPP can be neurotoxic (including neurodevelopmentally toxic) to humans and animals, primarily through oxidative stress, neuroinflammation, mitochondrial damage, and epigenetic regulation. Additionally, this paper provided an outlook for further studies on neurotoxicity of TDCPP, as well as offered scientific evidence and clues for rational application of TDCPP in daily life and the prevention and control of its environmental impact in the future.
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Affiliation(s)
- Xiaoxiao Wang
- Department of Toxicology and Nutrition, School of Public Health, Cheeloo College of Medicine, Shandong University, 44 Wenhuaxi Road, Jinan, Shandong, 250012, PR China
| | - Fuyong Song
- Department of Toxicology and Nutrition, School of Public Health, Cheeloo College of Medicine, Shandong University, 44 Wenhuaxi Road, Jinan, Shandong, 250012, PR China.
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2
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Cosentino A, Agafonova A, Modafferi S, Trovato Salinaro A, Scuto M, Maiolino L, Fritsch T, Calabrese EJ, Lupo G, Anfuso CD, Calabrese V. Blood-Labyrinth Barrier in Health and Diseases: Effect of Hormetic Nutrients. Antioxid Redox Signal 2024; 40:542-563. [PMID: 37565276 DOI: 10.1089/ars.2023.0251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/12/2023]
Abstract
Significance: The stria vascularis, located in the inner ear, consists of three layers, one of which is the blood-labyrinth barrier (BLB). It is formed by endothelial cells, sealed together to prevent the passage of toxic substances from the blood to the inner ear, by pericytes and perivascular-resident macrophage-like melanocyte. Recent Advances: There are various causes that lead to hearing loss, and among these are noise-induced and autoimmune hearing loss, ear disorders related to ototoxic medication, Ménière's disease, and age-related hearing loss. For all of these, major therapeutic interventions include drug-loaded nanoparticles, via intratympanic or intracochlear delivery. Critical Issues: Since many pathologies associated with hearing loss are characterized by a weakening of the BLB, in this review, the molecular mechanisms underlying the response to damage of BLB cellular components have been discussed. In addition, insight into the role of hormetic nutrients against hearing loss pathology is proposed. Future Directions: BLB cellular components of neurovascular cochlear unit play important physiological roles, owing to their impermeable function against all ototoxic substances that can induce damage. Studies are needed to investigate the cross talk occurring between these cellular components to exploit their possible role as novel targets for therapeutic interventions that may unravel future path based on the use of hormetic nutrients. Antioxid. Redox Signal. 40, 542-563.
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Affiliation(s)
- Alessia Cosentino
- Section of Medical Biochemistry, Department of Biomedical and Biotechnological Sciences, School of Medicine; Surgical and Advanced Technologies "G. F. Ingrassia"; University of Catania, Catania, Italy
| | - Aleksandra Agafonova
- Section of Medical Biochemistry, Department of Biomedical and Biotechnological Sciences, School of Medicine; Surgical and Advanced Technologies "G. F. Ingrassia"; University of Catania, Catania, Italy
| | - Sergio Modafferi
- Section of Medical Biochemistry, Department of Biomedical and Biotechnological Sciences, School of Medicine; Surgical and Advanced Technologies "G. F. Ingrassia"; University of Catania, Catania, Italy
| | - Angela Trovato Salinaro
- Section of Medical Biochemistry, Department of Biomedical and Biotechnological Sciences, School of Medicine; Surgical and Advanced Technologies "G. F. Ingrassia"; University of Catania, Catania, Italy
| | - Maria Scuto
- Section of Medical Biochemistry, Department of Biomedical and Biotechnological Sciences, School of Medicine; Surgical and Advanced Technologies "G. F. Ingrassia"; University of Catania, Catania, Italy
| | - Luigi Maiolino
- Department of Medical, Surgical and Advanced Technologies "G. F. Ingrassia"; University of Catania, Catania, Italy
| | | | - Edward J Calabrese
- Department of Environmental Health, School of Public Health and Health Sciences, University of Massachusetts, Amherst, Massachusetts, USA
| | - Gabriella Lupo
- Section of Medical Biochemistry, Department of Biomedical and Biotechnological Sciences, School of Medicine; Surgical and Advanced Technologies "G. F. Ingrassia"; University of Catania, Catania, Italy
| | - Carmelina Daniela Anfuso
- Section of Medical Biochemistry, Department of Biomedical and Biotechnological Sciences, School of Medicine; Surgical and Advanced Technologies "G. F. Ingrassia"; University of Catania, Catania, Italy
| | - Vittorio Calabrese
- Section of Medical Biochemistry, Department of Biomedical and Biotechnological Sciences, School of Medicine; Surgical and Advanced Technologies "G. F. Ingrassia"; University of Catania, Catania, Italy
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3
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Gould RL, Craig SW, McClatchy S, Churchill GA, Pazdro R. Genetic mapping of renal glutathione suggests a novel regulatory locus on the murine X chromosome and overlap with hepatic glutathione regulation. Free Radic Biol Med 2021; 174:28-39. [PMID: 34324982 PMCID: PMC8597656 DOI: 10.1016/j.freeradbiomed.2021.07.035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 07/14/2021] [Accepted: 07/25/2021] [Indexed: 11/29/2022]
Abstract
Glutathione (GSH) is a critical cellular antioxidant that protects against byproducts of aerobic metabolism and other reactive electrophiles to prevent oxidative stress and cell death. Proper maintenance of its reduced form, GSH, in excess of its oxidized form, GSSG, prevents oxidative stress in the kidney and protects against the development of chronic kidney disease. Evidence has indicated that renal concentrations of GSH and GSSG, as well as their ratio GSH/GSSG, are moderately heritable, and past research has identified polymorphisms and candidate genes associated with these phenotypes in mice. Yet those discoveries were made with in silico mapping methods that are prone to false positives and power limitations, so the true loci and candidate genes that control renal glutathione remain unknown. The present study utilized high-resolution gene mapping with the Diversity Outbred mouse stock to identify causal loci underlying variation in renal GSH levels and redox status. Mapping output identified a suggestive locus associated with renal GSH on murine chromosome X at 51.602 Mbp, and bioinformatic analyses identified apoptosis-inducing factor mitochondria-associated 1 (Aifm1) as the most plausible candidate. Then, mapping outputs were compiled and compared against the genetic architecture of the hepatic GSH system, and we discovered a locus on murine chromosome 14 that overlaps between hepatic GSH concentrations and renal GSH redox potential. Overall, the results support our previously proposed model that the GSH redox system is regulated by both global and tissue-specific loci, vastly improving our understanding of GSH and its regulation and proposing new candidate genes for future mechanistic studies.
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Affiliation(s)
- Rebecca L Gould
- Department of Nutritional Sciences, University of Georgia, 305 Sanford Drive, Athens, GA, 30602, USA
| | - Steven W Craig
- Department of Nutritional Sciences, University of Georgia, 305 Sanford Drive, Athens, GA, 30602, USA
| | - Susan McClatchy
- The Jackson Laboratory, 600 Main Street, Bar Harbor, ME, 04609, USA
| | - Gary A Churchill
- The Jackson Laboratory, 600 Main Street, Bar Harbor, ME, 04609, USA
| | - Robert Pazdro
- Department of Nutritional Sciences, University of Georgia, 305 Sanford Drive, Athens, GA, 30602, USA.
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Zhao Y, Wang T, Li P, Chen J, Nepovimova E, Long M, Wu W, Kuca K. Bacillus amyloliquefaciens B10 can alleviate aflatoxin B1-induced kidney oxidative stress and apoptosis in mice. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 218:112286. [PMID: 33933810 DOI: 10.1016/j.ecoenv.2021.112286] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Revised: 04/10/2021] [Accepted: 04/22/2021] [Indexed: 06/12/2023]
Abstract
Aflatoxin B1(AFB1) widely exists in food and feed, which seriously endangers human and animal health. How to detoxify AFB1 is a research hotspot at present. This study attempts to use the Bacillus amyloliquefaciens B10, one of probiotics strain as the research object to ascertain whether it can alleviate the kidney injury induced by AFB1 in mice and its mechanism. Fifty-six mice were divided into four groups (control, AFB1, AFB1 + B10, and B10). The mice that received intragastric administration for 28 days were euthanised, and serum was collected for biochemical index detection with fresh kidney tissue taken for HE staining, TUNEL detection, and protein expression detection. Our results showed that the biochemical indices changed, significant pathological changes appeared, the number of apoptotic cells increased in the kidney tissue of the AFB1 group mice; the protein expressions of Nrf2, HO-1,AKT, P-AKT, and Bcl-2 in the AFB1 group were significantly decreased; the protein expressions of Keap-1, PTEN, Bax, Caspase-9, and Caspase-3 were significantly increased. After B. amyloliquefaciens B10 co-treatment, compared with the AFB1 group, the biochemical indices, pathological changes, and protein expressions were significantly reversed. The results indicated that B. amyloliquefaciens B10 can alleviate AFB1-induced kidney injury in mice.
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Affiliation(s)
- Yeqi Zhao
- College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China
| | - Tiancheng Wang
- College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China
| | - Peng Li
- College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China
| | - Jia Chen
- College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China
| | - Eugenie Nepovimova
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, 50003 Hradec Kralove, Czech Republic
| | - Miao Long
- College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China.
| | - Wenda Wu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China; Department of Chemistry, Faculty of Science, University of Hradec Kralove, 50003 Hradec Kralove, Czech Republic.
| | - Kamil Kuca
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, 50003 Hradec Kralove, Czech Republic.
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Costanzini A, Sgarbi G, Maresca A, Del Dotto V, Solaini G, Baracca A. Mitochondrial Mass Assessment in a Selected Cell Line under Different Metabolic Conditions. Cells 2019; 8:cells8111454. [PMID: 31752092 PMCID: PMC6912592 DOI: 10.3390/cells8111454] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 09/27/2019] [Accepted: 11/14/2019] [Indexed: 01/14/2023] Open
Abstract
Changes of quantity and/or morphology of cell mitochondria are often associated with metabolic modulation, pathology, and apoptosis. Exogenous fluorescent probes used to investigate changes in mitochondrial content and dynamics are strongly dependent, for their internalization, on the mitochondrial membrane potential and composition, thus limiting the reliability of measurements. To overcome this limitation, genetically encoded recombinant fluorescent proteins, targeted to different cellular districts, were used as reporters. Here, we explored the potential use of mitochondrially targeted red fluorescent probe (mtRFP) to quantify, by flow cytometry, mitochondrial mass changes in cells exposed to different experimental conditions. We first demonstrated that the mtRFP fluorescence intensity is stable during cell culture and it is related with the citrate synthase activity, an established marker of the mitochondrial mass. Incidentally, the expression of mtRFP inside mitochondria did not alter the oxygen consumption rate under both state 3 and 4 respiration conditions. In addition, using this method, we showed for the first time that different inducers of mitochondrial mass change, such as hypoxia exposure or resveratrol treatment of cells, could be consistently detected. We suggest that transfection and selection of stable clones expressing mtRFP is a reliable method to monitor mitochondrial mass changes, particularly when pathophysiological or experimental conditions change ΔΨm, as it occurs during mitochondrial uncoupling or hypoxia/anoxia conditions.
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Affiliation(s)
- Anna Costanzini
- Laboratory of Biochemistry and Mitochondrial Pathophysiology, Department of Biomedical and Neuromotor Sciences, University of Bologna, 40126 Bologna, Italy; (A.C.); (G.S.)
- Department of Medical Sciences, University of Ferrara, 44121 Ferrara, Italy
| | - Gianluca Sgarbi
- Laboratory of Biochemistry and Mitochondrial Pathophysiology, Department of Biomedical and Neuromotor Sciences, University of Bologna, 40126 Bologna, Italy; (A.C.); (G.S.)
| | - Alessandra Maresca
- UOC Clinica Neurologica, IRCCS Istituto delle Scienze Neurologiche di Bologna, 40126 Bologna, Italy;
| | - Valentina Del Dotto
- Unit of Neurology, Department of Biomedical and Neuromotor Sciences, University of Bologna, 40139 Bologna, Italy;
| | - Giancarlo Solaini
- Laboratory of Biochemistry and Mitochondrial Pathophysiology, Department of Biomedical and Neuromotor Sciences, University of Bologna, 40126 Bologna, Italy; (A.C.); (G.S.)
- Correspondence: (G.S.); (A.B.); Tel.: +39-051-2091215 (G.S.); Tel.: +39-051-2091244 (A.B.)
| | - Alessandra Baracca
- Laboratory of Biochemistry and Mitochondrial Pathophysiology, Department of Biomedical and Neuromotor Sciences, University of Bologna, 40126 Bologna, Italy; (A.C.); (G.S.)
- Correspondence: (G.S.); (A.B.); Tel.: +39-051-2091215 (G.S.); Tel.: +39-051-2091244 (A.B.)
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6
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Estrada-Ortiz N, Lopez-Gonzales E, Woods B, Stürup S, de Graaf IAM, Groothuis GMM, Casini A. Ex vivo toxicological evaluation of experimental anticancer gold(i) complexes with lansoprazole-type ligands. Toxicol Res (Camb) 2019; 8:885-895. [PMID: 32190293 PMCID: PMC7067241 DOI: 10.1039/c9tx00149b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 09/19/2019] [Indexed: 12/13/2022] Open
Abstract
Gold-based compounds are of great interest in the field of medicinal chemistry as novel therapeutic (anticancer) agents due to their peculiar reactivity and mechanisms of action with respect to organic drugs. Despite their promising pharmacological properties, the possible toxic effects of gold compounds need to be carefully evaluated in order to optimize their design and applicability. This study reports on the potential toxicity of three experimental gold-based anticancer compounds featuring lansoprazole ligands (1-3) studied in an ex vivo model, using rat precision cut kidney and liver slices (PCKS and PCLS, respectively). The results showed a different toxicity profile for the tested compounds, with the neutral complex 2 being the least toxic, even less toxic than cisplatin, followed by the cationic complex 1. The dinuclear cationic gold complex 3 was the most toxic in both liver and kidney slices. This result correlated with the metal uptake of the different compounds assessed by ICP-MS, where complex 3 showed the highest accumulation of gold in liver and kidney slices. Interestingly compound 1 showed the highest selectivity towards cancer cells compared to the healthy tissues. Histomorphology evaluation showed a similar pattern for all three Au(i) complexes, where the distal tubular cells suffered the most extensive damage, in contrast to the damage in the proximal tubules induced by cisplatin. The binding of representative gold compounds with the model ubiquitin was also studied by ESI-MS, showing that after 24 h incubation only 'naked' Au ions were bound to the protein following ligands' loss. The mRNA expression of stress response genes appeared to be similar for both evaluated organs, suggesting oxidative stress as the possible mechanism of toxicity. The obtained results open new perspectives towards the design and testing of bifunctional gold complexes with chemotherapeutic applications.
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Affiliation(s)
- Natalia Estrada-Ortiz
- Dept. Pharmacokinetics , Toxicology and Targeting , Groningen Research Institute of Pharmacy , University of Groningen , A. Deusinglaan 1 , 9713AV Groningen , The Netherlands . ;
| | - Elena Lopez-Gonzales
- Dept. Pharmacokinetics , Toxicology and Targeting , Groningen Research Institute of Pharmacy , University of Groningen , A. Deusinglaan 1 , 9713AV Groningen , The Netherlands . ;
| | - Ben Woods
- School of Chemistry , Cardiff University , Main Building , Park Place , CF10 3AT Cardiff , UK
| | - Stefan Stürup
- Dept. of Pharmacy , University of Copenhagen , Universitetsparken 2 , 2100 Copenhagen , Denmark
| | - Inge A M de Graaf
- Dept. Pharmacokinetics , Toxicology and Targeting , Groningen Research Institute of Pharmacy , University of Groningen , A. Deusinglaan 1 , 9713AV Groningen , The Netherlands . ;
| | - Geny M M Groothuis
- Dept. Pharmacokinetics , Toxicology and Targeting , Groningen Research Institute of Pharmacy , University of Groningen , A. Deusinglaan 1 , 9713AV Groningen , The Netherlands . ;
| | - Angela Casini
- Dept. Pharmacokinetics , Toxicology and Targeting , Groningen Research Institute of Pharmacy , University of Groningen , A. Deusinglaan 1 , 9713AV Groningen , The Netherlands . ;
- School of Chemistry , Cardiff University , Main Building , Park Place , CF10 3AT Cardiff , UK
- Department of Chemistry , Technical University of Munich , Lichtenbergstr. 4 , 85748 Garching b. München , Germany
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Jung ME, Mallet RT. Intermittent hypoxia training: Powerful, non-invasive cerebroprotection against ethanol withdrawal excitotoxicity. Respir Physiol Neurobiol 2018; 256:67-78. [PMID: 28811138 PMCID: PMC5825251 DOI: 10.1016/j.resp.2017.08.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2017] [Revised: 07/24/2017] [Accepted: 08/08/2017] [Indexed: 12/12/2022]
Abstract
Ethanol intoxication and withdrawal exact a devastating toll on the central nervous system. Abrupt ethanol withdrawal provokes massive release of the excitatory neurotransmitter glutamate, which over-activates its postsynaptic receptors, causing intense Ca2+ loading, p38 mitogen activated protein kinase activation and oxidative stress, culminating in ATP depletion, mitochondrial injury, amyloid β deposition and neuronal death. Collectively, these mechanisms produce neurocognitive and sensorimotor dysfunction that discourages continued abstinence. Although the brain is heavily dependent on blood-borne O2 to sustain its aerobic ATP production, brief, cyclic episodes of moderate hypoxia and reoxygenation, when judiciously applied over the course of days or weeks, evoke adaptations that protect the brain from ethanol withdrawal-induced glutamate excitotoxicity, mitochondrial damage, oxidative stress and amyloid β accumulation. This review summarizes evidence from ongoing preclinical research that demonstrates intermittent hypoxia training to be a potentially powerful yet non-invasive intervention capable of affording robust, sustained neuroprotection during ethanol withdrawal.
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Affiliation(s)
- Marianna E Jung
- Center for Neuroscience Discovery, University of North Texas Health Science Center, 3500 Camp Bowie Boulevard, Fort Worth, TX 76107-2699, USA.
| | - Robert T Mallet
- Institute for Cardiovascular and Metabolic Diseases, University of North Texas Health Science Center, 3500 Camp Bowie Boulevard, Fort Worth, TX 76107-2699, USA.
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8
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Curcumin confers hepatoprotection against AFB1-induced toxicity via activating autophagy and ameliorating inflammation involving Nrf2/HO-1 signaling pathway. Mol Biol Rep 2018; 45:1775-1785. [DOI: 10.1007/s11033-018-4323-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Accepted: 08/20/2018] [Indexed: 01/06/2023]
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9
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Sahin K, Orhan C, Akdemir F, Tuzcu M, Sahin N, Yılmaz I, Juturu V. β-Cryptoxanthin ameliorates metabolic risk factors by regulating NF-κB and Nrf2 pathways in insulin resistance induced by high-fat diet in rodents. Food Chem Toxicol 2017; 107:270-279. [PMID: 28689061 DOI: 10.1016/j.fct.2017.07.008] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Revised: 07/03/2017] [Accepted: 07/04/2017] [Indexed: 12/18/2022]
Abstract
The aim of this experiment was to determine the effects of β-cryptoxanthin (BCX) on the cardiometabolic health risk factors and NF-κB and Nrf2 pathway in insulin resistance induced by high-fat diet (HFD) in rodents. Twenty-eight Sprague-Dawley rats were allocated into four groups: (1) Control, rats fed a standard diet for 12 weeks; (2) BCX, rats fed a standard diet and supplemented with BCX (2.5 mg/kg BW) for 12 weeks; (3) HFD, rats fed a HFD for 12 weeks, (4) HFD + BCX, rats fed a HFD and supplemented with BCX for 12 weeks. BCX reduced cardio-metabolic health markers and decreased inflammatory markers (P < 0.001). Rats fed a HFD had the lower total antioxidant capacity and antioxidant enzymes activities and higher MDA concentration than control rats (P < 0.001 for all). Comparing with the HFD group, BCX in combination with HFD inhibited liver NF-κB and TNF-α expression by 22% and 14% and enhanced liver Nrf2, HO-1, PPAR-α, and p-IRS-1 by 1.43, 1.41, 3.53, and 1.33 fold, respectively (P < 0.001). Furthermore, in adipose tissue, BCX up-regulated Nrf2, HO-1, PPAR-α, and p-IRS-1 expression, whereas, down-regulated NF-κB and TNF-α expression. In conclusion, BCX decreased visceral fat and cardiometabolic health risk factors through modulating expressions of nuclear transcription factors.
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Affiliation(s)
- Kazim Sahin
- Firat University, Department of Animal Nutrition, Elazig, Turkey.
| | - Cemal Orhan
- Firat University, Department of Animal Nutrition, Elazig, Turkey
| | - Fatih Akdemir
- Department of Nutrition, Faculty of Fisheries, Inonu University, Malatya, Turkey
| | - Mehmet Tuzcu
- Firat University, Department of Biology, Elazig, Turkey
| | - Nurhan Sahin
- Firat University, Department of Animal Nutrition, Elazig, Turkey
| | - Ismet Yılmaz
- Department of Pharmacology, Faculty of Pharmacy, Inonu University, Malatya, Turkey
| | - Vijaya Juturu
- OmniActive Health Technologies Inc., Department of Clinical Affairs, Morristown, USA
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10
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Targeting the NF-E2-Related Factor 2 Pathway: a Novel Strategy for Traumatic Brain Injury. Mol Neurobiol 2017; 55:1773-1785. [PMID: 28224478 DOI: 10.1007/s12035-017-0456-z] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Accepted: 02/13/2017] [Indexed: 12/30/2022]
Abstract
As an essential component of cellular defense against a variety of endogenous and exogenous stresses, nuclear factor erythroid 2-related factor 2 (Nrf2) has received increased attention in the past decades. Multiple studies indicate that Nrf2 acts not only as an important protective factor in injury models but also as a downstream target of therapeutic agents. Activation of Nrf2 has increasingly been linked to many human diseases, especially in central nervous system (CNS) injury such as traumatic brain injury (TBI). Several researches have deciphered that activation of Nrf2 exerts antioxidative stress, antiapoptosis, and antiinflammation influence in TBI via different molecules and pathways including heme oxygenase-1 (HO-1), NADPH:quinine oxidoreductase-1 (NQO-1), nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB), and nicotinamide adenine dinucleotide phosphate oxidase 2 (NOX2). Hence, Nrf2 shows great promise as a molecular target in TBI. In the present article, we provide an updated review of the current state of our knowledge about relationship between Nrf2 and TBI, highlighting the specific roles of Nrf2 in TBI.
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11
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Fetoni AR, Paciello F, Rolesi R, Eramo SLM, Mancuso C, Troiani D, Paludetti G. Rosmarinic acid up-regulates the noise-activated Nrf2/HO-1 pathway and protects against noise-induced injury in rat cochlea. Free Radic Biol Med 2015; 85:269-81. [PMID: 25936352 DOI: 10.1016/j.freeradbiomed.2015.04.021] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Revised: 03/30/2015] [Accepted: 04/20/2015] [Indexed: 01/07/2023]
Abstract
Noise-induced hearing loss depends on progressive increase of reactive oxygen species and lipoperoxidative damage in conjunction with the imbalance of antioxidant defenses. The redox-sensitive transcription factor nuclear factor erythroid 2-related factor 2 (Nrf2) plays a critical role in the regulation of cellular defenses against oxidative stress, including heme oxygenase-1 (HO-1) activation. In this work we describe a link between cochlear oxidative stress damage, induced by noise exposure, and the activation of the Nrf2/HO-1 pathway. In our model, noise induces superoxide production and overexpression of the lipid peroxidation marker 4-hydroxy-nonenals (4-HNE). To face the oxidative stress, the endogenous defense system is activated as well, as shown by the slight activation of superoxide dismutases (SODs). In addition, we observed the activation of the Nrf2/HO-1 pathway after noise exposure. Nrf2 appears to promote the maintenance of cellular homeostasis under stress conditions. However, in this model the endogenous antioxidant system fails to counteract noise-induced cell damage and its activation is not effective enough in preventing cochlear damage. The herb-derived phenol rosmarinic acid (RA) attenuates noise-induced hearing loss, reducing threshold shift, and promotes hair cell survival. In fact, RA enhances the endogenous antioxidant defenses, as shown by decreased superoxide production, reduced expression of 4-HNE, and up-regulation of SODs. Interestingly, RA potentiates the Nrf2/HO-1 signaling pathway, as shown by immunohistochemical and Western blot analyses. Thus, protective effects of RA are associated with the induction/activation of the Nrf2-ARE signaling pathway in addition to RA direct scavenging capability.
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Affiliation(s)
- A R Fetoni
- Department of Head and Neck Surgery, Medical School, Università Cattolica, Largo F. Vito 1, 00168 Rome, Italy
| | - F Paciello
- Department of Head and Neck Surgery, Medical School, Università Cattolica, Largo F. Vito 1, 00168 Rome, Italy
| | - R Rolesi
- Department of Head and Neck Surgery, Medical School, Università Cattolica, Largo F. Vito 1, 00168 Rome, Italy
| | - S L M Eramo
- Institute of Human Physiology, Medical School, Università Cattolica, Largo F. Vito 1, 00168, Rome, Italy
| | - C Mancuso
- Institute of Pharmacology, Medical School, Università Cattolica, Largo F. Vito 1, 00168, Rome, Italy
| | - D Troiani
- Institute of Human Physiology, Medical School, Università Cattolica, Largo F. Vito 1, 00168, Rome, Italy
| | - G Paludetti
- Department of Head and Neck Surgery, Medical School, Università Cattolica, Largo F. Vito 1, 00168 Rome, Italy
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12
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Ramis MR, Esteban S, Miralles A, Tan DX, Reiter RJ. Caloric restriction, resveratrol and melatonin: Role of SIRT1 and implications for aging and related-diseases. Mech Ageing Dev 2015; 146-148:28-41. [PMID: 25824609 DOI: 10.1016/j.mad.2015.03.008] [Citation(s) in RCA: 108] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Revised: 03/24/2015] [Accepted: 03/25/2015] [Indexed: 12/11/2022]
Abstract
Aging is an inevitable and multifactorial biological process. Free radicals have been implicated in aging processes; it is hypothesized that they cause cumulative oxidative damage to crucial macromolecules and are responsible for failure of multiple physiological mechanisms. However, recent investigations have also suggested that free radicals can act as modulators of several signaling pathways such as those related to sirtuins. Caloric restriction is a non-genetic manipulation that extends lifespan of several species and improves healthspan; the belief that many of these benefits are due to the induction of sirtuins has led to the search for sirtuin activators, especially sirtuin 1, the most studied. Resveratrol, a polyphenol found in red grapes, was first known for its antioxidant and antifungal properties, and subsequently has been reported several biological effects, including the activation of sirtuins. Endogenously-produced melatonin, a powerful free radical scavenger, declines with age and its loss contributes to degenerative conditions of aging. Recently, it was reported that melatonin also activates sirtuins, in addition to other functions, such as regulator of circadian rhythms or anti-inflammatory properties. The fact that melatonin and resveratrol are present in various foods, exhibiting possible synergistic effects, suggests the use of dietary ingredients to promote health and longevity.
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Affiliation(s)
- Margarita R Ramis
- Laboratory of Neurophysiology, Department of Biology, University of the Balearic Islands, Palma, Spain.
| | - Susana Esteban
- Laboratory of Neurophysiology, Department of Biology, University of the Balearic Islands, Palma, Spain.
| | - Antonio Miralles
- Laboratory of Neurophysiology, Department of Biology, University of the Balearic Islands, Palma, Spain.
| | - Dun-Xian Tan
- Department of Cellular and Structural Biology, University of Texas Health Science Center, San Antonio, TX, USA.
| | - Russel J Reiter
- Department of Cellular and Structural Biology, University of Texas Health Science Center, San Antonio, TX, USA.
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Cornelius C, Koverech G, Crupi R, Di Paola R, Koverech A, Lodato F, Scuto M, Salinaro AT, Cuzzocrea S, Calabrese EJ, Calabrese V. Osteoporosis and alzheimer pathology: Role of cellular stress response and hormetic redox signaling in aging and bone remodeling. Front Pharmacol 2014; 5:120. [PMID: 24959146 PMCID: PMC4050335 DOI: 10.3389/fphar.2014.00120] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Accepted: 05/06/2014] [Indexed: 12/24/2022] Open
Abstract
Alzheimer’s disease (AD) and osteoporosis are multifactorial progressive degenerative disorders. Increasing evidence shows that osteoporosis and hip fracture are common complication observed in AD patients, although the mechanisms underlying this association remain poorly understood. Reactive oxygen species (ROS) are emerging as intracellular redox signaling molecules involved in the regulation of bone metabolism, including receptor activator of nuclear factor-κB ligand-dependent osteoclast differentiation, but they also have cytotoxic effects that include lipoperoxidation and oxidative damage to proteins and DNA. ROS generation, which is implicated in the regulation of cellular stress response mechanisms, is an integrated, highly regulated, process under control of redox sensitive genes coding for redox proteins called vitagenes. Vitagenes, encoding for proteins such as heat shock proteins (Hsps) Hsp32, Hsp70, the thioredoxin, and the sirtuin protein, represent a systems controlling a complex network of intracellular signaling pathways relevant to life span and involved in the preservation of cellular homeostasis under stress conditions. Consistently, nutritional anti-oxidants have demonstrated their neuroprotective potential through a hormetic-dependent activation of vitagenes. The biological relevance of dose–response affects those strategies pointing to the optimal dosing to patients in the treatment of numerous diseases. Thus, the heat shock response has become an important hormetic target for novel cytoprotective strategies focusing on the pharmacological development of compounds capable of modulating stress response mechanisms. Here we discuss possible signaling mechanisms involved in the activation of vitagenes which, relevant to bone remodeling and through enhancement of cellular stress resistance provide a rationale to limit the deleterious consequences associated to homeostasis disruption with consequent impact on the aging process.
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Affiliation(s)
- Carolin Cornelius
- Department of Chemistry, University of Catania Catania, Italy ; Department of Clinical and Experimental Medicine and Pharmacology, School of Medicine Messina, Italy
| | - Guido Koverech
- Department of Biomedical Sciences, University of Catania Catania, Italy
| | - Rosalia Crupi
- Department of Clinical and Experimental Medicine and Pharmacology, School of Medicine Messina, Italy
| | - Rosanna Di Paola
- Department of Clinical and Experimental Medicine and Pharmacology, School of Medicine Messina, Italy
| | - Angela Koverech
- Department of Biomedical Sciences, University of Catania Catania, Italy
| | - Francesca Lodato
- Department of Biomedical Sciences, University of Catania Catania, Italy
| | - Maria Scuto
- Department of Biomedical Sciences, University of Catania Catania, Italy
| | - Angela T Salinaro
- Department of Biomedical Sciences, University of Catania Catania, Italy
| | - Salvatore Cuzzocrea
- Department of Clinical and Experimental Medicine and Pharmacology, School of Medicine Messina, Italy ; University of Manchester Manchester, UK
| | - Edward J Calabrese
- Environmental Health Sciences Division, School of Public Health, University of Massachusetts Amherst, MA, USA
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Majzunova M, Dovinova I, Barancik M, Chan JYH. Redox signaling in pathophysiology of hypertension. J Biomed Sci 2013; 20:69. [PMID: 24047403 PMCID: PMC3815233 DOI: 10.1186/1423-0127-20-69] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Accepted: 09/14/2013] [Indexed: 02/07/2023] Open
Abstract
Reactive oxygen species (ROS) are products of normal cellular metabolism and derive from various sources in different cellular compartments. Oxidative stress resultant from imbalance between ROS generation and antioxidant defense mechanisms is important in pathogenesis of cardiovascular diseases, such as hypertension, heart failure, atherosclerosis, diabetes, and cardiac hypertrophy. In this review we focus on hypertension and address sources of cellular ROS generation, mechanisms involved in regulation of radical homeostasis, superoxide dismutase isoforms in pathophysiology of hypertension; as well as radical intracellular signaling and phosphorylation processes in proteins of the affected cardiovascular tissues. Finally, we discuss the transcriptional factors involved in redox-sensitive gene transcription and antioxidant response, as well as their roles in hypertension.
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Affiliation(s)
- Miroslava Majzunova
- Institute of Normal and Pathological Physiology, Slovak Academy of Sciences, Sienkiewiczova 1, 813 71 Bratislava, Slovakia.
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Cornelius C, Perrotta R, Graziano A, Calabrese EJ, Calabrese V. Stress responses, vitagenes and hormesis as critical determinants in aging and longevity: Mitochondria as a "chi". Immun Ageing 2013; 10:15. [PMID: 23618527 PMCID: PMC3644272 DOI: 10.1186/1742-4933-10-15] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Accepted: 04/13/2013] [Indexed: 01/01/2023]
Abstract
Understanding mechanisms of aging and determinants of life span will help to reduce age-related morbidity and facilitate healthy aging. Average lifespan has increased over the last centuries, as a consequence of medical and environmental factors, but maximal life span remains unchanged. Extension of maximal life span is currently possible in animal models with measures such as genetic manipulations and caloric restriction (CR). CR appears to prolong life by reducing reactive oxygen species (ROS)-mediated oxidative damage. But ROS formation, which is positively implicated in cellular stress response mechanisms, is a highly regulated process controlled by a complex network of intracellular signaling pathways. By sensing the intracellular nutrient and energy status, the functional state of mitochondria, and the concentration of ROS produced in mitochondria, the longevity network regulates life span across species by coordinating information flow along its convergent, divergent and multiply branched signaling pathways, including vitagenes which are genes involved in preserving cellular homeostasis during stressful conditions. Vitagenes encode for heat shock proteins (Hsp) Hsp32, Hsp70, the thioredoxin and the sirtuin protein systems. Dietary antioxidants, have recently been demonstrated to be neuroprotective through the activation of hormetic pathways, including vitagenes. The hormetic dose-response, challenges long-standing beliefs about the nature of the dose-response in a lowdose zone, having the potential to affect significantly the design of pre-clinical studies and clinical trials as well as strategies for optimal patient dosing in the treatment of numerous diseases. Given the broad cytoprotective properties of the heat shock response there is now strong interest in discovering and developing pharmacological agents capable of inducing stress responses. Here we focus on possible signaling mechanisms involved in the activation of vitagenes resulting in enhanced defense against energy and stress resistance homeostasis dysiruption with consequent impact on longevity processes.
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Affiliation(s)
- Carolin Cornelius
- Department of Chemistry University of Catania, Viale Andrea Doria, 95100 Catania, Italy
| | - Rosario Perrotta
- Department of Medicine and Surgery, University of Catania, Viale Andrea Doria, Catania, 95100, Italy
| | - Antonio Graziano
- Department of Medicine and Surgery, University of Catania, Viale Andrea Doria, Catania, 95100, Italy
| | - Edward J Calabrese
- Environmental Health Sciences Division, School of Public Health, University of Massachusetts, Amherst, MA, USA
| | - Vittorio Calabrese
- Department of Chemistry University of Catania, Viale Andrea Doria, 95100 Catania, Italy
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Sahin K, Orhan C, Tuzcu Z, Tuzcu M, Sahin N. Curcumin ameloriates heat stress via inhibition of oxidative stress and modulation of Nrf2/HO-1 pathway in quail. Food Chem Toxicol 2012; 50:4035-41. [PMID: 22939939 DOI: 10.1016/j.fct.2012.08.029] [Citation(s) in RCA: 99] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2012] [Revised: 08/11/2012] [Accepted: 08/14/2012] [Indexed: 12/11/2022]
Abstract
Curcumin, a natural polyphenol in the spice turmeric, exhibits antioxidant and antiinflammatory properties. This study was conducted to elucidate the action mode of curcumin alleviation of oxidative stress in heat-stressed quail. A total of 180 birds (10 d old) were assigned randomly to be reared at either 22°C (Thermoneutral) or 34°C (Heat stress) for 8 h/d (0900-1700) until the age of 42 d. Birds in both environments were randomly fed 1 of 3 diets: basal diet and basal diet added with 0, 200 or 400 mg of curcumin per kg of diet. Each of the 2×3 factorially arranged experimental groups was replicated in 10 cages, each containing three birds. In response to increasing supplemental curcumin level, there were linear increases in cumulative feed intake, final body weight, and weight gain, and nuclear factor erythroid 2-related factor two level and heme oxygenase one level; linear decreases in feed efficiency, serum, muscle and liver malondialdehyde level, respectively and inflammatory transcription factor, nuclear factor-κB and heat shock proteins 70 level (P<0.0001 for all). The results indicated that curcumin alleviates oxidative stress through modulating the hepatic nuclear transcription factors and heat shock proteins 70 in heat-stressed quails.
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Affiliation(s)
- K Sahin
- Department of Animal Nutrition, Faculty of Veterinary Science, Firat University, 23119 Elazig, Turkey.
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Hatic H, Kane MJ, Saykally JN, Citron BA. Modulation of transcription factor Nrf2 in an in vitro model of traumatic brain injury. J Neurotrauma 2012; 29:1188-96. [PMID: 22201269 DOI: 10.1089/neu.2011.1806] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Traumatic brain injury (TBI) afflicts approximately 1.4 million people in the United States and TBIs have been labeled a major cause of death and disability on a global scale. Regulatory responses in a variety of neuronal loss conditions have supported the protective involvement of the nuclear factor (erythroid-derived 2)-like 2 (Nrf2) transcription factor. Nrf2 regulates antioxidant enzyme genes, and an increase in Nrf2 expression may counteract oxidative damage that results from TBI. Elevated Nrf2 may ultimately act through the upregulation of downstream target genes such as thioredoxin (Trx) and heat-shock protein-70 (HSP70) and this may reduce neuronal loss. We performed multiple mild biaxial stretch injuries to neuroblastoma cells in culture, and examined the effects of the Nrf2 activator, tert-butylhydroquinone (tBHQ). We also compared the stretch injury to oxidative insult. We confirmed that Trx and HSP70 were upregulated by treatment with tBHQ. We observed that tBHQ protected neurons from either insult, and that this was evident by different measures of cell viability and a decrease in annexin V binding. Neuronal health after insult was improved approximately 50% by tBHQ, indicating that neurons exposed to TBI in vitro can be protected.
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Affiliation(s)
- Haris Hatic
- Laboratory of Molecular Biology, Research and Development 151, Bay Pines VA Healthcare System, Bay Pines, Florida 33744-4125, USA
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18
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Signorile A, Sardaro N, De Rasmo D, Scacco S, Papa F, Borracci P, Carratù MR, Papa S. Rat Embryo Exposure to All-Trans Retinoic Acid Results in Postnatal Oxidative Damage of Respiratory Complex I in the Cerebellum. Mol Pharmacol 2011; 80:704-13. [DOI: 10.1124/mol.111.073353] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
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Speck AE, Fraga D, Soares P, Scheffer DL, Silva LA, Aguiar AS, Estreck EL, Pinho RA. Cigarette smoke inhibits brain mitochondrial adaptations of exercised mice. Neurochem Res 2011; 36:1056-61. [PMID: 21424737 DOI: 10.1007/s11064-011-0447-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/09/2011] [Indexed: 12/11/2022]
Abstract
Physical exercise and smoking are environmental factors that generally cause opposite health-promoting adaptations. Both physical exercise and smoking converge on mitochondrial adaptations in various tissues, including the pro-oxidant nervous system. Here, we analyzed the impact of cigarette smoking on exercise-induced brain mitochondrial adaptations in the hippocampus and pre-frontal cortex of adult mice. The animals were exposed to chronic cigarette smoke followed by 8 weeks of moderate-intensity physical exercise that increased mitochondrial activity in the hippocampus and pre-frontal cortex in the non-smoker mice. However, mice previously exposed to cigarette smoke did not present these exercise-induced mitochondrial adaptations. Our results suggest that smoking can inhibit some brain health-promoting changes induced by physical exercise.
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Affiliation(s)
- Ana Elisa Speck
- Laboratório Experimental de Doenças Neurodegenerativas, Departamento de Farmacologia, Universidade Federal de Santa Catarina, Campus Trindade, Florianópolis, SC 88049-900, Brazil
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20
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Calabrese V, Cornelius C, Dinkova-Kostova AT, Calabrese EJ, Mattson MP. Cellular stress responses, the hormesis paradigm, and vitagenes: novel targets for therapeutic intervention in neurodegenerative disorders. Antioxid Redox Signal 2010; 13:1763-811. [PMID: 20446769 PMCID: PMC2966482 DOI: 10.1089/ars.2009.3074] [Citation(s) in RCA: 573] [Impact Index Per Article: 40.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2009] [Revised: 04/27/2010] [Accepted: 05/01/2010] [Indexed: 12/22/2022]
Abstract
Despite the capacity of chaperones and other homeostatic components to restore folding equilibrium, cells appear poorly adapted for chronic oxidative stress that increases in cancer and in metabolic and neurodegenerative diseases. Modulation of endogenous cellular defense mechanisms represents an innovative approach to therapeutic intervention in diseases causing chronic tissue damage, such as in neurodegeneration. This article introduces the concept of hormesis and its applications to the field of neuroprotection. It is argued that the hormetic dose response provides the central underpinning of neuroprotective responses, providing a framework for explaining the common quantitative features of their dose-response relationships, their mechanistic foundations, and their relationship to the concept of biological plasticity, as well as providing a key insight for improving the accuracy of the therapeutic dose of pharmaceutical agents within the highly heterogeneous human population. This article describes in mechanistic detail how hormetic dose responses are mediated for endogenous cellular defense pathways, including sirtuin and Nrf2 and related pathways that integrate adaptive stress responses in the prevention of neurodegenerative diseases. Particular attention is given to the emerging role of nitric oxide, carbon monoxide, and hydrogen sulfide gases in hormetic-based neuroprotection and their relationship to membrane radical dynamics and mitochondrial redox signaling.
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Cellular Stress Responses, Mitostress and Carnitine Insufficiencies as Critical Determinants in Aging and Neurodegenerative Disorders: Role of Hormesis and Vitagenes. Neurochem Res 2010; 35:1880-915. [DOI: 10.1007/s11064-010-0307-z] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/21/2010] [Indexed: 02/07/2023]
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Oxidative stress, redox homeostasis and cellular stress response in Ménière's disease: role of vitagenes. Neurochem Res 2010; 35:2208-17. [PMID: 21042850 DOI: 10.1007/s11064-010-0304-2] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/14/2010] [Indexed: 10/18/2022]
Abstract
Ménière's disease (MD) is characterized by the triad of fluctuating hearing loss, episodic vertigo and tinnitus, and by endolymphatic hydrops found on post-mortem examination. Increasing evidence suggests that oxidative stress is involved in the development of endolymphatic hydrops and that cellular damage and apoptotic cell death might contribute to the sensorineural hearing loss found in later stages of MD. While excess reactive oxygen species (ROS) are toxic, regulated ROS, however, play an important role in cellular signaling. The ability of a cell to counteract stressful conditions, known as cellular stress response, requires the activation of pro-survival pathways and the production of molecules with anti-oxidant, anti-apoptotic or pro-apoptotic activities. Among the cellular pathways conferring protection against oxidative stress, a key role is played by vitagenes, which include heat shock proteins (Hsps) as well as the thioredoxin/thioredoxin reductase system. In this study we tested the hypothesis that in MD patients measurable increases in markers of cellular stress response and oxidative stress in peripheral blood are present. This study also explores the hypothesis that changes in the redox status of glutathione, the major endogenous antioxidant, associated with abnormal expression and activity of carbonic anhydrase can contribute to increase oxidative stress and to disruption of systemic redox homeostasis which can be associated to possible alterations on vulnerable neurons such as spiral ganglion neurons and consequent cellular degeneration. We therefore evaluated systemic oxidative stress and cellular stress response in patients suffering from Meniere's disease (MD) and in age-matched healthy subjects. Systemic oxidative stress was estimated by measuring protein oxidation, such as protein carbonyls (PC) and 4-hydroxynonenal (HNE) in lymphocytes of MD patients, as well as ultraweak luminescence (UCL) as end-stable products of lipid oxidation in MD plasma and lymphocytes, as compared to age-matched controls, whereas heat shock proteins Hsp70 and thioredoxin (Trx) expression were measured in lymphocytes to evaluate the systemic cellular stress response. Increased levels of PC (P < 0.01) and HNE (P < 0.05) have been found in lymphocytes from MD patients with respect to control group. This was paralleled by a significant induction of Hsp70, and a decreased expression of Trx (P < 0.01), whereas a significant decrease in both plasma and lymphocyte ratio reduced glutathione GSH) vs. oxidized glutathione (GSSG) (P < 0.05) were also observed. In conclusion, patients affected by MD are under condition of systemic oxidative stress and the induction of vitagenes Hsp70 is a maintained response in counteracting the intracellular pro-oxidant status generated by decreased content of GSH as well as expression of Trx. The search for novel and more potent inducers of vitagenes will facilitate the development of pharmacological strategies to increase the intrinsic capacity of vulnerable ganglion cells to maximize antidegenerative mechanisms, such as stress response and thus cytoprotection.
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Candore G, Bulati M, Caruso C, Castiglia L, Colonna-Romano G, Di Bona D, Duro G, Lio D, Matranga D, Pellicanò M, Rizzo C, Scapagnini G, Vasto S. Inflammation, Cytokines, Immune Response, Apolipoprotein E, Cholesterol, and Oxidative Stress in Alzheimer Disease: Therapeutic Implications. Rejuvenation Res 2010; 13:301-13. [DOI: 10.1089/rej.2009.0993] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Affiliation(s)
- Giuseppina Candore
- Immunosenescence Unit, Department of Pathobiology and Biomedical Methodologies, University of Palermo, Palermo, Italy
| | - Matteo Bulati
- Immunosenescence Unit, Department of Pathobiology and Biomedical Methodologies, University of Palermo, Palermo, Italy
| | - Calogero Caruso
- Immunosenescence Unit, Department of Pathobiology and Biomedical Methodologies, University of Palermo, Palermo, Italy
| | - Laura Castiglia
- Immunosenescence Unit, Department of Pathobiology and Biomedical Methodologies, University of Palermo, Palermo, Italy
| | - Giuseppina Colonna-Romano
- Immunosenescence Unit, Department of Pathobiology and Biomedical Methodologies, University of Palermo, Palermo, Italy
| | - Danilo Di Bona
- Immunosenescence Unit, Department of Pathobiology and Biomedical Methodologies, University of Palermo, Palermo, Italy
| | | | - Domenico Lio
- Immunosenescence Unit, Department of Pathobiology and Biomedical Methodologies, University of Palermo, Palermo, Italy
| | - Domenica Matranga
- Dipartimento di Biotecnologie Mediche e Medicina Legale, University of Palermo, Palermo, Italy
| | - Mariavaleria Pellicanò
- Immunosenescence Unit, Department of Pathobiology and Biomedical Methodologies, University of Palermo, Palermo, Italy
| | - Claudia Rizzo
- Immunosenescence Unit, Department of Pathobiology and Biomedical Methodologies, University of Palermo, Palermo, Italy
| | | | - Sonya Vasto
- Immunosenescence Unit, Department of Pathobiology and Biomedical Methodologies, University of Palermo, Palermo, Italy
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Scapagnini G, Caruso C, Calabrese V. Therapeutic Potential of Dietary Polyphenols against Brain Ageing and Neurodegenerative Disorders. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2010; 698:27-35. [DOI: 10.1007/978-1-4419-7347-4_3] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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25
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Barone E, Trombino S, Cassano R, Sgambato A, de Paola B, Stasio ED, Picci N, Preziosi P, Mancuso C. Characterization of the S‐denitrosylating activity of bilirubin. J Cell Mol Med 2009. [DOI: 10.1111/j.1582-4934.2008.00680.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Affiliation(s)
- Eugenio Barone
- Institute of Pharmacology, Catholic University School of Medicine, Rome, Italy
| | - Sonia Trombino
- Department of Pharmaceutical Sciences, University of Calabria, Via P. Bucci, Arcavacata di Rende, Italy
| | - Roberta Cassano
- Department of Pharmaceutical Sciences, University of Calabria, Via P. Bucci, Arcavacata di Rende, Italy
| | - Alessandro Sgambato
- Institute of General Pathology, Catholic University School of Medicine, Rome, Italy
| | - Barbara de Paola
- Institute of General Pathology, Catholic University School of Medicine, Rome, Italy
| | - Enrico Di Stasio
- Institute of Biochemistry and Clinical Biochemistry, Catholic University School of Medicine, Rome, Italy
| | - Nevio Picci
- Department of Pharmaceutical Sciences, University of Calabria, Via P. Bucci, Arcavacata di Rende, Italy
| | - Paolo Preziosi
- Institute of Pharmacology, Catholic University School of Medicine, Rome, Italy
| | - Cesare Mancuso
- Institute of Pharmacology, Catholic University School of Medicine, Rome, Italy
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Bielecka-Dabrowa A, Barylski M, Mikhailidis DP, Rysz J, Banach M. HSP 70 and atherosclerosis--protector or activator? Expert Opin Ther Targets 2009; 13:307-17. [PMID: 19236153 DOI: 10.1517/14728220902725149] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND Atherosclerosis and its complications represent the leading cause of morbidity and mortality. Heat shock protein 70 (HSP70) protects cellular elements from injury by reducing oxidation, inflammation and apoptosis and by refolding damaged proteins. HSP70 improves viability of stressed vascular smooth muscle cells, possibly via its chaperone functions. It has been proposed that the response mounted against bacterial HSPs results in an autoimmune reaction, which has the potential to cause complement-mediated endothelial injury, and hence accelerate atherogenesis. OBJECTIVE to examine the roles of HSPs in atherosclerosis. METHODS A literature review. RESULTS/CONCLUSIONS The role of HSPs in atherosclerosis is controversial. HSP60 probably acts as an autoantigen, and may trigger both cell- and antibody-mediated immune responses, while HSP70 is likely to be involved in cytoprotection. The significance of this inverse relation between HSP70 and atherosclerosis has not yet been elucidated. Whether HSPs will become therapeutic targets remains to be established.
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Affiliation(s)
- Agata Bielecka-Dabrowa
- Department of Molecular Cardionephrology and Hypertension, Medical University of Lodz, Lodz, Poland
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