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Ipek V, Kaya K, Cebi C, Gurel A, Ayozger LEO. Effects of fish oil on
methotrexate‐induced
reproductive damage in rats. Andrologia 2022; 54:e14638. [DOI: 10.1111/and.14638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 10/18/2022] [Accepted: 10/29/2022] [Indexed: 11/13/2022] Open
Affiliation(s)
- Volkan Ipek
- Faculty of Veterinary Medicine, Department of Pathology Burdur Mehmet Akif Ersoy University Burdur Turkey
| | - Kursat Kaya
- Faculty of Medicine, Department of Medical Biochemistry Pamukkale University Denizli Turkey
| | - Cigdem Cebi
- Faculty of Veterinary Medicine, Department of Reproduction and Artificial Insemination Harran University Şanlıurfa Turkey
| | - Ali Gurel
- Faculty of Medicine, Department of Internal Medicine, Department of Nephrology Firat University Elazig Turkey
| | - Leyla Elif Ozgu Ayozger
- Faculty of Veterinary Medicine, Department of Pathology Burdur Mehmet Akif Ersoy University Burdur Turkey
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2
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Żychowska M, Sadowska-Krępa E, Damiani E, Tiano L, Ziemann E, Nowak-Zaleska A, Lipińska P, Piotrowska A, Czerwińska-Ledwig O, Pilch W, Antosiewicz J. Differences in the Pro/Antioxidative Status and Cellular Stress Response in Elderly Women after 6 Weeks of Exercise Training Supported by 1000 mg of Vitamin C Supplementation. Biomedicines 2022; 10:biomedicines10102641. [PMID: 36289902 PMCID: PMC9599586 DOI: 10.3390/biomedicines10102641] [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: 09/15/2022] [Revised: 10/16/2022] [Accepted: 10/19/2022] [Indexed: 11/17/2022] Open
Abstract
Vitamin C supplementation and exercise influence pro/antioxidative status and the cellular stress response. We tested the effects of exercise training for 6 weeks, supported by 1000 mg of vitamin C supplementation in elderly women. Thirty-six women were divided into two groups: a control group (CON) (n = 18, age 69.4 ± 6.4 years, 70.4 ±10.4 kg body mass) and a supplemented group (SUPP) (n = 18, aged 67.7 ± 5.6 years, body mass 71.46 ± 5.39 kg). Blood samples were taken twice (at baseline and 24 h after the whole period of training), in order to determine vitamin C concentration, the total oxidative status/capacity (TOS/TOC), total antioxidant status/capacity (TAS/TAC), and gene expression associated with cellular stress response: encoding heat shock factor (HSF1), heat shock protein 70 (HSPA1A), heat shock protein 27 (HSPB1), and tumor necrosis factor alpha (TNF-α). We observed a significant increase in TOS/TOC, TAS/TAC, and prooxidant/antioxidant balance in the SUPP group. There was a significant decrease in HSPA1A in the CON group and a different tendency in the expression of HSF1 and TNF-α between groups. In conclusion, vitamin C supplementation enhanced the pro-oxidation in elderly women with a normal plasma vitamin C concentration and influenced minor changes in training adaptation gene expression.
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Affiliation(s)
- Małgorzata Żychowska
- Department of Biological Foundations of Physical Culture, Kazimierz Wielki University, 85-091 Bydgoszcz, Poland
- Department of Nature Sciences, Gdansk University of Physical Education and Sport, 80-336 Gdansk, Poland
- Correspondence: (M.Ż.); (J.A.); Tel.: +48-88-155-5337 (M.Ż.)
| | - Ewa Sadowska-Krępa
- Institute of Sport Sciences, Jerzy Kukuczka Academy of Physical Education, 40-065 Katowice, Poland
| | - Elisabetta Damiani
- Department of Life and Environmental Sciences, Marche Polytechnic University, 60121 Ancona, Italy
| | - Luca Tiano
- Department of Life and Environmental Sciences, Marche Polytechnic University, 60121 Ancona, Italy
| | - Ewa Ziemann
- Department of Athletics, Strength and Conditioning, Poznan University of Physical Education, 61-871 Poznan, Poland
| | - Alicja Nowak-Zaleska
- Department of Biological Foundations of Physical Culture, Kazimierz Wielki University, 85-091 Bydgoszcz, Poland
| | - Patrycja Lipińska
- Department of Biological Foundations of Physical Culture, Kazimierz Wielki University, 85-091 Bydgoszcz, Poland
| | - Anna Piotrowska
- Institute of Basics Sciences, Faculty of Physiotherapy, University of Physical Education, 31-571 Kraków, Poland
| | - Olga Czerwińska-Ledwig
- Institute of Basics Sciences, Faculty of Physiotherapy, University of Physical Education, 31-571 Kraków, Poland
| | - Wanda Pilch
- Institute of Basics Sciences, Faculty of Physiotherapy, University of Physical Education, 31-571 Kraków, Poland
| | - Jędrzej Antosiewicz
- Department of Bioenergetics and Exercise Physiology, Medical University of Gdansk, 80-210 Gdansk, Poland
- Correspondence: (M.Ż.); (J.A.); Tel.: +48-88-155-5337 (M.Ż.)
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3
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Takio N, Yadav M, Barman M, Yadav HS. Purification, characterization, immobilization and kinetic studies of catalase from a novel source
Sechium edule. INT J CHEM KINET 2020. [DOI: 10.1002/kin.21468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Nene Takio
- Department of Chemistry North Eastern Regional Institute of Science and Technology Nirjuli Itanagar India
| | - Meera Yadav
- Department of Chemistry North Eastern Regional Institute of Science and Technology Nirjuli Itanagar India
| | - Mridusmita Barman
- Department of Chemistry North Eastern Regional Institute of Science and Technology Nirjuli Itanagar India
| | - Hardeo Singh Yadav
- Department of Chemistry North Eastern Regional Institute of Science and Technology Nirjuli Itanagar India
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Serum Selenium Status and Its Interrelationship with Serum Biomarkers of Thyroid Function and Antioxidant Defense in Hashimoto's Thyroiditis. Antioxidants (Basel) 2020; 9:antiox9111070. [PMID: 33142736 PMCID: PMC7692168 DOI: 10.3390/antiox9111070] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 10/01/2020] [Accepted: 10/03/2020] [Indexed: 02/07/2023] Open
Abstract
Selenium (Se) deficiency has been implicated in the pathogenesis of Hashimoto’s thyroiditis (HT), although the available evidence is limited. The present study aimed to explore the interrelationships between serum Se status with measures of thyroid function and antioxidant defense in new cases of HT patients with hypoechogenic thyroid. HT patients (n = 49) and matched controls (n = 50) were recruited. Selenium, thyroid hormone panel, thyroid volume (TVol), glutathione (GSH), glutathione peroxidase3 (GPx3) activity, urinary iodine concentration (UIC), and urinary creatinine (Cr) were assessed. HT patients exhibited lower Se levels compared to controls (p < 0.001) with the rates of Se-deficient (<0.85 µmol/L) participants being 58.8% and 34%, respectively. Se-deficient patients exhibited higher thyroid stimulating hormone (TSH), Thyroid volume (TVol), thyroglobulin, antibody-titers, GPx3 activity and UIC/Cr compared to Se-sufficient patients (all p < 0.001). In the Se-deficient patients, inverse correlations were seen between Se-levels with TSH, TVol, and Thyroid peroxidase antibody (TPO-Ab) (all p < 0.001). This study is the first to uncover that coexisting Se-deficiency and elevated iodine in HT may enhance autoimmune reactions and accelerate the deterioration of thyroid function through oxidative stress. Our study also highlights the importance of optimal Se status in this disease, thus providing a rationale for the execution of intervention trials for the evaluation of the clinical benefits of antioxidant-status improvement in HT.
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5
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Shemarova IV, Korotkov SM, Nesterov VP. Ca2+-Dependent
Mitochondrial Mechanisms of Cardioprotection. J EVOL BIOCHEM PHYS+ 2020. [DOI: 10.1134/s002209302004002x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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6
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Bernut A, Loynes CA, Floto RA, Renshaw SA. Deletion of cftr Leads to an Excessive Neutrophilic Response and Defective Tissue Repair in a Zebrafish Model of Sterile Inflammation. Front Immunol 2020; 11:1733. [PMID: 32849617 PMCID: PMC7412881 DOI: 10.3389/fimmu.2020.01733] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 06/29/2020] [Indexed: 11/13/2022] Open
Abstract
Inflammation-related progressive lung destruction is the leading causes of premature death in cystic fibrosis (CF), a genetic disorder caused by a defective cystic fibrosis transmembrane conductance regulator (CFTR). However, therapeutic targeting of inflammation has been hampered by a lack of understanding of the links between a dysfunctional CFTR and the deleterious innate immune response in CF. Herein, we used a CFTR-depleted zebrafish larva, as an innovative in vivo vertebrate model, to understand how CFTR dysfunction leads to abnormal inflammatory status in CF. We show that impaired CFTR-mediated inflammation correlates with an exuberant neutrophilic response after injury: CF zebrafish exhibit enhanced and sustained accumulation of neutrophils at wounds. Excessive epithelial oxidative responses drive enhanced neutrophil recruitment towards wounds. Persistence of neutrophils at inflamed sites is associated with impaired reverse migration of neutrophils and reduction in neutrophil apoptosis. As a consequence, the increased number of neutrophils at wound sites causes tissue damage and abnormal tissue repair. Importantly, the molecule Tanshinone IIA successfully accelerates inflammation resolution and improves tissue repair in CF animal. Our findings bring important new understanding of the mechanisms underlying the inflammatory pathology in CF, which could be addressed therapeutically to prevent inflammatory lung damage in CF patients with potential improvements in disease outcomes.
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Affiliation(s)
- Audrey Bernut
- Department of Infection, Immunity and Cardiovascular Disease, Medical School, University of Sheffield, Sheffield, United Kingdom
- Bateson Centre, University of Sheffield, Firth Court, Western Bank, Sheffield, United Kingdom
| | - Catherine A. Loynes
- Department of Infection, Immunity and Cardiovascular Disease, Medical School, University of Sheffield, Sheffield, United Kingdom
- Bateson Centre, University of Sheffield, Firth Court, Western Bank, Sheffield, United Kingdom
| | - R. Andres Floto
- Molecular Immunity Unit, Department of Medicine, University of Cambridge, Francis Crick Avenue, Cambridge Biomedical, Cambridge, United Kingdom
- Cambridge Centre for Lung Infection, Royal Papworth Hospital, Cambridge, United Kingdom
| | - Stephen A. Renshaw
- Department of Infection, Immunity and Cardiovascular Disease, Medical School, University of Sheffield, Sheffield, United Kingdom
- Bateson Centre, University of Sheffield, Firth Court, Western Bank, Sheffield, United Kingdom
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7
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Kim MH, Kim JY, Kim JH, Lee HS, Huh JW, Lee DS. Peroxiredoxin 2 deficiency reduces white adipogenesis due to the excessive ROS generation. Cell Biol Int 2020; 44:2086-2093. [PMID: 32639620 DOI: 10.1002/cbin.11417] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 06/11/2020] [Accepted: 07/05/2020] [Indexed: 12/17/2022]
Abstract
Reactive oxygen species (ROS) act as signaling molecules to regulate various cell functions. Numerous studies have demonstrated ROS to be essential for the differentiation of adipocytes. Peroxiredoxins (Prxs) are a ubiquitous family of antioxidant enzymes in mammalian cells. Prx2 is present in the cytoplasm and cell membranes and demonstrates ROS scavenging activity. We focused on Prx2 involvement in regulating adipogenesis and lipid accumulation and demonstrated that Prx2 expression was upregulated during adipocyte differentiation. In addition, the silencing of Prx2 (shPrx2) inhibited adipogenesis by modulating adipogenic gene expression, and cell death was enhanced via increased ROS production in shPrx2-3T3-L1 cells. These results demonstrate that shPrx2 triggers adipocyte cell death and weakens adipocyte function via ROS production. Taken together, our data suggest the participation of Prx2 in adipocyte function and differentiation. Our results also imply that the downregulation of Prx2 activity could help prevent obesity. Overall, findings support the development of ROS-based therapeutic solutions for the treatment of obesity and obesity-related metabolic disorders.
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Affiliation(s)
- Mi Hye Kim
- School of Life Sciences, BK21 Plus KNU Creative Bioresearch Group, Kyungpook National University, Daegu, Republic of Korea.,School of Life Sciences and Biotechnology, College of Natural Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - Jae Yeop Kim
- School of Life Sciences, BK21 Plus KNU Creative Bioresearch Group, Kyungpook National University, Daegu, Republic of Korea.,School of Life Sciences and Biotechnology, College of Natural Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - Jung-Hak Kim
- School of Life Sciences, BK21 Plus KNU Creative Bioresearch Group, Kyungpook National University, Daegu, Republic of Korea.,Division of Endocrinology, Internal Medicine, University of California, Davis, California
| | - Hyun-Shik Lee
- School of Life Sciences, BK21 Plus KNU Creative Bioresearch Group, Kyungpook National University, Daegu, Republic of Korea.,School of Life Sciences and Biotechnology, College of Natural Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - Jae-Won Huh
- National Primate Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Cheongju, Republic of Korea
| | - Dong-Seok Lee
- School of Life Sciences, BK21 Plus KNU Creative Bioresearch Group, Kyungpook National University, Daegu, Republic of Korea.,School of Life Sciences and Biotechnology, College of Natural Sciences, Kyungpook National University, Daegu, Republic of Korea
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8
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Silvestro S, Calcaterra V, Pelizzo G, Bramanti P, Mazzon E. Prenatal Hypoxia and Placental Oxidative Stress: Insights from Animal Models to Clinical Evidences. Antioxidants (Basel) 2020; 9:E414. [PMID: 32408702 PMCID: PMC7278841 DOI: 10.3390/antiox9050414] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/10/2020] [Accepted: 05/11/2020] [Indexed: 02/07/2023] Open
Abstract
Hypoxia is a common form of intrauterine stress characterized by exposure to low oxygen concentrations. Gestational hypoxia is associated with the generation of reactive oxygen species. Increase in oxidative stress is responsible for damage to proteins, lipids and DNA with consequent impairment of normal cellular functions. The purpose of this review is to propose a summary of preclinical and clinical evidences designed to outline the correlation between fetal hypoxia and oxidative stress. The results of the studies described show that increases of oxidative stress in the placenta is responsible for changes in fetal development. Specifically, oxidative stress plays a key role in vascular, cardiac and neurological disease and reproductive function dysfunctions. Moreover, the different finding suggests that the prenatal hypoxia-induced oxidative stress is associated with pregnancy complications, responsible for changes in fetal programming. In this way, fetal hypoxia predisposes the offspring to congenital anomalies and chronic diseases in future life. Several antioxidant agents, such as melatonin, erythropoietin, vitamin C, resveratrol and hydrogen, shown potential protective effects in prenatal hypoxia. However, future investigations will be needed to allow the implementation of these antioxidants in clinical practice for the promotion of health in early intrauterine life, in fetuses and children.
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Affiliation(s)
- Serena Silvestro
- Departmnent of Experimental Neurology, IRCCS Centro Neurolesi “Bonino-Pulejo”, Via Provinciale Palermo, Contrada Casazza, 98124 Messina, Italy; (S.S.); (P.B.)
| | - Valeria Calcaterra
- Pediatric and Adolescent Unit, Department of Internal Medicine, University of Pavia, 27100 Pavia, Italy;
| | - Gloria Pelizzo
- Department of Biomedical and Clinical Science “L. Sacco”, and Pediatric Surgery Department “V. Buzzi” Children’s Hospital, University of Milano, 20100 Milano, Italy;
| | - Placido Bramanti
- Departmnent of Experimental Neurology, IRCCS Centro Neurolesi “Bonino-Pulejo”, Via Provinciale Palermo, Contrada Casazza, 98124 Messina, Italy; (S.S.); (P.B.)
| | - Emanuela Mazzon
- Departmnent of Experimental Neurology, IRCCS Centro Neurolesi “Bonino-Pulejo”, Via Provinciale Palermo, Contrada Casazza, 98124 Messina, Italy; (S.S.); (P.B.)
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9
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Kim JY, Kim MH, Lee HJ, Huh JW, Lee SR, Lee HS, Lee DS. Peroxiredoxin 4 inhibits insulin-induced adipogenesis through regulation of ER stress in 3T3-L1 cells. Mol Cell Biochem 2020; 468:97-109. [PMID: 32185676 DOI: 10.1007/s11010-020-03714-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 03/06/2020] [Indexed: 02/06/2023]
Abstract
Obesity was originally considered a disease endemic to developed countries but has since emerged as a global health problem. Obesity is characterized by abnormal or excessive lipid accumulation (World Health Organization, WHO) resulting from pre-adipocyte differentiation (adipogenesis). The endoplasmic reticulum (ER) produces proteins and cholesterol and shuttles these compounds to their target sites. Many studies have implicated ER stress, indicative of ER dysfunction, in adipogenesis. Reactive oxygen species (ROS) are also known to be involved in pre-adipocyte differentiation. Prx4 specific to the ER lumen exhibits ROS scavenging activity, and we thereby focused on ER-specific Prx4 in tracking changes in adipocyte differentiation and lipid accumulation. Overexpression of Prx4 reduced ER stress and suppressed lipid accumulation by regulating adipogenic gene expression during adipogenesis. Our results demonstrate that Prx4 inhibits ER stress, lowers ROS levels, and attenuates pre-adipocyte differentiation. These findings suggested enhancing the activity of Prx4 may be helpful in the treatment of obesity; the data also support the development of new therapeutic approaches to obesity and obesity-related metabolic disorders.
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Affiliation(s)
- Jae Yeop Kim
- School of Life Sciences, BK21 Plus KNU Creative Bioresearch Group, Kyungpook National University, Daegu, Republic of Korea.,School of Life Sciences & Biotechnology, College of Natural Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - Mi Hye Kim
- School of Life Sciences, BK21 Plus KNU Creative Bioresearch Group, Kyungpook National University, Daegu, Republic of Korea.,School of Life Sciences & Biotechnology, College of Natural Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - Hong Jun Lee
- College of Medicine, Chungbuk National University, Chungbuk, Republic of Korea.,Research Institute, E-Biogen Inc, Seoul, Korea
| | - Jae-Won Huh
- National Primate Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Cheongju, Republic of Korea
| | - Sang-Rae Lee
- National Primate Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Cheongju, Republic of Korea
| | - Hyun-Shik Lee
- School of Life Sciences, BK21 Plus KNU Creative Bioresearch Group, Kyungpook National University, Daegu, Republic of Korea.,School of Life Sciences & Biotechnology, College of Natural Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - Dong-Seok Lee
- School of Life Sciences, BK21 Plus KNU Creative Bioresearch Group, Kyungpook National University, Daegu, Republic of Korea. .,School of Life Sciences & Biotechnology, College of Natural Sciences, Kyungpook National University, Daegu, Republic of Korea.
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10
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Shi Y, Pilozzi AR, Huang X. Exposure of CuO Nanoparticles Contributes to Cellular Apoptosis, Redox Stress, and Alzheimer's Aβ Amyloidosis. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:E1005. [PMID: 32033400 PMCID: PMC7038189 DOI: 10.3390/ijerph17031005] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 01/23/2020] [Accepted: 01/31/2020] [Indexed: 01/20/2023]
Abstract
Fe2O3, CuO and ZnO nanoparticles (NP) have found various industrial and biomedical applications. However, there are growing concerns among the general public and regulators about their potential environmental and health impacts as their physio-chemical interaction with biological systems and toxic responses of the latter are complex and not well understood. Herein we first reported that human SH-SY5Y and H4 cells and rat PC12 cell lines displayed concentration-dependent neurotoxic responses to insults of CuO nanoparticles (CuONP), but not to Fe2O3 nanoparticles (Fe2O3NP) or ZnO nanoparticles (ZnONP). This study provides evidence that CuONP induces neuronal cell apoptosis, discerns a likely p53-dependent apoptosis pathway and builds out the relationship between nanoparticles and Alzheimer's disease (AD) through the involvement of reactive oxygen species (ROS) and increased Aβ levels in SH-SY5Y and H4 cells. Our results implicate that exposure to CuONP may be an environmental risk factor for AD. For public health concerns, regulation for environmental or occupational exposure of CuONP are thus warranted given AD has already become a pandemic.
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Affiliation(s)
| | | | - Xudong Huang
- Neurochemistry Laboratory, Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129, USA; (Y.S.); (A.R.P.)
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Batotsyrenova E, Kashuro V, Ivanov M. The role of light desynchronosis in the development of stress-induced aging. BIO WEB OF CONFERENCES 2020. [DOI: 10.1051/bioconf/20202201006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The long-term change of the light mode for three months – light desynchronosis, disturbs the rhythm of the signals received from the external pacemaker. As a result of the study, it was found that a long-term change in the light mode and a violation of the rhythmicity of signals received from an external pacemaker contributes to the activation of ROS formation as triggers for bioenergetic processes in the cell. At the same time, changing the light mode disrupts the balance of oxygen in the cell and this is a provoking factor for the stress of the antioxidant cell system. The resulting tissue hypoxia in chronic light desynchronosis disrupts the bioenergetic potential of the cell, contributing to the development of pathophysiological processes and the death of neurons. Therefore, a violation of the balance of the pro-oxidant and anti-oxidant systems leads to destructive processes in the brain. A significant change in the concentration of the neurotrohic markers indicates destructive processes in the brain tissues. Summarizing the above, we conclude that light desynchronosis is directly involved in the ROS-dependent stress-induced aging of brain cells and in that way, to the progression of processes that lead to aging of the body.
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Astaxanthin Ameliorates Ischemic-Hypoxic-Induced Neurotrophin Receptor p75 Upregulation in the Endothelial Cells of Neonatal Mouse Brains. Int J Mol Sci 2019; 20:ijms20246168. [PMID: 31817750 PMCID: PMC6940833 DOI: 10.3390/ijms20246168] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 11/27/2019] [Accepted: 12/03/2019] [Indexed: 12/12/2022] Open
Abstract
Ischemic stroke is a leading cause of human death in present times. Two phases of pathological impact occur during an ischemic stroke, namely, ischemia and reperfusion. Both periods include individual characteristic effects on cell injury and apoptosis. Moreover, these conditions can cause severe cell defects and harm the blood-brain barrier (BBB). Also, the BBB components are the major targets in ischemia-reperfusion injury. The BBB owes its enhanced protective roles to capillary endothelial cells, which maintain BBB permeability. One of the nerve growth factor (NGF) receptors initiating cell signaling, once activated, is the p75 neurotrophin receptor (p75NTR). This receptor is involved in both the survival and apoptosis of neurons. Although many studies have attempted to explain the role of p75NTR in neurons, the mechanisms in endothelial cells remain unclear. Endothelial cells are the first cells to encounter p75NTR stimuli. In this study, we found the upregulated p75NTR expression and reductive expression of tight junction proteins after in vivo and in vitro ischemia-reperfusion injury. Moreover, astaxanthin (AXT), an antioxidant drug, was utilized and was found to reduce p75NTR expression and the number of apoptotic cells. This study verified that p75NTR plays a prominent role in endothelial cell death and provides a novel downstream target for AXT.
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13
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Chaliha M, Sultanbawa Y. Terminalia ferdinandiana, a traditional medicinal plant of Australia, alleviates hydrogen peroxide induced oxidative stress and inflammation, in vitro. ACTA ACUST UNITED AC 2019; 17:/j/jcim.ahead-of-print/jcim-2019-0008/jcim-2019-0008.xml. [DOI: 10.1515/jcim-2019-0008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 04/11/2019] [Indexed: 12/31/2022]
Abstract
AbstractBackgroundOxidative stress and inflammation are the underlying factors in many chronic debilitating diseases and commonly intertwined. Terminalia ferdinandiana is a traditional medicinal plant, endemic to Australia and is a rich source of many bioactive phytochemicals such as ellagic acid (EA) with known antioxidant capacity.MethodsWe investigated the in vitro antioxidant and anti-inflammatory activity of an aqueous food grade EA enriched (EAE) extract of T. ferdinandiana. Caco-2 and KERTr cell lines were treated with EAE or pure EA (used as reference control), followed by the exposure to hydrogen peroxide (H2O2). Levels of reactive oxygen species (ROS) production and gene expression of molecular markers associated with oxidative stress and inflammation were monitored.ResultsSignificant reduction in ROS production was observed in both cell types treated with 100 or 200 µg/mL EA or EAE. Treatment of cells with EAE or EA showed upregulation of mRNA expression of the antioxidative gene superoxide dismutase (SOD)-2 and downregulated the expression of inducible nitric oxide synthase (iNOS), soluble cell adhesion molecule (sICAM), and cyclooxygenase (COX)-2. Neither EAE nor EA had any effect on the constitutively expressed COX1.ConclusionsThe antioxidant and anti-inflammatory activity of T. ferdinandiana extract on mammalian cells exposed to H2O2 suggests the potential of using this traditional medicinal plant in preventing oxidative damage and inflammation related diseases.
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Affiliation(s)
- Mridusmita Chaliha
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Block 10, Level 1, 39 Kessels Rd, Coopers Plains Qld 4108, Queensland, Australia
| | - Yasmina Sultanbawa
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Block 10, Level 1, 39 Kessels Rd, Coopers Plains Qld 4108, Queensland, Australia
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Araújo AV, Andrade FA, Paulo M, de Paula TD, Potje SR, Pereira AC, Bendhack LM. NO donors induce vascular relaxation by different cellular mechanisms in hypertensive and normotensive rats. Nitric Oxide 2019; 86:12-20. [DOI: 10.1016/j.niox.2019.02.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 02/01/2019] [Accepted: 02/13/2019] [Indexed: 12/25/2022]
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15
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Cellular Defense Mechanisms Following Nanomaterial Exposure: A Focus on Oxidative Stress and Cytotoxicity. BIOLOGICAL RESPONSES TO NANOSCALE PARTICLES 2019. [DOI: 10.1007/978-3-030-12461-8_10] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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16
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Omega Class Glutathione S-Transferase: Antioxidant Enzyme in Pathogenesis of Neurodegenerative Diseases. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:5049532. [PMID: 29435097 PMCID: PMC5757135 DOI: 10.1155/2017/5049532] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 11/26/2017] [Indexed: 02/06/2023]
Abstract
The omega class glutathione S-transferases (GSTOs) are multifunctional enzymes involved in cellular defense and have distinct structural and functional characteristics, which differ from those of other GSTs. Previous studies provided evidence for the neuroprotective effects of GSTOs. However, the molecular mechanisms underpinning the neuroprotective functions of GSTOs have not been fully elucidated. Recently, our genetic and molecular studies using the Drosophila system have suggested that GstO1 has a protective function against H2O2-induced neurotoxicity by regulating the MAPK signaling pathway, and GstO2 is required for the activation of mitochondrial ATP synthase in the Drosophila neurodegenerative disease model. The comprehensive understanding of various neuroprotection mechanisms of Drosophila GstOs from our studies provides valuable insight into the neuroprotective functions of GstOs in vivo. In this review, we briefly introduce recent studies and summarize the novel biological functions and mechanisms underpinning neuroprotective effects of GstOs in Drosophila.
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Yu L, Gan X, Liu X, An R. Calcium oxalate crystals induces tight junction disruption in distal renal tubular epithelial cells by activating ROS/Akt/p38 MAPK signaling pathway. Ren Fail 2017; 39:440-451. [PMID: 28335665 PMCID: PMC6014313 DOI: 10.1080/0886022x.2017.1305968] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Tight junction plays important roles in regulating paracellular transports and maintaining cell polarity. Calcium oxalate monohydrate (COM) crystals, the major crystalline composition of kidney stones, have been demonstrated to be able to cause tight junction disruption to accelerate renal cell injury. However, the cellular signaling involved in COM crystal-induced tight junction disruption remains largely to be investigated. In the present study, we proved that COM crystals induced tight junction disruption by activating ROS/Akt/p38 MAPK pathway. Treating Madin–Darby canine kidney (MDCK) cells with COM crystals induced a substantial increasing of ROS generation and activation of Akt that triggered subsequential activation of ASK1 and p38 mitogen-activated protein kinase (MAPK). Western blot revealed a significantly decreased expression of ZO-1 and occludin, two important structural proteins of tight junction. Besides, redistribution and dissociation of ZO-1 were observed by COM crystals treatment. Inhibition of ROS by N-acetyl-l-cysteine (NAC) attenuated the activation of Akt, ASK1, p38 MAPK, and down-regulation of ZO-1 and occludin. The redistribution and dissociation of ZO-1 were also alleviated by NAC treatment. These results indicated that ROS were involved in the regulation of tight junction disruption induced by COM crystals. In addition, the down-regulation of ZO-1 and occludin, the phosphorylation of ASK1 and p38 MAPK were also attenuated by MK-2206, an inhibitor of Akt kinase, implying Akt was involved in the disruption of tight junction upstream of p38 MAPK. Thus, these results suggested that ROS-Akt-p38 MAPK signaling pathway was activated in COM crystal-induced disruption of tight junction in MDCK cells.
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Affiliation(s)
- Lei Yu
- a Department of Urology , the First Affiliated Hospital of Harbin Medical University , Harbin , Heilongjiang Province , P.R. China
| | - Xiuguo Gan
- a Department of Urology , the First Affiliated Hospital of Harbin Medical University , Harbin , Heilongjiang Province , P.R. China
| | - Xukun Liu
- b Department of General Surgery , the People's Hospital of Jixi , Jixi , Heilongjiang Province , P.R. China
| | - Ruihua An
- a Department of Urology , the First Affiliated Hospital of Harbin Medical University , Harbin , Heilongjiang Province , P.R. China
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Panina NS, Eremin AV, Belyaev AN. Copper and copper-palladium catalysts of aliphatic thiols oxidation in biological objects: Quantum-chemical DFT simulation. RUSS J GEN CHEM+ 2017. [DOI: 10.1134/s1070363217060020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Panina NS, Eremin AV, Belyaev AN. Principles of formation of catalytic systems for oxidation of aliphatic thiols based on d-element complexes. RUSS J GEN CHEM+ 2016. [DOI: 10.1134/s1070363216080077] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Abstract
SIGNIFICANCE Hydrogen peroxide (H2O2) is not only a key mediator of oxidative stress but also one of the most important cellular second messengers. This small short-lived molecule is involved in the regulation of a wide range of different biological processes, including regulation of cellular signaling pathways. Studying the role of H2O2 in living systems would be challenging without modern approaches. A genetically encoded fluorescent biosensor, HyPer, is one of the most effective tools for this purpose. RECENT ADVANCES HyPer has been used by many investigators of redox signaling in various models of different scales: from cytoplasmic subcompartments and single cells to tissues of whole organisms. In many studies, the results obtained using HyPer have enabled a better understanding of the roles of H2O2 in these biological processes. However, much remains to be learned. CRITICAL ISSUES In this review, we focus on the uses of HyPer. We provide a general description of HyPer and its improved versions. Separate chapters are devoted to the results obtained by various groups who have used this biosensor for their experiments in living cells and organisms. FUTURE DIRECTIONS HyPer is an effective tool for H2O2 imaging in living systems as indicated by the increasing numbers of publications each year since its development. However, this biosensor requires further improvements. In particular, much brighter and more pH-stable versions of HyPer are necessary for imaging in mammalian tissues. Antioxid. Redox Signal. 24, 731-751.
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Affiliation(s)
- Dmitry S Bilan
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry , Moscow, Russia
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Kanta J. The Role of Hydrogen Peroxide and Other Reactive Oxygen Species in Wound Healing. ACTA MEDICA (HRADEC KRÁLOVÉ) 2016; 54:97-101. [DOI: 10.14712/18059694.2016.28] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Wound healing is a complex physiological process important for tissue homeostasis. An acute injury initiates massive cell migration, proliferation and differentiation, synthesis of extracellular matrix components, scar formation and remodelling. Blood flow and tissue oxygenation are parts of the complex regulation of healing. Higher organisms utilize molecular oxygen as a terminal oxidant. This way of gaining energy for vital processes such as healing leads to the production of a number of oxygen compounds that may have a defensive or informatory role. They may be harmful when present in high concentrations. Both the lack and the excess of reactive oxygen species may influence healing negatively.
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Cao J, Wang H, Chen F, Fang J, Xu A, Xi W, Zhang S, Wu G, Wang Z. Galangin inhibits cell invasion by suppressing the epithelial-mesenchymal transition and inducing apoptosis in renal cell carcinoma. Mol Med Rep 2016; 13:4238-44. [PMID: 27035542 PMCID: PMC4838127 DOI: 10.3892/mmr.2016.5042] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Accepted: 01/18/2016] [Indexed: 02/07/2023] Open
Abstract
Galangin, a flavonoid extracted from the root of the Alpinia officinarum Hence, has been shown to have anticancer properties against several types of cancer cells. However, the influence of galangin on human renal cancer cells remains to be elucidated. In the present study, proliferation of 786-0 and Caki-1 cells was suppressed following exposure to various doses of galangin. Cell invasion and wound healing assays were used to observe the effect of galangin on invasion and migration. The results demonstrated that Galangin inhibited cell invasion by suppressing the epithelial mesenchymal transition (EMT), with an increase in the expression of E-cadherin and decreased expression levels of N-cadherin and vimentin. The apoptosis induced by galangin was analyzed by flow cytometry. The results revealed that galangin induced apoptosis in a dose-dependent manner. The accumulation of reactive oxygen species (ROS) is an important contributing factor for the apoptosis of various types of cancer cell. The dichlorofluorescein-diacetate method was used to determine the level of ROS. Galangin induced the accumulation of intracellular ROS and malondialdehyde, and decreased the activities of total antioxidant and superoxide dismutase in renal cell carcinoma cells. Galangin exerted an antiproliferative effect and inhibited renal cell carcinoma invasion by suppressing the EMT. This treatment also induced apoptosis, accompanied by the production of ROS. Therefore, the present data suggested that galangin may have beneficial effects by preventing renal cell carcinoma growth, inhibiting cell invasion via the EMT and inducing cell apoptosis.
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Affiliation(s)
- Jingyi Cao
- State Key Laboratory of Reproductive Medicine and Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Hainan Wang
- State Key Laboratory of Reproductive Medicine and Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Feifei Chen
- Department of Respiratory Medicine, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu 210006, P.R. China
| | - Jianzheng Fang
- Clinical Center of Reproductive Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Aiming Xu
- State Key Laboratory of Reproductive Medicine and Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Wei Xi
- State Key Laboratory of Reproductive Medicine and Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Shengli Zhang
- State Key Laboratory of Reproductive Medicine and Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Gang Wu
- Department of Urology, Xuzhou Third People's Hospital, Xuzhou, Jiangsu 221005, P.R. China
| | - Zengjun Wang
- State Key Laboratory of Reproductive Medicine and Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
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Mizutani T, Mori R, Hirayama M, Sagawa Y, Shimizu K, Okano Y, Masaki H. Sodium Lauryl Sulfate Stimulates the Generation of Reactive Oxygen Species through Interactions with Cell Membranes. J Oleo Sci 2016; 65:993-1001. [DOI: 10.5650/jos.ess16074] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Taeko Mizutani
- Tokyo University of Technology - School of Bioscience and Biotechnology
| | - Ryota Mori
- Tokyo University of Technology - School of Bioscience and Biotechnology
| | - Misaki Hirayama
- Tokyo University of Technology - School of Bioscience and Biotechnology
| | - Yuki Sagawa
- Tokyo University of Technology - School of Bioscience and Biotechnology
| | | | - Yuri Okano
- Tokyo University of Technology - School of Bioscience and Biotechnology
| | - Hitoshi Masaki
- Tokyo University of Technology - School of Bioscience and Biotechnology
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ZHU RAN, LI WEI, XU YAN, WAN JIANMEI, ZHANG ZENGLI. Upregulation of BTG1 enhances the radiation sensitivity of human breast cancer in vitro and in vivo. Oncol Rep 2015; 34:3017-24. [DOI: 10.3892/or.2015.4311] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Accepted: 08/04/2015] [Indexed: 11/06/2022] Open
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Platkov M, Tirosh R, Kaufman M, Zurgil N, Deutsch M. Photobleaching of fluorescein as a probe for oxidative stress in single cells. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2014; 140:306-14. [PMID: 25218588 DOI: 10.1016/j.jphotobiol.2014.08.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Revised: 08/18/2014] [Accepted: 08/24/2014] [Indexed: 11/26/2022]
Abstract
BACKGROUND ROS are involved in the regulation of many physiological and pathological processes. Apoptosis and necrosis are processes that are induced by changes in concentrations of Reactive Oxygen Species (ROS). This study aims to detect and quantify the cellular response to changing ROS concentrations in the scope of apoptosis and necrosis. METHODS Photobleaching of the fluorescent substrate fluorescein is used as a probe to detect the response of individual Jurkat-T-lymphocytes and Prostate-Cancer-3(PC-3) cells to oxidative stress, induced by hydrogen peroxide (H₂O₂). A kinetic model is proposed to describe changes in intracellular dye quantities due to photobleaching, dye hydrolysis, influx and leakage, yielding a single time-dependent decaying exponent+constant. RESULTS Fluorescein photobleaching is controlled and used to detect intracellular ROS. An increase in the decay time of fluorescence of intracellular fluorescein (slow photobleaching) was measured from cells incubated with H₂O₂ at 50 μM. At higher H₂O₂ concentrations a decrease in the decay time was measured (fast photobleaching), in contrast to in vitro results with fluorescein and H₂O₂ in phosphate buffer saline (PBS), where the addition of H₂O₂ decreases the decay time, regardless of the irradiation dose used. CONCLUSIONS The anomalous, ROS-concentration dependent reduction of the photobleaching rate in cells, as opposed to solutions, might indicate on the regulation of the activity of intracellular oxidative-stress protective mechanisms, as seen earlier with other methods. SIGNIFICANCE Assessing photobleaching via the time decay of the fluorescence intensity of an ROS-sensitive fluorophore may be adapted to monitor oxidative stress or ROS-related processes in cells.
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Affiliation(s)
- Max Platkov
- The Biophysical Interdisciplinary Jerome Schottenstein Center for the Research and the Technology of the Cellome, Physics Department, Bar-Ilan University, Ramat-Gan 52900, Israel.
| | - Reuven Tirosh
- The Biophysical Interdisciplinary Jerome Schottenstein Center for the Research and the Technology of the Cellome, Physics Department, Bar-Ilan University, Ramat-Gan 52900, Israel
| | - Menahem Kaufman
- The Biophysical Interdisciplinary Jerome Schottenstein Center for the Research and the Technology of the Cellome, Physics Department, Bar-Ilan University, Ramat-Gan 52900, Israel
| | - Naomi Zurgil
- The Biophysical Interdisciplinary Jerome Schottenstein Center for the Research and the Technology of the Cellome, Physics Department, Bar-Ilan University, Ramat-Gan 52900, Israel
| | - Mordechai Deutsch
- The Biophysical Interdisciplinary Jerome Schottenstein Center for the Research and the Technology of the Cellome, Physics Department, Bar-Ilan University, Ramat-Gan 52900, Israel
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Gauthier PT, Norwood WP, Prepas EE, Pyle GG. Metal-PAH mixtures in the aquatic environment: a review of co-toxic mechanisms leading to more-than-additive outcomes. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2014; 154:253-69. [PMID: 24929353 DOI: 10.1016/j.aquatox.2014.05.026] [Citation(s) in RCA: 131] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Revised: 05/21/2014] [Accepted: 05/22/2014] [Indexed: 05/10/2023]
Abstract
Mixtures of metals and polycyclic aromatic hydrocarbons (PAHs) occur ubiquitously in aquatic environments, yet relatively little is known regarding their combined toxicities. Emerging reports investigating the additive mortality in metal-PAH mixtures have indicated that more-than-additive effects are equally as common as strictly-additive effects, raising concern for ecological risk assessment typically based on the summation of individual toxicities. Moreover, the current separation of focus between in vivo and in vitro studies, and fine- and coarse-scale endpoints, creates uncertainty regarding the mechanisms of co-toxicity involved in more-than-additive effects on whole organisms. Drawing from literature on metal and PAH toxicity in bacteria, protozoa, invertebrates, fish, and mammalian models, this review outlines several key mechanistic interactions likely to promote more-than-additive toxicity in metal-PAH mixtures. Namely, the deleterious effects of PAHs on membrane integrity and permeability to metals, the potential for metal-PAH complexation, the inhibitory nature of metals to the detoxification of PAHs via the cytochrome P450 pathway, the inhibitory nature of PAHs towards the detoxification of metals via metallothionein, and the potentiated production of reactive oxygenated species (ROS) in certain metal (e.g. Cu) and PAH (e.g., phenanthrenequinone) mixtures. Moreover, the mutual inhibition of detoxification suggests the possibility of positive feedback among these mechanisms. The individual toxicities and interactive aspects of contaminant transport, detoxification, and the production of ROS are herein discussed.
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Affiliation(s)
- Patrick T Gauthier
- Faculty of Natural Resources Management, Lakehead University, Thunder Bay, ON, Canada P7B 5E1.
| | - Warren P Norwood
- Aquatic Contaminants Research Division, Environment Canada, Burlington, ON, Canada L7R 4A6
| | - Ellie E Prepas
- Faculty of Natural Resources Management, Lakehead University, Thunder Bay, ON, Canada P7B 5E1
| | - Greg G Pyle
- Department of Biological Sciences, University of Lethbridge, Lethbridge, AB, Canada T1K 3M4
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Qu L, Liu FX, Cao XC, Xiao Q, Yang X, Ren KQ. Activation of the apoptosis signal-regulating kinase 1/c-Jun N-terminal kinase pathway is involved in the casticin-induced apoptosis of colon cancer cells. Exp Ther Med 2014; 8:1494-1500. [PMID: 25289048 PMCID: PMC4186484 DOI: 10.3892/etm.2014.1934] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Accepted: 07/16/2014] [Indexed: 01/07/2023] Open
Abstract
Casticin is one of the main components of the fruits of Vitex rotundifolia L. Studies have shown that casticin inhibits the growth of various cancer cells, including colon cancer. In the present study, the anti-carcinogenic effects of casticin on human colon cancer and the underlying mechanisms were investigated. The results revealed that casticin significantly induced apoptosis of HT-29, HCT-116, SW480 and Caco-2 cells, induced the accumulation of reactive oxygen species (ROS) and increased the protein levels of apoptosis signal-regulating kinase 1 (ASK1), c-Jun N-terminal kinase (JNK) and B-cell lymphoma 2-interacting mediator of cell death (Bim) in HT-29 cells. Pretreatment with N-acetylcysteine, an antioxidant chemical compound, inhibited the activation of ASK1, JNK and Bim, as well as the apoptosis induced by casticin. Small interfering RNA targeting ASK1 significantly attenuated the induction of JNK and Bim activation and apoptotic cell death by casticin treatment. SP600125, a specific JNK inhibitor, attenuated Bim activation and apoptosis, but did not alter ASK1 phosphorylation levels. In addition, casticin treatment resulted in apoptosis by the same mechanism in HCT-116, SW480 and Caco-2 cells. These results suggest that casticin significantly induced apoptosis by the activation of the ASK1-JNK-Bim signaling cascade and the accumulation of ROS in colon cancer cells.
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Affiliation(s)
- Lin Qu
- Department of Examination, The Third Xiangya Hospital of Central South University, Changsha, Hunan 410013, P.R. China
| | - Feng-Xia Liu
- Department of Examination, The Third Xiangya Hospital of Central South University, Changsha, Hunan 410013, P.R. China
| | - Xiao-Cheng Cao
- Laboratory of Medicine, Medical College, Hunan Normal University, Changsha, Hunan 410016, P.R. China
| | - Qiao Xiao
- Laboratory of Medicine, Medical College, Hunan Normal University, Changsha, Hunan 410016, P.R. China
| | - Xiaohong Yang
- Laboratory of Medicine, Medical College, Hunan Normal University, Changsha, Hunan 410016, P.R. China
| | - Kai-Qun Ren
- Laboratory of Medicine, Medical College, Hunan Normal University, Changsha, Hunan 410016, P.R. China
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Alhazzazi TY, Kamarajan P, Verdin E, Kapila YL. Sirtuin-3 (SIRT3) and the Hallmarks of Cancer. Genes Cancer 2013; 4:164-71. [PMID: 24020007 DOI: 10.1177/1947601913486351] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Sirtuins (SIRT1-SIRT7), the mammalian homologs of the silent information regulator 2 (Sir2) in Saccharomyces cerevisiae, have been a major focus of study in the scientific community this past decade because of their emerging role in cancer biology and other age-related diseases. Emerging functions for this unique family of enzymes include roles in genomic stability, angiogenesis, metabolism, and anoikis. Here, we review recent developments on the role of sirtuins in cancer with a particular focus on SIRT3 and its role in the hallmarks of cancer and as a potential drug target for cancer treatment.
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Affiliation(s)
- Turki Y Alhazzazi
- Division of Oral Biology, Oral Basic and Clinical Sciences Department, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia ; Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, MI, USA
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Zou XY, Xu B, Yu CP, Zhang HW. Combined toxicity of ferroferric oxide nanoparticles and arsenic to the ciliated protozoa Tetrahymena pyriformis. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2013; 134-135:66-73. [PMID: 23584426 DOI: 10.1016/j.aquatox.2013.03.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2012] [Revised: 02/28/2013] [Accepted: 03/02/2013] [Indexed: 06/02/2023]
Abstract
Fe₃O₄ nanoparticles (NPs) have a high affinity for arsenic. As a result of this association, Fe₃O₄ NPs loaded with high concentration of arsenic can enter into organisms and produce locally high concentrations of arsenic, which may lead to some unexpected toxicity to aquatic organisms. The objectives of this research were to investigate the toxic effect of Fe₃O₄ NPs in combination with As(V). Cultured Tetrahymena pyriformis was chosen as a research model organism to evaluate the toxic effects of the combined agents. The results showed that after 24 h of As(V) exposure, the median effective concentration of As(V) to T. pyriformis was 1.29 mg/L. Fe₃O₄ NPs alone were not only non-toxic, but actually promoted the growth of T. pyriformis at the experimental doses. After 24 h exposure, the cell number increased by 32.2% at an exposure level of 3mg/L Fe₃O₄ NPs. After 24h exposure to 1.0 mg/L As(V), the survival rate increased from 60.5% in the absence of Fe₃O₄ NPs to 73.8% and 83.8% in the presence of 13 mg/L and 19 mg/L Fe₃O₄ NPs, respectively. However, after 30 h, the combined toxic effect of As(V) and Fe₃O₄ NPs on T. pyriformis was significantly enhanced and the survival rates for co-exposure to 1.5 mg/L As(V) and 13 mg/L Fe₃O₄ NPs decreased from 92.3% after 18 h to 45.3% after 30 h. After 18 h of exposure to Fe₃O₄ NPs alone, the intracellular ROS levels were markedly increased and achieved steady state. Compared with the control group, the intracellular ROS levels were significantly increased (2.56-fold) by the combination of 19 mg/L Fe₃O₄ NPs and 1.0 mg/L As(V). Accumulation of As(V) in T. pyriformis led to an increase in trivalent arsenics as a result of the saturation of the cellular arsenic methylation capability or/and redox reactions. These exposures also resulted in an imbalance between oxidants and antioxidants, resulting in oxidative damage and cell death.
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Affiliation(s)
- Xiao-Yan Zou
- Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, China
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Rostami R, Aghasi M, Mohammadi A, Nourooz-Zadeh J. Enhanced oxidative stress in Hashimoto's thyroiditis: Inter-relationships to biomarkers of thyroid function. Clin Biochem 2013; 46:308-12. [DOI: 10.1016/j.clinbiochem.2012.11.021] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2012] [Revised: 11/25/2012] [Accepted: 11/26/2012] [Indexed: 10/27/2022]
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Zhao H, Zhu C, Qin C, Tao T, Li J, Cheng G, Li P, Cao Q, Meng X, Ju X, Shao P, Hua L, Gu M, Yin C. Fenofibrate down-regulates the expressions of androgen receptor (AR) and AR target genes and induces oxidative stress in the prostate cancer cell line LNCaP. Biochem Biophys Res Commun 2013; 432:320-5. [PMID: 23399562 DOI: 10.1016/j.bbrc.2013.01.105] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Accepted: 01/24/2013] [Indexed: 01/22/2023]
Abstract
Fenofibrate, a peroxisome proliferator-androgen receptor-alpha agonist, is widely used in treating different forms of hyperlipidemia and hypercholesterolemia. Recent reports have indicated that fenofibrate exerts anti-proliferative and pro-apoptotic properties. This study aims to investigate the effects of fenofibrate on the prostate cancer (PCa) cell line LNCaP. The effects of fenofibrate on LNCaP cells were evaluated by flow cytometry, reverse transcription-polymerase chain reaction, enzyme-linked immunosorbent assays, Western blot analysis, and dual-luciferase reporter assay. Fenofibrate induces cell cycle arrest in G1 phase and apoptosis in LNCaP cells, reduces the expressions of androgen receptor (AR) and AR target genes (prostate-specific antigen and TMPRSS2), and inhibits Akt phosphorylation. Fenofibrate can induce the accumulation of intracellular reactive oxygen species and malondialdehyde, and decrease the activities of total anti-oxidant and superoxide dismutase in LNCaP cells. Fenofibrate exerts an anti-proliferative property by inhibiting the expression of AR and induces apoptosis by causing oxidative stress. Therefore, our data suggest fenofibrate may have beneficial effects in fenofibrate users by preventing prostate cancer growth through inhibition of androgen activation and expression.
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Affiliation(s)
- Hu Zhao
- State Key Laboratory of Reproductive Medicine, Department of Urology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
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Lee HK, Park GB, Kim YS, Song H, Broaddus VC, Hur DY. Ligation of CM1 enhances apoptosis of lung cancer cells through different mechanisms in conformity with EGFR mutation. Int J Oncol 2012; 42:469-77. [PMID: 23232551 PMCID: PMC3583643 DOI: 10.3892/ijo.2012.1731] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Accepted: 11/23/2012] [Indexed: 01/17/2023] Open
Abstract
Although remarkable developments in lung cancer treatments have been made, lung cancer remains the leading cause of cancer mortality worldwide. Epidermal growth factor receptor (EGFR) is occasionally mutated in non-small cell lung cancer and heterogeneity in treatment response results from different EGFR mutations. In the present study, we found that centrocyte/centroblast marker 1 (CM1), previously reported as a possible apoptosis inducer of B lymphoma cells, is expressed on both A549 with wild-type EGFR and HCC827 with mutant EGFR lung cancer cells. Ligation of CM1 with anti-CM1 mAb enhanced apoptosis in both lung cancer cell lines through generation of reactive oxygen species (ROS) and disruption of mitochondrial membrane potential, however, the signaling mechanisms differed from each other. Further studies to investigate the signaling mechanisms identified that ligation of CM1-induced apoptosis in A549 cell involved FasL expression, caspase-8, ERK1/2 and Akt kinase, whereas apoptosis of HCC827 cells was induced through caspase-9, JNK and c-jun-dependent pathways. Taken together, we suggest that CM1 could be developed as a therapeutic target of lung cancer regardless of EGFR mutation status.
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Affiliation(s)
- Hyun-Kyung Lee
- Department of Internal Medicine, Inje University Busan Paik Hospital, Busan 614-735, Republic of Korea
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Song X, Kim SY, Lee YJ. The role of Bcl-xL in synergistic induction of apoptosis by mapatumumab and oxaliplatin in combination with hyperthermia on human colon cancer. Mol Cancer Res 2012; 10:1567-79. [PMID: 23051936 DOI: 10.1158/1541-7786.mcr-12-0209-t] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Colorectal cancer is the third leading cause of cancer-related mortality in the world. The main cause of death because of colorectal cancer is hepatic metastases, which can be treated using isolated hepatic perfusion (IHP), allowing treatment of colorectal metastasis with various methods. In this study, we present a novel potent multimodality strategy comprising humanized death receptor 4 (DR4) antibody mapatumumab in combination with oxaliplatin and hyperthermia to treat human colon cancer cells. Oxaliplatin and hyperthermia sensitized colon cancer cells to mapatumumab in the mitochondrial-dependent apoptotic pathway and increased reactive oxygen species (ROS) production, leading to Bcl-xL phosphorylation at serine 62 in a c-jun-NH2-kinase (JNK)-dependent manner. Overexpression of Bcl-xL reduced the efficacy of the multimodality treatment, whereas phosphorylation of Bcl-xL decreased its antiapoptotic activity. The multimodality treatment dissociated Bcl-xL from Bax, allowing Bax oligomerization to induce cytochrome c release from mitochondria. In addition, the multimodality treatment significantly inhibited colorectal cancer xenografts' tumor growth. The successful outcome of this study will support the application of multimodality strategy to colorectal hepatic metastases.
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Affiliation(s)
- Xinxin Song
- Department of Surgery, University of Pittsburgh, Hillman Cancer Center, Pittsburgh, PA 15213, USA
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Begnini KR, Rizzi C, Campos VF, Borsuk S, Schultze E, Yurgel VC, Nedel F, Dellagostin OA, Collares T, Seixas FK. Auxotrophic recombinant Mycobacterium bovis BCG overexpressing Ag85B enhances cytotoxicity on superficial bladder cancer cells in vitro. Appl Microbiol Biotechnol 2012; 97:1543-52. [DOI: 10.1007/s00253-012-4416-2] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Revised: 08/31/2012] [Accepted: 09/04/2012] [Indexed: 01/22/2023]
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Park GB, Kim YS, Lee HK, Song H, Kim S, Cho DH, Hur DY. Reactive oxygen species and p38 MAPK regulate Bax translocation and calcium redistribution in salubrinal-induced apoptosis of EBV-transformed B cells. Cancer Lett 2011; 313:235-48. [PMID: 22056078 DOI: 10.1016/j.canlet.2011.09.011] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2011] [Revised: 09/08/2011] [Accepted: 09/10/2011] [Indexed: 10/17/2022]
Abstract
Salubrinal is a specific eIF2α phosphatase inhibitor that inhibits ER stress-mediated apoptosis. However, maintaining hyper-phosphorylated eIF2α state with high doses of salubrinal treatment promotes apoptosis in some cancer cells. In this report, we found that salubrinal induced apoptosis of EBV-transformed B cells. Notably, salubrinal induced ROS generation and p38 MPAK activation, which then induced expression of FasL. Moreover, salubrinal subsequently led to activation of caspases, calcium redistribution, Bax translocation, cytochrome c release, and apoptosis. These findings suggest that salubrinal may be a novel therapeutic approach for EBV-associated malignant diseases.
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Affiliation(s)
- Ga Bin Park
- Department of Anatomy and Research Center for Tumor Immunology, Inje University College of Medicine, Busan 614-735, Republic of Korea
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Lee BC, Park BH, Kim SY, Lee YJ. Role of Bim in diallyl trisulfide-induced cytotoxicity in human cancer cells. J Cell Biochem 2011; 112:118-27. [PMID: 21053278 DOI: 10.1002/jcb.22896] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The aim of this study was to investigate the effect of garlic constituent diallyl trisulfide (DATS) on the cell-death signaling pathway in a human breast cell line (MDA-MB-231). We observed that DATS (10-100 µM) treatment resulted in dose- and time-dependent cytotoxicity. Treatment of MDA-MB-231 cells with a cytotoxicity inducing concentration of DATS (50-80 µM) resulted in an increase in the intracellular level of reactive oxygen species (ROS). Data from assay with MitoSOX(TM) Red reagent suggest that mitochondria are the main source of ROS generation during DATS treatment. DATS-induced oxidative stress was detected through glutaredoxin (GRX), a redox-sensing molecule, and subsequently GRX was dissociated from apoptosis signal-regulating kinase 1 (ASK1). Dissociation of GRX from ASK1 resulted in the activation of ASK1. ASK1 activated a downstream signal transduction JNK (c-Jun N-terminal kinase)-Bim pathway. SP600125, a JNK inhibitor, inhibited DATS-induced Bim phosphorylation and protected cells from DATS-induced cytotoxicity. Our results indicate that the cytotoxicity caused by DATS is mediated by the generation of ROS and subsequent activation of the ASK1-JNK-Bim signal transduction pathway in human breast carcinoma MDA-MB-231 cells.
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Affiliation(s)
- Byeong-Chel Lee
- Department of Medicine, University of Pittsburgh, Pittsburgh, PA 15213, USA
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Langsdorf EF, Mao X, Chang SL. A role for reactive oxygen species in endotoxin-induced elevation of MOR expression in the nervous and immune systems. J Neuroimmunol 2011; 236:57-64. [PMID: 21684020 DOI: 10.1016/j.jneuroim.2011.05.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2011] [Revised: 05/16/2011] [Accepted: 05/17/2011] [Indexed: 11/24/2022]
Abstract
This study examined the mechanism by which exposure to lipopolysaccharide (LPS) alters mu-opioid receptor (MOR) expression in immune and neuronal cells using an in vitro conditioned medium model system. We found that LPS stimulated the intracellular accumulation of reactive oxygen species (ROS) and MOR expression in macrophage-like TPA-HL-60 cells. Conditioned medium from the LPS-stimulated TPA-HL-60 cells increased MOR expression in SH-SY5Y cells, a neuronal cell model, through actions mediated by TNF-α and GM-CSF. These data suggest that the endotoxin, LPS, modulates MOR expression in nervous and immune cells via ROS signaling, and demonstrates the crosstalk that exists within the neuroimmune axis.
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Affiliation(s)
- Erik F Langsdorf
- Institute of NeuroImmune Pharmacology, Seton Hall University, 400 South Orange Ave., South Orange, NJ 07079, USA
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Gao MC, Jia XD, Wu QF, Cheng Y, Chen FR, Zhang J. Silencing Prx1 and/or Prx5 sensitizes human esophageal cancer cells to ionizing radiation and increases apoptosis via intracellular ROS accumulation. Acta Pharmacol Sin 2011; 32:528-36. [PMID: 21468086 DOI: 10.1038/aps.2010.235] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
AIM To investigate whether down-regulation of peroxiredoxin 1 (Prx1) and/or peroxiredoxin 5 (Prx5) sensitizes human esophageal cancer cells to ionizing radiation (IR). METHODS Human esophageal carcinoma cell lines Eca-109 and TE-1 were used. Prx mRNA expression profiles in Eca-109 and TE-1 cells were determined using RT-PCR. Two highly expressed isoforms of Prxs, Prx1 and Prx5, were silenced by RNA interference (RNAi). Following IR, intracellular reactive oxygen species (ROS) and apoptosis were measured using flow cytometry, the activities of catalase, superoxide dismutase and glutathione peroxidase were measured, and the radiosensitizing effect of RNAi was observed. Tumor xenograft model was also used to examine the radiosensitizing effect of RNAi in vivo. RESULTS Down-regulation of Prx1 and/or Prx5 by RNAi does not alter the activities of catalase, superoxide dismutase and glutathione peroxidase, but made human tumor cells more sensitive to IR-induced apoptosis both in vitro and in vivo. When the two isoforms were decreased simultaneously, intracellular ROS and apoptosis significantly increased after IR. CONCLUSION Silencing Prx1 and/or Prx5 by RNAi sensitizes human Eca-109 and TE-1 cells to IR, and the intracellular ROS accumulation may contribute to the radiosensitizing effect of the RNAi.
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Laleu B, Gaggini F, Orchard M, Fioraso-Cartier L, Cagnon L, Houngninou-Molango S, Gradia A, Duboux G, Merlot C, Heitz F, Szyndralewiez C, Page P. First in class, potent, and orally bioavailable NADPH oxidase isoform 4 (Nox4) inhibitors for the treatment of idiopathic pulmonary fibrosis. J Med Chem 2010; 53:7715-30. [PMID: 20942471 DOI: 10.1021/jm100773e] [Citation(s) in RCA: 191] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
We describe the design, synthesis, and optimization of first-in-class series of inhibitors of NADPH oxidase isoform 4 (Nox4), an enzyme implicated in several pathologies, in particular idiopathic pulmonary fibrosis, a life-threatening and orphan disease. Initially, several moderately potent pyrazolopyridine dione derivatives were found during a high-throughput screening campaign. SAR investigation around the pyrazolopyridine dione core led to the discovery of several double-digit nanomolar inhibitors in cell free assays of reactive oxygen species (ROS) production, showing high potency on Nox4 and Nox1. The compounds have little affinity for Nox2 isoform and are selective for Nox4/1 isoforms. The specificity of these compounds was confirmed in an extensive in vitro pharmacological profile, as well as in a counterscreening assay for potential ROS scavenging. Concomitant benefits are good oral bioavailability and high plasma concentrations in vivo, allowing further clinical trials for the potential treatment of fibrotic diseases, cancers, and cardiovascular and metabolic diseases.
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Affiliation(s)
- Benoît Laleu
- Genkyotex, S.A., 14 Chemin des Aulx, CH-1228 Plan-Les-Ouates, Switzerland
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Alcala MA, Park K, Yoo J, Lee DH, Park BH, Lee BC, Bartlett DL, Lee YJ. Effect of hyperthermia in combination with TRAIL on the JNK-Bim signal transduction pathway and growth of xenograft tumors. J Cell Biochem 2010; 110:1073-81. [PMID: 20544795 DOI: 10.1002/jcb.22619] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Approximately 25% of patients with colorectal cancer develop metastases to the liver, and surgery is currently the best treatment available. But there are several patients who are unresectable, and isolated hepatic perfusion (IHP) offers a different approach in helping to treat these patients. IHP is a method used for isolating the liver and delivering high doses of chemotherapeutic agents. The efficacy of IHP has been improved by combining hyperthermia not only with chemotherapeutics but with other deliverable agents such as tumor necrosis factor-related apoptosis-inducing ligand (TRAIL). In this study, we used human colorectal cancer CX-1 cells and treated them with hyperthermia and TRAIL, causing cytotoxicity. We were able to demonstrate that the numbers of live cells were significantly reduced with hyperthermia and 10 ng/ml of TRAIL combined. We also showed that the effect of hyperthermia on TRAIL in our studies was enhancement of the apoptotic pathway by the promotion of JNK and Bim(EL) activity as well as PARP cleavage. We have also used our CX-1 cells to generate tumors in Balb/c nude mice. With intratumoral injections of TRAIL combined with hyperthermia at 42 degrees C, we were able to show a delayed onset of tumor growth in our xenograft model.
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Affiliation(s)
- Marco A Alcala
- Department of Surgery, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
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41
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Dubinina EE, Dadali VA. Role of 4-hydroxy-trans-2-nonenal in cell functions. BIOCHEMISTRY (MOSCOW) 2010; 75:1069-87. [DOI: 10.1134/s0006297910090014] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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42
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Mikhelson VM, Gamaley IA. Telomere shortening: The main mechanism of natural and radiation aging. Biophysics (Nagoya-shi) 2010. [DOI: 10.1134/s0006350910050295] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Nam HJ, Park YY, Yoon G, Cho H, Lee JH. Co-treatment with hepatocyte growth factor and TGF-beta1 enhances migration of HaCaT cells through NADPH oxidase-dependent ROS generation. Exp Mol Med 2010; 42:270-9. [PMID: 20177149 DOI: 10.3858/emm.2010.42.4.026] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Wound healing requires re-epithelialization from the wound margin through keratinocyte proliferation and migration, and some growth factors are known to influence this process. In the present study, we found that the co-treatment with hepatocyte growth factor (HGF) and TGF-beta1 resulted in enhanced migration of HaCaT cells compared with either growth factor alone, and that N-acetylcysteine, an antioxidant agent, was the most effective among several inhibitors tested, suggesting the involvement of reactive oxygen species (ROS). Fluorescence-activated cell sorter analysis using 2,7-dichlorofluorescein diacetate (DCF-DA) dye showed an early (30 min) as well as a late (24 h) increase of ROS after scratch, and the increase was more prominent with the growth factor treatment. Diphenyliodonium (DPI), a potent inhibitor of NADPH oxidase, abolished the increase of ROS at 30 min, followed by the inhibition of migration, but not the late time event. More precisely, gene knockdown by shRNA for either Nox-1 or Nox-4 isozyme of gp91phox subunit of NADPH oxidase abolished both the early time ROS production and migration. However, HaCaT cell migration was not enhanced by treatment with H((2))O((2)). Collectively, co-treatment with HGF and TGF-beta1 enhances keratinocyte migration, accompanied with ROS generation through NADPH oxidase, involving Nox-1 and Nox-4 isozymes.
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Affiliation(s)
- Hyun-Ja Nam
- Department of Biochemistry and Molecular Biology, Ajou University School of Medicine, Suwon 443-721, Korea
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Pan J, Chang Q, Wang X, Son Y, Zhang Z, Chen G, Luo J, Bi Y, Chen F, Shi X. Reactive oxygen species-activated Akt/ASK1/p38 signaling pathway in nickel compound-induced apoptosis in BEAS 2B cells. Chem Res Toxicol 2010; 23:568-77. [PMID: 20112989 PMCID: PMC2838407 DOI: 10.1021/tx9003193] [Citation(s) in RCA: 103] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
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Nickel compounds are carcinogenic to humans, possibly through induction of reactive oxygen species (ROS) that damage macromolecules including DNA and proteins. The aim of the present study is to elucidate the role of the ROS-mediated Akt/apoptosis-regulating signal kinase (ASK) 1/p38 pathway in nickel-induced apoptosis. Exposure of human bronchial epithelial cells (BEAS-2B) to nickel compounds induced the generation of ROS and activation of Akt that is associated with the activation of ASK1 and p38 mitogen-activated protein kinase. Immunoblotting suggested a down-regulation of several antiapoptotic proteins, including Bcl-2 and Bcl-xL in the nickel compound-treated cells. Indeed, a notable cell apoptosis following nickel compound treatment is evident as revealed by flow cytometry analysis. N-Acetyl-l-cysteine (NAC, a general antioxidant) and vitamin E or catalase (a specific H2O2 inhibitor) all decreased nickel-induced ROS generation. Scavenging of nickel-induced ROS by NAC or catalase attenuated Akt, ASK1, and p38 MAPK activation and apoptosis, which implies involvement of ROS in the Akt/ASK1/p38 pathway. In addition, nickel-induced activation of p38 MAPK was attenuated by a small interference of RNA specific to ASK1 (siRNA ASK1), implying that p38 MAPK was downstream of ASK1, while ASK1 activation was not reversely regulated by the inhibition of p38 MAPK by SB203580, a widely used p38 MAPK inhibitor. Silencing Akt by siRNA reduced the activation of ASK1 and p38 MAPK and cell apoptosis, whereas without nickel stimulation, siRNA Akt had no effect on the activation of ASK1 and p38 MAPK. Thus, these results suggest that the ROS-dependent Akt-ASK1-p38 axis is important for nickel-induced apoptosis.
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Affiliation(s)
- Jingju Pan
- Department of Occupational and Environmental Health, School of Public Health, Wuhan University, Wuhan 430071, China
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Gurusamy N, Lekli I, Ahsan MK, Ray D, Mukherjee S, Mascareno E, Siddiqui MAQ, Das DK. Downregulation of cardiac lineage protein-1 confers cardioprotection through the upregulation of redox effectors. FEBS Lett 2010; 584:187-93. [PMID: 19931534 DOI: 10.1016/j.febslet.2009.11.054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2009] [Revised: 10/16/2009] [Accepted: 11/11/2009] [Indexed: 10/20/2022]
Abstract
CLP-1, the mouse homologue of human Hexim1 protein, exerts inhibitory control on transcriptional elongation factor-b of RNA transcript elongation. Previously, we have demonstrated that downregulation of cardiac lineage protein-1 (CLP-1) in CLP-1(+/-) heterozygous mice affords cardioprotection against ischemia-reperfusion injury. Our current study results show that the improvement in cardiac function in CLP-1(+/-) mice after ischemia-reperfusion injury is achieved through the potentiation of redox signaling and their molecular targets including redox effector factor-1, nuclear factor erythroid 2-related factor, and NADPH oxidase 4 and the active usage of thioredoxin-1, thioredoxin-2, glutaredoxin-1 and glutaredoxin-2. Our results suggest that drugs designed to down regulate CLP-1 could confer cardioprotection through the potentiation of redox cycling.
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Affiliation(s)
- Narasimman Gurusamy
- Cardiovascular Research Center, University of Connecticut, School of Medicine, Farmington, CT 06030-1110, USA
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Cunningham RL, Giuffrida A, Roberts JL. Androgens induce dopaminergic neurotoxicity via caspase-3-dependent activation of protein kinase Cdelta. Endocrinology 2009; 150:5539-48. [PMID: 19837873 PMCID: PMC2795716 DOI: 10.1210/en.2009-0640] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Aged men have a greater incidence of Parkinson's disease (PD) than women. PD is a neurodegenerative condition associated with the loss of dopamine neurons in the nigrostriatal pathway. This study examined the neurotoxic effects of androgens in a dopaminergic cell line (N27 cells) and the downstream signaling pathways activated by androgens. Treatment of N27 cells with testosterone- and dihydrotestosterone-induced mitochondrial dysfunction, protein kinase C (PKC)-delta cleavage, and apoptosis in dopaminergic neuronal cells. Inhibition of caspase-3 prevented the cleavage of PKCdelta from the full-length element to the catalytic fragment and apoptosis in N27 cells, suggesting that androgen-induced apoptosis is mediated by caspase-3-dependent activation of PKCdelta. Androgen-induced apoptosis may be specific to dopamine neurons as evidenced by a lack of testosterone-induced apoptosis in GnRH neurons. These results support a neurotoxic consequence of testosterone on dopaminergic neurons and may provide insight into the gender bias found in PD.
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Affiliation(s)
- Rebecca L Cunningham
- Department of Pharmacology and the Sam and Ann Barshop Institute for Longevity and Aging Studies, University of Texas Health Science Center, San Antonio, Texas 78229, USA.
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47
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Implications of mitochondrial DNA mutations and mitochondrial dysfunction in tumorigenesis. Cell Res 2009; 19:802-15. [PMID: 19532122 DOI: 10.1038/cr.2009.69] [Citation(s) in RCA: 194] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Alterations in oxidative phosphorylation resulting from mitochondrial dysfunction have long been hypothesized to be involved in tumorigenesis. Mitochondria have recently been shown to play an important role in regulating both programmed cell death and cell proliferation. Furthermore, mitochondrial DNA (mtDNA) mutations have been found in various cancer cells. However, the role of these mtDNA mutations in tumorigenesis remains largely unknown. This review focuses on basic mitochondrial genetics, mtDNA mutations and consequential mitochondrial dysfunction associated with cancer. The potential molecular mechanisms, mediating the pathogenesis from mtDNA mutations and mitochondrial dysfunction to tumorigenesis are also discussed.
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Gurusamy N, Das DK. Autophagy, redox signaling, and ventricular remodeling. Antioxid Redox Signal 2009; 11:1975-88. [PMID: 19327038 PMCID: PMC2848474 DOI: 10.1089/ars.2009.2524] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2009] [Revised: 02/21/2009] [Accepted: 02/25/2009] [Indexed: 12/19/2022]
Abstract
Autophagy is a catabolic process through which damaged or long-lived proteins, macromolecules, or organelles are recycled by using lysosomal degradation machinery. Although the occurrence of autophagy in several cardiac diseases including ischemic or dilated cardiomyopathy, heart failure, hypertrophy, and during ischemia/reperfusion injury have been reported, the exact role of autophagy in these diseases is not known. Emerging studies indicate that oxidative stress in cellular system could induce autophagy, and oxidatively modified macromolecules and organelles can be selectively removed by autophagy. Mild oxidative stress-induced autophagy could provide the first line of protection against major damage like apoptosis and necrosis. Cardiac-specific loss of Atg5, an autophagic gene involved in the formation of autophagosome, causes cardiac hypertrophy, left ventricular dilation, and contractile dysfunction. Recently, it was revealed that Atg4, another autophagic gene involved in the formation of autophagosomes, is controlled through redox regulation under the condition of starvation-induced autophagy. In this review, we discuss the function of autophagy in association with oxidative stress and redox signaling in the remodeling of cardiac myocardium. Further research is needed to explore the possibilities of redox regulation of other autophagic genes and the role of redox signaling-mediated autophagy in the heart.
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Affiliation(s)
- Narasimman Gurusamy
- Cardiovascular Research Center, University of Connecticut School of Medicine, Farmington, Connecticut 06030-1110, USA
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Kim J, Wong PKY. Oxidative stress is linked to ERK1/2-p16 signaling-mediated growth defect in ATM-deficient astrocytes. J Biol Chem 2009; 284:14396-404. [PMID: 19321450 DOI: 10.1074/jbc.m808116200] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The gene that encodes the ATM protein kinase is mutated in ataxia-telangiectasia (A-T). One of the prominent features of A-T is progressive neurodegeneration. We have previously reported that primary astrocytes isolated from Atm(-/-) mice grow slowly and die earlier than control cells in culture. However, the mechanisms for this remain unclear. We show here that intrinsic elevated intracellular levels of reactive oxygen species (ROS) are associated with the senescence-like growth defect of Atm(-/-) astrocytes. This condition is accompanied by constitutively higher levels of ERK1/2 phosphorylation and p16(Ink4a) in Atm(-/-) astrocytes. We also observe that ROS-induced up-regulation of p16(Ink4a) occurs correlatively with ERK1/2-dependent down-regulation and subsequent dissociation from chromatin of Bmi-1. Furthermore, both mitogen-activated protein kinase (MAPK)/ERK inhibitor PD98059 and antioxidant N-acetyl-l-cysteine restored normal proliferation of Atm(-/-) astrocytes. These results suggest that ATM is required for normal astrocyte growth through its ability to stabilize intracellular redox status and that the inability to control ROS is the molecular basis of limited cell growth of Atm(-/-) astrocytes. This defect may be mediated by a mechanism involving ERK1/2 activation and Bmi-1 derepression of p16(Ink4a). These data identify new potential targets for therapeutic intervention in A-T neurodegeneration.
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Affiliation(s)
- Jeesun Kim
- Department of Carcinogenesis, University of Texas M. D. Anderson Cancer Center, Smithville, TX 78957, USA
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Matusali G, Arena G, De Leo A, Di Renzo L, Mattia E. Inhibition of p38 MAP kinase pathway induces apoptosis and prevents Epstein Barr virus reactivation in Raji cells exposed to lytic cycle inducing compounds. Mol Cancer 2009; 8:18. [PMID: 19272151 PMCID: PMC2657105 DOI: 10.1186/1476-4598-8-18] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2008] [Accepted: 03/09/2009] [Indexed: 12/15/2022] Open
Abstract
Background EBV lytic cycle activators, such as phorbol esters, anti-immunoglobulin, transforming growth factor β (TGFβ), sodium butyrate, induce apoptosis in EBV-negative but not in EBV-positive Burkitt's lymphoma (BL) cells. To investigate the molecular mechanisms allowing EBV-infected cells to be protected, we examined the expression of viral and cellular antiapoptotic proteins as well as the activation of signal transduction pathways in BL-derived Raji cells exposed to lytic cycle inducing agents. Results Our data show that, following EBV activation, the latent membrane protein 1 (LMP1) and the cellular anti-apoptotic proteins MCL-1 and BCL-2 were quickly up-regulated and that Raji cells remained viable even when exposed simultaneously to P(BU)2, sodium butyrate and TGFβ. We report here that inhibition of p38 pathway, during EBV activation, led to a three fold increment of apoptosis and largely prevented lytic gene expression. Conclusion These findings indicate that, during the switch from the latent to the lytic phase of EBV infection, p38 MAPK phosphorylation plays a key role both for protecting the host cells from apoptosis as well as for inducing viral reactivation. Because Raji cells are defective for late antigens expression, we hypothesize that the increment of LMP1 gene expression in the early phases of EBV lytic cycle might contribute to the survival of the EBV-positive cells.
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Affiliation(s)
- Giulia Matusali
- Department of Public Health Sciences, University La Sapienza, Rome, Italy.
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