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Abdelhameed NG, Ahmed YH, Yasin NAE, Mahmoud MY, El-Sakhawy MA. Effects of Aluminum Oxide Nanoparticles in the Cerebrum, Hippocampus, and Cerebellum of Male Wistar Rats and Potential Ameliorative Role of Melatonin. ACS Chem Neurosci 2023; 14:359-369. [PMID: 36689351 DOI: 10.1021/acschemneuro.2c00406] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Aluminum oxide nanoparticles (Al2O3 NPs) have been widely used in vaccine manufacture, food additives, human care products, and cosmetics. However, they also have adverse effects on different organs, including the liver, kidneys, and testes. Melatonin is a potent antioxidant, particularly against metals by forming melatonin-metal complexes. The present study aimed to investigate the protective effects of melatonin against Al2O3 NP-induced toxicity in the rat brain. Forty adult male Wistar rats were allocated to four groups: the untreated control (received standard diet and distilled water), Al2O3 NP-treated (received 30 mg/kg body weight Al2O3 NPs), melatonin and Al2O3 NP-treated (received 30 mg/kg body weight Al2O3 NPs + 10 mg/kg body weight melatonin), and melatonin-treated (received 10 mg/kg body weight melatonin) groups. All treatments were by oral gavages and administered daily for 28 days. Afterward, the rats were sacrificed, and samples from various brain regions (cerebrum, cerebellum, and hippocampus) were subjected to biochemical, histopathological, and immunohistochemical analyses. Al2O3 NPs substantially increased malondialdehyde, β-amyloid 1-42 peptide, acetylcholinesterase, and β-secretase-1 expression, whereas they markedly decreased glutathione levels. Furthermore, Al2O3 NPs induced severe histopathological alterations, including vacuolation of the neuropil, enlarged pericellular and perivascular spaces, vascular congestion, neuronal degeneration, and pyknosis. Al2O3 NP treatment also resulted in an intense positive caspase-3 immunostaining. Conversely, the administration of melatonin alleviated the adverse effects induced by Al2O3 NPs. Therefore, melatonin can diminish the neurotoxic effects induced by Al2O3 NPs.
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Affiliation(s)
- Nermeen G Abdelhameed
- Cytology and Histology Department, Faculty of Veterinary Medicine, Cairo University, Giza 12211, Egypt
| | - Yasmine H Ahmed
- Cytology and Histology Department, Faculty of Veterinary Medicine, Cairo University, Giza 12211, Egypt
| | - Noha A E Yasin
- Cytology and Histology Department, Faculty of Veterinary Medicine, Cairo University, Giza 12211, Egypt
| | - Mohamed Y Mahmoud
- Toxicology and Forensic Medicine Department, Faculty of Veterinary Medicine, Cairo University, Giza 12211, Egypt
| | - Mohamed A El-Sakhawy
- Cytology and Histology Department, Faculty of Veterinary Medicine, Cairo University, Giza 12211, Egypt
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2
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Doolan JA, Williams GT, Hilton KLF, Chaudhari R, Fossey JS, Goult BT, Hiscock JR. Advancements in antimicrobial nanoscale materials and self-assembling systems. Chem Soc Rev 2022; 51:8696-8755. [PMID: 36190355 PMCID: PMC9575517 DOI: 10.1039/d1cs00915j] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Indexed: 11/21/2022]
Abstract
Antimicrobial resistance is directly responsible for more deaths per year than either HIV/AIDS or malaria and is predicted to incur a cumulative societal financial burden of at least $100 trillion between 2014 and 2050. Already heralded as one of the greatest threats to human health, the onset of the coronavirus pandemic has accelerated the prevalence of antimicrobial resistant bacterial infections due to factors including increased global antibiotic/antimicrobial use. Thus an urgent need for novel therapeutics to combat what some have termed the 'silent pandemic' is evident. This review acts as a repository of research and an overview of the novel therapeutic strategies being developed to overcome antimicrobial resistance, with a focus on self-assembling systems and nanoscale materials. The fundamental mechanisms of action, as well as the key advantages and disadvantages of each system are discussed, and attention is drawn to key examples within each field. As a result, this review provides a guide to the further design and development of antimicrobial systems, and outlines the interdisciplinary techniques required to translate this fundamental research towards the clinic.
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Affiliation(s)
- Jack A Doolan
- School of Chemistry and Forensic Science, University of Kent, Canterbury, Kent CT2 7NH, UK.
- School of Biosciences, University of Kent, Canterbury, Kent CT2 7NJ, UK.
| | - George T Williams
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.
| | - Kira L F Hilton
- School of Chemistry and Forensic Science, University of Kent, Canterbury, Kent CT2 7NH, UK.
| | - Rajas Chaudhari
- School of Chemistry and Forensic Science, University of Kent, Canterbury, Kent CT2 7NH, UK.
| | - John S Fossey
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.
| | - Benjamin T Goult
- School of Biosciences, University of Kent, Canterbury, Kent CT2 7NJ, UK.
| | - Jennifer R Hiscock
- School of Chemistry and Forensic Science, University of Kent, Canterbury, Kent CT2 7NH, UK.
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3
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Genotoxicity of aluminium oxide, iron oxide, and copper nanoparticles in mouse bone marrow cells. Arh Hig Rada Toksikol 2021; 72:315-325. [PMID: 34985838 PMCID: PMC8785108 DOI: 10.2478/aiht-2021-72-3578] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 11/01/2021] [Indexed: 11/30/2022] Open
Abstract
The aim of this study was to evaluate the genotoxic effects of Al2O3, Fe2O3, and Cu nanoparticles with chromosomal aberration (CA), micronucleus (MN), and comet assays on the bone marrow of male BALB/c mice. Three doses of Al2O3, Fe2O3 (75, 150, and 300 mg/kg), or Cu (5, 10, and 15 mg/kg) nanoparticles were administered to mice through intraperitoneal injection once a day for 14 days and compared with negative control (distilled water) and positive control (mitomycin C and methyl methanesulphonate). Al2O3 and Fe2O3 did not show genotoxic effects, but Cu nanoparticles induced significant (P<0.05) genotoxicity at the highest concentration compared to negative control. Our findings add to the health risk information of Al2O3, Fe2O3, and Cu nanoparticles regarding human exposure (occupational and/or through consumer products or medical treatment), and may provide regulatory reference for safe use of these nanoparticles. However, before they can be used safely and released into the environment further chronic in vivo studies are essential.
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Pignet AL, Schellnegger M, Hecker A, Kohlhauser M, Kotzbeck P, Kamolz LP. Resveratrol-Induced Signal Transduction in Wound Healing. Int J Mol Sci 2021; 22:ijms222312614. [PMID: 34884419 PMCID: PMC8657598 DOI: 10.3390/ijms222312614] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/14/2021] [Accepted: 11/16/2021] [Indexed: 12/11/2022] Open
Abstract
Resveratrol is a well-known polyphenol that harbors various health benefits. Besides its well-known anti-oxidative potential, resveratrol exerts anti-inflammatory, pro-angiogenic, and cell-protective effects. It seems to be a promising adjuvant for various medical indications, such as cancer, vascular, and neurodegenerative diseases. Additionally, resveratrol was shown to display beneficial effects on the human skin. The polyphenol is discussed to be a feasible treatment approach to accelerate wound healing and prevent the development of chronic wounds without the drawback of systemic side effects. Despite resveratrol’s increasing popularity, its molecular mechanisms of action are still poorly understood. To take full advantage of resveratrol’s therapeutic potential, a profound knowledge of its interactions with its targets is needed. Therefore, this review highlights the resveratrol-induced molecular pathways with particular focus on the most relevant variables in wound healing, namely inflammation, oxidative stress, autophagy, collagen proliferation and angiogenesis.
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Affiliation(s)
- Anna-Lisa Pignet
- COREMED—Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, 8010 Graz, Austria; (M.S.); (A.H.); (M.K.); (P.K.); (L.-P.K.)
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, 8036 Graz, Austria
- Correspondence: ; Tel.: +43-316-876-6013
| | - Marlies Schellnegger
- COREMED—Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, 8010 Graz, Austria; (M.S.); (A.H.); (M.K.); (P.K.); (L.-P.K.)
| | - Andrzej Hecker
- COREMED—Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, 8010 Graz, Austria; (M.S.); (A.H.); (M.K.); (P.K.); (L.-P.K.)
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, 8036 Graz, Austria
| | - Michael Kohlhauser
- COREMED—Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, 8010 Graz, Austria; (M.S.); (A.H.); (M.K.); (P.K.); (L.-P.K.)
| | - Petra Kotzbeck
- COREMED—Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, 8010 Graz, Austria; (M.S.); (A.H.); (M.K.); (P.K.); (L.-P.K.)
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, 8036 Graz, Austria
| | - Lars-Peter Kamolz
- COREMED—Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, 8010 Graz, Austria; (M.S.); (A.H.); (M.K.); (P.K.); (L.-P.K.)
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, 8036 Graz, Austria
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Abd-Elhakim YM, Hashem MM, Abo-EL-Sooud K, Hassan BA, Elbohi KM, Al-Sagheer AA. Effects of Co-Exposure of Nanoparticles and Metals on Different Organisms: A Review. TOXICS 2021; 9:284. [PMID: 34822675 PMCID: PMC8623643 DOI: 10.3390/toxics9110284] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 10/18/2021] [Accepted: 10/22/2021] [Indexed: 11/24/2022]
Abstract
Wide nanotechnology applications and the commercialization of consumer products containing engineered nanomaterials (ENMs) have increased the release of nanoparticles (NPs) to the environment. Titanium dioxide, aluminum oxide, zinc oxide, and silica NPs are widely implicated NPs in industrial, medicinal, and food products. Different types of pollutants usually co-exist in the environment. Heavy metals (HMs) are widely distributed pollutants that could potentially co-occur with NPs in the environment. Similar to what occurs with NPs, HMs accumulation in the environment results from anthropogenic activities, in addition to some natural sources. These pollutants remain in the environment for long periods and have an impact on several organisms through different routes of exposure in soil, water, and air. The impact on complex systems results from the interactions between NPs and HMs and the organisms. This review describes the outcomes of simultaneous exposure to the most commonly found ENMs and HMs, particularly on soil and aquatic organisms.
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Affiliation(s)
- Yasmina M. Abd-Elhakim
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44511, Egypt;
| | - Mohamed M. Hashem
- Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Giza 12211, Egypt; (M.M.H.); (K.A.-E.-S.)
| | - Khaled Abo-EL-Sooud
- Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Giza 12211, Egypt; (M.M.H.); (K.A.-E.-S.)
| | - Bayan A. Hassan
- Pharmacology Department, Faculty of Pharmacy, Future University, Cairo 41639, Egypt;
| | - Khlood M. Elbohi
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44511, Egypt;
| | - Adham A. Al-Sagheer
- Department of Animal Production, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt
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Abou-Zeid SM, Elkhadrawey BA, Anis A, AbuBakr HO, El-Bialy BE, Elsabbagh HS, El-Borai NB. Neuroprotective effect of sesamol against aluminum nanoparticle-induced toxicity in rats. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:53767-53780. [PMID: 34037932 DOI: 10.1007/s11356-021-14587-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 05/21/2021] [Indexed: 06/12/2023]
Abstract
Alumina nanoparticles (ALNPs) are widely used causing neurobehavioral impairment in intoxicated animals and humans. Sesamol (SML) emerged as a natural phytochemical with potent antioxidant and anti-inflammatory properties. However, no study has directly tested the potential of SML to protect against AlNP-induced detrimental effects on the brain. AlNPs (100 mg/kg) were orally administered to rats by gavage with or without oral sesamol (100 mg/kg) for 28 days. In AlNP-intoxicated group, the brain AChE activity was elevated. The concentrations of MDA and 8-OHdG were increased suggesting lipid peroxidation and oxidative DNA damage. GSH depletion with inhibited activities of CAT and SOD were demonstrated. Serum levels of IL-1β and IL-6 were elevated. The expressions of GST, TNF-α, and caspase-3 genes in the brain were upregulated. Histopathologically, AlNPs induced hemorrhages, edema, neuronal necrosis, and/or apoptosis in medulla oblongata. The cerebellum showed loss of Purkinje cells, and the cerebrum showed perivascular edema, neuronal degeneration, necrosis, and neuronal apoptosis. However, concomitant administration of SML with AlNPs significantly ameliorated the toxic effects on the brain, reflecting antioxidant, anti-inflammatory, and anti-apoptotic effects of SML. Considering these results, sesamol could be a promising phytochemical with neuroprotective activity against AlNP-induced neurotoxicity.
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Affiliation(s)
- Shimaa M Abou-Zeid
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, University of Sadat City, Sadat, 32897, Egypt.
| | - Basma A Elkhadrawey
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, University of Sadat City, Sadat, 32897, Egypt
| | - Anis Anis
- Department of Pathology, Faculty of Veterinary Medicine, University of Sadat City, Sadat, 32897, Egypt
| | - Huda O AbuBakr
- Department of Biochemistry and Molecular Biology, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt
| | - Badr E El-Bialy
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, University of Sadat City, Sadat, 32897, Egypt
| | - Hesham S Elsabbagh
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, University of Sadat City, Sadat, 32897, Egypt
| | - Nermeen B El-Borai
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, University of Sadat City, Sadat, 32897, Egypt
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7
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Liu L, Kong L. Research progress on the carcinogenicity of metal nanomaterials. J Appl Toxicol 2021; 41:1334-1344. [PMID: 33527484 DOI: 10.1002/jat.4145] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 01/16/2021] [Accepted: 01/22/2021] [Indexed: 12/21/2022]
Abstract
With the rapid development of nanotechnology, new nanomaterials with enormous potentials continue to emerge, especially metal nanomaterials. Metal nanomaterials possess the characteristics of metals and nanomaterials, so they are widely used in many fields. But at the same time, whether the use or release of metal nan4omaterials into the environment is toxic to human beings and animals has now attained widespread attention at home and abroad. Currently, it is an indisputable fact that cancer ranks among the top causes of death among residents worldwide. The properties of causing DNA damage and mutations possessed by these metal nanomaterials make them unpredictable influences in the body, subsequently leading to genotoxicity and carcinogenicity. Due to the increasing evidence of their roles in carcinogenicity, this article reviews the toxicological and carcinogenic effects of metal nanomaterials, including nano-metal elements (nickel nanoparticles, silver nanoparticles, and cobalt nanoparticles) and nano-metal oxides (titanium dioxide nanoparticles, silica nanoparticles, zinc oxide nanoparticles, and alumina nanoparticles). This article provides a reference for the researchers and policymakers to use metal nanomaterials rationally in modern industries and biomedicine.
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Affiliation(s)
- Lin Liu
- Key Laboratory of Environment Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, China
| | - Lu Kong
- Key Laboratory of Environment Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, China
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Willhite CC, Karyakina NA, Nordheim E, Arnold I, Armstrong V, Momoli F, Shilnikova NS, Yenugadhati N, Krewski D. The REACH registration process: A case study of metallic aluminium, aluminium oxide and aluminium hydroxide. Neurotoxicology 2020; 83:166-178. [PMID: 33290785 DOI: 10.1016/j.neuro.2020.12.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The European Union's REACH Regulation requires determination of potential health and environmental effects of chemicals in commerce. The present case study examines the application of REACH guidance for health hazard assessments of three high production volume (HPV) aluminium (Al) substances: metallic aluminium, aluminium oxide, and aluminium hydroxide. Among the potential adverse health consequences of aluminium exposure, neurotoxicity is one of the most sensitive targets of Al toxicity and the most critical endpoint. This case study illustrates integration of data from multiple lines of evidence into REACH weight of evidence evaluations. This case study then explains how those results support regulatory decisions on classification and labelling. Challenges in the REACH appraisal of Al compounds include speciation, solubility and bioavailability, application of assessment factors, read-across rationale and differences with existing regulatory standards. Lessons learned from the present case study relate to identification and evaluation of toxicologic and epidemiologic data; assessing data relevance and reliability; development of derived no-effect levels (DNELs); addressing data gaps and preparation of chemical safety reports.
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Affiliation(s)
| | - Nataliya A Karyakina
- Risk Sciences International, Ottawa, Canada; McLaughlin Centre for Population Health Risk Assessment, University of Ottawa, Ottawa, Canada.
| | | | - Ian Arnold
- International Aluminium Institute, London, United Kingdom; Occupational Health Program, Faculty of Medicine, McGill University, Montreal, QC, Canada
| | | | - Franco Momoli
- Risk Sciences International, Ottawa, Canada; McLaughlin Centre for Population Health Risk Assessment, University of Ottawa, Ottawa, Canada; Faculty of Medicine, School of Epidemiology and Public Health, University of Ottawa, Ottawa, Canada
| | - Natalia S Shilnikova
- Risk Sciences International, Ottawa, Canada; McLaughlin Centre for Population Health Risk Assessment, University of Ottawa, Ottawa, Canada
| | - Nagarajkumar Yenugadhati
- Risk Sciences International, Ottawa, Canada; Department of Epidemiology and Biostatistics, College of Public Health and Health Informatics, King Saud bin Abdul-Aziz University for Health Sciences, Riyadh, Saudi Arabia
| | - Daniel Krewski
- Risk Sciences International, Ottawa, Canada; McLaughlin Centre for Population Health Risk Assessment, University of Ottawa, Ottawa, Canada; Faculty of Medicine, School of Epidemiology and Public Health, University of Ottawa, Ottawa, Canada
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De A, Ghosh S, Chakrabarti M, Ghosh I, Banerjee R, Mukherjee A. Effect of low-dose exposure of aluminium oxide nanoparticles in Swiss albino mice: Histopathological changes and oxidative damage. Toxicol Ind Health 2020; 36:567-579. [PMID: 32757906 DOI: 10.1177/0748233720936828] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Rapid growth in the use of aluminium oxide nanoparticles (Al2O3 NPs) in various fields such as medicine, pharmacy, cosmetic industries, and engineering creates concerns since the literature is replete with data regarding their toxicity in living organisms. The objective of the present study was to demonstrate the potential toxicological manifestations of repeated exposure to Al2O3 NP at low doses in vivo. In the present study, Al2O3 NP was orally administered at 15, 30 or 60 mg kg−1 body weight for 5 days to Swiss albino male mice. A battery of well-defined assays was undertaken to evaluate aluminium (Al) bioaccumulation, haematological and histological changes, oxidative damage and genotoxicity. Physico-chemical characterisation demonstrated increases in hydrodynamic diameter along the concentration gradient of Al2O3 NP dispersed in MilliQ water. Brain, liver, spleen, kidney and testes showed high Al retention levels. Histopathological lesions were prominent in the brain and liver. Al2O3 NP treatment increased levels of lipid peroxidation and decreased glutathione content in the test organs at all dose levels. The enzyme activities of catalase and superoxide dismutase were also significantly altered. DNA damage quantified using the comet assay was markedly increased in all the soft organs studied. Anatomical abnormalities, redox imbalance and DNA damage were positively correlated with Al retention in the respective organs. Size, zeta potential and colloidal state might have contributed to the bio-physico-chemical interactions of the NPs in vivo and were responsible for the non-linear dose response. The overall data indicate that Al2O3 NP exposure may result in adverse health consequences, inclusive of but not limited to disturbed redox homeostasis, hepatocellular toxicity, neurodegeneration and DNA damage.
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Affiliation(s)
- Arpita De
- Cell Biology and Genetic Toxicology Laboratory, Centre of Advanced Study, Department of Botany, University of Calcutta, Kolkata, West Bengal, India
| | - Swarupa Ghosh
- Department of Microbiology, Adamas University, Kolkata, West Bengal, India
| | - Manoswini Chakrabarti
- Cell Biology and Genetic Toxicology Laboratory, Centre of Advanced Study, Department of Botany, University of Calcutta, Kolkata, West Bengal, India
| | - Ilika Ghosh
- Cell Biology and Genetic Toxicology Laboratory, Centre of Advanced Study, Department of Botany, University of Calcutta, Kolkata, West Bengal, India
- Graduate School of Science and Engineering, Saitama University, Saitama, Japan
| | - Ritesh Banerjee
- Cell Biology and Genetic Toxicology Laboratory, Centre of Advanced Study, Department of Botany, University of Calcutta, Kolkata, West Bengal, India
| | - Anita Mukherjee
- Cell Biology and Genetic Toxicology Laboratory, Centre of Advanced Study, Department of Botany, University of Calcutta, Kolkata, West Bengal, India
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Boran H, Şaffak S. Transcriptome alterations and genotoxic influences in zebrafish larvae after exposure to dissolved aluminum and aluminum oxide nanoparticles. Toxicol Mech Methods 2020; 30:546-554. [PMID: 32580614 DOI: 10.1080/15376516.2020.1786759] [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] [Indexed: 10/24/2022]
Abstract
Manufactured nanoparticles (NPs) can potentially cause negative effects on molecular (proteins and nucleic acids), subcellular, cellular, tissue, organ, and organism due to their unusual physicochemical characteristics. Ionizable NPs in water (e.g., Al2O3-NPs) may create toxic effects on aquatic animals. The present research determined the influences of Al2O3-NPs and appropriate concentrations of ionizing Al(III) using water-soluble AlCl3 in zebrafish larvae (72 h post-fertilization, Danio rerio) by analyzing transcriptional alterations of stress-associated genes (rad51, p53, mt2) with quantitative real-time PCR (qRT-PCR). In addition, genotoxic effects of Al(III) and Al2O3-NPs were evaluated. The lethal concentrations that cause death of 50% (LC50) of zebrafish larvae when exposed to 0-50 mg/l Al(III) and 0-500 mg/l Al2O3-NPs were 3.26 ± 0.38 and 130.19 ± 5.59 mg/l, respectively, for 96 h. A concentration-dependent increase was observed in the genotoxicity in cells of larvae exposed to Al(III) and Al2O3-NPs for 96 h. DNA damage was more severe in larvae exposed to Al(III) (41.0% tail) than that of Al2O3-NPs (21.8% tail). A complex induction of stress-associated genes was observed in fish and this induction was not directly related to the concentrations of Al(III) and Al2O3-NPs, although a significant induction was detected in mt2 gene of larvae exposed to Al(III) and Al2O3-NPs relative to control group. The induction levels of mt2 were 4.13 ± 0.1 and 2.13 ± 0.1-fold change (mean ± S.E.M.) in larvae at 15 mg/l of Al(III) and 100 mg/l of Al2O3-NP concentrations, respectively.
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Affiliation(s)
- Halis Boran
- Faculty of Fisheries, Recep Tayyip Erdoğan University, Rize, Turkey
| | - Savaş Şaffak
- Faculty of Fisheries, Recep Tayyip Erdoğan University, Rize, Turkey
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11
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Wong SWY, Zhou GJ, Kwok KWH, Djurišić AB, Han J, Lee JS, Leung KMY. In vivo toxicities of nine engineered nano metal oxides to the marine diatom Skeletonema costatum and rotifer Brachionus koreanus. MARINE POLLUTION BULLETIN 2020; 153:110973. [PMID: 32275530 DOI: 10.1016/j.marpolbul.2020.110973] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 02/05/2020] [Accepted: 02/10/2020] [Indexed: 06/11/2023]
Abstract
This study compared in vivo acute toxicities of nine engineered nano metal oxides to the marine diatom Skeletonema costatum and rotifer Brachionus koreanus. The sequence of their toxicities to S. costatum, based on growth inhibition, was: nano zinc oxide (nZnO) > nTiO2 (rutile) > nMgO > Annealed nMgO > nTiO2 (anatase) > γ-nAl2O3 > nIn2O3 > α-nAl2O3 > nSnO2. Similarly, nZnO was also the most toxic to B. koreanus, but the other nano metal oxides were non-lethal. nMgO and nZnO were confirmed to trigger reactive oxygen species (ROS) mediated toxicity to the two marine organisms, while nTiO2 (both anatase and rutile forms) likely induced oxidative stress as shown by their acellular ROS production. nZnO may also cause damage in the endocrine system of B. koreanus, as indicated by the increased transcription of retinoid X receptor. Annealed nMgO reduces its toxicity via removal of O2- and impurities from its surface.
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Affiliation(s)
- Stella W Y Wong
- The Swire Institute of Marine Science and School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - Guang-Jie Zhou
- The Swire Institute of Marine Science and School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong, China.
| | - Kevin W H Kwok
- The Swire Institute of Marine Science and School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong, China; Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China
| | | | - Jeonghoon Han
- Department of Biological Science, College of Science, Sungkyunkwan University, Suwon, South Korea
| | - Jae-Seong Lee
- Department of Biological Science, College of Science, Sungkyunkwan University, Suwon, South Korea
| | - Kenneth M Y Leung
- The Swire Institute of Marine Science and School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong, China; State Key Laboratory of Marine Pollution (City University of Hong Kong), Tat Chee Avenue, Kowloon, Hong Kong, China.
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Zhang K, Pan X, Zheng J, Liu Y, Sun L. SIRT1 protects against aortic dissection by regulating AP-1/decorin signaling-mediated PDCD4 activation. Mol Biol Rep 2020; 47:2149-2159. [PMID: 32072402 DOI: 10.1007/s11033-020-05314-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 02/07/2020] [Indexed: 01/16/2023]
Abstract
Medial degeneration of aorta wall is the principal feature of aortic dissection (AD). Sirtuin 1 (SIRT1) plays essential protective effect on many aortic-associated disease. However, it is still unclear whether SIRT1participates in the process of medial degeneration-mediated AD. The purpose of this study is to explore the association between SIRT1 and AD process. qRT-PCR was used to evaluate the transcriptional level of genes involved in study. Protein levels and acetylation detection were measured by Western blotting. The regulatory relations between AP-1 and decorin was assessed by luciferase reporter gene assay. Acute aortic dissection (AAD) mice model was constructed by feeding with β-aminopropionitrile monofumarate (BAPN). Haematoxylin and eosin (HE) and Mallory staining were performed for pathological analysis. In clinical aorta tissue of thoracic aortic dissection (TAD), the expression of SIRT1, activator protein 1 (AP-1) and decorin were in accordant trend. AP-1 expression which acts on Decorin promoter region is possibly regulated in a SIRT1-mediated deacetylation dependent manner. Resveratrol or SRT1720-initiated SIRT1 activation ameliorated BAPN-induced AAD symptoms accompanied by the activation of AP-1/decorin signaling and decorin-mediated programmed cell death 4 (PDCD4) expression by inhibiting miR-21 and miR-181b. These data suggest that SIRT1/AP-1/decorin signal cascades possibly play a part role in the process of AD. Our research demonstrate that activation of SIRT1 protects against AAD symptoms by enhancing AP-1-mediated decorin expression and downstream PDCD4 signaling pathway. Possibly, SIRT1 is served as a protective factor of AD and targeting SIRT1 therapy might be an attractive therapeutic approaches for AD treatment.
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Affiliation(s)
- Kefeng Zhang
- Beijing Anzhen Hospital, Beijing Aortic Disease Center, Capital Medical University, Anzhen Road 2#, Chaoyang District, Beijing, China.
| | - Xudong Pan
- Beijing Anzhen Hospital, Beijing Aortic Disease Center, Capital Medical University, Anzhen Road 2#, Chaoyang District, Beijing, China
| | - Jun Zheng
- Beijing Anzhen Hospital, Beijing Aortic Disease Center, Capital Medical University, Anzhen Road 2#, Chaoyang District, Beijing, China
| | - Yongmin Liu
- Beijing Anzhen Hospital, Beijing Aortic Disease Center, Capital Medical University, Anzhen Road 2#, Chaoyang District, Beijing, China
| | - Lizhong Sun
- Beijing Anzhen Hospital, Beijing Aortic Disease Center, Capital Medical University, Anzhen Road 2#, Chaoyang District, Beijing, China
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Niu Y, Tang E, Zhang Q. Cytotoxic effect of silica nanoparticles against hepatocellular carcinoma cells through necroptosis induction. Toxicol Res (Camb) 2019; 8:1042-1049. [PMID: 32153770 DOI: 10.1039/c9tx00240e] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Accepted: 11/05/2019] [Indexed: 12/16/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is a common cancer that affects people worldwide with high morbidity and mortality, and its resistance to current chemotherapeutic drugs is a serious concern. Cytotoxicity of silica nanoparticles (Nano-SiO2) towards cancer cells has been reported previously, but the specific mechanism is not fully clear. In this study, Nano-SiO2 showed a remarkable cytotoxic effect against HCC cells, regardless of whether the cells were drug resistant or not. Further study showed that Nano-SiO2 treatment leads to cell cycle arrest, apoptosis enhancement and necroptosis induction in the HCC cells. RNA-seq data, together with bioinformatics analysis, revealed that a series of genes involved in cancer cell death could be regulated by Nano-SiO2, among which ZBP-1 was up-regulated the most by Nano-SiO2 treatment. The siRNA based experiments demonstrated that ZBP-1 might play a key role in mediating Nano-SiO2 cytotoxic functions against HCC cells. These results have evidently signified the anti-tumor potential of Nano-SiO2 in the treatment of HCC.
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Affiliation(s)
- Yuexiang Niu
- Department of Infectious Diseases , Linyi Central Hospital , Linyi , P.R. China .
| | - Engong Tang
- Department of Infectious Diseases , Linyi Central Hospital , Linyi , P.R. China .
| | - Qingan Zhang
- Department of Infectious Diseases , Linyi Central Hospital , Linyi , P.R. China .
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Antibacterial Activity of TiO2- and ZnO-Decorated with Silver Nanoparticles. JOURNAL OF COMPOSITES SCIENCE 2019. [DOI: 10.3390/jcs3020061] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
This work emphasizes the use of the silver decorative method to enhance the antibacterial activity of TiO2 and ZnO nanoparticles. These silver-decorated nanoparticles (hybrid nanoparticles) were synthesized using sodium borohydride as a reducing agent, with the weight ratio of Ag precursors/oxide nanoparticles = 1:30. The morphology and optical properties of these hybrid nanoparticles were investigated using transmission electron microscopy (TEM), X-ray diffraction (XRD) patterns, and UV-Vis spectroscopy. The agar-well diffusion method was used to evaluate their antibacterial activity against both Staphylococcus aureus and Escherichia coli bacteria, with or without light irradiation. The TEM images indicated clearly that silver nanoparticles (AgNPs, 5–10 nm) were well deposited on the surface of nano-TiO2 particles (30–60 nm). In addition to this, bigger AgNPs (<20 nm) were dispersed on the surface of nano-ZnO particles (30–50 nm). XRD patterns confirmed the presence of AgNPs in both Ag-decorated TiO2 and Ag-decorated ZnO nanoparticles. UV-Vis spectra confirmed that the hybridization of Ag and oxide nanoparticles led to a shift in the absorption edge of oxide nanoparticles to the lower energy region (visible region). The antibacterial tests indicated that both oxide pure nanoparticles did not exhibit inhibitory effects against bacteria, with or without light irradiation. However, the presence of AgNPs in their hybrids, even at low content (<40 mg/mL), leads to a good antibacterial activity, and higher inhibition zones under light irradiation as compared to those in dark were observed.
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Yousef MI, Mutar TF, Kamel MAEN. Hepato-renal toxicity of oral sub-chronic exposure to aluminum oxide and/or zinc oxide nanoparticles in rats. Toxicol Rep 2019; 6:336-346. [PMID: 31049295 PMCID: PMC6482313 DOI: 10.1016/j.toxrep.2019.04.003] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 03/25/2019] [Accepted: 04/14/2019] [Indexed: 12/12/2022] Open
Abstract
Oral sub-chronic exposure to Aluminum oxide or zinc oxide nanoparticles has hepato-renal toxicity. The toxicities of Aluminum oxide and/or zinc oxide NPs mediated through different correlated pathways. The pathways including; epigenetic changes, impaired antioxidant systems, induced oxidative stress and disturbed cytokine production. Exaggerated hepatic and renal toxicities of combined exposure to both NPs.
Aluminum oxide nanoparticles (Al2O3NPs) and zinc oxide nanoparticles (ZnONPs) have been involved in many industries and they are extensively abundant in many aspects of human life. Consequently, concerns have been raised about their potentially harmful effects. However the toxicities of Al2O3NPs and ZnONPs are well documented, the effect of co-exposure to both nanoparticles remains strictly obscure. Therefore, the present study was undertaken to address this issue. Four groups of male Wistar rats (10 rats each) were used; control, Al2O3NPs treated, ZnONPs treated and Co-treated groups. Rats were orally administered their respective treatment daily for 75 days. The effects of each nanoparticle alone or in combination were assessed at different levels including; hepatic and renal function, structure, and redox status, nuclear DNA fragmentation, hepatic expression of mitochondrial transcription factor A (mtTFA) gene and peroxisome proliferator-activated receptor gamma-coactivator 1α (PGC-1α), systemic inflammation, and hematologic parameters. The results confirmed the hepatorenal toxicities of each nanoparticle used at the level of all parameters with suppression of the hepatic expression of mtTFA and PGC-1α. The co-exposure to both nanoparticles results in synergistic effects. From these results, we can conclude that co-exposure to aluminum oxide nanoparticles and zinc oxide nanoparticles results in more pronounced hepatorenal toxicities and systemic inflammation.
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Key Words
- ACP, acid phosphatase
- ALT, alanine transaminase
- AST, aspartate transaminase
- AlP, alkaline phosphatase
- Aluminum oxide nanoparticles
- CAT, catalase
- Cytokines and p53
- DNA fragmentation
- GGT, gamma-glutamyl transferase
- GPX, glutathione peroxidase
- GSH, reduced glutathione
- GST, glutathione S-transferase
- Gene expression
- LDH, lactate dehydrogenase
- Oxidative stress
- PGC-1α, peroxisome proliferator activator receptor gamma-coactivator 1α
- ROS, reactive oxygen species
- SOD, superoxide dismutase
- TBARS, thiobarbituric acid-reactive substances
- Zinc oxide nanoparticles
- mtTFA, mitochondrial transcription factor A
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Affiliation(s)
- Mokhtar Ibrahim Yousef
- Department of Environmental Studies, Institute of Graduate Studies and Research, Alexandria University, Egypt
| | - Thulfiqar Fawwaz Mutar
- Department of Environmental Studies, Institute of Graduate Studies and Research, Alexandria University, Egypt
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16
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Luo FQ, Ma Q, Zheng H, Guo XW, Zhang J. Involvement of spinal SIRT1 in development of chronic constriction injury induced neuropathic pain in rats. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2018; 11:2561-2569. [PMID: 31938369 PMCID: PMC6958300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 12/27/2016] [Indexed: 06/10/2023]
Abstract
It is known that the epigenetic process of histone acetylation is involved in the neuropathic pain. The aim of this study was to determine whether sirtuin type 1 (SIRT1), an NAD+ dependent deacetylase, affected allodynia and hyperalgesia in neuropathic pain. The neuropathic pain model was established by ligature of the right sciatic nerve to induce chronic constriction injury (CCI) in rats. Histone acetyltransferase (HAT) activity was increased and, and histone deacetylase (HDAC) activity was declined in tissue of the spinal dorsa horn in CCI rates by means of enzyme-linked immunosorbent assay (ELISA). The persistent hyperalgesia and allodynia caused by CCI were associated with downregulation of SIRT1 and upregulation of acetylated-H3 (Ac-H3) in tissue of the spinal cord by Western blot assay, which was reversed after intrathecal injection of SIRT1 agonist SRT1720. SRT1720 treatment achieved analgesic through inhibiting the acetylation of nuclear factor kappa B (NF-κB) and blocking the releases of the inflammatory factors including tumor necrosis factor-α (TNF-α) and interleukin (IL)-6 by means of Western blot and real-time quantitative PCR (RT-PCR), respectively. Taken together, these data suggest that SIRT1 in the spinal cord plays an important role in the neuropathic pain in the rat model.
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Affiliation(s)
- Feng-Qin Luo
- Department of Anesthesiology, Zhejiang Hospital of Traditional Chinese Medicine, The First Affiliated Hospital of Zhejiang Chinese Medical University, Traditional Chinese Medical University Hangzhou, Zhejiang Provincial, China
| | - Qian Ma
- Department of Anesthesiology, Zhejiang Hospital of Traditional Chinese Medicine, The First Affiliated Hospital of Zhejiang Chinese Medical University, Traditional Chinese Medical University Hangzhou, Zhejiang Provincial, China
| | - Hui Zheng
- Department of Anesthesiology, Zhejiang Hospital of Traditional Chinese Medicine, The First Affiliated Hospital of Zhejiang Chinese Medical University, Traditional Chinese Medical University Hangzhou, Zhejiang Provincial, China
| | - Xiao-Wen Guo
- Department of Anesthesiology, Zhejiang Hospital of Traditional Chinese Medicine, The First Affiliated Hospital of Zhejiang Chinese Medical University, Traditional Chinese Medical University Hangzhou, Zhejiang Provincial, China
| | - Juan Zhang
- Department of Anesthesiology, Zhejiang Hospital of Traditional Chinese Medicine, The First Affiliated Hospital of Zhejiang Chinese Medical University, Traditional Chinese Medical University Hangzhou, Zhejiang Provincial, China
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Zhang Q, Ding Y, He K, Li H, Gao F, Moehling TJ, Wu X, Duncan J, Niu Q. Exposure to Alumina Nanoparticles in Female Mice During Pregnancy Induces Neurodevelopmental Toxicity in the Offspring. Front Pharmacol 2018; 9:253. [PMID: 29615914 PMCID: PMC5869208 DOI: 10.3389/fphar.2018.00253] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Accepted: 03/06/2018] [Indexed: 12/17/2022] Open
Abstract
Alumina nanoparticles (AlNP) have been shown to accumulate in organs and penetrate biological barriers which lead to toxic effects in many organ systems. However, it is not known whether AlNP exposure to female mice during pregnancy can affect the development of the central nervous system or induce neurodevelopmental toxicity in the offspring. The present study aims to examine the effect of AlNP on neurodevelopment and associated underlying mechanism. ICR strain adult female mice were randomly divided into four groups, which were treated with normal saline (control), 10 μm particle size of alumina (bulk-Al), and 50 and 13 nm AlNP during entire pregnancy period. Aluminum contents in the hippocampus of newborns were measured and neurodevelopmental behaviors were tracked in the offspring from birth to 1 month of age. Furthermore, oxidative stress and neurotransmitter levels were measured in the cerebral cortex of the adolescents. Our results showed that aluminum contents in the hippocampus of newborns in AlNP-treated groups were significantly higher than those in bulk-Al and controls. Moreover, the offspring delivered by AlNP-treated female mice displayed stunted neurodevelopmental behaviors. Finally, the offspring of AlNP-treated mice demonstrated significantly increased anxiety-like behavior with impaired learning and memory performance at 1 month of age. The underlying mechanism could be related to increased oxidative stress and decreased neurotransmitter levels in the cerebral cortex. We therefore conclude that AlNP exposure of female mice during pregnancy can induce neurodevelopmental toxicity in offspring.
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Affiliation(s)
- Qinli Zhang
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, China.,Department of Pathology, University of Mississippi Medical Center, Jackson, MS, United States
| | - Yong Ding
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, China
| | - Kaihong He
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, China
| | - Huan Li
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, China
| | - Fuping Gao
- Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China
| | - Taylor J Moehling
- Department of Pathology, University of Mississippi Medical Center, Jackson, MS, United States
| | - Xiaohong Wu
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, China
| | - Jeremy Duncan
- Department of Physiology, University of Mississippi Medical Center, Jackson, MS, United States
| | - Qiao Niu
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, China
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18
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Bhuvaneshwari M, Bairoliya S, Parashar A, Chandrasekaran N, Mukherjee A. Differential toxicity of Al2O3 particles on Gram-positive and Gram-negative sediment bacterial isolates from freshwater. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:12095-12106. [PMID: 26965278 DOI: 10.1007/s11356-016-6407-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Accepted: 03/01/2016] [Indexed: 06/05/2023]
Abstract
The current study was aimed to explore the differential effects on Gram-positive and Gram-negative freshwater sediment bacterial isolates upon exposure to nano-particles and bulk particles of Al2O3 at low concentrations (0.25, 0.5, and 1 mg/L). The Gram-negative Pseudomonas aeruginosa was more susceptible to both the nano-forms and bulk forms than the Gram-positive Bacillus altitudinis. The generation of reactive oxygen species (ROS) and release of lipopolysaccharide due to membrane damage were dependent on the dose of nano-Al2O3. The Fourier transform infrared spectroscopy (FT-IR) studies confirmed the attachment of nano-Al2O3 on bacterial cells, which may lead to subsequent changes in the cell membrane composition and integrity. Internalization of nano-Al2O3 was estimated to be more for P. aeruginosa than for B. altitudinis cells. As a role of defense mechanism, the biofilm formation and production of extracellular polymeric substances (EPSs; polysaccharide and protein) were increased with respect to the concentration of toxicant. Nano-Al2O3 was estimated to cause more DNA damage than the bulk particles in both Gram-positive and Gram-negative bacterial strains.
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Affiliation(s)
- M Bhuvaneshwari
- Centre for Nanobiotechnology, VIT University, Vellore, 632014, India
| | - Sakcham Bairoliya
- Centre for Nanobiotechnology, VIT University, Vellore, 632014, India
| | - Abhinav Parashar
- Centre for Nanobiotechnology, VIT University, Vellore, 632014, India
| | - N Chandrasekaran
- Centre for Nanobiotechnology, VIT University, Vellore, 632014, India
| | - Amitava Mukherjee
- Centre for Nanobiotechnology, VIT University, Vellore, 632014, India.
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19
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Mytych J, Wnuk M, Rattan SIS. Low doses of nanodiamonds and silica nanoparticles have beneficial hormetic effects in normal human skin fibroblasts in culture. CHEMOSPHERE 2016; 148:307-315. [PMID: 26814705 DOI: 10.1016/j.chemosphere.2016.01.045] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Revised: 01/07/2016] [Accepted: 01/11/2016] [Indexed: 06/05/2023]
Abstract
Nanodiamonds (ND) and silica nanoparticles (SiO2-NP) have been much investigated for their toxicity at high doses, little is known about their biological activity at low concentrations. Here we report the biphasic dose response of ND and SiO2-NP in modulating normal human facial skin fibroblasts (FSF1) in culture. ND and SiO2-NP at low concentration (up to 0.5 μg/ml) had beneficial effects on FSF1 in terms of increasing their proliferation and metabolic activity. Exposure of FSF1 cells to low levels of NP enhanced their wound healing ability in vitro and slowed down aging during serial passaging as measured by maintenance of youthful morphology, reduction in the rate of loss of telomeres, and the over all proliferative characteristics. Furthermore, NP treatment induced the activation of Nrf2- and FOXO3A-mediated cellular stress responses, including an increased expression of heme oxygenease (HO-1), sirtuin (SIRT1), and DNA methyltransferase II (DNMT2). These results imply that ND and SiO2-NP at low doses are potential hormetins, which exert mild stress-induced beneficial hormetic effects through improved survival, longevity, maintenance, repair and function of human cells.
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Affiliation(s)
- Jennifer Mytych
- Department of Genetics, University of Rzeszow, Rzeszow, Poland.
| | - Maciej Wnuk
- Department of Genetics, University of Rzeszow, Rzeszow, Poland.
| | - Suresh I S Rattan
- Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark.
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20
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Myeloid deletion of SIRT1 suppresses collagen-induced arthritis in mice by modulating dendritic cell maturation. Exp Mol Med 2016; 48:e221. [PMID: 26987484 PMCID: PMC4892877 DOI: 10.1038/emm.2015.124] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Revised: 11/22/2015] [Accepted: 11/29/2015] [Indexed: 12/29/2022] Open
Abstract
The type III histone deacetylase silent information regulator 1 (SIRT1) is an enzyme that is critical for the modulation of immune and inflammatory responses. However, the data on its role in rheumatoid arthritis (RA) are limited and controversial. To better understand how SIRT1 regulates adaptive immune responses in RA, we evaluated collagen-induced arthritis (CIA) in myeloid cell-specific SIRT1 knockout (mSIRT1 KO) and wild-type (WT) mice. Arthritis severity was gauged on the basis of clinical, radiographic and pathologic scores. Compared with their WT counterparts, the mSIRT1 KO mice exhibited less severe arthritis, which was less destructive to the joints. The expression levels of inflammatory cytokines, matrix metalloproteinases and ROR-γT were also reduced in the mSIRT1 KO mice compared with the WT mice and were paralleled by reductions in the numbers of Th1 and Th17 cells and CD80- or CD86-positive dendritic cells (DCs). In addition, impaired DC maturation and decreases in the Th1/Th17 immune response were observed in the mSIRT1 KO mice. T-cell proliferation was also investigated in co-cultures with antigen-pulsed DCs. In the co-cultures, the DCs from the mSIRT1 KO mice showed decreases in T-cell proliferation and the Th1/Th17 immune response. In this study, myeloid cell-specific deletion of SIRT1 appeared to suppress CIA by modulating DC maturation. Thus, a careful investigation of DC-specific SIRT1 downregulation is needed to gauge the therapeutic utility of agents targeting SIRT1 in RA.
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El-Hussainy EHMA, Hussein AM, Abdel-Aziz A, El-Mehasseb I. Effects of aluminum oxide (Al2O3) nanoparticles on ECG, myocardial inflammatory cytokines, redox state, and connexin 43 and lipid profile in rats: possible cardioprotective effect of gallic acid. Can J Physiol Pharmacol 2016; 94:868-78. [PMID: 27191243 DOI: 10.1139/cjpp-2015-0446] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The objectives of present study were to examine the effects of aluminum oxide (Al2O3) nanoparticles on myocardial functions, electrical activities, morphology, inflammation, redox state, and myocardial expression of connexin 43 (Cx43) and the effect of gallic acid (GA) on these effects in a rat animal model. Forty male albino rats were divided into 4 equal groups: the control (normal) group; the Al2O3 group, rats received Al2O3 (30 mg·kg(-1), i.p.) daily for 14 days; the nano-alumina group, rats received nano-alumina (30 mg·kg(-1), i.p.) daily for 14 days; and the nano-alumina + GA group, rats received GA (100 mg·kg(-1) orally once daily) for 14 days before nano-alumina administration. The results showed disturbed ECG variables and significant increases in serum levels of LDH, creatine phosphokinase (CPK), CK-MB, triglycerides (TGs), cholesterol and LDL, nitric oxide (NO), and TNF-α and myocardial concentrations of NO, TNF-α, and malondialdehyde (MDA), with significant decreases in serum HDL and myocardial GSH, SOD, catalase (CAT), and Cx43 expression in the nano-alumina group. Pretreatment with GA improved significantly all parameters except serum and myocardial NO. We concluded that chronic administration of Al2O3 NPs caused myocardial dysfunctions, and pretreatment with GA ameliorates myocardial injury induced by nano-alumina, probably through its hypolipidaemic, anti-inflammatory, and antioxidant effects and upregulation of Cx43 in heart.
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Affiliation(s)
| | | | - Azza Abdel-Aziz
- c Department of Pathology, Faculty of Medicine, Mansoura University, Egypt
| | - Ibrahim El-Mehasseb
- d Department of Inorganic Chemistry, Faculty of Science, Kafrelsheikh University, Egypt
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Kumari SA, Madhusudhanachary P, Patlolla AK, Tchounwou PB. Hepatotoxicity and Ultra Structural Changes in Wistar Rats treated with Al 2O 3 Nanomaterials. TRENDS IN CELL & MOLECULAR BIOLOGY 2016; 11:77-88. [PMID: 28706375 PMCID: PMC5505674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The present study was designed to evaluate the hepatotoxicity of aluminium oxide (Al2O3). To achieve this objective, Al2O3 of three different sizes (30nm, 40nm and bulk) was orally administered for 28 days to 9 groups of 10 Wistar rats each, at the dose of 500, 1000 and 2000 mg/Kg/rat. A tenth group of 10 rats received distilled water and served as control. After 28 days of exposure, the animals were sacrificed and the serum was collected and tested for the activity levels of aminotransferases (AST or GOT and ALT or GPT), alkaline phosphatase (ALP) and lactate dehydrogenase (LDH) enzymes following standard testing methods. Reduced glutathione (GSH) content was also measured in the liver tissue to study the oxidative stress. A histopathological evaluation was also performed to determine the extent of liver injury. Study results indicated that the activity of both the aminotransferases (AST and ALT), ALP and LDH increased significantly in Al2O3 treated rats compared to control animals. The increase was found to be more pronounced with Al2O3 - 30nm followed by Al2O3 - 40nm and Al2O3 - bulk treated rats in a dose dependent manner. However reduced glutathione content showed a decline in the activity. Ultra structural assessment showed significant morphological changes in the liver tissue in accordance with biochemical parameters. Taken together, the results of this study demonstrated that Al2O3 is hepatotoxic and the smaller size of this nanomaterial appeared to be the most toxic while the compound in the bulk form seemed to be the least toxic.
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Affiliation(s)
- S. Anitha Kumari
- Department of Zoology, University College for Women, Koti, Hyderabad, India
| | | | - Anita K. Patlolla
- NIH – RCMI Center for Environmental Health, College of Science, Engineering and Technology, Jackson State University, Jackson, MS, USA
- Department of Biology, Jackson State University, Jackson, MS, USA
| | - Paul B. Tchounwou
- NIH – RCMI Center for Environmental Health, College of Science, Engineering and Technology, Jackson State University, Jackson, MS, USA
- Department of Biology, Jackson State University, Jackson, MS, USA
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Yang C, Lv T, Yan H, Wu G, Li H. Glyoxal-Urea-Formaldehyde Molecularly Imprinted Resin as Pipette Tip Solid-Phase Extraction Adsorbent for Selective Screening of Organochlorine Pesticides in Spinach. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:9650-9656. [PMID: 26449689 DOI: 10.1021/acs.jafc.5b02762] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A new kind of glyoxal-urea-formaldehyde molecularly imprinted resin (GUF-MIR) was synthesized by a glyoxal-urea-formaldehyde (GUF) gel imprinting method with 4,4'-dichlorobenzhydrol as a dummy template. The obtained GUF-MIR was characterized by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FT-IR) and applied as a selective adsorbent of miniaturized pipet tip solid-phase extraction (PT-SPE) for the separation and extraction of three organochlorine pesticides (dicofol (DCF), dichlorodiphenyl dichloroethane (DDD), and tetradifon) in spinach samples. The proposed pretreatment procedures of spinach samples involved only 5.0 mg of GUF-MIR, 0.7 mL of MeOH-H2O (1:1, v/v) (washing solvent), and 0.6 mL of cyclohexane-ethyl acetate (9:1, v/v) (elution solvent). In comparison with other adsorbents (such as silica gel, C18, NH2-silica gel, and neutral alumina (Al2O3-N)), GUF-MIR showed higher adsorption and purification capacity for DCF, DDD, and tetradifon in aqueous solution. The average recoveries at three spiked levels ranged from 89.1% to 101.9% with relative standard deviations (RSDs) ≤ 7.1% (n = 3). The presented GUF-MIR-PT-SPE method combines the advantages of molecularly imprinted polymers (MIPs), GUF, and PT-SPE and can be used in polar solutions with high affinity and selectivity to the analytes in complex samples.
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Affiliation(s)
- Chen Yang
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Department of Preventive Medicine and Health Management, Hebei University and ‡Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, College of Pharmacy, Hebei University , Baoding 071002, China
| | - Tianwei Lv
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Department of Preventive Medicine and Health Management, Hebei University and ‡Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, College of Pharmacy, Hebei University , Baoding 071002, China
| | - Hongyuan Yan
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Department of Preventive Medicine and Health Management, Hebei University and ‡Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, College of Pharmacy, Hebei University , Baoding 071002, China
| | - Gaochan Wu
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Department of Preventive Medicine and Health Management, Hebei University and ‡Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, College of Pharmacy, Hebei University , Baoding 071002, China
| | - Haonan Li
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Department of Preventive Medicine and Health Management, Hebei University and ‡Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, College of Pharmacy, Hebei University , Baoding 071002, China
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Reddy BP, Vijayakumar V, Arasu MV, Al-Dhabi NA. γ-Alumina Nanoparticle Catalyzed Efficient Synthesis of Highly Substituted Imidazoles. Molecules 2015; 20:19221-35. [PMID: 26506334 PMCID: PMC6332066 DOI: 10.3390/molecules201019221] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2015] [Revised: 10/11/2015] [Accepted: 10/14/2015] [Indexed: 11/16/2022] Open
Abstract
γ-Alumina nano particle catalyzed multi component reaction of benzil, arylaldehyde and aryl amines afforded the highly substituted 1,2,4,5-tetraaryl imidazoles with good to excellent yield in less reaction time under the sonication as well as the conventional methods. Convenient operational simplicity, mild conditions and the reusability of catalyst were the other advantages of this developed protocol.
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Affiliation(s)
| | | | - Mariadhas Valan Arasu
- Department of Botany and Microbiology, Addiriyah Chair for Environmental Studies, College of Science, King Saud University, P. O. Box 2455, Riyadh 11451, Saudi Arabia.
| | - Naif Abdullah Al-Dhabi
- Department of Botany and Microbiology, Addiriyah Chair for Environmental Studies, College of Science, King Saud University, P. O. Box 2455, Riyadh 11451, Saudi Arabia.
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25
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Periasamy VS, Athinarayanan J, Alshatwi AA. Aluminum oxide nanoparticles alter cell cycle progression throughCCND1andEGR1gene expression in human mesenchymal stem cells. Biotechnol Appl Biochem 2015; 63:320-7. [DOI: 10.1002/bab.1368] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2014] [Accepted: 01/22/2015] [Indexed: 11/05/2022]
Affiliation(s)
- Vaiyapuri Subbarayan Periasamy
- Nanobiotechnology and Molecular Biology Research Laboratory, Department of Food Science and Nutrition, College of Food Science and Agriculture; King Saud University; Riyadh Kingdom of Saudi Arabia
| | - Jegan Athinarayanan
- Nanobiotechnology and Molecular Biology Research Laboratory, Department of Food Science and Nutrition, College of Food Science and Agriculture; King Saud University; Riyadh Kingdom of Saudi Arabia
| | - Ali A. Alshatwi
- Nanobiotechnology and Molecular Biology Research Laboratory, Department of Food Science and Nutrition, College of Food Science and Agriculture; King Saud University; Riyadh Kingdom of Saudi Arabia
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Srikanth K, Mahajan A, Pereira E, Duarte AC, Venkateswara Rao J. Aluminium oxide nanoparticles induced morphological changes, cytotoxicity and oxidative stress in Chinook salmon (CHSE-214) cells. J Appl Toxicol 2015; 35:1133-40. [PMID: 25875951 DOI: 10.1002/jat.3142] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Revised: 01/15/2015] [Accepted: 02/03/2015] [Indexed: 12/21/2022]
Abstract
Aluminium oxide nanoparticles (Al2 O3 NPs) are increasingly used in diverse applications that has raised concern about their safety. Recent studies suggested that Al2 O3 NPs induced oxidative stress may be the cause of toxicity in algae, Ceriodaphnia dubia, Caenorhabditis elegans and Danio rerio. However, there is paucity on the toxicity of Al2 O3 NPs on fish cell lines. The current study was aimed to investigate Al2 O3 NPs induced cytotoxicity, oxidative stress and morphological abnormality of Chinnok salmon cells (CHSE-214). A dose-dependent decline in cell viability was observed in CHSE-214 cells exposed to Al2 O3 NPs. Oxidative stress induced by Al2 O3 NPs in CHSE-214 cells has resulted in the significant reduction of superoxide dismutase, catalase and glutathione in a dose-dependent manner. However, a significant increase in glutathione sulfo-transferase and lipid peroxidation was observed in CHSE-214 cells exposed to Al2 O3 NPs in a dose-dependent manner. Significant morphological changes in CHSE-214 cells were observed when exposed to Al2 O3 NPs at 6, 12 and 24 h. The cells started to detach and appear spherical at 6 h followed by loss of cellular contents resulting in the shrinking of the cells. At 24 h, the cells started to disintegrate and resulted in cell death. Our data demonstrate that Al2 O3 NPs induce cytotoxicity and oxidative stress in a dose-dependent manner in CHSE-214 cells. Thus, our current work may serve as a base-line study for future evaluation of toxicity studies using CHSE-214 cells.
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Affiliation(s)
- Koigoora Srikanth
- CESAM-Centre for Environmental and Marine Studies & Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal.,Department of Bioresource Sciences, Andong National University, Andong, Republic of Korea.,Toxicology Unit, Biology Division, Indian Institute of Chemical Technology, Hyderabad, 500007, India
| | - Amit Mahajan
- Department of Materials and Ceramics Engineering, CIECO, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Eduarda Pereira
- CESAM-Centre for Environmental and Marine Studies & Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Armando Costa Duarte
- CESAM-Centre for Environmental and Marine Studies & Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Janapala Venkateswara Rao
- Toxicology Unit, Biology Division, Indian Institute of Chemical Technology, Hyderabad, 500007, India
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27
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Ogawa M, Kayama F. A study of the association between urinary aluminum concentration and pre-clinical findings among aluminum-handling and non-handling workers. J Occup Med Toxicol 2015; 10:13. [PMID: 25866547 PMCID: PMC4393619 DOI: 10.1186/s12995-015-0055-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Accepted: 03/17/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Aluminum is considered to be a relatively safe metal for humans. However, there are some reports that aluminum can be toxic to humans and animals. In order to estimate the toxicity of aluminum with respect to humans, we measured the aluminum concentration in urine of aluminum-handling and non-handling workers and investigated the relationships between their urinary aluminum concentrations and pre-clinical findings. METHODS Twenty-three healthy aluminum-handling workers and 10 healthy non-aluminum-handling workers participated in this study. Their medical examinations, which were otherwise unremarkable, included the collection of urine and blood. Urinary aluminum levels were analyzed using ICP analysis. As pre-clinical tests, we measured KL-6, SP-D, TRCP-5b, IL-6, and IL-8 in blood and δ-ALA and β2-microglobulin in urine. These were considered to be lung, bone, kidney and inflammation markers. Moreover, we measured 8-OHdG in urine as an oxidative DNA damage marker. RESULTS The aluminum concentration in urine ranged from 6.9 to 55.1 μg/g cre (median: 20.1 μg/g cre) in the aluminum-handling workers and from 5.6 to 15.6 μg/g cre (median: 8.8 μg/g cre) in the non-aluminum-handling workers, with a significant difference between them. In the pre-clinical findings, there were no significant differences between these two groups except in the case of δ-ALA. However, there were no significant relationships between aluminum concentration and the pre-clinical findings, work years, age or 8-OHdG in the aluminum-handling workers. CONCLUSIONS While the excretion of aluminum in urine was elevated in aluminum-handling workers, our findings suggest that low-dose aluminum is not directly harmful to humans, at least when workers' urinary aluminum concentration is below 55 μg/g cre.
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Affiliation(s)
- Masanori Ogawa
- Health Service Center, Jichi Medical University, 3311-1, Yakushiji, Shimotsuke Tochigi, 329-0498 Japan
| | - Fujio Kayama
- Department of Environmental and Preventive Medicine, Jichi Medical University, 3311-1, Yakushiji, Shimotsuke Tochigi, 329-0498 Japan
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28
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Beyth N, Houri-Haddad Y, Domb A, Khan W, Hazan R. Alternative antimicrobial approach: nano-antimicrobial materials. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2015; 2015:246012. [PMID: 25861355 PMCID: PMC4378595 DOI: 10.1155/2015/246012] [Citation(s) in RCA: 352] [Impact Index Per Article: 39.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Accepted: 02/23/2015] [Indexed: 12/17/2022]
Abstract
Despite numerous existing potent antibiotics and other antimicrobial means, bacterial infections are still a major cause of morbidity and mortality. Moreover, the need to develop additional bactericidal means has significantly increased due to the growing concern regarding multidrug-resistant bacterial strains and biofilm associated infections. Consequently, attention has been especially devoted to new and emerging nanoparticle-based materials in the field of antimicrobial chemotherapy. The present review discusses the activities of nanoparticles as an antimicrobial means, their mode of action, nanoparticle effect on drug-resistant bacteria, and the risks attendant on their use as antibacterial agents. Factors contributing to nanoparticle performance in the clinical setting, their unique properties, and mechanism of action as antibacterial agents are discussed in detail.
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Affiliation(s)
- Nurit Beyth
- Department of Prosthodontics, The Hebrew University-Hadassah School of Dental Medicine, P.O. Box 12272, 91120 Jerusalem, Israel
| | - Yael Houri-Haddad
- Department of Prosthodontics, The Hebrew University-Hadassah School of Dental Medicine, P.O. Box 12272, 91120 Jerusalem, Israel
| | - Avi Domb
- Department of Medicinal Chemistry, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, P.O. Box 12065, 91120 Jerusalem, Israel
| | - Wahid Khan
- Department of Pharmaceutics, National Institute of Pharmaceutical Education & Research (NIPER), Balanagar, Hyderabad 500 037, India
| | - Ronen Hazan
- Institute of Dental Sciences, The Hebrew University-Hadassah School of Dental Medicine, P.O. Box 12272, 91120 Jerusalem, Israel
- IYAR, The Israeli Institute for Advanced Research, Tel Aviv, Israel
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29
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Nolte TM, Kettler K, Meesters JAJ, Hendriks AJ, van de Meent D. A semi-empirical model for transport of inorganic nanoparticles across a lipid bilayer: implications for uptake by living cells. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2015; 34:488-496. [PMID: 25470256 DOI: 10.1002/etc.2812] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Revised: 05/17/2014] [Accepted: 11/16/2014] [Indexed: 06/04/2023]
Abstract
Due to increasing application, release of nanoparticles (NPs) and nanomaterials into the environment becomes likely. Knowledge about NP uptake in organisms is crucial for risk assessment including estimations on the behavior of NPs based on their physicochemical properties. In the present study, the authors have applied current scientific knowledge to construct a mathematical model, which estimates the transport of NPs through a model biological membrane. The semi-empirical model developed showed all parameters studied to substantially affect the agglomeration of the NPs in suspension, thereby also affecting passive transport. The authors quantified the effects of pH, ionic strength, organic matter concentration of medium, and NP size of several inorganic NPs on the permeation through the lipid membrane. Model outcomes and experimental results described in literature were strongly correlated for several metal oxide NPs. With caution, the model may be used to explain some of the existing variance in nano-uptake and toxicity experiments.
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Affiliation(s)
- Tom M Nolte
- Radboud University Nijmegen, Institute for Water and Wetland Research, Department of Environmental Science, Nijmegen, The Netherlands
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30
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Demir E, Akça H, Turna F, Aksakal S, Burgucu D, Kaya B, Tokgün O, Vales G, Creus A, Marcos R. Genotoxic and cell-transforming effects of titanium dioxide nanoparticles. ENVIRONMENTAL RESEARCH 2015; 136:300-308. [PMID: 25460650 DOI: 10.1016/j.envres.2014.10.032] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Revised: 10/16/2014] [Accepted: 10/27/2014] [Indexed: 06/04/2023]
Abstract
The in vitro genotoxic and the soft-agar anchorage independent cell transformation ability of titanium dioxide nanoparticles (nano-TiO2) and its microparticulated form has been evaluated in human embryonic kidney (HEK293) and in mouse embryonic fibroblast (NIH/3T3) cells. Nano-TiO2 of two different sizes (21 and 50 nm) were used in this study. The comet assay, with and without the use of FPG enzyme, the micronucleus assay and the soft-agar colony assay were used. For both the comet assay and the frequency of micronuclei a statistically significant induction of DNA damage, was observed at the highest dose tested (1000 µg/mL). No oxidative DNA damage induction was observed when the comet assay was complemented with the use of FPG enzyme. Furthermore, long-term exposure to nano-TiO2 has also proved to induce cell-transformation promoting cell-anchorage independent growth in soft-agar. Results were similar for the two nano-TiO2 sizes. Negative results were obtained when the microparticulated form of TiO2 was tested, indicating the existence of important differences between the microparticulated and nanoparticulated forms. As a conclusion it should be indicated that the observed genotoxic/tranforming effects were only detected at the higher dose tested (1000 µg/mL) what play down the real risk of environmental exposures to this nanomaterial.
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Affiliation(s)
- Eşref Demir
- Akdeniz University, Faculty of Sciences, Department of Biology, 07058 Antalya, Turkey; Grup de Mutagènesi, Departament de Genètica i de Microbiologia, Facultat de Biociències, Universitat Autònoma de Barcelona, Campus de Bellaterra, 08193 Cerdanyola del Vallès, Spain
| | - Hakan Akça
- Medical Biology Department, School of Medicine, Pamukkale University, Kinikli, Denizli, Turkey
| | - Fatma Turna
- Akdeniz University, Faculty of Sciences, Department of Biology, 07058 Antalya, Turkey
| | - Sezgin Aksakal
- Akdeniz University, Faculty of Sciences, Department of Biology, 07058 Antalya, Turkey
| | - Durmuş Burgucu
- Antalya Technopark Babylife Cord Blood Bank and Stem Cell Research Center, 07058 Antalya, Turkey
| | - Bülent Kaya
- Akdeniz University, Faculty of Sciences, Department of Biology, 07058 Antalya, Turkey
| | - Onur Tokgün
- Medical Biology Department, School of Medicine, Pamukkale University, Kinikli, Denizli, Turkey
| | - Gerard Vales
- Grup de Mutagènesi, Departament de Genètica i de Microbiologia, Facultat de Biociències, Universitat Autònoma de Barcelona, Campus de Bellaterra, 08193 Cerdanyola del Vallès, Spain
| | - Amadeu Creus
- Grup de Mutagènesi, Departament de Genètica i de Microbiologia, Facultat de Biociències, Universitat Autònoma de Barcelona, Campus de Bellaterra, 08193 Cerdanyola del Vallès, Spain; CIBER Epidemiología y Salud Pública, ISCIII, Spain
| | - Ricard Marcos
- Grup de Mutagènesi, Departament de Genètica i de Microbiologia, Facultat de Biociències, Universitat Autònoma de Barcelona, Campus de Bellaterra, 08193 Cerdanyola del Vallès, Spain; CIBER Epidemiología y Salud Pública, ISCIII, Spain.
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31
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Dai C, Huang Y, Zhou Y. [Research progress about the relationship between nanoparticles silicon dioxide and lung cancer]. ZHONGGUO FEI AI ZA ZHI = CHINESE JOURNAL OF LUNG CANCER 2014; 17:760-4. [PMID: 25342044 PMCID: PMC6000397 DOI: 10.3779/j.issn.1009-3419.2014.10.09] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Nano-silicon dioxide widely distributed in plastic, rubber, ceramics, paint, adhesives, and many other fields, and it is the product of coal combustion. A growing evidence shows that nano-silicon dioxide has certain correlation with respiratory system disease. In this paper, we synthesized existing researches of domestic and abroad, summarized the lung toxicity of nanoparticles. This article are reviewed from the physical and chemical properties of nanoparticles silicon dioxide, exposure conditions and environment, and the pathogenic mechanism of nano-silicon dioxide.
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Affiliation(s)
- Chun Dai
- Department of Cardio-Thoracic Surgery, the Third Affiliated Hospital of Kunming Medical University (Yunnan Province Tumor Hospital), Yunnan Key Laboratory of Lung Cancer Research, Kunming 650000, China
| | - Yunchao Huang
- Department of Cardio-Thoracic Surgery, the Third Affiliated Hospital of Kunming Medical University (Yunnan Province Tumor Hospital), Yunnan Key Laboratory of Lung Cancer Research, Kunming 650000, China
| | - Yongchun Zhou
- Department of Cardio-Thoracic Surgery, the Third Affiliated Hospital of Kunming Medical University (Yunnan Province Tumor Hospital), Yunnan Key Laboratory of Lung Cancer Research, Kunming 650000, China
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32
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Yan H, Yang C, Sun Y, Row KH. Ionic liquid molecularly imprinted polymers for application in pipette-tip solid-phase extraction coupled with gas chromatography for rapid screening of dicofol in celery. J Chromatogr A 2014; 1361:53-9. [DOI: 10.1016/j.chroma.2014.07.102] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Revised: 07/02/2014] [Accepted: 07/30/2014] [Indexed: 10/24/2022]
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Activation of Kaposi's sarcoma-associated herpesvirus (KSHV) by inhibitors of class III histone deacetylases: identification of sirtuin 1 as a regulator of the KSHV life cycle. J Virol 2014; 88:6355-67. [PMID: 24672028 DOI: 10.1128/jvi.00219-14] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
UNLABELLED Kaposi's sarcoma-associated herpesvirus (KSHV) establishes persistent latent infection in immunocompetent hosts. Disruption of KSHV latency results in viral lytic replication, which promotes the development of KSHV-related malignancies in immunocompromised individuals. While inhibitors of classes I and II histone deacetylases (HDACs) potently reactivate KSHV from latency, the role of class III HDAC sirtuins (SIRTs) in KSHV latency remains unclear. Here, we examined the effects of inhibitors of SIRTs, nicotinamide (NAM) and sirtinol, on KSHV reactivation from latency. Treatment of latently KSHV-infected cells with NAM or sirtinol induced transcripts and proteins of the master lytic transactivator RTA (ORF50), early lytic genes ORF57 and ORF59, and late lytic gene ORF65 and increased the production of infectious virions. NAM increased the acetylation of histones H3 and H4 as well as the level of the active histone H3 trimethyl Lys4 (H3K4me3) mark but decreased the level of the repressive histone H3 trimethyl Lys27 (H3K27me3) mark in the RTA promoter. Consistent with these results, we detected SIRT1 binding to the RTA promoter. Importantly, knockdown of SIRT1 was sufficient to increase the expression of KSHV lytic genes. Accordingly, the level of the H3K4me3 mark in the RTA promoter was increased following SIRT1 knockdown, while that of the H3K27me3 mark was decreased. Furthermore, SIRT1 interacted with RTA and inhibited RTA transactivation of its own promoter and that of its downstream target, the viral interleukin-6 gene. These results indicate that SIRT1 regulates KSHV latency by inhibiting different stages of viral lytic replication and link the cellular metabolic state with the KSHV life cycle. IMPORTANCE Kaposi's sarcoma-associated herpesvirus (KSHV) is the causal agent of several malignancies, including Kaposi's sarcoma, commonly found in immunocompromised patients. While latent infection is required for the development of KSHV-induced malignancies, viral lytic replication also promotes disease progression. However, the mechanism controlling KSHV latent versus lytic replication remains unclear. In this study, we found that class III histone deacetylases (HDACs), also known as SIRTs, whose activities are linked to the cellular metabolic state, mediate KSHV replication. Inhibitors of SIRTs can reactivate KSHV from latency. SIRTs mediate KSHV latency by epigenetically silencing a key KSHV lytic replication activator, RTA. We found that one of the SIRTs, SIRT1, binds to the RTA promoter to mediate KSHV latency. Knockdown of SIRT1 is sufficient to induce epigenetic remodeling and KSHV lytic replication. SIRT1 also interacts with RTA and inhibits RTA's transactivation function, preventing the expression of its downstream genes. Our results indicate that SIRTs regulate KSHV latency by inhibiting different stages of viral lytic replication and link the cellular metabolic state with the KSHV life cycle.
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Fajardo C, Saccà ML, Costa G, Nande M, Martin M. Impact of Ag and Al₂O₃ nanoparticles on soil organisms: in vitro and soil experiments. THE SCIENCE OF THE TOTAL ENVIRONMENT 2014; 473-474:254-61. [PMID: 24374587 DOI: 10.1016/j.scitotenv.2013.12.043] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Revised: 12/09/2013] [Accepted: 12/10/2013] [Indexed: 05/20/2023]
Abstract
In vitro analyses were conducted to assess the impact of Al2O3 and Ag nanoparticles on two common soil bacteria, Bacillus cereus and Pseudomonas stutzeri. Al2O3 nanoparticles did not show significant toxicity at any dose or time assayed, whereas exposure to 5 mg L(-1) Ag nanoparticles for 48 h caused bactericidal effects. Moreover, alterations at the morphological level were observed by transmission electron microscopy (TEM); Ag but not Al2O3 nanoparticles evoked the entrance of B. cereus cells in an early sporulation stage and both nanoparticles penetrated P. stutzeri cells. At the molecular level, a dramatic increase (8.2-fold) in katB gene expression was found in P. stutzeri following Al2O3 nanoparticles exposure, indicative of an oxidative stress-defence system enhancement in this bacterium. In the microcosm experiment, using two different natural soils, Al2O3 or Ag nanoparticles did not affect the Caenorhabditis elegans toxicity endpoints growth, survival, or reproduction. However, differences in microbial phylogenetic compositions were detected by fluorescence in situ hybridization (FISH). The use of katB- and pykA-based sequences showed that the microbial transcriptional response to nanoparticle exposure decreased, suggesting a decrease in cellular activity. These changes were attributable to both the nanoparticles treatment and soil characteristics, highlighting the importance of considering the soil matrix on a case by case basis.
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Affiliation(s)
- C Fajardo
- Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain.
| | - M L Saccà
- Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain; Campus de Excelencia Internacional de Moncloa, 28040 Madrid, Spain.
| | - G Costa
- Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain.
| | - M Nande
- Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain.
| | - M Martin
- Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain.
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35
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Demir E, Akça H, Kaya B, Burgucu D, Tokgün O, Turna F, Aksakal S, Vales G, Creus A, Marcos R. Zinc oxide nanoparticles: genotoxicity, interactions with UV-light and cell-transforming potential. JOURNAL OF HAZARDOUS MATERIALS 2014; 264:420-429. [PMID: 24316814 DOI: 10.1016/j.jhazmat.2013.11.043] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Revised: 11/12/2013] [Accepted: 11/14/2013] [Indexed: 06/02/2023]
Abstract
The in vitro genotoxic and the soft agar anchorage independent cell transformation ability of zinc oxide nanoparticles (NPs) and its bulky forms have been evaluated in human embryonic kidney (HEK293) and in mouse embryonic fibroblast (NIH/3T3) cells, either alone or in combination with UVB-light. The comet assay, with and without the use of FPG and Endo III enzymes, the micronucleus assay and the soft-agar colony assay were used. For the comet assay a statistically significant induction of DNA damage, with and without the enzymes, were observed up of 100μg/mL. ZnO NPs were able to increase significantly the frequency of micronuclei, and similar results were observed in the cell transformation assay where such NPs were able to induce cell-anchorage independent growth. These effects were observed at doses up 100μg/mL. Although UVB-light was able to induce genotoxic damage and cell-anchorage growth, a significant antagonist interaction effect was observed in combination with ZnO NPs. These in vitro results, obtained with the selected cell lines, contribute to increase our genotoxicity database on the ZnO NPs effects as well as to open the discussion about their risk in photo-protection sun screens.
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Affiliation(s)
- Eşref Demir
- Akdeniz University, Faculty of Sciences, Department of Biology, 07058 Antalya, Turkey
| | - Hakan Akça
- Medical Biology Department, School of Medicine, Pamukkale University, Kinikli, Denizli, Turkey
| | - Bülent Kaya
- Akdeniz University, Faculty of Sciences, Department of Biology, 07058 Antalya, Turkey
| | - Durmuş Burgucu
- Akdeniz University, Faculty of Medicine, Department of Physiology, 07058 Antalya, Turkey
| | - Onur Tokgün
- Medical Biology Department, School of Medicine, Pamukkale University, Kinikli, Denizli, Turkey
| | - Fatma Turna
- Akdeniz University, Faculty of Sciences, Department of Biology, 07058 Antalya, Turkey
| | - Sezgin Aksakal
- Akdeniz University, Faculty of Sciences, Department of Biology, 07058 Antalya, Turkey
| | - Gerard Vales
- Grup de Mutagènesi, Departament de Genètica i de Microbiologia, Facultat de Biociències, Universitat Autònoma de Barcelona, Campus de Bellaterra, 08193 Cerdanyola del Vallès, Spain
| | - Amadeu Creus
- Grup de Mutagènesi, Departament de Genètica i de Microbiologia, Facultat de Biociències, Universitat Autònoma de Barcelona, Campus de Bellaterra, 08193 Cerdanyola del Vallès, Spain; CIBER Epidemiología y Salud Pública, ISCIII, Spain
| | - Ricard Marcos
- Grup de Mutagènesi, Departament de Genètica i de Microbiologia, Facultat de Biociències, Universitat Autònoma de Barcelona, Campus de Bellaterra, 08193 Cerdanyola del Vallès, Spain; CIBER Epidemiología y Salud Pública, ISCIII, Spain.
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Hussain S, Garantziotis S, Rodrigues-Lima F, Dupret JM, Baeza-Squiban A, Boland S. Intracellular signal modulation by nanomaterials. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2014; 811:111-34. [PMID: 24683030 DOI: 10.1007/978-94-017-8739-0_7] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A thorough understanding of the interactions of nanomaterials with biological systems and the resulting activation of signal transduction pathways is essential for the development of safe and consumer friendly nanotechnology. Here we present an overview of signaling pathways induced by nanomaterial exposures and describe the possible correlation of their physicochemical characteristics with biological outcomes. In addition to the hierarchical oxidative stress model and a review of the intrinsic and cell-mediated mechanisms of reactive oxygen species (ROS) generating capacities of nanomaterials, we also discuss other oxidative stress dependent and independent cellular signaling pathways. Induction of the inflammasome, calcium signaling, and endoplasmic reticulum stress are reviewed. Furthermore, the uptake mechanisms can be of crucial importance for the cytotoxicity of nanomaterials and membrane-dependent signaling pathways have also been shown to be responsible for cellular effects of nanomaterials. Epigenetic regulation by nanomaterials, effects of nanoparticle-protein interactions on cell signaling pathways, and the induction of various cell death modalities by nanomaterials are described. We describe the common trigger mechanisms shared by various nanomaterials to induce cell death pathways and describe the interplay of different modalities in orchestrating the final outcome after nanomaterial exposures. A better understanding of signal modulations induced by nanomaterials is not only essential for the synthesis and design of safer nanomaterials but will also help to discover potential nanomedical applications of these materials. Several biomedical applications based on the different signaling pathways induced by nanomaterials are already proposed and will certainly gain a great deal of attraction in the near future.
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Affiliation(s)
- Salik Hussain
- Clinical Research Program, National Institute of Environmental Health Sciences (NIEHS), National Institute of Health (NIH), Research Triangle Park, NC, USA,
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Morsy GM, Abou El-Ala KS, Ali AA. Studies on fate and toxicity of nanoalumina in male albino rats. Toxicol Ind Health 2013; 32:200-14. [DOI: 10.1177/0748233713498462] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The present work aimed to evaluate the oxidative stress of nanoalumina (aluminium oxide nanoparticles, Al2O3-NPs) with a diameter <13 nm (9.83 ± 1.61 nm) as assessed by the perturbations in the enzymatic and non-enzymatic antioxidants as well as lipid peroxidation (LPO) in the brain, liver and kidney of male albino rats, after 2 days of single acute dose (3.9 or 6.4 or 8.5 g/kg) injection and a sublethal dose of 1.3 g/kg once in 2 days for a period of 28 days. According to two-way analysis of variance, superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPx) activities as well as the levels of glutathione (GSH) and LPO were significantly affected by the injected doses, organs and their interactions. On the other hand, in sublethal experiments, these parameters were affected by the experimental periods, organs and their interactions. Regression analysis confirmed that the activities of SOD, CAT, GPx and GSH levels in the brain, liver and kidney were inversely proportional with the acute doses, the experimental periods, and aluminium accumulated in these tissues, whereas the levels of LPO exhibited a positive relationship. Correlation coefficient indicated that oxidative stress mainly depends on aluminium accumulated in the studied organs, followed by injected doses and the experimental periods. In comparison with the corresponding controls, the acute and sublethal doses of Al2O3-NPs caused significant inhibition of the brain, hepatic and renal SOD, CAT, GPx activities and a severe marked reduction in the concentrations of GSH that were associated with a significant elevation in the levels of malondialdehyde (an indicator of LPO). In conclusion, our data indicated that rats injected with nanoalumina suffered from the oxidative stresses that were dose and time dependent. In addition, Al2O3-NPs released into the biospheres could be potentiating a risk to the environment and causing hazard effects on living organisms, including mammals.
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Affiliation(s)
- Gamal M Morsy
- Department of Zoology, Faculty of Science, Cairo University, Cairo, Egypt
| | | | - Atef A Ali
- Department of Zoology, Faculty of Science, Cairo University, Cairo, Egypt
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Abstract
The sirtuin family has emerged as important regulators of diverse physiological and pathological events, including life-span extension, neurodegeneration, age-related disorders, obesity, heart disease, inflammation, and cancer. In mammals, there are 7 members (SIRT1-SIRT7) in the sirtuin family, with the function of SIRT1 being extensively studied in the past decade. SIRT1 can deacetylate histones and a number of nonhistone substrates, which are involved in multiple signaling pathways. Numerous studies have suggested that SIRT1 could act as either a tumor suppressor or tumor promoter depending on its targets in specific signaling pathways or in specific cancers. This review highlights the major pathways regulated by SIRT1 involved in tumorigenesis.
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Affiliation(s)
- Zhenghong Lin
- Northwestern University Feinberg School of Medicine, Chicago, IL, USA
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The involvement of SIRT1 and transcription factor NF-κB (p50/p65) in regulation of porcine ovarian cell function. Anim Reprod Sci 2013; 140:180-8. [PMID: 23886618 DOI: 10.1016/j.anireprosci.2013.06.013] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2012] [Revised: 05/28/2013] [Accepted: 06/28/2013] [Indexed: 02/04/2023]
Abstract
The role of either mTOR system/enzyme sirtuin1 (SIRT1) or transcription factor NF-κB in the direct control of ovarian function has not been estabished. The aim of our in vitro experiments was to examine the involvement of SIRT1 and the p65 and p50 subunits of NFκB in control of porcine ovarian granulosa cell functions and the interrelationships between SIRT1, NFκB (p65, p50) 30 and FSH in the ovary. Monolayers of primary granulosa cells were transfected with gene constructs encoding either SIRT1 or p65 and p50, and thereafter cultured with, or without, addition of FSH. The accumulation of markers of proliferation (cyclin B1 and cyclin-dependent protein kinase Cdc2/p34) and proteins p50, p65 and SIRT1 in the cells was detected by using SDS-PAGE/Western immunoblotting and immunocytochemistry. The secretion of progesterone (P4) and insulin-like growth factor I (IGF-I) was measured by using radioimmunoassay. It was observed that transfection of cells with a SIRT1 gene construct promoted accumulation of proliferation markers, Cdc2/p34, cyclin B1, decreased accumulation of p50 and p65 and stimulated release of P4 and IGF-I. Co-transfection of cells with cDNA p50 and cDNA p65 enhanced the accumulation of SIRT1 and the release of P4 but did not influence the release of IGF-I. Adding FSH to the culture medium stimulated accumulation of both subunits of NF-κB, as well as accumulation of Cdc2/p34, cyclin B1 and release of both P4 and IGF-I. The ability of FSH to promote NF-κB accumulation, the similarity of the main effects of FSH, SIRT1 and NF-κB, as well as the inability of NF-κB to substantially modify the the majority of FSH effects suggest that SIRT1/NF-κB system could be a mediator of FSH action on ovarian cell functions. On the other hand, SIRT1 was able to inhibit NF-κB and to change stimulatory the effect of FSH on NF-κB from stimulatory to inhibitory. This could suggest the existence of negative feedback control of FSH/NF-κB system by high amounts of SIRT1. Our observations (1) confirm the previous data on proliferation, P4 and IGF-I release in ovarian cells and their up-regulation by FSH, (2) demonstrate the presence of SIRT1, NF-κB/p50 and NF-κB/p65 in these cells, (3) show for the first time the involvement of SIRT1 and NF-κB in direct control of proliferation and secretory activity of ovarian cells, (4) represent the first data on interrelationships between FSH, SIRT1 and NF-κB within the ovary.
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Biosafety Evaluation of Nanoparticles in View of Genotoxicity and Carcinogenicity Studies: A Systematic Review. ACTA ACUST UNITED AC 2013. [DOI: 10.4028/www.scientific.net/kem.543.200] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nanoparticles (NPs) are used in various forms in consumer products including, cosmetics, food packaging, textiles and also in air and water cleaning, production of electro chromic windows, or smart windows and gas sensors. Many NPs have also been evaluated for potential use in biomedical applications as efficient delivery carriers for cancer diagnosis and therapy. Nowadays, NPs are being developed to create fascinating nanotechnology products. To develop NPs for broad applications, potential risks to human health and the environment should be evaluated and taken into consideration. Again, to translate these nanomaterials to the clinic and industrial domains, their biosafety needs to be verified, particularly in terms of genotoxic and carcinogenic effects. To evaluate evidenced-based practices for NPs safety, we performed a systematic review of the published English-language literature. We performed a systematic keyword search of PubMed for original research articles pertaining to reports on assessment of risks due to carcinogenic and mutagenic effects by different NPs. We identified 362 original articles available for analysis. The included studies were published between 1993 and 2012. The in vivo or in vitro genotoxicity studies were performed on only 18 out of 148 kinds of NPs in industry today. Likewise, the carcinogenicity investigations were performed on only 14 out of 148 NPs. The 10 types of the NPs including some titanium, aluminium, carbon black and silver molecules were found to have both mutagenic and carcinogenic potential. The important finding was also that there is a lack of systematic assessment of the DNA damaging and carcinogenic potential of NPs in spite of their extensive use in nanotechnological applications.
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A high-confidence interaction map identifies SIRT1 as a mediator of acetylation of USP22 and the SAGA coactivator complex. Mol Cell Biol 2013; 33:1487-502. [PMID: 23382074 DOI: 10.1128/mcb.00971-12] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Although many functions and targets have been attributed to the histone and protein deacetylase SIRT1, a comprehensive analysis of SIRT1 binding proteins yielding a high-confidence interaction map has not been established. Using a comparative statistical analysis of binding partners, we have assembled a high-confidence SIRT1 interactome. Employing this method, we identified the deubiquitinating enzyme ubiquitin-specific protease 22 (USP22), a component of the deubiquitinating module (DUBm) of the SAGA transcriptional coactivating complex, as a SIRT1-interacting partner. We found that this interaction is highly specific, requires the ZnF-UBP domain of USP22, and is disrupted by the inactivating H363Y mutation within SIRT1. Moreover, we show that USP22 is acetylated on multiple lysine residues and that alteration of a single lysine (K129) within the ZnF-UBP domain is sufficient to alter interaction of the DUBm with the core SAGA complex. Furthermore, USP22-mediated recruitment of SIRT1 activity promotes the deacetylation of individual SAGA complex components. Our results indicate an important role of SIRT1-mediated deacetylation in regulating the formation of DUBm subcomplexes within the larger SAGA complex.
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Insulin induces neurite outgrowth via SIRT1 in SH-SY5Y cells. Neuroscience 2013; 238:371-80. [PMID: 23357110 DOI: 10.1016/j.neuroscience.2013.01.034] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2012] [Revised: 01/05/2013] [Accepted: 01/07/2013] [Indexed: 01/24/2023]
Abstract
Insulin plays diverse roles, including learning and memory, in the central nervous system. SIRT1 has been reported to be involved in the processes of normal learning, memory, and synaptic plasticity. However, whether insulin is directly involved in regulating SIRT1 expression in neurons or whether it affects synapses remains largely unknown. Here, we show that insulin promotes neurite outgrowth and increases SIRT1 expression in SH-SY5Y cells. LY294002, a phosphatidylinositol 3-kinase inhibitor, inhibited the expression of insulin-induced increases in SIRT1. Conversely, the downregulation of SIRT1 using a SIRT1 inhibitor and SIRT1-siRNA resulted in a significant reduction in the length of neurite outgrowth. Taken together, these results suggest that the regulation of SIRT1 by insulin is important for the neurite outgrowth of neuroblastoma cells.
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Piret JP, Jacques D, Audinot JN, Mejia J, Boilan E, Noël F, Fransolet M, Demazy C, Lucas S, Saout C, Toussaint O. Copper(II) oxide nanoparticles penetrate into HepG2 cells, exert cytotoxicity via oxidative stress and induce pro-inflammatory response. NANOSCALE 2012; 4:7168-7184. [PMID: 23070296 DOI: 10.1039/c2nr31785k] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The potential toxic effects of two types of copper(II) oxide (CuO) nanoparticles (NPs) with different specific surface areas, different shapes (rod or spheric), different sizes as raw materials and similar hydrodynamic diameter in suspension were studied on human hepatocarcinoma HepG2 cells. Both CuO NPs were shown to be able to enter into HepG2 cells and induce cellular toxicity by generating reactive oxygen species. CuO NPs increased the abundance of several transcripts coding for pro-inflammatory interleukins and chemokines. Transcriptomic data, siRNA knockdown and DNA binding activities suggested that Nrf2, NF-κB and AP-1 were implicated in the response of HepG2 cells to CuO NPs. CuO NP incubation also induced activation of MAPK pathways, ERKs and JNK/SAPK, playing a major role in the activation of AP-1. In addition, cytotoxicity, inflammatory and antioxidative responses and activation of intracellular transduction pathways induced by rod-shaped CuO NPs were more important than spherical CuO NPs. Measurement of Cu(2+) released in cell culture medium suggested that Cu(2+) cations released from CuO NPs were involved only to a small extent in the toxicity induced by these NPs on HepG2 cells.
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Affiliation(s)
- Jean-Pascal Piret
- URBC, Namur Nanosafety Center (NNC), Namur Research Institute for Life Sciences (NARILIS), University of Namur (FUNDP), 61 rue de Bruxelles, B-5000 Namur, Belgium.
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Alshatwi AA, Subbarayan PV, Ramesh E, Al-Hazzani AA, Alsaif MA, Alwarthan AA. Aluminium oxide nanoparticles induce mitochondrial-mediated oxidative stress and alter the expression of antioxidant enzymes in human mesenchymal stem cells. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2012; 30:1-10. [PMID: 23046173 DOI: 10.1080/19440049.2012.729160] [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
An urgent need for toxicological studies on aluminium oxide nanoparticles (Al(2) [Formula: see text]NPs) has arisen from their rapidly emerging range of applications in the food and agricultural sectors. Despite the widespread use of nanoscale aluminium and its composites in the food industry, there is a serious lack of information concerning the biological activities of Al(2) [Formula: see text]NPs (ANPs) and their impact on human health. In this preliminary study, the effects of ANPs on metabolic stress in human mesenchymal stem cells (hMSCs) were analysed. The results showed dose-dependent effects, including cellular toxicity. The mitochondrial membrane potential in the hMSCs decreased with increasing ANP concentrations after 24 h of exposure. The expression levels of oxidative stress-responsive enzymes were monitored by RT-PCR. The expression levels of CYP1A and POR were up-regulated in response to ANPs, and a significant down-regulation in the expression of the antioxidant enzyme SOD was observed. Further, dose-dependent changes in the mRNA levels of GSTM3, GPX and GSR were noted. These findings suggest that the toxicity of ANPs in hMSCs may be mediated through an increase in oxidative stress. The results of this study clearly demonstrate the nanotoxicological effects of ANPs on hMSCs, which will be useful for nanotoxicological indexing.
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Affiliation(s)
- Ali A Alshatwi
- Nanobiotechnology and Molecular Biology Research Lab, Department of Food Science and Nutrition, College of Food and Agricultural Sciences, Riyadh, Saudi Arabia.
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Abstract
Nanomaterials are now routinely used in technical as well as medical applications. The very physicochemical properties that favor nanomaterial application are the prime cause that these materials cannot be considered "generally safe." We are still far from predicting the toxicological profile of new nanoparticles, despite continuous attempts to establish a structure-function relation between the physical and chemical properties of nanoparticles and their interactions with biological systems. Herein, we summarize some basic concept to assess nanoparticle toxicity, death pathways, cell cycle, and oxidative stress in response to nanoparticle exposure of cells.
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Affiliation(s)
- Yu Pan
- Helmholtz Institute for Biomedical Engineering, RWTH Aachen University, Aachen, Germany
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Prabhakar PV, Reddy UA, Singh SP, Balasubramanyam A, Rahman MF, Indu Kumari S, Agawane SB, Murty USN, Grover P, Mahboob M. Oxidative stress induced by aluminum oxide nanomaterials after acute oral treatment in Wistar rats. J Appl Toxicol 2011; 32:436-45. [DOI: 10.1002/jat.1775] [Citation(s) in RCA: 98] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2011] [Revised: 09/26/2011] [Accepted: 10/20/2011] [Indexed: 12/21/2022]
Affiliation(s)
- P. V. Prabhakar
- Toxicology Unit; Indian Institute of Chemical Technology; Hyderabad; Andhra Pradesh; India
| | - Utkarsh A. Reddy
- Toxicology Unit; Indian Institute of Chemical Technology; Hyderabad; Andhra Pradesh; India
| | - S. P. Singh
- Toxicology Unit; Indian Institute of Chemical Technology; Hyderabad; Andhra Pradesh; India
| | - A. Balasubramanyam
- Toxicology Unit; Indian Institute of Chemical Technology; Hyderabad; Andhra Pradesh; India
| | - M. F. Rahman
- Toxicology Unit; Indian Institute of Chemical Technology; Hyderabad; Andhra Pradesh; India
| | - S. Indu Kumari
- Toxicology Unit; Indian Institute of Chemical Technology; Hyderabad; Andhra Pradesh; India
| | - Sachin B. Agawane
- Department of Pharmacology; Indian Institue of Chemical Technology; Hyderabad; Andhra Pradesh; India
| | - U. S. N. Murty
- Toxicology Unit; Indian Institute of Chemical Technology; Hyderabad; Andhra Pradesh; India
| | - Paramjit Grover
- Toxicology Unit; Indian Institute of Chemical Technology; Hyderabad; Andhra Pradesh; India
| | - Mohammed Mahboob
- Toxicology Unit; Indian Institute of Chemical Technology; Hyderabad; Andhra Pradesh; India
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Radziun E, Dudkiewicz Wilczyńska J, Książek I, Nowak K, Anuszewska E, Kunicki A, Olszyna A, Ząbkowski T. Assessment of the cytotoxicity of aluminium oxide nanoparticles on selected mammalian cells. Toxicol In Vitro 2011; 25:1694-700. [DOI: 10.1016/j.tiv.2011.07.010] [Citation(s) in RCA: 105] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2011] [Revised: 06/22/2011] [Accepted: 07/18/2011] [Indexed: 11/30/2022]
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48
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Yu S, Rui Q, Cai T, Wu Q, Li Y, Wang D. Close association of intestinal autofluorescence with the formation of severe oxidative damage in intestine of nematodes chronically exposed to Al(2)O(3)-nanoparticle. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2011; 32:233-241. [PMID: 21843804 DOI: 10.1016/j.etap.2011.05.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2010] [Revised: 05/14/2011] [Accepted: 05/28/2011] [Indexed: 05/31/2023]
Abstract
In nematodes, acute exposure (24-h) to 8.1-30.6 mg/L Al(2)O(3)-nanoparticles (NPs) or Al(2)O(3) did not influence intestinal autofluorescence, whereas chronic exposure (10-d) to Al(2)O(3)-NPs at concentrations of 8.1-30.6 mg/L or Al(2)O(3) at concentrations of 23.1-30.6 mg/L induced significant increases of intestinal lipofuscin accumulation, and formation of severe stress response and oxidative damage in intestines. Moreover, significant differences of intestinal autofluorescence, stress response and oxidative damage in intestines of Al(2)O(3)-NPs exposed nematodes from those in Al(2)O(3) exposed nematodes were detected at examined concentrations. Oxidative damage in intestine was significantly correlated with intestinal autofluorescence in exposed nematodes, and oxidative damage in intestine was more closely associated with intestinal autofluorescence in nematodes exposed to Al(2)O(3)-NPs than exposed to Al(2)O(3). Thus, chronic exposure to Al(2)O(3)-NPs may cause adverse effects on intestinal lipofuscin accumulation by inducing the formation of more severe oxidative stress in intestines than exposure to Al(2)O(3) in nematodes.
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Affiliation(s)
- Shunhui Yu
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School of Southeast University, Nanjing 210009, China
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49
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Li L, Zhang HN, Chen HZ, Gao P, Zhu LH, Li HL, Lv X, Zhang QJ, Zhang R, Wang Z, She ZG, Zhang R, Wei YS, Du GH, Liu DP, Liang CC. SIRT1 acts as a modulator of neointima formation following vascular injury in mice. Circ Res 2011; 108:1180-9. [PMID: 21474819 DOI: 10.1161/circresaha.110.237875] [Citation(s) in RCA: 144] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
RATIONALE Vascular smooth muscle cell (VSMC) proliferation and migration are crucial events involved in the pathophysiology of vascular diseases. Sirtuin 1 (SIRT1), a class III histone deacetylase (HDAC), has been reported to have the function of antiatherosclerosis, but its role in neointima formation remains unknown. OBJECTIVE The present study was designed to investigate the role of SIRT1 in the regulation of neointima formation and to elucidate the underlying mechanisms. METHODS AND RESULTS A decrease in SIRT1 expression was observed following carotid artery ligation. smooth muscle cell (SMC)-specific human SIRT1 transgenic (Tg) mice were generated. SIRT1 overexpression substantially inhibited neointima formation after carotid artery ligation or carotid artery wire injury. In the intima of injured carotid arteries, VSMC proliferation (proliferating cell nuclear antigen (PCNA)-positive cells) was significantly reduced. SIRT1 overexpression markedly inhibited VSMC proliferation and migration and induced cell cycle arrest at G1/S transition in vitro. Accordingly, SIRT1 overexpression decreased the induction of cyclin D1 and matrix metalloproteinase-9 (MMP-9) expression by treatment with serum and TNF-α, respectively, whereas RNAi knockdown of SIRT1 resulted in the opposite effect. Decreased cyclin D1 and MMP-9 expression/activity were also observed in injured carotid arteries from SMC-SIRT1 Tg mice. Furthermore, 2 targets of SIRT1, c-Fos and c-Jun, were involved in the downregulation of cyclin D1 and MMP-9 expression. CONCLUSIONS Our findings demonstrate the inhibitory effect of SIRT1 on the VSMC proliferation and migration that underlie neointima formation and implicate SIRT1 as a potential target for intervention in vascular diseases.
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Affiliation(s)
- Li Li
- National Laboratory of Medical Molecular Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, No 5 Dong Dan San Tiao, Beijing 100005, People's Republic of China
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50
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Kim YJ, Yang SI, Ryu JC. Cytotoxicity and genotoxicity of nano-silver in mammalian cell lines. Mol Cell Toxicol 2010. [DOI: 10.1007/s13273-010-0018-1] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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