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Ansari MA, Shukla AK, Oves M, Khan HM. Electron microscopic ultrastructural study on the toxicological effects of AgNPs on the liver, kidney and spleen tissues of albino mice. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2016; 44:30-43. [PMID: 27100208 DOI: 10.1016/j.etap.2016.04.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 04/02/2016] [Accepted: 04/10/2016] [Indexed: 06/05/2023]
Abstract
The present study deals with the intraperitoneal administration of 500, 1000, 3000, and 5000mg/kg of AgNPs in albino mice for 28 days to evaluate the potential toxicological effects of AgNPs on blood biochemical parameters and to investigate the light and electron microscopic histopathological alterations on three major targets organs i.e., liver, kidney and spleen. The AgNPs was well tolerated and no mortality was observed even at the highest dose i.e., 5000mg/kg. Mice treated with 500 and 1000mg/kg AgNPs did not show significant behavioral, biochemical and ultrastructural pathological changes. Mice treated with 1000mg/kg AgNPs produces little ultrastructural alteration in liver, kidney and spleen. However, mice treated with 3000 and 5000mg/kg AgNPs revealed significant changes in biochemical parameters. Electron microscopic ultrastructural investigation of liver and kidney shows that the administration of 3000 and 5000mg/kg AgNPs revealed irregularity in the nuclear membrane, nuclear chromatin condensations, degenerated hepatocytes, swollen and pleomorphic mitochondria with distorted cristae, extensive dilation of rough endoplasmic reticulum, destructed cytoplasm, hypertrophied and fused podocytes and thickened basement membrane in the endothelial cells of the proximal tubules. The spleen sections at 3000 and 5000mg/kg AgNPs revealed megakaryocytes hyperplasia, lobulations, invaginations and folding of nuclei and nuclear membrane. The present research indicates that AgNPs were well tolerated at the lower doses, but significant alterations in liver, kidney and spleen were observed at the higher doses tested. It is, therefore, suggested that further studies are needed for the minimization of the observed side effects, especially at higher doses before AgNPs being applied in pharmaceutical application.
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Affiliation(s)
- Mohammad Azam Ansari
- Dept. of Clinical Laboratories, College of Applied Medical Science, Buraydah College, P.O. Box 6699 Buraydah 51452 Saudi Arabia, Saudi Arabia; Nanotechnology and Antimicrobial Drug Resistance Research Laboratory, Department of Microbiology, Jawaharlal Nehru Medical College & Hospital, Aligarh Muslim University, Aligarh-202002, U.P., India.
| | - Arun Kumar Shukla
- King Abdullah Institute for Nanotechnology, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Mohammad Oves
- Center of Excellence in Environmental Studies, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Haris M Khan
- Nanotechnology and Antimicrobial Drug Resistance Research Laboratory, Department of Microbiology, Jawaharlal Nehru Medical College & Hospital, Aligarh Muslim University, Aligarh-202002, U.P., India
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Shayani Rad M, Khameneh B, Sabeti Z, Mohajeri SA, Fazly Bazzaz BS. Antibacterial Activity of Silver Nanoparticle-Loaded Soft Contact Lens Materials: The Effect of Monomer Composition. Curr Eye Res 2016; 41:1286-1293. [DOI: 10.3109/02713683.2015.1123726] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Maryam Shayani Rad
- Student Research Committee (SRC), Mashhad University of Medical Sciences, Mashhad, Iran
- Targeted Drug Delivery Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Bahman Khameneh
- Department of Pharmaceutical Control, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Zahra Sabeti
- Biotechnology Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Seyed Ahmad Mohajeri
- Targeted Drug Delivery Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Bibi Sedigheh Fazly Bazzaz
- Biotechnology Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
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Kolle SN, Sauer UG, Rey Moreno MC, Teubner W, Wohlleben W, Landsiedel R. Eye irritation testing of nanomaterials using the EpiOcular™ eye irritation test and the bovine corneal opacity and permeability assay. Part Fibre Toxicol 2016; 13:18. [PMID: 27083156 PMCID: PMC4833924 DOI: 10.1186/s12989-016-0128-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Accepted: 04/01/2016] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Assessment of eye irritation hazard has long been a core requirement in any chemical legislation. Nevertheless, publications focussing on the eye damaging potential of nanomaterials are scarce. Traditionally, eye irritation testing was performed using rabbits. The OECD Test Guideline 437 Bovine Corneal Opacity and Permeability (BCOP) test method allows determining severely irritating substances without animals, and the recently adopted OECD Test Guideline 492 Reconstructed human cornea-like epithelium test method allows identifying chemicals that neither induce eye irritation nor serious eye damage. For substances applicable to these tests, huge progress has been made in replacing animal testing. METHODS The in vitro eye irritation potential of 20 nanosized and 3 non-nanosized materials was investigated in a 2-tier EpiOcular™ Eye Irritation Test (EpiOcular™-EIT) and BCOP testing strategy including histopathology of the bovine corneas. Furthermore, applicability of the testing strategy for nanomaterials was assessed. Test materials encompassed OECD representative nanomaterials (metals (Ag), metal oxides (ZnO, TiO2, CeO2), amorphous SiO2 and MWCNTs), three organic pigments, quartz, and talc. RESULTS None of the dry-powder nanomaterials elicited eye irritation in either the EpiOcular™-EIT or the BCOP assay. Likewise, an amorphous SiO2 nanomaterial that was supplied as suspension was tested negative in both assays. By contrast, in the EpiOcular™-EIT, the silver nanomaterial that was supplied as dispersion was tested positive, whereas its surfactant-containing dispersant was borderline to negative. In the BCOP assay, the silver nanomaterial elicited highly variable results and dark-brown patches remained on the corneal surface, whereas the results for its dispersant alone were borderline to positive, which was assessed as inconclusive due to high inter-assay variability. CONCLUSION The present study points to the low eye irritation potential of a spectrum of nanomaterials, which is consistent with available in vivo data for the same test materials or for nanosized or bulk materials of the same composition.
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Affiliation(s)
- Susanne N. Kolle
- BASF SE, Experimental Toxicology and Ecology, GB/TB - Z470, 67056 Ludwigshafen, Germany
| | - Ursula G. Sauer
- Scientific Consultancy – Animal Welfare, Hallstattfeld 16, 85579 Neubiberg, Germany
| | - Maria C. Rey Moreno
- BASF SE, Experimental Toxicology and Ecology, GB/TB - Z470, 67056 Ludwigshafen, Germany
| | - Wera Teubner
- BASF Schweiz AG, GUP/PS - K141, 4057 Basel, Switzerland
| | - Wendel Wohlleben
- BASF SE, Experimental Toxicology and Ecology, GB/TB - Z470, 67056 Ludwigshafen, Germany
- BASF SE, Material Physics and Analytics, GMC/R - B7, 67056 Ludwigshafen, Germany
| | - Robert Landsiedel
- BASF SE, Experimental Toxicology and Ecology, GB/TB - Z470, 67056 Ludwigshafen, Germany
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Bhowmick S, Koul V. Assessment of PVA/silver nanocomposite hydrogel patch as antimicrobial dressing scaffold: Synthesis, characterization and biological evaluation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 59:109-119. [DOI: 10.1016/j.msec.2015.10.003] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Revised: 09/14/2015] [Accepted: 10/01/2015] [Indexed: 12/25/2022]
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Metin-Gürsoy G, Taner L, Akca G. Nanosilver coated orthodontic brackets: in vivo antibacterial properties and ion release. Eur J Orthod 2016; 39:9-16. [PMID: 26787659 DOI: 10.1093/ejo/cjv097] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
INTRODUCTION Silver nanoparticles are currently utilized in the fields of dentistry. The aim of this study was to evaluate the antibacterial properties and ion release of nanosilver coated orthodontic brackets compared to conventional brackets. METHODS Nanosilver coating process was applied to standard orthodontic brackets placed on the mandibular incisors of Wistar Albino rats in the study group and conventional brackets in the control group. Dental plaque, mucosal vestibular smears, saliva, and blood samples were collected from rats at various days. The amounts of nanosilver ions in blood and saliva were measured and microbiological evaluation was made for Streptococcus mutans. For testing cariogenicity, all rats were sacrificed at the end of 75 days under anaesthesia. Teeth were stained using a caries indicator, then the caries ratio was assessed. RESULTS Nanosilver coated orthodontic bracket favoured the inhibition of S.mutans on Day 30 and reduction of caries on the smooth surfaces. The nanosilver amounts in the saliva and serum samples were significantly higher in the study group on Day 7. CONCLUSION It is suggested that nanosilver coated orthodontic brackets, as an antibacterial agent without patient compliance, could be helpful for the prevention of white spot lesions during fixed orthodontic treatment.
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Affiliation(s)
| | | | - Gülçin Akca
- Medical Microbiology, Faculty of Dentistry, Gazi University, Ankara, Turkey
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Toxicity of nanosilver in intragastric studies: Biodistribution and metabolic effects. Toxicol Lett 2015; 241:184-92. [PMID: 26617184 DOI: 10.1016/j.toxlet.2015.11.018] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Revised: 11/18/2015] [Accepted: 11/20/2015] [Indexed: 11/23/2022]
Abstract
The unique physicochemical properties of silver nanoparticles explain their extensive application in consumer goods, food, and medicinal products. However, the biological effects of nanosilver after peroral exposure of mammals are still debatable. This study describes the biodistribution and biological action of 12nm non-coated silver nanoparticles intragastrically administered to male rats after acute (single exposure) and sub-acute (multiple exposures over 30 days) toxicity experiments. The daily doses were 2000 and 250mg/kg of body weight for single and multiple administrations, respectively. Silver tissue detection was conducted by elemental analysis with the help of atomic absorption spectroscopy. An estimation of the state of exposed animals was made and the dynamics of hematological and biochemical parameters of rats was studied. It was demonstrated that single and multiple administrations resulted in silver accumulation in the liver, kidneys, spleen, stomach, and small intestine. After both one- and repeated-dose exposures, the highest Ag contents were detected in the liver (0.87±0.37μg/g of organ) and kidneys (0.24±0.02μg/g of organ). The concentrations of silver detected in tissues were far smaller than the administered doses (<99%), indicating its efficient excretion from the organism. Acute and sub-acute exposures caused no animal mortality or signs of toxicity, manifested as changes in outward appearance or notable deviations in behavior or locomotor activity. Postmortem study revealed no visible pathomorphological abnormalities of internal organs. Hematological indices and biochemical parameters of the treated rats did not differ from those of the vehicle control animals. Overall, it can be concluded that nanosilver is able to be absorbed from the gastrointestinal tract into the bloodstream and accumulate in the secondary organs of rats. It showed no distinct toxicity under the experimental conditions of this study.
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Wilding LA, Bassis CM, Walacavage K, Hashway S, Leroueil PR, Morishita M, Maynard AD, Philbert MA, Bergin IL. Repeated dose (28-day) administration of silver nanoparticles of varied size and coating does not significantly alter the indigenous murine gut microbiome. Nanotoxicology 2015; 10:513-20. [PMID: 26525505 DOI: 10.3109/17435390.2015.1078854] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Silver nanoparticles (AgNPs) have been used as antimicrobials in a number of applications, including topical wound dressings and coatings for consumer products and biomedical devices. Ingestion is a relevant route of exposure for AgNPs, whether occurring unintentionally via Ag dissolution from consumer products, or intentionally from dietary supplements. AgNP have also been proposed as substitutes for antibiotics in animal feeds. While oral antibiotics are known to have significant effects on gut bacteria, the antimicrobial effects of ingested AgNPs on the indigenous microbiome or on gut pathogens are unknown. In addition, AgNP size and coating have been postulated as significantly influential towards their biochemical properties and the influence of these properties on antimicrobial efficacy is unknown. We evaluated murine gut microbial communities using culture-independent sequencing of 16S rRNA gene fragments following 28 days of repeated oral dosing of well-characterized AgNPs of two different sizes (20 and 110 nm) and coatings (PVP and Citrate). Irrespective of size or coating, oral administration of AgNPs at 10 mg/kg body weight/day did not alter the membership, structure or diversity of the murine gut microbiome. Thus, in contrast to effects of broad-spectrum antibiotics, repeat dosing of AgNP, at doses equivalent to 2000 times the oral reference dose and 100-400 times the effective in vitro anti-microbial concentration, does not affect the indigenous murine gut microbiome.
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Affiliation(s)
- Laura A Wilding
- a Unit for Laboratory Animal Medicine, University of Michigan , Ann Arbor , MI , USA
| | - Christine M Bassis
- b Department of Internal Medicine , University of Michigan , Ann Arbor , MI , USA
| | - Kim Walacavage
- a Unit for Laboratory Animal Medicine, University of Michigan , Ann Arbor , MI , USA
| | - Sara Hashway
- a Unit for Laboratory Animal Medicine, University of Michigan , Ann Arbor , MI , USA
| | - Pascale R Leroueil
- c Michigan Nanotechnology Institute for Medical and Biological Sciences, University of Michigan , Ann Arbor , MI , USA
| | - Masako Morishita
- d Department of Environmental Health Sciences , University of Michigan , Ann Arbor , MI , USA
| | - Andrew D Maynard
- d Department of Environmental Health Sciences , University of Michigan , Ann Arbor , MI , USA .,e University of Michigan Risk Science Center, University of Michigan , Ann Arbor , MI , USA , and
| | - Martin A Philbert
- d Department of Environmental Health Sciences , University of Michigan , Ann Arbor , MI , USA .,f Toxicology Program, Department of Environmental Health Sciences, University of Michigan , Ann Arbor , MI , USA
| | - Ingrid L Bergin
- a Unit for Laboratory Animal Medicine, University of Michigan , Ann Arbor , MI , USA
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Antony JJ, Sivalingam P, Chen B. Toxicological effects of silver nanoparticles. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2015; 40:729-32. [PMID: 26425943 DOI: 10.1016/j.etap.2015.09.003] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 09/04/2015] [Accepted: 09/05/2015] [Indexed: 05/27/2023]
Abstract
Nanotechnology offers numerous biomedical applications and in so doing, exerts toxic effects. AgNPs, one of the metallic nanoparticles is known for its antibacterial applications and hence exposed to human through various healthcare products. Analysis of its toxic effects is necessary before its appliance into the biomedical field. Hence, this mini-review focuses on toxic effects of AgNPs related to human and his environment in vitro and in vivo.
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Affiliation(s)
- Jacob Joe Antony
- Department of Environmental Biotechnology, Bharathidasan University, Tiruchirappalli 24, Tamil Nadu, India
| | - Periyasamy Sivalingam
- Department of Biotechnology and Genetic Engineering, Bharathidasan University, Tiruchirappalli 24, Tamil Nadu, India
| | - Baoan Chen
- Department of Hematology and Oncology, Key Department of Jiangsu Medicine, Zhongda Hospital, Medical School, Southeast University, Nanjing, Jiangsu Province, People's Republic of China.
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Ouf SA, El-Adly AA, Mohamed AAH. Inhibitory effect of silver nanoparticles mediated by atmospheric pressure air cold plasma jet against dermatophyte fungi. J Med Microbiol 2015; 64:1151-1161. [DOI: 10.1099/jmm.0.000133] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Affiliation(s)
- Salama A. Ouf
- Biology Department, Faculty of Science, Taibah University, Almadinah Almunawwarah, KSA
- Botany and Microbiology Department, Faculty of Science, Cairo University, Giza 12613, Egypt
| | - Amira A. El-Adly
- Biology Department, Faculty of Science, Taibah University, Almadinah Almunawwarah, KSA
- National Institute of Laser Enhanced Science, Cairo University, Giza 12613, Egypt
| | - Abdel-Aleam H. Mohamed
- Physics Department, Faculty of Science, Taibah University, Almadinah Almunawwarah, KSA
- Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef 62511, Egypt
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Bergin IL, Wilding LA, Morishita M, Walacavage K, Ault AP, Axson JL, Stark DI, Hashway SA, Capracotta SS, Leroueil PR, Maynard AD, Philbert MA. Effects of particle size and coating on toxicologic parameters, fecal elimination kinetics and tissue distribution of acutely ingested silver nanoparticles in a mouse model. Nanotoxicology 2015; 10:352-60. [PMID: 26305411 DOI: 10.3109/17435390.2015.1072588] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Consumer exposure to silver nanoparticles (AgNP) via ingestion can occur due to incorporation of AgNP into products such as food containers and dietary supplements. AgNP variations in size and coating may affect toxicity, elimination kinetics or tissue distribution. Here, we directly compared acute administration of AgNP of two differing coatings and sizes to mice, using doses of 0.1, 1 and 10 mg/kg body weight/day administered by oral gavage for 3 days. The maximal dose is equivalent to 2000× the EPA oral reference dose. Silver acetate at the same doses was used as ionic silver control. We found no toxicity and no significant tissue accumulation. Additionally, no toxicity was seen when AgNP were dosed concurrently with a broad-spectrum antibiotic. Between 70.5% and 98.6% of the administered silver dose was recovered in feces and particle size and coating differences did not significantly influence fecal silver. Peak fecal silver was detected between 6- and 9-h post-administration and <0.5% of the administered dose was cumulatively detected in liver, spleen, intestines or urine at 48 h. Although particle size and coating did not affect tissue accumulation, silver was detected in liver, spleen and kidney of mice administered ionic silver at marginally higher levels than those administered AgNP, suggesting that silver ion may be more bioavailable. Our results suggest that, irrespective of particle size and coating, acute oral exposure to AgNP at doses relevant to potential human exposure is associated with predominantly fecal elimination and is not associated with accumulation in tissue or toxicity.
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Affiliation(s)
- Ingrid L Bergin
- a Unit for Laboratory Animal Medicine, University of Michigan , Ann Arbor , MI , USA
| | - Laura A Wilding
- a Unit for Laboratory Animal Medicine, University of Michigan , Ann Arbor , MI , USA
| | - Masako Morishita
- b Toxicology Program, Department of Environmental Health Sciences, University of Michigan , Ann Arbor , MI , USA
| | - Kim Walacavage
- a Unit for Laboratory Animal Medicine, University of Michigan , Ann Arbor , MI , USA
| | - Andrew P Ault
- b Toxicology Program, Department of Environmental Health Sciences, University of Michigan , Ann Arbor , MI , USA .,c Department of Chemistry , University of Michigan , Ann Arbor , MI , USA
| | - Jessica L Axson
- b Toxicology Program, Department of Environmental Health Sciences, University of Michigan , Ann Arbor , MI , USA
| | - Diana I Stark
- b Toxicology Program, Department of Environmental Health Sciences, University of Michigan , Ann Arbor , MI , USA
| | - Sara A Hashway
- a Unit for Laboratory Animal Medicine, University of Michigan , Ann Arbor , MI , USA
| | | | - Pascale R Leroueil
- e Michigan Nanotechnology Institute for Medical and Biological Sciences, University of Michigan , Ann Arbor , MI , USA , and
| | - Andrew D Maynard
- b Toxicology Program, Department of Environmental Health Sciences, University of Michigan , Ann Arbor , MI , USA
| | - Martin A Philbert
- b Toxicology Program, Department of Environmental Health Sciences, University of Michigan , Ann Arbor , MI , USA .,f University of Michigan Risk Science Center, University of Michigan , Ann Arbor , MI , USA
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Ninan N, Muthiah M, Park IK, Wong TW, Thomas S, Grohens Y. Natural Polymer/Inorganic Material Based Hybrid Scaffolds for Skin Wound Healing. POLYM REV 2015. [DOI: 10.1080/15583724.2015.1019135] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Immunomodulatory properties of silver nanoparticles contribute to anticancer strategy for murine fibrosarcoma. Cell Mol Immunol 2015; 13:191-205. [PMID: 25938978 DOI: 10.1038/cmi.2015.05] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Revised: 01/08/2015] [Accepted: 08/01/2015] [Indexed: 12/28/2022] Open
Abstract
The use of nanotechnology in nanoparticle-based cancer therapeutics is gaining impetus due to the unique biophysical properties of nanoparticles at the quantum level. Silver nanoparticles (AgNPs) have been reported as one type of potent therapeutic nanoparticles. The present study is aimed to determine the effect of AgNPs in arresting the growth of a murine fibrosarcoma by a reductive mechanism. Initially, a bioavailability study showed that mouse serum albumin (MSA)-coated AgNPs have enhanced uptake; therefore, toxicity studies of AgNP-MSA at 10 different doses (1-10 mg/kg b.w.) were performed in LACA mice by measuring the complete blood count, lipid profile and histological parameters. The complete blood count, lipid profile and histological parameter results showed that the doses from 2 to 8 mg (IC50: 6.15 mg/kg b.w.) sequentially increased the count of leukocytes, lymphocytes and granulocytes, whereas the 9- and 10-mg doses showed conclusive toxicity. In an antitumor study, the incidence and size of fibrosarcoma were reduced or delayed when murine fibrosarcoma groups were treated by AgNP-MSA. Transmission electron micrographs showed that considerable uptake of AgNP-MSA by the sentinel immune cells associated with tumor tissue and a morphologically buckled structure of the immune cells containing AgNP-MSA. Because the toxicity studies revealed a relationship between AgNPs and immune function, the protumorigenic cytokines TNF-α, IL-6 and IL-1β were also assayed in AgNP-MSA-treated and non-treated fibrosarcoma groups, and these cytokines were found to be downregulated after treatment with AgNP-MSA.
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Beddoes CM, Case CP, Briscoe WH. Understanding nanoparticle cellular entry: A physicochemical perspective. Adv Colloid Interface Sci 2015; 218:48-68. [PMID: 25708746 DOI: 10.1016/j.cis.2015.01.007] [Citation(s) in RCA: 236] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2014] [Revised: 01/21/2015] [Accepted: 01/22/2015] [Indexed: 12/21/2022]
Abstract
Understanding interactions between nanoparticles (NPs) with biological matter, particularly cells, is becoming increasingly important due to their growing application in medicine and materials, and consequent biological and environmental exposure. For NPs to be utilised to their full potential, it is important to correlate their functional characteristics with their physical properties, which may also be used to predict any adverse cellular responses. A key mechanism for NPs to impart toxicity is to gain cellular entry directly. Many parameters affect the behaviour of nanomaterials in a cellular environment particularly their interactions with cell membranes, including their size, shape and surface chemistry as well as factors such as the cell type, location and external environment (e.g. other surrounding materials, temperature, pH and pressure). Aside from in vitro and in vivo experiments, model cell membrane systems have been used in both computer simulations and physicochemical experiments to elucidate the mechanisms for NP cellular entry. Here we present a brief overview of the effects of NPs physical parameters on their cellular uptake, with focuses on 1) related research using model membrane systems and physicochemical methodologies; and 2) proposed physical mechanisms for NP cellular entrance, with implications to their nanotoxicity. We conclude with a suggestion that the energetic process of NP cellular entry can be evaluated by studying the effects of NPs on lipid mesophase transitions, as the molecular deformations and thus the elastic energy cost are analogous between such transitions and endocytosis. This presents an opportunity for contributions to understanding nanotoxicity from a physicochemical perspective.
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Affiliation(s)
- Charlotte M Beddoes
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK; Bristol Centre for Functional Nanomaterials, Centre for Nanoscience and Quantum Information, University of Bristol, UK
| | - C Patrick Case
- Musculoskeletal Research Unit, Clinical Science at North Bristol, University of Bristol, Avon Orthopaedic Centre, Southmead Hospital, Bristol BS10 5NB, UK
| | - Wuge H Briscoe
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK.
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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: 374] [Impact Index Per Article: 37.4] [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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Sulaiman F, Akanji M, Oloyede H, Sulaiman A, Olatunde A, Joel E, Adewale T, Adeboye H, Idris S, Quadri A, Oyegoke R, Adeyemi O. Oral Exposure to Silver/Gold Nanoparticles: Status of Rat Lipid Profile, Serum Metabolites and Tissue Morphology. JOURNAL OF MEDICAL SCIENCES 2015. [DOI: 10.3923/jms.2015.71.79] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Salem W, Leitner DR, Zingl FG, Schratter G, Prassl R, Goessler W, Reidl J, Schild S. Antibacterial activity of silver and zinc nanoparticles against Vibrio cholerae and enterotoxic Escherichia coli. Int J Med Microbiol 2015; 305:85-95. [PMID: 25466205 PMCID: PMC4300426 DOI: 10.1016/j.ijmm.2014.11.005] [Citation(s) in RCA: 186] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Revised: 10/30/2014] [Accepted: 11/04/2014] [Indexed: 11/17/2022] Open
Abstract
Vibrio cholerae and enterotoxic Escherichia coli (ETEC) remain two dominant bacterial causes of severe secretory diarrhea and still a significant cause of death, especially in developing countries. In order to investigate new effective and inexpensive therapeutic approaches, we analyzed nanoparticles synthesized by a green approach using corresponding salt (silver or zinc nitrate) with aqueous extract of Caltropis procera fruit or leaves. We characterized the quantity and quality of nanoparticles by UV-visible wavelength scans and nanoparticle tracking analysis. Nanoparticles could be synthesized in reproducible yields of approximately 10(8) particles/ml with mode particles sizes of approx. 90-100 nm. Antibacterial activity against two pathogens was assessed by minimal inhibitory concentration assays and survival curves. Both pathogens exhibited similar resistance profiles with minimal inhibitory concentrations ranging between 5×10(5) and 10(7) particles/ml. Interestingly, zinc nanoparticles showed a slightly higher efficacy, but sublethal concentrations caused adverse effects and resulted in increased biofilm formation of V. cholerae. Using the expression levels of the outer membrane porin OmpT as an indicator for cAMP levels, our results suggest that zinc nanoparticles inhibit adenylyl cyclase activity. This consequently deceases the levels of this second messenger, which is a known inhibitor of biofilm formation. Finally, we demonstrated that a single oral administration of silver nanoparticles to infant mice colonized with V. cholerae or ETEC significantly reduces the colonization rates of the pathogens by 75- or 100-fold, respectively.
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Affiliation(s)
- Wesam Salem
- University of Graz, Institute of Molecular Biosciences, BioTechMed-Graz, Humboldtstrasse 50, A-8010 Graz, Austria; South Valley University, Faculty of Science, Qena, Egypt
| | - Deborah R Leitner
- University of Graz, Institute of Molecular Biosciences, BioTechMed-Graz, Humboldtstrasse 50, A-8010 Graz, Austria
| | - Franz G Zingl
- University of Graz, Institute of Molecular Biosciences, BioTechMed-Graz, Humboldtstrasse 50, A-8010 Graz, Austria
| | - Gebhart Schratter
- Institute of Biophysics, Medical University of Graz, BioTechMed-Graz, Schmiedlstraße 6, 8042 Graz, Austria
| | - Ruth Prassl
- Institute of Biophysics, Medical University of Graz, BioTechMed-Graz, Schmiedlstraße 6, 8042 Graz, Austria
| | - Walter Goessler
- Institute for Chemistry, Analytical Chemistry, University of Graz, BioTechMed-Graz, 8010 Graz, Austria
| | - Joachim Reidl
- University of Graz, Institute of Molecular Biosciences, BioTechMed-Graz, Humboldtstrasse 50, A-8010 Graz, Austria
| | - Stefan Schild
- University of Graz, Institute of Molecular Biosciences, BioTechMed-Graz, Humboldtstrasse 50, A-8010 Graz, Austria.
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Adeyemi OS, Adewumi I. Biochemical Evaluation of Silver Nanoparticles in Wistar Rats. INTERNATIONAL SCHOLARLY RESEARCH NOTICES 2014; 2014:196091. [PMID: 27350993 PMCID: PMC4897432 DOI: 10.1155/2014/196091] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2014] [Revised: 07/17/2014] [Accepted: 07/25/2014] [Indexed: 11/21/2022]
Abstract
Background. Silver nanoparticles have found wider and increasing biomedical applications due to their broad antimicrobial characteristics. However, toxicity of nanoparticles is a subject of continued controversy, thus necessitating further studies in this direction. Objectives. This study investigated the biochemical effects of silver nanoparticles in Wistar rats. Materials and Methods. Forty male rats were randomly distributed into eight experimental groups of five. Group A served as the control and received distilled water. Groups B to H were orally exposed to varying concentrations of silver nanoparticles (AgNPs) at 100, 1000, and 5000 mg/kg daily for 7, 14, and 21 days alternately. Following cessation of treatments, rats were sacrificed and the blood and other vital organs were collected and prepared as specimens for biochemical analysis. Results. Administration of AgNPs to rats did not produce significant loss in feed intake and body weight. However, rat exposure to AgNPs caused significant alterations to levels of serum and tissue AST, ALT, and ALP. At the 100 mg/kg AgNPs exposure, rat serum and tissue AST and ALT levels were significantly decreased (P < 0.05). In contrast, AgNPs administration elevated (P < 0.05) ALP levels in rat serum and tissues. Conclusion. We show evidence that AgNPs administration to Wistar rats altered some biochemical parameters.
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Affiliation(s)
- Oluyomi Stephen Adeyemi
- Department of Biological Sciences, Landmark University, Omu-Aran, Kwara State 370102, Nigeria
| | - Ifeoluwa Adewumi
- Department of Chemical Sciences, Redeemer's University, Redemption Camp, Mowe 121001, Nigeria
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Adeyemi OS, Faniyan TO. Antioxidant status of rats administered silver nanoparticles orally. J Taibah Univ Med Sci 2014. [DOI: 10.1016/j.jtumed.2014.03.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Kovvuru P, Mancilla PE, Shirode AB, Murray TM, Begley TJ, Reliene R. Oral ingestion of silver nanoparticles induces genomic instability and DNA damage in multiple tissues. Nanotoxicology 2014; 9:162-71. [DOI: 10.3109/17435390.2014.902520] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Almajhdi FN, Fouad H, Khalil KA, Awad HM, Mohamed SHS, Elsarnagawy T, Albarrag AM, Al-Jassir FF, Abdo HS. In-vitro anticancer and antimicrobial activities of PLGA/silver nanofiber composites prepared by electrospinning. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2014; 25:1045-1053. [PMID: 24375170 DOI: 10.1007/s10856-013-5131-y] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2013] [Accepted: 12/23/2013] [Indexed: 06/03/2023]
Abstract
In the present work, a series of 0, 1 and 7 wt% silver nano-particles (Ag NPs) incorporated poly lactic-co-glycolic acid (PLGA) nano-fibers were synthesized by the electrospinning process. The PLGA/Ag nano-fibers sheets were characterized using SEM, TEM and DSC analyses. The three synthesized PLGA/silver nano-fiber composites were screened for anticancer activity against liver cancer cell line using MTT and LDH assays. The anticancer activity of PLGA nano-fibers showed a remarkable improvement due to increasing the concentration of the Ag NPs. In addition to the given result, PLGA nano-fibers did not show any cytotoxic effect. However, PLGA nano-fibers that contain 1 % nano silver showed anticancer activity of 8.8 %, through increasing the concentration of the nano silver to 7 % onto PLGA nano-fibers, the anticancer activity was enhanced to a 67.6 %. Furthermore, the antibacterial activities of these three nano-fibers, against the five bacteria strains namely; E.coli o157:H7 ATCC 51659, Staphylococcus aureus ATCC 13565, Bacillus cereus EMCC 1080, Listeria monocytogenes EMCC 1875 and Salmonella typhimurium ATCC25566 using the disc diffusion method, were evaluated. Sample with an enhanced inhibitory effect was PLGA/Ag NPs (7 %) which inhibited all strains (inhibition zone diameter 10 mm); PLGA/Ag NPs (1 %) sample inhibited only one strain (B. cereus) with zone diameter 8 mm. The PLGA nano-fiber sample has not shown any antimicrobial activity. Based on the anticancer as well as the antimicrobial results in this study, it can be postulated that: PLGA nanofibers containing 7 % nano silver are suitable as anticancer- and antibiotic-drug delivery systems, as they will increase the anticancer as well as the antibiotic drug potency without cytotoxicity effect on the normal cells. These findings also suggest that Ag NPs, of the size (5-10 nm) evaluated in the present study, are appropriate for therapeutic application from a safety standpoint.
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Affiliation(s)
- Fahad N Almajhdi
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia
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Sarhan OMM, Hussein RM. Effects of intraperitoneally injected silver nanoparticles on histological structures and blood parameters in the albino rat. Int J Nanomedicine 2014; 9:1505-17. [PMID: 24711700 PMCID: PMC3969345 DOI: 10.2147/ijn.s56729] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND The purpose of this study was to investigate the effect of acute dosing with silver nanoparticles (AgNPs) and identify potential ultrastructural alterations in the liver and kidney and their effect on blood parameters in the albino rat. METHODS Twenty rats were used to assess the acute effects of AgNPs. Rats in the treatment group were injected intraperitoneally with 0.5 mL of distilled water containing AgNPs at a dose of 2,000 mg/kg body weight followed by a second injection after 48 hours. Control rats received two 0.5 mL doses of distilled water only. After 3 days, blood samples were collected, and the rat kidneys and livers were extracted and processed for electron microscopy to investigate for hematologic and histopathologic alterations. RESULTS Renal tubules showed swollen epithelium with cytoplasmic vacuolization, thickening of the basement membrane, and destruction of some mitochondrial cristae. Podocytes showed elongation and swelling of their primary and secondary processes. The basement membrane of the capillary tufts became thicker. The hepatic tissue showed narrowing of the sinusoids, swollen hepatocytes with hypertrophied nucleoli, and accumulation of fat globules in the nucleoplasm and cytoplasm. The hepatic sinusoids showed hypertrophied endothelial and Kupffer. Destructed cristae of some mitochondria, endosomes, and larger lysosomes filled with Ag-NPs were also observed in the Kupffer cells. Significant increases were observed in white blood cell count, lymphocyte count, granulocytes, and hemoglobin. There was a significant increase in serum creatinine, urea, and aspartate and alanine aminotransferases. CONCLUSION To the best of the authors' knowledge, the ultrastructural changes in renal and liver tissue observed in this study have not been described before. Our results suggest that injection of AgNPs could have severe cytotoxic effects on the structure and function of these organs.
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Affiliation(s)
- Osama Mohamed M Sarhan
- Department of Zoology, Faculty of Sciences, Fayoum University, Al Fayoum, Egypt ; Department of Biology, Faculty of Applied Science, Umm Al-Qura University, Makkah Al-Mukarramah, Saudi Arabia
| | - Rehab M Hussein
- Department of Zoology, Faculty of Science, Cairo University, Giza, Egypt
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Borase HP, Salunke BK, Salunkhe RB, Patil CD, Hallsworth JE, Kim BS, Patil SV. Plant extract: a promising biomatrix for ecofriendly, controlled synthesis of silver nanoparticles. Appl Biochem Biotechnol 2014; 173:1-29. [PMID: 24622849 DOI: 10.1007/s12010-014-0831-4] [Citation(s) in RCA: 114] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Accepted: 02/20/2014] [Indexed: 12/21/2022]
Abstract
Uses of plants extracts are found to be more advantageous over chemical, physical and microbial (bacterial, fungal, algal) methods for silver nanoparticles (AgNPs) synthesis. In phytonanosynthesis, biochemical diversity of plant extract, non-pathogenicity, low cost and flexibility in reaction parameters are accounted for high rate of AgNPs production with different shape, size and applications. At the same time, care has to be taken to select suitable phytofactory for AgNPs synthesis based on certain parameters such as easy availability, large-scale nanosynthesis potential and non-toxic nature of plant extract. This review focuses on synthesis of AgNPs with particular emphasis on biological synthesis using plant extracts. Some points have been given on selection of plant extract for AgNPs synthesis and case studies on AgNPs synthesis using different plant extracts. Reaction parameters contributing to higher yield of nanoparticles are presented here. Synthesis mechanisms and overview of present and future applications of plant-extract-synthesized AgNPs are also discussed here. Limitations associated with use of AgNPs are summarised in the present review.
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Affiliation(s)
- Hemant P Borase
- School of Life Sciences, North Maharashtra University, Post Box 80, Jalgaon, 425001, Maharashtra, India
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Nanoparticles in Polymer Nanocomposite Food Contact Materials: Uses, Potential Release, and Emerging Toxicological Concerns. MOLECULAR AND INTEGRATIVE TOXICOLOGY 2014. [DOI: 10.1007/978-1-4471-6500-2_4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Wang H, Du LJ, Song ZM, Chen XX. Progress in the characterization and safety evaluation of engineered inorganic nanomaterials in food. Nanomedicine (Lond) 2013; 8:2007-25. [DOI: 10.2217/nnm.13.176] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Nanotechnology has stepped into the food industry, from the farm to the table at home, in order to improve the taste and nutritional value, extend the shelf-life and monitor the food quality. In fact, as consumers we have already been in contact, via oral exposure, with a number of food products containing engineered nanomaterials (ENMs) more often than most people think. However, the fate of ENMs after entering the GI tract of the human body is not yet clearly understood. Hence, the related safety issue is raised, and attracts much attention and wide debate from the public, even including protest demonstrations against nanotechnology in food. In this review, we summarize the up-to-date information about the characterization and safety evaluation of common inorganic ENMs (with a focus on silver, titanium dioxide, silica and zinc oxide nanoparticles) in food. Based on the literature, a whole scenario of the safety issue of these ENMs in food and an outlook on the future studies are given.
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Affiliation(s)
- Haifang Wang
- Institute of Nanochemistry & Nanobiology, Shanghai University, Shanghai 200444, China
| | - Li-Jing Du
- Institute of Nanochemistry & Nanobiology, Shanghai University, Shanghai 200444, China
| | - Zheng-Mei Song
- Institute of Nanochemistry & Nanobiology, Shanghai University, Shanghai 200444, China
| | - Xin-Xin Chen
- Institute of Nanochemistry & Nanobiology, Shanghai University, Shanghai 200444, China
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Hadrup N, Lam HR. Oral toxicity of silver ions, silver nanoparticles and colloidal silver--a review. Regul Toxicol Pharmacol 2013; 68:1-7. [PMID: 24231525 DOI: 10.1016/j.yrtph.2013.11.002] [Citation(s) in RCA: 316] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Revised: 10/30/2013] [Accepted: 11/01/2013] [Indexed: 01/22/2023]
Abstract
Orally administered silver has been described to be absorbed in a range of 0.4-18% in mammals with a human value of 18%. Based on findings in animals, silver seems to be distributed to all of the organs investigated, with the highest levels being observed in the intestine and stomach. In the skin, silver induces a blue-grey discoloration termed argyria. Excretion occurs via the bile and urine. The following dose-dependent animal toxicity findings have been reported: death, weight loss, hypoactivity, altered neurotransmitter levels, altered liver enzymes, altered blood values, enlarged hearts and immunological effects. Substantial evidence exists suggesting that the effects induced by particulate silver are mediated via silver ions that are released from the particle surface. With the current data regarding toxicity and average human dietary exposure, a Margin of Safety calculation indicates at least a factor of five before a level of concern to the general population is reached.
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Affiliation(s)
- Niels Hadrup
- Division of Toxicology and Risk Assessment, National Food Institute, Technical University of Denmark, Mørkhøj Bygade 19, DK 2860 Søborg, Denmark.
| | - Henrik R Lam
- Environment and Toxicology, DHI, Agern Allé 5, DK 2970 Hørsholm, Denmark.
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Fazly Bazzaz BS, Khameneh B, Jalili-Behabadi MM, Malaekeh-Nikouei B, Mohajeri SA. Preparation, characterization and antimicrobial study of a hydrogel (soft contact lens) material impregnated with silver nanoparticles. Cont Lens Anterior Eye 2013; 37:149-52. [PMID: 24121010 DOI: 10.1016/j.clae.2013.09.008] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Revised: 09/16/2013] [Accepted: 09/17/2013] [Indexed: 11/18/2022]
Abstract
PURPOSE Contact lenses that incorporate antimicrobial properties may reduce the risk for microbial-associated adverse events for lens wearers. The aim of this study was to assess the antimicrobial effects of silver nanoparticles (NP) when impregnated in a hydrogel material. METHODS Hydrogel disks, used as a proxy for soft contact lenses, were prepared with silver NPs to add an antimicrobial effect to the polymer. Six groups of disks were created, each with a different concentration of silver NPs. The antimicrobial effect of the hydrogels against Pseudomonas aeruginosa (ATCC15442) and Staphylococcus aureus (ATCC6538) was evaluated at 6, 24, 48 and 72 h. RESULTS Silver NP concentrations ranged from 20.71 to 98.06 μg/disk. All groups demonstrated excellent antibacterial effects against P. aeruginosa at each time point. After 6h all disks didn't exhibit desirable antibacterial activity against S. aureus; whereas except those with 20.71 μg silver NPs showed antibacterial activity at 24h and only the disks with 57.13 and 98.06 μg silver NPs showed antimicrobial activity at 48 and 72 h. CONCLUSIONS The development of contact lenses made of a silver NP-impregnated hydrogel material may bring antimicrobial effects sufficient to decrease the risk of microbial-related adverse events for lens wearers.
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Affiliation(s)
- Bibi Sedigheh Fazly Bazzaz
- Biotechnology Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Bahman Khameneh
- Students Research Committee, Department of Food and Drug Control, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | - Bizhan Malaekeh-Nikouei
- Nanotechnology Research Centre, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Seyed Ahmad Mohajeri
- Targeted Drug Delivery Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
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PANTIC I, PAUNOVIC J, PEROVIC M, CATTANI C, PANTIC S, SUZIC S, NESIC D, BASTA-JOVANOVIC G. Time-dependent reduction of structural complexity of the buccal epithelial cell nuclei after treatment with silver nanoparticles. J Microsc 2013; 252:286-94. [DOI: 10.1111/jmi.12091] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2013] [Accepted: 09/06/2013] [Indexed: 12/16/2022]
Affiliation(s)
- I. PANTIC
- Laboratory for Cellular Physiology, Institute of Medical Physiology, School of Medicine; University of Belgrade; Belgrade Serbia
| | - J. PAUNOVIC
- Institute of Histology and Embryology, School of Medicine; University of Belgrade; Belgrade Serbia
| | - M. PEROVIC
- University Clinic “Narodni Front”, School of Medicine; University of Belgrade; Belgrade Serbia
| | - C. CATTANI
- Department of Mathematics; University of Salerno; Fisciano Italy
| | - S. PANTIC
- Institute of Histology and Embryology, School of Medicine; University of Belgrade; Belgrade Serbia
| | - S. SUZIC
- Institute of Medical Physiology, School of Medicine; University of Belgrade; Belgrade Serbia
| | - D. NESIC
- Institute of Medical Physiology, School of Medicine; University of Belgrade; Belgrade Serbia
| | - G. BASTA-JOVANOVIC
- Institute of Pathology, School of Medicine; University of Belgrade; Belgrade Serbia
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Meng J, Ji Y, Liu J, Cheng X, Guo H, Zhang W, Wu X, Xu H. Using gold nanorods core/silver shell nanostructures as model material to probe biodistribution and toxic effects of silver nanoparticles in mice. Nanotoxicology 2013; 8:686-96. [DOI: 10.3109/17435390.2013.822593] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Butler MR, Prospero Ponce CM, Weinstock YE, Orengo-Nania S, Chevez-Barrios P, Frankfort BJ. Topical silver nanoparticles result in improved bleb function by increasing filtration and reducing fibrosis in a rabbit model of filtration surgery. Invest Ophthalmol Vis Sci 2013; 54:4982-90. [PMID: 23766475 PMCID: PMC3723376 DOI: 10.1167/iovs.13-12047] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2013] [Accepted: 06/06/2013] [Indexed: 02/02/2023] Open
Abstract
PURPOSE To compare the effects of silver nanoparticles (AgNPs) and mitomycin C (MMC) on intraocular pressure (IOP) and external, histologic, and immunohistochemical bleb characteristics in a rabbit model of filtration surgery. METHODS Filtration surgery with concurrent topical application of either AgNPs or MMC was performed on 14 pigmented Dutch Belted rabbits. IOP and bleb characteristics were compared on postoperative day 1 and at weeks 1 through 6. Hematoxylin and eosin staining and smooth muscle actin (SMA) immunohistochemistry were performed at postoperative week 6. RESULTS Average IOP across all time points was reduced 5.8 and 3.8 mm Hg in AgNP- and MMC-treated eyes, respectively. At week 6, IOP was reduced 4.1 and 0.2 mm Hg in AgNP- and MMC-treated eyes, respectively. Blebs were smaller, thicker, and less ischemic in AgNP-treated eyes. AgNP-treated eyes showed less fibrosis and more stromal edema, suggesting increased filtration, and also had fewer SMA-positive myofibroblasts, suggesting reduced bleb contraction. AgNP-treated eyes showed more lymphocytes than MMC-treated eyes. There were few complications in both groups. CONCLUSIONS In a rabbit model of filtration surgery, AgNPs are a reasonable alternative to MMC as adjunctive therapy. Compared to MMC, AgNPs result in an improved and sustained reduction of IOP and promote blebs with decreased fibrosis and ischemia as well as increased filtration despite a smaller overall size. This combination may offer an opportunity to promote long-term surgical IOP reduction with an improved complication profile.
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Affiliation(s)
- Michelle R. Butler
- Cullen Eye Institute, Department of Ophthalmology, Baylor College of Medicine, Houston, Texas
| | | | - Y. Etan Weinstock
- Department of Otorhinolaryngology, The University of Texas Health Science Center at Houston, Houston, Texas
| | - Silvia Orengo-Nania
- Cullen Eye Institute, Department of Ophthalmology, Baylor College of Medicine, Houston, Texas
| | - Patricia Chevez-Barrios
- Cullen Eye Institute, Department of Ophthalmology, Baylor College of Medicine, Houston, Texas
- Department of Pathology and Genomic Medicine, The Methodist Hospital, Houston, Texas
| | - Benjamin J. Frankfort
- Cullen Eye Institute, Department of Ophthalmology, Baylor College of Medicine, Houston, Texas
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Liu Y, Zheng Z, Zara JN, Hsu C, Soofer DE, Lee KS, Siu RK, Miller LS, Zhang X, Carpenter D, Wang C, Ting K, Soo C. The antimicrobial and osteoinductive properties of silver nanoparticle/poly (DL-lactic-co-glycolic acid)-coated stainless steel. Biomaterials 2012; 33:8745-56. [PMID: 22959466 DOI: 10.1016/j.biomaterials.2012.08.010] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2012] [Accepted: 08/05/2012] [Indexed: 02/07/2023]
Abstract
Implant-associated bacterial infections are one of the most serious complications in orthopedic surgery. Treatment of these infections often requires multiple operations, device removal, long-term systemic antibiotics, and extended rehabilitation, and is frequently ineffective, leading to worse clinical outcomes and increased financial costs. In this study, we evaluated silver nanoparticle/poly(DL-lactic-co-glycolic acid) (PLGA)-coated stainless steel alloy(SNPSA) as a potential antimicrobial implant material. We found that SNPSA exhibited strong antibacterial activity in vitro and ex vivo, and promoted MC3T3-E1 pre-osteoblasts proliferation and maturation in vitro. Furthermore, SNPSA implants induced osteogenesis while suppressing bacterial survival in contaminated rat femoral canals. Our results indicate that SNPSA has simultaneous antimicrobial and osteoinductive properties that make it a promising therapeutic material in orthopedic surgery.
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Affiliation(s)
- Yi Liu
- Shandong Provincial Laboratory of Oral Biomedicine, School and Hospital of Stomatology, Shandong University, Jinan, Shandong 250012, PR China
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Lee CM, Jeong HJ, Yun KN, Kim DW, Sohn MH, Lee JK, Jeong J, Lim ST. Optical imaging to trace near infrared fluorescent zinc oxide nanoparticles following oral exposure. Int J Nanomedicine 2012; 7:3203-9. [PMID: 22811605 PMCID: PMC3394462 DOI: 10.2147/ijn.s32828] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Background Understanding how nanomaterials are distributed in the body after exposure is important for assessing whether they are safe. In this study, we investigated the behavior and accumulation of nanoscaled and submicron-scaled zinc oxide (ZnO) particles in the body using optical imaging following oral exposure. Methods To trace these nanoparticles in the body, ZnO nanoparticles were conjugated with a monoreactive hydroxysuccinimide ester of Cy5.5 (Cy5.5-NHS), and the conjugation-stabilizing effect of Cy5.5 on the nanoparticles was evaluated in simulated gastric fluid (pH 1.2) for 7 hours. To compare the distribution of Cy5.5-NHS and Cy5.5-conjugated ZnO nanoparticles, Cy5.5-NHS 0.5 mg/kg and Cy5.5-conjugated ZnO nanoparticles 250 mg/kg were administered orally to healthy rats. We collected blood from the rats at predesignated time points for 7 hours after administration, and optical imaging studies were performed at 1, 2, 3, 5, and 7 hours after dosing. To investigate the extent of nanoparticle accumulation in the organs and tissues, the mice were sacrificed at 23 hours after administration, and the organs were removed and imaged. Results Cy5.5-conjugated ZnO nanoparticles were stable in simulated gastric fluid for 7 hours. The signal intensity of Cy5.5-NHS in blood was highest 3 hours after oral administration, and Cy5.5-conjugated ZnO nanoparticles showed the highest signal intensity in blood 5–7 hours after administration. In vivo optical images indicated that Cy5.5-NHS showed optical signals in the lung, liver, and gastrointestinal tract after oral administration, whereas Cy5.5-conjugated ZnO nanoparticles were seen only in the gastrointestinal tract. Seven hours following administration, biodistribution studies demonstrated that Cy5.5-NHS accumulated in the lung and liver, and Cy5.5-conjugated ZnO nanoparticles resulted in a strong signal in the kidney and liver. Different-sized ZnO nanoparticles showed dissimilar patterns of biodistribution in ex vivo optical images. Conclusion ZnO nanoparticles are absorbed into the tissues following oral exposure and their behavior can be monitored and evaluated using optical imaging.
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Affiliation(s)
- Chang-Moon Lee
- Department of Nuclear Medicine, Chonbuk National University Medical School and Hospital, Jeonju, Jeollabuk-Do, Republic of Korea
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Kim JS, Song KS, Sung JH, Ryu HR, Choi BG, Cho HS, Lee JK, Yu IJ. Genotoxicity, acute oral and dermal toxicity, eye and dermal irritation and corrosion and skin sensitisation evaluation of silver nanoparticles. Nanotoxicology 2012; 7:953-60. [DOI: 10.3109/17435390.2012.676099] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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