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Lima-Faria JMD, Silva VCD, Chen LC, Martinez DST, Sabóia-Morais SMTD. Co-exposure of iron oxide nanoparticles with glyphosate herbicides in Poecilia reticulata: Fish liver damages is reversible during iron accumulation and elimination period. Chemosphere 2023; 328:138590. [PMID: 37028726 DOI: 10.1016/j.chemosphere.2023.138590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 03/31/2023] [Accepted: 04/01/2023] [Indexed: 06/19/2023]
Abstract
Iron oxide nanoparticles (IONPs) are advanced materials for water remediation technologies. It is therefore relevant to evaluate the cellular and tissue behavior of fishes in response to IONPs and their associations with agrochemicals such as glyphosate (GLY) and glyphosate-based herbicides (GBHs). Iron accumulation, tissue integrity and lipid distribution in the hepatocytes of Poecilia reticulata (guppy) were investigated in a control group and in groups exposed to soluble iron ions, namely IFe (0.3 mgFe/L), IONPs (0.3 mgFe/L), and IONPs, associated with GLY (0.65 mg/L), GBHs 0.65 mgGLY/L (IONPs + GBH1), and 1.30 mgGLY/L (IONPs + GBH2), for 7, 14, and 21 days, followed by an equal period of postexposure in clean reconstituted water. The results showed that the accumulation of iron was greater in the subjects in the IONP treatment group when compared to that in the Ife group. In addition, the subjects in the mixtures with GBHs had a greater accumulation of iron than those in the IONP + GLY treatment group. Tissue integrity assessments demonstrated an intense accumulation of lipids, formation of necrotic zones and leukocyte infiltrates in all the treated groups, with a greater quantity of lipids in the animals treated with IONP + GLY and IFe. During postexposure, the results indicated an elimination of iron in all treated groups, reaching the same level as the control group, throughout the 21 days postexposure. Thus, the damage caused to animal livers by IONP mixtures is reversible, providing promising results for the development of safe environmental remediation practices using nanoparticles.
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Affiliation(s)
- João Marcos de Lima-Faria
- Laboratory of Cellular Behavior, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Goiás, Brazil.
| | - Victória Costa da Silva
- Laboratory of Cellular Behavior, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Goiás, Brazil
| | - Lee Chen Chen
- Radiobiology of Microorganisms and Mutagenesis Laboratory, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Goiás, Brazil
| | - Diego Stéfani Teodoro Martinez
- Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, São Paulo, Brazil
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Côa F, Delite FDS, Strauss M, Martinez DST. Toxicity mitigation and biodistribution of albumin corona coated graphene oxide and carbon nanotubes in Caenorhabditis elegans. NanoImpact 2022; 27:100413. [PMID: 35940564 DOI: 10.1016/j.impact.2022.100413] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 06/26/2022] [Accepted: 07/30/2022] [Indexed: 06/15/2023]
Abstract
In this work, the toxicity and biodistribution of graphene oxide (GO) and oxidized multi-walled carbon nanotubes (MWCNT) were investigated in Caenorhabditis elegans. Bovine serum albumin (BSA) was selected as a model protein to evaluate the influence of protein corona formation on materials physicochemical properties, colloidal stability, and toxicity. Biological assays were performed to assess the effects of bare and albumin corona coated materials on survival, oxidative stress, intestinal barrier permeability, growth, reproduction, and fertility. Critical alterations in topography, surface roughness and chemistry of GO and MWCNT were observed due to albumin corona formation. These modifications were associated with changes in colloidal stability of materials and prevention of their aggregation and sedimentation in nematode testing medium. Both GO and MWCNT caused damage to nematode survival, growth, reproduction, and fertility, as well as enhanced oxidative stress and permeability of the intestinal barrier. But GO was more toxic than MWCNT to C. elegans, especially at long-term assays. Albumin corona mitigated 100% of acute and chronic effects of MWCNT. In contrast, the negative effects of GO were not completely mitigated; GO inhibited 16.2% of nematode growth, 86.5% of reproduction, and 32.0% of fertility at the highest concentration evaluated (10 mg L-1), while corona coated GO mitigated 50% and 100% of fertility and growth, respectively. Confocal Raman spectroscopy imaging was crucial to point out that bare and albumin corona coated GO and MWCNT crossed the C. elegans intestinal barrier reaching its reproductive organs. However, BSA corona protected the nematodes targeted organs from negative effects from MWCNT and blocked its translocation to other tissues, while coated GO was translocated inside the nematode affecting the functionality of crucial organs. In addition, coated MWCNT was excreted after 2 h of food resumption, whereas coated GO still accumulated in the nematode intestine. Our results demonstrate that the materials different translocation and excretion patterns in C. elegans had a relation to the impaired physiological functions of primary and secondary organs. This work is a contribution towards a better understanding of the impacts of protein corona on the toxicity of graphene oxide and carbon nanotubes; essential information for biological applications and nanosafety.
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Affiliation(s)
- Francine Côa
- Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, São Paulo, Brazil; Center for Nuclear Energy in Agriculture (CENA), University of São Paulo (USP), Piracicaba, São Paulo, Brazil
| | - Fabrício de Souza Delite
- Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, São Paulo, Brazil
| | - Mathias Strauss
- Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, São Paulo, Brazil; Center of Natural and Human Sciences, Federal University of ABC, Santo André, São Paulo, Brazil
| | - Diego Stéfani Teodoro Martinez
- Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, São Paulo, Brazil; Center for Nuclear Energy in Agriculture (CENA), University of São Paulo (USP), Piracicaba, São Paulo, Brazil; School of Technology, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil.
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Costa LSD, Khan LU, Franqui LS, Delite FDS, Muraca D, Martinez DST, Knobel M. Hybrid magneto-luminescent iron oxide nanocubes functionalized with europium complexes: synthesis, hemolytic properties and protein corona formation. J Mater Chem B 2021; 9:428-439. [PMID: 33367419 DOI: 10.1039/d0tb02454f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The use of hybrid nanostructures based on magneto-luminescent properties is a promising strategy for nano-bio applications and theranostics platforms. In this work, we carried out the synthesis and functionalization of iron oxide nanocubes (IONCs) to obtain multifunctional hybrid nanostructures towards biomedical applications. The IONCs were functionalized with tetraethylorthosilicate, thenoyltrifluoroacetone-propyl-triethoxysilane and europium(iii)-dibenzoylmethane complexes to obtain the materials termed as IOCNCs@SiO2, IONCs@SiO2TTA, IONCs@SiO2TTA-Eu and IONCs@SiO2-TTA-Eu-DBM, respectively. Then, the biological interactions of these nanostructures with red blood cells - RBCs (hemolysis) and human blood plasma (protein corona formation) were evaluated. The XPS spectrocopy and EDS chemical mapping analysis showed that each domain is homogeneously occupied in the hybrid material, with the magnetic core at the center and the luminescent domain on the surface of the hybrid nanomaterial with a core@shell like structure. Futhermore, after each functionalization step, the nanomaterial surface charge drastically changed, with critical impact on RBC lysis and corona formation. While IONCs@SiO2 and IONCs@SiO2-TTA-Eu-DBM showed hemolytic properties in a dose-dependent manner, the IONCs@SiO2TTA-Eu did not present any hemolytic effect up to 300 μg mL-1. Protein corona results showed a pattern of selective adsorption of proteins with each surface of the synthesized hybrid materials. However, as a general result, a suppression of hemolysis after protein corona formation in all tests was verified. Finally, this study provides a solid background for further applications of these hybrid magneto-luminescent materials containing new surface functionalities in the emerging field of medical nanobiotechnology.
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Affiliation(s)
- Luelc Souza da Costa
- Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Sao Paulo, Brazil. and "Gleb Wataghim" Institute of Physics (IFGW), University of Campinas (Unicamp), Campinas, Sao Paulo, Brazil.
| | - Latif Ullah Khan
- Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Sao Paulo, Brazil. and Synchrotron-Light for Experimental Science and Applications in the Middle East (SESAME), Allan, Jordan
| | - Lidiane Silva Franqui
- Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Sao Paulo, Brazil.
| | - Fabrício de Souza Delite
- Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Sao Paulo, Brazil.
| | - Diego Muraca
- "Gleb Wataghim" Institute of Physics (IFGW), University of Campinas (Unicamp), Campinas, Sao Paulo, Brazil.
| | - Diego Stéfani Teodoro Martinez
- Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Sao Paulo, Brazil.
| | - Marcelo Knobel
- "Gleb Wataghim" Institute of Physics (IFGW), University of Campinas (Unicamp), Campinas, Sao Paulo, Brazil.
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Medeiros AMZD, Côa F, Alves OL, Teodoro Martinez DS, Barbieri E. Metabolic effects in the freshwater fish Geophagus iporangensis in response to single and combined exposure to graphene oxide and trace elements. Chemosphere 2020; 243:125316. [PMID: 31733537 DOI: 10.1016/j.chemosphere.2019.125316] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 10/17/2019] [Accepted: 11/04/2019] [Indexed: 05/22/2023]
Abstract
Graphene oxide (GO) is part of a new set of nanomaterials with particular characteristics related to its nanoscale size. Due to this feature, it presents high reactivity and other contaminants present in the environment could bind to them and affect its intrinsic toxicity. The metabolic effects of such nanomaterials and their combination with two common pollutants, zinc and cadmium, on the freshwater fish Geophagus iporangensis are analyzed. Moreover, metabolic rate and ammonia excretion were used as bioindicators to measure metabolic changes. Fishes were exposed for 24 h in filtered tap water to different concentrations of GO (0.5; 1.0; 2.0 and 4.0 mg L-1), Zn (0.5; 1.0; 2.0; 4.0 and 10.0 mg L-1) and Cd (0.1; 0.5; 1.0; 2.0 and 4.0 mg L-1). Combined effects were verified using the same concentrations of trace elements added to 1.0 mg L-1 of GO. Exposure to GO and Cd resulted in a decrease of metabolic rate in G. iporangensis, by about 30% compared to control means, in the highest concentration tested (4.0 mg L-1). However, zinc exposure in the highest concentration (10 mg L-1) raised metabolic rate to around three times that of the control group. Ammonia excretion was not affected by exposure to GO and Cd. In contrast, exposure to Zn at 10 mg L-1 raised the rate to around 47%. The combined exposure of GO and Zn intensified the effects of the trace element, inducing responses in both biomarkers at lower concentrations and demonstrating that the interaction between elements increases zinc's effects. The combination Cd + GO only affects metabolic rate. Thus, this metabolic rate alone reveals that combined exposure potentiates effects of trace elements on fish metabolism.
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Affiliation(s)
| | - Francine Côa
- Instituto de Pesca-SP-APTA-SAA-Governo do Estado de São Paulo, Av. Prof. Besnard s/n, CEP. 11990-000, Cananéia, SP, Brazil
| | - Oswaldo Luiz Alves
- Laboratório de Química de Estado Sólido (LQES), Instituto de Química, UNICAMP, Campinas, SP, Brazil
| | - Diego Stéfani Teodoro Martinez
- Laboratório Nacional de Nanotecnologia (LNNano), Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), Campinas, SP, Brazil
| | - Edison Barbieri
- Instituto de Pesca-SP-APTA-SAA-Governo do Estado de São Paulo, Av. Prof. Besnard s/n, CEP. 11990-000, Cananéia, SP, Brazil.
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Clemente Z, Silva GH, de Souza Nunes MC, Martinez DST, Maurer-Morelli CV, Thomaz AA, Castro VLSS. Exploring the mechanisms of graphene oxide behavioral and morphological changes in zebrafish. Environ Sci Pollut Res Int 2019; 26:30508-30523. [PMID: 31463743 DOI: 10.1007/s11356-019-05870-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Accepted: 06/28/2019] [Indexed: 06/10/2023]
Abstract
The presence of natural organic matter such as humic acid (HA) can influence the behavior of graphene oxide (GO) in the aquatic environment. In this study, zebrafish embryos were analyzed after 5 and 7 days of exposure to GO (100 mg L-1) and HA (20 mg L-1) alone or together. The results indicated that, regardless of the presence of HA, larvae exposed to GO for 5 days showed an increase in locomotor activity, reduction in the yolk sac size, and total length and inhibition of AChE activity, but there was no difference in enzyme expression. The statistical analysis indicated that the reductions in total larval length, yolk sac size, and AChE activity in larvae exposed to GO persisted in relation to the control group, but there was a recovery of these parameters in groups also exposed to HA. Larvae exposed to GO for 7 days did not show significant differences in locomotor activity, but the RT-PCR gene expression analysis evidenced an increase in the AChE expression. Since the embryos exposed to GO showed a reduction in overall length, they were submitted to confocal microscopy and their muscle tissue configuration investigated. No changes were observed in the muscle tissue. The results indicated that HA is associated with the toxicity risk modulation by GO and that some compensatory homeostasis mechanisms may be involved in the developmental effects observed in zebrafish.
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Affiliation(s)
- Zaira Clemente
- Laboratory of Ecotoxicology and Biosafety, Embrapa Environment, Jaguariúna, São Paulo, 13820-000, Brazil.
- Brazilian National Nanotechnology Laboratory (LNNano), Brazilian Center for Research on Energy and Materials (CNPEM), Campinas, São Paulo, 13083-970, Brazil.
| | - Gabriela Helena Silva
- Laboratory of Ecotoxicology and Biosafety, Embrapa Environment, Jaguariúna, São Paulo, 13820-000, Brazil
- Brazilian National Nanotechnology Laboratory (LNNano), Brazilian Center for Research on Energy and Materials (CNPEM), Campinas, São Paulo, 13083-970, Brazil
- Center for Nuclear Energy in Agriculture (CENA), University of São Paulo (USP), Piracicaba, São Paulo, 13416-000, Brazil
| | - Miriam Celi de Souza Nunes
- Department of Medical Genetics, School of Medical Sciences, University of Campinas (UNICAMP), Campinas, São Paulo, 13087-883, Brazil
| | - Diego Stéfani Teodoro Martinez
- Brazilian National Nanotechnology Laboratory (LNNano), Brazilian Center for Research on Energy and Materials (CNPEM), Campinas, São Paulo, 13083-970, Brazil
- Center for Nuclear Energy in Agriculture (CENA), University of São Paulo (USP), Piracicaba, São Paulo, 13416-000, Brazil
| | - Claudia Vianna Maurer-Morelli
- Department of Medical Genetics, School of Medical Sciences, University of Campinas (UNICAMP), Campinas, São Paulo, 13087-883, Brazil
| | - Andre Alexandre Thomaz
- Department of Quantum Electronics, Institute of Physics "Gleb Wataghin", University of Campinas (UNICAMP), Campinas, São Paulo, 13083-859, Brazil
- National Institute of Photonics Applied to Cell Biology (INFABIC), University of Campinas (UNICAMP), Campinas, São Paulo, 13083-859, Brazil
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Barbieri E, Ferrarini AMT, Rezende KFO, Martinez DST, Alves OL. Effects of multiwalled carbon nanotubes and carbofuran on metabolism in Astyanax ribeirae, a native species. Fish Physiol Biochem 2019; 45:417-426. [PMID: 30276578 DOI: 10.1007/s10695-018-0573-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Accepted: 09/19/2018] [Indexed: 06/08/2023]
Abstract
The study of the toxic effect of carbofuran and multiwalled carbon nanotubes (MWCNTs) on Astyanax ribeirae metabolism is of paramount importance due to the increasing use of this pesticide in agriculture and in the production of nanotubes within the material industry. This study aimed to evaluate the effects of carbofuran, MWCNT, and the combination of these compounds on specific oxygen consumption and excretion of ammonia in A. ribeirae. Therefore, 65 fish were divided into three groups of treatments at varying concentrations: carbofuran (0.01, 0.05, 0.1, and 0.5 mg/L), MWCNT (0.1, 0.25, 0.5, and 1.0 mg/L), and 0.5 mg/L of MWCNT added to carbofuran concentrations (0.01, 0.05, 0.1, and 0.5 mg/L). The average specific oxygen consumption in the groups exposed to carbofuran, compared to the control, increased 73.49% at the 0.01 mg/L concentration and decreased 63.86% and 91.57% with treatments of 0.1 and 0.5 mg/L, respectively. For groups exposed to the MWCNT, there was an 83.91% drop with the 1.0 mg/L treatment, and the carbofuran + MWCNT groups recorded a decrease of 71.09%, 92.77%, and 93.98% at concentrations of 0.05, 0.1, and 0.5 mg/L, respectively. In relation to specific ammonia excretion, in groups exposed to carbofuran compared to the control, there was an increase of 134.37% and 200% with the 0.1 and 0.5 mg/L treatments, respectively. The group exposed to carbofuran + MWCNT experienced a decrease of 60% and 80% with treatments of 0.1 mg/L carbofuran + 0.5 mg/L MWCNT and 0.5 mg/L carbofuran + 0.5 mg/L MWCNT, respectively. Therefore, it was concluded that carbofuran + MWCNT interact, increasing the effects in Astyanax sp.
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Affiliation(s)
- Edison Barbieri
- Instituto de Pesca-APTA-SAA/SP-Governo do Estado de São Paulo, Caixa Postal 157, Av. Prof. Besnard s/n, Cananéia, SP, 11990-000, Brazil.
| | - Alessandra Maria Tegon Ferrarini
- Instituto de Pesca-APTA-SAA/SP-Governo do Estado de São Paulo, Caixa Postal 157, Av. Prof. Besnard s/n, Cananéia, SP, 11990-000, Brazil
| | | | - Diego Stéfani Teodoro Martinez
- Centro Nacional de Pesquisa em Energia e Materiais, Laboratório Nacional de Nanotecnologia, Campinas, São Paulo, Cep 13083, Brazil
| | - Oswaldo Luiz Alves
- Laboratory of Solid State Chemistry, Institute of Chemistry, University of Campinas, Campinas, São Paulo, 13083-970, Brazil
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Gonçalves SPCC, Strauss M, Martinez DST. The Positive Fate of Biochar Addition to Soil in the Degradation of PHBV-Silver Nanoparticle Composites. Environ Sci Technol 2018; 52:13845-13853. [PMID: 30354084 DOI: 10.1021/acs.est.8b01524] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The environmental contamination of soils by polymeric and nanomaterials is an increasing global concern. Polymeric composites containing silver nanoparticles (AgNP) are collectively one of the most important products of nanotechnology due to their remarkable antimicrobial activity. Biochars are a promising resource for environmental technologies for remediation of soils considering their high inorganic and organic pollutant adsorption capacity and microbial soil consortium stimulation. In this work we report, for the first time, the use of biochar material as a tool to accelerate the degradation of polyhydroxybutyrate- co-valerate (PHBV) and PHBV composites containing AgNP in a tropical soil system, under laboratory conditions. This positive effect is associated with microbial community improvement, which increased the degradation rate of the polymeric materials, as confirmed by integrated techniques for advanced materials characterization. The addition of 5-10% of sugarcane bagasse biochar into soil has increased the degradation of these polymeric materials 2 to 3 times after 30 days of soil incubation. However, the presence of silver nanoparticles in the PHBV significantly reduced the degradability potential of this nanocomposite by the soil microbial community. These results provide evidence that AgNP or Ag+ ions caused a decline in the total number of bacteria and fungi, which diminished the polymer degradation rate in soil. Finally, this work highlights the great potential of biochar resources for application in soil remediation technologies, such as polymeric (nano)material biodegradation.
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Affiliation(s)
- Suely Patrı Cia Costa Gonçalves
- Brazilian Nanotechnology National Laboratory (LNNano) , Brazilian Center for Research in Energy and Materials (CNPEM) , Campinas , São Paulo , Brazil . P.O. Box 6192, 13083-970
| | - Mathias Strauss
- Brazilian Nanotechnology National Laboratory (LNNano) , Brazilian Center for Research in Energy and Materials (CNPEM) , Campinas , São Paulo , Brazil . P.O. Box 6192, 13083-970
| | - Diego Stéfani Teodoro Martinez
- Brazilian Nanotechnology National Laboratory (LNNano) , Brazilian Center for Research in Energy and Materials (CNPEM) , Campinas , São Paulo , Brazil . P.O. Box 6192, 13083-970
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Campos-Garcia J, Martinez DST, Rezende KFO, da Silva JRMC, Alves OL, Barbieri E. Histopathological alterations in the gills of Nile tilapia exposed to carbofuran and multiwalled carbon nanotubes. Ecotoxicol Environ Saf 2016; 133:481-488. [PMID: 27543744 DOI: 10.1016/j.ecoenv.2016.07.041] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Revised: 07/26/2016] [Accepted: 07/27/2016] [Indexed: 06/06/2023]
Abstract
Carbofuran is a nematicide insecticide with a broad spectrum of action. Carbofuran has noxious effects in several species and has been banned in the USA and Europe; however, it is still used in Brazil. Aquatic organisms are not only exposed to pesticides but also to manufactured nanoparticles, and the potential interaction of these compounds therefore requires investigation. The aim of this study was to examine the histopathological alterations in the gills of Nile tilapia (Oreochromis niloticus) to determine possible effects of exposure to carbofuran, nitric acid-treated multiwalled carbon nanotubes (HNO3-MWCNTs) and the combination of carbofuran with nanotubes. Juvenile fish were exposed to different concentrations of carbofuran (0.1, 0.5, 2.0, 4.0 and 8.0mg/L), different concentrations of HNO3-MWCNTs (0.5, 1.0 and 2.0mg/L) or different concentrations of carbofuran (0.1, 0.5, 2.0, 4.0 and 8.0mg/L) with 1.0mg/L of HNO3-MWCNTs. After 24h of exposure, the animals were removed from the aquarium, the spinal cord was transversely sectioned, and the second gill arch was removed for histological evaluation. Common histological changes included dislocation of the epithelial cells, hyperplasia of the epithelial cells along the secondary lamellae, aneurism, and dilation and disarrangement of the capillaries. All the groups exposed to carbofuran demonstrated a dose-dependent correlation in the Histological Alteration Index; the values found for carbofuran and carbon nanotubes were up to 25% greater than for carbofuran alone. This result indicates an interaction between these toxicants, with enhanced ecotoxic effects. This work contributes to the understanding of the environmental impacts of nanomaterials on aquatic organisms, which is necessary for the sustainable development of nanotechnologies.
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Affiliation(s)
| | - Diego Stéfani Teodoro Martinez
- Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Brazil
| | | | | | - Oswaldo Luiz Alves
- Solid State Chemistry Laboratory and NanoBioss Laboratory, Institute of Chemistry, University of Campinas (UNICAMP), Campinas, Brazil
| | - Edison Barbieri
- Instituto de Pesca-APTA-SAASP-Governo do Estado de São Paulo, Cananeia, Brazil.
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Leal CV, Martinez DST, Más BA, Alves OL, Duek EAR. Influence of purified multiwalled carbon nanotubes on the mechanical and morphological behavior in poly (L-lactic acid) matrix. J Mech Behav Biomed Mater 2016; 59:547-560. [PMID: 27038896 DOI: 10.1016/j.jmbbm.2016.03.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 03/13/2016] [Accepted: 03/17/2016] [Indexed: 11/26/2022]
Abstract
Poly (L-latic acid) (PLLA) is a bioresorbable polymer widely used as a biomaterial, but its fragility can limit its use. An alternative is to produce polymer nanocomposites, which can enhance the mechanical properties of polymeric matrix, resulting in a material with differentiated properties. In this work, PLLA based nanocomposites containing 0.25, 0.5 and 1.0wt% of purified multiwalled carbon nanotubes (p-MWCNTs) were prepared by the solvent casting method. The morphology and mechanical properties results show an improvement in strain at break for 0.25 and 0.5wt% p-MWCNTs and an increase in stiffness and elastic modulus for all compositions. Nanocomposites presented a p-MWCNTs agglomeration; however, there was a good stress transfer between PLLA and p-MWCNTs, which was confirmed by the increase in the hardness and elastic modulus. Atomic force microscopy analysis indicated an increase in roughness after nanotube addition. The in vitro biological study showed that PLLA/p-MWCNTs nanocomposites are cytocompatible with osteoblasts cells. The capacity of PLLA nanocomposites to stimulate osteogenesis was investigated by alkaline phosphatase (ALP) activity assay. Higher ALP activity was found on osteoblasts cultured on nanocomposites with 0.25 and 0.5wt% p-MWCNT compared to neat PLLA, confirming that PLLA cytocompatibility was improved on these compositions. Finally, our results showed that by a simple and inexpensive solvent casting method, it is possible to manufacture biofunctional nanocomposites devices with potential for orthopedic applications.
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Affiliation(s)
- C V Leal
- Department of Materials Engineering, Faculty of Mechanical Engineering, University of Campinas, 13083-860 Campinas, SP, Brazil.
| | - D S T Martinez
- Solid State Chemistry Laboratory, Institute of Chemistry, University of Campinas, P.O. Box 6154, 13081-970 Campinas, SP, Brazil; Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), 1308-970 Campinas, SP, Brazil
| | - B A Más
- Faculty of Medical Sciences, Pontifical Catholic University of São Paulo - PUC-SP, 18030-095 Sorocaba, SP, Brazil
| | - O L Alves
- Solid State Chemistry Laboratory, Institute of Chemistry, University of Campinas, P.O. Box 6154, 13081-970 Campinas, SP, Brazil
| | - E A R Duek
- Department of Materials Engineering, Faculty of Mechanical Engineering, University of Campinas, 13083-860 Campinas, SP, Brazil; Faculty of Medical Sciences, Pontifical Catholic University of São Paulo - PUC-SP, 18030-095 Sorocaba, SP, Brazil
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Leal CV, Martinez DST, Espósito AR, Más BA, Moraes ACM, Alves OL, Duek EARD. CHARACTERIZATION ANDIN VITROEVALUATION OF POLY (L-LACTIC ACID) AND PURIFIED MULTIWALLED CARBON NANOTUBES NANOCOMPOSITES. QUIM NOVA 2015. [DOI: 10.5935/0100-4042.20150132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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de Faria AF, Martinez DST, Meira SMM, de Moraes ACM, Brandelli A, Filho AGS, Alves OL. Anti-adhesion and antibacterial activity of silver nanoparticles supported on graphene oxide sheets. Colloids Surf B Biointerfaces 2013; 113:115-24. [PMID: 24060936 DOI: 10.1016/j.colsurfb.2013.08.006] [Citation(s) in RCA: 218] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Revised: 07/30/2013] [Accepted: 08/03/2013] [Indexed: 12/31/2022]
Abstract
This work reports on the preparation, characterization and antibacterial activity of a nanocomposite formed from graphene oxide (GO) sheets decorated with silver nanoparticles (GO-Ag). The GO-Ag nanocomposite was prepared in the presence of AgNO3 and sodium citrate. The physicochemical characterization was performed by UV-vis spectroscopy, X-ray diffraction (XRD), thermogravimetric analysis (TGA), Raman spectroscopy and transmission electron microscopy (TEM). The average size of the silver nanoparticles anchored on the GO surface was 7.5 nm. Oxidation debris fragments (a byproduct adsorbed on the GO surface) were found to be crucial for the nucleation and growth of the silver nanoparticles. The antibacterial activity of the GO and GO-Ag nanocomposite against the microorganism Pseudomonas aeruginosa was investigated using the standard counting plate methodology. The GO dispersion showed no antibacterial activity against P. aeruginosa over the concentration range investigated. On the other hand, the GO-Ag nanocomposite displayed high biocidal activity with a minimum inhibitory concentration ranging from 2.5 to 5.0 μg/mL. The anti-biofilm activity toward P. aeruginosa adhered on stainless steel surfaces was also investigated. The results showed a 100% inhibition rate of the adhered cells after exposure to the GO-Ag nanocomposite for one hour. To the best of our knowledge, this work provides the first direct evidence that GO-Ag nanocomposites can inhibit the growth of microbial adhered cells, thus preventing the process of biofilm formation. These promising results support the idea that GO-Ag nanocomposites may be applied as antibacterial coatings material to prevent the development of biofilms in food packaging and medical devices.
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Affiliation(s)
- Andreia Fonseca de Faria
- Laboratório de Química do Estado Sólido, Instituto de Química, Universidade Estadual de Campinas, Caixa Postal 6154, Campinas 13083-970, São Paulo, Brazil.
| | - Diego Stéfani Teodoro Martinez
- Laboratório de Química do Estado Sólido, Instituto de Química, Universidade Estadual de Campinas, Caixa Postal 6154, Campinas 13083-970, São Paulo, Brazil
| | - Stela Maris Meister Meira
- Instituto de Ciência e Tecnologia de Alimentos, Universidade Federal do Rio Grande do Sul, Caixa Postal 15.090, Porto Alegre 91501-970, Rio Grande do Sul, Brazil
| | - Ana Carolina Mazarin de Moraes
- Laboratório de Química do Estado Sólido, Instituto de Química, Universidade Estadual de Campinas, Caixa Postal 6154, Campinas 13083-970, São Paulo, Brazil
| | - Adriano Brandelli
- Instituto de Ciência e Tecnologia de Alimentos, Universidade Federal do Rio Grande do Sul, Caixa Postal 15.090, Porto Alegre 91501-970, Rio Grande do Sul, Brazil
| | - Antonio Gomes Souza Filho
- Departamento de Física, Universidade Federal do Ceará, Caixa Postal 6030, Fortaleza 60455-900, Ceará, Brazil
| | - Oswaldo Luiz Alves
- Laboratório de Química do Estado Sólido, Instituto de Química, Universidade Estadual de Campinas, Caixa Postal 6154, Campinas 13083-970, São Paulo, Brazil.
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Pinto NV, de Andrade NF, Martinez DST, Alves OL, Souza Filho AG, Mota MRL, Nascimento KS, Cavada BS, Assreuy AMS. Inflammatory and hyperalgesic effects of oxidized multi-walled carbon nanotubes in rats. J Nanosci Nanotechnol 2013; 13:5276-5282. [PMID: 23882754 DOI: 10.1166/jnn.2013.7546] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We evaluated local inflammatory activity of oxidized multiwalled carbon nanotubes in rat experimental models of acute inflammation (paw edema and hyperalgesia) by analyzing their toxicity in non-mesoendothelial tissues. Subcutaneous injection of the nanotubes induced paw edema, that was maximal in the first 2 h after administration at 0.1 mg/kg (43.25 +/- 3.8 AUC) and 1 mg/kg (30.1 +/- 1.8 AUC) compared to saline (18.32 +/- 02.05 AUC). The histopathological analysis showed acute inflammation characterized by vasodilatation, edema formation, neutrophil infiltrate and tissue damage. The nanotubes also elicited hyperalgesic response, seen by the increase of animal paw withdrawal that was maximal in the first 3 hours. The data obtained at the 3rd h was: 75 +/- 9.3% (0.01 mg/kg), 58 +/- 8.3% (0.1 mg/kg) and 53 +/- 6.69% (1 mg/kg) in relation with saline (28 +/- 3.5%). In conclusion, the oxidized multiwalled carbon nanotubes elicit inflammatory and hyperalgesic effects associated to severe tissue damage in rats.
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Affiliation(s)
- Nilson Vieira Pinto
- Institute of Biomedical Sciences, State University of Ceara, Av Paranjana, 1700, 60740-000 Fortaleza, CE-Brazil
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Martinez DST, Freire MDGM, Mazzafera P, Araujo-Júnior RT, Bueno RD, Macedo MLR. Insecticidal effect of labramin, a lectin-like protein isolated from seeds of the beach apricot tree, Labramia bojeri, on the Mediterranean flour moth, Ephestia kuehniella. J Insect Sci 2012; 12:62. [PMID: 22938183 PMCID: PMC3481466 DOI: 10.1673/031.012.6201] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/19/2011] [Accepted: 08/15/2011] [Indexed: 06/01/2023]
Abstract
The objective of this work was to study the insecticidal effect of labramin, a protein that shows lectin-like properties. Labramin was isolated from seeds of the Beach Apricot tree, Labramia bojeri A. DC ex Dubard (Ericales: Sapotaceae), and assessed against the development of the Mediterranean flour moth Ephestia kuehniella Zeller (Lepidoptera: Pyralidae), an important pest of stored products such as corn, wheat, rice, and flour. Results showed that labramin caused 90% larval mortality when incorporated in an artificial diet at a level of 1% (w/w). The presence of 0.25% labramin in the diet affected the larval and pupal developmental periods and the percentage of emerging adults. Treatments resulted in elevated levels of trypsin activity in midgut and fecal materials, indicating that labramin may have affected enzyme-regulatory mechanisms by perturbing peritrophic membranes in the midgut of is. kuehniella larvae. The results of dietary experiments with E. kuehniella larvae showed a reduced efficiency for the conversion of ingested and digested food, and an increase in approximate digestibility and metabolic cost. These findings suggest that labramin may hold promise as a control agent to engineer crop plants for insect resistance.
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Affiliation(s)
- Diego Stéfani Teodoro Martinez
- Laboratório de Purificação de Proteínas e suas Funções Biológicas, Departamento de Tecnologia de Alimentos e Saúde Pública, Centro de Ciências Biológicas e da Saúde, Universidade Federal de Mato Grosso do Sul (UFMS), Campo Grande, MS, Brazil
- Departamento de Bioquímica, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas,
SP, Brazil
| | - Maria das Graças Machado Freire
- Laboratório de Química e Biomoléculas (LAQUIBIO), Centro de Pesquisas e Pós-graduação, lnstitutos Superiores do CENSA (ISECENSA), Campos do Goytacazes, RJ, Brazil
| | - Paulo Mazzafera
- Departamento de Fisiologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP),
Campinas, SP, Brazil
| | - Roberto Theodoro Araujo-Júnior
- Laboratório de Purificação de Proteínas e suas Funções Biológicas, Departamento de Tecnologia de Alimentos e Saúde Pública, Centro de Ciências Biológicas e da Saúde, Universidade Federal de Mato Grosso do Sul (UFMS), Campo Grande, MS, Brazil
| | - Rafael Delmond Bueno
- Laboratório de Purificação de Proteínas e suas Funções Biológicas, Departamento de Tecnologia de Alimentos e Saúde Pública, Centro de Ciências Biológicas e da Saúde, Universidade Federal de Mato Grosso do Sul (UFMS), Campo Grande, MS, Brazil
| | - Maria Lígia Rodrigues Macedo
- Laboratório de Purificação de Proteínas e suas Funções Biológicas, Departamento de Tecnologia de Alimentos e Saúde Pública, Centro de Ciências Biológicas e da Saúde, Universidade Federal de Mato Grosso do Sul (UFMS), Campo Grande, MS, Brazil
- Departamento de Bioquímica, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas,
SP, Brazil
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