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Pereyra JYDC, Barbero CA, Acevedo DF, Yslas EI. Antibacterial effects of in situzinc oxide nanoparticles generated inside the poly (acrylamide-co-hydroxyethylmethacrylate) nanocomposite. Nanotechnology 2022; 34:045101. [PMID: 36215962 DOI: 10.1088/1361-6528/ac98cf] [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: 07/01/2022] [Accepted: 10/10/2022] [Indexed: 06/16/2023]
Abstract
The present work reports the antibacterial activity againstPseudomonasaeruginosaof a nanocomposite made of zinc oxide nanoparticles dispersed in a poly(acrylamide-co-hydroxyethylmethacrylate) matrix (PAAm-Hema-ZnONPs). Thein situsynthesis of ZnONPs inside of the PAAm-Hema crosslinked network is described. Moreover, the physicochemical properties of the PAAm-Hema-ZnONPs nanocomposite are analyzed. The results confirm that the PAAm-Hema hydrogel provides an excellent scaffold to generate ZnONPs. The presence of ZnONPs inside the hydrogel was confirmed by UV-visible (band at 320 nm), by Infrared spectroscopy (peak at 470 cm-1), SEM, and TEM images. The presence of NPs in PAAm-Hema diminish the swelling percentage by 70%, and the Young modulus by 33.7%, compared with pristine hydrogel. The 75% of ZnONPs are released from the nanocomposite after 48 h of spontaneous diffusion, allowing the use of the nanocomposite as an antibacterial agent.In vitro, the agar diffusion test presents an inhibition halo againstP. aeruginosabacteria 50% higher than the unloaded hydrogel. Also, the PAAm-Hema-ZnONPs live/dead test shows 54% of dead cells more than the hydrogel. These results suggest that the easy, one-step way generated composites can be used in biomedical applications as antimicrobial agents.
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Affiliation(s)
- J Y Del C Pereyra
- Research Institute for Energy Technologies and Advanced Materials (IITEMA), National University of Río Cuarto (UNRC)-National Council of Scientific and Technical Research (CONICET), Ruta Nacional N◦ 36, Km 601, Río Cuarto (Córdoba) 5800, Argentina
- Chemistry Department, FCEFQyN-National University of Río Cuarto, Río Cuarto (Córdoba) 5800, Argentina
| | - C A Barbero
- Research Institute for Energy Technologies and Advanced Materials (IITEMA), National University of Río Cuarto (UNRC)-National Council of Scientific and Technical Research (CONICET), Ruta Nacional N◦ 36, Km 601, Río Cuarto (Córdoba) 5800, Argentina
- Chemistry Department, FCEFQyN-National University of Río Cuarto, Río Cuarto (Córdoba) 5800, Argentina
| | - D F Acevedo
- Research Institute for Energy Technologies and Advanced Materials (IITEMA), National University of Río Cuarto (UNRC)-National Council of Scientific and Technical Research (CONICET), Ruta Nacional N◦ 36, Km 601, Río Cuarto (Córdoba) 5800, Argentina
- Chemical Technology Department, Faculty of Engineering, National University of Río Cuarto, Río Cuarto (Córdoba) 5800, Argentina
| | - E I Yslas
- Research Institute for Energy Technologies and Advanced Materials (IITEMA), National University of Río Cuarto (UNRC)-National Council of Scientific and Technical Research (CONICET), Ruta Nacional N◦ 36, Km 601, Río Cuarto (Córdoba) 5800, Argentina
- Molecular Biology Department, FCEFQyN-National University of Río Cuarto, Río Cuarto (Córdoba) 5800, Argentina
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Cesari AB, Paulucci NS, Yslas EI, Dardanelli MS. Immobilization of Bradyrhizobium and Azospirillum in alginate matrix for long time of storage maintains cell viability and interaction with peanut. Appl Microbiol Biotechnol 2020; 104:10145-10164. [PMID: 33025128 DOI: 10.1007/s00253-020-10910-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 09/04/2020] [Accepted: 09/14/2020] [Indexed: 11/25/2022]
Abstract
Immobilizarion of PGPR for agricultural applications aims to provide temporary physical protection from stressful environmental conditions and the gradual release of cells for successful root colonization, release the cells gradually. In this work, we immobilized Bradyrhizobium sp. SEMIA6144 or Azospirillum brasilense Az39 cells in 2% alginate beads prepared by ionic gelation process, and then stored up to 12 months at 4 °C. Alginate matrix showed interaction with the immobilized bacteria (FTIR), allowed a constant release of cells, and improved their viability and capability to interact with Arachis hypogaea. Cell number into beads reached 107 CFU.bead-1; however, viability decreased from 4 months of storage for Az39, while it was maintained up to 12 months for SEMIA6144, showing a low metabolic activity measured by the MTT assay. Adhesion of SEMIA6144 and Az39 from new beads to peanut root was 11.5% and 16%, respectively, higher than non-immobilized bacteria. Peanut inoculation with 12 months storage SEMIA6144 beads significantly increased root length and biomass at 30 days of growth, and under restrictive water condition (RWC), nodulation and total plant N content increased compared with liquid inoculation. Our results demonstrate that immobilization of SEMIA6144 and Az39 in alginate matrix is a potential alternative to enhance peanut growth even under RWC. KEY POINTS: • Alginate encapsulation enhances viability of SEMIA6144 or Az39 under storage at 4 °C for 1 year. • Alginate beads 2% ensure the gradual release of the microorganisms. • Cells from beads stored for long periods present chemotaxis and adhesion to peanut root. • Peanut inoculation with 1-year-old SEMIA6144 beads improves nodulation and growth in RWC.
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Affiliation(s)
- Adriana B Cesari
- INBIAS, Instituto de Biotecnología Ambiental y Salud, CONICET, Rio Cuarto, Argentina
- Departamento de Biología Molecular, Universidad Nacional de Río Cuarto, Ruta Nacional 36, Km, 601, Rio Cuarto, Argentina
| | - Natalia S Paulucci
- INBIAS, Instituto de Biotecnología Ambiental y Salud, CONICET, Rio Cuarto, Argentina
- Departamento de Biología Molecular, Universidad Nacional de Río Cuarto, Ruta Nacional 36, Km, 601, Rio Cuarto, Argentina
| | - Edith I Yslas
- Departamento de Biología Molecular, Universidad Nacional de Río Cuarto, Ruta Nacional 36, Km, 601, Rio Cuarto, Argentina.
- IITEMA, Instituto de Investigaciones en Tecnologías Energéticas y Materiales Avanzados, CONICET, Rio Cuarto, Argentina.
| | - Marta Susana Dardanelli
- INBIAS, Instituto de Biotecnología Ambiental y Salud, CONICET, Rio Cuarto, Argentina.
- Departamento de Biología Molecular, Universidad Nacional de Río Cuarto, Ruta Nacional 36, Km, 601, Rio Cuarto, Argentina.
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Monerris M, Broglia MF, Yslas EI, Barbero CA, Rivarola CR. Highly effective antimicrobial nanocomposites based on hydrogel matrix and silver nanoparticles: long-lasting bactericidal and bacteriostatic effects. Soft Matter 2019; 15:8059-8066. [PMID: 31549699 DOI: 10.1039/c9sm01118h] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Antimicrobial nanocomposites (NCs) are being used as an alternative antibacterial therapy for killing antibiotic-resistant pathogenic bacteria. The NCs are made of Ag nanoparticles (AgNPs) inside biocompatible hydrogel matrixes. The NCs were synthesized by the absorption of AgNO3 solution into a hydrogel matrix, followed by UV light irradiation, without using additional toxic reactants. The hydrogels used as matrixes are based on N-isopropylacrylamide (NIPAM) and copolymers with different functional groups: 2-acrylamide-2-methylpropanesulfonic acid (AMPS), N-hydroxyethylacrylamide (HEAA) and (3-acrylamidepropil)trimethylammonium chloride (APTMAC). Neutral, anionic and cationic groups were added to the matrixes in order to study their effects on the release of antibacterial species. The NCs were characterized by UV-visible spectroscopy and transmission electronic microscopy. The kinetics of the release of Ag+ ions from the NCs were followed by UV-visible spectroscopy at 300 nm. Biological experiments were based on the plate count method and agar diffusion testing against Pseudomonas aeruginosa. The bacterial death rate using the NCs is higher than when PNIPAM and nanoparticles in solution are used and seems to be related to the large amount of AgNPs contained inside the gels. In all cases, inhibition and diffusion halos were observed upon the exposure of bacterial cultures on agar to NC discs. The presence of both halos confirmed the bactericidal and bacteriostatic effects of the NCs. The reusability (prolonged use) of the materials was demonstrated until the Ag-NP content was exhausted. The NCs with a higher antibacterial capacity are based on a PNIPAM-co-6%APTMAC matrix. It was demonstrated that these NC materials have the capacity to maintain an aseptic/antiseptic zone for 7 to 15 days.
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Affiliation(s)
- Melisa Monerris
- Institute of Research in Energy Technologies and Advanced Materials (IITEMA), National University of Río Cuarto (UNRC)-National Council of Scientific and Technical Research (CONICET), Chemistry Department, Faculty of Exact, Physical-Chemical and Natural Sciences, National University of Rio Cuarto, Rio Cuarto (Córdoba), Argentina. and IITEMA, CONICET, Biology Department, Faculty of Exact, Physical-Chemical and Natural Sciences, National University of Rio Cuarto (UNRC), Rio Cuarto (Córdoba), Argentina
| | - Martin F Broglia
- Institute of Research in Energy Technologies and Advanced Materials (IITEMA), National University of Río Cuarto (UNRC)-National Council of Scientific and Technical Research (CONICET), Chemistry Department, Faculty of Exact, Physical-Chemical and Natural Sciences, National University of Rio Cuarto, Rio Cuarto (Córdoba), Argentina. and Engineering Faculty, National University of Rio Cuarto (UNRC), Rio Cuarto (Córdoba), Argentina
| | - Edith I Yslas
- IITEMA, CONICET, Biology Department, Faculty of Exact, Physical-Chemical and Natural Sciences, National University of Rio Cuarto (UNRC), Rio Cuarto (Córdoba), Argentina
| | - Cesar A Barbero
- Institute of Research in Energy Technologies and Advanced Materials (IITEMA), National University of Río Cuarto (UNRC)-National Council of Scientific and Technical Research (CONICET), Chemistry Department, Faculty of Exact, Physical-Chemical and Natural Sciences, National University of Rio Cuarto, Rio Cuarto (Córdoba), Argentina.
| | - Claudia R Rivarola
- Institute of Research in Energy Technologies and Advanced Materials (IITEMA), National University of Río Cuarto (UNRC)-National Council of Scientific and Technical Research (CONICET), Chemistry Department, Faculty of Exact, Physical-Chemical and Natural Sciences, National University of Rio Cuarto, Rio Cuarto (Córdoba), Argentina.
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Bongiovanni Abel S, Gallarato LA, Dardanelli MS, Barbero CA, Rivarola CR, Yslas EI. Photothermal lysis of
Pseudomonas aeruginosa
by polyaniline nanoparticles under near infrared irradiation. Biomed Phys Eng Express 2018. [DOI: 10.1088/2057-1976/aacf33] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Abel SB, Yslas EI, Rivarola CR, Barbero CA. Synthesis of polyaniline (PANI) and functionalized polyaniline (F-PANI) nanoparticles with controlled size by solvent displacement method. Application in fluorescence detection and bacteria killing by photothermal effect. Nanotechnology 2018; 29:125604. [PMID: 29355838 DOI: 10.1088/1361-6528/aaa99a] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Polyaniline nanoparticles (PANI-NPs) were easily obtained applying the solvent displacement method by using N-methylpyrrolidone (NMP) as good solvent and water as poor solvent. Different polymers such as polyvinylpyrrolidone (PVP), chondroitin sulfate (ChS), polyvinyl alcohol (PVA), and polyacrylic acid (PAA) were used as stabilizers. Dynamic light scattering and scanning electron microscopy corroborated the size and morphology of the formed NPs. It was demonstrated that the size of nanoparticles could be controlled by setting the concentration of PANI in NMP, the NMP to water ratio, and the stabilizer's nature. The functionalization and fluorescence of NPs were checked by spectroscopic techniques. Since polyaniline show only weak intrinsic luminescence, fluorescent groups were linked to the polyaniline chains prior to the nanoparticle formation using a linker. Polyaniline chains were functionalized by nucleophilic addition of cysteamine trough the thiol group thereby incorporating pendant primary aliphatic amine groups to the polyaniline backbone. Then, dansyl chloride (DNS-Cl), which could act as an extrinsic chromophore, was conjugated to the amine pendant groups. Later, the functionalized polyaniline was used to produce nanoparticles by solvent displacement. The optical and functional properties of fluorescent nanoparticles (F-PANI-NPs) were determined. F-PANI-NPs in the conductive state (pH < 4) are able to absorb near infrared radiation (NIR) creating a photothermal effect in an aqueous medium. Thus, multifunctional nanoparticles are obtained. The application of NIR on a F-PANI-NPs dispersion in contact with Pseudomonas aeruginosa causes bacterial death. Therefore, the F-PANI-NPs could be tracked and applied to inhibit different diseases caused by pathogenic microorganisms and resistant to antibiotics as well as a new disinfection method to surgical materials.
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Affiliation(s)
- Silvestre Bongiovanni Abel
- Instituto de Investigaciones en Tecnologías Energéticas y Materiales Avanzados (IITEMA), Universidad Nacional de Río Cuarto (UNRC)-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Ruta Nacional N° 36, Km 601, Agencia Postal N° 3, 5800, Río Cuarto, Argentina
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Pereyra JY, Cuello EA, Rodriguez RC, Barbero CA, Yslas EI, Salavagione HJ, Acevedo DF. Synthesis and characterization of GO-hydrogels composites. ACTA ACUST UNITED AC 2017. [DOI: 10.1088/1757-899x/258/1/012002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Yslas EI, Cavallo P, Acevedo DF, Barbero CA, Rivarola VA. Cysteine modified polyaniline films improve biocompatibility for two cell lines. Materials Science and Engineering: C 2015; 51:51-6. [DOI: 10.1016/j.msec.2015.02.049] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Revised: 08/03/2014] [Accepted: 02/24/2015] [Indexed: 11/25/2022]
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Ibarra LE, Tarres L, Bongiovanni S, Barbero CA, Kogan MJ, Rivarola VA, Bertuzzi ML, Yslas EI. Assessment of polyaniline nanoparticles toxicity and teratogenicity in aquatic environment using Rhinella arenarum model. Ecotoxicol Environ Saf 2015; 114:84-92. [PMID: 25617831 DOI: 10.1016/j.ecoenv.2015.01.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [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: 09/05/2014] [Revised: 01/12/2015] [Accepted: 01/13/2015] [Indexed: 06/04/2023]
Abstract
With the rapid growth of nanotechnology and the applications of nanoparticles, environmental exposure to these particles is increasing. However, their impact in human and environmental health is not well studied. Anurans, with life stage comprising embryos, tadpoles and adults, have an extremely permeable skin which makes them excellent indicators of environmental health. This study evaluated the acute toxicity effects of polyaniline nanoparticles (PANI-Np) in different dispersant on embryos and larvae of Rhinella arenarum. The results showed that LC50 of PANI-Np dispersed in polyvinylpyrrolidone (PVP) were 1,500 mg/L, while LC50 by PANI-Np dispersed in PVP+PNIPAM (polyN-isopropylacrilamide) showed a highest toxicity (1,170 mg/L). The embryo teratogenicity increased with increasing exposure concentration in both kinds of PANI-Np although in PANI-Np1, there is an increased teratogenic effect associated with the polymer stabilizer PVP.
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Affiliation(s)
- Luis E Ibarra
- Departamento de Biología Molecular, Universidad Nacional de Río Cuarto, Agencia Postal Nro 3, X580BYA Río Cuarto, Argentina
| | - Lucrecia Tarres
- Departamento de Biología Molecular, Universidad Nacional de Río Cuarto, Agencia Postal Nro 3, X580BYA Río Cuarto, Argentina
| | - Silvestre Bongiovanni
- Departamento de Química, Universidad Nacional de Río Cuarto, Agencia Postal Nro 3, X580BYA Río Cuarto, Argentina
| | - César A Barbero
- Departamento de Química, Universidad Nacional de Río Cuarto, Agencia Postal Nro 3, X580BYA Río Cuarto, Argentina
| | - Marcelo J Kogan
- Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile
| | - Viviana A Rivarola
- Departamento de Biología Molecular, Universidad Nacional de Río Cuarto, Agencia Postal Nro 3, X580BYA Río Cuarto, Argentina
| | - Mabel L Bertuzzi
- Departamento de Biología Molecular, Universidad Nacional de Río Cuarto, Agencia Postal Nro 3, X580BYA Río Cuarto, Argentina
| | - Edith I Yslas
- Departamento de Biología Molecular, Universidad Nacional de Río Cuarto, Agencia Postal Nro 3, X580BYA Río Cuarto, Argentina.
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Yslas EI, Ibarra LE, Peralta DO, Barbero CA, Rivarola VA, Bertuzzi ML. Polyaniline nanofibers: acute toxicity and teratogenic effect on Rhinella arenarum embryos. Chemosphere 2012; 87:1374-1380. [PMID: 22386461 DOI: 10.1016/j.chemosphere.2012.02.033] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2011] [Revised: 02/06/2012] [Accepted: 02/08/2012] [Indexed: 05/31/2023]
Abstract
The fate and effect of nanomaterials in the environment is of paramount importance towards the technological application of the materials. This work shows the ecotoxicological potential of polyaniline (PANI) nanofibers in the larvae Rhinella arenarum by means of AMPHITOX test. Acute toxicity of PANI nanofibers towards embryos of the common South American toad R. arenarum (Anura: bufonidae) was evaluated in the premetamorphosis (stage 25) larvae. The exposure of R. arenarum larvae to at dose of 150, 250 and 400 mg L(-1) resulted in 100% viability within 96 h exposure. The embryos at 2-4 blastomers stage (early life stage teratogenic test) revealed that embryos were not killed and no teratogenic effects were observed when embryos were incubated with PANI nanofibers (150 and 250 mg L(-1)), while only a growth retardation of embryos was induced at levels of 250 mg PANI nanofibers L(-1). On the other hand, at 400 mg L(-1) concentration, a reduction in the body length of larvae and tail malformation was observed. This results suggest that a concentration-dependent toxicity is operative, typified by phenotypes that had abnormal body axes. The presence of PANI nanofibers in gut contents and its excretion by larval stages of R. arenarum was confirmed by UV-visible spectroscopy.
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Affiliation(s)
- Edith I Yslas
- Departamento de Biología Molecular, Universidad Nacional de Río Cuarto, Agencia Postal Nro 3, X580BYA Río Cuarto, Argentina.
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Acevedo DF, Martínez G, Arana JT, Yslas EI, Mucklich F, Barbero C, Salavagione HJ. Easy Way to Fabricate Nanostructures on a Reactive Polymer Surface. J Phys Chem B 2009; 113:14661-6. [DOI: 10.1021/jp9074515] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Diego F. Acevedo
- Departamento de Química, Universidad Nacional de Río Cuarto, Ruta Nacional 36 Km 601, X5804ZAB, Río Cuarto, Córdoba, Argentina, Instituto de Ciencia y Tecnología de Polímeros, CSIC, Juan de la Cierva 3, 28006 Madrid, Spain, and Department for Materials Science, Functional Materials, Saarland University, D-66041, Saarbrücken, Germany
| | - Gerardo Martínez
- Departamento de Química, Universidad Nacional de Río Cuarto, Ruta Nacional 36 Km 601, X5804ZAB, Río Cuarto, Córdoba, Argentina, Instituto de Ciencia y Tecnología de Polímeros, CSIC, Juan de la Cierva 3, 28006 Madrid, Spain, and Department for Materials Science, Functional Materials, Saarland University, D-66041, Saarbrücken, Germany
| | - Javier Toledo Arana
- Departamento de Química, Universidad Nacional de Río Cuarto, Ruta Nacional 36 Km 601, X5804ZAB, Río Cuarto, Córdoba, Argentina, Instituto de Ciencia y Tecnología de Polímeros, CSIC, Juan de la Cierva 3, 28006 Madrid, Spain, and Department for Materials Science, Functional Materials, Saarland University, D-66041, Saarbrücken, Germany
| | - Edith I. Yslas
- Departamento de Química, Universidad Nacional de Río Cuarto, Ruta Nacional 36 Km 601, X5804ZAB, Río Cuarto, Córdoba, Argentina, Instituto de Ciencia y Tecnología de Polímeros, CSIC, Juan de la Cierva 3, 28006 Madrid, Spain, and Department for Materials Science, Functional Materials, Saarland University, D-66041, Saarbrücken, Germany
| | - Frank Mucklich
- Departamento de Química, Universidad Nacional de Río Cuarto, Ruta Nacional 36 Km 601, X5804ZAB, Río Cuarto, Córdoba, Argentina, Instituto de Ciencia y Tecnología de Polímeros, CSIC, Juan de la Cierva 3, 28006 Madrid, Spain, and Department for Materials Science, Functional Materials, Saarland University, D-66041, Saarbrücken, Germany
| | - César Barbero
- Departamento de Química, Universidad Nacional de Río Cuarto, Ruta Nacional 36 Km 601, X5804ZAB, Río Cuarto, Córdoba, Argentina, Instituto de Ciencia y Tecnología de Polímeros, CSIC, Juan de la Cierva 3, 28006 Madrid, Spain, and Department for Materials Science, Functional Materials, Saarland University, D-66041, Saarbrücken, Germany
| | - Horacio J. Salavagione
- Departamento de Química, Universidad Nacional de Río Cuarto, Ruta Nacional 36 Km 601, X5804ZAB, Río Cuarto, Córdoba, Argentina, Instituto de Ciencia y Tecnología de Polímeros, CSIC, Juan de la Cierva 3, 28006 Madrid, Spain, and Department for Materials Science, Functional Materials, Saarland University, D-66041, Saarbrücken, Germany
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Yslas EI, Durantini EN, Rivarola VA. Zinc-(II) 2,9,16,23-tetrakis (methoxy) phthalocyanine: Potential photosensitizer for use in photodynamic therapy in vitro. Bioorg Med Chem 2007; 15:4651-60. [PMID: 17467998 DOI: 10.1016/j.bmc.2007.03.079] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2006] [Revised: 03/16/2007] [Accepted: 03/26/2007] [Indexed: 11/21/2022]
Abstract
Photodynamic therapy (PDT) is an innovative treatment for several types of malignant and non-malignant disease. In the present study, ZnPcOCH(3) was investigated on a human larynx-carcinoma cell line (Hep-2) for its use in PDT. This drug exhibited favourable properties as a photosensitizer in vitro because ZnPcOCH(3) is able to penetrate efficiently in the cytoplasm of cultured cancer cells and is partially localized in lysosomes. The results show that ZnPcOCH(3)-PDT-induced apoptosis by caspase dependent pathway. The new compound shows a good photosensitizing efficiency in vitro on Hep-2 cells, encouraging further in vivo studies.
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Affiliation(s)
- Edith I Yslas
- Departamento de Biología Molecular, Universidad Nacional de Río Cuarto, Agencia Postal Nro 3, X580BYA Río Cuarto, Argentina
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Yslas EI, Alvarez MG, Rumie Vittar NB, Bertuzzi M, Durantini EN, Rivarola V. Physiological parameters and biodistribution of 5,10,15,20-tetra (4-methoxyphenyl) porphyrin in rats. Biomed Pharmacother 2002; 56:498-502. [PMID: 12504271 DOI: 10.1016/s0753-3322(02)00289-5] [Citation(s) in RCA: 3] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
Abstract
Physiological parameters on hepatic and renal functionality and biodistribution, accumulation and elimination, in different organs of the 5,10,15,20-tetra (4-methoxyphenyl) porphyrin (TMP) were determined in Wistar rats. The transport of TMP by low-density (LDL) and high-density lipoproteins (HDL) was also investigated. The photosensitizer is accumulated in the spleen, where its concentration is significantly increased 21 d post-injection; it also accumulates in the liver and in a lower proportion, in the duodenum, and poorly in brain and muscle. The urine and serum biochemical parameters reached normal values both in control and treated groups. The glomerular filtrate rate was not affected by the TMP treatment in any of the studied times. These results would indicate that the sensitizer does not modify the renal glomerular function. TMP is mainly eliminated from the organism via the bile-gut pathway. Considering the total amount of porphyrin bound to both lipoproteins (LDL and HDL) in comparison with the total value of the TMP in serum, it can be inferred that a large amount of the agent is transported by lipoproteins in the plasma. This study proves information about the behavior of TMP in vivo under dark conditions. The results can be used to design photodynamic treatments using this porphyrin model as the sensitizer.
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Affiliation(s)
- E I Yslas
- Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Agencia Postal No. 3, 5800 Río Cuarto, Córdoba, Argentina
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Milanesio ME, Morán FS, Yslas EI, Alvarez MG, Rivarola V, Durantini EN. Synthesis and biological evaluation of methoxyphenyl porphyrin derivatives as potential photodynamic agents. Bioorg Med Chem 2001; 9:1943-9. [PMID: 11504630 DOI: 10.1016/s0968-0896(01)00138-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A new meso-2,4,6-trimethoxyphenyl porphyrin covalently linked to a 2',6'-dinitro-4'-trifluoromethylphenyl group by an amine bond 5 and its metal complex with Cd(II) 6 was prepared. The photodynamic activities of 5 and 6 were evaluated in vitro on Hep-2 cells. A considerable increase in the photocytotoxic effect was found for 6, which has higher singlet molecular oxygen, O(2)((1)Delta(g)), production.
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Affiliation(s)
- M E Milanesio
- Departamento de Química y Física, Universidad Nacional de Río Cuarto, Agencia Postal Nro 3, 5800, Río Cuarto, Argentina
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Milanesio ME, Alvarez MG, Yslas EI, Borsarelli CD, Silber JJ, Rivarola V, Durantini EN. Photodynamic studies of metallo 5,10,15,20-tetrakis(4-methoxyphenyl) porphyrin: photochemical characterization and biological consequences in a human carcinoma cell line. Photochem Photobiol 2001; 74:14-21. [PMID: 11460532 DOI: 10.1562/0031-8655(2001)074<0014:psomtm>2.0.co;2] [Citation(s) in RCA: 72] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The photodynamic activities of the free-base 5,10,15,20-tetrakis(4-methoxyphenyl)porphyrin (TMP) and their metal complexes with zinc(II) (ZnTMP), copper(II) (CuTMP) and cadmium(II) (CdTMP) have been compared in two systems: reverse micelle of n-heptane/sodium bis(2-ethylhexyl)sulfosuccinate/water bearing photooxidizable substrates and Hep-2 human larynx carcinoma cell line. The quantum yields of singlet molecular oxygen, O2(1 delta g), production (phi delta) of TMP, ZnTMP and CdTMP in tetrahydrofuran, were determined yielding values of 0.65, 0.73 and 0.73, respectively, while O2(1 delta g) formation was not detected for CuTMP. In the reverse micellar system, the amino acid L-tryptophan (Trp) was used as biological substrate to analyze the O2(1 delta g)-mediated photooxidation. The observed rate constants for Trp photooxidation (kobsTrp) were proportional to the sensitizer quantum yield of O2(1 delta g). A value of approximately 2 x 10(7) s-1 M-1 was found for the second-order rate constant of Trp (krTry) in this system. The response of Hep-2 cells to cytotoxicity photoinduced by these agents in a biological medium was studied. The Hep-2 cultures were treated with 1 microM of porphyrin for 24 h at 37 degrees C and the cells exposed to visible light. The cell survival at different light exposure levels was dependent on phi delta. Under these conditions, the cytotoxic effect increases in the order: Cu-TMP << TMP < ZnTMP approximately CdTMP, correlating with the production of O2(1 delta g). A similar behavior was observed in both the chemical and biological media indicating that the O2(1 delta g) mediation appears to be mainly responsible for the cell inactivation.
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Affiliation(s)
- M E Milanesio
- Departamento de Química y Física, Universidad Nacional de Río Cuarto, Agencia Postal Nro. 3, 5800 Río Cuarto, Argentina
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La Penna M, Alvarez MG, Yslas EI, Rivarola V, Durantini EN. Photodynamic activity of 5,10,15,20-tetrakis(4-methoxyphenyl)porphyrin on the Hep-2 human carcinoma cell line: effect of light dose and wavelength range. Bioorg Chem 2001; 29:130-9. [PMID: 11437388 DOI: 10.1006/bioo.2001.1204] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The photodynamic activity of 5,10,15,20-tetrakis(4-methoxyphenyl)porphyrin (TMP) has been investigated in two systems: reverse micelles of n-heptane/sodium bis(2-ethylhexyl)sulfosuccinate (AOT)/water-bearing photooxidizable substrates and on a Hep-2 human carcinoma cell line. The effect of variation in the light dose and wavelength range (360-800, 455-800, and 590-800 nm) was compared in both media. The aerobic singlet oxygen-mediated photooxidation of L-tryptophan (Trp) was used as a model of biological substrate in a micellar system. A considerable increase of the observed rate constants of Trp (k(Trp)(obs)) was noted, increasing the irradiated area of the TMP spectrum. In vitro, the survival curves of Hep-2 cells, treated with TMP, were markedly dependent on the light wavelength ranges used for irradiation. A linear behavior between k(Trp)(obs) and the photoinactivation rate of Hep-2 cells was found, indicating that the singlet oxygen (1O2 ) is the main species responsible for cell inactivation. These results contributed to an understanding of the photodynamic process yielded by this porphyrin in vitro and the sensitivity of Hep-2 cells to photodamage.
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Affiliation(s)
- M La Penna
- Departamento de Química y Física, Universidad Nacional de Río Cuarto, Argentina
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