Green-synthesized silver nanoparticles using Aloe maculata extract as antibacterial agent for potential topical application

Autores
Franceschinis, Gaston Oscar; Beverina, Mariana; Corleto, Ingrid Merlina; Sosa, Ayelen Morena; Lillo, Rolando Cristian Rodrigo; Arias Cassará, María Lucrecia; Alonso, Silvia del Valle; Maffia, Paulo Cesar; Martinetti Montanari, Jorge Anibal; Tuttolomondo, María Eugenia; Calienni, Maria Natalia
Año de publicación
2023
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Nowadays, antibiotic resistance poses a threat to public health worldwide. For this reason, non-traditional antibacterial products, such as silver nanoparticles (AgNPs), offer an opportunity to address this issue. Although AgNPs have been proven to be effective antimicrobial agents, we studied the antibacterial and antibiofilm effects of two novel AgNPs (AgNP-Aloe-1 and AgNP-Aloe-2) obtained by green synthesis, their cytotoxicity on a cell line derived from human keratinocytes, and their skin penetration. These AgNPs were obtained here for the first time from an Aloe maculata aqueous extract as a reducing and capping agent of Ag(I), with varying the initial silver concentrations (5 and 9 mM of AgNO3 for AgNP-Aloe-1 and AgNP-Aloe-2, respectively). For all the assessments, these were compared with AgNPs obtained from a traditional chemical method employing hydroxylamine hydrochloride as a reducing agent and AgNO3 (AgNP–NH2OH·HCl). The AgNPs were characterized physicochemically by TEM, DLS, Zeta potential, UV–vis, fluorescence, and Raman spectroscopy. Additionally, the concentration of silver forming AgNPs and the reaction yield were determined. Both green-synthesized AgNPs showed an improvement in the inhibition of bacterial growth after 24 h of incubation for E. coli and S. aureus. AgNP-Aloe-1 presented a MIC 4 times lower for both bacteria compared to AgNP–NH2OH·HCl, while AgNP-Aloe-2 presented a MIC 32 and 8 time lower for E. coli and S. aureus, respectively. Moreover, they produced a decrease in the biofilm biomass formation from P. aeruginosa at lower concentrations (6.25 μg/ml for AgNP-Aloe-1 and 1.56 μg/ml for AgNP-Aloe-2) than AgNP-NH2OH·HCl which only showed a reduction of 30% at the maximum concentration tested. However, AgNP-Aloe-1 and AgNP-Aloe-2 were less efficient in eradicating pre-formed biofilm. Even though AgNP-Aloe-2 showed a lower reaction yield (31.7%) compared to AgNP-Aloe-1 (68.5%), they showed the best antibacterial activity. On the other hand, green-synthesized AgNPs were mainly retained in the stratum corneum of intact skin and reached lower concentrations in the viable epidermis than AgNP–NH2OH·HCl. Moreover, AgNP-Aloe-1 and AgNP-Aloe-2 did not show cytotoxic effects on human keratinocytes at the antibacterial concentrations. Their improved performance and lower skin penetration could be attributed to their physicochemical properties, such as size (10–25 nm), charge (around −10 mV), and shape (tendency towards a spherical shape), but mainly to the presence of phytocompounds from the extract that remained attached to the AgNPs, as observed by Raman spectroscopy and UV–vis. For the reasons mentioned above, these novel AgNPs obtained by a more environmentally friendly method have the potential to be used as antibacterial agents, particularly for topical applications.
Fil: Franceschinis, Gaston Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Multidisciplinario de Biología Celular. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Multidisciplinario de Biología Celular. Universidad Nacional de La Plata. Instituto Multidisciplinario de Biología Celular; Argentina
Fil: Beverina, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Química del Noroeste. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química del Noroeste; Argentina
Fil: Corleto, Ingrid Merlina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Hurlingham; Argentina
Fil: Sosa, Ayelen Morena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Multidisciplinario de Biología Celular. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Multidisciplinario de Biología Celular. Universidad Nacional de La Plata. Instituto Multidisciplinario de Biología Celular; Argentina
Fil: Lillo, Rolando Cristian Rodrigo. Universidad Nacional de Hurlingham; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
Fil: Arias Cassará, María Lucrecia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Química del Noroeste. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química del Noroeste; Argentina
Fil: Alonso, Silvia del Valle. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Multidisciplinario de Biología Celular. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Multidisciplinario de Biología Celular. Universidad Nacional de La Plata. Instituto Multidisciplinario de Biología Celular; Argentina
Fil: Maffia, Paulo Cesar. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Hurlingham; Argentina
Fil: Martinetti Montanari, Jorge Anibal. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Hurlingham; Argentina
Fil: Tuttolomondo, María Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
Fil: Calienni, Maria Natalia. Universidad Nacional de Hurlingham; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Multidisciplinario de Biología Celular. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Multidisciplinario de Biología Celular. Universidad Nacional de La Plata. Instituto Multidisciplinario de Biología Celular; Argentina
Materia
ANTIBACTERIAL
ANTIBIOFILM
CYTOTOXICITY
SILVER NANOPARTICLES
SKIN PENETRATION
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/223897
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/223897
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Green-synthesized silver nanoparticles using Aloe maculata extract as antibacterial agent for potential topical applicationFranceschinis, Gaston OscarBeverina, MarianaCorleto, Ingrid MerlinaSosa, Ayelen MorenaLillo, Rolando Cristian RodrigoArias Cassará, María LucreciaAlonso, Silvia del ValleMaffia, Paulo CesarMartinetti Montanari, Jorge AnibalTuttolomondo, María EugeniaCalienni, Maria NataliaANTIBACTERIALANTIBIOFILMCYTOTOXICITYSILVER NANOPARTICLESSKIN PENETRATIONhttps://purl.org/becyt/ford/2.10https://purl.org/becyt/ford/2Nowadays, antibiotic resistance poses a threat to public health worldwide. For this reason, non-traditional antibacterial products, such as silver nanoparticles (AgNPs), offer an opportunity to address this issue. Although AgNPs have been proven to be effective antimicrobial agents, we studied the antibacterial and antibiofilm effects of two novel AgNPs (AgNP-Aloe-1 and AgNP-Aloe-2) obtained by green synthesis, their cytotoxicity on a cell line derived from human keratinocytes, and their skin penetration. These AgNPs were obtained here for the first time from an Aloe maculata aqueous extract as a reducing and capping agent of Ag(I), with varying the initial silver concentrations (5 and 9 mM of AgNO3 for AgNP-Aloe-1 and AgNP-Aloe-2, respectively). For all the assessments, these were compared with AgNPs obtained from a traditional chemical method employing hydroxylamine hydrochloride as a reducing agent and AgNO3 (AgNP–NH2OH·HCl). The AgNPs were characterized physicochemically by TEM, DLS, Zeta potential, UV–vis, fluorescence, and Raman spectroscopy. Additionally, the concentration of silver forming AgNPs and the reaction yield were determined. Both green-synthesized AgNPs showed an improvement in the inhibition of bacterial growth after 24 h of incubation for E. coli and S. aureus. AgNP-Aloe-1 presented a MIC 4 times lower for both bacteria compared to AgNP–NH2OH·HCl, while AgNP-Aloe-2 presented a MIC 32 and 8 time lower for E. coli and S. aureus, respectively. Moreover, they produced a decrease in the biofilm biomass formation from P. aeruginosa at lower concentrations (6.25 μg/ml for AgNP-Aloe-1 and 1.56 μg/ml for AgNP-Aloe-2) than AgNP-NH2OH·HCl which only showed a reduction of 30% at the maximum concentration tested. However, AgNP-Aloe-1 and AgNP-Aloe-2 were less efficient in eradicating pre-formed biofilm. Even though AgNP-Aloe-2 showed a lower reaction yield (31.7%) compared to AgNP-Aloe-1 (68.5%), they showed the best antibacterial activity. On the other hand, green-synthesized AgNPs were mainly retained in the stratum corneum of intact skin and reached lower concentrations in the viable epidermis than AgNP–NH2OH·HCl. Moreover, AgNP-Aloe-1 and AgNP-Aloe-2 did not show cytotoxic effects on human keratinocytes at the antibacterial concentrations. Their improved performance and lower skin penetration could be attributed to their physicochemical properties, such as size (10–25 nm), charge (around −10 mV), and shape (tendency towards a spherical shape), but mainly to the presence of phytocompounds from the extract that remained attached to the AgNPs, as observed by Raman spectroscopy and UV–vis. For the reasons mentioned above, these novel AgNPs obtained by a more environmentally friendly method have the potential to be used as antibacterial agents, particularly for topical applications.Fil: Franceschinis, Gaston Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Multidisciplinario de Biología Celular. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Multidisciplinario de Biología Celular. Universidad Nacional de La Plata. Instituto Multidisciplinario de Biología Celular; ArgentinaFil: Beverina, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Química del Noroeste. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química del Noroeste; ArgentinaFil: Corleto, Ingrid Merlina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Hurlingham; ArgentinaFil: Sosa, Ayelen Morena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Multidisciplinario de Biología Celular. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Multidisciplinario de Biología Celular. Universidad Nacional de La Plata. Instituto Multidisciplinario de Biología Celular; ArgentinaFil: Lillo, Rolando Cristian Rodrigo. Universidad Nacional de Hurlingham; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; ArgentinaFil: Arias Cassará, María Lucrecia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Química del Noroeste. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química del Noroeste; ArgentinaFil: Alonso, Silvia del Valle. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Multidisciplinario de Biología Celular. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Multidisciplinario de Biología Celular. Universidad Nacional de La Plata. Instituto Multidisciplinario de Biología Celular; ArgentinaFil: Maffia, Paulo Cesar. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Hurlingham; ArgentinaFil: Martinetti Montanari, Jorge Anibal. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Hurlingham; ArgentinaFil: Tuttolomondo, María Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; ArgentinaFil: Calienni, Maria Natalia. Universidad Nacional de Hurlingham; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Multidisciplinario de Biología Celular. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Multidisciplinario de Biología Celular. Universidad Nacional de La Plata. Instituto Multidisciplinario de Biología Celular; ArgentinaElsevier Inc2023-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/223897Franceschinis, Gaston Oscar; Beverina, Mariana; Corleto, Ingrid Merlina; Sosa, Ayelen Morena; Lillo, Rolando Cristian Rodrigo; et al.; Green-synthesized silver nanoparticles using Aloe maculata extract as antibacterial agent for potential topical application; Elsevier Inc; OpenNano; 12; 7-2023; 1-252352-9520CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S2352952023000270info:eu-repo/semantics/altIdentifier/doi/10.1016/j.onano.2023.100148info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:52:44Zoai:ri.conicet.gov.ar:11336/223897instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:52:45.043CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Green-synthesized silver nanoparticles using Aloe maculata extract as antibacterial agent for potential topical application
title Green-synthesized silver nanoparticles using Aloe maculata extract as antibacterial agent for potential topical application
spellingShingle Green-synthesized silver nanoparticles using Aloe maculata extract as antibacterial agent for potential topical application
Franceschinis, Gaston Oscar
ANTIBACTERIAL
ANTIBIOFILM
CYTOTOXICITY
SILVER NANOPARTICLES
SKIN PENETRATION
title_short Green-synthesized silver nanoparticles using Aloe maculata extract as antibacterial agent for potential topical application
title_full Green-synthesized silver nanoparticles using Aloe maculata extract as antibacterial agent for potential topical application
title_fullStr Green-synthesized silver nanoparticles using Aloe maculata extract as antibacterial agent for potential topical application
title_full_unstemmed Green-synthesized silver nanoparticles using Aloe maculata extract as antibacterial agent for potential topical application
title_sort Green-synthesized silver nanoparticles using Aloe maculata extract as antibacterial agent for potential topical application
dc.creator.none.fl_str_mv Franceschinis, Gaston Oscar
Beverina, Mariana
Corleto, Ingrid Merlina
Sosa, Ayelen Morena
Lillo, Rolando Cristian Rodrigo
Arias Cassará, María Lucrecia
Alonso, Silvia del Valle
Maffia, Paulo Cesar
Martinetti Montanari, Jorge Anibal
Tuttolomondo, María Eugenia
Calienni, Maria Natalia
author Franceschinis, Gaston Oscar
author_facet Franceschinis, Gaston Oscar
Beverina, Mariana
Corleto, Ingrid Merlina
Sosa, Ayelen Morena
Lillo, Rolando Cristian Rodrigo
Arias Cassará, María Lucrecia
Alonso, Silvia del Valle
Maffia, Paulo Cesar
Martinetti Montanari, Jorge Anibal
Tuttolomondo, María Eugenia
Calienni, Maria Natalia
author_role author
author2 Beverina, Mariana
Corleto, Ingrid Merlina
Sosa, Ayelen Morena
Lillo, Rolando Cristian Rodrigo
Arias Cassará, María Lucrecia
Alonso, Silvia del Valle
Maffia, Paulo Cesar
Martinetti Montanari, Jorge Anibal
Tuttolomondo, María Eugenia
Calienni, Maria Natalia
author2_role author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv ANTIBACTERIAL
ANTIBIOFILM
CYTOTOXICITY
SILVER NANOPARTICLES
SKIN PENETRATION
topic ANTIBACTERIAL
ANTIBIOFILM
CYTOTOXICITY
SILVER NANOPARTICLES
SKIN PENETRATION
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.10
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Nowadays, antibiotic resistance poses a threat to public health worldwide. For this reason, non-traditional antibacterial products, such as silver nanoparticles (AgNPs), offer an opportunity to address this issue. Although AgNPs have been proven to be effective antimicrobial agents, we studied the antibacterial and antibiofilm effects of two novel AgNPs (AgNP-Aloe-1 and AgNP-Aloe-2) obtained by green synthesis, their cytotoxicity on a cell line derived from human keratinocytes, and their skin penetration. These AgNPs were obtained here for the first time from an Aloe maculata aqueous extract as a reducing and capping agent of Ag(I), with varying the initial silver concentrations (5 and 9 mM of AgNO3 for AgNP-Aloe-1 and AgNP-Aloe-2, respectively). For all the assessments, these were compared with AgNPs obtained from a traditional chemical method employing hydroxylamine hydrochloride as a reducing agent and AgNO3 (AgNP–NH2OH·HCl). The AgNPs were characterized physicochemically by TEM, DLS, Zeta potential, UV–vis, fluorescence, and Raman spectroscopy. Additionally, the concentration of silver forming AgNPs and the reaction yield were determined. Both green-synthesized AgNPs showed an improvement in the inhibition of bacterial growth after 24 h of incubation for E. coli and S. aureus. AgNP-Aloe-1 presented a MIC 4 times lower for both bacteria compared to AgNP–NH2OH·HCl, while AgNP-Aloe-2 presented a MIC 32 and 8 time lower for E. coli and S. aureus, respectively. Moreover, they produced a decrease in the biofilm biomass formation from P. aeruginosa at lower concentrations (6.25 μg/ml for AgNP-Aloe-1 and 1.56 μg/ml for AgNP-Aloe-2) than AgNP-NH2OH·HCl which only showed a reduction of 30% at the maximum concentration tested. However, AgNP-Aloe-1 and AgNP-Aloe-2 were less efficient in eradicating pre-formed biofilm. Even though AgNP-Aloe-2 showed a lower reaction yield (31.7%) compared to AgNP-Aloe-1 (68.5%), they showed the best antibacterial activity. On the other hand, green-synthesized AgNPs were mainly retained in the stratum corneum of intact skin and reached lower concentrations in the viable epidermis than AgNP–NH2OH·HCl. Moreover, AgNP-Aloe-1 and AgNP-Aloe-2 did not show cytotoxic effects on human keratinocytes at the antibacterial concentrations. Their improved performance and lower skin penetration could be attributed to their physicochemical properties, such as size (10–25 nm), charge (around −10 mV), and shape (tendency towards a spherical shape), but mainly to the presence of phytocompounds from the extract that remained attached to the AgNPs, as observed by Raman spectroscopy and UV–vis. For the reasons mentioned above, these novel AgNPs obtained by a more environmentally friendly method have the potential to be used as antibacterial agents, particularly for topical applications.
Fil: Franceschinis, Gaston Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Multidisciplinario de Biología Celular. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Multidisciplinario de Biología Celular. Universidad Nacional de La Plata. Instituto Multidisciplinario de Biología Celular; Argentina
Fil: Beverina, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Química del Noroeste. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química del Noroeste; Argentina
Fil: Corleto, Ingrid Merlina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Hurlingham; Argentina
Fil: Sosa, Ayelen Morena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Multidisciplinario de Biología Celular. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Multidisciplinario de Biología Celular. Universidad Nacional de La Plata. Instituto Multidisciplinario de Biología Celular; Argentina
Fil: Lillo, Rolando Cristian Rodrigo. Universidad Nacional de Hurlingham; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
Fil: Arias Cassará, María Lucrecia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Química del Noroeste. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química del Noroeste; Argentina
Fil: Alonso, Silvia del Valle. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Multidisciplinario de Biología Celular. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Multidisciplinario de Biología Celular. Universidad Nacional de La Plata. Instituto Multidisciplinario de Biología Celular; Argentina
Fil: Maffia, Paulo Cesar. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Hurlingham; Argentina
Fil: Martinetti Montanari, Jorge Anibal. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Hurlingham; Argentina
Fil: Tuttolomondo, María Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
Fil: Calienni, Maria Natalia. Universidad Nacional de Hurlingham; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Multidisciplinario de Biología Celular. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Multidisciplinario de Biología Celular. Universidad Nacional de La Plata. Instituto Multidisciplinario de Biología Celular; Argentina
description Nowadays, antibiotic resistance poses a threat to public health worldwide. For this reason, non-traditional antibacterial products, such as silver nanoparticles (AgNPs), offer an opportunity to address this issue. Although AgNPs have been proven to be effective antimicrobial agents, we studied the antibacterial and antibiofilm effects of two novel AgNPs (AgNP-Aloe-1 and AgNP-Aloe-2) obtained by green synthesis, their cytotoxicity on a cell line derived from human keratinocytes, and their skin penetration. These AgNPs were obtained here for the first time from an Aloe maculata aqueous extract as a reducing and capping agent of Ag(I), with varying the initial silver concentrations (5 and 9 mM of AgNO3 for AgNP-Aloe-1 and AgNP-Aloe-2, respectively). For all the assessments, these were compared with AgNPs obtained from a traditional chemical method employing hydroxylamine hydrochloride as a reducing agent and AgNO3 (AgNP–NH2OH·HCl). The AgNPs were characterized physicochemically by TEM, DLS, Zeta potential, UV–vis, fluorescence, and Raman spectroscopy. Additionally, the concentration of silver forming AgNPs and the reaction yield were determined. Both green-synthesized AgNPs showed an improvement in the inhibition of bacterial growth after 24 h of incubation for E. coli and S. aureus. AgNP-Aloe-1 presented a MIC 4 times lower for both bacteria compared to AgNP–NH2OH·HCl, while AgNP-Aloe-2 presented a MIC 32 and 8 time lower for E. coli and S. aureus, respectively. Moreover, they produced a decrease in the biofilm biomass formation from P. aeruginosa at lower concentrations (6.25 μg/ml for AgNP-Aloe-1 and 1.56 μg/ml for AgNP-Aloe-2) than AgNP-NH2OH·HCl which only showed a reduction of 30% at the maximum concentration tested. However, AgNP-Aloe-1 and AgNP-Aloe-2 were less efficient in eradicating pre-formed biofilm. Even though AgNP-Aloe-2 showed a lower reaction yield (31.7%) compared to AgNP-Aloe-1 (68.5%), they showed the best antibacterial activity. On the other hand, green-synthesized AgNPs were mainly retained in the stratum corneum of intact skin and reached lower concentrations in the viable epidermis than AgNP–NH2OH·HCl. Moreover, AgNP-Aloe-1 and AgNP-Aloe-2 did not show cytotoxic effects on human keratinocytes at the antibacterial concentrations. Their improved performance and lower skin penetration could be attributed to their physicochemical properties, such as size (10–25 nm), charge (around −10 mV), and shape (tendency towards a spherical shape), but mainly to the presence of phytocompounds from the extract that remained attached to the AgNPs, as observed by Raman spectroscopy and UV–vis. For the reasons mentioned above, these novel AgNPs obtained by a more environmentally friendly method have the potential to be used as antibacterial agents, particularly for topical applications.
publishDate 2023
dc.date.none.fl_str_mv 2023-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/223897
Franceschinis, Gaston Oscar; Beverina, Mariana; Corleto, Ingrid Merlina; Sosa, Ayelen Morena; Lillo, Rolando Cristian Rodrigo; et al.; Green-synthesized silver nanoparticles using Aloe maculata extract as antibacterial agent for potential topical application; Elsevier Inc; OpenNano; 12; 7-2023; 1-25
2352-9520
CONICET Digital
CONICET
url http://hdl.handle.net/11336/223897
identifier_str_mv Franceschinis, Gaston Oscar; Beverina, Mariana; Corleto, Ingrid Merlina; Sosa, Ayelen Morena; Lillo, Rolando Cristian Rodrigo; et al.; Green-synthesized silver nanoparticles using Aloe maculata extract as antibacterial agent for potential topical application; Elsevier Inc; OpenNano; 12; 7-2023; 1-25
2352-9520
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S2352952023000270
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.onano.2023.100148
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
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dc.publisher.none.fl_str_mv Elsevier Inc
publisher.none.fl_str_mv Elsevier Inc
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
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instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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