Dataset Information

Silver Nanoparticles-Composing Alginate/Gelatine Hydrogel Improves Wound Healing In Vivo.

ABSTRACT: Polymer hydrogels have been suggested as dressing materials for the treatment of cutaneous wounds and tissue revitalization. In this work, we report the development of a hydrogel composed of natural polymers (sodium alginate and gelatin) and silver nanoparticles (AgNPs) with recognized antimicrobial activity for healing cutaneous lesions. For the development of the hydrogel, different ratios of sodium alginate and gelatin have been tested, while different concentrations of AgNO3 precursor (1.0, 2.0, and 4.0 mM) were assayed for the production of AgNPs. The obtained AgNPs exhibited a characteristic peak between 430-450 nm in the ultraviolet-visible (UV-Vis) spectrum suggesting a spheroidal form, which was confirmed by Transmission Electron Microscopy (TEM). Fourier Transform Infra-red (FT-IR) analysis suggested the formation of strong intermolecular interactions as hydrogen bonds and electrostatic attractions between polymers, showing bands at 2920, 2852, 1500, and 1640 cm-1. Significant bactericidal activity was observed for the hydrogel, with a Minimum Inhibitory Concentration (MIC) of 0.50 µg/mL against Pseudomonas aeruginosa and 53.0 µg/mL against Staphylococcus aureus. AgNPs were shown to be non-cytotoxic against fibroblast cells. The in vivo studies in female Wister rats confirmed the capacity of the AgNP-loaded hydrogels to reduce the wound size compared to uncoated injuries promoting histological changes in the healing tissue over the time course of wound healing, as in earlier development and maturation of granulation tissue. The developed hydrogel with AgNPs has healing potential for clinical applications.

SUBMITTER: Diniz FR

PROVIDER: S-EPMC7075327 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature

ACCESS DATA

Publications

Silver Nanoparticles-Composing Alginate/Gelatine Hydrogel Improves Wound Healing In Vivo.

Diniz F R FR Maia R C A P RCAP Rannier L L Andrade L N LN V Chaud M M da Silva C F CF Corrêa C B CB de Albuquerque Junior R L C RLC P da Costa L L Shin S R SR Hassan S S Sanchez-Lopez E E Souto E B EB Severino P P

Nanomaterials (Basel, Switzerland) 20200223 2

Polymer hydrogels have been suggested as dressing materials for the treatment of cutaneous wounds and tissue revitalization. In this work, we report the development of a hydrogel composed of natural polymers (sodium alginate and gelatin) and silver nanoparticles (AgNPs) with recognized antimicrobial activity for healing cutaneous lesions. For the development of the hydrogel, different ratios of sodium alginate and gelatin have been tested, while different concentrations of AgNO<sub>3</sub> precu ...[more]

PMID: 32102229

Similar Datasets

Project description:Extracellular vesicles (EVs) are on the edge of innovation aimed at regenerative and therapeutic applications, including wound healing, by containing therapeutic agents originating from secreting cells. Moreover, silver nanoparticles (AgNPs) play a role in wound healing because they have antiseptic activities. Therefore, in this study, we used sequencing technology to investigate the mRNA profile in UCMSC-derived exosomes (EXs). We also attempted to determine the role of the transcriptome, particularly in cutaneous wound healing, using bioinformatics analysis. Additionally, we investigated the efficacy of utilising a combination of UCMSC-derived EXs and AgNPs on burned animal models. Results showed that a large number of protein-coding genes (4578 genes) have been detected in UCMSC-derived EXs, among which 2004 genes are upregulated in exosomes while 2574 genes are downregulated compared to secreting cells. Interestingly, many genes enriched in exosomes were associated with the biology of the wound healing process. Gene ontology (GO) term and Kyoto Encyclopaedia of Genes and Genomes (KEGG) pathway analysis indicated the upregulated exosomal genes belonging to GO terms and KEGG pathways related to signaling pathways such as DNA replication, ribosome, cell cycle, and pyrimidine metabolism. Further investigations that aimed to test exosomes and AgNPs in wound healing stimulation confirmed the faster healing capacity belongs to all exosomes, AgNPs, and a combination of EXs and AgNPs in the early healing process. The exosomes also expressed their capacity to enhance the dermal fibroblast proliferation. Our findings indicated the selective sorting of mRNAs into EXs, the potential of EXs, and the combination of EXs with AgNPs in cutaneous wound healing. Extracellular vesicles (EVs) are on the edge of innovation aimed at regenerative and therapeutic applications, including wound healing, by containing therapeutic agents originating from secreting cells. Moreover, silver nanoparticles (AgNPs) play a role in wound healing because they have antiseptic activities. Therefore, in this study, we used sequencing technology to investigate the mRNA profile in UCMSC-derived exosomes (EXs). We also attempted to determine the role of the transcriptome, particularly in cutaneous wound healing, using bioinformatics analysis. Additionally, we investigated the efficacy of utilising a combination of UCMSC-derived EXs and AgNPs on burned animal models. Results showed that a large number of protein-coding genes (4578 genes) have been detected in UCMSC-derived EXs, among which 2004 genes are upregulated in exosomes while 2574 genes are downregulated compared to secreting cells. Interestingly, many genes enriched in exosomes were associated with the biology of the wound healing process. Gene ontology (GO) term and Kyoto Encyclopaedia of Genes and Genomes (KEGG) pathway analysis indicated the upregulated exosomal genes belonging to GO terms and KEGG pathways related to signaling pathways such as DNA replication, ribosome, cell cycle, and pyrimidine metabolism. Further investigations that aimed to test exosomes and AgNPs in wound healing stimulation confirmed the faster healing capacity belongs to all exosomes, AgNPs, and a combination of EXs and AgNPs in the early healing process. The exosomes also expressed their capacity to enhance the dermal fibroblast proliferation. Our findings indicated the selective sorting of mRNAs into EXs, the potential of EXs, and the combination of EXs with AgNPs in cutaneous wound healing. Extracellular vesicles (EVs) are on the edge of innovation aimed at regenerative and therapeutic applications, including wound healing, by containing therapeutic agents originating from secreting cells. Moreover, silver nanoparticles (AgNPs) play a role in wound healing because they have antiseptic activities. Therefore, in this study, we used sequencing technology to investigate the mRNA profile in UCMSC-derived exosomes (EXs). We also attempted to determine the role of the transcriptome, particularly in cutaneous wound healing, using bioinformatics analysis. Additionally, we investigated the efficacy of utilising a combination of UCMSC-derived EXs and AgNPs on burned animal models. Results showed that a large number of protein-coding genes (4578 genes) have been detected in UCMSC-derived EXs, among which 2004 genes are upregulated in exosomes while 2574 genes are downregulated compared to secreting cells. Interestingly, many genes enriched in exosomes were associated with the biology of the wound healing process. Gene ontology (GO) term and Kyoto Encyclopaedia of Genes and Genomes (KEGG) pathway analysis indicated the upregulated exosomal genes belonging to GO terms and KEGG pathways related to signaling pathways such as DNA replication, ribosome, cell cycle, and pyrimidine metabolism. Further investigations that aimed to test exosomes and AgNPs in wound healing stimulation confirmed the faster healing capacity belongs to all exosomes, AgNPs, and a combination of EXs and AgNPs in the early healing process. The exosomes also expressed their capacity to enhance the dermal fibroblast proliferation. Our findings indicated the selective sorting of mRNAs into EXs, the potential of EXs, and the combination of EXs with AgNPs in cutaneous wound healing.

Dataset Information

Silver Nanoparticles-Composing Alginate/Gelatine Hydrogel Improves Wound Healing In Vivo.

Publications

Silver Nanoparticles-Composing Alginate/Gelatine Hydrogel Improves Wound Healing In Vivo.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure