Produção Nacional
Revisado por pares
New Silver(I) Coordination Compound Loaded into Polymeric Nanoparticles as a Strategy to Improve In Vitro Anti- Helicobacter pylori Activity
2020; American Chemical Society; Volume: 17; Issue: 7 Linguagem: Inglês
10.1021/acs.molpharmaceut.9b01264
ISSN1543-8392
AutoresBruna Almeida Furquim de Camargo, Débora E.S. Silva, Anderson Noronha da Silva, Débora L. Campos, Tamara Renata Machado Ribeiro, Maria Júlia Mieli, Melina Borges Teixeira Zanatta, Patrícia Bento da Silva, Fernando R. Pavan, Cristiano G. Moreira, Flávia Aparecida Resende, Amauri Antônio Menegário, Marlus Chorilli, Adelino V.G. Netto, Taís Maria Bauab,
Tópico(s)Antimicrobial agents and applications
ResumoHelicobacter pylori inhabits the gastric epithelium and can promote the development of gastric disorders, such as peptic ulcers, acute and chronic gastritis, mucosal lymphoid tissue (MALT), and gastric adenocarcinomas. To use nanotechnology as a tool to increase the antibacterial activity of silver I [Ag(I)] compounds, this study suggests a new strategy for H. pylori infections, which have hitherto been difficult to control. [Ag (PhTSC·HCl)2] (NO3)·H2O (compound 1) was synthesized, characterized, and loaded into polymeric nanoparticles (PN1). PN1 had been developed by nanoprecipitation with poly(ε-caprolactone) polymer and poloxamer 407 surfactant. System characterization assays showed that the PNs had adequate particle sizes and ζ-potentials. Transmission electron microscopy confirmed the formation of polymeric nanoparticles (PNs). Compound 1 had a minimum inhibitory concentration for H. pylori of 3.90 μg/mL, which was potentiated to 0.781 μg/mL after loading. The minimum bactericidal concentration of 7.81 μg/mL was potentiated 5-fold to 1.56 μg/mL in PN. Compound 1 loaded in PN1 displayed better activity for H. pylori biofilm formation and mature biofilm. PN1 reduced the toxicity of compound 1 to MRC-5 cells. Loading compound 1 into PN1 inhibited the mutagenicity of the free compound. In vivo, the system allowed survival of Galleria mellonella larvae at a concentration of 200 μg/mL. This is the first demonstration of the antibacterial activity of a silver complex enclosed in polymeric nanoparticles against H. pylori.
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