Evaluation of antibacterial activity of nitric oxide-releasing polymeric particles against Staphylococcus aureus and Escherichia coli from bovine mastitis

Autor(es)

Cardozo, Viviane F. ^[1] ; Lancheros, Cesar A. C. ^[1] ; Narciso, Adelia M. ^[2] ; Valereto, Elaine C. S. ^[2] ; Kobayashi, Renata K. T. ^[1] ; Seabra, Amedea B. ^[2] ; Nakazato, Gerson ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Londrina, Dept Microbiol, BR-86055990 Londrina, PR - Brazil

^[2] Univ Fed Sao Paulo, Exact & Earth Sci Dept, BR-09913030 Diadema, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: International Journal of Pharmaceutics; v. 473, n. 1-2, p. 20-29, OCT 1 2014.
• Citações Web of Science: 37

Resumo

Bovine mastitis is a serious veterinary disease that causes great loss to the dairy industry worldwide. It is a major infectious disease and is difficult to manage and control. Furthermore, emerging multidrug resistant bacteria that cause mastitis have complicated such management. The free radical nitric oxide (NO) is a potent antimicrobial agent. Thus, the aims of this study were to prepare and evaluate the antibacterial activity of nitric oxide-releasing polymeric particles against Staphylococcus aureus (MBSA) and Escherichia coli (MBEC), which were isolated from bovine mastitis. Fifteen MBSA isolates and fifteen MBEC were collected from subclinical and clinical bovine mastitis. Biocompatible polymeric particles composed of alginate/chitosan or chitosan/sodium tripolyphosphate (TPP) were prepared and used to encapsulate mercaptosuccinic acid (MSA), which is a thiol-containing molecule. Nitrosation of thiol groups of MSA-containing particles formed S-nitroso-MSA particles, which are NO donors. The NO release kinetics from the S-nitroso-MSA particles showed sustained and controlled NO release over several hours. The antibacterial activity of NO-releasing particles was evaluated by incubating the particles with an MBSA multi-resistant strain, which is responsible for bovine mastitis. The minimum inhibitory concentration for S-nitroso-MSA-alginate/chitosan particles against MBSA ranged from 125 mu g/mL to 250 mu g/mL. The results indicate that NO-releasing polymeric particles are an interesting approach to combating bacteria resistance in bovine mastitis treatment and prevention. (C) 2014 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 13/13096-6 - Nanopartículas poliméricas doadoras de óxido nítrico com ação antibacteriana
• Beneficiário: Adelia Maria Narciso
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 13/07132-0 - Preparação e caracterização de nanopartículas de alginato/quitosana doadoras de óxido nítrico
• Beneficiário: Elaine Cristina Sanches Valereto
• Modalidade de apoio: Bolsas no Brasil - Programa Capacitação - Treinamento Técnico
• Processo FAPESP: 12/17053-7 - Nanopartículas doadoras de óxido nítrico para aplicações biomédicas
• Beneficiário: Amedea Barozzi Seabra
• Modalidade de apoio: Auxílio à Pesquisa - Regular