2
|
Ribeiro KL, Frías IAM, Franco OL, Dias SC, Sousa-Junior AA, Silva ON, Bakuzis AF, Oliveira MDL, Andrade CAS. Clavanin A-bioconjugated Fe 3O 4/Silane core-shell nanoparticles for thermal ablation of bacterial biofilms. Colloids Surf B Biointerfaces 2018; 169:72-81. [PMID: 29751343 DOI: 10.1016/j.colsurfb.2018.04.055] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Revised: 03/13/2018] [Accepted: 04/26/2018] [Indexed: 01/27/2023]
Abstract
The use of central venous catheters (CVC) is highly associated with nosocomial blood infections and its use largely requires a systematic assessment of benefits and risks. Bacterial contamination of these tubes is frequent and may result in development of microbial consortia also known as biofilm. The woven nature of biofilm provides a practical defense against antimicrobial agents, facilitating bacterial dissemination through the patient's body and development of antimicrobial resistance. In this work, the authors describe the modification of CVC tubing by immobilizing Fe3O4-aminosilane core-shell nanoparticles functionalized with antimicrobial peptide clavanin A (clavA) as an antimicrobial prophylactic towards Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa and Klebsiella pneumoniae. Its anti-biofilm-attachment characteristic relies in clavA natural activity to disrupt the bacterial lipidic membrane. The aminosilane shell prevents iron leaching, which is an important nutrient for bacterial growth. Fe3O4-clavA-modified CVCs showed to decrease Gram-negative bacteria attachment up to 90% when compared to control clean CVC. Additionally, when hyperthermal treatment is triggered for 5 min at 80 °C in a tubing that already presents bacterial biofilm (CVC-BF), the viability of attached bacteria reduces up to 88%, providing an efficient solution to avoid changing catheter.
Collapse
Affiliation(s)
- Kalline L Ribeiro
- Programa de Pós-Graduação em Inovação Terapêutica, Universidade Federal de Pernambuco, 50670-901 Recife, PE, Brazil.
| | - Isaac A M Frías
- Rede Pesquisa em Biotecnologia e Biodiversidade Pró-Centro-Oeste, Instituto Nacional de Ciência e Tecnologia, Universidade Federal de Pernambuco, Brazil.
| | - Octavio L Franco
- Centro de Análise Proteômicas e Bioquímicas de Brasília, Universidade Católica de Brasília, Brasília, DF, Brazil; S-Inova Biotech, Pós-graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, MS, Brazil.
| | - Simoni C Dias
- Centro de Análise Proteômicas e Bioquímicas de Brasília, Universidade Católica de Brasília, Brasília, DF, Brazil; Pós-Graduação em Biologia Animal, Campus Darcy Ribeiro, Universidade de Brasilia, DF, Brazil.
| | | | - Osmar N Silva
- S-Inova Biotech, Pós-graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, MS, Brazil.
| | - Andris F Bakuzis
- Instituto de Física, Universidade Federal de Goiás, 74690-900 Goiânia, GO, Brazil.
| | - Maria D L Oliveira
- Programa de Pós-Graduação em Inovação Terapêutica, Universidade Federal de Pernambuco, 50670-901 Recife, PE, Brazil; Departamento de Bioquímica, Universidade Federal de Pernambuco, 50670-901 Recife, PE, Brazil.
| | - Cesar A S Andrade
- Programa de Pós-Graduação em Inovação Terapêutica, Universidade Federal de Pernambuco, 50670-901 Recife, PE, Brazil; Departamento de Bioquímica, Universidade Federal de Pernambuco, 50670-901 Recife, PE, Brazil.
| |
Collapse
|