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S S Schneider D, de Magalhães AMM, de Oliveira JLC, Costanzi AP, Nora CRD, Trevilato DD. Integrity and filtration efficiency of decontaminated N95/PFF2 masks to protect health care professionals against COVID-19: A systematic literature review and meta-analysis. Am J Infect Control 2024; 52:751-758. [PMID: 38342344 DOI: 10.1016/j.ajic.2024.01.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 01/27/2024] [Accepted: 01/31/2024] [Indexed: 02/13/2024]
Abstract
BACKGROUND To evaluate the evidence related to maintaining the integrity and filtration efficiency of N95 and/or PFF2 respirators after decontamination in health care professionals' protection against COVID-19. METHODS Systematic review, developed based on the guidelines from Joanna Briggs Institute for syntheses focusing on effectiveness evidence. The protocol was registered on the International Prospective Register of Ongoing Systematic Reviews platform, under the number CRD42022354256. This study report was developed in accordance with the guidelines recommended by the Preferred Reporting Items for Systematic Reviews and Meta-Analysis Publications between January 2020 and August 2022 were selected of Embase, Medline, CINAHL, Web of Science, Cochrane, SciELO and Virtual Health Library databases. Joanna Briggs critical appraisal tool for nonrandomized experimental tests was used to evaluate the evidence quality. RESULTS Seven articles were included in the data extraction and critical evaluation, and 3 in the meta-analysis. Four studies evaluated the integrity by visual inspection and 2 by electron microscopy. There was no association between the number of cycles increase and the reduction in filtration in up to 10 cycles. None study was considered of high methodological quality. CONCLUSIONS There is some evidence that integrity and filtration capacity were maintained after decontamination of N95/PFF2 respirators to prevent COVID-19.
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Affiliation(s)
- Daniela S S Schneider
- PhD in Nursing at the Federal University of Rio Grande do Sul (UFRGS), Master in Genetics and Toxicology, Specialist in Operations Management for Health, Nursing Manager of the Central sterile services department (CSSD) of the Hospital de Clínicas de Porto Alegre (HCPA), Member of the Center for Nursing Management Studies (NEGE), Porto Alegre, Rio Grande do Sul, Brazil; PhD student in Nursing at the Federal University of Rio Grande do Sul (UFRGS), Master in Health Teaching, Nurse Assistant of the Surgical Center department of the Hospital Moinhos de Vento (RS), Assistant Professor of the Undergraduate Nursing Course of the Moinhos de Vento Health Sciences College, Porto Alegre, Rio Grande do Sul, Brazil.
| | - Ana M M de Magalhães
- Director of the School of Nursing of the Federal University of Rio Grande do Sul (UFRGS), Associate Professor of the Department of Assistance and Professional Orientation, DAOP, Permanent Professor of the Postgraduate Program in Nursing (PPGENF-UFRGS), Coordinator of the Center for Nursing Management Studies (NEGE), Porto Alegre, Rio Grande do Sul, Brazil.
| | - Joao L C de Oliveira
- Adjunct Professor, Department of Assistance and Professional Guidance, DAOP of the School of Nursing, Federal University of Rio Grande do Sul (UFRGS), Assistant Professor of the Service of Clinical Nursing of the Nursing Department of the Hospital de Clínicas de Porto Alegre (HCPA), Porto Alegre, Rio Grande do Sul, Brazil.
| | | | - Carlise R D Nora
- Adjunct Professor, Department of Assistance and Professional Guidance, DAOP, School of Nursing, Federal University of Rio Grande do Sul (UFRGS), Advisory Professor at the Nursing Service in Surgical Center (SECC) of the Hospital de Clínicas de Porto Alegre (HCPA), Porto Alegre, Rio Grande do Sul, Brazil.
| | - Denilse D Trevilato
- PhD student in Nursing at the Federal University of Rio Grande do Sul (UFRGS), Master in Health Teaching, Nurse Assistant of the Surgical Center department of the Hospital Moinhos de Vento (RS), Assistant Professor of the Undergraduate Nursing Course of the Moinhos de Vento Health Sciences College, Porto Alegre, Rio Grande do Sul, Brazil.
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Rodrigues F, Pereira HF, Pinto J, Padrão J, Zille A, Silva FS, Carvalho Ó, Madeira S. Zirconia Dental Implants Surface Electric Stimulation Impact on Staphylococcus aureus. Int J Mol Sci 2024; 25:5719. [PMID: 38891904 PMCID: PMC11171956 DOI: 10.3390/ijms25115719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 05/16/2024] [Accepted: 05/19/2024] [Indexed: 06/21/2024] Open
Abstract
Tooth loss during the lifetime of an individual is common. A strategy to treat partial or complete edentulous patients is the placement of dental implants. However, dental implants are subject to bacterial colonization and biofilm formation, which cause an infection named peri-implantitis. The existing long-term treatments for peri-implantitis are generally inefficient. Thus, an electrical circuit was produced with zirconia (Zr) samples using a hot-pressing technique to impregnate silver (Ag) through channels and holes to create a path by LASER texturing. The obtained specimens were characterized according to vitro cytotoxicity, to ensure ZrAg non-toxicity. Furthermore, samples were inoculated with Staphylococcus aureus using 6.5 mA of alternating current (AC). The current was delivered using a potentiostat and the influence on the bacterial concentration was assessed. Using AC, the specimens displayed no bacterial adhesion (Log 7 reduction). The in vitro results presented in this study suggest that this kind of treatment can be an alternative and promising strategy to treat and overcome bacterial adhesion around dental implants that can evolve to biofilm.
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Affiliation(s)
- Flávio Rodrigues
- Center for MicroElectroMechanical Systems (CMEMS), University of Minho, 4800-058 Guimarães, Portugal; (F.R.); (H.F.P.); (J.P.); (F.S.S.); (Ó.C.); (S.M.)
- Associate Laboratory in Biotechnology and Bioengineering and Microelectromechanical Systems (LABBELS), 4800-058 Guimarães, Portugal
| | - Helena F. Pereira
- Center for MicroElectroMechanical Systems (CMEMS), University of Minho, 4800-058 Guimarães, Portugal; (F.R.); (H.F.P.); (J.P.); (F.S.S.); (Ó.C.); (S.M.)
- Associate Laboratory in Biotechnology and Bioengineering and Microelectromechanical Systems (LABBELS), 4800-058 Guimarães, Portugal
- MIT Portugal Program, School of Engineering, University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal
| | - João Pinto
- Center for MicroElectroMechanical Systems (CMEMS), University of Minho, 4800-058 Guimarães, Portugal; (F.R.); (H.F.P.); (J.P.); (F.S.S.); (Ó.C.); (S.M.)
- Associate Laboratory in Biotechnology and Bioengineering and Microelectromechanical Systems (LABBELS), 4800-058 Guimarães, Portugal
| | - Jorge Padrão
- Center for Textile Science and Technology (2C2T), University of Minho, 4800-058 Guimarães, Portugal;
| | - Andrea Zille
- Center for Textile Science and Technology (2C2T), University of Minho, 4800-058 Guimarães, Portugal;
| | - Filipe S. Silva
- Center for MicroElectroMechanical Systems (CMEMS), University of Minho, 4800-058 Guimarães, Portugal; (F.R.); (H.F.P.); (J.P.); (F.S.S.); (Ó.C.); (S.M.)
- Associate Laboratory in Biotechnology and Bioengineering and Microelectromechanical Systems (LABBELS), 4800-058 Guimarães, Portugal
| | - Óscar Carvalho
- Center for MicroElectroMechanical Systems (CMEMS), University of Minho, 4800-058 Guimarães, Portugal; (F.R.); (H.F.P.); (J.P.); (F.S.S.); (Ó.C.); (S.M.)
- Associate Laboratory in Biotechnology and Bioengineering and Microelectromechanical Systems (LABBELS), 4800-058 Guimarães, Portugal
| | - Sara Madeira
- Center for MicroElectroMechanical Systems (CMEMS), University of Minho, 4800-058 Guimarães, Portugal; (F.R.); (H.F.P.); (J.P.); (F.S.S.); (Ó.C.); (S.M.)
- Associate Laboratory in Biotechnology and Bioengineering and Microelectromechanical Systems (LABBELS), 4800-058 Guimarães, Portugal
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Vieira B, Padrão J, Alves C, Silva CJ, Vilaça H, Zille A. Enhancing Functionalization of Health Care Textiles with Gold Nanoparticle-Loaded Hydroxyapatite Composites. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13111752. [PMID: 37299655 DOI: 10.3390/nano13111752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 05/11/2023] [Accepted: 05/24/2023] [Indexed: 06/12/2023]
Abstract
Hospitals and nursing home wards are areas prone to the propagation of infections and are of particular concern regarding the spreading of dangerous viruses and multidrug-resistant bacteria (MDRB). MDRB infections comprise approximately 20% of cases in hospitals and nursing homes. Healthcare textiles, such as blankets, are ubiquitous in hospitals and nursing home wards and may be easily shared between patients/users without an adequate pre-cleaning process. Therefore, functionalizing these textiles with antimicrobial properties may considerably reduce the microbial load and prevent the propagation of infections, including MDRB. Blankets are mainly comprised of knitted cotton (CO), polyester (PES), and cotton-polyester (CO-PES). These fabrics were functionalized with novel gold-hydroxyapatite nanoparticles (AuNPs-HAp) that possess antimicrobial properties, due to the presence of the AuNPs' amine and carboxyl groups, and low propensity to display toxicity. For optimal functionalization of the knitted fabrics, two pre-treatments, four different surfactants, and two incorporation processes were evaluated. Furthermore, exhaustion parameters (time and temperature) were subjected to a design of experiments (DoE) optimization. The concentration of AuNPs-HAp in the fabrics and their washing fastness were critical factors assessed through color difference (ΔE). The best performing knitted fabric was half bleached CO, functionalized using a surfactant combination of Imerol® Jet-B (surfactant A) and Luprintol® Emulsifier PE New (surfactant D) through exhaustion at 70 °C for 10 min. This knitted CO displayed antibacterial properties even after 20 washing cycles, showing its potential to be used in comfort textiles within healthcare environments.
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Affiliation(s)
- Bárbara Vieira
- CITEVE, Technological Centre for the Textile & Clothing Industry, 4760-034 Vila Nova de Famalicão, Portugal
- Centre for Textile Science and Technology, University of Minho, 4800-058 Guimarães, Portugal
| | - Jorge Padrão
- Centre for Textile Science and Technology, University of Minho, 4800-058 Guimarães, Portugal
| | - Cátia Alves
- Centre for Textile Science and Technology, University of Minho, 4800-058 Guimarães, Portugal
| | - Carla Joana Silva
- CITEVE, Technological Centre for the Textile & Clothing Industry, 4760-034 Vila Nova de Famalicão, Portugal
| | - Helena Vilaça
- CITEVE, Technological Centre for the Textile & Clothing Industry, 4760-034 Vila Nova de Famalicão, Portugal
| | - Andrea Zille
- Centre for Textile Science and Technology, University of Minho, 4800-058 Guimarães, Portugal
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Sousa VI, Parente JF, Marques JF, Calçada C, Veiga MI, Osório NS, Tavares CJ. PMMA Microcapsules for the Inactivation of SARS-CoV-2. ACS OMEGA 2022; 7:22383-22393. [PMID: 35785261 PMCID: PMC9235045 DOI: 10.1021/acsomega.2c01446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 06/07/2022] [Indexed: 06/15/2023]
Abstract
Surface disinfection currently plays a decisive role in the epidemiological situation caused by the SARS-CoV-2 coronavirus. However, most disinfection products available on the market have a high evaporation rate and only an immediate action and not continuous, creating the need for a high frequency of disinfection. To overcome this limitation, in the present work, poly(methyl methacrylate) (PMMA) microcapsules were developed with an active agent (hydrogen peroxide) encapsulated, which has the ability to inactivate/neutralize the SARS-CoV-2 virus. PMMA-H2O2 microcapsules have a spherical shape and a smooth structure with low porosity and were successfully attached to nonwoven fabrics, as observed from scanning electron microscopy. The thermogravimetric analysis shows that PMMA-H2O2 microcapsules have high thermal stability and can increase the stability of H2O2. Nonfabric substrates functionalized with PMMA-H2O2 microcapsules were tested by a highly sensitive and specific reverse transcription-quantitative real-time polymerase chain reaction (RT-qPCR)-based method to evaluate antiviral activity through the degradation of SARS-CoV-2 deoxyribonucleic acids. The highest percentage of viral nucleic acid elimination was obtained when exposing the viral sample for 1 h to PMMA-H2O2 microcapsules, resulting in an elimination of >97% of the coronavirus. In addition, the microcapsules are stable over a period of three weeks and retain the ability to eliminate SARS-CoV-2. Hence, it is demonstrated that this microcapsule system is efficient for SARS-CoV-2 elimination and inherent surface disinfection.
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Affiliation(s)
- Vânia I. Sousa
- Centre
of Physics of the Universities of Minho and Porto (CF-UM-PT), University of Minho, Campus of Azurém, 4835-386 Guimarães, Portugal
| | - Joana F. Parente
- Centre
of Physics of the Universities of Minho and Porto (CF-UM-PT), University of Minho, Campus of Azurém, 4835-386 Guimarães, Portugal
| | - Juliana F. Marques
- Centre
of Physics of the Universities of Minho and Porto (CF-UM-PT), University of Minho, Campus of Azurém, 4835-386 Guimarães, Portugal
- Interhigiene
- Indústria De Produtos De Higiene Lda., Rua General Humberto Delgado, no 588 Serzedelo, 4765-546 Guimarães, Portugal
| | - Carla Calçada
- Life
and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal
- ICVS/3B’s—PT
Government Associate Laboratory, 4806-909 Guimarães, Portugal
| | - Maria I. Veiga
- Life
and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal
- ICVS/3B’s—PT
Government Associate Laboratory, 4806-909 Guimarães, Portugal
| | - Nuno S. Osório
- Life
and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal
- ICVS/3B’s—PT
Government Associate Laboratory, 4806-909 Guimarães, Portugal
| | - Carlos J. Tavares
- Centre
of Physics of the Universities of Minho and Porto (CF-UM-PT), University of Minho, Campus of Azurém, 4835-386 Guimarães, Portugal
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