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de Souza Carolino A, Freitas XMS, Macalia CMA, Soares JC, Soares AC, da Costa Pinto C, Barbosa ARC, de Araújo Bezerra J, Campelo PH, da Silva Paula MM, Lalwani PJ, Inada NM, Țãlu Ș, Malheiro A, Sanches EA. Virus adsorbent systems based on Amazon holocellulose and nanomaterials. Microsc Res Tech 2024. [PMID: 38563156 DOI: 10.1002/jemt.24566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 03/07/2024] [Accepted: 03/25/2024] [Indexed: 04/04/2024]
Abstract
The environment preservation has been an important motivation to find alternative, functional, and biodegradable materials to replace polluting petrochemicals. The production of nonbiodegradable face masks increased the concentration of microplastics in the environment, highlighting the need for sustainable alternatives, such as the use of local by-products to create efficient and eco-friendly filtering materials. Furthermore, the use of smart materials can reduce the risk of contagion and virus transmission, especially in the face of possible mutations. The development of novel materials is necessary to ensure less risk of contagion and virus transmission, as well as to preserve the environment. Taking these factors into account, 16 systems were developed with different combinations of precursor materials (holocellulose, polyaniline [ES-PANI], graphene oxide [GO], silver nanoparticles [AgNPs], and activated carbon [AC]). Adsorption tests of the spike protein showed that the systems containing GO and AC were the most efficient in the adsorption process. Similarly, plate tests conducted using the VSV-IN strain cultured in HepG2 cells showed that the system containing all phases showed the greatest reduction in viral titer method. In agreement, the biocompatibility tests showed that the compounds extracted from the systems showed low cytotoxicity or no significant cytotoxic effect in human fibroblasts. As a result, the adsorption tests of the spike protein, viral titration, and biocompatibility tests showed that systems labeled as I and J were the most efficient. In this context, the present research has significantly contributed to the technological development of antiviral systems, with improved properties and increased adsorption efficiency, reducing the viral titer and contributing efficiently to public health. In this way, these alternative materials could be employed in sensors and devices for filtering and sanitization, thus assisting in mitigating the transmission of viruses and bacteria. RESEARCH HIGHLIGHTS: Sixteen virus adsorbent systems were developed with different combinations of precursor materials (holocellulose, polyaniline (ES-PANI), graphene oxide (GO), silver nanoparticles (AgNPs), and activated carbon (AC)). The system that included all of the nanocomposites holocellulose, PANI, GO, AgNPs, and AC showed the greatest reduction in viral titration. The biocompatibility tests revealed that all systems caused only mild or moderate cytotoxicity toward human fibroblasts.
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Affiliation(s)
- Adriano de Souza Carolino
- Laboratory of Nanostructured Polymers (NANOPOL), Federal University of Amazonas (UFAM), Manaus, AM, Brazil
| | | | | | - Juliana Coatrini Soares
- São Carlos Institute of Physics (IFSC), University of São Paulo (USP), São Carlos, SP, Brazil
| | - Andrey Coatrini Soares
- São Carlos Institute of Physics (IFSC), University of São Paulo (USP), São Carlos, SP, Brazil
| | - Camila da Costa Pinto
- Graduate Program in Physics (PPGFIS), Federal University of Amazonas (UFAM), Manaus, AM, Brazil
| | - Aguyda Rayany Cavalcante Barbosa
- Laboratory of Infectious Diseases and Immunology, Fundação Oswaldo Cruz - Instituto Leônidas e Maria Deane (FIOCRUZ-ILMD), Manaus, AM, Brazil
- Graduate Program in Basic and Applied Immunology (PPGIBA), Federal University of Amazonas (UFAM), Manaus, AM, Brazil
| | - Jaqueline de Araújo Bezerra
- Analytical Center, Federal Institute of Education, Science and Technology of Amazonas (IFAM), Manaus, AM, Brazil
| | | | | | - Pritesh Jaychand Lalwani
- Laboratory of Infectious Diseases and Immunology, Fundação Oswaldo Cruz - Instituto Leônidas e Maria Deane (FIOCRUZ-ILMD), Manaus, AM, Brazil
- Graduate Program in Basic and Applied Immunology (PPGIBA), Federal University of Amazonas (UFAM), Manaus, AM, Brazil
| | - Natalia Mayumi Inada
- São Carlos Institute of Physics (IFSC), University of São Paulo (USP), São Carlos, SP, Brazil
| | - Ștefan Țãlu
- The Directorate of Research, Development and Innovation Management (DMCDI), Technical University of Cluj-Napoca, Cluj-Napoca, Romania
| | - Adriana Malheiro
- Graduate Program in Basic and Applied Immunology (PPGIBA), Federal University of Amazonas (UFAM), Manaus, AM, Brazil
- Laboratory of Genomics (LABGEN), Hospital Foundation of Hematology and Hemotherapy of Amazonas (HEMOAM), Manaus, AM, Brazil
| | - Edgar Aparecido Sanches
- Laboratory of Nanostructured Polymers (NANOPOL), Federal University of Amazonas (UFAM), Manaus, AM, Brazil
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Kuźma D, Kowalczyk P, Cpałka K, Laskowski Ł. A Low-Dimensional Layout of Magnetic Units as Nano-Systems of Combinatorial Logic: Numerical Simulations. MATERIALS (BASEL, SWITZERLAND) 2021; 14:2974. [PMID: 34072786 PMCID: PMC8199062 DOI: 10.3390/ma14112974] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 05/18/2021] [Accepted: 05/26/2021] [Indexed: 11/21/2022]
Abstract
Nanotechnology has opened numerous ways for physically realizing very sophisticated nanodevices that can be fabricated exclusively using molecular engineering methods. However, the synthesis procedures that lead to the production of nanodevices are usually complicated and time consuming. For this reason, the destination materials should be well designed. Therefore, numerical simulations can be invaluable. In this work, we present numerical simulations of the magnetic behaviour of magnetic units shaped into nanometric strips as a low dimensional layout that can be used as nano-systems of combinatorial logic. We showed that magnetic layouts that contain fewer than 16 magnetic units can take on a specific configuration as a response to the input magnetic field. Such configuration can be treated as an output binary word. The layouts that contained various numbers of magnetic units showed different switching characteristics (utterly different order of inverting of strips' magnetic moments), thus creating numerous combinations of the output binary words in response to the analog magnetic signal. The number of possible output binary words can be increased even more by adding parameters--the system's initial magnetic configuration. The physical realization of the model presented here can be used as a very simple and yet effective encryption device that is based on nanometric arrays of magnetic units rather than an integrated circuit. The same information, provided by the proposed system, can be utilized for the construction of a nano-sensor for measuring of magnetic field with the possibility of checking also the history of magnetization.
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Affiliation(s)
- Dominika Kuźma
- Institute of Nuclear Physics Polish Academy of Sciences, PL-31342 Krakow, Poland;
| | - Paweł Kowalczyk
- Department of Animal Nutrition, The Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences, PL-05110 Jabłonna, Poland;
| | - Krzysztof Cpałka
- Institute of Computational Intelligence, Czestochowa University of Technology, 42-200 Czestochowa, Poland;
| | - Łukasz Laskowski
- Institute of Nuclear Physics Polish Academy of Sciences, PL-31342 Krakow, Poland;
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Abstract
Although not as ubiquitous as antibacterial susceptibility testing, antifungal susceptibility testing (AFST) is a tool of increasing importance in clinical microbiology laboratories. The goal of AFST is to reliably produce MIC values that may be used to guide patient therapy, inform epidemiological studies, and track rates of antifungal drug resistance. There are three methods that have been standardized by standards development organizations: broth dilution, disk diffusion, and azole agar screening for Aspergillus Other commonly used methods include gradient diffusion and the use of rapid automated instruments. Novel methodologies for susceptibility testing are in development. It is important for laboratories to consider not only the method of testing but also the interpretation (or lack thereof) of in vitro data.
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