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Della Ventura G, Rabiee A, Marcelli A, Macis S, D’Arco A, Iezzi G, Radica F, Lucci F. A new approach to deposit homogeneous samples of asbestos fibres for toxicological tests in vitro. Front Chem 2023; 11:1116463. [PMID: 36864901 PMCID: PMC9971495 DOI: 10.3389/fchem.2023.1116463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 02/03/2023] [Indexed: 02/16/2023] Open
Abstract
In this paper we describe the results obtained with a novel method to prepare depositions of asbestos fibres for toxicological tests in vitro. The technique is based on a micro-dispenser, working as an inkjet printer, able to deposit micro-sized droplets from a suspension of fibres in a liquid medium; we used here a highly evaporating liquid (ethanol) to reduce the experimental time, however other solvents could be used. Both the amount and spatial distribution of fibres on the substrate can be controlled by adjusting the parameters of the micro-dispenser such as deposition area, deposition time, uniformity and volume of the deposited liquid. Statistical analysis of images obtained by optical and scanning electron microscopy shows that this technique produces an extremely homogeneous distribution of fibers. Specifically, the number of deposited single fibres is maximized (up to 20 times), a feature that is essential when performing viability tests where agglomerated or untangled fibrous particles need to be avoided.
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Affiliation(s)
- Giancarlo Della Ventura
- Department of Science, Roma Tre University, Rome, Italy,INFN, National Institute of Nuclear Physics, Frascati, Italy,INGV, National Institute of Geophysics and Volcanology, Rome, Italy,*Correspondence: Giancarlo Della Ventura,
| | - Ahmad Rabiee
- Department of Science, Roma Tre University, Rome, Italy
| | - Augusto Marcelli
- INFN, National Institute of Nuclear Physics, Frascati, Italy,RICMASS, Rome International Center for Materials Science Superstripes, Rome, Italy
| | - Salvatore Macis
- Department of Physics, Sapienza University of Rome, Rome, Italy
| | - Annalisa D’Arco
- Department of Physics, Sapienza University of Rome, Rome, Italy
| | - Gianluca Iezzi
- Department of Engineering and Geology, University of Chieti, Rome, Italy
| | - Francesco Radica
- Department of Engineering and Geology, University of Chieti, Rome, Italy
| | - Federico Lucci
- Department of Earth and Geoenvironmental Sciences, University of Bari, Bari, Italy
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